|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Dynamic trends and driving forces of land use intensification of cultivated land in China显示文摘这研究的目的是证实代表土地的几个重要因素在栽培土地使用增强(由 CII 表示了) ,使用一条多维的途径在中国完成现实主义、实际的栽培陆地使用政策。为这个原因,理论框架首先被造解释土地的变化在栽培陆地使用增强,然后变量和索引进一步为在省的水平在栽培陆地描绘陆地使用增强的动态趋势和驱动力的目的被开发。学习结果显示 CII 的程度显著地在 1996 ~ 2008 的时期期间增加了,增加了劳动和大写的输入,并且加强了陆地使用,由于化肥,机械和杀虫剂的广泛的使用。而且,主要部件回归结果证明栽培土地,栽培土地的经济好处,劳动生产率,和土地的生产率使用变换是影响村庄发展的主要因素。开始的三个因素起一个积极作用,当最后一个在栽培陆地在陆地使用增强上有否定效果时。根据这些结果,为在栽培土地的持续增强的主要政策被建议。首先,为增强的持续小径应该被采用减少化肥的 unsustainable 使用,农业化学药品,等等。第二,为农业生产的条件应该进一步被改进增加栽培陆地生产率。第三,它为从观点改进劳动生产率和陆地使用效率很必要、有用加速了栽培陆地发行量。最后步是断然借助于改革津贴标准影响农民的生产活动。 | WANG Guogang LIU Yansui LI Yurui CHEN Yangfen | 2015 | Journal of Geographical Sciences2015，25，1： | 23 |
| 2 | Spatial distribution, seasonal variation and regionalization of PM_(2.5) concentrations in China显示文摘In order to provide scientific support to policy makers in the regulation of PM2.5 pollution in China, it is important to accurately assess the current status, spatiotemporal characteristics and regionalization data for this air pollutant. An analysis of the pollution status of PM2.5 was conducted using daily averaged mass concentration data recorded in 74 cities in 2013 and 161 cities in 2014. The rotated empirical orthogonal function(REOF) method was applied to analyze this data. Results showed that the average annual PM2.5 concentration in urban areas of China is 62.2±21.5 ?g/m3, and that the distribution is spatially heterogeneous. The North China Plain, middle and lower Yangtze River Plain, Sichuan Basin and Guanzhong Plain had relatively high annual PM2.5 concentrations compared with the southeast coastal region, the Tibetan Plateau and the Yungui Plateau. PM2.5 mass concentrations tended to be higher in winter than in summer, however, the data for many cities showed a small peak in concentrations from May to July. An analysis of the spatial correlation of PM2.5 indicated a significant influence of topographic conditions. A lower correlation was observed where terrain features varied greatly. Based on the results of the REOF analysis and topographic characteristics, ten regions were identified in mid-eastern China, which could be considered as basic pollution prevention divisions for PM2.5; these include the North China Plain region, Pearl River Delta region, Jianghuai Plain region, middle Yangtze River Plain region, Northeast Plain region, Jiangnan coastal region, Sichuan Basin region, Qiantao Plain region, Guanzhong-Central Plain region and Yungui Plateau region. Seasonal variations in the regionalization data were observed, especially for the North China Plain and Pearl River Delta regions. Among the ten regions identified in this study, the North China Plain, Guanzhong-Central Plain, middle Yangtze River Plain and Jianghuai Plain had relatively high PM2.5 mass concentrations in comparison with the others. Therefore, these regions should be considered as the key regions to target in developing PM2.5 pollution prevention strategies. This study improves the present understanding of the spatial distribution, seasonal changes and regional status of PM2.5 pollution in China and helps establish possible control strategies for the reduction of this air pollutant. | Shuai Wang Guogang Li Zhengyu Gong Li Du Qingtao Zhou Xiaoyan Meng Shuyan Xie Lei Zhou | 2015 | Science China Chemistry2015，58，9： | 12 |
