检索结果-南通市图书馆

Ligand modulation of active center to promote lead-free Cs2AgInCl6 photocatalytic CO2 reduction

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 660-669页

作者： Baofei Sun Wei Chen Yanyi Huang Daofu Wu Heng Luo Faguang Kuang Hongmei Ran Yichen Liu liqin Gao Jinchen Zhou Bo Gao Qiang Huang Xiaosheng tang Key Laboratory of Human Brain Bank for Functions and Diseases of Department of Education of Guizhou Province College of Basic Medical Guizhou Medical University College of Optoelectronic Engineering Chongqing University of Posts and Telecommunications School of Electromechanical and Automotive Engineering Yantai University State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Key Laboratory of Optoelectronic Technology & SystemsMinistry of Education College of Optoelectronic Engineering Chongqing University Key Laboratory of Optoelectronic Technology & Systems(Ministry of Education) College of Optoelectronic Engineering Chongqing University School of Materials Science and Engineering Zhengzhou University

Metal halide perovskites（MHP） are potential candidates for the photocatalytic reduction of CO2due to their long photogenerated carrier lifetime and charge diffusion length.However,the conventional long-chain ligand impedes the adsorption and activation of CO2molecules in practical applications.Here,a ligand modulation technology is employed to enhance the photocatalytic CO2reduction activity of lead-free Cs2AgInCl6microcrystals（MCs）.The Cs2AgInCl6MCs passivated by Oleic acid（OLA） and Octanoic acid（OCA） are used for photocatalytic CO2reduction.The results show that the surface defects and electronic properties of Cs2AgInCl6MCs can be adjusted through ligand modulation.Compared with the OLA-Cs2AgInCl6,the OCA-Cs2AgInCl6catalyst demonstrated a significant improvement in the catalytic yield of CO and CH4.The CO and CH4catalytic yields of OCA-Cs2AgInCl6reached 171.88 and34.15 μmol g-1h-1which were 2.03 and 12.98 times higher than those of OLA-Cs2AgInCl6,and the total electron consumption rate of OCA-Cs2AgInCl6was 615.2 μmol g-1h-1which was 3.25 times higher than that of OLA-Cs2AgInCl6.Furthermore,in situ diffuse reflectance infrared Fourier transform spectra revealed the enhancement of photocatalytic activity in Cs2AgInCl6MCs induced by ligand modulation.This study illustrates the potential of lead-free Cs2AgInCl6MCs for efficient photocatalytic CO2reduction and provides a ligand modulation strategy for the active promotion of MHP photocatalysts.

关键词： Lead-free perovskite Photocatalysis CO2 reduction Reactive mechanism Surface ligand

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

水处理剂和助剂在工业废水处理中的应用研究

山西冶金 2024年第1期47卷 51-52,55页

作者：汤立芹江苏中丽新材料有限公司江苏海安226671

为了有效去除废水中的重金属离子,开发一种高效且低成本的生物处理方法,研究水处理剂和助剂在工业废水处理中的应用。以壳聚糖为水处理剂、硫酸亚铁为助剂,制备出复合的絮凝剂,对工业废水中重金属离子进行絮凝去除。实验发现:重金属离... 详细信息

为了有效去除废水中的重金属离子,开发一种高效且低成本的生物处理方法,研究水处理剂和助剂在工业废水处理中的应用。以壳聚糖为水处理剂、硫酸亚铁为助剂,制备出复合的絮凝剂,对工业废水中重金属离子进行絮凝去除。实验发现:重金属离子的脱除率随水处理剂投加浓度的增加呈先上升后下降的变化趋势,重金属离子的脱除率随助剂投加浓度的增加呈先上升后下降的变化趋势。当水处理剂投加量为3.5 mg/L、助剂投加量为2.5 mg/L时,工业废水中重金属离子的去除效果最佳。

关键词：水处理剂助剂工业废水废水处理应用研究

全髋、全膝关节置换术后患者院内康复锻炼行为影响因素的质性研究

在线全文

学校读者我要写书评

暂无评论

中国护理管理 2024年第4期24卷 530-534页

作者：刘欢唐思齐吴红傅利勤吴菁海军军医大学基础医学院上海市200433 海军军医大学基础医学院护理系上海市200433 海军军医大学第一附属医院关节骨科

目的:深入探究影响关节置换术后患者院内康复锻炼行为的因素,以期为医护人员制定针对性干预措施以提高患者术后康复锻炼依从性提供指导。方法:采用目的抽样法,选取25例关节置换术后患者进行半结构式访谈,采用Colaizzi 7步分析法对访谈... 详细信息

