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科技管理研究 2023年第20期43卷 167-175页

作者：樊梦婷周立军杨静虞舒文中国计量大学经济与管理学院浙江杭州310018

对于技术标准化活动这一异质性主体之间复杂利益关系动态演变过程,随着标准组织在其中的重要性与日俱增,有必要将标准组织作为博弈主体,深入探讨企业、标准组织和政府三者利益互动关系的影响,研究推进技术标准化的有效策略。为此构建三... 详细信息

对于技术标准化活动这一异质性主体之间复杂利益关系动态演变过程,随着标准组织在其中的重要性与日俱增,有必要将标准组织作为博弈主体,深入探讨企业、标准组织和政府三者利益互动关系的影响,研究推进技术标准化的有效策略。为此构建三方策略动态演化博弈模型,分别从企业投入技术标准化的成本、收益,标准组织意愿的高、低,政府不同激励模式等方面分析其对系统演化过程的影响,并对相关参数进行仿真模拟分析。结果表明:企业、标准组织及政府在技术标准化系统中达到演化稳定点的策略组合为{投入,高意愿,不激励},企业与标准组织的策略选择对系统演化具有重要影响。其中,企业投入技术标准化的收益、成本和不投入技术标准化的收益、损失均显著影响企业和政府的演化结果,但对标准组织策略影响相对较小;政府补贴在技术标准化初期的作用效果最佳,企业积极投入更能促使标准组织参与技术标准化活动,有利于提高系统稳定速率。据此,提出应多措并举提高企业对技术标准的投入意愿,并通过给予技术标准相关的开发项目调动标准组织的参与意愿。

关键词：技术标准标准化标准制定标准组织演化博弈

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Telecom-Wavelength Organic Single-Crystal Lasers Triggered by the Molecular Conformation-Dependent Cascaded Proton Transfer Processes

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ADVANCED FUNCTIONAL MATERIALS 2023年第20期33卷

作者： Wu, Jun-Jie yu, shuwen Liu, Yanping Yan, Chang-Cun Yang, Wan-Ying Xie, Wanfeng Wang, Xue-Dong Sun, Chaofan Liao, Liang-Sheng Soochow Univ Inst Funct Nano & Soft Mat FUNSOM Jiangsu Key Lab Carbon Based Funct Mat & Devices 199 Renai Rd Suzhou 215123 Jiangsu Peoples R China Chinese Acad Sci Dalian Inst Chem Phys Div Energy Res Resources Dalian 116023 Liaoning Peoples R China Zhejiang Univ Ctr Chem High Performance & Novel Mat Dept Chem Hangzhou 310027 Zhejiang Peoples R China Qingdao Univ Sch Elect & Informat Qingdao 266041 Peoples R China Northeast Forestry Univ Coll Sci Harbin 150040 Heilongjiang Peoples R China Macau Univ Sci & Technol Macao Inst Mat Sci & Engn Taipa 999078 Peoples R China

Organic semiconductor molecules possess chemical tunability and large stimulated emission cross section, representing a promising candidate for laser gain medium. However, for the pursuit of telecom-wavelength organic lasers, one of the major obstacles is the lack of effective energy-level systems with high optical gain to compensate the exciton deactivation losses. Herein, the effects of molecular conformation-dependent distinct cascaded proton-transfer six-level energy gain systems on lasing emission properties are systematically investigated based on organic polymorphs, proving that an energy-level gain system without reversible transition channels is more conducive to the formation of efficient population inversion and high optical gain. Notably, the one-way irreversible six-level energy system of beta-phase polymorph supports more favorable population inversions than the two-way reversible six-level system of alpha-phase polymorph due to the irreversible excited-state second proton transfer and the irreversible ground-state recovery, achieving the amplified spontaneous emission at telecom-wavelength of approximate to 850 nm. This study provides useful guidelines for constructing efficient energy-level gain systems, promoting the exploration of high-gain organic semiconductor laser materials from visible to near-infrared region.

