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Effects of maternal feeding of clofibrate on hepatic fatty acid metabolism in suckling piglet

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Journal of Animal Science and Biotechnology 2025年第1期16卷 424-440页

作者： Jinan Zhao Brandon Pike Feng Wang lin Yang Paige Meisner Yanling Huang Jack Odle xi lin Laboratory of Developmental Nutrition Department of Animal ScienceNorth Carolina State UniversityRaleighNC 27695USA Sales Department Zinpro CorporationEden PrairieMN 55344USA Extension Agent NC State UniversityN.C.Cooperative Extension-Northampton County Center9495 NC Highway 305PO Box 636JacksonNC 27845USA Key Laboratory of Animal Science of State Ethnic Affairs Commission Southwest Minzu UniversityChengdu 610041People’s Republic of China

Background Energy deficiency is a leading cause of the high pre-weaning mortality of neonatal piglets in the swine ***,optimal energy metabolism is of crucial importance for improving the survivability of neonatal *** effective utilization of milk fat as primary energy is indispensably *** Pregnant sows(n=27)were randomly assigned into 3 *** treatment received a standard diet(3,265 kcal ME/kg)supplemented with either 0,0.25%or 0.5%clofibrate(w/w)from d 107 of gestation to d 7 of *** effects of maternal clofibrate on their milk fatty acid(FA)and performance of the piglets were *** evaluations were performed via measuring sow productive performance,milk FA composition,and hepatic FA oxida-tion of the piglets at birth and d 1,7,14 and 19 after *** Maternal supplementation of clofibrate had no effect on reproductive performance of the sows at farrowing and weaning(P>0.05).However,the mortality at weaning was reduced for piglets from sows with 0.25%of clofi-brate,and the average weekly(and daily)gain was higher in piglets from sows that received clofibrate than sows without clofibrate in the first week(Pxidation measured at the first day of birth,but the increase was not detected in piglets on d 7,14 or *** was not detected in milk collected from the clofibrate-treated *** percentage of FA oxidation decreased,and the percentage of FA esterification increased with increasing in postnatal *** carni-tine increased FA oxidation regardless of succinate dehydrogenase inhibition,and the increase had no effect on FA *** Maternal supplementation of clofibrate during late gestation and early lactation increases hepatic FA oxidative metabolism at birth and imp

关键词： Clofibrate Hepatic fatty acid oxidation and metabolism Newborn pigs Postnatal age PPARα

Achieving further refinement of grain structure and improvement of mechanical properties in Al-12Si-4Cu-2Ni-1Mg alloy by Al-Ti-C-B master alloy addition and deep cryogenic treatment

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China Foundry 2025年第1期22卷 75-82页

作者： lin-fei xia wen-bo Li Zuo-shan Wei Yu-ying Wu xiang-fa Liu China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationShandong UniversityJinan 250061China Shandong Key Laboratory of Advanced Aluminum Materials and Technology Binzhou Institute of TechnologyBinzhou 256600ShandongChina

Near-eutectic Al-Si alloys are widely used in automotive manufacturing due to their superior wear resistance and high temperature *** of high Si content,the grain refinement of near-eutectic Al-Si alloy has been a problem for many *** this study,the effect of deep cryogenic treatment(DCT)on the microstructure and mechanical properties of Al-12Si-4Cu-2Ni-Mg alloy with addition of Al-Ti-C-B master alloy was fully *** show that the average grain size of the alloy is greatly reduced from 0.92 mm to 0.50 mm,and the eutectic Si and Al7Cu4Ni precipitates are spheroidized and refined in Al-12Si-4Cu-2Ni-Mg after DCT for 24 h and aging *** these changes of microstructures result in a significant increment of about 22.5%in elongation and a slight enhancement of about 6.8%in tensile ***,the refinement of microstructure also significantly improves the fatigue life of the alloy.

关键词： deep cryogenic treatment near-eutectic Al-Si master alloy microstructure mechanical properties

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植物源农药研发及中药材生产中的应用现状

中国中药杂志 2016年第19期41卷 3579-3586页

作者：张鹏李西文董林林陈士林中国中医科学院中药研究所北京100700

中药农残和重金属超标等问题是制约中药材产业健康发展的瓶颈,与传统化学农药相比,以植物源农药为代表的生物农药安全、环保,有利于中药材的无公害生产和质量提高。目前植物源农药在政策利好和市场需求升温的契机下迎来重大发展机遇,尽... 详细信息

中药农残和重金属超标等问题是制约中药材产业健康发展的瓶颈,与传统化学农药相比,以植物源农药为代表的生物农药安全、环保,有利于中药材的无公害生产和质量提高。目前植物源农药在政策利好和市场需求升温的契机下迎来重大发展机遇,尽管基础研究薄弱,因其低毒安全和生态无污染,未来发展空间巨大。该文综述了中药材生产中植物源农药研发的发展现状,并针对现存的问题和挑战提出了策略性建议。植物源农药的研发有望成为解决中药材农残和重金属超标问题的利器,促进中药产业源头的健康发展。

