检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

肝脏炎性肌纤维母细胞瘤的CT及MRI表现

中国CT和MRI杂志 2024年第8期22卷 83-85页

作者：柯志虹邱思凡罗超然林丽丹许尚文福建医科大学福总临床医学院(第九〇〇医院) 联勤保障部队第九〇〇医院放射诊断科福建医科大学孟超肝胆医院影像科福建福州350025

目的探讨肝脏炎性肌纤维母细胞瘤(HIMT)的MRI、CT表现与病理对照。方法回顾性分析20例经病理证实为肝IMT的临床资料、CT及MRI表现,讨论并总结肝IMT的影像学表现及病理特点。结果20例镜下均表现为不同程度的凝固性坏死、纤维组织增生及... 详细信息

目的探讨肝脏炎性肌纤维母细胞瘤(HIMT)的MRI、CT表现与病理对照。方法回顾性分析20例经病理证实为肝IMT的临床资料、CT及MRI表现,讨论并总结肝IMT的影像学表现及病理特点。结果20例镜下均表现为不同程度的凝固性坏死、纤维组织增生及炎症细胞浸润。11例位于肝右叶,9例位于肝左叶,其中13例位于肝边缘或包膜下。16例CT平扫表现为稍低密度,1例呈等密度。T_(1)WI 13例呈低或稍低信号,1例呈等信号,T_(2)WI 14例均呈高或稍高信号。其中4例中央可见小结节状异常信号,相对于病灶主体在T_(1)WI上呈更低信号,T_(2)WI上呈更高信号,11例DWI上呈高或稍高信号,2例DWI上呈等信号。三期增强扫描:20例均表现为延迟性强化,15例呈环状强化;3例呈分隔样强化,3例呈全瘤样强化,4例可见“厚壁圆环中心点”征,4例见门静脉漂浮征。结论肝IMT多发生于肝包膜下或肝边缘,增强扫描多呈延迟性强化,门脉期及延迟期环状强化、门静脉漂浮征具有一定特征性,对肝IMT的诊断及鉴别诊断具有一定意义。

关键词：肝脏炎性肌纤维母细胞瘤磁共振成像病理学

Interactions between commensal bacteria and viral infection:insights for viral disease control in farmed animals

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2021年第9期64卷 1437-1448页

作者： chao ran Yu Li Xufa Ma Yadong Xie Mingxu Xie Yuting Zhang Wei Zhou Yalin Yang Zhen Zhang Li Zhou Kaijian Wei Zhigang Zhou Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs Feed Research InstituteChinese Academy of Agricultural SciencesBeijing 100081China Sino-Norway Joint Lab on Fish Gut Microbiota Feed Research InstituteChinese Academy of Agricultural SciencesBeijing 100081China College of Fisheries Huazhong Agricultural UniversityWuhan 430070China State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyThe Innovation Academy of Seed DesignChinese Academy of SciencesWuhan 430072China

Viral diseases cause serious economic loss in farmed animals ***,the efficacy of remedies for viral infection in farmed animals is limited,and treatment strategies are generally lacking for aquatic *** of commensal microbiota and viral infection have been studied in recent years,demonstrating a third player in the interaction between hosts and ***,we discuss recent developments in the research of interactions between commensal bacteria and viral infection,including both promotion and inhibition effect of commensal bacteria on viral pathogenesis,as well as the impact of viral infection on commensal *** antiviral effect of commensal bacteria is mostly achieved through priming or regulation of the host immune responses,involving differential microbial components and host signaling pathways,and gives rise to various antiviral ***,we summarize studies related to the interaction between commensal bacteria and viral infection in farmed animals,including pigs,chickens,fish and invertebrate *** studies in this area will deepen our understanding of antiviral immunity of farmed animals in the context of commensal microbiota,and promote the development of novel strategies for treatment of viral diseases in farmed animals.

