检索结果-南通市图书馆

环球市场信息导报 2003年第21期 64-65页

作者： 3see

近年来，针对儿童消费的产品品种越来越多，花样翻新越来越快，功能越来越复杂，儿童消费市场表面上是一片繁荣，但是，消费者对此却似乎并不满意，一项调查显示，对目前儿童消费市场状况较为满意的消费者还不到10％，而回答不满意的竞... 详细信息

近年来，针对儿童消费的产品品种越来越多，花样翻新越来越快，功能越来越复杂，儿童消费市场表面上是一片繁荣，但是，消费者对此却似乎并不满意，一项调查显示，对目前儿童消费市场状况较为满意的消费者还不到10％，而回答不满意的竞占到了60％以上。

关键词：儿童消费市场消费者不满意产品品种中国状况复杂调查表面显示

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

2001年电信行业IT产品应用及市场分析

中国电子商务 2001年第23期 56-59页

作者： 3see网站 3see网站友情

从2001年电信运营整体市场来看,电信运营企业市场化转型加快,业务开发能力明显提高,从而为行业的持续快速健康发展创造了良好的环境与条件.到2001年8月份,中国通信固定资产投资已完成1182亿元,比上年同期增长66%,通信业务收入完成2551亿... 详细信息

从2001年电信运营整体市场来看,电信运营企业市场化转型加快,业务开发能力明显提高,从而为行业的持续快速健康发展创造了良好的环境与条件.到2001年8月份,中国通信固定资产投资已完成1182亿元,比上年同期增长66%,通信业务收入完成2551亿元,同比增长15%.目前,中国电话用户总数达到了近3亿户,今年新增电话用户5796万户,月均增加828万户.

关键词：电信行业 IT产品市场分析 2001年

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

消费者买药也看品牌 B03

深圳商报

作者： 3see

【本报讯】消费者自行购买医药主要是非处方药（OTC），而在世界范围内，OTC药占整个药品市场的份额约为15％（欧洲占25~30％），但对各个国家其比例差别很大。消费者在购买OTC药物，越来越多地受到产品品牌影响。下图反映出2002年部分...

【本报讯】消费者自行购买医药主要是非处方药（OTC），而在世界范围内，OTC药占整个药品市场的份额约为15％（欧洲占25~30％），但对各个国家其比例差别很大。消费者在购买OTC药物，越来越多地受到产品品牌影响。下图反映出2002年部分国家通用名药使用的比例：（德国、荷?

关键词：

来源： cnki报纸评论

在线全文

cnki报纸

学校读者我要写书评

暂无评论

CEO眼中的CIO B07

深圳商报

作者： 3see

【本报讯】一个合格的企业信息管理师（CIO）该具备哪些知识，哪些能力？企业的CEO对他们有什么期待？中国人民大学信息学院副教授左美云等人的调查报告向我们提供了一些数据。“知识”储备不可少一个合格的CIO应该具有哪些知识储备呢...

【本报讯】一个合格的企业信息管理师（CIO）该具备哪些知识，哪些能力？企业的CEO对他们有什么期待？中国人民大学信息学院副教授左美云等人的调查报告向我们提供了一些数据。“知识”储备不可少一个合格的CIO应该具有哪些知识储备呢？调查显示，对于CIO所应具备的知识?

关键词：

来源： cnki报纸评论

在线全文

cnki报纸

学校读者我要写书评

暂无评论

国产动画片市场亟待振兴 B04

Metformin-associated lactic acidosis:A mini review of pathophysiology,diagnosis and management in critically ill patients

深圳商报

作者： 3see供稿

【本报讯】中国社科院和上海社科研究基金专门拨款立项，委托复旦大学进行了青少年动画受众调研，为动画产业创意把脉，为提高质量提供市场坐标。调查显示，我国青少年对日本动画片情有独钟，日产动画片占据着我国的主要动画消费人群；...

