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Level Crossing of N*(1535)-hole and η Modes and partial Restoration of Chiral Symmetry in η-mesic Nuclei

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原子核物理评论 2009年第S1期26卷 100-103页

作者： H.Nagahiro D.Jido E.E.Kolomeitsev S.Hirenzaki Research Center for Nuclear Physics(RCNP) Osaka University Yukawa Institute for Theoretical Physics Kyoto University School of Physics and Astronomy University of Minnesota Gesellschaft fr Schwerionenforschung (GSI) Department of Physics Nara Women's University

We investigate the properties of the η-nucleus interaction by postulating the N*(1535) dominance for ηN system. Since the mass gap of N* and N is very close to the η meson mass,there is the possibility of the level crossing between the N*-h and η modes in finite density. We postulate the N*(1535) resonance for the ηN system and consider quite distinct N* properties in finite density which are predicted by two independent chiral models. We find that we can obtain clearer information on the in-medium N* properties and also on the η-nucleus interaction through the formation of the η-mesic nuclei by (π,N) reactions under the appropriate experimental conditions,which can be performed at existing and/or forthcoming facilities like J-PARC.

关键词： A eta-mesic nuclei N*(1535) in medium partial restoration of chiral symmetry

水声OFDM中基于partial FFT和判决反馈的信道估计算法

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电子科学技术 2015年第6期2卷 665-669页

作者：董航黄蕾中国电子科技集团公司第三十八研究所安徽合肥230088

对于移动的水下接收机,接收到的信号首先进行重采样来补偿时间标尺的缩放,然而,重采样引入的误差、漂浮的发射机和接收机都会引起严重的剩余多普勒,数量级为10-4。本文针对剩余多普勒,提出一种基于判决反馈和partial FFT的信道均衡算法... 详细信息

对于移动的水下接收机,接收到的信号首先进行重采样来补偿时间标尺的缩放,然而,重采样引入的误差、漂浮的发射机和接收机都会引起严重的剩余多普勒,数量级为10-4。本文针对剩余多普勒,提出一种基于判决反馈和partial FFT的信道均衡算法。文章利用差错控制编码进行纠错判决,将纠错后的数据判决为导频进行信道估计。仿真和湖上实验结果表明,该算法在不降低频带利用率的情况下可以有效提高系统性能。

关键词：水声通信正交频分复用 partial FFT 判决反馈

Retroperitoneal Versus Transperitoneal Laparoscopic partial Nephrectomy: A Systematic Review and Meta-analysis

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Chinese Medical Sciences Journal 2015年第4期30卷 239-244页

作者： Jing Fu Shan Ye Hua-jian Ye Department of Urology Shaoxing Branch the First Affiliated Hospital of Zhejiang University School of Medicine (Shaoxing Second Hospital) Department of Public Health Tashan Community Health Service Center

Objective To review published literatures comparing the safety and effectiveness of retroperitoneal laparoscopic partial nephrectomy(RLPN) with transperitoneal laparoscopic partial nephrectomy(TLPN) and provide reference for clinical work. Methods The search strategy was performed to identify relevant papers from the Cochrane Central Register of Controlled Trials, EMBASE, MEDLINE, Google Scholar, China Hospital Knowledge Database, Wangfang Chinese Periodical Database, and VIP Chinese Periodical Database. All papers comparing RLPN with TLPN were included from 2000 to 2015. Two to three reviewers independently screened, evaluated, and extracted the included papers. A Meta-analysis was executed by using Review Manager 5.3 software. The interesting outcomes were tumor size, operating time, estimated blood loss, warm ischaemia time, length of hospital stay, positive margin rate, open conversion rate, overall complication rate, and recurrence rate. Results The literature search obtained 378 papers, then 10 of them were ultimately met the inclusion criteria and included in the systematic review. Finally, 6 of the 10 papers were included in the Meta-analysis. RLPN had significantly less operating time [P = 0.01, mean difference(MD)=-33.68, 95% confidence interval(CI) within(-60.35,-7.01)] and shorter length of hospital stay [P < 0.0001, MD=-1.47, 95% CI within(-2.18,-0.76)] than TLPN. Significant differences were not found between RLPN and TLPN in other outcomes. Conclusions RLPN may be equally safe and be faster than TLPN. Each center can choose a modality according to your own operating habits and experience.

关键词： retroperitoneal transperitoneal laparoscopy partial nephrectomy systematic review

Estrogen improves the hyperdynamic circulation and hyporeactivity of mesenteric arteries by alleviating oxidative stress in partial portal vein ligated rats

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World Journal of Gastroenterology 2013年第40期19卷 6863-6868页

作者： Bin Zhang Cheng-Gang Zhang Quan-Bo Zhou Wei Chen Zhi-Yong Wu Department of General Surgery Ren Ji HospitalSchool of MedicineShanghai Jiao Tong University

AIM:To evaluate the effects of estrogen(E2) on systemic and splanchnic hyperdynamic circulation in portal hypertensive rats.METHODS:Fifty castrated female Sprague-Dawley rats were divided into five groups:sham operation(SO),partial portal vein ligation(PPVL) + placebo(PLAC),PPVL + E2,PPVL + ICI and PPVL + E2 + ICI. Hemodynamic measurements were performed using ultrasonography. Mesenteric arteriole contractility in response to norepinephrine was determined using a vessel perfusion system. Oxidative stress in the mesenteric artery was investigated by in situ detection of the superoxide anion(O2) and hydrogen peroxide(H2O2) concentrations.RESULTS:Treatment with E2 resulted in a significant decrease of portal pressure(P < 0.01) and portal venous inflow(P < 0.05),and higher systemic vascular resistance(P < 0.05) and splanchnic arteriolar resistance(P < 0.01) in PPVL + E2 rats compared to PPVL+ PLAC rats. In the mesenteric arterioles of PPVL +E2 rats,the dose-response curve was shifted left,and the EC50was decreased(P < 0.01). E2 reduced O2 production and H2O2concentration in the mesenteric artery. However,ICI182,780 reversed the beneficial effects of E2,therefore,the systemic and splanchnic hyperdynamic circulation were more deteriorated in ICI182,780-treated rats.CONCLUSION:Treatment with estrogen improved the systemic and splanchnic hyperdynamic circulation in PPVL rats,in part due to the alleviation of oxidative stress.

