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Sequential testis sparing surgery of simultaneous bilateral testicular tumors with different cell types in a Chinese infant:an uncommon presentation
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作者 Xiao-Xi Li Fang Chen +5 位作者 Shou-Lin Li Yi-Chen Huang Yi-Qing Lv Yan Chen Hui-Zhen Sun Hua Xie 《亚洲男性学杂志:英文版》 SCIE CAS CSCD 2019年第4期419-420,共2页
Dear Editor, Patients of bilateral pediatric testicular tumors and bilateral testicular teratoma or yolk sac tumor (YST) were rarely reported, and there was still no standard therapy. However, synchronous bilateral te... Dear Editor, Patients of bilateral pediatric testicular tumors and bilateral testicular teratoma or yolk sac tumor (YST) were rarely reported, and there was still no standard therapy. However, synchronous bilateral testicular tumors with different histology were a quite rare situation. We reported the first case of successful radical orchiectomy in the left scrotum and testicular sparing surgery in the right testis sequentially. No atrophy or residual tumor in the right testis and no recurrence in the left scrotum were found after 7 years of follow-up. Ethical approval was obtained from the Institutional Review Board of Childrens Hospital of Shanghai, which was affiliated to the Shanghai Jiao Tong University, School of Medicine, Shanghai, China. Informed consent was obtained from his parents. 展开更多
关键词 SIMULTANEOUS BILATERAL testicular tumors DIFFERENT cell types CHINESE INFANT
Simultaneous 45.2 Gbit/s 4-PAM data and 8 GHz reference frequency clock signal transmission over DWDM VCSEL channels for optical interconnects
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作者 G.M.Isoe A.W.R.Leitch T.B.Gibbon 《光电子快报:英文版》 EI 2019年第1期48-51,共4页
In this paper, we propose and experimentally demonstrate a vertical cavity surface emitting laser(VCSEL)-based simultaneous 45.2 Gbit/s(2×22.6 Gbit/s) 4-PAM data and 8 GHz(2×4 GHz) phase modulated reference ... In this paper, we propose and experimentally demonstrate a vertical cavity surface emitting laser(VCSEL)-based simultaneous 45.2 Gbit/s(2×22.6 Gbit/s) 4-PAM data and 8 GHz(2×4 GHz) phase modulated reference frequency(RF) clock signal transmission dense wavelength division multiplexing(DWDM) system for optical interconnects. Two low-cost power-efficient 10 G VCSEL channels with central wavelengths at 1 550.71 nm and 1 551.11 nm are separately modulated with 22.6 Gbit/s 4-PAM data, therefore doubling the channel bit rate. Carrier spectral efficiency per channel is further maximized by exploiting the phase attribute in transmission of a 4 Hz RF clock signal. To further maximize the network capacity, the two VCSEL channels are densely multiplexed at 0.4 nm spacing. We therefore experimentally achieve the network data rate of 45.2 Gbit/s with 8 GHz phase modulated RF clock signal. The results show that receiver sensitivities of-11.02 dBm and-9.98 dBm are experimentally achieved for VCSEL channels of 1 550.71 nm and 1 551.11 nm respectively without the phase modulated RF clock signal. However, the introduction of a phase modulated clock signal contributes to a maximum interference penalty of 0.57 dBm and 0.41 dBm for the considered channels respectively. Simultaneous distribution of transmission data and reference clock signal over shared network structure maximizes the carrier spectral efficiency and network capacity with low cost. 展开更多
关键词 VCSEL SIMULTANEOUS REFERENCE
输尿管软镜同期处理肾结石合并肾囊肿的临床分析
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作者 石鑫 李炯明 +8 位作者 刘建和 方克伟 柯昌兴 姜永明 王光 陈韬 李沛 杨博伟 王辉涛 《临床外科杂志》 2019年第4期338-341,共4页
目的分析经尿道输尿管软镜下钬激光碎石联合肾囊肿内切开引流术同期处理肾囊肿合并肾结石的临床疗效。方法回顾性分析我院2015年11月至2017年3月期间收治的12例行输尿管软镜同期处理肾结石并肾囊肿病人的临床资料。记录手术时间、出血... 目的分析经尿道输尿管软镜下钬激光碎石联合肾囊肿内切开引流术同期处理肾囊肿合并肾结石的临床疗效。方法回顾性分析我院2015年11月至2017年3月期间收治的12例行输尿管软镜同期处理肾结石并肾囊肿病人的临床资料。记录手术时间、出血量、住院时间等数据,观察对病人治疗效果、并发症及术后随访结果。结果 12例病人手术均顺利完成,无中转开放手术。手术时间69~205 min,平均(103.6±41.7)min。出血量极少。未出现严重手术并发症。住院时间8~18 d,平均(12.3±2.9)d;术后住院时间4~14 d,平均(7.4±3.3)d。术后随访1~12个月,12例术后复查CT或者B超提示肾结石完全碎除、肾囊肿消失或直径明显缩小。结论经尿道输尿管软镜下钬激光碎石联合肾囊肿内切开引流术是一种安全有效的手术方式,具有微创、安全、有效的特点,值得临床推广应用。 展开更多
关键词 输尿管软镜 肾囊肿 肾结石 同期
离轴三反同时偏振成像仪光机设计 预览
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作者 凌明椿 宋茂新 +2 位作者 洪津 孙晓兵 陶菲 《红外与激光工程》 EI CSCD 北大核心 2019年第5期231-240,共10页
