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Endoscopic ultrasound features of autoimmune pancreatitis: The typical findings and chronic pancreatitis changes

World Journal of Gastroenterology 2021年第42期27卷 7376-7386页

作者： sheng-Yu Zhang Yun-Lu Feng Long Zou Xi Wu Tao Guo Qing-Wei jiang Qiang Wang Ya-Min Lai Shou-jiang tang Ai-Ming Yang Department of Gastroenterology Peking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China Division of Digestive Disease Department of MedicineUniversity of Mississippi Medical CenterJacksonMS 39216United States

BACKGROUND Few studies have fully described endoscopic ultrasound(EUS)features of newly diagnosed autoimmune pancreatitis(AIP)involving both typical findings and chronic pancreatitis(CP)*** typical EUS findings are prevalent in the diffuse type AIP but may not be as common for the focal type,and the differences between the diffuse and focal AIP need to be *** To demonstrate the EUS features of newly diagnosed AIP and the difference between diffuse and focal *** This retrospective single center study included 285 patients of newly diagnosed type 1 AIP following the international consensus diagnostic criteria,with the EUS procedures accomplished before corticosteroid *** explored the EUS features and compared the typical AIP and CP features between the diffuse and focal AIP *** Rosemont criteria were employed for CP features definition and CP change level *** For the typical AIP features,there were significantly more patients in the diffuse group with bile duct wall thickening(158 of 214 cases,73.4%vs 37 of 71 cases,52.1%,P=0.001)and peripancreatic hypoechoic margin(76 of 214 cases,35.5%vs 5 of 71 cases,7.0%,P<0.001).For the CP features,there were significantly more patients in the focal group with main pancreatic duct dilation(30 of 214 cases,14.0%vs 18 of 71 cases,25.3%,P=0.03).The cholangitis-like changes were more prevalent in the focal cases with pancreatic head *** CP change level was relatively limited for newly diagnosed AIP cases in both *** This study demonstrated the difference in the typical AIP and CP features between diffuse and focal AIP and indicated the limited CP change level in newly diagnosed AIP.

关键词： Endoscopic ultrasound Autoimmune pancreatitis Rosemont criteria Chronic pancreatitis

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Influence of sulfate on the generation of bitumen components from kerogen decomposition during catagenesis

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Petroleum Science 2021年第6期18卷 1611-1618页

作者： Jia Wu Wen Qi Fu-Jie jiang Qing-Yong Luo Chun-Lin Zhang Huan-Zhen Hu Zi Wang Qi-sheng Ma Yong-Chun tang State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geoscience China University of Petroleum(Beijing)Beijing102249China Petrochina Research Institute of Petroleum Exploration&DevelopmentdNorthwest LanzhouGansu730020China Petrochina Research Institute of Petroleum Exploration&Development Beijing100083China University of Southern California Los AngelesCA90089USA Power Environmental Energy Research Institute CovinaCA91722USA

High-quality source rocks in saline lacustrine or marine sedimentary environments often show early peak petroleum generation and enhanced hydrocarbon yields,which have conventionally been attributed to organosulfur-enhanced thermal decomposition of kero ***,there is increasing awareness that the coexisting inorganic salts,particularly sulfates,might also contribute to the acceleration of petroleum *** this study,we investigated the influence of sulfates on the thermal decomposition of kerogen sampled from the Pingliang Formation in the Ordos *** results demonstrate that the kerogen samples mixed with sulfate generate more hydrocarbons with a lower peak production temperature than their sulfate-free *** chemical analysis revealed that the presence of sulfates significantly facilitated the generation of resins and asphaltenes at temperatures below 350℃,corresponding in our simulations to the early stage of petroleum generation(Easy%R_o <1.0%).We hypothesize that sulfates can promote the fragmentation of kerogen via direct thermochemical oxidation into a complex mixture of bitumen components that consist mostly of compounds typically encountered in the classical resin and asphaltene *** findings reveal a new reaction paradigm between sulfates and organic macromolecules that could offer useful guidance in the exploration for low-maturity oils.

