|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Rational groundwater table indicated by the ecophysiological parameters of the vegetation:A case study of ecological restoration in the lower reaches of the Tarim River显示文摘Populus euphratica Oliv 和 Tamarix ramosissima Ldb 的 eco 生理的反应和改编在水版本时期期间被调查。九个典型区域和 45 横断沿着 Tarim 河的更低的活动范围被选择。地下水桌子以及植物表演和脯氨酸,可溶的糖,和植物的内容内长的荷尔蒙(骆驼毛的织物, CTK ) 在叶子被监视并且分析。地下水桌子在不同区域被提起,横断走水路推出程序。生理的压力到 P。euphratica 和 T。ramosissima 在水版本以后被减少了。我们的结果建议在学习区域的地下水桌子在 3.15~4.12 m 留下了,从 9.28~11.06 的脯氨酸内容( mmol/L ),从 224.71~252.16 的可溶的糖内容( mmol/L ),从 3.59~5.01 的 ABA 内容( ng/g FW ),并且从 4.01~4.56 的 CK 内容( ng/g FW ),为最佳生长和 P 的恢复。植物性能参数和水申请的效率显示的 euphratica 最高。在学习区域的地下水桌子在 2.16~3.38 m 留下了,从 12.15~14.17 的脯氨酸内容( mmol/L ),从 154.71~183.16 的可溶的糖内容( mmol/L ),从 2.78~4.86 的 ABA 内容( ng/g FW ),并且从 3.78~4.22 的 CK 内容( ng/g FW ),为最佳生长和 T 的恢复。植物表演参数和水申请的效率显示的 ramosissima 最高。为在学习区域的植被的恢复的合理地下水桌子在 3.15 ~ 3.38 m。 | CHEN Yaning WANG Qiang LI Weihong RUAN Xiao CHEN Yapengr ZHANG Lihua | 2006 | Chinese Science Bulletin2006，51，A01： | 31 |
| 2 | Impacts of temperature and precipitation on runoff in the Tarim River during the past 50 years显示文摘The relationship between climate change and water resources in the Tarim River was analyzed by combining the temperature,precipitation and streamflow data from 1957 to 2007 from the four headstreams of the Tarim River (Aksu,Hotan,Yarkant and Kaidu rivers) in the study area.The long-term trend of the hydrological time series including temperature,precipitation and streamflow were studied using correlation analysis and partial correlations analysis.Holt double exponential smoothing was used to fit the trends between streamflow and the two climatic factors of Aksu River,Hotan River and Yarkant River.The streamflow of the main stream was forecasted by Autoregressive Integrated Moving Average Model (ARIMA) modeling by the method of time series analysis.The results show that the temperature experienced a trend of monotonic rising.The precipitation and runoff of the four headstreams of the Tarim River increased,while the inflow to the headstreams increased and the inflow into the Tarim River decreased.Changes of temperature and precipitation had a significant impact on runoff into the four headstreams of the Tarim River: the precipitation had a positive impact on water flow in the Aksu River,Hotan River and Kaidu River,while the temperature had a positive impact on water flow in the Yarkant River.The results of Holt double exponential smoothing showed that the correlation between the independent variable and dependent variable was relatively close after the model was fitted to the headstreams,of which only the runoff and temperature values of Hotan River showed a significant negative correlation.The forecasts by the ARIMA model for 50 years of annual runoff at the Allar station followed the pattern of the measured data for the same years.The short-term forecasts beyond the observed series adequately captured the pattern in the data and showed a decreasing tendency in the Tarim River flow of 3.07% every ten years.The results showed that global warming accelerated the water recharge process of the headstreams.The special hydrological characteristics of the arid area determined the significant association between streamflow and the two climatic factors studied.Strong glacier retreat is likely to bring a series of flood disasters within the study area. | YuTing FAN YaNing CHEN WeiHong LI HuaiJun WANG XinGong LI | 2011 | Journal of Arid Land2011，3，3： | 13 |
