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| 1 | Homotopic mapping solving method for gain fluency of a laser pulse amplifier显示文摘The model for gain fluency of a laser pulse amplifier is studied. Using the homotopic mapping method, firstly, the system of the original model is packed up standardization; secondly, introducing a homotopic mapping, taking the property of the mapping, inducing a contrived parameter, the solving of a nonlinear problem translates into the solving of a linear problem. Then the approximate expressions of the solution for the corresponding model are obtained. And the precision for the approximate solution is compared. It illuminates that the obtained approximate solution using the homotopic mapping method possesses higher approximate degree. At one time, the expansion of solution through the homotopic mapping method can be kept in the analytic operation. Thus it also enables us through differential and integral operations to obtain other physics behavior for the gain fluency of laser pulse amplifier. | MO JiaQi1,2 1 Anhui Normal University, Wuhu 241000, China 2 Division of Computational Science, E-Institutes of Shanghai Universities, at SJTU, Shanghai 200240, China | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，7： | 124 |
| 2 | OSCILLATION CONDITION OF SIMULTANEOUS MULTIPLE WAVELENGTH LASING显示文摘The oscillation condition of simultaneous multiple wavelength lasing(SMWL)has been established.The reliability of result has been verified by experiment.On the basis of this result,the SMWL have achieved in CW and pulse Nd:YAP laser at both 1.0795μm and 1.3414μm. | SHEN Hongyuan | 1990 | Chinese Physics Letters1990，7，4： | 28 |
| 3 | Using lightning locating system based on time-of-arrival technique to study three-dimensional lightning discharge processes显示文摘A time-of-arrival(TOA) system based on GPS technology for locating VHF radiation sources from lightning has been developed and used in observation sites in the northern Shandong Province,China.The 3D images of the lightning progression have been obtained successfully for the first time in China.The 3D-channel evolutions of typical negative CG,positive CG and IC lightning flashes have been discussed together with the data of fast electric field change.It was found that significant differences existed between the negative and positive CG lightning flashes in terms of the initiation and propagation of the radiation sources.The preliminary breakdown of a negative CG lightning flash propagated at a speed about 5.2×104 m/s.The stepped leader of negative CG lightning flashes was trigged by negative initial breakdown.Thereafter,it propagated downward at a speed of 1.3×105 m/s.The initial process of the positive CG lightning flashes was also a propagation process of negative streamer.These streamers propagated dominantly horizontally in the positive charge region and accumulated positive charges at the origin of the lightning,and as a consequence,initiated downward positive streamers.A new type of lightning discharge that was triggered by a narrow bipolar pulse(NBP) is discussed in this study.The NBP was originated at altitude of about 10.5 km in the upper positive charge region.As a distinct difference from normal IC flash,its channels extended horizontally all around and produced a lot of radiation sources.The source power of the NBP could approach 16.7 kW,which is much greater than that of normal lightning discharge ranging between 100 mW and 500 W.The 3D propagation of this new type of lightning discharge was observed and obtained for the first time in China.The possible initiation mechanism of this new type of light-ning is discussed here. | ZHANG GuangShu1,WANG YanHui1,QIE XiuShu2,ZHANG Tong1,ZHAO YuXiang1,3,LI YaJun1 & CAO DongJie11 Laboratory for Climate Environment and Disasters of Western China,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China 2 Laboratory for Middle Atmosphere and Global Environment Observation(LAGEO),Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China 3 Department of Physics,Tianshui Normal College,Tianshui 741001,China | 2010 | Science China Earth Sciences2010，53，4： | 21 |
