检索结果-南通市图书馆

A new formula for screening metabolic syndrome in Asians:skin fold thickness at A8 point on Erdheim diagram and waist circumference

引用

Journal of Geriatric Cardiology 2007年第1期4卷 32-41页

作者： Toan C Nguyen Thai Q Ngo Khoa ta Pham Son V Nguyen Hieu T Luong Cong d Nguyen Vietnam Military Medical University Ha Dong Town Ha Tay Province Vietnam department of Cardiology Hospital 103 Vietnam

Background and objectives Recent studies have shown that abdominal obesity is an important component for the diagnosis of metabolic syndrome (MS) and MS is a high risk factor for cardiovascular disease and diabetes mellitus. The aim of this study was to develop a new formula for screening and diagnosis of MS using the waist circumference (WC) and skin fold thickness at the point A8 (SFA8) on the Erdheim diagram. Methods A total of 358 essential hypertensive patients (189 male and 169 female) with a mean age of 59.0±9.7 years were included; 151 healthy people (79 male, 72 female) with a mean age of 57.3±12.1 years (similar to hypertensive patients) who were non-hypertensive and non-diabetic served as a control group. All subjects had no evidence of hepatic, renal, or endocrine disease as determined by history, physical examination and screening blood tests. Height, weight, WC, SFA8, blood pressure (BP), fasting plasma glucose, HdL-cholesterol and triglyceride levels were measured in all subjects. Abdominal obesity measured by WC using the Asia-Pacific criteria (IdFA) was applied for meeting the MS definition. The normal value of SFA8 was measured in the non- MS group. Relationships between SFA8 and systolic BP, diastolic BP, fasting plasma glucose, HdL-cholesterol and triglyceride levels were calculated in the control group. A new formula was developed according to high SFA8 and high WC. Results The normal value of SFA8 in non-MS group was 23.6±7.2 mm in male and 26.5±4.6 mm in female, respectively. The value of SFA8 in MS group was 36.7± 7.4 mm in male and 38.9 ± 8.1 mm in female, respectively. The value of WC in MS group and non-MS group were 92.5±3.0 cm and 79.4±6. 1 cm in male and 86.3±6.4 cm and 74.7±5.4 cm in female, respectively. There was a correlation between SFA8 and systolic BP, diastolic BP, fasting plasma glucose, HdL-cholesterol and triglyceride in control group (the correlation coefficients were 0.29, 0.23, 0.25, -0.31 and 0.46, respectively, P < 0.01)

关键词： waist circumference skin fold thickness metabolic syndrome

来源：

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

Candidate Eclipsing Binary Systems with aδScuti Star in Northern TESS Field

引用

Research in Astronomy and Astrophysics 2022年第8期22卷 34-48页

作者： F.Kahraman Aliçavuş d.Gümüş Ö.Kırmızıtaş Ö.Ekinci S.Çavuş Y.T.Kaya F.Aliçavuş Çanakkale Onsekiz Mart University Faculty of Sciences and ArtsPhysics Department17100ÇanakkaleTurkey Çanakkale Onsekiz Mart University Astrophysics Research Center and Ulupnar ObservatoryTR-17100ÇanakkaleTurkey Istanbul University Institute of Graduate Studies in ScienceProgramme of Astronomy and Space Sciences34116BeyazıtIstanbulTurkey Çanakkale Onsekiz Mart University School of Graduate StudiesDepartment of PhysicsTR-17100ÇanakkaleTurkey Çanakkale Onsekiz Mart University School of Graduate StudiesDepartment of Space Sciences and TechnologiesTR-17100ÇanakkaleTurkey Çanakkale Onsekiz Mart University Faculty of Engineering Computer EngineeringTR-17100ÇanakkaleTurkey