基于离轴三反的前置望远系统,结合分振幅同时偏振成像技术,设计了一种运用于卫星平台环境的高空间分辨率的同时偏振成像仪,能同时获取目标的斯托克斯偏振参数,为抑制海面耀光、海雾、大气辐射等干扰,提升探测目标对比度提供了一种有效手... 基于离轴三反的前置望远系统,结合分振幅同时偏振成像技术,设计了一种运用于卫星平台环境的高空间分辨率的同时偏振成像仪,能同时获取目标的斯托克斯偏振参数,为抑制海面耀光、海雾、大气辐射等干扰,提升探测目标对比度提供了一种有效手段,在进行动态目标探测方面具有明显优势。并以光学设计为输入进行详细结构设计。最后通过实验室整机性能测试,仪器的工作谱段500~700 nm,视场角8.5°×0.1°,空间分辨率为5 m@500 km,光学MTF>0.4@71.4 lp/mm,在高度角30°、反射率0.2的条件下,信噪比优于38 d B,偏振测量精度优于1%(P≤0.3),整机一阶模态195 Hz,结构能够承受发射时严苛的力学环境,具备良好的强度和刚度。整机性能满足实际使用需求。 展开更多
关键词 离轴三反 偏振 光机设计 同时
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Simultaneous acceleration of two kinds of ion beams in the RISP 预览
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作者 Siwon Jang Eun-San Kim 《核技术:英文版》 SCIE CAS CSCD 2019年第6期70-77,共8页
The Rare Isotope Science Project (RISP) is a research complex consisting of a heavy-ion accelerator, which contains a front-end system, a super-conducting linear accelerator, an isotope separator online (ISOL) system,... The Rare Isotope Science Project (RISP) is a research complex consisting of a heavy-ion accelerator, which contains a front-end system, a super-conducting linear accelerator, an isotope separator online (ISOL) system, and an in-flight system. The original purpose of the post-linear-accelerator (post-linac) section was to accelerate either a stable driver beam derived from an electron cyclotron resonance ion source, or an unstable rare-isotope beam from an ISOL system. The post-linac lattice has now been redesigned using a novel and improved acceleration concept that allows the simultaneous acceleration of both a stable driver beam and a radioisotope beam. To achieve this, the post-linac lattice is set for a mass-to-charge ratio (A/q) that is the average of the two beams. The performance of this simultaneous two-beam acceleration is here assessed using two ion beams: 58Ni^8+ and 132Sn^20+. A beam dynamics simulation was performed using the TRACK and TraceWin codes. The resultant beam dynamics for the new RISP post-linac lattice design are examined. We also estimate the effects of machine errors and their correction on the post-linac lattice. 展开更多
关键词 Linear ACCELERATOR SIMULTANEOUS two-beam ACCELERATION HEAVY-ION ACCELERATOR BEAM dynamics
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Imaging plaque inflammation in asymptomatic cocaine addicted individuals with simultaneous positron emission tomography/magnetic resonance imaging 预览
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作者 Keren Bachi Venkatesh Mani +4 位作者 Audrey E Kaufman Nadia Alie Rita Z Goldstein Zahi A Fayad Nelly Alia-Klein 《世界放射学杂志:英文版(电子版)》 2019年第5期62-73,共12页
BACKGROUND Chronic cocaine use is associated with stroke, coronary artery disease and myocardial infarction, resulting in severe impairments or sudden mortality. In the absence of clear cardiovascular symptoms, indivi... BACKGROUND Chronic cocaine use is associated with stroke, coronary artery disease and myocardial infarction, resulting in severe impairments or sudden mortality. In the absence of clear cardiovascular symptoms, individuals with cocaine use disorder (iCUD) seeking addiction treatment receive mostly psychotherapy and psychiatric pharmacotherapy, with no attention to vascular disease (i.e., atherosclerosis). Little is known about the pre-clinical signs of cardiovascular risk in iCUD and early signs of vascular disease are undetected in this underserved population. AIM To assess inflammation, plaque burden and plaque composition in iCUD aiming to detect markers of atherosclerosis and vascular disease. METHODS The bilateral carotid arteries were imaged with positron emission tomography/magnetic resonance imaging (PET/MRI) in iCUD asymptomatic for cardiovascular disease, healthy controls, and individuals with cardiovascular risk. PET with 18F-fluorodeoxyglucose (18F-FDG) evaluated vascular inflammation and 3-D dark-blood MRI assessed plaque burden including wall area and thickness. Drug use and severity of addiction were assessed with standardized instruments. RESULTS The majority of iCUD and controls had carotid FDG-PET signal greater than 1.6 but lower than 3, indicating the presence of mild to moderate inflammation. However, the MRI measure of wall structure was thicker in iCUD as compared to the controls and cardiovascular risk group, indicating greater carotid plaque burden. iCUD had larger wall area as compared to the healthy controls but not as compared to the cardiovascular risk group, indicating structural wall similarities between the non-control study groups. In iCUD, wall area correlated with greater cocaine withdrawal and craving. CONCLUSION These preliminary results show markers of carotid artery disease burden in cardiovascular disease-asymptomatic iCUD. Broader trials are warranted to develop protocols for early detection of cardiovascular risk and preventive intervention in iCUD. 展开更多
