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MRI诊断马德龙病并颈部脂肪瘤1例并文献复习

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黑龙江医学 2024年第8期48卷 956-958页

作者：刘高峰孙源吕浩安徽省濉溪县医院影像科安徽淮北235100 安徽省濉溪县医院耳鼻喉科安徽淮北235100 安徽省濉溪县医院病理科安徽淮北235100

回顾性地分析1例MRI诊断马德龙病并颈部脂肪瘤的临床相关资料,并进行相关文献的分析。马德龙病具有特征性的影像学表现,虽然影像表现不能作为诊断的金标准,但通过影像检查可在客观上为临床提供一种极佳的手术依据,对临床的诊疗活动有一... 详细信息

回顾性地分析1例MRI诊断马德龙病并颈部脂肪瘤的临床相关资料,并进行相关文献的分析。马德龙病具有特征性的影像学表现,虽然影像表现不能作为诊断的金标准,但通过影像检查可在客观上为临床提供一种极佳的手术依据,对临床的诊疗活动有一定指导作用。

关键词：马德龙病颈部脂肪瘤鉴别诊断磁共振成像

Antibiotic Resistance Profile of Enterococcus faecalis and Enterococcus faecium Isolates from Urine and Pleural Fluid in Two Hospitals of Cameroon

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Open Journal of Medical Microbiology 2024年第1期14卷 39-49页

作者： Cécile Ingrid Djuikoue Farid wega Grace Yemina Kombeu Cedric Seugnou Nana Christiane Possi Kiyang lussabella Pohoko Medzam Erica Megane Noubissi Makougoum Nellie Mbianga Nkuigoua Herman Koyouo Tagne Mérimé Joël Tchinda Talokou Yvonne Valérie Yolande Mavoungou Ashu Michel Agbor Microbiology Department of the Faculty of Health Sciences of the Université des Montagnes Bangangté Cameroon Faculty of Medicine and Pharmaceutical Sciences University of Douala Douala Cameroon Microbiology Department of the Faculty of Health Sciences of Institut Universitaire du Golf de Guinée Douala Cameroon Centre Hospitalier Dominicain St Martin de Porres Yaoundé Cameroun Faculté des Sciences de la Santé Université Marien Ngouabi Brazzaville République du Congo

Enterococcus faecalis and Enterococcus faecium rank among the leading causes of nosocomial bacteremia and urinary tract infections. They often persist on hospital surfaces due to their ability to withstand adverse environmental conditions (low or high temperatures, high pH, and high salinity). The global Enterococcus faecalis-Enterococcus faecium ratio is currently shifting towards Enterococcus faecium. Enterococci present variable levels of resistance to certain families of antibiotics. This is the case for aminoglycosides, beta-lactams and cephalosporins. In 2017, wHO ranked Enterococci among priority pathogens for research and development of new antibiotics. The objective of our study was to determine the antibiotic resistance profile of Enterococcus faecalis and Enterococcus faecium isolates from urine and pleural fluid in two hospitals in Cameroon. This cross-sectional and analytic study was carried out between June to August 2023 on hospitalized and day patients in which a cytobacteriological test of urine and pleural fluid was done. The samples were inoculated on ClED Agar for urine and on Chocolate + polyvitex and blood agar (prepared from Columbia agar) for pleural fluid samples and incubated at 37℃ for 18 to 24 hours. Identification of isolates was carried out using the API 20 STREP micro gallery (Biomerieux, France) and tested for antimicrobial susceptibility. The data on socio-demographical and potential risk factors were recorded using self-administered questionnaires and data from laboratory analyses of the specimen were collected in a data capture sheet. Potential risk factors associated with the presence of Enterococci, were evaluated using the logistic regression in univariate and multivariate analysis. P value was considered as significant. A total of 511 patients were recruited who were predominantly females. Enterococcus spp were isolated in 27.79% of our samples with Enterococcus faecalis mostly encountered. Enterococcus spp showed a high

关键词： Enterococcus faecalis Enterococcus faecium Healthcare-Associated Infections Antimicrobial Resistance Cameroon

基于锗硅异质结双极晶体管的低噪声放大器及其反模结构的单粒子瞬态数值仿真研究

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物理学报 2024年第12期73卷 288-299页

作者：黄馨雨张晋新王信吕玲郭红霞冯娟闫允一王辉戚钧翔西安电子科技大学空间科学与技术学院西安710049 中国科学院新疆理化技术研究所乌鲁木齐830011 西北核技术研究院西安710024

