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21篇 您的检索式:作者名="Cao Xiaoqiang"
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1Regional patterns of particulate spectral absorption in the Pearl River estuary显示文摘Spectral absorption coefficients of the total particulate, ap(l ), nonalgal particulate, ad(l ), and phyto-plankton pigment, aph(l ), in the Pearl River estuary and its vicinity waters were determined using the quantitative filter technique. The particulate absorption ap(443) ranged from 0.04 to 1.82 m-1, with the corresponding aph(443) ranging from 0.016 to 0.484 m-1. Two typical spectral patterns are found for the total particulate absorption. For the first typi-cal spectral pattern, the total particulate absorption spectra are similar to that of nonalgal particulate, with values of absorption coefficient decreasing with wavelength. In con-trast, for the second spectral pattern the spectral absorptions by total particulate are very similar to that of phytoplankton pigment. The spectral dependency of absorption by nonalgal particulate follows an exponential increase toward short wavelengths, with an average slope of 0.012±0.002 nm-1. The nonalgal absorption and the fraction of the nonalgal particulate absorption to the total particulate absorption exhibit a distinct trend of decreasing with salinity of the sur-face water. Phytoplankton pigment absorption exhibits a clear trend of increasing nonlinearly with chlorophyll a con-centration. The relationships between the phytoplankton pigment absorption and chlorophyll a concentration can be described by power law, with the determination coefficient r2 of 0.82. But only weak relationships between ap(l ) and chlorophyll a concentration are observed, with the determination coefficient r2 of 0.42. The relatively large scatter around ap(443) versus chl-a relationship would be attributed to the effects of loading of the nonalgal particulate absorption. Our analysis indicated that such relationships similar to that for Case Ⅰ waters can be applicable to optically complex Case Ⅱ waters if the effects caused by nonalgal are corrected. The chlorophyll-specific absorption coefficients of phytoplankton pigment are not constant, it increases with decreasing chlorophyll a level. To improve the accuracy of bio-optical algorithms for remote sensing in coastal waters, further investigations on the variations of specific absorption of chlorophyll pigment must be made.CAO Wenxi, YANG Yuezhong, XU Xiaoqiang, HUANG Liangmin & ZHANG Jianlin LED Laboratory, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China Correspondence should be addressed to Cao Wenxi (e-mail: wxcao@ scsio.ac.cn) 2003Chinese Science Bulletin2003,48,21:24
2ESCRT-I Component VPS23A Affects ABA Signaling by Recognizing ABA Receptors for Endosomal Degradation显示文摘受体在过去的十年在植物科学成为了很重要的进展之一的 PYR/PYL/RCAR-type abscisic 酸(骆驼毛的织物) 的最近的发现。在哺乳动物,排序的 endosomal 充当一条重要小径到 downregulate 受体的不同类型,而是它在植物荷尔蒙发信号的角色糟糕被理解。这里,我们报导那 ubiquitin 象 E2 一样蛋白质, VPS23A,是 ESCRT-I 的一个关键部件,否定地调整骆驼毛的织物发信号。VPS23A 与 PYR/PYL/RCAR-type 骆驼毛的织物受体和提高的 VPS23A 的混乱有 epistatic 关系在在骆驼毛的织物处理下面表明小径的 ABA 的关键 kinase OST1 的活动。而且, VPS23A 与 PYR1/PYLs 交往,连接 K63 的 diubiquitin,和 PYL4 在 vivo 拥有连接 K63 的 ubiquitinated 修正。进一步的分析表明 VPS23A 影响 PYR1 和 PYL4 的稳定性的 subcellular 本地化。一起拿,我们的结果建议 VPS23A 经由调停液泡的降级影响 PYR1/PYL4,提供两个的先进理解在植物荷尔蒙发信号的骆驼毛的织物受体和 ESCRT 的周转。Feifei Yu Lijuan Lou Miaomiao Tian Qingliang Li Yanglin Ding Xiaoqiang Cao Yaorong Wu Borja Belda-Palazon Pedro L. Rodriguez Shuhua Yang Qi Xie 2016Molecular Plant2016,9,12:17
