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Experimental realization of honeycomb borophene

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Science Bulletin 2018年第5期63卷 282-286页

作者： Wenbin Li Longjuan Kong Caiyun Chen Jian gou Shaoxiang Sheng Weifeng Zhang Hui Li lan Chen Peng Cheng Kehui Wu Institute of Physics Chinese Academy of Sciences Beijing 100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China School of Physics and Electronics Henan University Kaifeng 475004 China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Collaborative Innovation Center of Quantum Matter Beijing 100871 China

We report the successful preparation of a purely honeycomb,graphene-like borophene,by using an Al(11 1) surface as the substrate and molecular beam epitaxy(MBE) growth in ultrahigh *** tunneling microscopy(STM) images reveal perfect monolayer borophene with planar,non-buckled honeycomb lattice similar as *** calculations show that the honeycomb borophene on Al(1 1 1) is energetically ***,nearly one electron charge is transferred to each boron atom from the Al(1 1 1) substrate and stabilizes the honeycomb borophene structure,in contrast to the negligible charge transfer in case of borophene/Ag(1 1 1).The existence of honeycomb 2 D allotrope is important to the basic understanding of boron chemistry,and it also provides an ideal platform for fabricating boron-based materials with intriguing electronic properties such as Dirac states.

关键词： Borophene Honeycomb structure2 D materials

Programming an efficient technique for designing smart C-doped MIC with dual self-protection forinformation and high-energy

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Rare Metals 2024年第12期43卷 6694-6703页

作者： Xiao-Gang Guo tao-tao Liang Hui-Sheng Huang Bin-Fang Yuan Fu-lan Zhang Yi-Huang Chen Lu Liu Xun Cui Chongqing Key Laboratory of Inorganie Special Functional Materials College of Chemistry and Chemical Engineering Yangtze Normal University Department of Orthopedic Surgery Chongqing Sports Medicine CenterSouthwest HospitalThe Third Military Medical University College of Chemistry and Materials Engineering Wenzhou University Institute of Sustainability for Chemicals Energy and Environment (ISCE2)Agency for ScienceTechnology and Research State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University

Constructing self-protected metastable intermolecular composites（MICs） enables the regulation of microstructures towards boosting controllable detonation performance,and also prevents information leakage,which is meaningful but ***,a convenient and efficient method of combining highly-controlled electrophoretic assembly,surface modification and microwave heat treatment was employed to design promising heattriggered wettability switchable high-energy smart C-doped Al/Cr2O3MIC,and surface modification mechanism was proposed,*** anti-wetting ability of the product was demonstrated by a series of tests of water contact angle,impact resistance,immersion,selfcleaning,*** key information recording/encryption procedures were realized by constructing a hydrophilic/hydrophobic interface and adjusting the wettability of the *** addition,the output heat of asobtained smart MIC can reach ～1.5 kJ·g-1,and its attenuation rate was only ～30% even after underwater aging,further verifying its potential ***,our design provides a promising strategy for engineering smart MIC with diversified functional structures for blasting applications and beyond.

关键词： Exothermicity Stability High-energy MIC Information self-protection

Severe hematuria due to vesical varices in a patient with portal hypertension:A case report

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World Journal of Clinical Cases 2021年第18期9卷 4810-4816页

作者： Zong-Jie Wei Xin Zhu Hai-tao Yu Zong-Jian Liang Xin gou Yong Chen Department of Urology The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China

BACKGROUND Hematuria is one of the most common clinical symptoms for urologists and is typically observed in urinary system tumors,prostate hyperplasia,and urinary stone *** due to vesical varices is very rare,and only a few cases have been reported since *** report the first case of vesical varices due to portal hypertension with aberrant development and functioning of the genitourinary system along with the complete diagnosis and treatment *** SUMMARY This patient was a 53-year-old man with a history of aberrant development of the genitourinary system and hepatitis B-associated *** was admitted to the emergency department with severe hematuria and bladder clot *** abnormally dilated blood vessels were found surrounding the bladder in the pelvis by color Doppler ultrasound,contrast-enhanced computed tomography,and three-dimensional visualization *** was difficult to perform transurethral cystoscopy and hemostasis in this patient,so we performed open surgical bladder exploration for hemostasis and surgical devascularization around the *** Urologists should improve the understanding of the pathophysiology,clinical manifestations,diagnosis,and treatment of vesical *** case may be presented as a reference for the diagnosis and management of severe hematuria due to vesical varices.

