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Sulfone-functionalized stable molecular single crystals for photocatalytic hydrogen evolution

SusMat 2024年第3期4卷 240-250页

作者： Xunliang Hu Xiaoju Yang Bingyi Song Zhen Zhan Ruixue Sun Yantong Guo Li-Ming Yang Xuan Yang Chun Zhang Irshad Hussain xiaoyan wang Bien Tan Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhanChina Department of Applied Physics The Hong Kong Polytechnic UniversityKowloonHong KongChina College of Life Science&Technology Huazhong University of Science and TechnologyWuhanChina Department of Chemistry and Chemical Engineering SBA School of Science and EngineeringLahore University of Management SciencesLahorePakistan

Highly crystalline organic semiconductors are ideal materials for photocatalytic hydrogen evolution in water ***,the instability and complex synthesis processes of most reported organic molecule-based photocatalysts restrict their *** this study,we introduce benzo[1,2-b:4,5-bʹ]bis[1]benzothiophene-3,9-dicarboxylic acid,5,5,11,11-tetraoxide(FSOCA),a highly crystalline,stable molecular crystal that is easy to synthesize and serves as an efficient photocatalyst for the hydrogen evolution *** exhibits high efficiency in sacrificial hydrogen evolution reaction(760μmol h^(−1),76 mmol g^(−1)h^(−1)at 330 mW cm^(−2);570μmol h^(−1),57 mmol g^(−1)h^(−1)at 250 mW cm^(−2)),and FSOCA remains stable during photocatalysis for up to 400 *** and theoretical studies confirmed the presence of hydrogen bonds between the sulfone group and the sacrificial agent(ascorbic acid).This interaction significantly improved the oxidation reaction kinetics and boosted the photocatalytic *** study presents a scalable and convenient approach to synthesize highly crystalline,active,and stable organic photocatalysts with potential applications in large-scale photocatalysis.

关键词： exceptional durability molecular single crystals photocatalytic water splitting

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Adsorption of Phenanthrene in Soil to Biochar Modified by β-Cyclodextrin

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Journal of Materials Science and Chemical Engineering 2024年第9期12卷 44-54页

作者： Wanke Chen Qing Guo xiaoyan wang Xiao wang Jing Yuan Qianfeng Zhang Insitute of Molecular Engineering and Applied Chemistry Anhui University of Technology Maanshan China Department of Civil Engineering Tongling University Tongling China Department of Civil Engineering Manitoba University Winnipeg Canada

In this study, the adsorption effect of β-cyclodextrin modified biochar (BC) on phenanthrene (PHE) in contaminated soil was investigated, aiming to provide an efficient and environmentally friendly remediation strategy for Polycyclic Aromatic Hydrocarbons (PAHs) contaminated soil. Through kinetic and isotherm analysis, β-CDBC-CA showed excellent phenanthrene adsorption performance, and the adsorption effect increased with the increase of time and was affected by temperature. The results show that β-CDBC-CA can not only effectively adsorb phenanthrene in soil, but also serve as a surfactant to help desorption phenanthrene adsorbed by soil organic matter and improve the efficiency of microbial degradation. The experimental data showed that the Elovich model could describe the adsorption behavior of β-CDBC-CA on phenanthrene well, while Langmuir and Freundlich models performed better in fitting parameters, revealing the adsorption mechanism of phenanthrene in contaminated soil by β-cyclodextrin-modified biochar. In addition, temperature has a significant effect on the adsorption capacity of β-CDBC-CA, and its application in soil remediation can be optimized by adjusting temperature. This study not only provides new materials and technical means for soil remediation but also provides important data support for an in-depth understanding of the environmental behavior of PAHs. By citing relevant research results, this study further improves the control and understanding of environmental risks of PAHs, which is of great significance for the protection of ecological environment and human health.

关键词： PAHs Biochar β-Cyclodextrin Modification Adsorption Soil Remediation

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Synthesis and Characterization of β-Cyclodextrin Modified Biochar Environmental Remediation Materials

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Journal of Materials Science and Chemical Engineering 2024年第4期12卷 42-52页

作者： Qing Guo Xiao wang Wanke Chen xiaoyan wang Jing Yuan Qianfeng Zhang Institute of Molecular Engineering and Applied Chemistry Anhui University of Technology Ma&#8217anshan China Department of Civil Engineering Tongling University Tongling China Department of Civil Engineering Manitoba University Winnipeg Canada