关键词： Estrogen Hyperdynamic circulation partial portal vein ligation Oxidative stress

Fresh-Keeping Technology of Zander Fillet with Vacuum Packaging and partial Freezing

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Asian Agricultural Research 2016年第3期8卷 67-71页

作者： Qiang ZHANG Wenting DAI Xinwen JIN Institute of Agro-Products Processing Science and Technology Xinjiang Academy of Agricultural and Reclamation Science College of Food Science Hainan University

In order to explore the fresh-keeping methods for zander fillet,we use vacuum packaging and partial freezing to process zander fillet,conduct a comparative analysis of sensory characteristics,percentage of water loss,stiffness period,muscle stiffness,TVB-N and water activity during the storage,and assess the fresh-keeping effect of zander fillet under the conditions of vacuum packaging and partial freezing. The results show that zander can be dead after being placed into the 2℃ water for 30 min,and the stiffness period can be extended about 100 min compared with natural death; the percentage of water loss under the conditions of vacuum packaging before partial freezing is 2. 6% lower than under the conditions of partial freezing before vacuum packaging; after being stored at- 7℃ and- 4℃ for 15 d,TVB- N of fillet ≤15 mg /kg; TVB- N of fillet at- 7℃ is 25% lower than at- 4℃.

关键词： Zander fillet partial freezing Vacuum packaging Freshness

partial regularity of weak solutions for Landau-Lifshitz system with potential

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Science China Mathematics 2009年第5期52卷 981-990页

作者： CHU YuMing LIU XianGao Department of Mathematics Huzhou Teachers CollegeHuzhou 313000China Institute of Mathematics Fudan UniversityShanghai 200433China

In this note, we prove the partial regularity of stationary weak solutions for the Landau- Lifshitz system with general potential in four or three dimensional space. As well known, in general, since the constraint of the methods, in order to get the partial regularity of stationary weak solution of the Landau-Lifshitz system with potential, we need to add some very strongly conditions on the potential. The main difficulty caused by potential is how to find the equation satisfied by the scaling function, which breaks down the blow-up processing. We estimate directly Morrey's energy to avoid the difficulties by blowing up.

关键词： partial regularity potential Landau-Lifshitz system

partial oxidation of methane to syngas in a mixed-conducting oxygen permeable membrane reactor

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Chinese Science Bulletin 2000年第3期45卷 224-226页

作者： Hui Dong Guoxing Xiong Zongping Shao Shenglin Liu Weishen Yang Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Dalian 116023 Peoples R China

Mixed-conducting oxygen permeable membranes represent a class of novel ceramic membranes, which exhibit mixed oxygen ionic and electronic conductivities. At high temperatures, oxygen can permeate through the membrane from the high to low oxygen pressure side under an oxygen concentration gradient. Theoretically, the permselectivity of oxygen is 100%. Recently, anovel mixed-conducting membrane-Ba0.5Sr0.5Coo.8Feo.2O3-δ has been developed, which showsextremely high oxygen permeability and promising stability. Furthermore, the reactor made with such membranes was successfully applied to the partial oxidation of methane to syngas reaction using air as the oxygen source, which realized the coupling of the separation of oxygen from air and the partial oxidation of membrane reaction in one process. At 850℃, methane conversion > 88%, CO selectivity >97% and oxygen permeation rate of about 7.8 mL/(cm2 ·min) were obtained.

关键词： mixed-conducting oxygen permeable membrane perovskite membrane reactor partial oxidation of methane catalysis in membrane reactor.

Hamiltonian Representation of Higher Order partial Differential Equations with Boundary Energy Flows

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Journal of Applied Mathematics and Physics 2015年第11期3卷 1472-1490页

作者： Gou Nishida Department of Mechanical and Environmental Informatics Graduate School of Information Science and Engineering Tokyo Institute of Technology Tokyo Japan

This paper presents a system representation that can be applied to the description of the interaction between systems connected through common boundaries. The systems consist of partial differential equations that are first order with respect to time, but spatially higher order. The representation is derived from the instantaneous multisymplectic Hamiltonian formalism;therefore, it possesses the physical consistency with respect to energy. In the interconnection, particular pairs of control inputs and observing outputs, called port variables, defined on the boundaries are used. The port variables are systematically introduced from the representation.

关键词： Symplectic Structure Dirac Structure Hamiltonian Systems Passivity partial Differential Equations Nonlinear Systems

A Wavelet Approach for partial Occluded Object Recognition

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武汉理工大学学报 2006年第S1期28卷 32-39页

作者： Kah Bin Lim Geok Soon Hong Mechanical Engineering Department National University of SingaporeSingapone

A complete 2-D object recognition algorithm applicable for both standalone and partial occluded object is presented. The main contributions in our work are: we developed a scale and partial occlusion invariant boundary partition algorithm and a multiresolution feature extraction algorithm using wavelet. We also implemented a hierarchical matching strategy for feature matching to reduce computational load,but increase matching accuracy. Experiment result shows proposed recognition algorithm is robust to similarity transform and partial occlusion.

关键词： wavelet partial occlusion object recognition corner detection