| 3 | Runoff Responses to Climate Change in Arid Region of Northwestern China During 1960-2010显示文摘Based on runoff, air temperature, and precipitation data from 1960 to 2010, the effects of climate change on water resources in the arid region of the northwestern China were investigated. The long-term trends of hydroclimatic variables were studied by using both Mann-Kendall test and distributed-free cumulative sum (CUSUM) chart test. Results indicate that the mean annual air temperature increases significantly from 1960 to 2010. The annual precipitation exhibits an increasing trend, especially in the south slope of the Tianshan Mountains and the North Uygur Autonomous Region of Xinjiang in the study period. Step changes occur in 1988 in the mean annual air temperature time series and in 1991 in the precipitation time series. The runoff in different basins shows different trends, i.e., significantly increasing in the Kaidu River, the Aksu River and the Shule River, and decreasing in the Shiyang River. Correlation analysis reveals that the runoff in the North Xinjiang (i.e., the Weigan River, the Heihe River, and the Shiyang River) has a strong positive relationship with rainfall, while that in the south slope of the Tianshan Mountains, the middle section of the north slope of the Tianshan Mountains and the Shule River has a strong positive relationship with air temperature. The trends of runoff have strong negative correlations with glacier coverage and the proportion of glacier water in runoff. From the late 1980s, the climate has become warm and wet in the arid region of the northwestern China. The change in runoff is interacted with air temperature, precipitation and glacier coverage. The results show that streamflow in the arid region of the northwestern China is sensitive to climate change, which can be used as a reference for regional water resource assessment and management. | WANG Huaijun CHEN Yaning LI Weihong DENG Haijun | 2013 | Chinese Geographical Science2013，23，3： | 11 |
| 4 | Grey-matter volume as a potential feature for the classification of Alzheimer's disease and mild cognitive impairment: an exploratory study显示文摘Specific patterns of brain atrophy may be helpful in the diagnosis of Alzheimer's disease(AD). In the present study, we set out to evaluate the utility of grey-matter volume in the classification of AD and amnestic mild cognitive impairment(aMCI) compared to normal control(NC) individuals. Voxel-based morphometric analyses were performed on structural MRIs from 35 AD patients, 27 aMCI patients, and 27 NC participants. A two-sample two-tailed t-test was computed between the NC and AD groups to create a map of abnormal grey matter in AD. The brain areas with significant differences were extracted as regions of interest(ROIs), and the grey-matter volumes in the ROIs of the aMCI patients were included to evaluate the patterns of change across different disease severities. Next, correlation analyses between the grey-matter volumes in the ROIs and all clinical variables were performed in aMCI and AD patients to determine whether they varied with disease progression. The results revealed significantly decreased grey matter in the bilateral hippocampus/parahippocampus, the bilateral superior/middle temporal gyri, and the right precuneus in AD patients.The grey-matter volumes were positively correlated with clinical variables. Finally, we performed exploratory linear discriminative analyses to assess the classifying capacity of grey-matter volumes in the bilateral hippocampus and parahippocampus among AD, aMCI, and NC. Leave-one-out crossvalidation analyses demonstrated that grey-matter volumes in hippocampus and parahippocampus accurately distinguished AD from NC. These findings indicate that grey-matter volumes are useful in the classification of AD. | Yane Guo Zengqiang Zhang Bo Zhou Pan Wang Hongxiang Yao Minshao Yuan Ningyu An Haitao Dai Luning Wang Xi Zhang Yong Liu | 2014 | Neuroscience Bulletin2014，30，3： | 7 |
