期刊文献+
共找到53篇文章
< 1 2 3 >
每页显示 20 50 100
2023年度交叉科学部基金项目评审工作综述
1
作者 申茜 周圣涵 +2 位作者 王斌 戴亚飞 潘庆 《中国科学基金》 CSSCI CSCD 北大核心 2024年第1期58-62,共5页
本文总结了2023年度国家自然科学基金委员会交叉科学部的项目受理、评审与资助总体情况,对各类项目申请及资助情况进行梳理,分析了申请中存在的主要共性问题,总结了具体的改革举措及实施成效,并提出下一年度工作重点和主要思路。
关键词 国家自然科学基金委员会 交叉科学部 项目评审 申请与资助情况
下载PDF
Deep learning assisted variational Hilbert quantitative phase imaging 被引量:5
2
作者 Zhuoshi Li Jiasong Sun +7 位作者 Yao Fan Yanbo Jin qian shen Maciej Trusiak Maria Cywińska Peng Gao qian Chen Chao Zuo 《Opto-Electronic Science》 2023年第4期1-11,共11页
We propose a high-accuracy artifacts-free single-frame digital holographic phase demodulation scheme for relatively lowcarrier frequency holograms-deep learning assisted variational Hilbert quantitative phase imaging(... We propose a high-accuracy artifacts-free single-frame digital holographic phase demodulation scheme for relatively lowcarrier frequency holograms-deep learning assisted variational Hilbert quantitative phase imaging(DL-VHQPI).The method,incorporating a conventional deep neural network into a complete physical model utilizing the idea of residual compensation,reliably and robustly recovers the quantitative phase information of the test objects.It can significantly alleviate spectrum-overlapping-caused phase artifacts under the slightly off-axis digital holographic system.Compared to the conventional end-to-end networks(without a physical model),the proposed method can reduce the dataset size dramatically while maintaining the imaging quality and model generalization.The DL-VHQPI is quantitatively studied by numerical simulation.The live-cell experiment is designed to demonstrate the method's practicality in biological research.The proposed idea of the deep learning-assisted physical model might be extended to diverse computational imaging techniques. 展开更多
关键词 quantitative phase imaging digital holography deep learning high-throughput imaging
下载PDF
Endoscopic Ruler for varix size measurement:A multicenter pilot study
3
作者 Yi-Fei Huang sheng-Juan Hu +29 位作者 Yang Bu Yi-Ling Li Yan-Hong Deng Jian-Ping Hu Shao-Qi Yang qian shen Mark McAlindon Rui-Chun Shi Xiao-Qin Li Tie-Ying Song Hai-Long Qi Tai-Wei Jiao Meng-Yuan Liu Fang He Jun Zhu Bin Ma Xiao-Bin Yu Jian-Yang Guo Yue-Hua Yu Hai-Jiang Yong Wen-Tun Yao Ting Ye Hua Wang Wen-Fu Dong Jian-Guo Liu qiang Wei Jing Tian Xiao-Guo Li Xavier Dray Xiao-Long Qi 《World Journal of Gastrointestinal Endoscopy》 2023年第9期564-573,共10页
BACKGROUND We invented Endoscopic Ruler,a new endoscopic device to measure the size of varices in patients with cirrhosis and portal hypertension.AIM To assess the feasibility and safety of Endoscopic Ruler,and evalua... BACKGROUND We invented Endoscopic Ruler,a new endoscopic device to measure the size of varices in patients with cirrhosis and portal hypertension.AIM To assess the feasibility and safety of Endoscopic Ruler,and evaluate the agreement on identifying large oesophageal varices(OV)between Endoscopic Ruler and the endoscopists,as well as the interobserver agreement on diagnosing large OV using Endoscopic Ruler.METHODS We prospectively and consecutively enrolled patients with cirrhosis from 11 hospitals,all of whom got esophagogastroduodenoscopy(EGD)with Endoscopic Ruler.The primary study outcome was a successful measurement of the size of varices using Endoscopic Ruler.The secondary outcomes included adverse