| 3 | Influencing factors of water resources in the source region of the Yellow River显示文摘Taking the source region of the Yellow River as a study area and based on the data from Madoi Meteorological Station and Huangheyan Hydrological Station covering the period 1955–2005, this paper analyses the changing trends of surface water resources, climate and frozen ground and reveals their causes. Results show that there exist frequent fluctuations from high to low water flow in the 51-year period. In general, the discharge has shown a de- clining trend in the 51 years especially since the 1990s. The annual distribution shows one peak which, year on year is getting smaller. (1) Precipitation has a significant and sustained influence on discharge. (2) A sharp rise of temperature resulted in the increase of evaporation and the decrease of discharge, which has a greater effect than on ice-snow melting. (3) Frozen ground tends to be degraded markedly. There is a significant positive correlation be- tween the permafrost thickness and the discharge. (4) Evaporation rates are significantly increasing, leading to the decrease of discharge. 70% of the discharge reduction resulted from climate change, and the remaining 30% may have been caused by human activities. | CHANG Guogang LI Lin ZHU Xide WANG Zhenyu XIAO Jianshe LI Fengxia | 2007 | Journal of Geographical Sciences2007，17，2： | 7 |
| 4 | T-2 toxin induces developmental toxicity and apoptosis in zebrafish embryos显示文摘T-2 toxin is one of the most important trichothecene mycotoxins occurring in various agriculture products. The developmental toxicity of T-2 toxin and the exact mechanism of action at early life stages are not understood precisely. Zebrafish embryos were exposed to different concentrations of the toxin at 4–6 hours post fertilization(hpf) stage of development, and were observed for different developmental toxic effects at 24, 48, 72, and 144 hpf. Exposure to 0.20 μmol/L or higher concentrations of T-2 toxin significantly increased the mortality and malformation rate such as tail deformities, cardiovascular defects and behavioral changes in early developmental stages of zebrafish. T-2 toxin exposure resulted in significant increases in reactive oxygen species(ROS) production and cell apoptosis, mainly in the tail areas, as revealed by Acridine Orange staining at 24 hpf. In addition, T-2 toxin-induced severe tail deformities could be attenuated by co-exposure to reduced glutathione(GSH). T-2 toxin and GSH co-exposure induced a significant decrease of ROS production in the embryos. The overall results demonstrate that T-2 toxin is able to produce oxidative stress and induce apoptosis, which are involved in the developmental toxicity of T-2 toxin in zebrafish embryos. | Guogang Yuan Yimei Wang Xiaoyan Yuan Tingfen Zhang Jun Zhao Liuyu Huang Shuangqing Peng | 2014 | Journal of Environmental Sciences2014，26，4： | 5 |
| 5 | Effect of direct current pulse stimulating acupoints of JiaJi (T10-L3) and Ciliao (BL 32) with Han's Acupoint Nerve Stimulator on labour pain in women: a randomized controlled clinical study显示文摘OBJECTIVE: To assess the clinical effect and safety of direct current(DC) pulse produced by Han's Acupoint Nerve Stimulator in reduction(HANS) of labor pain.METHODS: Totally 120 participants were enrolled in this clinical trial, and were randomly divided into4 groups including: HANS group, patient controlled intravenous analgesia(PCIA) group, patient-controlled epidural analgesia(PCEA) group and control group. The HANS group was treated by stimulating the acupoints of Jia Ji(T10-L3) and Ciliao(BL 32)with DC pulse of 100 Hz and 15-30 m A produced by a portable battery-powered Han's Acupoint Nerve Stimulator for 30 min. The PCIA group was intravenously infused Ondansetron(8 mg) for 5 min,then tramadol injection(1.5 mg/kg) was slowly dripped by using Baxter APⅡ electronic pump with50 m L tramadol(0.70%) + ondansetron(8 mg),background infusion 2 m L/h, PCA dose of 2 m L,lockout interval of 10 min. In PCEA group, women received intrathecal injection ropivacaine(3 mg) in L2-3, and epidural catheter was connected to Baxter APⅡ electronic pump, with 100 m L Ropivacaine(0.1%) and Sufentanil(50 ug), background infusion5 m