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15篇 您的检索式:作者名="Yihe Hu"
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1A framework for the regional critical zone classi?cation: the case of the Chinese Loess Plateau显示文摘The concept of the Earth’s Critical Zone(CZ)—the near-surface heterogeneous environment of our planet—was originally defined to include the land surface,vegetation canopy, rivers, lakes and shallow seas (1)CZ accommodates interactions among air, water, soil, rock and living organisms, and determines the availability of life-sustaining resources needed for the well-being and sustainability of human society. Therefore, there are new opportunities for integrative.Yihe Lü Jian Hu Bojie Fu Paul Harris Lianhai Wu Xiaolin Tong Yingfei Bai Alexis J.Comber Alexis J.Comber 2019National Science Review2019,6,1:4
2Porous tantalum structure integrated on Ti6Al4V base by Laser Powder Bed Fusion for enhanced bony-ingrowth implants:In vitro and in vivo validation显示文摘Despite the widespread application of Ti6Al4V and tantalum(Ta)in orthopedics,bioinertia and high cost limit their further applicability,respectively,and tremendous efforts have been made on the Ti6Al4V-Ta alloy and Ta coating to address these drawbacks.However,the scaffolds obtained are unsatisfactory.In this study,novel high-interface-strength Ti6Al4V-based porous Ta scaffolds were successfully manufactured using Laser Powder Bed Fusion for the first time,in which porous Ta was directly manufactured on a solid Ti6Al4V substrate.Mechanical testing revealed that the novel scaffolds were biomechanically compatible,and the interfacial bonding strength was as high as 447.5 MPa.In vitro biocompatibility assay,using rat bone marrow mesenchymal stem cells(r-BMSCs),indicated that the novel scaffolds were biocompatible.Alkaline phosphatase and mineralized nodule determination demonstrated that the scaffolds favored the osteogenic differentiation of r-BMSCs.Moreover,scaffolds were implanted into rabbits with femur bone defects,and imaging and histological evaluation identified considerable new bone formation and bone ingrowth,suggesting that the scaffolds were well integrated with the host bone.Overall,these results demonstrated good mechanical compatibility,biocompatibility,and osteointegration performance of the novel Ti6Al4V-based porous Ta scaffold,which possesses great potential for orthopedic clinical applications.Pengfei Lei Hu Qian Taomei Zhang Ting Lei Yihe Hu Chao Chen Kechao Zhou 2022Bioactive Materials2022,7,1:3
3Fabrication of bilayer Pd-Pt nanocages with sub-nanometer thin shells for enhanced hydrogen evolution reaction显示文摘The hydrogen evolution reaction (HER),which generates molecular hydrogen through the electrochemical reduction of water,is an important clean-energy technology.Platinum (Pt) is an ideal material for HER electrocatalysts in terms of low overpotential and fast kinetics.An effective method to improve the atom utilization efficiency of Pt is to fabricate Pt-based core-shell or nanocage structures with ultra-thin walls.This paper describes the construction of bilayer palladium (Pd)-Pt alloy nanocages catalyst with enhanced HER catalytic activity.The nanocages were fabricated by etching away the Pd templates of multishelled nanocubes composed of alternate shells of Pd and Pt with well-defined (100) facets.The bilayer Pd-Pt nanocages with sub-nanometer shells have a high dispersion of the active atoms on the outside and inside surfaces of outer layer and inner layer,respectively.Moreover,the Pd-Pt alloy lowers the overpotential for HER and speeds up the reaction rate of HER due to the synergies between Pd and Pt.The rational design of bilayer nanocages provided a novel route for boosting the atom utilization efficiency of Pt catalysts.Yihe Wang Lei Zhang Congling Hu Shengnan Yu Piaoping Yang Dongfang Cheng Zhi-Jian Zhao Jinlong Gong 2019Nano Research2019,12,9:3