events,operation time,the agreement of identifying large OV between the objective measurement of Endoscopic Ruler and the empirical reading of endoscopists,together with the interobserver agreement on diagnosing large OV by Endoscopic Ruler.RESULTS From November 2020 to April 2022,a total of 120 eligible patients with cirrhosis were recruited and all of them underwent EGD examinations with Endoscopic Ruler successfully without any adverse event.The median operation time of Endoscopic Ruler was 3.00 min[interquartile range(IQR):3.00 min].The kappa value between Endoscopic Ruler and the endoscopists while detecting large OV was 0.52,demonstrating a moderate agreement.The kappa value for diagnosing large OV using Endoscopic Ruler among the six independent observers was 0.77,demonstrating a substantial agreement.CONCLUSION The data demonstrates that Endoscopic Ruler is feasible and safe for measuring the size of varices in patients with cirrhosis and portal hypertension.Endoscopic Ruler is potential to promote the clinical practice of the two-grade classification system of OV. 展开更多
关键词 Oesophageal varices CIRRHOSIS Portal hypertension ESOPHAGOGASTRODUODENOSCOPY Endoscopic ruler
下载PDF
Exploring the mechanisms of lipid regulation in metabolic syndrome: Recent developments
4
作者 Gui-Jie Wang qian shen Chuan-Long Zhang 《Medical Theory and Hypothesis》 2023年第2期15-18,共4页
Metabolic syndrome(MetS)is an individual accumulation of multiple abnormal metabolic indicators,with insulin resistance and central obesity at its core.Adipose tissue is the core component of MetS,and adipokines secre... Metabolic syndrome(MetS)is an individual accumulation of multiple abnormal metabolic indicators,with insulin resistance and central obesity at its core.Adipose tissue is the core component of MetS,and adipokines secreted by various adipocytes play a crucial role in its regulatory mechanism.In this paper,we searched the literature from 2020 to 2022 on Pubmed and Knowledgeweb using the keywords of“metabolic syndrome,”“adipose tissue”and“adipokines”.We mainly explored the mechanisms of leptin,lipocalin,resistin,brown adipose tissue and beige adipose tissue secreted by white adipose tissue in regulating insulin resistance,inhibiting inflammatory response and neurohormonal regulation of lipid and glucose metabolism.In this paper,under various studies on lipids for MetS,the metabolic mechanisms of various adipose tissues,adipocytes,and adipokines were investigated systematically and retrospectively.It was found that the regulation of adipokines and,thus,treatment of MetS by drugs is less and needs further exploration. 展开更多
关键词 metabolic syndrome adipose tissue ADIPOKINES
下载PDF
数字经济背景下新业态从业人员职业发展研究——基于南京市外卖骑手调查数据的分析
5
作者 沈倩 陆琪 范镔玮 《管理科学与研究(中英文版)》 2023年第5期7-13,共7页
伴随数字经济的快速发展,以外卖骑手为代表的新业态从业人员日益陷入不稳定化的生存困境,带来了一定的社会风险。鉴于此,本研究以南京市外卖骑手为例,依托实证调查、相关性分析和对“个人职业满意度”的回归分析,总结出“发展空间”、... 伴随数字经济的快速发展,以外卖骑手为代表的新业态从业人员日益陷入不稳定化的生存困境,带来了一定的社会风险。鉴于此,本研究以南京市外卖骑手为例,依托实证调查、相关性分析和对“个人职业满意度”的回归分析,总结出“发展空间”、“社会认同”和“家庭支持度”三个正向影响因素,进一步剖析这一群体特征。整体来看,健全的法律法规、普适的劳动保障、灵活的培训方式、完善的激励性制度体系和包容的就业选择是调动骑手工作积极性,促进该职业健康持续发展的有效途径。 展开更多
关键词 数字经济 新业态从业者 职业发展状况 职业满意度
下载PDF
基于知识管理的青年学生个人知识体系的构建
6
作者 沈倩 尹秀娟 《管理科学与研究(中英文版)》 2023年第4期98-102,共5页