In this paper, biochar (BC) was used as raw material, activated by deionizing aqueous solution, NaCl solution, CA solution and HCl solution respectively. Epichlorohydrin (EPI) was used as crosslinking agent, and β-cyclodextrin (β-CD) was used to modify biochar (BC). The prepared modified biochar materials were labeled with β-CDBC, β-CDBC-Na, β-CDBC-CA and β-CDBC-H, respectively. The infrared spectrum, X-ray diffractometer, scanning electron microscope and specific surface area of the four modified materials were tested. The results showed that the C-O stretching vibration peak at 1020 cm−1 of the modified materials was slightly offset compared with that of biochar. The characteristic absorption peaks of XRD pattern decrease obviously at 2θ = 26.7˚ and 29.5˚. It can be obviously observed on the electron microscope image that the surface is loaded or formed clathrates, and BET data and graphs also show that the specific surface area of the modified biochar is larger. Therefore, β-cyclodextrin successfully modified biochar and formed clathrates on the surface of biochar or was loaded in the pore structure of biochar, especially β-CDBC-CA achieved better modification effect. Because biochar and β-cyclodextrin raw materials are cheap, easy to prepare and green, and less prone to secondary pollution, it has a good advantage in environmental governance.

关键词： Biochar Β-Cyclodextrin Modification Clathrate Green Environmental Protection

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Advanced nano drug delivery systems for neuroprotection against ischemic stroke

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Chinese Chemical Letters 2024年第2期35卷 151-162页

作者： Chenchen Xie Jun Liao Ning Zhang Yuhan Sun Yi Li Liyan Xiong Yingnan Zhang xiaoyan Liu Wei Su Heming Chen Ping Zeng Xiaoqing Zhang Ying Lu Tingfang wang Chuan Zhang Shanghai Engineering Research Center of Organ Repair School of MedicineShanghai UniversityShanghai 200444China Department of Pharmaceutical Science School of PharmacyNaval Medical UniversityShanghai 200433China Department of pharmacy the International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200030China School of Pharmacy Shanghai Jiao Tong UniversityShanghai 200040China

Ischemic stroke(IS)represents a significant threat to brain health due to its elevated mortality and disability *** efficacy of small-molecule neuroprotective agents has been impeded by challenges associated with traversing the blood-brain barrier(BBB)and limited ***,advanced nano drug delivery systems hold promise for overcoming these obstacles by facilitating efficient transportation across the BBB and maintaining optimal drug *** review aims to explore advanced neuroprotective nano drug delivery systems as a means of effectively administering neuroprotective agents to the brain using pharmaceutical approaches in the treatment of *** examining these systems,researchers and clinicians can gain valuable insights and innovative concepts,illuminating the potential of advanced neuroprotective nano drug delivery *** these advancements can drive the progress of pioneering and efficacious therapeutic interventions for IS.

关键词： Target Blood-brain barrier Ischemic stroke Nano drug delivery Neuroprotection

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Research and Application of Compressed Fermented Chestnut Leaf Feed in Fattening Mutton Sheep

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Agricultural Biotechnology 2024年第4期13卷 28-30,37页

作者： Lei wang xiaoyan LI Rundong QIANG Yu zhou Huihui CAO Shengyu SU Kaixuan ZHANG Changli wang hengzhi REN Daxin CHAI Yuli wang Zhongkuan LIU Tangshan Food and Drug Comprehensive Inspection and Testing Center Tangshan 063000China Agriculture and Rural Affairs Bureau of Qianxi County Tangshan 063000China Tangshan Academy of Agricultural Sciences Tangshan 063000China Jidong Comprehensive Experimental Promotion Station of Grass Industry Innovation Team of Hebei Provincial Modern Agricultural Industry System Tangshan 063000China Yanshan University Qinhuangdao 066000China Institute of Agricultural Resources and Environment Hebei Academy of Agriculture and Forestry SciencesShijiazhuang 050050China

Chestnut leaves and bran were evenly mixed according to different mass ratios,and the mixtures were sprayed and inoculated with a certain amount of prepared EM microbial liquid,and then compressed into 70 cm×40 cm×30 cm blocks by a fully automatic yellow-storage block compression and packaging *** obtained blocks were packaged and sealed with plastic film,and placed in a freely ventilated place for more than 15 d of anaerobic fermentation,so as to obtain compressed fermented chestnut leaf block feed.[Results]Through the detection and analysis of nutritional components in the compressed fermented chestnut leaf block feed in the laboratory,the protein content was equal to or greater than 10.2%,which was 44.68%higher than that of unfermented chestnut leaf feed;the tannin content was equal to or greater than 638 mg/kg,which was 18.41%lower than that of the original feed;and the crude fiber content was equal to or greater than 19.5%,which was 14.09%lower than that of the original feed.[Conclusions]This study improves the palatability of chestnut leaf feed,increases the use efficiency of feed and reduces feeding *** is worth popularizing.