关键词 3-D dark-blood magnetic resonance imaging 18F-fluorodeoxyglucose POSITRON emission TOMOGRAPHY SIMULTANEOUS POSITRON emission TOMOGRAPHY Magnetic resonance Substance use disorder COCAINE addiction Atherosclerosis PLAQUE burden Vascular INFLAMMATION
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Comparison of efficacy and safety between late-course and simultaneous integrated dose-increasing intensity-modulated radiation therapy for cervical cancer complicated with pelvic lymph node metastasis 预览
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作者 Yi Cheng Nan Huang +3 位作者 Jing Zhao Jianhua Wang Chen Gong Kai Qin 《肿瘤学与转化医学:英文版》 2019年第1期25-29,共5页
Objective This study aimed to compare and analyze the clinical efficacy and safety of late-course and simultaneous integrated dose-increasing intensity-modulated radiation therapy(IMRT) for cervical cancer complicated... Objective This study aimed to compare and analyze the clinical efficacy and safety of late-course and simultaneous integrated dose-increasing intensity-modulated radiation therapy(IMRT) for cervical cancer complicated with pelvic lymph node metastasis. Methods Sixty patients with cervical cancer complicated with pelvic lymph node metastasis who were admitted to our hospital from January 2013 to January 2015 were enrolled. The patients were randomly divided into the late-course dose-increasing IMRT group and the simultaneous integrated dose-increasing IMRT group, with 30 cases included in each group, respectively. All patients were concurrently treated with cisplatin. After treatment, the clinical outcomes of the two groups were compared. Results The remission rate of symptoms in the simultaneous integrated dose-increasing IMRT group was significantly higher than that in the late-course dose-increasing IMRT group(P < 0.05). The follow-up results showed that the overall survival time, progression-free survival time, and distant metastasis time of patients in the simultaneous integrated dose-increasing IMRT group were significantly longer than those in the late-course dose-increasing IMRT group(P < 0.05). The recurrent rate of lymph nodes in the radiation field in the simultaneous integrated dose-increasing IMRT group was significantly lower(P < 0.05) than in the late-course dose-increasing IMRT group. There was no significant difference in the incidence of cervical and vaginal recurrence and distant metastasis between the two groups(P > 0.05). The radiation doses of Dmax in the small intestine, D1 cc(the minimum dose to the 1 cc receiving the highest dose) in the bladder, and Dmax in the rectum in the simultaneous integrated dose-increasing IMRT group were significantly lower(P < 0.05) than in the late-course dose-increasing IMRT group. There was no significant difference in intestinal D2 cc(the minimum dose to the 2 cc receiving the highest dose) between the two groups(P > 0.05). The incidence of bone marrow suppr 展开更多
关键词 simultaneous integrated dose-increasing INTENSITY-MODULATED radiation therapy late-course dose-increasing INTENSITY-MODULATED radiation therapy cervical cancer COMPLICATED with pelvic lymph node metastasis clinical efficacy safety
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Semi-Direct Visual Odometry and Mapping System with RGB-D Camera 预览
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作者 Xinliang Zhong Xiao Luo +1 位作者 Jiaheng Zhao Yutong Huang 《北京理工大学学报:英文版》 EI CAS 2019年第1期83-93,共11页
