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A retrieval and validation method for shelterbelt vegetation fraction

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Journal of Forestry Research 2013年第2期24卷 357-360页

作者： DENG Rong-xin WANG wen-juan li Ying ZHAO Dong-bao Institute of Resources and Environment North China Institute of Water Resources and Electric Power Department of Resources and Environmental Sciences Henan University of Economics and Law

Shelterbelts are important in defending against natural disaster and maintaining ecological balances in farmland. Understanding of the shelterbelt vegetation fraction is fundamental to regional research of shelterbelts using remote sensing. We used SPOT5 imagery with 10×10m spatial resolution in combination with knowledge of the characteristics of shelterbelts to develop a method for retrieval of the vegetation fraction of shelterbelts by the pixel un-mixing model. We then used the method to retrieve values for shelterbelts in study area. By combining the parameters of photographic images with characteristics of shelterbelts, we developed a method for measuring the vegetation fraction of shelterbelts based on an advanced photographic method. We then measured the actual values to validate the retrieval result. The multiple correlation coefficients between the retrieved and measured values were 0.715. Our retrieval and measuring methods presented in this paper accurately reflect field conditions. We suggest that this method is useful to describe shelterbelt structure using remote sensing.

关键词： shelterbelt vegetation fraction retrieval vegetation fraction measuring remote sensing

Advanced wastewater treatment with microalgae-indigenous bacterial interactions

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Environmental Science and Ecotechnology 2024年第4期20卷 198-207页

作者： Xue li Shengnan li Peng xie xi Chen Yuhao Chu Haixing Chang Jian Sun Qing li Nanqi Ren Shih-Hsin Ho State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin150090PR China College of Chemistry and Chemical Engineering Chongqing University of TechnologyChongqing400054PR China Central Southern China Municipal Engineering Design and Research Institute Co. LtdWuhan430010PR China

Microalgal-indigenous bacterial wastewater treatment(MBWT)emerges as a promising approach for the concurrent removal of nitrogen(N)and phosphorus(P).Despite its potential,the prevalent use of MBWT in batch systems limits its broader ***,the success of MBWT critically depends on the stable self-adaptation and synergistic interactions between microalgae and indigenous bacteria,yet the underlying biological mechanisms are not fully *** we explore the viability and microbial dynamics of a continuous flow microalgae-indigenous bacteria advanced wastewater treatment system(CFMBAWTS)in processing actual secondary effluent,with a focus on varying hydraulic retention times(HRTs).The research highlights a stable,mutually beneficial relationship between indigenous bacteria and *** and indigenous bacteria can create an optimal environment for each other by providing essential cofactors(like iron,vitamins,and indole-3-acetic acid),oxygen,dissolved organic matter,and *** collaboration leads to effective microbial growth,enhanced N and P removal,and energy *** study also uncovers crucial metabolic pathways,functional genes,and patterns of microbial ***,the effluent NH4 t-N and P levels complied with the Chinese national Class-II,Class-V,Class-IA,and Class-IB wastewater discharge standards when the HRT was reduced from 15 to 6 *** results,including the highest rates of CO_(2) fixation(1.23 g L^(-1)),total energy yield(32.35 kJ L^(-1)),and the maximal lipid(33.91%)and carbohydrate(41.91%)content,were observed at an HRT of 15 ***,this study not only confirms the feasibility of CFMBAWTS but also lays a crucial foundation for enhancing our understanding of this technology and propelling its practical application in wastewater treatment plants.

关键词： Continuous flow systems Microalgal-indigenous bacterial interactions Advanced treatment Self-adaptation mechanisms Nutrient removal mechanisms

Multi-stage sizing approach for development of utility-scale BESS considering dynamic growth of distributed photovoltaic connection

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Journal of Modern Power Systems and Clean Energy 2016年第4期4卷 554-565页

作者： Zao TANG Youbo liU Junyong liU Ran li lili wen Guofang ZHANG School of Electrical Engineering and Information Sichuan UniversityChengdu 610065China University of Bath BathUK State Grid Sichuan Electric Power Company Chengdu 610041China

The battery energy storage system(BESS)is regarded as one of the most promising address operational challenges caused by distributed *** paper proposes a novel multi-stage sizing model for utility-scale BESS,to optimize the BESS development strategies for distribution networks with increasing penetration levels and growth patterns of dispersed photovoltaic(PV)***,an integrated model is established in order to accommodate dispersed PVs in short-term operation scale while facilitating appropriate profits in long-term planning *** reduction is adopted to extract the most representative operating scenarios with PVs and BESS integration,which is able to decrease the computing complexity caused by scenario *** numerical studies on IEEE 69-bus distribution system verify the feasibility of the proposed multi-stage sizing approach for the utility-scale BESS.