The existence of pulsating stars in eclipsing binaries has been known for *** types of objects are extremely valuable systems for astronomical studies as they exhibit both eclipse and pulsation *** eclipsing binaries are the only way to directly measure the mass and radius of stars with a good accuracy(≤1%),while the pulsations are a unique way to probe the stellar interior via oscillation *** are different types of pulsating stars existing in eclipsing *** of them is theδScuti ***,the known number ofδScuti stars in eclipsing binaries is around 90 according to the latest catalog of these *** increasing number of these kinds of variables is important to understand the stellar structure,evolution and the effect of binarity on the ***,in this study,we focus on discovering new eclipsing binaries withδScuti component(s).We searched within the northern Transiting Exoplanet Survey Satellite(TESS)field with a visual inspection by following some criteria such as light curve shape,the existence of pulsation like variations in the out-of-eclipse light curve and the T_(eff) values of the *** a result of these criteria,we discovered some *** orbital variations were first removed from the TESS light curves and frequency analysis was performed on the *** luminosity,and absolute and bolometric magnitudes of the targets were calculated as *** find how much of these parameters represent the primary(more luminous)binary component,we also computed the flux density ratio of the systems by utilizing the area of the *** addition,the positions of the systems in the H-R diagram were examined considering the flux density *** a consequence of the investigation,we defined 38 candidateδScuti stars and also one Maia variable in eclipsing binary systems.

关键词： (stars:)binaries:eclipsing stars:variables:delta Scuti techniques:photometric

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Skin fold thickness at abdomen:a simple anthropometric measurement may compliment metabolic syndrome definition in patients with normal waist circumference

引用

Journal of Geriatric Cardiology 2006年第2期3卷 85-92页

作者： Toan C Nguyen Thai Q Ngo Son V Nguyen Hieu T Luong Khoa ta Pham Cong d Nguyen Vietnam Military Medical University Ha ToyVietnam

Backgroud and Objectives Previous studies have reported that skin fold thickness (SF) strongly correlated with insulin resistance in the metabolic syndrome (MetS). In this study, we developed a MetS definition by SF at A8 point (SFA8) on Erdheim diagram(MetSSFA8) in essential hypertensive patients. Subjects and Methods Medical records of 268 essential hypertensive patients (126males and 122 females) were analyzed, including 210 non-diabetic patients (NdM group) and 58 patients with diabetes (dM group).The mean age was 61.4 ± 9.9 and 59.0 ± 11.0 years, respectively. The control group consisted of 90 non-diabetic, non-hypertensive patients with a mean age of 58.0 ± 11.3 years. The proposed MetSSFA8 definition included SFA8 specific values ( ≥30 mm in female and ≥27 mm in male) and at least two of the following: raised triglyceride levels ( ≥1.7 mmol/L), or specific treatment for this lipid abnormality; raised blood pressure (SBP≥130 mmHg and/or dBP≥85 mmHg), or treatment of previously diagnosed hypertension;reduced HdL-cholesterol (＜ 1.03 mmol/L in men, ＜1.29 mmol/L in women), or specific treatment for this lipid abnormality; raised fasting plasma glucose (≥5.6 mmol/l), or previously diagnosed dM. Metabolic Syndrome by the National Cholesterol Education Program and International diabetes Federation definitions were determined with abdominal obesity defined by Asia-Pacific criteria for waist circumference (NCEPA and IdFA). Results The percentage of MetS as defined by NCEPA, IdFA and MetSSFA8 in NdM group was lower than that of NCEPA, IdFA and MetSSFA8 in dM group [OR=7.7 (95%CI, 2.9-20.2) and 2.5 (95%CI, 1.4-4.8) and 2.7(95%CI, 1.3-5.6), respectively] and higher than that of the control group [OR=53.3 (95%CI, 16.7-170.6), 5.8 (95%CI, 2.6-13.2) and18.8 (95%CI, 7.3-48.7), respectively]. The percentage of MetS by NCEPA, IdFA and MetSSFA8 in males in NdM group was lower than the percentage of MetS by NCEPA, IdFA and MetSSFA8 in females in NdM group (50.8% and 77.9%, P＜ 0.0

关键词： skin fold thickness metabolic syndrome hypertension

来源：

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

Research of Factors Affecting Fuels Trading Volume of Vietnam——A Gravity Model Approach

Research of Factors Affecting Fuels Trading Volume of Vietna...

