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Short-term outcomes of overlapped delta-shaped anastomosis, an innovative intracorporeal anastomosis technique, in totally laparoscopic colectomy for colon cancer

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World Journal of Gastroenterology 2017年第36期23卷 6726-6732页

作者： Hai-Tao Zhou Peng Wang Jian-Wei Liang Hao Su Zhi-Xiang Zhou Department of Colorectal Surgery National Cancer Center/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021

AIM To introduce an innovative intracorporeal anastomosis technique named overlapped delta-shaped anastomosis(ODA)for colon cancer cases undergoing totally laparoscopic colectomy(TLC)and to assess its feasibility and safety. METHODS From January 2016 to March 2017,a total of 20consecutive patients with colon cancer accepted TLC and the ODA technique at our medical *** demographics,operative outcomes,perioperative complications,and pathological results were collected and analyzed. RESULTS We successfully completed TLC and the ODA procedure in all 20 cases,including 6(30%)males and 14(70%)*** total,11(55%),2(10%),and 7(35%)cases accepted right hemicolectomy,transverse hemicolectomy,and left hemicolectomy,*** of the surgeries were converted to an open *** operative time was 178.5 min,and mean estimated blood loss was 58.5 m *** time to first flatus was 2.5 d,and mean postoperative hospitalization duration was 6.8 *** severe complications occurred,such as anastomotic leakage,snastomotic stenosis,anastomotic bleeding,and wound infection,except for one case who suffered from an abdominal infection and another case who suffered from gastric paralysis *** recurrence was not observed in any patient during the follow-up period. CONCLUSION The ODA technique for colon cancer cases undergoing TLC appears to be safe and feasible,although our current results need to be verified in further studies.

关键词： overlapped delta-shaped anastomosis Safety Totally laparoscopic colectomy Intracorporeal anastomosis Colon cancer

Spline wavelet overlapped peaks analysis

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Chinese Science Bulletin 1999年第10期44卷 901-904页

作者： Xiaoyong Zou Jinyuan Mo Zhongshan Univ Dept Chem Canton 510275 Peoples R China

The proposed method of spline wavelet overlapped peaks analysis is based on the model of wavelet multifrequency channel decomposition. If the suitable optimal wavelet basis and frequency scale value are selected, the useful information can be extracted from noised overlapped signal. Then, according to the linear relationship between individual components in blurred version, multiple linear regression in low frequency domain is employed to resolve highly overlapped peaks. The results show that even signal-to-noise (S/N) decreases to 0.2, relative errors of peak intensity are less than 12% and the sum of square deviations Q is less than 0.

关键词： wavelet filtering overlapped peaks resolution.

overlapped OFDMA——新颖的多载波频谱共享传输机制

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浙江大学学报（工学版） 2013年第5期47卷 860-866页

作者：宫本康张朝阳叶露浙江大学信息与电子工程学系浙江杭州310027

针对现有非连续正交频分复用(DOFDM)等系统通常只允许认知用户利用授权用户未使用的频带进行共享传输的问题,提出一种新颖的频谱共享传输机制,即混叠正交频分复用多址接入(overlapped OFDMA),能够在一定条件下实现认知用户与授权用户的... 详细信息

针对现有非连续正交频分复用(DOFDM)等系统通常只允许认知用户利用授权用户未使用的频带进行共享传输的问题,提出一种新颖的频谱共享传输机制,即混叠正交频分复用多址接入(overlapped OFDMA),能够在一定条件下实现认知用户与授权用户的混叠频谱共享.通过对一般OFDM系统的信号结构进行研究发现,当认知用户的子载波带宽采用授权用户子载波带宽的一半进行传输、其频谱和授权用户频谱存在一定混叠时,只要认知用户保持和授权用户时域信号准同步且其子载波分配方案满足一定的限制条件,授权用户将不受干扰.由于各载波上的干扰都包含有其它载波的信息,因此认知用户可以通过适当的恢复算法将信息完整地恢复.仿真和分析结果表明,尽管overlapped OFDMA会带来一定的复杂度,但授权用户的性能和DOFDM系统相比几乎相同,而认知用户却获得了更加优异的吞吐量性能.该机制为频谱共享传输体制的设计提供了新的可能性.

