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| 1 | 全球环境变化对森林凋落物分解的影响显示文摘全球环境变化将对森林生态系统凋落物的分解和养分循环产生直接和间接的多重影响。就全球环境变化如全球变暖、大气CO2浓度升高、UV-B辐射增强、氮沉降等对凋落物分解影响的研究进展进行了综合述评。影响凋落物分解的内部因素为凋落物基质质量,外部因素包括生物因素(微生物和动物)和非生物因素(温度、水分和土壤性质等)。全球变暖对凋落物分解的非生物作用有正效应,也有负效应。全球变暖对凋落物化学组成虽然只有轻微的影响,但可以通过影响植被的物种组成来间接改变凋落物的产量、化学性质和分解。全球变暖对凋落物分解生物作用的主要影响是增强土壤微生物活性,从而加速凋落物的分解。CO2浓度上升将增加凋落物产量,并通过影响凋落物质量(提高C/N比、木质素/N比等)和生物环境(微生物的数量和活性)而影响分解过程。UV-B辐射和大气N沉降的增加亦对凋落物分解产生直接和间接的影响,但影响效果尚不很清楚,有待进一步的研究。总起来看,全球环境变化将通过影响凋落物的分解速率而对全球碳循环产生重要影响,但由于气候变化和凋落物分解响应的复杂性以及各因子之间的相互作用,气候变化对凋落物分解的总效应尚需更深入的研究来定量化。 | 宋新章 江洪 张慧玲 余树全 周国模 马元丹 Scott X. Chang | 2008 | 生态学报2008,28,9: | 101 |
| 2 | Mo SILTCIDE SYNTHISIS BY DUAL ION BEAM DEPOSITION显示文摘Mo suicides Mo5 Si3 with high quality were prepared using ion beam deposition equipment with two Filter Metal Vacuum Arc Deposition (FMEVAD). When the number of alternant deposition times was 198, total thickness of the coating is 40nm. The coatings with droplet free can be readily obtained, so the surface is smooth. TEM observation shows that Mo and Si alternant deposition coating is compact structure. The fine Mo suicide grains densely distributed in the coating. The coating adherence on silicon is excellent. | T.H. Zhang, Z.Z. Yi, X. Y. Wu, S.J. Zhang, Y. G. Wu, X. Zhang, H.X. Zhang, A.D. Liu and X.J. Zhang Key Laboratory for Radiation Beam Technology and Material Modification, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing Radiatio | 2002 | Acta Metallurgica Sinica(English Letters)2002,15,2: | 74 |
| 3 | Mesenchymal stem cells over-expressing hepatocyte growth factor improve small-for-size liver grafts regeneration显示文摘 | Yu, Y. Yao, A. H. Chen, N. Pu, L. Y. Fan, Y. Lv, L. Sun, B. C. Li, G. Q. Wang, X. H. | 2007 | 南京医科大学学报(自然科学版)2007,27,10: | 45 |
| 4 | Epidural Analgesia in the Latent Phase of Labor and the Risk of Cesarean Delivery A Five-year Randomized Controlled Trial显示文摘 | Wang, F. Z. Shen, X. F. Guo, X. R. Peng, Y. Z. Gu, X.Q. | 2009 | 南京医科大学学报(自然科学版)2009,29,11: | 41 |
| 5 | CO_2浓度变化和气候变化对中国陆地生态系统净初级生产及其平衡的影响(英文)显示文摘本文应用陆地生态系统模型(TEM,4.0)对中国陆地生态系统在目前气候下的净初级生产力,以及在CO2浓度增加和气候变化后的净初级生产力的变化进行了预测。气候变化模型采用三种大气环流模型生成,即:GISS、GFDL和OSU模型。在当前气候条件和CO2浓度(312.5×10-6)下,TEM模型预测中国陆地生态净初级生产力为3,653TgC·a-1(1012gC·a-1)。温带常绿阔叶林是生产力最高的生物区,占有中国净初级生产力的最大比例。NPP的空间格局主要与降水量和温度的空间分布相关联。中国陆地生态系统的年净初级生产力对CO2浓度和气候的变化敏感。在陆地区域尺度上,其年净初级生产力仅在CO2浓度上升至519×10-6的情况下可增加6.0%(219TgC·a-1)。在气候变化而无CO2浓度变化的条件下,净初级生产力的响应在GISS气候方案下表现为1.5%(54.8TgC·a-1)的降低,在GFDL-q气候方案下表现为8.4%(306.9TgC·a-1)的增加。在气候和CO2浓度均发生变化的情况下,净初级生产力有较大程度的增加,在GISS气候方案下的增加比例为18.7%(683TgC·a-1),在GFDL-q气候? | Xiao 1,2 , X., J.M.Melillo 1, D.W.Kicklighter 1, Y.Pan 1, A.D.McGuire 3 and J.Helfrich 1 ( 1The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA) ( 2 The Joint Program on the Science and Policy of Globa | 1998 | 植物生态学报1998,22,2: | 35 |
| 6 | Identification of differentially expressed genes in omental adipose tissues of obese patients by suppression subtractive hybridization显示文摘 | Qiu, J. Ni, Y. H. Gong, H. X. Fei, L. Pan, X. Q. Guo, M. Chen, R. H. Guo, X. R. | 2007 | 南京医科大学学报(自然科学版)2007,27,4: | 34 |
