检索结果-南通市图书馆

Spin-canting and weak ferromagnetism in two novel 1D alternating chains with single cis-end-to-end azido bridges

在线全文

学校读者我要写书评

暂无评论

中国科学:化学 2012年第6期42卷 922-923页

作者： SUN HaoLing XIONG jin ji shaofei ZHEN Xue jiA Li LIU Tao Department of Chemistry Beijing Normal UniversityBeijing 100875China State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116012China

By combining trans-4-styrylprydine (tsp) with azide system, we obtained two rare 1D cis-EE-azido-bridged compounds of [M2(N3)4(tsp)4(H2O)2] [M = Mn (1), Co (2)]. The magnetic study reveals that metal ions are anti-ferromagnetically coupled by cis-EE-azido-bridges and they show weak ferromagnetism below 4.0 K (1) and 4.2 K (2) due to the spin-canting caused by asymmetric magnetic interaction.

关键词：氮桥自旋铁磁性一维磁相互作用金属离子 TSP 链

Immune characteristics of severe and critical COVID-19 patients

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2020年第1期5卷 979-981页

作者： Li Yang jianjun Gou jianbo Gao Lan Huang Zhiqiang Zhu shaofei ji Hongchun Liu Lihua Xing Mengying Yao Yi Zhang Biotherapy Center The First Affiliated Hospital of Zhengzhou University450052 ZhengzhouHenanChina Department of Clinical Laboratory The First Affiliated Hospital of Zhengzhou University450052 ZhengzhouHenanChina Department of Radiology The First Affiliated Hospital of Zhengzhou University450052 ZhengzhouHenanChina Department of Emergency The First Affiliated Hospital of Zhengzhou University450052 ZhengzhouHenanChina Department of Radiology Orthopaedic Hospital of Zhengzhou City450052 ZhengzhouHenanChina Department of Respiratory The First Affiliated Hospital of Zhengzhou University450052 ZhengzhouHenanChina

Dear Editor,Recently,the novel coronavirus disease(COVID-19)has broken out worldwide,1 with rapid increase of infected ***-19 dominantly leads to pneumonia.2 Among these COVID-19 patients,some appears to be severe sym... 详细信息

关键词： patients distress acute

Immune molecular classification and characteristics of urothelial bladder cancer

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

Immune molecular classification and characteristics of uroth...

第十四届全国免疫学学术大会

作者： Li Yang Aitian Li Fengsen Liu Qitai Zhao shaofei ji Wen Zhu Weina Yu Ru Zhang Yaqing Liu Wencai Li Yi Zhang The First Affiliated Hospital of Zhengzhou University 郑州市骨科医院

Objective:Urothelial bladder cancer(UBC) is the most common malignant tumor of the urinary system and is one of the ten most common *** patients with advanced cancer have shown durable remission,owing to the introduction of checkpoint inhibitors and other immunotherapies.H owever,not all patients with UBC can benefit from immune checkpoint *** in immune profiles have been linked to the subtypes,prognosis,and therapeutic responses of ***,the aim of this study was to further characterize the immune profile of UBC to identify subtypes that may be relevant for therapy ***:lmmune-related genes(IRGs) were analyzed using principal component analysis(PCA) and uniform manifold approximation and projection(UMAP) to identified the immune subtypes of *** different subtypes survival was estimated by Kaplan-Meier *** analysis evaluated the relationship between populations of the four subtypes and clinical pathological ***,the correlation between the expression of T cell signature genes and patient survival was *** and comparisons showed the immune cell infiltration in diffe rent ***,the relationship between immune cell infiltration and IRGs expression in the hot tumor subtype,and the relationship between immune cell infiltration and inhibitory molecules were explored using correlation ***,the enriched signaling pathways in each subtype,except cold tumor,were measured by GO and KEGG *** exhibited the correlation between these signaling pathways and immune cell infiltration or *** and immunofluorescence staining further confirmed using human UBC ***:The immune profile of UBC can be identified into four subtypes:immune ignorant,cold tumor,immune inactive,and hot *** survival in subtypes 2 and 4 was better than that of subtypes 1 and *** pathology and other clinical parameters of patients in cold tumor

关键词： urothelial bladder cancer immune profiling immune cell infiltration tumor-intrinsic signaling pathway prognosis

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

初中生朗读式微现状与应对策略探究

文化创新比较研究 2021年第2期5卷 79-81页

作者：纪少斐蔡桂琴厦门金鸡亭中学福建厦门361008

因为疫情的影响,上网课成为一种常态。线上教学中的内容大部分是讲授教材,偶尔会结合一些和时事相关的内容讲讲作文。但是在这个过程中,原本初中线下语文教学的大问题,“读”的缺失就更为突出了。该文结合实际情况,分析了朗读式微的原因... 详细信息

