Tạp chí Khoa học và Công Nghệ
type: channel
description: Tạp chí của Viện Hàn lâm Khoa học và Công nghệ Việt Nam
language: en
publication name: Tạp chí Khoa học và Công Nghệ
issn: 0866 708X
items: Application of data assimilation for parameter correction in super cavity modelling
items: Effect of hot drying on the essential oil content and colour characteristics of peppermint
items: Synthesis of hydroxyl terminated liquid natural rubber by oxidative deproteinized natural rubber
items: Isolation and screening of antimicrobial compounds of micromonospora strains isolated from Halong-Cat Ba bay's sediments
items: On the critial velocity of a vehicle moving on the bridge
items: Application of fuzzy logic for controlling mechanism of ralative manipulation robot (MRM robot)
items: Oxidized maize starch: characterization and its effect on the biodegradable films
items: Effect of laser power on the molten pool temprature and layer thickness at the curvature radius of thin-wall part fabricated by laser direct metal forming
items: Effect of some dispersing auxiliaries on nanosilica dispersion into passive chrom trivalent solution
items: Effect of molecular structure of pophyrins on their semiconducting properties
items: An estimation of bamboo borer biomass in Son La province, Northwestern Vietnam and remarks on its parasitic characteristic
items: Bending and free vibration analysis of functionally graded plates using new eight unknown shear deformation theory by finite element method
items: Combining fuzzy probability and fuzzy clustering for multispectral satellite imagery classificationr
items: LPSO an efficient algorithm scheduling of scientific workflows in cloud computing
items: About the robustness of adaptive feedback linearization controller for input perturbed uncertain fully-actuated systems
items: Comparison behavior of a large turbon machine vibration between unbalance and bent shaft
items: Effect of cyanobacteria (Nostoc calcicola) on antioxidant of soybean
items: Study on UV-crosslinking process of Diane-Epoxy resin/poly (tetrahydrofurane) divinyl ether system
items: Flavonoids and Triterpenoids from Callistemon citrinus and their inhibitory effect on No production in LPS-Slimulated RAW267.7 Macrophages
items: Characterization of glucomanan from amorphophallus panomensis in Vietnam
items: Study, design and fabrication of polarization-independent metamaterials
items: Green organic synthesis of N-methylpyrrolidine
items: Genetic diversity in the natural populations of Pinus dalatensis Ferré-Pinaceae assessed by SSR makers
items: Effect of hot drying on the chemical content ang colour sensory quality of Ginger powder (Zingiber officinale)
items: Glucosides and Urea derivatives from the seeds of Scaphium Macropodum (MIQ). Beume'e
items: Calculation of pavement permanent defomation using perzina's elasto-viscoplastic model
items: The application of hedge algebras in fuzzy time series forecasting
items: A hair and hair vortex simulation technique based on vector fields on a manifold
items: Study of effcet of friction stir welding parameters on impact energy of AA7075-T6
items: On step systhesis of water-dispersible CoFe2O3 magnetic nanoparticles using triethylenetetramin as solvent and stabilising ligand

Application of data assimilation for parameter correction in super cavity modelling
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]-->On the imperfect water entry, a high speed slender body moving in the forward direction rotates inside the cavity. The super cavity model describes the very fast motion of body in water. In the super cavity model the drag coefficient plays important role in body’s motion. In some references this drag coefficient is simply chosen by different values in the interval 0.8-1.0. In some other references this drag coefficient is wntten by the formula /t =Cpo{l + cr)cos^ Of with Ơ is the cavity number, oc IS the angle of body axis and flow direction, CoQ is a parameter chosen from the interval 0.6-0 85. In this paper the drag coefficient k = (1 + ơ)cos’ Of is written with fixed Coo = 0.82 3nd the parameter ft, is corrected so that the simulation bod…
creator: Trần Thu Hà
creator: Nguyễn Anh Sơn
creator: Dương Ngọc Hải
creator: Nguyễn Hồng Phong
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 426
ending page: 443