关键词： energy-level systems keto-enol tautomerism polymorphs proton transfer processes telecom-wavelength organic solid-state lasers

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Different dose of new generation proton pump inhibitors for the treatment of Helicobacter pylori infection: A meta-analysis

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INTERNATIONAL JOURNAL OF IMMUNOPATHOLOGY AND PHARMACOLOGY 2021年 35卷

作者： Gao, Wenwen Zhang, Xiang Yin, Yanhui yu, shuwen Wang, Lu Shandong First Med Univ Dept Pharm Cent Hosp Jinan 250013 Shandong Peoples R China Shandong Univ Dept Pharm Qilu Hosp Jinan 250013 Shandong Peoples R China Shandong Univ Phase Clin Trial Ctr 1 Qilu Hosp Jinan 250013 Shandong Peoples R China Shandong Univ NMPA Key Lab Clin Res & Evaluat Innovat Drugs Jinan 250013 Shandong Peoples R China

The evidence on whether high-dose new generation proton pump inhibitors (PPIs) including rabeprazole and esomeprazole achieve a higher eradication rate of Helicobacter pylori has not been assessed. The primary comparison was eradication and adverse events (AEs) rate of standard (esomeprazole 20 mg bid, rabeprazole 10 mg bid) versus high-dose (esomeprazole 40 mg bid, rabeprazole 20 mg bid) PPIs. Sub-analyses were performed to evaluate the eradication rate between Asians and Caucasians, clarithromycin-resistance (CAM-R) strains, and clarithromycin-sensitivity (CAM-S) strains of different dose PPIs. We conducted a literature search for randomized controlled trials comparing high-with standard-dose esomeprazole and rabeprazole for H. pylori eradication and AEs. A total of 12 trials with 2237 patients were included. The eradication rate of high-dose PPIs was not significantly superior to standard-dose PPIs regimens: 85.3% versus 84.2%, OR 1.09 (0.86-1.37), P = 0.47. The high dose induced more AEs than those of the standard dose, but didn't reach statistical significance (OR 1.25, 95% CI: 0.99-1.56, P = 0.06). Subgroup analysis showed that the difference in eradication rate of PPIs between high- and standard-dose groups were not statistically significant both in Asians (OR 0.99, 95% CI 0.75-1.32, P = 0.97) and Caucasians (OR 1.27, 95% CI 0.84-1.92, P = 0.26). Furthermore, there were similar eradication rates in CAM-S (OR 1.2;95% CI 0.58-2.5;P = 0.63) and CAM-R strains (OR 1.08;95% CI 0.45-2.56;P = 0.87) between the standard-and high-dose groups. High and standard dosages of new generation of the PPIs showed similar H. pylori eradication rates and AEs as well as between Asian versus Caucasian populations, with or without clarithromycin-resistance. However, further studies are needed to confirm.

关键词： Clarithromycin resistance different dose esomeprazole ethnic difference Helicobacter pylori meta-analysis new generation proton pump inhibitors rabeprazole

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High-performance microporous polymer membranes prepared by interfacial polymerization for gas separation

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JOURNAL OF MEMBRANE SCIENCE 2019年 573卷 425-438页

作者： yu, shuwen Li, Shichun Liu, yu Cui, Sheng Shen, Xiaodong Nanjing Tech Univ Coll Mat Sci & Engn Nanjing 210009 Jiangsu Peoples R China China Acad Engn Phys Inst Chem Mat Mianyang 621900 Peoples R China Nanjing Tech Univ Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct Nanjing 210009 Jiangsu Peoples R China Univ Cambridge Dept Mat Sci & Met Cambridge CB3 0FS England

Microporous polymers possessing good processability and low cost show promising applications for large-scale industrial membrane separation. The relatively low gas selectivity and physical aging of microporous polymer membranes are current challenges which become more serious for ultrathin membranes. Crosslinking is an effective way to improve gas selectivity and physical aging resistance of glassy polymers, and the cross-linked ultrathin membranes can be directly produced by interfacial polymerization (IP). However, there are only a few reports of IP formed microporous polymer membranes, and the reported gas separation performance is not satisfying. In this work, ultrathin microporous polyarylate (PAR) membranes were prepared by IP of 5,5', 6,6'-tetrahydroxy-3,3,3',3'-tetramethylspirobisindane (TTSBI) and trimesoyl chloride (TMC). The crosslinking structure, molar ratio of TTSBI to TMC (n((TTSBI))/n((TMC))) in PAR, and membrane thickness characterized by zeta potential measurements, X-ray photoelectron spectroscopy and scanning electronic microscope were optimized by adjusting IP parameters such as pH value of aqueous phase that decides the hydrolysis of both TTSBI and TMC in IP, and the concentrations of TTSBI and TMC. The microporous structures of PAR characterized by CO2 adsorption are highly relevant to the n((TTSBI))/n((TMC)) in PAR. The resulted membranes exhibit CO2 permeance in a wide range of 100-2115 GPU with CO2/N-2 selectivity of 45-21 that is a remarkable improvement in gas separation performance of IP formed microporous polymer membranes and also shows significant advantages over other reported ultrathin microporous polymer membranes. In addition, the membranes also exhibit excellent stability, and only 29% decrease in CO2 permeance was observed after 180 h aging. This work provides an effective strategy to fabricate high-performance and stable microporous polymer membranes by IP, which is expected to push the particle applications of microporous poly

