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Nonrelativistic mean-field description of the deformation of Λ hypernuclei

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Science China(Physics,Mechanics & Astronomy) 2009年第10期52卷 1548-1553页

作者： zhou xianrong CUI JiWei WEI Ning Department of Physics and Institute of Theoretical Physics and Astrophysics Xiamen UniversityXiamen 361005China

The deformations of light Λ hypernuclei are studied in an extended nonrelativistic deformed Skyrme-Hartree-Fock approach with realistic modern nucleonic Skyrme forces,pairing correlations,and a microscopical lambda-nucleon interaction derived from Brueckner-Hartree-Fock *** to the large effect of an additional Λ particle on nuclear deformation in the light soft nuclei within relativistic mean field method,this effect is much smaller in the nonrelativistic mean-field approximation.

关键词： deformation hypernuclei deformed Skyrme Hartree-Fock

Effect of time-odd fields on odd-even mass differences of semi-magic nuclei

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Science China(Physics,Mechanics & Astronomy) 2016年第5期59卷 83-92页

作者： Kun Yu xianrong zhou JiWei Cui H.Sagawa Department of Physics and Institute of Theoretical Physics and Astrophysics Xiamen University Department of Physics East China Normal University State Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Physics and Optoelectronic Engineering Xidian University RIKEN Nishina Center Center for Mathematics and Physics University of Aizu Aizu-Wakamatsu

The effect of time-odd fields of Skyrme interaction on neutron odd-even mass differences is studied in the framework of axially deformed Skyrme Hartree-Fock(DSHF)+BCS model. To this end, we take into account both the time-even and time-odd fields to calculate the one-neutron and two-neutron separation energies and pairing gaps of semi-magic Ca, Ni, and Sn isotopic chains. In the calculations, a surface-type pairing interaction(IS pairing) and an isospin dependent contact pairing interaction(IS+IV pairing)are adopted on top of Skyrme interactions SLy4, SLy6 and Sk M*, respectively. We find that the time-odd fields have in general small effects on pairing gaps, but achieve better agreement with experimental data using SLy4 and Sly6 interactions, *** is also shown that the calculations with IS+IV pairing reproduce the one-neutron separation energies of Sn isotopes better than those with the IS pairing interaction when the contributions of the time-odd fields are included.

关键词： odd-even staggering S1n S2n A3 and mean square deviations

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妇科病理学的发展与任务

中华病理学杂志 2022年第7期51卷 581-584页

作者：周先荣复旦大学附属妇产科医院病理科上海200011

妇科病理学形成于19世纪后期,从早期的探索开始,就极大地推动了妇科学的发展。在130多年的发展完善中,妇科病理工作者始终结合当时先进科学技术,和妇科学者密切合作,使得妇科病理学至今已经形成了一整套完整的科学体系。我国妇科病理学... 详细信息

妇科病理学形成于19世纪后期,从早期的探索开始,就极大地推动了妇科学的发展。在130多年的发展完善中,妇科病理工作者始终结合当时先进科学技术,和妇科学者密切合作,使得妇科病理学至今已经形成了一整套完整的科学体系。我国妇科病理学起步晚,不同医院差距大,面临着普及与提高的双重任务。未来,国内妇科病理学需要重点关注并解决以下问题:(1)不断提高女性下生殖道鳞状上皮内病变和宫颈原位腺癌的诊断准确率;(2)关注激素相关病变尤其是瘤样病变的正确诊断;(3)关注临床痛点,解决临床治疗不断的新需求;(4)积极使用分子生物学技术,探索符合中国国情的方案;(5)规范诊断术语及提供必需的预后参数。

