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Modulating the alloying mode in the doping-induced synthesis of Au-Pd nanowires

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Nano Research 2024年第4期17卷 3334-3343页

作者： Hui Jin Xiaoliang Wei Lecheng Zhao Jialong Yu Qiao Pan Shumin Li Qian Wang zhaotong yuan Dan Yang Donghui Zhao Hongyu Chen Yawen Wang Institute of Advanced Synthesis School of Chemistry and Molecular EngineeringJiangsu National Synergistic Innovation Center for Advanced MaterialsNanjing Tech UniversityNanjing 211816China School of Science Westlake UniversityHangzhou 310064China Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhou 310064China

Heterogeneous doping is one effective strategy for synthesizing metal alloy ***,the heterogeneous doping processes of Pd on the ultrathin Au nanowires were systematically modulated and ***-Pd alloy nanowires with various morphologies and lattice structures can be obtained by adjusting the morphology of the precursor Au nanowires and the kinetics of the heterogeneous doping *** effects of the rate of Pd reduction and the concentration of the ligand oleylamine(OAm)on the Pd deposition and alloying mode were ***,as the Pd deposition rate decreases,the Pd deposition and alloying mode switches from the island-forming Stransky–Krastanov(SK)mode to the epitaxial Frank-van der Merwe(FM)mode,and eventually to an unconventional twisting alloying mode,where the interdiffusion of Pd and Au causes drastic rearrangement of the lattice structure and formation of helical *** kinetics-related variation of alloying mode could also be observed in the Au-Ag nanowires,demonstrating a general design principle for the synthesis of alloy *** addition,the electrocatalytic performance of various Au-Pd nanowires was evaluated,and the alloy nanowire formed via the SK mode was found to be an excellent electrocatalyst for oxygen reduction and ethanol oxidation.

关键词： gold nanowires Au-Pd alloy oleylamine post-synthetic modification

Atomically Precise Water-Soluble Gold Nanoclusters:Synthesis and Biomedical Application

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Precision Chemistry 2023年第8期1卷 468-479页

作者： Qian Yan zhaotong yuan Yating Wu Chunmei Zhou Yihu Dai Xiaoyue Wan Dan Yang Xu Liu Nianhua Xue Yan Zhu Yanhui Yang Institute of Advanced Synthesis School of Chemistry and Molecular EngineeringNanjing Tech UniversityNanjing 211816China School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210093China College of Material and Chemical Engineering Minjiang UniversityFuzhou 350108China

Atomically precise water-soluble gold nanoclusters(Au NCs)protected by organic ligands have attracted growing attention in serving as unique nanomaterials with the potential to generate theranostic tools(bioimaging,biosensing,and biotherapy),due to their ultrasmall size,superior photoluminescence,good biocompatibility,and *** importantly,Au NCs afford a well-defined atomic packing structure and molecular purity,providing a superior platform to unravel the structure−performance correlations for biodistribution,biological pharmacokinetics,and excretion of Au *** this Review,we mainly survey the synthesis of water-soluble Au NCs and the recent progress in biomedicine of Au NCs,including bioimaging,biosensing,and *** effects of ligand and size on the biomedical properties are discussed in *** hope that the advances in this research area can expand the applications of Au NCs in biomedicine.

关键词： Gold nanocluster well-defined structure water-soluble biodiagnostic theranostic

A New Fracability Evaluation Approach for Shale Reservoirs Based on Multivariate Analysis: A Case Study in zhaotong Shale Gas Demonstration Zone in Sichuan, China

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Acta Geologica Sinica(English Edition) 2019年第4期93卷 1005-1014页

作者： LIU Shanyong LI Lin yuan yuan LOU Yishan LI Zhonghui Institute of Mud Logging Technology and Engineering Yangtze UniversityJingzhou 434023HubeiChina Shandong Provincial Key Laboratory of Depositional Mineralization&Sedimentary Mineral Shandong University of Science and TechnologyQingdao 266590China The Key Laboratory of Well Stability and Fluid&Rock Mechanics in Oil and Gas Reservoir of Shaanxi Province Xi’an Shiyou UniversityXi’an 710065China Research Institute of Petroleum Exploration and Development Petro ChinaZhejiang Oilfield CompanyHangzhou 310023ZhejiangChina College of Technology&Engineering Yangtze UniversityJingzhou 434020HubeiChina School of Petroleum Engineering Yangtze UniversityWuhan 430100HubeiChina

