检索结果-南通市图书馆

Review of the optimal timing and technique for extensor tendon reconstruction in composite dorsal hand wounds

Plastic and Aesthetic Research 2019年第8期6卷 1-9页

作者： Shelby Lies Asher Horowitz gordon lee Andrew Y.Zhang Department Plastic Surgery University Texas SouthwesternDallasTX 75390USA Department Plastic Surgery Stanford UniversityPalo AltoCA 94304USA

Aim: The management of complex dorsal hand wounds with extensor tendon loss is controversial. Treatment has focused on soft tissue coverage, but there is limited evidence comparing immediate vs. staged tendon reconstruction. This review evaluates existing literature to determine the optimal management of composite hand defects. Methods: A MEDLINE database review was performed including objective measurements such as number of operations, total active motion, grip strength, days to maximum range of motion (ROM), and return to work. Data extraction included demographics, surgical techniques, complications, and relative outcome. We compared primary and secondary staged reconstruction to correlate any significant differences in outcome and determine optimal timing and technique for extensor tendon reconstruction. We extracted information on flap types including regional and free tissue transfer with tendinous components vs. staged tendon grafts. Results: Comparison of outcomes showed that patients with immediate reconstruction had fewer operations, faster return to maximum ROM, and greater chance of returning to work. The most successful single stage flaps include the radial forearm, suitable for reconstructing one to three tendons and the dorsalis pedis for three or four tendons;however, there were significantly more complications in immediate reconstruction particularly regarding donor site morbidity. Pedicled flaps had better total active motion. The two-stage approach resulted in acceptable functional outcomes without significant complications. ;Conclusion: Immediate cutaneous tendinous flaps have clear advantages over staged approaches for reconstruction ofcomposite dorsal hand wounds. Benefits include less operations, faster time to maximum ROM, and higher percent of patients returning to work;however, significantly more flap related complications were seen. Immediate pedicled radial forearm provided the best total active motion with least complications. When pati

关键词： Composite dorsal hand wound flap extensor tendon reconstruction

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

Progressive trends in timing and imaging of lower extremity reconstruction

引用

Plastic and Aesthetic Research 2019年第12期6卷 26-36页

作者： Andrew Y.Zhang David Cholok gordon K.lee Department of Plastic Surgery University of Texas Southwestern Medical CenterDallasTXUSA Division of Plastic and Reconstructive Surgery Stanford UniversityPalo AltoCAUSA

The salvage of mangled lower-extremities after severe injury remains a daunting operative dilemma,but one that continues to evolve with advances in microsurgical and orthopedic ***,trends in clinical practice including the decision to salvage and timing of soft-tissue coverage are changing in concordance with improvements in wound care,flap selection for soft-tissue provision,and preoperative *** to these improvements,more complex wounds are increasingly eligible for *** remains unclear,however,whether success in limb salvage confers improved functional patient *** present a review of the literature tracing recent advances in the salvage of mangled extremities following traumatic injury,with a focus on practice trends regarding timing of reconstruction,operative approaches,and preoperative imaging.

关键词： Lower extremity reconstruction propeller flaps amputation microsurgery trauma

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

一种变逻辑门限值的车辆稳定性控制策略研究

引用

汽车工程 2015年第7期37卷 782-787页

作者：李寿涛马用学郭鹏程宗长富 lee gordon 吉林大学通信工程学院长春130022 吉林大学汽车仿真与控制国家重点实验室长春130022 圣地亚哥州立大学电子与计算机工程系加州92182

本文中提出一种变逻辑门限值的车辆稳定性控制策略,并重点对动态逻辑门限值的确定方法进行了深入的研究,以改善不同工况下车辆的稳定性。由于逻辑门限值受到行驶环境和运动状态的影响,因此利用模糊推理的方法分别确定横摆角速度偏差和... 详细信息

本文中提出一种变逻辑门限值的车辆稳定性控制策略,并重点对动态逻辑门限值的确定方法进行了深入的研究,以改善不同工况下车辆的稳定性。由于逻辑门限值受到行驶环境和运动状态的影响,因此利用模糊推理的方法分别确定横摆角速度偏差和质心侧偏角变化率的门限值;然后利用逻辑门限PI控制方法计算出附加横摆力矩;最后在电控液压制动(EHB)系统中实现了附加横摆力矩。仿真结果表明,当车辆失稳时,所提出的控制策略能及时对车辆进行稳定校正控制,提高了车辆行驶的安全性。

关键词：车辆稳定性动态逻辑门限值模糊控制器电控液压制动系统

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

Current applications of propeller flaps in reconstruction of trunk wounds

引用

Plastic and Aesthetic Research 2017年第11期4卷 204-208页

作者： Shawn Moshreif gordon K.lee Division of Plastic&Reconstructive Surgery Stanford University Medical CenterPalo AltoCA 94305USA

