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1On the vein-stiffening membrane structure of a dragonfly hind wing显示文摘Aiming at exploring the excellent structural performance of the vein-stiffening membrane structure of dragonfly hind wings,we analyzed two planar computational models and three 3D computational models with cambered corrugation based on the finite element method.It is shown that the vein size in different zones is proportional to the magnitude of the vein internal force when the wing structure is subjected to uniform out-of-plane transverse loading.The membrane contributes little to the flexural stiffness of the planar wing models,while exerting an immense impact upon the stiffness of the 3D wing models with cambered corrugation.If a lumped mass of 10% of the wing is fixed on the leading edge close to the wing tip,the wing fundamental fre-quency decreases by 10.7%~13.2%;if a lumped mass is connected to the wing via multiple springs,the wing fundamental fre-quency decreases by 16.0%~18.0%.Such decrease in fundamental frequency explains the special function of the wing pterostigma in alleviating the wing quivering effect.These particular features of dragonfly wings can be mimicked in the design of new-style reticulately stiffening thin-walled roof systems and flapping wings in novel intelligent aerial vehicles.Zhong-xue LI Wei SHEN Gen-shu TONG Jia-meng TIAN Loc VU-QUOC 2009Journal of Zhejiang University-Science A(Applied Physics & Engineering)2009,10,1:3
2Synthesis and characterization of core/shell structured nanophosphors CePO_4:Tb@LaPO_4 by solvothermal method显示文摘Core/shell structured CePO4:Tb(III) @LaPO4 and CePO4:Tb(III) were successfully synthesized in tris(2-ethylhexyl) phosphate(TEHP) and diethylene glycol(DEG) solvents for comparison of the two techniques in open air and closed reaction vessel.Morphology and crystal structure of the core/shell nanophosphors were determined by using X-ray diffraction(XRD) and transmission electron microscopy(TEM) ,which showed that nanophosphors had diameter of about 5-10 nm with the monoclinic monazite phase.The nanophosphors obtained by close vessel procedure showed smaller size,more homogeneity and pure crystallite.The luminescent measurements were done upon the different excitation wavelengths in ultraviolet region and at room temperature to elucidate the influences of the used solvents and the reaction temperatures.It was found that CePO4:Tb@LaPO4 prepared by the close vessel synthesis showed the intensity of green band of the transfer from 5D4 to 7F5 energy level,which was strongly increased,and the luminescent decay time was 3.2 ms,which was longer than that of naked CePO4:Tb phosphor.Dinh Xuan Loc Tran Thi Kim Chi Tran Thu Huong Nguyen Vu Tran Kim Anh Wieslaw Strek Le Quoc Minh 2011Journal of Rare Earths2011,29,12:2
3苦苣苔科凹柱苣苔属在越南的发现及水晶凹柱苣苔的补充描述显示文摘中越边境喀斯特地区有着异乎寻常的植物多样性,已经成为全球生物多样性研究和保护的热点区域,近年来在该区发现了多个苦苣苔科植物的新种或新属。凹柱苣苔属是2010年才被建立的新属,该属的花与叶相比,花较大,叶相对较小,叶片边缘稍外卷,花序仅单花,柱头盘状或凹坑状,蒴果长椭球形而有别于苦苣苔科的其他属。凹柱苣苔属为喀斯特专性植物,目前仅包括分布于黔西南的凹柱苣苔和分布于滇东南的水晶凹柱苣苔两个物种。作者在开展中越边境喀斯特地区植物多样性调查时,在越南北部的河江省发现了水晶凹柱苣苔,基于该新发现居群的植物标本,对其进行了补充描述,确认其花期为11月—12月,并对该物种濒危状况进行了重新评估,同时提供了野外生态照片以资辨认。目前,越南已记录苦苣苔科植物32属150余种,凹柱苣苔属在越南北部的发现,不仅丰富了该国苦苣苔科植物的多样性,再一次充分证明了中越边境喀斯特地区是一个完整的植物区系地理单元,而且为稀有的水晶凹柱苣苔提供了更加丰富的野外本底资料,对其将来的深入研究和保护具有重要的生物地理学和保护生物学意义。陆昭岑 NGUYEN Khang Sinh PHAN Ke Loc TRAN Thi Phuong Anh 许为斌 2020广西植物2020,40,10:2
4DNA barcoding of East Asian Amentotaxus (Taxaceae): Potential new species and implications for conservation显示文摘DNA barcoding 是为用标准化 genomic DNA 碎片的种类鉴定的一个有用工具。类 Amentotaxus,由五或六种组成,被限制到华南,东北印度,老挝,和越南。所有种类是被估计了全球性或全国地威胁了。然而,关于包含的种类的数字有无常,特别在南部的中国,北越南,和老挝的边阶区域。我们选择了五 DNA barcodes (rbcL, matK, trnH-psbA, trnL-F,和内部抄录分隔符(它的)) 在这个类评估他们的辨别能力,并且调查 Amentotaxus 的当前的分类。我们的结果显示所有选择 barcoding 区域为 PCR 显示出普遍性的高水平并且定序。当六种被认出时,原子 ribosomal DNA 区域它叶绿体 DNA 区域 trnL-F 在他们的自己上使用了的 and 提供了最高的鉴定成功(60%) 。也包括了它的 or trnL-F 的二 barcode 联合有一样的种类辨别能力。用另外的 barcodes 的联合没改进种类鉴定成功。五种什么时候仅仅被认出,与 A。hatuyenensis T. H。当作 A 的一个同义词的 Nguyen。yunnanensis H.L. 李,辨别率升起到 100% 。我们的结果也显示从云南省,中国,老挝人的蔡省,越南,和老挝的最近的集合可以代表潜在的新种。从这研究的调查结果将为为在公民和 trans 边界区域的威胁的 Amentotaxus 种类的适当保存策略的明确的表达是很有用的。Lian-Ming Gao Yan Li Loc Ke Phan Li-Jun Yan Philip Thomas Long Ke Phan Michael Mbller De-Zhu Li 2017Journal of Systematics and Evolution2017,55,1:2
