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指间关节假体临床应用的研究进展
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作者 李璐希 吴祥奎 +1 位作者 王达利 孙广峰 《实用手外科杂志》 2022年第4期543-546,共4页
手部关节的完整性及稳定性是发挥正常功能的必备条件,手指近侧指间(PIP)关节是手指发挥功能的关键。对于PIP关节损伤或病变引起的关节僵硬、疼痛进行保守治疗效果不理想者,可严重影响手功能。随着显微外科技术的发展,跖趾关节游离移植... 手部关节的完整性及稳定性是发挥正常功能的必备条件,手指近侧指间(PIP)关节是手指发挥功能的关键。对于PIP关节损伤或病变引起的关节僵硬、疼痛进行保守治疗效果不理想者,可严重影响手功能。随着显微外科技术的发展,跖趾关节游离移植术可以再造PIP关节,最大限度地恢复PIP关节功能,切取后对下肢行走无明显影响,但对术者的显微技术要求较高,且有创伤大、不适合多个关节游离移植等弊端[1]。 展开更多
关键词 间关节 Swanson硅胶 体置换术
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指趾纤维骨性假瘤临床病理观察并文献复习
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作者 蔡宇翔 王志雨 《中国组织化学与细胞化学杂志》 CAS CSCD 2020年第6期543-547,共5页
目的探讨指趾纤维骨性假瘤(fibro-osseous pseudotumor of digits,FOPD)的临床病理学特征。方法收集武汉大学中南医院病理科2016年2月—2018年6月诊断的2例FOPD的临床、影像、病理资料,并复习相关文献。结果2例FOPD患者均为男性,平均年... 目的探讨指趾纤维骨性假瘤(fibro-osseous pseudotumor of digits,FOPD)的临床病理学特征。方法收集武汉大学中南医院病理科2016年2月—2018年6月诊断的2例FOPD的临床、影像、病理资料,并复习相关文献。结果2例FOPD患者均为男性,平均年龄31岁,1例位于食指,1例位于大鱼际,病变境界较清楚,由杂乱增生的纤维母细胞/肌纤维母细胞和成熟程度不等的骨样组织构成。梭形纤维母细胞形态温和,偶可见核分裂象,形态上类似结节性筋膜炎。骨样组织成熟程度不等,形态不规则,周围可见骨母细胞围绕,条索状随机分布于纤维组织内。免疫组织化学;梭形细胞vimentin(+)、calponin(+)、SMA(+),caldesmon(-)、desmin(-)、β-catenin(-)、S-100(-)、CD34(-)、CK(-)、EMA(-),Ki-67热点区约20%;骨母细胞SATB-2(强+)。分子生物学检测:1例检测出USP6基因断裂。结论FOPD是一种较少见的良性病变,其临床病理特征与骨化性肌炎十分相似,完整切除后预后良好,目前尚未见转移或恶变的报道。 展开更多
关键词 趾纤维骨性 骨化性肌炎 骨旁骨肉瘤 结节性筋膜炎
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一种抑制声表面波器件横向能量泄露结构及其应用
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作者 李世国 褚梦群 +9 位作者 胡丞稷 郑泽渔 杜雪松 董加和 陆川 李桦林 陈彦光 汪红兵 马晋毅 肖强 《压电与声光》 CAS 北大核心 2024年第5期680-684,共5页
采用42°YX-LiTaO_(3)基底的声表面波(SAW)滤波器、多工器易产生横向能量泄露效应,这种效应的产生会增大SAW器件的插损、缩减有效带宽、降低矩形度等。为了抑制声表面波的横向能量泄露,提出了一种假指加宽结构,并通过有限元仿真验... 采用42°YX-LiTaO_(3)基底的声表面波(SAW)滤波器、多工器易产生横向能量泄露效应,这种效应的产生会增大SAW器件的插损、缩减有效带宽、降低矩形度等。为了抑制声表面波的横向能量泄露,提出了一种假指加宽结构,并通过有限元仿真验证了该结构的有效性。将该结构应用于Band 40和Band 41 SAW滤波器设计中,实验结果表明,该结构在不增加任何工艺复杂度的情况下能有效抑制SAW器件的横向能量泄露,从而减小SAW器件的通带插损、增加有效带宽、提高矩形度等。该结构能够拓展应用于其他频段的SAW器件。 展开更多
关键词 声表面波器件 42°YX-LiTaO_(3) 横向能量泄露 假指加宽
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基于MSC双声路SAW器件的设计仿真平台 被引量:2
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作者 文常保 巨永锋 +1 位作者 康迤 闫栋 《微纳电子技术》 CAS 北大核心 2011年第1期15-20,共6页
利用模块化设计思想,在Matlab编程环境下实现了基于多条耦合器双声路声表面波器件的设计仿真平台。为了提高MSC双声路SAW器件的性能,该平台将多条耦合器、分裂指及假指设计方案融合到器件设计中。多条耦合器不仅实现了两个变迹换能器传... 利用模块化设计思想,在Matlab编程环境下实现了基于多条耦合器双声路声表面波器件的设计仿真平台。为了提高MSC双声路SAW器件的性能,该平台将多条耦合器、分裂指及假指设计方案融合到器件设计中。多条耦合器不仅实现了两个变迹换能器传递函数的乘积,而且消除了体声波对器件性能的影响。假指消除了通过变迹换能器引起的波前畸变。分裂指可以最小化换能器内部的声波反射问题。通过一个频率为203.559MHz的基于多条耦合器双声路声表面波器件的设计和实际测试结果的对比分析,证明了该设计仿真平台不仅可以进行器件版图结构的设计和模拟,而且设计平台所得到的版图和数据可以用于器件的掩膜版制作和器件封装尺寸参考。另外,该仿真设计平台可以很好地实现对器件的脉冲特性、频率响应特性的模拟和仿真。 展开更多
关键词 声表面波器件 多条耦合器 双声路 分裂 假指
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Happiness Index-oriented Tourism Area Management 被引量:1
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作者 余子萍 《Journal of Landscape Research》 2010年第3期55-57,共3页
The establishment of happiness index evaluation system for tourism resorts is an effective approach to enhance the scientific development of resorts and the well-being of people. Through analyzing happiness indexes of... The establishment of happiness index evaluation system for tourism resorts is an effective approach to enhance the scientific development of resorts and the well-being of people. Through analyzing happiness indexes of population in tourism resorts, this study aims to provide references for the scientific development of resorts. 展开更多
