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Chinese Journal of Structural Chemistry 2006年第6期25卷 747-751页

作者： WANG Jian-Ge DU Qiao-yun li peng-yun Department of Chemistry Luoyang Normal University Luoyang 471022 China

A novel ternary complex of [NiL1L2·2H2O]·NO3·H2O （L1 = 2-hydroxyl-1,10-phenanthroline （HOphen）, L2 = 2-hydroxynicotinic acid （H2nicO）） was synthesized, and its crystal structure was determined by X-ray diffraction and further characterized by infrared and elementary analysis. The title complex （C18H18NiN4O10, Mr = 509.07） belongs to the triclinic system, space group P1^- with a = 712490（7）, b = 11.0164（10）, c = 13.3864（13）A, α = 91.6040（10）,β= 98.8620（10）, γ= 107.1140（10）°, V= 1006.43（17）A^3, Z = 2, Dc = 1.680 g/cm^3,μ= 1.032 mm^-1, F（000） = 524, the final R = 0.0461 and wR= 0.1238. In the complex, the Ni（H） ion is six-coordinated to assume a distorted octahedral geometry, and a 3D supramolecular network comes into being via weak intermolecular interactions of X-O--.H （X = N, O）.

关键词： 2-hydroxyl-1,10-phenanthroline 2-hydroxynicotinic acid nickel complex crystal structure

Evaluation of the stability of vegetated slopes according to layout and temporal changes

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Journal of Mountain Science 2021年第1期18卷 275-290页

作者： li yun-peng HU Chao JIAN li ZHAO Ran li Chen China Academy of Transportation Sciences Beijing 100029China. Qilu Transportation Development Group Jinan 250101China

Vegetation in slopes can effectively improve slope ***,it is difficult to estimate the effects of vegetation on slope stability because of variations in plant species and environmental ***,influences of plant growth on slope stability change with time,resulting in changes in the safety *** study was conducted to evaluate the stability of vegetated slopes with time and investigate the effects of different layouts of plant species on slope ***,we used a plant growth model and slope stability analysis to build an evaluation *** accomplish this,one species of tree,shrub and grass was chosen to set six layout patterns.A slope with no vegetation served as a *** safety factors of the seven slopes were then calculated using the developed evaluation model and differences in the safety factors of slopes were compared and *** slope vegetated with Platycladus orientalis reached the most stable state at the age of 60 *** slope(Vitex negundo)had the maximum safety factor after 20 ***,the safety factor of vegetated slopes increased from 12.1%to 49.6% compared to the slope with no *** wind force was considered,the safety factor value of the slope changed from 3.5%to 43.5%.Vegetation mixtures of trees and grasses resulted in the best slope *** grasses on slopes can improve slope stability of trees to a greater degree than that of slopes with shrubs in the early stage of growth.

关键词： Plant growth model Vegetated slope Slope stability Safety factor

Bilateral liver resection for bilateral intrahepatic stones

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World Journal of Gastroenterology 2009年第29期15卷 3660-3663页

作者： Shao-Qiang li li-Jian liang yun-peng Hua Bao-Gang peng Dong Chen Shun-Jun Fu Department of Hepatobiliary Surgery the First Affiliated Hospital Sun Yat-sen UniversityGuangzhou 510080 Guangdong Province China

AIM: To evaluate the shortand long-term outcomes of bilateral liver resection for bilateral intrahepatic stones. METHODS: We reviewed retrospectively 101 consecutive patients with bilateral intrahepatic stones who underwent bilateral liver resection in the past 10 years. The shortand long-term outcomes of the patients were analyzed. The Cox proportional hazards model was used to identify the risk factors related to stone recurrence. RESULTS: There was no surgical mortality in this group of patients. The surgical morbidity was 28.7%. Stone clearance rate after hepatectomy was 84.2% and final clearance rate was 95.0% following postoperative choledochoscopic lithotripsy. The stone recurrence rate was 7.9% and the occurrence of postoperative cholangitis was 6.5% in a median follow-up period of 54 mo. The Cox proportional hazards model indicated that liver resection range, less than the range of stone distribution (P = 0.015, OR = 2.152) was an independent risk factor linked to stone recurrence. CONCLUSION: Bilateral liver resection is safe and its shortand long-term outcomes are satisfactory for bilateral intrahepatic stones.

