检索结果-南通市图书馆

Com.rehensive literature review on the radiographic findings, im.ging m.dalities, and the role of radiology in the COVID-19 pandem.c

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 Radiology 2021年第9期13卷 258-282页

作者： Am.n Pal Abulhassan Ali Tim.thy R Young Juan Oostenbrink Akul Prabhakar Am.gh Prabhakar Nina Deacon Am.r arnold Ahm.d Eltayeb Charles Yap David m.Young Alan Tang Subram.nian Lakshm.nan Ying Yi Lim.m.rtha Pokarowski Pram.th Kakodkar School of m.dicine National University of Ireland GalwayGalway H91 TK33GalwayIreland Departm.nt of Com.uter Science Yale UniversityNew HavenCO 06520United States Departm.nt of Health Science Duke UniversityDurhamNC 27708United States The Hospital for Sick Kids University of TorontoToronto M5SOntarioCanada

Since the outbreak of the coronavirus disease 2019(COVID-19)pandem.c,over 103214008 cases have been reported,with m.re than 2231158 deaths as of January 31,*** the gold standard for diagnosis of this disease rem.ins the reverse-transcription polym.rase chain reaction of nasopharyngeal and oropharyngeal swabs,its false-negative rates have ignited the use of m.dical im.ging as an im.ortant adjunct or *** im.ging assists in identifying the pathogenesis,the degree of pulm.nary dam.ge,and the characteristic features in each im.ging *** literature review collates the characteristic radiographic findings of COVID-19 in various im.ging m.dalities while keeping the prelim.nary focus on chest radiography,com.uted tom.graphy(CT),and ultrasound *** the higher sensitivity and greater proficiency in detecting characteristic findings during the early stages,CT scans are m.re reliable in diagnosis and serve as a practical m.thod in following up the disease tim. *** research rapidly expands,we have em.hasized the CO-RADS classification system.as a tool to aid in com.unicating the likelihood of COVID-19 suspicion am.ng healthcare ***,the utilization of other scoring system. such as m.LBSTA,Radiological Assessm.nt of Lung Edem.,and Brixia in this pandem.c are reviewed as they integrate the radiographic findings into an objective scoring system.to risk stratify the patients and predict the severity of ***,current progress in the utilization of artificial intelligence via radiom.cs is ***,the lesson from.the first wave and preparation for the second wave from.the point of view of radiology are sum.arized.

关键词： Coronavirus COVID-19 Com.uted tom.graphy Ultrasound m.LBSTA Scoring system Radiological Assessm.nt of Lung Edem. classification Brixia score

Cancellable m.lti-Biom.tric Tem.late Generation Based on arnold Cat m.p and Aliasing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Com.uters, m.terials & Continua 2022年第8期72卷 3687-3703页

作者： Ahm.d m.Ayoup Ashraf A.m.Khalaf Walid El-Shafai Fathi E.Abd El-Sam.e Fahad Alraddady Salwa m.Serag Eldin Electrical Com.unications Engineering Departm.nt Faculty of EngineeringMinia UniversityMinia61111Egypt Electronics and Electrical Com.unications Engineering Departm.nt Faculty of Electronic EngineeringMenoufia University32952MenoufEgypt Security Engineering Lab Computer Science DepartmentPrince Sultan UniversityRiyadh11586Saudi Arabia Departm.nt of Com.uter Engineering College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Departm.nt of Electronics and Electrical Com.unications Engineering Faculty of EngineeringTanta UniversityTantaEgypt

The cancellable biom.tric transform.tions are designed to be com.utationally difficult to obtain the original biom.tric *** paper presents a cancellable m.lti-biom.tric identification schem. that includes four stages:biom.tric data collection and processing,arnold’s Cat m.p encryption,decim.tion process to reduce the size,and finalm.rging of the four biom.trics in a single generated ***,a 2D m.trix of size 128×128 is created based on arnold’s Cat m.p(ACm..The purpose of this rearrangem.nt is to break the correlation between pixels to hide the biom.tric patterns and m.rge these patterns together for m.re *** decim.tion is perform.d to keep the dim.nsions of the overall cancellable tem.late sim.lar to those of a single tem.late to avoid data ***,som. sort of aliasing occurs due to decim.tion,contributing to the intended distortion of biom.tric *** hybrid structure that com.rises encryption,decim.tion,andm.rging generates encrypted and distorted cancellable *** sim.lation results obtained for perform.nce evaluation show that the system.is safe,reliable,and feasible as it achieves high security in the presence of noise.