| 7 | Intracellular tat of human immunodeficiency virus type 1 activates lytic cycle replication of Kaposi's sarcoma-associated herpesvirus. Role of JAK/STAT signaling显示文摘 | Zeng, Y. Zhang, X. H. Huang, Z. Cheng, L. Yao, S. H. Qin, D. Chen, X. Y. Tang, Q. Lv, Z. G. Zhang, L. Lu, C. | 2007 | 南京医科大学学报(自然科学版)2007,27,5: | 31 |
| 8 | EGF 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 |
| 9 | Fast-moving target tracking based on mean shift and frame-difference methods显示文摘The mean shift tracker has difficulty in tracking fast moving targets and suffers from tracking error accumulation problem.To overcome the limitations of the mean shift method,a new approach is proposed by integrating the mean shift algorithm and frame-difference methods.The rough position of the moving target is first located by the direct frame-difference algorithm and three-frame-difference algorithm for the immobile camera scenes and mobile camera scenes,respectively.Then,the mean shift algorithm is used to achieve precise tracking of the target.Several tracking experiments show that the proposed method can effectively track first moving targets and overcome the tracking error accumulation problem. | Hongpeng Yin Yi Chai Simon X. Yang Xiaoyan Yang | 2011 | Journal of Systems Engineering and Electronics2011,22,4: | 31 |
| 10 | 电厂煤燃烧后元素硒的分布及对环境的贡献显示文摘对电厂煤、除尘器飞灰、渣及不同粒径的烟道飞灰中痕量元素硒进行研究 .化学分析表明 ,硒在渣和除尘器飞灰中亏损而在细飞灰中富集 ,尤其在 >19 0 μm的飞灰中明显富集 ,富集系数达到 5 . 15 ,造成这种现象的原因一是挥发性元素的挥发 凝结作用 ,二是燃烧产物在燃烧气流中停留的时间 ,三与飞灰颗粒形态有关 ,>19 0 μm的飞灰中多孔颗粒可能是造成其富集的原因 .逐级化学提取实验表明 ,煤中硒主要具有机相关性 (6 9 7% ) ,这也是硒挥发性高的一个主要原因 ;物质平衡计算显示煤中 16 . 5 %的硒随气流直接排放入大气 ,细飞灰中的硒只占 1 1% ,且大部分在 >19 0 μm的飞灰中 ,影响范围小 ,渣中硒对周围环境的影响更小 ,飞灰中的硒具有一定的迁移性 ,也许可以用来改善缺硒土壤 . | 徐文东 曾荣树 叶大年 X. Querol | 2005 | 环境科学2005,26,2: | 30 |
| 11 | Blockade of cholecystokinin-2 receptor and cyclooxygenase-2 synergistically induces cell apoptosis, and inhibits the proliferation of human gastric cancer cells in vitro显示文摘Gastrin and cyclooxygenase-2(COX-2) playimportant roles in the carcinogenesis and progression ofgastric cancer.However,it remains unknown whether the combination of cholecystokinin-2(CCK-2) receptor antagonist plus COX-2 inhibitor exerts synergistic anti-tumor effects on human gastric cancer.Here,we demonstrated that the combination of AG-041R(a CCK-2 receptor antagonist) plus NS-398(a selective COX-2 inhibitor) treatment had synergistic effects on proliferation inhibition,apoptosis induction,down-regulation of Bcl-2 and up-regulation of Bax expression in MKN-45 cells.These results indicate that simultaneous targeting of CCK-2 receptor and COX-2 may inhibit gastric cancer development more effectively than targeting either molecule alone.(C)2008 Elsevier Ireland Ltd.All rights reserved. | Sun, W. H. | 2008 | 南京医科大学学报(自然科学版)2008,28,9: | 30 |
| 12 | Common Genetic Variants in Pre-MicroRNAs Were Associated With Increased Risk of Breast Cancer in Chinese Women显示文摘 | Hu, Z. B. Liang, J. Wang, Z. W. Tian, T. Zhou, X. Y. Chen, J. P. Miao, R. F. Wang, Y. Wang, X. R. Shen, H. B. | 2009 | 南京医科大学学报(自然科学版)2009,29,4: | 29 |