引用

作者： ta THANH TUYEN 华中师范大学

学位级别：硕士

在越南的工业化和现代化过程中,能源产业扮演着非常重要的角色。作为拥有丰富的自然资源以及大量的原油储备的国家,越南在这方面的开拓及发展有许多优势。然而,有限的科技水平己为原油开采及加工带来不少困难。虽然近几年来越南已建设... 详细信息

在越南的工业化和现代化过程中,能源产业扮演着非常重要的角色。作为拥有丰富的自然资源以及大量的原油储备的国家,越南在这方面的开拓及发展有许多优势。然而,有限的科技水平己为原油开采及加工带来不少困难。虽然近几年来越南已建设了三个炼油厂,但其产量未能满足国内需求。因此,越南石油进出口活动仍值得关注。本文的研宄目的主要是探讨2010-2017年阶段越南燃料贸易、越南与贸易伙伴国的燃料进出口的影响因素。本文所使用的数据来自于世界综合贸易方案(WITS)、国际货币基金组织(IMF)、越南海关(Vietnam Customs)以及CEPII等数据库,反映了越南国内及贸易伙伴国的市场规模、越南与贸易伙伴国之间的距离、过去的殖民关系以及亚洲太平洋经济合作组织(APEC)成员国之间的关系。通过采取引力模型的定量研究方法,本文测量经济规模、市场规模、越南与贸易伙伴国之间的关系、越南作为APEC的正式成员国、过去的殖民关系等各种因素对越南燃料贸易、越南与贸易伙伴国的燃料进出口的影响。研宄结果表明,越南国内经济规模对越南的石油进口量有正面影响,而贸易伙伴国的经济规模对越南石油对外出口量有正面影响。越南国内市场规模对越南石油贸易进口量和贸易总量有着重要影响,而国外市场规模则对越南石油出口量有影响。另外,越南与贸易伙伴国之间的距离对越南燃料贸易、越南燃料进出口有着负面影响。与此同时,成为APEC的成员国与过去的殖民关系也对其有影响。本文在搜集数据之后使用Statal4和Excel进行统计分析。本文的研宄框架和研宄步骤如下:第一章简单概述研究背景及越南目前燃料贸易情况。在东南亚地区,越南是个燃料用量较高的国家。根据越南工商部的报告表明,消费水平在未来几年会有快速提升的趋势,越南将要进口燃料。同时在该地区,越南也有较大的原油出口量,但这几年来,由于国内生产量不能满足国内不断增加的需求,出口金额大幅下降,直接影响到居民生活和设备的运行。因此,越南需要有一个具体的战略,大量投资于生产、分配及出口。从此,需要更加关注燃料出口,避免成为燃料进口国的可能,换言之,需要严格监督越南的燃料贸易活动。近几年来所颁布和修改的相关政策己为企业的发展提供良好条件,越南的进出口活动也随之而快速发展。政府一般会要求相关部门审查并简化各种规定和手续,为企业提供更好的生产和经营环境。另外,对于一些重点发展领域,银行贷款利率也比较低。根据越南海关总局2017年12月12日公布的数据表明,越南进出口金额达4000亿美元,预计2017年全年达4200亿美元。因此,在世界贸易组织(WTO)的排行榜当中,越南的进出口排名有所上升。具体而言,2007年越南的出口金额排在第50位,但到2017年已挤到第27位,同时2007年排在第41位的越南进口金额到2017年已挤到第25位。在该章节也呈现了越南近几年的燃料贸易情况。本研究主要确定越南燃料贸易、越南与贸易伙伴国燃料进出口的影响因素。通过对燃料贸易总量,尤其是燃料进出口现状的分析,本研宄将基于2010-2017年阶段的数据来测算越南和贸易伙伴国的人口、经济发展的区别、距离、作为经济组织的成员国、殖民关系等因素对贸易关系的影响。同时本文也提出推动越南国内能源行业发展的建议。第二章主要梳理关于进出口、两国双方贸易以及引力模型应用的文献。该章节主要涉及到贸易绝对优势理论、比较优势理论、H-0模型(赫克歇尔-俄林)等等。同时也涉及到越南国内外的相关研究。第三章具体阐述研宄方法及数据搜集步骤,同时也提到研宄过程中所遇到的困难及研究的局限。本文采用定量的方法来揭示经济规模、人口数量、距离、作为经济组织成员国、殖民关系等因素对越南燃料贸易、越南与贸易伙伴国燃料进出口的影响。本文使用二手数据进一步统计分析来测算并验证燃料贸易总额、越南与贸易伙伴国燃料进出口总量之间的关系。数据来源于2010-2017年阶段世界综合贸易方案(WITS)、国际货币基金组织(IMF)、越南海关(Vietnam Customs)以及CEPII等数数据库。通过引力模型揭示了越南国内及贸易伙伴国的市场规模、越南与贸易伙伴国之间的距离、过去的殖民关系以及亚洲太平洋经济合作组织(APEC)成员国对燃料贸易及进出口的影响。根据越南的实际情况,引力模型公式如下:lnTotal=α+r In(GdP)+α In(GdP)+α In(POP)+α In(POP)+α In(distance+αAPEC+αCol)+ε在搜集2010-2017年阶段越南和40个贸易伙伴国的相关数据的过程中,有些国家在所观察阶段初期并没有得到相应数据,因此,本研宄只能呈现316个相应数据(理论上讲,研究对象包括40个国家,时间段为8年,就有320个相应数据)。然而,考虑到这些国家对越南燃料贸易总额所占的比例,他们仍然被放在研究范围之

