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Chemical Potential Dependence of Vertices

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Communications in Theoretical Physics 2008年第11期50卷 1193-1196页

作者： JIANG Yu zhang yan-bin SUN Wei-Min ZONG Hong-Shi Department of Physics Nanjing University Nanjing 210093 China joint Center for Particle Nuclear Physics and Cosmology Nanjing 210093 China

Based on the rainbow-ladder approximation of the Dyson-Schwinger equations and the assumption of the analyticity of the fermion-boson vertex in the neighborhood of zero chemical potential （μ = 0） and neglecting the #-dependence of the dressed gluon propagator, we apply the method in [Phys. Rev. C 71 （2005） 015205] of studying the dressed quark propagator at finite chemical potential to prove that the general fermion-boson vertex at finite μ can also be obtained from the one at μ = 0 by a simple shift of variables. Using this result we extend the results of [Phys. Lett. B 420 （1998） 267] to the situation of finite chemical potential and show that under the approximations we have taken, the Gell-Mann Oakes-Renner relation also holds at finite chemical potential

关键词： vertices at finite chemical potential

Unquenched Effects and Quark Mass Dependence of Lattice Gluon Propagator in Infrared Region

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Communications in Theoretical Physics 2008年第7期50卷 125-128页

作者： zhang yan-bin PING Jia-Lun LV Xiao-Fu ZONG Hong-Shi Department of Physics Nanjing University Nanjing 210093 China Joint Center for Particle Nuclear Physics and Cosmology Nanjing 210093 China Department of Physics Nanjing Normal University Nanjing 210097 China Department of Physics Sichuan University Chengdu 610064 China

In this paper, the gluon propagator in Landau gauge has been studied on a lattice, including the quenched and the unquenched one. The small geometry size of lattice we use is 16^3 × 32, and the big one is 20^3 × 64. For the quenched approximation, we fit the numerical results and give a little different fitting values. We also obtain unquenched effects by comparing the gluon propagator resulting from the quenched and unquenched configurations, for both the two-flavor and three-flavor cases. For the unquenched configurations, an obvious quark mass dependence has not been found in the small quark mass case, but is found in the three-flavor case when the quark mass is big.

关键词： lattice gluon propagator quenching effect mass dependence infrared region

Treatment of early-onset scoliosis: techniques, indications, and complications

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Chinese Medical Journal 2020年第3期133卷 351-357页

作者： yan-bin zhang Jian-Guo zhang Department of Education Beijing Jishuitan Hospital4th Clinical Medical College of Peking UniversityBeijing 100035China Department of Orthopedics Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China.

The treatments for early-onset scoliosis(EOS)remain great challenges for spine *** study aimed to comprehensively review the treatments for EOS,especially the advancements made in the last *** studies on EOS were retrieved through a search on PubMed,UpToDate,the Web of Science Core Collection and Scopus were *** most pertinent information related to the current treatments for EOS was *** foci of treatments for EOS have included creating a well-developed thoracic cavity,improving lung volume,and improving pulmonary *** treatments include bracing,casting,halo-gravity traction,and *** casting is the most effective conservative treatment for *** treatments mainly include growth-friendly techniques,which are generally classified into three types according to the amount of correction force applied:distraction-based,compression-based,and *** distraction-based systems include traditional or conventional growing rods,magnetically controlled growing rods,and vertical expandable prosthesis titanium *** compression-based systems include vertebral body stapling and *** growth-guided systems include the Shilla system and modern Luque *** addition,some newer techniques have emerged in recent years,such as posterior dynamic deformity correction(ApiFix).For EOS patients presenting with sharp deformities in a long,congenital spinal deformity,a hybrid technique,one-stage posterior osteotomy with short segmental fusion and dual growing rods,may be a good *** resection is the gold standard for congenital scoliosis caused by single *** the patient’s growth potential is preserved in growth-friendly surgeries,a high complication rate should be expected,as well as a prolonged treatment duration and additional *** about EOS and its treatment options is rapidly *** treatments have specific *** curve

关键词： Early-onset scoliosis Techniques Conservative treament Hemivertebra resection Fusionless Growth-friendly

Study on the Quality of NILs of Wheat cv. Longfumai 3 Possessing HMW-GS Null and 1 Subunits

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Agricultural Sciences in China 2008年第2期7卷 140-147页

作者： zhang Li-li zhang yan-bin SONG Qing-jie ZHAO Hai-bin YU Hai-yang zhang Chun-liXINWen-li2 and XIAO Zhi-min2 XINWen-li XIAO Zhi-min College of Life and Environment Science Harbin Normal University Harbin 150025 P.R.China Crop Breeding Institute Heilongjiang Academy of Agricultural Sciences Harbin 150086 P.R.China