| 5 | Evolvement Characteristics of Population and Economic Gravity Centers in Tarim River Basin,Uygur Autonomous Region of Xinjiang,China显示文摘Using the data at the county level and the regional gravity center model,we calculated six key socio-economic gravity centers,namely population,GDP,output values of primary,secondary and tertiary industries,and arable land area in the Tarim River Basin for each year from 1980 to 2009.We inspected the spatial dynamics of these centers and found that the gravity centers of population and economy evolved simultaneously.The disproportional growth between the population and the economy is also analyzed.The results show that:1)The gravity centers of the GDP,the output values of the main three industries and arable land area show migration trending from southwest to northeast,while the population gravity center shows an excessive growth in the southwest during the same time period.The migration amplitude of the GDP and output values of primary industry,secondary industry,tertiary industry are measurably higher than that of the population.2)The population gravity center has a negative correlation with the gravity centers of secondary and tertiary industries output values in both longitudinal and latitudinal directions,and a positive correlation with that of primary industry output value in the longitudinal direction.Based on the analysis of correlation coefficient and offset distance,the imbalance between the population and the economy has increased since the 1980s,with regional economic differences now exceeding the international cordon. | WANG Yang CHEN Yaning LI Zhi | 2013 | Chinese Geographical Science2013，23，6： | 6 |
| 6 | Potential risks and challenges of climate change in the arid region of northwestern China显示文摘In the arid region of northwestern China(ARNC),water resources are the most critical factor restricting socioeconomic development and influencing the stability of the area’s ecological systems.The region’s complex water system and unique hydrological cycle show distinctive characteristics.Moreover,the intensified hydrological cycle and extreme climatic and hydrological events resulting from global warming have led to increased uncertainty around water resources as well as heightened conflict between water supply and water demand.All of these factors are exerting growing pressures on the socioeconomic development and vulnerable ecological environment in the region.This research evaluates the impacts of climate change on water resources,hydrological processes,agricultural system,and desert ecosystems in the ARNC,and addresses some associated risks and challenges specific to this area.The temperature is rising at a rate of 0.31C per decade during 1961–2017 and hydrological processes are being significantly influenced by changes in glaciers,snow cover,and precipitation form,especially in the rivers recharged primarily by melt water.Ecosystems are also largely influenced by climate change,with the Normalized Difference Vegetation Index(NDVI)of natural vegetation exhibited an increasing trend prior to 1998,and then reversed in Xinjiang while the Hexi Corridor of Gansu showed the opposite trends.Furthermore,the desert-oasis transition zone showed a reduction in area due to the warming trend and the recent rapid expansion of irrigated area.Both the warming and intensified drought are threatening agriculture security.The present study could shed light on sustainable development in this region under climate change and provides scientific basis to the construction of the“Silk Road Economic Belt”. | Yaning Chen Xueqi Zhang Gonghuan Fang Zhi Li Fei Wang Jingxiu Qin Fan Sun | 2020 | Regional Sustainability2020，1，1： | 6 |
| 7 | Impacts of Climatic Change on River Runoff in Northern Xinjiang of China over Last Fifty Years显示文摘The characteristics of climatic change and river runoff, as well as the response of river runoff to climatic change in the northern Xinjiang are analyzed on the basis of the hydrological and meteorological data over the last 50 years by the methods of Mann-Kendall nonparametric test and the nonlinear regression model. The results show that: 1) The temperature and the precipitation increased significantly in the whole northern Xinjiang, but the precipitation displayed no obvious change, or even a decreasing trend in the northern mountainous area of the northern Xinjiang. 2) River runoff varied in different regions in the northern Xinjiang. It significantly increased in the northern slope of the Tianshan Mountains and the north of the northern Xinjiang (p = 0.05), while slightly increased in the west of the northern Xinjiang. 