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Observation of robust anisotropy in WS_(2)/BP heterostructures

Nano Research 2024年第7期17卷 6749-6756页

作者： Xinran Li Xing Xie biao wu Junying Chen Shaofei Li Jun He Zongwen Liu Jian-Tao Wang Yanping Liu Institute of Quantum Physics School of PhysicsCentral South University932 South Lushan RoadChangsha 410083China State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South University932 South Lushan RoadChangsha 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia The University of Sydney Nano Institute The University of SydneyNSW 2006Australia Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China Shenzhen Research Institute of Central South University Shenzhen 518000China

Two-dimensional(2D)anisotropic materials have garnered significant attention in the realm of anisotropic optoelectronic devices due to their remarkable electrical,optical,thermal,and mechanical *** extensive research has delved into the optical and electrical characteristics of these materials,there remains a need for further exploration to identify novel materials and structures capable of fulfilling device requirements under various ***,we employ heterojunction interface engineering with black phosphorus(BP)to disrupt the C_(3) rotational symmetry of monolayer WS_(2).The resulting WS_(2)/BP heterostructure exhibits pronounced anisotropy in exciton emissions,with a measured anisotropic ratio of 1.84 for neutral *** a comprehensive analysis of magnetic-field-dependent and temperature-evolution photoluminescence spectra,we discern varying trends in the polarization ratio,notably observing a substantial anisotropy ratio of 1.94 at a temperature of 1.6 K and a magnetic field of 9 *** dynamic behavior is attributed to the susceptibility of the WS_(2)/BP heterostructure interface strain to fluctuations in magnetic fields and *** findings provide valuable insights into the design of anisotropic optoelectronic devices capable of adaptation to a range of magnetic fields and temperatures,thereby advancing the frontier of material-driven device engineering.

关键词： two-dimensional materials in-plane anisotropy black phosphorus heterojunctions optoelectronic devices photoluminescence spectra

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Unveiling strain-enhanced moiréexciton localization in twisted van der Waals homostructures

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Nano Research 2024年第4期17卷 3245-3252页

作者： Henry Rui He Haihong Zheng biao wu Shaofei Li Junnan Ding Zongwen Liu Jian-Tao Wang Anlian Pan Yanping Liu Institute of Quantum Physics School of PhysicsCentral South UniversityChangsha 410083China State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South UniversityChangsha 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China College of Materials Science and Engineering Hunan UniversityChangsha 410082China State Key Laboratory of High-Performance Complex Manufacturing Central South UniversityChangsha 410083China Shenzhen Research Institute of Central South University Shenzhen 51800China

Moirésuperlattices,arising from the controlled twisting of van der Waals homostructures at specific angles,have emerged as a promising platform for quantum emission ***,the manipulation of strain provides a versatile strategy to finely adjust electronic band structures,enhance exciton luminescence efficiency,and establish a robust foundation for two-dimensional quantum light ***,the intricate interplay between strain and moirépotential remains partially ***,we introduce a meticulously designed fusion of strain engineering and the twisted 2L-WSe_(2)/2L-WSe_(2) homobilayers,resulting in the precise localization of moiré*** low-temperature photoluminescence spectroscopy,we unveil the emergence of highly localized moiré-enhanced emission,characterized by the presence of multiple distinct emission ***,our investigation demonstrates the effective regulation of moirépotential depths through strain engineering,with the potential depths of strained and unstrained regions differing by 91%.By combining both experimental and theoretical approaches,our study elucidates the complex relationship between strain and moirépotential,thereby opening avenues for generating strain-induced moiréexciton single-photon sources.

关键词： moirésuperlattices strain engineering moiréexcitons moirépotential

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Re-evaluation of recent research on metabolic utilization of energy in poultry: Recommendations for a net energy system for broilers

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Animal Nutrition 2024年第1期16卷 62-72页

作者： Jean Noblet Aye-Cho Tay-Zar Shu-biao wu Pairat Srichana Pierre Cozannet Pierre-Andre Geraert Mingan Choct INRAE Charoen Pokphand Foods Public Company Limited (CPF) School of Environmental and Rural Science University of New England Adisseo France S.A.S.

