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Chinese Journal of Acoustics 2024年第2期43卷 155-172页

作者： chen Changxiong PENG Zilong SONG Hao FAN Jun XUE Yaqiang School of Energy and Power Engineering Jiangsu University of Science and TechnologyZhenjiang 212100 Systems Engineering Research Institute Beijing100094 State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240

A fast prediction method is presented for the full-space bistatic scattering sound field of the underwater stiffened double cylindrical shell. The scattering sound field is represented as the product of the acoustic scattering transfer function and the sound source density function. The target surface grid information and a small amount of simulation or experimentation multistatic scattering sound pressure data are used as known information to forecast other bistatic scattering sound fields with the help of numerical integration, matrix theory, and least squares method. The scattered sound pressure data from simulation of the finite element method(FEM) and experimental tests are used as input to calculate the multistatic scattered sound field of the underwater stiffened double cylindrical shell, respectively. The calculated results are compared with those calculated exclusively by the FEM, and the effects of different input data and calculation frequencies on the calculation results are discussed. The results show that the proposed method can predict the full-space bistatic scattered sound field of the target when the surface structure and part of the scattered sound field data are known. The greater amount of known scattered sound pressure data and lower computational frequency lead to higher predicted accuracy.

关键词： sound scattering cylindrical

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济南市南部山区水土流失变化分析

山东水利 2021年第11期 54-55,58页

作者：陈振江李环孙雪梅济南市水文中心山东济南250014

根据济南市济西水土保持监测站2016—2018年不同坡度径流小区径流量、泥沙量数据分析,推算济南市南部山区不同坡度径流泥沙总量,对济南市南部山区水土流失变化情况进行分析,为济南市水土保持治理和研究工作提供技术支撑。

关键词：济南市南部山区水土流失径流小区

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溶剂再生塔操作异常的原因及调节

硫酸工业 2017年第4期 36-38页

作者：陈志刚王磊陈振江中国石油天然气股份有限公司乌鲁木齐石化公司新疆乌鲁木齐830019

分析了炼油厂溶剂再生装置运行中贫胺液系统出现胺液有效浓度下降、贫液不合格等异常现象的原因是胺液降解。介绍了对再生塔操作的优化调整,其中包括置换胺液系统、控制再生压力、再生塔底温度和重沸器温度以及对胺液再生。采取调整措施... 详细信息

分析了炼油厂溶剂再生装置运行中贫胺液系统出现胺液有效浓度下降、贫液不合格等异常现象的原因是胺液降解。介绍了对再生塔操作的优化调整,其中包括置换胺液系统、控制再生压力、再生塔底温度和重沸器温度以及对胺液再生。采取调整措施后,贫液质量得以保证,并避免了下游干气、液化气等脱硫单元出现质量事故。

关键词：再生塔胺液再生运行酸性气

Effect of solidification mode on microstructure evolution and properties of magnesium alloy with long-period stacking ordered phase

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Journal of Iron and Steel Research(International) 2024年第5期31卷 1127-1138页

作者： Hao Li Hong-mei chen Xu Zhang Qian-hao Zang Jing Zhang Di Feng Yan-xin Qiao Yu-hang Guo School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang212100JiangsuChina School of Metallurgy and Materials Engineering Jiangsu University of Science and TechnologySuzhou215600JiangsuChina

The solidification methods of electromagnetic stirring(EMS)and non-electromagnetic stirring were employed to prepare Mg–6Gd–3Y–xZn–0.6Zr(x=1,1.5,2,3)*** evolution of alloy microstructures and the changes in properties were analyzed for different Zn *** has been observed that in alloys without electromagnetic stirring,as the Zn content increases,the alloy structure gradually *** primary second phase transitions from Mg5RE phase to long-period stacking ordered(LPSO)phase,resulting in improved hardness and *** alloys subjected to electromagnetic stirring,there is a relatively higher content of the second phase,primarily consisting of LPSO *** applying electromagnetic stirring,the quantity and the type of LPSO phase in the alloy *** alloy structure becomes more uniform with electromagnetic stirring,resulting in increased hardness and reduced hardness gradients within the *** mechanical properties of alloys with electromagnetic stirring are superior to those without electromagnetic stirring.

关键词： Rare earth magnesium alloy LPSO phase Electromagnetic stirring Casting Property

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姜黄素胶原微球的制备工艺研究

湖北中医学院学报 2008年第3期10卷 48-50页

作者：陈振江殷丹于伟湖北中医学院药学院湖北武汉430061

目的:研究姜黄素胶原微球的制备工艺。方法以新鲜的大鼠鼠尾肌腱为原材料,采用乳化缩聚法制备姜黄素胶原微球。结果得到的微球粒径小于100目。结论通过乳化缩聚法制成一种缓控释靶向给药新剂型——微球。

关键词：胶原蛋白姜黄素微球制备工艺

Unveiling the Contribution of Lactic Acid to the Passivation Behavior of Ti-6Al-4V Fabricated by Laser Powder Bed Fusion in Hank’s Solution

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Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 102-118页

