检索结果-南通市图书馆

The 16th Annual Conference of Hong kong Society of Theoretical and Applied mechanics 2012、The 1st mainland-Hong kong Youth Forum on mechanics 2012、The 8th Shanghai-Hong kong Forum on mechanics and Its Application 2012

作者： S.k.Lai Abraham Y.S.Tang k.m.Leung Gilberto k.k.Leung k.W.Chow Department of mechanical Engineering University of Hong Kong Division of Neurosurgery Department of SurgeryLi Ka Shing Faculty of MedicineUniversity of Hong KongQueen Mary Hospital

Intracranial aneurysm,a localized dilation of arterial blood vessels in the brain,is a severe cerebrovascular *** appropriate medical treatment,the rupture of intracranial aneurysms will result in high mortality rate due to excessive bleeding into the cavity surrounding the *** modern technological advances,endovascular stenting technique has now proven to be one effective technique in the clinical management of intracranial *** prime advantage of endovascular intervention over traditional open surgery is that the former procedure is less invasive,and thus a shorter recovery time will *** a mechanical point of view,a metallic stent,serving as a flow diverter,can be deployed to cover the entire aneurysm *** the blood flow inside the aneurysmal sac becomes stagnant,and thrombus formation is likely to *** is expected that a larger extent of thrombosis is capable of reducing the risk of growth and rupture of *** assess this clinical objective quantitatively,we construct a three-dimensional(3D) aneurysm model (see Fig.1) to investigate the blood flow patterns in stented and non-stented *** many idealized models with straight or curved parent blood vessel,the aneurysm of the current model is placed at the bifurcation point of cerebral arteries,a geometric configuration occurring frequently for many *** fluid dynamics techniques are applied to perform the blood flow *** inlet and outlet boundary conditions of this model are subjected to pulsatile velocity and pressure waveforms *** on the present study,the impact of hemodynamic and biomechanical factors on the aneurysm can be *** quantitative findings can also provide valuable information for clinical practitioners to understand and predict the hemodynamic behaviour in patient-specific cases.

关键词： A Computational Fluid Dynamics Study on the Endovascular Treatment of Intracranial Aneurysms

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

Dilatometric Sintering of Ti-2A1 and Ti-5AI Elemental Powders

引用

Journal of materials Science & Technology 2007年第3期23卷 363-366页

作者： Bharat B.PANIGRAHI N.Subba REDDY karabi DAS m.m.GODkHINDI Department of metallurgical and materials Engineering Indian Institute of Technology Kharagpur

The effect of Al addition （2 and 5 at. pct） on sintering kinetics of Ti power were investigated. Al reduces the sintering rates, sinter density, increases activation energy of sintering and accelerates the grain growth. Sintering was controlled by mixed mode, i.e. transient liquid phase sintering, formation of intermetallics, and Ti grain boundary diffusion in TiAl2 and other intermetallics.

关键词： Dilatometry Sintering Diffusion Activation energy

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

Headaches and Erectile Dysfunction medications at UTH-kara (Togo)

引用

World Journal of Neuroscience 2023年第4期13卷 228-235页

作者： Léhleng Agba Nyinèvi k. Anayo Hola k. Sikpa mensah k. Guinhouya Tchilabalo m. kpatcha Vinyo k. kumako Damelan kombate komi Assogba Agnon A. Balogou Neurology Department University Teaching Hospital of Kara University of Kara Kara Togo Neurology Department University Teaching Hospital of Campus University of Lomé Lomé Togo Urology-Andrology Department University Teaching Hospital of Kara University of Kara Kara Togo Neurology Department University Teaching Hospital of Sylvanus Olympio University of Lomé Lomé Togo Neurology Department Regional Hospital of Kara University of Kara Kara Togo