| 4 | 超宽带电磁脉冲对腔体孔缝耦合效应的数值模拟显示文摘为了解孔缝耦合对超宽带电磁脉冲干扰和毁伤电子设备的影响,应用时域有限差分法对长方腔体上不同形状的孔缝耦合效应进行了数值研究。选取mm量级的微小孔缝为研究对象,分析不同入射角度、不同脉宽的激励源对耦合效应的影响,得到了孔腔共振效应、孔缝增强效应和腔体内场强的分布规律。研究表明:长方孔在孔缝附近存在明显的增强效应,超宽带脉冲对正三角孔和方阵的耦合系数最小,脉宽短的入射脉冲耦合效应明显强于脉宽长的脉冲,耦合效应基本随入射角的减小而缓慢减小。 | 肖金石 刘文化 张世英 张金华 | 2010 | 强激光与粒子束2010，22，12： | 12 |
| 5 | 水润滑橡胶艉轴承动态性能的试验与分析显示文摘针对船舶艉轴承的减振降噪进行橡胶材料硬度对艉轴系振动影响的试验研究。通过Pulse振动分析平台对艉轴承的振动情况进行数据采集和分析,应用振动频谱分析法得出对于常工作在低速重载工况下的水润滑橡胶轴承其内表面宜趋近的邵氏硬度为80时,对于中高速则可稍微提高一些。 | 金勇 刘正林 | 2011 | 噪声与振动控制2011，31，4： | 12 |
| 6 | Management hepatolithiasis with operative choledochoscopic FREDDY laser lithotripsy combined with or without hepatectomy显示文摘BACKGROUND: Hepatolithiasis is very common in East Asia. It is benign in nature, but has a high recurrence rate. It is likely to lead to biliary cirrhosis and increase the risk of cholangiocarcinoma. Hence, the treatment of hepatolithiasis is difficult but vital. In this report, we present a novel approach to manage hepatolithiasis using the choledochoscopic Frequency-Doubled Double pulse Nd:YAG (FREDDY) laser lithotripsy combined with or without hepatectomy. METHODS: Between July 2009 and October 2012, 45 patients underwent choledochoscopic FREDDY laser lithotripsy combined with or without hepatectomy (laser lithotripsy group). Fortyeight patients underwent a traditional operation (traditional method group) from January 2009 to June 2009. Comparative analysis was made of demographic and clinical characteristics of the two groups. RESULTS: The final stone clearance rate of the laser lithotripsy group was 93.3%, whereas that of the traditional method group was 85.4% (P=0.22). In the laser lithotripsy group, 2 patients experienced hemobilia and 3 patients had acute cholangitis. In the traditional method group, 3 patients had intraoperative hemorrhage, 1 patient had bile leakage, 6 patients had acute cholangitis, and 1 patient died of liver failure. Moreover, the operative time in the traditional method group was significantly longer than that in the laser lithotripsy group (P=0.01). The mean hospital stay of the patients in the traditional method group was longer than that in the laser lithotripsy group (9.8 vs8.2 days, P=0.17). Recurrent intrahepatic bile duct stones were not found during the follow-up period in the two groups. CONCLUSION: Operative choledochoscopic FREDDY laser lithotripsy combined with or without hepatectomy may be an effective and safe treatment for hepatolithiasis. | Zhi-Jun Jiang Ying Chen Wei-Lin Wang Yan Shen Min Zhang Hai-Yang Xie Lin Zhou Shu-Sen Zheng | 2013 | Hepatobiliary & Pancreatic Diseases International2013，12，2： | 11 |
| 7 | Inflammatory pseudotumor of the liver and spleen diagnosed by percutaneous needle biopsy显示文摘An inflammatory pseudotumor (IPT) is a relatively rare lesion characterized by chronic inf iltration of inflammatory cells and areas of f ibrosis. IPTs are diff icult to diagnose because of the absence of specif ic symptoms or of characteristic hematological or radiological f indings. In this study, a case of a woman aged over 70 years was reported, who presented with a general malaise lasting more than two months. A computed tomography scan demonstrated a diffusely spread lesion of the liver with a portal vein occlusion and a splenic lesion surrounded by a soft density layer. Since the percutaneous liver biopsy showed f indings that