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Adsorption and Insecticidal Activity of Toxin from Bacillus thuringiensis on Rectorite

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Pedosphere 2007年第4期17卷 513-521页

作者： ZHOU Xue-Yong HUANG Qiao-yun CAI peng yu Zi-niu Hubei Province Key Laboratory of Refractories and Ceramics Wuhan University of Science and Technology Wuhan 430081 （China）. College of Biotechnology and Chemical Engineering Tianjin University of Technology Tianjin 300191 （China） State Key Laboratory of Agricultural Microbiology College of Resources and Environment Huazhong Agricultural Uni- versity Wuhan 430070 （China）

The adsorption and desorption of the toxin from Bacillus thuringiensis strain WG-001 on rectorite were studied at different toxin and/or rectorite concentrations, pH values and temperatures. The insecticidal activity of the adsorbed toxin was evaluated by determining the lethal concentration to kill 50% of the larvae of Heliothis armigera （LC50）. The adsorption of the toxin on rectorite in sodium carbonate buffer （pH 9） reached equilibrium within 0.5-1.0 h and the adsorption isotherm of the toxin followed the Langmuir equation （R^2 〉 0.99）. In the pH range from 9 to 11 （carbonate buffer）, the adsorbed toxin decreased with increasing pH. The adsorption amounts decreased with increasing rectorite：toxin ratio. The adsorption was not significantly affected by the temperature between 10 and 50 ℃. The X- ray diffraction analysis indicated occurrence of the intercalation of the rectorite by the toxin. The infrared absorption spectrum showed that the binding of the toxin did not alter its structure. The LC50 wlues of the adsorbed toxin were smaller than those of the free toxin. The rectorite protected the toxin from ultraviolet irradiation damage. The desorption of the adsorbed toxin in water ranged from 37.5% to 56.4% and from 27.4% to 41.8% in a carbonate buffer. The desorption percentage also decreased with increasing rectorite：toxin ratio.

关键词： Bacillus thuringiensis insecticidul uctivity rectorite toxin udsorption und desorption

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密度聚类划分时间段的动态热度路网构建

计算机工程与设计 2017年第11期38卷 3023-3028,3130页

作者：周宇鹏牛保宁太原理工大学计算机科学与技术学院山西太原030024

为减少构建路网计算量,快速获取交汇口,提出停留点扩展法。分析停留点空间分布特性,仅根据停留点的相关性进行扩展,减少轨迹点遍历,实现交汇口的快速获取。为准确将静态热度路网转化为动态热度路网,提出密度聚类划分时间段法。对轨迹点... 详细信息

为减少构建路网计算量,快速获取交汇口,提出停留点扩展法。分析停留点空间分布特性,仅根据停留点的相关性进行扩展,减少轨迹点遍历,实现交汇口的快速获取。为准确将静态热度路网转化为动态热度路网,提出密度聚类划分时间段法。对轨迹点使用密度聚类,计算聚类结果中各个时间段的热度,作为边的动态热度,实现动态热度路网构建。实验结果表明,停留点扩展法能够减少计算量,快速获取交汇口;密度聚类划分时间段法可以根据不同时段轨迹点密度变化合理划分时间段,实现动态热度路网构建。

关键词：交汇口停留点扩展密度聚类划分时间段动态热度路网

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双J/ψ质量谱中的第三个峰结构

Science Bulletin 2023年第8期68卷 800-803,M0003页

作者：牛鹏宇张振宇王倩杜孟林 Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Southern Nuclear Science Computing CenterSouth China Normal UniversityGuangzhou 510006China School of Physics University of Electronic Science and Technology of ChinaChengdu 611731China

强相互作用是自然界中四种基本相互作用之一,其色禁闭性质决定实验上能直接观测到的粒子都是色单态的强子.因此,研究强子的结构和性质是理解强子化的最重要的途径之一.近些年,国内外各大高能实验发现了大量超出传统夸克模型的奇特强子... 详细信息