20世纪末,知识管理在企业界率先实践,并取得了显著成果。知识与教育有着天然的紧密关系,它是知识生产、传播、创新和应用的主要阵地,实施知识管理必将成为高校青年学生构建个人知识体系的应有之义。本研究通过对个人知识管理的文献回顾... 20世纪末,知识管理在企业界率先实践,并取得了显著成果。知识与教育有着天然的紧密关系,它是知识生产、传播、创新和应用的主要阵地,实施知识管理必将成为高校青年学生构建个人知识体系的应有之义。本研究通过对个人知识管理的文献回顾,从知识获取、知识应用、知识共享和知识创新四个层面总结梳理了当前青年学生个人知识体系构建的实然困境,并基于SECI模型进行提升路径的应然探索,以期为知识管理视角下的青年学生个人知识体系的构建提供参考意义。 展开更多
关键词 知识管理 青年学生 知识体系
下载PDF
同伴互助学习模式在ICU年轻护士专科培训中的应用研究 被引量:5
7
作者 陈月华 钱深 +2 位作者 贾秋芳 刘满春 关锐 《河南大学学报(医学版)》 CAS 2019年第3期225-228,共4页
〔目的〕探讨同伴互助学习模式在ICU年轻护士专科培训中的应用效果。〔方法〕选取某三级综合医院综合ICU和EICU工作3年以下的38名护士作为研究对象,按整群抽样法随机抽取EICU护士18名为对照组,抽取综合ICU护士20名为试验组,对照组采用... 〔目的〕探讨同伴互助学习模式在ICU年轻护士专科培训中的应用效果。〔方法〕选取某三级综合医院综合ICU和EICU工作3年以下的38名护士作为研究对象,按整群抽样法随机抽取EICU护士18名为对照组,抽取综合ICU护士20名为试验组,对照组采用常规专科护士培训方法,试验组在常规培训方法的基础上运用同伴互助学习模式,两组进行为期12 mon的培训,培训前后运用护理行为六维度(6-D)量表、理论和操作测试、医生对护士工作满意度等方面进行评价。〔结果〕试验组在理论和操作测试成绩、医生对护士工作满意度、护理行为各维度的测评分值均高于对照组,差异有统计学意义(P<0.001)。〔结论〕在常规培训基础上运用同伴互助学习模式,能提高ICU年轻护士专科培训效果,有效地实现年轻护士从理论到实践的过渡,值得临床推广。 展开更多
关键词 同伴互助学习模式 ICU 年轻护士 专科培训
下载PDF
高催化活性2D/2D Ti_(3)C_(2)/Bi_(4)O_(5)Br_(2)纳米片异质结的构建及其可见光催化去除NO 被引量:2
8
作者 杨晓庆 杨华琳 +7 位作者 卢欢 丁皓璇 童妍心 饶斐 张鑫 申茜 高健智 朱刚强 《物理化学学报》 SCIE CAS CSCD 北大核心 2021年第10期150-158,共9页
本研究采用水热法构建出2D/2D Ti_(3)C_(2)/Bi_(4)O_(5)Br_(2)纳米异质结,在可见光下研究了该复合材料对NO的光催化去除能力。实验表明,15%Ti_(3)C_(2)/Bi_(4)O_(5)Br_(2)对NO的光催化去除效率相比纯Bi_(4)O_(5)Br_(2)显著提高:其降解... 本研究采用水热法构建出2D/2D Ti_(3)C_(2)/Bi_(4)O_(5)Br_(2)纳米异质结,在可见光下研究了该复合材料对NO的光催化去除能力。实验表明,15%Ti_(3)C_(2)/Bi_(4)O_(5)Br_(2)对NO的光催化去除效率相比纯Bi_(4)O_(5)Br_(2)显著提高:其降解效率达到57.6%,比Bi_(4)O_(5)Br_(2)高27.1%。同时,15%Ti_(3)C_(2)/Bi_(4)O_(5)Br_(2)具有很好的稳定性,经过5次循环催化,其催化率依然接近50.0%。研究发现,反应过程中主要的反应活性物质是e^(−)和·O_(2)^(−),光氧化产物主要为NO_(2)^(−)和NO_(3)^(−)。分析复合材料的光催化机制,发现光催化活性的提高主要得益于2D/2D Ti_(3)C_(2)/Bi_(4)O_(5)Br_(2)异质结提高了电子与空穴的分离率,从而提高了光催化效率。这项工作提供了一个制备2D/2D纳米复合材料用于光催化降解环境污染物的有效方法,在缓解能源紧张与环境污染方面有巨大应用潜力。 展开更多
关键词 Ti_(3)C_(2)/Bi_(4)O_(5)Br_(2) 2D/2D异质结 半导体 光催化剂 光催化降解 NO去除
下载PDF
濒危植物大别山五针松枝叶NPK化学计量特征季节动态 被引量:12
9
作者 闫景明 张世航 +4 位作者 汪漫 杭伟 钱申 邱东 陶冶 《植物研究》 CAS CSCD 北大核心 2021年第3期395-407,共13页
为了解我国特有珍稀濒危植物大别山五针松(Pinus dabeshanensis)枝和叶的养分状况及其季节变化特征,连续12个月对其开展野外取样和室内分析,探讨了枝叶N、P、K含量及其化学计量比的动态变化及其在器官间的差异性。结果表明,器官和月份... 为了解我国特有珍稀濒危植物大别山五针松(Pinus dabeshanensis)枝和叶的养分状况及其季节变化特征,连续12个月对其开展野外取样和室内分析,探讨了枝叶N、P、K含量及其化学计量比的动态变化及其在器官间的差异性。结果表明,器官和月份对大别山五针松化学计量特征有显著影响,其中器官的影响最大。枝和叶化学计量特征的季节变化不规律,N∶K变异系数最大(枝叶分别为26.75%和28.00%),其余均属弱变异(变异系数<25%)。叶N、P、K平均含量(10.40、1.43及5.15 mg·g-1)显著高于枝(6.56、1.26及4.80 mg·g-1),叶N∶P(7.27)也显著高于枝(5.18),但枝和叶N∶P均远低于14,呈严重N限制。枝和叶N∶P、N∶K及P∶K分别受制于N、K和K(即相关系数最大)。枝和叶N、P和K之间(枝N-K除外)具有显著的相关性和异速生长关系,其中叶N分配速率高于枝而P分配速率低于枝。降水和温度对枝叶化学计量特征有不同影响。降水量具有明显的时间尺度效应,短时间尺度降水多影响叶而长时间尺度多影响枝。在各时间尺度下,温度均与叶P含量呈显著负相关而与枝K含量呈显著正相关。综合来看,大别山五针松枝、叶间化学计量特征差异显著,且具有明显的季节变异,在一定程度上受降水和温度的影响。 展开更多
关键词 大别山五针松 小枝 针叶 季节变化 化学计量特征 气象因子
下载PDF
不同微生境中水光温变化对毛尖紫萼藓叶绿素荧光特性的影响 被引量:7
10
作者 钱申 王志侠 +4 位作者 陈慧妹 殷美丽 左世晨 陶冶 邱东 《生态学报》 CAS CSCD 北大核心 2021年第4期1482-1491,共10页
毛尖紫萼藓(Grimmia pilifera)多生长在裸岩表面且具有多种微生境,其生长过程受到水分、光照和温度等环境因素的交互影响,但其光合生理特征如何响应这种变化的环境条件尚不清楚。开展原位(荫蔽和向阳裸岩2种微生境)和室内模拟实验,分析... 毛尖紫萼藓(Grimmia pilifera)多生长在裸岩表面且具有多种微生境,其生长过程受到水分、光照和温度等环境因素的交互影响,但其光合生理特征如何响应这种变化的环境条件尚不清楚。开展原位(荫蔽和向阳裸岩2种微生境)和室内模拟实验,分析了不同水分(模拟降水量和降水频次)、光照、温度及其复合梯度处理对毛尖紫萼藓叶绿素荧光特性的影响。原位实验结果显示荫蔽生境原位生长毛尖紫萼藓光化学效率显著高于向阳生境。在室内相同培养条件下,脱水过程中来自荫蔽生境植株有效光合效率保持时间比向阳生境明显缩短,表现出较低的脱水耐受性。水-光-温复合模拟实验显示,降水频次和光-温变化对毛尖紫萼藓光化学效率均有极显著影响且存在一定的交互作用,而降水量的影响相对较弱;弱光低温及1次/(2 d)的降水频率条件下毛尖紫萼藓具有最高的光合活性。总体来看,荫蔽生境、弱光低温条件及中等频次降水有利于毛尖紫萼藓生长,但向阳生境毛尖紫萼藓则具有更强的环境耐受性。 展开更多
关键词 毛尖紫萼藓 水分 温度 光照 交互作用 叶绿素荧光
下载PDF
Immunosuppressive terpenoids from Tripterygium wilfordii 被引量:7
11
作者 qian shen ZhiYao +2 位作者 Yoshihisa Takaishi Yan Wen Zhang Hong Quan Duan 《Chinese Chemical Letters》 SCIE CAS CSCD 2008年第4期453-456,共4页
