All-optical switching and nonlinear optical properties of HBT in ethanol solution

This paper demonstrates an all-optical switching model system comprising a single pulsed pump beam at 355 nm and a CW He-Ne signal beam at 632.8 nm with 2-（2＇-hydroxyphenyl）benzothiazole （HBT） in ethanol solution. The origins of the optical switching effect were discussed. By the study of nonlinear optical properties for HBT in ethanol solvent, this paper verified that the excited-state intramolecular proton transfer （ESIPT） effect of HBT and the thermal effect of solvent worked on quite different time scales and together induced the change of the refractive index of HBT solution, leading to the signal beam deflection. The results indicated that the HBT molecule could be an excellent candidate for high-speed and high-sensitive optical switching devices.

Highly reliable bipolar resistive switching in sol-gel derived lanthanum-doped PbTiO_3 thin film: Coupling with ferroelectricity?

Nanoscale PbxLa1-,Ti1-x/4O3 （PLT） thin film has been fabricated on Pt／Ti／SiO2／Si substrates by chemical solution deposition （CSD） method. Ferroelectricity of the fresh-made PLT thin film has been clearly detected through piezoelectric force microscopy （PFM） by writing reversible ferroelectric domains. However, PLT thin film also shows off-standard ferroelectric hysteresis loops highly dependent on frequency, indicating large amount of mobile space charges in the film. Subsequent current-voltage （C-V） studies show that sandwich-like Pt／PLT／Pt structure exhibits notable bipolar resistive switching （BRS） characteristics with high stability （〉 103 switching cycles）. It is found that the C-V curves of both high- and low-resistance states have the feature of space-charge-limited current （SCLC） conduction, indicating important roles of defects in the conduction. X-ray photoelectron spectroscopy measurement further verifies that oxygen vacancies based conductive filament mechanism is likely responsible for the observed RS effect. Our demonstration of stable RS effect in the PLT thin film and its possible coupling with ferroelectricity is promising in device development and applications, such as development of ferroelectric-tunable RS memories.

Improvement on Switching Characteristics and Switching Losses of IGBT by ZVS-PWM

Absrtact: The principle of ZVS - PWM inverting circuit is first described by means of inverting welder supply. The contrastive study is made on switching characte -ristics and switching losses of IGBT between ZVS - PWM and hard - switching.

A reusable planar triggered spark-gap switch batched-fabricated with PCB technology for medium- and low-voltage pulse power systems

Triggered spark-gap switch is a popular discharge switch for pulse power systems.Previous studies have focused on planarizing this switch using thin film techniques in order to meet the requirements of compact size in the systems.Such switches are one-shot due to electrodes being too thin to sufficiently resist spark-erosion.Additionally,these switches did not employ any structures in securing internal gas composition,resulting in inconsistent performance under harsh atmospheres.In this work,a novel planar triggered spark-gap switch(PTS)with a hermetically sealed cavity was batched-prepared with printed circuit board(PCB)technology,to achieve reusability with low cost.The proposed PTS was inspected by micro-computed tomography to ensure PCB techniques meet the requirements of machining precision.The results from electrical experiments demonstrated that PCB PTS were consistent and reusable with lifespan over 20 times.The calculated switch voltage and circuit current were consistent with those derived from real-world measurements.Finally,PCB PTS was used to introduce hexanitrostilbene(HNS)pellets in a pulse power system to verify its performance.

Editorial Board 2011-2015

The World Journal of Gastrointestinal Oncology Editorial Board consists of 428 members,representing a team of worldwide experts in gastrointestinal oncology.They are from 40 countries,including Argentina(2),Australia(10),Belgium(5),Brazil(2),Canada(4),Chile(2),China(56),Czech Republic(1),Denmark(1),Finland(3),France(7),Germany(24),Greece(13),Hungary(2),India(9),Iran(2),Ireland(2),Israel(4),Italy(41),Japan(47)。

Editorial Board 2011-2015

The World Journal of Gastrointestinal Oncology Editorial Board consists of 428 members,representing a team of worldwide experts in gastrointestinal oncology.They are from 40 countries,including Argentina(2),Australia(10),Belgium(5),Brazil(2),Canada(4),Chile(2),China(56),Czech Republic(1),Denmark(1),Finland(3),France(7),Germany(24),Greece(13),Hungary(2),India(9),Iran(2),Ireland(2),Israel(4),Italy(41),Japan(47),Kuwait(2),Mexico(1),Netherlands(7),New Zealand(2),Norway(1),Poland(3),Portugal(5),Romania(1),Saudi Arabia(1),Serbia(2),Singapore(4),South Korea(27),Spain(10),Sweden(5),Switzerland(2),Syria(1),Thailand(1),Turkey(6),United Kingdom(15),and United States(95).

