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73篇 您的检索式:作者名="Zhenfeng Yang"
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1Analyses on the tectonic thermal evolution and influence factors in the deep-water Qiongdongnan Basin显示文摘To reveal the tectonic thermal evolution and influence factors on the present heat flow distribution, based on 154 heat flow data, the present heat flow distribution features of the main tectonic units are first analyzed in detail, then the tectonic thermal evolution histories of 20 profiles are reestablished crossing the main deep-water sags with a structural, thermal and sedimentary coupled numerical model. On the basis of the present geothermal features, the Qiongdongnan Basin could be divided into three regions: the northern shelf and upper slope region with a heat flow of 50–70 m W/m2, most of the central depression zone of 70–85 m W/m2, and a NE trending high heat flow zone of 85–105 m W/m2 lying in the eastern basin. Numerical modeling shows that during the syn-rift phase, the heat flow increases generally with time, and is higher in basement high area than in its adjacent sags. At the end of the syn-rift phase, the heat flow in the deepwater sags was in a range of 60–85 m W/m2, while in the basement high area, it was in a range of 75–100 m W/m2. During the post-rift phase, the heat flow decreased gradually, and tended to be more uniform in the basement highs and sags. However, an extensive magmatism, which equivalently happened at around 5 Ma, has greatly increased the heat flow values, and the relict heat still contributes about 10–25 m W/m2 to the present surface heat flow in the central depression zone and the southern uplift zone. Further analyses suggested that the present high heat flow in the deep-water Qiongdongnan Basin is a combined result of the thermal anomaly in the upper mantle, highly thinning of the lithosphere, and the recent extensive magmatism. Other secondary factors might have affected the heat flow distribution features in some local regions. These factors include basement and seafloor topography, sediment heat generation, thermal blanketing, local magmatic injecting and hydrothermal activities related to faulting and overpressure.WANG Zhenfeng SHI Xiaobin YANG Jun HUANG Baojia SUN Zhen WANG Yahui JIANG Haiyan YU Chuanhai YANG Xiaoqiu 2014Acta Oceanologica Sinica2014,33,12:22
2Effects of litter quality and climate change along an elevational gradient on litter decomposition of subalpine forests, Eastern Tibetan Plateau, China显示文摘Temperature and freeze-thaw events are two key factors controlling litter decomposition in cold biomes.Predicted global warming and changes in freeze-thaw cycles therefore may directly or indirectly impact litter decomposition in those ecosystems. Here, we conducted a2-year-long litter decomposition experiment along an elevational gradient from 3000 to 3600 m to determine the potential effects of litter quality, climate warming and freeze-thaw on the mass losses of three litter types [dragon spruce(Picea asperata Mast.), red birch(Betula albosinensis Burk.), and minjiang fir(Abies faxoniana Rehd. et Wild)]. Marked differences in mass loss were observed among the litter types and sampling dates. Decay constant(k) values of red birch were significantly higher than those of the needle litters. However, mass losses between elevations did not differ significantly for any litter type.During the winter, lost mass contributed 18.3–28.8 % of the net loss rates of the first year. Statistical analysis showed that the relationships between mass loss and litter chemistry or their ratios varied with decomposition periods. Our results indicated that short-term field incubations could overestimate the k value of litter decomposition.Considerable mass was lost from subalpine forest litters during the wintertime. Potential future warming may not affect the litter decomposition in the subalpine forest ecosystems of eastern Tibetan Plateau.Zhenfeng Xu Jianxiao Zhu Fuzhong Wu Yang Liu Bo Tan Wanqin Yang 2016Journal of Forestry Research2016,27,3:6