关键词：植物源农药中药材生产农残植物资源

Research progress on the environmental risk assessment and remediation technologies of heavy metal pollution in agricultural soil

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Journal of Environmental Sciences 2025年第3期149卷 1-20页

作者： Xurui Mai Jing Tang Juexuan Tang xinyue Zhu Zhenhao Yang xi Liu xiaojie Zhuang Guang Feng lin Tang College of Environmental Science and Engineering Hunan UniversityChangsha 410082China Key Laboratory of Environmental Biology and Pollution Control(Hunan University) Ministry of EducationChangsha 410082China Power China Zhongnan Engineering Corporation Limited Changsha 410014China

Controlling heavy metal pollution in agricultural soil has been a significant *** heavy metals seriously threaten the surrounding ecological environment and human *** effective assessment and remediation of heavy metals in agricultural soils are *** two aspects support each other,forming a close and complete decisionmaking ***,this review systematically summarizes the distribution characteristics of soil heavy metal pollution,the correlation between soil and crop heavy metal contents,the presence pattern and migration and transformation mode of heavy metals in the soil-crop *** advantages and disadvantages of the risk evaluation tools and models of heavy metal pollution in farmland are further outlined,which provides important guidance for an in-depth understanding of the characteristics of heavymetal pollution in farmland soils and the assessment of the environmental *** remediation strategies involve multiple physical,chemical,biological and even combined technologies,and this paper compares the potential and effect of the above current remediation technologies in heavy metal polluted farmland ***,the main problems and possible research directions of future heavy metal risk assessment and remediation technologies in agricultural soils are *** review provides new ideas for effective assessment and selection of remediation technologies based on the characterization of soil heavy metals.

关键词： Source Migration transformation Risk assessment Remediation Heavy metals Agricultural soils

A special core-shell material(Mxene@Ag@Phytate)to improve EVA composite fire safety,radiation cross-linking effect,and electromagnetic shielding

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Nuclear Science and Techniques 2025年第2期36卷 27-39页

作者： Si-Yi Xu Dan-Yi Li wen-Rui Wang lin lin Ying Sun Ji-Hao Li lin-Fan Li Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

High-performance MXene-based polymer nanocomposites are well-suited for various industrial applications owing to their excellent mechanical,thermal,and other ***,the fabrication of flame-retardant polymer/MXene nanocom-posites remains challenging owing to the limited flame-retardant properties of MXene *** study prepared a novel MXene@Ag@PA hybrid material via radiation modification and complexation *** material was used to further enhance the key properties of ethylene-vinyl acetate(EVA),such as its mechanical properties,thermal conductivity,flame retardancy,and electromagnetic *** addition of two parts of this hybrid material increased the thermal conduc-tivity of EVA by 44.2%and reduced its peak exothermic rate during combustion by 30.1%compared with pure *** material also significantly reduced smoke production and increased the residue *** the X-band,the electromagnetic shielding effectiveness of the EVA composites reached 20 ***,the MXene@Ag@PA hybrid material could be used to further enhance the mechanical properties of EVA composites under electron-beam ***,this study contributes to the development of MXene-based EVA advanced materials that are fire-safe,have high strength,and exhibit good electromagnetic shielding performance for various applications.

关键词： MXene@Ag@PA Ethylene-vinyl acetate(EVA) Flame retardancy Electromagnetic shielding performance

Interfacial behaviors between ZG13Cr9Mo1VNbN stainless steel and chromite sand

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Journal of Iron and Steel Research International 2025年第1期32卷 129-143页

作者： Shi-sen Li xi-min Zang Ji-lin Chen Jie Yang Yu-an Jing Zhi-ying Wang ling-zhong Kong School of Materials and Metallurgy University of Science and Technology LiaoningAnshan114051LiaoningChina School of Material Science and Engineering Shenyang University of TechnologyShenyang110870LiaoningChina Central Iron and Steel Research Institute Co. Ltd.Beijing100081China xingtai Iron and Steel Co. Ltd.Xingtai054027HebeiChina

To elucidate the formation mechanisms of burn-on sand and metal penetration during sand casting,some laboratory experiments were carried out at different temperatures(1813,1833,1853,and 1873 K)and holding time(20,40,60,and 90 min)to simulate the interaction between ZG13Cr9Mo1VNbN stainless steel and chromite *** results demonstrate that the defects primarily consist of a mixture of the liquid phase,chromite,and *** main components of the liquid phase are SiO_(2),MnO,MgO,Cr_(2)O_(3),FeO,and Al_(2)O_(3),and the formation of Cr_(2)O_(3)through interfacial redox reactions has been *** presence of a liquid phase plays a pivotal role in influencing burn-on sand and metal *** reactions are prioritized,with burn-on sand maintaining a predominant *** the liquid phase quantity within the sand escalates,there is a corresponding incremental rise in the incidence of metal *** a minimal presence of the silicon element in steel can impact the liquid phase’s ***,the decomposition or dissolution of chromite sand is a significant factor in the development of burn-on sand and metal ***,a thorough investigation into the conditions and contributing factors of this phenomenon is essential for its effective management and mitigation.

