检索结果-南通市图书馆

ANISOTROPY OF ELASTIC PROPERTIES AND CENTRAL PEAK BEHAVIORS OF UNIAXIAL STRONTIUM BARIUM NIOBATE RELAXOR SINGLE CRYSTALS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Advanced Dielectrics 2011年第1期1卷 91-97页

作者： JAE-HYEON KO TAE HYUN KIM seiji kojima KI-SOO LIM TAE-YEONG KOO Department of Physics Hallym University Hallymdaehakgil 39ChuncheonGangwondo 200-702 Republic of Korea Institute of Materials Science University of Tsukuba Tsukuba Ibaraki 305-8573Japan Department of Physics Chungbuk National University Cheongju 361-763Republic of Korea Pohang Accelerator Laboratory Pohang University of Science and Technology Pohang 790-784 Republic of Korea

The elastic properties of strontium barium niobate single crystals with different strontium content were *** elastic constant and the related hypersonic attenuation showed substantially different values depending on the propagating direction of acoustic *** elastic anisotropy was explained based on the uniaxial nature of the order parameter and the diffuse ferroelectric phase transition in this tetragonal *** observation was correlated with the appearance of strongly polarized central peaks,which reffects strong polarization fluctuations along the uniaxial polar direction.

关键词： Strontium barium niobate SBN elastic constant central peak Brillouin scattering

Prediction and experimental verification of tether net entanglement for space debris capture

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Astrodynamics 2024年第2期8卷 223-236页

作者： Kaito Kosuge Hirohisa kojima Department of Aeronautics and Astronautics Tokyo Metropolitan UniversityAsahigaoka 6-6HinoTokyo 191-0065Japan

This study involved simulations and experiments aimed at assessing the efficacy of a tether net in encapsulating space *** tether net was modeled as a spring–mass–damper system considering the influence of aerodynamic and gravitational forces and the occurrence of debris *** examine the influence of collision position and size disparity between the debris and the net on debris capture status,the entanglement nodes of the net were *** were conducted to evaluate the wrapping capabilities of the tether net,focusing specifically on debris ***,the results were compared with those of the numerical *** the experiments,radio frequency identification was used to identify the entanglement points of the tether *** studies have indicated that the ideal collision point for capturing debris using a tether net with the debris intended to be captured is located at the center of the ***,the experimental results of this study revealed that a collision position that is slightly shifted from the center of the tether net is more advantageous for capturing debris in terms of tether net entanglement.

关键词： space debris tether net entanglement debris capture active debris removal(ADR)

Drug-induced mucosal alterations observed during esophagogastroduodenoscopy

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 Gastroenterology 2024年第16期30卷 2220-2232页

作者： Masaya Iwamuro seiji Kawano Motoyuki Otsuka Department of Gastroenterology and Hepatology Okayama University Graduate School of MedicineDentistryand Pharmaceutical SciencesOkayama 700-8558Japan

Several features of drug-induced mucosal alterations have been observed in the upper gastrointestinal tract,i.e.,the esophagus,stomach,and *** include pill-induced esophagitis,desquamative esophagitis,worsening of gastroesophageal reflux,chemotherapy-induced esophagitis,proton pump inhibitor-induced gastric mucosal changes,medication-induced gastric erosions and ulcers,pseudomelanosis of the stomach,olmesartan-related gastric mucosal inflammation,lanthanum deposition in the stomach,zinc acetate hydrate tabletinduced gastric ulcer,immune-related adverse event gastritis,olmesartan-associated sprue-like enteropathy,pseudomelanosis of the duodenum,and lanthanum deposition in the *** endoscopists,acquiring accurate knowledge regarding these diverse drug-induced mucosal alterations is crucial not only for the correct diagnosis of these lesions but also for differential diag-nosis of other *** minireview aims to provide essential information on druginduced mucosal alterations observed on esophagogastroduodenoscopy,along with representative endoscopic images.

