检索结果-南通市图书馆

Photoselective vaporization of the prostate in the treatment of benign prostatic hyperplasia

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2005年第19期118卷 1610-1614页

作者： FU Wei-jun HONG Bao-fa yang Yong CAI Wei GAO Jiang-ping WANG chun-yang WANG Xiao-xiong Department of Urology General Hospital of People＇s LiberationArmy Beijing 100853 China

Background The treatment of symptomatic benign prostatic hyperplasia （BPH） remains a challenge for most urologic surgeons. We studied a cumulative cohort of patients with symptomatic benign prostatic hyperplasia （BPH） who underwent photoselective vaporization of the prostate （PVP） and evaluated the efficacy and safety of this procedure. Methods A total of 196 patients with lower urinary tract obstruction symptoms secondary to BPH were treated using laser vaporization of the prostate under sacral canal anesthesia at our institutions. The therapeutic results were assessed using following variables ： the safety and efficacy of sacral anesthesia, blood loss, operative time, indwelling catheterization. Preoperative and perioperative parameters were evaluated in the international prostate symptom score （ IPSS）, quality of life score （ QoL）, maximal urinary flow rate （ Qmax）, post-void residual urine volume （PVR） and the change of sexual function. Patients were also assessed for 3-month follow up. Results PVP was performed successfully for all patients. There were 195 patients under sacral anesthesia and 1 patient under epidural anesthesia. Mean operative time was （45.2±18.5 ） minutes. The mean IPSS decreased from （26.6±3.2 ） to （5.6±1.4） and the QoL score decreased from （5.7±0.4） to （ 1.6±0. 5 ）, respectively （ P 〈 0. 05 ）, while mean Qmax increased from （6.7±2.5 ） ml/s preoperatively to （ 19.6± 2.4 ） ml/s, PVR decreased from 158.4 to 25.8 ml, respectively （ P 〈 0.05）. Average catheterization time was （ 1.8±0. 9） days. There was no significant blood loss or fluid absorption during the period of PVP. Complications consisted of transient dysuria in 3 patients （1.5%）, delayed gross hematuria in 5 patients （2. 5% ）, respectively. Significant improvement in clinical outcomes were noted as early as 3 months after PVP treatment. Conclusions PVP is considered as a high satisfaction rate by complication. Hence, PVP is a novel, safe, effective and minimal symptomatic BPH. patient a

关键词： benign prostatic hyperplasia prostatectomy laser surgery

视频压缩感知中基于快速搜索的迭代多假设算法

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

华南理工大学学报（自然科学版） 2017年第7期45卷 107-112,125页

作者：杨春玲熊光银戴超华南理工大学电子与信息学院广东广州510640

针对观测域和像素域两阶段多假设预测重构方案在低采样率时重构效果不理想,且对于运动剧烈的序列预测精度不够、时间复杂度较高等问题,在两阶段多假设预测的基础上,提出了基于快速搜索的迭代多假设预测重构算法.该算法利用像素域分块的... 详细信息

针对观测域和像素域两阶段多假设预测重构方案在低采样率时重构效果不理想,且对于运动剧烈的序列预测精度不够、时间复杂度较高等问题,在两阶段多假设预测的基础上,提出了基于快速搜索的迭代多假设预测重构算法.该算法利用像素域分块的灵活性,基于重叠块在像素域迭代预测重构;针对运动较快的序列,采用十字形联合区域搜索方法以减小大范围搜索的算法复杂度;同时利用图像空间相关性进行帧间/帧内自适应假设块的模式选择与已有算法相比,文中重构算法进一步削弱了块效应,降低了大范围搜索的运算复杂度,提高了重构性能.

关键词：视频压缩感知多假设预测假设块像素域迭代预测预测精度时间复杂度

Effect of Optimized Concentrations of Basic Fibroblast Growth Factor and Epidermal Growth Factor on Proliferation of Fibroblasts and Expression of Collagen： Related to Pelvic Floor Tissue Regeneration

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2018年第17期131卷 2089-2096页

作者： Yuan-Yuan Jia Jing-Yi Zhou Yue Chang Fang An Xiao-Wei Li Xiao-Yue Xu Xiu-Li Sun chun-yang xiong Jian-Liu Wang Department of Obstetrics and Gynecology Peking University People's Hospital Beijing 100044 China Beijing Key Laboratory of Female Pelvic Floor Disorders Beijing 100044 China Department of Mechanics and Bioengineering College of Engineering Peking University Beijing 100871 China

