|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Suspended sediment load in the turbidity maximum zone at the Yangtze River Estuary: The trends and causes显示文摘在河口,人的活动的影响和河口规定基于推迟的沉积元素的分析混浊最大值地区上的工程根据在 1959 和 2011 之间的测量数据被学习。当在流量的沉积体积和集中的锋利的减少在河口导致了混浊最大值地区的锋利的减少时,人的活动在朝海的方向水上有小效果,这被发现当在流量的沉积体积和集中的锋利的减少在河口导致了混浊最大值地区的锋利的减少时。集中在外面,海和 Hangzhou 海湾没变化,并且那也有点沿着 Subei 海岸减少,它没在混浊最大值地区上有影响。与在 1959 和 1999 之间的集中相比,在河口在上游的移动的集中的山峰,和在 20002009 的集中沿着河与一个更狭窄的变化范围在大约 24.73% 减少了到海。在诺思经过的推迟的沉积集中是低的在因为朝海的方向沉积的减少在上游、下游、床材料变粗,当它由于沉积的影响在中间相对高时,穿过北方突堤。 | YANG Yunping LI Yitian SUN Zhaohua FAN Yongyang | 2014 | Journal of Geographical Sciences2014，24，1： | 25 |
| 2 | High resolution temperature measurement technique for measuring marine heat flow显示文摘High resolution temperature measurement technique is one of the key techniques for measuring marine heat flow. Basing on Pt1000 platinum resistance which has the characteristics of high accuracy and good stability, we designed a bridge reversal excitation circuit for high resolution temperature measurement. And the deep ocean floor in-situ test results show that: (1) temperature deviation and peak-to-peak resolution of the first version circuit board (V1) are 1.960-1.990 mK and 0.980-0.995 m Kat 1.2-2.7°C, respectively; and temperature deviation and peak-to-peak resolution of the second circuit board (V2) are 2.260mK and 1.130 mK at 1.2-1.3°C, respectively; (2) During the 2012NSFC-IndOcean cruise, seafloor geothermal gradient at Ind2012HF03,-07 and-12 stations (water depth ranges from 3841 to 4541 m) were successfully measured, the values are 59.1,75.1 and 71.6°C/km, respectively. And the measurement errors of geothermal gradient at these three stations are less than 3.0% in terms of the peak-to-peak resolution. These indicate that the high resolution temperature measurement technique based on Pt1000 platinum resistance in this paper can be applied to marine heat flow measurement to obtain high precision geothermal parameters. | QIN YangYang YANG XiaoQiu WU BaoZhen SUN ZhaoHua SHI XiaoBin | 2013 | Science China(Technological Sciences)2013，56，7： | 9 |
| 3 | The mechanism of barrier river reaches in the middle and lower Yangtze River显示文摘在它人工地或自然地被扰乱以后,冲积隧道总是以沉积运输的平衡国家调整了自己。怎么维持沉积运输的平衡国家并且使河政体稳定总是是河的 geomorphologists 的担心。在长江的中间、更低的活动范围的隧道被区分的河和单个线的河的蹒跚的分发描绘。河政体的变化比在单个线的河里在区分的河里猛烈地是更多。区分的河里的河政体的调整是否能通过单个线的河并且宣传到下游的活动范围,影响全面的河政体的稳定性。研究证明障碍河活动范围能阻止宣传到下游的活动范围接近在上游的隧道调整;因此,它在稳定河政体起一个关键作用。这研究在长江的中间、更低的活动范围调查 34 个单个线的河活动范围。根据长江的中间、更低的活动范围的河的进程的系统的摘要,障碍河活动范围的控制因素被总结并且提取:平面形态学单个线、蜿蜒地流;没有流动偏斜,节点在河活动范围的上面或中间的部分散布了;水力的几何系数是不到 4;纵的坡度比 12 大,凹面河岸的泥土内容比 9.5% 大,并且床沉积的中部的直径比 0.158 公里大。从海军司烧方程,流动的弯曲半径的计算公式动态轴被推出,然后这些的角色在限制流动的迁居上控制因素动态轴和障碍河活动范围的形成被分析。当时,障碍河活动范围被看作这到隧道边界的限制力量的动态轴是的流动的迁居力量的比率不到 1 在不同流动层次下面。障碍河活动范围的机制是以便甚至当在上游的河政体调整时,这个活动范围的隧道边界能总是抑制流动的移植振幅动态轴并且在不同的在上游的河政体条件下面集中主要的流线的平面位置,提供相对稳定的到来的流动为下游的活动范围调节,从而阻止宣传到下游的活动范围接近在上游的河政体调整。 | YOU Xingying TANG Jinwu ZHANG Xiaofeng HOU Weiguo YANG Yunping SUN Zhaohua WENG Zhaohui | 2017 | Journal of Geographical Sciences2017，27，10： | 9 |
| 4 | An improved form of smoothed particle hydrodynamics method for crack propagation simulation applied in rock mechanics显示文摘The simulation of crack propagation processes in rock engineering has been not only a research hot spot among scholars but also a challenge.Based on this background,a new numerical method named improved kernel of smoothed particle hydrodynamics(IKSPH)has been put forward.By improving the kernel function in the traditional smoothed particle hydrodynamics(SPH)method,the brittle fracture characteristics of the base particles are realized.The particle domain searching method(PDSM)has also been put