关键词 RESORTS Happiness index Evaluation system HUMAN-CENTERED
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Pseudoaneurysm of gastroduodenal artery following radical gastrectomy for gastric carcinoma patients 被引量:4
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作者 Dong YiKim Jae KyoonJoo +3 位作者 SeongYeobRyu Young JinKim Shin KonKim Yong-Yeon Jung 《World Journal of Gastroenterology》 SCIE CAS CSCD 2003年第12期2878-2879,共2页
We report a rare case of postoperative pseudoaneurysm of the gastroduodenal artery following radical gastrectomy.Surgical trauma to the gastroduodenal artery during regional lymphadenectomy was considered as the cause... We report a rare case of postoperative pseudoaneurysm of the gastroduodenal artery following radical gastrectomy.Surgical trauma to the gastroduodenal artery during regional lymphadenectomy was considered as the cause of the postoperative pseudoaneurysm. The pseudoaneurysm was successfully managed by ligating the bleeding vessel. We should consider the possibility of pseudoaneurysm formation in a patient with gastrointestinal bleeding in the postoperative period following radical gastrectomy with regional lymph node and perivascular lymphatic dissection. 展开更多
关键词 Aged Aneurysm False DUODENUM Fatal Outcome GASTRECTOMY Humans Male Mesenteric Artery Superior STOMACH Stomach Neoplasms Time Factors
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An endoluminal aortic prosthesis infection presenting as pneumoaorta and aortoduodenal fistula
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作者 Yung-Ta Kao Chun-Ming Shih +3 位作者 Feng-Yen Lin Nai-Wen Tsao Nen-Chung Chang Chung-Yao Huang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第37期5309-5311,共3页
Herein, we present a case of pneumoaorta and aorto-duodenal fistula (ADF) caused by an endoluminal aortic prosthesis infection. An 82-year-old man underwent endovascular aneurysm repair with a stent graft to exclude a... Herein, we present a case of pneumoaorta and aorto-duodenal fistula (ADF) caused by an endoluminal aortic prosthesis infection. An 82-year-old man underwent endovascular aneurysm repair with a stent graft to exclude a 5.1-cm abdominal aortic aneurysm. Three months after the index procedure, the patient was taken to the emergency department at a medical university hospital. He presented with a 2-d history of bloody diarrhea. An endoluminal aortic stent graft infection was diagnosed, and an ADF was identified. The patient died of septic shock despite emergency surgery and intensive care. When encountered, stent graft infections require appropriate antibiotics and graft explantation.The diagnosis of an ADF is important, and surgery remains the most effective management if septic shock presents despite conservative treatment. 展开更多
关键词 Aortoduodenal fistula Endovascular aneu-rysm repair INFECTION Stent graft Shock
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Duodenal pseudolymphoma: A case report and review of literature