3) North Atlantic Oscillation (NAO) affects river runoff by influencing temperature and precipitation. The NAO and precipitation had apparent significant correlations with the river runoff, but the temperature did not in the northern Xinjiang. Since the mid-1990s river runoff increase was mainly caused by the increasing temperature in the northern slope of the Tianshan Mountains and the north of the northern Xinjiang. Increased precipitation resulted in increased river runoff in the west of the northern Xinjiang. | YANG Yuhui CHEN Yaning LI Weihong WANG Minzhong SUN Guili | 2010 | Chinese Geographical Science2010，20，3： | 6 |
| 8 | Speciation of iron in atmospheric particulate matter by EXAFS显示文摘The study on elemental speciation in atmospheric particulate matter (PM) is important for understanding the formation and origin of pollution and evaluating their toxicity. In this paper,the speci- ation of iron in atmospheric PM was investigated with extended X-ray absorption fine structure (EXAFS) spectra based on synchrotron radiation. The chemi- cal components of PM can be calculated by regres- sion analysis of EXAFS spectra. This is a non-destructive method. In order to have knowledge of the influence of chemical components on EXAFS spectra,we prepared a series of mixed reference samples,and proved the precision of method is good. The PM samples with different particle sizes and from different sampling sites were collected in Shanghai,China. The chemical components of the samples were calculated by regression analysis of EXAFS spectra. The results show that the iron in all PM samples mainly consist of Fe2O3,Fe3O4 and Fe2(SO4)3,but their proportions are different in dif- ferent samples. The changes of components among PM samples were observed preliminarily. The con- centrations of iron in the samples were determined by proton-induced X-ray emission (PIXE) technique. It is observed that the concentrations of iron in the sam- ples of iron and steel industrial district were much higher than those of other districts,and chemical components were also different from those of others. | WANG Yinsong LI Aiguo ZHANG Yuanxun XIE Yaning LI Delu LI Yan ZHANG Guilin | 2006 | Chinese Science Bulletin2006，51，18： | 5 |
| 9 | Preparation and characteristics of flexible all-organic thin-film field-effect transistor显示文摘All-organic thin-film field-effect transistor was prepared on flexible poly(ethylene-terephthalate) (PET) substrate. Poly(methyl-methacrylate) (PMMA) and pentacene are used as a dielectric layer and a semiconductor layer, respectively. The hole mobility of the transistor can reach 2.10×10-2 cm2/Vs, and the on/off current ratio was larger than 105. The performances of the transistor, when the substrate is cured under different radius, were also measured. It was found that the device performance did not change when the curly direction was vertical to the channel length direction and when the curly direction was parallel to the channel length direction with 3.67 cm curvature radius, the mobility of the device increased by more than 20% and the on/off ratio decreased more than one order. | QIU Yong, HU Yuanchuan, Dong Guifang, WANG Liduo, Xie Junfeng & MA Yaning Organic Optoelectronic Laboratory,Department of Chemistry, Tsinghua University, Beijing 100084, China (e-mail: qiuy@mail.Tsinghua.edu.cn) | 2003 | Chinese Science Bulletin2003，48，15： | 5 |
| 10 | Engineered trimeric ACE2 binds viral spike protein and locks it in'Thfee-up'conformation to potently inhibit SARS-CoV-2 infection显示文摘Dear Editor,Coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has resulted in a severe global pandemic Following SARS-CoV,SARS-CoV-2 is yet another emerge nt beta-coronavirus threate ning human health.1 However,seventeen years after the SARS pandemic,no targeted vaccines or therapeutics have been approved for SARS,while some of them might have held promise for treating COVID-19.Many neutralizing antibodies against SARS-CoV-2 are currently being developed.However,RNA viruses are known to have high mutation rates. | Liang Guo Wenwen Bi Xinling Wang Wei Xu Renhong Yan Yuanyuan Zhang Kai Zhao Yaning Li Mingfeng Zhang Xia Cai Shibo Jiang Youhua Xie Qiang Zhou Lu Lu Bobo Dang | 2021 | Cell Research2021，31，1： | 5 |
