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1Graphene-based catalysts for electrochemical carbon dioxide reduction显示文摘Electrochemical carbon dioxide(CO2)reduction is considered to be an efficient strategy to produce usable fuels and overcome the concerns regarding global warming.For this purpose,an efficient,earth abundant,and a low cost catalyst has to be designed.It has been found that graphene-based materials could be promising candidates for CO2 conversion because of their unique physical,mechanical,and electronic properties.In addition,the surface of graphenebased materials can be modified by using different strategies,including doping,defect engineering,producing composite structures,and wrapping shapes.In this review,the fundamentals of electrochemical CO2 reduction and recent progress of graphene-based catalysts are investigated.Furthermore,recent studies on graphene-based materials for CO2 reduction are summarized.Amirhossein Hasani Mahider Asmare Teklagne Ha Huu Do Sung Hyun Hong Quyet Van Le Sang Hyun Ahn Soo Young Kim 2020Carbon Energy2020,2,2:7
2Studies on sustainable features of vernacular architecture in different regions across the world:A comprehensive synthesis and evaluation显示文摘Due to the increasing pressure brought by recent global environmental problems,building designers are embracing regionalism and the knowledge of traditional structures,arguing that these structures are energy efficient and highly sustainable.We observe clear evidence of the increasing interest in vernacular architecture among the research community.This study therefore aims to clarify the contents and issues raised in the studies on vernacular architecture and the knowledge and recommendations that can be derived from them.A database of the research is established by collecting many studies from primary sources.Obtained data is carefully refined and categorized into a table where synthesized information is introduced.The results of this study show an uneven geographic and climatic distribution of the studies;the trend in selecting research objectives and research objects;the choice of research methods with a clear shift towards quantitative research methods,and the generic findings from the database of the research.These results can support diverse inquiries about vernacular architecture across the world and be used as a resource or an orientation to support numerous subsequent studies.Anh Tuan Nguyen Nguyen Song Ha Truong David Rockwood Anh Dung Tran Le 2019Frontiers of Architectural Research2019,8,4:6
3Synthesis and characterization of NaYF4:Yb3+,Er3+@silica-N=folic acid nanocomplex for bioimaginable detecting MCF-7 breast cancer cells显示文摘Upconversion nanophosphors are new promising nanomaterials to be used as biolabels for detection and imaging of cancer cells.These nanophosphors absorb long-wavelength excitation radiation in the infrared or near infrared region and emit shorter wavelength,higher energy radiation from ultraviolet to infrared.In this paper,we studied the hydrothermal method and optical properties of the functionalized NaYF4:Yb^3+,Er^3+for biomedical application.After synthesis,these NaYF4:Yb^3+,Er^3+nanophosphors were functionalized with aminosilanes and folic acid.Folic acid binds to the folate receptor on the surface of MCF-7 breast cancer cells and this binding promotes internalization of the nanophosphors via endocytosis.The sizes of the functionalized NaYF4:Yb^3+,Er^3+@silica-N=FA(folic acid)nanophosphors can be controlled with length of the rod about 300-800 nm and diameter of the rod about 100-200 nm.Phase structure of NaYF4:Yb^3+,Er^3+is in hexagonal crystal system.The photo luminescence(PL)spectra of the functionalized NaYF4:Yb^3+,Er^3+@silica-N=FA nanophosphors were measured.These nanophosphors emit in red color with the strongest band at 650 nm under 980 nm excitation.This result can provide NaYF4:Er^3+,Yb^3+@silica-N=FA complex for developing fluorescence label and image tool in cancer biology and medicine.Ha Thi Phuong Tran Thu Huong Le Thi Vinh Hoang Thi Khuyen Do Thi Thao Nguyen Thanh Huong Pham Thi Lien Le Quoc Minh 2019Journal of Rare Earths2019,37,11:5
