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Recent research progress in wettability of colloidal crystals

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Science China Chemistry 2010年第2期53卷 318-326页

作者： wang JingXia ZHANG YouZhuan ZHAO TianYi song yanlin jiang lei Laboratory of New Materials Key Laboratory of Organic SolidInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

The wettability of solid surfaces has attracted extensive interest in both theoretical research and industrial applications. This paper reviews recent research progress in the fabrication and applications of the colloidal crystals with special wettability. Based on the modified equation of Wenzel and Cassie, the colloidal crystals with special wettability have been obtained by either application of the intrinsic rough structure or modification of the surface chemical composition. Some typical applications of colloidal crystals with special wettability have also been demonstrated.

关键词： colloidal crystals fabrication special wettability

Regulating surface state of WO3 nanosheets by gamma irradiation for suppressing hydrogen evolution reaction in electrochemical N2 fixation

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Nano Research 2020年第10期13卷 2784-2790页

作者： Yanqiu Du Cheng jiang Li song bin Gao Hao Gong Wei Xia lei Sheng Tao wang Jianping He College of Materials Science and Technology jiangsu Key Laboratory of Electrochemical Energy Storage Technologies Nanjing University of Aeronautics and Astronautics29 Yudao StreetNanjing 210016China

Realizing the reduction of N2 to NH3 at low temperature and pressure is always the unremitting pursuit of scientists and then electrochemical nitrogen reduction reaction offers an intriguing ***,we develop a feasible way,gamma irradiation,for constructing defective structure on the surface of WO3 nanosheets,which is clearly observed at the atomic scale by high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM).The abundant oxygen vacancies ensure WO3 nanosheets with a Faradaic efficiency of 23%at−0.3 V ***,we start from the regulation of the surface state to suppress proton availability towards hydrogen evolution reaction(HER)on the active site and thus boost the selectivity of nitrogen reduction.

关键词： nitrogen reduction reaction ammonia WO3 oxygen vacancies surface state

Laparoscopic and open splenectomy and azygoportal disconnection for portal hypertension

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World Journal of Gastroenterology 2009年第27期15卷 3421-3425页

作者： Xiao-Zhong jiang Shao-Yong Zhao Hong Luo bin Huang Chang-song wang lei Chen You-jiang Tao Department of General surgery No. 2 People's Hospital of Yibin City Yibin 644000 Sichuan Province China

AIM： To compare the outcomes of laparoscopic and open splenectomy and azygoportal devascularization for portal hypertension. METHODS： From June 2006 to March 2009, laparoscopic splenectomy and azygoportal disconnection （LSD） were performed on 28 patients with cirrhosis, bleeding due to portal hypertension, and secondary hypersplenism. success was achieved in 26 patients. Demographic, intraoperative, and postoperative variables of the patients were compared. REsuLTS： success of laparoscopic splenectomy and azygoportal disconnection was achieved in all but two patients （7.14%） who required open splenectomy and azygoportal devascularization （OSD）. The operation time was significantly longer in patients undergoing LSD than in those undergoing OSD （235 ± 36 min vs 178 ± 47 rain, P 〈 0.05）. The estimated intraoperative blood loss was much more in patients receiving OSD than in those receiving LSD （420 ± 50 mL vs 200 ± 30 mL, P 〈 0.01）. The proportion of patients undergoing laparoscopic and open splenectomy and azygoportal disconnection who received transfusion of packed red blood cells during or after the operation was 23.08% and 38.46%, respectively （P 〈 0.05）. The time of first oral intake was faster in patients after LSD than in those after OSD （1.5 ± 0.7 d vs 3.5 ± 1.6 d, P 〈 0.05）. The hospital stay of patients after LSD was shorter than that of patients after OSD （6.5 ± 2.3 d vs 11.7 ± 4.5 d, P 〈 0.05）. The pain requiring medication was less severe in patients after LSD than in those after OSD （7.69% vs 73.08%, P 〈 0.001）. The overall complication rate was lower in patients after LSD than in those after OSD （19.23% vs 42.31%, P 〈 0.05）.CONCLUSION： Laparoscopic splenectomy and azygoportal disconnection are the feasible, effective, and safe surgical procedure, and are advantageous over minimally invasive surgery for bleeding portal hypertension and hypersplenism.

关键词： Liver cirrhosis Portal hypertension Hypersplenism Laparoscopy Devascularization

Endoscopic treatment for pancreatic diseases:Needle-knife-guided cannulation via the minor papilla

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World Journal of Gastroenterology 2015年第19期21卷 5950-5960页

作者： Wei wang Biao Gong Wei-song jiang lei Liu Kouken Bielike bin Xv Yun-Lin Wu Department of Gastroenterology Ruijin Hospital North Shanghai Jiao Tong University School of Medicine Department of Digestive Endoscopy Center Ruijin Hospital Shanghai Jiao Tong University School of Medicine Department of Emergency Medicine Ruijin Hospital Shanghai Jiao Tong University School of Medicine