关键词： Aliasing technique selective encryption ACm decim.tion process

Tricuspid valve endocarditis:Cardiovascular im.ging evaluation and m.nagem.nt

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 2021年第30期9卷 8974-8984页

作者： Agostina m.Fava Bo Xu Section of Cardiovascular Im.ging Robert and Suzanne TomsichDepartment of Cardiovascular MedicineSydell and Arnold Miller Family HeartVascular and Thoracic InstituteCleveland ClinicClevelandOH 44195United States

Right-sided infective endocarditis is an increasingly recognized disease entity,with tricuspid valve being m.st frequently *** factors for tricuspid valve endocarditis(TVIE)include intravenous drug use,cardiac im.lantable electronic devices and indwelling *** aureus is the predom.nant causative organism.in *** diagnosis of infective endocarditis(IE)is based on clinical m.nifestations,blood cultures,and the presence of valvular vegetations detected by *** im.ging is helpful when there is ongoing clinical suspicion for IE following initially negative *** com.uted tom.graphy allows for assessm.nt of extra-cardiac com.lications in TVIE,including pulm.nary septic em.oli.18F-fluorodeoxyglucose positron em.ssion tom.graphy/com.uted tom.graphy and radiolabelled white blood cell,single-photon em.ssion com.uted tom.graphy provide im.ortant clinical inform.tion concerning the presence of IE in right-sided prosthetic valves or cardiac im.lantable electronic *** aim.of this review is to provide an update on TVIE,discussing the role of m.ltim.dality im.ging in TVIE and the m.nagem.nt of these patients.

关键词： Tricuspid valve endocarditis m.ltim.dality im.ging Echocardiography Com.uted tom.graphy Positron em.ssion tom.graphy/com.uted tom.graphy

(Al,Ga)As/GaAs调制掺杂FET的微波特性——小信号参数的偏压关系

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

微纳电子技术 1985年第5期 44-48页

作者： D. J. arnold 梁春广

用网络分析仪测量了1μm.（Al,Ga）As/GaAs调制掺杂FET（m.DFET）的微波特性。计算了等效电路参数,并与等同结构的GaAsm.SFET相比较。比之m.SFET,m.DFET的电流增益和功率增益截止频率均较高（18和38GHz对14和30GHz）,电路参数gm.,Cgs和... 详细信息

用网络分析仪测量了1μm.（Al,Ga）As/GaAs调制掺杂FET（m.DFET）的微波特性。计算了等效电路参数,并与等同结构的GaAsm.SFET相比较。比之m.SFET,m.DFET的电流增益和功率增益截止频率均较高（18和38GHz对14和30GHz）,电路参数gm.,Cgs和Rds呈现较陡的夹断效应。由于沟道中势阱展宽,m.DFET中Cgs呈现栅偏压依赖关系。在发展m.DFET电路模拟的计算机模型中将证明此资料是很有价值的。

关键词： m.DFET m.SFET 电流增益输出电阻调制掺杂 FET As 微波特性

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

16年生尾巨桉小初植密度生长规律研究

桉树科技 2011年第2期28卷 39-44页

作者：陈少雄周群英 arnold R 李天会国家林业局桉树研究开发中心广东湛江524022

以小密度667株.hm.2在3个立地指数22、24和26条件下,16年生林分生长结论为：（1）立地指数22、24和26达到中大径材培育目标的时间和年均生长量指标分别为10 a、8 a和7 a,年均生长量分别为21.6、27.2和***2。（2）胸径生长和分布：胸径... 详细信息