关键词：越南燃料交易引力模型

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Three-dimensional ultrasound subwavelength arbitrary focusing with broadband sparse metalens

引用

Science China(Physics,Mechanics & Astronomy) 2022年第2期65卷 50-56页

作者： Xue Jiang JiaJie He ChuanXin Zhang HuaLiang Zhao WeiQi Wang deAn ta Cheng-Wei Qiu Center for Biomedical Engineering School of Information Science and TechnologyFudan UniversityShanghai 200433China department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore

Ultrasound focusing in three-dimensional(3 d)space is of crucial and enduring significance in a variety of biomedical and industrial *** ultrasound focusing based on active phase array or passive geometry of bulky size is unable to realize the 3 d arbitrary focusing with subwavelength *** metamaterial of complex deep-subwavelength microstructure has facilitated the advanced airborne-sound-focusing but is inevitably not applicable for underwater ultrasound,restricted by the law between the multi-modes coupling/thermal viscosity and the feature size of the ***,we aim to circumvent the restriction by increasing the feature size of the metamaterial while keeping the compact overall geometry,and realize the robust subwavelength ultrasound focusing with the sparse metalens of the wavelength-scale *** theoretically propose and demonstrate numerically and experimentally the broadband arbitrary ultrasound focusing in 3 d *** axial and off-axis ultrasound focusing with the subwavelength resolution(FWHMd by the spatially sparse and compact metalens within one-octave *** advantages of 3 d freewheeling focusing,subwavelength resolution,spatial sparsity,geometric simplicity,and broadband,the sparse metalens would offer more initiatives to advanced researches in ultrasound focusing and empower applications such as precise biomedical imaging and therapy,nondestructive evaluation,integrated and multiplexed ultrasound devices.

关键词： broadband ultrasound focusing sparse metalens subwavelength resolution three-dimensional focusing

来源：

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

Image Restoration Using Hybrid Features Improvement on Morphological Component Analysis

引用

Journal of Electronic Science and Technology 2019年第4期17卷 371-381页

作者： der-Chang Tseng Ru-Yin Wei Ching-ta Lu Ling-Ling Wang the department of Electronic Engineering National Taipei University of TechnologyTaipei 10608 Quanta Computer Inc. Taipei 11167 the department of Information Communication Asia UniversityTaichung 41354

Images are generally corrupted by impulse noise during acquisition and *** deteriorates the quality of *** remove corruption noise,we propose a hybrid approach to restoring a random noisecorrupted image,including a block matching 3d(BM3d)method,an adaptive non-local mean(ANLM)scheme,and the K-singular value decomposition(K-SVd)*** the proposed method,we employ the morphological component analysis(MCA)to decompose an image into the texture,structure,and edge ***,the BM3d method,ANLM scheme,and K-SVd algorithm are utilized to eliminate noise in the texture,structure,and edge parts of the image,*** results show that the proposed approach can effectively remove interference random noise in different parts;meanwhile,the deteriorated image is able to be reconstructed well.

关键词： Adaptive non-local mean(ANLM) block matching 3d(BM3d) image restoration morphological component analysis(MCA) singular value decomposition(SVd).

