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重型机械 2012年第3期 99-102页

作者：卫凌云张营杰杜学斌唐照环梁舒婷金属挤压与锻造装备技术国家重点实验室陕西西安710032 中国重型机械研究院有限公司陕西西安710032

本文对液压机预应力框架的预紧方式进行了研究,分别详述了超压预紧、液压拉伸预紧和加热预紧三种方法,分析了预应力框架的机理,为生产实践提供了理论依据。

关键词：液压机超压液压拉伸疲劳强度加热预紧

Effects of Simulated Heat Wave and Ozone on High Fat Diet ApoE Deficient Mice

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Biomedical and Environmental Sciences 2018年第10期31卷 757-768页

作者： SONG Quan Quan NIN Jing Ping ZHANG shu Yu liang ting ting ZHOU Ji FENG Shan Shan Institute of Occupational and Environmental Health School of Public Health Lanzhou University Lanzhou 730000Gansu China Key Laboratory of Meteorology and Ecological Environment of Hebei Province Hebei Provincial Meteorological Bureau Shijiazhuang 050021 Hebei China Yangtze River Delta Environmental Weather Forecast Center Shanghai 200030 China Gansu University of Traditional Chinese Medicine Lanzhou 730000 Gansu China

Objective To discuss the cardiac toxicities of a heat waves and ozone exposure on cardiovascular diseases（CVDs） and explore a possible mechanism. Methods The incidence of ozone exposure combined with heat wave was simulated in the Shanghai Meteorological and Environmental Animal Exposure System（Shanghai-METAS）. A total of 64 Apo E-/-mice, matched by weight, were randomly divided into 8 groups and exposed to heat wave conditions or ozone. The levels of creatine kinase（CK）, D-lactate dehydrogenase（D-LDH）, intercellular adhesion molecule 1（sICAM-1）, tumor necrosis factor alpha（TNF-α）, nitric oxide（NO）, endothelin-1（ET-1）, D-dimer（D2 D）, plasminogen activator inhibitor-1（PAI-1） and blood lipid in plasma and heat shock protein-60（HSP60）, hypoxia inducible factor 1 alpha（HIF-1α）, interleukin-6（IL-6）, C-reactive protein（CRP）, superoxide dismutase（SOD）, and malondialdehyde（MDA） in hearts were measured after exposure. Results The levels of all indicators, except for SOD, increased with the ozone-only exposure. However, cardiac damage was most significant when the heat wave conditions were combined with severe ozone exposure. Moreover, the levels of CK, D-LDH, NO, PAI-1, sICAM-1, and TNF-α in plasma increased significantly（P 〈 0.05）, and the contents of HSP60, HIF-1α, CRP, and MDA in hearts increased considerably（P 〈 0.05）, but the activity of SOD decreased significantly. In addition, the levels of four blood lipid items remarkably increased（except the level of HDL-C which decreased significantly） with ozone exposure. Conclusion A short-term exposure to a heat wave and ozone causes severe toxic effects on the heart. Cardiac damage was most significant under combined heat wave and severe ozone exposure simulations.

关键词： Heat wave Ozone Damaging effects Cardiovascular disease Atherosclerosis mice Mechanism

精神活性物质所致精神障碍患者肝功能损害的相关因素分析

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临床精神医学杂志 2018年第3期28卷 183-185页

作者：刘益亮朱进才郭华贵谢雪珍梁淑婷黎勇航广东佛山市第三人民医院 528041

目的:探讨精神活性物质所致精神障碍患者肝功能损害的相关因素。方法:将64例精神活性物质所致精神障碍住院患者(研究组)治疗前和保肝降酶治疗4周后的肝功能各项指标与55名健康人(健康对照组)进行比较,并对肝功能损害影响因素进行相关分... 详细信息

