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Triple points and phase transitions of D-dimensional dyonic Ad S black holes with quasitopological electromagnetism in Einstein–Gauss–Bonnet gravity

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Chinese Physics B 2024年第6期33卷 272-287页

作者：牟平辉蒋青权何柯腱李国平 School of Physics and Astronomy China West Normal UniversityNanchong 637000China College of Physics Chongqing UniversityChongqing 401331China

By considering the negative cosmological constant Λ as a thermodynamic pressure, we study the thermodynamics and phase transitions of the D-dimensional dyonic Ad S black holes(BHs) with quasitopological electromagnetism in Einstein–Gauss–Bonnet(EGB) gravity. The results indicate that the small/large BH phase transition that is similar to the van der Waals(vdW) liquid/gas phase transition always exists for any spacetime dimensions. Interestingly, we then find that this BH system exhibits a more complex phase structure in 6-dimensional case that is missed in other ***, it shows for D = 6 that we observed the small/intermediate/large BH phase transitions in a specific parameter region with the triple point naturally appeared. Moreover, when the magnetic charge turned off, we still observed the small/intermediate/large BH phase transitions and triple point only in 6-dimensional spacetime, which is consistent with the previous results. However, for the dyonic Ad S BHs with quasitopological electromagnetism in Einstein–Born–Infeld(EBI) gravity, the novel phase structure composed of two separate coexistence curves observed by Li et al. [Phys. Rev. D105 104048(2022)] disappeared in EGB gravity. This implies that this novel phase structure is closely related to gravity theories, and seems to have nothing to do with the effect of quasitopological electromagnetism. In addition, it is also true that the critical exponents calculated near the critical points possess identical values as mean field theory. Finally, we conclude that these findings shall provide some deep insights into the intriguing thermodynamic properties of the dyonic Ad S BHs with quasitopological electromagnetism in EGB gravity.

关键词： AdS black hole phase transition triple point

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发酵牡丹籽对育肥猪生长性能、养分表观消化率和血清生化指标的影响

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中国饲料 2024年第14期 125-128页

作者：姜萍郎闯窦立静济南市动物疫病预防与控制中心山东济南250109 黑龙江省农业科学院黑龙江哈尔滨150086 新疆兵团第八师畜牧兽医工作站新疆石河子832000

文章旨在研究发酵牡丹籽对育肥猪生长性能、养分表观消化率和血清生化指标的影响。试验将320头DLY三元杂交阉公猪[(64.26±1.73)kg]随机分为4组,每组10个重复,每个重复8头,对照组使用基础日粮、试验组Ⅰ使用6%牡丹籽替代豆粕、试验组Ⅱ... 详细信息

文章旨在研究发酵牡丹籽对育肥猪生长性能、养分表观消化率和血清生化指标的影响。试验将320头DLY三元杂交阉公猪[(64.26±1.73)kg]随机分为4组,每组10个重复,每个重复8头,对照组使用基础日粮、试验组Ⅰ使用6%牡丹籽替代豆粕、试验组Ⅱ使用3%的发酵牡丹籽替代牡丹籽、试验组Ⅲ使用6%发酵牡丹籽替代牡丹籽,试验为期35 d。结果表明,与对照组相比,6%的发酵牡丹籽组终末体重显著降低1.77%、平均日增重显著降低6.38%、料重比显著提高6.38%(P<0.05);与6%牡丹籽组相比,6%发酵牡丹籽组育肥猪终末体重显著提高2.40%、平均日增重显著提高6.72%、料重比显著降低7.38%(P<0.05);6%牡丹籽组育肥猪干物质、粗脂肪和粗蛋白表观消化率显著降低(P<0.05);与6%牡丹籽组相比,6%发酵牡丹籽组育肥猪干物质、粗脂肪和粗蛋白表观消化率显著提高(P<0.05)。6%牡丹籽组育肥猪血清ALT活性显著高于其他各组(P<0.05);6%发酵牡丹籽组育肥猪血清甘油三酯含量显著低于其他各组(P<0.05);6%发酵牡丹籽组育肥猪血清GSH-Px活性与对照组无显著差异,但显著高于其他处理组(P<0.05);牡丹籽组育肥猪血清MDA含量显著高于其他各组(P<0.05)。结论:发酵处理能部分缓解牡丹籽对育肥猪生长发育的负面影响,其促生机制可能与消化率的提高和血清生化指标的改善有关。