Effect of hot drying on the essential oil content and colour characteristics of peppermint
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]-->The main objectives of this study were to investigate the effect of different temperature of hot air drying on the qualities of dried peppermint, including essential oil content, colour parameters, and visual sensory quality and to develop mathematical models for the colour change kinetics. The drying experiments were carried out at five air temperatures, 40, 50, 60 70 and 80 ‘’c. The colour parameters for colour change of the materials were quantified by the Hunteri (whiteness/darkness), a (redness/greenness) and b (yellowness/blueness) system. These values were also used for calculation of total change (AE) as well as chroma, hue angle and Browning index, A consumer preference test was conducted with 80 consumers to as^ss the colour qualit…
creator: Nguyễn Thị Yến Chi
creator: Dương Thị Thanh Thảo
creator: Hoàng Quốc Tuấn
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 314
ending page: 322

Synthesis of hydroxyl terminated liquid natural rubber by oxidative deproteinized natural rubber
type: item
description: <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:RelyOnVML /> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--> Hydroxyl terminated liquid natural rubber (HTLNR) was prepared by the depolymerizatioQ of deproteinized natural rubber (DPNR) in mixture of toluene and water at 60 °c for 24 hours in the presence of ammonium persulfate as an initiator and tehahydrofuran (THF) as a homogenizing agent. GPC analysis revealed that the number-average molecular weight (M„) and weight-average molecular wei^t (M„.) of HTLNR were found to be 4.334x10° g/moi and 11.702x10^ g/mol. respectively, with polydispersity index (PDI) of 2.7. The chemical structure of HTLNR was determined by FTIR and 'H-NMR and '^C-NMR spectroscopic analysis. Based on the analytical data the mechanism of depolymerization and hydroxylation of NR to form HTNR was also suggested. <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOv…
creator: Lê Đức Giang
creator: Đinh Mộng Thảo
creator: Hoàng Thị Hướng
creator: Lê Thị Thu Hiệp
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 340
ending page: 346

Isolation and screening of antimicrobial compounds of micromonospora strains isolated from Halong-Cat Ba bay's sediments
type: item
description: No avaialbe abstract
creator: Lê Thị Hồng Minh
creator: Vũ Thị Quyên
creator: Nguyễn Mai Anh
creator: Phạm Việt Cường
creator: Phạm Văn Cường
creator: Đoàn Thị Mai Hương
creator: Brian T. Murphy
creator: Châu Văn Minh
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 323
ending page: 331

On the critial velocity of a vehicle moving on the bridge
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]-->Vibration model of a vehicle on the bridge IS modeled by a mass - spring - damper system moving on an elastic beam J his paper presents the results of a new study on determ.nine tile critical velocity of a vehicle moving on the beam bridge. The cniicai velocity'of the vehicle calculated according to the new model is much smaller than that calculated according to the old <!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true" DefSemiHidden="true" DefQFormat="false" DefPriority="99" LatentStyleCount="267"> <w:LsdException Locked="false" Priority="0" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Normal" /> <w:LsdException Locked="false" Priority="9" SemiHidden="false" UnhideWhenUsed="false" QFor…
creator: Nguyễn Văn Khang
creator: Nguyễn Thị Vân Hương
creator: Nguyễn Đức Phong
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 415
ending page: 425

Application of fuzzy logic for controlling mechanism of ralative manipulation robot (MRM robot)
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> In robot control, mathematical equations describing dynamic behaviors of robots are usually complicated. Additionally, the components such as inertial and friction parameten appearing in these equations are very difficult to determine exactly. With robots having complex structure .such as parallel robots. MRM robots etc., the derivation of dynamic equations becomes more difficult and sometimes cannot obtain analytically. In those cases, controlling robot based on its equations of motion IS quite hard. Applying fuzzy logic for robot control can overcome the mentioned drawbacks. This IS because fuzzy control algorithm gives favorable condition to deal with the lack of adequation as well as inaccuracy of components in robot’s dynamic equations…
creator: Phan Bùi Khôi
creator: Nguyễn Văn Toàn
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 386
ending page: 401