forward to generate the arbitrary complex fissure networks.Three numerical examples are analyzed to validate the efficiency of IKSPH and PDSM,which can correctly reveal the morphology of wing crack and the laws of crack coalescence compared with previous experimental and numerical studies.Finally,a rock slope model with complex joints is numerically simulated and the progressive failure processes are exhibited,which indicates that the IKSPH method can be well applied to rock mechanics engineering.The research results showed that IKSPH method reduces the programming difficulties and avoids the traditional grid distortion,which can provide some references for the application of IKSPH to rock mechanics engineering and the understanding of rock fracture mechanisms. | Shuyang Yu Xuhua Ren Jixun Zhang Haijun Wang Zhaohua Sun | 2021 | International Journal of Mining Science and Technology2021，31，3： | 6 |
| 5 | Cloning and expression analysis of the FvNCED3 gene and its promoter from ash(Fraxinus velutina)显示文摘The 9-cis-epoxycarotenoid dioxygenase(NCED)gene is rate-limiting in abscisic acid(ABA) biosynthesis.In this study, an NCED gene, designated FvNCED3(KY008746), was cloned from velvet ash(Fraxinus velutina Torr.) with a RACE method. The full length c DNA of FvNCED3 encodes a 573-amino acid polypeptide.Sequencing analysis showed that the FvNCED3 protein was highly homologous to other NCED proteins. The expression patterns of FvNCED3 in different ash organs were analyzed by real-time PCR which revealed that FvNCED3 expression levels were highest in leaves and lowest in roots. The gene expression patterns of FvNCED3 under abiotic stress indicated that its expression increased under drought, salt and ABA stress and decreased due to high and low temperatures. There were no obvious changes under ultraviolet light. The 1094-bp upstream sequence 5' flank regulation region of the FvNCED3 gene was also cloned from ash using the Genome Walking method. To assess the activity of the FvNCED3 promoter, a p FvNCED3 p::GUS plant expression vector was constructed for tobacco transformation. GUS expression of the FvNCED3 GUS enzyme activity was detected in almost all transgenic tobacco tissues, especially in the young leaves,stigma, anther, ovule and ovary. After treating the transgenic tobacco with NaCl and placing it under drought stress, GUS staining of tobacco leaves increased compared with that under normal growth conditions. This result indicates that gene expression driven by the FvNCED3 promoter can be induced by salt and drought stress. | Tian Li Jingkuan Sun Chuanrong Li Zhaohua Lu Jiangbao Xia | 2019 | Journal of Forestry Research2019，30，2： | 6 |
| 6 | Effect of the Oxidation Time on Properties of Ceramic Coatings Produced on Ti-6Al-4V by Micro-Arc Oxidation显示文摘Ceramic coatings were prepared on Ti-6AI-4V alloy using ac micro-arc oxidation (MAO) in silicate-hypophosphate solution. Growth regularity and formation mechanism of ceramic coatings were discussed. It was found that during the first stage the growth rate of coatings toward the external surface was larger than that toward substrate and then the coating began to grow mainly towards Ti alloy. When the total coating thickness reaches a certain value, it would no longer increase. In addition, the variations of the composition and microstructure of ceramic coatings according to the depositing time were also investigated with X-ray diffraction (XRD) and scanning electron microscope (SEM).The amount of rutile TiO2 gradually increased, whereas the amounts of the anatase TiO2 and amorphous phases first increased and then decreased slightly. | Zhaohua JIANG, Xuetong SUN, Yanping LI, Fuping WANG and Yandong LU Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China | 2005 | Journal of Materials Science & Technology2005，21，2： | 3 |