Editorial Board 2009-2013

The World Journal of Gastrointestinal Oncology Editorial Board consists of 404 members,representing a team of worldwide experts in gastrointestinal oncology.They are from 41 countries,including Argentina(1),Australia(9),

Editorial Board 2011-2015

The World Journal of Gastrointestinal Oncology Editorial Board consists of 428 members,representing a team of worldwide experts in gastrointestinal oncology.They are from 40 countries,including Argentina(2),Australia(10),Belgium(5),Brazil(2),Canada(4),Chile(2),China(56),Czech Republic(1),Denmark(1),Finland(3)。

Editorial Board 2010-2015

The World Journal of Diabetes Editorial Board consists of 323 members, representing a team of worldwide experts in diabetes mellitus. They are from 38 countries, including Argentina (1), Australia (13), Austria (6), Belgium (1), Brazil (3), Canada (14), China (21), Czech Republic (3), Denmark (9), Egypt (2), Finland (3), France (5), Germany (17), Greece (10), Hungary (2), India (10), Ireland (2), Iran (2), Israel (5), Italy (25)

Editorial Board 2014-2017

The World Journal of Radiology Editorial Board consists of 365 members,representing a team of worldwide experts in radiology.They are from 36 countries,including Afghanistan(1),Argentina(2),Australia(5),Austria(7),Belgium(2),Brazil(8),Canada(6),Chile(1),China(43),Croatia(1),Denmark(4),Egypt(6),France(5),Germany(22)。

Editorial Board 2011-2015

The World Journal of Diabetes Editorial Board now consists of 713 members,representing a team of worldwide experts in diabetes mellitus.They are from 56 countries,including Argentina(2),Australia(27),Austria(11),

Editorial Board 2010-2015

The World Journal of Diabetes Editorial Board consists of 323 members, representing a team of worldwide experts in diabetes mellitus. They are from 38 countries, including Argentina (1), Australia (13), Austria (6), Belgium (1),

Editorial Board 2009-2013

The World Journal of Radiology Editorial Board consists of 319 members,representing a team of worldwide experts in radiology.They are from 40 countries,including Australia(3),Austria(4),Belgium(5),Brazil(3),Canada(9),Chile(1),China(25),Czech(1),Denmark(1),Egypt(4),Estonia(1),Finland(1),France(6),Germany(17),Greece(8),Hungary(1),India(9),Iran(5),Ireland(1),Israel(4),Italy(28),Japan(14),Lebanon(1),Libya(1),Malaysia(2),

World Journal of Gastroenterology~ Brief Introduction of Editorial Board 2004-2006

The World Journal of Gastroenterology Editorial Board consists of 685members,representing a team of worldwide experts in gastroenterologyand hepatology.They are from 52 countries including:Albania(1),Argentina(1),Australia(16).Austria(7),Belarus(1),Belgium(11),Brazil(1),Bulgaria(1),Canada(10),China(58),Croatia(2),Czech(1),Denmark(5),Egypt(3),Finland(1),France(27).Germany(71),Greece(1),Hungary(1).Iceland(1),India(6),Iran(2),Ireland(2),Israel(5),Italy(51),Japan(137),Lebanon(2),Lithuania(1),Macedonia(1),Malaysia(3),Mexico(2),Monaco(1),Netherlands(15),New Zealand(1),Nigeria(1),Norway(2),Pakistan(1),Poland(6),Portugal(1),Russia(3),Singapore(3),Slovakia(1),South Africa(1),South Korea(9),Spain(27),Sweden(6),Switzerland(8),Turkey(7),United Arab Emirates(1),United Kingdom(37).United States(121),Yugoslavia(1).