Oxidized maize starch: characterization and its effect on the biodegradable films
type: item
description: No avaiable abstract
creator: Đào Phi Hùng
creator: Trương Thị Nam
creator: Mạc Văn Phúc
creator: Nguyễn Anh Hiệp
creator: Trinh Văn Thành
creator: Nguyễn Thiên Vương
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 347
ending page: 355

Effect of laser power on the molten pool temprature and layer thickness at the curvature radius of thin-wall part fabricated by laser direct metal forming
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> To discuss the effect of laser power on the molten pool temperature and layer thickness at the curvature radius of thin-wali parts, the numerical simulation and expemncntal was studied The numerical results showed that the molten pool temperature of the thin-wall increases with the layer number, and the molten pool temperature of thin-wall cylinders were increa.sed when curv'aturc radius decreased The rules of laser power changing with the layer number and ciinuture in ilie processing of the thin-wall blade can be obtained when keeping molten pool temperature stable. According to the numerical results, the thin-wall blades were fabneated by experiments. The experimental results showed that the excessive build-up occ^uired and unevenness thi…
creator: Đoàn Tất Khoa
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 366
ending page: 376

Effect of some dispersing auxiliaries on nanosilica dispersion into passive chrom trivalent solution
type: item
description: No avaiable abstract
creator: Trương Thị Nam
creator: Hoàng Thị Hương Thủy
creator: Đào Phi Hùng
creator: Lê Bá Thắng
creator: Đặng Thị Cẩm Hà
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 377
ending page: 385

Effect of molecular structure of pophyrins on their semiconducting properties
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> In this word, we report on tlie fabrication of organic field-effect transistors (OFRTs) using solution processable semiconducting porphyrins 4TBPZ and 2TBPZ. The eflect of semiconductor crystal structure on the performance of OFE I s was investigated These single­crystal devices were revealed to exhibit good performance with a maximum carrier mobility for hole of 0.40 cm- V' s ' and high current on/off ratios. The present work, representing our continuous efforts in understanding the relationship between molecular structure costal packing, and OFET perfomiance of semiconducting porphyrins, will be expected to conmbutc to the design of new porphyrin derivatives for electronic/optoelectronic applications <!--[if gte mso 9]><xml> <w:LatentStyl…
creator: Hoàng Mai Hà
creator: Phan Đình Long
creator: Ngô Trịnh Tùng
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 356
ending page: 365

An estimation of bamboo borer biomass in Son La province, Northwestern Vietnam and remarks on its parasitic characteristic
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]-->The population of Vietnam has been rapidly increased and would reach 100 million people in the near future It is very likely that the soiưces of traditional food are insufficient to the whole popul^ion. Therefore, a study for sustainable usage of insects as a supplemental food for human in the ftifure is dearly required. In fact. larvae of bamboo borer, Omphisa fuscidentalis has been used as a kind of foods by local people m mountainous provinces in northern Vietnam It also appears as a trade product in local markets. This paper presents the results of recent studies on the infested rales of bamboo borer larvae from different bamboo species. An assessment of Its parasitic characteristics and an estimation of biomass in Son La province are al…
creator: Phạm Quỳnh Mai
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 332
ending page: 339

Bending and free vibration analysis of functionally graded plates using new eight unknown shear deformation theory by finite element method
type: item
description: No avaiable abstract
creator: Nguyễn Văn Long
creator: Trần Hữu Quốc
creator: Trần Minh Tú
rights: Copyright (c)
date: 2017-10-12
publication date: 2017-10-12
starting page: 402
ending page: 414

Combining fuzzy probability and fuzzy clustering for multispectral satellite imagery classificationr
type: item
description: No available abtract
creator: Mai Đình Sinh
creator: Trịnh Lê Hùng
creator: Ngô Thành Long
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 300
ending page: 313