Different energy systems have been proposed for energy evaluation of feeds for domestic animals. The oldest and most commonly used systems take into account the fecal energy loss to obtain digestible energy(DE), and fecal, urinary and fermentation gases energy losses to calculate metabolizable energy(ME). In the case of ruminants and pigs, the net energy(NE) system, which takes into account the heat increment associated with the metabolic utilization of ME, has progressively replaced the DE and ME systems over the last 50 years. For poultry, apparent ME(AME) is used exclusively and NE is not yet used widely. The present paper considers some important methodological points for measuring NE in poultry feeds and summarizes the available knowledge on NE systems for poultry. NE prediction equations based on a common analysis of three recent studies representing a total of 50 complete and balanced diets fed to broilers are proposed; these equations including the AME content and easily available chemical indicators have been validated on another set of 30 diets. The equations are applicable to both ingredients and complete diets. They rely primarily on an accurate and reliable AME value which then represents the first limiting predictor of NE value. Our analysis indicates that NE would be a better predictor of broiler performance than AME and that the hierarchy between feeds is dependent on the energy system with a higher energy value for fat and a lower energy value for protein in an NE system. Practical considerations for implementing such an NE system from the commonly used AME or AMEn(AME adjusted for zero nitrogen balance) systems are presented. In conclusion, there is sufficient information to allow the implementation of the NE concept in order to improve the accuracy of feed formulation in poultry.

关键词： Poultry Feed evaluation Net energy Energy system

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Influence of reduced-port laparoscopic surgery on perioperative indicators, postoperative recovery, and serum inflammation in patients with colorectal carcinoma

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1734-1741页

作者： Hong-biao wu Dong-Fang Liu Ye-Lei Liu Xiao-Feng Wang Yue-Peng Cao Department of Colorectal Surgery The First Affiliated Hospital of Ningbo UniversityNingbo 315000Zhejiang ProvinceChina

BACKGROUND Conventional five-port laparoscopic surgery,the current standard treatment for colorectal carcinoma(CRC),has many *** To assess the influence of reduced-port laparoscopic surgery(RPLS)on perioperative indicators,postoperative recovery,and serum inflammation indexes in patients with *** The study included 115 patients with CRC admitted between December 2019 and May 2023,52 of whom underwent conventional five-port laparoscopic surgery(control group)and 63 of whom underwent RPLS(research group).Comparative analyses were performed on the following dimensions:Perioperative indicators[operation time(OT),incision length,intraoperative blood loss(IBL),and rate of conversion to laparotomy],postoperative recovery(first postoperative exhaust,bowel movement and oral food intake,and bowel sound recovery time),serum inflammation indexes[high-sensitivity C-reactive protein(hs-CRP),tumor necrosis factor-α(TNF-α),and interleukin-6(IL-6)],postoperative complications(anastomotic leakage,incisional infection,bleeding,ileus),and therapeutic *** The two groups had comparable OTs and IBL ***,the research group had a smaller incision length;lower rates of conversion to laparotomy and postoperative total complication;and shorter time of first postoperative exhaust,bowel movement,oral food intake,and bowel sound recovery;all of which were ***,hs-CRP,IL-6,and TNF-αlevels in the research group were significantly lower than the baseline and those of the control group,and the total effective rate was *** RPLS exhibited significant therapeutic efficacy in CRC,resulting in a shorter incision length and a lower conversion rate to laparotomy,while also promoting postoperative recovery,effectively inhibiting the inflammatory response,and reducing the risk of postoperative complications.

