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Removal of Low-concentration Ammonia from Ambient Air by Aluminophosphates

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Chemical Research in Chinese Universities 2018年第3期34卷 480-484页

作者： LI Chunyang WU Shujie YU Guiyang YANG Xuwei LIU Gang zhang wenxiang Key Laboratory of Surface and Interface Chemistry of Jilin Province College of Chemistry Jilin University Changchun 130021 P. R. China

A series of aluminumphosphate materials was prepared and used as adsorbents for the removal of ammonia at low concentrations. The influence of various preparation parameters, including the pH value of sol, calcination temperature and molar ratio of P/A1, on the structure and surface properties as well as adsorption capacity was investigated. The results showed that large amount of P-OH present on the surface of aluminophosphates was suitable for the removal of ammonia. They were the major source of weak Br6nsted acid sites and acted as the main active centers for capturing ammonia.

关键词： Ammonia adsorption Aluminophosphate Air purification Weak acid Porous material

Discovery of bacteriopheophytin-a in lacustrine deposits from Lake Zigetang on the central Tibetan Plateau and its paleoenvironmental significance

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Science China Earth Sciences 2017年第12期60卷 2171-2180页

作者： LI HuaYong zhang HuCai CHANG FengQin ZHENG Qian zhang wenxiang LEI GuoLiang LEI YanBin PU Yang JI JunFeng Key Laboratory of Plateau Lake Ecology and Global Change Yunnan Provincial Key Laboratory of Plateau Geography Process and Environment ChangesCollege of Tourism and Geography ScienceYunnan Normal UniversityKunming 650500China School of Resource Environment and Tourism Anyang Normal UniversityAnyang 455000China College of Urban and Environment Sciences Central China Normal UniversityWuhan 430079China Key Laboratory for Subtropical Mountain Ecology(Ministry of Science and Technology and Fujian Province Funded) Fujian Normal UniversityFuzhoa 350007China Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100085China School of Remote Sensing Nanjing University of Information Science&TechnologyNanjing 210044China Institute of Surface Geochemistry Department of Earth SciencesNanjing UniversityNanjing 210093China

Lake Zigetang is located on the central Tibetan Plateau(TP) and represents a rare but typical meromictic lake in *** lake's stable meromixis sustains microflora communities, and changes in these communities are relatively independent of climate. Therefore, these communities can be used as paleoclimate proxies. In this paper, the stratification properties and their relationships with the microflora of Lake Zigetang were analyzed. We found that water depth and climate conditions were two important factors for maintaining meromixis in Lake Zigetang. Generally, stratification was enhanced during warm periods, while temperature differences between the mixolimnion and monimolimnion were decreased during cold periods. The presence of anoxygenic phototrophic bacteria(APB) was demonstrated by the discovery of bacteriopheophytin-a(Bph-a) in the *** bacterial community is mainly concentrated at the bottom of the chemocline and the top of the monimolimnion, where it forms a thin APB layer. Moreover, total APB productivity is mainly affected by the light intensity penetrating to the APB layer,which exponentially increases as the thermocline becomes shallow. Therefore, high Bph-a values in the lake corresponded to a shallow thermocline and warm periods, low Bph-a values corresponded to cold periods, and zero changes indicated that the water was completely mixed and reflected an extreme cold climate or low lake level period. Thus, Bph-a can be used as a climate proxy to reconstruct the history of lake stratification and climate changes.

关键词： Lake Zigetang Tibetan Plateau Meromictic lakes Thermocline Anoxygenic phototrophic bacteria

Molecular Cloning and Function Analysis of Two SQUAMOSA-Like MADS-Box Genes From Gossypium hirsutum L.

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Journal of Integrative Plant Biology 2013年第7期55卷 597-607页

作者： wenxiang zhang Shuli Fan Chaoyou Pang Hengling Wei Jianhui Ma Meizhen Song Shuxun Yu State Key Laboratory of Cotton Biology Institute of Cotton Research of Chinese Academy of Agriculture Sciences College of Agronomy Northwest A & F University