关键词： Microporous polymer Ultrathin membrane Thin film composite (TFC) Gas separation Interfacial polymerization

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Hydroxylated non-fullerene acceptor for highly efficient inverted perovskite solar cells

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ENERGY & ENVIRONMENTAL SCIENCE 2021年第12期14卷 6536-6545页

作者： Yang, Qing Liu, Xuan yu, shuwen Feng, Zhendong Liang, Lixin Qin, Wei Wang, Youyang Hu, Xiaobo Chen, Shaoqiang Feng, Zhaochi Hou, Guangjin Wu, Kaifeng Guo, Xin Li, Can Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Dalian Natl Lab Clean Energy Dalian 116023 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China East China Normal Univ Dept Elect Engn Shanghai 200241 Peoples R China

Inverted perovskite solar cells (i-PSCs) manifest negligible hysteresis and potential to construct tandem solar cells attracting much attention, but their power conversion efficiency (PCE) still lags behind those of conventional ones due to non-radiative recombination from defect states and mismatched energylevel alignment for electron transport. Herein, we report on employing a hydroxylated non-fullerene acceptor (NFA), termed IT-DOH, to modify the interface between the perovskite and the electron transport layer (ETL) for reduced defects and improved electron transport. Compared with -CN and -C=O groups in the parent molecule ITIC, additional -OH groups in IT-DOH can further suppress defect states by interacting with undercoordinated Pb2+. More importantly, the conjugated planes of IT-DOH can be elongated by intermolecular hydrogen-bonding interactions, leading to a long-range-ordered molecular arrangement and face-on orientation, which facilitates the electron transport from the perovskite to the ETL through IT-DOH molecules. Consequently, a record PCE of 22.09% among reported i-PSCs modified by NFAs is achieved from IT-DOH-treated i-PSCs. Our work highlights the importance of molecular ordering and orientation of the NFAs as interfacial materials, and provides a guideline to design NFAs by hydroxylation for highly efficient and stable i-PSCs.

关键词： Perovskite solar cells

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Particulate matter of air pollution may increase risk of kidney failure in IgA nephropathy

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KIDNEY INTERNATIONAL 2022年第6期102卷 1382-1391页

作者： Luo, Chengwen Ouyang, Yan Shi, Sufang Li, Guisen Zhao, Zhanzheng Luo, Huimin Xu, Feifei Shao, Leping Chen, Zijin yu, shuwen Jin, yuanmeng Xu, Jing Du, Wen Fang, Zhengying Hussain, Hafiz Muhammad Jafar Zhang, Wen Wang, Weiming Cui, Yidan Zhang, Hong Chen, Nan yu, Zhangsheng Xie, Jingyuan Shanghai Jiao Tong Univ Ruijin Hosp Inst Nephrol Sch Med Shanghai Peoples R China Shanghai Jiao Tong Univ Sch Life Sci & Biotechnol Dept Bioinformat & Biostat Shanghai Peoples R China Wenzhou Med Univ Taizhou Hosp Zhejiang Prov Evidence Based Med Ctr Zhejiang Peoples R China Peking Univ First Hosp Dept Med Renal Div Beijing Peoples R China Sichuan Prov Peoples Hosp Dept Nephrol Chengdu Peoples R China Zhengzhou Univ Affiliated Hosp 1 Dept Nephrol Zhengzhou Peoples R China First Peoples Hosp Yunnan Prov Dept Nephrol Kunming Peoples R China Wenzhou Med Univ Affiliated Hosp 1 Dept Nephrol Wenzhou Peoples R China Qingdao Municipal Hosp Dept Nephrol Qingdao Peoples R China Shanghai Jiao Tong Univ Clin Res Ctr Sch Med Shanghai Peoples R China Shanghai Jiao Tong Univ Ruijin Hosp Inst Nephrol Sch MedDept Nephrol 197 Ruijin Er Rd Shanghai 200025 Peoples R China Shanghai Jiao Tong Univ Sch Life Sci & Biotechnol Dept Bioinformat & Biostat 800 Dong Chuang Rd Shanghai 200240 Peoples R China