关键词： EM microbial liquid Chestnut leaf Compressed fermentation Fattening of mutton sheep

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Effects and mechanisms of Panax notoginseng-steamed chicken on uterine involution in mice

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Food Science and Human Wellness 2024年

作者： Zhuowen Chen Yue Dang Lanping Guo Yuan Qu Yuan Liu xiaoyan Yang Xiuming Cui Chengxiao wang Ye Yang School of Life Science and Technology， Kunming University of Science and Technology Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province China Academy of Chinese Medical Sciences

Panax notoginseng-steamed chicken (PNSC) is a common medicinal diet in China. In this study， we conducted comprehensive analysis to determine the effect of PNSC on uterine involution in postpartum mice and human umbilical vein endothelial cells. The role of the PI3K/AKT/mTOR pathway in this process was explored. Results showed that PNSC promoted the recovery of endometrial hyperplasia and uterine index in postpartum mice. In vitro and in vivo experiments indicated that PNSC activated PI3K/AKT/mTOR signaling pathway， promoted the proliferation of human umbilical vein endothelial cells (HUVEC)， up-regulated the expression of VEGF， and its binding to VEGFR2. Moreover， it increased the expression of PCNA， MMP9， and CyclinD1 in the nucleus. Moreover， it up-regulated the secretion of hormones， such as prolactin (PRL)， progesterone (P)， as well as the level of vascular endothelial growth factor (VEGF) in mice， and down-regulated the secretion of endothelin-1 hormones (ET-1)， thereby promoting uterine involution. In conclusion， this study demonstrates that PNSC can regulate angiogenesis to promote uterine involution by activating the PI3K/AKT/mTOR pathway.

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双燃料喷射器油-气瞬时质量流率同场测量方法

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内燃机学报 2024年第1期42卷 61-69页

作者：周谈庆杨晰宇王晓艳魏代君董全哈尔滨工程大学动力与能源工程学院黑龙江哈尔滨150001 潍柴动力股份有限公司山东潍坊261041

提出一种组合式的测量方法,将其应用于缸内高压直喷柴油/天然气发动机双燃料喷射器瞬态燃料质量流率的研究,实现了两相燃料同场高精度测试.针对传统“动量法”只能获取喷气规律型线无法获取准确质量流率的问题,提出一种平行测试的方法,... 详细信息

提出一种组合式的测量方法,将其应用于缸内高压直喷柴油/天然气发动机双燃料喷射器瞬态燃料质量流率的研究,实现了两相燃料同场高精度测试.针对传统“动量法”只能获取喷气规律型线无法获取准确质量流率的问题,提出一种平行测试的方法,通过采集测试容腔内的压力变化获取循环喷气量,结合瞬态动量信号得到精确的喷气规律曲线.并对喷射器的计量特征及时间特征进行验证.最后对柴油/天然气双燃料喷射器常用工况进行测试,结果表明:该方法解决了两相燃料难以同场测量的问题,实现了双燃料喷射器油-气瞬时质量流率的精确测量;喷气量测试误差不超过5%,喷油及喷气起始时刻与结束时刻的测试误差不超过0.113 ms,喷油量及喷气量的波动率分别不超过1.4%和2.9%.随着燃料喷射压力增加,喷射器的开启时段减小、关闭时段增加,且内部轴针开启和关闭的速度均大于外部轴针.引燃油的喷射通过影响喷气持续期影响喷气量,先油后气喷射方式下的喷气量在仅喷气方式下的喷气量上、下波动.

关键词：双燃料缸内直喷质量流率同场测量

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沈自晋《南词新谱》的总集意识及其价值

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文学遗产 2024年第3期 127-136页

作者：王小岩北京师范大学文理学院中文系

沈自晋《南词新谱》不应仅被视为一部曲学工具书。从其编纂动机看,沈自晋与冯梦龙、沈自继、沈永隆等人欲汇集“一代之乐府”,因此《南词新谱》实为以曲谱形式编纂的总集。而大量收录晚明四十年丰富的、动态化的“新声”的《南词新谱》... 详细信息

沈自晋《南词新谱》不应仅被视为一部曲学工具书。从其编纂动机看,沈自晋与冯梦龙、沈自继、沈永隆等人欲汇集“一代之乐府”,因此《南词新谱》实为以曲谱形式编纂的总集。而大量收录晚明四十年丰富的、动态化的“新声”的《南词新谱》,也就成为一个特殊的记忆文本。通过这个存储故国“新声”的记忆文本,遗民读者实能借此达成文化认同。《南词新谱》这一特殊的价值,需要从“新声”总集的这一特殊视角才能认识到,而这也是沈自晋本人所希望读者领会的。