Two new terpenes,triptobenzene P(1)and wilforone(2)were isolated from Tripterygium wilfordii,as well as 10 known terpenes.Their structures were elucidated by spectroscopic methods.Compounds 2-4,8,10,and 11 showed ... Two new terpenes,triptobenzene P(1)and wilforone(2)were isolated from Tripterygium wilfordii,as well as 10 known terpenes.Their structures were elucidated by spectroscopic methods.Compounds 2-4,8,10,and 11 showed significant immunosuppressive activities. 展开更多
关键词 Tripterygium wilfordii DITERPENE TRITERPENE Immunosuppressive activity
下载PDF
Generation and characterization of a transgenic mouse model for pancreatic cancer 被引量:3
12
作者 qiang sun Jie Feng +6 位作者 Xiao-Luan Wei Rong Zhang Su-Zhen Dong qian shen Juan Dong Hou-Da Li Ying-He Hu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2006年第17期2785-2788,共4页
AIM: To generate a SV40Tag transgenic tumor animal model and to study the mechanism underlying tumorigenesis. METHODS: A mammary gland expression vector containing SV40Tag DNA was generated. Transgene fragments were... AIM: To generate a SV40Tag transgenic tumor animal model and to study the mechanism underlying tumorigenesis. METHODS: A mammary gland expression vector containing SV40Tag DNA was generated. Transgene fragments were microinjeted into fertilized eggs of FVB mice. The genetically manipulated embryos were transferred into the oviducts of pseudo-pregnant female mice. PCR and Northern blot analysis were used for genotype analysis of F1 and F2 mice. Transgene expression was detected by RT-PCR and immunohistochemistry. RESULTS: SV40Tag gene was detected in two lines of transgenic mice. One of them delivered the transgene to F1 and a tumor was found in the pancreas of these mice. RT-PCR and immunohistochemistry showed that SV40Tag gene was expressed in the tumor. Pathological characterization of the transgenic mice demonstrated that the tumor belonged to pancreatic cystic neoplasm. CONCLUSION: SV40Tag transgenic mouse model can be successfully established. The transgenic mice develop a pancreatic tumor, which can be used for investigation of the molecular mechanism of tumorigenesis in vivo. 展开更多
关键词 SV40Tag Transgenic mice Animal model Pancreatic neoplasms
下载PDF
Transcriptional regulation of flavonoid biosynthesis in Artemisia annua by AaYABBY5 被引量:3
13
作者 Sadaf-Ilyas Kayani qian shen +5 位作者 Saeed-ur Rahman Xueqing Fu Yongpeng Li Chen Wang Danial Hassani Kexuan Tang 《Horticulture Research》 SCIE 2021年第1期3381-3395,共15页
Artemisia annua is a medicinal plant rich in terpenes and flavonoids with useful biological activities such as antioxidant,anticancer,and antimalarial activities.The transcriptional regulation of flavonoid biosynthesi... Artemisia annua is a medicinal plant rich in terpenes and flavonoids with useful biological activities such as antioxidant,anticancer,and antimalarial activities.The transcriptional regulation of flavonoid biosynthesis in A.annua has not been well-studied.In this study,we identified a YABBY family transcription factor,AaYABBY5,as a positive regulator of anthocyanin and total flavonoid contents in A.annua.AaYABBY5 was selected based on its similar expression pattern to the phenylalanine ammonia lyase(PAL),chalcone synthase(CHS),chalcone isomerase(CHI),and flavonol synthase(FLS)genes.A transient dual-luciferase assay