3Acetyl salicylic acid attenuates cardiac hypertrophy through Wnt signaling显示文摘室的肥大是心血管的疾病的事件的一个强大、独立的预言者。低剂量的乙酰水杨酸酸(阿司匹林) 的脉管的性质通过血小板 cyclooxygenase 的不可逆的抑制提供心血管的好处 1;然而,可能的 anti-hypertrophic 性质和阿司匹林的潜在的机制没详细被调查。在这研究,健康野类型的雄的老鼠随机被划分成三个组并且使遭到了到横向的大动脉的收缩(TAC ) 或假冒的操作。操作 TAC 的老鼠与低剂量的阿司匹林的人的等价物被对待(10 mg 吗?Samuel Chege Gitau Xuelian Li Dandan Zhao Zhenfeng Guo Haihai Liang Ming Qian Lifang Lv Tianshi Li Bozhi Xu Zhiguo Wang Yong Zhang Chaoqian Xu Yanjie Lu Zhiming Du Hongli Shan Baofeng Yang 2015Frontiers of Medicine2015,9,4:6
4Changes in progenitors and differentiated epithelial cells of neonatal piglets显示文摘This study aimed to assess the changes of small intestinal morphology,progenitors,differentiated epithelial cells,and potential mechanisms in neonatal piglets.Hematoxylin and eosin staining of samples from 36 piglets suggested that dramatic changes were observed in the jejunum crypts depth and crypt fission index of neonatal piglets(P<0.001).The number of intestinal stem cells(ISC)tended to increase(P<0.10),and a decreased number of enteroendocrine cells appeared in the jejunal crypt on d 7(P<0.05).Furthermore,the mRNA expression of jejunal chromogranin A(ChgA)was down-regulated in d 7 piglets(P<0.05).There was an up-regulation of the adult ISC marker gene of SPARC related modular calcium binding 2(Smoc2),and Wnt/b-catenin target genes on d 7(P<0.05).These results were further verified in vitro enteroid culture experiments.A mass of hollow spheroids was cultured from the fetal intestine of 0-d-old piglets(P<0.001),whereas substantial organoids with budding and branching structures were cultured from the intestine of 7-d-old piglets(P<0.001).The difference was reflected by the organoid budding efficiency,crypt domains per organoid,and the surface area of the organoid.Furthermore,spheroids on d 0 had more Ki67-positive cells and enteroendocrine cells(P<0.05)and showed a decreasing trend in the ISC and goblet cells(P<0.10).Moreover,the mRNA expression of spheroids differed markedly from that of organoids,with low expression of intestinal differentiation gene(Lysozyme;P<0.05),epithelial-specific markers(Villin,E-cadherin;P<0.05),and adult ISC markers(leucine-rich repeat-containing G protein-coupled receptor 5[Lgr5],Smoc2;P<0.001),and upregulation of fetal marker(connexin 43[Cnx43];P<0.05).The mRNA expression of relevant genes was up-regulated,and involved in Wnt/b-catenin,epidermal growth factor(EGF),Notch,and bone morphogenetic protein(BMP)signaling on d 7 organoids(P<0.05).Spheroids displayed low differentiated phenotype and high proliferation,while organoids exhibited strong differentiation potential.These results indicated that the conversion from the fetal progenitors(spheroids)to adult ISC(normal organoids)might largely be responsible for the fast development of intestinal epithelial cells in neonatal piglets.Lanmei Yin Jun Li Yitong Zhang Qing Yang Cuiyan Yang Zhenfeng Yi Yuebang Yin Qiye Wang Jianzhong Li Nengshui Ding Zhigang Zhang Huansheng Yang Yulong Yin 2022Animal Nutrition2022,,1:3
5Subtyping of type A influenza by sequencing the variable regions of HA gene specifically amplified with RT-PCR显示文摘The outbreak of a novel influenza A(H1N1) virus across the globe poses a threat to human health.It is of paramount importance to develop a rapid,reliable and inexpensive diagnostic procedure.Based on the bioinformatic information from public database,primers specific for influenza A virus surface protein haemagglutinin(HA) of several subtypes(including H1,H2,H3,H5,H7 and H9) were designed.Primer-specific PCR products were subjected to sequencing for accurately distinguishing H1 and H3 subtypes from others.This sequencing-based detection method will not only be applied to rapid detection and simultaneous subtype identification of new influenza A virus H1N1,but also provide the strategies to monitor other new types ofinfluenza virus with explosive potential.YAN An DING GuoHui ZHOU ZhenFeng DONG Hui ZHANG YaKun ZHU Lei HE YunGang ZHANG GuoQing LI YiXue SUN Bing HUANG Zhong LAN Ke JIN Li WANG HongYan WANG XiaoNing YANG Zhong ZHONG Yang DAI JianXin GUO YaJun WANG Hao CHE XiaoYan WU Fan YUAN ZhenGan ZHANG Xi CAO ZhiWei ZHOU XiaoNong ZHOU JiaHai MA ZhiYong TONG GuangZhi ZHAO GuoPing JIN WeiRong XIONG Hui 2009Chinese Science Bulletin2009,54,13:3
