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Investigation on Thermal Insulation and Mechanical Strength of Lightweight Aggregate Concrete and Porous Mortar in Cold Regions

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Journal of Renewable Materials 2022年第12期10卷 3167-3183页

作者： Jianan Wu ke xue Zhaowei Ding Lei Lang Kang Gu Xiaolin Li Mingli Zhang Desheng Li Ningbo City College of Vocational Technology NingboChina College of Water Conservancy and Hydropower Engineering Sichuan Agricultural UniversityYa’anChina State key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghaiChina College of Civil Engineering and Architecture Jiaxing UniversityJiaxingChina Department of Civil Engineering Lanzhou University of TechnologyLanzhouChina Department of Civil Engineering College of ScienceNanjing University of Science and TechnologyNanjingChina

Thermal insulation is an important indicator to evaluate the construction material in cold region *** we know,adding the industrial waste as lightweight aggregate or creating the pore inside the cement-based composite could make the texture loose,and the thermal insulating capacity of the material would be improved with this *** these methods,the industrial by-product and engineering waste could be cycled in an efficient ***,after service the fragmented cement composites paste could be used as aggregate in the thermal insulating concrete *** the porous texture is not favorable for the mechanical strength and long-term durability in a cold *** balance the above three requirements from two opposite directions,different processing methods were applied to create the thermal insulation concrete/***,the organic/inorganic lightweight aggregate,including the Expanded Polystyrene(EPS),Expanded Perlite(EP),and Ceramsite(CRMST)particles,were applied to create the Lightweight Aggregate Concrete(LWAC).As the comparative tests,the expanded Superabsorbent Polymer(SAP)hydrogel and Air-Entraining Agent(AEA)were also introduced to create the porous *** above concrete/mortar was tested in the normal state and under the Freeze-Thaw cycle to explore the engineering performance in cold *** the experimenting process,the thermal insulation,mechanical strength,and frost resistance of these cement-based composites were investigated,and an optimal thermal insulation concrete/mortar was determined.

关键词： Thermal insulation mechanical strength cement-based composite freeze-thaw cycle frost resistance

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医学生新时代医疗卫生职业精神培养——以江苏省血吸虫病防治研究所为例

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教育教学论坛 2024年第21期 165-168页

作者：柯雪丹周雯迪王玠卞荷娟江苏省血吸虫病防治研究所科教科江苏无锡214064

新时代医疗卫生职业精神的培养与弘扬,关系到医疗行业的高质量发展和健康中国的建设。医学生作为医务工作者的后备力量,从学生时期就接受思想政治教育和实践教育的有机结合教育。切实加强职业精神培养和提高职业道德素质,具有重要的现... 详细信息

新时代医疗卫生职业精神的培养与弘扬,关系到医疗行业的高质量发展和健康中国的建设。医学生作为医务工作者的后备力量,从学生时期就接受思想政治教育和实践教育的有机结合教育。切实加强职业精神培养和提高职业道德素质,具有重要的现实意义。江苏省血吸虫病防治研究所发挥卫生事业科研院所特色,深化医学生的思想政治教育,开展实践教育,加强新时代医疗卫生职业精神培养,为医学院校落实立德树人根本任务提供借鉴思路。

关键词：医学生新时代医疗卫生职业精神思想政治实践教育

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Krüppel-like Factor 13 Promotes HCC Progression by Transcriptional Regulation of HMGCS1-mediated Cholesterol Synthesis

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Journal of Clinical and Translational Hepatology 2022年第6期10卷 1125-1137页

作者： Chao-Chun Chen Xing-Ming Xie xue-ke Zhao Shi Zuo Hai-Yang Li Department of Clinical Medicine Guizhou Medical UniversityGuiyangGuizhouChina Department of Hepatobiliary Sur-gery The Affiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina Department of Infectious Diseases The Affiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina

Background and Aims:Krüppel-like factor(KLF)has a role in the occurrence,development and metabolism of *** aimed to explore the role and potential molecular mechanism of KLF13 in the growth and migration of liver cancer ***:The expression of KLF13 in hepa-tocellular carcinoma(HCC)tissues was higher than that in normal tissues according to analysis of The Cancer Genome Atlas(TCGA)*** plasmids were used for overexpression and plasmid knockdown of ***-time quantitative polymerase chain reaction(qPCR)and western blotting were used to detect mRNA and protein expression in HCC tissues and *** counting kit-8(CCK-8),colony formation,cell migration and invasion,and flow cytometry assays were used to assess the in vitro function of KLF13 in HCC *** effect of KLF13 on xenograft tumor growth in vivo was *** cholesterol content of HCC cells was determined by an indicator kit.A dual-luciferase reporter assay and chromatin immunoprecipitation sequencing(ChIP-seq)revealed the binding relationship between KLF13 and ***:The expression of KLF13 was upregu-lated in HCC tissues and TCGA ***13 knockdown inhibited the proliferation,migration and invasion of HepG2 and Huh7 cells and increased the apoptosis of Huh7 *** opposite effects were observed with the overexpression of KLF13 in SK-Hep1 and MHCC-97H *** overexpres-sion of KLF13 promoted the growth of HCC in nude mice and KLF13 transcription promoted the expression of HMGCS1 and the biosynthesis of ***13 knockdown inhibited cholesterol biosynthesis mediated by HMGCS1 and inhibited the growth and metastasis of HCC ***:KLF13 acted as a tumor promoter in HCC by positively regulating HMGCS1-mediated cholesterol biosynthesis.

关键词： Hepatocellular carcinoma KLF13 HMGCS1 Cholesterol

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Regulation of opticin on bioactivity of retinal vascular endothelial cells cultured in collagen

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International Journal of Ophthalmology(English edition) 2020年第8期13卷 1202-1209页

作者： Yue Xing xue-ke Li Si-Duo Lu Jin Ma State key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou 510000Guangdong ProvinceChina

AIM:To investigate the effects of collagen and opticin on the bioactivity of human retinal vascular endothelial cells(hR VECs),and explore its regulations by integrins and RhoA/ROCK1 signal ***:h RVECs were cultured in collagen and treated by opticin,and cell-based bioactivity assays of cell proliferation,migration,and adhesion were *** expression of integrinα2,integrinβ1,Rho A and ROCK1 were examined with real-time PCR and Western ***:Collagen could promote cell viability of proliferation and migration(all P<0.05),and enhance the m RNA expression of integrinα2,integrinβ1,Rho A and ROCK1(all P<0.05).Opticin could inhibit proliferation and migration ability of hR VECs cultured in collagen,and reduce the mR NA expression of integrinα2,integrinβ1,RhoA and ROCK1(all P<0.05).CONCLUSION:Collagen and opticin can affect bioactivity of hR VECs,which may be regulated byα2-,β1-integrins and RhoA/ROCK1 signal pathway.

关键词： opticin collagen retinal vascular endothelial cell integrin RhoA/ROCK1

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New Modified Jacobi Elliptic Function Expansion Method and Its Application to （3＋1）-Dimensional KP Equation

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Communications in Theoretical Physics 2006年第6期45卷 1063-1068页

作者： DOU Fu-Quan SUN Jian-An DUAN Wen-Shan SHI Yu-Ren Lü ke-Pu HONG xue-Ren College of Physics and Electronics Engineering Northwest Normal University Lanzhou 730070 China

With the aid of computerized symbolic computation, the new modified Jacobi elliptic function expansion method for constructing exact periodic solutions of nonlinear mathematical physics equation is presented by a new general ansatz. The proposed method is more powerful than most of the existing methods. By use of the method, we not only can successfully recover the previously known formal solutions but also can construct new and more general formal solutions for some nonlinear evolution equations. We choose the （3＋1）-dimensional Kadomtsev-Petviashvili equation to illustrate our method. As a result, twenty families of periodic solutions are obtained. Of course, more solitary wave solutions, shock wave solutions or triangular function formal solutions can be obtained at their limit condition.