in Nicotiana bethamiana with the AaYABBY5 effector showed a significant increase in the activity of the downstream LUC gene,with reporters AaPAL,AaCHS,AaCHI,and AaUFGT.The yeast one-hybrid system further confirmed the direct activation of these promoters by AaYABBY5.Gene expression analysis of stably transformed AaYABBY5 overexpression,AaYABBY5 antisense,and control plants revealed a significant increase in the expression of AaPAL,AaCHS,AaCHI,AaFLS,AaFSII,AaLDOX,and AaUFGT in AaYABBY5 overexpression plants.Moreover,their total flavonoid content and anthocyanin content were also found to increase.AaYABBY5 antisense plants showed a significant decrease in the expression of flavonoid biosynthetic genes,as well as a decrease in anthocyanin and total flavonoid contents.In addition,phenotypic analysis revealed deep purple-pigmented stems,an increase in the leaf lamina size,and higher trichome densities in AaYABBY5 overexpression plants.Together,these data proved that AaYABBY5 is a positive regulator of flavonoid biosynthesis in A.annua.Our study provides candidate transcription factors for the improvement of flavonoid concentrations in A.annua and can be further extended to elucidate its mechanism of regulating trichome development. 展开更多
关键词 transformed AMMONIA TRANSIENT
下载PDF
Two new terpenes from Tripterygium wilfordii 被引量:2
14
作者 Bo Le Li qian shen +1 位作者 Mei Na Jin Hong Quan Duan 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第7期827-829,共3页
Two new terpenes,wilfornine H(1) and triptobenzene Q(2) were isolated from Tripterygium wilfordii,as well as 11 terpenes. Their structures were elucidated by spectroscopic methods.Compounds 5,9-13 showed significant i... Two new terpenes,wilfornine H(1) and triptobenzene Q(2) were isolated from Tripterygium wilfordii,as well as 11 terpenes. Their structures were elucidated by spectroscopic methods.Compounds 5,9-13 showed significant immunosuppressive activities. 展开更多
关键词 Tripterygium wilfordii Sesquiterpene alkaloid DITERPENE Immunosuppressive activity
下载PDF
外源氮添加对2种豆科牧草功能性状的影响 被引量:1
15
作者 张中信 岳奇奇 +2 位作者 钱申 吴静 陶冶 《江苏农业学报》 CSCD 北大核心 2020年第5期1197-1204,共8页
以2种常见豆科牧草紫花苜蓿(Medicago sativa)和紫云英(Astragalus sinicus)为材料,设置对照、低氮和高氮(0 kg/hm^2、50 kg/hm^2、100 kg/hm^2)3个梯度的外源氮添加处理,对比研究了2种豆科植物苗期形态、生物量分配、含水量及叶片光合... 以2种常见豆科牧草紫花苜蓿(Medicago sativa)和紫云英(Astragalus sinicus)为材料,设置对照、低氮和高氮(0 kg/hm^2、50 kg/hm^2、100 kg/hm^2)3个梯度的外源氮添加处理,对比研究了2种豆科植物苗期形态、生物量分配、含水量及叶片光合色素含量等功能性状对外源氮添加的响应及性状间的权衡特征。结果表明:随施氮量增加,紫花苜蓿形态性状及含水量根冠比,紫云英光合色素特征及叶宽、株高、叶厚均有显著变化(P<0.05),但变化趋势大多不相同。2种豆科牧草形态性状总体表现为低促高抑效应,而叶绿素b和类胡萝卜素含量则表现为施氮后明显降低。相比之下,氮添加对2种豆科牧草生物量根冠比、含水量、叶绿素a及总叶绿素含量均无显著影响(P>0.05)。主成分分析结果表明,紫花苜蓿和紫云英前2个主成分所反映的功能性状协同性在种间差异较大。可见,2种豆科牧草生长和光合色素特征对外源氮添加具有明显的差异化响应,并表现出不同的协同性。 展开更多
关键词 紫花苜蓿 紫云英 功能性状 协同性
下载PDF
Diagnosis and treatment of primary pulmonary enteric adenocarcinoma:Report of Six cases 被引量:1
16
作者 Ling-Fang Tu Ling-Yan sheng +4 位作者 Jian-Ying Zhou Xue-Fen Wang Yue-Hong Wang qian shen Yi-Hong shen 《World Journal of Clinical Cases》 SCIE 2021年第30期9236-9243,共8页
