检索结果-南通市图书馆

Nano Research 2024年第3期17卷 1107-1113页

作者： Jing Ni Zhaoping Shi Yibo Wang Jiahao Yang hongxiang wu Pengbo Wang Kai Li Meiling Xiao Changpeng Liu Wei Xing State Key Laboratory of Electroanalytic Chemistry Jilin Province Key Laboratory of Low Carbon Chemistry PowerChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

The scale-up deployment of ruthenium(Ru)-based oxygen evolution reaction(OER)electrocatalysts in proton exchange membrane water electrolysis(PEMWE)is greatly restricted by the poor stability.As the lattice-oxygen-mediated mechanism(LOM)has been identified as the major contributor to the fast performance degradation,impeding lattice oxygen diffusion to inhibit lattice oxygen participation is imperative,yet remains challenging due to the lack of efficient approaches.Herein,we strategically regulate the bonding nature of Ru–O towards suppressed LOM via Ru-based high-entropy oxide(HEO)construction.The lattice disorder in HEOs is believed to increase migration energy barrier of lattice oxygen.As a result,the screened Ti_(23)Nb_(9)Hf_(13)W_(12)Ru_(43)O_(x) exhibits 11.7 times slower lattice oxygen diffusion rate,84%reduction in LOM ratio,and 29 times lifespan extension compared with the state-of-the-art RuO_(2) catalyst.Our work opens up a feasible avenue to constructing stabilized Ru-based OER catalysts towards scalable application.

关键词： ruthenium-based high-entropy oxide suppressing the lattice oxygen diffusion acidic oxygen evolution reaction

Stabilizing high-efficiency iridium single atoms via lattice confinement for acidic oxygen evolution

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第4期17卷 2492-2498页

作者： Yibo Wang Jiadong Jiang Zhaoping Shi hongxiang wu Jiahao Yang Pengbo Wang Shuai Hou Meiling Xiao Junjie Ge Changpeng Liu Wei Xing Laboratory of Advanced Power Sources Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026.China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Jilin Province Key Laboratory of Low Carbon Chemical Power Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Key Laboratory of Physics and Technology for Advanced Batteries Ministry of EducationCollege of PhysicsJilin UniversityChangchun 130012China

Stable and efficient single atom catalysts(SACs)are highly desirable yet challenging in catalyzing acidic oxygen evolution reaction(OER).Herein,we report a novel iridium single atom catalyst structure,with atomic Ir doped in tetragonal PdO matrix(IrSAs-PdO)via a lattice-confined strategy.The optimized IrSAs-PdO-0.10 exhibited remarkable OER activity with an overpotential of 277 mV at 10 mA·cm^(-2) and long-term stability of 1000 h in 0.5 M H_(2)SO_(4).Furthermore,the turnover frequency attains 1.6 s^(-1) at an overpotential of 300 mV with a 24-fold increase in the intrinsic activity.The high activity originates from isolated iridium sites with low valence states and decreased Ir–O bonding covalency,and the excellent stability is a result of the effective confinement of iridium sites by Ir–O–Pd motifs.Moreover,we demonstrated for the first time that SACs have great potential in realizing ultralow loading of iridium(as low as microgram per square center meter level)in a practical water electrolyzer.

关键词： lattice confinement iridium single atoms ultralow iridium loading acidic oxygen evolution proton exchange membrane water electrolysis

Degradation mechanisms and stabilization strategies of ruthenium-based catalysts for OER in the proton exchange membrane water electrolyzer

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2024年第1期34卷 207-222页

作者： Ming Yang hongxiang wu Zhaoping Shi Yibo Wang Jiahao Yang Jing Ni Pengbo Wang Yuqing Cheng Ziang Wang Meiling Xiao Changpeng Liu Wei Xing Laboratory of Advanced Power Sources Changchun Institute of Applied Chemistry Chinese Academy of Sciences School of Applied Chemistry and Engineering University of Science and Technology of China Jilin Province Key Laboratory of Low Carbon Chemical Power Sources State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences

Designing economical oxygen evolution reaction(OER) electrocatalysts with high activity and long-term stability is essential to promote the scale-up applications of proton exchange membrane water electrolyzer(PEMWE) for hydrogen production. Ruthenium(Ru)-based materials with high intrinsic activity are hailed as the most promising catalysts, but still infeasible for practical application considering their long unresolved poor stability(only dozens of lifespan). Thus, tremendous efforts have been devoted to uncovering the degradation mechanisms and developing stabilization strategies for the Ru-based catalysts. In this review, starting from summarizing the fundamental understanding of deactivation mechanisms, a picture of the stability issue of Ru-based catalysts is proposed, which is followed by a detailed discussion on the recently developed strategies and progress made on enhancing durability. Finally, insights on the prospects for the future development of stable and practical Rubased OER catalysts are provided.