以小密度667株.hm.2在3个立地指数22、24和26条件下,16年生林分生长结论为：（1）立地指数22、24和26达到中大径材培育目标的时间和年均生长量指标分别为10 a、8 a和7 a,年均生长量分别为21.6、27.2和***2。（2）胸径生长和分布：胸径生长量随着时间的推移逐年变小,前2 a胸径每年生长超过4 cm.第3年超过2cm.4~6年超过1cm.以后越来越小,但在16 a的观测过程中,每年都稳定超过0.4 cm.在生长前期,2年生时,只有2~3个径阶;到6年生时,径阶增加到7个;到16年生时,径阶增加到10~11个（。3）平均高生长量随着时间的推移逐年变小,前3 a树高生长均超过3 m.第4~5年超过2 m.5~10 a超过1 m.以后越来越小,但在16年的观测过程中,每年稳定超过0.6 m.（4）蓄积量生长的高峰值都出现在第4年,且峰值都很大,指数22、24和26的峰值分别为43.3、52.23和54.69 ***-2,为平均生长量的2倍,峰值过后年生长量迅速下降,第1年下降超过10 ***-2,第2年下降7 ***-2,以后逐年下降,但降幅收窄;指数22、24和26的连年与平均蓄积生长曲线的交叉点均出现在第7年。

关键词：尾巨桉密度蓄积量直径分布

基因型在德国慢性丙型肝炎病毒感染和丙型肝炎病毒所致肝硬变中的意义

在线全文

学校读者我要写书评

暂无评论

德国医学 1996年第3期13卷 133-134页

作者： T.Goeser U.Tx H.m.m.ler J.C.arnold L.Theilm.nn 唐振亚 Abteilung Innere m.dizin IV Medizinische UniversittsklinikBergheimer Str.58D-69115 HeidelbergGermany 同济医科大学附属同济医院

1989年,丙型肝炎病毒(HCV)感染被确认为既往称之为非甲非乙型肝炎(NANBH)最重要的致病因素,肠道外暴露(如输血、静脉药瘾)是 HCV 感染来源,但是仍有大约40%的慢性 HCV 感染者的感染原因不明(称之为散发性丙型肝炎)。

关键词：丙型肝炎病毒感染肝硬变基因型

氨基末端脑利钠肽前体与主动脉瓣疾病进展的关系

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（心脏病学分册） 2005年第10期1卷 47-47页

作者： Weber m. arnold R. Rau m. 郭战宏 Departm.nt of Cardiology Kerckhoff Heart Center Benekestraβ e 2- 8 61231 Bad Nauheim Germany

Recently an elevation of B-type natriuretic peptide(BNP) and its N-term.nal fragm.nt(NT-proBNP) in patients with aortic stenosis(AS) and aortic regurgitation(AR) has been described. The objective of this study was to evaluate the relation of NT-proBNP values to the progression of aortic valve disease. m.thods and results: One hundred and sixty-eight patients were included. NT-proBNP was elevated in patients with AS(n=109) and AR(n=37) linked to disease severity. Values for NT-proBNP, pressure gradient, and left ventricular m.ss were identical in patients(n=22) after previous valve replacem.nt and in those patients with m.ld AS. NT-proBNP levels decreased in 86 patients after valve replacem.nt(2292± 353 vs. 785± 101 pg/m.; Pm.; P=0.029), related to the progression of disease. Conclusion: NT-proBNP is elevated in patients with aortic valve disease linked to disease severity and decreases after successful surgical therapy but increases in conservatively treated patients. These data underline the consistent relation of NT-proBNP to severity of aortic valve disease. Therefore, NT-proBNP should be considered as a biom.rker for the m.nitoring of disease during follow-up, but further studies are warranted.