The MADS-box genes encode a large family of transcription factors having diverse roles in plant development. The SQUAMOSA （SQUA）/APETALA1 （AP1）/FRUITFULL （FUL） subfamily genes are essential regulators of floral transition and floral organ identity. Here we cloned two MADS-box genes, GhMADS22 and GhMADS23, belonging to the SQUA/AP1/FUL subgroup from Gossypium hirsutum L. Phylogenetic analysis and sequence alignment showed that GhMAD$22 and GhMADS23 belonged to the euFUL and euAP1 subclades, respectively. The two genes both had eight exons and seven introns from the start codon to the stop codon according to the alignment between the obtained cDNA sequence and the Gossypium raimondii L. genome sequence. Expression profile analysis showed that GhMADS22 and GhMADS23 were highly expressed in developing shoot apices, bracts, and sepals. Gibberellic acid promoted GhMADS22 and GhMADS23 expression in the shoot apex. Transgenic Arabidopsis lines overexpressing 35S：：GhMADS22 had abnormal flowers and bolted earlier than wild type under long-day conditions （16 h light/8 h dark）. Moreover, GhMADS22 over- expression delayed floral organ senescence and abscission and it could also respond to abscisic acid. In summary, GhMADS22 may have functions in promoting flowering, improving resistance and delaying senescence for cotton and thus it may be a candidate target for promoting early-maturation in cotton breeding.

关键词： Arabidopsis transformation flowering time MADS-box SQUAMOSA-like overexpression.

Climate variability recorded by n-alkanes of paleolake sediment in Qaidam Basin on the northeast Tibetan Plateau in late MIS3

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Science China Earth Sciences 2010年第6期53卷 863-870页

作者： PU Yang zhang HuCai LEI GuoLiang CHANG FengQin YANG MingSheng zhang wenxiang LEI YanBin YANG LunQing PANG YouZhi State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China Graduate University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Boyang Lake MOESchool of Environmental and Chemical EngineeringNanchang UniversityNanchang 330031China

Here we combine n-alkanes preserved in a shell bar section from Qarhan paleolake, Qaidam Basin with the other sedimentary proxies to elucidate the lake evolution process during the period 39.7 to 17.5 14C ka BP (calibrated age ranges from 43.5 to 22.4 cal. ka BP). In different stages, the n-alkane homologues exhibited different distribution modes indicative of variations in the surrounding vegetation and the hydrologic condition of the lake. The n-alkanes proxies (CPIh, ACLh, Paq) have the same trends as the summer solar insolation variation, implying that the summer insolation is the most important climatic factor driving the environmental changes and also indirectly controls lake evolution on the Tibetan Plateau. CPIh and ACLh as well as the total pollen concentration appear to show a trend comparable with methane concentration record from the GRIP ice core that reflected the Dansgaard-Oeschger events. This demonstrates that the paleoclimate variations in Qarhan area generally agree with global climate change and show rapid oscillations in late MIS3. These findings provide the latest molecular fossil evidence from paleolake sediments to confirm that lake evolution on Tibetan Plateau in late MIS3 was closely associated with enhanced summer insolation.

关键词： paleolake sediment molecular fossil n-alkane paleoclimate paleoenvironment solar insolation

Progress in Space Debris Research

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空间科学学报 2010年第5期30卷 516-518页

作者： Zhao Changyin zhang wenxiang Han Zengyao Wang Hongbo Key Laboratory of Space Object and Debris Observation Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 Shanghai Academy of Spacefight Technology China Academy of Space Technology

During recent years,A de-orbit disposal of SinoSat 2 satellite and the depletion of the residual propellant after SC/LV separation for all LM-4 series launch vehicles were carried *** Whipple Shields based on hypervelocity impact particles were *** observation and collision avoidance were *** main progress in space debris research will be introduced from three aspects:mitigation,spacecraft protection,observation and collision avoidance.

关键词：空间碎片鑫诺2号卫星超高速撞击运载火箭避免碰撞供应链推进剂航天器

Association analysis between HFM1 variations and idiopathic azoospermia or severe oligozoospermia in Chinese Men

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Science China(Life Sciences) 2017年第3期60卷 315-318页

作者： wenxiang zhang Xiaomin Song Feng Ni Jinbao Cheng Bai-Lin Wu Hong Jiang Clinical College of PLA Affiliated Anhui Medical University Hefei 230031China Reproductive Medicine Center the 105^th hospital of PLAHefei 230031China Children's Hospital of Fudan University Institute of Biomedical ScienceShanghai Medical College of Fudan UniversityShanghaiChina 200032 Boston Children's Hospital and Harvard Medical School BostonMA 02115USA

Dear Editor,Infertility affects 10%？15%of couples trying to conceive,with male factors contributing to as many as 50%of infertile cases（Meng et al.,2015）.Azoospermia or severe oligozoospermia（oligo/azoospermia）,c... 详细信息

关键词：无精子症相关性分析男人中国

Characterization and manipulation of the photosystem Ⅱ-semiconductor interfacial molecular interactions in solar-to-chemical energy conversion

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Journal of Energy Chemistry 2022年第7期31卷 437-443,I0012页