4A TCP Performance Enhancement Scheme in Infrastructure based Vehicular Networks显示文摘Transmission Control Protocol(TCP) in infrastructure based vehicular networks is dedicated to support reliable Internet services for mobile users.However,an end-toend TCP flow not only experiences some common challenges in wireless mobile networks,such as high packet loss rate,medium access competition,unstable wireless bandwidth,and dynamic topology,etc.,but also suffers from performance degradation due to traffic congestion at the Road-Side Units(RSUs) that connect the wireline and wireless networks.In order to address the challenging issues related to reliable TCP transmissions in infrastructure based vehicular networks,we propose an RSU based TCP(R-TCP) scheme.For wireline source nodes,R-TCP adopts a novel flow control mechanism to adjust transmission rates according to the status of bottleneck link.Specifically,during the short wireless connection time in Infrastructure based vehicular networks,R-TCP quickly chooses an ideal transmission rate for data transmissions instead of activating the slow start algorithm after the connection is established,and successfully avoids the oscillation of the transmission rate.Simulation results show that R-TCP achieves great advantages than some relate proposals in terms of throughput,end-to-end delay,and packet loss rate.HA Le FANG Lijin BI Yuanguo LIU Wei 2015China Communications2015,12,6:5
5软木塞基碳量子点的水热合成及其生物相融荧光成像应用显示文摘以废弃酒瓶软木塞为原料,采用低成本、简单的水热方法合成碳量子点。通过TEM、FTIR、Raman、UV-Vis、PL光谱对碳量子点的结构和光学性能进行分析表征。结果表明,碳量子点的平均直径为6.2±2.7 nm,PL激发谱和碳量子点表面的官能团有关。用硫酸奎宁作为参考,碳量子点的量子效率为1.54%。将获得的碳量子点应用在骨髓间充质干细胞的细胞生物成像上,发现用碳量子点处理后,骨髓间充质干细胞分别在320~380 nm、450~490 nm和450~490 nm范围显示绿色、黄色和红色荧光,表明了碳量子点在荧光成像领域具有潜在的应用价值。Quang Ngo Khoa Hieu Nguyen Ngoc Bao Vo Van Quoc Phuoc Vo Thi Ngoc Le Xuan Diem Doc Luong Quang Tri Nguyen Minh Son Le Vu Truong Son Le Van Thanh Ha Che Thi Cam 2022新型炭材料2022,37,3:3
6Investigation of Punch Resistance of the Allomyrira dichtoloma Beetle Forewing显示文摘Ngoc San Ha Vinh Tung Le Nam Seo Goo 2018Journal of Bionic Engineering2018,15,1:2
7Upconversion luminescence of Gd2O3:Er3+and Gd2O3:Er3+/silica nanophosphors fabricated by EDTA combustion method显示文摘Gd2O3:Er^3+nanophosphors were fabricated by the combustion method in presence of Na2 ethylene diamine tetra acetic acid(EDTA-Na2)as fuel at not high temperature(≤350℃)within a very short time of 5 min.The added concentration of Er^3+ions in Gd2O3 matrix was changed from 0.5 mol%to 5.0 mol%.The X-ray diffraction pattern of samples indicates the monoclinic structure of Gd2O3:Er^3+.The morphology and chemical composition analysis of the Gd2O3:Er^3+samples are characterized by a field emission scanning electron microscope(FESEM)and a Fourier-transform infrared spectrometer(FTIR).The photoluminescence(PL),photo luminescence excitation(PLE)and upconversion(UC)at room temperature of the prepared materials with different concentrations of Er^3+were investigated.The PL of Gd2O3:Er^3+nanomaterials are shown in visible at 545,594,623,648,688 nm under excitation at 275 nm.The emission bands from transitions of Er^3+from 2P3/2 to 4F9/2 are observed,UC luminescent spectra of the Gd2O3:Er^3+/silica nanocomposites under 976 nm excitation show the bands at 548 and 670 nm.The influence of excitation power at 980 nm for transitions were measured and calculated.The results indicate that the upconversion process of Gd2O3:Er^3+/silica is two photons absorption mechanism.The low temperature dependence of UC luminescent intensities of the main bands of Gd2O3:Er^3+was investigated towards development of a nanotemperature sensor in the range of 10-300 K.Le Quoc Minh Tran Kim Anh Nguyen Duy Hung Pham Thi Minh Chau Nguyen Thi Quy Hai Ho Van Tuyen Vu Thi Thai Ha Vu Duc Tu Wieslaw Strek 2019Journal of Rare Earths2019,37,11:2
8Molecular cloning of a human prion protein Cdna显示文摘Kretzschmar HA Stowring LE Westaway D 1986DNA1986,5,4:1
9Torsional strength of pin con- figurations used to fix supracondylar fractures of the humerus in chil- dren 显示文摘Zionts LE MeKellop HA Hathaway R 1994J Bone Joint Surg Am1994,2,:1
10Investigation of power loss and voltage stability limits for large wind farm con- nections to a subtransmission network 显示文摘Le Thu Ha Tapan Kumar Saha 2007IEEE2007,,:1
11Locally weighted learning based hybrid intelligence models for groundwater potential mapping and modeling: A case study at Gia Lai province, Vietnam显示文摘The groundwater potential map is an important tool for a sustainable water management and land use planning,particularly for agricultural countries like Vietnam.In this article,we proposed new machine learning ensemble techniques namely AdaBoost ensemble(ABLWL),Bagging ensemble(BLWL),Multi Boost ensemble(MBLWL),Rotation Forest ensemble(RFLWL)with Locally Weighted Learning(LWL)algorithm as a base classifier to build the groundwater potential map of Gia Lai province in Vietnam.For this study,eleven conditioning