作者： Yu-Hang Chu Liang-Yu chen Bo-Yuan Qin Wenbin Gao Fanmin Shang Hong-Yu Yang Lina Zhang Peng Qin Lai-Chang Zhang School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang212100China Foshan(Southern China)Institute for New Materials Foshan528200China Key Laboratory of Automobile Materials Ministry of Education and Department of Materials Science and EngineeringJilin UniversityChangchun130025China Centre for Advanced Materials and Manufacturing School of EngineeringEdith Cowan University270 Joondalup DriveJoondalupPerthWA6027Australia

In actual physiological environments,bacteria can activate the immune system and release lactic ***,the detailed contribution of lactic acid to the passivation behavior of titanium(Ti)alloys is still *** current work investigated the in vitro passivation behavior of Ti-6Al-4V(TC4)alloys fabricated by laser powder bed fusion in Hank's solution with and without adding lactic *** methods,inductively coupled plasma atomic emission spectrometer,and X-ray photoelectron spectroscopy were jointly *** lactic acid decreases the corrosion resistance of samples by degrading the formed passive *** film formed in the(lactic acid)-containing solution exhibits a higher level of oxygen vacancies and a lower thickness,attributed to the suppressed formation of Ti^(4+)transformed from Ti^(3+)and Ti^(2+).Moreover,the presence of lactic acid would increase the open circuit potential,relieve the ions release,and hinder the deposition of calcium phosphates within 24 h immersion.

关键词： Titanium alloy Corrosion behavior Passive film Lactic acid Laser powder bed fusion

Functional groups and seasonal diversity of crustacean zooplankton in adjacent waters of Haizhou Bay,South Yellow Sea

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Journal of Oceanology and Limnology 2023年第3期41卷 1007-1023页

作者： Zeqi ZHENG Shunan FU Yixuan LI Ruping GE Hongju chen zhenjiang YE Yunyun ZHUANG Guangxing LIU Key Laboratory of Marine Environment Ministry of EducationOcean University of ChinaQingdao 266100China Marine Ecology and Environmental Science Laboratory Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Fisheries College Ocean University of ChinaQingdao 266003China

Zooplankton are important linkages in the food web and can respond nonlinearly to environmental *** organisms thrive from spring to ***,it is crucial to understand how ecological functions of zooplankton communities may shift under seasonal environmental changes during this *** were collected from May to August(May,June-Ⅰ,June-Ⅱ,July-Ⅰ,July-Ⅱ,and August)in 2018 in Haizhou Bay,Jiangsu,East China for zooplankton and environmental *** accounted for 75 out of 134 zooplankton taxa and 91.8%of total zooplankton *** average abundance of crustacean varied between 2824.6±635.4 inds./m3 in July-Ⅱand 6502.7±1008.8 inds./m3 in June-Ⅱ.Multivariate analyses results showed that the dissimilarity of community increased gradually in the time *** length,feeding type,trophic group,and reproduction mode were used to investigate crustacean community ***-based functional groups contained species with similar ecological *** diversity fused the differences of species and *** proportion of large-sized species(2-5 mm)decreased with the increasing proportion of medium-sized species(1-2 mm).The proportion of current feeders increased with the drop in the proportion of mixed *** species increased with decreasing free spawners,and omnivores-carnivores increased with decreasing *** additive models suggested that temperature was the main driver of variations in crustacean zooplankton *** identified functional groups varied with increasing ***-herbivorous copepods declined(90.0%-68.0%),whereas the parthenogenetic cladocerans increased(0-24.1%).The small egg-brooding ambush copepods fluctuated(6.5%-9.3%)with increasing water *** other functional groups changed *** diversity also varied according to temperature *** community structure and ecological function of crustacean zooplankton community

关键词： zooplankton trait functional group diversity Yellow Sea Haizhou Bay

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江苏地区荷斯坦成母牛长寿性状遗传参数估计

畜牧兽医学报 2024年第3期55卷 1030-1039页

作者：夏淑雯陈坤琳沈阳阳安振江赵芳丁强仲跻峰林志平王慧利江苏省农业科学院畜牧研究所南京210014 江苏省畜禽精准育种工程研究中心南京210014 农业农村部种养结合重点实验室南京210014 南京农业大学动物科技学院南京210095 江苏优源奶业产业研究院有限公司南京211100

旨在估计荷斯坦成母牛长寿性状遗传参数及评估育种值,为提高生产性能及实施平衡育种提供参考。本研究共收集江苏地区9个规模化牧场2017—2023年间19 756头荷斯坦成母牛的离群记录,分析牛只的长寿性和淘汰情况。利用R软件的GLM程序对影... 详细信息