AIM: To determine the efficacy and safety of meticulous cannulation by ***: Three needle-knife procedures were used to facilitate cannulation in cases when standard cannulation techniques failed. A total of 104 cannulationsvia the minor papilla attempted in 74 patients at our center between January 2008 and June 2014 were retrospectively ***: Standard methods were successful in79 cannulations. Of the 25 cannulations that could not be performed by standard methods, 19 were performed by needle-knife, while 17(89.5%) were successful. Needle-knife use improved the success rate of cannulation [76.0%, 79/104 vs 92.3%,(79 +17)/104; P = 0.001]. When the 6 cases not appropriate for needle-knife cannulation were excluded, the success rate was improved further(80.6%, 79/98 vs98.0%, 96/98; P = 0.000). There were no significant differences in the rates of post-endoscopic retrograde cholangiopancreatography adverse events between the group using standard methods alone and the group using needle-knife after failure of standard methods(4.7% vs 10.5%, P = 0.301).CONCLUSION: The needle-knife procedure may be an alternative method for improving the success rate of cannulation via the minor papilla, particularly when standard cannulation has failed.

关键词： Needle-knife Minor papilla Cannulation Meticulous procedure Endoscopic retrograde cholangiopancreatography

C—F Bond Insertion into Indoles with CHBr_(2)F:An Efficient Method to Synthesize Fluorinated Quinolines and Quinolones

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Chinese Journal of Chemistry 2024年第10期42卷 1128-1132页

作者： Chao Li lei Chen Hongye wang Zixi Yan bin Lyu Weiping Lyu Changwei jiang Dehua Lu Jiaxing Li Ning Jiao song song State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityXue Yuan Rd.38Beijing 100191China

A mild and practical method for synthesizing fluorinated quinoline derivatives,which have a wide range of applications in pharmaceuticals,materials,and organic synthesis,was described through C—F bond insertion into indoles using CHBr_(2)*** simple conditions,readily availability of CHBr_(2)F,as well as the versatility of the transformations make this strategy very powerful in synthesizing 3-fluoroquinoline and *** mechanistic studies reveal that bromofluorocarbene generated in-situ under basic condition was the key intermediate.

关键词： Skeleton edit Fluorocarbene Ring expansion Quinoline Quinolone

Carrimycin inhibits coronavirus replication by decreasing the efficiency of programmed–1 ribosomal frameshifting through directly binding to the RNA pseudoknot of viral frameshift-stimulatory element

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Acta Pharmaceutica Sinica B 2024年第6期14卷 2567-2580页

作者： Hongying Li Jianrui Li Jiayu Li Hu Li Xuekai wang Jing jiang lei lei Han sun Mei Tang Biao Dong Weiqing He Shuyi Si bin Hong Yinghong Li Danqing song Zonggen Peng Yongsheng Che Jian-Dong jiang CAMS Key Laboratory of Antiviral Drug Research Institute of Medicinal BiotechnologyChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China Beijing Key Laboratory of Antimicrobial Agents Institute of Medicinal BiotechnologyChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China Key Laboratory of Biotechnology of Antibiotics the National Health and Family Planning Commission(NHFPC)Institute of Medicinal BiotechnologyChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China

The pandemic of SARS-CoV-2 worldwide with successive emerging variants urgently calls for small-molecule oral drugs with broad-spectrum antiviral ***,we show that carrimycin,a new macrolide antibiotic in the clinic and an antiviral candidate for SARS-CoV-2 in phase III trials,decreases the efficiency of programmed–1 ribosomal frameshifting of coronaviruses and thus impedes viral replication in a broad-spectrum *** binds directly to the coronaviral frameshift-stimulatory element(FSE)RNA pseudoknot,interrupting the viral protein translation switch from ORF1a to ORF1b and thereby reducing the level of the core components of the viral replication and transcription *** carrimycin with known viral replicase inhibitors yielded a synergistic inhibitory effect on *** the FSE mechanism is essential in all coronaviruses,carrimycin could be a new broad-spectrum antiviral drug for human coronaviruses by directly targeting the conserved coronaviral FSE *** finding may open a new direction in antiviral drug discovery for coronavirus variants.

关键词： Carrimycin Coronavirus Broad-spectrum antiviral activity Programmed-1 ribosomal frameshifting RNA pseudoknot Antiviral agent RNA target Synergistic inhibitory effect

In vivo biocompatibility and degradability of a Zn-Mg-Fe alloy osteosynthesis system

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Bioactive Materials 2022年第1期7卷 154-166页

作者： Xiaoxi Shao Xiang wang Fangfang Xu Taiqiang Dai Jack G.Zhou jiang Liu Kun song lei Tian bin Liu Yanpu Liu State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases Department of Oral and Maxillofacial SurgerySchool of StomatologyThe Fourth Military Medical University145 West Changle RoadXi’an710032PR China Hunan Huayao Bio Medical Technology Co. LtdHunan410600PR China Department of Mechanical Engineering and Mechanics Drexel UniversityPhiladelphiaPA19104USA State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases School of StomatologyThe Fourth Military Medical University145 West Changle RoadXi’an710032PR China The First Naval Hospital of Southern Theater Command PLAZhanjiang524009PR China

