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Biological sources, paleoenvironment, and organic matter enrichment in source rocks of the Ordovician Majiagou Formation, Ordos Basin, China:Evidence from biomarkers,microfossils, and inorganic geochemical analyses

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Journal of Palaeogeography 2024年第1期13卷 92-115页

作者： Jing-Jing Cao wen-Zhe Gang shang-Ru Yang State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Bejing)Beijing 102249China College of Geosciences China University of Petroleum(Bejing)Beijing 102249China Oil and Gas Technology Research Institute PetroChina Changqing Oifield CompanyXi'an 710018Shaanxi ProvinceChina

Carbonate deposits in the Ordovivian Majiagou Formation are significant source rocks for natural gas generation in the Ordos Basin, northwestern China. Previous studies mainly focused on the organic matter enrichment mechanism of shales rather than carbonate rocks. The biological sources and paleoenvironment of carbonate source rocks, and the main controlling factors of organic matter enrichment in the carbonate source rocks were studied in this paper in combination with evidence from biomarkers, microfossils and inorganic geochemistry analysis. The results show that four types of microfacies were identified in the Majiagou Formation, respectively as: mud flat microfacies, mud-dolomite flat microfacies, dolomite flat microfacies, and open marine microfacies. The biological sources of organic matter are chiefly planktonic algae, followed by bacteria. The mud flat and mud-dolomite flat contain a high abundance of terrigenous detrital inputs, as indicated by the high content of Al_(2)O_(3), TiO_(2), Th, and Zr. The low Sr/Cu and high Rb/Sr values reveal warm and humid paleoclimate conditions in the mud flat and mud-dolomite flat, whereas the dolomite flat and open marine were likely formed in hot and arid paleoclimate conditions. The mud flat and mud-dolomite flat deposits were characterized by high paleoproductivity of the Majiagou Formation. Low Sr/Ba values were found in the mud flat samples, indicating fresh to brackish water condition, whereas samples of other facies have a relatively high degree of salinity. Based on U_(auth), Mo_(auth), Cr_(auth), Co_(auth), δCe, and δEu values, the mud flat microfacies was formed in a suboxic and anoxic environment, whereas the mud-dolomite flat, dolomite flat and open marine microfacies were within dysoxic to oxic conditions. A model of organic matter enrichment in the Majiagou Formation is thus established. The level of terrigenous detrital inputs is the principal factor of organic matter enrichment in the Majiagou Formation,

关键词： Biological source Microfacies Trace elements Organic matter Majiagou Formation Ordos Basin

低温下环丙酸酰胺调控棉花内源激素促进噻苯隆脱叶的机制

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作物学报 2024年第1期50卷 187-198页

作者：孙尚文束红梅杨长琴张国伟王晓婧孟亚利王友华刘瑞显南京农业大学农学院江苏南京210095 江苏省农业科学院经济作物研究所/农业农村部长江下游棉花与油菜重点实验室江苏南京210014

脱叶催熟是棉花机械采收的前提,但遇低温可导致噻苯隆(TDZ)脱叶效果下降,不能满足机械化采收的要求,本实验室发现环丙酸酰胺(CYC)可显著提高低温下TDZ的脱叶效果,但CYC促进低温下棉花化学脱叶的机制尚不清楚。为此,以中棉425品种为材料... 详细信息

脱叶催熟是棉花机械采收的前提,但遇低温可导致噻苯隆(TDZ)脱叶效果下降,不能满足机械化采收的要求,本实验室发现环丙酸酰胺(CYC)可显著提高低温下TDZ的脱叶效果,但CYC促进低温下棉花化学脱叶的机制尚不清楚。为此,以中棉425品种为材料,设置2个温度水平(25℃和15℃),清水(CK)、TDZ单剂(T)和TDZ+CYC复配(TC)3种处理方式,分析棉叶脱落过程中离层中内源激素含量变化及相关基因的表达情况。结果表明:低温(15℃)下处理后240 h,T处理棉花脱叶率仅为53.0%,但TC处理的棉叶脱落开始时间较T处理提前24 h且脱落率升高至79.6%。低温下,相较于T处理,TC处理棉叶离层生长素(IAA)运输相关基因(LAX2、PIN1)、IAA响应基因(IAA9、ARF3)表达量显著下降,离层中IAA含量降低;离层乙烯(ET)合成基因(ACS、ACO)表达量升高,ET合成前体ACC含量增加,ET下游信号基因(ERF1B)显著上调表达;茉莉酸(JA)合成相关基因(AOC4)上调表达,离层中JA含量增加。综上,低温下CYC和TDZ复配抑制棉叶离层中IAA运输与信号传导,促进ET、JA合成与ET信号转导,是CYC提高低温下TDZ脱叶效果的主要原因。

关键词：棉花脱叶低温噻苯隆环丙酸酰胺内源激素含量基因表达

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Synthesis of Large Pore Molecular Sieve VPI-5 by Using Various Organic Amines

