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Enhanced electrochemical performance of graphitic carbon-wrapped spherical FeOF nanoparticles using maleopimaric acid as a cathode material for sodium-ion batteries

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Journal of Materials Science & Technology 2021年第26期85卷 184-193页

作者： Achmad Yanuar Maulana Jungwook song Da Won Leeg chae Eun Leeg Jongsik Kimg Department of Chemistry Dong-A UniversityBusan 49315South Korea Department of Chemical Engineering(BK21 FOUR Graduate Program) Dong-A UniversityBusan 49315South Korea

Sodium-ion batteries(SIBs)are considered one of the most promising energy storage systems for replacing lithium-ion batteries because of the high abundance and low cost of *** oxyfluoride(FeOF)is a promising conversion-based cathode material for SIBs because of its high theoretical capacity of about855 mA h g^(-1),low-cost chemical compositions,and its lower sensitivity to the size of charged carrier ***,the poor electrical conductivity and ionic diffusion of FeOF result in a low rate capability and *** this work,FeOF nanoparticles wrapped by graphitic carbon layers were synthesized using abietic or maleopimaric acid as both the carbon source and organic *** addition,the morphology of the FeOF particles was gradually controlled from rod to spherical shapes,simply depending on the rosin *** FeOF nanoparticles prepared with maleopimaric acid showed a large reversible discharge capacity of 356.7 mA h g^(-1)with a fading rate of 0.21%per cycle after 100 cycles at a current density of 100 mA g^(-1)and an excellent rate capability.

关键词： Na-ion batteries Cathode Iron oxyfluoride Graphitized carbon Maleopimaric acid

基于MEIC数据的长三角地区CO_(2)排放时空演变及影响因素分析

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环境科学研究 2024年第8期37卷 1666-1679页

作者：赵强李迎迎刘嵩易明建方潜生安徽建筑大学环境与能源工程学院安徽合肥230601 智能建筑与建筑节能安徽省重点实验室安徽合肥230601 中建国际工程有限公司安徽合肥230000 安徽省建设领域碳达峰碳中和战略研究院安徽合肥230601

在国家推进长三角一体化高质量发展的背景下,对该地区CO_(2)排放的时空特征及其影响因素进行系统研究,对于制定碳减排行动方案具有重要参考价值。基于多尺度排放清单模型(MEIC)数据,分别从工业、电力、交通运输、民用四个部门分析2005-2... 详细信息

在国家推进长三角一体化高质量发展的背景下,对该地区CO_(2)排放的时空特征及其影响因素进行系统研究,对于制定碳减排行动方案具有重要参考价值。基于多尺度排放清单模型(MEIC)数据,分别从工业、电力、交通运输、民用四个部门分析2005-2020年长三角地区CO_(2)排放的时空分布,采用灰色关联度与LMDI相结合的方法,分析研究区CO_(2)排放的影响因素。结果表明:长三角地区CO_(2)排放量呈上升趋势,CO_(2)排放的平均值由3151 g/(m^(2)∙a)增至5374 g/(m^(2)∙a),增加了70%;但CO_(2)排放的最大值却呈下降趋势,由84726 g/(m^(2)∙a)减至75169 g/(m^(2)∙a),下降了11%,其中工业部门CO_(2)排放量最高。CO_(2)排放的空间分布差异明显,总体呈现出“西低东高”的空间特征。经济发展是长三角地区CO_(2)排放增长的主导因素,其平均贡献值为14108.8×10^(4)t,能源强度是抑制CO_(2)排放增长的关键因素,其平均贡献值为-9586.4×10^(4)t。研究显示,长三角地区减排重点在于能源结构优化和能源效率提升,同时发挥上海、苏州、杭州等地区在长三角地区发展中的带动作用,构建跨区域的协同减排机制,推动长三角产业链的绿色转型与低碳化发展。