针对锗硅异质结双极晶体管(SiGe HBT)进行TCAD仿真建模,基于SiGe HBT器件模型搭建低噪放大器(lNA)电路,开展单粒子瞬态(SET)的混合仿真,研究SET脉冲随离子不同lET值、入射角度的变化规律.结果表明:随着入射离子lET值的增大,lNA端口的SE... 详细信息

针对锗硅异质结双极晶体管(SiGe HBT)进行TCAD仿真建模,基于SiGe HBT器件模型搭建低噪放大器(lNA)电路,开展单粒子瞬态(SET)的混合仿真,研究SET脉冲随离子不同lET值、入射角度的变化规律.结果表明:随着入射离子lET值的增大,lNA端口的SET脉冲的幅值增大,振荡时间延长;随着离子入射角的增大,lNA端口的SET脉冲的幅值先增大后减小,振荡时间减小.使用反模(IM)共射共基结构(Cascode)降低lNA对单粒子效应的敏感度,验证了采用IM结构的lNA电路的相关射频性能.针对离子于共基极(CB)晶体管、共发射极(CE)晶体管两种位置入射进行SET实验.实验结果与本实验中的正向模式相比,IM Cascode结构的lNA电路的瞬态电流持续时间明显减少,并且峰值减小了66%及以上.

关键词：锗硅异质结双极晶体管单粒子效应反模混合仿真

Hydrothermal Synthesis and Crystal Structure of a Bivanadyl Capped Keggin Polyoxomet alate[Zn(2,2'-bpy)_2(H_2O)]_2[HPMo_(12)O_(40)(VO)_2]

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Chinese Journal of Structural Chemistry 2005年第2期24卷 139-144页

作者： lüXiu-Qing CHENJian-Xin lANTing-Yan HUANGYuan-Biao （CollegeofChemistryandMaterialsScience FujianNormalUniversityFuzhouFujian350007China

A hydrothermal reaction of zinc acetate with molybdenum trioxide, vanadium pentoxide, phosphorus pentoxide and 2,2?-bpy (2,2?-bipyridine) led to the title compound [Zn(2,2?- bpy)2(H2O)]2[HPMo12O40(VO)2] 1. Single-crystal X-ray diffraction revealed that 1 (C40H36- N8O44PV2Zn2Mo12) crystallizes in the triclinic system, space group P1 with a = 11.881(2), b = 12.468(2), c = 12.622(2) ?, α = 71.333(8), β = 74.485(4), γ = 86.896(5)o, V = 1705.8(4) ?3, Mr = 2747.64, Z = 1, Dc = 2.675 g/cm3, μ = 3.201 mm-1, F(000) = 1309, S = 1.070, the final R = 0.0697 and wR = 0.1905 for 5368 observed reflections with I > 2σ(I). Compound 1 is built on a mixed-metal bicapped [HPMo12V2O42] subunit covalently bonded to two [Zn(2,2?-bpy)2(H2O)]2+ clusters via terminal oxygen atoms of the capping V atoms. Each Zn atom is six-coordinated by four nitrogen atoms from two 2,2?-bpy ligands, one terminal oxygen atom from coordinated water mole- cule and another one from the capped {VO} unit.

关键词： Polyoxometalate crystal structure bivanadyl-capped polyoxoanion

基于超声-微纳米气泡辅助技术的可变光程水质多参数检测方法研究

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光谱学与光谱分析 2024年第7期44卷 2037-2044页

作者：李文李德健马永跃田旺陈银银王利民吕赫李杰骆紫云北方工业大学机电工程研究所北京100144

针对目前国家标准分析检测水质多参数方法存在的科学与技术问题,提出了一种基于超声-微纳米气泡(US-MNB)辅助技术、连续光谱法和顺序注射分析法(SIA)的可变光程水质多参数检测新方法。设计水质多参数检测系统,通过检测总磷(TP)、化学需... 详细信息