factors(aspect,altitude,curvature,slope,Stream Transport Index(STI),Topographic Wetness Index(TWI),soil,geology,river density,rainfall,land-use)and 134 wells yield data was used to create training(70%)and testing(30%)datasets for the development and validation of the models.Several statistical indices were used namely Positive Predictive Value(PPV),Negative Predictive Value(NPV),Sensitivity(SST),Specificity(SPF),Accuracy(ACC),Kappa,and Receiver Operating Characteristics(ROC)curve to validate and compare performance of models.Results show that performance of all the models is good to very good(AUC:0.75 to 0.829)but the ABLWL model with AUC=0.89 is the best.All the models applied in this study can support decision-makers to streamline the management of the groundwater and to develop economy not only of specific territories but also in other regions across the world with minor changes of the input parameters.Hoang Phan Hai Yen Binh Thai Pham Tran Van Phong Duong Hai Ha Romulus Costache Hiep Van Le Huu Duy Nguyen Mahdis Amiri Nguyen Van Tao Indra Prakash 2021Geoscience Frontiers2021,12,5:1
12Scrapie prion proteins are synthesized in neurons显示文摘Kretzschmar HA Prusiner SB Stowring LE 1986Am J Pathol1986,122,:1
13Biomechanical evaluation of vertebmplasty And kypho- plasty with polymethylmethacrylate or calcium phosp- hate cement under Cyclic loading 显示文摘Wilke HA Mehnert U Claes LE 2006Spine ( Phila Pa 1976 )2006,31,25:1
14Ecoregional variations of aboveground biomass and stand structure in evergreen broadleaved forests显示文摘Biotic and abiotic factors control aboveground biomass(AGB)and the structure of forest ecosystems.This study analyses the variation of AGB and stand structure of evergreen broadleaved forests among six ecoregions of Vietnam.A data set of 1731-ha plots from 52 locations in undisturbed old-growth forests was developed.The results indicate that basal area and AGB are closely correlated with annual precipitation,but not with annual temperature,evaporation or hours of sunshine.Basal area and AGB are positively correlated with trees>30 cm DBH.Most areas surveyed(52.6%)in these old-growth forests had AGB of 100–200 Mg ha^-1;5.2%had AGB of 400–500 Mg ha^-1,and 0.6%had AGB of>800 Mg ha^-1.Seventy percent of the areas surveyed had stand densities of 300–600 ind.ha^-1,and 64%had basal areas of 20–40 m^2 ha^-1.Precipitation is an important factor influencing the AGB of old-growth,evergreen broadleaved forests in Vietnam.Disturbances causing the loss of large-diameter trees(e.g.,>100 cm DBH)affects AGB but may not seriously affect stand density.Tran Van Do Mamoru Yamamoto Osamu Kozan Vo Dai Hai Phung Dinh Trung Nguyen Toan Thang Lai Thanh Hai Vu Thanh Nam Trieu Thai Hung Hoang Van Thang Tran Duc Manh Cao Chi Khiem Vu Tien Lam Nguyen Quang Hung Tran Hoang Quy Pham Quang Tuyen Trinh Ngoc Bon Nguyen Thi Thu Phuong Ninh Viet Khuong Nguyen Van Tuan Dang Thi Hai Ha Tran Hai Long Dang Van Thuyet Dang Thinh Trieu Nguyen Van Thinh Tran Anh Hai Duong Quang Trung Nguyen Van Bich Dinh Hai Dang Pham Tien Dung Nguyen Huy Hoang Le Thi Hanh Phan Minh Quang Nguyen Thi Thuy Huong Hoang Thanh Son Nguyen Thanh Son Nguyen Thi Van Anh Nguyen Thi Hoai Anh Pham Dinh Sam Hoang Thi Nhung Hoang Van Thanh Nguyen Huu Thinh Tran Hong Van Ho Trung Luong Bui Kieu Hung 2020Journal of Forestry Research2020,31,5:1
15Effects of menstrual phase on performance and recovery in intense intermittent activity显示文摘Middleton LE Wenger HA 2006Eur J ApplPhysiol2006,96,:1
16Alterations in regional vascular geometry produced by theoretical stent implantation influence distributions of wall shear stress: analysis of a curved coronary artery using 3D computational fluid dynamics modeling显示文摘LaDisa JF Jr Olson LE Douglas HA 2006Biomed Eng Online2006,5,:1
17High-grade ovarian serous carcinoma exhibits significantly higher p16 expression than low-grade serous carcinoma and serous borderline tumour显示文摘Neill CJ McBride HA Connolly LE 0,,06:1
18Characterization and activity of Fe-ZSM-5 catalysts for the total oxidation of phenol in aqueous solutions显示文摘Nguyen Huu Phu Tran Thi Kim Hoa Nguyen Van Tan Hoang Vinh Thang Pham Le Ha 2001Applied Catalysis B Environmental2001,,4:1
19In vitro mutation breeding of Paphiopedilum by ionization radiation显示文摘Le Quang Luan Nguyen Huynh Phuong Uyen Vo Thi Thu Ha 2012Scientia Horticulturae2012,,:1
20Radiographic and clinical comparisons of distal tibia shaft fractures (4 to 11 cm proximal to the plafond):plating versus intramedullary nailing显示文摘Vallier HA Le TT Bedi A 0,,:1
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