关键词： MEIC 长三角地区 CO_(2)排放灰色关联度分析 LMDI 时空演变

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新工科背景下文件检验学课程教学改革构想

科教导刊 2024年第16期 107-109页

作者：宋朝阳安徽公安学院安徽合肥238076

文件检验学是一门理论和实践并重的课程,当前的文件检验学课程存在课程教学创新性不足、新工具应用较少、实践教学不够充分、学科交叉融合不够深入等一系列问题,难以满足新工科背景下对于实用型和创新型人才培养的需求。针对这些问题,... 详细信息

文件检验学是一门理论和实践并重的课程,当前的文件检验学课程存在课程教学创新性不足、新工具应用较少、实践教学不够充分、学科交叉融合不够深入等一系列问题,难以满足新工科背景下对于实用型和创新型人才培养的需求。针对这些问题,文章提出一系列课程教学改革方案,旨在完善课程体系,以满足新工科背景下人才培养的需求。

关键词：文件检验学新工科教学改革

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公路隧道喷射型ECC物理力学性能及其喷层稳定性

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工程科学与技术 2024年第3期56卷 109-121页

作者：胡时李晓芳蔡海兵韩辰悦宋海清安徽理工大学土木建筑学院安徽淮南232001 清华大学山西清洁能源研究院山西太原030032 同济大学土木工程学院上海200092 安徽文达信息工程学院城市建设学院安徽合肥231201

传统纤维增强水泥基复合材料(ECC)存在成本高、收缩大和应用场景局限等问题,且关于开挖扰动下公路隧道喷射型ECC层稳定性的研究尚不完善,此外缺乏对其工程应用后的监测评估。基于此,本文研究了公路隧道喷射型ECC的物理力学性能,分析了... 详细信息

传统纤维增强水泥基复合材料(ECC)存在成本高、收缩大和应用场景局限等问题,且关于开挖扰动下公路隧道喷射型ECC层稳定性的研究尚不完善,此外缺乏对其工程应用后的监测评估。基于此,本文研究了公路隧道喷射型ECC的物理力学性能,分析了开挖扰动下围岩及喷射型ECC层的稳定性,并通过现场监测分析了其应用效果。结果表明:将脱硫石膏、混杂纤维、机制砂、膨胀剂和减缩剂引入ECC中,所研发的喷射型ECC物理力学性能满足公路隧道喷射混凝土的要求。基于数值模拟,当支护12 m后,喷射型ECC层的拉伸和压缩最大主应力较C25喷射混凝土(C25SC)层分别提高了36.8%、28.4%,并且其内侧拱顶的最大竖向位移较C25SC可降低3.15%,仅为1.23 mm。基于现场实测,在近似相同的围岩地质条件下,使用喷射型ECC较C25SC,能够降低10.26%的竖直沉降变形,此外其喷层表面未发现开裂、线状渗水等情况。因此,喷射型ECC在公路隧道支护领域具有广阔的应用前景。

关键词：喷射型ECC 公路隧道物理力学性能数值模拟稳定性

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超声振动下FCC金属统一本构模型及其在无氧高导热铜的应用

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Transactions of Nonferrous Metals Society of China 2024年第7期34卷 2245-2259页

作者：宋鹏飞曹秒艳胡晗陈吉业付敏燕山大学机械工程学院秦皇岛066004 燕山大学河北省轻质结构装备设计与制备工艺技术创新中心秦皇岛066004 School of Civil Engineering and Surveying University of PortsmouthPortsmouth PO13AHUK

建立统一本构模型,预测面心立方金属(FCC)超声振动(UV)辅助成形塑性流动行为。该模型基于超声能场下的位错动力学并结合应力叠加机制描述UV软化行为。考虑位错密度、晶粒尺寸和超声能场的相互作用,以位错密度和晶粒尺寸作为内部状态变... 详细信息