suggested an IPT, although the radiological f indings did not exclude the possibility of a malignancy, we performed a percutaneous spleen biopsy to enable a more defi nitive diagnosis. The microscopic f indings from the spleen specimen lead us to a diagnosis of IPT involving the liver and spleen. Sub-sequent steroid pulse therapy was effective, and rapid resolution of the disease was observed. | Tsukasa Kawaguchi Kiyoshi Mochizuki Takashi Kizu Masanori Miyazaki Takayuki Yakushijin Shusaku Tsutsui Eiichi Morii Tetsuo Takehara | 2012 | World Journal of Gastroenterology2012，18，1： | 11 |
| 8 | Sorting radar signal from symmetry clustering perspective显示文摘The main function of electronic support measure system is to detect threating signals in order to take countermeasures against them. To accomplish this objective, a process of associating each interleaved pulse with its emitter must be done. This process is termed sorting or de-interleaving. A novel point symmetry based radar sorting(PSBRS) algorithm is addressed. In order to deal with all kinds of radar signals, the symmetry measure distance is used to cluster pulses instead of the conventional Euclidean distance. The reference points of the symmetrical clusters are initialized by the alternative fuzzy c-means(AFCM) algorithm to ameliorate the effects of noise and the false sorting. Besides,the density filtering(DF) algorithm is proposed to discard the noise pulses or clutter. The performance of the algorithm is evaluated under the effects of noise and missing pulses. It has been observed that the PSBRS algorithm can cope with a large number of noise pulses and it is completely independent of missing pulses.Finally, PSBRS is compared with some benchmark algorithms,and the simulation results reveal the feasibility and efficiency of the algorithm. | Mohaned Giess Shokrallah Ahmed Bin Tang | 2017 | Journal of Systems Engineering and Electronics2017，28，4： | 10 |
| 9 | Effect of Shen-Fu Injection(参附注射液)on Hemodynamics in Early Volume Resuscitation Treated Septic Shock Patients显示文摘Objective: To investigate the hemodynamic effect of Shen-Fu Injection(参附注射液, SFI) in early volume resuscitation treated septic shock patients by monitoring pulse indicator continuous cardiac output(PICCO). Methods: All septic shock patients admitted in the Intensive Care Unit of the Affiliated Hospital of Shandong University of Traditional Chinese Medicine from January 1 st, 2014 to December 31 th, 2015, were reviewed, and totally 65 were enrolled in this study. They were assigned to SFI group(33 cases) and control group(32 cases). All 65 patients underwent conventional treatment mainly including volume resuscitation, antibiotics and vasoactive drugs therapy. The patients of the SFI group received additional 100 mL of SFI intravenously every 12 h. In all 65 patients, the PICCO arterial catheter and vein catheter were implanted within 1 h after the diagnosis of septic shock. In the course of early volume resuscitation, hemodynamic data of patients were recorded by PICCO monitor at 0, 12, and 24 h after the catheter implantation. Results: The hemodynamic indices of the two groups showed no significant differences at the beginning of 0 h(P>0.05). At 12 and 24 h, the hemodynamic indices of SFI group were significantly improved in comparison with the control group(P<0.05), including cardiac index(CI), global end diastolic volume index(GEDI), mean arterial pressure(MAP) and heart rate(HR). In addition, there was no significant change of extra-vascular lung water index between the two groups(P>0.05). Conclusion: SFI significantly improved hemodynamic indices such as CI, GEDI, MAP and HR in early volume resuscitation treated septic shock patients. | FAN Kai-liang WANG Jun-hui KONG Li ZHANG Fei-hu HAO Hao ZHAO Hao TIAN Zheng-yun YIN Ming-xin FANG Hua YANG Hui-hui LIU Yang | 2019 | Chinese Journal of Integrative Medicine2019，25，1： | 10 |
