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196篇 您的检索式:作者名="H. Gao"
    题名 作者 年代 出处 被引量
1Nitrogen Cycling and Losses Under Rice-Wheat Rotations with Coated Urea and Urea in the Taihu Lake Region显示文摘A lysimeter experiment with undisturbed soil profiles was carried out to study nitrogen cycling and losses in a paddy soil with applications of coated urea and urea under a rice-wheat rotation system in the Taihu Lake region from 2001 to 2003. Treatments for rice and wheat included urea at conventional, 300 (rice) and 250 (wheat) kg N ha-1, and reduced levels, 150 (rice) and 125 (wheat) kg N ha-1, coated urea at two levels, 100 (rice) and 75 (wheat) kg N ha-1, and 150 (rice) and 125 (wheat) kg N ha-1, and a control with no nitrogen arranged in a completely randomized design. The results under two rice-wheat rotations showed that N losses through both NH3 volatilization and runoff in the coated urea treatments were much lower than those in the urea treatments. In the urea treatments N runoff losses were significantly (P < 0.001) positively correlated (r = 0.851) with applied N. N concentration in surface water increased rapidly to maximum two days after urea application and then decreased quickly. However, if there was no heavy rain within five days of fertilizer application, the likelihood of N loss by runoff was not high. As the treatments showed little difference in N loss via percolation, nitrate N in the groundwater of the paddy fields was not directly related to N leaching. The total yield of the two rice-wheat rotations in the treatment of coated urea at 50% conventional level was higher than that in the treatment of urea at the conventional level. Thus, coated urea was more favorable to rice production and environmental protection than urea.WANG Xiao-Zhi ZHU Jian-Guo GAO Ren H. YASUKAZU FENG Ke 2007Pedosphere2007,17,1:31
2EGF promoter SNPs, plasma EGF levels and risk of breast cancer in Chinese women显示文摘Wang, Y. 2008南京医科大学学报(自然科学版)2008,28,12:32
3Aquaporin-4 deficiency down-regulates glutamate uptake and GLT-1 expression in astrocytes显示文摘Zeng, X. N. Sun, X. L. Gao, L. Fan, Y. Ding, J. H. Hu, G. 2007南京医科大学学报(自然科学版)2007,27,5:20
4THE INFLUENCE OF CAVITY DAMAGE ON MECHANICAL PROPERTIES OF SUPERPLASTICALLY-DEFORMED MATERIALS AND ITS PREDICTION显示文摘Aluminium alloy LY12CZ sheet without any pre-treatment has been used to study the influence of cavity damage on the mechanical properties of the superplastically-deformed materials room temper- ature. The experimental results show that: (1) the lower the rate of cavitation as the superplastic strain increases, the higher the superplasticity is; (2) the mechanical properties of superplastically- deformed materials at room temperature decrease as the superplastically-deformed strain increases, especially, a noteworthy decrease in elasticity modulus, yield strenth and ultimate strength at room temperature begins to appear as the level of cavitation by area comes up to about 4%, while at the same level the reduction in area drops down a very large quantity. Then, a three-layer back- propagation neural network has been developed to predict the machanichl properties of the superplasti- cally-deformed material.The results acquired from the neural network are veryM. B. Liu, Z. C. Zhao,H. Gao,M. Q. Li and S. C. Wu College of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China 2000Acta Metallurgica Sinica(English Letters)2000,13,2:18