3Safety and superior immunogenicity of heterologous boosting with an RBD-based SARS-CoV-2 mRNA vaccine in Chinese adults显示文摘Dear Editor,To May 2022,the COVID-19 pandemic has claimed more than 6.28 million lives,with more than 524 million confirmed cases worldwide.The recent emergence of highly transmissible Omicron variant of severe acute respiratory syndrome coronavirus 2(SARSCoV-2)has triggered another major surge in both confirmed cases and deaths.1 Ten COVID-19 vaccines have been approved by the World Health Organization(WHO)for emergency use,including the two mRNA vaccines,BNT162b2 and mRNA-1273,and two Chinese inactivated vaccines,CoronaVac and BBIBP-CorV.However,the rapid waning of vaccine-induced virus-neutralizing antibody titers and the continuous emergence of variants of concern(VOCs),including Alpha,Beta,Delta and Omicron,have created unprecedented challenges in the eradication of COVID-19 pandemic.2–4.Xiaoqiang Liu Yuhua Li Zhongfang Wang Shouchun Cao Weijin Huang Lin Yuan Yi-Jiao Huang Yan Zheng Jingjing Chen Bo Ying Zuoyun Xiang Jin Shi Jincun Zhao Zhen Huang Cheng-Feng Qin 2022Cell Research2022,32,8:5
4Effect of the benzene ring of the dispersant on the rheological characteristics of coal-water slurry:Experiments and theoretical calculations显示文摘In this study,low-rank coal-water slurry(LCWS)was prepared using polyoxyethylene dodecylphenol ether(PDPE)and polyoxyethylene lauryl ether(PLE),respectively.A combination of experiments and simulations was used to investigate the pulping properties and microscopic mechanism of the LCWS samples prepared using the two agents,so as to explore the influence of benzene ring on the performance of dispersant.The results of the LCWS preparation experiments revealed that the pulp-forming performance of PDPE exceeded that of PLE.When LCWS concentration is 62%,64%,and 66%,the apparent viscosity corresponding to PDPE is 247.80,504.17,and 653.10 mPa·s,and the apparent viscosity corresponding to PLE is 548.10,1470.61,and 1549.98 mPa·s,respectively.The C_(1000)(When the apparent viscosity is 1000 mPa·s,the corresponding concentration of LCWS is defined as C_(1000))values of PDPE and PLE are 67.60%and 62.95%,respectively.In addition to the van der Waals forces and hydrogen bonds between the PDPE and/or PLE molecules and coal,the benzene rings of PDPE presentπ-πstacking effect with the aromatic rings of coal.That could facilitate and strengthen the adsorption of PDPE on coal,which would be conducive to further improving the dispersion of coal particles.The two dispersants have no significant difference in effect on the pyrolysis of LCWS.The simulation results indicated that the times for PDPE and PLE molecules to reach flat adsorption state on coal are approximately 290 and 565 ps,respectively.The self-diffusion coefficient(D)of the PDPE and PLE on coal is 3.16 x 10^(-6)and6.57×10^(-6)m~2/s,respectively,and their interaction energies with coal are 785.71 and 648.60 kcal/mol,respectively.The results of the simulation calculations demonstrated that PDPE adsorbed on coal easier than PLE,and its binding is more stable than that of PLE owing to theπ-πstacking effect,which is conducive to uniform dispersion of coal in solution.The simulation results confirmed the experimental results.Lin Li Chuandong Ma Shanpei Hu Meng He Hao Yu Qingbiao Wang Xiaoqiang Cao Xiaofang You 2021International Journal of Mining Science and Technology2021,31,3:4
5ESCRT-I Component VPS23A Is Targeted by E3 Ubiquitin Ligase XBAT35 for Proteasome-Mediated Degradation in Modulating ABA Signaling显示文摘A myriad of abiotic stress responses in plants are controlled by abscisic acid(ABA)signaling.ABA receptors can be degraded by both the 26S proteasome pathway and vacuolar degradation pathway after processing via the endosomal sorting complex required for transport(ESCRT)proteins.Despite being essential for ABA signaling,the upstream regulators of ESCRTs remain unknown.Here,we report that the ESCRT-I component VPS23A is an unstable protein that is degraded via the ubiquitin-proteasome system(UPS).The