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hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 406-411页

作者： Jun-fang Deng Chuan-Hui Peng Yu Zhang Xiao-Feng Xu Rong-Liang Tong Zheng-Long Zhai Di-Yu Chen Cheng Zhang Li-Ming Wu Jian Wu Division of hepatobiliary Pancreatic Surgery the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China

Laparoscopic anatomical liver resection has been increasingly reported worldwide,but how to demarcate the resection planes is technically challenging[1].Positive staining technique with intraoperative indocyanine green(ICG)-fluorescence imaging has been introduced as an effective tool for real-time intraoperative guidance[2].Liver anatomy is ***,liver is composed of 9 segments,each is composed of two to three subsegments,and each subsegment contains several hepatic cone units.A hepatic cone unit is dominated by a tertiary or quaternary hepatic pedicles[3].

关键词： hepatic resection anatomy

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烧结提高非主流矿与经济矿比例实践

烧结球团 2024年第4期49卷 26-32,43页

作者：方亮王平孙社生谢蒙龙红明马鞍山钢铁股份有限公司安徽马鞍山243000 安徽工业大学冶金工程学院安徽马鞍山243032

当前进口主流矿品质明显下降,主要成分Al_(2)O_(3)呈上升趋势,烧结生产需要采购大量的中硅低铝资源以降低高炉炉渣Al_(2)O_(3)含量。降低主流矿比例,寻找非主流矿和经济矿,对于炼铁工序降本增效至关重要。本文主要阐述了马钢公司在强化... 详细信息

当前进口主流矿品质明显下降,主要成分Al_(2)O_(3)呈上升趋势,烧结生产需要采购大量的中硅低铝资源以降低高炉炉渣Al_(2)O_(3)含量。降低主流矿比例,寻找非主流矿和经济矿,对于炼铁工序降本增效至关重要。本文主要阐述了马钢公司在强化铁矿石市场寻源工作基础上,采用铁前一体化优化配矿技术,精心设置烧结、球团和高炉工序约束条件,在保证烧结矿质量稳定和高炉生产低耗高效基础上,对中长期烧结、球团配矿结构做出的重大变动。该变动将马钢南、北区非主流矿和经济矿质量分数分别从16.0%、9.0%提高至30.0%、24.0%,使铁水成本有了明显的下降。

关键词：烧结球团高炉非主流矿优化配矿

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“双创”背景下经济管理类任选课教学改革研究——以“财务管理”课程为例

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教育教学论坛 2024年第1期 62-65页

作者：何任方雨婷大连海事大学航运经济与管理学院辽宁大连116026

在目前高校创新创业课程体系仍不够健全完善的情况下,经管类任选课是非经管类专业学生学习创业所需经济管理知识的重要途径,但现有经管类任选课普遍存在无法满足学生创新创业实践需求的局限性。以“财务管理”课程为例,提出了通过改革... 详细信息

在目前高校创新创业课程体系仍不够健全完善的情况下,经管类任选课是非经管类专业学生学习创业所需经济管理知识的重要途径,但现有经管类任选课普遍存在无法满足学生创新创业实践需求的局限性。以“财务管理”课程为例,提出了通过改革现有经管类任选课以丰富完善高校创新创业课程体系的思路,分析了“双创”背景下经管类任选课教学需向创新创业类任选课改革的必要性,并分析了当前“财务管理”课程教学中普遍存在的问题,提出了“财务管理”课程教学改革的策略,以期为高校健全完善创新创业课程体系和提高学生创新创业能力的教学改革探索提供参考。

关键词：创新创业任选课财务管理教学改革

The microbial community,nutrient supply and crop yields differ along a potassium fertilizer gradient under wheat-maize double-cropping systems

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Journal of Integrative Agriculture 2024年第10期23卷 3592-3609页