BACKGROUND Primary pulmonary enteric adenocarcinoma(PEAC)is a very rare subtype of invasive adenocarcinoma,and there have been no large studies on PEAC to date.Therefore,it is necessary to obtain much more information... BACKGROUND Primary pulmonary enteric adenocarcinoma(PEAC)is a very rare subtype of invasive adenocarcinoma,and there have been no large studies on PEAC to date.Therefore,it is necessary to obtain much more information about the clinical and pathological features,diagnosis,differential diagnosis,and treatment of PEAC.CASE SUMMARY All clinical data of six patients with confirmed PEAC from 2013 to 2018 were collected,and data on diagnosis,differential diagnosis,and treatment of PEAC are discussed combined with all the associated literature.The mean age of six patients was 64.0±5.6(59-73)years old.Their clinical manifestations were heterogeneous,and during their disease course,there were no gastrointestinal symptoms.There was no evidence from colonoscopy or imaging studies to suggest digestive tract tumors or new metastases.The most commonly mutated gene was KRAS(50.0%),and the pathological features of the six cases were similar to those of colorectal cancer.CDX2(83.3%)and CK7(66.7%)had the highest positive rates upon immunohistochemical examination.In the associated literature,252 cases were identified,and the most commonly mutated gene was KRAS(42.9%).Additionally,CDX2(68.3%)and CK7(85.8%)had the highest positive rates.Patients mainly received surgery,chemotherapy,and radiotherapy,immunotherapy was not included.CONCLUSION Positive results for CDX2 and CK7 play an important role in the diagnosis and differential diagnosis of PEAC,and immunotherapy or targeted therapy focused on KRAS needs to be further studied for the treatment of PEAC. 展开更多
关键词 Pulmonary enteric adenocarcinoma IMMUNOHISTOCHEMISTRY Diagnosis Treatment KRAS Case report
下载PDF
The effects of health Qigong Baduanjin on the prevention,treatment,and recovery of COVID‑19 被引量:2
17
作者 Yi‑Zhen HAN Meng‑Wei FU +5 位作者 Zi‑Jie CHEN Fei‑Hong REN Dan‑Dan XIE Jing‑Lei LI Si‑Yu ZHAO qian shen 《Journal of Integrative Nursing》 2020年第2期33-39,共7页
To summarize the application and modern studies on health Qigong Baduanjin by domestic and foreign scholars,combined them with clinical practice of mobile hospital in Wuhan,we explore the prevention,treatment,and reco... To summarize the application and modern studies on health Qigong Baduanjin by domestic and foreign scholars,combined them with clinical practice of mobile hospital in Wuhan,we explore the prevention,treatment,and recovery of Baduanjin in the war against COVID‑19.On the basis of studying ancient classics,such as Huangdi’s Internal Classic,and the concrete exercise methods of Baduanjin,we propose three ideas:prevention before disease onset,promoting healing during illness,and strengthening the body after recovery.We aimed to give full play to Baduanjin in the battle against COVID‑19 to popularize correct prevention and health knowledge for the patients and the healthy as well as to provide a reference for medical workers to use Traditional Chinese Medicine to prevention and treatment. 展开更多
关键词 BADUANJIN COVID‑19 Health Qigong PREVENTION RECOVERY TREATMENT
下载PDF
Recurrent ascites due to spontaneous intraperitoneal bladder rupture after pelvic radiation therapy for cervical cancer 被引量:1
18
作者 qian shen Yuping Yin +5 位作者 Lihong Zhang Dongbo Liu Shiying Yu Huihua Xiong Xianglin Yuan Yongsheng Jiang 《Oncology and Translational Medicine》 2018年第2期72-75,共4页