LPSO an efficient algorithm scheduling of scientific workflows in cloud computing
type: item
description: No available abtract
creator: Phan Thanh Toàn
creator: Nguyễn Thế Lộc
creator: Nguyễn Doãn Cường
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 287
ending page: 299

About the robustness of adaptive feedback linearization controller for input perturbed uncertain fully-actuated systems
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]-->The paper proposes a theorem to assert the arbitrarily good robustness of the fully actuated mechanical system controlled by the adaptive feedback linearization controller. The fully actuated system to be controlled is considerately perturbed by input disturbances and contains constant uncertam parameters in its Euler-Lagrange forced model. It is shown in this paper that independent of input disturbances of the adaptive feedback linearization conưoller with appropriately chosen parameters will drive the output of controlled systems to the desừed trajectory for any arbitrary precision. The adaptive controller is applied to the two-link planar elbow arm robot with unknown mass of the end-effector of second link and input torque noises caused b…
creator: Nguyễn Văn Chí
creator: Nguyễn Hiền Trung
creator: Nguyễn Doãn Phước
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 276
ending page: 285

Comparison behavior of a large turbon machine vibration between unbalance and bent shaft
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]-->Recently, large capacity steam turbines have come into wider use and have been designed to perform at even higher performance specifications. As we all know, it’s hard to maintain the concentricity of rotor-bearing system during operating, especially for multi-rotors within specified levels of vibration. Rotor vibration could be caused by many reasons. Mass unbalance and bent shaft are amongst the most frequently occurring of these reasons. Mass unbalance and bent shafts both give force excitation at a frequency coưesponding to once per revolution. Taking a LP B rotor of a 1000 MW use steam turbine as an example, this paper studies the lateral vibration of the LP B rotor based on finite element. Responses of mass unbalance and bent shaft are…
creator: Ngô Văn Thanh
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 266
ending page: 275

Effect of cyanobacteria (Nostoc calcicola) on antioxidant of soybean
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> Strain Nostoc calcicola HN9 of Cyanobacteria, which was in the static culture, was collected biomass in death and log phases to exam Its effect on the antioxidant system of soybean [Glycine max (L.) Mem. “Nam Dan”] in the vegetative stages. Suspension of A. calcicola HN9 in death phase caused to oxidative stress in soybean leaves with a burst of superoxide anion radical (O2* ) in stage VI and hydrogen peroxide (H2O2) in stage V3. In N. calcicola HN9-ữeated plants, whereas generation of ascorbic acid was inhibited, total phenolics was early accumulated to high content; parallel, activity of enzymes such as superoxide dismutases (SOD), catalase (CAT), ascorbate peroxidases (APX) and polyphenol oxidase (PPO) were enhanced during the vegetative…
creator: Mai Văn Chung
creator: Mai Thanh Huyền
creator: Đinh Thị Trường Giang
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 238
ending page: 248

Study on UV-crosslinking process of Diane-Epoxy resin/poly (tetrahydrofurane) divinyl ether system
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> The effect of diane-epoxy resm (DE) and poly(tettahydrofurane) divinyl ether (DVE) content on photocrosslinking reaction of DE/DVE system with triarylsulfonium salt (TAS) as photo-initiator were investigated by IR spectra, change of relative hardness and gel fraction. The results showed that increasmg DVE content improved some of physico-mechanical properties of photocrosslinked coatings although relative hardness and speed of photocrosslinking reaction reduced. The changes of fimctional groups (IR spectra), relative hardness and gel fraction as well as the physico-mechanical properties of uv-cured coatings based on DE/DVE/TAS system illustrated that suitable mass ratio of constituents was 80/20/5. The UV-cured coating based on the system D…
creator: Đào Phi Hùng
creator: Nguyễn Anh Hiệp
creator: Mạc Văn Phúc
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 249
ending page: 257