Fracability characterizes the effectiveness of hydraulic *** existing assessment methods cannot reflect the actual value of the effectiveness due to a lack of comprehensive consideration and neglect of the influences of engineering *** study aims to solve this problem by implementing geological static data and production dynamic data in multivariate analysis in zhaotong shale gas demonstration ***,the reservoir quality index(RQI)was introduced to evaluate the exploration potential by integrating the geological parameters with gray relational ***,the differences in fracturing fluid types and proppant sizes were considered,and the operating parameters were normalized on the basis of the equivalence ***,the general reservoir fracability index(GRFI)was proposed based on a dimensioned processing of the various parameters.A case study was conducted to verify the accuracy and feasibility of this new *** results demonstrate that(1)the organic carbon and gas content are adjusted to contribute the most to the calculation of the RQI,while the effective porosity contributes the least;(2)the fracturing scale is the main operating parameter determining the fracability,which has the strongest correlation with the effectiveness of fracking;and(3)the GRFI has a positive correlation with shale gas production,and the lower limit of the GRFI of 2,000 corresponds to a daily production of 50,000 m3/d;this value is defined as the threshold value of a stripper *** GRFI is consistent with the productivity trend of shale gas wells in the research block,which suggests that the new model is accurate and practical for well candidate selection.

关键词： fracability multivariate analysis equivalence principle network fracturing shale gas

Polypore funga and species diversity in tropical forest ecosystems of Africa,America and Asia,and a comparison with temperate and boreal regions of the Northern Hemisphere

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Forest Ecosystems 2024年第4期11卷 391-400页

作者： Heng Zhao Yingda Wu Zhirong Yang Honggao Liu Fang Wu Yucheng Dai yuan yuan State Key Laboratory of Efficient Production of Forest Resources School of Ecology and Nature ConservationBeijing Forestry UniversityBeijing 100083China Key Laboratory of Forest and Grassland Fire Risk Prevention Ministry of Emergency ManagementChina Fire and Rescue InstituteBeijing 102202China Yunnan Key Laboratory of Gastrodia and Fungi Symbiotic Biology Zhaotong UniversityZhaotong 657000China Yunnan Engineering Research Center of Green Planting and Processing of Gastrodia Zhaotong UniversityZhaotong 657000China

Polypores play a cru cial role in energy recycling and forest regeneration in forest *** majority of them are wood degraders;some are forest pathogens and others are ectomycorrhizal *** basidiocarps provide food and shelter for many organisms,mostly invertebrates,but also some vertebrates,as well as food and medicine for *** extensive research on the species diversity and phylogenetic relationships of polypores in recent years,there remains a lack of comprehensive understanding of their distribution patterns and species composition at the large *** of polypores from the tropical zone,including tropical Africa,tropical America,and tropical Asia,were analyzed for species diversity,distribution patterns,major taxa,and nutritional modes.A total of 1,902 polypore species was found in the three regions,representing 8 orders,46families,and 250 genera of *** orders Polyporales(especially the family Polyporaceae)and Hymenochaetales(especially the family Hymenochaetaceae)had the most prolific taxa,with their species accounting for 93.4%of the total polypores *** of 1,565(or 82.3%)of the total 1,902 species were found in only one of the three regions studied,and we treat them temporarily as"regional endemic species".Only 141species were shared among all three regions,accounting for a mere 7.4%.Tropical Africa and tropical America had the greatest number of shared species and the highest S?rensen similarity index(SC)*** forests had a higher species richness compared with temperate to boreal forests of the Northern Hemisphere,and in addition,also a higher proportion of white rot polypores compared to brown rot and ectomycorrhizal *** study outlines the distribution patterns and species diversity of polypores in the world,shedding light on their ecological significance in diverse ecosystems.

关键词： Agaricomycetes Macrofungi Species composition Wood-decay fungi

Generalized Kannan-type contraction and fixed point theorems

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Applied Mathematics(A Journal of Chinese Universities) 2023年第2期38卷 235-247页

作者： HAN Yan XU Shao-yuan MA Chao School of Mathematics and Statistics Zhaotong UniversityZhaotong 657000China Faculty of Innovation Engineering Macao University of Science and TechnologyMacaoChina School of Mathematics and Statistics Hanshan Normal UniversityChaozhou 521041China

In this paper,the generalized Kannan-type contraction in cone metric spaces over Banach algebras is *** fixed point theorems satisfying generalized contractive conditions are obtained,without appealing to completeness of X or normality of the *** continuity of the mapping is ***,we prove that the completeness in cone metric spaces over Banach algebras is necessary if the generalized Kannan-type contraction has a fixed point in *** results greatly generalize several well-known comparable results in the literature.

