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| 1 | Analysis of heat transfer of loop heat pipe used to cool high power LED显示文摘A novel loop heat pipe(LHP)cooling device for high power LED is developed.The thermal capabilities, including startup performance,temperature uniformity and thermal resistance of the loop heat pipe under different heat loads and incline angles have been investigated experimentally.The obtained results indicate that the thermal resistance of the heat pipe heat sink is in the range of 0.19―3.1 K/W,the temperature uniformity in the evaporator is controlled within 1.5℃,and the junction temperature of high power LED can be controlled steadily under 100℃for a heat load of 100 W. | LU XiangYou HUA ZeZhao LIU MeiJing CHENG YuanXia | 2009 | Science China(Technological Sciences)2009，52，12： | 5 |
| 2 | Genome wide association study identifies SNPs associated with fatty acid composition in Chinese Wagyu cattle显示文摘Background: Fatty acids are important traits that affect meat quality and nutritive values in beef cattle. Detection of genetic variants for fatty acid composition can help to elucidate the genetic mechanism underpinning these traits and promote the improvement of fatty acid profiles. In this study, we performed a genome-wide association study(GWAS) on fatty acid composition using high-density single nucleotide polymorphism(SNP) arrays in Chinese Wagyu cattle.Results: In total, we detected 15 and 8 significant genome-wide SNPs for individual fatty acids and fatty acid groups in Chinese Wagyu cattle, respectively. Also, we identified nine candidate genes based on 100 kb regions around associated SNPs. Four SNPs significantly associated with C14:1 cis-9 were embedded with stearoyl-CoA desaturase(SCD), while three SNPs in total were identified for C22:6 n-3 within Phospholipid scramblase family member 5(PLSCR5), Cytoplasmic linker associated protein 1(CLASP1), and Chymosin(CYM). Notably, we found the top candidate SNP within SCD can explain ~ 7.37% of phenotypic variance for C14:1 cis-9.Moreover, we detected several blocks with high LD in the 100 kb region around SCD. In addition, we found three significant SNPs within a 100 kb region showing pleiotropic effects related to multiple FA groups(PUFA,n-6, and PUFA/SFA), which contains BAI1 associated protein 2 like 2(BAIAP2 L2), MAF bZIP transcription factor F(MAFF),and transmembrane protein 184 B(TMEM184 B).Conclusions: Our study identified several significant SNPs and candidate genes for individual fatty acids and fatty acid groups in Chinese Wagyu cattle, and these findings will further assist the design of breeding programs for meat quality in cattle. | Zezhao Wang Bo Zhu Hong Niu Wengang Zhang Ling Xu Lei Xu Yan Chen Lupei Zhang Xue Gao Huijiang Gao Shengli Zhang Lingyang Xu Junya Li | 2019 | Journal of Animal Science and Biotechnology2019，10，2： | 4 |
| 3 | Polycrystalline diamond MESFETs by Au-mask technology for RF applications显示文摘Metal-semiconductor field effect transistors (MESFETs) were fabricated on H-terminated polycrystalline diamond.The DC characteristics of the p-channel MESFET showed a maximum drain current density of 204 mA/mm at a gate-source voltage of 6 V,and a maximum transconductance of 20 mS/mm at a gate-source voltage of 1.5 V.The small signal S-parameters of MESFET with 2 100 m gate width and 2 m gate length were measured.An extrinsic cut-off frequency (fT) of 1.7 GHz and the maximum oscillation frequency (fmax) of 2.5 GHz were obtained,which was the first report on diamond MESFETs with RF characteristics in China. | FENG ZhiHong WANG JingJing HE ZeZhao DUN ShaoBo YU Cui LIU JinLong ZHANG PingWei GUO Hui LI ChengMing CAI ShuJun | 2013 | Science China(Technological Sciences)2013，56，4： | 2 |
