检索结果-南通市图书馆

Pyloric Stenosis and Nonbilious Vomiting in Infants: Negative Base Excess and Hypercapnia—Two Opposing Points of One Scale a Comparative Case Series

引用

Open Journal of Pediatrics 2023年第1期13卷 104-112页

作者： Ralf-Bodo tröbs Tomasz Baranski Andreas Lipphaus Matthias Nissen Department of Pediatric Surgery St. John’s Hospital Helios Kliniken GmbH Duisburg Germany Biomechanics Research Group Chair of Product Development Faculty of Mechanical Engineering Ruhr University Bochum Bochum Germany Department of Pediatric Surgery Ruhr-University of Bochum St. Marie’s Hospital Witten Sankt Elisabeth Gruppe Witten Germany

Background: Blood pH and bicarbonate estimations are basal acid-base laboratory tests that are performed in infants with infantile hypertrophic pyloric stenosis (IHPS). This study aimed to define the clinical value of pCO2 and BE in infants suspected to have IHPS. Methods: We collected data from 80 “surgical” infants younger than 100 days with prolonged nonbilious vomiting who were suspected to have IHPS. In 65 infants, pyloric stenosis was confirmed, and 15 infants had nonsurgical conditions. Capillary blood was tested for standard acid-base parameters and lactate. The two groups were compared. Results: Eighty-eight percent of the IHPS infants had elevated standard bicarbonate levels (st bicarb) > 25 mmol/l, and 60% had BE > 3.5 mmol/l;12% of the infants showed hypercapnia (pCO2 ≥ 50 mmHg) associated with markedly increased standard bicarbonate and BE. Infants with nonsurgical vomiting were older at admission (p = 0.002), had a longer duration of vomiting (p 2 (p = 0.021), lower st bicarb (p trend to anemia (p = 0.002). Conclusions: In infants with IHPS/nonbilious vomiting, acid-base analysis (ABA) is equivocal or inconclusive. These findings may be misleading and could result in a false clinical decision. Nonsurgical vomiting is associated with a lower degree of alkalosis, normocapnia to slight hypercapnia and a base deficit. However, even infants with IHPS may present with a negative BE. In infants with IHPS and severe alkalosis, hypercapnia carries a risk for respiratory depression. Monitoring the infant’s respiration allows for the early detection of respiratory deterioration.

关键词： Pyloric Stenosis Nonbilious Vomiting Hypoventilation Base Excess Hypercapnia

来源：

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

Do Immaturity, Dehydratation or Alkalosis Predispose to Intraoperative Complications at Pyloromyotomy?

引用

Open Journal of Pediatrics 2016年第3期6卷 203-212页

作者： Ralf-Bodo tröbs Lars Burghardt Micha Bahr Matthias Nissen Department of Pediatric Surgery Clinic Marien Hospital Herne St. Elisabeth Gruppe Ruhr-Universit?t Bochum Herne Germany

Background: Hypertrophic pyloric stenosis is the most important cause for propulsive non-bilious vomiting in infants of the first trimester. Extramucous splitting of the hypertrophic pyloric muscle is the surgical gold standard for treatment. Serious major complications of pyloromyotomy (PM) are mucosal perforation and incomplete muscle splitting. The aim of the presented study is to find out if intraoperative complications are predisposed by biometric or biochemical factors. Furthermore, we looked for the influence of the board certification of the primary surgeon. Patients and Methods: 162 infants with IHPS were operated during a six-year period (n = 150 laparoscopic operations). We had 8 major complications (4.9%): iatrogenic mucosal perforation occurred in 6 cases, and incomplete PM in 2 infants. Preoperative demographic data and data resulting from the blood acid-base- and ion-analysis were compared with data of a previously published reference group from our institution (tr?bs RB. Open J Pediatr, 2014;4: 208-215). Results: The duration of vomiting, the grade of dehydration and the severity of blood alkalosis did not differ between both groups. Furthermore, we found no influence of the gestational age and birth weight on the occurrence of intraoperative complications. It seems that early postnatal age (p = 0.07) and low body weight at surgery (p = 0.055) may contribute to surgical problems. Board certification as a paediatric surgeon did not influence the rate of intraoperative complications. Conclusions: Laboratory data did not show any predisposition to intraoperative complications. It is assumed that small infants with early occurring symptoms carry an elevated risk for intraoperative events. Our data support the hypothesis that the rate of intraoperative complications at PM is mainly influenced by skills and experience of the surgeon.