关键词： Intrahepatic stone Hepatectomy Riskfactor Outcome Bilateral

基于柔性苯二乙酸CM6@Zn-MOF纳米材料的构筑和光电性能研究

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化学试剂 2025年第1期47卷 26-32页

作者：李鹏云张军孙朋涛张钢强马雅菲张美丽新疆宣力环保能源股份有限公司新疆维吾尔自治区哈密963000 延安大学化学与化工学院陕西延安716000

金属有机框架(Metal-organic frameworks,简称MOFs)作为有效能量转移的供体,在人工光采集材料领域中已引起许多专家的关注。特别是二维MOFs纳米片,因每个活性位点暴露在外易靠近受体,可以有效地将内部能量转移给外部受体,具有更为非凡... 详细信息

金属有机框架(Metal-organic frameworks,简称MOFs)作为有效能量转移的供体,在人工光采集材料领域中已引起许多专家的关注。特别是二维MOFs纳米片,因每个活性位点暴露在外易靠近受体,可以有效地将内部能量转移给外部受体,具有更为非凡的光电性能。通过选用柔性的1,2-苯二乙酸(H_(2)opda)和刚性的3,5-二(三氮唑)吡啶(btyp)作为有机配体,合成了一种新型的二维配位聚合物[Zn_(3)(btyp)_(2)(opda)_(3)(H_(2)O)_(3)]·(btyp)(H_(2)O)_(3)(Zn-MOF),晶体属于三斜晶系、P-1空间群。在该晶体结构中,反式opda配体的2个羧基均以双齿螯合模式与Zn(Ⅱ)离子配位,形成一维无限链;btyp配体桥链支撑相邻一维链,构成二维网面;通过opda羧基O与结晶H_(2)O之间多个O—H…O的相互作用形成三维超分子网络结构。Zn-MOF且具有完整的循环伏安曲线(还原、氧化电位分别为-0.22、0.05 V),良好的扫描速率。使用超声粉碎法将Zn-MOF层状结构剥离形成二维纳米片,再与香豆素6(CM6)掺杂形成CM6@Zn-MOF纳米材料,荧光从蓝光向绿光移动,将光收集范围从紫外光扩展到可见光,加之良好的电化学循环伏安性能(还原、氧化电位分别为-0.21、0.08 V),有望成为光电应用新材料。

关键词：水热合成苯二乙酸香豆素6 晶体结构掺杂材料光电性能

Two-stent strategy for renal artery stenosis with bifurcation lesion

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第8期11卷 561-567页

作者： Hong-bing YAN Bin ZHENG Zheng WU Jian WANG Han-jun ZHAO li SONG yun-peng CHI Department of Cardiology Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

Renal artery stenosis(RAS) with a bifurcation lesion is a challenge for interventional *** aim of this study is to summarize our experience in RAS with a bifurcation *** patients with RAS involving bifurcation lesion are *** cases 1 to 3,a single-stent strategy was first ***,these three patients were converted to a two-stent strategy for bailout stent implantation in the side *** cases 4 and 5,a simultaneous kissing stent technique was *** showed that the reference vascular diameter of the main branch was much larger than those of the side *** obvious residual stenosis existed in cases 1 to 3 after stent implantation,no obvious residual stenosis was seen in cases 4 and *** artery duplex sonography was performed in cases 1 through 5 at 6,7,7,8,and 6 months,respectively,after the *** evidence of restenosis or occlusion was *** conclusion,stent implantation with the simultaneous kissing stent technique may result in more simple and more satisfactory immediate angiographic results.

关键词： Peripheral atherosclerotic artery disease Angioplasty Stents Renal artery stenosis

Long-term outcome and prognostic factors of intrahepatic cholangiocarcinoma

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Chinese Medical Journal 2009年第19期122卷 2286-2291页

作者： li Shao-qiang liANG li-jian HUA yun-peng peng Bao-gang HE Qiang LU Ming-de CHEN Dong Department of Hepatobiliary Surgery the First Affiliated Hospital Sun Yat-sen University Guangzhou Guangdong 510080 China