Introduction: Headaches are a common symptom affecting individuals worldwide, including in the tropical zone, and have been extensively studied in Togo. Phosphodiesterase-5 inhibitors, commonly prescribed for erectile dysfunction, are known to induce headaches, yet there is a lack of research on this topic in sub-Saharan Africa and Togo. methods: A cross-sectional study conducted from February 1st to June 30th, 2023, including adult patients seeking erectile dysfunction treatment and prescribed PDE-5 inhibitors. Results: A total of 28 patients were included in the study, with an average age of 34.46 ± 7.5 years. The age group of 30 - 39 years was the most represented (53.57%). Among the participants, 67.86% had a history of chronic headaches. During the intake of PDE-5 inhibitors, 71.43% reported the onset of headaches. Among the 19 patients with chronic headaches, 68.42% developed headaches following PDE-5 inhibitor use (RR = 0.88, 95% CI: 0.55 - 1.40, p = 0.484). The characteristics of the induced headaches were similar to the patients’ pre-existing headaches in 78.95% of cases. Additional symptoms included nasal congestion (36.84%) and an urge to have a bowel movement (26.32%). Sildenafil (75.00%) and Tadalafil (25.00%) were the primarily prescribed PDE-5 inhibitors. The incidence of headaches did not significantly differ between the two groups (RR = 1.33, 95% CI: 0.67 - 2.64, p = 0.306). Treatment for the induced headaches involved self-medication with paracetamol (65.00%) and nonsteroidal anti-inflammatory drugs (NSAIDs) (35.00%). Conclusion: Headaches induced by PDE-5 inhibitors are a well-established reality, emphasizing the need for caution and warning in patients with pre-existing headache conditions, while individualized approaches are necessary to address the potential interplay between migraine medications and erectile dysfunction treatments.

关键词： Headache Phosphodiesterase-5 Inhibitors Erectile Dysfunction Togo Sub-Saharan Africa

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

most ankle sprain research is either false or clinically unimportant:A 30-year audit of randomized controlled trials

引用

Journal of Sport and Health Science 2021年第5期10卷 523-529页

作者： Chris m.Bleakley mark matthews James m.Smoliga School of Health Science Ulster UniversityCounty AntrimNorthern IrelandBT370QBUK School of Sport Ulster UniversityCounty AntrimNorthern IrelandBT370QBUK Department of Physical Therapy Congdon School of Health ScienceHigh Point UniversityHigh PointNC 27268USA

Background:Lateral ankle sprain is the most common musculoskeletal *** clinical research in this field is growing,there is a broader concern that clinical trial outcomes are often false and fail to translate into patient ***:We audited 30 years of experimental research related to lateral ankle sprain management(n=74 randomized controlled trials)to determine if reports of treatment effectiveness could be validated beyond statistical ***:A total of 77%of trials reported positive treatment effects,but there was a high risk of false *** trials were unregistered and relied solely on statistical significance,or lack of statistical significance,rather than on interpreting key measures of minimum clinical importance(e.g.,minimal detectable change,minimal clinically important difference).Conclusion:Future clinical trials must adopt higher standards of reporting and data *** includes consideration of the ethical responsibility to preregister their research and interpretation of clinical outcomes beyond statistical significance.

关键词： Ankle sprain False discovery mCID mDC

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

用最大似然法估算尾波Q——利用1986年长野县西部联合地震勘测资料

引用

世界地震译丛 1994年第1期25卷 23-30页

作者： m. Takahara k. Yomogida 华正兴国家地震局地球物理研究所

近震尾波是地壳和上地幔介质的不均匀性的一种标志,而尾波Q(Q_o)则是反映尾波介质衰减的参数。然而,用常规的最小二乘法估算的Q_o缺乏统计背景。利用1986年长野县西部联合地震勘测资料,本文提出了一种统计可靠的Q_o估算法——最大似然法... 详细信息

近震尾波是地壳和上地幔介质的不均匀性的一种标志,而尾波Q(Q_o)则是反映尾波介质衰减的参数。然而,用常规的最小二乘法估算的Q_o缺乏统计背景。利用1986年长野县西部联合地震勘测资料,本文提出了一种统计可靠的Q_o估算法——最大似然法,并证明了该方法的可靠性和实用性。首先,我们发现用最大似然法估算的Q_o是静态有效的,并可用X^2检验法验证其可靠性。其次我们用最大似然法估算了勘测区Ohtaki村周围的Q_o。低频段(达2Hz)Q_o均值为世界最低值之一,与恰好处在活断层区之上的场地相一致。

关键词：地震尾波Q 地震勘测资料

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

Effects of low-temperature oxidation on natural remanent magnetization of Chinese loess

Effects of low-temperature oxidation on natural remanent mag...