UEV domain of VPS23A physically interacts with the two PSAP motifs of XBAT35,an E3 ubiquitin ligase,and this interaction results in the deposition of K48 polyubiquitin chains on VPS23A,marking it for degradation by 26S proteasomes.We showed that XBAT35 in plants is a positive regulator of ABA responses that acts via the VPS23A/PYL4 complex,specifically by accelerating VPS23A turnover and thereby increasing accumulation of the ABA receptor PYL4.This work deciphers how an ESCRT component is regulated in plants and deepens our understanding of plant stress responses by illustrating a mechanism whereby crosstalk between the UPS and endosome-vacuole-mediated degradation pathways controls ABA signaling.Feifei Yu Xiaoqiang Cao Guangchao Liu Qian Wang Ran Xia Xiangyun Zhang Qi Xie 2020Molecular Plant2020,13,11:4
6A Near Infrared Cyanine-Based Fluorescent Probe for Highly Selectively Detecting Glutathione in Living Cells显示文摘包含 thiol 组的氨基酸在把生物氧化作为减小平衡起重要作用。由于 biothiols 的重要细胞的功能,开发有效方法检测 biothiols 在是必要的复杂化生物系统。在这个工作,我们发展了一基于花青荧光灯探查作为一个检测的组利用 thioether,它出现了荧光灯“刺激”向 GSH 和它的反应能被用作 biomarker 决定细胞的 GSH。Xiaole Sheng Dan Chen Meijiao Cao Yufeng Zhang Xie Han Xiaoqiang Chen Shenghua Liu Haiyan Chen Jun Yin 2016Chinese Journal of Chemistry2016,34,6:3
7Biomarkers of aging显示文摘Aging biomarkers are a combination of biological parameters to(i)assess age-related changes,(ii)track the physiological aging process,and(iii)predict the transition into a pathological status.Although a broad spectrum of aging biomarkers has been developed,their potential uses and limitations remain poorly characterized.An immediate goal of biomarkers is to help us answer the following three fundamental questions in aging research:How old are we?Why do we get old?And how can we age slower?This review aims to address this need.Here,we summarize our current knowledge of biomarkers developed for cellular,organ,and organismal levels of aging,comprising six pillars:physiological characteristics,medical imaging,histological features,cellular alterations,molecular changes,and secretory factors.To fulfill all these requisites,we propose that aging biomarkers should qualify for being specific,systemic,and clinically relevant.Aging Biomarker Consortium Hainan Bao Jiani Cao Mengting Chen Min Chen Wei Chen Xiao Chen Yanhao Chen Yu Chen Yutian Chen Zhiyang Chen Jagadish K Chhetri Yingjie Ding Junlin Feng Jun Guo Mengmeng Guo Chuting He Yujuan Jia Haiping Jiang Ying Jing Dingfeng Li Jiaming Li Jingyi Li Qinhao Liang Rui Liang Feng Liu Xiaoqian Liu Zuojun Liu Oscar Junhong Luo Jianwei Lv Jingyi Ma Kehang Mao Jiawei Nie Xinhua Qiao Xinpei Sun Xiaoqiang Tang Jianfang Wang Qiaoran Wang Siyuan Wang Xuan Wang Yaning Wang Yuhan Wang Rimo Wu Kai Xia Fu-Hui Xiao Lingyan Xu Yingying Xu Haoteng Yan Liang Yang Ruici Yang Yuanxin Yang Yilin Ying Le Zhang Weiwei Zhang Wenwan Zhang Xing Zhang Zhuo Zhang Min Zhou Rui Zhou Qingchen Zhu Zhengmao Zhu Feng Cao Zhongwei Cao Piu Chan Chang Chen Guobing Chen Hou-Zao Chen Jun Chen Weimin Ci Bi-Sen Ding Qiurong Ding Feng Gao Jing-Dong JHan Kai Huang Zhenyu Ju Qing-Peng Kong Ji Li Jian Li Xin Li Baohua Liu Feng Liu Lin Liu Qiang Liu Qiang Liu Xingguo Liu Yong Liu Xianghang Luo Shuai Ma Xinran Ma Zhiyong Mao Jing Nie Yaojin Peng Jing Qu Jie Ren Ruibao Ren Moshi Song Zhou Songyang Yi Eve Sun Yu Sun Mei Tian Shusen Wang Si Wang Xia Wang Xiaoning Wang Yan-Jiang Wang Yunfang Wang Catherine CL Wong Andy Peng Xiang Yichuan Xiao Zhengwei Xie Daichao Xu Jing Ye Rui Yue Cuntai Zhang Hongbo Zhang Liang Zhang Weiqi Zhang Yong Zhang Yun-Wu Zhang Zhuohua Zhang Tongbiao Zhao Yuzheng Zhao Dahai Zhu Weiguo Zou Gang Pei Guang-Hui Liu 2023Science China(Life Sciences)2023,66,5:2