5Effects of welding parameters and post-heat treatment on mechanical properties of friction stir welded AA2195-T8 Al-Li alloy显示文摘In this study, the effects of main welding parameters(rotation speed(ω) and welding speed(v)) on the microstructure, micro-hardness distribution and tensile properties of friction stir welded(FSW)2195-T8 Al-Li alloy were investigated. The effects of T6 post-treatments at different solution and aging conditions on the mechanical properties and microstructure characteristics of the FSW joints were also investigated. The results show that with increasing and v, both strength and elongation of the joints increase first, and then decrease with further increase of and v. All the joints under varied welding parameters show significant strength loss, and the strength reaches only 65% of the base metal. The effect of T6 post-heat treatment on the mechanical properties of the joints depends on the solution and aging conditions. Two heat treatment processes(480℃× 0.5 h quenching + 180℃× 12 h,520℃× 0.5 h quenching + 180℃× 12 h aging) are found to increase the joint strength. Furthermore,low temperature quenching(480℃) is more beneficial to the joint strength. The joint strength can reach 85% of the base metal. Whereas both low temperature aging(140℃× 56 h) and stepped aging(100℃× 12 h + 180℃× 3 h) processes decrease the joint strength. After heat treatment all the joints show decreased ductility due to the obvious grain coarsening in the nugget zone(NZ) and thermo-mechanically affected zone(TMAZ).J. Zhang X.S. Feng J.S. Gao H. Huang Z.Q. Ma L.J. Guo 2018Journal of Materials Science & Technology2018,34,1:16
6Chemical vapor deposition growth of large-scale hexagonal boron nitride with controllable orientation显示文摘有一致厚度的大域的六角形的硼氮化物(h-BN ) 的化学蒸汽免职(CVD ) 合成是很挑战性的,主要由于这材料的极其高的成核密度。此处,我们报导晶片规模的成功的生长,有大单人赛水晶的领域尺寸的高质量的 h-BN 单层电影,吗直到~ 72 ??????????????????????????慮潮档湡敮獬???????慮潮畴敢??洠獥灯牯????  ??Xiuju Song Junfeng Gao Yufeng Nie Teng Gao Jingyu Sun Donglin Ma Qiucheng Li Yubin Chen Chuanhong Jin Alicja Bachmatiuk Mark H. Rummeli Feng Ding Yanfeng Zhang Zhongfan Liu 2015Nano Research2015,8,10:12
7Field trial of an HTS filter system on a CDMA base station显示文摘This paper presents the field trial results of a high temperature superconductor filter system (HTSFS) in a code division multiple access (CDMA) mobile communication base station (BTS) in Tangshan, China. The center frequency of the HTSFS is 830 MHz with 1.4% fractional bandwidth. The noise figure (NF) of the HTSFS, including connectors and cables, is 0.8 dB. The field trial results show that after the HTSFS was installed in the receiver front-end of a CDMA base station, the transmitting power of handset was decreased by 3.1 dB on average. Up to now, the HTSFS has been running steadily in the base station for more than 22 months, demonstrating the reliability and stability of the system.YIN ZheSheng WEI Bin CAO BiSong WANG Xin GUO XuBo ZHANG XiaoPing GAO LongMa PIAO YunLong ZHU MaFeng LIANG Yong WANG Fan H. PIEL B. AMINOV F. AMINOVA M. GETTA S. KOLESOV A. KNACK N. PUPETER D. WEHLER 2007Chinese Science Bulletin2007,52,2:7
8Preparation of New Poly Silicate Iron Coagulants and Their Coagulation Property on Micro-polluted Water显示文摘L.P. Wang X.F. Yan X. XU A.B. Xu H. Qi Z.D. Zou N.Y. Gao 2011Journal of Environmental Science and Engineering2011,5,1:6