| 4 | Source-field-plated Ga_2O_3 MOSFET with a breakdown voltage of 550 V显示文摘Ga_2O_3 metal–oxide–semiconductor field-effect transistors(MOSFETs) with high-breakdown characteristics were fabricated on a homoepitaxial n-typed β-Ga_2O_3 film, which was grown by metal organic chemical vapor deposition(MOCVD) on an Fedoped semi-insulating(010) Ga_2O_3 substrate. The structure consisted of a 400 nm unintentionally doped(UID) Ga_2O_3 buffer layer and an 80 nm Si-doped channel layer. A high k HfO_2 gate dielectric film formed by atomic layer deposition was employed to reduce the gate leakage. Moreover, a source-connected field plate was introduced to enhance the breakdown characteristics. The drain saturation current density of the fabricated device reached 101 mA/mm at V_(gs) of 3 V. The off-state current was as low as 7.1 ×10^(-11) A/mm, and the drain current I_(ON)/I_(OFF) ratio reached 10~9. The transistors exhibited three-terminal off-state breakdown voltages of 450 and 550 V, corresponding to gate-to-drain spacing of 4 and 8 μm, respectively. | Yuanjie Lü Xubo Song Zezhao He Yuangang Wang Xin Tan Shixiong Liang Cui Wei Xingye Zhou Zhihong Feng | 2019 | Journal of Semiconductors2019，40，1： | 1 |
| 5 | Experimental measurement and theoretical analyses of the freezing-thawing processes around a probe显示文摘 | ZHANG Jie HUA Zezhao CHEN Ertong | 2000 | CryoLetters2000，21，4： | 1 |
| 6 | Effects of greezing rates and fimethyl dulfoxide concentrations on thermal ex- pansion of rabbit sorta during greezing phase change as measured by thermo mechanical snalysis 显示文摘 | Xu Yi Hua Zezhao Sun Dawen | 2007 | Journal of Biomech2007，40，： | 1 |
| 7 | Analyses of thermal stress and fracture during cryopreservation of blood vessel显示文摘 | Hua Zezhao Xu Hongyan Zhou Guoyan | 2001 | Science in China(Series E)2001，44，2： | 1 |
| 8 | Experimental measurement and theoretical analyses of the freezing thawing processes around a probe 显示文摘 | Zhang Jie Hua Zezhao Chen Ertong | 2000 | CryoLetters2000，21，4： | 1 |
| 9 | Cryognrc themophysicral studies for clinical medicine显示文摘 | Hua Zezhao | 2002 | J Tighun Science Techmobgy2002，7，2： | 1 |
| 10 | Analyses of thermal stress and fracture during cryopreservation of blood vessel显示文摘 | Hua Zezhao Xu Hongyan Zhou Guoyan Liu Jinfen Huang Huimin Ding Wenxiang | 2001 | Science in China Series E: Technolgical Science2001，，2： | 1 |
| 11 | Analyses of Thermal Stress and Fracture during Cryopreservation of Blood Vessel显示文摘 | Hun Zezhao Xu Hongyan Zhou Guoyan | 2001 | Science in China(Series E)2001，2，： | 1 |
| 12 | Cryopreservation and xenotransplantation studies of microencapsulated rat pancreatic islets 显示文摘 | Li Baoguo Hua Zezhao | 2002 | CryoLetters2002，23，： | 1 |
| 13 | Experimental measurement and theoretical analyses of the freezing thawing processes around a probe 显示文摘 | Zhang Jie Hua Zezhao Chen Ertong | 2000 | CryoLetters2000，21，24： | 1 |
| 14 | Epitaxial graphene gas sensors on SiC substrate with high sensitivity显示文摘2D material of graphene has inspired huge interest in fabricating of solid state gas sensors.In this work,epitaxial graphene,quasi-free-standing graphene,and CVD epitaxial graphene samples on SiC substrates are used to fabricate gas sensors.Defects are introduced into graphene using SF6 plasma treatment to improve the performance of the gas sensors.The epitaxial graphene shows high sensitivity to NO2 with response of 105.1%to 4 ppm NO2 and detection limit of 1 ppb.The higher sensitivity of epitaxial graphene compared to quasi-free-standing graphene,and CVD epitaxial graphene was found to be related to the different doping types of the samples. | Cui Yu Qingbin Liu Zezhao He Xuedong Gao Enxiu Wu Jianchao Guo Chuangjie Zhou Zhihong Feng | 2020 | Journal of Semiconductors2020，41，3： | 0 |
| 15 | Performance of hydrogenated diamond field-effect transistors on single and polycrystalline diamond显示文摘In this work,we investigate the influence of defect concentration of the diamond substrates on the performance of hydrogen-terminated diamond field-effect transistors by Raman spectra,pulsed I–V characteristics analysis,and radio frequency performances measurements.It is found that a sample with higher defect concentration shows larger drain-lag effect and lower large-signal output power density.Defects in the diamond act as traps in the carrier transport and have a considerable influence on the large-signal output power density of diamond field-effect transistors.This work should be helpful for further performance improvement of the microwave power diamond devices. | Rui Zhou Cui Yu Chuangjie Zhou Jianchao Guo Zezhao He Yanfeng Wang Feng Qiu Hongxing Wang Shujun Cai Zhihong Feng | 2020 | Journal of Semiconductors2020，41，12： | 0 |