关键词：妇科病理学历史培训诊断准确性

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子宫内膜不典型增生的病理学诊断与鉴别诊断

中华病理学杂志 2016年第5期45卷 289-292页

作者：周先荣复旦大学附属妇产科医院病理科上海200011

子宫内膜不典型增生（atypical hyperplasia）是依然用于上皮性肿瘤浸润前病变的少数诊断之一，在2014年WHO女性生殖器官肿瘤学分类中，其定义为“过度增生的子宫内膜腺体存在细胞异型性，但缺乏明确的浸润证据的各种情况”。

关键词：子宫内膜不典型增生鉴别诊断病理学诊断女性生殖器官肿瘤肿瘤浸润过度增生上皮性 WHO

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胎盘病理学检查的意义和基本原则

中华病理学杂志 2020年第8期49卷 779-781页

作者：周先荣复旦大学附属妇产科医院病理科上海200011

胎盘病理学检查对于判断围产儿死亡原因,促进围产和胎儿医学进步具有重要价值。胎盘病理学是外科病理学重要分支之一,但显然有别于外科病理学常用的诊断路径。胎盘病损以各种原因导致的母胎灌输不足、炎症和遗传异常等为主,功能性形态... 详细信息

胎盘病理学检查对于判断围产儿死亡原因,促进围产和胎儿医学进步具有重要价值。胎盘病理学是外科病理学重要分支之一,但显然有别于外科病理学常用的诊断路径。胎盘病损以各种原因导致的母胎灌输不足、炎症和遗传异常等为主,功能性形态改变更为常见,需要密切联系母体和胎儿/新生儿情况,才能给出合理的解释。遵循正确的胎盘病理诊断方法,结合现代影像学和遗传学取得的进步,将为胎盘病理学开启一个新时代。

关键词：外科病理学新生儿情况胎盘病理学围产儿死亡原因现代影像学胎儿医学形态改变诊断方法

Coarse-fine joint target parameter estimation method based on AN-RSC in OFDM passive radar

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Journal of Systems Engineering and Electronics 2024年第2期35卷 339-349页

作者： WANG Chujun WAN xianrong YI Jianxin CHENG Feng School of Electronic Information Wuhan UniversityWuhan 430072China

In this paper,we study the accuracy of delay-Doppler parameter estimation of targets in a passive radar using orthogonal frequency division multiplexing(OFDM)signal.A coarse-fine joint estimation method is proposed to achieve better estimation accuracy of target parameters without excessive computational ***,the modulation symbol domain(MSD)method is used to roughly estimate the delay and Doppler of ***,to obtain high-precision Doppler estimation,the atomic norm(AN)based on the multiple measurement vectors(MMV)model(MMV-AN)is used to manifest the signal sparsity in the continuous Doppler *** the same time,a reference signal compensation(RSC)method is presented to obtain highprecision delay *** results based on the OFDM signal show that the coarse-fine joint estimation method based on AN-RSC can obtain a more accurate estimation of target parameters compared with other *** addition,the proposed method also possesses computational advantages compared with the joint parameter estimation.

关键词： passive radar orthogonal frequency division multiplexing(OFDM)signal atomic norm(AN) parameter estimation

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我院2003～2005年抗结核药利用分析

中国药房 2007年第23期18卷 1783-1784页

作者：周先荣湖南衡阳市第三人民医院衡阳市421101

目的:了解我院抗结核药的应用状况及趋势。方法:采用销售金额及用药频度(DDDs)排序法,对我院2003～2005年抗结核药的应用情况进行统计、分析。结果:我院二线抗结核药销售金额及DDDs逐年上升,其中喹诺酮类抗结核药增幅最大。结论:结核病... 详细信息

目的:了解我院抗结核药的应用状况及趋势。方法:采用销售金额及用药频度(DDDs)排序法,对我院2003～2005年抗结核药的应用情况进行统计、分析。结果:我院二线抗结核药销售金额及DDDs逐年上升,其中喹诺酮类抗结核药增幅最大。结论:结核病患者应及时采用短程督导化疗,严格执行归口管理。