关键词：发酵牡丹籽育肥猪生长性能养分表观消化率血清生化指标

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基于应变石墨烯基底的有机分子薄膜溶液外延生长研究

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绍兴文理学院学报 2024年第8期44卷 86-95页

作者：赵萍窦卫东绍兴文理学院数理信息学院浙江绍兴312000

有机半导体器件中的载流子微观动力学行为受有机分子的吸附取向和排列结构的影响极大。因此,研究有机分子在衬底表面的堆栈行为对于促进高性能有机半导体器件的研究极为重要。石墨烯具有模板效应,可促进有机分子的有序堆栈,从而能极大... 详细信息

有机半导体器件中的载流子微观动力学行为受有机分子的吸附取向和排列结构的影响极大。因此,研究有机分子在衬底表面的堆栈行为对于促进高性能有机半导体器件的研究极为重要。石墨烯具有模板效应,可促进有机分子的有序堆栈,从而能极大地提高相应器件的性能。在π-π耦合相互作用驱使下,有机分子(通常具有平面芳香环结构)在石墨烯衬底上通常呈现“平躺”式吸附模式。如何克服有机分子在石墨烯基底上吸附取向的单一性是“石墨烯基有机器件”研究亟待解决的问题。本文提出一种利用石墨烯应变和空间微形貌协同调控有机分子吸附取向的新策略,在具有周期性纳米级弯曲结构的石墨烯上实现了具有直立分子取向的二维超薄C8-BTBT薄膜的外延生长。研究发现,石墨烯弯曲程度和应变共同决定了C8-BTBT分子的直立几何形状及其在石墨烯表面的定向生长。本研究为控制二维材料界面上的分子外延向功能异质结构方向发展提供了一种可行的途径。

关键词：有机分子薄膜外延生长应变石墨烯

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Loss of heterozygosity for chromosomes 16q in Wilms tumors predicts outcomes:A meta-analysis

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 2159-2167页

作者： Yuan-Hua Song Wen-Ling Li Zhen Yang Yan Gao Zhi-ping Feng Department of Oncology Kunming Children's HospitalKunming 650103Yunnan ProvinceChina Department of Nuclear Medicine The Third Affiliated Hospital of Kunming Medical University(Yunnan Cancer Hospital)Kunming 650118Yunnan ProvinceChina

BACKGROUND The research findings suggest that the prognosis of children with Wilms tumor(WT)is affected by various *** scholars have indicated that loss of heterozygosity(LOH)on chromosome 16q is associated with a poor prognosis in patients with *** To further elucidate this relationship,we conducted a *** This meta-analysis was registered in INPLASY(INPLASY2023100060).We systematically searched databases including Embase,PubMed,Web of Science,Cochrane,and Google Scholar up to May 31,2020,for randomized trials reporting any intrapartum fetal surveillance *** meta-analysis was performed within a frequentist framework,and the quality and network inconsistency of trials were *** ratios and 95%CIs were calculated to report the relationship between event-free survival and 16q LOH in patients with *** Eleven cohort studies were included in this meta-analysis to estimate the relationship between event-free survival and 16q LOH in patients with WT(I^(2)=25%,Pq LOH can serve as an effective predictor of eventfree survival in patients with WT(risk ratio=1.95,95%CI:1.52–2.49,Pq LOH and an unfavorable treatment *** detection of 16q chromosome LOH warrants increased attention to the patient’s prognosis.