Flavonoids and Triterpenoids from Callistemon citrinus and their inhibitory effect on No production in LPS-Slimulated RAW267.7 Macrophages
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]-->Phytochemical investigation of the leaves and stems of Callistemon citrinus (Curtis) Skeels led to the isolation of 12 flavonoid and triterpenoid compounds, including one new flavonoid, callistine A (1) and six known flavonoids, 6,7- dimethyl-5,7-dihydroxy-4'-methoxy flavone (2), astragalin (3), quercetin (4), catechin (5), eucalyptin (6), and 8-demethyleucaIyptin (7), along with 5 known triterpenoids, 3-^-acetylmorolic acid (8), 3yỡ-hydroxy-urS'ỉl-en-13(28)-olide (9), betulinic acid (10), diospyrolide (11) and iưsolic acid (12). Theừ chemical structures were determined by analysis of theừ ID- and 2D-NMR and HR-MS data. All isolated compounds were examined for then inhibitory activity against LPS-activated NO production in macrophage RAW264.…
creator: Nguyễn Mạnh Cường
creator: Phạm Ngọc Khanh
creator: Hồ Việt Đức
creator: Trần Thu Hường
creator: You Chul Kim
creator: Phạm Quốc Long
creator: Young Ho Kim
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 214
ending page: 223

Characterization of glucomanan from amorphophallus panomensis in Vietnam
type: item
description: <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:RelyOnVML /> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--> A glucomannan has been isolated from the tuber of Amorphophalhis panomensis by a simple method without using toxic chemicals. The glucomannan content of the tuber was 4% (w/w). The structure of the glucomannan was investigated by IR and NMR spectroscopy revealing that it consists of mannose and glucose units with a mannose/glucose ratio of about 1.00/0.13. The degree of crystallization was investigated by XRD diffraction revealing that tìie glucomannan was amorphous. The molecular weight was determined by viscosunetry to be of 1.2x106 Da. <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true" DefSemiHidden="true" DefQFormat="false" DefPrio…
creator: Nguyễn Tiến An
creator: Đỗ Trường Thiện
creator: Nguyễn Thị Hoa
creator: Vũ Thị Huệ
creator: Vũ Thị Minh Thư
creator: Lại Thị Thu Trang
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 224
ending page: 230

Study, design and fabrication of polarization-independent metamaterials
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> Conventionally, to obtain the negative permeability and negative refraction metamaterials, the split-ring resonator (SRR) and cut-wire-pafr (CWP) were applied. However, the properties of these structuresare strongly dependent on the polarization of electromagnetic waves. In this report, we used a high symmetry structure -the so-called dish pair structurewhich based on the CWP structure, with the aim of removing this drawback. Each umt cell consists of two identical dishes, s5Tnmetrically arranged in a dielectric spacer, providing die negative permeability when interacting with the elecừomagnetic wave. By expanding the radius of the dish until two adjacent dish close each other, the negative refractive index can be obtained. This is importan…
creator: Nguyễn Thị Hiền
creator: Vũ Đình Quý
creator: Trịnh Thị Giang
creator: Nguyễn Thanh Tùng
creator: Vũ Đình Lãm
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 258
ending page: 265

Green organic synthesis of N-methylpyrrolidine
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> N-methylpyrrolidine was successfully synthesized in an aqueous medium by using methylamine and 1,4-dibromobutane in the presence of catalyst K2CO3 at a moderated temperature. Here, N-meíhylpyưolidine was firstly synthesized via the green chemistry process, in which both the water solvent and potassium carbonate catalyst were inexpensive and environmentally friendly. Also, the reaction temperature was quite moderated at 90 “’c. As a result, the current synthesis process was highly potential to implement in practice. Since the product yield dừectly depended on the operating conditions, the catalysts, temperature, ratio of reactants and solvent would be critical factors. In the present study, the structure of N- methylpyrrolidine product was c…
creator: Nguyễn Văn Hóa
creator: Nguyễn Anh Tuấn
creator: Phan Thanh Thảo
creator: Trịnh Thị Thanh Huyền
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 231
ending page: 237