旨在估计荷斯坦成母牛长寿性状遗传参数及评估育种值,为提高生产性能及实施平衡育种提供参考。本研究共收集江苏地区9个规模化牧场2017—2023年间19 756头荷斯坦成母牛的离群记录,分析牛只的长寿性和淘汰情况。利用R软件的GLM程序对影响奶牛长寿性状的固定效应(包括牧场、出生年季、头胎产犊月龄)进行显著性检验;采用BLUPF90软件进行遗传参数估计以及育种值评估,并绘制遗传趋势图。结果表明:江苏地区规模化牧场成母牛平均在群寿命为1 640.87 d,生产寿命为917.15 d,平均利用胎次为2.60胎;长寿性状遗传力估计值变化范围为0.07~0.15,属低遗传力性状;7个长寿性状(在群天数、生产寿命、利用胎次和L1-L4)间均具有中等到较高的遗传和表型相关(0.27~0.99),其中在群寿命与生产寿命的相关性趋近于1;通过计算长寿性状的育种值,绘制遗传趋势图,发现近年来长寿性状遗传进展缓慢且整体呈下降趋势。本研究对江苏地区规模化牧场成母牛长寿性状进行了系统的遗传分析,可为制定南方地区奶牛长寿性状育种规划提供参考。

关键词：荷斯坦牛长寿性状遗传力遗传相关育种值

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New strategy for boosting cathodic performance of low temperature solid oxide fuel cells via chlorine doping

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Nano Research 2024年第9期17卷 8086-8094页

作者： ShaoHua Xu Hao Qiu Shanshan Jiang Jingjing Jiang Wei Wang Xiaomin Xu Wei Kong Tanaka Dennis Chivurugwi Arkadii Proskurin Daifen chen Chao Su School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212100China Institute of Analysis and Testing Beijing Academy of Science and TechnologyBeijing 100089China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWA6102Australia Admiral Makarov National University of Shipbuilding Heroiv Ukrainy av.9Mykolaiv54025Ukraine

To enhance the performance and widespread use of solid oxide fuel cells(SOFCs),addressing the low-temperature(<650℃)electrochemical performance and operational stability issues of cathode materials is ***,we propose an innovative approach to enhance oxygen ion mobility and electrochemical performance of perovskite oxide by substituting some oxygen sites with chlorine *** designed SrTa_(0.1)Fe_(0.9)O_(3-δ-x)Clx(x=0.05 and 0.10)exhibits improved performance compared to SrTa_(0.1)Fe_(0.9)O_(3-δ)(STF).SrTa_(0.1)Fe_(0.9)O_(2.95-δ)Cl_(0.05)(STFCl0.05)shows the lowest area-specific resistance(ASR)value on Sm0.2Ce0.8O1.9(SDC)*** 600℃,STFCl0.05 achieves an ASR value of 0.084Ω·cm^(2),and a single cell with STFCl0.05 reaches a higher peak power density(PPD)value(1143 mW·cm^(-2))than that with STF(672 mW·cm^(-2)).Additionally,besides exhibiting excellent oxygen reduction reaction(ORR)activity at lower temperatures,the STFCl0.05 cathode demonstrates good CO_(2)tolerance and operational *** cell operation lasts for 150 h,and single cell operation endures for 720 h without significant performance *** chlorine doping approach effectively enhances ORR activity and stability,making STFCl0.05 a promising cathode material for low-temperature SOFCs.

关键词： low-temperature solid oxide fuel cells(LT-SOFCs) oxygen reduction reaction(ORR) CO_(2)tolerance chlorine doping

Engineering of oxygen vacancy and bismuth cluster assisted ultrathin Bi_(12)O_(17)Cl_(2)nanosheets with efficient and selective photoreduction of CO_(2)to CO

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Carbon Energy 2024年第4期6卷 1-11页

作者： Meili Guan Ni Lu Xuan Zhang Qiuwan Wang Jian Bao Guiye chen Hao Yu Huaming Li Jiexiang Xia Xuezhong Gong College of Chemical and Biological Engineering Shandong University of Science and TechnologyQingdaoShandongChina Institute for Energy Research Jiangsu UniversityZhenjiangJiangsuChina National Center of International Joint Research for Hybrid Materials Technology Institute of Hybrid MaterialsCollege of Materials Science andEngineeringNational Base of International Science and Technology Cooperation on Hybrid MaterialsQingdao UniversityQingdaoShandongChina

The photocatalytic conversion of CO_(2)into solar‐powered fuels is viewed as a forward‐looking strategy to address energy scarcity and global *** work demonstrated the selective photoreduction of CO_(2)to CO using ultrathin Bi_(12)O_(17)Cl_(2)nanosheets decorated with hydrothermally synthesized bismuth clusters and oxygen vacancies(OVs).The characterizations revealed that the coexistences of OVs and Bi clusters generated in situ contributed to the high efficiency of CO_(2)–CO conversion(64.3μmol g^(−1)h^(−1))and perfect *** OVs on the facet(001)of the ultrathin Bi_(12)O_(17)Cl_(2)nanosheets serve as sites for CO_(2)adsorption and activation sites,capturing photoexcited electrons and prolonging light absorption due to defect *** addition,the Bi‐cluster generated in situ offers the ability to trap holes and the surface plasmonic resonance *** study offers great potential for the construction of semiconductor hybrids as multiphotocatalysts,capable of being used for the elimination and conversion of CO_(2)in terms of energy and environment.

关键词： Bi cluster Bi_(12)O_(17)Cl_(2)nanosheet oxygen vacancy photocatalytic CO_(2)reduction