824-h residual urine volume at hemodialysis initiation: A possible predictor for acute ischemic stroke incurrence in hemodialyis patients显示文摘Yuemei Chen Hong Liu Jianzhou Zou Yuxing Ge Jie Teng ShaoWei Xu WenLv Lv Zhonghua Liu Yan Xu XueSen Cao Bo Shen XiaoQiang Ding 2012Clinical Neurology and Neurosurgery2012,,:1
9Performance evaluation of a novel high durability epoxy asphalt concrete for bridge deck pavements 显示文摘CAO Xinsong YANG Xiaoqiang DUAN Baodong etc 2014Applied Mechanics & Materials2014,,:1
10Study of the characteristics of rocket-triggered lightning energetic radiation and its relationships with the discharge parameters显示文摘Through the use of the independently developed Thunderstorm Energetic Radiation Observation System(TEROS),observation experiments of rocket-triggered lightning energetic radiation(RLER)were conducted for the first time at the Field Experiment Base on Lightning Sciences,China Meteorological Administration from May 2021 to July 2021.A total of 17 X-ray bursts were detected during all of the 22 leader/return strokes.In this study,the energy,time,and direction characteristics of Xray burst and its relationships with the corresponding discharge parameters,such as the return stroke peak current,half-peak width,rise time,and interstroke time interval,as well as the associated physical processes,are analyzed and discussed.Results showed that energetic radiation is ubiquitous in triggered lightning and is closely related to the last downward leader phase before the return stroke.The photon energies were concentrated in tens to hundreds of ke V,and the average duration of RLER was approximately 27μs.Moreover,RLER exhibited directional property inconsistent with a vertical downward beam,which may be related to the development orientation of the lightning leader.The intensity of RLER was positively correlated with the return stroke peak current,indicating that it directly depends on the lightning intensity,but it would be modulated by the lightning channel conditions.The 17 RLER events showed 3 different time distribution patterns,namely,discrete,continuous,and discrete/continuous pulses,of which the discharge parameters were also different.The discrete pulse event had the longest duration,a small half-peak width,and a long interstroke time interval.Furthermore,all of these events occurred during the last several leader/return strokes.The continuous pulse event had a short duration and a small peak current.The discrete/continuous pulse event had a moderate duration and a large half-peak width and peak current.These three distinct time distribution patterns may be determined by different development types of lightning leaders.Our observations support the leader high-field runaway mechanism.Xiong ZHANG Xiaoqiang LI Yang ZHANG Baofeng CAO Yi ZHENG Rubin JIANG Peng LI Hongbo ZHANG Weitao LYU 2023Science China Earth Sciences2023,66,3:1
11Effects 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
12Design and experiment of the comb-brush harvesting machine with variable spacing for oil-tea camellia fruit显示文摘Oil-tea camellia tree is an important oil plant in China that has long flexible branches.The most challenging feature for the mechanized harvest of oil-tea fruits is that its flower and fruit grow synchronously.In order to improve the harvesting efficiency and avoid damaging the flower bud,a hand-held fruit harvesting machine with a variable spacing comb brush was proposed.The harvesting machine can generate three kinds of actuation to detach fruit when it runs.The main actuation results from the brushing of multiple comb fingers.The other two kinds of actuation result from the beating of comb fingers on the fruits and the branches.The finger spacing of the comb brush can be adjusted consequently through moving the spacing adjusting crossbar.Hence,when the finger spacing is smaller than the diameter of the oil-tea fruit,the fruit is brushed