关键词： virus intestinal microbiota commensal bacteria farmed animals probiotics

New cobweb-structure hollow Bragg optical fibers

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2007年第1期3卷 10-13页

作者： YU Rong-jin ZHANG Yong-qiang ZHANG Bing WANG chao-ran WU Chang-qi College of Information Science and Engineering Yanshan University Qinhuangdao 066004 China

A new type of Bragg fibers, i.e. hollow-core cobweb-structured optical fibers, which can be used to the low-loss transmis- sion from visible to near infrared region (0.65 μm-1.55 μm), terahertz wave (200 μm-480 μm) and circular-polariza- tion-maintaining single-mode transmission are investigated. Results show that the hollow-core cobweb-structured fibers have less loss than other hollow-core Bragg fibers. The fibers can be constituted by using the plastics or glasses with large absorption losses.

关键词：蛛网结构空芯布拉格光学纤维覆层

Influence of childhood trauma on adolescent internet addiction: The mediating roles of loneliness and negative coping styles

在线全文

学校读者我要写书评

暂无评论

World Journal of Psychiatry 2023年第12期13卷 1133-1144页

作者： Wang-Lin Dong Yuan-Yuan Li Yi-Ming Zhang Qian-Wen Peng Guang-Li Lu chao-ran Chen College of Nursing and Health Institute of Nursing and HealthHenan UniversityKaifeng 475000Henan ProvinceChina School of Business Institute of Business AdministrationHenan UniversityKaifeng 475000Henan ProvinceChina

BACKGROUND In the information age,the use of the internet and multimedia tools has large effects on the life of middle school *** use of the internet may result in internet addiction(IA).Thus,actively exploring the factors influencing adolescent and the mechanism of addiction as well as promoting adolescent physical and mental health and academic development are priorities that families,schools,and society urgently need to *** To explore the effect of childhood trauma on adolescent IA and to consider the roles of loneliness and negative coping *** A total of 11310 students from six junior high schools in Henan,China,completed the child trauma questionnaire,IA test,loneliness scale,and simple coping style *** addition,data were collected from 1044 adolescents with child-hood trauma for analysis with IBM SPSS 26.0 and AMOS 28.0;we examined the relationships among childhood trauma,IA,loneliness,and negative coping *** We found that childhood trauma not only directly affected adolescents’IA but also affected IA through loneliness and negative coping *** Therefore,this study has theoretical implications regarding adolescent mental health and may inform interventions for IA.

关键词： Addictive behavior Mental health Coping styles Trauma Loneliness

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

时滞离散神经网络的同步控制

物理学报 2009年第1期58卷 139-142页

作者：吴然超安徽大学数学科学学院合肥230039

利用既有效又便于实施的时滞状态反馈控制器,根据所给定的条件构造相应的不等式,研究了带有时滞的离散神经网络模型的同步控制问题,给出了该离散系统指数同步的充分条件.在设计同步控制的时候,没有假设激励函数的有界性、可微性和单调性... 详细信息

利用既有效又便于实施的时滞状态反馈控制器,根据所给定的条件构造相应的不等式,研究了带有时滞的离散神经网络模型的同步控制问题,给出了该离散系统指数同步的充分条件.在设计同步控制的时候,没有假设激励函数的有界性、可微性和单调性,给出的条件简便易实施.数值结果进一步证明了该控制方法的有效性.

关键词：离散神经网络时滞同步

Research advances in the structure,function,and regulation of the gill barrier in

在线全文

学校读者我要写书评

暂无评论

Water Biology and Security 2023年第2期2卷 13-22页

作者： Xingyu Chen Shubin Liu Qianwen Ding Tsegay Teame Yalin Yang chao ran Zhen Zhang Zhigang Zhou Sino-Norway Joint Lab on Fish Gut Microbiota Feed Research InstituteChinese Academy of Agricultural SciencesBeijing100081China Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs Feed Research InstituteChinese Academy of Agricultural SciencesBeijing100081China

The gill is an important organ in fish that is involved in various physiological functions,including respiration,filter-feeding,ammonia nitrogen excretion,and *** physiological functions of gills are closely related to their structure,external feeding conditions,and environmental ***,we first briefly summarize the basic structure and functions of the gills of teleosts,then explain the structure and function of the gill barrier(as a microbial barrier,a chemical barrier,a physical barrier,and an immune barrier)in ***,we introduce the regulation of fish gill barrier health by ubiquitous feeding factors and environmental factors,and provide an outlook on the prospects of gill barrier *** found that improving health through modulating feed factors is more convenient than improving environmental *** review increases our understanding of how nutrient composition and level in fish diet influences gill health and overall growth performance of fish.