Background： Fibroblasts were the main seed cells in the studies of tissue engineering of the pelvic floor ligament. Basic fibroblast growth factor （bFGF） and epidermal growth factor （EGF） were widely studied but at various concentrations. This study aimed to optimize the concentrations of combined bFGF and EGF by evaluating their effects on proliferation and collagen secretion of fibroblasts. Methods： Fibroblasts were differentiated from rat adipose mesenchymal stem cells （ADSCs）. Flow cytometry and immunohistochemistry were used for cell identification. The growth factors were applied at concentrations of 0, 1, 10, and 100 ng/ml as three groups：（1） bFGF alone, （2） EGF alone, and （3） bFGF mixed with EGF. Cell proliferation was evaluated by Cell Counting Kit-8 assays. Expression of Type I and III collagen （Col-I and Col-1II） mRNAs was evaluated by real-time quantitative reverse transcription-polymerase chain reaction. Statistical analysis was performed with SPSS software and GraphPad Prism using one-way analysis of variance and multiple t-test. Results： ADSCs were successfully isolated from rat adipose tissue as identified by expression of typical surface markers CD29, CD44, CD90, and CD45 in flow cytometry. Fibroblasts induced from ADSC, compared with ADSCs, were with higher mRNA expression levels of Col I and Col III （F = 1.29, P = 0.0390）. bFGF, EGF, and the mixture ofbFGF with EGF can enhanced fibroblasts proliferation, and the concentration of 10 ng/ml of the mixture ofbFGF with EGF displayed most effectively （all P 〈 0.05）. The expression levels of Col-I and Col-Ill mRNAs in fibroblasts displayed significant increases in the 10 ng/ml bFGF combined with EGF group （all P 〈 0.05）. Conclusions： The optimal concentration of both bFGF and EGF to promote cell proliferation and collagen expression in fibroblasts was 10 ng/ml at which fibroblasts grew faster and secreted more Type I and III collagens into the extracellular matrix, which might contribute to the stabilit

关键词： Adipose Mesenchymal Stem Cells Basic Fibroblast Growth Factor Epidermal Growth Factor Fibroblasts Tissue Engineering

Photoselective vaporization of the prostate in the treatment of benign prostatic hyperplasia

在线全文

学校读者我要写书评

暂无评论

中华医学杂志(英文版) 2005年第19期000卷 28-32页

作者： FU Wei-jun,HONG Bao-fa,yang Yong,CAI Wei,GAO Jiang-ping,WANG chun-yang and WANG Xiao-xiong Department of Urology, General Hospital of People’s Liberation Army, Beijing 100853, China Department of Urology General Hospital of People's Liberation Army Beijing 100853 China

Benign prostatic hyperplasia (BPH) is a common disease in aged men. The traditional transurethral resection of the prostate (TURP) has been the best standard procedure in treating BPH for decades. However, the complication morbidity associated with TURP has remained relatively constant at 18%.~1 Recently the photoselective vaporization of the prostate (PVP) with a high powered potassium-titanyl-phosphate (KTP) laser is a rapidly emerging technique and an attractive alternative for the management of obstructive BPH.~2 Early and limited clinical results of PVP have demonstrated minimally invasive techniques and equivalent efficacy and greater safety in comparison with those of TURP.~3 We evaluated our early clinical experience with PVP in the treatment of Chinese *** Wei-jun, HONG Bao-fa, yang Yong, CAI Wei, GAO Jiang-ping, WANG chun-yang and WANG Xiao-xiong

关键词： benign prostatic hyperplasia · prostatectomy · laser surgery

Recent Advances in Self-assembled Nano-therapeutics

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2018年第3期36卷 322-346页

作者： chun-xiong Zheng Yu Zhao yang Liu Key Laboratory of Functional Polymer Materials of Ministry of Education Institute of Polymer ChemistryCollege of Chemistryand State Key Laboratory of Medicinal Chemical BiologyNankai UniversityTianjin 300071China

The applications of nanotechnology in biomedicine have gained considerable attentions in recent years owing to the great enhancement of therapeutic *** of self-assembly into nanotechnology has brought tremendous convenience during the formation of *** on distinctive methods of self-assembly,nano-therapeutics have beer~developed to ar~impressive stage with the ability to perform site-specific delivery with temporal and spatial *** review focuses on the recent advances in the preparing methods for nano-therapeutics,and their applications in the treatments of diseases.