目的:探讨精神活性物质所致精神障碍患者肝功能损害的相关因素。方法:将64例精神活性物质所致精神障碍住院患者(研究组)治疗前和保肝降酶治疗4周后的肝功能各项指标与55名健康人(健康对照组)进行比较,并对肝功能损害影响因素进行相关分析。结果:研究组治疗前肝功能各项指标高于健康对照组,其中谷丙转氨酶(ALT)、谷草转氨酶(AST)与对照组比较差异有统计学意义(t=4.063,t=3.044;P均<0.01);治疗后研究组肝功能各项指标均下降,与健康对照组比较差异无统计学意义。相关分析发现,ALT、AST与年龄(r=0.425,r=0.331)、首次住院年龄(r=0.268,r=0.262)、毒品使用年限(r=0.428,r=0.259)正相关(P<0.05或P<0.01);与受教育年限(r=-0.310,r=-0.371)负相关(P<0.05);ALT与住院次数(r=0.262)、总蛋白、球蛋白与住院次数(r=0.513,r=0.522)、毒品使用年限(r=0.296,r=0.419)正相关(P<0.05或P<0.01)。结论:精神活性物质所致精神障碍患者肝功能损害明显;年龄、文化程度、住院次数、毒品使用年限与肝功能损害显著相关。

关键词：精神活性物质精神障碍肝功能损害

A new oospecies of Shixingoolithus(Shixingoolithus qianshanensis ***.)from the Qianshan Basin,Anhui Province,East China

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Journal of Palaeogeography 2022年第4期11卷 629-639页

作者： Qing He Zhong-liang Chen shu-Kang Zhang Ze-Wen Gui Ya-ting Chen School of Resources and Environmental Engineering Anhui UniversityHefei 230601Anhui ProvinceChina State Key Laboratory of Paleobiology and Stratigraphy Nanjing Institute of Geology and PaleontologyChinese Academy of SciencesNanjing 210008Jiangsu ProvinceChina School of Resources and Environment Engineering Hefei University of TechnologyHefei 230009Anhui ProvinceChina Geological Survey of Anhui Province Hefei 230001Anhui ProvinceChina Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China

Here we describe two newly discovered dinosaur eggs from the Upper Cretaceous Chishan Formation in the Qianshan Basin,Anhui Province,East *** dinosaur eggs can be assigned to a new oospecies of Stalicoolithidae,Shixingoolithus qianshanensis,based on the following combined features:the larger size of eggs,the uniform eggshell microstructure in the radial section,the smaller height and the larger density of radial microstructures at the inner surface of the *** sections of *** show closely arranged columnar eggshell units forming relatively uniform and dense microstructure;some secondary eggshell units and numerous sub-circular radial microstructures appear separately in the middle and inner parts of the tangential sections,*** discovery of *** provides new fossil types of Stalicoolithidae and represents the first dinosaur relative record in the Qianshan Basin,which offer accurate paleontological evidence of Late Cretaceous-Early Paleocene stratigraphic classification in the Qianshan Basin,Anhui Province.

关键词： Dinosaur eggs Stalicoolithidae Shixingoolithus qianshanensis Upper Cretaceous Chishan Formation Qianshan Basin

Two-Dimensional Nonlinear Laser Spectra Calculations with Numerical Path Integral

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Chinese Physics Letters 2012年第8期29卷 122-126页

作者： liang Xian-ting Department of Physics and Institute of Modern Physics Ningbo UniversityNingbo 315211

Two-dimensional three-order nonlinear response functions and the laser spectra of the two-level Frenkel-exciton model,interacting with three short laser pulses in direction-k_(1)+k_(2)+k_(3),are calculated using the numerical path *** method is non-Markovian and the results show that the numerical simulation scheme provides a new pathway for theoretically investigating the multidimensional ultrafast laser spectra including the non-Markovian effects.