IgA nephropathy (IgAN) is characterized by deposition of galactose-deficient IgA1 (Gd-IgA1) in glomerular mesangium associated with mucosal immune disorders. Since environmental pollution has been associated with the progression of chronic kidney disease in the general population, we specifically investigated the influence of exposure to fine particulate matter less than 2.5 mm in diameter (PM2.5) on IgAN progression. Patients with biopsy-proven primary IgAN were recruited from seven Chinese kidney centers. PM2.5 exposure from 1998 to 2016 was derived from satellite aerosol optical depth data and a total of 1,979 patients with IgAN, including 994 males were enrolled. The PM2.5 exposure levels for patients from different provinces varied but, in general, the PM2.5 exposure levels among patients from the north were higher than those among patients from the south. The severity of PM2.5 exposure in different regions was correlated with regional kidney failure burden. In addition, each 10 mg/m3 increase in annual average concentration of PM2.5 exposure before study entry (Hazard Ratio, 1.14;95% confidence interval, 1.06-1.22) or time-varying PM2.5 exposure after study entry (1.10;1.01-1.18) were associated with increased kidney failure risk after adjustment for age, gender, estimated glomerular filtration rate, urine protein, uric acid, hemoglobin, mean arterial pressure, Oxford classification, glucocorticoid and renin-angiotensin system blocker therapy. The associations were robust when the time period, risk factors of cardiovascular diseases or city size were further adjusted on the basis of the above model. Thus, our results suggest that PM2.5 is an independent risk factor for kidney failure in patients with IgAN, but these findings will require validation in more diverse populations and other geographic regions.

关键词： end-stage renal disease fine particulate matter 2 5 mm in aerodynamic diameter galactose-deficient IgA1 IgA nephropathy

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Particulate Oxynitride Photoanodes Assembled with Transparent Electron-Collecting Oxide Nanorod Arrays

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INORGANIC CHEMISTRY 2019年第19期58卷 13108-13114页

作者： Xiong, Feng-Qiang Dong, Beibei yu, shuwen East China Univ Technol Sch Chem Biol & Mat Sci Nanchang 330013 Jiangxi Peoples R China Chinese Acad Sci Dalian Inst Chem Phys Dalian Natl Lab Clean Energy Dalian 116023 Liaoning Peoples R China

The collection of photogenerated electrons is commonly a bottleneck in photoelectrochemical water oxidation on a particulate photoanode. Herein, a new strategy called "array insertion" for particulate photoanode preparation is proposed to improve electron collection. ZnO nanorod arrays are inserted between LaTiO2N particles and Al-doped ZnO (AZO) substrates via epitaxial electrodeposition, which make electronic connections. Using this methodology, charge separation efficiency is improved drastically, and the photocurrent at 1.23 V-RHE is enhanced by more than 1 order of magnitude, because the obstacle of electron collection in the particulate LaTiO2N photoanodes is overcome.

关键词： Photonics Oxides Nanoparticles Metal oxide nanoparticles Nanorods

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Pore structure characterization and gas transport property of the penetrating layer in composite membranes

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SEPARATION AND PURIFICATION TECHNOLOGY 2019年 211卷 252-258页

作者： Li, Shichun Zhang, Haobin yu, shuwen Hou, Jingwei Huang, Shiliang Liu, yu China Acad Engn Phys Inst Chem Mat Mianyang 621900 Peoples R China Univ Cambridge Dept Mat Sci & Met Cambridge CB3 0FS England Nanjing Tech Univ Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct Nanjing 210009 Jiangsu Peoples R China