关键词：沈自晋 “新声” 曲谱总集文化记忆

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A novel live attenuated vaccine candidate protects chickens against subtype B avian metapneumovirus

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Journal of Integrative Agriculture 2024年第5期23卷 1658-1670页

作者： Lingzhai Meng Mengmeng Yu Suyan wang Yuntong Chen Yuanling Bao Peng Liu xiaoyan Feng Tana He Ru Guo Tao Zhang Mingxue Hu Changjun Liu Xiaole Qi Kai Li Li Gao Yanping Zhang Hongyu Cui Yulong Gao Avian Immunosuppressive Diseases Division State Key Laboratory for Animal Disease Control and PreventionHarbin Veterinary Research InstituteChineseAcademy of Agricultural SciencesHarbin150069China Avian ImmunosuppressiveDiseases DivisionStateKey LaboratoryforAnimal Disease Cont National Poultry Laboratory Animal Resource Center Harbin 150069China

Avian metapneumovirus(aMPV) is a highly contagious pathogen that causes acute upper respiratory tract diseases in chickens and turkeys, resulting in serious economic losses. Subtype B aMPV has recently become the dominant epidemic strain in China. We developed an attenuated aMPV subtype B strain by serial passaging in Vero cells and evaluated its safety and efficacy as a vaccine candidate. The safety test showed that after the 30th passage, the LN16-A strain was fully attenuated, as clinical signs of infection and histological lesions were absent after *** LN16-A strain did not revert to a virulent strain after five serial passages in chickens. The genomic sequence of LN16-A differed from that of the parent wild-type LN16(wtLN16) strain and had nine amino acid mutations. In chickens, a single immunization with LN16-A induced robust humoral and cellular immune responses, including the abundant production of neutralizing antibodies, CD4^(+) T lymphocytes, and the Th1(IFN-γ) and Th2(IL-4 and IL-6)cytokines. We also confirmed that LN16-A provided 100% protection against subtype B aMPV and significantly reduced viral shedding and turbinate inflammation. Our findings suggest that the LN16-A strain is a promising live attenuated vaccine candidate that can prevent infection with subtype B aMPV.

关键词： avian metapneumovirus attenuated protection vaccine candidate chickens

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Expert consensus on irrigation and intracanal medication in root canal therapy

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International Journal of Oral Science 2024年第1期16卷 26-35页

作者： Xiaoying Zou Xin Zheng Yuhong Liang Chengfei Zhang Bing Fan Jingping Liang Junqi Ling Zhuan Bian Qing Yu Benxiang Hou Zhi Chen Xi Wei Lihong Qiu Wenxia Chen Wenxi He Xin Xu Liuyan Meng Chen Zhang Liming Chen Shuli Deng Yayan Lei Xiaoli Xie xiaoyan wang Jinhua Yu Jin Zhao Song Shen Xuedong zhou Lin Yue Department of Cariology and Endodontology Peking University School and Hospital of Stomatology&National Center of Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology&Beijing Key Laboratory of Digital Stomatology&Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health&NMPA Key Laboratory for Dental MaterialsBeijingChina Center of Stomatology Peking University HospitalBeijingChina State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&West China Hospital of Stomatology Sichuan UniversityChengduChina Department of Emergency Peking University School and Hospital of Stomatology&National Center of Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology&Beijing Key Laboratory of Digital Stomatology&Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health&NMPA Key Laboratory for Dental MaterialsBeijingChina Restorative Dental Sciences EndodonticsFaculty of DentistryThe University of Hong KongPok Fu LamHong Kong SARChina State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration Key Laboratory of Oral Biomedicine Ministry of EducationHubei Key Laboratory of StomatologySchool&Hospital of StomatologyWuhan UniversityWuhanChina Department of Endodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityNational Clinical Research Center for Oral DiseasesNational Center for StomatologyShanghai Key Laboratory of StomatologyShanghaiChina Department of Operative Dentistry and Endodontics Hospital of StomatologyGuanghua School of StomatologySun Yat-Sen University&Guangdong Provincial Key Laboratory of StomatologyGuangzhouChina State Key Laboratory of Oral&Maxillofacial Reconstruction and R

Chemical cleaning and disinfection are crucial steps for eliminating infection in root canal treatment. However, irrigant selection or irrigation procedures are far from clear. The vapor lock effect in the apical region has yet to be solved, impeding irrigation efficacy and resulting in residual infections and compromised treatment outcomes.

关键词： treatment irrigation Expert

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