| 13 | Fe-Mo-B-CSINTERED STE ELS PRODUCED BY ADDITI ON OF MASTER ALLOY POWDERS显示文摘Addition of Fe B C and Fe Mo B C m aster alloy pow ders to Fe Mo B Csintered steels can ac tivate the sintering process by liquid phase sintering . The for m ation of liquid ( α- Fe + ( Fe , Mo) 2 B+ Fe3( B, C) → L) i m proves m echanical properties of the steels , and ultim ate tensilestrengths of 684 774 M Pa , i m pact energy of 47 ±7 Jand elongation of 2 5 ±0 9 were ob tained . Optim u m a mount of liquid phase exists , and alarge a mount of liquid phase will re sult in the form ation of continuous netw ork of liquid phase that is detrim ental to strength andelongation . | Z. M. Xiu1) , L. X. Ding2) , Z. J. Zhao3) , J. You3) , Z. Zhang3) , F. M. He1)and X. D. Sun1)1) School of Materials and Metallurgy , Northeastern University , Shenyang 110006 , China2) Department of Materials , School of Mechan | 1999 | Acta Metallurgica Sinica(English Letters)1999,12,5: | 25 |
| 14 | Schistosoma japonicum egg antigens stimulate CD4(+) CD25(+) T cells and modulate airway inflammation in a murine model of asthma显示文摘 | Yang, J. H. Zhao, J. Q. Yang, Y. F. Zhang, L. Yang, X. Zhu, X. Ji, M. J. Sun, N. X. Su,C. | 2007 | 南京医科大学学报(自然科学版)2007,27,4: | 25 |
| 15 | A comprehensive survey of augmented reality assembly research显示文摘 | X. Wang S. K. Ong A. Y. C. Nee | 2016 | Advances in Manufacturing2016,4,1: | 23 |
| 16 | Aquaporin-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 |
| 17 | EFFECT OF CHEMICAL COMPOSITION ON RETAINED AUSTENITE IN TRIP STEEL显示文摘The systematic chemical compositions including common C, Si, Mn, Al, and micro- alloying elements of Ti and Nb were designed for high volume fraction of retained austenite as much as possible. The thermo-cycle experiments were conducted by using Gleeble 2000 thermo-dynamic test machine for finding the appropriate composition. The experimental results showed that chemical composition had a significant effect on retained austenite, and the appropriate compositions were determined for commercial production of TRIP steels. | Y. Chen and X. ChenWuhan University of Science and Technology, Wuhan 430081, ChinaQ.F. Wang, G.L. Yuan and. C. Y. LiTechnical Center of Wuhan Iron and Steel Co., Wuhan 430080, ChinaX. Y. Li and Y.X. WangCentral Iron and Steel Research Institute, Beijing 1 | 2002 | Acta Metallurgica Sinica(English Letters)2002,15,4: | 19 |
| 18 | Renewable Energies, Present & Future显示文摘Fossil fuels are major cause of environmental destruction in pollutions. It has created much needed momentum for renewable energies, which are environmentally benign, generated locally, and can play a significant role in developing economy. As a sustainable energy sources, it can grow at a rapid pace to meet increasing demands for electricity in a cost-effective way. | X. S. Cai | 2005 | 电工电能新技术2005,24,1: | 18 |
| 19 | 抑郁症:应用MR动脉自旋标记法检测局部脑灌注变化显示文摘目的应用动脉自旋标记法(ASL)检测难治性抑郁症(RDD)、非难治性抑郁症(NDD)的局部脑灌注变化,并与健康对照组比较。方法本研究得到了当地伦理委员会批准,所有参加本研究的病人及志愿者均签署知情同意书。24例RDD、37例NDD以及42例健康对照者参加了本研究。从2006年2月-2007年7月.所有参与者均应用3TMR成像系统进行检查。对ASL和回波平面成像进行减影和平均以获得灌注加权像。采用基于体素的方法进行分析。感兴趣区放置在双侧海马、丘脑及豆状核。 | S. Lui L.M. Parkes X. Huang K. Zou R.C. Chore H. Yang 夏爽(译) 祁吉(校) | 2009 | 国际医学放射学杂志2009,32,4: | 18 |
| 20 | Interactions of IL-12A and IL-12B Polymorphisms on the Risk of Cervical Cancer in Chinese Women显示文摘 | Chen, X. J. Han, S. P. Wang, S. N. Zhou, X. Y. Zhang, M. F. Dong, J. Shi, X. Y. Qian, N. F. Wang, X. R. Wei, Q. Y. Shen, H. B. Hu, Z.B. | 2009 | 南京医科大学学报(自然科学版)2009,29,3: | 16 |