Aim: Propeller flaps provide excellent reconstructive options for defects of many etiologies. Trunk wounds are a commonly encountered issue for the plastic surgeon and multiple techniques to address them should be prepared for implementation. Propeller flaps are a subject rarely brought up as an option to address these wounds. The authors sought to elucidate this topic in the current plastic surgery literature available. Methods: A PubMed search was conducted based upon the defined inclusion and exclusion criteria and publications reviewed in detail. Search terms included 'trunk wound propeller flap', 'trunk propeller flap', and 'freestyle trunk wound flap'. Duplicate studies were excluded. Data was extracted from each study pertaining to trunk wounds and reconstructions with propeller flaps. Results: The electronic search yielded 49 results with 21 studies ultimately meeting inclusion criteria. A total of 365 flaps were described collectively amongst the included studies. Among them, 190 propeller flaps addressing trunk defects were performed across all studies reviewed to address a total of 165 defects of the trunk: 14 abdomen, 101 back, 50 chest defects and adjacent respective flaps were utilized for surgical reconstruction. Overall, cancer excision wounds were by far the most prevalent with 105 cases (59.0%). Defect sizes of those specified in the articles ranged from 2 cm × 5 cm to 30 cm × 24 cm. Of the 190 propeller flaps identified, 63 total complications were identified. The most common complication was 48 total cases of transient venous congestion (25.3%). The second most common complication was partial flap necrosis (6.3%). No total flap loss was noted. There were 2 cases of seroma (1.1%) and 1 case of wound breakdown (0.5%). Conclusion: Propeller flaps are a viable reconstructive option for trunk wounds and should be in the armamentarium of plastic and reconstructive surgeons. Few studies are available in the literature regarding propeller flap reconstruc

关键词： Propeller flaps trunk wounds microvascular dissection

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

Adsorption of Cholesterol on Carbon Powders

引用

Journal of Chemistry and Chemical Engineering 2010年第9期4卷 14-27页

作者： Jennifer lee gordon Thomas Roy Rybolt Christina Elizabeth Wells Department of Chemistry University of Tennessee at Chattanooga Chattanooga Tennessee 37403 United States

Carbon powders have the ability to remove cholesterol from solution by adsorption. Various combinations from among 12 different types of carbon powders （including two medical carbons）, having a wide range of surface area and porosity, were used to perform cholesterol adsorption experiments. The cholesterol concentration in a cyclohexane solvent （37 ~C, shaking 200 rpm） was detected at 215 nm using ultraviolet spectroscopy. Most adsorption occurred in the first 30 to 60 minutes. A Langmuir model was used to fit the amount of cholesterol adsorbed per gram of carbon. The medical carbon, Natural Elements Activated Charcoal, adsorbed 234 mg of cholesterol adsorption per gram of carbon. The experimental percentages of cholesterol removed from solution （maximum 98%） were correlated with nitrogen Branauer-Emmett-Teller （BET） surface areas and micro, meso, and macropore volume distributions. Surface area alone was not a suitable predictor of cholesterol adsorption. However, carbon powders exhibiting a large surface area along with significant meso and macropores were shown to be effective in adsorbing cholesterol from a nonpolar environment. Ingestion of a medically approved carbon powder with a large surface area and sufficient meso and macroporosity may be able to adsorb cholesterol in the intestinal tract and thereby lower cholesterol levels in the body.

关键词： Cholesterol adsorption capacity adsorption from solution Langmuir isotherm enterosorption porosity BET surface area carbon powder.

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

Detecting flap compromise:an updated review of techniques to monitor microsurgical flaps postoperatively in breast reconstruction

引用

Plastic and Aesthetic Research 2023年第1期10卷 322-338页

作者： Priscila C.Cevallos Daniel Najafali Thomas M.Johnstone Mimi R.Borrelli Oscar J.Manrique gordon K.lee Rahim S.Nazerali Division of Plastic&Reconstructive Surgery Department of SurgeryStanford University School of MedicinePalo AltoCA 94304USA Division of Plastic&Reconstructive Surgery Department of SurgeryThe Warren Alpert Medical School of Brown UniversityProvidenceRI 02903USA Carle Illinois College of Medicine University of Illinois Urbana-ChampaignUrbanaIL 61801USA Geisel School of Medicine Dartmouth UniversityHanoverNH 03755USA Division of Plastic&Reconstructive Surgery Department of SurgeryStrong Memorial HospitalUniversity of Rochester Medical CenterRochesterNY 14642USA

Breast reconstructive surgery utilizing free tissue transfer has revolutionized the restoration of aesthetic and functional outcomes for *** for the most routine free flap procedures,substantial hospital resources and costs are *** effectiveness of free flap surgery,along with any reconstructive procedure,hinges upon meticulous patient selection,thorough pre-operative planning,well-informed peri-operative decision-making,and diligent post-operative monitoring and care for the *** article presents a review of standard clinical care monitoring techniques during the post-operative period,as well as the diverse strategies currently employed for post-operative flap monitoring.