关键词： Sulfate Kerogen Thermal decomposition Resins and asphaltenes Redox reactions

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Relationship between postoperative complications and fibular integrity in congenital pseudarthrosis of the tibia in children

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World Journal of Pediatrics 2017年第3期13卷 261-266页

作者： Yao-Xi Liu Hai-Bo Mei Guang-Hui Zhu Rong-Guo He Kun Liu Jin tang jiang-Yan Wu Wei-Hua Ye Xin Hu Qian Tan An Yan sheng-xiang Huang Xiao-Qian Tan Ting Lei Department of Pediatric Orthopedics Hunan Children's HospitalPediatric Academy of University of South ChinaChangsha CityChangshaChina

Background:This study aimed to investigate the relationship between postoperative complications and fibular integrity in congenital pseudarthrosis of the tibia (CPT) in ***:A retrospective study was performed in 59 patients with Crawford type Ⅳ CPT who were treated with combined surgical technique from 2007 to *** patients were divided into two groups,the CPT with fibular pseudarthrosis (group A) and CPT with intact fibula groups (group B),on the basis of fibula status after the union of *** incidence rates of refracture,ankle vaigus,tibial valgus,and limb length discrepancy in the two groups were ***:In group A,14 (36.8%) cases had refracture,30 (78.9%) had ankle valgus;27 (71%) exhibited tibial valgus with an average tibial valgus of 7 (6-20),and 24 (63.2%) had limb length discrepancy with an average limb length of 1.26 cm (0.6-4.4 cm).In group B,2 (9.5%) cases had refracture,11 (52.4%) had ankle valgns,8 (42.9%) had tibial valgus with an average tibial valgus deformity of 2.9 (6-13),and 13 (61.9%) had limb length discrepancy with an average limb length of 1.48 cm (0.5-5 cm).Significant difference in refracture and ankle valgus was found between groups A and B (P<0.05).Conclusions:After the union of CPT,patients with fibular pseudarthrosis showed higher incidence of refracture and ankle valgus than those with intact *** should be paid to the presence of fibular pseudarthrosis when managing CPT.

关键词： bone lesion complication congenital pseudarthrosis of the tibia fibula status pseudarthrosis

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Grain refinement and mechanical properties of pure aluminum processed by accumulative extrusion bonding

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Transactions of Nonferrous Metals Society of china 2019年第3期29卷 437-447页

作者： xiang CHEN Guang-sheng HUANG Shuai-shuai LIU Ting-zhuang HAN Bin jiang Ai-tao tang Yun-tian ZHU Fu-sheng PAN State Key Laboratory of Mechanical Transmission College of Materials Science and Engineering Chongqing University Chongqing 400044 China National Engineering Research Center for Magnesium Alloys Chongqing University Chongqing 400044 China Department of Materials Science and Engineering North Carolina State University Raleigh NC 27695 USA

Ultrafine-grained aluminum processed by a new severe plastic deformation technique, accumulative extrusion bonding (AEB), was investigated. Microstructural characterization indicated good interfacial bonding and an average grain size of ~440 nm was obtained after six passes. Tensile testing revealed that the strength reached the maximum value of 195 MPa and the total elongation exceeded 16% after five passes. The hardness was also significantly improved and almost reached saturation after the first pass. SEM fractography of AEB-processed specimens after tensile test showed that failure mode was shear ductile fracture with elongated shallow dimples. Comparison with conventional accumulative roll bonding indicates that this new AEB technique is more effective in refining grain and improving mechanical properties of the specimens.

关键词： aluminum accumulative extrusion bonding microstructure mechanical properties strain hardening rate

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Effects of extrusion temperature on microstructure evolution and mechanical properties of heterogeneous Mg−Gd alloy laminates via accumulated extrusion bonding

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Transactions of Nonferrous Metals Society of china 2022年第7期32卷 2190-2204页

作者： Shuai-shuai LIU Han LIU Bao-xuan ZHANG Guang-sheng HUANG xiang CHEN Ai-tao tang Bin jiang Fu-sheng PAN State Key Laboratory of Mechanical Transmission College of Materials Science and EngineeringChongqing UniversityChongqing 400044China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China

The influence of extrusion temperature on microstructure and mechanical properties of heterogeneous Mg−1Gd/Mg−13Gd laminate prepared by accumulated extrusion bonding was *** results reveal that the Mg−1Gd/Mg−13Gd laminate forms a significant difference in grain size between the successive layers when extruded at 330℃,and this difference gradually disappears as the extrusion temperature increases from 380 to 430℃.Besides,the growth rate of recrystallized grains in fine-grained layers is faster than that in coarse-grained ***,the diffusion ability of Gd element increases with elevating extrusion temperatures,promoting the increase and coarsening of precipitates in fine-grained *** tests indicate that the sample extruded at 380℃ has a superior combination of strength and *** is mainly attributed to the synergy of the heterogeneous texture between coarse and fine-grained layers,hetero-deformation induced strengthening and *** fine-grained layers facilitate the activation of prismaticáañslips,while coarse-grained layers make it easier to active basaláañand pyramidalác+añslips,especially for the sample extruded at 380℃.The activation of pyramidalác+añslips contributes to coordinating further plastic deformation.