L, Patient controlled analgesia(PCA) dose of 5m L, lockout interval of 10 min. The control group was not received analgesia. The visual analogue scale(VAS), stage and manner of labor, Apgar score of newborn, neonatal weights, oxytocin dosage,postpartum hemorrhage and side effects were monitored in all groups.RESULTS: The vital signs were all stable in the four analgesic groups. After analgesia, there was statistical difference in VAS score between HANS group and control group, between PCEA group and the control group, between PCIA group and control group. The analgesic effect in the PCEA group was significantly better than that of other two groups.The second stage of labor in the PCEA group was longer than the other three groups, showing significant difference between them. The Apgar score of newborn 1min after birth in the PCIA group was slightly lower than that of the other two groups,showing significant difference between them. The neonatal weights between four groups were not significantly different. The rate of cesarean sectionin the control group was significantly higher than that of the labor analgesia group, there was statistically difference in four groups. The number of PCIA group that used oxytocin was lower than that of other three groups. There was no significant difference in postpartum hemorrhage between four groups. The side effects of the PCEA group were itching, uroschesis and neonatal asphyxia and PCIA group were nausea and vomiting and neonatal asphyxia. However, fewer side effects were observed in the HANS group.CONCLUSION: The DC pulse produced by HANS may be a non-pharmacological alternative to labor pain with fewer side effects. | Liu Ye Xu Mingjun Che Xiangming He Junqin Guo Dandan Zhao Guosheng Zhang Guogang Zhang Shuo Kang Kai Zhang Chunlei Wang Yinan Li Shan Zhang Qinglin Xu Li Zhang Ming Han Bin Jing Yumiao Zhang Ning | 2015 | Journal of Traditional Chinese Medicine2015，35，6： | 4 |
| 6 | Spatio-temporal Dynamic Patterns of Rural Area Development in Eastern Coastal China显示文摘The aim of this study is to evaluate the current state of rural area development at the county level in the eastern coastal China. An evaluation index system including 18 factors was developed, and a rural development index (RDI) was constructed to evaluate rural development state in 2000, 2004, and 2008. The quantitative evaluation indicated the following results. 1) This study derived four dominating components by means of principal component analysis, which can explain 78.2% of the total information, namely agricultural production input, the basic condition of agriculture, the comparative effectiveness of grain production, and the household′s own basic conditions. 2) Since the turn of the new millennium, the rural area in the eastern coastal China has experienced a rapid development in general. Well developed, developed, moderately developed and undeveloped rural areas respectively occupied 29.32%, 22.33%, 21.91%, and 10.51% in 2008. 3) The countryside had maintained a sound momentum of developing trend between 2000 and 2008, while the rural development in the eastern coastal China lacked sustainability. And 4) industrialization, urbanization, original economic basis, and location are four major driving forces of the disparity of rural area development in the eastern coastal China. Given these results, the strategies and policies for the improvement of each rural group were put forward. | LIU Yansui WANG Guogang ZHANG Fugang | 2013 | Chinese Geographical Science2013，23，2： | 3 |