关键词： MJEFE method KP equation periodic solutions solitary wave solutions

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基于Swin Transformer和CNN的汉字书法教学系统

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青岛大学学报（自然科学版） 2024年第1期37卷 45-51页

作者：林粤伟张通宋丹梁汇鑫薛克程青岛科技大学信息科学技术学院青岛266061 海信视像科技股份有限公司青岛266001 山东新华健康科技有限公司淄博255100

针对日益增长的汉字书法学习需求,将滑动窗口自注意力(Swin Transformer,ST)模型和卷积神经网络(Convolutional Neural Network,CNN)模型相结合,提出手写体汉字识别ST-CNN模型,进而开发了汉字书法教学系统。实测结果表明,ST-CNN模型识... 详细信息

针对日益增长的汉字书法学习需求,将滑动窗口自注意力(Swin Transformer,ST)模型和卷积神经网络(Convolutional Neural Network,CNN)模型相结合,提出手写体汉字识别ST-CNN模型,进而开发了汉字书法教学系统。实测结果表明,ST-CNN模型识别准确率约为91.6%,较传统的ST模型提升了约0.5个百分点,较传统的CNN模型与ST模型,在收敛速度上分别提升了约10和30个百分点,开发的汉字书法教学系统性能良好。

关键词：深度学习滑动窗口自注意力模型卷积神经网络手写体汉字识别

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Highly active double metal cyanide complexes: Effect of central metal and ligand on reaction of epoxide/CO2

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Chinese Chemical Letters 2007年第7期18卷 887-890页

作者： Xing Hong Zhang Shang Chen Xian Ming Wu xue ke Sun Fei Liu Guo Rong Qi Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China College of Chemistry and Chemical Engineering Jishou University Jishou 416000 China

Various novel double metal cyanide （DMC） catalysts were successfully prepared by modifying the central metal （M） and one of cyanide ion （CN-） in Zna[M（CN）b]c complex. Such modifications have significant impact on the catalytic efficiency as well as the polymer selectivity for the reaction of PO/CO2. Zn-Ni（Ⅱ） DMC is a potential catalyst for alternating copolymerization of PO/CO2,and DMC catalysts based on Zn3[Co（CN）5X]2 （X = Br^- and N3^-） exhibit moderate efficiency for the production of *** research presents the preliminary exploration of novel DMC complex via chemical modification of its central metal and ligand.

关键词： Double metal cyanide complexes Epoxide CO2 Polymerization

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Beta-blockers and 1-year clinical outcomes in hospitalized heart failure patients with atrial fibrillation

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Journal of Geriatric Cardiology 2021年第9期18卷 728-738页

作者： Fu-Wei XING Li-Hua ZHANG Hai-Bo ZHANG xue-ke BAI Dan-Li HU Xin ZHENG Jing LI National Clinical Research Center for Cardiovascular Diseases NHC Key Laboratory of Clinical Research for Cardiovascular MedicationsState Key Laboratory of Cardiovascular DiseaseFuwai HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeNational Center for Cardiovascular DiseasesBeijingChina