关键词： Fish gill Gill barrier Feed factor Environmental factor Gill microbiota

电针干预对慢性疲劳综合征大鼠海马组织蛋白质磷酸化表达的影响

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

针刺研究 2024年第6期49卷 594-603页

作者：杨燕孙忠人李超然冯楚文王玉琳王德龙屈媛媛郭静石天宇孙闻孙维伯杨添淞黑龙江中医药大学哈尔滨150040 黑龙江中医药大学附属第二医院哈尔滨150001 浙江中医药大学附属第三医院杭州310005 黑龙江中医药大学附属第一医院哈尔滨150040 河北燕达医院河北廊坊065201 北京中医药大学北京100029 黑龙江神志医院哈尔滨150036 哈尔滨医科大学第一临床医学院哈尔滨150001 黑龙江省中医药信息学重点实验室哈尔滨150040

目的:观察电针对慢性疲劳综合征(CFS)大鼠行为学和海马组织蛋白磷酸化的影响,探讨电针治疗CFS的作用机制。方法:将雄性SD大鼠随机分为空白组、模型组和电针组,每组12只。采用多因素慢性复合应激法制备CFS模型。电针组大鼠给予电针“神庭... 详细信息

目的:观察电针对慢性疲劳综合征(CFS)大鼠行为学和海马组织蛋白磷酸化的影响,探讨电针治疗CFS的作用机制。方法:将雄性SD大鼠随机分为空白组、模型组和电针组,每组12只。采用多因素慢性复合应激法制备CFS模型。电针组大鼠给予电针“神庭”(透刺“百会”)和“大椎”治疗,每日1次,每次15 min,连续28 d。治疗结束后观察各组大鼠体质量、摄食量和饮水量,采用实验大鼠一般情况半定量评分观察表评价大鼠的疲劳程度,采用旷场实验及Morris水迷宫实验评价大鼠焦虑程度和学习记忆能力。取各组大鼠海马组织进行磷酸化Label-free定量蛋白质组学检测。结果:治疗结束后,与空白组比较,模型组大鼠体质量降低(P<0.01),摄食量减少(P<0.05),一般情况半定量评分升高(P<0.01),旷场实验总穿格次数和进入中央区次数均增多(P<0.01),Morris水迷宫实验逃避潜伏期延长(P<0.01)、穿越原平台次数减少(P<0.01)。与模型组比较,电针组大鼠一般情况半定量评分降低(P<0.01),旷场实验总穿格次数减少(P<0.05),Morris水迷宫实验逃避潜伏期缩短(P<0.01)、穿越原平台次数增加(P<0.01)。与空白组比较,模型组有297个差异表达肽段,对应255个蛋白,与模型组比较,电针组有245个差异表达肽段,对应198个蛋白,其中共有24个重合蛋白在电针治疗后表达回调。GO分析表明,电针干预的作用在生物学过程方面主要为对蛋白质聚合和细胞骨架组织的调节,在分子功能聚类上表现为对蛋白质聚合的调节,在细胞组分聚类方面表现为对突触功能的影响。KEGG分析结果显示,电针干预对胰岛素分泌、轴突导引、磷脂酰肌醇信号系统及赖氨酸生物合成等对中枢神经系统组织功能有重要作用的信号通路产生了影响。结论:电针可以改善CFS模型大鼠的疲劳状态,缓解焦虑情绪,提高学习记忆能力,其机制可能与调节海马组织蛋白磷酸化水平有关。