关键词： OER Ru-based catalysts PEMWE Degradation mechanisms Stabilization strategies

Gut microbiota and differential genes-maintained homeostasis is key to maintaining health of individuals with Yang-deficiency constitution

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2022年第1期42卷 96-101页

作者： ZHANG Huixiang WANG Limei GUO Jipeng WANG Jiai ZHANG Qianqian WANG Yutao LIU Xun ZHANG Lihuan SHI Lanlan wu hongxiang CAO Xue Institute of Neuroscience Basic Medical CollegeKunming Medical UniversityKunming 650500China Department of Laboratory Animal Science Kunming Medical UniversityKunming 650500China Department of Laboratory Animal Science Kunming Medical UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanYunnan UniversityKunming 650500Chin Faculty of Rehabilitation Medicine Kunming Medical UniversityKunming 650500China School of Electrical and Information Technology Yunnan Minzu UniversityKunming 650500China School of Medicine Kunming UniversityKunming 650214China Basic Medical College Kunming Medical UniversityKunming 650500China Department of Anatomy Histology and EmbryologyBasic Medical CollegeKunming Medical UniversityKunming 650500China

OBJECTIVE:Yang-deficiency constitution(YADC)is a common unbalanced constitution that predisposes individuals to certain diseases.However,not all people with YADC manifest develop diseases.This calls for delineation of the underlying molecular mechanisms.Previous studies suggested that the gut microbiota and gene differential expression should be considered.METHODS:In the present study,we compared profiles of gut microbiota between four healthy YADC individuals and those of five healthy balanced constitution(BC)counterparts,based on 16 S r RNA gene sequence analysis.Furthermore,YADC relevant genes identified by comparing 62 healthy YADC and 58 healthy BC individuals in total to perform intersection analysis,functional clustering and pathway enrichment analyses.RESULTS:The levels of harmful gut microbiota(Prevotellaceae,LDA score>4.0,P=0.0141)and beneficial gut microbiota(Ruminococcaceae,LDA score>4.0,P=0.0025,Faecalibacterium,LDA score>4.0,P=0.0484)were both elevated in healthy YADC individuals.Also,we found that the specific metabolic pathway with 2,6-Dichloro-p-hydroquinone 1,2-Dioxygenase(Pcp A)as the core in gut microbiota and the glutathione transferase activity has been enriched by YADC relevant genes in healthy YADC individuals were both responsible for the detoxification of halogenated aromatic hydrocarbon substances.CONCLUSIONS:Both beneficial and harmful factors had been detected in healthy YADC individuals,functionally,they may have triggered homeostasis to maintain the health of individuals with YADC.The homeostasis may be maintained by beneficial and harmful factors from gut flora and genes.Future studies are expected to focus on halogenated aromatic hydrocarbons and their detoxification processes.

关键词： Yang deficiency physical constitution theory health promotion gastrointestinal microbiome genes hydrocarbons aromatic homeostasis

Migration of paleo-uplift in southwestern Tarim Basin and its implications for orogenesis and reservoir development, NW China

在线全文

学校读者我要写书评

暂无评论

Petroleum Exploration and Development 2023年第1期50卷 99-110页

作者： YAN Jiakai CHEN Hanlin CHENG Xiaogan CHEN Yongquan ZENG Changmin CHEN Cai wu hongxiang School of Earth Sciences Zhejiang UniversityHangzhou 310058China Research Center for Structures in Oil and Gas Bearing Basins Ministry of EducationHangzhou 310058China Exploration and Development Research Institute of Petro China Tarim Oilfield Company Korla 841000China

