检索结果-南通市图书馆

Ictal-interictal continuum:a review of recent advancements

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Epileptologica 2020年第1期2卷 101-110页

作者： James x.tao xiaoxiao Qin Qun Wang Department of Neurology The University of Chicago5841 South Maryland Ave.MC2030ChicagoIL 6063U.S.A.. Department of Neurology Beijing Tiantan HospitalCapital Medical UniversityBeijingP.R.China. China National Clinical Research Center for Neurological Diseases BeijingP.R.China.

Continuous electroencephalogram(cEEG)has become an indispensable technique in the management of critically ill patients for early detection and treatment of non-convulsive seizures(NCS)and non-convulsive status epilepticus(NCSE).It has also brought about a renaissance in a wide range of rhythmic and periodic patterns with heterogeneous frequency and *** patterns share the rhythmic and sharp appearances of electrographic seizures,but often lack the necessary frequency,spatiotemporal evolution and clinical accompaniments to meet the definitive criteria for ictal *** may be associated with cerebral metabolic crisis and neuronal injury,therefore not clearly interictal either,but lie along an intervening spectrum referred to as ictal-interictal continuum(IIC).Generally speaking,rhythmic and periodic patterns are categorized as interictal patterns when occurring at a rate of2.5 Hz with spatiotemporal *** such,IIC commonly includes the rhythmic and periodic patterns occurring at a rate of 1–2.5 Hz without spatiotemporal evolution and clinical *** there are no evidence-based guidelines on when and if to treat patients with IIC patterns,and particularly how aggressively to treat,presenting a challenging electrophysiological and clinical *** practice,a diagnostic trial with preferably a non-sedative anti-seizure medication(ASM)can be considered with the end point being both clinical and electrographic *** available and necessary,correlation of IIC with biomarkers of neuronal injury,such as neuronal specific enolase(NSE),neuroimaging,depth electrode recording,cerebral microdialysis and oxygen measurement,can be assessed for the consideration of ASM *** we review the recent advancements in their clinical significance,risk stratification and treatment algorithm.

关键词： Periodic discharges Critical care Continuous EEG Ictal-interictal continuum Nonconvulsive seizures

A STUDY OF TEMPERATURE-DEPENDENT VALENCE BOND STRUCTURE OF TITANIUM

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

Acta Metallurgica Sinica(English Letters) 2007年第1期20卷 27-34页

作者： x.B. Li Y.Q. xie Y.Z. Nie H.J. Peng H.J. tao F.x. Yu College of Materials Science and Engineering Central South University Changsha 410083 China

On the basis of energy and shape method for the determination of the valence bond （ VB ） structures of crystal, the valence bond structure of titanium is redetermined at room temperature and calculated in the whole temperature range of 0-1943K. The outer shell electronic distribution of Ti is ec^29907. （sc^0.4980 ＋ dc^2.4927） ef^1.0098 in crystal. The temperature dependences of the VB structures of hcp and bcc phases are the same. The VB structures of hcp and bcc phases monotonically increase or decrease with the increase in temperature, but show discontinuous changes at the phase-transformation temperature 1155K.

关键词： valence bond structure temperature titanium

在线全文

学校读者我要写书评

暂无评论

圆管内潜热型功能流体对流换热的实验研究

工程热物理学报 2005年第2期26卷 283-285页

作者：郝英立 A Khan Yong-x tao 东南大学动力工程系南京210096 佛罗里达国际大学机械与材料工程系美国迈阿密33199

本文实验研究了由正十四烷和尿素甲醛树脂制成的相变微胶囊和水混合组成的潜热型功能流体流过等热流圆管时的对流换热特性。相变微胶囊的加入可以显著增强流体与壁面间的对流换热,显著降低壁面温度和流体温度;在融化段对流换热系数呈增... 详细信息

本文实验研究了由正十四烷和尿素甲醛树脂制成的相变微胶囊和水混合组成的潜热型功能流体流过等热流圆管时的对流换热特性。相变微胶囊的加入可以显著增强流体与壁面间的对流换热,显著降低壁面温度和流体温度;在融化段对流换热系数呈增加分布,流体和壁面温度各自基本稳定在相应的温度值。强化对流换热的效果主要在融化段,并随流体中相变微胶囊浓度的增大而增强,也随R-eynolds数的增大而增强。