4Hydrological Services by Mountain Ecosystems in Qilian Mountain of China: A Review显示文摘Hydrological service is a hot issue in the current researches of ecosystem service, particularly in the upper reaches of mountain rivers in dry land areas, where the Qilian Mountain is a representative one. The Qilian Mountain, where forest, shrubland and grassland consist of its main ecosystems, can provide fresh water and many other ecosystem services, through a series of eco-hydrological process such as precipitation interception, soil water storage, and fresh water provision. Thus, monitoring water regulation and assessing the hydrological service of the Qilian Mountain are meaningful and helpful for the healthy development of the lower reaches of arid and semi-arid areas. In recent 10 years, hydrological services have been widely researched in terms of scale and landscape pattern, including water conservation, hydrological responses to afforestation and their ecological effects. This study, after analyzing lots of current models and applications of geographical information system(GIS) in hydrological services, gave a scientific and reasonable evaluation of mountain ecosystem in eco-hydrological services, by employing the combination of international forefronts and contentious issues into the Qilian Mountain. Assessments of hydrological services at regional or larger scales are limited compared with studies within watershed scale in the Qilian Mountain. In our evaluation results of forest ecosystems, it is concluded that long-term observation and dynamic monitoring of different types of ecosystem are indispensable, and the hydrological services and the potential variation in water supplement on regional and large scales should be central issues in the future research.SUN Feixiang LYU Yihe FU Bojie HU Jian 2016Chinese Geographical Science2016,26,2:2
5Soil Carbon Stock and Flux in Plantation Forest and Grassland Ecosystems in Loess Plateau, China显示文摘Carbon sequestration occurs when cultivated soils are re-vegetated. In the hilly area of the Loess Plateau, China, black locust(Robinia pseudoacacia) plantation forest and grassland were the two main vegetation types used to mitigate soil and water loss after cultivation abandonment. The purpose of this study was to compare the soil carbon stock and flux of these two types of vegetation which restored for 25 years. The experiment was conducted in Yangjuangou catchment in Yan′an City, Shaanxi Province, China. Two adjacent slopes were chosen for this study. Six sample sites were spaced every 35–45 m from summit to toe slope along the hill slope, and each sample site contained three sampling plots. Soil organic carbon and related physicochemical properties in the surface soil layer(0–10 cm and 10–20 cm) were measured based on soil sampling and laboratory analysis, and the soil carbon dioxide(CO2) emissions and environmental factors were measured in the same sample sites simultaneously. Results indicated that in general, a higher soil carbon stock was found in the black locust plantation forest than that in grassland throughout the hill slope. Meanwhile, significant differences in the soil carbon stock were observed between these two vegetation types in the upper slope at soil depth 0–10 cm and lower slope at soil depth 10–20 cm. The average daily values of the soil CO2 emissions were 1.27 μmol/(m2·s) and 1.39 μmol/(m2·s) for forest and grassland, respectively. The soil carbon flux in forest covered areas was higher in spring and less variation was detected between different seasons, while the highest carbon flux was found in grassland in summer, which was about three times higher than that in autumn and spring. From the carbon sequestration point of view, black locust plantation forest on hill slopes might be better than grassland because of a higher soil carbon stock and lower carbon flux.HU Chanjuan LIU Guohua FU Bojie CHEN Liding LYU Yihe GUO Lei 2014Chinese Geographical Science2014,24,4:2
6Identification and characterization of pltZ , a gene involved in the repression of pyoluteorin biosynthesis in Pseudomonas sp. M18显示文摘Xianqing Huang Donghua Zhu Yihe Ge Hongbo Hu Xuehong Zhang Yuquan Xu 2004FEMS Microbiology Letters2004,,2:1
7Seasonal variation in blood pressure and its relationship with outdoor temperature in 10 diverse regions of China: the China Kadoorie Biobank显示文摘Sarah Lewington Liming Li Paul Sherliker Yu Guo Iona Millwood Zheng Bian Gary Whitlock Ling Yang Rory Collins Junshi Chen Xianping Wu Shaojie Wang Yihe Hu Li Jiang Liqiu Yang Ben Lacey Richard Peto Zhengming Chen 2012Journal of Hypertension2012,,7:1