In this paper a semi-direct visual odometry and mapping system is proposed with a RGB-D camera,which combines the merits of both feature based and direct based methods.The presented system directly estimates the camer... In this paper a semi-direct visual odometry and mapping system is proposed with a RGB-D camera,which combines the merits of both feature based and direct based methods.The presented system directly estimates the camera motion of two consecutive RGB-D frames by minimizing the photometric error.To permit outliers and noise,a robust sensor model built upon the Z-distribution and an error function mixing depth and photometric errors are used to enhance the accuracy and robustness.Local graph optimization based on key frames is used to reduce the accumulative error and refine the local map.The loop closure detection method,which combines the appearance similarity method and spatial location constraints method,increases the speed of detection.Experimental results demonstrate that the proposed approach achieves higher accuracy on the motion estimation and environment reconstruction compared to the other state-of-the-art methods.Moreover,the proposed approach works in real-time on a laptop without a GPU,which makes it attractive for robots equipped with limited computational resources. 展开更多
关键词 RGB-D simultaneous LOCALIZATION and mapping(SLAM) visual ODOMETRY LOCALIZATION 3D MAPPING loop CLOSURE detection
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Transparently curved metamaterial with broadband millimeter wave absorption
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作者 Cheng Zhang Jin Yang +5 位作者 Wenkang Cao Wei Yuan Junchen Ke Liuxi Yang Qiang Cheng Tiejun Cui 《光子学研究:英文版》 CSCD 2019年第4期478-485,共8页
We present a conformal metamaterial with simultaneous optical transparency and broadband millimeter-wave absorption for a curved surface. By tailoring the reflection response of meta-atoms at oblique angles, it is pos... We present a conformal metamaterial with simultaneous optical transparency and broadband millimeter-wave absorption for a curved surface. By tailoring the reflection response of meta-atoms at oblique angles, it is possible to achieve excellent absorption performance from 26.5 to 40.0 GHz within a wide angular range from 0° to 60°for transverse-electric and transverse-magnetic waves. In the meantime, by employing transparent substrates,including polyvinyl chloride and polyethylene terephthalate, good optical transmittance(80.1%) and flexibility are obtained simultaneously. The reflectivity of a curved metallic surface coated with the proposed curved metamaterial is simulated and measured experimentally. Both results demonstrate excellent absorption performance of the metamaterial, which is highly favored for practical applications. 展开更多
关键词 We PRESENT a CONFORMAL SIMULTANEOUS optical FAVORED for practical
Stabilized seventh-order dissipative compact scheme using simultaneous approximation terms 预览
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作者 Jiaxian QIN Yaming CHEN Xiaogang DENG 《应用数学和力学:英文版》 SCIE EI CSCD 2019年第6期823-836,共14页
To ensure time stability of a seventh-order dissipative compact finite difference scheme, fourth-order boundary closures are used near domain boundaries previously. However, this would reduce the global convergence ra... To ensure time stability of a seventh-order dissipative compact finite difference scheme, fourth-order boundary closures are used near domain boundaries previously. However, this would reduce the global convergence rate to fifth-order only. In this paper, we elevate the boundary closures to sixth-order to achieve seventh-order global accuracy. To keep the improved scheme time stable, the simultaneous approximation terms (SATs) are used to impose boundary conditions weakly. Eigenvalue analysis shows that the improved scheme is time stable. Numerical experiments for linear advection equations and one-dimensional Euler equations are implemented to validate the new scheme. 展开更多
关键词 HIGH-ORDER SCHEME compact SCHEME time stability SIMULTANEOUS APPROXIMATION TERM (SAT)
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Anchor Self-Localization Algorithm Based on UWB Ranging and Inertial Measurements
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作者 Qin Shi Sihao Zhao +2 位作者 Xiaowei Cui Mingquan Lu Mengdi Jia 《清华大学学报自然科学版(英文版)》 EI CAS CSCD 2019年第6期728-737,共10页
