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Impacts of algal blooms on sinking carbon flux and hypoxia off the Changjiang River estuary

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Journal of Oceanology and Limnology 2023年第6期41卷 2180-2196页

作者： Zhao LI yingxin zhang Shuqun SONG Caiwen LI School of Municipal and Environmental Engineering Shandong Jianzhu UniversityJinan 250101China CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China Marine Ecology and Environmental Science Laboratory Laoshan LaboratoryQingdao 266237China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Based on 10 multidisciplinary investigations conducted from February 2015 to January 2016,the phytoplankton community and its association with ambient seawater physicochemical parameters in the Changjiang(Yangtze)River estuary(CE)and its adjacent waters were comprehensively *** total,265 taxa were identified,belonging to 5 phyla and 94 ***(63.78%)and dinoflagellates(33.21%)were the dominant *** variation of diatom abundance showed a positive relationship with the nutrient concentrations while the dinoflagellate abundance showed a negative *** algal bloom events occurred during the investigation *** Changjiang Diluted Water(CDW)induced environmental gradients in the upper layer,favoring the diatom bloom in *** invasion of the nearshore Kuroshio branch current could affect the formation of a bloom of Prorocentrum *** the blooming and senescence of phytoplankton,low dissolved oxygen(DO)and hypoxia occurred in the bottom *** bottom DO concentration displayed a significantly negative correlation with phytoplankton carbon *** present study provides straightforward evidence for the source of organic matter for oxygen consumption in the CE and its adjacent waters.

关键词： phytoplankton community structure algal blooms carbon flux hypoxia

Biosynthesis of poly-3-hydroxybutyrate with a high molecular weight by methanotroph from methane and methanol

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Journal of Natural Gas Chemistry 2008年第1期17卷 103-109页

作者： yingxin zhang Jiaying Xin Linlin Chen Hao Song Chungu Xia State Key Laboratory for Oxo Synthesis ＆ Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China College of Food Engineering Harbin University of Commerce Harbin 150076 China Graduate University of Chinese Academy of Sciences Beijing 10039 China

Poly-3-hydroxybutyrate （PHB） can be produced by various species of bacteria. Among the possible carbon sources, both methane and methanol could be a suitable substrate for the production of PHB. Methane is cheap and plentiful not only as natural gas, but also as biogas. Methanol can also maintain methanotrophic activity in some conditions. The methanotrophic strain Methylosinus trichosporium IMV3011 can accumulate PHB with methane and methanol in a brief nonsterile process. Liquid methanol （0.1%） was added to improve the oxidization of methane. The studies were carried out using shake flasks. Cultivation was performed in two stages： a continuous growth phase and a PHB accumulation phase under the conditions short of essential nutrients （ammonium, nitrate, phosphorus, copper, iron （Ⅲ）, magnesium or ethylenediamine tetraacetate （EDTA）） in batch culture. It was found that the most suitable growth time for the cell is 144 h. Then an optimized culture condition for second stage was determined, in which the PHB concentration could be much increased to 0.6 g/L. In order to increase PHB content, citric acid was added as an inhibitor of tricarboxylic acid cycle （TCA）. It was found that citric acid is favorable for the PHB accumulation, and the PHB yield was increased to 40% （w/w） from the initial yield of 12% （w/w） after nutrient deficiency cultivation. The PHB produced is of very high quality with molecular weight up to 1.5 × 10^6Da.

关键词： poly-3-hydroxybutyrate methanotrophs methane methanol cultivation biosynthesis high molecular weight

Efficient adsorption of Mn(Ⅱ) by layered double hydroxides intercalated with diethylenetriaminepentaacetic acid and the mechanistic study

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Journal of Environmental Sciences 2019年第11期31卷 56-65页

作者： Mingjie Huang yingxin zhang Wei Xiang Tao Zhou Xiaohui Wu Juan Mao School of Environmental Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Key Laboratory of Water and Wastewater Treatment(HUST) MOHURD Wuhan 430074 China