关键词： Hypertrophic Pyloric Stenosis Pyloromyotomy Complication Perforation Alkalosis Surgical training

来源：

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

越南太原外国语学院学校体育开展现状与发展对策的研究

越南太原外国语学院学校体育开展现状与发展对策的研究

引用

作者： V(?) M(?)NH tr(?)NG 贵州师范大学

学位级别：硕士

为了进一步了解越南太原外国语学院学校体育开展现状,为有关部门决策提供依据和建议。本文采用文献资料法,问卷调查法,专家访谈法,实地考察法与数理统计法,主要对太原外国语学院学校体育的体育教师队伍,体育场地器材与经费、体育教学、... 详细信息

为了进一步了解越南太原外国语学院学校体育开展现状,为有关部门决策提供依据和建议。本文采用文献资料法,问卷调查法,专家访谈法,实地考察法与数理统计法,主要对太原外国语学院学校体育的体育教师队伍,体育场地器材与经费、体育教学、课外体育活动、行政管理等方面进行了调查。结果表明,太原外国语学院学校体育活动整体开展不容乐观,受到多方面因素的制约。学校体育教师队伍教龄不长,缺乏教学经验,教师的专业及业务能力得不到培训和提高;体育教学内容不合理,课时少;学校领导不重视课外体育活动,学校每年举行体育比赛少,影响学生课外体育的兴趣;学校起步晚,现缺少学校体育管理机构和学校体育工作任务与职能的相关规定;学校场地器材配套不完整甚至缺乏,满足不了实际需求。因此,太原外国语学院学校体育场地器材难以满足学生等诸多问题亟待解决。为了促进越南太原外国语学院学校体育顺利开展的提高,提出未来太原外国语学院学校体育发展的对策:(1)提高师生对学校体育工作作用及地位的认识;(2)提高体育教师的专业能力;(3)增强学校体育产业的物质基础及资金;(4)改善体育教学内容和方法;(5)多样化学校课外体育活动;(6)学校体育组织管理机构的改进。

关键词：越南太原学校体育现状发展对策

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Facilitating Water electrolysers for electricity-grid services in Europe through establishing standardized testing protocols

引用

Clean Energy 2020年第4期4卷 379-388页

作者： Shi You Regine Reissner Christoph Imboden Cyril Bourasseau Pablo Marcuello Daniel Greenhalgh Ben Green Laura Abadía Vanesa Gil Marius Bornstein Yi Zong Xu Chen Chresten træholt Department of Electrical Engineering Technical University of DenmarkElektrovej 325DK-2800 Kgs.LyngbyDenmark German Aerospace Center Institute of Engineering ThermodynamicsPfaffenwaldring 38-4070569 StuttgartGermany Lucerne School of Engineering and Architecture Technikumstrasse 21CH-6048 HorwSwitzerland CEA LitenDepartment of Biomass and Hydrogen Technologies17 Avenue des Martyrs38000 GrenobleFrance Industrie Haute Technologie Clos-DonrouxC.P.2281870 Monthey 1Switzerland ITM Power Altas way 22SheffieldS47QQUK Foundation for the Development of New Hydrogen Technologies in Aragon Ctra.N-330akm.56622197 HuescaSpain NEL Department of Hydrogen ElectrolyserP.O.Box 24NO-3671 NotoddenNorway