关键词： Reduced-port laparoscopic surgery Colorectal carcinoma Perioperative indicators Postoperative recovery Serum inflammation indexes

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A Research Progress of CO_(2)-Responsive Plugging Channeling Gels

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Energy Engineering 2024年第7期121卷 1759-1780页

作者： Yang Xiong Jianxin Liu Xianhao Yi Bangyan Xiao Dan wu biao wu Chunyu Gao Key Laboratory of Drilling and Production Engineering for Oil and Gas Yangtze UniversityWuhan430100China School of Petroleum Engineering Yangtze UniversityWuhan430100China

In the heterogeneous reservoirs,CO_(2) flooding easily leads to CO_(2) gas channeling,which can seriously affect sweeping efficiency and reduce oil *** thoroughly investigating the advantages and shortcomings of various CO_(2) plugging technologies,this paper focuses on the feasibility of improving conventional water-alternating gas(WAG)through CO_(2)-responsive gel *** on the different chemical reaction mechanisms between the unique chemical structure and CO_(2),changes in the material’s physical and chemical properties can respond to CO_(2).The feasibility of utilizing these property changes for CO_(2)-responsive plugging is *** CO_(2)-responsive gels and gel nanoparticles have been extensively researched in different fields,such as energy,medicine,and *** paper surveys the molecular structures,chemical compositions,response mechanisms,and changes of these CO_(2)-responsive gels,aiming to draw insights into the carbon dioxide-enhanced oil recovery(CO_(2)-EOR)***,the key issues and future development direction of CO_(2)-responsive plugging gels were analyzed.

关键词： Gas channeling sweep efficiency CO_(2)-responsive gel CO_(2)-EOR

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Advancing gastrointestinal stromal tumor management: The role of imagomics features in precision risk assessment

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World Journal of Gastrointestinal Surgery 2024年第9期16卷 2942-2952页

作者： Gui-Hai Pan Fei Zhou wu-biao Chen Ze-Jun Pan Department of Radiology The Affiliated Hospital of Guangdong Medical UniversityZhanjiang 524001Guangdong ProvinceChina Department of Endocrinology The Affiliated Hospital of Guangdong Medical UniversityZhanjiang 524001Guangdong ProvinceChina

BACKGROUND Gastrointestinal stromal tumors(GISTs)vary widely in prognosis,and traditional pathological assessments often lack precision in risk *** imaging techniques,especially magnetic resonance imaging(MRI),offer potential *** study investigates how MRI imagomics can enhance risk assessment and support personalized treatment for GIST *** To assess the effectiveness of MRI imagomics in improving GIST risk stratification,addressing the limitations of traditional pathological *** Analyzed clinical and MRI data from 132 GIST patients,categorizing them by tumor specifics and dividing into risk *** dimension reduction for optimal imagomics feature selection from diffusion-weighted imaging(DWI),T1-weighted imaging(T1WI),and contrast enhanced T1WI with fat saturation(CET1WI)fat suppress(fs)*** Age,lesion diameter,and mitotic figures significantly correlated with GIST risk,with DWI sequence features like sphericity and regional entropy showing high predictive *** combined T1WI and CE-T1WI fs model had the best predictive *** the test group,the DWI sequence model demonstrated an area under the curve(AUC)value of 0.960 with a sensitivity of 80.0%and a specificity of 100.0%.On the other hand,the combined performance of the T1WI and CE-T1WI fs models in the test group was the most robust,exhibiting an AUC value of 0.834,a sensitivity of 70.4%,and a specificity of 85.2%.CONCLUSION MRI imagomics,particularly DWI and combined T1WI/CE-T1WI fs models,significantly enhance GIST risk stratification,supporting precise preoperative patient assessment and personalized treatment *** clinical implications are profound,enabling more accurate surgical strategy formulation and optimized treatment selection,thereby improving patient *** research should focus on multicenter studies to validate these findings,integrate advanced imaging technologies like PET/MRI,and incorporat

关键词： Gastrointestinal stromal tumor Magnetic resonance imaging Imagomics Risk stratification Precision medicine Diffusion-weighted imaging T1-weighted imaging Contrast enhanced T1-weighted imaging with fat saturation fat suppress