作者： Zeli Li Fuli fang Liang Wu Feng Gao Mingyang Li Benhang Li Kaidi Wu Xiaomin Hu Shuo Wang Zhanbo Wei Qi Chen Min Zhang Zhiguang Liu Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection College of Resources andEnvironmentLinyi UniversityLinyi 276000China National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources College of Resources and theEnvironmentShandong Agricultural UniversityTai’an 271018China Key Laboratory of Crop Specific Fertilizer Ministry of Agriculture and Rural Affairs/Xinyangfeng Agricultural Technology Co.Ltd.Jingmen 448001China Institute of Applied Ecology Chinese Academy of SciencesShenyang 110000China

Soil microorganisms play critical roles in ecosystem ***,the relative impact of the potassium(K)fertilizer gradient on the microbial community in wheat-maize double-cropping systems remains *** this long-term field experiment(2008-2019),we researched bacterial and fungal diversity,composition,and community assemblage in the soil along a K fertilizer gradient in the wheat season(K0,no K fertilizer;K1,45 kg ha^(-1) K_(2)O;K_(2),90 kg ha^(-1)K_(2)O;K3,135 kg ha^(-1)K_(2)O)and in the maize season(K0,no K fertilizer;K_(1),150 kg ha^(-1) K_(2)O;K_(2),300 kg ha^(-1)K_(2)O;K_(3),450 kg ha^(-1)K_(2)O)using bacterial 16S rRNA and fungal internally transcribed spacer(ITS)*** observed that environmental variables,such as mean annual soil temperature(MAT)and precipitation,available K,ammonium,nitrate,and organic matter,impacted the soil bacterial and fungal communities,and their impacts varied with fertilizer treatments and crop ***,the relative abundance of bacteria involved in soil nutrient transformation(phylum Actinobacteria and class Alphaproteobacteria)in the wheat season was significantly increased compared to the maize season,and the optimal K fertilizer dosage(K2 treatment)boosted the relative bacterial abundance of soil nutrient transformation(genus Lactobacillus)and soil denitrification(phylum Proteobacteria)bacteria in the wheat *** abundance of the soil bacterial community promoting root growth and nutrient absorption(genus herbaspirillum)in the maize season was improved compared to the wheat season,and the K2 treatment enhanced the bacterial abundance of soil nutrient transformation(genus MND1)and soil nitrogen cycling(genus Nitrospira)genera in the maize *** results indicated that the bacterial and fungal communities in the double-cropping system exhibited variable sensitivities and assembly mechanisms along a K fertilizer gradient,and microhabitats explained the largest amount of the variation in crop yields,a

关键词： potassium fertilizer gradient microbial community wheat-maize double cropping climate change yield

Continuous Forcing Spectra of Even Polygonal Chains

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Acta Mathematicae Applicatae Sinica 2021年第2期37卷 337-347页

作者： he-ping ZHANG Xiao-yan JIANG School of Mathematics and Statistics Lanzhou UniversityLanzhou 730000China School of Mathematics and Statistics Huizhou UniversityHuizhou 516007China

Let G be a graph that admits a perfect matching M.A forcing set S for a perfect matching M is a subset of M such that it is contained in no other perfect matchings of *** cardinality of a forcing set of M with the smallest size is called the forcing number of M,denoted by f(G,M).The forcing spectrum of G is defined as:Spec(G)={f(G,M)|M is a perfect matching of G}.In this paper,by applying the Ztransformation graph(resonance graph)we show that for any polyomino with perfect matchings and any even polygonal chain,their forcing spectra are integral *** we obtain some sharp bounds on maximum and minimum forcing numbers of hexagonal chains with given number of *** spectra of two extremal chains are determined.

关键词： perfect matching forcing number forcing spectrum polyomino even polygonal chain Z-transformation graph

An investigation of weed seed banks reveals similar potential weed community diversity among three different farmland types in Anhui Province, China

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Journal of Integrative Agriculture 2019年第4期18卷 927-937页

作者： he Yun-he GAO ping-lei QIANG Sheng Weed Research Laboratory Nanjing Agricultural University School of Landscape Architecture Zhejiang Agricultural & Forestry University