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作者 Yong-Heng Huang, Tian-Zhu Long, Zhi-Yu Xiao, Hua Ye, Yun-Le Wan, Jie Wang Yong-Heng Huang, Tian-Zhu Long, Zhi-Yu Xiao, Hua Ye, Yun-Le Wan, Jie Wang, Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University Haizhu District, Guangzhou 510260, Guangdong Province, China 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第27期3267-3270,共4页
We report a rare case of duodenal pseudolymphoma without any symptoms. The lesion located in front of the head of the pancreas was found accidentally during a medical examination. The findings of computed tomography a... We report a rare case of duodenal pseudolymphoma without any symptoms. The lesion located in front of the head of the pancreas was found accidentally during a medical examination. The findings of computed tomography and positron emission tomography-computed tomography suggested a stromal tumor or malignant lymphoma. Surgical resection was performed. The lesions were patho- logically diagnosed as duodenal pseudolymphoma. 展开更多
关键词 PSEUDOLYMPHOMA DUODENUM
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回音壁
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《健康》 1995年第9期42-43,共2页
郑州李兵问:我今年34岁,一年多以前患了附睾炎,经治疗后阴囊内仍有硬块存在。我有意做附睾切除手术,但不知是否适宜?术后会影响性功能吗? 答:慢性附睾炎多为急性炎症的继续,临床症状不一,或仅有微痛及胀痛,附睾尾部轻度肿大及硬结。慢... 郑州李兵问:我今年34岁,一年多以前患了附睾炎,经治疗后阴囊内仍有硬块存在。我有意做附睾切除手术,但不知是否适宜?术后会影响性功能吗? 答:慢性附睾炎多为急性炎症的继续,临床症状不一,或仅有微痛及胀痛,附睾尾部轻度肿大及硬结。慢性附睾炎常有急性发作。因此,反复发作之附睾炎病例,可考虑行附睾切除术。另外。 展开更多
关键词 回音壁 肢矫形 假指 下肢浅静脉曲张 肝囊肿 息肉 末梢神经炎 阴茎勃起 附辜 热熏
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RELIABILITY INDICES OF DISCRETE-TIME Geo^X/G/1 QUEUEING SYSTEM WITH UNRELIABLE SERVICE STATION AND MULTIPLE ADAPTIVE DELAYED VACATIONS 被引量:8
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作者 Yinghui TANG Miaomiao YU +1 位作者 Xi YUN Shujuan HUANG 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2012年第6期1122-1135,共14页
This paper considers the discrete-time GeoX/G/1 queueing model with unreliable service station and multiple adaptive delayed vacations from the perspective of reliability research. Following problems will be discussed... This paper considers the discrete-time GeoX/G/1 queueing model with unreliable service station and multiple adaptive delayed vacations from the perspective of reliability research. Following problems will be discussed: 1) The probability that the server is in a "generalized busy period" at time n; 2) The probability that the service station is in failure at time n, i.e., the transient unavailability of the service station, and the steady state unavailability of the service station; 3) The expected number of service station failures during the time interval (0, hi, and the steady state failure frequency of the service station; 4) The expected number of service station breakdowns in a server's "generalized busy period". Finally, the authors demonstrate that some common discrete-time queueing models with unreliable service station are special cases of the model discussed in this paper. 展开更多
关键词 Delayed vacation policy discrete-time queueing model failure frequency reliability index total probability decomposition unavailability unreliable.
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