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Studies on absorption coefficients of dual-energy γ-rays and measur-ing error correction for multiphase fraction determination

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Nuclear Science and Techniques 2006年第2期17卷 86-91页

作者： li Zhi-Biao wu Ying-xiang li Dong-Hui Institute of Mechanics the Chinese Academy of Sciences Beijing 100080 China

In this article, principle and mathematical method of determining the phase fractions of multiphase flows by using a dual-energy γ -ray system have been described. The dual-energy γ -ray device is composed of radioactive isotopes of 241Am and 137Cs with γ -ray energies of 59.5 and 662 keV, respectively. A rational method to calibrate the absorption coefficient was introduced in detail. The modified arithmetic is beneficial to removing the extra Compton scattering from the measured value. The result shows that the dual-energy γ -ray technique can be used in three-phase flow with average accuracy greater than 95%, which enables us to determine phase fractions almost independent of the flow regime. Improvement has been achieved on measurement accuracy of phase fractions.

关键词：吸收系数相位分形双重能量多相流错误校正

胃食管反流病并小肠细菌过度生长患者的临床特征及利福昔明治疗效果研究

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现代消化及介入诊疗 2024年第1期29卷 36-39,47页

作者：吴洁董魁王军乔冠恩李森武向丽邯郸市中心医院药学部 056000 邯郸市第一医院消化内一科 056000 邯郸市中心医院消化内科 056000

目的探究胃食管反流病(GERD)并小肠细菌过度生长(SIBO)患者的临床特征,并进一步探究利福昔明对此类患者治疗效果。方法统计2022年1月至2023年01月就诊于邯郸市中心医院及邯郸市第一医院的符合胃食管反流病纳入标准的患者149例,依据乳... 详细信息

目的探究胃食管反流病(GERD)并小肠细菌过度生长(SIBO)患者的临床特征,并进一步探究利福昔明对此类患者治疗效果。方法统计2022年1月至2023年01月就诊于邯郸市中心医院及邯郸市第一医院的符合胃食管反流病纳入标准的患者149例,依据乳果糖氢-甲烷呼气试验(LHBT)结果,将其分为GERD合并SIBO组(GERD-P组)与不合并SIBO组(GERD-N组)。比较两组在一般资料(性别、年龄、体重指数BMI)与临床资料(不典型症状、食管外症状、并发症、内镜下表现、GERDQ评分、RDQ评分、GERD-HRQL评分)方面的区别。随后将GERD-P组随机分为治疗组(给予艾普拉唑10 mg qd联合利福昔明0.2 g tid治疗4周)和对照组(单独给予艾普拉唑10 mg qd治疗4周),通过临床资料评价利福昔明治疗效果。结果GERD-P组与GERD-N组相比,两组性别比例、年龄无差异(P>0.05),GERD-P组的BMI,不典型症状、食管外症状及并发症比例,内镜下表现严重程度,GERDQ评分,RDQ评分,GERD-HRQL评分均高于GERD-N组,有统计学意义(P0.05),治疗组在不典型症状、食管外症状、内镜下表现缓解情况及GERDQ评分、RDQ评分、GERD-HRQL评分方面均优于对照组,有统计学意义(P<0.05)。结论高BMI的GERD患者更容易合并SIBO,GERD合并SIBO患者的临床症状及相关量表评分均较GERD不合并SIBO患者严重。对合并SIBO的GERD患者,艾普拉唑联合利福昔明治疗临床效果优于单独艾普拉唑治疗效果。

关键词：胃食管反流病小肠细菌过度生长利福昔明疗效

Oligonucleotide chip, real-time PCR and sequencing for genotyping of hepatitis B virus

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World Journal of Gastroenterology 2007年第31期13卷 4260-4263页

作者： Yong-Zhong Wang Guo-xiang wu li-Bo Luo Min Chen li-Hua Ruan Research Center for liver diseases The ThirdHospital of Changzhou Changzhou 213001 Jiangsu ProvinceChina