OBJECTIVE To assess the association between beta-blockers and 1-year clinical outcomes in heart failure(HF)patients with atrial fibrillation(AF),and further explore this association that differs by left ventricular ejection fraction(LVEF)*** We enrolled hospitalized HF patients with AF from China Patient-centered Evaluative Assessment of Cardiac Events Prospective Heart Failure *** proportional hazard regression models were employed to calculate hazard ratio of *** primary outcome was all-cause *** Among 1762 HF patients with AF(756 women[41.4%]),1041(56%)received beta-blockers at discharge and 1272(72.2%)had an LVEF>40%.During one year follow up,all-cause death occurred in 305(17.3%),cardiovascular death occurred in203 patients(11.5%),and rehospitalizations for HF occurred in 622 patients(35.2%).After adjusting for demographic characteristics,social economic status,smoking status,medical history,anthropometric characteristics,and medications used at discharge,the use of beta-blockers at discharge was not associated with all-cause death[hazard ratio(HR):0.86;95%Confidence Interval(CI):0.65-1.12;P=0.256],cardiovascular death(HR:0.76,95%CI:0.52-1.11;P=0.160),or the composite outcome of all-cause death and HF rehospitalization(HR:0.97,95%CI:0.82-1.14;P=0.687)in the entire *** were no significant interactions between use of beta-blockers at discharge and LVEF with respect to all-cause death,cardiovascular death,or composite *** the adjusted models,the use of beta-blockers at discharge was not associated with all-cause death,cardiovascular death,or composite outcome across the different levels of LVEF:reduced(kers at discharge was not associated with 1-year clinical outcomes,regardless of LVEF.

关键词： Beta-blockers and 1-year clinical outcomes in hospitalized heart failure patients with atrial fibrillation

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Reduced precision solution criteria for nonlinear model predictive control with the feasibility-perturbed sequential quadratic programming algorithm

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第11期12卷 919-931页

作者： Jiao-na WAN Zhi-jiang SHAO ke-xin WAN xue-yi FANG Zhi-qiang WANG Ji-xin QIAN State key Lab of Industrial Control Technology Institute of Industrial Control Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China

We propose a novel kind of termination criteria, reduced precision solution (RPS) criteria, for solving optimal control problems (OCPs) in nonlinear model predictive control (NMPC), which should be solved quickly for new inputs to be applied in time. Computational delay, which may destroy the closed-loop stability, usually arises while non-convex and nonlinear OCPs are solved with differential equations as the constraints. Traditional termination criteria of optimization algorithms usually involve slow convergence in the solution procedure and waste computing resources. Considering the practical demand of solution precision, RPS criteria are developed to obtain good approximate solutions with less computational cost. These include some indices to judge the degree of convergence during the optimization procedure and can stop iterating in a timely way when there is no apparent improvement of the solution. To guarantee the feasibility of iterate for the solution procedure to be terminated early, the feasibility- perturbed sequential quadratic programming (FP-SQP) algorithm is used. Simulations on the reference tracking performance of a continuously stirred tank reactor (CSTR) show that the RPS criteria efficiently reduce computation time and the adverse effect of computational delay on closed-loop stability.

关键词： Nonlinear model predictive control (NMPC) Computational delay Termination criteria Continuously stirred tankreactor (CSTR)

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二次辊压比例对负极极片特性影响

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金属功能材料 2024年第3期31卷 80-85页

作者：刘中奎张志远谷明海薛珂鲍远凯金寨国轩新能源有限公司安徽金寨237321

考察了石墨负极二次辊压中两次不同辊压比例对负极极片特性以及电池性能的影响。结果发现,二次辊压工艺的极片辊压厚度反弹率、剥离强度、烘烤厚度反弹率、电解液浸润厚度反弹率、满电厚度反弹率、电池首次效率、电池厚度均比一次辊压... 详细信息

考察了石墨负极二次辊压中两次不同辊压比例对负极极片特性以及电池性能的影响。结果发现,二次辊压工艺的极片辊压厚度反弹率、剥离强度、烘烤厚度反弹率、电解液浸润厚度反弹率、满电厚度反弹率、电池首次效率、电池厚度均比一次辊压工艺的略小,其中第1次辊压比例越大,第2次辊压比例越小,结果也逐渐变小。电池残液量结果相反,电池内阻影响因素较多,与辊压工艺关联较小。

关键词：锂电池石墨负极二次辊压辊压比例厚度反弹孔隙率

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