Polymeric composite membranes have emerged as the leading technology in industrial gas separation fields for decades, but there are still several unsolved fundamental problems on the interface between layers in composite membranes, which hinders the development of membranes with better performance. The penetrating layer locating between the selective layer and the supporting layer of composite membranes could strongly affect both gas separation performance and durability of membranes, the understanding of the penetrating layer is however limited. The bottleneck in studying penetrating layer is structure characterization, as the penetrating layer is hard to be distinguished from the selective layer and the supporting layer by an electronic microscope. Here, the nanoporous structure of the penetrating layer in the polydimethylsiloxane (PDMS)/polysulfone (PSf) composite membrane was characterized by small angle X-ray scattering (SAXS) that measures variations of nano-pore size distribution of membranes. The penetration degree was quantitatively described as a relative reduction in gyration radius of pores measured by SAXS. In the penetration process, the repeated cycles of penetration and drying of PDMS solution in pores occurred, which filled the small pores and divided the big pore into smaller ones. Moreover, the effects of penetrating layers on the gas transport property of composite membranes were estimated by using restriction factor in which the restriction effect of the supporting layer was also considered, and high correlation between penetration degree and restriction factor was presented.

关键词： Composite membranes Penetration SAXS Restriction factor Gas separation

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焊接残余应力及变形对各焊接结构动力特性的影响

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热加工工艺 2021年第21期50卷 140-145,151页

作者：俞树文罗宇赵晟王阳上海交通大学船舶海洋与建筑工程学院上海200240

为了实现结构的减振降噪,研究结构动力特性很有必要。目前,焊接过程中产生的残余应力及变形对结构动力特性的影响常常被人忽视,本文针对对接接头、T型接头及加筋板焊接结构,分别研究焊接残余应力及变形对其动力特性的影响。结果表明:焊... 详细信息

为了实现结构的减振降噪,研究结构动力特性很有必要。目前,焊接过程中产生的残余应力及变形对结构动力特性的影响常常被人忽视,本文针对对接接头、T型接头及加筋板焊接结构,分别研究焊接残余应力及变形对其动力特性的影响。结果表明:焊后残余应力导致两种接头及加筋板焊接结构各阶固有频率均有不同程度的变化;考虑焊接变形效应后,各阶固有频率略有变化;随着热输入的增加,两种接头及焊接结构内部的平均应力逐渐提高,与无残余应力结构的固有频率偏差逐渐增大。本研究为通过优化焊接工艺实现减振降噪提供了一个理论分析的方法。

关键词：动力特性分析固有频率残余应力焊接变形

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新疆喀什枣树梨圆蚧发生危害规律及防控药剂筛选

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中国果树 2023年第8期 88-91,F0002页

作者：李辉辉朱晓锋俞淑雯秦坤焕赵莉新疆农业大学农学院乌鲁木齐830091 新疆农业科学院植物保护研究所农业农村部西北荒漠作物有害生物综合治理重点实验室特色林果产业国家地方联合工程研究中心

梨圆蚧为新疆地区果树主要害虫之一,为安全高效防控梨圆蚧,通过对喀什地区枣园梨圆蚧[Quadraspidiotus perniciosus(Comstock)]的系统调查发现:该虫1年发生3代,以2龄若虫固着在枝条上越冬,翌年4月上旬开始发育,5月中下旬产仔;第1代若虫... 详细信息

梨圆蚧为新疆地区果树主要害虫之一,为安全高效防控梨圆蚧,通过对喀什地区枣园梨圆蚧[Quadraspidiotus perniciosus(Comstock)]的系统调查发现:该虫1年发生3代,以2龄若虫固着在枝条上越冬,翌年4月上旬开始发育,5月中下旬产仔;第1代若虫6月上旬出现,6月下旬为盛期,危害嫩枝和叶片;第2代若虫7月下旬出现,8月上旬达到盛期,危害枝条、叶片和果实;第3代若虫9月上旬出现,9月中旬达到盛期,主要危害成熟果实。在防治上应以第1、2代若虫初孵期(6月上旬和7月下旬)为关键时期。通过对防控药剂的筛选发现:供试4种药剂(70%啶虫脒水分散粒剂+有机硅助剂、22%氟啶虫胺腈悬浮剂、25%螺虫·吡丙醚悬浮剂、5%阿维菌素水乳剂+有机硅助剂)对梨圆蚧的防治效果均在90%以上,均可用于枣园梨圆蚧的防控。

关键词：梨圆蚧枣园发生规律危害规律药剂筛选

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