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A betaxanthin-based visible and fluorescent reporter for monitoring plant transformation

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The Crop Journal 2023年第2期11卷 666-671页

作者： Yuanjie Deng Aoqi Duan Tong Li Huiru Wang aisheng Xiong State Key Laboratory of Crop Genetics and Germplasm Enhancement Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East ChinaCollege of HorticultureNanjing Agricultural UniversityNanjing 210095JiangsuChina

Commonly used reporters rely on a single property,such as the fluorescence of GFP and visible color of anthocyanins,therefore these reporters hardly handle the complicated condition in *** are a group of plant natural products derived from the amino acid *** visible yellow-orange color and green fluorescence under blue light make it a promising new *** two enzymatic reactions are required to convert tyrosine into ***,we synthesized an open reading frame named Bx that contained all the betaxanthins biosynthetic genes and demonstrated its use as a powerful and efficient reporter in tobacco,carrot,and tomato.

关键词： Reporter Betaxanthins Visible Fluorescent Plant transformation

二连盆地哈达图铀矿床铀矿化特征与成矿作用探讨

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世界核地质科学 2021年第2期38卷 198-206页

作者：杜鹏飞康世虎苗爱生刘武生张锋核工业二〇八大队内蒙古包头014010 核工业二四三大队内蒙古赤峰024000 核工业北京地质研究院北京100029

哈达图铀矿床位于内蒙古二连盆地齐哈日格图凹陷北部,是近年国内北方沉积盆地中发现的又一大型砂岩型铀矿。通过研究区钻孔岩心详细观察,结合电子探针和扫描电镜分析,表明铀矿化多产于下白垩统赛汉组上段,其形态主要呈板状,矿石矿物以... 详细信息

哈达图铀矿床位于内蒙古二连盆地齐哈日格图凹陷北部,是近年国内北方沉积盆地中发现的又一大型砂岩型铀矿。通过研究区钻孔岩心详细观察,结合电子探针和扫描电镜分析,表明铀矿化多产于下白垩统赛汉组上段,其形态主要呈板状,矿石矿物以沥青铀矿为主,铀石次之。空间上,铀与黄铁矿和有机质密切相关,主要表现为吸附态和充填于裂隙、孔隙两种。结合研究区构造演化特征及年代学研究成果,探讨了哈达图矿床铀成矿作用,以期为后续矿床勘查提供依据。

关键词：二连盆地哈达图铀矿床铀矿化特征铀成矿作用

Macroscale superlubricity under ultrahigh contact pressure in the presence of layered double hydroxide nanosheets

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Nano Research 2022年第5期15卷 4700-4709页

作者： Kunpeng Wang Lei Liu aisheng Song Tianbao Ma Hongdong Wang Jianbin Luo Yuhong Liu State Key Laboratory of Tribology Tsinghua UniversityBeijing 100084China School of Mechatronic Engineering Shanghai UniversityShanghai 200444China

It is difficult to achieve macroscale superlubricity under high contact pressures and high normal *** double hydroxide(LDH)nanoadditives were introduced into an ionic liquid alcohol solution(IL(as))with contact pressures up to 1.044 GPa,which resulted in a friction coefficient(COF)of 0.004 and a robust superlubricity state lasting for 2 *** with the LDH particles(LDH-Ps)with ca.90-nm widths and 18-nm thickness,micron-scale LDH nanosheet(LDH-N)additives with ca.1.5-pm width and 6-nm thickness increased the load-bearing capacity by approximately three times during *** lubricant film thickness and the ultrathin longitudinal dimension of the LDH-N additives did not influence the continuity of the fluid film on the contact *** improvements resulted from the protective adsorption layer and ion distribution formed on the contact interface,as revealed by detailed surface analyses and simulation *** particular,the sliding energy barrier and Bader charge calculation revealed that weak shear sliding between the nanosheet and the solid surface formed easily and the anions in the liquid adsorbed on the solid surface exhibited electrostatic repulsion forces,which generated stable tribological properties *** research provides a novel method for obtaining macroscale superlubricity for practical industrial applications.