针对目前国家标准分析检测水质多参数方法存在的科学与技术问题,提出了一种基于超声-微纳米气泡(US-MNB)辅助技术、连续光谱法和顺序注射分析法(SIA)的可变光程水质多参数检测新方法。设计水质多参数检测系统,通过检测总磷(TP)、化学需氧量(COD)、氨氮(NH_(3)-N)和六价铬(Cr^(6+))四种水质参数,验证了新方法的可行性。系统设计的核心是基于超声与微纳米气泡相结合的消解室以及具有可变光程功能的光谱扫描检测室,可达到快速消解和稳定检测的目的。同时系统基于国家水质检测标准,优化了水质多参数联合检测流程,并利用分光光度法和顺序注射分析技术对四种水质参数的含量进行连续光谱检测。首先,在常温常压下采用US-MNB辅助技术结合强氧化剂对TP进行消解,同时对检测室中NH_(3)-N参数显色反应后的化合物直接进行光谱扫描测定,消解后,再进行TP的测定。同理,消解COD的同时,对检测室中的Cr^(6+)参数显色反应后的化合物直接进行光谱扫描测定,消解后,再进行COD的测定。整个检测过程所用时间大幅降低,可在短时间内自动完成水质多参数的测定,显著地提高了检测的效率。以上述四种水质参数为测定对象,利用最小二乘法构建回归模型,拟合回归方程并计算相关系数,并绘制各参数的浓度-吸光度标准工作曲线。结果表明:TP标准工作曲线拟合系数≥0.9845,且浓度与吸光度成正相关,重复性(RSD)为3.05%~3.62%,加标回收率为97.8%~103.6%;COD标准工作曲线拟合系数≥0.9987,且浓度与吸光度成负相关,重复性(RSD)为2.12%~2.74%,加标回收率为98.7%~104.7%;NH_(3)-N标准工作曲线拟合系数≥0.9953,且浓度与吸光度成正相关,重复性(RSD)为3.41%~3.59%,加标回收率为99.2%~102.4%;Cr^(6+)标准工作曲线拟合系数≥0.9938,且浓度与吸光度成正相关,重复性(RSD)为3.51%~3.92%,加标回收率为98.9%~109.3%。系统可准确测定水样中TP、COD、NH_(3)-N和Cr^(6+)的含量,且具有良好的稳定性与可靠性。基于超声-微纳米气泡辅助技术的可变光程水质多参数检测方法研究,对于拓宽光谱法在水质多参数快速检测领域的应用以及提升检测效率等方面的研究具有重要作用。

关键词：连续光谱超声-微纳米气泡顺序注射分析法可变光程多参数水质检测联合检测

Discharge-Stage Relationship on Urban Streams Evaluated at USGS Gauging Stations,***,Missouri

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Journal of Earth Science 2020年第6期31卷 1133-1141页

作者： Robert E.Criss David l.Nelson Department of Earth and Planetary Sciences Washington UniversitySt.Louis MO 63130USA Columbia Cir Pasadena CA 91105USA

Extensive USGS data tables and detailed,1 m2 li DAR surveys are used to determine the optimal power n that relates discharge(Q)to stage(h*)above channel bottom(ho)at 39 gauging stations on small streams in the ***,Missouri area,all of which have catchments of 0.6 to 220 *** different methodologies are employed to determine both n and ho:(1)optimizing linearity in a plot of Q1/n *** stage(hl)using USGS field measurements at each site;(2)optimizing linearity in a plot of Q1/n *** using USGS rating tables at each site;(3)a mathematical inverse method applied to the same USGS rating tables;(4)use of li DAR data on channel geometry to determine the power dependences of channel area A and hydraulic radius H on h*,combined with the Manning and rational equations to predict *** these methods,only methods 2 and 3 compare favorably,and these values compare poorly with Method 1 based on field data,and with method 4 based on theoretical and empirical *** Method 4 is predictive,it provides a useful alternative to methods 1–3 that are based on USGS field measurements,which are heavily weighted toward low *** conclude that the apparent values of n in the USGS rating tables are systematically too low for small streams.

关键词： stream gauging li DAR topography urban flooding discharge hydrology

Stress reduction via neuro-emotional technique to achieve the simultaneous resolution of chronic low back pain with multiple inflammatory and biobehavioural indicators:A randomized,double-blinded,placebo-controlled trial

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Journal of Integrative Medicine 2022年第2期20卷 135-144页

作者： Peter Bablis Henry Pollard Anthony l.Rosner Universal Health New South Wales 2028Australia School of Medical and Applied Sciences University of Central QueenslandBrisbaneNew South Wales 4000Australia Medical Information Services MA 02479-4149United States