关键词： Diagnosis Esophagogastroduodenoscopy Non-neoplastic lesions Esophageal lesions Gastric lesions Duodenal lesions

A plant growth chamber system equipped with aerosol generators for studying aerosol-vegetation interactions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2024年第2期85卷 122-132页

作者： Masao Gen seiji Ikawa Masahiro Yamaguchi Fong Zyin Lim Takeshi Izuta I.Wuled Lenggoro Graduate School of Bio-Applications and Systems Engineering Tokyo University of Agriculture and TechnologyKoganeiTokyo184-8588Japan Institute of Multidisciplinary Research for Advanced Materials Tohoku UniversitySendai980-8577Japan Faculty of Agriculture Tokyo University of Agriculture and TechnologyFuchuTokyo183-8509Japan Graduate School of Fisheries and Environmental Sciences Nagasaki UniversityNagasaki852-8521Japan Institute of Agriculture Tokyo University of Agriculture and TechnologyFuchuTokyo183-8509 Japan Department of Applied Physics and Chemical Engineering Tokyo University of Agriculture and TechnologyKoganeiTokyo184-8588Japan Institute of Global Innovation Research Tokyo University of Agriculture and TechnologyFuchuTokyo183-8509Japan

Understanding aerosol-vegetation interactions is vital in ***,the interactions remain elusive partly due to the lack of suitable plant growth chamber ***,deposition of submicron particles on leaf surfaces is challenging due to its low deposition velocities compared to larger *** this work,we present a plant-growth chamber that was used to study the effect of sub-micron black carbon(BC)particles on the growth and photosynthesis of *** chamber system simultaneously enables the growth of multiple plants in pots and the deposition of submicron particles onto *** spraying methods assisted by ultrasonic and electrostatic forces were employed as aerosol generators to realize the particle *** flow regime inside the chamber was numeri-cally calculated to predict the transportation of aerosol particles,suggesting the optimal operating conditions of the *** gas-phase particle size distribution measurements showed that gener-ated BC particles were suspended in submicron diameter *** aerosol generators were examined in the chamber using three conductor and insulator substrates as a model of plant *** observations and spectroscopic analysis ascertained that submicron BC particles generated from our generators were deposited on all substrate *** the developed chamber system,systematic studies can be performed to advance the fundamental understanding of aerosol-vegetation interactions.

关键词： Aerosol Exposure chamber Spray drying Black carbon

KNbO3和NaNbO3的原位高压拉曼散射与同步辐射X射线衍射研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

KNbO3和NaNbO3的原位高压拉曼散射与同步辐射X射线衍射研究

PRECURSOR DYNAMICS OF Pb(B_(1/2)B0_(1/2))O_(3)-TYPE RELAXOR FERROELECTRICS STUDIED BY BROADBAND MICRO-BRILLOUIN SCATTERING

第二十届全国光散射学术会议（CNCLS20）

作者：艾尼瓦尔·吾术尔鲁雅荣 seiji kojima 艾尼瓦尔·吾术尔新疆大学物理科学与技术学院筑波大学应用科学研究院

采用原位高压拉曼散射与同步辐射X射线衍射技术研究了KNbO (KNO)和NaNbO3(NNO)的压力诱导结构相变机制。对NNO的研究压力达到了32 GPa,NNO分别在2、7、9和18 GPa附近发生结构相变,相变序列为Pbma→HP-I,HP-I→HP-II,HP-II→Pbnm和Pbnm→...

采用原位高压拉曼散射与同步辐射X射线衍射技术研究了KNbO (KNO)和NaNbO3(NNO)的压力诱导结构相变机制。对NNO的研究压力达到了32 GPa,NNO分别在2、7、9和18 GPa附近发生结构相变,相变序列为Pbma→HP-I,HP-I→HP-II,HP-II→Pbnm和Pbnm→HP-IV。HP-IV相的结构保持稳定到32 GPa,没有相变成立方相,Tc温度至少以dT/dP