In this study,greatly enhanced Mn(Ⅱ) adsorption was achieved by as-synthesized diethylenetriaminepentaacetate acid intercalated Mg/Al layered double hydroxides (LDHs-DTPA).The adsorption capacity of LDHs-DTPA was 83.5 mg/g,which is much higher than that of LDHs-EDTA (44.4 mg/g),LDHs-Oxalate (21.6 mg/g) and LDHs (28.8 mg/g).The adsorption data of aqueous Mn(Ⅱ) using LDHs-DTPA could be well described by the pseudosecond order kinetics and Langrnuir isotherm *** study results also showed that the adsorption process of Mn(Ⅱ) by LDHs-DTPA was exothermic as indicated by the negative △H ***,based on the structural,morphological and thermostable features,as well as FT-IR and XPS characterizations of LDHs-DTPA and the pristine LDHs,the adsorption mechanism of Mn(Ⅱ) was *** carboxyl groups of DTPA were proposed to be the main binding sites for Mn(Ⅱ),and the hydroxyl groups of LDHs also played a minor role in the adsorption *** the three common regeneration reagents,0.1 mol/L Na2CO3 was the best for reusing LDHs-DTPA in Mn(Ⅱ) ***,the Mn(Ⅱ) adsorption performance could be hindered in the presence of typical inorganic ions,especially *** specific modifications of LDHs-DTPA are suggested to get more selective adsorption of Mn(ll) in practical applications.

关键词： Layered double hydroxides Diethylenetriaminepentaacetate acid (DTPA) Mn(Ⅱ) Adsorption Inorganic ions

Wearable pressure sensors based on antibacterial and porous chitosan hydrogels for full-range human motion detection

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Science China(Technological Sciences) 2024年第8期67卷 2475-2484页

作者： zhang yingxin LIU HanGuang JIN ShunYu LI YaJuan zhang Wan ZHOU Hang NIE ZanXiang HUANG Yuan School of Microelectronics Science and Technology Sun Yat-sen UniversityGuangzhou 510275China Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230022China Department of Clinical Laboratory the First Affiliated Hospital of Anhui Medical UniversityHefei 230022China School of Electronic and Computer Engineering Peking University Shenzhen Graduate SchoolShenzhen 518055China Zinergy Shenzhen Ltd. Shenzhen 518109China

Wearable pressure sensors made from conductive hydrogels hold significant potential in health ***,limited pressure range(Pa to hundreds of kPa)and inadequate antibacterial properties restrict their practical applications in diagnostic and health ***,a wearable high-performance pressure sensor was assembled using a facilely prepared porous chitosan-based hydrogel,which was constructed from commercial phenolphthalein particles as a sacrificial *** relationship between the porosity of hydrogels and sensing performance of sensors was systematically ***,the wearable pressure sensor,featuring an optimized porosity of hydrogels,exhibits an ultrawide sensing capacity from 4.83 Pa to 250 k Pa(range-to-limit ratio of 51,760)and high sensitivity throughout high pressure ranges(0.7 kPa~(-1),120–250 kPa).The presence of chitosan endows these hydrogels with outstanding antibacterial performance against *** and ***,making them ideal candidates for use in wearable *** features allow for a practical approach to monitor full-range human motion using a single device with a simple structure.

关键词： porous hydrogels antibacterial performances wearable pressure sensors full-range human motion chitosan

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Diversity and seasonal variation of marine phytoplankton in Jiaozhou Bay, China revealed by morphological observation and metabarcoding

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Journal of Oceanology and Limnology 2022年第2期40卷 577-591页

作者： Tiantian CHEN yingxin zhang Shuqun SONG Yun LIU Xiaoxia SUN Caiwen LI CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory of Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266200China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Jiaozhou Bay National Marine Ecosystem Research Station Chinese Academy of SciencesQingdao 266071China

Phytoplankton are central components of marine environments,and are major players in the production and respiration ***,their diversity and distribution patterns are still poorly understood due largely to their small sizes and inconspicuous morphology that have been determined via the application of traditional morphology methods over the past two *** better understand the composition and diversity of phytoplankton in Jiaozhou Bay,China,seasonal sampling was carried out in 2019 and samples were analyzed with morphological observations and high-throughput sequencing,from which obvious seasonal variations in phytoplankton composition and proportional abundances were *** revealed far more diversity and species richness of phytoplankton than morphological observations,especially with respect to dinofl *** were the most dominant phytoplankton group throughout the year,of which Thalassionema and Skeletonema were co-dominant in the *** dinofl agellates(***),which is often overlooked in the morphological observations,were in dominance and high diversity in the metabarcoding dataset,thus more attention should be paid to exploring the potential role of parasitic dinofl ***,chlorophyll a,and nutrient levels were the main infl uential factors on the distribution of *** study provided a comprehensive morphological and molecular description of phytoplankton and clearly demonstrated the importance of molecular technology in exploring phytoplankton ***-widespread use of molecular technology will facilitate deeper understanding of the ecological importance of the diff erent species.