关键词： cone metric spaces over Banach algebras generalized Kannan-type contraction completeness asymptotic regularity xed point

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K-解析函数的K-留数定理

西南民族大学学报（自然科学版） 2009年第5期35卷 951-956页

作者：张建元昭通师范高等专科学校数学系云南昭通657000

本文在定义了K-留数的基础上,给(推)出了K-留数定理及其在实积分中的应用,所得结论是解析函数与共轭解析函数中相应结果的继续和应用.

关键词： K-解析函数 K-积分实积分 K-留数 K-留数定理

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西维来司钠对家兔早期肺爆震伤的治疗作用

中华实验外科杂志 2015年第5期32卷 1090-1092页

作者：王海龙卢兆桐袁耒张波济南军区总医院胸外科 250031

目的探讨家兔早期肺爆震伤中中性粒弹性蛋白酶（NE）的变化及西维来司钠的治疗作用.方法将30只健康新西兰大白兔随机分为：A组（对照组）和B组治疗组（西维来司钠）.治疗组伤后立即给予西维来司钠10 mg/kg耳缘静脉注射;对照组经耳缘... 详细信息

目的探讨家兔早期肺爆震伤中中性粒弹性蛋白酶（NE）的变化及西维来司钠的治疗作用.方法将30只健康新西兰大白兔随机分为：A组（对照组）和B组治疗组（西维来司钠）.治疗组伤后立即给予西维来司钠10 mg/kg耳缘静脉注射;对照组经耳缘静脉注射同等剂量的生理盐水.检测治疗前及伤后血浆中肿瘤坏死因子（TNF）-α含量及NE活性.结果西维来司钠治疗组治疗后氧分压（PO2）在1、6、12h3个时间点分别为（89.1±9.7）、（90.9±10.5）、（101.1±7.0） mmHg（1 mmHg =0.133 kPa）,较对照组的（81.3±8.7）、（74.2±7.8）、（94.2±9.8）mmHg明显升高（P＜0.05）,TNF-α含量在1、6、12h3个时间点治疗组分别为（122.8 ±13.6）、（85.1±12.9）、（81.1±7.2）ng/L,较对照组的（151.4 ±12.1）、（101.3±10.8）、（93.8±10.5）ng/L明显下降（P＜0.05）、NE活性在1、6、12、24 h各时间点治疗组分别为（70.5 ±6.1）、（104.8±5.4）、（84.5±4.6）、（56.3±8.6）ng/L,较对照组的（91.8±6.3）、（160.5±9.5）、（127.7±8.3）、（109.4±7.2） ng/L均明显下降（P＜0.05）.结论 NE活性在肺爆震伤病情发生、发展中起到重要作用.西维来司钠治疗肺爆震伤后早期可以明显抑制血浆NE活性及炎性细胞因子TNF-α的释放,减轻中性粒细胞浸润.

关键词：肺爆震伤家兔炎性因子西维来司钠

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新疆昌吉州耕地土壤有机质空间变异动态研究

地理研究 2021年第3期40卷 643-656页

作者：张兆彤李源刘国宏朱倩倩许咏梅中国科学院地理科学与资源研究所陆地表层格局与模拟重点实验室北京100101 中国科学院大学北京100049 新疆农科院土壤肥料与农业节水研究所乌鲁木齐830091

土壤有机质在提高土壤肥力和作物生产力方面发挥重要作用,研究其空间变异性可为精准施肥以及可持续的土地利用和管理提供科学依据。本文以新疆昌吉州为研究区,基于多重分形方法,使用第二次土壤普查(1980年前后)、2010年和2018年共3期土... 详细信息