Genetic diversity in the natural populations of Pinus dalatensis Ferré-Pinaceae assessed by SSR makers
type: item
description: <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:RelyOnVML /> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--> Pinus dalatensis Ferré (Family: Pinaceae) is an endemic plant with restricted habitats at higher altitudes in highland of Vietnam. The species is now near threatened by over-exploitatioD and habitat destruction. The genetic variation within and among populations of p. dalatensis was investigated by 41 microsatellite (single sequence repeat, SSR) primers, but only 11 SSR primers showed polymorphism bands. In all, 70 sampled trees collected from six populations located in different altitude (Xa Hieu, Dak Glei and Ngoc Linh in Kon Turn, Da Chais in Lam Đong, Hoa Son in Dak Lak and A Yxm in Gia Lai) in highland of Vietnam were analyzed in this study. Among 40 putative genetic alleles were amplified, of which 39 were polymorphic (accounting for 97.5 %). The mean number of alleles per locus was 2.197. The SSR data showed a genetic diversity parameters within populations with an average of/= 0.524, ,fíb = 0.222, He =317, Fis =0.333 and Ap ~ 0.106. The number private aUeles (Ap) was only foimd in four populations, the Hoa Son population showed the highest (0.273), followed by Da Chais (0.182), and value of 0.091 for all Ngoc Linh and A Yun. Analysis of molecular variance analysis showed that most genetic variation was within populations of 57.504 % and among population of 42.496 %. The population pafrwise differentiations indicated that most of the populations were significantly differentiated p < 0.001 with Fst values ranged from 0.195 to 0.418. This study highlights the importance of conserving the genetic resources ofp. dalatensừ species. <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false…
creator: Đinh Thị Phòng
creator: Vũ Thị Thu Hiền
creator: Trần Thị Liễu
creator: Nguyễn Tiến Hiệp
rights: Copyright (c)
date: 2017-10-10
publication date: 2017-10-10
starting page: 178
ending page: 189

Effect of hot drying on the chemical content ang colour sensory quality of Ginger powder (Zingiber officinale)
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> The mam objective of this study was to investigate the effect of different temperature of hot aừ drying on the qualities of ginger powder included chemical content, colour parameters and colour sensory quality. The drying experiments were carried out at four air temperature of 50, 60, 70 and 80 °c. The colour parameters for coloiư change of the materials were quantified by the Hunter L (whiteness/darkness), a (redness/greenness) and b (yellowness/blueness) system. These values were also I^ed for calculation of total change (AE). A consumer preference test was conducted with 80 consumers to assess the coloxư quality of 04 ginger powders. The results showed that the decreasing of essential oils content at low drying temperature is higher than…
creator: Đào Nhật Quang
creator: Vũ Thị Hường
creator: Hoàng Quốc Tuấn
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 198
ending page: 206

Glucosides and Urea derivatives from the seeds of Scaphium Macropodum (MIQ). Beume'e
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]-->Five known compoxmds (carbonylbis[imino(6-methyl-3,l-phenylene)]}bis[carbamic acid] dimethyl ester (1), (1'R,3'S,5'R,8'S,2E,4E)-dihydrophaseic acid 3'-0->B-D-glucopyranoside (2), 3- methylbutan-l-ol j5-D-glucopyranoside (3), asttagalin (4) and daucosterol (5) were isolated from the methanol extract of the seeds of Scaphium macropodum (Miq.) Beumée. The structures of the isolated compounds were elucidated by specừoscopic methods including NMR and MS, and also by comparison with the literature data. Compoimds 1-3 were isolated from this plant for the first time. <!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true" DefSemiHidden="true" DefQFormat="false" DefPriority="99" LatentStyleCount="267"> <w:LsdExceptio…
creator: Vũ Anh Tú
creator: Châu Ngọc Điệp
creator: Nguyễn Hữu Toàn Phần
creator: Nông Văn Duy
creator: Nguyễn Thị Diệu Thuần
creator: Nguyễn Văn Thanh
creator: Nguyễn Xuân Cường
creator: Nguyễn Hoài Nam
creator: Châu Văn Minh
rights: Copyright (c)
date: 2017-10-11
publication date: 2017-10-11
starting page: 207
ending page: 213