【本报讯】中国社科院和上海社科研究基金专门拨款立项，委托复旦大学进行了青少年动画受众调研，为动画产业创意把脉，为提高质量提供市场坐标。调查显示，我国青少年对日本动画片情有独钟，日产动画片占据着我国的主要动画消费人群；国产动画片市场亟待振兴。本次调查?

关键词：

来源： cnki报纸评论

在线全文

cnki报纸

学校读者我要写书评

暂无评论

World Journal of Diabetes 2024年第6期15卷 1178-1186页

作者： Kay Choong see Department of Medicine National University HospitalSingapore 119228Singapore

Metformin is a common diabetes drug that may reduce lactate clearance by inhibiting mitochondrial oxidative phosphorylation,leading to metforminassociated lactic acidosis(MALA).As diabetes mellitus is a common chronic metabolic condition found in critically ill patients,pre-existing metformin use can often be found in critically ill patients admitted to the intensive care unit or the high dependency *** aim of this narrative mini review is therefore to update clinicians about MALA,and to provide a practical approach to its diagnosis and *** in critically ill patients may be suspected in a patient who has received metformin and who has a high anion gap metabolic acidosis,and confirmed when lactate exceeds 5 mmol/*** factors include those that reduce renal elimination of metformin(renal impairment from any cause,histamine-2 receptor antagonists,ribociclib)and excessive alcohol consumption(as ethanol oxidation consumes nicotinamide adenine dinucleotides that are also required for lactate metabolism).Treatment of MALA involves immediate cessation of metformin,supportive management,treating other concurrent causes of lactic acidosis like sepsis,and treating any coexisting diabetic *** MALA requires extracorporeal removal of metformin with either intermittent hemodialysis or continuous kidney replacement *** optimal time to restart metformin has not been *** is nonetheless reasonable to first ensure that lactic acidosis has resolved,and then recheck the kidney function post-recovery from critical illness,ensuring that the estimated glomerular filtration rate is 30 mL/min/1.73 m^(2) or better before restarting metformin.

关键词： Acid-base equilibrium Biguanides Oxidative phosphorylation Pyruvic acid Renal replacement therapy

Mitigation of Deane and Hamill phenomenon in gallium nitride high-voltage power supply for electric propulsion system application

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Voltage 2024年第1期9卷 252-265页

作者： Minghai Dong Hui Li Shan Yin Kye Yak see Yingzhe Wu Xiong Xin School of Aeronautics&Astronautics University of Electronic Science and Technology of ChinaChengduChina School of Electrical&Electronic Engineering Nanyang Technological UniversitySingaporeSingapore School of Automation Engineering University of Electronic Science and Technology of ChinaChengduChina Innoscience(Shenzhen)Semiconductor Co.Ltd. ShenzhenChina

The step-up resonant converters are widely adopted to provide high voltage in kV-level for electric propulsion system due to their high efficiency,low mass,modularisation,and high-power *** bipolar Cockcroft-Walton voltage multiplier(BiCWVM)is a major circuit that steps up the voltage in the resonant ***,the diode nonlinearity in BiCWVM can introduce self-sustained quasi-periodic oscillations in the voltage and current waveforms,which is commonly known as the Deane and Hamill(DH)*** oscillation can lead to higher magnetic loss and control failure,and it is more likely to present in the gallium nitride-based converter due to the highfrequency *** authors aim to investigate and mitigate the DH phenomenon systematically so that proper mitigation can be *** facilitate the investigation,the circuit before the BiCWVM in the converter is derived and modelled as a voltage source v_(m)and a series inductor L_(sy).Also,the reverse recovery process of the diode in the BiCWVM can be represented by a piecewise-linear(PWL)model,with the simplified circuit and PWL model,the relationship between voltage and current under different operating conditions can be determined with *** relationship allows to understand the mechanism of diode reverse recovery in BiCWVM that leads to DH ***,a hybrid-/full-silicon carbide(SiC)design is proposed to mitigate the DH phenomenon,which is verified experimentally for a 300-kHz,5-W,20-V/1.5-kV GaN-based step-up resonant converter.

