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浅谈基于预防为主的防差错质量管理

广船科技 2024年第1期44卷 88-92页

作者：刘林徐波周庆文广船国际质量管理部广船国际制造部广州广船海洋工程装备有限公司

文章主要介绍了2017年广船国际为扭转2015年以来公司质量问题多发的局面,紧紧围绕以预防为主“提质量、防差错”的管理目标,以质量问题为导向,以抓好新版质量管理体系的贯彻落实为契机,以班组质量文化建设为基础,着力加强工序质量管理,... 详细信息

文章主要介绍了2017年广船国际为扭转2015年以来公司质量问题多发的局面,紧紧围绕以预防为主“提质量、防差错”的管理目标,以质量问题为导向,以抓好新版质量管理体系的贯彻落实为契机,以班组质量文化建设为基础,着力加强工序质量管理,落实质量责任,创新推进质量管理提升,加强全面质量管理,强化质量技术基础建设,实施基于预防为主的“提质量、防差错”质量管理。

关键词：船舶防差错质量管理

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积灰对光伏组件性能影响的试验研究及数值模拟

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电源学报 2024年第2期22卷 175-182页

作者：吕玉坤周庆文魏子安赵伟萍汪岳池华北电力大学能源动力与机械工程学院保定071003

探究光伏组件表面积灰对其输出特性的影响及污秽颗粒在组件表面的沉积规律,有助于制定清灰方案,提高光电转化效率。以置于华北电力大学风机大厅楼顶的光伏阵列为研究对象,进行人工布灰试验,探究了不同积灰量对组件输出功率、电流和电压... 详细信息

探究光伏组件表面积灰对其输出特性的影响及污秽颗粒在组件表面的沉积规律,有助于制定清灰方案,提高光电转化效率。以置于华北电力大学风机大厅楼顶的光伏阵列为研究对象,进行人工布灰试验,探究了不同积灰量对组件输出功率、电流和电压的影响;为探究某单一因素对污秽颗粒沉积的影响,利用COMSOL软件建立与光伏组件自然积灰试验条件相同的颗粒沉积数值模型,模拟分析了风速、湿度、颗粒粒径和污秽浓度对光伏组件表面污秽颗粒沉积的影响。试验结果表明:积灰对工作电压影响较小,对输出功率和工作电流影响较大,且当积灰密度为5.07 g/m^(2)时,组件输出功率、电流和电压的变化率分别为8.71%、6.48%和0.40%。模拟结果表明:其他条件相同时,颗粒的沉积量随风速和粒径的增大均先减小后增大,在风速3 m/s和粒径15μm时取得最小值;相同条件下,颗粒沉积量均随湿度和污秽的浓度的增大而增大。

关键词：光伏组件输出特性积污特性试验研究数值模拟

小美牛肝菌内生真菌的分离鉴定及产胞外多糖发酵条件优化

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中国酿造 2024年第7期43卷 140-146页

作者：王利肖扬微周庆雯舒志恒张俊豪胡超兰时乐湖南农业大学生物科学技术学院湖南长沙410128

该研究从小美牛肝菌(Boletus speciosus)子实体中分离筛选产胞外多糖内生真菌,通过形态学观察及分子生物学技术对筛选菌株进行鉴定。以胞外多糖产量为评价指标,采用单因素试验研究发酵培养基和发酵条件对筛选菌株产胞外多糖产量的影响,... 详细信息

该研究从小美牛肝菌(Boletus speciosus)子实体中分离筛选产胞外多糖内生真菌,通过形态学观察及分子生物学技术对筛选菌株进行鉴定。以胞外多糖产量为评价指标,采用单因素试验研究发酵培养基和发酵条件对筛选菌株产胞外多糖产量的影响,在单因素试验结果的基础上,通过响应面试验对胞外多糖产量影响较大的发酵条件进行优化。结果表明,筛选出一株产胞外多糖内生真菌,命名为XY,被鉴定为Hypomyces chlorinigenus。最佳产胞外多糖发酵培养基为:葡萄糖4%、豆粕粉3%、KH2PO40.25%、CaCl20.05%;最佳发酵条件为:发酵温度24℃、摇床转速190 r/min、接种量8%(V/V)、装液量100 mL/250 mL、发酵时间6.5 d。在此条件下,菌株XY的胞外多糖产量达到36.04 mg/mL。