目的:深入探究影响关节置换术后患者院内康复锻炼行为的因素,以期为医护人员制定针对性干预措施以提高患者术后康复锻炼依从性提供指导。方法:采用目的抽样法,选取25例关节置换术后患者进行半结构式访谈,采用Colaizzi 7步分析法对访谈资料进行分析。结果:关节置换术后患者院内康复锻炼行为的影响因素可归为生理病理因素、心理精神因素、社会支持因素与康复护理因素4个主题和11个亚主题。结论:生理病理、心理精神、社会支持、康复护理多方因素影响关节置换患者术后康复行为,可通过多项举措控制患者疼痛及疲劳、增强患者自我效能、利用现代化信息手段满足患者康复知识需求、灵活管理病房以提高患者康复锻炼的依从性。

关键词：关节置换康复锻炼依从性现象学研究

Nontrivial coupling of light into a defect:the interplay of nonlinearity and topology

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2020年第1期9卷 646-655页

作者： Shiqi Xia Dario Jukic Nan Wang Daria Smirnova Lev Smirnov liqin tang Daohong Song Alexander Szameit Daniel Leykam Jingjun Xu Zhigang Chen Hrvoje Buljan The MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Applied Physics Institute and School of PhysicsNankai UniversityTianjin 300457China Faculty of Civil Engineering University of ZagrebA.Kacica Miosica 2610000 ZagrebCroatia Nonlinear Physics Centre Research School of PhysicsAustralian National UniversityCanberraACT 2601Australia Institute of Applied Physics Russian Academy of ScienceNizhny Novgorod 603950Russia Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006 ShanxiPR China Institut für Physik Universitat RostockAlbert-Einstein-Strasse 2318059 RostockGermany Center for Theoretical Physics of Complex Systems Institute for Basic Science(IBS)Daejeon 34126Republic of Korea Basic Science Program Korea University of Science and TechnologyDaejeon 34113Republic of Korea Department of Physics and Astronomy San Francisco State UniversitySan FranciscoCA 94132USA Department of Physics Faculty of ScienceUniversity of ZagrebBijenička c.3210000 ZagrebCroatia

The flourishing of topological photonics in the last decade was achieved mainly due to developments in linear topological photonic structures.However,when nonlinearity is introduced,many intriguing questions arise.For example,are there universal fingerprints of the underlying topology when modes are coupled by nonlinearity,and what can happen to topological invariants during nonlinear propagation?To explore these questions,we experimentally demonstrate nonlinearity-induced coupling of light into topologically protected edge states using a photonic platform and develop a general theoretical framework for interpreting the mode-coupling dynamics in nonlinear topological systems.Performed on laser-written photonic Su-Schrieffer-Heeger lattices,our experiments show the nonlinear coupling of light into a nontrivial edge or interface defect channel that is otherwise not permissible due to topological protection.Our theory explains all the observations well.Furthermore,we introduce the concepts of inherited and emergent nonlinear topological phenomena as well as a protocol capable of revealing the interplay of nonlinearity and topology.These concepts are applicable to other nonlinear topological systems,both in higher dimensions and beyond our photonic platform.

关键词： nonlinearity topological coupling

顺铂注射液与6种质子泵抑制剂配伍溶液物理相容性考察

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

医药导报 2024年第6期43卷 965-969页

作者：童彤丁海文刘圣唐丽琴中国科学技术大学附属第一医院(安徽省立医院)药学部合肥230001

目的考察顺铂注射液与6种质子泵抑制剂配伍溶液物理相容性。方法室温条件下,将调配的低、中、高浓度(0.06、0.09、0.12 mg·mL^(-1))顺铂分别与注射用泮托拉唑钠、艾司奥美拉唑钠、奥美拉唑钠、雷贝拉唑钠、兰索拉唑和艾普拉唑钠成品输... 详细信息