Localization systems utilizing Ultra-WideBand(UWB) have been widely used in dense urban and indoor environments. A moving UWB tag can be located by ranging to fixed UWB anchors whose positions are surveyed in advance.... Localization systems utilizing Ultra-WideBand(UWB) have been widely used in dense urban and indoor environments. A moving UWB tag can be located by ranging to fixed UWB anchors whose positions are surveyed in advance. However, manually surveying the anchors is typically a dull and time-consuming process and prone to artificial errors. In this paper, we present an accurate and easy-to-use method for UWB anchor self-localization,using the UWB ranging measurements and readings from a low-cost Inertial Measurement Unit(IMU). The locations of the anchors are automatically estimated by freely moving the tag in the environment. The method is inspired by the Simultaneous Localization And Mapping(SLAM) technique used by the robotics community. A tightly-coupled Error-State Kalman Filter(ESKF) is utilized to fuse UWB and inertial measurements, producing UWB anchor position estimates and six Degrees of Freedom(6 DoF) tag pose estimates. Simulated experiments demonstrate that our proposed method enables accurate self-localization for UWB anchors and smooth tracking of the tag. 展开更多
关键词 ANCHOR SELF-LOCALIZATION error-state KALMAN filter sensor fusion SIMULTANEOUS LOCALIZATION and mapping
Mn-Ce-Nb-O_x/P84 catalytic filters prepared by a novel method for simultaneous removal of particulates and NO
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作者 Bo Yang Qiong Huang +2 位作者 Mindong Chen Yuesong Shen Shemin Zhu 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2019年第3期273-281,共9页
The Mn-Ce-Nb-Ox/P84 catalytic filter for removal of particulates and NO simultaneous was prepared by a novel method(foam coating method). The process parameters including the concentrations of PTFE emulsion, particle ... The Mn-Ce-Nb-Ox/P84 catalytic filter for removal of particulates and NO simultaneous was prepared by a novel method(foam coating method). The process parameters including the concentrations of PTFE emulsion, particle size of catalyst and calcination temperature for preparation of catalytic filters were analyzed. In addition, the physical properties and performance for removal of NO(NH3-SCR) and particulates of Mn-Ce-Nb-Ox/P84 catalytic filter prepared under the optimized parameters, were also systematic studied. Results show that the process parameters had significant influences on stability and performance of catalytic filter, The Mn-Ce-Nb-Ox/P84 catalytic filter prepared by foam coating method under the optimized parameters, has satisfactory physical properties and catalytic performance for removal of NO and particulates at 140-220 ℃. The NO removal efficiency of catalytic filter can reach95.3% at 200 ℃ as the catalyst loading amount is 450 g/m2, Moreover,the dust removal efficiency of MnGe-Nb-Ox/P84 catalytic filter reaches as high as 99.98%, and the PM2.5 removal efficiency also reaches99.98%. The anti-sulfur performance of Mn-Ce-Nb-Ox catalytic filter is also attractive, after injecting150 ppm SO2, the NO removal efficiency still retains up to 85%. It is indicated that the foam coating method can not only make a bond of high strength between catalyst and filter, but also make the catalytic filter possessing an excellent and stable performance for removal of NO and particulates. 展开更多
关键词 Foam coating METHOD Simultaneous removal Mn-Ce-Nb-O_x/P84 catalytic filters NO PARTICULATES Preparation METHOD
Obstacle-avoiding path planning for multiple autonomousunderwater vehicles with simultaneous arrival
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作者 YAO Peng QI ShengBo 《中国科学:技术科学英文版》 SCIE EI CAS CSCD 2019年第1期121-132,共12页