| 11 | In-situ/operando techniques to identify active sites for thermochemical conversion of CO_(2) over heterogeneous catalysts显示文摘The catalytic conversion of CO_(2) to fuels or chemicals is considered to be an effective pathway to mitigate the greenhouse effect. To develop new types of efficient and durable catalysts, it is critical to identify the catalytic active sites, surface intermediates, and reaction mechanisms to reveal the relationship between the active sites and catalytic performance. However, the structure of a heterogeneous catalyst usually dynamically changes during reaction, bringing a great challenge for the identification of catalytic active sites and reaction pathways. Therefore, in-situ/operando techniques have been employed to real-time monitor the dynamic evolution of the structure of active sites under actual reaction conditions to precisely build the structure–function relationship. Here, we review the recent progress in the application of various in-situ/operando techniques in identifying active sites for catalytic conversion of CO_(2) over heterogeneous catalysts. We systematically summarize the applications of various optical and X-ray spectroscopy techniques, including Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and X-ray absorption spectroscopy (XAS), in identifying active sites and determining reaction mechanisms of the CO_(2) thermochemical conversion with hydrogen and light alkanes over heterogeneous catalysts. Finally, we discuss challenges and opportunities for the development of in-situ characterization in the future to further enlarge the capability of these powerful techniques. | Kai Feng Yaning Wang Man Guo Jingpeng Zhang Zhengwen Li Tianyu Deng Zhihe Zhang Binhang Yan | 2021 | Journal of Energy Chemistry2021，30，11： | 5 |
| 12 | The structure of erastin-bound xCT-4F2hc complex reveals molecular mechanisms underlying erastin-induced ferroptosis显示文摘Dear Editor,Ferroptosis is an iron-dependent,non-apoptotic form of regulated cell death characterized by an accumulation of lipid.derived reactive oxygen species(ROS).The small-molecule compo und erastin in duces ferroptosis via in hibiti ng the cystineglutamate antiporter system x_(c).which consists of two subunits,namely the light chain xCT and the heavy chain 4F2hc(encoded by the SLC7A11 and SLC3A2 genes,respectively).^(1-4) | Renhong Yan Enjun Xie Yaning Li Jin Li Yuanyuan Zhang Ximin Chi Xueping Hu Lei xu Tingjun Hou Brent R.Stockwell Junxia Min Qiang Zhou Fudi Wang | 2022 | Cell Research2022，32，7： | 4 |
| 13 | Protective effect of Chushizi(Fructus Broussonetiae)on acetaminophen-induced rat hepatitis by inhibiting the Toll-like receptor 3/c-Jun N-terminal kinase/c-jun/c-fos/janus protein tyrosine kinase/activators of transcription 3 pathway显示文摘OBJECTIVE:To observe the intervention of Chushizi(Fructus Broussonetiae)(CSZ)on drug-induced liver injury(DILI)in rats,as well as indicators of liver function,serum levels of inflammatory cytokines,and expression of proteins and m RNA associated with toll-like receptor 3(TLR3)and the signal transducer and activator of transcription 3(STAT3)pathway in the liver[TLR3,janus protein tyrosine kinase 2(JAK2),c-jun,c-fos,c-Jun N-terminal kinase 2(JNK2),and STAT3].METHODS:Forty specified pathogen free grade Sprague-Dawley rats were randomly divided into the control group,the model group,the silybin group and the CSZ group.Rats were given acetaminophen(APAP)to trigger DILI.Histopathology of the liver was observed by hematoxylin-eosin staining.The levels of alanine aminotransferase(ALT),aspartate transaminase(AST),direct bilirubin(DBIL),and total bilirubin(TBIL)in serum were detected by a semi-automatic biochemical instrument.Content of tumor necrosis factor alpha(TNF-α),interleukin(IL)-6,IL-13,and