To compare the oligonucleotide chip, real-time PCR and sequencing for genotyping of hepatitis B virus in Chinese patients with chronic hepatitis B. METHODS： Mixture of samples with different genotypes and clinical serum samples from 126 chronic hepatitis B patients was tested for hepatitis B virus genotypes by oligonucleotide chip, real-time PCR and sequencing of PCR products, respectively. Clinical performances, time required and costs of the three assays were evaluated. RESULTS： Oligonucleotide chips and real-time PCR detected 1% and 0.1% genotypes, respectively, in mixed samples. Of the 126 clinical samples from patients with chronic hepatitis B, genotype B was detected in 41 （33%）, 41 （33%） and 45 （36%） samples, and genotype C in 76 （60%）, 76 （60%） and 81 （64%） samples, by oligonucleotide chip, real-time PCR and sequencing, respectively. Oligonucleotide chip and real-time PCR detected mixed genotypes B and C in 9 samples. Real- time PCR was the rapidest and cheapest among the three assays. CONCLUSION： Oligonucleotide chip and real-time PCR are able to detect mixed genotypes, while sequencing only detects the dominant genotype in clinical samples.

关键词： Hepatitis B virus Genotypes Oligonucleotidechips Real-time PCR Sequencing

互叶白千层及其混交林主要害虫群落多样性及发生动态

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西南农业学报 2024年第7期37卷 1545-1552页

作者：赵鹏飞余玉珠李艳枝郭萍花育宁吴香丽常明山广西壮族自治区林业科学研究院广西林业有害生物天敌繁育工程技术研究中心南宁530002 广西国有钦廉林场广西钦州535099

[目的]明确广西互叶白千层(Melaleuca leucadendron)纯林及其与桉树(Eucalyptus)和罗汉松(Podocarpus macrophyllus)混交林的主要害虫群落多样性、分布情况和发生动态,为互叶白千层种植及绿色防控提供依据。[方法]于2023年调查广西钦州... 详细信息

[目的]明确广西互叶白千层(Melaleuca leucadendron)纯林及其与桉树(Eucalyptus)和罗汉松(Podocarpus macrophyllus)混交林的主要害虫群落多样性、分布情况和发生动态,为互叶白千层种植及绿色防控提供依据。[方法]于2023年调查广西钦州的互叶白千层种植区,以路线踏查和标准地调查为主,定点监测、定期调查和室内饲养观察为辅,对广西互叶白千层及其混交林的主要害虫种类、多样性及发生动态进行研究。[结果]广西互叶白千层主要害虫种类有22科28种,分别隶属于半翅目、鳞翅目、鞘翅目、直翅目、革翅目、缨翅目,其中以鳞翅目和半翅目害虫数量最多。互叶白千层×桉树混交林发现害虫数量较多,对叶片为害较为严重的有眼纹广翅蜡蝉(Euricania ocellus)、桉重尾夜蛾(Bombotelia sp.)、桉小卷叶蛾(Strepsicrates coriariae)、小用克尺蛾(Jankowskia fuscaria)和桃粉蚜(Hyalopterus arundimis),桉重尾夜蛾在3种林分中的为害最严重,互叶白千层×罗汉松混交林发现害虫种类最多,纯林的害虫多样性在三者中最低;2种混交林分中互叶白千层×罗汉松混交林的虫害发生动态更稳定,受害程度更小。不同林分类型林间害虫的多度指数和Chao1指数均有差异,互叶白千层×桉树混交林的害虫多度指数和Chao1指数高于另外2种林分。不同林分的桉重尾夜蛾和桉小卷叶蛾的发生动态均有差异,互叶白千层×桉树混交林中的桉重尾夜蛾最早爆发,纯林中桉小卷叶蛾较早爆发。[结论]互叶白千层不同林分混交有助于改善林间虫害发生和多样性,3种林分中互叶白千层×罗汉松混交林可减少主要虫害发生。

关键词：互叶白千层害虫种类分布

Cobalt doping amount determines dominant reactive species in peroxymonosulfate activation via porous carbon catalysts co-doped by cobalt and nitrogen

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Journal of Environmental Sciences 2024年第4期138卷 212-226页