土壤有机质在提高土壤肥力和作物生产力方面发挥重要作用,研究其空间变异性可为精准施肥以及可持续的土地利用和管理提供科学依据。本文以新疆昌吉州为研究区,基于多重分形方法,使用第二次土壤普查(1980年前后)、2010年和2018年共3期土壤有机质数据,计算多重分形参数来探究土壤有机质空间变异的动态。结果表明:①第二次土壤普查—2018年期间,昌吉州土壤有机质含量呈增加趋势。②第二次土壤普查—2018年期间,昌吉州土壤有机质的空间分布总体上具有非均匀的多重分形特征,土壤有机质值域范围逐渐变窄,空间分布变异性降低,趋于均一化。其中阜康市、吉木萨尔县和木垒哈萨克自治县的有机质变异程度在2010—2018年略有上升。③2018年,昌吉州土壤有机质在空间上自西向东值域分布范围逐渐变宽,变异程度增加,内部差异变大,趋向于非均匀化。④三个时期昌吉州土壤有机质数值中均是低值数据分布概率较大,其变异程度高于高值数据,仅阜康市和木垒哈萨克自治县在2018年由高值数据占主导地位。长时间的耕作经营使得土壤有机质含量有所提高,空间分布逐渐趋向均一化,但仍存在部分区域有机质较高,部分区域较低的情况。分区管理措施可以有效提高区域的整体肥力水平,应在阜康市、吉木萨尔县和木垒哈萨克自治县等有机质变异程度较高的区域继续推进精准施肥,改进灌溉和耕作措施以降低土壤有机质空间变异性。

关键词：耕地土壤有机质空间变异新疆昌吉州多重分形

乌司他丁联合地塞米松对兔爆震伤后急性肺损伤的治疗作用

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中华创伤杂志 2015年第5期31卷 461-466页

作者：代尊强袁耒邹志强卢兆桐史岩济南军区总医院实习基地济南军区总医院胸外科泰山医学院研究生院

目的探讨乌司他丁联合地塞米松对兔爆震伤后急性肺损伤（ALI）的治疗作用.方法选择健康新四兰大白兔54只中46只制作肺爆震伤ALI模型,其中38只建模成功,8只建模失败.38只按随机数字表法分为损伤组（8只）、治疗Ⅰ组（单纯给予地塞米松... 详细信息

目的探讨乌司他丁联合地塞米松对兔爆震伤后急性肺损伤（ALI）的治疗作用.方法选择健康新四兰大白兔54只中46只制作肺爆震伤ALI模型,其中38只建模成功,8只建模失败.38只按随机数字表法分为损伤组（8只）、治疗Ⅰ组（单纯给予地塞米松,10只）,治疗Ⅱ组（单纯给予乌司他丁,10只）和联合治疗组（给予地塞米松＋乌司他丁,10只）,另8只未受爆震伤动物为对照组.治疗Ⅰ、Ⅱ组和联合治疗组造模成功后0.5,12,24,36,48 h肌肉注射给予相应药物,对照组和损伤组给予等体积等渗盐水.检测伤后即刻及治疗后6,24,48,72 h各组呼吸次数、氧合指数（PaO2/FiO2）及外周静脉血肿瘤坏死因子-α（TNF-α）、白细胞介素-6（IL-6）、IL-8、中性粒细胞弹性蛋白酶（NE）含量;治疗后72 h处死动物,收集支气管肺泡灌洗液（BALF）,检测其中TNF-α、IL-6、IL-8及NE含量,取肺组织测定肺湿/干比重值,并行HE染色观察肺组织病理变化. 结果各时相点损伤组呼吸次数均较其他各组高,6h时最高（75.0±7.4）次/min,较对照组（33.0±4.5）次/min明显升高（P＜0.01）;肺湿/干比重及外周血、BALF中的TNF-α、IL-6、IL-8含量均较对照组明显升高（P＜0.01）.损伤组72 h时PaO2/FiO2最低（180.5±12.6） mmHg,较对照组（403.7±8.0） mmHg明显降低（P＜0.01）.治疗Ⅰ、Ⅱ组及联合治疗组各指标均有不同程度改善,其中联合治疗组明显优于治疗Ⅰ、Ⅱ组（P＜0.01）.与损伤组比较,治疗Ⅰ、Ⅱ组肺组织出血、水肿及炎细胞浸润均较轻,联合治疗组损伤程度最轻;治疗Ⅰ、Ⅱ组比较无明显差异. 结论乌司他丁联合地塞米松对兔爆震伤所致ALI具有一定治疗作用,且疗效明显优于单用乌司他丁或地塞米松.

关键词：爆震伤急性肺损伤地塞米松乌司他丁