IL-22 in serum were detected by the enzyme-linked immunosorbent assay,the expression of TLR3,phosphorylation of JAK2(p-JAK2),while c-jun and c-fos proteins in the liver were determined by immunohistochemistry;expression of JNK2,and STAT3 in the liver were assayed by Western blot and real-time quantitative polymerase chain reaction.P-JNK2 and p-STAT3 in the liver were assayed by Western blot.RESULTS:After treatment,the activity of ALT,AST,and concentrations of TBIL,DBIL,TNF-α,IL-6,as well as IL-13 in serum,were lower than those in the model group,and expression of p-JAK2,TLR3,c-jun,c-fos,p-STAT3,and p-JNK2 could be downregulated.CONCLUSION:Our findings suggest that CSZ is a valid medicine to alleviate APAP-induced DILI,while its partial mechanism may regulate the TLR3/JNK/c-jun/c-fos/JAK/STAT3 pathway. | Zhang Yandong Biao Yaning Chu Xinqiao Hao Lei Shi Cheng Liu Yu Zhang Yixin Wang Xi | 2020 | Journal of Traditional Chinese Medicine2020，40，6： | 4 |
| 14 | Plant Growth-Promoting Traits in Rhizobacteria of Heavy Metal-Resistant Plants and Their Effects on Brassica nigra Seed Germination显示文摘Phytoremediation is an emerging technology that uses plants and their associated microbes to clean up pollutants from the soil, water, and air. In order to select the plant growth-promoting rhizobacteria(PGPR) for phytoremediation of heavy metal contamination, 60 bacterial strains were isolated from the rhizosphere of two endemic plants, Prosopis laevigata and Spharealcea angustifolia, in a heavy metal-contaminated zone in Mexico. These rhizobacterial strains were characterized for the growth at different pH and salinity, extracellular enzyme production, solubilization of phosphate, heavy metal resistance, and plant growth-promoting(PGP) traits, including production of siderophores and indol-3-acetic acid(IAA). Overall, the obtained rhizobacteria presented multiple PGP traits. These rhizobacteria were also resistant to high levels of heavy metals(including As as a metalloid)(up to 480 mmol L(-1)As(V), 24 mmol L(-1)Pb(Ⅱ), 21 mmol L(-1)Cu(Ⅱ), and 4.5 mmol L(-1)Zn(Ⅱ)). Seven rhizobacterial strains with the best PGP traits were identified as members of Alcaligenes, Bacillus, Curtobacterium, and Microbacterium, and were selected for further bioassay.The inoculation of Brassica nigra seeds with Microbacterium sp. CE3R2, Microbacterium sp. NE1R5, Curtobacterium sp. NM1R1,and Microbacterium sp. NM3E9 facilitated the root development; they significantly improved the B. nigra seed germination and root growth in the presence of heavy metals such as 2.2 mmol L(-1)Zn(Ⅱ). The rhizobacterial strains isolated in the present study had the potential to be used as efficient bioinoculants in phytorremediation of soils contaminated with multiple heavy metals. | Brenda ROMN-PONCE Diana Miryel REZA-VZQUEZ Sonia GUTIRREZ-PAREDES María de Jesús DE HARO-CRUZ Jessica MALDONADO-HERNNDEZ Yanely BAHENA-OSORIO Paulina ESTRADA-DE LOS SANTOS En Tao WANG María Soledad VSQUEZ-MURRIETA | 2017 | Pedosphere2017，27，3： | 4 |
| 15 | Structural basis for bivalent binding and inhibition of SARS-CoV-2 infection by human potent neutralizing antibodies显示文摘Neutralizing monoclonal antibodies(nAbs)to severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)represent promising candidates for clinical intervention against coronavirus disease 2019(COVID-19).We isolated a large number of nAbs from SARS-CoV-2-infected individuals capable of disrupting proper interaction between the receptor binding domain(RBD)of the viral spike(S)protein and the receptor angiotensin converting enzyme 2(ACE2).However,the structural basis for their potent neutralizing activity remains unclear.Here,we report cryo-EM structures of the ten most potent nAbs in their native full-length IgG-form or in both IgG-form and Fab-form bound to the trimeric S protein of SARS-CoV-2.The bivalent binding of the full-length IgG is found to associate with more RBDs in the“up”conformation than the monovalent binding of Fab,perhaps contributing to the enhanced neutralizing