Background:Beginning with the concepts of stress developed by Selye,an approach to stress and pain management,known as neuro-emotional technique(NET),has been *** is a treatment approach based on the principle that the stressor effects of dormant and/or current unresolved issues or trauma are what determine one’s bodily *** responses are relatively personalized to the conditioned,experiential and emotional reality of the ***:To determine the effect of NET on patients with chronic low back pain(ClBP)over ***,setting,participants,and interventions:In a randomized,double-blinded,placebo-controlled study conducted in a single clinic,NET or control treatments were given twice weekly for 4 weeks in a population of 112 *** outcome measures:Outcome measures,including Oswestry Disability Index,Quadruple Visual Analogue Scale,the psychoneuroimmunology markers of blood serum levels of C-reactive protein,tumour necrosis factor-a,interleukin-1(Il-1),Il-6,and Il-10,and 10 dimensions of the Short Form Health Survey scale,were assessed at baseline and at 1,3 and 6 months following the intervention ***:Compared to placebo,NET produced clinical and statistical significance(Plines of virtually all physiological,pain and disability markers,accompanied by gains in quality-of-life indicators at 0(baseline),1,3 and 6 *** of the percentages of patients whose 5 biomarkers lay outside the normative range were achieved at 1,3 and 6 months by NET but not control ***:A randomized,controlled trial of ClBP patients indicated that 8 NET interventions,compared to placebo,produced clinically and statistically significant reductions in pain,disability and inflammatory biomarkers,and improvements in quality-of-life measures.

关键词： Neuro-emotional technique Biopsychosocial model Emotion Mind-body therapies Inflammation Biomarker

Understanding acute burn injury as a chronic disease

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Burns & Trauma 2019年第1期7卷 213-221页

作者： lucy w.Barrett Vanessa S.Fear Jason C.waithman Fiona M.wood Mark w.Fear Telethon Kids Institute University of Western AustraliaNorthern EntrancePerth Children’s Hospital15 Hospital AveNedlandsWA 6009Australia Institute for Respiratory Health Ground FloorE Block Sir Charles Gairdner HospitalHospital AvenueNedlandsWA 6009Australia Fiona wood Foundation Fiona Stanley HospitalMNH(B)Main HospitalCD 15Level 4Burns Unit102-118 Murdoch DriveMurdochWA 6150Australia Burns Service of western Australia WA Department of HealthNedlandsWA 6009Australia Burn injury research unit School of Biomedical SciencesUniversity of Western AustraliaCrawleyWA 6009Australia

while treatment for burn injury has improved significantly over the past few decades,reducing mortality and improving patient outcomes,recent evidence has revealed that burn injury is associated with a number of secondary pathologies,many of which arise long after the initial injury has *** studies have linked burn injury with increased risk of cancer,cardiovascular disease,nervous system disorders,diabetes,musculoskeletal disorders,gastrointestinal disease,infections,anxiety and *** wide range of secondary pathologies indicates that burn can cause sustained disruption of homeostasis,presenting new challenges for post-burn *** burn injury as a chronic disease will improve patient care,providing evidence for better long-term support and monitoring of *** focused research into the mechanisms underpinning long-term dysfunction,a better understanding of burn injury pathology may help with the development of preventative treatments to improve long-term health *** review will outline evidence of long-term health effects,possible mechanisms linking burn injury to long-term health and current research into burns as a chronic disease.

关键词： Burns Immune system Endocrine system Homeostasis Patient care Chronic disease

Broad learning system based on the quantized minimum error entropy criterion

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Science China(Information Sciences) 2022年第12期65卷 204-219页

作者： Simin ZHANG Zhulin lIU C.l.Philip CHEN School of Computer Science and Engineering South China University of Technology Pazhou lab

The broad learning system(BlS) based on the minimum mean square error(MMSE) criterion can achieve outstanding performance without spending too much time in various machine learning ***, when data are polluted by non-Gaussian noise, the stability of BlS may be destroyed because the MMSE criterion is sensitive to outliers. Different from the MMSE criterion, the minimum error entropy(MEE) criterion utilizes the kernel function to capture high-dimensional information and decrease the negative influence of outliers, which will make BlS more discriminative and robust. Nevertheless, the computational complexity of MEE is high due to a double summation of the data size. To solve these issues, this paper proposes a new robust BlS variant based on the quantized minimum error entropy(QMEE) criterion, in which a quantization operation is used to reduce the computational complexity of MEE. The proposed model BlS-QMEE is optimized by the fixed-point iterative method, and a sufficient condition for its convergence is provided. Compared with the standard BlS and other existing robust variants of BlS, BlS-QMEE performs more satisfactorily without consuming too much time. The desirable performance of BlS-QMEE is verified by various experiments on function approximation, several public datasets, and a practical application.

关键词： broad learning system quantized minimum error entropy robustness minimum error entropy convergence