关键词： Loss of heterozygosity Wilms tumor Survival time Chromosomes 16q

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VALUE-ADDED SERVICE INVESTING AND PRICING STRATEGIES FOR A TWO-SIDED PLATFORM UNDER INVESTING RESOURCE CONSTRAINT

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Journal of Systems Science and Systems Engineering 2017年第5期26卷 609-627页

作者： Guowei dou ping He Research Institute of Business Analytics and Supply Chain Management Postdoctoral Station of Theoretical Economics School of Management Shenzhen University Shenzhen Guangdong 518060 PR China School of Management Zhejiang University Hangzhou Zhejiang 310058 PR China

Investing on value-added service （VAS） amplifies users＇ participation and platform profit. However, the investing resource is usually limited in practice. This paper investigates VAS investing and pricing strategies for a two-sided platform under investing resource constraint. We reveal that with VAS investment, Subsidizing can still be done to enlarge users＇ demand, even when the investing cost becomes higher. For optimal pricing strategies, the network effect will be the dominating determinant if the gap between two marginal cross-side benefits （i.e. the benefit that users obtain when each new user join the other side of the platform） is large. Interestingly, we show that with the increase of the marginal investing cost, users might either be priced higher or lower. If the marginal investing cost increases to a high level, and the gap between the two marginal cross-side benefits is large, lowering the access fee for users possessing the higher eross-side network effect does not necessarily compensate more profit loss caused by higher cost. Moreover, after VAS is developed, raising the access fee for those whose marginal investing benefit is large does not necessarily generate more profit as well. The opposite strategy further enlarges users＇ utility, and promotes the investment to benefit more users.

关键词： Network effect optimization two-sided market value-added service investment investingresource constraint

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Simplified p-i-n Perovskite Solar Cells with a Multifunctional Polyfullerene Electron Transporter

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Chinese Journal of Polymer Science 2024年第8期42卷 1060-1066页

作者： Fei-Fei Wang Tian-Xiao Liu Ze-Wei Cui Ling-Yuan Wang Yun-Jie dou Xiao-Yu Shi Si-Wei Luo Xiao-Dong Hu Zhi-Jun Ren Yang-Yang Liu Yu Zhao Shang-Shang Chen State Key Laboratory of Coordination Chemistry MOE Key Laboratory of High Performance Polymer Materials&TechnologySchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 21003China

In prevailing p-i-n perovskite solar cells(PSCs),solution-processible fullerene molecules are widely used as electron-transporting layers(ETLs)but they typically suffer from poor uniformity and undesirable stability ***,a separate bathocuproine(BCP)layer is needed to block hole tran sfer,increasing fabrication complexity and ***,we address these limitations by develo ping a novel polymeric ETL(named PF BCP)synthesized by polymerizing C_(60)with *** innovative material achieves both efficient electron transport and hole blocking,while its excellent uniformity minimizes interface recombination and enhances ***,our blade-coated PSCs utilizing PFBCP achieve a high power conversion efficiency exceeding 22%and retain 91%of initial efficiency after 1200 h of light *** development not only paves the way for commercially viable PSCs but also opens avenues for future ETL design to realize even more efficient and stable PSCs.

关键词： Polyfullerene Perovskite solar cells Electron transporter Stability

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Gas source of the Middle Jurassic Shaximiao Formation in the Zhongjiang large gas field of Western Sichuan Depression:Constraints from geochemical characteristics of light hydrocarbons

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Energy Geoscience 2024年第2期5卷 141-151页

作者： Xiaoqi Wu Jun Yang ping Wang Huaji Li Yingbin Chen Chunhua Ni Huasheng Zeng Wuxi Research Institute of Petroleum Geology Petroleum Exploration and Production Research InstituteSINOPECWuxi214126China Key Laboratory of Hydrocarbon Accumulation SINOPECWuxi214126China No.3 Gas Production Plant Southwest Petroleum BranchSINOPECDeyang618000China