activity of IgG and triggering more shedding of the S1 subunit from the S protein.Comparison of a large number of nAbs identified common and unique structural features associated with their potent neutralizing activities.This work provides a structural basis for further understanding the mechanism of nAbs,especially through revealing the bivalent binding and its correlation with more potent neutralization and the shedding of S1 subunit. | Renhong Yan Ruoke Wang Bin Ju Jinfang Yu Yuanyuan Zhang Nan Liu Jia Wang Qi Zhang Peng Chen Bing Zhou Yaning Li Yaping Shen Shuyuan Zhang Long Tian Yingying Guo Lu Xia Xinyue Zhong Lin Cheng Xiangyang Ge Juanjuan Zhao Hong-Wei Wang Xinquan Wang Zheng Zhang Linqi Zhang Qiang Zhou | 2021 | Cell Research2021，31，5： | 4 |
| 16 | Impacts of Park Landscape Structure on Thermal Environment Using QuickBird and Landsat Images显示文摘Urban parks composed mostly of vegetation and water bodies can effectively mitigate the urban heat island effect. Many studies have investigated the cooling effects of urban parks; however, little attention has been given to park landscape structure. Based on landscape metrics, this study has explored the influences of the park landscape structure on its inner thermal environment, taking heavily urbanized Beijing Municipality in China as the study area. Three indices, including the percentage of landscape(PLAND), landscape shape index(LSI) and aggregation index(AI), were used to measure the composition and configuration characteristics of the landscape components inside the parks. The indices were calculated for five landscape types being interpreted from Quickbird images. Urban thermal conditions were measured using the land surface temperature(LST) derived from Landsat TM images. The results showed that the park LST had a negative relationship with the park size, but no significant relationship was found with park shape. For the park's interior landscape, however, the configuration and composition characteristics of the landscape components inside the park explained 70% of the park LST variance. The area percentage of water bodies and the aggregation index of woodland were identified as the key influencing characteristics. In addition, when the composition and configuration characteristics of the park landscape components were separately considered, the configuration characteristics(LSI and AI) explained approximately 54% of the variance in park LST, which was comparable with that explained by the composition characteristics(PLAND). Thus, this study suggested that an effective and practical way for urban cooling park design is the optimization of spatial configuration of landscape components inside the park. | XU Xinliang CAI Hongyan QIAO Zhi WANG Liang JIN Cui GE Yaning WANG Luyao XU Fengjiao | 2017 | Chinese Geographical Science2017，27，5： | 4 |
| 17 | Law of gas production during coal heating oxidation显示文摘Coal spontaneous combustion is a great threat to mine safety,and gas is the key index to describe coal spontaneous combustion.Taking the coal samples of different kinds of coal as research object,the temperature programmed oxidation experiment was carried out,and the gases produced by coal samples at different temperatures were collected and analyzed by gas chromatography.This research studied the variation characteristics of gas species and gas concentrations in different coal samples during heating oxidation.The experimental results show that different coal samples produce different kinds of gases in the process of heating and oxidation.The order of gas production is CO,C2H6,C2H4,C3H8,and the relationship between gas production and temperature is approximately exponential.With the increase of coal metamorphic degree,the turning point temperature of sharp rise in coal sample gas production rate become higher,the oxidation ability of coal sample decreases,and the quantity of gas production decreases during the same time period. | Xianwei Dong Zhichao Wen Fusheng Wang Yaning Meng | 2019 | International Journal of Mining Science and Technology2019，29，4： | 4 |