This paper focuses on planning the obstacle-avoiding paths of multiple autonomous underwater vehicles(AUVs) in complex ocean environment, with the time coordination of simultaneous arrival. By imitating the nature phe... This paper focuses on planning the obstacle-avoiding paths of multiple autonomous underwater vehicles(AUVs) in complex ocean environment, with the time coordination of simultaneous arrival. By imitating the nature phenomenon that river water avoids rocks and reaches the destination, the interfered fluid dynamical system(IFDS) is first presented to obtain the single-AUV path for obstacle avoidance, where the modulation matrix is calculated to quantify the influence of obstacles especially. Then the two-layer comprehensive adjustment to path length and voyage speed is utilized, aiming to achieve the simultaneous arrival at destination between multi-AUVs. By adjusting reactive parameters of IFDS, the former is to roughly ensure the intersection of AUVs’ potential arrival time range to be non-null. On this basis, the latter adjusts each AUV’s voyage speed finely using the consensus method with state predictor, which has faster convergence speed. If the multi-AUVs communication network is connected, the whole system will quickly converge to the consensus state, i.e., the estimated time of arrival(ETA) of each AUV tends to be equal. Finally, the simulation results verify the advantages of our proposed method. 展开更多
关键词 AUTONOMOUS underwater vehicles (AUVs) obstacle-avoiding PATHS SIMULTANEOUS ARRIVAL interfered fluid dynamical system (IFDS) consensus method with state predictor
同期双侧超微经皮肾镜取石术治疗小儿上尿路结石10例报告 预览
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作者 加素尔·巴吐尔 徐海 +5 位作者 阿力木江·阿布来孜 艾尼瓦尔·艾尔肯 伊尔范·压力坤 阿衣丁·西热牙孜旦 艾尔肯·吐尔逊 王玉杰 《现代泌尿外科杂志》 CAS 2019年第2期128-131,144共5页
目的探讨同期双侧超微经皮肾镜取石术(SBSMP)在学龄前儿童和婴幼儿双肾结石治疗中的安全性及疗效。方法回顾性分析喀什地区第一人民医院从2015年10月至2017年1月应用SBSMP治疗10例小儿双侧上尿路结石的临床资料。结果9例均同期成功完成... 目的探讨同期双侧超微经皮肾镜取石术(SBSMP)在学龄前儿童和婴幼儿双肾结石治疗中的安全性及疗效。方法回顾性分析喀什地区第一人民医院从2015年10月至2017年1月应用SBSMP治疗10例小儿双侧上尿路结石的临床资料。结果9例均同期成功完成双侧手术,1例第2术侧因穿刺困难终止手术。总手术时间平均(41.4±13.78)min。术后均无发热,术中术后均未输血,1例(一侧完全无管化另一侧部分无管化)患儿术后部分无管化侧的输尿管外支架管脱落,出现无尿,给予利尿、拆切口缝合线引流等处理后自行好转,余患儿均无严重并发症发生。术后1周内复查取净双侧结石7例,清石率70%(7/10);3例发现残余结石,3个月后复查2例自行排出,总清石率90%(9/10),一侧肾结石复发1例。结论合理选择病例,足够经验的泌尿外科医生应用SBSMP治疗学龄前儿童和婴幼儿双侧上尿路结石安全可行。 展开更多
关键词 超微经皮肾镜取石术 双肾结石 上尿路结石 小儿 同期
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Ipsilateral proximal and distal radius fractures with unstable elbow joint: Which should we address first?
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作者 Nur Azuatul Akma Kamaludin Nur Azree Ferdaus Kamudin +1 位作者 Shalimar Abdullah Jamari Sapuan 《中华创伤杂志:英文版》 CAS CSCD 2019年第1期59-62,共4页
Simultaneous ipsilateral fractures involving radial head and distal end of radius are uncommon. We present our thoughts on which fracture should be addressed first. A 68-year-old lady sustained an ipsilateral fracture... Simultaneous ipsilateral fractures involving radial head and distal end of radius are uncommon. We present our thoughts on which fracture should be addressed first. A 68-year-old lady sustained an ipsilateral fracture of the right radial head and distal end of radius following a fall. Clinically her right elbow was posteriorly dislocated and right wrist was deformed. Plain radiographs showed an intraarticular fracture of the distal end of radius and a comminution radial head fracture with a proximally migrated radius. Magnetic resonance imaging (MRI) showed no significant ligament injuries. We addressed her distal radius first with an an atomical lock ing plate followed by her radial head with a radial head replacement. Our rationale to treat the distal end radius: first was to obtain a correct alignment of Lister's tubercle and correct the distal radius height. Lister's tubercle was used to guide for the correct rotation of the radial head prosthesis. Correcting the distal end fracture radial height helped us with length selection of the radial head prosthesis and address the proximally migrated radial shaft and neck. Postoperative radiographs showed an acceptable reduction. The Cooney score was 75 at 3 months postoperatively, which was equivalent to a fair functional outcome. 展开更多
关键词 Simultaneous IPSILATERAL FRACTURES Radius FRACTURES IRREDUCIBLE elbow dislocation RADIAL HEAD RADIAL HEAD arthroplasty
Simultaneous Localization and Mapping Technology Based on Project Tango
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作者 XU Pei SU Kehua +1 位作者 HONG Cheng ZHANG Dengyi 《武汉大学学报:自然科学英文版》 CAS CSCD 2019年第2期176-184,共9页