| 7 | Antibacterial Performance of Cu-Bearing Stainless Steel against Staphylococcus aureus and Pseudomonas aeruginosa in Whole Milk显示文摘Pathogen microorganisms exist in various environments such as dairy processing facilities.They are not easily eliminated,and signi?cantly raise the risk of bacterial contamination.The inhibition ability of a novel type 304 Cu-bearing stainless steel(304CuSS)with nano-sized Cu-rich precipitates against Staphylococcus aureus(S.aureus)and Pseudomonas aeruginosa(P.aeruginosa)added whole milk was investigated in this study.The results showed that after 24 h contact,the inhibition rates of the 304CuSS against S.aureus and P.aeruginosa added whole milk reached 99.2%±0.3% and 99.3%±0.2%,respectively,in contrast with the 304SS.In the plain whole milk,the inhibition rate of the 304CuSS also reached 66.9%±2.0% compared with the 304SS.The results demonstrated that the 304CuSS killed majority of the planktonic bacteria,and inhibited sessile bacteria adherence to the steel surface in the whole milk with and without bacteria addition,signi?cantly reducing the bacterial growth rate.These research outcomes explicitly show an application potential of this novel antibacterial stainless steel in the dairy related food industry. | Li Nan Guogang Ren Donghui Wang Ke Yang | 2016 | Journal of Materials Science & Technology2016，32，5： | 3 |
| 8 | Tumor suppressor ASXL1 is essential for the activation of INK4B expression in response to oncogene activity and anti-proliferative signals显示文摘ASXL1 变化经常在 hematological 肿瘤被发现,并且 Asxl1 的损失在老鼠支持 myeloid 转变。这里我们在 vivo 在在 Histone H2A (H2AK119ub1 ) 上的 mono-ubiquitylated 离氨酸 119 的 deubiquitylation 为 ASXL1-BAP1 建筑群支持一个角色的现在的数据。Polycomb 组蛋白质在正常开发期间控制 INK4B-ARF-INK4A 地点的表达式,部分地通过催化 H2AK119 的 mono-ubiquitylation。自从地点的激活, INK4B-ARF-INK4A 玩一设有自动保险装置机制免于 tumorigenesis,我们调查了 ASXL1 依赖的 H2A deubiquitylation 是否在它的激活起一个作用。有趣地,我们发现 ASXL1 明确地为 p15 响应 oncogenic 发信号和外来的 anti-proliferative 的 INK4B 发信号。因为我们发现 ASXL1 和 BAP1 两个都在 INK4B 地点被充实,我们的结果建议 INK4B 地点的激活要求 H2AK119ub1 的 ASXL1/BAP1-mediated deubiquitylation。一致地,我们 ASXL1 变化与被联系的结果表演降低 p15 INK4B 和在主要骨头髓房间的造血的祖先的一个 proliferative 优点,和在多重房间线的 ASXL1 的那弄空导致抵抗到生长禁止的信号。一起拿,这研究连接 INK4B 表示的调停 ASXL1 的 H2A deubiquitylation 和 transcriptional 激活到它的肿瘤 suppressor 函数。 | Xudong Wu Ida Holst Bekker-Jensen Jesper Christensen Kasper Dindler Rasmussen Simone Sidoli Yan Qi Yu Kong Xi Wang Yajuan Cui Zhijian Xiao Guogang Xu Kristine Williams Juri Rappsilber Casper Kaae Sonderby Ole Winther Ole N Jensens Kristian Helin | 2015 | Cell Research2015，25，11： | 3 |
| 9 | New Discovery and Zircon Hf Isotopic Composition of the Early Yanshannian Monzogranite in the Yingyangguan Group of Eastern Guangxi, China显示文摘Objective The Yingyangguan Group is widely exposed in the southwestern segment of boundary belt between Yangtze and Cathaysian blocks and is mainly composed of a suit of lower-grade metamorphic marine volcanoclasticsedimentary rocks(Zhou Hanwen et al.,2002).Its forming age and petrogenesis are critical for better understanding the orogenic process and relationship of the Yangtze | LI Xiang TU Bing WANG Lingzhan TIAN Yang XIE Guogang ZHANG Jianyu | 2018 | Acta Geologica Sinica(English Edition)2018，92，4： | 2 |
| 10 | Tyrosine hydroxylase-positive cells and dopaminergic neuronal function in human embryonic stem cells: An electrophysiological validation显示文摘BACKGROUND: Induced differentiation strategies and cytochemical properties of human embryonic stem cells (hESCs) have been investigated. However, the electrophysiological functions of tyrosine hydroxylase (TH)-positive cells derived from hESCs remain unclear. OBJECTIVE: To investigate the differentiation efficiency of TH-positive cells from hESCs in vitro using modified four-step culture methods, including embryoid body formation, and to examine the functional characteristics of the differentiated TH-positive cells using electrophysiological techniques. DESIGN, TIME AND SETTING: Neuroelectrophysiology was performed at the Reproductive Medicine Center and Stem Cell Research Center, Peking University Third Hospital, and the Neuroscience