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Chemical Research in Chinese Universities 1993年第1期9卷 1-5页

作者： YAO shang-qing, TIAN wen-tong, QIU Shi-lun and PANG wen-qin (Department of Chemistry, Jilin University, Changchun, 130023)

The molecular sieve VPI-5 was synthesized by using various organic amines (DEA, Di-PA, DBA, DPenA, TBA, DEOA and TEOA) as the structure-directing agent. The use of DPA enlarged the range of the crystallization temperature from 110℃ to 190℃ in the synthesis of VPI-5, while the use of TEOA changed the composition of the reactants in a broad variety. Diamines are the typical amines in the synthesis of VPI-5. Among them DBA and DPA are the most favorite structure-directing agents for the synthesis of VPI-5 molecular sieve.

关键词： VPI-5 Molecular sieve Amines

Gastric syphilis mimicking gastric cancer: A case report

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World Journal of Clinical Cases 2021年第26期9卷 7798-7804页

作者： Yan-Mei Lan shang-wen Yang Mu-Gen Dai Bin Ye Fei-Yun He Department of Gastroenterology The Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000Zhejiang ProvinceChina Department of Gastroenterology Lishui Chinese Medicine HospitalLishui 323000Zhejiang ProvinceChina

BACKGROUND The nonspecific clinical,radiological and pathological characteristics of gastric syphilis can establish it as an imitator of other gastric *** absence of primary or secondary lubricating lesions should not prevent consideration of gastric *** SUMMARY A 63-year-old female patient presented to the hospital with dull pain in the middle and upper abdomen without apparent cause for one week,which was aggravated for two *** patient had been sexually active with the same male partner for the past years,but her partner was *** contrastenhanced computed tomography(CT)and positron emission tomography/CT suggested gastric *** gastroscopy revealed an antral gastric ulcer with gastric retention,and also suggested gastric *** no cancer cells were found in the biopsies taken during the two *** pallidum(***)antibodies:ELISA positive,rapid plasma reagin titer 1:*** and eosin(HE)stain showed macrophage infiltration in the lamina *** spirochetes were observed by immunohistochemical staining using a monoclonal antibody against *** patient was finally diagnosed with gastric *** Only a few cases of gastric syphilis have been misdiagnosed as gastric *** can relieve symptoms of gastric syphilis.

关键词： Syphilis gastritis Misdiagnosis Gastric cancer Endoscopy Case report

Quantitative relationship between surface sedimentary diatoms and water depth in North-Central Bohai Bay,China

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China Geology 2023年第1期6卷 61-69页

作者： Zhi-wen shang Jian-fen Li Holger Freund Pei-xin Shi Hong Wang Tianjin Centre China Geological SurveyMinistry of Natural ResourcesTianjin 300170China Key Laboratory of Coast Geo-environment China Geological SurveyMinistry of Natural ResourcesTianjin 300170China Institute of Chemistry and Biology of the Marine Environment Carl von Ossietzky University of OldenburgOldenburg 26111Germany

To study the quantitative relationship between surface sedimentary diatoms and water depth,67 surface samples were collected for diatom analysis on eight profiles with water depth variation from the muddy intertidal zone to the shallow sea area in North-Central Bohai Bay,*** results showed that the distribution of diatoms changed significantly in response to the change in water ***,the quantitative relationship between the distribution of dominant diatom species,their assemblages,and the water depth was *** water depth optima for seven dominant species such as Cyclotella striata/stylorum,Paralia sulcata,and Coscinodiscus perforatus and the water depth indication range of seven diatom assemblages were obtained in the study area above the water depth(elevation)of-10 *** quantitative relationship between surface sedimentary diatoms and water depth provides a proxy index for diatom-paleo-water depth reconstruction in the strata in Bohai Bay,China.

关键词： Diatom Surficial sediments Water depth(elevation) Quantitative relationship Sea level change Paleo-environment change Marine geological survey engineering North-central Bohai Bay China

Resolvin D1 Induces mTOR-independent and ATG5-dependent Autophagy in BV-2 Microglial Cells

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Current Medical Science 2023年第6期43卷 1096-1106页

作者： shang-wen PAN Li-sha HU Han WANG Rui-ting LI Ya-jun HE You shang Zhong-liang DAI Li-xin CHEN Wei XIONG Department of Critical Care Medicine Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China Department of Anesthesiology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China Department of Anesthesiology Qingdao Women and Children’s HospitalQingdao UniversityQingdao266034China Department of Anesthesiology The Second Clinical Medical College(Shenzhen People’s Hospital)Jinan UniversityShenzhen518020China Department of Pharmacology Medical CollegeJinan UniversityGuangzhou510632China Integrated Chinese and Western Medicine Postdoctoral Research Station Jinan UniversityGuangzhou510632China