关键词： Heat-resistant steel Chromite sand Interfacial reaction Burn-on sand Metal penetration Temperature Holding time

混播比例和刈割期对混播草地产草量及种间竞争的影响

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中国草地学报 2009年第4期31卷 36-40页

作者：锡文林张仁平新疆维吾尔自治区草原总站新疆乌鲁木齐830049

对新疆石河子绿洲区紫花苜蓿与无芒雀麦混播草地的群落生物量、茎叶比、种间竞争力进行了动态研究。结果表明,以紫花苜蓿7.5kg/hm2、无芒雀麦15kg/hm2的比例混播并在紫花苜蓿初花期刈割为最佳组合,干物质产量为23.4t/hm2。两种牧草种间... 详细信息

对新疆石河子绿洲区紫花苜蓿与无芒雀麦混播草地的群落生物量、茎叶比、种间竞争力进行了动态研究。结果表明,以紫花苜蓿7.5kg/hm2、无芒雀麦15kg/hm2的比例混播并在紫花苜蓿初花期刈割为最佳组合,干物质产量为23.4t/hm2。两种牧草种间竞争力和竞争率分析表明,不同的混播比例和刈割期对两种牧草的竞争力有一定影响,紫花苜蓿的竞争力强于无芒雀麦,在竞争中占有优势。

关键词：紫花苜蓿无芒雀麦生物量茎叶比竞争力

Super-high bed sintering for iron ores:variation and optimization of bed resistance

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Journal of Iron and Steel Research International 2025年第1期32卷 40-51页

作者： Liang-ping Xu lin xiong Hui-bo Liu xi-duan Yang Ai-xiang Mao Pei-dun Chen Guang-hui Li School of Minerals Processing and Bioengineering Central South UniversityChangsha410083HunanChina Central Research Institute Baosteel Group Co.Ltd.Shanghai201900China Manufacturing Management Department Guangdong Zhongnan Iron and Steel Co.Ltd.Shaoguan512123GuangdongChina Technology and Development Center Shandong Taishan Iron and Steel Group Co.Ltd.Jinan271100ShandongChina

As the bed depth increases,sintering yield increases,but the productivity *** reveal the reasons for the decrease in productivity and explore targeted solutions,the bed resistance of mixtures,wet zone,and combustion zone was analyzed in the *** results showed that the decreased porosity of mixture resulted in the increased bed resistance by 160.56%when the bed depth increased from 600 to 1000 *** improving porosity of 1%by adding loosening bars with optimized size and distribution,the bed resistance decreased,and the productivity increased by 5%.The increase in bed depth increased the thickness of the wet zone from 120 to 680 mm and the resistance from 1.56 to 8.83 *** using a three-stage intensive mixer and pre-adding water for granulation,the moisture of mixture was reduced by 0.6%,and the sintering productivity increased by 4%.Besides,the high bed resistance is mainly caused by the increase in the thickness of the combustion zone from 31.9 to 132.7 mm,and the bed resistance increased from 0.70 to 5.62 *** bed resistance of the combustion zone at 900 mm was increased by 90.51%compared to 700 *** optimization of the distribution of coke breeze,the thickness of combustion zone at the lower layer decreased from 132.7 to 106.84 mm and permeability improved significantly.

关键词： Super-high bed sintering Bed resistance Permeability Productivity Wet zone Combustion zone

Corrosion resistance and antibacterial properties of Ti−3Cu alloy prepared by selective laser melting

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Transactions of Nonferrous Metals Society of China 2025年第1期35卷 143-156页

作者： Meng-zhen ZHU Jing-lei MIAO xiong-wen ZHOU Er-lin ZHANG Zhi-lin LIU Hai-lin YANG State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China The Third xiangya Hospital Central South UniversityChangsha 410013China Department of Prosthodontics Centre of StomatologyXiangya HospitalCentral South UniversityChangsha 410008China Key Laboratory for Anisotropy and Texture of Materials Ministry of EducationSchool of Materials Science and EngineeringNortheastern UniversityShenyang 110819China Light Alloy Research Institute College of Mechanical and Electrical EngineeringCentral South UniversityChangsha 410083China

The corrosion resistance and antibacterial properties of Ti−3Cu alloy prepared by selective laser melting were evaluated using electrochemical experiments and a variety of antibacterial *** is found that the charge transfer resistance of Ti−3Cu alloy was 4.89×10^(5)Ω∙cm^(2),which was doubled the data obtained by CP-Ti *** antibacterial rates of Ti−3Cu alloy against *** and *** were 45.0%and 54.5%.And the antibacterial rates increased with the prolongation of cultivation time,reaching up to 62.8%and 68.6%,*** in-situ nano Ti_(2)Cu precipitates were homogeneously distributed in the matrix of the Ti−3Cu alloy,which was the key reason of increasing the corrosion ***,the microscale electric fields between theα-Ti matrix and the Ti_(2)Cu was responsible for the enhancement of the antibacterial properties.

关键词： selective laser melting Ti−3Cu alloy microstructure corrosion resistance antibacterial properties