关键词： macroscale superlubricity layered double hydroxide(LDH)nanosheets ionic liquid high pressure heterostructure

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二连盆地巴彦乌拉矿床辫状河砂体赋矿规律

湖南科技大学学报（自然科学版） 2016年第2期31卷 19-24页

作者：戴明建何万双彭云彪苗爱生杨建新申科峰刘璐中国地质大学(武汉)资源学院湖北武汉430074 核工业二〇八大队内蒙古包头014010 中国人民解放军66259部队内蒙古呼和浩特010051

以河流沉积学、高分辨率层序地层学和水成铀矿理论为指导,充分利用钻孔岩心和测井资料,对巴彦乌拉矿床下白垩统赛汉组上段(K_1s^2)辫状河相铀储层进行了沉积微相精细研究,深入分析了受基准面旋回控制的辫状河砂体在垂向上和横向上的分... 详细信息

以河流沉积学、高分辨率层序地层学和水成铀矿理论为指导,充分利用钻孔岩心和测井资料,对巴彦乌拉矿床下白垩统赛汉组上段(K_1s^2)辫状河相铀储层进行了沉积微相精细研究,深入分析了受基准面旋回控制的辫状河砂体在垂向上和横向上的分布规律与成因特征,总结了巴彦乌拉矿床辫状河砂体的赋矿规律,并建立了心滩坝砂体赋矿模式.研究认为该矿床的矿体主要赋存于低可容纳空间下形成的具有一定规模的心滩坝砂体内部,以及辫状河道与心滩坝交汇处,可为该矿床外围找矿,以及相似古河谷型铀矿找矿提供借鉴意义.

关键词：辫状河高分辨率层序赋矿规律巴彦乌拉赛汉组

二连盆地哈达图铀矿床关键控矿要素与成矿模式研究

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铀矿地质 2021年第4期37卷 584-592页

作者：吕永华康世虎刘武生苗爱生杜鹏飞核工业二〇八大队内蒙古包头014010 核工业北京地质研究院北京100029

通过对哈达图铀矿床矿体特征的研究,认为该矿床为赛汉组上段建造间古河谷砂岩型铀矿床,其矿床成因属于“渗入与渗出叠加型”,铀矿化具有“预富集—富集—迁移—再富集”的滚动富集特征,矿体的形成主要受铀源、构造反转、岩性-岩相、氧... 详细信息

通过对哈达图铀矿床矿体特征的研究,认为该矿床为赛汉组上段建造间古河谷砂岩型铀矿床,其矿床成因属于“渗入与渗出叠加型”,铀矿化具有“预富集—富集—迁移—再富集”的滚动富集特征,矿体的形成主要受铀源、构造反转、岩性-岩相、氧化带发育程度和还原残留体等关键要素控制,在分析这些关键控矿要素的基础之上,初步总结了哈达图铀矿床成矿模式。

关键词：哈达图铀矿床赛汉组上段关键控矿要素成矿模式

Intermittent failure mechanism and stabilization of microscale electrical contact

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Friction 2023年第4期11卷 538-545页

作者： Tianbao MA Zhiwei YU aisheng SONG Jiahao ZHAO Haibo ZHANG Hongliang LU Dandan HAN Xueyan WANG Wenzhong WANG State Key Laboratory of Tribology Tsinghua UniversityBeijing 100084China Inspur Beijing Electronic Information Industry Co. Ltd.Beijing 100085China Department of Precision Instrument Tsinghua UniversityBeijing 100084China Innovation Center for Future Chips Beijing 100084China State Key Laboratory of Precision Measurement Technology and Instruments Beijing 100084China School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Institute of Physics Chinese Academy of SciencesBeijing 100190China

The stability and lifetime of electrical contact pose a major challenge to the performance of microelectro-mechanical systems(MEMS),such as MEMS *** microscopic failure mechanism of electrical contact still remains largely *** conductive atomic force microscopy with hot switching mode was adopted to simulate the asperity-level contact condition in a MEMS *** variation and fluctuation of current and adhesion force were observed during 10,000 repetitive cycles,exhibiting an“intermittent failure”*** fluctuation of electrical contact properties was attributed to insulative carbonaceous contaminants repetitively formed and removed at the contact spot,corresponding to degradation and reestablishment of electrical *** contaminant film was formed,the contact interface became“metal/carbonaceous adsorbates/metal”instead of direct metal/metal contact,leading to degradation of the electrical contact ***,a system of iridium/graphene on ruthenium(Ir/GrRu)was proposed to avoid direct metal/metal contact,which stabilized the current fluctuation and decreased interfacial adhesion *** existence of graphene enabled less adsorption of carbonaceous contaminants in ambient air and enhanced mechanical protection against the repetitive hot switching *** work opens an avenue for design and fabrication of microscale electrical contact system,especially by utilizing two-dimensional materials.