| 10 | U100激光碎石机治疗尿路结石的手术配合显示文摘 | 冯素贞 | 2005 | 护理与康复2005，4，4： | 9 |
| 11 | 基于NSCT与区域点火PCNN的医学图像融合方法显示文摘为了进一步改善医学图像融合质量,提出一种基于NSCT(非下采样Contourlet变换)与区域点火PCNN(脉冲耦合神经网络)的医学图像融合方法。该方法在低频子带系数采用基于区域点火PCNN的融合规则,应用PCNN改进的简化模型,将低频子带系数作为信号激励PCNN网络,利用点火区域强度分析区域点火特性,根据区域点火特性确定低频子带融合系数;在选择带通方向子带系数时,充分利用非下采样Contourlet变换的方向特性,采用改进的拉普拉斯能量作为带通方向子带系数的融合规则。实验结果表明,该方法与传统融合方法相比,能够较好的保留图像的边缘和过渡区域信息,大幅度提高融合图像的质量。 | 杨艳春 王晓明 党建武 王阳萍 | 2014 | 系统仿真学报2014，26，2： | 9 |
| 12 | 基于ZigBee的养老院健康监护系统设计显示文摘针对养老院中对老人的监护需求,提出一种基于ZigBee无线通信技术的养老院健康监护方案,设计一个经济实用的低功耗ZigBee无线监测系统;系统各个节点以CC2530为核心,通过控制Pulse Sensor脉搏传感器、DS18B20体温传感器、XGZP6847血压传感器来采集老人的生命体征数据;数据通过监护中心进行监测与分析,如果超出健康范围,系统将进行语音提示并通知护工;实验表明该系统可以有效提高养老院的监护水平。 | 孔维康 陶帅 汪祖民 | 2016 | 计算机测量与控制2016，24，1： | 9 |
| 13 | Experimental characteristics of a two-electrode plasma synthetic jet actuator array in serial显示文摘Plasma Synthetic Jet(PSJ) actuators have shown wide and promising application prospects in high-speed flow control, due to their advantages including high exhaust speed, wide frequency band, rapid response, and non-moving components. Although previous studies on PSJ actuators are abundant, most of them have focused on the performance of a single actuator. However, in practice, an actuator array is very necessary for large-scale aerodynamic actuation on account of the small affected area of a single PSJ. In this paper, the characteristics of a twoelectrode plasma synthetic jet actuator array in serial are investigated experimentally. Compared to a parallel actuator array, the serial actuator array requires simpler power supply design and is much easier to realize. High-speed photography of the discharge evolution, voltage-current measurement, and shadowgraphy visualization are used in the investigation. Experimental results show that, for the serial actuator array, weak discharges happen firstly between energized and suspending electrodes, and then a strong pulse arc discharge is triggered. The breakdown voltage in serial is irrelevant to such factors as the number of actuators, the maximum or minimum gap in serial,the connection sequence, etc. It is mainly determined by the sum of gaps. For serial actuators with the same anode-to-cathode spacing, the energy deposition is the same, and the jet is synchronous and similar. Because of the entrainment and merging of adjacent jet vortices, the jet front speed of an aligned synchronous jet array increases as the orifice distance decreases. To achieve the highest jet front velocity, the orifice of the actuator has an optimal diameter. | Yan ZHOU Zhixun XIA Zhenbing LUO Lin WANG Xiong DENG | 2018 | Chinese Journal of Aeronautics2018，31，12： | 9 |
| 14 | On-chip programmable pulse processor employing cascaded MZI-MRR structure显示文摘Optical pulse processor meets the urgent demand for high-speed,ultra wideband devices,which can avoid electrical confinements in various fields,e.g.,alloptical communication,optical computing technology,cohcrcnt control and microwave fields.To date,great efforts have been madc particularly in on-chip programmable pulse proccessing.Here,we experimentally demonstrate a programmable pulse proceesor employing 16cascaded Mach-Zehnder interferometer coupled microring resonator(MZI-MRR)structure based on silicon-oninsulator wafer.With micro-heaters loaded to the device,both amplitude and frequency tunings can be realized in each MZI-MRR unit.Thanks to its reconfigurability and integration ability,First,it can serve as a fractional differentiator whose tuning range is 0.51-2.23 with deviation no more than 7%.Second,the device can be tuned into a programmable optical filter whose bandwidth varies from 0.15to 0.97nm.The optical filter is also shape tunable.Especially,15-channel wavelength selective switches are generated. | Yuhe ZHAO Xu WANG Dingshan GAO Jianji DONG Xinliang ZHANG | 2019 | Frontiers of Optoelectronics2019，12，2： | 9 |