Aiming at the problem of system error and noise in simultaneous localization and mapping(SLAM) technology, we propose a calibration model based on Project Tango device and a loop closure detection algorithm based on v... Aiming at the problem of system error and noise in simultaneous localization and mapping(SLAM) technology, we propose a calibration model based on Project Tango device and a loop closure detection algorithm based on visual vocabulary with memory management. The graph optimization is also combined to achieve a running application. First, the color image and depth information of the environment are collected to establish the calibration model of system error and noise. Second, with constraint condition provided by loop closure detection algorithm, speed up robust feature is calculated and matched. Finally, the motion pose model is solved, and the optimal scene model is determined by graph optimization method. This method is compared with Open Constructor for reconstruction on several experimental scenarios. The results show the number of model’s points and faces are larger than Open Constructor’s, and the scanning time is less than Open Constructor’s. The experimental results show the feasibility and efficiency of the proposed algorithm. 展开更多
关键词 SIMULTANEOUS LOCALIZATION and mapping PROJECT TANGO LOOP CLOSURE detection visual vocabulary graph optimization
油田集输管道ECDA检测工艺技术的优化研究 预览
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作者 陈剑 《全面腐蚀控制》 2018年第11期71-74,共4页
在役埋地钢质管道外腐蚀检测评价技术(ECDA)是实现油田集输管道防腐蚀管理的重要检测技术。通过技术创新和工程实践研发出了油气管道ECDA检测工艺优化技术,主要通过双侧多点接地检测通路、检测信号接入、多机组合多管同步检测、组合检... 在役埋地钢质管道外腐蚀检测评价技术(ECDA)是实现油田集输管道防腐蚀管理的重要检测技术。通过技术创新和工程实践研发出了油气管道ECDA检测工艺优化技术,主要通过双侧多点接地检测通路、检测信号接入、多机组合多管同步检测、组合检漏、组合定位、检测信号强度探测和整体组合评价等工艺实现了高灵敏度、高效率的油气管道ECDA检测施工。该技术在工程应用中技术优势明显,提高了检测质量和工效,降低了检测作业强度,工程推广应用前景广阔。 展开更多
关键词 管道 ECDA 检测工艺 检测通路 组合 同步
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Process synthesis with simultaneous consideration of inherent safety-inherent risk footprint
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作者 Andreja Nemet Jiri J.Kleme Zdravko Kravanja 《化学科学与工程前沿:英文版》 EI CAS CSCD 2018年第4期745-762,共18页
Process plants should be designed to be economically viable and environmentally friendly,while also being operable and maintainable during process implementation.The safety of processes is among the most important con... Process plants should be designed to be economically viable and environmentally friendly,while also being operable and maintainable during process implementation.The safety of processes is among the most important considerations in obtaining results that are more acceptably realistic,as it is linked to the availability and reliability of the process.Inherent safety can effectively be enhanced in the early stages of the design, when the main decisions on process design are made.The aim of this study is to enhance and select the appropriate risk assessment method and to incorporate it into process synthesis,using a mathematical programming approach.A mixed-integer,nonlinear programming (MINLP)model was used for the synthesis of a methanol production process,considering risk assessment during the synthesis. Risk assessment is performed simultaneously with the MINLP process synthesis,where the risk is determined either for the whole process as overall risk,or on a per unit of-a-product basis.For the latter,a new measurement is proposed:the inherent risk footprint.The results of a ease study led to two main conclusions:(i)Significantly safer designs can be obtained at negligible economic expense, and (ii)at higher production capacities,a lower inherent risk footprint can be achieved.The results also indicate that designs obtained using this method can have significantly increased inherent safety,while remaining economically viable. 展开更多
关键词 inherent safety PROCESS design SIMULTANEOUS RISK assessment RISK FOOTPRINT METHANOL PROCESS
Arterial stimulation with simultaneous venous sampling for localizing insulinomas
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作者 Zhiyuan Wu Tingwei Su +6 位作者 Daming Wu Xiaoyi Ding Zhongmin Wang Wei Huang Ziyin Wang Qin Liu Hua Zhang 《介入医学杂志》 2018年第1期28-31,共4页