关键词： Mg−Gd alloys heterogeneous structure texture mechanical properties slip modes

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Characterization of inthomycin biosynthetic gene cluster revealing new insights into carboxamide formation

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Chinese Journal of Natural Medicines 2020年第9期18卷 677-683页

作者： WANG Yong-jiang WANG Li HE Xin XU Dong-Dong tang Jun MA Ya-Tuan YAN Yi-Jun GU Yu-Cheng YANG Jing HUANG sheng-Xiong State Key Laboratory of Phytochemistry and P/ant Resources in West china and CAS Center for Excellence in Molecular Plant SciencesKunming Institute of BotanyChinese Academy of SciencesKunming 650201.China College of Chemistry and Pharmacy Norhwest Agriculture and Forestry UniversityYangling 712100.China Savaid Medical School University of Chinese Academy of ScienrcesBejing 100049.China Syngenta Jelott's Hill International Research Centre BracknellBerkshire RG426EYU.K.

Inthomycins are polyketide antibiotics which contain a terminal carboxamide group and a triene chain. Inthomycin B(1) and its two new analogues 2 and 3 were isolated from the crude extract of Streptomyces pactum L8. Identification of the gene cluster for inthomycin biosynthesis as well as the ^(15)N-labeled glycine incorporation into inthomycins are described. Combined with the gene deletion of the rare P450 domain in the NRPS module, a formation mechanism of carboxamide moiety in inthomycins was proposed via an oxidative release of the assembly chain assisted by the P450 domain.

关键词： Inthomycins Biosynthesis Gene cluster Carboxamide P450

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Submucosal tunneling endoscopic resection: An effective and safe therapy for upper gastrointestinal submucosal tumors originating from the muscularis propria layer

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World Journal of Gastroenterology 2019年第2期25卷 245-257页

作者： Chen Du Ning-Li Chai En-Qiang Ling-Hu Zhen-Juan Li Long-Song Li Jia-Le Zou Lei jiang Zhong-sheng Lu jiang-Yun Meng Ping tang Department of Gastroenterology and Hepatology Chinese PLA General Hospital

AIM To evaluate the effectiveness and safety of submucosal tunneling endoscopic resection(STER) and compare its outcomes in esophageal and cardial submucosal tumors(SMTs) of the muscularis propria(MP) *** From May 2012 to November 2017, 173 consecutive patients with upper gastrointestinal(GI) SMTs of the MP layer underwent STER. Overall, 165 patients were included, and 8 were excluded. The baseline characteristics of the patients and SMTs were recorded. The en bloc resection rate, complete resection rate,residual rate, and recurrence rate were calculated to evaluate the effectiveness of STER, and the complication rate was recorded to evaluate its safety. Effectiveness and safety outcomes were compared between esophageal and cardial *** One hundred and twelve men and 53 women with a mean age of 46.9 ± 10.8 years were included. The mean tumor size was 22.6 ± 13.6 mm. Eleven SMTs were located in the upper esophagus(6.7%), 49 in the middle esophagus(29.7%), 46 in the lower esophagus(27.9%), and 59 in the cardia(35.7%). Irregular lesions accounted for 48.5% of all lesions. STER achieved an en bloc resection rate of78.7%(128/165) for GI SMTs with an overall complication rate of 21.2%(35/165).All complications resolved without intervention or were treated conservatively without the need for surgery. The en bloc resection rates of esophageal and cardial SMTs were 81.1%(86/106) and 72.1%(42/59), respectively(P = 0.142), and the complication rates were 19.8%(21/106) and 23.7%(14/59), respectively,(P =0.555). The most common complications for esophageal SMTs were gas-related complications and fever, while mucosal injury was the most common for cardial *** STER is an effective and safe therapy for GI SMTs of the MP layer. Its effectiveness and safety are comparable between SMTs of the esophagus and cardia.