6Effect of methyl jasmonate on the inhibition of Colletotrichum acutatum infection in loquat fruit and the possible mechanisms显示文摘Shifeng Cao Yonghua Zheng Zhenfeng Yang Shuangshuang Tang Peng Jin Kaituo Wang Xiaomei Wang 2008Postharvest Biology and Technology2008,,2:3
7The development of real time data driving multi-axis linkage and synergic movement control system of 3D variable cross-section roll forming machine显示文摘The three dimensional variable cross-section roll forming is a kind of new metal forming technology which combines large forming force,multi-axis linkage movement and space synergic movement,and the sequential synergic movement of the ganged roller group is used to complete the metal sheet forming according to the shape of the complicated and variable forming part data.The control system should meet the demands of quick response to the test requirements of the product part.A new kind of real time data driving multi-axis linkage and synergic movement control strategy of 3D roll forming is put forward in the paper.In the new control strategy,the forming data are automatically generated according to the shape of the parts,and the multi-axis linkage movement together with cooperative motion among the six stands of the 3D roll forming machine is driven by the real-time information,and the control nodes are also driven by the forming data.The new control strategy is applied to a 48axis 3D roll forming machine developed by our research center,and the control servo period is less than 10ms.A forming experiment of variable cross section part is carried out,and the forming precision is better than±0.5mm by the control strategy.The result of the experiment proves that the control strategy has significant potentiality for the development of 3D roll forming production line with large scale,multi-axis ganged and synergic movement.管延智 Li Qiang Wang Haibo Yang Zhenfeng Zheng Yuting 2013High Technology Letters2013,19,3:2
8Electroacupuncture enhances hippocampal NSCs proliferation in cerebral ischemia-reperfusion injured rats via activation of notch signaling pathway显示文摘Jing Tao Bin Chen Yanling Gao Shanli Yang Jia Huang Xin Jiang Yayin Wu Jun Peng Zhenfeng Hong Lidian Chen 2014International Journal of Neuroscience2014,,3:2
9Thermodynamics of voltage-gated ion channels显示文摘Ion channels are essential for cellular signaling.Voltage-gated ion channels (VGICs)are the largest and most extensively studied superfamily of ion channels.They possess modular structural features such as voltage-sensing domains that encircle and form mechanical connections with the pore-forming domains.Such features are intimately related to their function in sensing and responding to changes in the membrane potential.In the present work,we discuss the thermodynamic mechanisms of the VGIC superfamily,including the two-state gating mechanism,sliding-rocking mechanism of the voltage sensor,subunit cooperation,lipid-infiltration mechanism of inactivation,and the relationship with their structural features.Xuejun C.Zhang Hanting Yang Zhenfeng Liu Fei Sun 2018Biophysics Reports2018,4,6:2
10Enhanced nitrogen removal and microbial analysis in partially saturated constructed wetland for treating anaerobically digested swine waste water显示文摘Nitrogen removal of wastewater containing high-strength ammonium by the constructed wetlands (CWs) has been paid much attention. In this study, the ability of a partially saturated CW to treat anaerobically-digested decentralized swine wastewater under varying operating parameters from summer to winter was investigated. The partially saturated CW achieved better NH4^+-N and TN removal by tidal flow than intermittent flow. With surface loading rates of 0.108, 0.027, and 0.029 kg/(m^2·d) for COD, NH4^+-N, and TN, the partially saturated CW by tidal operation achieved corresponding removal efficiencies of 85.94%, 61.20%, and 57.41%, respectively, even at 10℃. When the rapid-adsorption of NH4^+-N and the bioregeneration of zeolites