| 16 | Receptivity and structural sensitivity study of the wide vaneless diffuser flow with adjoint method显示文摘The stability of the flow in the vaneless diffuser of a centrifugal compressor is studied with the linear theory. The characteristics of direct and adjoint perturbation modes are investigated,and the receptivity of the instability mode to momentum forcing or mass injection is identified based on the adjoint modes. Analysis shows that the perturbation with the largest amplitude is located at the outlet of the vaneless diffuser, while the highest-receptivity region is located in the middle of the vaneless diffuser along the radial direction. The large difference between the direct and adjoint modes indicates that the instability mechanism cannot be identified from a study of either eigenmode separately. Therefore, the structural sensitivity analysis is adopted to study the feedback of the instability mode. The structural sensitivity of the eigenvalue which is proportional to the perturbation pressure and velocity is used to explain the mechanism of flow control for the vaneless diffuser. | Xiaocheng ZHU Chenxing HU Zezhao LIU Hao LIU Zhaohui DU | 2018 | Chinese Journal of Aeronautics2018，31，8： | 0 |
| 17 | Variability:Human nature and its impact on measurement and statistical analysis显示文摘The world is colorful,different,and diverse!So are humans.Human variability refers to the variability among individuals,which could be the variability of a human trait(e.g.,body fat percent),or the difference in the response of a trait to a simulation(e.g.,losing or not losing weight when facing the same intervention). | Heng Li Zezhao Chen Weimo Zhu | 2019 | Journal of Sport and Health Science2019，8，6： | 0 |
| 18 | Assessing urban resilience to public health disaster using the rough analytic hierarchy process method:A regional study in China显示文摘In the context of frequent occurrences of disasters worldwide,disaster-coping capability is imperative for risk reduction and contemporary emergency management.The global COVID-19 pandemic since 2020 has further highlighted the significance of resilience construction at different geographical scales.Overall,the conceptual cognition of resilience in disaster management covers multiple elements and has diverse yielding on regional assessment.This study assesses the local resilience to the public health disaster in the prefecture-level cities,focusing on two dimensions consisting of vulnerability and capability in the targeted provincial region of Jiangsu in China.To this end,based on the vulnerability-capability framework,the Rough Analytic Hierarchy Process(Rough AHP)method was applied to the resilience assessment.Drawing upon the criteria derived from literature,the criteria weights were determined with the RAHP method and we assessed urban resilience with census data.In addition,the hierarchical factors contributing to urban resilience were determined using robustness analysis.This research provides constructive ideas for regional disaster reduction and contributes to the government’s capability to improve urban resilience. | Zezhao Liu Rui Ma HuiJia Wang | 2022 | Journal of Safety Science and Resilience2022，3，2： | 0 |