Purpose: The present study aimed to assess the accuracies of arterial stimulation with simultaneous venous sampling(ASVS) in preoperative localization of insulinomas. Materials and Methods: A cohort consisting of 6 ma... Purpose: The present study aimed to assess the accuracies of arterial stimulation with simultaneous venous sampling(ASVS) in preoperative localization of insulinomas. Materials and Methods: A cohort consisting of 6 males and 14 females(median age, 48.5y;range, 28–62y) with pathologically proven insulinomas were included in this study. Selective angiographies were performed with the superior mesenteric artery(SMA), gastroduodenal artery(GDA), proximal splenic artery, and midsplenic artery in all individuals. Then ASVS procedures were followed after angiographies for these arteries. Clinical characteristics of the patient and the tumor number, location, and size were recorded. The accuracy of preoperative localization of insulinomas was tested. Results: A total of 22 tumors were identified by histopathological diagnosis. The mean size of the tumor was 1.40±0.60 cm. Five tumors were in the head/neck region and 17 in the body/tail region. ASVS accurately localized 17/20(85%) cases with only biochemical data and 19/20(95%) cases with biochemical data and angiography images. Variant pancreatic arterial anatomy was revealed in 2 false cases with inferior pancreatic artery replaced by the superior mesenteric artery. Conclusion: ASVS was highly accurate in localizing insulinomas and should be performed in most of the patients with suspected insulinomas before the operation. 展开更多
关键词 INSULINOMAS ARTERIAL STIMULATION with SIMULTANEOUS VENOUS sampling localization diagnosis
Simultaneous curative resection of double colorectal carcinoma with synchronous bilobar liver metastases 预览
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作者 Emilio De Raffele Mariateresa Mirarchi +5 位作者 Dajana Cuicchi Ferdinando Lecce Claudio Ricci Riccardo Casadei Bruno Cola Francesco Minni 《世界胃肠肿瘤学杂志:英文版(电子版)》 CAS 2018年第10期293-316,共24页
Synchronous colorectal carcinoma(SCRC)indicates more than one primary colorectal carcinoma(CRC)discovered at the time of initial presentation,accounts for 3.1%-3.9%of CRC,and may occur either in the same or in differe... Synchronous colorectal carcinoma(SCRC)indicates more than one primary colorectal carcinoma(CRC)discovered at the time of initial presentation,accounts for 3.1%-3.9%of CRC,and may occur either in the same or in different colorectal segments.The accurate preoperative diagnosis of SCRC is difficult and diagnostic failures may lead to inappropriate treatment and poorer prognosis.SCRC requires colorectal resections tailored to individual patients,based on the number,location,and stage of the tumours,from conventional or extended hemicolectomies to total colectomy or proctocolectomy,when established predisposing conditions exist.The overall perioperative risks of surgery for SCRC seem to be higher than for solitary CRC.Simultaneous colorectal and liver resection represents an appealing surgical strategy in selected patients with CRC and synchronous liver metastases(CRLM),even though the cumulative risks of the two procedures need to be adequately evaluated.Simultaneous resections have the noticeable risks of the two procedures need to be adequately evaluated.Simultaneous resections have the noticeable advantage of avoiding a second laparotomy,give the opportunity of an earlier initiation of adjuvant therapy,and may significantly reduce the hospital costs.Because an increasing number of recent studies have shown good results,with morbidity,perioperative hospitalization,and mortality rates comparable to staged resections,simultaneous procedures can be selectively proposed even in case of complex colorectal resections,including those for SCRC and rectal cancer.However,in patients with multiple bilobar CRLM,major hepatectomies performed simultaneously with colorectal resection have been associated with significant perioperative risks.Conservative or parenchymal-sparing hepatectomies reduce the extent of hepatectomy while preserving oncological radicality,and may represent the best option for selected patients with multiple CRLM involving both liver lobes.Parenchymal-sparing liver resection,instead of major or two-stage hep 展开更多
关键词 COLORECTAL SURGERY SYNCHRONOUS COLORECTAL LIVER metastases Major HEPATECTOMY Parenchymalsparing HEPATECTOMY Intraoperative ultrasonography SIMULTANEOUS COLORECTAL and LIVER SURGERY SYNCHRONOUS COLORECTAL carcinoma Ablative therapies
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