Based on well horizon calibration,the typical seismic profiles in southwestern Tarim Basin were interpreted systematically,regional geological sections were established,and the regional denudation thickness of each tectonic period was restored.On this basis,the plane morphology maps of ancient structures of the Cambrian pre-salt dolomites in different periods were compiled,and the spatial distribution,development,evolution and migration of paleo-uplift in the late Early Paleozoic were analyzed.In the late Early Paleozoic,there existed a unified regional paleo-uplift widely distributed in southwestern Tarim Basin,which is called the southwestern Tarim plaeo-uplift.The“Tarim SW paleo-uplift”and“Hetian paleo-uplift”proposed in previous literatures are not independent,but the result of the spatio-temporal migration and evolution of the southwestern Tarim paleo-uplift identified in this paper.The southwestern Tarim paleo-uplift emerged at the end of Middle Ordovician,and took its initial shape with increased amplitude in the Late Ordovician.During the Silurian,the southwestern Tarim paleo-uplift rose steadily and expanded rapidly to the east,incorporating Pishan-Hetian and other areas,with the structural high locating in the Pishan-Hetian area.During the Devonian,the southwestern Tarim paleo-uplift began to shrink gradually,to a limited range in the Pishan-Hetian area in the southern part of the basin.During the Carboniferous,the southwestern Tarim paleo-uplift became an underwater uplift,that is,the paleo-uplift gradually died out.The southwestern Tarim paleo-uplift belongs to the forebulge of the southwestern Tarim foreland basin in the late Early Paleozoic,and its formation and evolution are related to the early Paleozoic orogeny of the West Kunlun orogenic belt in the south of the Tarim Basin.The migration of the southwestern Tarim paleo-uplift from the northwestern part of the southwestern Tarim Basin to the Pishan-Hetian area indicates the early Paleozoic orogenic process of the West Kunlun orogenic belt,which s

关键词： paleo-uplift denudation planar morphology of ancient structure spatio-temporal migration Early Paleozoic orogeny southwestern Tarim Basin

Inactivation efficiency of slightly acidic electrolyzed water against microbes on facility surfaces in a disinfection channel

在线全文

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2017年第6期10卷 23-30页

作者： Zang Yitian Li Baoming Shi Zhengxiang Sheng Xiaowei wu hongxiang Shu Dengqun College of Animal Science and Technology Jiangxi Agricultural UniversityNanchang 330045China Key Laboratory of Structure and Environment in Agricultural Engineering Ministry of AgricultureChina Agricultural UniversityBeijing 100083China

Slightly acidic electrolyzed water(SAEW,pH 6.0-6.5)is an ideal and environmentally-friendly disinfectant,which was used to prevent and control bacterial infections on farms.This work aims to investigate the inactivation effectiveness of SAEW in inactivating microbes in a disinfection channel.The bactericidal efficiency of SAEW on equipment surfaces was compared to two commercial disinfectants,Kuei A bromide solution(KAS,5:1000 v/v)and Glutaraldehyde solution(GS,5:1000 v/v).The disinfection effectiveness of SAEW in inactivating Salmonella enteritidis(S.enteritidis)on equipment surfaces in the disinfection channel was evaluated,and a model was developed using multiple linear regression analysis.Results indicated that SAEW was significantly(p0.05).In addition,available chlorine concentration(ACC)was an important factor than other factors,and the inactivation efficiency of Salmonella enteritidis sprayed by SAEW treatment was different between iron materials,kits and clothing surfaces(iron>kit>clothing).

关键词： slightly acidic electrolyzed water disinfection channel S.enteritidis disinfection bacterial infection prevention and control livestock farm

生物质炭对农田土壤腐殖质的影响——Meta分析

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

土壤 2024年第1期56卷 42-48页

作者：邓倩马娟娟孙西欢郑利剑武洪翔李旭峰安江龙太原理工大学水利科学与工程学院太原030024

为量化生物质炭对土壤腐殖质含量的影响程度,以不添加生物质炭土壤为对照,对不同土壤质地、土壤pH及生物质炭裂解温度、施用量、施用时长下生物质炭对土壤腐殖质含量的变化情况进行了Meta分析。结果表明:与对照相比,添加生物质炭显著提... 详细信息