因为疫情的影响,上网课成为一种常态。线上教学中的内容大部分是讲授教材,偶尔会结合一些和时事相关的内容讲讲作文。但是在这个过程中,原本初中线下语文教学的大问题,“读”的缺失就更为突出了。该文结合实际情况,分析了朗读式微的原因,并提出了改善的措施。

关键词：朗读驱动力自媒体

在线全文

学校读者我要写书评

暂无评论

南京市献血服务新举措成效初探

中国输血杂志 2014年第11期27卷 1200-1201页

作者：王晖季晓辉傅强李军贾璐赵轶伦蔡旭兵南京医科大学公共卫生学院江苏南京211166 南京红十字血液中心

目的探讨本中心现采取的措施,对提高公众对无偿献血事业的认可度和参与性的影响。方法中心为献血者提供医院＂用血一站式报销＂服务、＂爱心传递卡＂传递服务,并进行了献血服务第三方满意度调查,通过问卷调查的形式,采集所需数据。结果 ... 详细信息

目的探讨本中心现采取的措施,对提高公众对无偿献血事业的认可度和参与性的影响。方法中心为献血者提供医院＂用血一站式报销＂服务、＂爱心传递卡＂传递服务,并进行了献血服务第三方满意度调查,通过问卷调查的形式,采集所需数据。结果 2012年11月-2014年7月,一站式报销总人次777人次,总金额393559元。2013年,中心共回收125份有效的调查问卷。结论为献血者提供让其满意为基础、感动为目标的服务,是实现无偿献血健康、稳定、持续发展的关键。

关键词：用血一站式报销爱心传递卡献血服务

在线全文

学校读者我要写书评

暂无评论

MRI在脊柱血管瘤临床诊断中的应用

中国医药科学 2013年第4期3卷 107-108,114页

作者：姬少绯杨黎牛军杰岳瑞杰程敬亮郑州市骨科医院放射科河南郑州450052 郑州大学第一附属医院重点实验室河南郑州450002 郑州大学第一附属医院核磁共振科河南郑州450002

目的评估MRI在脊柱血管瘤临床诊断中的应用价值。方法收集2007～2012年诊断的20例VH患者资料,利用磁共振成像设备对患者进行常规TSE序列T1WI、T2WI及T2WI压脂的横断面、矢状面扫描。其中14例行矢状位、轴位T1WI压脂增强扫描。结果病程3... 详细信息

目的评估MRI在脊柱血管瘤临床诊断中的应用价值。方法收集2007～2012年诊断的20例VH患者资料,利用磁共振成像设备对患者进行常规TSE序列T1WI、T2WI及T2WI压脂的横断面、矢状面扫描。其中14例行矢状位、轴位T1WI压脂增强扫描。结果病程3周～36个月,平均(8.7±2.6)个月。所有患者均有临床症状,6例表现为局部疼痛,余14例出现局部疼痛伴下肢乏力,呈进行性加重。共检出胸椎受累6例(30%)、腰椎9例(45%)、颈椎5例(25%),其中多发性4例(20%),病灶达27个。17例可见椎旁软组织肿块,17例可见椎管内硬膜外软组织肿块,神经根受压12例,脊髓受压17例。病灶呈T1WI低信号/T2WI等信号5例,T1WI低信号/T2WI高信号7例,T1WI等信号/T2WI高信号5例,T1WI低信号/T2WI低信号2例,T1WI高低混杂信号/T2WI高低混杂信号1例。14例患者做MRI增强后,9例表现为明显均匀强化,2例明显不均匀强化,2例轻度均匀强化,1例轻度不均匀强化。结论 MRI在推测VH组织学类型、评价其活动性或潜在的侵袭性方面具有良好的临床应用价值。

关键词：核磁共振成像脊柱血管瘤侵袭性血管瘤临床诊断

在线全文

学校读者我要写书评

暂无评论

症状性脊柱血管瘤的影像学诊断应用分析

中国医药科学 2013年第5期3卷 122-124页

作者：姬少绯杨黎牛军杰岳瑞杰程敬亮郑州市骨科医院放射科河南郑州450052 郑州大学第一附属医院重点实验室河南郑州450052 郑州大学第一附属医院磁共振科河南郑州450052

目的分析评估影像学检查在症状性脊柱血管瘤临床诊断中的应用价值。方法回顾性分析26例经手术及病理证实的脊柱血管瘤患者的临床及影像学检查资料,其中23例行CT检查,20例行MRI检查。结果 CT可见网眼状影像中夹杂着低密度脂肪,部分呈典型... 详细信息