关键词： power resonant high

Stable,intense supercontinuum light generation at 1 kHz by electric field assisted femtosecond laser filamentation in air

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第2期13卷 354-365页

作者： Yaoxiang Liu Fukang Yin Tie-Jun Wang Yuxin Leng Ruxin Li Zhizhan Xu see Leang Chin State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics and CAS Center for Excellence in Ultra-intense Laser ScienceChinese Academy of SciencesShanghaiChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina Centre d’Optique Photonique et Laser(COPL)and Département de physiquede génie physique et d’optiqueUniversitéLavalQuébecQuébecCanada

Supercontinuum(SC)light source has advanced ultrafast laser spectroscopy in condensed matter science,biology,physics,and *** to the frequently used photonic crystal fibers and bulk materials,femtosecond laser filamentation in gases is damage-immune for supercontinuum generation.A bottleneck problem is the strong jitters from filament induced self-heating at kHz repetition rate *** demonstrated stable kHz supercontinuum generation directly in air with multiple mJ level pulse *** was achieved by applying an external DC electric field to the air plasma *** pointing jitters of the 1 kHz air filament induced SC light were reduced by more than 2 *** stabilized high repetition rate laser filament offers the opportunity for stable intense SC generation and its applications in air.

关键词： intense repetition light

Diagnosis and management of severe pulmonary and extrapulmonary tuberculosis in critically ill patients:A mini review for clinicians

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Critical Care Medicine 2024年第2期13卷 106-115页

作者： Dominic Ti Ming Tan Kay Choong see Department of Medicine National University HospitalSingapore 119228Singapore

Among critically ill patients,severe pulmonary and extrapulmonary tuberculosis has high morbidity and ***,it is a diagnostic challenge given its nonspecific clinical symptoms and signs in early stages of the *** addition,management of severe pulmonary and extrapulmonary tuberculosis is complicated given the high risk of drug-drug interactions,drug-disease interactions,and adverse drug *** help clinicians acquire an up-to-date approach to severe tuberculosis,this paper will provide a narrative review of contemporary diagnosis and management of severe pulmonary and extrapulmonary tuberculosis in critically ill patients.

关键词： Tuberculosis Severe tuberculosis Mycobaterium tuberculosis Critical care Intensive care Diagnosis of tuberculosis Management of tuberculosis

Lightning in a Forest (Wild) Fire: Mechanism at the Molecular Level

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Atmospheric and Climate Sciences 2024年第1期14卷 128-135页

作者： see Leang Chin Xueliang Guo Harmut Schroeder Huanbin Xu Tie-Jun Wang Ruxin Li Weiwei Liu Department of Physics and Center for Optics Photonics and Lasers (COPL) Laval University Quebec Canada Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Max Planck Institute of Quantum Optics Garching Germany State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai China Institute of Modern Optics Nankai University Tianjin China

The mechanism of lightning that ignites a forest fire and the lightning that occurs above a forest fire are explained at the molecular level. It is based on two phenomena, namely, internal charge separation inside the atmospheric cloud particles and the existence of a layer of positively charged hydrogen atoms sticking out of the surface of the liquid layer of water on the surface of rimers. Strong turbulence-driven collisions of the ice particles and water droplets with the rimers give rise to breakups of the ice particles and water droplets into positively and negatively charged fragments leading to charge separation. Hot weather in a forest contributes to the updraft of hot and humid air, which follows the same physical/chemical processes of normal lightning proposed and explained recently[1]. Lightning would have a high probability of lighting up and burning the dry biological materials in the ground of the forest, leading to a forest (wild) fire. The burning of trees and other plants would release a lot of heat and moisture together with a lot of smoke particles (aerosols) becoming a strong updraft. The condition for creating lightning is again satisfied which would result in further lightning high above the forest wild fire.

关键词： Forest Wild Fire Lightning Molecular Level