Background The management of intrahepatic cholangiocarcinoma （ICC） remains a challenge due to poor prognosis. The aim of this study was to summarize the surgical management experience in recent 10 years and to identify the influencing factors related to outcome of patients with ICC in a single hepatobiliary center. Methods From January 1995 to June 2005, 136 patients with ICC undergoing surgery were reviewed retrospectively. Survival rates of patients were calculated using the Kaplan-Meier method and compared by using the log-rank test. The prognostic factors were identified by the Cox regression model. Results Seventy-nine of 136 patients underwent resection, and 65 of 79 patients were curative （R0）. The surgical mortality was 2.2%. The 1-, 3- and 5-year survival rates of patients undergoing R0 resection were 72.1%, 35.6% and 20.1% respectively, which were significantly longer than those who underwent palliative resection and exploration, respectively （P 〈0.01）. At stage IV of the disease, 10 patients who underwent aggressive curative resection achieved a better median survival than those （n=12） without resection （14 months vs 3 months, P 〈0.001）. The independent prognostic factors of the whole group were TNM stage （OR, 2.013, P=0.008） and curative resection （OR, 2.957, P=0.003）. Higher TNM stage （OR, 1.894, P=0.004） and lymph node metastasis （OR, 4.248, P=0.005） linked to poor prognosis after R0 resection. For patients without lymph node metastasis, the median survival of those who underwent regional lymphadenectomy was comparable with those who did not （18 months vs 22 months, P=0.817）. Conclusions R0 resection is mandatory for ICC patient to achieve long-term survival. Aggressive resection benefits for selected patients with local advanced disease. Higher TNM stage and lymph node metastasis were poor prognostic factors for ICC patients after R0 resection.

关键词： cholangiocarcinoma intrahepatic prognosis

Control of Corner Separation for a linear Compressor Cascade via Bionic Slanting Riblets at the Endwall

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Journal of Thermal Science 2025年第1期34卷 129-144页

作者： ZHANG peng li Yonghong CHENG Rixin Key Laboratory of Civil Aircraft Airworthiness Technology Civil Aviation University of China College of Aeronautical Engineering Civil Aviation University of China

A new passive control approach,utilizing bionic slanting riblets,is employed to mitigate the flow close to the blade endwall in a linear cascade,and its effectiveness and mechanism in controlling corner separation are investigated through numerical *** slanting riblets are positioned at the endwall upstream of the cascade channel,and the influence of riblet height,yaw angle and relative position on the control of corner separation is *** findings indicate that the application of slanting riblets can efficiently counteract corner separation across the stable operational ***,the introduction of riblets with a height of merely 0.1 times the boundary layer thickness results in a significant reduction in total pressure loss by up to 14.53%,while simultaneously enhancing the static pressure coefficient by 21.74%.Flow analysis reveals that minute vortices produced within the riblet channels tend to coalesce,forming a potent large-scale vortex near the boundary layer's base *** phenomenon results in reduced additional losses compared to conventional vortex ***,the induced vortex promotes enhanced mixing between the mainstream flow and boundary layer,inhibiting the lateral displacement of low-energy fluids within the endwall boundary ***,this delays the onset of separation vortex formation and eliminates vortex rings in the corner region,ultimately enhancing the aerodynamic efficiency of the cascade.

关键词： additional losses compressor cascade corner separation slanting riblets vortex generator

Sex-dependent alterations in extracellular vesicles linking chronic spinal cord injury to brain neuroinflammation and neurodegeneration

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Neural Regeneration Research 2025年第2期20卷 483-484页

作者： yun li Junfang Wu Department of Anesthesiology&Shock Trauma and Anesthesiology Research(STAR)CenterUniversity of Maryland School of MedicineBaltimoreMDUSA

Traumatic spinal cord injury(SCI)is a devastating exogenous injury with long-lasting consequences and a leading cause of death and disability *** in assistive technology,rehabilitative interventions,and the ability to identify and intervene in secondary conditions have significantly increased the long-term survival rate of SCI patients,with some people even living well into their seventh or eighth *** survival changes have led neurotrauma researchers to examine how SCI interacts with brain *** health and epidemiological data showed that patients with long-term SCI can have a lower life expectancy and quality of life,along with a higher risk of comorbidities and complications.

关键词： alterations inflammation injury

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： peng li Meifeng Cai Shengjun Miao Yuan li Yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

从“工作室”到“舞台”——电子音乐的表演形式及特征

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中央音乐学院学报 2011年第1期 105-111,134页

作者：李鹏云武汉音乐学院作曲系

作为现代音乐分支的电子音乐,随着创作观念和技术手段的不断进步,其表演形式经历了从单一模式逐渐向多元模式的过渡:早期的电子音乐基本是以"音箱-听众"为主的单一表演形式,后来,逐渐加入了"演奏(唱)"、"舞蹈"、"图像(形)"、"灯光"、"... 详细信息

作为现代音乐分支的电子音乐,随着创作观念和技术手段的不断进步,其表演形式经历了从单一模式逐渐向多元模式的过渡:早期的电子音乐基本是以"音箱-听众"为主的单一表演形式,后来,逐渐加入了"演奏(唱)"、"舞蹈"、"图像(形)"、"灯光"、"动作传感"、"装置"、"实时处理"、"实时网络传输"等元素,形成了现阶段的多元表演形式。

关键词：电子音乐电子音乐表演形式计算机音乐互动音乐