目的分析评估影像学检查在症状性脊柱血管瘤临床诊断中的应用价值。方法回顾性分析26例经手术及病理证实的脊柱血管瘤患者的临床及影像学检查资料,其中23例行CT检查,20例行MRI检查。结果 CT可见网眼状影像中夹杂着低密度脂肪,部分呈典型"栅栏样"改变。在MRI上病灶呈T1WI低信号/T2WI等信号5例,T1WI低信号/T2WI高信号7例,T1WI等信号/T2WI高信号5例,T1WI低信号/T2WI低信号2例,T1WI高低混杂信号/T2WI高低混杂信号1例。在T2WI上随TE的延长,血管瘤体信号逐渐增高变亮。结论症状性脊柱血管瘤的CT、MRI均有特征性表现。但是,MRI显示范围广,软组织分辨率高,对血管瘤侵袭性的诊断明显优于CT。

关键词：症状性脊柱血管瘤磁共振成像 CT 临床诊断

在线全文

学校读者我要写书评

暂无评论

四肢骨巨细胞瘤的不同影像学表现对比分析

河南医学研究 2015年第2期24卷 12-15页

作者：姬少绯杨黎牛军杰岳瑞杰张毅程敬亮郑州大学第一附属医院磁共振科河南郑州450052 郑州市骨科医院放射科河南郑州450052 郑州大学第一附属医院生物细胞治疗中心河南郑州450052

目的探讨X线、CT及MRI在四肢骨巨细胞瘤诊断中的应用价值及特点。方法回顾性分析23例经手术病理证实为骨巨细胞瘤患者的X线、CT及MRI的影像学资料。结果 21例行X线检查患者中,病灶区均可见圆形或椭圆形低密度区,部分见骨皮质膨胀改变、... 详细信息

目的探讨X线、CT及MRI在四肢骨巨细胞瘤诊断中的应用价值及特点。方法回顾性分析23例经手术病理证实为骨巨细胞瘤患者的X线、CT及MRI的影像学资料。结果 21例行X线检查患者中,病灶区均可见圆形或椭圆形低密度区,部分见骨皮质膨胀改变、溶骨性骨质破坏、"皂泡状"改变。17例行CT检查见偏心性生长、硬化边缘、不同程度的软组织密度影及液-液平面征象,部分累及关节面。18例行MRI检查患者中,等长T1 WI/等长T2 WI 7例,等短T1 WI/等长T2 WI 8例,等T1 WI/等长T2 WI 1例,长T1 WI/等长T2 WI 2例。STIR呈稍高混杂信号6例,余12例呈高信号。8例CT与MRI均检查出液-液平面的患者液平比与肿瘤良恶性的分布不同。结论综合运用X线平片、CT及MRI可提高四肢骨巨细胞瘤诊断及鉴别诊断的准确率;MRI比CT在观察骨巨细胞瘤液-液平面表现上更具优势。

关键词：骨巨细胞瘤 X 线摄影术螺旋计算机体层摄影术磁共振成像

维普期刊数据库博看期刊

A land use regression model incorporating data on industrial point source pollution

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2012年第7期24卷 1251-1258页

作者： Li Chen Yuming Wang Peiwu Li Yaqin ji shaofei Kong Zhiyong Li Zhipeng Bai College of Urban and Environmental Science Tianjin normal UniversityTianjin 300387China College of Environmental Science and Engineering Nankai UniversityTianjin 300071China State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution and Control Tianjin 300071China Chinese Research Academy of Environmental Sciences Beijing 100012China

Advancing the understanding of the spatial aspects of air pollution in the city regional environment is an area where improved methods can be of great benefit to exposure assessment and policy support. We created land use regression （LUR） models for SO2, NO2 and PMI0 for Tianjin, China. Traffic volumes, road networks, land use data, population density, meteorological conditions, physical conditions and satellite-derived greenness, brightness and wetness were used for predicting SOa, NO2 and PMt0 concentrations. We incorporated data on industrial point sources to improve LUR model performance. In order to consider the impact of different sources, we calculated the PSIndex, LSIndex and area of different land use types （agricultural land, industrial land, commercial land, residential land, green space and water area） within different buffer radii （1 to 20 kin）. This method makes up for the lack of consideration of source impact based on the LUR model. Remote sensing-derived variables were significantly correlated with gaseous pollutant concentrations such as SO2 and NO2. R2 values of the multiple linear regression equations for SO2, NO2 and PM10 were 0.78, 0.89 and 0.84, respectively, and the RMSE values were 0.32, 0.18 and 0.21, respectively. Model predictions at validation monitoring sites went well with predictions generally within 15% of measured values. Compared to the relationship between dependent variables and simple variables （such as traffic variables or meteorological condition variables）, the relationship between dependent variables and integrated variables was more consistent with a linear relationship. Such integration has a discernable influence on both the overall model prediction and health effects assessment on the spatial distribution of air pollution in the city region.

关键词： land use regression air pollution Tianjin point source GIS