关键词：小美牛肝菌内生真菌胞外多糖发酵条件优化响应面法

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夏桑菊中药渣发酵菌种筛选及其发酵条件优化

中国酿造 2024年第5期43卷 118-123页

作者：林可心周庆雯张俊豪舒志恒胡超兰时乐曾卓湖南农业大学生物科学技术学院湖南长沙410128 湖南文理学院生命与环境科学学院湖南常德415000

该研究以总生物碱含量为评价指标,从长期堆积的夏桑菊中药渣中分离筛选提高夏桑菊中药渣生料发酵中总生物碱含量的菌株,通过形态学特征、生理生化试验和16S rDNA序列分析对菌株进行鉴定,并通过单因素试验及响应面法对菌株发酵条件进行... 详细信息

该研究以总生物碱含量为评价指标,从长期堆积的夏桑菊中药渣中分离筛选提高夏桑菊中药渣生料发酵中总生物碱含量的菌株,通过形态学特征、生理生化试验和16S rDNA序列分析对菌株进行鉴定,并通过单因素试验及响应面法对菌株发酵条件进行优化。结果表明,共分离纯化出6株可提高夏桑菊中药渣中总生物碱的菌株(L-1~L-6),其中菌株L-1发酵物料中总生物碱含量最高(24.89 mg/g),其被鉴定为枯草芽孢杆菌(Bacillus subtilis)。最优发酵条件为:物料(夏桑菊中药渣80 g+麦麸10 g+豆饼粉10 g)与水的固水比1∶1(g∶mL),装料量50 g/250 mL,接种量6.7%,发酵时间6 d,初始pH值6.5。在此优化条件下,总生物碱含量达31.15 mg/g。

关键词：中药渣枯草芽孢杆菌夏桑菊总生物碱响应面优化

CoSe_(2)/MoS_(2) Heterostructures to Couple Polysulfide Adsorption and Catalysis in Lithium-Sulfur Batteries

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Chinese Journal of Chemistry 2021年第5期39卷 1138-1144页

作者： Zihan Shen qingwen zhou Huiling Yu Jiaming Tian Man Shi Chaoquan Hu Huigang Zhang Notional Laboratory of Solid State Microstructures College of Engineering and Applied SciencesInstitute of Materials Engineeringand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjingJiangsu 210046China State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Nanjing IPE Institute of Green Manufacturing Industry NanjingJiangsu 211100China

Lithium-sulfur batteries have been regarded as one of most promising next-generation energy storage devices because of their high energy density and low ***,polysulfide shuttling and slow kinetics hinder the practical *** fabricated hierarchically heterostructured CoSe_(2)/MoS_(2) nanoarrays on carbon clothes as the sulfur cathode *** resulting heterostructures facilitate electron conduction and improve electrolyte *** importantly,the composite heterostructures couple the strong poly-sulfide adsorption of CoSe_(2) and high catalytic activity of MoS_(2) to synergistically accelerate polysulfide conversion,demonstrating higher catalytic activity than their individual components.

关键词： Lithium-sulfur batteries Heterostructure Electrocatalyst CoSe_(2) MoS_(2)

Resonant Beam Communications:A New Design Paradigm and Challenges

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Journal of Communications and Information Networks 2024年第1期9卷 80-87页

作者： Yuanming Tian Dongxu Li Chuan Huang qingwen Liu Shengli zhou Future Network of Intelligence Institute and School of Science and Engineering the Chinese University of Hong KongShenzhen 518172China School of Science and Engineering and the Future Network of Intelligence Institute the Chinese University of Hong KongShenzhen 518172China College of Electronics and Information Engineering Tongji UniversityShanghai 201804China Department of Electrical and Computer Engineering University of ConnecticutStorrsCT 06250USA

Resonant beam communications (RBCom), which adopts oscillating photons between two separate retroreflectors for information transmission, exhibits potential advantages over other types of wireless optical communications (WOC). However, echo interference generated by the modulated beam reflected from the receiver affects the transmission of the desired information. To tackle this challenge, a synchronization-based point-to-point RBCom system is proposed to eliminate the echo interference, and the design for the transmitter and receiver is discussed. Subsequently,the performance of the proposed RBCom is evaluated and compared with that of visible light communications(VLC)and free space optical communications (FOC). Finally, future research directions are outlined and several implementation challenges of RBCom systems are highlighted.