关键词： atomic force microscopy microscale electrical contact graphene

纳岭沟铀矿床局部隔水层成因识别与三维地质建模

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重庆科技学院学报（自然科学版） 2015年第4期17卷 6-9页

作者：戴明建彭云彪苗爱生刘璐陈法正申科峰中国地质大学(武汉) 武汉430074 核工业208大队内蒙古包头014010

鄂尔多斯盆地纳岭沟铀矿床局部隔水层主要有2类,即沉积作用形成的泥粉质局部隔水层和成岩作用形成的钙质局部隔水层。为了达到局部隔水层的最佳识别效果,采用多曲线加权视电阻率曲线重构技术进行岩心标定。综合研究局部隔水层及矿体的... 详细信息

鄂尔多斯盆地纳岭沟铀矿床局部隔水层主要有2类,即沉积作用形成的泥粉质局部隔水层和成岩作用形成的钙质局部隔水层。为了达到局部隔水层的最佳识别效果,采用多曲线加权视电阻率曲线重构技术进行岩心标定。综合研究局部隔水层及矿体的发育规律,以局部隔水层及矿体的空间特征作为约束条件,建立局部隔水层与矿体三维可视化模型。

关键词：鄂尔多斯盆地局部隔水层曲线重构实体模型

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茵陈五苓散加减治疗2型糖尿病临床研究

新中医 2024年第11期56卷 7-11页

作者：李思韵蔡宏桂张珏李清吴雯静魏爱生广州中医药大学第八临床医学院广东佛山528000 佛山市中医院内分泌科广东佛山528000

目的:观察茵陈五苓散加减治疗脾虚痰湿型2型糖尿病(T2DM)的临床疗效。方法:选取27例T2DM患者,按照完全随机的方法分为二甲双胍组(A组)、茵陈五苓散加减组(B组)及二甲双胍联合茵陈五苓散加减组(C组)各9例。治疗28 d后,比较3组治疗前后空... 详细信息

目的:观察茵陈五苓散加减治疗脾虚痰湿型2型糖尿病(T2DM)的临床疗效。方法:选取27例T2DM患者,按照完全随机的方法分为二甲双胍组(A组)、茵陈五苓散加减组(B组)及二甲双胍联合茵陈五苓散加减组(C组)各9例。治疗28 d后,比较3组治疗前后空腹血糖(FBG)水平、胃肠道不良反应评分,并分别采集其治疗前后的粪便样本,利用PacBio测序平台对粪便标本进行高通量测序,比较3组菌群丰度。结果:治疗后,3组FBG水平均降低(P0.05)。治疗后,A组胃肠道不良反应评分升高(P0.05),且A组高于B组、C组(P0.05),B组及C组上述菌群丰度均升高(P>0.05),但3组间比较,差异无统计学意义(P>0.05)。结论:茵陈五苓散加减能降低FBG,调节肠道菌群失调,增加有益菌的菌群丰度并保护胃肠道。

关键词： 2型糖尿病茵陈五苓散空腹血糖肠道菌群短链脂肪酸

Facile preparation of compact LTA molecular sieve membranes on polyethyleneimine modified substrates

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Chinese Chemical Letters 2021年第3期32卷 1086-1088页

作者： Fangge Chen Yanhong Li aisheng Huang Shanghai Key Laboratory of Green Chemistry and Chemical Processes Department of ChemistryEast China Normal UniversityShanghai 200241China

A facile preparation strategy was proposed for preparation of compact zeolite LTA membranes on polyethyleneimine(PEI)modified substrates without *** the functionalization of substrates by using PEI,compact LTA membranes can be formed on various kinds of substrates.A well-intergrown and phase-pure LTA membrane with a thickness of about 3.0μm is successfully prepared on the a-Al_(2)O_(3)disk after crystallization for 24 h at 60℃.Besides LTA membrane,wellintergrown zeolite FAU membranes can also be formed on PEI-modified a-Al_(2)O_(3)substrates,suggesting the universality of this *** zeolite LTA membranes synthesized on PEI-modified a-Al_(2)O_(3)tubes were evaluated for the separation of alcohols/water mixture through *** as-synthesized zeolite LTA membranes display high pervaporation *** the separation of 10 wt%isopropanol/water solution at 90℃,a high separation factor of44991 and a water flux of 1.73 kg m^(-2)h^(-1)are achieved.

关键词： Zeolite LTA membrane Polyethyleneimine modification Covalent modification Alcohols/water separation Membrane separation