关键词： Multi-stage sizing BESS Growth pattern Long-time planning Short-term scheduling

Every Weakly Compact Set Can Be Uniformly Embedded into a Reflexive Banach Space

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Acta Mathematica Sinica,English Series 2009年第7期25卷 1109-1112页

作者： li xin CHENG Qing Jin CHENG Zheng Hua LUO wen ZHANG Department of Mathematics Xiamen University Xiamen 361005 P. R. China

Based on an application of the Davis-Figiel-Johnson-Pelzyski procedure, this note shows that every weakly compact subset of a Banach space can be uniformly embedded into a reflexive Banach space. As its application, we present the recent renorming theorems for reflexive spaces of Odell- Schlumprecht and Hajek-Johanis can be extended and localized to weakly compact convex subsets of an arbitrary Banach space.

关键词： Banach space weakly compact set renorming

Asymmetric Synthesis of (R)-and (S)-Moprolol

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Chemical Research in Chinese Universities 2008年第6期24卷 747-751页

作者： WANG Zhao-yang WANG Yan SUN li-wen ZHU Jin-tao Department of Chemistry Zhejiang Sci-Teeh University Hangzhou 310018 P. R. China Institute of Materia Mediea Zhejiang Aeademy of Medical Science Hangzhou 310013 P. R. China

A simple and effective procedure for the enantioselective synthesis of （R）- and （S）-moprolol was described. The key step was the asymmetric synthesis of enantiopure （R）- and （S）-guaifenesin, which were synthesized from enantioenriched （R）-3-chloro-l,2-propanediol and （S）-epichlorohydrin via kinetics of hydrolysis resolution of racemic epichlorohydrin by chiral Salen-Co^Ⅲ complex. The e.e. values of both the optical compounds were above 98%, and the chemical structures of the target compounds were confirmed by ^1H NMR, ^13C NMR, IR, and MS.

关键词： (R)- and (S)-Moprolol (R)- and (S)-Guaifenesin Asymmetric synthesis

NDRG4 prevents cerebral ischemia/reperfusion injury by inhibiting neuronal apoptosis

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Genes & Diseases 2019年第4期6卷 448-454页

作者： Lan wen Lei liu linyan Tong Jinfang li Keming Zhang Qinbin Zhang Changqing li Department of Neurology Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China Department of Neurology First Affiliated Hospital of Chengdu Medical CollegeChengdu 600000China

Cerebral ischemia is a major cause of mortality and long-term morbidity ***4 has been shown to protect against cerebral ischemia,although the underlying mechanisms remain largely *** we found that NDRG4 expression was decreased in the brain tissues of ischemia/reperfusion(IR)rats,indicating increased apoptosis rates among cerebral ***4 restoration via an adenovirus significantly attenuated cerebral infarct sizes and impairments in IR ***,adenovirus-mediated NDRG4 inhibited cell apoptosis in the brains of IR rats and regulated the expression of Bcl-2,Bax,caspase-3,and ***,we found that NDRG4 increased expression of BDNF,which is strongly related to cerebral ischemia and cellular ***,our findings demonstrate that NDRG4 protects cerebral IR injury by inhibiting cell apoptosis and regulates cerebral cell apoptosis by increasing BDNF *** results suggest that NDRG4 may be a therapeutic target for IR treatment.

关键词： Apoptosis BDNF Ischemia NDRG4 Reperfusion injury

Jiaqi Ma, China CDC’s Chief Expert of Health Information

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China CDC weekly 2020年第38期2卷 749-750页

作者： Peter Hao Nankun liu Zhenjun li Jingjing xi Feng Tan Chinese Center for Disease Control and Prevention BeijingChina.

Jiaqi Ma is the Chief Expert of Health Information of China CDC and has been engaged in public health informatics for more than 30 *** a leading figure,he put forward creative information construction concepts at multiple key periods and led his team to achieve the establishment of the Chinese Information System for Disease Control and Prevention(CISDCP),which represented a major development of China’s public health informatics.