Editorial Board 2011-2015

The World Journal of Gastrointestinal Pathophysiology Editorial Board consists of 523 members,representing a team of worldwide experts in gastrointestinal pathophysiology.They are from 45 countries,including Argentina(2),Australia(14),Austria(3),Belgium(9),Brazil(10),Brunei Darussalam(1),Canada(20),China(30),Croatia(1),Czech Republic(2),Denmark(4),Egypt(1),Estonia(1),Finland(1),France(8),Germany(22),Greece(7)。

World Journal of Gastroenterology A Brief Introduction of Editorial Board Members 2004-2006

The World Journal of Gastroenterology Editorial Board consistsof 174 members,representing a team of worldwide experts ingastroenterology and hepatology.They are from 53 countriesincluding:Albania(1),Algeria(1),Argentina(2),Austria(1),Belarus(1),Belgium(1),Brazil(1),Bulgaria(1),Canada(1),China(40),Costa Rica(1),Croatia(1),Denmark(1),Egypt(1),Finland(1),France(1),Germany(7),Greece(1),Hungary(2),Iceland(1),India(2),Iran(1),Ireland(2),Israel(2),Italy(2),Japan(3),Latvia(1),Lithuania(1),Macedonia(1),Malaysia(2),Monaco(1),Netherlands(3),New Zealand(1),Pakistan(1),Philippines(1),Poland(2),Portugal(1),Romania(1),Russia(3),Singapore(1),SIovakia(1),Slovenia(2),South Africa(1),South Korea(2),Spain(1),Sri Lanka(1),Sweden(2),Switzerland(2),Thailand(1),Turkey(1),United Kingdom(6),United States(53),and Yugoslavia(1).

WSE International Academic Workshop and 3^(rd)Editorial Board Conference(June 21-22,2014)

Background To enhance worldwide academic communication between researchers engaging in water science and water engineering, and to promote communication between WSE Editorial Board members, Hohai University will hold the WSE International Academic Workshop and 3rd Editorial Board Conference on June 21-22, 2014, at Hohai University in China. The workshop welcomes international experts and scholars in the fields of water science and water engineering and WSE Editorial Board members.

World Journal of Gastroentero1ogy Editorial Board and Reviewers Brief Introduction 2004-2006

Published by The WJG Press and Elsevier Inc．,PO Box 23451 Beijing 100023,China Fax:+86-(0)10-85381893 E-mail:wjg@wjgnet．com http://www．wjgnet．com The World Journal of Gastroenterology Editorial Board consists of 519 members,representing a team of worldwide experts in gastroenterology and hepatology．They are from 51 countries,including Albania(1),Algeria(1),Argentina(1),Australia(8), Austria(5),Belarus(1),Belgium(6),Brazil(1),Bulgaria(1),Canada(7),China(50),Costa Rica(1),Croatia(1),Denmark(6), Egypt(1),Finland(1),France(18),Germany(35),Greece(2),Hungary(2),Iceland(1),India(5),Iran(1),Ireland(1),Israel(2),Italy(41),Japan(132),Lithuania(1),Macedonia(1),Malaysia(3),Monaco(1),Netherlands(13),Norway(2),Pakistan(1),Philippines(1),Poland(2),Portugal(1),Russia(3),Singapore(2),Slovakia(1),South Africa(2),South Korea(6),Spain(20), Sri Lanka(1),Swaziland(1),Sweden(4),Switzerland(4),Turkey(3),United Kingdom(20),United States(90),Yugoslavia(1)． HONORARY EDITORS-IN-CHIEF Ke-Ji Chen,Professor Xiyuan Hospital,Chinese Tranditional Medicine University,Beijing 100091,China. kjchen@public．bta．net．

Output Feedback Controller Design for Discrete-time Switched Singular Systems

This paper is concerned with the problems of robust admissibility and static output feedback( SOF)stabilization for a class of discrete-time switched singular systems with norm-bounded parametric uncertainties.The objective is to design a suitable robust SOF controller guaranteeing the regularity,causality and asymptotic stability of the resulting closed-loop system under arbitrary switching laws. Based on the basic matrix inequality sufficient condition for checking the admissibility of switched singular systems,together with some matrix inequality convexifying techniques,the SOF controller synthesis is developed for the underlying systems. It is shown that the controller gains can be obtained by solving a set of strict linear matrix inequalities( LMIs). A simulation example is given to show the effectiveness of the proposed method.

Room Temperature Phosphorescence pH Switch Based on Photo-induced Electron Transfer

In this paper, photoinduced electron transfer(PET) phosphoroionophore, N-(1-bromo- 2-naphthylmethyl)-diethanolamine (BND) was synthesized and its phosphorescent characteristics were studied. The experimental results showed that strong phosphorescence could be observed in b-cyclodextrin aqueous solution only at low pH value. This system combined AND and NOT function to produce a three-input inhibit (INH) logic gate.