关键词： overlapped OFDMA 认知无线电频谱共享传输

Separation of multimode Lamb waves overlapped in time and frequency domains by using fractional differential

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Chinese Journal of Acoustics 2021年第1期40卷 126-140页

作者： CHEN Xiao NI Long School of Electronic and Information Engineering Nanjing University of Information Science and TechnologyNanjing 210044 Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science and TechnologyNanjing 210044

To separate multimode Lamb wave overlapped both in time and frequency domains,a multimode Lamb wave signal separation method by using fractional differential is *** Tsallis function is used as the model of the amplitude *** amplitude spectra of Lamb wave signals are divided into fractional order *** characteristic parameters of each mode are extracted by using the polynomial between the maximum amplitude and the differential order as well as the polynomial between the peak frequency and the differential *** corresponding phase spectrum of each mode is derived from the dispersion *** signal of each mode is constructed through the amplitude spectrum and phase *** simulated results of S1 and A1 modes in a 1 mm-thick steel plate show that the relative errors of amplitude and bandwidth of both modes are less than 6%,and that the relative errors of central frequency of both modes are less than 0.25%.Therefore,this method could be used to separate the time-frequency overlapped multimode Lamb wave *** is helpful for the analysis and recognition of multimode Lamb wave signals.

关键词： spectrum. fractional overlapped

overlapped Tray Seedling Raising Model for Mechanical Transplanting of Rice

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Asian Agricultural Research 2019年第1期11卷 56-59页

作者： Defeng ZHU Yuejun WANG Huizhe CHEN Yicheng XU Yiping CHEN China National Rice Research Institute Zhejiang Provincial Center of Agricultural Technology Extension

With the development of China's social economy,transfer of rural labors,and rise of labor costs,the rice production technologies are changing from manual operation to mechanical *** core of mechanical rice production is mechanical planting,while the key to mechanical planting is the seedling *** the basis of analyzing and studying the problems and experience of traditional mechanical transplanting of rice,a new overlapped tray seedling raising model was *** features of this model: substrate seedling raising and overlapped seedling *** seedling trays for seeding line are overlapped,and the overlapped trays are moved into the seedling room with controlled temperature and *** temperature of the seedling room is controlled at 30-32℃,and the humidity of the seedling room is controlled at above 90%.After about 48 h,when the seedling height reaches 0.5 cm,move the seedling trays to the *** model consists of one seeding center( seedling raising center) and N nurseries,to realize 1 + N seedling raising for mechanical transplanting of *** seeding center can provide seedlings for several hundred to several thousand hectares of mechanical transplanting of rice,and provide a new model for social *** model could improve the quality of seedlings,increase the seedling survival rate by about 20%,reduce the seedling raising costs by 15%-20%,reduce the seedling raising risks,and greatly increase the utilization rate of the site and equipment of seedling raising center.

关键词： Rice Mechanical transplanting Seedling raising overlapped tray

overlapped Subarray Architecture of an Wideband Phased Array Antenna with Interference Suppression Capability

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Journal of Electromagnetic Analysis and Applications 2013年第5期5卷 201-204页

作者： Quazi Md. Alfred Tapas Chakravarty Salil Kumar Sanyal Department of Electronics and Communication Engineering University Institute of Technology University of Burdwan Burdwan India Department of Electronics and Telecommunication Engineering Jadavpur University Kolkata India Tata Consultancy Services Kolkata India

This paper presents a novel architecture of combining the linear array of antenna elements, where each antenna element has digitally selectable true time-delays as weights. Use of time-delays for beam-formation inherently makes the phased array network a wideband system. In particular, this technique envisage a new method of sharing antenna elements, by fixed overlapped sub-array architecture, which is able to maintain permissible element spacing to avoid grating lobe in antenna pattern. Moreover, this scheme additionally offers an easier null steering capability to the subarray architecture. This method essentially eliminates the need for intensive computation of complex weight vectors attached to each antenna element.