The Zhongjiang gas field is a typical large gas field in terrigenous strata of the Western Sichuan *** remains debatable which member of the Upper Triassic Xujiahe Formation served as the source rocks and how significant the member contributed to the gas accumulations in the Zhongjiang gas *** this study,we analyzed the essential characteristics of the Lower Jurassic source rocks and the geochemical features of light hydrocarbons in natural gas from the 2nd(T_(3)χ^(2))and 4th members(T_(3)χ^(4))of the Upper Triassic Xujiahe Formation(T_(3)χ),as well as the Middle Jurassic Shaximiao(J_(2)s)and qianfoya(J_(2)q)*** on this,we explored the sources of the natural gas in the Zhongjiang gas field and determined the natural gas migration patterns and their effects on the properties of light hydrocarbons in the natural *** results indicate that the Lower Jurassic lacustrine source rocks of the Zhongjiang gas field contain humic organic matter,with vitrinite reflectance(R_(0))values ranging from 0.86%to 0.98%.Samples meeting the criterion for effective source rocks[total organic carbon(TOC)content≥0.75%]exhibited an average TOC content of merely 1.02%,suggesting significantly lower hydrocarbon generation potential than source rocks in the underlying T3x,which show higher thermal maturity and TOC *** natural gas samples from T_(3)χ^(2),T_(3)χ^(4),J_(2)s,and J_(2)q reservoirs,their C_(5-7)iso-alkane content was significantly higher than their n-alkane content,and their methylcyclohexane(MCH)index ranged from 59.0%to 77.3%,indicating the predominance of methylcyclohexane in C_(7)light *** indicated by the origin identification and gas-source correlation based on the geochemical features of light hydrocarbons,the natural gas in the Zhongjiang gas field is typical coal-derived *** gas from the primary pay zone of the Shaximiao Formation,with significantly high K_(1),(P_(2)+N_(2))/C_(7),and P_(3)/C_(7)values,predominantly ori

关键词： Zhongjiang gas field Source rock Origin of natural gas Light hydrocarbon geochemistry Natural gas migration

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多晶材料散射模型及识别实验研究

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物理学报 2024年第3期73卷 134-142页

作者：刘昱贺西平贺升平陕西师范大学物理学与信息技术学院陕西省超声重点实验室西安710119 泸州高新技术研究所泸州646000

超声波识别在国防、军事、航空航天、核设施等高科技领域具有重要的应用价值.利用超声波可以实现对个体金属材料的识别,但现有研究侧重于识别材料超声信号差异的算法,缺乏识别机理.本文以2A12铝合金为例,利用6个晶粒在尺寸、形状、排布... 详细信息

超声波识别在国防、军事、航空航天、核设施等高科技领域具有重要的应用价值.利用超声波可以实现对个体金属材料的识别,但现有研究侧重于识别材料超声信号差异的算法,缺乏识别机理.本文以2A12铝合金为例,利用6个晶粒在尺寸、形状、排布方向以及排列顺序不同时,建立了10个2A12铝合金微结构的初级模型,以此类比多晶金属材料的复杂微观结构.利用Comsol有限元软件仿真计算了金属材料不同微观结构中的超声波时域信号,并将回波信号中的的背向散射信号提取为超声指纹.定义了特征差异q,量化了具有不同微结构的散射模型间的超声指纹的差异.结果表明,微观结构的细微变化也会导致超声信号出现差异,其中晶粒尺寸的变化对信号的影响更为显著.随后提出了超声识别算法,并对4块形状完全一致的2A12铝合金样品进行了识别实验.识别结果表明,利用超声指纹可以准确识别出目标样品,且各样品间的超声指纹有显著区别.最后对样品进行了扫描电子显微镜实验,所得电子显微镜图片显示了各样品真实微观结构的形貌与差异,证实了所建立的超声散射模型的有效性.

关键词：超声散射微观结构多晶材料超声识别有限元方法

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连续管磨损程度及剩余抗内压强度敏感性分析

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机械设计与制造 2024年第8期402卷 80-83页

作者：曹银萍潘莹窦益华郑杰西安石油大学机械工程学院陕西西安710065

针对连续管在水平井中下入起出时与套管内壁产生摩擦磨损的问题,借鉴钻杆-套管磨损模型建立思路,采用“磨损-效率”模型,研究下入起出时连续管摩擦磨损,获得了连续管外壁磨损深度的计算方法与公式;利用ANSYS Workbench有限元软件分析了... 详细信息