8A lateral field excited liquid acoustic wave sensor显示文摘HU Yihe FRENCH L A VETELINO J F 2004IEEE Trans Ultrasonics Ferroelectrics and Frequency Control2004,51,11:1
9显示文摘Hu Yihe French L A Radecsky J K 2004IEEE Trans Ultrason Ferroelect Freq Contr2004,51,11:1
10Unsafe Riding Practice among Electric Bikers in Suzhou,China:An Observational Study显示文摘Yang Jie Hu Yihe Du Wei 2014BMJ Open2014,4,00:1
11MOF-derived spherical Ni_(x)S_(y)/carbon with B-doping enabling high supercapacitive performance显示文摘This work uses a simple Ni-metal organic framework(Ni-MOF)to generate a uniform metal-containing carbon hybrid structure of Ni/C by in-situ pyrolysis.Then,after NaBH_(4) treatment and hydrothermal vul-canization of Ni/C,multiphase B-doped Ni_(x)S_(y) nanoparticles can be obtained and uniformly anchored in the carbon skeleton,forming a highly porous flower-shaped B-Ni_(x)S_(y)/C composite.The positive role of B doping was theoretically confirmed by Density Function Theory(DFT)calculations.The MOF-derived car-bon framework has porous,conductive,and continuous features beneficial for fast charge transfer.There are also multiple Ni-sulfide phases in B-Ni_(x)S_(y)/C,dominated by hexagonal NiS,hexagonal Ni 2 S 3,and cu-bic Ni_(3)S_(4),which give rich valance state and are expected to bring active electrochemical reactions.In addition,the boronation process by the reducing agent of NaBH_(4) is also proved beneficial to bring high capacitance,possibly due to the incorporation of more active sites by B.Therefore,the B-Ni_(x)S_(y)/C compos-ite electrode delivers a high specific capacity of 1250.4 C g^(-1) at 1 A g^(-1) and excellent rate performance.The B-Ni_(x)S_(y)/C-based asymmetric supercapacitor also shows promising prospects for future energy stor-age devices,delivering high cyclability with capacitance retention of 87.6%after 7000 cycles.This work proves the efficiency of MOF-derived carbon framework and B-doping in improving metal sulfide’s electrochemical performances.Jingjing Hu Yan Shi Li Sun Feng Xie Kaiyue Gao Yaru Qu Hankun Tan Yihe Zhang 2023Journal of Materials Science & Technology2023,,22:0
12A direct laser-synthesized magnetic metamaterial for low-frequency wideband passive microwave absorption显示文摘Microwave absorption in radar stealth technology is faced with challenges in terms of its effectiveness in low-frequency regions.Herein,we report a new laser-based method for producing an ultrawideband metamaterial-based microwave absorber with a highly uniform sheet resistance and negative magnetic permeability at resonant frequencies,which results in a wide bandwidth in the L-to S-band.Control of the electrical sheet resistance uniformity has been achieved with less than 5%deviation at 400Ωsq^(-1)and 6%deviation at 120Ωsq^(-1),resulting in a microwave absorption coefficient between 97.2%and 97.7%within a1.56–18.3 GHz bandwidth for incident angles of 0°–40°,and there is no need for providing energy or an electrical power source during the operation.Porous N-and S-doped turbostratic graphene 2D patterns with embedded magnetic nanoparticles were produced simultaneously on a polyethylene terephthalate substrate via laser direct writing.The proposed low-frequency,wideband,wide-incident-angle,and high-electromagnetic-absorption microwave absorber can potentially be used in aviation,electromagnetic interference(EMI)suppression,and 5G applications.Yihe Huang Yize Li Kewen Pan Yixian Fang Kai Chio Chan Xiaoyu Xiao Chao Wei Kostya S Novoselov John Gallop Ling Hao Zhu Liu Zhirun Hu Lin Li 2023International Journal of Extreme Manufacturing2023,5,3:0
13The transcription factor CsS40 negatively regulates TCS1 expression and caffeine biosynthesis in connection to leaf senescence in Camellia sinensis显示文摘Caffeine is considered as one of the most important bioactive components in the popular plant beverages tea,cacao,and coffee,but as a wide-spread plant secondary metabolite its biosynthetic regulation at transcription level remains largely unclear.Here,we report a novel transcription factor Camellia sinensis Senescnece 40(CsS40)as a caffeine biosynthesis regulator,which was discovered during screening a yeast expression library constructed from tea leaf cDNAs for activation of tea caffeine synthase(TCS1)promoter.Besides multiple hits