关键词： Endoscopic resection Submucosal tunnel Submucosal tumor Muscularis propria layer Esophagus Cardia

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Comparison on Adsorptive Separation of n-Paraffins Based on Binderless and Binder-containing Zeolite 5A Pellets

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china Petroleum Processing & Petrochemical Technology 2019年第4期21卷 21-28页

作者： Kong Ruiqi jiang Hao Wang Dan Tan Jialun Ren Danni Sun Hui Shen Benxian Liu Jichang tang sheng Zhao Deyin Chang Xiaohu Petroleum Processing Research Center East China University of Science and TechnologyShanghai 200237 International Joint Research Center of Green Energy Chemical Engineering East China University of Science and TechnologyShanghai 200237 Sinopec Northwest Oilfield Branch Urumqi 830011

Binderless zeolite is considered to be a potential alternative for binder-containing zeolite in the industrial applications of adsorptive separation process. Synthesized binderless zeolite and commercial binder-containing product were used in adsorptive separation of n-paraffins from a model oil, with their performance compared. It is indicated that the binderless zeolite exhibits by 25%-35% higher in saturated adsorption capacity and by 115%-130% more adsorption amount at the breakthrough point with much shorter length of mass-transfer zone. Adsorptive separation of n-paraffins from naphtha was carried out in a fixed-bed adsorber containing the synthesized binderless zeolite 5 A under the operating conditions covering a feed space velocity of 90 h-1 and an adsorption temperature of 573 K. As compared to original naphtha, the raffinate shows by 34 units more in research octane number and by around 10% more of potential aromatic content, while the desorption oil exhibits by 13.3% more ethylene yield and by 11.7% higher in total olefins yield.

关键词： binderless zeolite 5A adsorptive separation n-paraffins naphtha

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辣椒细胞核雄性不育材料GMS702AB的鉴定

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植物遗传资源学报 2024年第4期25卷 612-621页

作者：汪胜贾利唐菁李浩宇宋婷婷袁娟伟严从生方凌张其安孙玉军江海坤孙学良张涛安徽科技学院农学院凤阳233100 安徽省农业科学院园艺研究所/园艺作物种质资源创制及高效栽培安徽省重点实验室/农业农村部园艺作物种质创制与利用重点实验室(部省共建) 合肥230031 安徽农业大学园艺学院合肥230036

本研究发现1个具有雄性不育与单性结实特征的细胞核雄性不育系辣椒材料,并对该材料的农艺性状、单性结实坐果率、不同发育时期的不育系单性结实与可育系单性结实内源激素进行测定;利用田间鉴定和显微镜镜检,分析了F2群体的遗传分离情况... 详细信息

本研究发现1个具有雄性不育与单性结实特征的细胞核雄性不育系辣椒材料,并对该材料的农艺性状、单性结实坐果率、不同发育时期的不育系单性结实与可育系单性结实内源激素进行测定;利用田间鉴定和显微镜镜检,分析了F2群体的遗传分离情况,并利用辣椒细胞核雄性不育基因ms-3、msw、ms、msms、msc-1开发的分子标记,分析了群体的育性分离比。结果表明:不育系单性结实果实纵横径较大,可育系与不育系单性结实坐果率明显不同,可育系坐果率为22%,不育系坐果率为43%;不同时期不育系单性结实果实的赤霉素(GA4)含量显著高于可育系单性结实果实;田间鉴定和分子标记检测表明,F2群体中可育系有97株,不育系有30株,分离比为3.23∶1,符合孟德尔遗传规律,确定其育性由隐性单基因控制,将该辣椒细胞核雄性不育系命名为GMS702AB。本研究提供新的辣椒不育系,有助于辣椒育种和种子生产。

关键词：辣椒雄性不育分子标记单性结实

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Tailoring AZ91 laminates for combination of strength and ductility

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Transactions of Nonferrous Metals Society of china 2021年第12期31卷 3703-3718页

作者： xiang CHEN Wei-zhang WANG Jun-lei ZHANG Guang-sheng HUANG Shuai-shuai LIU Ai-tao tang Bin jiang Fu-sheng PAN State Key Laboratory of Mechanical Transmission College of Materials Science and EngineeringChongqing UniversityChongqing 400044China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China

Three types of laminates were designed by alternately stacking AZ91 extruded sheets in different states for extrusion to improve the mechanical *** tensile tests revealed that the combination of solid-solution-treated sheets with the aging-treated sheets achieved high tensile strength and ductility,i.e.,ultimate tensile strength of~386 MPa and elongation of~19.8%,*** backscatter diffraction(EBSD)and TEM results indicated that the aging-treated layers with more nano-sized precipitates and small grain size provided high strength and reasonable ductility,while the solid-solution-treated layers with low dislocation density facilitated strain ***,the strong interface bonding between the successive layers played an important role in the enhanced ductility.

关键词： AZ91 Mg alloy solid solution treatment aging extrusion mechanical properties

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