off,but the flower bud and leaf pass through the finger gap.When the finger spacing is bigger than the fruit diameter,the fruit stuck between the fingers is loosened to ensure the continuous operation of the machine.Nylon was used as the material of the brush finger to avoid damage,which can also reduce the overall weight.The dynamic simulation of the harvesting machine was carried out with ADAMS,and the acceleration of the front end of the comb finger and the variation of the finger spacing were analyzed.The prototype of the harvesting machine was built and tested in the field.Field experiment results showed that when the speed of the comb finger drive shaft was 480 r/min,the average harvesting percentage of oil-tea fruit was 80%,and the flower bud was seldom detached,which met the working requirements of oil-tea fruit harvesting.Xiaoqiang Du Tengfei Shen Lijun Zhao Guofeng Zhang Anguo Hu Shenggao Fang Yongqing Cao Xiaohua Yao 2021International Journal of Agricultural and Biological Engineering2021,14,1:1
13Effects of ultraviolet radiation B (UV-B) on photosynthesis of natural phytoplankton assemblages in a marine bay in Southern China显示文摘Solar ultraviolet radiation B (UVB) is known to have inhibitive effects on phytoplankton photosynthesis. UVB light decreases rapidly with increasing depth in the water column and exerts different degrees of UVB inhibitive effects on phytoplankton photosynthesis. In this study, the objectives were to quantify effects of UVB on phytoplankton photosynthesis and quantum yield, and to examine UVB effects on phytoplankton photosynthesis when light varies. The insitu experiments were conducted in Da Ya Bay, which is a semienclosed area in the subtropical South China. The results showed a significant reduction of photosynthetic rates and quantum yield in the presence of UVB. Maximum photosynthetic rates (Pmax) and maximum quantum yield (Φmax) were 11%-22% and 17%-49% less under solar radiation with UVB than without UVB. A simplified model was developed to describe the UVB biologically effective fluence rate (E*inh) as an exponential decay function of depth. Light-shift experiments, in which water samples from the surface and at depth of 4 m were divided into several subsamples, and each subsamples were then incubated at different depths with and without UVB in the water column, showed that phytoplankton from the deeper water (4 m) had more inhibitive rates by UVB than that from the surface when exposed to the same light condition.YUAN XiangCheng YIN KeDong ZHOU WeiHua CAO WenXi XU XiaoQiang ZHAO Di 2007Chinese Science Bulletin2007,52,4:1
14Study of sodium lignosulfonate prepare low-rank coal-water slurry:Experiments and simulations显示文摘The effect of sodium lignosulfonate(SL)as additive on the preparation of low-rank coal-water slurry(LCWS)was studied by experiments and molecular dynamics(MD)simulation s.The experimental results show that the appropriate amount of additives is beneficial to reduce the viscosity of LCWS and increase the slurry concentration.Adsorption isotherm studies showed that SL conforms to single-layer adsorption on the coal surface,andΔG_(ads)^(0) was negative,proving that the reaction was spontaneous.Zeta potential measurements showed that SL increased the negative charge on coal.FTIR scanning and XPS wide-range scanning were performed on the coal before and after adsorption,and it was found that the content of oxygen functional groups on coal increased after adsorption.Simulation results show that when a large number of SL molecules exist in the solution,some SL molecules will bind to hydrophobic hydrocarbon groups on coal.The rest of the SL molecule s,their hydrophobic alkyl tails,come into contact with each other and aggregate in solution.The agglomeration of SL molecules and the surface of coal with static electricity will also produce electrostatic interaction,which is conducive to the even dispersion of coal particles.The results of mean square displacement(MSD)and self-diffusion coefficient(D)show that the addition of SL reduces the diffusion rate of water molecules.Simulation results correspond to experimental results,indicating that MD simulation is accurate and feasible.Lin Li Chuandong Ma Mengyu Lin Mingpu Liu Hao Yu QingbiaoWang Xiaoqiang Cao Xiaofang You 2021Chinese Journal of Chemical Engineering2021,34,1:1