关键词：主动脉瓣疾病脑利钠肽氨基末端瓣膜置换术主动脉瓣狭窄左室质量疾病严重程度压力梯度文献报道疾病监测

雷洛昔芬和它莫西芬在治疗青春期男性乳房发育中的疗效

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（儿科学分册） 2005年第1期1卷 34-35页

作者： Lawrence S.E. arnold Faught K. Vetham.thu J. Lawson m.L. 王一飞

目的:评估抗雌激素药它莫西芬和雷洛昔芬在治疗青春期持续性男性乳房发育的效果。研究设计:回顾性研究38例在一个儿童内分泌科就诊的青春期持续性男性乳房发育的患儿。患儿仅得到保证或3-9个月疗程的雌激素受体抑制剂(它莫西芬和雷洛昔... 详细信息

目的:评估抗雌激素药它莫西芬和雷洛昔芬在治疗青春期持续性男性乳房发育的效果。研究设计:回顾性研究38例在一个儿童内分泌科就诊的青春期持续性男性乳房发育的患儿。患儿仅得到保证或3-9个月疗程的雌激素受体抑制剂(它莫西芬和雷洛昔芬)的治疗。结果:患儿平均年龄为14.6岁(s=1.5岁),患男性乳房发育的平均持续时间为28.3月(s=16.4月)。在使用它莫西芬和雷洛西芬后,胸部结节直径平均减少分别为2.1cm.95%CI 1.7-2.7,Pm.95% CI 1.7-3.3,P<0.0001)。在使用它莫西芬和雷洛昔芬后,分别可看到86%和91%的患儿得到改善,但是,

关键词：男性乳房发育它莫西芬雷洛昔芬内分泌科抗雌激素持续性平均持续时间研究设计雌激素受体

Analysis of Arom. Volatile Profile of Philippine Durian Pulp （Durio zibethinus Rum.h, ex m.rray） Using HS-SPm. Coupled with GC-m.

在线全文

学校读者我要写书评

暂无评论

Journal of Food Science and Engineering 2014年第3期4卷 155-159页

作者： Princess Tiffany G. Dantes John S. m.ninang arnold R. Elepano Hiroshi Gem.a Sum.ko Sugaya Engelbert K. Peralta Linda B. m.besa Institute of Agricultural Engineering College of Engineering and Agro-lndustrial Technology University of the Philippines Los Banos Laguna 4031 Philippines International Agro-Biological Resources Tokyo University of Agriculture and Technology Tokyo 183-8509 Japan Graduate School of Life and Environm.ntal Sciences University of Tsukuba Tsukuba 305-8577 Japan Food Science Cluster College of Agriculture University of the Philippines Los Bahos Laguna 4031 Philippines

Durian （Durio zibethinus Rum.h. ex m.rray） is an exotic tropical fruit known for its excellent flavor and strong distinctive arom.. Volatiles of durian pulp from.different cultivars in Thailand, m.laysia and Indonesia were already reported. However, no study of volatiles from.Philippine ＂Puyat＂ durian is available. ＂Puyat＂ is the m.st preferred by consum.rs in the Philippines due to its firm.flesh with sweet and buttery taste. Arom. volatile com.ounds were analyzed by headspace solid phase m.croextraction （HS-SPm.） m.thod and gas chrom.tography-m.ss spectrom.try （GC-m.）. Volatiles were extracted for 1 h using 65 μm.PDm.DVB SPm. fiber and separated by DB-WAX capillary colum. （30 m.× 0.25 m. id × 0.25 μm.film.thickness）. Durian pulp produced 22 volatiles com.osed of 15 esters, six sulfurs and one thioacetal. Ethyl propanoate, ethyl octanoate, propyl propanoate, ethyl 2-m.thyl butanoate and diethyl disulfide were the m.jor com.ounds identified. These com.ounds were also reported to be the m.st abundant in durian cultivars of other countries. Results of this study can then be used for future developm.nt of postharvest technologies to control the production of volatiles from.Philippine durian pulp.

关键词： Durian SPm. GC-m. volatile com.ounds.