| 15 | 基于电流环复合控制的有源电力滤波器研究显示文摘为了有效降低非周期信号对三相三线APF控制性能的影响,提出了一种改进重复控制与传统PI控制相串联的双环控制方法。该方法加入了控制前馈和误差比例系数以提高系统对非周期信号的抗扰性能。结合APF在旋转d,q坐标系中的简化数学模型,建立了电压、电流解耦环节,对解耦后的d,q轴电流i d,i q分别进行控制,并采用SVPWM控制策略,以TM320F28335型DSP为处理器,在APF50A样机上进行了实验,实验结果表明了改进的控制算法具有很好的鲁棒性。 | 杨新华 谢斌 | 2014 | 电气传动2014，44，2： | 8 |
| 16 | Application of pulse index continuous cardiac output system in elderly patients with acute myocardial infarction complicated by cardiogenic shock: A prospective randomized study显示文摘BACKGROUND Cardiogenic shock (CS) secondary to acute myocardial infarction (AMI) complicates management of the condition, and often leads to poor prognosis. Prompt and accurate monitoring of cardiovascular and accompanying hemodynamic changes is crucial in achieving adequate management of the condition. Advances in technology has availed procedures such as pulse index continuous cardiac output (PiCCO), which can offer precise monitoring of cardiovascular functions and hemodynamic parameters. In this study, PiCCO is evaluated for its potential utility in improving management and clinical outcomes among elderly patients with AMI complicated by CS. AIM To assess whether use of the PiCCO system can improve clinical outcomes in elderly patients with AMI complicated by CS.METHODS Patients from emergency intensive care units (EICU) or coronary care units (CCU) were randomized to receive PiCCO monitoring or not. The APACHE II score, SOFA score, hs-TnI, NT-proBNP, PaO2/FiO2 ratio and lactate levels on day 1, 3 and 7 after treatment were compared. The infusion and urine volume at 0-24 h, 24-48 h and 48-72 h were recorded, as were the cardiac index (CI), extravascular lung water index (EVLWI), intrathoracic blood volume index (ITBVI) and global end diastolic volume index (GEDVI) at similar time intervals. RESULTS Sixty patients with AMI complicated by CS were included in the study. The PiCCO group had a significantly lower APACHE II score, SOFA score, hs-TnI and NT-proBNP levels on day 1, 3 and 7 after treatment. The infusion and urine volume during 0-24 h in the PiCCO group were significantly greater, and this group also showed significantly higher ADL scores. Furthermore, the PiCCO group spent lesser days on vasoactive agents, mechanical ventilation, and had a reduced length of stay in EICU/CCU. Additionally, the CI was significantly higher at 48 h and 72 h in the PiCCO group compared with that at 24 h, and the EVLWI, ITBVI and GEDVI were significantly decreased at 48 h and 72 h. CONCLUSION Applying the PiCCO system could improve the clinical outcomes of elderly patients with AMI complicated by CS. | Yuan-Bo Zhang Zhi-Zhong Zhang Jun-Xia Li Yu-Hong Wang Wei-Lin Zhang Xin-Li Tian Yun-Feng Han Meng Yang Yu Liu | 2019 | World Journal of Clinical Cases2019，7，11： | 8 |
| 17 | Analysis of Pulse Signals Based on Array Pulse Volume显示文摘Objective: To collect and analyze multi-dimensional pulse diagram features with the array sensor of a pressure profile system(PPS) and study the characteristic parameters of the new multi-dimensional pulse diagram by pulse diagram analysis technology. Methods: The pulse signals at the Guan position of left wrist were acquired from 105 volunteers at the Shanghai University of Traditional Chinese Medicine. We obtained the pulse data using an array sensor with 3×4 channels. Three dimensional pulse diagrams were constructed for the validated pulse data, and the array pulse volume(APV) parameter was computed by a linear interpolation algorithm. The