Research Institute and Department of Neurobiology, Peking University, from September 2004 to August 2008. MATERIALS: The hESC line, PKU-1.1, a monoclonal cell line derived from a pre-implantation human blastocyst in the Reproductive Medical Center of Peking University Third Hospital. The patch clamp recording system was provided by the Neuroscience Research Institute and Department of Neurobiology, Peking University. METHODS: The hESC line was induced to differentiate into TH-positive cells in vitro using a modified four-step culture method, including the formation of embryoid body, as well as the presence of sonic hedgehog and fibroblast growth factor 8. The cell karyotype was assessed by G-banding karyotype analysis techniques and specific markers were detected immunocytochemically. Whole-cell configuration was obtained after obtaining a tight seal of over 1 GΩ. Ionic currents were detected by holding the cells at -70 mV and stepping to test voltages between -80 and 40 mV in 10-mV increments in voltage-clamp configuration. MAIN OUTCOME MEASURES: We measured the cell karyotype, specific cell markers, and the electrophysiological properties of the voltage-gated ion channels on the cell membrane of TH-positive dopaminergic cells differentiated from our hESCs line in vitro. RESULTS: The differentiated cells had a consistent appearance, and the majority of cells (> 90%) expressed TH and β-tubulion, as well as the neural progenitor marker, nestin. Cell karyotype analysis demonstrated that all of the hESCs had a stable and normal karyotype (46, XX) after dif-ferentiation. In addition, patch clamp recording showed that the 10 recorded TH-positive cells exhibited a fast inward current when the test voltage depolarized to -30 mV, and a delayed outward current when the test voltage depolarized to -10 mV. The peak of inward current was obtained at voltage between -10 mV and 0 mV, while the peak of outward current was obtained at 40 mV. The average peak of inward current density was (-50.05 ± 15.50) pA/pF, and the average peak of outward current density was (41.98 ± 13.55) pA/pF. CONCLUSION: More than 90% of the differentiated hESC-derived cells induced by the modified four-step culture method exhibit dopaminergic neuronal properties, including general electrophysiological functional properties, such as functional potassium and sodium channels. | Tianran Song | 2010 | Neural Regeneration Research2010，5，3： | 1 |
| 11 | Effect of human‐controlled hydrological regime on the source, transport, and flux of particulate organic carbon from the lower Huanghe (Yellow River)显示文摘 | Bangqi Hu Jun Li Naishuang Bi Houjie Wang Helong Wei Jingtao Zhao Luhua Xie Liang Zou Ruyong Cui Song Li Ming Liu Guogang Li | 2015 | Earth Surf. Process. Landforms2015，，8： | 1 |
| 12 | Revisiting an ancient inorganic aggregation-induced emission system:An enlightenment to clusteroluminescence显示文摘Organic and inorganic clusteroluminescence have attracted great attention while the underlying mechanisms is still not well understood.Here,we employed a series of ancient inorganic complexes platinocyanides with aggregation-induced emission property to elucidate the mechanism of clusteroluminescence including how does the chromophore form and how does the solid structures influence the luminescence behaviors.The results indicate that the isolated platinocyanide cannot work as a chromophore to emit visible light,while their clusterization at aggregate state can trigger the d-orbitals coupling of the platinum atoms to facilitate the electron exchange and delocalization to form a new chromophore to emit visible light.Furthermore,the counter ions and H2O ligands help to rigidify the three-dimensional network structure of the platinocyanides to suppress the excited state nonradiative decay,resulting in the high quantum yield of up to 96%.This work fundamentally helps understanding both the organic and inorganic clusteroluminescence phenomenon. | Zheng Zhao Zaiyu Wang Javad Tavakoli Guogang Shan Jianyu Zhang Chen Peng Yu Xiong Xuepeng Zhang Tsz Shing Cheung Youhong Tang Bolong Huang Zhaoxun Yu Jacky W.Y.Lam Ben Zhong Tang | 2021 | Aggregate2021，2，2： | 1 |