reached dynamically stable, the simultaneous nitrification and denitrification in the aerobic zeolite layer was observed and accounted for 58.82% of the total denitrification of CW. The results of Illumina high-throughput sequencing also indicated that nitnfiers (Nitrospira and Rhizomicrobiurri) and denitrifiers (Rhodanobacter and Thauera) simultaneously existed in the zeolite layer. The dominant existence of versatile organic degraders and nitrifiers/denitrifiers in the zeolite layer was related to the removal of most COD and nitrogen in this zone. The contribution of the possible nitrogen removal pathways in the CW was as follows: nitrification-denitrification (86.55%)>substrate adsorption (11.70%)>plant uptake (1.15%)>microbial assimilation (0.60%).Zhenfeng Han Ying Miao Jing Dong Zhiqiang Shen Yuexi Zhou Shan Liu Chunping Yang 2019Frontiers of Environmental Science & Engineering2019,13,4:2
11Effect of methyl jasmonate on the inhibition of Colletotrichum acutatum infection in loquat fruit and the possible mechanisms显示文摘CAO Shifeng ZHENG ~onghua YANG Zhenfeng 2008Postharvest Biology and Technology2008,49,2:1
12Effect of high oxygen atmosphere storage on quality,antioxidant enzymes,and DPPH-radical scavenging activity of Chinese bayberry fruit显示文摘YANG Zhenfeng ZHENG Yonghua CAO Shifeng 0,,01:1
13An optimization approach for coupling problem of berth allocation and quay crane assignment in container terminal 显示文摘Yang Chunxia Wang Xiaojun Li Zhenfeng 2012Computers & Industrial Engineering2012,,63:1
14Effects of methyl jasmonate treatment on quality and decay in cold-stored loquat fruit显示文摘CAO Shifeng WANG Xiaoqiang YANG Zhenfeng 2007Acta Hort2007,750,:1
15Acoustic Velocity-Independent 2-D DOA Estimation for Underwater Application显示文摘In this paper,an acoustic velocityindependent two-dimensional direction of arrival(2-D DOA)estimation for underwater application is presented to eliminate the effect of the inaccurate acoustic velocity estimation.According to the geometric relationship between the linear arrays,the proposed method employs the cross correlation matrix(CCM)of the data received by three crossed linear arrays to remove the acoustic velocity factor.The simulation results demonstrate that the proposed method is not susceptible to the acoustic velocity.For a single source,the proposed method outperforms the conventional method in all conditions.For multiple sources,there is a little performance degradation for the proposed method compared with the conventional method.However,the proposed method displays a better performance than the conventional method in situations where the signal to noise ratio(SNR)is extremely low or the acoustic velocity estimation error is non-negligible.Furthermore,the computational complexity of the proposed method is lower than that of the conventional method using the same amount of sensors in total,while the performance is still acceptable.Gengxin Ning Zhenfeng Liao Xiaopeng Li Cui Yang 2022Journal of Communications and Information Networks2022,7,4:1
16Effects of storage temperature on textural properties of Chinese bayberry fruit显示文摘Zhenfeng Yang Yonghua Zheng Shifeng Cao 2007Journal of Texture Studies2007,38,:1
17An Op- timization Approach for Coupling Problem of Berth Allo- cation and Quay Crane Assignment in Container Terminal 显示文摘YANG Chunxia WANG Xiaojun LI Zhenfeng 2012Computers & Industrial Engineering2012,63,:1
18Effects of storage temperature on textural properties of Chinese bayberry fruit显示文摘YANG Zhenfeng ZHANG Yonggua CAO Shifeng 2007Journal of Texture Studies2007,38,1:1
19Effect of methyl jasmonate on the inhibition of Colletotrichum acutatum infection in loquat fruit and the possible mechanisms显示文摘Shifeng Cao Yonghua Zheng Zhenfeng Yang Shuangshuang Tang Peng Jin Kaituo Wang Xiaomei Wang 2008Postharvest Biology and Technology2008,,2:1
20Effect of 1-methylcyclopene on senescence and quality maintenance of green bell pepper fruit during storage at 20<ce:hsp sp='0.25'/>°C显示文摘Shifeng Cao Zhenfeng Yang Yonghua Zheng 2012Postharvest Biology and Technology2012,,:1
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