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玄武岩纤维对老化沥青混合料路用性能的影响

材料导报 2016年第2期30卷 118-122页

作者：傅珍黄振马峰长安大学材料科学与工程学院西安710064 长安大学公路学院西安710064

为研究玄武岩纤维对老化沥青混合料路用性能的影响,通过车辙试验、低温弯曲小梁试验、浸水马歇尔试验和冻融劈裂试验研究了玄武岩纤维对沥青混合料抗老化性能的作用。试验结果表明:虽然玄武岩纤维沥青混合料的动稳定度随老化时间增加,... 详细信息

为研究玄武岩纤维对老化沥青混合料路用性能的影响,通过车辙试验、低温弯曲小梁试验、浸水马歇尔试验和冻融劈裂试验研究了玄武岩纤维对沥青混合料抗老化性能的作用。试验结果表明:虽然玄武岩纤维沥青混合料的动稳定度随老化时间增加,但相对于普通沥青混合料而言,其增加的幅度减缓,提出采用相对变形率作为老化性能评价指标;玄武岩纤维延缓了沥青混合料老化性能的衰变,使得老化后的混合料低温抗裂性改善;经短期老化和长期老化后玄武岩纤维沥青混合料水稳定性能均优于普通沥青混合料,且玄武岩纤维显著降低了长期老化试件的未冻融劈裂强度,因此在应用中应适当增加碾压次数。

关键词：道路工程玄武岩纤维沥青混合料老化路用性能

Fabrication of multi-shell coated silicon nanoparticles via in-situ electroless deposition as high performance anodes for lithium ion batteries

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Journal of Energy Chemistry 2020年第9期29卷 160-168,I0005页

作者： Wen-feng Ren Jun-Tao Li Shao-Jian Zhang Ai-Ling Lin You-Hu Chen zhen-Guang Gao Yao Zhou Li Deng Ling huang Shi-Gang Sun State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM(Collaborative Innovation Center of Chemistry for Energy Materials)College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina College of Energy Xiamen UniversityXiamen 361005FujianChina

Si-based materials have been extensively studied because of their high theoretical capacity,low working potential,and abundant reserves,but serious initial irreversible capacity loss and poor cyclic performance resulting from large volume change of Si during lithiation and delithiation processes restrict their widespread ***,we report the preparation of multi-shell coated Si(DS-Si)nanocomposites by in-situ electroless deposition method using Si granules as the active materials and copper sulfate as Cu *** ratio of Si and Cu was readily tuned by varying the concentration of copper *** multi-shell(Cu@CuxSi/SiO2)coating on Si surface promotes the formation of robust and dense SEI films and the transportation of ***,the obtained DS-Si composites exhibit an initial coulombic efficiency of 86.2%,a capacity of 1636 mAh g^-1 after 100 discharge-charge cycles at 840 mA g^-1,and an average charge capacity of 1493 mAh g^-1 at 4200 mA g^-*** study provides a low-cost and large-scale approach to the preparation of nanostructured Si-metal composites anodes with good electrochemical performance for lithium ion batteries.

关键词： Silicon nanoparticles Multi-shell coating Electroless deposition Anode materials Lithium ion batteries

Cp^*Co(Ⅲ)-catalyzed C—H amidation of azines with dioxazolones

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Chinese Chemical Letters 2020年第12期31卷 3237-3240页

作者： Yanzhen huang Chao Pi zhen Tang Yangjie Wu Xiuling Cui Henan Key Laboratory of Chemical Biology and Organic Chemistry Key Laboratory of Applied Chemistry of Henan UniversitiesCollege of ChemistryGreen Catalysis CenterZhengzhou UniversityZhengzhou 450052China

Cp^*Co(Ⅲ)-catalyzed direct C—H amidation of azines has been *** co nversion could proceed smoothly in the absence of external oxidants,acids or bases,with excellent regioselectivity and broad functional group tolerance,CO2 was released as the sole byproduct,thus providing an environmentally benign amidation *** products obtained are important intermediates in organic synthesis.