引用

中国科学院地质与地球物理研究所2002学术年会

作者： S.k.Banerjee m.J.Jackson Institute for Rock magnetism Department of Geology and GeophysicsUniversity of Minnesota

This study systematically investigates changes in both compositions and grain-sizes of magnetic minerals in the Chinese loess/paleosol samples(Yichuan,China) during thermal demagnetization *** 100 and 200°,(1) Hc and Hcr significantly decrease while mrs and ms remain stable;(2) concentration of the multi-domain(mD) grains increases while that of superparamagnetic(SP) grains decreases;and(3) there exists the abnormal behavior of the thermal demagnetization in the natural remanent magnetization(NRm).In addition,the corresponding changes in all these parameters are gradually muted with the increase of the pedogenesis *** results indicate that the observed alteration probably relates to reducing processes caused by the burning of the organic matter in *** the thermal treatment,the mD grains in loess samples had been partially altered in nature by low-temperature oxidization(LTO).This CRm can be sufficiently attenuated or even removed by the reducing process between 100 and 200°during the thermal treatment and has no apparent harmful effects on the characteristic remanent magnetization (ChRm) between 300 and 500°.

关键词： chemical remanent magnetization low-temperature oxidation Verwey transition natural remanent magnetization Chinese loess

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

Effect of microwave treatment on tensile properties of sugar palm fibre reinforced thermoplastic polyurethane composites

引用

Defence Technology（防务技术） 2018年第4期14卷 287-290页

作者： A.A.mohammed D.Bachtiar m.R.m.Rejab J.P.Siregar Structural materials and Degradation Focus Group Faculty of Mechanical EngineeringUniversity of Malaysia Pahang materials Engineering Department University of TechnologyBaghdadIraq

The effect of microwave treatment on the tensile properties of treated sugar palm fibre with 6% NaOH reinforced thermoplastic polyurethane composites was investigated. Firstly, the sugar palm fibres were treated by 6% alkali solution. Then, microwave treatment was used to treat the alkali treated sugar palm fibres. Three types of temperatures(i.e. 70, 80 and 90℃) were applied in microwave treatment. The extruder and hot press machines were used to mixing the sugar palm fibres and polyurethane resin, and fabricate the composites. Tensile properties(i.e. tensile strength, tensile modulus and elongation at break) were studied by following the ASTm D-638 standard. The highest tensile strength was recorded 18.42 mPa with microwave temperature at 70℃ and 6% alkali pre-treatment. Therefore, the temperature 70℃ of microwave treatment may consider the best degree cent grate.

关键词： Tensile properties Sugar palm fibre Thermoplastic polyurethane Alkali treatment microwave method

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

非洲猪瘟病毒(malawi LIL 20/1株)k8R基因的表达与鉴定

引用

江苏农学院学报 1998年第2期19卷 1-7页

作者：孙怀昌 Linda k Dixon Parkhouse R m E 江苏农学院动物科学系

蛋白多肽二级结构的电脑预测表明，非洲猪瘟病毒（ＭａｌａｗｉＬＩＬ２０／１株）ｋ８Ｒ基因编码带有多个疏水氨基酸小区的２７ｋＤａ蛋白质。该基因的ＰＣＲ产物克隆入质粒ｐＧＥＸ－２Ｔ后，在大肠杆菌中表达４２～５４ｋＤａ不溶性... 详细信息