来源：

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

Epidemiology of Renal Failure in Children at the Pediatric University Hospital Charles de-Gaulle of Ouagadougou (Burkina Faso)

引用

Open Journal of Pediatrics 2016年第1期6卷 141-148页

作者： Coulibaly Gérard Savadogo Hamidou Bakoné B. Evariste Karambiri Adama Roger Kouéta Fla hien Kpienoba Manan Champion Gérard Lengani Adama Yé diarra department of Nephrology and Hemodialysis University Hospital Center Yalgado Ouedraogo Ouagadougou Burkina Faso department of Medical Pediatrics Pediatrics University Hospital Center Charles De-Gaulle Ouagadougou Burkina Faso Pediatrics Nephrology Service Pediatrics Federation CHU Angers Cedex France

Objective: Renal failure (RF) is a serious condition that is still insufficiently evaluated in our context. We wanted to know its epidemiology at the Pediatrics University Hospital Center Charles de-Gaulle (PUHC-CdG) of Ouagadougou. Patients and Methods: We retrospectively studied all children aged from three to fifteen years old who were diagnosed with renal failure (RF) in the department of Medical Pediatrics, from January 1, 2011 to december 31, 2013. RF was defined by a glomerular filtration rate (GFR) less than 80 mL/min/1.73m2, estimated by the formula of Pottel et al., which ignored the size that was rarely found in the medical records. The department constantly lacked pediatric blood pressure monitors or urinary strips. Results: In total, 119 cases of RF (3.3% of all admissions) were collected. They were about acute RFs (ARFs), chronic RFs (CRFs), and Unclassified RFs (URFs), respectively in 28.6%, 2.5% and 68.9% of cases. The overall average age of patients was 6.7 ± 3.4 years old. The average GFR was 35.2 ± 22.2 mL/min/1.73m2. The mechanism of ARF was presumed to be organic in 26 cases (76.5%). The most common presumed etiology was malaria (47.9%). Twelve patients (10.1%) died. Conclusion: RF was common at the PUHC-CdG but it was unclassified in over half of the cases. The diagnosis was based on the estimation of the GFR by Pottel et al.’s formula which was a good alternative to the Schwartz’s formula. The improvement of human and material resources would certainly help for a screening and characterization of RF at the PUHC-CdG.

关键词： Burkina Faso Epidemiology Glomerular Filtration Rate Pediatrics Renal Failure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

社交媒介下品牌拟人化沟通对营销效力的影响

社交媒介下品牌拟人化沟通对营销效力的影响

引用

作者： doan Minh hien 中南财经政法大学

学位级别：硕士

随着改革开放的深入发展,中国市场经济下的商业活动在近十几年获得了空前的发展。与此同时,随着商业竞争的日益加剧,市场中的营销理念也不断更新。尤其随着互联网的发展,越来越多的企业重视以消费者为中心,通过各种人性化和个性化的手... 详细信息

随着改革开放的深入发展,中国市场经济下的商业活动在近十几年获得了空前的发展。与此同时,随着商业竞争的日益加剧,市场中的营销理念也不断更新。尤其随着互联网的发展,越来越多的企业重视以消费者为中心,通过各种人性化和个性化的手段来提高消费者的满意度和购物意愿,其中拟人化营销是这些营销活动中常常被采用的手段。纵观消费市场,“三只松鼠”、“小茗同学”、“张君雅”、“江小白”日常中随处可见的品牌,他们都为消费者勾勒出了生龙活虎的人物形象,在市场中赢得了一大批消费者的喜爱。拟人化是一种内在的人类倾向,并受到了学者们的大量关注。已有的研究已从产品形象、品牌形象、金钱、绿色产、亲社会行为、旧物品等对象进行拟人化做出了探讨。同时,在现有的关于拟人化沟通的研究中大多集中在消费者品牌态度、购买意愿等方面,而较少地关注拟人化沟通对消费者转发意愿的影响。而随着互联网的发展,消费者的口碑关系着企业的发展,消费者的口碑在网络中常常反映为转发意愿。那么,这种拟人化的沟通对消费者的转发意愿和品牌评价是否有所影响呢?如果答案是肯定的,那么影响方向又是怎样的?同时这一效应的潜在机制以及边界条件又是什么呢?在对拟人化营销的相关文献进行梳理之后,本文在前人研究的基础上提出了本文的研究模型,并通过实验设计、发放问卷、采集数据和数据分析,验证了不同品牌沟通对营销效果的影响。具体而言,本文前后共通过一个前测和三个正式实验来检验模型中的假设。前测对不同的实验材料进行检验,筛选出符合实验标准的实验材料。三个正式实验的结果表明,与采用非拟人化沟通相比,采用拟人化品牌沟通能够增强消费者的转发意愿,提高消费者的评价（实验一）,这是因为相比于正常的品牌沟通,拟人化的品牌沟通使人们感到更加独特、更加别具一格,有更强的趣味性感知,而根据消费者的印象管理动机,消费者更倾向于分享有趣的信息以提升自己在他人心中的形象,因而消费者有强烈的转发意愿。不仅如此,拟人化的品牌沟通相较于正常的沟通能够让消费者感到更加亲近,减少对品牌的防御机制,从而拉近与消费者之间的社交距离,增加消费者的信任与品牌评价（实验二）;而这一效应仅发生在拟人化倾向高的消费者中,对于拟人化倾向低的消费者,拟人化沟通与非拟人化沟通在品牌评价和转发意愿上并无显著差异（实验三）。最后,根据本文所得出的结论,为企业及市场营销人员提供营销意见与建议,为企业在营销活动中提供理论指导,以期提高企业的营销绩效。同时总结了本研究的局限以及未来的研究方向。