Calculation of pavement permanent defomation using perzina's elasto-viscoplastic model
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:RelyOnVML /> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--> In this work, a method for calculation of pavement permanent deformation due to traific loading is presented. The mechanics behavior of asphalt concrete layer is considered as Perzyna’s elasto-viscoplastic material. The pavement permanent deformation is incrementally calculated using nonlinear finite element method. Model parameters are determined using Hamburg Wheel Tracking Test result. <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:I…
creator: Nguyễn Huỳnh Tấn Tài
rights: Copyright (c)
date: 2017-10-10
publication date: 2017-10-10
starting page: 150
ending page: 160

The application of hedge algebras in fuzzy time series forecasting
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> Fuzzy time series given by Song & Chissom (1993) in magazine "Fuzzy Sets and Systems" has been widely studied for forecasting purposes. However, the accuracy of forecasts based on the concept of fuzzy approach of Song & Chissom is not high because such depends on many factors. Chen (1996) proposed an efficient fuzzy time series model which consists of simple arithmetic calculations only. After that, this has been widely studied for improving accuracy of forecasting in many applications to get better results. The hedge algebras developed by Nguyen and Wechler (1990) was completely different from the fuzzy approach. Here the hedge algebras was used to model linguistic domains and variables and theữ semantic structure is obtained. Instead of p…
creator: Nguyễn Cát Hồ
creator: Nguyễn Công Điều
creator: Vũ Như Lân
rights: Copyright (c)
date: 2017-10-10
publication date: 2017-10-10
starting page: 161
ending page: 177

A hair and hair vortex simulation technique based on vector fields on a manifold
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> Hair is an important component in the virtual human simulation system. During hair simulation, not only the time required to ensure that there are required to express the physical characteristics, chemical such as hair styles, colors, curves, twists, parting one’s hair and haừ vortex (swirl), ... to represent the authenticity of the hair and improve hair simulation quality. While the studies has announced today that they mainly focus on simulating the styles, the motion of the haứ that has not been expressed characteristics of hair as hair vortex,... The paper introduces the concept of scalp model as a manifold in 3-dimensional space. Based on the nature of the singularity of the vector field on the manifold, the paper proposes a haừ simula…
creator: Nguyễn Văn Huân
rights: Copyright (c)
date: 2017-10-10
publication date: 2017-10-10
starting page: 109
ending page: 122

Study of effcet of friction stir welding parameters on impact energy of AA7075-T6
type: item
description: <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:RelyOnVML /> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--> <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w…
creator: Dương Đình Hảo
creator: Trần Hưng Trà
creator: Vũ Công Hòa
rights: Copyright (c)
date: 2017-10-10
publication date: 2017-10-10
starting page: 99
ending page: 108

On step systhesis of water-dispersible CoFe2O3 magnetic nanoparticles using triethylenetetramin as solvent and stabilising ligand
type: item
description: <!--[if !mso]> <![endif]--> raiifir Iiáả5:: ;rỉiiỉóiíĩL iDiiocfe Magnetic CoFe2O3 nanoparticles were synthesised by one step synthetic method through thermal decomposition of Co and Fe precursors in triethylenetetramin solvent at high temperature. The advantage of this method is the ability to make monodisperse nanoparticles with high water-dispersibility and stability. The particle size can be tuned in the range of 7-11.3 nm by varying synthetic conditions. The obtained particles with small DLS size (less than 21 nm) are ready to disperse and stable in aqueous solution for weeks without any surface modification. <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:RelyOnVML /> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves>false</w:TrackMoves> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val=" " /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles De…
creator: Kiều T.B. Ngọc
creator: Phạm Văn Luyến
creator: Nguyễn C. Khang
creator: Phạm H. Nam
creator: Đỗ H. Mạnh
creator: Phạm V. Vĩnh
creator: Phạm V. Hùng
creator: Lê T. Lư
rights: Copyright (c)
date: 2017-10-10
publication date: 2017-10-10
starting page: 123
ending page: 132