of the non-self-activation CsS40 clones that bound to and activated TCS1 promoter in yeast-one-hybrid assays,a split-luciferase complementation assay demonstrated that CsS40 acts as a transcription factor to activate the CsTCS1 gene and EMSA assay also demonstrated that CsS40 bound to the TCS1 gene promoter.Consistently,immunofluorescence data indicated that CsS40-GFP fusion was localized in the nuclei of tobacco epidermal cells.The expression pattern of CsS40 in‘Fuding Dabai’developing leaves was opposite to that of TCS1;and knockdown and overexpression of CsS40 in tea leaf calli significantly increased and decreased TCS1 expression levels,respectively.The expression levels of CsS40 were also negatively correlated to caffeine accumulation in developing leaves and transgenic calli of‘Fuding Dabai’.Furthermore,overexpression of CsS40 reduced the accumulation of xanthine and hypoxanthine in tobacco plants,meanwhile,increased their susceptibility to aging.CsS40 expression in tea leaves was also induced by senescence-promoting hormones and environmental factors.Taken together,we showed that a novel senescence-related factor CsS40 negatively regulates TCS1 and represses caffeine accumulation in tea cultivar‘Fuding Dabai’.The study provides new insights into caffeine biosynthesis regulation by a plant-specific senescence regulator in tea plants in connection to leaf senescence and hormone signaling.Xinzhuan Yao Hufang Chen Antao Ai Fen Wang Shanshan Lian Hu Tang Yihe Jiang Yujie Jiao Yumei He Tong Li Litang Lu 2023Horticulture Research2023,10,9:0
14Fabrication, bacteriostasis and osteointegration properties researches of the additively-manufactured porous tantalum scaffolds loading vancomycin显示文摘Infected bone defects(IBDs)remains a challenging problem for orthopedists.Clinically,routine management for IBDs has two stages:debridement and systematic antibiotics administration to control infection,and secondary grafting to repair bone defects.Whereas the efficacy is not satisfactory,because the overuse of antibiotics may lead to systemic toxicity,and the emergence of drug-resistant bacteria,as well as the secondary surgery would cause additional trauma and economic burden to the patients.Therefore,it is imperative to develop a novel scaffold for one-stage repair of IBDs.In this study,vancomycin(Van)was encapsulated into poly(lactic co-glycolic acid)(PLGA)microspheres through the double emulsion method,which were then loaded into the additively-manufactured porous tantalum(AM-Ta)through gelatin methacryloyl(GelMA)hydrogel to produce the composite Ta/GelMA hydrogel(Gel)/PLGA/vancomycin(Van)scaffolds for repairing IBDs.Physiochemical characterization of the newly-developed scaffold indicated that the releasing duration of Van was over 2 weeks.Biological experiments indicated good biocompatibility of the composite scaffold,as well as bacteriostasis and osteointegration properties,which showed great potential for clinical application.The construction of this novel scaffold would provide new sight into the development of orthopaedic implants,shedding a novel light on the treatment of IBDs.Hu Qian Ting Lei Long Hua Yu Zhang Dongyu Wang Jiangyu Nan Wenbin Liu Yan Sun Yihe Hu Pengfei Lei 2023Bioactive Materials2023,,6:0
15Review of the 2018 Palu Tsunami: Disaster Behavior and Reflections on Disaster Management显示文摘The 2018 Palu M_W7.5 earthquake and tsunami attracted geophysicists' attention for its strike slip focal mechanism and magnitude. We inspected the details of this disaster and discussed its particularity and possible causations. The submarine landslide and special terrain conditions could have contributed to the unusual size of the tsunami. The early warning system and the post disaster response is also reviewed. Efficient social warnings and broadcast systems along with good maintenance is essential. We also found that enhancing publics scientific literacy is the most important way to reduce disaster damage and casualties. Moreover, social conditions and rebuilding difficulties post tsunami are related as reference resources for future disaster management strategies.HU Jiupeng CHEN Yong LI Wen XU Yihe CAI Huiteng 2019Earthquake Research in China2019,33,1:0
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