APV differences among normal pulse(NP), wiry pulse(WP) and slippery pulse(SP) were analyzed using one-way analysis of variance. The coefficients of variation(CV) were calculated for WP, SP and NP. Results: The APV difference between WP and NP in the 105 volunteers was statistically significant(6.26±0.28 vs. 6.04±0.36, P=0.048), as well as the difference between WP and SP(6.26±0.28 vs. 6.07±0.46, P=0.049). However, no statistically significant difference was found between NP and SP(P=0.75). WP showed a similar CV(4.47%) to those of NP(5.96%) and SP(7.58%). Conclusion: The new parameter APV could differentiate between NP or SP and WP. Accordingly, APV could be considered an useful parameter for the analysis of array pulse diagrams in Chinese medicine. | CUI Ji TU Li-ping ZHANG Jian-feng ZHANG Shao-liang ZHANG Zhi-feng XU Jia-tuo | 2019 | Chinese Journal of Integrative Medicine2019，25，2： | 8 |
| 18 | Comparison of perceived pain and patients’ satisfaction with traditional local anesthesia and single tooth anesthesia: A randomized clinical trial显示文摘BACKGROUND Contemporary innovations in the area of local anesthesia have attempted to provide an absolutely pain free experience for patients.Since the introduction of Computer-Controlled Local Anesthetic Delivery Systems to dentistry,many studies have compared its efficacy and safety to conventional anesthesia.However,very few studies have compared single tooth anesthesia(STA)and traditional local anesthesia.AIM To compare pain rating,changes in blood pressure,and heart rate during the local anesthetic injection.The secondary objectives were to measure the patients’level of satisfaction and the differences in anesthetic efficiency between the STA system and traditional local infiltration.METHODS A randomized controlled trial was conducted and a total of 80 patients with dental restorative needs were enrolled for the study.The patients were evaluated for their general physical status and oral clinical findings before enrollment.Information regarding perceived pain,changes in heart rate and blood pressure,and patients’satisfaction was collected using an electronic data form and was analyzed using paired and unpaired t-tests.RESULTS No significant difference was noted in perceived pain(P=0.59)and systolic blood pressure(P=0.09)during anesthetic injection using both traditional and STA techniques.STA patients had a significantly higher heart rate during anesthesia,although a statistically significant difference was noted among the traditional anesthesia and the STA groups even before anesthesia.During the restorative procedure,less pain was perceived by STA patients on the Wong-Baker FACES pain scale,which was statistically significant(P<0.001).Analyses of post-procedure patient responses showed that STA patients had a significantly better treatment experience and preferred to have the same method of injection in the future(P=0.04).CONCLUSION STA system can provide less painful and more comfortable restorative treatment procedures in comparison to the traditional infiltration technique. | Mohammad I Al-Obaida Mehdiya Haider Rawan Hashim Wafa AlGheriri Sree Lalita Celur Samar A Al-Saleh Ebtissam M Al-Madi | 2019 | World Journal of Clinical Cases2019，7，19： | 8 |
| 19 | 基于Pulse的船舶尾轴承振动监测显示文摘针对船舶尾轴承的减振降噪提出了一种基于Pulse的振动测试方案。通过该振动分析平台对实验尾轴台架的振动情况进行了数据采集和分析,利用FFT频谱分析法得出尾轴承在采用橡胶轴承材料时,其低速下由自身特性导致的水平和垂直方向上的振动主要集中在2 kHz以下。 | 金勇 刘正林 田宇忠 刘琴华 | 2010 | 武汉理工大学学报2010，32，6： | 8 |
| 20 | 非线性传输线产生射频脉冲原理研究显示文摘介绍了非线性传输线的工作原理和色散特性,给出了用于模拟交叉耦合磁饱和非线性传输线的计算方法。算法基于传输线各节点的时域差分方程组进行步进迭代,其中利用J-A模型描述传输线中NiZn铁氧体磁芯的非线性磁化行为,并模拟了非线性传输线的工作方式。实验获得了中心频率165MHz的宽带脉冲输出,初步验证了用于产生宽带电磁脉冲的非线性传输线关键技术。 | 谢平 徐刚 廖勇 石小燕 杨周炳 | 2014 | 强激光与粒子束2014，26，4： | 8 |
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