关键词： resonant beam communications(RBCom) wireless optical communications(WOC) echo interference elimination mobility multiple access

Auxin-brassinosteroid crosstalk:Regulating rice plant architecture and grain shape

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The Crop Journal 2024年第4期12卷 953-963页

作者： Meidi Wu Jing zhou Qian Li Dunfan Quan qingwen Wang Yong Gao Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology Yangzhou UniversityYangzhou 225009JiangsuChina Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of EducationYangzhou UniversityYangzhou 225009JiangsuChina

Rice(Oryza sativa)plant architecture and grain shape,which determine grain quality and yield,are modulatedby auxin and brassinosteroid via regulation of cell elongation and *** review the signaltransduction of these h... 详细信息

关键词： Auxin Brassinosteroid Auxin-brassinosteroid crosstalk Plant architecture Grain shape

Silicon photonic integrated interrogator for fiber-optic distributed acoustic sensing

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Photonics Research 2024年第3期12卷 465-473页

作者： ZHICHENG JIN JIAGENG CHEN YANMING CHANG qingwen LIU ZUYUAN HE State Key Laboratory of Advanced Optical Communication System and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Distributed acoustic sensing(DAS)technology has been a promising tool in various ***,the large size and relatively high cost of DAS equipment composed of discrete devices restrict its further popularization to some degree,and the photonic integration technology offers a potential *** this paper,we demonstrate an integrated interrogator for DAS on the silicon-on-insulator(SOI)*** design of the chip revolves around a Mach–Zehnder modulator(MZM)transmitter and a dual-quadrature and dualpolarization coherent *** integrated interrogator supports multiple DAS schemes,including the time-gated digital optical frequency domain reflectometry(TGD-OFDR),which is adopted for system performance evaluation.59■strain resolution in 12.1km sensing fiber with 1.14 m spatial resolution(SR)is ***,along 49.0 km sensing fiber,81■strain resolution with 3.78 m SR is *** results show that the integrated interrogator has comparable performance to the discrete DAS *** the best of our knowledge,this is the first dedicated on-chip DAS interrogator,which validates the effectiveness of the blend of photonics integration and DAS technology.

关键词： fiber polarization modulator

Isotopic insights on quantitative assessments of interaction of eco-hydrological processes in multi-scale karst watersheds

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International Soil and Water Conservation Research 2024年第1期12卷 156-170页

作者： Zhuo Hao Yang Gao qingwen Zhang Wen Wen Agricultural Clean Watershed Research Group Institute of Environment and Sustainable Development in AgricultureCAASBeijing100081China Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchCASBeijing100101China School of Humanities and Social Sciences Beijing Institute of TechnologyBeijing100081China

The dynamics of hydrological processes and the storage mechanisms of karst water resources are the most important issues in karst *** impact of environmental changes on water quantity,and the evaluation and quantification of eco-hydrological processes remain poorly *** this study,high-frequency continuous monitoring in multi-scale karst watersheds in Southwest China combined the approaches of water isotopes and the hybrid single-particle lagrangian integrated trajectory(HYSPLIT)model to identify the recharge mechanisms between atmospheric vapor,rainfall,surface water,and groundwater,and to reveal the interaction of eco-hydrological *** dominant moisture sources in Puding(PD)County were the Indian Ocean(43-69%)and local moisture(24-33%).Theδ^(18)O and deuterium excess(d-excess)values showed a positive correlation indicating that secondary or sub-cloud evaporation was prominent in the wet *** water line-conditioned excess(lc-excess)indicated that karst water interacted with recent precipitation,groundwater,and evaporation across *** to its specific hydrogeological structure,surface water and rainwater have a higher contribution rate to groundwater *** Chenqi stream replenished the Houzhai River mainly in the form of groundwater,with percentages ranging from 38.1 to 93.5%in the wet season,and 47.8-80.1%in the dry *** the Houzhai outlet,surface water and groundwater interconverted frequently with a percentage of 45.6-49.1%.We believe this is the first systematic study to quantify the supply relationship between water vapor transport,rainfall,surface water and groundwater in the Chinese karst zone,making a significant move forward in the field of karst hydrological processes and improving the efficiency of water resource evaluation and management.

关键词： Stable isotope Moisture sources Water cycle Karst watersheds