Zinc is generally considered to be one of the most promising materials to be used in biodegradable implants,and many zinc alloys have been optimized to improve implant biocompatibility,degradation,and mechanical ***,long-term degradation leads to the prolonged presence of degradation products,which risks foreign body ***,we investigated the in vivo biocompatibility and degradation of a biodegradable Zn-Mg-Fe alloy osteosynthesis system in the frontal bone,mandible,and femur in beagles for 1 *** of the routine blood,biochemical,trace element,and histological analyses of multiple organs,peripheral blood CD4/CD8a levels,and serum interleukin 2 and 4 levels showed good biocompatibility of the Zn-Mg-Fe *** content analysis revealed zinc accumulation in adjacent bone tissue,but not in the liver,kidney,and spleen,which was related to the degradation of the Zn-Mg-Fe *** alloy demonstrated a uniform slowing degradation rate in *** degradation differences in the frontal bone,mandible,and femur were *** degradation products included zinc oxide[ZnO],zinc hydroxide[Zn(OH)_(2)],hydrozincite[Zn_(5)(OH)_(6)(CO_(3))_(2)],and hopeite[Zn_(3)(PO_(4))_(2)⋅4H_(2)O].The good biocompatibility and degradation properties of the Zn-Mg-Fe alloy render it a very attractive osteosynthesis system for clinical applications.

关键词： Biodegradable Zn-Mg-Fe alloy In vivo test Fixation device Biocompatibility Degradation property

The Genetic Diversity and Phylogenetic Status of Luxi Cattle

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Agricultural Sciences in China 2006年第8期5卷 629-634页

作者： MAO Yong-jiang CHANG Hong YANG Zhang-ping XU Ming ZHANG Liu CHANG Guo-bin song Wei- tao wang Dong-lei Animal Science and Technology College Yangzhou University Yangzhou 225009 P.R.China

A total of 87 individuals of Luxi cattle from Juanchen and Liangshan counties, Shangdong Province, China, were sampled by simple random sampling in typical colony. Twenty-one blood proteins and enzymes loci were detected by polyacrylamide gel electrophoresis （PAGE） and starch gel electrophoresis （SGE）. In the meantime, the data of 7 loci of 13 cattle populations in China and other countries were collected and phylogeny relationships were studied. The results indicated that 9 out of 21 loci showed polymorphism （42.86%）; the level of genetic variation in Luxi cattle population was relatively high, the mean heterozygosity was 0.1416. The Luxi cattle have a close phylogenetic relationship with the cattle populations of east and south of Asia, and this further confirmed the fact that Luxi cattle were the cross-breed between the Bos taurus and Bos indicus in China, but it is impossible that yellow cattle contained the blood of of Bali.

关键词： Luxi cattle genetic diversity cluster analysis

Patterns of Soil ^(15)N and Total N and Their Relationships with Environmental Factors on the Qinghai-Tibetan Plateau

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Pedosphere 2014年第2期24卷 232-242页

作者： ZHOU lei song Ming-Hua wang Shao-Qiang FAN jiang-Wen LIU Ji-Yuan ZHONG Hua-Ping YU Gui-Rui GAO Lu-Peng HU Zhong-Min CHEN bin WU Wei-Xing song Ting Key Laboratory of Ecosystem Network Observation and Modelling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences University of Chinese Academy of Sciences

The patterns of soil nitrogen （N） isotope composition at large spatial and temporal scales and their relationships to environmental factors illustrate N cycle and sources of N, and are integrative indicators of the terrestrial N cycle and its response to global change. The objectives of this study were： i） to investigate the patterns of soil N content and natural abundance of 15N （δ15N） values in different ecosystem types and soil profiles on the Qinghai-Tibetan Plateau; ii） to examine the effects of climatic factors and soil characteristics on the patterns of soil N content and soil δ15N values; and iii） to test the relationship between soil δ15N values and soil C/N ratios across ecosystems and soil profiles. Soil profiles were sampled at 51 sites along two transects 1 875 km in length and 200 km apart and distributed in forest, meadow and steppe on the Qinghai-Tibetan Plateau. Each site was sampled every 10 cm from a soil depth of 0 to 40 cm and each sample was analyzed for soil N content and δ15N values. Our results indicated that soil N and 515N values （0-40 cm） in meadows were much higher than in desert steppe. Soil N decreased with soil depth for each ecosystem, while variations of soil ~15N values along soil profiles were not statistically significant among most ecosystems but for mountain meadow, lowland meadow, and temperate steppe where soil δ15N values tended to increase with soil depth. The parabolic relationship between soil δ15N values and mean annual precipitation indicated that soil δ15N values increased with increasing precipitation in desert steppe up to 500 mm, and then decreased with increasing precipitation across all other ecosystems. Moreover, the parabolic relationship between δ15N values and mean annual temperature existed in all individual ecosystem types. Soil N and δ15N values （0-0 cm） increased with an increase in soil silt and clay contents. Furthermore, a threshold of C/N ratio of about 11 divided the parabolic relationship between soi

关键词： desert steppe nitrogen isotope composition nutrient availability soil nitrogen