建立统一本构模型,预测面心立方金属(FCC)超声振动(UV)辅助成形塑性流动行为。该模型基于超声能场下的位错动力学并结合应力叠加机制描述UV软化行为。考虑位错密度、晶粒尺寸和超声能场的相互作用,以位错密度和晶粒尺寸作为内部状态变量建立模型,预测UV辅助成形的残余行为。开展无氧高导热(OFHC)铜UV辅助压缩试验来验证该模型的预测能力。结果表明,OFHC铜在UV下表现出明显的软化行为和残留软化行为,模型预测与实验结果吻合较好,有效反映铜的软化效应和残余效应。

关键词：本构建模超声振动声软化行为压缩铜

SEDIMENT TRANSPORT CAPACITY-AN IMPROVED BAGNOLD FORMULA

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International Journal of Sediment Research 2007年第1期22卷 27-38页

作者： Sung-Cheol KOH In-Soo KIM Young-chae song

This paper re-examines Bagnold’s theorem of sediment transport. Different from the stream power defined by Bagnold, i.e., τoV, this study shows that the total load of sediment-laden flow, gt, is related to near bed energy dissipation rate, i.e., τou*’. An attempt is made to explain the empirical relation. The ratio (=k) of measured total load, gt, to the product of near bed velocity, u*’, and energy dissipation rate, τou*’, is analyzed. It is found that k is independent of the Rouse number, Z, if Z is greater than 2.6, but the coefficient k decreases with the increase of Z when Z < 2.6. An empirical relation between k and Z is developed. A systematic and thorough analysis of 1,458 sets of data collected from 16 rivers and canals confirms that the proposed formula can be used to compute the total load with accuracy.

关键词： Sediment transport River flow Total sediment discharge Stream power

Stimbiotic supplementation modulated intestinal inflammatory response and improved broilers performance in an experimentally-induced necrotic enteritis infection model

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Journal of Animal Science and Biotechnology 2023年第1期14卷 322-338页

作者： Ji Hwan Lee Byongkon Lee Xavière Rousseau Gilson A.Gomes Han Jin Oh Yong Ju Kim Se Yeon Chang Jae Woo An Young Bin Go Dong Cheol song Hyun ah Cho Jin Ho Cho Department of Animal Science Chungbuk National UniversityCheongju 28644South Korea. Cherrybro Co. Ltd.Jincheon‑Gun 27820South Korea. AB Vista MarlboroughWiltshireUK.

Background:Two experiments were conducted to establish an optimal NE challenge model and evaluate the efficacy of stimbiotic(STB)supplementation in necrotic enteritis(NE)challenged *** Exp.1,a total of 120 Arbor Acres(AA)broilers(45.0±0.21 g)were randomly assigned to 6 treatments in a 3×2 factorial *** treatments included non-challenge(0),×10 the recommended dose(×10)or×20 the recommended dose(×20)by the *** perfringens(CP)treatments were non-challenge(No)or 3 mL of 2.2×10^(7)CFU CP challenge(Yes).In Exp.2,a total of 72 AA broilers(40.17±0.27 g)were randomly assigned to 6 treatments in a 3×2 factorial *** treatments included non-additive(CON),100 mg/kg STB(STB)and 100 mg/kg STB on top of a typical commercial blend including an essential oil,probiotics,and enzyme(CB).Challenge treatments included non-NE challenge(No)and NE challenge(Yes)as established in ***:In Exp.1,CP and vaccine challenge decreased(P<0.05)body weight(BW),body weight gain(BWG)and feed intake(FI),and increased(P<0.05)the number of broilers with diarrhea and intestinal *** oral administration of×20 recommended dose of vaccines coupled with 3 mL of 2.2×10^(7)CFU CP resulted in(P<0.01)a significantly increased incidence of wet litter and intestinal ***,this treatment was chosen as the challenge model for the successful inducement of NE in *** Exp.2,the NE challenge negatively affected(P<0.01)growth performance,ileal morphology,immunoglobulin contents in blood,caecal microbiota in the caecum,footpad dermatitis,intestinal lesion scores,tumour necrosis factor(TNF-α)and endotoxin in the serum compared with the non-NE challenged *** supplementation of STB and CB in diets enhanced(P<0.05)growth performance,intestinal microbiota,and blood profiles by stimulating ileal morphology(VH and VH:CD)and propionate production in the cecum,and there were no differences in measured variables between STB and CB supplemented