15Electrochemical performance of NiCl_(2) with Br-free molten salt electrolyte in high power thermal batteries显示文摘NiCl_(2) with high theoretical voltage and thermal decomposition temperature attracts much attention as cathode material for thermal batteries with the requirement of high power density, high energy density and long work time. Unfortunately, the practical utilization of thermal batteries with NiCl_(2) cathode is limited by their poor electrochemical performance under large current, even with the conventional Li F-Li Cl-Li Br all-lithium molten salt electrolyte which proposes ultrahigh lithium ion conductivity. In this work, an unexpected ionic exchange reaction between NiCl_(2) and Li Br in Li F-Li Cl-Li Br was found, which would be the main reason for the poor electrochemical behavior of thermal batteries with NiCl_(2) cathode and Li F-Li Cl-Li Br molten salt. On this basis, Li F-Li Cl-Li_(2)SO_(4), another all-lithium molten salt free of Li Br, was investigated as the new electrolyte for NiCl_(2) cathode. For the single cell of Li(Si)/Li F-Li Cl-Li_(2)SO_(4)/NiCl_(2), a discharge capacity of 377 mA h g^(-1)(with a cut-off voltage of 1.2 V) was achieved with large current density(500 mA cm^(-2)) applied at 520℃, which is almost twice of that of Li(Si)/Li F-Li Cl-Li Br/NiCl_(2)(190 mA h g^(-1)) at the same conditions.CAO Yong LI Jian YANG Peng WEI KaiYuan MA ShiPing ZHANG XiaoQiang WU MeiFen LIU XiaoJiang CUI YanHua WEN ZhaoYin 2021Science China(Technological Sciences)2021,64,1:1
16Thoughts on Pairing Assistance to Tibet for Promoting Agricultural High-quality Development in Southern Tibet from the Perspective of Agricultural Power显示文摘In the new era,there is an urgent need to further promote pairing assistance to Tibet,promote the simultaneous construction of a strong agriculture in Tibet and the China's Mainland,and compose a Chinese-style modernization.Southern Tibet,located in the southeastern part of the Tibet Autonomous Region,includes Shannan City and Nyingchi City,is a region assisted by four provincial partners including Hubei Province.This paper introduces the agricultural environment in southern Tibet,studies its agricultural characteristics,and analyzes the main issues of its pairing assistance.Taking forging the strong consciousness of the Chinese national community as the main line,the paper explores strategies for promoting agricultural high-quality development in southern Tibet through pairing assistance to Tibet from the perspective of agricultural power,and proposes some strategies,such as inheriting agricultural cultural heritage,promoting the upgrading of modern seed industry,enhancing the characteristic advantages of highland barley(naked barley)and animal husbandry industries,and developing edible fungi and cold water fish industries.Zhiguo SUN Li GAO Yuanpeng SUN Guangchao CAO Xinying ZHOU Xiaoqiang LI 2024Asian Agricultural Research2024,16,3:0