关键词：对流换热潜热型功能流体相变

在线全文

学校读者我要写书评

暂无评论

壁面结霜初始状态实验研究

东南大学学报（自然科学版） 2005年第1期35卷 149-153页

作者：郝英立 Jose Iragorry Yong x.tao 东南大学动力工程系南京210096 佛罗里达国际大学机械与材料工程系迈阿密fl33174

对自然对流条件下干燥和湿润2种初始状况平板表面上的初始结霜现象进行了显微观测.实验结果表明,表面稳定温度愈低,结霜发生愈早,临界温度也愈低.干燥表面上凝结的液滴及随后冻结的冰粒形状较湿润表面的规整且接近圆形.干燥表面发生结... 详细信息

对自然对流条件下干燥和湿润2种初始状况平板表面上的初始结霜现象进行了显微观测.实验结果表明,表面稳定温度愈低,结霜发生愈早,临界温度也愈低.干燥表面上凝结的液滴及随后冻结的冰粒形状较湿润表面的规整且接近圆形.干燥表面发生结霜较湿润表面早,其差别随表面稳定温度的降低而减小.表面稳定温度高于-15℃时,2类表面的临界温度几乎相同;随着表面稳定温度降低,干燥表面的临界温度较湿润表面低,其差别随着表面稳定温度的降低而增大.分析表明结霜临界状态时冰粒的大小及其在冷表面上的分布具有分形特征,并提出一基于分形理论定量描述其特征的方法.干燥和湿润2种表面上临界结霜时冰粒的平均直径并无显著差别,而湿润表面上的冰粒表面覆盖率较干燥表面的大.

关键词：结霜结霜临界状态分形自然对流

在线全文

学校读者我要写书评

暂无评论

初始成长阶段霜层特性实验研究

东南大学学报（自然科学版） 2005年第1期35卷 154-158页

作者：郝英立 Jose Iragorry Yong x.tao 东南大学动力工程系南京210096 佛罗里达国际大学机械与材料工程系迈阿密fl33174

对自然对流条件下水平表面的初始结霜过程进行了实验研究.在壁温为-34～-19℃范围内,利用显微镜对霜层成长过程进行了一系列显微观测,应用双曝光全息干涉法测量了霜层表面温度和周围温度分布,还测量了通过冷壁面的热流密度和霜层厚度随... 详细信息

对自然对流条件下水平表面的初始结霜过程进行了实验研究.在壁温为-34～-19℃范围内,利用显微镜对霜层成长过程进行了一系列显微观测,应用双曝光全息干涉法测量了霜层表面温度和周围温度分布,还测量了通过冷壁面的热流密度和霜层厚度随时间的变化.获得了霜层有效导热系数和霜表面与环境空气间的自然对流传热系数,并关联为准则关系式.霜层初始成长阶段与充分成长阶段有着显著不同的特性.随着霜层的形成和成长,霜层表面温度逐渐升高,霜层厚度增加速率减缓,有效导热系数迅速降低,自然对流传热系数也减小.冷壁面温度低时,自然对流传热系数较大,霜层成长初期厚度增加也较快,但对有效导热系数影响不大,仅为冰导热系数的117%～17%.

关键词：结霜自然对流全息干涉

Effect of levetiracetam and valproate on late‑onset post‑traumatic seizures

在线全文

学校读者我要写书评

暂无评论

Acta Epileptologica 2023年第2期6卷 86-89页

作者： Yanli Wang Yiqi Wang Huifang Wang xiaoping Du Jie Miao James x.tao Meizhen Sun Department of Rehabilitation Shanxi Traditional Chinese Medical HospitalTaiyuan 030012China Department of Neurology The First Hospital of Shanxi Medical UniversityTaiyuan 030012China Department of Neurology University of ChicagoChicagoIL 60601USA

Background To compare the preventive effects of levetiracetam and valproate on late-onset post-traumatic seizures in patients with traumatic brain injury(TBI).Methods A total of 95 patients with TBI were recruited from 2017 to *** were randomized into three groups:levetiracetam(LEV)group(n=30)receiving LEV treatment(500 mg,bid,po);valproate group(n=32)receiving sodium valproate(500 mg/d,once daily,po);and control group(n=33)receiving no anti-seizure *** and valproate were given to corresponding groups within seven days after TBI,and the administration lasted for one *** incidence of epilepsy and adverse events were evaluated at 7 days and 12 months *** The cumulative incidences of late post-traumatic seizures at the 12-month follow-up in the LEV,valproate,and control groups were 3.33%,12.50%and 15.63%,*** cumulative incidence of late post-traumatic seizures in the LEV group was significantly lower than those in the valproate and control groups(P0.05).Conclusions LEV can reduce the cumulative incidence of late post-traumatic seizures,whereas valproate can not.