作者： xiang li limeng wu Aiqin Zhang Shaohua wu Yan lin Chunping Yang Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China Academy of Environmental and Resource Sciences School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaoming 525000China College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control(Hunan University)Ministry of EducationChangsha 410082China

Switching the reaction routes in peroxymonosulfate(PMS)-based advanced oxidation processes have attracted much attention but remain ***,a series of Co-N/C catalysts with different compositions and structures were prepared by using bimetallic zeolitic imidazolate frameworks based on ZIF-8 and ZIF-67(x Zn/Co-ZIFs).Results show that Co doping amount could mediate the transformation of the activation pathway of PMS over CoN/*** Co doping amount was less than 10%,the constructed x Co-N/C/PMS system(x≤10%)was singlet oxygen-dominated reaction;however further increasing Co doping amount would lead to the generation and coexistence of sulfate radicals and high-valent cobalt,besides singlet ***,the nitrogen-coordinated Co(Co-NX)sites could serve as main catalytically active sites to generate singlet *** excess Co doping amount caused the formation of Co nanoparticles from which leached Co ions were responsible for the generation of sulfate radicals and high-valent *** to undoped N/C,Co doping could significantly enhance the catalytic *** 0.5%Co-N/C could achieve the optimum degradation(0.488 min^(-1))and mineralization abilities(78.4%)of sulfamethoxazole among the investigated Co-N/C catalysts,which was superior to most of previously reported *** addition,the application prospects of the two systems in different environmental scenarios(pH,inorganic anions and natural organic matter)were assessed and showed different degradation *** study provides a strategy to regulate the reactive species in PMS-based advanced oxidation process.

关键词： Peroxymonosulfate Sulfate radical Singlet oxygen Cobalt Zeolitic imidazolate framework Advanced oxidation process

Combinatorial optimization of perovskite-based ferroelectric ceramics for energy storage applications

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Journal of Advanced Ceramics 2024年第7期13卷 877-910页

作者： Suwei Dai Mengyang li Xiaowen wu Yunyi wu xiang li Yanan Hao Bingcheng Luo Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of Geosciences BeijingBeijing 100083China College of Science China Agricultural UniversityBeijing 100083China Research Center for Comprehensive Energy Technology CTG Science and Technology Research InstituteBeijing 100038China School of Energy and Power Engineering Beihang UniversityBeijing 100191China State Key Laboratory of Information Photonics and Optical Communications&School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China

With the increasing impacts of climate change and resource depletion,dielectric capacitors,with their exceptional stability,fast charging and discharging rates,and ability to operate under more extreme conditions,are emerging as promising high-demand candidates for high-performance energy storage devices,distinguishing them from traditional electrochemical capacitors and ***,due to the shortcomings of various dielectric ceramics(e.g.,paraelectrics(PEs),ferroelectrics(FEs),and antiferroelectrics(AFEs)),their low polarizability,low breakdown strength(BDS),and large hysteresis loss limit their standalone use in the advancement of energy storage ***,synthesizing novel perovskite-based materials that exhibit high energy density,high energy efficiency,and low loss is crucial for achieving superior energy storage *** this review,we outline the recent development of perovskitebased ferroelectric energy storage ceramics from the perspective of combinatorial optimization for tailoring ferroelectric hysteresis loops and comprehensively discuss the properties arising from the different combinations of *** also provide future guidelines in this ***,the combinatorial optimization strategy in this review will open up a practical route toward the application of new high-performance ferroelectric energy storage devices.

关键词： perovskite hysteresis loop relaxor ferroelectric(RFE) paraelectric(PE) antiferroelectric(AFE) energy storage

Effect of short neuropeptide F signaling on larval feeding in Mythimna separata

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Insect Science 2024年第2期31卷 417-434页

作者： Mei-Mei li Qi Yang li-Hui Chen Yan-Ying li Jun-xiang wu xiang-li Xu State Key Laboratory of Crop Stress Biology in Arid Areas College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi ProvinceChinaand School of Agricultural Sciences Jiangxi Agricultural UniversityNanchangChina