To determine the genetic differences between high molecular weigh glutenin subunits （HMW-GS） null and 1. HMW-GS 1 was introduced into Longfumai 3 （N, 7＋8, 5＋10） by 5 consecutive backcrosses with biochemical marker assisted selection. The near isogenic lines （NILs） of HMW-GS null and 1 were obtained and planted in the experimental field of Crop Breeding Institute of Heilongjiang Academy of Agricultural Science in 2004 and 2005. The field experiments were designed using the method of two-line contrast arrangement with four replicates. The result of two years experiment showed that the statistic differences of quality parameters between Longfumai 3 with subunit 1 and with null were not significant in flour protein content, dry gluten content, and water absorption. However the gluten index,＇ Zeleny sedimentation, the ratio of sedimentation/dry gluten, the development time, stability, and the breakdown time in the NIL with 1 subunit were increased by 5.8% （P〈0.01）, 9.3% （P〈0.01）, 8.6% （P=0.01）, 127.3% （P〈0.01）, 79.2% （P〈0.01）, and 53.6% （P〈0.01）, and the ratio of wet gluten/dry gluten and the degree of softening were decreased by 1.7% （P = 0.05） and 16.5% （P = 0.13）, respectively. The impact of the HMW-GS 1 on the gluten strength was highly positive in NILs containing HMW-GS 5 ＋ 10, suggesting that HMW-GS 1 can be an indispensable subunit for breeding strong gluten wheat.

关键词： wheat quality gluten near-isogenic lines (NILs)

Microstructure and tensile creep resistance of Mg-5.5%Zn-(0.7%, 1.5%, 3.5%, 7.5%)Y alloys

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Journal of Central South University 2015年第11期22卷 4112-4122页

作者：陈刚张艳斌夏伟军陈鼎 College of Materials Science and Engineering Hunan University

The tensile creep resistance of Mg-5.5%Zn-(0.7%, 1.5%, 3.5%, 7.5%)Y(mass fraction, %) gravity-casting alloys was investigated systematically. The corresponding physical models were established for analyzing the microstructure evolution and creep mechanism. The results show that four second phases are found in Mg-5.5%Zn-(0.7%, 1.5%, 3.5%, 7.5%)Y alloys, including Mg3 Zn Y, Mg3Zn6 Y, Mg3Zn3Y2 and Mg7Zn3, where the rare earth rich phase(Mg3Zn Y, Mg3Zn6 Y, Mg3Zn3Y2) with high melting point can more effectively improve the creep resistance properties of alloys than Mg7Zn3. With the increasing of Y content, the creep resistance of alloys is improved correspondingly. The alloys with(1.5%, 3.5%)Y addition exhibit high creep resistance at temperatures from 175 °C to 200 °C and load from 55 MPa to 70 MPa. The 7.5%Y added alloy presents excellent creep resistance even at 275 °C and 55 MPa. The second phase which shows discontinuous distribution at the grain boundary of(0.7%, 1.5%, 3.5%)Y added alloys has preferred orientation and clogs in triple junctions of grain boundary. Simultaneously, the arrangement of second phase particles along tensile direction and the formation of denuded zones are observed during the creep process. Moreover, the crack initiates in these areas and propagates along grain boundary. Compared with discontinuous second phase, the continuous skeleton-like second phase of 7.5%Y added alloy at grain boundary has a better effect on improving the creep resistance properties of alloys.

关键词： creep resistance Mg-Zn-Y alloy clustering phases c

基于非负矩阵分解算法的工程陶瓷磨削表面损伤检测

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光学精密工程 2012年第11期20卷 2459-2464页

作者：林滨张彦斌陈善功天津大学先进陶瓷与加工技术教育部重点实验室天津300072

考虑表面损伤检测在工程陶瓷表面质量评价中的重要作用,首次把非负矩阵分解(NMF)图像重构算法引入工程陶瓷磨削表面损伤检测中,并进行了理论分析与实例检测。首先,将输入图像数据集从原始数据空间降维到一个低维NMF空间,利用本文提出的... 详细信息

考虑表面损伤检测在工程陶瓷表面质量评价中的重要作用,首次把非负矩阵分解(NMF)图像重构算法引入工程陶瓷磨削表面损伤检测中,并进行了理论分析与实例检测。首先,将输入图像数据集从原始数据空间降维到一个低维NMF空间,利用本文提出的图像重构相对误差0.1监督规则,确定子空间基r值。然后,利用两个低维非负矩阵进行图像重构,获取磨削纹理背景图像,并通过图像减法去除磨削纹理。最后,利用Canny边缘检测算法提取工程陶瓷磨削表面损伤图像。实验结果表明,该方法能够准确提取表面损伤并计算磨削损伤率评价参数。

关键词：工程陶瓷磨削纹理表面检测非负矩阵分解

基于退化模拟及参数变化特性的动态颗粒图像检测方法

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计量学报 2012年第3期33卷 198-202页

作者：张艳彬南京邮电大学图像处理与图像通信实验室江苏南京210003

介绍了油液颗粒动态检测系统的发展现状，讨论了动态颗粒图像的检测问题。在分析动态颗粒图像退化原理的基础上，依据系统实验参数对图谱库中的颗粒图像进行了退化模拟，分析和解决了退化图像中颗粒目标提取的问题，研究了图像的各类参... 详细信息