针对连续管在水平井中下入起出时与套管内壁产生摩擦磨损的问题,借鉴钻杆-套管磨损模型建立思路,采用“磨损-效率”模型,研究下入起出时连续管摩擦磨损,获得了连续管外壁磨损深度的计算方法与公式;利用ANSYS Workbench有限元软件分析了连续管外径、壁厚、钢级、磨损率等敏感性因素对磨损连续管剩余抗内压强度的影响规律。研究表明:磨损率不同,井下磨损连续管最先屈服的部位亦不同;Φ44.45mm×3.96mm的qT-900连续管磨损率从0%到25%时,剩余抗内压强度下降率为35%;磨损连续管剩余抗内压强度随壁厚和钢级的增加而非线性增大,随外径和磨损率的增大而非线性降低;磨损率对连续管剩余抗内压强度的影响最强。研究结果可为磨损后连续管施工参数提供指导。

关键词：连续管磨损程度剩余强度有限元敏感性分析

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Identification and Validation of SLC9A2 as A Potential Tumor Suppressor in Colorectal Cancer:Integrating Bioinformatics Analysis with Experimental Confirmation

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Current Medical Science 2024年第3期44卷 529-544页

作者： Yan-min LIU Tie-cheng YANG Xiao-chang FANG Li-jie YANG Li-wen SHI Hua-qiao WANG Ting-ting dou Lin SHU Tian-Liang CHEN Jun HU Xiao-ming YU Xuan-fei LI Department of Gastroenterology the Central Hospital of WuhanKey Laboratory for Molecular Diagnosis of Hubei ProvinceTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430014China Department of Gastrointestinal Surgery Zhongnan Hospital of Wuhan UniversityWuhan430071China Clinical Medical Research Center of Peritoneal Cancer of Wuhan Wuhan430071China Hubei Provincial Clinical Research Center for Cancer Hubei Key Laboratory of Tumor Biological Behavi Wuhan430071China Department of General Surgery Taihe HospitalHubei University of MedicineShiyan442000China Department of Gastrointestinal Surgery Huangshi Central HospitalAffiliated Hospital of Hubei Polytechnic UniversityWuhan435001China

Objective To uncover the mechanisms underlying the development of colorectal cancer(CRC),we applied bioinformatic analyses to identify key genes and experimentally validated their possible roles in CRC onset and *** We performed Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis on differentially expressed genes(DEGs),constructed a protein-protein interaction(PPI)network to find the top 10 hub genes,and analyzed their expression in colon adenocarcinoma(COAD)and rectum adenocarcinoma(READ).We also studied the correlation between these genes and immune cell infiltration and prognosis and validated the expression of SLC9A2 in CRC tissues and cell lines using qRT-PCR and Western *** experiments were conducted in vitro to investigate the effects of SLC9A2 on tumor growth and *** We found 130 DEGs,with 45 up-regulated and 85 down-regulated in *** analysis indicated that these DEGs were primarily enriched in functions related to the regulation of cellular pH,zymogen granules,and transmembrane transporter *** pathway analysis revealed that the DEGs played pivotal roles in pancreatic secretion,rheumatoid arthritis,and the IL-17 signaling *** identified 10 hub genes:CXCL1,SLC26A3,CXCL2,MMP7,MMP1,SLC9A2,SLC4A4,CLCA1,CLCA4,and *** enrichment analysis showed that these hub genes were predominantly involved in the positive regulation of *** expression analysis revealed that CXCL1,CXCL2,MMP1,and MMP7 were highly expressed in CRC,whereas CLCA1,CLCA4,SLC4A4,SLC9A2,SLC26A3,and ZG16 were expressed at lower *** analysis revealed that 5 key genes were significantly associated with the prognosis of *** mRNA and protein expression levels of SLC9A2 were markedly reduced in CRC tissues and cell ***,SLC9A2 overexpression in SW480 cells led to a notable inhibition of cell proliferation,migration,and *** blotting analysis revealed tha

关键词： SLC9A2 colorectal cancer bioinformatic analysis biomarkers immune infiltrate

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