关键词： Expert CDC Health

Geographical range evolution of the genus Polypedates(Anura:Rhacophoridae)from the Oligocene to present

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Zoological Research 2021年第1期42卷 116-123页

作者： li-Mei Yuan xi-ling Deng De-Chun Jiang Sebastian Klaus Nikolai LOrlov Kong Yang Jia-Tang li Institute of Qinghai-Tibetan Plateau Southwest Minzu UniversityChengduSichuan 610041China CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengduSichuan 610041China Department of Ecology and Evolution J.W.Goethe-UniversitätFrankfurt/M.Hessen 60438Germany Zoological Institute Russian Academy of SciencesSt.Petersburg 199034Russia Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesNay Pyi Taw 05282Myanmar CAS Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunmingYunnan 650223China University of Chinese Academy of Sciences BeijingChina

DEAR EDITOR,Currently,the genus Polypedates comprises 26 species distributed in South,Southeast,and East *** of their relatively low dispersal capability and intolerance to seawater,this genus is ideal for the study of terrestrial range evolution that extends into the island archipelagos of southeastern *** this study,based on data compiled for Polypedates from previous studies and partial mitochondrial and nuclear genes collected in this study,we performed systematic biogeographical *** confirmed a Sundaland origin for the extant genus and showed northward dispersal into mainland Southeast Asia and Asia,which coincided with the timing of paleoclimatic change from the Oligocene to Middle *** fluctuations had a profound impact on species diversification within the genus ***,the Red River did not mediate species exchange between Southeast Asia and mainland Asia until the end of the Miocene,with the sudden onset of northward dispersal in several clades independently at that ***,the lineage of widespread insular *** strongly supports the hypothesis of terrestrial connection between island archipelagos of Southeast Asia during the Mid-Pleistocene paleoclimate *** biogeographical analysis also supports the recent introduction of *** to the Philippines and Ryukyus,as previously suggested.

关键词： mainland northward evolution

An UPLC-MS/MS method for simultaneous determination of multiple constituents in Guizhi Fuling capsule with ultrafast positive/negative ionization switching

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Chinese Journal of Natural Medicines 2018年第4期16卷 313-320页

作者： ZHANG Rong-Hua li Chao-Ran YANG Hua li Meng-Ning Karl W.K.Tsim li Ping GAO wen State Key Laboratory of Natural Medicines School of Traditional Chinese Pharmacy China Pharmaceutical University School of Traditional Chinese Medicine Guangdong Pharmaceutical University Division of life Science and Center for Chinese Medicine The Hong Kong University of Science and Technology

Guizhi Fuling capsule(GFC), a traditional Chinese medicine(TCM) with effects of promoting blood circulation and dissipating blood stasis, has been widely used in the clinic. Because of the complex matrix and various chemical structure types, quality control of GFC remains great challenge. In the present study, an ultra performance liquid chromatography hybrid triple-quadrupole mass spectrometry(UPLC-QQQ MS) method with ultrafast positive/negative ionization switching was developed for simultaneous determination of 18 bioactive components in GFC, including methyl gallate, ethyl gallate, oxypaeoniflorin, benzoic acid, albiflorin, paeonolide, paeoniflorin, 1, 2, 3, 4, 6-pentagalloylglucose, mudanpioside C, benzoyloxypaeoniflorin, benzoylpaeoniflorin, pachymic acid, amygdalin, cinnamaldehyde, paeonol, cinnamic acid, 4-hydroxybenzoic acid, and gallic acid. Separation was performed on an Agilent Zorbax Extend–C18 column(2.1 mm × 50 mm, 1.8 μm), using a gradient elution with acetonitrile and water containing 0.1% formic acid. Cholic acid was selected as the internal standard. This newly developed method was fully validated for linearity, precision, accuracy, and stability, and then applied to quality assessment of GFC. Finally, the batch-to-batch reproducibility of GFC samples was evaluated by the cosine ration and Euclidean distance method, which showed high quality consistency. The results demonstrated that the developed method provided a reasonable and powerful manner for quality control of GFC.

关键词： Guizhi Fuling capsule(GFC) UPLC-QQQ MS Ultrafast positive/negative ionization switching Quality control