关键词： laser Frenkel Nonlinear

Superhydrophobic and corrosion-resistant siloxane-modified MgAl-LDHs coatings on magnesium alloy prepared under mild conditions

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 450-463页

作者： Wenxi Zhang Zhangzelong Zhuo Dan Xu liang Wu Zhihui Xie Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637002China College of Materials Science and Engineering/National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China

We have developed a superhydrophobic and corrosion-resistant LDH-W/PFDTMS composite coating on the surface of Mg *** composite comprised a tungstate-intercalated(LDH-W)underlayer that was grown at low temperature(relative to hydrothermal reaction conditions)under atmospheric pressure and an outer polysiloxane layer created from a solution containing perfluorodecyltrimethoxysilane(PFDTMS)using a simple immersion *** successful intercalation of tungstate into the LDH phase and the following formation of the polysiloxane layer were confirmed through X-ray diffraction(XRD),Fourier transform infrared(FTIR)spectroscopy,and X-ray photoelectron spectroscopy(XPS).The corrosion resistance of the LDH-W film,both before and after the PFDTMS modification,was evaluated using electrochemical impedance spectroscopy(EIS),Tafel curves,and immersion *** results showed that Mg coated with LDH-W/PFDTMS exhibited significantly enhanced corrosion protection compared to the unmodified LDHW film,with no apparent signs of corrosion after exposure to 3.5wt%NaCl solution for 15 ***,the LDH-W/PFDTMS coating demonstrated superior superhydrophobicity and self-cleaning properties against water and several common beverages,as confirmed by static contact angle and water-repellency *** results offer valuable insights into preparing superhydrophobic and corrosion-resistant LDH-based composite coatings on Mg alloy surfaces under relatively mild reaction conditions.

关键词： Mg alloy corrosion coating layered double hydroxide

Triassic integrative stratigraphy and timescale of China

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Science China Earth Sciences 2019年第1期62卷 189-222页

作者： Jinnan TONG Daoliang CHU Lei liang Wenchao shu Haijun SONG ting SONG Huyue SONG Yuyang WU State Key Laboratory of Biogeology and Environmental Geology and School of Earth Sciences China University of GeosciencesWuhan

The Triassic rocks are widespread in China, and both marine and terrestrial strata are well developed. The Triassic stratigraphic architecture of China is very complex in both spatial variation of the so-called "South Marine and North Continental", i.e. the southern areas of China occupied mostly by marine facies while the northern China by terrestrial facies during the Triassic Period, and temporal transition of the "Lower Marine and Upper Continental", i.e. the lower part of the Triassic System composed mainly of marine facies and the upper part of terrestrial strata especially in South China. Although the Global Stratotype Section and Point(GSSP) of the Permian-Triassic boundary is located in South China, the Triassic of China except for some marine Lower-Middle Triassic depositions shows significantly local characteristics and is hardly correlated with the global chronostratigraphic chart. Consequently, the Triassic of China contains not only the international research hotspots but also difficult points in stratigraphic study. This paper aims to present a brief review of the Triassic in China, including chronostratigraphy, biostratigraphy, magnetostratigraphy and chemostratigraphy, and summarize an integrated Triassic stratigraphic framework of China. Accordingly, a stratigraphic correlation is proposed for the lithostratigraphic sequences among the three tectono-paleogeographic stratigraphic regions. The comprehensive study indicates that ammonoids are the classic index fossils in Triassic biostratigraphy but conodonts are more advantageous in the study and definition of the Triassic chronostratigraphic boundaries. China still has the potential to optimize the GSSPs of the Induan-Olenekian boundary and Olenekian-Anisian boundary. The correlation of the Permian-Triassic boundary between marine and terrestrial facies might be achieved with the help of the Permian-Triassic "transitional bed" and its related biotic and environmental events in association with the b

关键词： Triassic Chronostratigraphy Biostratigraphy Magnetostratigraphy Chemostratigraphy Lithostratigraphy Stratigraphic correlation China

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半刚性连接框架结构的动力响应分析

工程抗震与加固改造 2007年第4期29卷 18-22页

作者：孙修礼王永明管毅梁书亭于经青岛农业大学山东青岛266109 青岛市公用建筑设计研究院有限公司山东青岛266071 青岛市城市规划设计研究院山东青岛266071 东南大学土木工程学院江苏南京210096

半刚性连接框架结构的动力性能和刚性连接框架结构不同。本文采用有限元分析软件ANSYS建立了刚接、半刚接和铰接三种连接形式的10层框架有限元模型,分析了三种连接形式框架的自振周期和在设计反应谱下的层间位移和变形曲线,并对框架结... 详细信息