关键词： Phased Array Subarray Time-Delay overlapped Array

Ultimate Strength of Completely overlapped Joint for Fixed Offshore Wind Turbine Jacket Substructures

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Journal of Marine Science and Application 2019年第1期18卷 99-113页

作者： Wie Min Gho Ye Yang Maritime Production Research Pte.Ltd School of Civil and Environmental Engineering Nanyang Technological University Global Maritime Consultancy Ltd

This paper presents an innovative eccentric jacket substructure for offshore wind turbines to better withstand intense environmental forces and to replace conventional X-braced jackets in seismically active areas. The proposed eccentric jacket comprises of completely overlapped joint at every joint connection. The joint consists of a chord and two braces in a single plane. The two braces are fully overlapped with a short segment of the diagonal brace welded directly onto the chord. The characteristic feature of this joint configuration is that the short segment member can be designed to absorb and dissipate energy under cyclic load excitation. The experimental and numerical study revealed that the completely overlapped joint performed better in terms of strength resistance, stiffness, ductility, and energy absorption capacity than the conventional gap joints commonly found in typical X-braced jacket framings. The eccentric jacket could also be designed to becoming less stiff, with an inelastic yielding and local buckling of short segment member, so as to better resist the cyclic load generated from intense environmental forces and earthquake. From the design economics, the eccentric jacket provided a more straightforward fabrication with reduced number of welded joints and shorter thicker wall cans than the conventional X-braced jacket. It can therefore be concluded based on the results presented in the study that by designing the short segment member in accordance with strength and ductility requirement,the eccentric jacket substructure supporting the wind turbine could be made to remain stable under gravity loads and to sustain a significantly large amount of motion in the event of rare and intense earthquake or environmental forces, without collapsing.

关键词： Offshore wind turbine Jacket substructure Eccentric jacket Completely overlapped joint Ultimate strength Cyclic loading Ductility Energy absorption

Characteristics of flow and heat transfer of shell-and-tube heat exchangers with overlapped helical baffles

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Frontiers of Engineering Management 2019年第1期6卷 70-77页

作者： Tingting DU Wenjing DU School of Energy and Power Engineering Shandong University Jinan 250061 China

The characteristics of flow and heat transfer of shell-and-tube heat exchangers with overlapped helical baffles (STHXsHB) were illustrated through a theoretical analysis and numerical simulation. The ideal helical flow model was constructed to demonstrate parts of the flow characteristics of the STHXsHB, providing theoretical evidence of short-circuit and back flows in a triangular zone. The numerical simulation was adopted to describe the characteristics of helical, leakage, and bypass streams. In a fully developed section, the distribution of velocity and wall heat transfer coefficient has a similar trend, which presents the effect of leakage and bypass streams. The short-circuit flow accelerates the axial velocity of the flow through the triangular zone. Moreover, the back flow enhances the local heat transfer and causes the ascent of flow resistance. This study shows the detailed features of helical flow in STHXsHB, which can inspire a reasonable optimization on the shell-side structure.

关键词： heat exchanger overlapped helical baffle triangular zone helical flow

Research on Separating overlapped Explosion Recordings

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Earthquake Research in China 1999年第1期13卷 27-34页

作者： Yang Xuanhui, Shen Ping, and Dong TingCenter for Seismic Data and Information, CSB, Beijing 100045, China Institute of Geophysics, CSB, Beijing 100081, China

By using wavelet analysis and the co-deduct method, under the condition that two explosions are supposed to have the same mechanism and strength, we separated the overlapped recordings successfully.

关键词： Wavelet analysis Separating overlapped recording Co-deduct method.