作者： Min He Wangyin Wang Zheyi Liu wenxiang zhang Jinan Li Wenming Tian Ye Zhou Yan Jin Fangjun Wang Can Li CAS Key Laboratory of Separation Sciences for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian 116023LiaoningChina State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Semi-artificial photosynthesis interfacing catalytic protein machinery with synthetic photocatalysts exhibits great potential in solar-to-chemical energy conversion. However, characterizing and manipulating the molecular integration structure at the biotic-abiotic interface remain a challenging task. Herein,the biointerface molecular integration details of photosystem II(PSII)-semiconductor hybrids, including the PSII orientation, interfacial microdomains, and overall structure modulation, are systematically interrogated by lysine reactivity profiling mass spectrometry. We demonstrate the semiconductor surface biocompatibility is essential to the PSII self-assembly with uniform orientation and electroactive *** directional localization of PSII onto more hydrophilic Ru/Sr Ti O_(3):Rh surface exhibits less disturbance on PSII structure and electron transfer chain, beneficial to the high water splitting ***, rational modification of hydrophobic Ru_(2)S_(3)/Cd S surface with biocompatible protamine can improve the hybrid O_(2)-evolving activity 83.3%. Our results provide the mechanistic understanding to the structure–activity relationship of PSII-semiconductor hybrids and contribute to their rational design in the future.

关键词： PSII-semiconductor hybrids Biointerface molecular interaction Solar-to-chemical energy conversion Mass spectrometry Lysine reactivity profiling

Branched aliphatic alkanes of shell bar section in Qarhan Lake,Qaidam Basin and their paleoclimate significance

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Chinese Science Bulletin 2007年第9期52卷 1248-1256页

作者： zhang HuCai CHANG FengQin LI Bin LEI GuoLiang CHEN Yue zhang wenxiang NIU Jie FAN HongFang YANG MingSheng Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 China Key Laboratory of Westem China's Environments MOE College of Earth Sciences and Environments Lanzhou University Lanzhou 730000 China

Biomarkers of paleolake deposits from Qarhan Salt Lake in Qaidam Basin,northwest China were sys-tematically analyzed and the A―C series compounds of branched aliphatic alkanes with quaternary substituted carbon atom(BAQCs) were identified. The homologous distinguished three series,A―C,were identified as 5,5-diethylalkanes,6,6-diethylalkanes and 5-butyl,5-ethylalkanes series,and their relative abundance was A > B > C. Series A and C were characterized by odd carbon numbers,whereas series B was characterized by even carbon numbers. The high values of series A corresponded with the high values of series B and C. Therefore,it can be concluded that series A,B and C possess a similar biological origin. The abundance of series A was relatively low in the lower part of the section compared with that in the upper part,implying that these series originated from bacteria and/or algae more prevalent in fresh-mesohaline water,and such kinds of bacteria and/or algae are most likely to be thermophilous species. The A25/nC25 ratio differences in the section show that such branched aliphatic alkanes can be treated as one kind of environmental change proxy for paleolake evolution and may provide important information for the climate reconstruction of the Late Pleistocene.

关键词：柴达木盆地察尔汗盐湖贝壳堤剖面侧链脂族烷古气候意义

Selection and Characterization of a Novel Photoperiod-Sensitive Male Sterile Line in Upland Cotton

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Journal of Integrative Plant Biology 2013年第7期55卷 608-618页

作者： Jianhui Ma Hengling Wei Ji Liu Meizhen Song Chaoyou Pang Long Wang wenxiang zhang Shuli Fan Shuxun Yu State Key Laboratory of Cotton Biology the Institute of Cotton Researchthe Chinese Academy of Agricultural Sciences College of Life Sciences Henan Normal University College of Agronomy Northwest A & F University

Upland cotton （Gossypium hirsutum L.） shows strong heterosis. However, heterosis is not widely utilized owing to the high cost of hybrid seed production. Creation of a photoperiod-sensitive genetic male sterile line could substantially reduce the cost of hybrid seed production in upland cotton. Such a mutant with virescent marker was found by space mutation in near-earth orbit and its traits had been stable after 4 years of selection in Anyang and Sanya, China. This mutant was fertile with an 11-12.5 h photoperiod when the temperature was higher than 21.5 ℃ and was sterile with a 13-14.5 h photoperiod. Genetic analysis indicated that both traits were controlled by a single recessive gene or two closely linked genes. Also, the cytological observations and transcriptome profiling analysis showed that the degradation of pollen grain cytoplasm should be the primary reason why the mutant line were male sterile under long-day conditions.

关键词： Photoperiod-sensitive genetic male sterile sterility mechanism upland cotton virescent marker.