强相互作用是自然界中四种基本相互作用之一,其色禁闭性质决定实验上能直接观测到的粒子都是色单态的强子.因此,研究强子的结构和性质是理解强子化的最重要的途径之一.近些年,国内外各大高能实验发现了大量超出传统夸克模型的奇特强子态候选者,这为研究强子形成的动力学机制提供了独特的环境.2020年欧洲核子中心的LHCb合作组在J/ψJ/ψ不变质量谱中发现两个峰值结构.两年后,CMS和ATLAS合作组分别在J/ψJ/ψ和J/ψψ’不变质量谱中7.2 GeV附近发现第三个峰结构.本文研究表明ηc(2S)ηc(2S)对第三个峰结构至关重要.由于散射矩阵的幺正性,J/ψJ/ψ不变质量谱中7.2 GeV处的峰结构与同能量处不变质量谱中的低谷结构同时存在.文章建议实验在7.2 GeV能量处同时细致扫描J/ψJ/ψ和J/ψψ’的不变量质量谱.这为确定全粲四夸克态的性质提供了独特的线索.

关键词：强相互作用夸克模型强子散射矩阵动力学机制候选者质量谱基本相互作用

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： peng Li Meifeng Cai Shengjun Miao yuan Li yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang Feng Gao yu-Gui peng peng Wu Zong-Lin Li Xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

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用层切法反求牙冠面

上海交通大学学报 2003年第1期37卷 37-39,43页

作者：闫贺庆尚鹏于力牛王成焘上海交通大学机械与动力工程学院上海200030

采用 CT、核磁共振等断层扫描方法对牙齿进行反求时 ,受到硬件技术的限制 ,难以得到足够的轮廓数据 .故先对牙齿实物进行塑料模型、层切模型的制作 ,对层切模型进行铣削 ,并取得每层断面的图像 .将所得图像转换为数字形式 ,并将结果与... 详细信息

采用 CT、核磁共振等断层扫描方法对牙齿进行反求时 ,受到硬件技术的限制 ,难以得到足够的轮廓数据 .故先对牙齿实物进行塑料模型、层切模型的制作 ,对层切模型进行铣削 ,并取得每层断面的图像 .将所得图像转换为数字形式 ,并将结果与牙体其他部分的 CT数据拟合 ,得到了牙齿的整体的数据 .依据所得的整体数据得到牙齿的曲面和实体造型 ,在曲面和实体造型的基础上 ,进行了造型快速原型实体复制和有限元分析等工作。

关键词：牙冠He面层切法三维实体建模反求工程塑料模型层切模型牙体修复

榆林地区农村居民的食品安全卫生及护理需求调查研究

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食品安全质量检测学报 2016年第11期7卷 4701-4706页

作者：侯延丽王鹏牛育鸿延安大学西安创新学院西安710100

目的提高农村地区居民食品安全卫生意识,满足居民的护理需求,保障居民饮食安全和身心健康。方法以榆林地区的50个家庭作为调查对象,采用问卷调查法结合访谈对居民对食品安全的认知态度、了解食品安全法规的程度、食品消费行为、关注食... 详细信息

目的提高农村地区居民食品安全卫生意识,满足居民的护理需求,保障居民饮食安全和身心健康。方法以榆林地区的50个家庭作为调查对象,采用问卷调查法结合访谈对居民对食品安全的认知态度、了解食品安全法规的程度、食品消费行为、关注食品安全卫生的程度、获取食品安全卫士知识的渠道及护理需求进行调查。结果大多数居民对食品卫生安全的认知态度较好,对相关法规的了解程度较高;农贸市场的消费人数占比较大,关注食品保质期和生产日期的人数占比较大;对食品卫生监管的满意度一般,对护理人才和护理知识需求较强。结论当地农村居民的整体食品安全卫生认识度不高,需要通过加大宣传教育力度和提高监管力度、加大护理人力投入来改善。

关键词：榆林地区农村居民食品安全卫生需求护理需求调查研究

Association between autoimmune gastritis and gastric polyps:Clinical characteristics and risk factors