Mythimna separata is a notorious phytophagous pest which poses serious threats to cereal crops owing to the gluttony of the *** short neuropeptide F(sNPF)and its receptor sNPFR are involved in a diversity of physiological functions,especially in functions related to feeding in insects,it is a molecular target for pest ***,an sNPF and 2 sNPFRs were identified and cloned from *** analysis revealed that the sNPF and its receptors had a highly conserved RLRFamide C-terminus and 7 transmembrane domains,*** sNPF and its receptor genes were distributed across larval periods and tissues,but 2 receptors had distinct expression *** starvation-induced assay elucidated that sNPF and sNPFR expression levels were downregulated under food deprivation and recovered with subsequent *** interference knockdown of sNPF,sNPFR1,and sNPFR2 by injection of double-stranded RNA into larvae not only suppressed food consumption and increased body size and weight,but also led to decrease of glycogen and total lipid contents,and increase of trehalose compared with double-stranded green fluorescent protein ***,molecular docking was performed on the interaction mode between sNPFR protein and its ligand sNPF based on the 3-dimensional models constructed by AlphaFold;the results indicated that both receptors were presumably activated by the mature peptide *** results revealed that sNPF signaling played a considerably vital role in the feeding regulation of *** and represents a potential control target for this pest.

关键词： feeding regulation Mythimna separata pest control target RNA interference short neuropeptide F sNPF receptors

Dual-ion carrier storage through Mg^(2+) addition for high-energy and long-life zinc-ion hybrid capacitor

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International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 179-185页

作者： Junjie Zhang xiang wu School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China

Cation additives can efficiently enhance the total electrochemical capabilities of zinc-ion hybrid capacitors (ZHCs).However their energy storage mechanisms in zinc-based systems are still under ***,we modulate the electrolyte and achieve dual-ion storage by adding magnesium *** we assemble several Zn//activated carbon devices with different electrolyte concentrations and investigate their electrochemical reaction dynamic *** zinc-ion capacitor with Mg^(2+)mixed solution delivers 82 mAh·g^(-1)capacity at 1 A·g^(-1) and maintains 91%of the original capacitance after 10000 *** is superior to the other assembled zinc-ion devices in single-component *** finding demonstrates that the double-ion storage mechanism enables the superior rate performance and long cycle lifetime of ZHCs.

关键词： zinc-ion hybrid capacitor MgSO_(4) electrolyte rate performance storage mechanism

The role of proteasomes in tumorigenesis

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Genes & Diseases 2024年第4期11卷 155-169页

作者： xiangyi Zhou Ruqing Xu Yue wu li Zhou Tingxiu xiang Department of Oncology The First Affliated Hospital of Chongqing Medical UniversityChongqing 400016China Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment Chongqing University Cancer HospitalChongqing 400030China

Protein homeostasis is the basis of normal life activities,and the proteasomefamily plays an extremely important function in this *** proteasome 2os is a concentric circle structure with twoαrings and twoβrings *** proteasome 2os can perform both ATP-dependent and non-ATP-dependent ubiquitination proteasome degradation by binding to various subunits(such as 19S,11S,and 200 PA),which is performed by its active subunitβ1,β2,andβ*** proteasome can degrade misfolded,excess proteins tomaintain *** the same time,it can be utilized by tumors to degrade over-proliferate and unwanted proteins to support their *** can affect the development of tumors from several aspects including tumor signaling pathways such as NF-kB and p53,cell cycle,immune regulation,and drug ***-encoding genes have been found to be overexpressed in a variety of tumors,providing a potential novel target for cancer *** addition,proteasome inhibitors such as bortezomib,carfilzomib,and ixazomib have been put into clinical application as the first-line treatment of multiple *** and more studies have shown that it also has different therapeutic effects in other tumors such as hepatocellular carcinoma,non-small cell lung cancer,glioblastoma,and ***,proteasome inhibitors are not much effective due to their tolerance and singleness in other ***,further studies on their mechanisms of action and drug interactions are needed to investigate their therapeutic potential.

关键词： Bortezomib Cancer therapy Immunoproteasome Multiplemyeloma Proteasome 20S Proteasome inhibitor Thymoproteasom