关键词： Flap monitoring flap salvage peri-operative monitoring post-operative monitoring

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

便携式手持设备的LED背光和装饰光

引用

电子产品世界 2005年第08B期12卷 68-69页

作者： gordon lee 飞思卡尔半导体公司

在手机、寻呼机和PDA等便携式手持设备中,传统上采用电致发光(EL)或LED驱动电路为屏幕和键盘提供背光,主要是为了在低照明度情况下方便阅读屏幕和进行键盘操纵.因此亮度是最关键的要求,颜色则不是那么重要,因为显示屏通常是单色的LCD.... 详细信息

在手机、寻呼机和PDA等便携式手持设备中,传统上采用电致发光(EL)或LED驱动电路为屏幕和键盘提供背光,主要是为了在低照明度情况下方便阅读屏幕和进行键盘操纵.因此亮度是最关键的要求,颜色则不是那么重要,因为显示屏通常是单色的LCD.因此只要显示屏的亮度足够并且能够容易地分辨出按键,电致发光(EL)或彩色LED的色调是完全可以接受的.

关键词： LED背光手持设备便携式装饰电致发光彩色LED 驱动电路显示屏 PDA

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

RTD测量系统设计要点

引用

今日电子 2016年第5期 35-38页

作者： gordon lee Maxim Integrated公司

工业领域测量最多的参数是温度。高精度温度测量为工业自动化应用提供关键数据,保证生产质量和安全。温度传感器的类型有很多种,每种类型都具有各自的优势和缺点。本文重点讨论一种最常见的温度传感器——电阻温度监测器（RTD）,介绍设... 详细信息

工业领域测量最多的参数是温度。高精度温度测量为工业自动化应用提供关键数据,保证生产质量和安全。温度传感器的类型有很多种,每种类型都具有各自的优势和缺点。本文重点讨论一种最常见的温度传感器——电阻温度监测器（RTD）,介绍设计要点,以优化测量精度。

关键词：测量系统设计 RTD 温度监测器温度传感器温度测量测量精度自热误差配置图温度误差激励信号

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

运用声学多普勒流速剖面仪施测易北河的流量

引用

水利水文自动化 1989年第3期 56-59页

作者： R.lee.gordon 狄文龙上海水文总站

本文提出的河道流量测算方法,基于直接测量水流刮面和横渡(易北河)的船速。用临时安装在船上的声学多普勒流速剖面仪(ADCP)获得资料。ADCP直接测量船下的水流剖面,依据这些流速剖面以及也用ADCP测得的河底跟踪速度来计算流量它既不需要... 详细信息

本文提出的河道流量测算方法,基于直接测量水流刮面和横渡(易北河)的船速。用临时安装在船上的声学多普勒流速剖面仪(ADCP)获得资料。ADCP直接测量船下的水流剖面,依据这些流速剖面以及也用ADCP测得的河底跟踪速度来计算流量它既不需要知道罗盘指示的航向,也不需要知道船支的实际位置,且横渡路径可为任意曲线,只要从河的一岸开始,到河的另一岸结束。对于由偶然误差和系统误差以及近水面、河底和岸边漏测数据所引起的流量估算不确定度已进行了研究。近水面和河底的漏测数据是最大的误差来源,除非这部分数据通过假定一些近似的剖面而得到修正。经过修正,总流量计算误差小于5％。

关键词：流量测算流速剖面仪易北河

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

Examination of DMT-based methods for evaluating the liquefaction potential of soils

引用

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第11期12卷 807-817页

作者： gordon Tung-Chin KUNG Der-Her lee Pai-Hsiang TSAI Sustainable Environment Research Center National Cheng Kung University Department of Civil Engineering National Cheng Kung University

The flat dilatometer test （DMT） has the potential to be a useful tool in the evaluation of liquefaction potential of soils. In practice, it is necessary to carefully examine existing DMT-based methods for evaluating liquefaction potential. We con- ducted the DMT and cone penetration test （CPT） in high liquefaction potential areas to examine the existing DMT-based methods for liquefaction potential evaluation. Specifically, the DMT and CPT were conducted side-by-side at each of six in-situ sites, and thus it is feasible to utilize those test results to validate the existing DMT-based methods. The DMT parameter, horizontal stress index （KD）, is used as an indicator for estimating liquefaction resistance of soils in terms of cyclic resistance ratio （CRR）. The analysis results revealed that the existing KD-based liquefaction evaluation methods would overestimate the CRR of soils, which leads to overestimation of the factor of safety against liquefaction. Also, the estimations of DMT-KI~ values by using the CPT-qc as well as the correlation between DMT-KD and CPT-qc proposed by the previous studies would be significantly smaller than field measurements. The results reflected that further validation of the existing DMT-based methods for liquefaction evaluation is desirable.

关键词： Liquefaction Flat dilatometer test (DMT) Horizontal stress index Earthquake

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：