为量化生物质炭对土壤腐殖质含量的影响程度,以不添加生物质炭土壤为对照,对不同土壤质地、土壤pH及生物质炭裂解温度、施用量、施用时长下生物质炭对土壤腐殖质含量的变化情况进行了Meta分析。结果表明:与对照相比,添加生物质炭显著提高了砂土腐殖质中的胡敏酸和胡敏素含量,平均提高幅度分别为18.6%和92.2%;增加了中性、碱性土壤中的胡敏酸含量,平均增幅分别为12.5%和13.7%;施用裂解温度为500~600℃的生物质炭对于土壤胡敏酸、富里酸和胡敏素含量的提升幅度最大,平均增幅分别为22.6%、14.1%和68.5%;生物质炭添加量为20~40 t/hm2条件下,显著提高了土壤胡敏酸、富里酸和胡敏素含量,平均增幅分别为23.7%、6.9%和84.6%;生物质炭施入土壤3个月内,胡敏酸含量显著升高,平均增幅为29.5%,在3个月到1年内增幅逐渐降低,1年后增幅又逐渐升高;生物质炭施入土壤6个月内,胡敏素含量增幅最高,平均为72.2%;随着生物质炭施用时间延长,土壤胡敏素含量的增幅逐渐降低。综上所述,施用裂解温度为500~600℃的生物质炭,在短期内对中性或碱性条件下的砂土及壤土中的腐殖质含量有较好的提升效果,随着施入时间的延长,该效果会逐渐稳定。

关键词：土壤腐殖质有机碳 Meta分析生物质炭

家禽骨骼肌肌纤维类型影响因素及其转化的研究进展

在线全文

学校读者我要写书评

暂无评论

中国畜牧兽医 2024年第4期51卷 1561-1572页

作者：谢兵红单艳菊范晨宇薛夫光吴红翔巨晓军束婧婷刘一帆江苏省家禽科学研究所江苏省家禽遗传育种重点实验室扬州225125 江西农业大学动物科学技术学院动物健康安全生产南昌重点实验室南昌330000 江苏省家禽科学研究所科技创新有限公司扬州211412

肌纤维是构成肌肉组织的基本单位。肌肉的肌纤维类型组成与肉品质密切相关,并可在机体生长发育、营养和饲养环境等外界刺激下发生变化。近年来,由于消费者和育种学家对肉品质的关注,家禽肌纤维类型及其转换规律已成为本领域的研究热点... 详细信息

肌纤维是构成肌肉组织的基本单位。肌肉的肌纤维类型组成与肉品质密切相关,并可在机体生长发育、营养和饲养环境等外界刺激下发生变化。近年来,由于消费者和育种学家对肉品质的关注,家禽肌纤维类型及其转换规律已成为本领域的研究热点之一。随着组学研究技术的发展,转录组学、蛋白组学等技术已广泛应用于家禽肌纤维类型调控机理的研究,极大地推动了相关研究的进展。充分了解目前有关肌纤维类型转化的研究,是后续开展相关肉品质与调控机制研究的重要理论基础。在此背景下,作者介绍了肌纤维的结构组成及不同类型的分类方法,简述了肌纤维类型与家禽肌肉品质特征相关性状如肉色、pH、系水力和嫩度之间的关系,并总结了生长、品种、环境和饲养方式等因素对肌纤维类型的影响,重点讨论了现有的分子调控研究进展,旨在为家禽肌纤维类型转换机理的研究提供参考。最后,对未来优质肉鸡的育种方向提出了展望,希望随着现代分子生物技术的发展,单细胞/空间组学技术、基于CRISPR/Cas9系统的基因编辑技术等前沿技术能在肌纤维类型研究领域广泛运用,肌纤维类型转换的机制研究将不断完善,并建立家禽肉质性状的分子选育方法。

关键词：家禽肉品质肌纤维类型肌纤维类型转换

缺氧对鸡成肌细胞肌纤维类型转化作用的机制探究

在线全文

学校读者我要写书评

暂无评论

畜牧兽医学报 2024年第6期55卷 2397-2408页

作者：谢兵红刘一帆薛夫光单艳菊屠云洁姬改革巨晓军束婧婷吴红翔江西农业大学动物科学技术学院动物健康安全生产南昌重点实验室南昌330000 江苏省家禽科学研究所江苏省家禽遗传育种重点实验室扬州225125 和盛食品集团有限公司泰州225501