17μ-opioid receptor agonist facilitates circulating tumor cell formation in bladder cancer via the MOR/AKT/Slug pathway:a comprehensive study including randomized controlled trial显示文摘Background:μ-opioid receptor agonists(MORAs)are indispensable for analgesia in bladder cancer(BC)patients,both during surgery and for chronic pain treatment.Whether MORAs affect BC progression and metastasis remains largely unknown.This study focused on the effects of MORAs on the formation of circulating tumor cells(CTCs)in BC and aimed to provide potential therapeutic targets,which would retain the pain-relieving effects of MORAs in BC patients without sacrificing their long-term prognosis.Methods:Different preclinical models were used to identify the effects of MORAs on the progression of BC.A novel immunocapture microfluidic chip was utilized to analyze whether MORAs affected the number of CTCs in mouse models and clinical BC patients.Bioinformatic analyses,total transcriptome sequencing,and molecular biology methods were then used to investigate the underlying mechanisms in these models and in BC cell lines.Results:Mouse models of hematogenous metastasis and in situ BC demonstrated that tumor metastasis was significantly increased after MORA treatment.A significant increase in the number of mesenchymal and/or epithelial CTCs was detected after MORA treatment in both the mouse models and clinical trial patients.Mechanistically,MORAs facilitated the formation of CTCs by activating the MOR/PI3K/AKT/Slug signaling pathway,hereby promoting the epithelialmesenchymal transition(EMT)of BC cells,as knockdown of MOR,Slug or blockade of PI3K inhibited the EMT process and CTC formation.Conclusion:MORAs promoted BC metastasis by facilitating CTC formation.The EMT-CTC axis could be targeted for preventive measures during MORA treatment to inhibit the associated tumormetastasis or recurrence in BC patients.Xiaoqiang Wang Song Zhang Di Jin Jiamei Luo Yumiao Shi Yiqi Zhang Lingling Wu Yanling Song Diansan Su Zhiying Pan Haige Chen Ming Cao Chaoyong Yang Weifeng Yu Jie Tian 2023Cancer Communications2023,43,3:0
18Genetic characterizations and molecular epidemiology of human echovirus 30 isolated from Ningxia,China显示文摘In October 2017,a small outbreak of echovirus 30(E30)associated with aseptic meningitis in nine cases occurred at a primary school in the Ningxia Hui Autonomous Region.That year,we observed a significant increase in E30 levels in an acute flaccid paralysis(AFP)case surveillance system.To investigate their phylogenetic relationships,we determined the whole genomic sequences of 12 strains isolated from aseptic meningitis cases,AFP cases,and healthy children.We found that the E30 strains circulating in Ningxia belong to two lineages(H and J).The strains isolated in 2010,2012,and 2016 belonged to the H lineage.In 2017,a new lineage,J,emerged as the dominant lineage.Phylogenetic trees were constructed based on the whole genome andP1,P2,andP3 regions;clustering with other types of enterovirus species B was found,suggesting that recombination events had occurred.The recombination sites were mainly in regions2B,2C,and3D.This study confirmed that the E30 strains in Ningxia in 2010,2012,and 2016 had different recombination patterns and were recombined with different enteroviruses.The 2017 epidemic E30 originated from another new lineage with a complex recombination pattern and formed an independent transmission chain in Ningxia.Fang Yuan Xinfeng Wei Xueping Ma Jiangtao Ma Xuemin Ma Xiaoqiang Sun Min Cao Juan Zhou Wei Zhang Hui Chen Rui Wang Jichen Li Qiang Sun 2023Biosafety and Health2023,5,6:0