Crop type is one of main factors influencing weed community structure. However, the identity of weed communities associated with the cultivation of different crops in farmlands remains largely unclear. A field survey of weed seed banks was conducted in 2 280 fields at 228 sites of 62 locations representing three different types of farmland(95 paddy, 73 summer-ripe, and 60 autumn-ripe farmlands) along the bank of the Yangtze River in Anhui Province, China. A total of 43 families and 174 species of weeds were found in these weed seed banks. A comparison of the composition of weed groups in the seed banks showed that the species number and density percentage of grass, sedge and broadleaf weed groups were similar among the different types of farmland. The seed banks of all three farmland types shared 71 common weed species, accounting for 40.80% of the total number of species. These common weeds, which were both associated and not associated with crops, accounted for 91.71% of the total dominance degree among all farmland types. The crop-associated weed species were distributed in all soil layers of each farmland type. The Shannon-Wiener index H′(description of species diversity which is more sensitive to dense species) and Pielou's evenness index J(description of species evenness) in summer-ripe farmland were similar to those in autumn-ripe farmland but differed from those in paddy farmland. However, the Simpson's index D(description of species diversity which is more sensitive to sparse species) was similar among all three farmland types. The results of similarity comparison indicated that although the aboveground weed community differed among the different cropping patterns, the weed species composition in the soil seed bank was still similar. Consequently, our results demonstrate that after the implementation of long-term monoculture patterns, weed species compositions in the soil seed bank in different farmlands become homogenized regardless of the crop type.

关键词： species compositi on domi nance degree comm unity similarity comm unity variati on Anhui Province

Advancing AI protein structure prediction and design: From amino acid “bones” to new era of all-atom “flesh”

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Green Carbon 2024年第2期2卷 209-210页

作者： Senbiao fang Ren Wei Yinglu Cui Lin Su Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101China Shandong Energy Institute Qingdao 266101China Qingdao New Energy Shandong Laboratory Qingdao 266101China Junior Research Group Plastic Biodegradation Institute of BiochemistryUniversity of GreifswaldFelix-Hausdorff-Str.8Greifswald 17489Germany AIMCenter Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Yusuf Hamied Department of Chemistry University of CambridgeCambridge CB21EWUK

With the rapid advancement of Artificial Intelligence(AI)technology,cutting-edge protein structure prediction methods have emerged,exemplified by AlphaFold2 and RoseTTAFold[1].These methods have revolutionized our understanding and utilization of protein structures in biological *** their primary focus lies in predicting the 3D structures of separate protein molecules,the potential of native proteins to perform essential functions through the formation of various"biomolecular assemblies"is *** assemblies involve interactions with other biomolecules including nucleic acids,polysaccharides,metals,small ligands,*** complex bonding mechanisms—ranging from covalent and noncovalent bonding to metal chelation,etc.—between different molecular units play critical roles in maintaining biological activities of these ***,effectively predicting binding interactions between proteins and other(bio)molecules within one biomolecular assembly remains an outstanding ***,one groundbreaking work published in Science by Baker et *** two upgraded deep learning tools:RoseTTAFold All Atom(RFAA)and RFdiffusion All-Atom(RFdiffusionAA)[2],which significantly broaden the in silico construction scope for biomolecule assemblies,enabling researchers to explore complex interactions beyond individual protein structures(Fig.1).

关键词： bonding diffusion breaking

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船舶动态驱动的碳排放时空分布规律

中国环境科学 2024年第3期44卷 1769-1776页

作者：余红楚方庆龙方志祥刘敬贤武汉理工大学航运学院湖北武汉430063 武汉大学测绘遥感信息工程国家重点实验室湖北武汉430079 武汉理工大学三亚科教创新园海南三亚572025

本文基于2018年全球集装箱船的AIS(Automatic Identification System)轨迹数据,采用自下而上的方法,计算2018年全球集装箱船的CO_(2)排放量.进一步,采用地理信息科学基础理论与技术,通过船舶排放量与地图的联动分析,挖掘集装箱船CO_(2)... 详细信息

本文基于2018年全球集装箱船的AIS(Automatic Identification System)轨迹数据,采用自下而上的方法,计算2018年全球集装箱船的CO_(2)排放量.进一步,采用地理信息科学基础理论与技术,通过船舶排放量与地图的联动分析,挖掘集装箱船CO_(2)排放的时空分布规律,并分析主要远洋运输航线的排放特征.结果表明,2018年全球集装箱船的CO_(2)年排放量达到1.2355亿t,1月份的排放最高,而11月份排放量全年最低,在时间上呈现明显的分异特性.集装箱船月度排放的空间分布总体较为相似,排放高峰区域主要分布在靠近海岸线和主要远洋航路上,远东-欧洲航线的排放量最高.