Objective The activation state of microglia is known to occupy a central position in the pathophysiological process of cerebral *** is a catabolic process responsible for maintaining cellular *** recent years,autophagy has been demonstrated to play an important role in *** D1(RvD1)is a promising therapeutic mediator that has been shown to exert substantial anti-inflammatory and proresolving ***,whether RvD1-mediated resolution of inflammation in microglia is related to autophagy regulation needs further *** present study aimed to explore the effect of RvD1 on microglial autophagy and its corresponding *** Mouse microglial cells(BV-2)were cultured,treated with RvD1,and examined by Western blotting,confocal immunofluorescence microscopy,transmission electron microscopy,and flow *** RvD1 promoted autophagy in both BV-2 cells and mouse primary microglia by favoring the maturation of autophagosomes and their fusion with ***,RvD1 had no significant effect on the activation of mammalian target of rapamycin(mTOR)***,RvD1-induced mTOR-independent autophagy was confirmed by observing reduced cytoplasmic calcium levels and suppressed calcium/calmodulin-dependent protein kinase II(CaMK II)***,by downregulating ATG5,the increased phagocytic activity induced by RvD1 was demonstrated to be tightly controlled by ATG5-dependent *** The present work identified a previously unreported mechanism responsible for the role of RvD1 in microglial autophagy,highlighting its therapeutic potential against neuroinflammation.

关键词： resolvin D1 microglia mTOR-independent autophagy ATG5-dependent autophagy phagocytosis

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基于多层感知机的ATM英文凭单识别

信息技术 2024年第5期48卷 144-148,154页

作者：王文尚高凡侯冰莹王林琳冯佑华中师范大学物理科学与技术学院武汉430079

文中提出一种面向英文ATM凭单的新型图像嵌入模板的处理思路,并结合机器学习进行OCR识别。首先将待识别的英文ATM凭单切割为单行图片,将此单行图片嵌入到自定义矩形模板,并将获得的单个字符图像制作成ATM凭单数据集。为了更好地识别上... 详细信息

文中提出一种面向英文ATM凭单的新型图像嵌入模板的处理思路,并结合机器学习进行OCR识别。首先将待识别的英文ATM凭单切割为单行图片,将此单行图片嵌入到自定义矩形模板,并将获得的单个字符图像制作成ATM凭单数据集。为了更好地识别上述处理的ATM凭单,文中采用多层感知机进行训练。经过大量实验以及对比研究,英文ATM凭单的单个字符识别准确率达到98.87%,单行识别准确率也达到了98%。

关键词： ATM凭单 OCR识别图像嵌入自定义矩形模板多层感知机

Overview of point-of-care ultrasound in diagnosing intestinal obstruction

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World Journal of Emergency Medicine 2022年第2期13卷 135-140页

作者： Rui-ting Li Yue Zhao Xiao-jing Zou Hua-qing Shu Ting Zhou shang-wen Pan Xue-hui Gao Hai-yan Huang Hong Liu You shang Department of Critical Care Medicine Institute of Anesthesia and Critical Care MedicineUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Critical Care Medicine Jin Yin-tan HospitalWuhan 430048China

Intestinal obstruction(IO),which refers to a partial or complete blockage of the intestine,is an emergency gastrointestinal disorder commonly seen in the intensive care unit(ICU)and emergency department and associated with high morbidity and mortality.[1,2]Common etiologies of IO include adhesions,hernias,intussusception,foreign bodies,ischemia,tumors,*** in the diagnosis and management of IO is associated with higher mortality due to complications such as bowel necrosis,perforation,sepsis,and septic shock.[3]IO can be divided into small bowel obstruction(SBO)and colonic obstruction(CO).In SBO,74%of cases are caused by adhesions,which may respond to conservative *** is critical to identify which of those cases may progress and require emergent surgical intervention with the help of the diagnostic and assessment *** contrast to SBO,most cases of CO demand *** this instance,appropriate assessment tools are required to define the location of the obstruction,which will assist in the proper surgical procedure.[4]

关键词： intestine diagnosis ischemia

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钢网壳结构工程安装监测技术应用与应力分析

智能建筑与智慧城市 2024年第1期 167-169页

作者：陈尚文赵增超蔡吴和曾强强中能建建筑集团有限公司中电投工程研究检测评定中心有限公司

文章以南浔国际会展中心宴会厅钢网壳工程为例,阐述了钢网壳工程安装阶段结构健康监测的施工方案,并对监测应力数据进行分析。结果显示,根据项目实际情况进行科学布点监测,对于常规钢网壳施工具有良好的指导和预警效果;同时以底部-中部... 详细信息

文章以南浔国际会展中心宴会厅钢网壳工程为例,阐述了钢网壳工程安装阶段结构健康监测的施工方案,并对监测应力数据进行分析。结果显示,根据项目实际情况进行科学布点监测,对于常规钢网壳施工具有良好的指导和预警效果;同时以底部-中部-顶部三区顺序分层设立支撑并安装的施工方案具有充分的安全性与可借鉴性。

关键词：钢网壳结构健康监测应力分析

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