关键词： Vesical varices Portal hypertension Three-dimensional visualization technology Case report

类风湿关节炎寒湿痹阻证患者的临床特征与相关因素分析

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中国实验方剂学杂志 2025年第3期31卷 140-146页

作者：陈艳宇李彦奇刘龙晓张刘波兰天仪张楠肖诚徐愿陶庆文北京中医药大学北京100029 中日友好医院北京100029

目的:探索类风湿关节炎(RA)寒湿痹阻证的临床特征以及相关影响因素。方法:收集2022年8月至2024年6月就诊于中日友好医院中医风湿病科门诊或病房的RA患者资料,收集相关人口学信息、临床资料、实验室指标、中医症状信息,进行证候判别,分... 详细信息

目的:探索类风湿关节炎(RA)寒湿痹阻证的临床特征以及相关影响因素。方法:收集2022年8月至2024年6月就诊于中日友好医院中医风湿病科门诊或病房的RA患者资料,收集相关人口学信息、临床资料、实验室指标、中医症状信息,进行证候判别,分析寒湿痹阻证的特征及相关因素。结果:本研究共纳入258例RA患者,其中寒湿痹阻证88例(34.1%)、湿热痹阻证53例(20.5%)、风湿痹阻证31例(12.0%)、肝肾不足证29例(11.2%)、气血两虚证19例(7.4%)、痰瘀痹阻证14例(5.4%)、瘀血阻络证15例(5.8%)、气阴两虚证9例(3.5%),将上述病例分为寒湿痹阻证组与其他证型组。与RA其他证型组比较,RA寒湿痹阻证组患者在关节发热、28关节压痛数(TJC28)、28关节疾病活动度(DAS28)-C反应蛋白(CRP)方面低于RA其他证型组,在中枢敏化、关节作冷、畏风恶寒、肢冷不温、脘腹胀闷方面高于其他证型组(P<0.05);通过二元Logistic回归分析显示,中枢敏化[比值比(OR)5.749,95%置信区间(95%CI)2.116~15.616,P<0.001]、DAS28-CRP(OR 0.600,95%CI 0.418~0.862,P=0.006)是RA寒湿痹阻证的独立影响因素。结论:寒湿痹阻证是RA的常见证型,与中枢敏化、关节作冷、脘腹胀闷等因素相关,可能是与中枢敏化相关的一种临床表型。

关键词：类风湿关节炎寒湿痹阻证临床特征中枢敏化

Symmetry Breaking and Reversible Hydrogenation of Two-Dimensional Semiconductor Sn2Bi

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Chinese Physics Letters 2020年第6期37卷 70-73页

作者： Xuguang Wang Bingyu Xia Jian gou Peng Cheng Yong Xu lan Chen Kehui Wu Institute of Physics Chinese Academy of Sciences Beijing 100190China School of Physics University of Chinese Academy of Sciences Beijing 100049China Department of Physics Tsinghua University Beijing 100084China Collaborative Innovation Center of Quantum Matter Beijing 100871China

The hydrogenation of two-dimensional(2D)systems can efficiently modify the physical and chemical properties of *** we report a systematic study on the hydrogenation of 2D semiconductor Sn2Bi on Si(111)by scanning tunneling microscopy experiments and first principle *** unique butterfly-like and trench-like features were observed for single H adsorption sites and hydrogen-saturated surfaces respectively,from which the bridge-site adsorption geometry can be unambiguously *** structural model was further confirmed by the theoretical calculations,which is in good agreement with the experimental *** addition,the hydrogenation is found to vanish the flat band of Sn2Bi and increase the band gap obviously.

关键词： materials. Si(111) hydrogenation

页岩储层剪切滑移粗糙缝内支撑剂铺置实验研究

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油气藏评价与开发 2025年第1期15卷 131-141页

作者：张涛陈洪丽王琨苟浩然张一凡唐堂周航宇左恒愽西南石油大学石油与天然气工程学院四川成都610500 中国石油长庆油田分公司第七采油厂陕西西安710001

在裂缝剪切滑移和壁面粗糙形态影响下,缝内流体流动通道不均匀,压裂液携砂运移铺置规律更加复杂。选用龙马溪组取心劈裂获得的岩石裂缝面,通过拉伸、叠加、雕刻等手段获得粗糙裂缝平板,构建了单面粗糙支撑剂输送平板裂缝实验装置。采用... 详细信息

在裂缝剪切滑移和壁面粗糙形态影响下,缝内流体流动通道不均匀,压裂液携砂运移铺置规律更加复杂。选用龙马溪组取心劈裂获得的岩石裂缝面,通过拉伸、叠加、雕刻等手段获得粗糙裂缝平板,构建了单面粗糙支撑剂输送平板裂缝实验装置。采用砂堤形态半定量和固液两相流定量测试方法,开展了非均匀流动通道粗糙缝内不同粗糙度、排量、黏度、粒径条件下的支撑剂输送实验,并对不同粗糙度条件下的裂缝近井带区域进行了PIV(粒子图像测速)/PTV(粒子跟踪测速)技术测试。结果表明:粗糙缝内流动通道不均匀,支撑剂铺置形态受优势通道影响,呈现不规整的凹型结构;流体和支撑剂流经大凸起结构附近时,会改变原来运动方向朝优势通道流动,同时支撑剂运动方向也受到堆积的砂堤形态影响;排量是降低优势通道影响的主控因素,降低排量易对优势通道实现有效封堵;不同黏度、粒径条件下,优势通道影响依然存在,黏度和粒径主要影响支撑剂的输送距离和堆积方式,黏度增大或粒径减小会造成支撑剂输送距离增大,砂堤以“层叠式”堆积。

关键词：粗糙缝剪切滑移支撑剂输送砂堤形态 PIV技术 PTV技术

Tough Double Metal-ion Cross-linked Elastomers with Temperature-adaptable Self-healing and Luminescence Properties