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多因素耦合的混凝土结构硫酸盐传输多尺度模拟分析

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中南大学学报（自然科学版） 2024年第4期55卷 1374-1387页

作者：郭文华吴彪陈定市中南大学土木工程学院湖南长沙410075

提出一种能考虑多因素耦合的混凝土结构硫酸盐传输多尺度模拟分析方法。基于Fick第二定律与化学反应动力学提出一种同时包括离子浓度梯度作用、考虑离子活性的化学反应消耗、钙溶蚀、钙矾石膨胀、温度等多因素耦合的硫酸盐传输模型。首... 详细信息

提出一种能考虑多因素耦合的混凝土结构硫酸盐传输多尺度模拟分析方法。基于Fick第二定律与化学反应动力学提出一种同时包括离子浓度梯度作用、考虑离子活性的化学反应消耗、钙溶蚀、钙矾石膨胀、温度等多因素耦合的硫酸盐传输模型。首先,将混凝土结构等效为一种匀质材料,从宏观尺度研究匀质混凝土结构硫酸盐传输规律,通过与试验结果对比,验证传输模型的有效性。然后,基于Monte Carlo方法和Fuller级配曲线,建立能够真实反映混凝土随机性与非均质性的随机骨料混凝土模型,从细观尺度研究在随机粒径和位置的骨料影响下混凝土结构硫酸盐传输特征。研究结果表明:当外界硫酸根离子质量分数越大、温度越高、孔隙溶液中钙离子浓度越大时,混凝土中硫酸根离子质量分数显著增大。钙溶蚀固液平衡转化比其导致的混凝土孔隙率改变对硫酸根离子传输的影响更显著;此外,细观尺度下的硫酸盐传输模型很好体现了骨料的粒径和位置的随机性导致的硫酸根离子浓度分布呈现的随机性与不均匀性现象,同时,骨料的存在使得靠近侵蚀边界的骨料外侧硫酸根离子聚集偏多,远离侵蚀边界的骨料外侧硫酸根离子质量分数偏低。

关键词：硫酸盐传输随机骨料混凝土多尺度

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基于信息间隙决策理论-分布鲁棒优化的含电-氢-热混合储能综合能源系统需求响应策略

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电网技术 2024年第3期48卷 1030-1042页

作者：吴彪张少华王晛洪思远上海大学机电工程与自动化学院上海市宝山区200444

混合储能系统具有储能容量大、调节能力强等优点,有助于提高综合能源系统(integrated energy system,IES)的需求响应能力。首先,构建了一种电-氢-热混合储能系统(electric-hydrogen-thermal hybrid energy storage system,EHT-HESS),其中采用电解槽(electrolytic cell,EC)、蒸气重整反应(steam methane reforming,SMR)装置、储氢、热电联产氢燃料电池(hydrogen fuel cell,HFC)设备,实现电、气向氢能的转换,以及以氢能作为中间模态的“制氢-储氢-放氢/电/热”功能。其次,建立考虑EHT-HESS的IES需求响应策略优化模型,其中考虑IES响应电价和气价,同时根据富余风电量,进行购电、购气、用电、用热、用氢等策略决策的综合需求响应(integrated demand response,IDR)行为;并采用信息间隙决策理论(information gap decision theory,IGDT)计入概率分布未知的风电严重不确定性,采用基于综合范数的分布鲁棒优化(distributionally robust optimization,DRO)方法计入概率分布不完备的电价严重不确定性。最后,算例验证了模型和方法的合理性及有效性,并表明IES装设热电联产HFC构建EHT-HESS可实现氢能向电能与热能的转换,有助于增加风电消纳量,增加IDR决策的鲁棒性。

关键词：综合能源系统电-氢-热混合储能系统综合需求响应信息间隙决策理论分布鲁棒优化

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Combined ATAC-seq,RNA-seq,and GWAS analysis reveals glycogen metabolism regulatory network in Jinjiang oyster(Crassostrea ariakensis)