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

Journal of Advanced Dielectrics 2012年第2期2卷 74-84页

作者： seiji kojima MUHTAR AHART VENKATASUBRAMANIAN SIVASUBRAMANIAN ALEXEI.A.BOKOV ZUO-GUANG.YE PAS University of Tsukuba TsukubaIbaraki 305-8573Japan Geophysical Laboratory Carnegie Institution of Washington Washington DC 20015 USA Indira Gandhi Centre for Atomic Research Kalpakkam-603102 India Department of Chemistry and 4D LABS Simon Fraser University Burnaby BCCanada V5A 1S6

This paper reviews the recent progress in the understanding of the dynamics of Pb(B_(1/2)B0_(1/2))O_(3)-type relaxor ferroelectrics using of broadband micro-Brillouin scattering spectroscopy,which covers a large frequency range from 1 to 1000 GHz by a tandem multi-pass FabryPerot inter*** contrast to Pb(B_(1/3)B0_(2/3))O_(3)-type relaxors,there is no frustration on the B-site of perovskite structure and the degree of order of B-site cations depends on heat *** softening of sound velocity and an intense central peak are observed above the Curie temperature TC owing to the polarization°uctuations in polar nanoregions(PNRs).Unlike the Pb(B_(1/3)B0_(2/3))O_(3)relaxors,Pb(B_(1/2)B'_(1/2))O_(3)does not undergoes a typical diffuse phase transition without lead vacancies on A-site which enhances *** the(1-x)Pb(B_(1/2)B'_(1/2))O_(3-x)PbTiO_(3)solid solutions,the long range polar order increases as the PbTiO_(3)content ***,a central peak owing to dynamic PNRs still remains even for the composition near the MPB,and a critical slowing down is clearly observed in the vicinity of TC.

关键词： Ferroelectric relaxor elastic anomaly central peak Brillouin scattering

Real-world efficacy and safety of tofacitinib treatment in Asian patients with ulcerative colitis

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 Gastroenterology 2024年第13期30卷 1871-1886页

作者： Kentaro kojima Kenji Watanabe Mikio Kawai Soichi Yagi Koji Kaku Maiko Ikenouchi Toshiyuki Sato Koji Kamikozuru Yoko Yokoyama Tetsuya Takagawa Masahito Shimizu Shinichiro Shinzaki Department of Gastroenterology Hyogo Medical UniversityNishinomiya 663-8501Japan Department of Gastroenterology Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Internal Medicine for Inflammatory Bowel Disease The University of ToyamaToyama 930-0194Japan Center for Clinical Research and Education Hyogo Medical UniversityNishinomiya 663-8501Japan

BACKGROUND Real-world data on tofacitinib(TOF)covering a period of more than 1 year for a sufficient number of Asian patients with ulcerative colitis(UC)are *** To investigate the long-term efficacy and safety of TOF treatment for UC,including clinical *** We performed a retrospective single-center observational analysis of 111 UC patients administered TOF at Hyogo Medical University as a tertiary inflammatory bowel disease *** consecutive UC patients who received TOF between May 2018 and February 2020 were *** were followed up until August *** primary outcome was the clinical response rate at week *** outcomes included clinical remission at week 8,cumulative persistence rate of TOF administration,colectomy-free survival,relapse after tapering of TOF and predictors of clinical response at week 8 and week *** The clinical response and remission rates were 66.3%and 50.5%at week 8,and 47.1%and 43.5%at week 48,*** overall cumulative clinical remission rate was 61.7%at week 48 and history of anti-tumor necrosis factor-alpha(TNF-α)agents use had no influence(P=0.25).The cumulative TOF persistence rate at week 48 was significantly lower in patients without clinical remission than in those with remission at week 8(30.9%vs 88.1%;P<0.001).Baseline partial Mayo Score was significantly lower in responders vs non-responders at week 8(odds ratio:0.61,95%confidence interval:0.45-0.82,P=0.001).Relapse occurred in 45.7%of patients after TOF tapering,and 85.7%of patients responded within 4 wk after *** 6 patients with herpes zoster(HZ)developed the infection after achieving remission by *** TOF was more effective in UC patients with mild activity at baseline and its efficacy was not affected by previous treatment with anti-TNF-α*** relapsed patients responded again after re-increase of TOF and nearly half relapsed after tapering off *** attention is needed for tapering and H