关键词： Levetiracetam Valproate Post-traumatic seizure

EFFECT OF RARE EARTH ON VANADIZATION PROCESS IN BORAx BATH

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

Acta Metallurgica Sinica(English Letters) 1999年第5期12卷 968-973页

作者： x.K. tao, x.Cong, R.S. Peng, J.Liu and Z.Y. Liu Tianjin Institute of Technology, Tianjin 300191, China

This paper investigates the effect of rare earth elements on the kinetic process, microstructure and mechanical properties of vanadization in borax bath. The results show that addition of rare earth elements to vanadizing agent has obvious catalytic effect on the rate of vanadization, which has been enchanced by 30%. The wear and corrosion resistance of vanadium carbide layer were prompted by the addition of rare earth to the agent. Through increasing vanadium potential of the agent, activating the surface of workpieces and decreasing the activation energy of diffusion of carbon, rare earth elements accelerate the rate of vanadization process.

关键词： rare earth elements vanadization in borax bath activation energy of diffusion

Sudden unexpected death after acute symptomatic seizures in a patient on mechanical ventilation

在线全文

学校读者我要写书评

暂无评论

Acta Epileptologica 2020年第1期2卷 195-199页

作者： Raisa C.Martinez Naoum P.Issa Shasha Wu xi Liu Sandra Rose James x.tao Adult Epilepsy Center Department of NeurologyThe University of Chicago5841 South Maryland Ave.MC2030ChicagoIL 60637USA. Department of Neurology Zhongnan HospitalWuhan UniversityWuhanHubei ProvinceP.R.China.

Background:The mechanism of sudden unexpected death in epilepsy remains poorly *** induced cardiac arrhythmia,central and obstructive apneas have been proposed as possible causes of *** we report a unique case of seizure related sudden unexpected death in a patient whose airway was fully protected by intubation and mechanic ventilation in the absence of fatal cardiac *** presentation:A 70-year-old woman was undergoing mechanical ventilation and videoelectroencephalography(EEG)monitoring following two convulsive seizures with ictal hypoventilation and *** hours after intubation,she suffered another generalized tonic clonic seizure lasted for 3 min and developed postictal generalized EEG suppression in the presence of stable vital signs with SpO2>90%.EEG suppression persisted throughout the postictal *** was a significant fluctuation of systolic blood pressure between 50 and 180 mmHg with several bouts of hypotensionxcept for possible hypoxic and ischemic injury leading to the diffuse cerebral ***:Given the reliable periictal airway protection,neither seizure induced central apnea nor obstructive apnea appeared to be the direct cause of death in this unique *** the absence of fatal cardiac arrhythmia,diffuse cerebral edema secondary to seizure-induced autonomic dysfunction,hypotension and hypoxemia might be the cause of death,highlighting the etiological heterogeneity of sudden unexpected death in epilepsy.

关键词： Convulsive seizure SUDEP Mechanic ventilation Apnea Prone position

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

颞叶良性脑电图变异型脑电-临床研究进展

中国现代神经疾病杂志 2022年第7期22卷 549-554页

作者：孙太欣 James x.tao 王群首都医科大学电力教学医院国家电网公司北京电力医院神经内科北京100073 美国芝加哥大学成人癫痫中心 IL60637 首都医科大学附属北京天坛医院神经病学中心国家神经系统疾病临床医学研究中心 100070 北京脑重大疾病研究院 100069

头皮脑电图因操作便捷、无创、可重复等特点,广泛应用于癫痫及其他脑病的诊断与治疗。长期的临床实践发现有诸多脑电图异常放电模式与临床癫痫发作无明确关联性,可能属于良性变异型,亦可能是颅内异常放电,至今尚无明确定论。本文拟对颞... 详细信息

头皮脑电图因操作便捷、无创、可重复等特点,广泛应用于癫痫及其他脑病的诊断与治疗。长期的临床实践发现有诸多脑电图异常放电模式与临床癫痫发作无明确关联性,可能属于良性变异型,亦可能是颅内异常放电,至今尚无明确定论。本文拟对颞叶常见的良性变异型研究进展进行概述,以理清长期以来的争议点,为相关基础与临床研究奠定基础。

关键词：颞叶脑电描记术良性变异型(非MeSH词) 综述