5Sudoku of porous, injectable calcium phosphate cements – Path to osteoinductivity显示文摘With the increase of global population,people’s life expectancy is growing as well.Humans tend to live more active lifestyles and,therefore,trauma generated large defects become more common.Instances of tumour resection or pathological conditions and complex orthopaedic issues occur more frequently increasing necessity for bone substitutes.Composition of calcium phosphate cements(CPCs)is comparable to the chemical structure of bone minerals.Their ability to self-set and resorb in vivo secures a variety of potential applications in bone regeneration.Despite the years-long research and several products already reaching the market,finding the right properties for calcium phosphate cement to be osteoinductive and both injectable and suitable for clinical use is still a sudoku.This article is focused on injectable,porous CPCs,reviewing the latest developments on the path toward finding osteoinductive material,which is suitable for injection.Agneta Vezenkova Janis Locs 2022Bioactive Materials2022,7,11:2
6Production of asiaticoside from centella(Centella asiatica L.Urban)cells in bioreactor显示文摘Objective:To investigate the effects of some culture conditions on production of asialicoside from centella(Centella asiatica L.Urban)cells cultured in 5-L bioreactor.Methods:The centell cell suspension culture was conducted in 5-L bioreactor to investigate the growth and asiaticoside accumulation under various conditions.Asiaticoside content was determined by HPLC analysis.Results:The results showed that the cell growth and asiaticoside accumulation peaked after 24d of culture at an agitation speed of 150 r/min and aeration rate of 2.5 L/min.The cell biomass reached a maximum value of 302.45 g fresh weight(31.43 g dry weight)and growth index of 3.03with inoculum size of 100 g.However,asiaticoside content was the highest(60.08 mg/g dry weight)when culture was initiated with an inoculum size of 50 g.Conclusions:The present study found the suitable conditions for growth of centella cells and their asiaticoside production in bioreactor.Nguyen Hoang Loc Nguyen Thi Duy Nhat 2013Asian Pacific Journal of Tropical Biomedicine2013,3,10:2
7越南蕨类植物的新记载(1)(英文)显示文摘报道了越南6种新记载的蕨类植物,包括分布和简短讨论:Christenseniaassamica(Griff.)Ching,Arthropterisrepens(Brack.)C.Chr.,CyrtomiumhemionitisH.Christ,Cyrtogonellumsi-chouensisS.K.Wu&Musuta,DryopterisconjugataChing,andLepisorussinensis(H.Christ)Ching.武素功 向建英 Phan Ke Loc 2005云南植物研究2005,27,3:2
8Enhanced insect resistance in Thai rice varieties generated by particle bombardment显示文摘TINJUANGJUN P LOC N T GATEHOUSE A M R 2000Molecular Breeding2000,6,:1
9In vivo imaging of muscarinic cholinergic receptors in temporal lobe epilepsy with a new PET tracer: 4-bromodexetimide 显示文摘Dupont S Semah F Loc'h C 1999J Nucl Med1999,40,6:1
10Expression of multiple insecticidal genes confers broad resistance against a range of different rice pests显示文摘Maqbool S B Riazuddin S Loc N T 2001Mol Breed2001,7,:1
11Alternative Fuel Reburning显示文摘 Vladimir M Z Loc H 1999Fuel1999,78,3:1
12Improving traversability of quadruped walking robots using body movemen in 3D rough terrains显示文摘Vo-Gia Loc Ig Mo Koo Duc Trong Tran 0,,12:1
13Stability of black tea polyphenol, theaflavin, and identification of theanaphtho-quinone as its major radical reaction product显示文摘JhooJW LoC Y LiS M 2005J Agric Food Chem2005,53,:1
14Decisions to donate bone marrow: The role of attitudes and subjective norms across cultures显示文摘Bagozzi R P Lee K H Van Loc M F 2001Psychology and Health2001,16,1:1
15Numerical solution of the early stage of unsteady viscous flow around a circular cylinder: A comparison with experimental visualization and measurements显示文摘Loc T P Bouard R 1985Journal of Fluid Mechanics1985,160,:1
16Patterns of protein oxida- tion in Arabidopsis seeds and during germination 显示文摘I Claudette J Loc R Yoann L 2005Plant Physiology2005,138,:1
17Dopaminergie function and do- pamine transporter binding assessed with positron ernis~sion tomography in Parkinson disease显示文摘Ribeiro M J Vidaiihet M Loc'h C 2002Arch Neurol2002,59,4:1
18Bacteriophage therapy to reduce Campylobacter jejuni colonization of broiler chickens 显示文摘Loc Carrillo C Atterbury R J el-Shibiny A 2005Applied and Environmental Microbiology2005,71,11:1
19gemoval of sm&ll &nd middle molecules by convective techniques显示文摘Loc&telli F Difilippo 8 M&nzoni C 2000Nephrol Di&l Tmnspl&nt2000,15,2:1
20Normal and tangential force-displacement relations for frictional elasto-plastic contact of spheres 显示文摘Loc Vu-Quoc Zhang Xiang Lesburg L 2001International Journal of Solids and Structures2001,38,36:1
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