9Local hypothermia and optimal temperature for stroke therapy in rats显示文摘冷盐溶液的 intravascular 注入有效地导致的背景本地降低体温在中风减少大脑损坏。我们进一步在我们的学习决定了本地降低体温的最佳的温度。78 只成年男 Sprague Dawley 老鼠(260-300 g ) 随机被划分成 3 个组的方法:组 A,没有冷盐的注入(n=-26 )( 控制组) 的 ischemia/reperfusion;组 B,注入与 20 在灌注(n=26 ) 前盐;组织 C:有在灌注(n=26 ) 前盐的 10 ~ C 的注入。在每个组,我们选择了 15 只老鼠因为监视物理索引和大脑(外皮和 striatum ) 和身体(肛门) 的温度,大脑梗塞体积的测量,对神经病学的赤字的评价和幸存在 48 个小时灌注评价。从各个的 8 只老鼠组织的另外一个为在灌注以后在 48 个小时检验大脑浮肿, 3 由电子显微镜学(他们) 为组织学的观察从各个组织的另外一个和轻显微镜学(LM ) 被选择。在那里的结果不在考试期间是在为物理索引的 3 个组之中的重要差别(F (2,45 )=0.577, P=0.568;F (2, 45 )= 0.42,为血压的 P=0.78 和血气体分析,分别地) 。大脑温度显著地与另外的组相比在组 C 被减少(F (2, 45 )=37.074, P=0.000;F (2, 45 )=32.983, P=0.000 外皮和 striatum 温度分别地) 当在在在灌注以后的组 A 和 B 或 C 之间的直肠的温度的差别不是重要的时(F (2, 45 )= 0.17115, P=0.637 ) 。并且大脑梗塞体积显著地在组 C 被减少(从 40%?? 獲有 ?? ″ ?栠灡潬祴数WU Hao JIANG Li-dan Karsten H. Wrede JI Xun-ming ZHAO Xi-qing TIAN Xin GAO Yu-fei LING Feng 2009Chinese Medical Journal2009,,13:5
10Regional ozone pollution and observation-based approach for analyzing ozone–precursor relationship during the PRIDE-PRD2004 campaign显示文摘Y.H. Zhang H. Su L.J. Zhong Y.F. Cheng L.M. Zeng X.S. Wang Y.R. Xiang J.L. Wang D.F. Gao M. Shao S.J. Fan S.C. Liu 2008Atmospheric Environment2008,,25:5
11Effects of PI3-k/Akt short hairpin RNA on proliferation, fibronectin production and synthesis of thrombospondin-1 and transforming growth factor-beta(1 ) in glomerular mesangial cells induced by sublytic C5b-9 complexes显示文摘Gao, L. Zhang, Y. Qiu, W. Xu, W. Feng, X. Ren, J. Jiang, X. Wang, H. Zhao, D. Wang, Y. 2009南京医科大学学报(自然科学版)2009,29,3:5
12Possible effect of ENSO on annual sediment discharge of debris flows in the Jiangjia Ravine based on Morlet wavelet transforms显示文摘The multi-time-scale structures of an annual sediment discharge series of debris flow in the Jiangjia Ravine and the Southern Oscillation index are analysed using the method of Morlet wavelet transformations. The possible effects of El Nio episodes on the annual sediment discharge are discussed by comparing the period variations of ENSO and the discharge. The results show that the annual sediment discharge series of debris flow is related to El Nio episodes. Generally, the annual sediment discharge of debris flow is less than usual during an El Nino episode and debris flow is less active. On the contrary, the annual sediment discharge of debris flows is greater than usual during a La Nia episode and debris flows are more frequent. There is a relationship between the annual sediment discharges of debris flow in the Jiangjia Ravine and the summer Southern Oscillation index, with both having quasi-periodic variations of 2 and 5–6 years.J. H. ZHANG F. Q. WEI S. Z. LIU C. GAO 2008International Journal of Sediment Research2008,23,3:5
13Pseudomonas stutzeri as a novel biocatalyst for pyruvate production from DL-lactate显示文摘Hao, J. R. Ma, C. Q. Gao, C. Qiu, J. H. Wang, M. Zhang, Y. N. Cui, X. Xu, P. 2007中国生物学文摘2007,21,4:4
14Extensive desulfurization of diesel by Rhodococcus erythropolis显示文摘Zhang, Q. Tong, M. Y. Li, Y. S. Gao, H. J. Fang, X. C. 2007中国生物学文摘2007,21,4:4
15Scalable and ultrafast epitaxial growth of single-crystal graphene wafers for electrically tunable liquid-crystal microlens arrays显示文摘The scalable growth of wafer-sized single-crystal graphene in an energy-efficient manner and compatible with wafer process is critical for the killer applications of graphene in high-performance electronics and optoelectronics. Here, ultrafast epitaxial growth of single-crystal graphene wafers is realized on singlecrystal Cu90Ni10(1 1 1) thin films fabricated by a tailored two-step magnetron sputtering and recrystallization process. The minor nickel(Ni) content greatly enhances the catalytic activity of Cu, rendering the growth of a 4 in. single-crystal monolayer graphene wafer in 10 min on Cu90Ni10(1 1 1), 50 folds faster than graphene growth on Cu(1 1 1). Through the carbon isotope labeling experiments, graphene growth on Cu90Ni10(1 1 1) is proved to be exclusively surface-reaction dominated, which is ascribed to the Cu surface