介绍了油液颗粒动态检测系统的发展现状，讨论了动态颗粒图像的检测问题。在分析动态颗粒图像退化原理的基础上，依据系统实验参数对图谱库中的颗粒图像进行了退化模拟，分析和解决了退化图像中颗粒目标提取的问题，研究了图像的各类参数退化前后的变化特性，最终选取了对图像退化具有较好不变性的参数形成了油液动态颗粒图像的检测体系，相比传统系统实现了对颗粒更为详细的检测和分类。

关键词：计量学动态颗粒检测图像退化模拟退化不变性

Investigation of long-term implantation of BuMA stent in a porcine coronary model

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Chinese Medical Journal 2012年第22期125卷 4083-4087页

作者： CHEN Ming WANG Xin-gang ZHENG Bo PENG Hong-yu zhang Xiao-yan zhang bin HUO Yong Peking Univ Hosp 1 Dept Cardiol Beijing 100034 Peoples R China Beijing Anzhen Hosp Dept Cardiol Beijing 100029 Peoples R China Peking Univ Dept Cardiol Shougang Hosp Beijing 100144 Peoples R China

Background Stent-based delivery of sirolimus has been shown to reduce neointimal hyperplasia significantly. However, the long-term effect of the polymer is thought to initiate and sustain an inflammatory response and contribute to the occurrence of late complications. Our study aimed to evaluate the efficacy and safety of the BuMA biodegradable drug-coated sirolimus-eluting stent （BSES） for inhibiting neointimal hyperplasia in a porcine coronary model. Methods Four types of stents were implanted at random in different coronary arteries of the same pig： BSES （n=24）, bare metal stent （BMS）（n=24）, biodegradable polymer coated stent without drug （PCS）（n=24） and only poly （n-butyl methacrylate） base layer coated stent （EGS）（n=23）. In total, 26 animals underwent successful random placement of 95 oversized stents in the coronary arteries. Coronary angiography was performed after 28 days, 90 days and 240 days of stent implantation. After 14 days, 28 days, 90 days and 240 days, 6 animals at each timepoint were sacrificed for histomorphologic analysis. Results The 28-day, 90-day and 240-day results of quantitative coronary angiography （QCA） showed reduction in luminal loss （LL） in the BSES group when compared with the BMS group; （0.20±0.35） mm vs. （0.82±0.51） mm （P=-0.035）, （0.20±0.30） mm vs. （0.93±0.51） mm （P=-0.013）, and （0.18±0.16） mm vs. （0.19±0.24） mm （P=0.889）, respectively. By 28-day, 90-day and 240-day histomorphomeric analysis results, there was also a corresponding significant reduction in neointimal tissue proliferation with similar injury scores of BSES compared with the BMS control; average neointimal area （0.90±0.49） mm2 vs. （2.16±1.29） mm2 （P=0.049）, （1.53±0.84） mm2 vs. （3.41±1.55） mm2 （P=-0.026）, and （2.43±0.95） mm2 vs. （3.12±1.16） mm2 （P=0.228）, respectively. High magnification histomorphologic examination revealed similar inflammation scores and endothelialization scores in both the BSES and BMS groups. Conclusions The BuMA biodegradable drug-coated sirol

关键词： biodegradable polymer electro-grafting base layer drug-eluting stent porcine coronary model

Metal nanoparticles decorated CoFe-(oxy)hydroxysulfides nanosheets fabricated by a general strategy for electrocatalytic water splitting

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Journal of Energy Chemistry 2025年第1期100卷 26-38页

作者： Xiaodong yang Haochen Shen Xiaoming Xiao Zhichao Li Qi Zhou Wei yang bin Jiang Yongli Sun Luhong zhang Zhenhua yan School of Chemical Engineering and Technology Tianjin University Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University

This study presents a novel method to fabricate metal-decorated,sulfur-doped layered double hydroxides （M/SLDH） through spontaneous redox and sulfurization *** developed Ag/SLDH and Pt/SLDH catalysts with abundant heterogeneous interfaces and hierarchical nanostructures demonstrated outstanding oxygen evolution reaction （OER） and hydrogen evolution reaction （HER） performance,achieving low overpotentials of 212 and 35 mV at 10 mA cm-2in 1 M KOH,*** both anode and cathode in water splitting,they required only 1.47 V to reach 10 mA cm-2and exhibited high structural robustness,maintaining stability at 1000 mA cm-2for 300 ***-situ Raman analysis revealed that the synergistic effects of metal nanoparticles and S doping significantly promote the transformation into the S-Co1-xFexOOH layer,which serves as the active phase for water ***,ultraviolet photoelectron spectroscopy （UPS） and density functional theory （DFT） analyses indicated that incorporating metal nanoparticles and S doping increase electron density near the Fermi level and reduce reaction energy barriers,thus enhancing intrinsic OER and HER *** study provides a scalable strategy for synthesizing high-performance electrocatalysts for water splitting,with promising potential for broader applications.

关键词： Ultraviolet photoelectron spectroscopy