关键词：电针慢性疲劳综合征磷酸化蛋白质组学液相色谱-质谱海马

Lycium barbarum polysaccharide-glycoprotein preventative treatment ameliorates aversive stimuli-induced depression

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2021年第3期16卷 543-549页

作者： Yun-Wei Fu Yan-Fang Peng Xiao-Dan Huang Yan Yang Lu Huang Yue Xi Zheng-Fang Hu Song Lin Kwok-Fai So chao-ran Ren Guangdong-Hongkong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhouGuangdong ProvinceChina Aier Eye Institute ChangshaHunan ProvinceChina Department of Physiology School of MedicineJinan UniversityGuangzhouGuangdong ProvinceChina Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory) GuangzhouGuangdong ProvinceChina Center for Brain Science and Brain-Inspired Intelligence Guangdong-Hong Kong-Macao Greater Bay AreaGuangzhouGuangdong ProvinceChina Co-innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Ophthalmology and State Key Laboratory of Brain and Cognitive Sciences The University of Hong KongHong Kong Special Administrative RegionChina

Previous studies have shown that Lycium barbarum polysaccharide,the main active component of Lycium barbarum,exhibits antiinflammatory and antioxidant effects in treating neurological ***,the therapeutic action of Lycium barbarum polysaccharide on depression has not been *** this investigation,we established mouse models of depression using aversive stimuli including exposure to fox urine,air puff and foot shock and physical ***,we administered 5 mg/kg per day Lycium barbarum polysaccharide-glycoprotein to each mouse intragastrically for the 28 *** results showed that long-term exposure to aversive stimuli significantly enhanced depressive-like behavior evaluated by the sucrose preference test and the forced swimming test and increased anxietylike behaviors evaluated using the open field *** addition,aversive stimuli-induced depressed mice exhibited aberrant neuronal activity in the lateral ***,concurrent Lycium barbarum polysaccharide-glycoprotein treatment significantly reduced these *** findings suggest that Lycium barbarum polysaccharide-glycoprotein is a potential preventative intervention for depression and may act by preventing aberrant neuronal activity and microglial activation in the lateral *** study was approved by the Jinan University Institutional Animal Care and Use Committee(approval No.20170301003)on March 1,2017.

关键词： aversive stimuli behaviors depression immune response inflammation lateral habenula Lycium barbarum polysaccharide mice microglia neuron

Effect of micro-Al_(2)O_(3) powders on oxidation and corrosion behaviors of low-carbon MgO-C refractories

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2024年第6期31卷 1522-1534页

作者： Yang Chen Zeng-yi Li Hao-bo Tan Yu-ran Fu Jun Ding Cheng-ji Deng chao Yu School of Materials Science and Engineering Hunan Institute of TechnologyHengyang 421002HunanChina The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina

To solve the problem of poor high-temperature service performance caused by low carbonization of MgO-C refractories,low-carbon MgO–C refractories with excellent thermal shock,oxidation and corrosion resistances were successfully designed by using SiC whiskers as reinforcing phases and introducing micro-Al_(2)O_(3) powders as *** results indicated that the addition of micro-Al_(2)O_(3) powders optimized the internal structure of the material,like the columnar β-Si_(3)N_(4) with a stepped distribution and the mosaic structure formed between granular and flaky Mg_(2)SiO_(4),which synergistically strengthened and toughened the material and gave the material excellent mechanical properties and thermal shock ***,the cold modulus of rupture and cold crushing strength after thermal shock were increased by 4.1 and 20.3 MPa,***,the addition of micro-Al_(2)O_(3) powders promoted the formation of fine particles of Mg_(2)SiO_(4),MgAl_(2)O_(4) and MgO,as well as a dense protective layer of Mg_(2)SiO_(4) in the material under high-temperature ***,spinel and high-temperature solid solution were formed in the corrosion *** oxidation and corrosion resistances were greatly improved by 41%and 15%,respectively.

关键词： Low-carbon MgO-C refractory Oxidation resistance Corrosion resistance Thermal shock resistance Micro-Al_(2)O_(3)powder