目的考察顺铂注射液与6种质子泵抑制剂配伍溶液物理相容性。方法室温条件下,将调配的低、中、高浓度(0.06、0.09、0.12 mg·mL^(-1))顺铂分别与注射用泮托拉唑钠、艾司奥美拉唑钠、奥美拉唑钠、雷贝拉唑钠、兰索拉唑和艾普拉唑钠成品输液等体积混合;考察8 h内混合溶液的外观性状、丁达尔效应、pH值、浊度、不溶性微粒数和紫外吸光度值等指标变化。结果顺铂与泮托拉唑钠、艾司奥美拉唑、奥美拉唑钠和雷贝拉唑钠的混合溶液在8 h内外观均澄清透明,未产生丁达尔效应,pH值变化、浊度变化、不溶性微粒、紫外吸光度值变化均符合要求;低浓度顺铂与兰索拉唑混合溶液在6 h紫外吸光度值变化均不符合要求;中、高浓度顺铂与兰索拉唑混合溶液不溶性微粒数不符合要求;顺铂与艾普拉唑钠混合溶液所有指标均不符合要求。结论低浓度顺铂与兰索拉唑室温4 h内物理性状相容;低、中、高浓度顺铂与泮托拉唑钠、艾司奥美拉唑、奥美拉唑钠和雷贝拉唑钠8 h内相容;中、高浓度顺铂与兰索拉唑不相容,低、中、高浓度顺铂与艾普拉唑钠不相容。

关键词：顺铂注射液质子泵抑制剂物理相容性丁达尔效应不溶性微粒浊度紫外吸光度值

温针灸联合药饼灸治疗腹泻型肠易激综合征疗效观察及对肠道菌群的影响

在线全文

学校读者我要写书评

暂无评论

新中医 2024年第6期56卷 100-104页

作者：唐敏刘鸿王丽琴丽水市中医院针灸科浙江丽水323000

目的:观察温针灸联合药饼灸治疗对腹泻型肠易激综合征(IBS-D)的临床疗效及对肠道菌群的影响。方法:选取100例IBS-D患者为研究对象,采用信封法随机分为观察组和对照组各50例。对照组在饮食结构、生活习惯调整的基础上给予双歧杆菌四联活... 详细信息

目的:观察温针灸联合药饼灸治疗对腹泻型肠易激综合征(IBS-D)的临床疗效及对肠道菌群的影响。方法:选取100例IBS-D患者为研究对象,采用信封法随机分为观察组和对照组各50例。对照组在饮食结构、生活习惯调整的基础上给予双歧杆菌四联活菌片口服,观察组在对照组基础上给予温针灸、药饼灸治疗。比较2组临床疗效,以及治疗前后胃肠道激素[胃泌素(GAS)、胃动素(MTL)、血管活性肠肽(VIP)]水平、肠道菌群数量及中医证候评分。结果:治疗后,观察组总有效率为94.00%,对照组为76.00%,2组比较,差异有统计学意义(P<0.05)。治疗后,2组GAS、MTL水平均较治疗前升高(P<0.05),VIP水平较治疗前降低(P<0.05);且观察组GAS、MTL水平高于对照组(P<0.05),VIP水平低于对照组(P<0.05)。治疗后,2组乳酸杆菌、双歧杆菌数量均较治疗前增加(P<0.05),肠球菌数量较治疗前减少(P<0.05);且观察组乳酸杆菌、双歧杆菌数量高于对照组(P<0.05),肠球菌数量低于对照组(P<0.05)。治疗后,2组粪便溏池、腹痛、神疲倦怠、纳呆、肠鸣矢气等中医证候评分均较治疗前降低(P<0.05),且观察组上述各项评分均低于对照组(P<0.05)。结论:温针灸联合药饼灸治疗IBS-D可有效改善患者胃肠道激素水平及中医证候,调节肠道菌群数量,临床疗效显著。

关键词：腹泻型肠易激综合征温针灸药饼灸胃肠道激素肠道菌群

在线全文

学校读者我要写书评

暂无评论

青藏高原夏季一次冰雹过程的微物理特征

气象 2024年第6期50卷 701-710页

作者：强德厚刘俊卿丁建芳程博吴江唐利琴西藏自治区大气探测技术与装备保障中心拉萨850000 西藏自治区人工影响天气中心拉萨850000 河南省人工影响天气中心郑州450003 那曲市气象局那曲852000

为提高青藏高原冰雹过程中降水特征的认识,利用雨滴谱数据并结合探空、雷达、FY-4A卫星和分钟降水资料,分析了2020年7月23日拉萨降雹过程的微物理特征。结果表明:在降水演变特征方面,雨量计分钟降水量与DSG5降水天气现象仪接近,但开始... 详细信息