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 73-87页

作者： Jing-Zheng Jin Xiao Liang Shu-peng Liu Rui-Lan Wang Qing-Wei Zhang yu-Feng Shen Xiao-Bo Li Division of Gastroenterology and Hepatology Renji HospitalShanghai Jiao Tong University School of MedicineShanghai 200127China Division of Gastroenterology and Hepatology Shanghai Institute of Digestive DiseasesShanghai 200001China Division of Gastroenterology and Hepatology Renji Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200127China Division of Gastroenterology and Hepatology Sichuan Armed Police Corps HospitalLeshan 610041Sichuan ProvinceChina Division of Gastroenterology and Hepatology NHC Key Laboratory of Digestive DiseasesRenji HospitalShanghai Jiao Tong University School of MedicineShanghai 200127China Department of Gastroenterology Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine Shanghai Institute of Digestive DiseasesShanghai 200127China

BACKGROUND The relationship between autoimmune gastritis(AIG)and gastric polyps(GPs)is not well *** To explore the clinical characteristics and risk factors of AIG with GPs in *** This double center retrospective study included 530 patients diagnosed with AIG from July 2019 to July *** collected clinical,biochemical,serological,and demographic data were of each *** regression analyses,both multivariate and univariate,were conducted to pinpoint independent risk factors for GPs in patients with AIG *** operating characteristic curves were utilized to establish the optimal cutoff values,sensitivity,and specificity of these risk factors for predicting GPs in patients with *** Patients with GPs had a higher median age than those without GPs[61(52.25-69)years vs 58(47-66)years,P=0.006].The gastrin-17 levels were significantly elevated in patients with GPs compared with those without GPs[91.9(34.2-138.9)pmol/mL vs 60.9(12.6-98.4)pmol/mL,P<0.001].Additionally,the positive rate of parietal cell antibody(PCA)antibody was higher in these patients than in those without GPs(88.6%vs 73.6%,P<0.001).Multivariate and univariate analyses revealed that PCA positivity[odds ratio(OR)=2.003,P=0.017],pepsinogen II(OR=1.053,P=0.015),and enterochromaffin like cells hyperplasia(OR=3.116,P<0.001)were significant risk factors for GPs,while pepsinogen I was identified as a protective *** PCA positivity and enterochromaffin like cells hyperplasia are significant risk factor for the development of GPs in patients with *** gastrin-17 levels may also play a role in this *** findings suggest potential targets for further research and therapeutic intervention in managing GPs in patients with AIG.

关键词： Autoimmune gastritis Gastric polyps Neuroendocrine tumor Risk factors Nomogram

Homozygous phytosterolemia and a literature review:A case report

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World Journal of Clinical Cases 2025年第10期13卷 46-52页

作者： Chun-Xin Jiang Guang Yang Lian-Ping Shi peng-yu Su Department of Cardiovascular North China University of Science and Technology Affiliated HospitalTangshan 063000Hebei ProvinceChina

BACKGROUND Phytosterolemia,also known as sitosterolemia,is a rare autosomal recessive disease characterized by elevated plasma plant sterol levels and xanthomata,which is easily misdiagnosed as familial *** with homozygous phytosterolemia often have severe clinical manifestations,with xanthomata in childhood and premature *** patient had a milder clinical *** SUMMARY This report describes a patient with homozygous phytosterolemia who presented with only elevated cholesterol and low-density lipoprotein cholesterol(LDL-C)without xanthomata,arteriosclerosis,or hematological *** mutation of ABCG5 which encodes an ATP-binding cassette transporter,was detected by whole exome sequencing and diagnosed as *** of the patient’s plasma plant sterol levels detected significant elevations in stigmasterol,rapeseed oil-derived plant sterol,andβ-glutaminol *** was started and a low plant sterol diet was *** patient’s blood lipid profile was reexamined one month later and showed significant decreases in total cholesterol and LDL-C *** has similar clinical features as familial hypercholesterolemia,is highly susceptible to misdiagnosis,and has a very low incidence,and therefore clinicians need to consider a genetic diagnosis of a definitively hyperlipidemic disorder when statin drugs fail to lower lipid *** Phytosterolemia is easily misdiagnosed as familial hypercholesterolaemia and can be treated by dietary modification and cholesterol absorption inhibitors to lower blood lipids.

关键词： Hypercholesterolemia Cholesterol Low-density lipoprotein Phytosterolemia Liquid chromatography ABCG5/ABCG8 Sitosterolemia