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Chinese Journal of Polymer Science 2021年第5期39卷 554-565,I0005页

作者： Qi-Yan Yin Cheng-Hao Dai Huan Chen Kai gou Hong-Zhou Guan Peng-Han Wang Jing-tao Jiang Geng-Sheng Weng School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China Ningbo Key Laboratory of Specialty Polymers State Key Laboratory Base of Novel Functional Materials and Preparation ScienceNingbo UniversityNingbo 315211China

Smart materials with a combination of tough solid-like properties,fast self-healing and optical responsiveness are of interests for the development of new soft machines and wearable *** this work,tough physically cross-linked elastomers that show high mechanical strength,intriguing temperature-adaptable self-healing and fluorochromic response properties are designed using aluminum(Al)and fluorescent europium(Eu)ions as *** ionic Al-COOH binding is incorporated to construct the strong polymer network which mainly contributes to the mechanical robustness of the elastomer consisting of two interpenetrated *** Eu-iminodiacetate(IDA)coordination is mainly used to build the weaker but more dynamic network which dominate the elasticity,self-healing and luminescence of the *** Eu^(3+) and Al^(3+) contents give these supramolecular elastomers high *** temperature-sensitive Eu-IDA coordination enables tunable self-healing rate and efficiency along with fast Eu-centered"ON/OFF"switchable red *** mechanical,self-healing and luminescence properties of these elastomers can be adjusted by tuning the ratio of the two types of metal *** elastomer is potentially applicable for biosensors,wearable optoelectronics and anticounterfeiting materials.

关键词： Elastomer Tough Self-healing Luminescence Temperature-sensitive

Separation of hafnium from zirconium in hydrochloric acid solution with di(2-ethylhexyl)phosphoric acid by solvent extraction

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Nuclear Science and Techniques 2019年第2期30卷 53-59页

作者： tao Yang Guo-Xin Sun Yuan Qian Ji-Fei Ma Yu-lan Li School of Chemistry and Chemical Engineering University of Jinan Shanghai Institute of Applied Physics Chinese Academy of Sciences

The preparation of nuclear-grade zirconium and hafnium is very important for nuclear power. The separation of hafnium from zirconium in a hydrochloric acid solution by solvent extraction was investigated with di(2-ethylhexyl)phosphoric acid(D2 EHPA). The effects of hydrochloric acid concentration, extractant concentration,diluents, and temperature on the distribution coefficient of hafnium and zirconium were studied. The species extracted were ZrOA_2·2 HA and HfOA_2-2 HA. In this process, the separation factors varied with different diluents and followed the order octane > hexane > toluene > chloroform.A high separation factor value of 4.16 was obtained under the conditions of a solution containing 0.05 mol/L HCl and0.01 mol/L D2 EHPA for the separation of hafnium from zirconium. The extraction reaction was endothermic.

关键词： Zirconium Hafnium D2EHPA Solvent extraction Separation

Phenolic Profiles and Antioxidant Activity of Buckwheat (Fagopyrum esculentum Mench and Fagopyrum tartaricum L. Gaerth) Hulls, Brans and Flours

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Journal of Integrative Agriculture 2013年第9期12卷 1684-1693页

作者： LI Fu-hua YUAN Ya YANG Xiao-lan tao Shu-ying MING Jian College of Food Science Southwest University Key Laboratory of Food Processing & Technology of Chongqing Laboratory of Quality & Safety Risk Assessment for Agro-Products on Storage and Presevation Mimnistry of Agriculture

The extracts from hulls, brans and flours of Fagopyrum esculentum M6ench （FEM, three varieties） and Fagopyrum tartaricum L. Gaerth （FTG, seven varieties） were screened for free and bound phenolic content or total phenolic content （TPC）, as well as 1,1 diphenyl-2-picryl hydrazyl （DPPH） free radical scavenging activity and reducing power. Free phenolics were predominant in buckwheat hulls, brans and flours. FEM hulls extract exhibited the highest reducing power and DPPH free radical scavenging activity with the average ECs0 84.54 μg mL^-1 and IC50 11.54 μg mL^-1 respectively, FTG brans extract had the highest average TPC （24.87 mg GAE g^-1 DW）, and FEM flours extract showed the lowest TPC, reducing power and radical scavenging activity. Furthermore, the correlations among TPC, DPPH free radical scavenging activity and reducing power of all the samples were investigated. The rank correlation coefficient （rs） between reducing power and DPPH free radical scavenging activity of buckwheat hulls, between TPC and DPPH free radical scavenging activity of buckwheat flours were 0.76 and 0.79, respectively （P〈0.05）. However, there is no significant correlation between the remaining indexes of hulls and flours, as well as the ten buckwheat brans. This result indicated that some non-phenolic compounds also contributed to the total antioxidant activity in hulls, brans and flours of buckwheats. This study demonstrated that buckwheat hulls and brans, rather than flours, are good source of antioxidants.

关键词： Fagopyrum esculentum MSench Fagopyrum tartaricum L. Gaerth phenolic content antioxidative activity,buckwheat correlation analysis