旨在利用氯化钴(CoCl_(2))模拟肌细胞缺氧,并结合转录组测序分析缺氧对肌纤维类型及相关基因的影响。本试验以鸡原代成肌细胞为研究对象,使用不同浓度氯化钴(0、50、100、200和400μmol·L^(-1))处理细胞,每组设3个重复孔。通过检测缺... 详细信息

旨在利用氯化钴(CoCl_(2))模拟肌细胞缺氧,并结合转录组测序分析缺氧对肌纤维类型及相关基因的影响。本试验以鸡原代成肌细胞为研究对象,使用不同浓度氯化钴(0、50、100、200和400μmol·L^(-1))处理细胞,每组设3个重复孔。通过检测缺氧标志基因表达和观察细胞形态筛选氯化钴浓度,确定最适宜浓度用于建模。随后,将收集的细胞通过Illumina测序检测缺氧组和对照组鸡成肌细胞的转录表达谱,并分析差异基因和富集到的信号通路。结果表明,200μmol·L^(-1)氯化钴最适合构建鸡胚成肌细胞缺氧模型,通过转录组测序发现,在24和48 h时,缺氧组和对照组分别筛选出1 474个和2 028个差异表达基因,其中有959个差异基因在两个时间点共有。GO和KEGG分析发现,在缺氧环境下,鸡成肌细胞的信号受体活性调节、质膜组成成分、神经活性配体受体作用、PI3K-AKT、肌肉收缩等信号通路关键因子发生明显表达变化。测序和qRT-PCR结果一致显示,缺氧处理后慢肌纤维特异性基因如MYH7B、CSRP2显著上调,而快肌纤维特异性基因如MYH1F、MYH1D、TNNI2、SOX6显著下调,表明缺氧能够诱导鸡成肌细胞快肌纤维向慢肌纤维转换。本研究初步揭示了缺氧对鸡成肌细胞肌纤维类型转换的机制,并提供相关基因表达数据库,为未来家禽肉质和哺乳动物缺氧研究提供了重要参考。

关键词：缺氧鸡成肌细胞肌纤维类型转换

维普期刊数据库博看期刊

π-Extended giant dimeric acceptor as a third component enables highly efficient ternary organic solar cells with efficiency over 19.2%

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第8期95卷 263-270页

作者： Mengran Peng Haotian wu Liming wu Jianhua Chen Ruijie Ma Qunping Fan Hua Tan Weiguo Zhu hongxiang Li Junqiao Ding School of Chemical Science and Technology Yunnan University Department of Electrical and Electronic Engineering Research Institute for Smart Energy (RISE) Guangdong-Hong Kong-Macao (GHM) Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices The Hong Kong Polytechnic University State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University School of Materials Science and Engineering Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications Changzhou University College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University

Ternary strategy with a suitable third component is a successful strategy to improve the photovoltaic performance of organic solar cells(OSCs). Very recently, Y-series based giant molecule acceptors or oligomerized acceptors have emerged as promising materials for achieving highly efficient and stable binary OSCs, while application as third component for ternary OSCs is limited. Here a novel π-extended giant dimeric acceptor, GDF, is developed based on central Y series core fusion and rigid BDT as linker, and then incorporated into the state-of-the-art PM1:PC6 system to construct ternary OSCs.The GDF has a near planar backbone, resulting in increased π-conjugation, excellent crystallinity, and good electron transport capacity. When GDF is introduced into the PM1:PC6 system, it ensues in a cascade like the lowest unoccupied molecular orbitals(LUMO) energy level alignment, a complementary absorption band with PM1 and PC6, higher and balanced hole and electron mobility, slightly smaller domain size, and a higher exciton dissociation probability for PM1:PC6:GDF(1:1.1:0.1) blend film. As a consequence, the PM1:PC6:GDF(1:1.1:0.1) ternary OSC achieves a champion PCE of 19.22%, with a significantly higher open-circuit voltage and short-circuit current density, compared to 18.45% for the PM1:PC6(1:1.2) binary OSC. Our findings show that employing a π-extended giant dimeric acceptor as a third component significantly improves the photovoltaic performance of ternary OSCs.

关键词： Giant dimeric acceptor Ternary organic solar cells Third component