Electrolysers,which convert electricity into hydrogen,have the potential to offer a variety of electrical-grid services,therefore facilitating the integration of intermittent renewables into electrical *** various activities that aim to unlock this hidden value,the 3-year European Union project QualyGridS launched in 2017 aims to establish standardized testing protocols for electrolysers to perform electricity-grid *** paper shares experience and intermediate results of QualyGridS with respect to the testing protocols,test benches and testing *** results of this work facilitate mutual understanding between the electricity industry and the hydrogen industry,support further development of the cross-sector testing standards,guide the design and selection of grid-service-oriented electrolyser applications and foster the transition towards a fossil-free-energy future based on high shares of hydrogen and other renewable solutions.

关键词： electrolyser hydrogen electrical-grid service QualyGridS test bench testing protocols

来源：

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

Cyclist Warning Systems: Design and Evaluation

引用

Journal of transportation Technologies 2022年第3期12卷 388-406页

作者： Sandra trösterer Matthias Maurer Paolo Pretto Gernot Pucher Manfred Rosenberger Virtual Vehicle Research GmbH Graz Austria trafficon—traffic Consultants GmbH Wien Austria

Cyclists belong to the group of vulnerable road users and, thus, need particular protection in road traffic. One way to enhance cyclists’ safety is to use urban data (e.g., infrastructure data, accident statistics) to inform cyclists about potentially dangerous areas, allowing them to better adjust to the situation and elevate their self-protection. However, the question is how to inform cyclists about such dangerous areas. In this paper, we present the results of two field studies, investigating two wearables (headphones vs. smart glasses) and different signal options to inform cyclists about dangerous areas. Study participants were cycling along a predefined track and could experience the different wearables and signals. The main aim of the studies was to find out how cyclists perceive and experience the different approaches. Participants’ impressions were captured with questionnaires and interviews. Our results show a clear preference of the headphones over the smart glasses and signaling with intermittent audio while being in the dangerous area. However, we also found that participants’ acceptance of the approach was influenced by the additional perceived benefit the respective wearable would have in daily life. Using a wearable solely to be warned, although this would increase safety, was less acceptable. We discuss the implications of these findings for the design of cyclist warning systems.

关键词： Cycling Safety Wearables Design Evaluation Field Studies

来源：

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

Tuning of surface plasmon resonances by preparation of silver/gold core- shell and alloy nanoparticles.

Tuning of surface plasmon resonances by preparation of silve...

引用

Ⅻ International Symposium on Small Particles and Inorganic Clusters

作者： Frank Hubenthal Torsten Ziegler Christian Hendrich Frank trger Institut für Physik and Center for Interdisciplinary Nanostructure Science Technology-CINSaT Universitt KasselHeinrich-Plett-Str.4034132 KasselGermany

The optical properties of metal nanoparticles have been investigated quite extensively in the past. In particular, the field enhancement, which is associated with surface plasmon excitation has found special interest, because it is exploited in processes like surface-enhanced Raman scattering or enhanced fluorescence. For optimum interaction with a given wavelength, tailor-made nanoparticles of a certain size or shape are needed. This alone, however, does not nec-

关键词：

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

400 μm stripe lasers for high-power fiber coupled pump modules

引用

High Power Laser Science and Engineering 2013年第1期1卷 60-67页

作者： Ren Platz Gtz Erbert Wolfgang Pittroff Moritz Malchus Klaus Vogel Gnther trnkle Ferdinand-Braun-Institut Leibniz-Institut fr Hchstfrequenztechnik Gustav-Kirchhoff-Stra e 412489 BerlinGermany University of Applied Sciences Munich Lothstra e 34 80335 MunichGermany

We present a 940 nm quasi-continuous wave semiconductor laser designed as a building block for high-power fiber coupled pump *** laser comprises a 400μm narrow-stripe array mounted on an aluminum nitride substrate using hard *** chip has been optimized for high optical power and low lateral far-field *** vertical and six lateral structure variations have been investigated to determine the best achievable *** at 1 ms pulse width and a repetition rate of 10 Hz,the laser device reaches a maximum pulse power of 86 W from a 400μm aperture and more than 62%maximum conversion *** lateral far-field angles(95%power enclosed)of11.5 and 13.5,depending on the epitaxial design,enable efficient multimode fiber *** potential for highly reliable applications has been demonstrated.