蛋白多肽二级结构的电脑预测表明，非洲猪瘟病毒（ＭａｌａｗｉＬＩＬ２０／１株）ｋ８Ｒ基因编码带有多个疏水氨基酸小区的２７ｋＤａ蛋白质。该基因的ＰＣＲ产物克隆入质粒ｐＧＥＸ－２Ｔ后，在大肠杆菌中表达４２～５４ｋＤａ不溶性ＧＳＴ－ｋ８Ｒ融合蛋白。此表达蛋白能被针对不同非洲猪瘟病毒株的猪免疫血清识别。在非洲猪瘟病毒细胞适应株感染的细胞中，针对ｋ８Ｒ大肠杆菌表达产物的单抗能检测出２７ｋＤａ特异病毒蛋白。进一步鉴定表明，ｋ８Ｒ基因编码的蛋白质为病毒非结构蛋白，不发生糖基化，出现于病毒感染周期的晚期，主要集中于靠近细胞核的病毒复制部位。用大肠杆菌表达的ＧＳＴ－ｋ８Ｒ融合蛋白免疫猪未能抵抗ＭａｌａｗｉＬＩＬ２０／１强毒株攻击。

关键词：猪基因表达鉴定/非洲猪瘟病毒

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

Ionic conductivity and relaxation studies in PVDF-HFP:PmmA-based gel polymer blend electrolyte with LiClO_(4) salt

引用

Journal of Advanced Dielectrics 2018年第1期8卷 37-49页

作者： khushbu Gohel D.k.kanchan Department of Physics Faculty of Science The M.S.University of Baroda Vadodara 390002GujaratIndia

Poly(vinylidene fluoride-hexafluropropylene)(PVDF-HFP)and poly(methyl methacrylate)(PmmA)-based gel polymer electrolytes(GPEs)comprising propylene carbonate and diethyl carbonate mixed plasticizer with variation of lithium perchlorate(LiClO_(4))salt concentrations have been prepared using a solvent casting *** characterization has been carried out using XRD wherein diffraction pattern reveals the amorphous nature of sample up to 7.5 wt.%salt and complexation of polymers and salt have been studied by FTIR *** morphology of the samples has been studied using scanning electron *** impedance spectroscopy in the temperature range 303-363k has been carried out for electrical *** maximum room temperature conductivity of 2.83×10^(-4) S cm^(-1) has been observed for the GPE incorporating 7.5 wt.%LiClO_(4).The temperature dependence of ionic conductivity obeys the Arrhenius *** increase in ionic conductivity with change in temperatures and salt content is *** number measurement is carried out by Wagner’s DC polarization *** tangent(tanδ)and imaginary part of modulus(m″)corresponding to dielectric relaxation and conductivity relaxation respectively show faster relaxation process with increasing salt content up to optimum value of 7.5 wt.%LiClO_(4).The modulus(m″)shows that the conductivity relaxation is of non-Debye type(broader than Debye peak).

关键词： Gel polymer electrolyte ionic conductivity transport number Wagner’s DC polarization impedance

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

Two cases of thyroid carcinoma producing granulocyte colony stimulating factor （G-CSF）

Two cases of thyroid carcinoma producing granulocyte colony ...

引用

2000国际暨第六届全国头颈肿瘤外科学术会议

作者： kitanishi T Suzuki m kitano H kitajima k Department of Otolatyngology Shiga University of medical Science ShigaJapan Department of Otolatyngology Shiga University of medical Science ShigaJapan Department of Otolatyngology Shiga University of medical Science ShigaJapan Department of Otolatyngology Shiga University of medical Science ShigaJapan

＜正＞Thyroid anaplastic carcinoma is a highly malignant tumor and a rapid increase in size, extension beyond the thyroid, widespread metastasis are characteristics of this aggressive carcinoma. The details of the poor prognosis in this carcinoma, however, are not clear. Recently one of the causes has been proposed to be closely related to granylocyte-colony stimulating factor （G-CSF） produced by the tumor cells. We encountered two cases of anaplastic carcinoma in the thyroid that exhibited rapid growth, giant

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

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：