半刚性连接框架结构的动力性能和刚性连接框架结构不同。本文采用有限元分析软件ANSYS建立了刚接、半刚接和铰接三种连接形式的10层框架有限元模型,分析了三种连接形式框架的自振周期和在设计反应谱下的层间位移和变形曲线,并对框架结构在两种不同地震动激励下的响应进行分析,得出结论:半刚性连接使结构低阶振型的自振周期显著增加,而对高阶振型的自振周期影响很小,可以忽略;在地震区采用刚接框架结构并不一定是最好的选择。最后给出了半刚性连接框架结构抗震设计的建议。

关键词：框架结构半刚性连接 ANSYS 动力响应

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FRP筋锚杆锚具的有限元参数化设计

江苏建筑 2013年第4期 89-91,96页

作者：郁步军蔡文华张继文梁书亭涂永明盐城工学院土木学院江苏盐城224003 东南大学土木工程学院江苏南京210096

在岩土工程中通常采用锚固技术来提高岩土体自身的强度和稳定性。钢锚杆几乎应用于土木建筑领域的各个方面,并且应用领域日益扩大,然而由于其防腐性能差、自重大、运输安装困难等缺陷在一定程度上制约了它的应用,尤其是钢锚杆的腐蚀问题... 详细信息

在岩土工程中通常采用锚固技术来提高岩土体自身的强度和稳定性。钢锚杆几乎应用于土木建筑领域的各个方面,并且应用领域日益扩大,然而由于其防腐性能差、自重大、运输安装困难等缺陷在一定程度上制约了它的应用,尤其是钢锚杆的腐蚀问题,不仅影响结构的耐久性,严重时还会出现重大工程事故。纤维增强塑料筋锚杆为锚固技术在岩土工程中的应用开辟了更为广阔的前景。针对施工中常用的钢套粘结式锚固系统,采用有限元软件ANSYS建立模型,分析了在正常使用状态下,锚固系统各组件之间界面上的应力分布,同时还对影响锚固性能的几个关键因素进行探讨,为此类锚固系统的设计、计算以及其它形式粘结型锚具的设计、分析、优化提供参考。

关键词： FRP筋锚杆锚具有限元

Synchronous concomitant pancreatic acinar cell carcin and gastric adenocarcinoma:A case report and review of literature

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World Journal of Clinical Cases 2021年第28期9卷 8509-8517页

作者： Tian Fang ting-ting liang Yi-Zhuo Wang Hai-Tao Wu shu-Han Liu Chang Wang Department of Oncology First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina

BACKGROUND Multiple primary malignant tumors are two or more malignancies in an individual without any relationship between the *** recent years,an increasing number of cases have been ***,concomitant primary gastric and pancreatic cancer reported a relatively small incidence,involving no pancreatic acinar cell carcinoma ***,we present the first case of concomitant pancreatic acinar cell carcinoma and gastric *** SUMMARY A 69-year-old male presented to our department with a history of vomiting,epigastric pain,and weight *** revealed space-occupying lesions in the stomach and the tail of the pancreas,*** patient underwent laparo-scopic radical gastrectomy and pancreatectomy *** pathologies of surgical specimens were completely different:The resected gastric specimen was moderate to poorly differentiated adenocarcinoma,whereas the pancreatic tumor was consistent with acinar cell *** patient was treated with six cycles of oxaliplatin and S-1 *** of March 2021,the patient was healthy without any recurrence or *** thoroughly reviewing the literature on simultaneous pancreatic and gastric cancers at home and abroad,we discussed the clinical characteristics of these rare synchronous double *** of the cases had undergone surgery and adjuvant chemotherapy,and all of the cases were pathologically confirmed by the postoperative *** Synchronous pancreatic acinar cells and gastric adenocarcinoma can occur and should be considered when tumors are found in these organs.

关键词： Synchronous concomitant cancers Pancreatic neoplasms Stomach neoplasms Pancreatic acinar cell carcinoma Surgical procedures Case report