| 7 | Sodium-rich volcanic rocks and their relationships with iron deposits in the Aqishan-Yamansu belt of Eastern Tianshan,NW China显示文摘The volcanic rocks hosting the iron deposits in the Aqishan–Yamansu metallogenic belt are sodium-rich.The geochronology,petrography,and geochemistry of minerals and sodium-rich rocks as well as the relationship between these rocks and the iron deposits are studied.Geochemically,the ore-hosting volcanic rocks are sodiumrich(the averages of Na2O and Na2O/K2O are 4.31 wt.%and 8.56,respectively)and belong to the calc-alkaline series.They are enriched in LREEs and LILEs(Ba,U,K,and Sr),but depleted in HFSEs(Nb,Ta,and Ti).SHRIMP zircon U–Pb dating of the crystal tuff in the Aqishan Formation and the dacite in the Tugutu Bulak Formation yields ages of 337.52.3 Ma(n?15,MSWD?0.85)and 313.03.3 Ma(n?13,MSWD?0.74),respectively,indicating that the sodium-rich volcanic rocks formed from the early–late Carboniferous.Electron microprobe data from plagioclases demonstrate that albites and/or oligoclases were formed in the basic–intermediate–acid volcanic rocks.Two stages of albitization are identified,and the latter is likely attributed to the dissolution of iron in the Aqishan–Yamansu belt.The sodium-rich volcanic rocks probably formed by the interaction between volcanic lava and seawater after volcanoes erupted on the seafloor;meanwhile,the albites formed by element substitution in a low-metamorphic environment.The spatiotemporal coupling relationship between sodium-rich volcanic rocks and iron deposits in the Aqishan–Yamansu belt is favorable.Iron dissolved from the dark minerals of basic–intermediate volcanic rocks through sodium metasomatism is one of the material sources for the iron deposits. | Zhiyuan Sun WangJingbin Yuwang Wang Lingli Long Zhaohua Luo Xiaohua Deng Qitao Hu Menglong Wang | 2020 | Geoscience Frontiers2020，11，2： | 2 |
| 8 | Polyethylene glycol-modified cobalt sulfide nanosheets for high-performance photothermal conversion and photoacoustic/magnetic resonance imaging显示文摘 | Zhenglin Li Zhuo Li Lei Chen Ying Hu Shaoshan Hu Zhaohua Miao Ye Sun Flemming Besenbacher Miao Yu | 2018 | Nano Research2018，11，5： | 2 |
| 9 | The role of autophagic and lysosomal pathways in ischemic brain injury显示文摘Autophagy is involved in neural cell death after cerebral ischemia. Our previous studies showed that rapamycin-induced autophagy decreased the rate of apoptosis, but the rate of apoptosis was in-creased after the autophagy inhibitor, 3-methyladenine, was used. In this study, a suture-occluded method was performed to generate a rat model of brain ischemia. Under a transmission electron microscope, autophagic bodies and autophagy lysosomes were markedly accumulated in neurons at 4 hours post brain ischemic injury, with their numbers gradually reducing over time. Western blotting demonstrated that protein levels of light chain 3-II and cathepsin B were significantly in-creased within 4 hours of ischemic injury, but these levels were not persistently upregulated over time. Confocal microscopy showed that autophagy was mainly found in neurons with positive light chain 3 signal. Injection of rapamycin via tail vein promoted the occurrence of autophagy in rat brain tissue after cerebral ischemia and elevated light chain 3 and cathepsin B expression. However, in-jection of 3-methyladenine significantly diminished light chain 3-II and cathepsin B expression. Results verified that autophagic and lysosomal activity is increased in ischemic neurons. Abnormal components in cells can be eliminated through upregulating cell autophagy or inhibiting autophagy after ischemic brain injury, resulting in a dynamic balance of substances in cells. Moreover, drugs that interfere with autophagy may be potential therapies for the treatment of brain injury. | Zhaohua Gu Yinyi Sun Kangyong Liu Fen Wang Ting Zhang Qiang Li Liwei Shen Ling Zhou Liang Dong Nan Shi Qian Zhang Wei Zhang Meizhen Zhao Xiaojiang Sun | 2013 | Neural Regeneration Research2013，8，23： | 2 |