enrichment in the Cu Ni alloy, as indicated by element in-depth profile. One of the best benefits of our protocol is the compatibility with wafer process and excellent scalability. A pilot-scale chemical vapor deposition(CVD) system is designed and built for the mass production of single-crystal graphene wafers, with productivity of 25 pieces in one process cycle. Furthermore, we demonstrate the application of single-crystal graphene in electrically controlled liquid-crystal microlens arrays(LCMLA), which exhibit highly tunable focal lengths near 2 mm under small driving voltages. By integration of the graphene based LCMLA and a CMOS sensor, a prototype camera is proposed that is available for simultaneous light-field and light intensity imaging. The single-crystal graphene wafers could hold great promising for highperformance electronics and optoelectronics that are compatible with wafer process.Bing Deng Zhaowei Xin Ruiwen Xue Shishu Zhang Xiaozhi Xu Jing Gao Jilin Tang Yue Qi Yani Wang Yan Zhao Luzhao Sun Huihui Wang Kaihui Liu Mark H. Rummeli Lu-Tao Weng Zhengtang Luo Lianming Tong Xinyu Zhang Changsheng Xie Zhongfan Liu Hailin Peng 2019Science Bulletin2019,64,10:4
16Enzymatic esterification between n-alcohol homologs and n-caprylic acid in non-aqueous medium under microwave irradiation显示文摘Huang, W. Xia, Y. M. Gao, H. Fang, Y. J. Wang, Y. Fang, Y. 2007中国生物学文摘2007,21,1:4
17Coarse grained molecular dynamics and theoretical studies of carbon nanotubes entering cell membrane显示文摘由碳 nanotubes (CNT ) 能进入的最近的试验性的观察激发了动物房间,这里,我们进行粗糙的颗粒的分子的动力学和在 CNT 的家之间的内在的相互作用机制和类脂化合物双性人层的理论研究。结果显示那个 CNT 房间相互作用被货车 der Waals 和恐水病的力量统治,并且那 CNT 与足够地小的半径当更大的试管趋于经由包的机制进入房间时,能直接通过房间膜穿透。理论模型被建议在入口机制的转变解释观察尺寸效果。Xinghua Shi Yong Kong H. Gao 2008Acta Mechanica Sinica2008,24,2:4
18Activation of liver X receptors inhibits pancreatic islet beta cell proliferation through cell cycle arrest显示文摘Meng, Z. X. Nie, J. Ling, J. J. Sun,J. X. Zhu,Y. X. Gao,L. Lv,J. H. Zhu,D. Y. Sun,Y. J. Han,X. 2009南京医科大学学报(自然科学版)2009,29,3:4
19Monitoring vegetation phenology using MODIS显示文摘Xiaoyang Zhang Mark A. Friedl Crystal B. Schaaf Alan H. Strahler John C.F. Hodges Feng Gao Bradley C. Reed Alfredo Huete 2002Remote Sensing of Environment2002,,3:4
20The level of oncogene H-Ras correlates with tumorigenicity and malignancy显示文摘Normal bovine adrenocortical cells and some human fibroblasts can be transformed by SV40T and H-Ras in a Ras-dependent manner. We recently reported that high levels of Ras derived from 5' LTR of retrovirrus can induce highly malignant and fast growing tumors, while lower levels of Ras derived from internal ribosome entry site(IRES) promotes slower tumor growth and loss of malignancy. Ras derived from CMV promoters resulted in much lower Ras levels and loss of tumor malignancy and growth. Further studies showed that the tumors formed in the presence of lower levels of Ras and dominant negative P53(P53DD) had fewer apoptotic cells and grew faster than the tumors formed from cells with same level Ras and SV40T. Our studies suggest that low levels of Ras are insufficient to inhibit apoptosis induced by pRb inactivation. In contrast, high levels of Ras not only allow normal cells to exit senescence and form tumors, but also protect against pRb inhibition-induced cell apoptosis.Sun, B. C. Gao, Y. Deng, L. Li, G. Q. Cheng, F. Wang, X. H. Nanjing Med Univ, Liver Transplantat Ctr, Affiliated Hosp 1, Jiangsu 210029, Peoples R China. Nanjing Med Univ, Liver Transplantat Ctr, Ctr Canc, Jiangsu 210029, Peoples R China. 2008南京医科大学学报(自然科学版)2008,28,6:3
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