为提高青藏高原冰雹过程中降水特征的认识,利用雨滴谱数据并结合探空、雷达、FY-4A卫星和分钟降水资料,分析了2020年7月23日拉萨降雹过程的微物理特征。结果表明:在降水演变特征方面,雨量计分钟降水量与DSG5降水天气现象仪接近,但开始和结束时间、降水峰值及总降水量略有差异。此次过程中雨滴、冰雹的平均谱分布拟合曲线呈单调下降,雨滴谱符合Γ分布,雹谱符合M-P分布。降雹初期,降水粒子以小粒子居多,主要由雨滴下落中的蒸发所致;降雹后期,降水粒子谱宽变大,碰撞破碎和霰粒融化产生大量的小雨滴引起粒子数浓度剧增,数浓度增多和滴谱变宽导致雨强增大。冰雹的数浓度仅占总降水粒子数浓度的1.6%,但对地面降水量的贡献最大。根据观测,拟合得到冰雹平均末速度与直径的关系公式。

关键词：青藏高原冰雹过程微物理特征谱分布

Symmetry-protected third-order exceptional points in staggered flatband rhombic lattices

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2023年第2期11卷 225-233页

作者： YINGYING ZHANG SHIQIANG XIA XINGDONG ZHAO LU QIN XUEJING FENG WENRONG QI YAJING JIANG HAI LU DAOHONG SONG liqin tang ZUNLUE ZHU WUMING LIU YUFANG LIU School of Physics Henan Normal UniversityXinxiang 453007China MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Applied Physics Institute and School of PhysicsNankai UniversityTianjin 300457China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Institute of Physics Henan Academy of SciencesZhengzhou 450046China

Higher-order exceptional points(EPs), which appear as multifold degeneracies in the spectra of non-Hermitian systems, are garnering extensive attention in various multidisciplinary fields. However, constructing higher-order EPs still remains a challenge due to the strict requirement of the system symmetries. Here we demonstrate that higher-order EPs can be judiciously fabricated in parity–time(PT)-symmetric staggered rhombic lattices by introducing not only on-site gain/loss but also non-Hermitian couplings. Zero-energy flatbands persist and symmetry-protected third-order EPs(EP3s) arise in these systems owing to the non-Hermitian chiral/sublattice symmetry, but distinct phase transitions and propagation dynamics occur. Specifically, the EP3 arises at the Brillouin zone(BZ) boundary in the presence of on-site gain/loss. The single-site excitations display an exponential power increase in the PT-broken phase. Meanwhile, a nearly flatband sustains when a small lattice perturbation is applied. For the lattices with non-Hermitian couplings, however, the EP3 appears at the BZ center. Quite remarkably, our analysis unveils a dynamical delocalization-localization transition for the excitation of the dispersive bands and a quartic power increase beyond the EP3. Our scheme provides a new platform toward the investigation of the higher-order EPs and can be further extended to the study of topological phase transitions or nonlinear processes associated with higher-order EPs.

关键词： exceptional protected symmetry

滴灌条件下不同覆盖材料对玉米产量效益及土壤水分的影响

在线全文

学校读者我要写书评

暂无评论

寒旱农业科学 2024年第1期3卷 57-62页

作者：崔云玲张立勤唐文雪杨蕊菊汤莹甘肃省农业科学院土壤肥料与节水农业研究所甘肃兰州730070

为探明不同覆盖材料对滴灌水肥一体化条件下玉米产量和土壤水分分布的影响,以普通PE地膜和裸地为对照,分析全生物降解膜、加厚PE地膜、玉米秸秆等3种材料覆盖下对玉米产量和水分的影响。结果表明,玉米秸秆、加厚PE地膜和生物降解膜覆盖... 详细信息

为探明不同覆盖材料对滴灌水肥一体化条件下玉米产量和土壤水分分布的影响,以普通PE地膜和裸地为对照,分析全生物降解膜、加厚PE地膜、玉米秸秆等3种材料覆盖下对玉米产量和水分的影响。结果表明,玉米秸秆、加厚PE地膜和生物降解膜覆盖后玉米产量为13114.5~13708.5 kg/hm^(2),较普通PE地膜增产1.4%~6.0%;水分利用效率为24.17~25.11 kg/(mm·hm^(2)),较普通PE地膜提高2.3%~3.8%。产值与效益均高于普通PE地膜,均以玉米秸秆处理最高,分别为38383.8、24283.8元/hm^(2);生物降解膜次之,分别为37674.0、21624.0元/hm^(2);加厚PE地膜排第3,分别为36720.6、21570.6元/hm^(2)。收获后覆盖处理土壤水分均呈典型的“双峰”曲线,上层含水量高于下层,对深层土壤水分影响较大。在降水量低、蒸发量高的沿黄灌区,覆膜的主要作用是减蒸保水,用可生物降解的环保型降解地膜、易回收型的加厚PE地膜或固炭培肥型的秸秆替代普通PE膜可行。

关键词：滴灌覆盖材料玉米产量效益水分利用效率土壤水分分布