| 19 | A statistical model for the design of rotary HTS flux pumps based on deep-learning neuron network显示文摘Rotory high temperature superconducting(HTS)flux pumps can consistently generate a DC voltage by rotating magnets over superconducting tapes,and thus energize the circuit if a closed loop is formed.The voltage output is a crucial factor to reflect the performance of such an HTS flux pump,which is determined by a set of design specifications,and some of them have been investigated extensively in the current literature.However,no work has been done yet to study the HTS dynamo output voltage by efficiently integrating all the design parameters together.In this paper,a well‐trained deep‐learning neuron network(DNN)with back‐propagation algorithms has been put forward and validated.The proposed DNN is capable of quantifying the output voltage of an HTS dynamo instantly with an overall accuracy of approximately 98%with respect to the simulated values with all design parameters explicitly specified.The model possesses a powerful ability to characterize the output behavior of HTS dynamos by considering multiple design parameters,e.g.,airgap,superconductor tape width,operating frequency,remanent flux density,rotor radius,and permanent magnet width,which have covered all the typical design considerations.The output characteristics of an HTS dynamo against each of the design parameters have been successfully demonstrated using this model.Compared to conventional time‐consuming finite element method(FEM)based numerical models,the proposed DNN model has the advantages of automatic learning,fast computation,as well as strong programmability.Therefore the DNN model can greatly facilitate the design and optimization process for HTS dynamos.An executable application has been developed accordingly based on the DNN model,which is believed to provide a useful tool for learners and designers of HTS dynamos. | Zezhao Wen Hongye Zhang Mengyuan Tian Francesco Grilli Markus Mueller | 2022 | Superconductivity2022，，3： | 0 |
| 20 | The eQTL colocalization and transcriptome‑wide association study identify potentially causal genes responsible for economic traits in Simmental beef cattle显示文摘Background A detailed understanding of genetic variants that affect beef merit helps maximize the efficiency of breeding for improved production merit in beef cattle.To prioritize the putative variants and genes,we ran a com-prehensive genome-wide association studies(GWAS)analysis for 21 agronomic traits using imputed whole-genome variants in Simmental beef cattle.Then,we applied expression quantitative trait loci(eQTL)mapping between the genotype variants and transcriptome of three tissues(longissimus dorsi muscle,backfat,and liver)in 120 cattle.Results We identified 1,580 association signals for 21 beef agronomic traits using GWAS.We then illuminated 854,498 cis-eQTLs for 6,017 genes and 46,970 trans-eQTLs for 1,903 genes in three tissues and built a synergistic network by integrating transcriptomics with agronomic traits.These cis-eQTLs were preferentially close to the transcription start site and enriched in functional regulatory regions.We observed an average of 43.5%improvement in cis-eQTL discovery using multi-tissue eQTL mapping.Fine-mapping analysis revealed that 111,192,and 194 variants were most likely to be causative to regulate gene expression in backfat,liver,and muscle,respectively.The transcriptome-wide association studies identified 722 genes significantly associated with 11 agronomic traits.Via the colocalization and Mendelian randomization analyses,we found that eQTLs of several genes were associated with the GWAS signals of agronomic traits in three tissues,which included genes,such as NADSYN1,NDUFS3,LTF and KIFC2 in liver,GRAMD1C,TMTC2 and ZNF613 in backfat,as well as TIGAR,NDUFS3 and L3HYPDH in muscle that could serve as the candidate genes for economic traits.Conclusions The extensive atlas of GWAS,eQTL,fine-mapping,and transcriptome-wide association studies aid in the suggestion of potentially functional variants and genes in cattle agronomic traits and will be an invaluable source for genomics and breeding in beef cattle. | Wentao Cai Yapeng Zhang Tianpeng Chang Zezhao Wang Bo Zhu Yan Chen Xue Gao Lingyang Xu Lupei Zhang Huijiang Gao Jiuzhou Song Junya Li | 2023 | Journal of Animal Science and Biotechnology2023，14，5： | 0 |
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