关键词：拟人化沟通营销效力感知趣味性社交距离拟人化倾向

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Accuracy assessment of mine walls＇ surface models derived from terrestrial laser scanning

引用

International Journal of Coal Science & Technology 2018年第3期5卷 328-338页

作者： Nguyen Quoc Long Michal M. Buczek La Phu hien Sylwia A. Szlapinska Bui Xuan Nam Nguyen Viet Nghia Cao Xuan Cuong department of Mine Surveying Hanoi University of Mining and Geology Hanoi Vietnam department of Mine Surveying AGH University of Science and Technology Kxakow Poland department of Surveying and Spatial d.ta Analysis Hanoi University of Mining and Geology Hanoi Vietnam department of Surface Mining Hanoi University of Mining and Geology Hanoi Vietnam

The monitoring of highwall slopes at open-pit mines is an important task to ensure safe mining. For this reason, several techniques such as total station, radar, terrestrial Light detection and Ranging （LIdAR） can be employed for surface measurement. The objective of this study is to investigate mesh algorithms, which can be used to interpolate 3d models of pit walls. Experiments were carried out at Coc Sau open-pit mine at Quang Ninh province of Vietnam, and at experimental mine of Akademia Gtrniczo-Hutnicza University of Science and Technology in Cracow, Poland. First, 3d point cloud d.ta for the study area was acquired by using terrestrial LIdAR, then was used to generate mesh surfaces using three algorithms--delaunay 2.5d XY Plane, delaunay 2.5d Best Fitting Plane, and Mesh from Points. After that, the results were rectified and optimized. Subsequently, the optimized meshes were used for generation of non-uniform rational basis spline （NURBS） surfaces. Then, the NURBS surface accuracy was assessed. The results showed that the average distance between surface and point cloud was within range of 5.6-5.8 mm with deviation of 6.2-6.8 mm, depending on the used mesh. Additionally, the quality of surfaces depends on the quality of input d.ta set and the algorithm used to generate mesh network, and the accuracy of computed NURBS surfaces fitting into pointset was 4-5 times lower than that of optimized mesh fitting. However, the accuracy of the final product allows determining displacements on the level of centimeters.

关键词： Polygon mesh network NURBS surface LIdAR - Open-pit mine Highwall slope

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

diagnosis of osteoporosis based on multi-scale wavelet parameters of ultrasonic guided waves

引用

Chinese Journal of Acoustics 2017年第4期36卷 429-438页

作者： SONG Xiaojun ta de'an MOILANEN Petro department of Electronic Science and Technology Shanghai University of Electric Power department of Electronic Engineering Fudan University Shanghai key Laboratory of Medical Image Processing and Computer Assisted Surgery Fudan University department of Physics Jyvaskyla University

Evaluating bone regularly is important to prevent and control the disease of osteoporosis. Impact of osteoporosis on ultrasonic guided waves propagating in human long bones is studied in this paper. Multi-scale wavelet transform is proposed to process the received guided waves, and by analyzing energy changes in d.tail components of high order wavelet at different propagating distance to assess if osteoporosis happened. The guided waves signals are collected from the tibias of 13 volunteers. Based on the analysis of multi-scale wavelet transform, the high order d.tail components d6 and d5 changed dramatically with the propagation of ultrasonic guided waves along long bones, which means these 7 volunteers are diagnosed with osteoporosis. Compared with X-ray diagnosis, the effectiveness of this method can reach 92.3% in 13 volunteers. This suggests the multi-scale wavelet transform method is potential in ultrasonic assessment of bone quality.

关键词： osteoporosis wavelet guided ultrasonic bones dramatically regularly propagating transducer cortical

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：