关键词：抗结核药用药频度短程督导化疗归口管理

Cr-catalyzed allylic C(sp^(3))–H addition to aldehydes enabled by photoinduced ligand-to-metal charge transfer

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Science China Chemistry 2024年第5期67卷 1589-1595页

作者： xianrong Zeng Feng-Hua Zhang Runchen Lai Xiaoyu Lin Zhaobin Wang Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of ChemistrySchool of Science and Research Center for Industries of the FutureWestlake UniversityHangzhou 310030China Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhou 310024China Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Instrumentation and Service Center for Molecular SciencesWestlake UniversityHangzhou 310024China

Photoinduced ligand-to-metal charge transfer(LMCT) has emerged as an effective strategy for synthesizing organic molecules in a sustainable manner. However, the majority of existing reports on selective C(sp^(3))–H bond functionalization via photoinduced LMCT focus on the use of late transition metals or rare-earth metals for radical additions or cross-couplings. In contrast, the utilization of photoinduced LMCT with 3d early transition metals poses a significant challenge. Herein, we describe an unprecedented approach to allylic C(sp^(3))–H addition to aldehydes, employing chromium(Cr) complexes as catalysts through visible-light-induced LMCT. By investigating the reaction pathway through various mechanistic studies, including radical trapping, kinetic isotope effect(KIE) analysis, and transient absorption spectroscopy, valuable insights have been gained. The proposed mechanism suggests the intermediacy of bromine radicals through homolysis of the Cr–Br bond. Notably, this protocol expands our understanding of the photochemical properties of earth-abundant Cr complexes.

关键词： Cr catalysis photoinduced ligand-to-metal charge transfer hydrogen-atom transfer carbonyl addition

Responses of Leaf Functional Traits of Torreya fargesii to the Altitudinal Variation

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Agricultural Science & Technology 2017年第11期18卷 2179-2184页

作者： Jin SHANG Bo JIANG Yonghong ZHENG Jianhua WANG xianrong zhou Jianhui LI School of Life Science and Biotechnology Yangtze Normal UniversityFuling 408100China Quzhou Academy of Agricultural Sciences Quzhou 324000China

[Objective] To reveal the leaf functional traits and adaptive strategy of Torreya fargesii at different altitude gradients.[Method] Leaves of T. fargesii were selected from the altitudes of 1 570, 1 700, 1 900, 2 125 and 2 360 m in Jiajinshan forest area of Sichuan Baoxing County, and the altitudes of 1 000, 1 200, 1 450, and 1 700 m in Hua'eshan Mountain Nature Reserve of Sichuan Wanyuan County as the research materials. Leaf blade traits such as leaf length, leaf width, leaf girth, leaf area and leaf dry weight were determined, and the influence of altitude on each index and correlation between characters were analyzed. [Result] For the leaves from both Baoxing County and Wanyuan County, leaf length, leaf width, leaf girth, leaf aspect ratio and leaf area decreased with the increase of altitude. There was no significant difference in the changes of leaf width, leaf girth and leaf aspect ratio among different altitudes(P>0.05), while the difference was significant in leaf length between high altitude and low attitude(P<0.05), and the difference was also significant in leaf area for the leaves from Baoxing County between high altitude and low altitude. However, there was no obvious correlation between leaf width and altitude, which could be considered as a relatively stable parameter. Leaf thickness and leaf dry weight increased first and then decreased with altitude,while the specific leaf area decreased first and then increased. In leaf length, leaf girth, leaf width and leaf area parameters, except for leaf width and leaf area for the T. fargesii from Wanyuan County, any two parameters reached significant or very significant positive correlation level(P<0.01). Leaf dry weight and leaf thickness had significant or very significant positive correlation, leaf dry weight and leaf area had a certain positive correlation but not significant. There existed no significant positive correlation between specific leaf area and leaf area, while specific leaf area was in negat

关键词： Torreya fargesii Franch. Altitude gradient Leaf traits Correlation