Radiation cystitis is one of the major complications following radiotherapy for cervical cancer. However, spontaneous intraperitoneal bladder rupture as a result of radiation cystitis following radiotherapy for cervic... Radiation cystitis is one of the major complications following radiotherapy for cervical cancer. However, spontaneous intraperitoneal bladder rupture as a result of radiation cystitis following radiotherapy for cervical cancer is extremely rare. Case presentation: We report a 52-year-old patient who received radiation therapy for cervical cancer 15 years prior to presentation. Eight years prior to presentation, she developed recurrent abdominal distension, oliguria, and ascites. Following ascites drainage and supportive treatment, all symptoms were relieved. However, all symptoms subsequently recurred every few months. The patient underwent exploratory laparotomy twice. The first exploratory laparotomy in July 2015 found no specific abnormalities. The second exploratory laparotomy in November 2016 found an intraperitoneal bladder rupture, and the patient underwent surgical repair. The ascites subsequently resolved. Conclusion: The occurrence of spontaneous intraperitoneal bladder rupture after radiation therapy for cervical cancer is rare. The prognosis is good when diagnosis and treatment are prompt. 展开更多
关键词 radiation cystitis spontaneous intraperitoneal bladder rupture recurrent ascites CERVICALCANCER
下载PDF
Effects of remifentanil combined with propofol anesthesia on IL-1β, IL-6, TNF-α and hemodynamics in patients with brain surgery 被引量:1
19
作者 qian shen Jian Peng +1 位作者 Yuan Shi Lei-Lei Yang 《Journal of Hainan Medical University》 2017年第15期61-64,共4页
Objective: To observe clinical application of remifentanil combined with propofol anesthesia and fentanyl combined with propofol anesthesia in patients with brain surgery, and analyze the change of hemodynamics and se... Objective: To observe clinical application of remifentanil combined with propofol anesthesia and fentanyl combined with propofol anesthesia in patients with brain surgery, and analyze the change of hemodynamics and serum IL-1β, IL-6 and TNF-α before and after operation. Methods: A total of 90 cases of patients with brain surgery were randomly divided into control group and observation group according to lottery. The control group was given fentanyl combined with propofol anesthesia and the observation group was given remifentanil combined with propofol anesthesia, other combined anesthetic drug was same in both groups. Hemodynamics of all subjects before tracheal intubation (T1), after tracheal intubation (T2), when shin incision (T3) and when extubation (T4) and serum IL-1β, IL-6 and TNF-α before and after surgery 24 hours were measured. Results: There was no significant difference in hemodynamic indexes of all patients in both groups at T1. At T2, T3 and T4, heart rate (HR) and mean arterial pressure (MAP) of the observation group were significantly lower than those in the control group at same period, however blood oxygen saturation (SpO2) was higher than that in the control group at corresponding period, it was significant difference. At T2, T3 and T4, observation indexes HR and MAP of the control group were significantly higher than those at T1, while SpO2 was significantly lower than T1, there was statistical significant difference. While there was no significant difference in HR, MAP and SpO2 in observation group at T1, T2, T3 and T4. There was no significant differences in serum IL-1β, IL-6 and TNF-α levels between the control group