关键词： phytoplankton high-throughput sequencing diversity morphological observation Jiaozhou Bay

Optimization Strategies Toward Functional Sodium-Ion Batteries

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Energy & Environmental Materials 2023年第4期6卷 332-354页

作者： Jingwei Chen Gupta Adit Lun Li yingxin zhang Daniel H.C.Chua Pooi See Lee School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China School of Materials Science and Engineering Nanyang Technological UniversitySingapore City 639798Singapore Department of Materials Science and Engineering National University of SingaporeSingapore City 117575Singapore

Exploration of alternative energy storage systems has been more than necessary in view of the supply risks haunting lithium-ion *** various alternative electrochemical energy storage devices,sodium-ion battery outstands with advantages of cost-effectiveness and comparable energy density with lithium-ion *** to the similar electrochemical mechanism,the research and development of lithium-ion batteries have forged a solid foundation for sodium-ion battery *** in sodium-ion batteries have been witnessed in terms of superior electrochemical performance and broader application ***,the strategies adopted to optimize the battery components(cathode,anode,electrolyte,separator,binder,current collector,etc.)and the cost,safety,and commercialization issues in sodium-ion batteries are summarized and *** on these optimization strategies,assembly of functional(flexible,stretchable,self-healable,and self-chargeable)and integrated sodium-ion batteries(−actuators,−sensors,electrochromic,etc.)have been *** these achievements,challenges including energy density,scalability,trade-off between energy density and functionality,cost,*** to be addressed for sodium-ion battery *** review aims at providing an overview of the up-to-date achievements in sodium-ion batteries and serves to inspire more efforts in designing upgraded sodium-ion batteries.

关键词： energy storage integration multifunctional optimization strategies sodiumion batteries

Corrigendum to “Efficient adsorption of Mn(II) by layered double hydroxides intercalated with diethylenetriaminepentaacetic acid and the mechanistic study” [J. Environ. Sci. 85 (2019) 56–65]

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Journal of Environmental Sciences 2020年第4期32卷 411-412页

作者： Mingjie Huang yingxin zhang Wei Xiang Tao Zhou Xiaohui Wu Juan Mao School of Environmental Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Water and Wastewater Treatment(HUST) MOHURDWuhan 430074China

The authors regret to inform that there were some mistakes in the part of thermodynamics studies,the calculated enthalpy,entropy and Gibbs energy were wrong due to the misunder-standing of the equilibrium constant(Kads).

关键词： thermodynamics entropy double

A Study of Some Cultural Differences between China and English- Speaking Countries

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Journal of Educational Theory and Management 2020年第2期4卷 12-18页

作者： yingxin zhang International Department Baotou Vocational&Technical CollegeBaotouInner Mongolia014035China

This paper emphasizes the importance of cultural teaching in English teaching,and discusses some cultural differences between Chinese and English from the perspective of colors,numbers,table manner,the most important ... 详细信息

关键词： Culture Difference Teaching

Gapless Genome Assembly of ZH8015 and Preliminary Multi-Omics Analysis to Investigate ZH8015's Responses Against Brown Planthopper Infestation

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Rice science 2024年第3期31卷 317-327,I0042-I0045页

作者： LI Dian DUAN Wenjing LIU Qun’en WU Weixun ZHAN Xiaodeng SUN Lianping zhang yingxin CHENG Shihua State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 310006China

Accurate genomic information is essential for advancing genetic breeding research in specific rice *** study presented a gapless genome assembly of the indica rice cultivar Zhonghui 8015(ZH8015)using Pac Bio HiFi,Hi-C,and ONT(Oxford Nanopore Technologies)ultra-long sequencing technologies,annotating 43037 gene ***,utilizing this genome along with transcriptomic and metabolomic techniques,we explored ZH8015's response to brown planthopper(BPH)*** transcriptomic sampling indicated significant changes in gene expression levels around 48 h after BPH *** analysis revealed particularly significant alterations in genes related to reactive oxygen species scavenging and cell wall *** results demonstrated marked increases in levels of several monosaccharides,which are components of the cell wall and dramatic changes in flavonoid *** association analysis identified differentially expressed genes associated with key metabolites,shedding light on ZH8015's response to BPH *** summary,this study constructed a reliable genome sequence resource for ZH8015,and the preliminary multi-omics results will guide future insect-resistant breeding research.

关键词： brown planthopper gapless genome genome assembly multi-omics Nilaparvata lugens rice