关键词： Self-assembly Nano-therapeutics Hydrophobic effect Electrostatic interaction Supramolecular host-guest interaction

在线全文

学校读者我要写书评

暂无评论

血细胞形态室间质量评价结果分析

贵阳中医学院学报 2017年第5期39卷 50-52页

作者：张航杨春英杨梅熊丽娟宋婷贵阳中医学院第二附属医院贵州贵阳550003

目的:总结过去10年参加血细胞形态学EQA的经验与不足,以求改进提高。方法:对2007~2016年参加的全国血细胞形态学EQA结果进行统计回顾性分析。结果:在295幅有效血细胞质评图片中,全国参评实验室平均符合率86.9%,本院符合率90.2%,本院骨... 详细信息

目的:总结过去10年参加血细胞形态学EQA的经验与不足,以求改进提高。方法:对2007~2016年参加的全国血细胞形态学EQA结果进行统计回顾性分析。结果:在295幅有效血细胞质评图片中,全国参评实验室平均符合率86.9%,本院符合率90.2%,本院骨髓细胞比末梢血细胞错报率高7.5个百分数,出现频率最高的是异型淋巴细胞18次。结论:参加血细胞形态EQA提高了检验人员血细胞识别能力,有效保证了血细胞形态学检验质量。

关键词：血细胞形态室间质量评价

Musielak–Orlicz BMO-type Spaces Associated with Generalized Approximations to the Identity

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2014年第11期30卷 1917-1962页

作者： Shao xiong HOU Da chun yang Si Bei yang School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Complex SystemsMinistry of Education School of Mathematics and Statistics Lanzhou University

Let X be a space of homogenous type and ψ： X × [0,∞） → [0,∞） be a growth function such that ψ（·,t） is a Muckenhoupt weight uniformly in t and ψ（x,·） an Orlicz function of uniformly upper type 1 and lower type p ∈（0,1].In this article,the authors introduce a new Musielak–Orlicz BMO-type space BMOψA（X） associated with the generalized approximation to the identity,give out its basic properties and establish its two equivalent characterizations,respectively,in terms of the spaces BMOψA,max（X） and BMOψA（X）.Moreover,two variants of the John–Nirenberg inequality on BMOψA（X） are *** an application,the authors further prove that the space BMOψΔ1/2（Rn）,associated with the Poisson semigroup of the Laplace operator Δ on Rn,coincides with the space BMOψ（Rn） introduced by Ky.

关键词： Growth function BMO-type space approximation to the identity John–Nirenberg inequality Carleson measure

Effect of stress-relief annealing on thermal fatigue cracks for die-casting die steels

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2024年第5期31卷 1164-1176页

作者： Zhi-xiong Bai Xiao-chun Wu School of Materials Science and Engineering Shanghai UniversityShanghai200444China

The effect of stress-relief annealing at different stages of thermal fatigue tests on crack growth was investigated using a self-built thermal cycle *** results showed that annealing could limit crack expansion *** reduced dislocation density and released the accumulation of residual *** addition,the strain accumulation in carbides was reduced by this *** was also found that double annealing was even more effective at inhibiting crack expansion compared to single stress-relief *** 1000 cycles,the maximum crack length was reduced by 31.1%and 45.2%for the samples after using the optimal single and double annealing processes,*** single stress-relief annealing,earlier annealing provides more benefit in delaying crack ***,effective double stress-relief annealing requires a suitable time interval between the annealing ***,after 800 cycles,surface hardness decreased significantly accompanied by an increase in the size and number of carbides,and cracks expanded predominantly along grain boundaries.

关键词： Thermal fatigue Steel Carbide Stress-relief annealing Dislocation Residual stress

Chaotic microlasers caused by internal mode interaction for random number generation

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

Light(Science & Applications) 2022年第7期11卷 1565-1574页

作者： chun-Guang Ma Jin-Long Xiao Zhi-xiong Xiao Yue-De yang Yong-Zhen Huang State Key Laboratory of Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Material Science and Optoelectronic Engineering University of Chinese Academy of SciencesBeijing 100049China

Chaotic semiconductor lasers have been widely investigated for generating unpredictable random numbers,especially for lasers with external optical ***,chaotic lasers under external feedback are hindered by external feedback loop time,which causes correlation peaks for chaotic ***,we demonstrate the first self-chaotic microlaser based on internal mode interaction for a dual-mode microcavity laser,and realize random number generation using the self-chaotic laser *** adjusting mode frequency interval close to the intrinsic relaxation oscillation frequency,nonlinear dynamics including self-chaos and period-oscillations are predicted and realized numerically and experimentally due to internal mode *** internal mode interaction and corresponding carrier spatial oscillations pave the way of mode engineering for nonlinear dynamics in a solitary *** findings provide a novel and easy method to create controllable and robust optical chaos for high-speed random number generation.

关键词： mode random chaotic