and the observation group before surgery. After 24 h of operation, the levels of IL-1β, IL-6 and TNF-α in both groups were higher than those before operation;Moreover levels of IL-1β, IL-6 and TNF-α in observation group were significantly lower than those in the control group at same period after 24 h of operation it was statistical significant difference. Conclusion: Remifentanil combined with propofol anesthesia was able to maintain hemodynamic stability and reduce concentration of serum inflammatory factors, which was one of the potential effective anesthetic compounds. 展开更多
关键词 REMIFENTANIL PROPOFOL BRAIN surgery INFLAMMATORY factor HEMODYNAMICS
下载PDF
Regional patterns of atrophy on MRI in Alzheimer’s disease: Neuropsychological features and progression rates in the ADNI cohort
20
作者 Ranjan Duara David A. Loewenstein +5 位作者 qian shen Warren Barker Maria T. Greig Daniel Varon Melissa E. Murray Dennis W. Dickson 《Advances in Alzheimer's Disease》 2013年第4期135-147,共13页
Background: Discrete clinical and pathological subtypes of Alzheimer’s disease (AD) with variable presentations and rates of progression are well known. These subtypes may have specific patterns of regional brain atr... Background: Discrete clinical and pathological subtypes of Alzheimer’s disease (AD) with variable presentations and rates of progression are well known. These subtypes may have specific patterns of regional brain atrophy, which are identifiable on MRI scans. Methods: To examine distinct regions which had distinct underlying patterns of cortical atrophy, factor analytic techniques applied to structural MRI volumetric data from cognitively normal (CN) (n = 202), amnestic mild cognitive impairment (aMCI) (n = 333) or mild AD (n = 146) subjects, in the Alzheimer’s Disease Neuroimaging Initiative (ADNI) database was applied. This revealed the existence of two neocortical (NeoC-1 and NeoC-2), and a limbic cluster of atrophic brain regions. The frequency and clinical correlates of these regional patterns of atrophy were evaluated among the three diagnostic groups, and the rates of progression from aMCI to AD, over 24 months were evaluated. Results: Discernable patterns of regional atrophy were observed in about 29% of CN, 55% of aMCI and 83% of AD subjects. Heterogeneity in clinical presentation and APOE ε4 frequency were associated with regional patterns of atrophy on MRI scans. The most rapid progression rates to dementia among aMCI subjects (n = 224), over a 24-month period, were in those with NeoC-1 regional impairment (68.2%), followed by the Limbic regional impairment (48.8%). The same pattern of results was observed when only aMCI amyloid positive subjects were examined. Conclusions: The neuroimaging results closely parallel findings described recently among AD patients with the hippocampal sparing and limbic subtypes of AD neuropathology at autopsy. We conclude that NeoC-1, Limbic and other patterns of MRI atrophy may be useful markers for predicting the rate of progression of aMCI to AD and could have utility selecting individuals at higher risk for progression in clinical trials. 展开更多
关键词 Subtypes Mild Cognitive Impairment MCI preMCI Amnestic MCI Alzheimer’s Disease Dementia MRI Hippocampal Volume Algorithmic DIAGNOSIS Clinical DIAGNOSIS NEUROPSYCHOLOGICAL Tests Longitudinal Analysis Regional ATROPHY
下载PDF
上一页 1 2 3 下一页 到第
使用帮助 返回顶部