| 10 | Exchange bias associated with phase in the perovskite cobaltite La1-xSrxCoO3显示文摘 | TANG Yankun SUN Yong CHENG Zhaohua | 2006 | Phys Rev B2006，73，73： | 1 |
| 11 | Inhibition of L-type Ca 2+ channels by curcumin requires a novel protein kinase-theta isoform in rat hippocampal neurons显示文摘 | Kangyong Liu Bo Gui Yinyi Sun Nan Shi Zhaohua Gu Ting Zhang Xiaojiang Sun | 2012 | Cell Calcium2012，，： | 1 |
| 12 | The effects of anodic and cathodic processes on the char- acteristics of ceramic coatings formed on titanium al- loy through the MAO coating technology显示文摘 | Sun Xuetong Jiang Zhaohua Yao Zhong-ping | 2005 | App Lied Surface Science2005，252，44： | 1 |
| 13 | Channel degradation downstream from the Three Gorges Project and its impacts on flood level 显示文摘 | LI Yitian SUN Zhaohua LIU Yun | 2009 | Journal of Hydraulic Engineering2009，135，： | 1 |
| 14 | Norcantharidin inhibits tumor angiogenesis via blocking VEGFR 2/ MEK / ERK signaling pathways显示文摘 | Long Zhang Qing Ji Xuan Liu Xingzhu Chen Zhaohua Chen Yanyan Qiu Jian Sun Jianfeng Cai Huirong Zhu Qi Li | 2013 | Cancer Sci2013，，5： | 1 |
| 15 | The effects of anodic and cathodic processes on the characteristics of ceramic coatings formed on titanium alloy through the MAO coating technology显示文摘 | Xuetong Sun Zhaohua Jiang Zhongping Yao | 2005 | Applied Surface Science2005，，252： | 1 |
| 16 | Influ- ence of the frequency on the structure and corrosion re- sistance of ceramic coatings on Ti-6A1-4V alloy pro- duced by micro-plasma oxidation 显示文摘 | Yao Zhongping Jiang Zhaohua Sun Xuetong | 2005 | Materials Chemistry and Physics2005，92，： | 1 |
| 17 | Land-use Change and Ecological Footprint Analysis of Harbin City显示文摘Appraisaling the land-use change degree of urban land objectively, analyzing the reasons, and proposing the countermeasures have important meanings to promote land sustainable development. The article analyzed the dynamic change of land-use ecological footprint in Harbin City from 1996 to 2006. Through the measurement of ecological footprint to assess the social impact and the extent of sustainable land-use. The results showed that the per capita ecological footprint in Harbin had increased year by year, while the per capita ecological carrying capacity had decreased, the per capita ecological deficit was increasing, and land-use in Harbin City was in an overload status. Finally, reasonable land-use proposals were proposed. | SUN Lina YUAN Zhaohua SONG Ge | 2010 | Journal of Northeast Agricultural University(English Edition)2010，17，1： | 1 |
| 18 | Influences of current density on structure and corrosion resistance of ceramic coatings on Ti-6Al-4V alloy by micro-plasma oxidation显示文摘 | Yao Zhongping Jiang Zhaohua Sun Xuetong | 2004 | Thin Solid Films2004，468，： | 1 |
| 19 | Influences of current density on structure and Corrosion resistance of ceramic coatings on Ti-6Al-4V alloy by micro-plasma oxidation显示文摘 | Yao Zhongping Jiang Zhaohua Sun Xuetong | | 0，，1： | 1 |
| 20 | Applied Physics Letters显示文摘 | Hu Fengxia Sun Jirong Cheng Zhaohua | 2001 | 78(23): 36752001，78，23： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员