关键词： Broiler chicken Clostridium perfringens Necrotic enteritis Xylanse Xylooligosaccharide

Anethole improves the developmental competence of porcine embryos by reducing oxidative stress via the sonic hedgehog signaling pathway

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Journal of Animal Science and Biotechnology 2023年第4期14卷 1395-1407页

作者： Ye Eun Joo Pil-Soo Jeong Sanghoon Lee Se-Been Jeon Min-ah Gwon Min Ju Kim Hyo-Gu Kang Bong-Seok song Sun-Uk Kim Seong-Keun Cho Bo-Woong Sim Futuristic Animal Resource and Research Center Korea Research Institute of Bioscience and BiotechnologyCheongjuSouth Korea Department of Animal Science College of Natural Resources and Life SciencePusan National UniversityMiryangSouth Korea Laboratory of Theriogenology College of Veterinary MedicineChungnam National UniversityDaejeonSouth Korea Department of Biotechnology College of EngineeringDaegu UniversityGyeongsanSouth Korea Department of Animal Science and Biotechnology College of Agriculture and Life ScienceChungnam National UniversityDaejeonSouth Korea Department of Functional Genomics University of Science and TechnologyDaejeonSouth Korea Department of Animal Science College of Natural Resources and Life ScienceLife and Industry Convergence Research InstitutePusan National UniversityMiryangSouth Korea

Background Anethole(AN)is an organic antioxidant compound with a benzene ring and is expected to have a positive impact on early embryogenesis in ***,no study has examined the effect of AN on porcine embryonic ***,we investigated the effect of AN on the development of porcine embryos and the underlying *** We cultured porcine in vitro-fertilized embryos in medium with AN(0,0.3,0.5,and 1 mg/mL)for 6 *** at 0.5 mg/mL significantly increased the blastocyst formation rate,trophectoderm cell number,and cellular survival rate compared to the ***-supplemented embryos exhibited significantly lower reactive oxygen species levels and higher glutathione levels than the ***,AN significantly improved the quantity of mitochondria and mitochondrial membrane potential,and increased the lipid droplet,fatty acid,and ATP ***,the levels of proteins and genes related to the sonic hedgehog(SHH)signaling pathway were significantly increased by *** These results revealed that AN improved the developmental competence of porcine preimplantation embryos by activating SHH signaling against oxidative stress and could be used for large-scale production of high-quality porcine embryos.

关键词： Anethole Lipid metabolism Mitochondrial function Porcine embryo development Sonic hedgehog signaling pathway

依托生物标本制作大赛促进植物学课程教学建设

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安徽农学通报 2024年第9期30卷 117-121页

作者：刘华彬王松安徽科技学院生命与健康科学学院安徽凤阳233100

在高等教育教学改革中,培养具有创新精神和实践能力的高素质创新型人才,是高校人才培养工作的重要任务之一。针对当前高等教育中植物学课程教学存在的部分待改进之处,本文结合大学生生物标本制作大赛,分别从以赛促学、以赛促练、以赛促... 详细信息

在高等教育教学改革中,培养具有创新精神和实践能力的高素质创新型人才,是高校人才培养工作的重要任务之一。针对当前高等教育中植物学课程教学存在的部分待改进之处,本文结合大学生生物标本制作大赛,分别从以赛促学、以赛促练、以赛促教、以赛促改和以赛促创5个方面入手,分析大赛对植物学教学改革的促进作用,并提出构建“课程+实验+实习+项目+竞赛”五位一体的人才培养模式。目的在于为植物学教学改革和创新型人才培养提供参考。

关键词：生物标本制作大赛植物学农学人才培养

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