关键词： Ulcerative colitis Tofacitinib Janus kinase inhibitor Real-world Biologics

Factors Influence Hanoians’ Choice of Non-Motorized Transport Mode to Access Bus Stations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Transportation Technologies 2024年第3期14卷 372-389页

作者： Ngo Trung Phuong Masahiko Kikuchi Aya kojima Hisashi Kubota Graduate School of Science and Engineering Saitama University Saitama Japan Department of Engineering Affairs City Bureau Ministry of Land Infrastructure Transportation and Tourism Tokyo Japan

Hanoi’s rapid urbanization has led to a surge in private vehicle ownership, particularly motorcycles, amidst inadequate public transportation infrastructure. Despite government efforts, many still prefer motorized transport, citing mobility and safety concerns, exacerbated by insufficient pedestrian infrastructure. This study examines the motivations behind this reliance on motorized vehicles, particularly motorcycles, in Hanoi. Findings reveal safety and convenience as primary factors driving motorized transport use, especially for accessing bus stations. Economic incentives could promote non-motorized travel and public transport adoption. Policy implications highlight the importance of addressing economic factors and improving access infrastructure to manage motorized vehicle reliance and foster sustainable urban mobility in Hanoi.

关键词： Access Mode Choice Non-Motorized Vehicles Motorized Vehicles Bus User Urban Transport Behavior

Inverse relationship between platelet Akt activity and hippocampal atrophy:A pilot case-control study in patients with diabetes mellitus

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 Clinical Cases 2024年第2期12卷 302-313页

作者： Haruhiko Tokuda Takamitsu Hori Daisuke Mizutani Tomoyuki Hioki Kumi kojima Takashi Onuma Yukiko Enomoto Tomoaki Doi Rie Matsushima-Nishiwaki Shinji Ogura Hiroki Iida Toru Iwama Takashi Sakurai Osamu Kozawa Department of Metabolic Research Research InstituteNational Center for Geriatrics and GerontologyObu 474-8511Japan Department of Clinical Laboratory National Center for Geriatrics and GerontologyObu 474-8511Japan Department of Pharmacology Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Neurosurgery Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Dermatology Central Japan International Medical CenterMinokamo 505-8510Japan Department of Anesthesiology and Pain Medicine Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Emergency Medicine Faculty of MedicineUniversity of ToyamaToyama 930-0194Japan Department of Emergency and Disaster Medicine Gifu University Graduate School of MedicineGifu 501-1194Japan Research Institute National Center for Geriatrics and GerontologyObu 474-8511Japan

BACKGROUND Akt plays diverse roles in *** is involved in the pathogenesis of type 2 diabetes mellitus(T2DM),which is caused by insulin *** also plays a vital role in human platelet ***,the hippocampus is closely associated with memory and learning,and a decrease in hippocampal volume is reportedly associated with an insulin-resistant phenotype in T2DM patients without *** To investigate the relationship between Akt phosphorylation in unstimulated platelets and the hippocampal volume in T2DM *** Platelet-rich plasma(PRP)was prepared from the venous blood of patients with T2DM or age-matched *** pellet lysate of the centrifuged PRP was subjected to western blotting to analyse the phosphorylation of Akt,p38 mitogen-activated protein(MAP)kinase and glyceraldehyde 3-phosphate dehydrogenase(GAPDH).Phosphorylation levels were quantified by densitometric *** volume was analysed using a voxel-based specific regional analysis system for Alzheimer’s disease on magnetic resonance imaging,which proposes the Z-score as a parameter that reflects hippocampal *** The levels of phosphorylated Akt corrected with phosphorylated p38 MAP kinase were inversely correlated with the Z-scores in the T2DM subjects,whereas the levels of phosphorylated Akt corrected with GAPDH were ***,this relationship was not observed in the control *** These results suggest that an inverse relationship may exist between platelet Akt activation and hippocampal atrophy in T2DM *** findings provide insight into the molecular mechanisms underlying T2DM hippocampal atrophy.

关键词： Akt Platelet Hippocampal atrophy Magnetic resonance imaging Diabetes mellitus