| 18 | Effect of PCEs with Different Functional Groups on the Performance of Cement Paste显示文摘The adsorption behaviors and dispersing properties of polycarboxylate superplasticizer(PCE) with different functional groups were systematically analyzed to reveal the theory and methods of modifying PCE molecular structures and regulating PCE performances. By substituting carboxylic groups with sulfonic groups, ester groups or acylamino groups, respectively, modified PCEs with different functional groups were synthesized. Results show that introducing low amount of ester groups or sulfonic groups into the PCE molecules has no negative effects on the fluidity of cement paste, while introducing acylamino groups into PCE molecules significantly weakens the fluidity of cement paste. At low amount(when the molar ratio of sodium methallyl sulfonate to TPEG is lower than 0.4), the rapid adsorption of sulfonic groups onto the cement particles contributes to the high dispersing performance of the sulfonic group modified PCEs. When the substitution ratio of acrylic acid by sulfonic acid is higher than 0.4, the viscosity and the yield stress of cement paste increases sharply. Redundant sulfonic groups lead to the excessive charge density of the PCE, which contributes to the inhomogeneous adsorption on the cement grains and hence results in the decline of the dispersing performance. Substitution of carboxylic group by acylamino group or ester group slightly changes the viscosity as well as the yield stress of cement paste. Introducing sulfonic group into PCE molecule improves the adsorption behavior of PCEs, while introducing ester group or acylamino group into PCE depresses the adsorption properties. | 何燕 ZHANG Xiong WANG Yiting KONG Yaning JI Tao SHUI Liangliang WANG Xiaofu WANG Haoren | 2019 | Journal of Wuhan University of Technology(Materials Science)2019，34，5： | 3 |
| 19 | Breakthrough Technologies for the Biorefining of Organic Solid and Liquid Wastes显示文摘有机固液废弃物包含大量能量、养分和水分,不应仅视其为废物。数十年来,人们一直对城市固体废物进行回收、堆制和燃烧,并从中提取能量和有价值的物质。污水的首要管理策略是治理和排放。随着技术的进步,通过新方法使利用固体废物和废水成为可能。考虑到废物特殊的化学、物理和生物性质,需要整合多种技术以使废物的能量和价值回收最大化。为此,生物炼制是完全利用废物中的能量和价值的一个合适的方法。研究证明,不可回收废弃物和生物固体可通过不同方法转化为可利用的热能、电能、燃料和化学品,并且液体废物或能帮助农作物和藻类的成长,为能量回收和食物生产提供不同的选择。本文针对有机固液废物提出新型生物炼制方案,这些废物来源于城市废料、食品和生物加工厂以及动物生产设施。四大新型突破性科技——真空辅助高温厌氧消化、扩展鱼菜共生系统、含油废物经甘油裂解制取生物柴油和微波辅助热化学转化,均可运用于生物炼制方案中,从而成功将废物转化,用以生产化学品、化肥、能量(沼气、合成气、生物柴油和生物油)、食物、饲料,得到干净的水并显著减少污染物的排放。 | Paul Chen Erik Anderson Min Addy Renchuan Zhang Yanling Cheng Peng Peng Yiwei Ma Liangliang Fan Yaning Zhang Qian Lu Shiyu Liu Nan Zhou Xiangyuan Deng Wenguang Zhou Muhammad Omar Richard Griffith Faryal Kabir Hanwu Lei Yunpu Wang Yuhuan Liu Roger Ruan | 2018 | Engineering2018，4，4： | 3 |
| 20 | Influence of Polycarboxylate Superplasticizer on Rheological Behavior in Cement Paste显示文摘Molecular structures of polycarboxylate(PCE) superplasticizer significantly affect the rheological properties of cement paste. Consequently, we employed self-synthesized PCE copolymers with different carboxylic densities to investigate their influence on the rheological behavior of cement paste. Three typical rheological models were applied to analyze the rheological properties, including Power-law model, Bingham model as well as Herschel-Buikley model. In addition, the thixotropical performances of cement paste in the presence of PCE with different carboxylic densities were investigated. The results show that the carboxylic density of PCE greatly influences the dispersing performance of PCE superplasticizers. As carboxylic density increases, the dispersing capability of PCE improves, and P(PEG1-AA6) possesses the strongest dispersing capability, the initial fluidity and 1 h fluidity of cement paste are both the highest, and cement paste has the lowest viscosity and the smallest hysteresis loop. | 何燕 ZHANG Xiong KONG Yaning WANG Xiaofu SHUI Liangliang WANG Haoren | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，4： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员