关键词：集装箱船 CO_(2)排放 AIS轨迹时空分布

冲击作用下CFRP光圆筋与UHPC粘结性能的试验研究

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复合材料学报 2024年第2期41卷 858-870页

作者：蒋正文刘朋杰方志方亚威王志伟湖南大学土木工程学院长沙410082 湖南大学风工程与桥梁工程湖南省重点实验室长沙410082 中复碳芯电缆科技有限公司连云港222069

为明确冲击荷载作用下,碳纤维增强复合材料(Carbon fiber-reinforced polymer,CFRP)筋与超高性能混凝土(Ultra-high performance concrete,UHPC)粘结界面间化学粘结力和摩擦力的应变率效应,以锚固长度和荷载类型为参数,对8组共计24个采... 详细信息

为明确冲击荷载作用下,碳纤维增强复合材料(Carbon fiber-reinforced polymer,CFRP)筋与超高性能混凝土(Ultra-high performance concrete,UHPC)粘结界面间化学粘结力和摩擦力的应变率效应,以锚固长度和荷载类型为参数,对8组共计24个采用UHPC作为粘结介质锚固的CFRP光圆筋试件(锚固长度分别为20d~35d,d为CFRP筋材直径),分别进行了静力拉拔和筋材应变速率约为4.0 s^(-1)的纵向冲击试验。结果表明:静力和纵向冲击试件均发生了光圆筋拔出的滑移破坏,相较于冲击试件,静力加载后CFRP光圆筋的表面损伤更明显。冲击荷载作用下,CFRP光圆筋与UHPC间界面的化学粘结强度和峰值粘结强度均呈现正的应变率效应,分别较相应的静力强度提高了约53%和17%;而峰值后界面的残余粘结强度即滑动摩擦阻力则表现为负的应变率效应,较相应的静力值降低约38%。基于试验结果,建立了冲击作用下CFRP光圆筋与UHPC间界面动态粘结强度的预测公式。

关键词：碳纤维增强树脂复合材料(CFRP) 超高性能混凝土(UHPC) 冲击荷载粘结强度锚固长度

Omental fibroma combined with right indirect inguinal hernia masquerades as a scrotal tumor: A case report

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World Journal of Clinical Cases 2024年第5期12卷 988-994页

作者： ping Zhou Chan-Hui Jin Ying Shi Guo-Qing Ma Wen-Hao Wu Yu Wang Kun Cai Wu-Feng Fan Tian-Bao Wang Department of Gastrointestinal Surgery South China Hospital of Shenzhen UniversityShenzhen 518000Guangdong ProvinceChina

BACKGROUND The most common causes of scrotal enlargement in patients include primary tumor of the scrotum,inflammation,hydrocele of the tunica vaginalis,and indirect inguinal hernia;scrotal enlargement caused by external tumors of the scrotum is *** patient had both a greater omentum tumor and an inguinal hernia,and the tumor protruded into the scrotum through the hernia sac,which is even ***,omental tumors are mostly metastatic,and primary omental fibroma is *** SUMMARY here,we report a rare case of a 25-year-old young man with scrotal enlargement and pain for 3 *** examination and multidisciplinary discu-ssions considered intra-abdominal tumor displacement and inguinal hernia,and intraoperative exploration confirmed that the greater omentum tumor protruded into the ***,tumor resection and tension-free inguinal hernia repair were *** final diagnosis was benign fibroma of the greater omentum accompanied by an indirect inguinal *** This unusual presentation of a common inguinal hernia disease illustrates the necessity of performing detailed history taking,physical examination,and imaging before surgery.

关键词： hernia Indirect inguinal hernia Fibroma Omental tumor Scrotal tumor Greater omentum Case report