关键词： diode laser high-power laser array optical fiber coupling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

超声和臭氧控制生物垢生长的研究

引用

水处理技术 1999年第1期25卷 30-33页

作者：刘天庆 Bott.,tr 大连理工大学化工学院

循环冷却水系统中的生物垢是各类工业过程中的一个严重问题，为控制生物垢的生长，已经开发了若干种技术方法。本文采用超声与臭氧处理相结合的方法对模拟冷却水系统中的生物垢进行了控制其生长的实验研究。结果表明这种处理方法可以使... 详细信息

循环冷却水系统中的生物垢是各类工业过程中的一个严重问题，为控制生物垢的生长，已经开发了若干种技术方法。本文采用超声与臭氧处理相结合的方法对模拟冷却水系统中的生物垢进行了控制其生长的实验研究。结果表明这种处理方法可以使管壁面上的生物垢得到很好的控制。

关键词：超声臭氧生物垢生长控制除垢

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fanconi贫血——体质性再生障碍性贫血

引用

国外医学（输血及血液学分册） 1992年第1期15卷 35-36页

作者： Gordon-Smith EC Rutheriod tr 申玉良

Fanconi 贫血(FA)表现为全血细胞减少伴骨髓增生低下及多种先天性畸形。其病理特征是自发性染色体断裂增加及对多种染色体断裂因子敏感。FA 的临床表现(1)外貌异常:FA 常见身材矮小、小头畸形、小眼球及小嘴。(2)皮肤色素沉着:FA 约60-... 详细信息

Fanconi 贫血(FA)表现为全血细胞减少伴骨髓增生低下及多种先天性畸形。其病理特征是自发性染色体断裂增加及对多种染色体断裂因子敏感。FA 的临床表现(1)外貌异常:FA 常见身材矮小、小头畸形、小眼球及小嘴。(2)皮肤色素沉着:FA 约60-80%有皮肤色素异常沉着,其典型表现为褐色素沉着斑。(3)骨骼畸形:本病易累及挠骨线,常有拇指缺失、发育不全或异位,亦可见多指畸形。挠骨可单侧或双侧缺失伴同侧拇指缺失。(4)肾脏畸形:可见肾发育不全、马蹄肾或盆腔异位,可反复发作尿路感染和肾积水。(5)血液学异常:出生时血细胞可正常或接近正常。全血细胞减少常在5—10岁时发生,从出现全血细胞减少到死亡的中位生存期约5年。骨髓象呈进行性再生低下。克隆分析表明。

关键词： Fanconi贫血再生障碍性贫血

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

聚乙烯管的压力测试方法

引用

化工新型材料 2004年第5期32卷 56-58页

作者： ASTM D2837,ISO tr 9080

以测量压力管使用寿命为目的的压力测试系统可以在内部压力下测量出压力管的长期性能.测试方法有两种:一种为ASTM D2837(Standard TestMethod for Obtaining Hydrostatic Design Basis forThermoplastic Pipe Materials),另外一种为ISO tr9080 (Thermoplastics Pipes for the transport ofFluids-Methods of Extrapolation of HydrostaticStress Rupture Data to Determine the Long-TermHydrostatic Strength of Thermoplastic Pipe Mate-rials)等.在本文中将简单介绍采用这两种测试方法所得的基本数据、计算过程及根据结果来评价测试管等级等方面.

关键词：聚乙烯管压力测试方法使用寿命应力曲线温度

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：