| 13 | Contrast-enhanced ultrasound (CEUS) facilitated US in detecting lateral neck lymph node metastasis of thyroid cancer patients: diagnosis value and enhancement patterns of malignant lymph nodes显示文摘 | Dapeng Xiang Yurong Hong Bo Zhang Pintong Huang Guogang Li Ping Wang Zhiyu Li | 2014 | European Radiology2014，，10： | 1 |
| 14 | Study of the separation efficiency and the flow field of a dynamic cyclone显示文摘 | Jinyu Jiao Ying Zheng Guogang Sun Jun Wang | 2005 | Separation and Purification Technology2005，，2： | 1 |
| 15 | In situ fabrication of Na3V2(PO4)3 quantum dots in hard carbon nanosheets by using lignocelluloses for sodium ion batteries显示文摘The rational assembly of quantum dots on two-dimensional(2 D) carbonaceous materials is very promising to produce materials, but remains a challenge. Here, we develop an assembly strategy of growing Na3 V2(PO4)3 quantum dots with superlattice structure(NVP-QDs-SL) for obtaining precise control of the size, distribution and crystallinity. The multifunctional lignocelluloses(LCs) used as a hard carbon source induce heterogeneous nucleation and confined growth of NVP-QDs-SL, leading to the uniform distribution of NVP-QDs-SL in H/S-doped hard carbon ultra-thin nanosheets(HCS). Detailed electrochemical analysis results from sodium-ion batteries of NVP-QDs-SL show that NVP-QDs-SL could trap the electrons inside HCS, significantly enhancing Na ion storage and transfer kinetics. Compared to the common Na3 V2(PO4)3 nanoparticle cathode, the NVP-QDs-SL/HCS cathode exhibits a high reversible capacity of 149.2 m A h g^-1 at a 0.1 C rate, which is far beyond the theoretical capacity of Na3 V2(PO4)3(117.6 m A h g^-1).At the ultrahigh current rate of 100 C, this cathode still remains a high discharge capacity of 40 m A h g-1.Even after cycling at 20 C over 3000 cycles, an ultrahigh coulombic efficiency close to 100% is still obtained,highlighting its excellent long cycling life, remarkable rate performance and energy density. | Qihao Zhang Xudong Zhang Wen He Guogang Xu Manman Ren Jinhua Liu Xuena Yang Feng Wang | 2019 | Journal of Materials Science & Technology2019，35，10： | 1 |
| 16 | Microstructure and formation mechanism of in-situ TiC-TiBJFe composite coating 显示文摘 | Wang Zhenting Zhou Xiaohui Zhao Guogang | 2008 | Transactions Nonferrous Mettals Society China2008，，18： | 1 |
| 17 | Polybrominated diphenyl ethers and organochlorine pesticides in sewage sludge of wastewater treatment plants in China显示文摘 | Yawei Wang Qinghua Zhang Jianxia Lv An Li Hanxia Liu Guogang Li Guibin Jiang | 2007 | Chemosphere2007，，9： | 1 |
| 18 | Analysis of Flow-Induced Vibration of Steam Generator Tubes Subjected to Cross Flow显示文摘 | Wensheng Zhao Fei Xue Guogang Shu Meiqing Liu Lei Lin Zhaoxi Wang | 2014 | Nuclear Engineering and Design2014，，： | 1 |
| 19 | Axonal accumulation of hyperpolarization-activated cy- clic nucleotide-gated cation channels contributes to me- chanical allodynia after peripheral nerve injury in rat 显示文摘 | Jiang Yuqiu Xing Guogang Wang Shenglan | 2008 | Pain2008，137，： | 1 |
| 20 | A Drop in PricesDoesn't Suggest Deflation显示文摘In the four decades since the beginning of China's reform and opening-up,price increases have been more common than price declines.This trend has led the academic community to focus largely on understanding the origins,mechanics,impactsand solutions forinflation. | WANG Guogang | 2023 | China Forex2023，，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员