19Canopy structure:An intermediate factor regulating grassland diversity-function relationships under human disturbances显示文摘Grasslands are one of the largest coupled human-nature terrestrial ecosystems on Earth,and severe anthropogenic-induced grassland ecosystem function declines have been reported recently.Understanding factors influencing grassland ecosystem functions is critical for making sustainable management policies.Canopy structure is an important factor influencing plant growth through mediating within-canopy microclimate(e.g.,light,water,and wind),and it is found coordinating tightly with plant species diversity to influence forest ecosystem functions.However,the role of canopy structure in regulating grassland ecosystem functions along with plant species diversity has been rarely investigated.Here,we investigated this problem by collecting field data from 170 field plots distributed along an over 2000 km transect across the northern agro-pastoral ecotone of China.Aboveground net primary productivity(ANPP)and resilience,two indicators of grassland ecosystem functions,were measured from field data and satellite remote sensing data.Terrestrial laser scanning data were collected to measure canopy structure(represented by mean height and canopy cover).Our results showed that plant species diversity was positively correlated to canopy structural traits,and negatively correlated to human activity intensity.Canopy structure was a significant indicator for ANPP and resilience,but their correlations were inconsistent under different human activity intensity levels.Compared to plant species diversity,canopy structural traits were better indicators for grassland ecosystem functions,especially for ANPP.Through structure equation modeling analyses,we found that plant species diversity did not have a direct influence on ANPP under human disturbances.Instead,it had a strong indirect effect on ANPP by altering canopy structural traits.As to resilience,plant species diversity had both a direct positive contribution and an indirect contribution through mediating canopy cover.This study highlights that canopy structure is an important intermediate factor regulating grassland diversity-function relationships under human disturbances,which should be included in future grassland monitoring and management.Xiaoxia Zhao Yuhao Feng Kexin Xu Mengqi Cao Shuya Hu Qiuli Yang Xiaoqiang Liu Qin Ma Tianyu Hu Maggi Kelly Qinghua Guo Yanjun Su 2023Fundamental Research2023,3,2:0
20Effects of Solution Chemistry Conditions and Adsorbent Surface Properties on Adsorption of Ni(Ⅱ) on Laiyang Bentonite显示文摘The effects of solution chemistry conditions and adsorbent surface properties on the adsorption of Ni(II) on Laiyang bentonite were investigated via the batch technique. Potentiometric and mass titration techniques were employed in the batch experimental methods, and the results showed that the point of zero net proton charge(PZNPC) of bentonite at different ionic strength denoted p HPZNPC to be 8.2±0.1. The removal of Ni(II) from the solution increased with an increasing bentonite dosage, with the maximum removal efficiency equating up to 99%. The adsorption of Ni(II) on bentonite increased with an increasing p H value at a p H value of <8.5, and reached a Ni(II) removal efficiency of >99% at a p H value of >10.2. The Ni(II) adsorption performance exhibited different responses to cations(K+, Na+) but was not influenced by the background anions(NO3-, Cl-, and Cl O4-). The adsorption of Ni(II) was dominated by the outer-sphere surface complexation and ion exchange with Na+/H+ on bentonite surface at low p H value, whereas the inner-sphere surface complexation and surface precipitation were the main adsorption mechanisms at high p H value. The adsorption isotherms of Ni(II) on bentonite can be described well by the Langmuir model. The thermodynamic parameters of adsorption, including the Gibbs free energy, the enthalpy change, and the entropy change, at different temperatures indicated that the adsorption of Ni(II) on bentonite was endothermic and spontaneous.Cao Xiaoqiang Yan Bingqi Xue Jianliang Wang Qian Wang Yaping Huang Yongqing Zhang Yan Lyu Xianjun 2016China Petroleum Processing & Petrochemical Technology2016,18,3:0
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