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Zoological Research 2024年第1期45卷 201-214页

作者： biao wu Xi Chen Jie Hu Zhen-Yuan Wang Yan Wang Da-You Xu Hao-Bing Guo Chang-Wei Shao Li-Qing Zhou Xiu-Jun Sun Tao Yu Xiao-Mei Wang Yan-Xin Zheng Guang-Yi Fan Zhi-Hong Liu State Key Laboratory of Mariculture Biobreeding and Sustainable Goods Yellow Sea Fisheries Research InstituteChinese Academy of Fishery SciencesQingdaoShandong 266071China Laboratory for Marine Fisheries Science and Food Production Processes Laoshan LaboratoryQingdaoShandong 266071China BGI-Qingdao BGI-ShenzhenQingdaoShandong 266426China National Demonstration Center for Experimental Fisheries Science Education Shanghai Ocean UniversityShanghai 201306China Changdao Enhancement and Experiment Station Chinese Academy of Fishery SciencesYantaiShandong 265800China State Key Laboratory of Agricultural Genomics BGI-ShenzhenShenzhenGuangdong 518083China

Glycogen serves as the principal energy reserve for metabolic processes in aquatic shellfish and substantially contributes to the flavor and quality of *** Jinjiang oyster(Crassostrea ariakensis)is an economically and ecologically important species in *** the present study,RNA sequencing(RNA-seq)and assay for transposase-accessible chromatin using sequencing(ATAC-seq)were performed to investigate gene expression and chromatin accessibility variations in oysters with different glycogen *** identified 9483 differentially expressed genes(DEGs)and 7215 genes with significantly differential chromatin accessibility(DCAGs)were obtained,with an overlap of 2600 genes between ***,a significant proportion of these genes were enriched in pathways related to glycogen metabolism,including“Glycogen metabolic process”and“Starch and sucrose metabolism”.In addition,genome-wide association study(GWAS)identified 526 single nucleotide polymorphism(SNP)loci associated with glycogen *** loci corresponded to 241 genes,63 of which were categorized as both DEGs and *** study enriches basic research data and provides insights into the molecular mechanisms underlying the regulation of glycogen metabolism in ***.

关键词： Crassostrea ariakensis Glycogen Transcriptome ATAC GWAS

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超声特征Logistic回归模型对肾上腺节细胞神经瘤与嗜铬细胞瘤鉴别诊断价值

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中国超声医学杂志 2024年第2期40卷 195-197页

作者：武标何年安中国科学技术大学附属第一医院(安徽省立医院)超声医学科

目的建立以超声特征为自变量Logistic回归模型，评估超声特征对肾上腺节细胞神经瘤(AGN)与嗜铬细胞瘤(APHEO)鉴别诊断价值。方法回顾性分析经病理证实的32例AGN与78例APHEO患者(共112个肿瘤)的临床资料及肿瘤超声特征，单因素分析两... 详细信息

目的建立以超声特征为自变量Logistic回归模型，评估超声特征对肾上腺节细胞神经瘤(AGN)与嗜铬细胞瘤(APHEO)鉴别诊断价值。方法回顾性分析经病理证实的32例AGN与78例APHEO患者(共112个肿瘤)的临床资料及肿瘤超声特征，单因素分析两组患者临床特征与肿瘤超声特征，筛选鉴别两者的独立影响因素，并构建Logistic回归模型。结果两组肿瘤在年龄、高血压、内部回声、钙化、血供、囊变及生长方式方面差异具有统计学意义(P<0.001);内部回声、钙化与血供是鉴别两者的独立影响因素；Logistic回归模型鉴别AGN与APHEO的受试者工作特征(ROC)曲线下面积为0.818,准确度、灵敏度、特异度分别为80.40%、87.20%、64.70%。结论超声特征Logistic回归模型有助于鉴别诊断AGN与APHEO,且诊断价值较高。

关键词：超声特征节细胞神经瘤嗜铬细胞瘤

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