关键词： Cp^*Co(Ⅲ)-catalyzed Azines Amidation Dioxazolone

Boosting the polysulfide confinement in B/N–codoped hierarchically porous carbon nanosheets via Lewis acid–base interaction for stable Li–S batteries

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Journal of Energy Chemistry 2020年第12期29卷 90-100页

作者： Dong-Gen Xiong Ze Zhang Xiao-Yun huang Yan huang Ji Yu Jian-Xin Cai zhen-Yu Yang College of Chemistry Key laboratory of Jiangxi Province for Environment and Energy CatalysisNanchang UniversityNanchang 330031 JiangxiChina

Carbon materials have shown remarkable usefulness in facilitating the performance of insulating sulfur cathode for lithium–sulfur batteries owing to their excellent conductivity and porous structure. However,the anxiety is the poor affinity toward polar polysulfides due to the intrinsic nonpolar surface of ***, we report a direct pyrolysis of the mixture urea and boric acid to synthesize B/N–codoped hierarchically porous carbon nanosheets(B–N–CSs) as efficient sulfur host for lithium–sulfur battery. The graphene–like B–N–CSs provides high specific surface area and porous structure with abundant micropores(1.1 nm) and low–range mesopores(2.3 nm), thereby constraining the sulfur active materials within the pores. More importantly, the codoped B/N elements can further enhance the polysulfide confinement through strong Li–N and B–S interaction based on the Lewis acid–base theory. These structural superiorities significantly suppress the shuttle effect by both physical confinement and chemical interaction, and promote the redox kinetics of polysulfide conversion. When evaluated as the cathode host, the S/B–N–CSs composite displays the excellent performance with a high reversible capacity up to 772 m A h g–1 at 0.5 C and a low fading rate of ^0.09% per cycle averaged upon 500 cycles. In particular, remarkable stability with a high capacity retention of 87.1% can be realized when augmenting the sulfur loading in the cathode up to 4.6 mg cm^(-2).

关键词： Lithium–sulfur batteries Porous carbon nanosheets B/N–codoped Lewis acid–base Bimodal–pore structure

益肾固疏方干预老年性骨质疏松症患者骨代谢标志物的变化及临床疗效

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中国组织工程研究 2024年第8期28卷 1155-1160页

作者：章晓云刘桦柴源陈锋曾浩高振罡黄有荣广西中医药大学附属瑞康医院广西壮族自治区南宁市530011

背景:随着疾病治疗模式的改变及近年来对老年性骨质疏松症研究的深入,越来越多的研究证实中医药在防治老年性骨质疏松症方面的效果显著。目的:探讨益肾固疏方对肾虚血瘀型老年性骨质疏松症患者骨代谢标志物的影响。方法:选择2020年7月至... 详细信息

背景:随着疾病治疗模式的改变及近年来对老年性骨质疏松症研究的深入,越来越多的研究证实中医药在防治老年性骨质疏松症方面的效果显著。目的:探讨益肾固疏方对肾虚血瘀型老年性骨质疏松症患者骨代谢标志物的影响。方法:选择2020年7月至2022年3月广西中医药大学附属瑞康医院收治的肾虚血瘀型老年性骨质疏松症患者102例,其中男32例,女70例,年龄71-93岁。采用随机数字表法将102例患者分为试验组及对照组,每组51例,对照组给予碳酸钙D3颗粒+阿仑磷酸钠片治疗,治疗组给予碳酸钙D3颗粒+阿仑磷酸钠片+益肾固疏方治疗,连续治疗3个月。治疗前及治疗3个月后,检测两组患者L_(1-4)椎体与左侧股骨颈骨密度,评估目测类比评分,检测血清骨钙素、骨桥素、Ⅰ型胶原交联C-末端肽及抗酒石酸酸性磷酸酶水平,评估中医证候积分与治疗有效率。结果与结论:①两组治疗3个月后的L1-4椎体与左侧股骨颈骨密度均高于治疗前(P<0.05),试验组治疗3个月后的L1-4椎体与左侧股骨颈骨密度均高于对照组(P<0.05);②两组治疗3个月后的目测类比评分均低于治疗前(P<0.05),试验组治疗3个月后的目测类比评分低于对照组(P<0.05);③两组治疗3个月后的血清骨钙素、骨桥素、Ⅰ型胶原交联C-末端肽及抗酒石酸酸性磷酸酶水平均较治疗前明显改善(P<0.05),试验组治疗3个月后的血清骨钙素、骨桥素水平高于对照组(P<0.05),Ⅰ型胶原交联C-末端肽及抗酒石酸酸性磷酸酶水平低于对照组(P<0.05);④两组治疗3个月后的中医证候总评分均低于治疗前,试验组治疗3个月后的中医证候总评分低于对照组;治疗3个月后,两组均未发生明显不良反应,试验组于对照组治疗总有效率分别为88.2%,70.6%,组间比较差异有显著性意义(P<0.05);⑤结果显示,益肾固疏方联合抗骨质疏松药物可通过调节骨代谢、提高骨密度、减轻患者病痛来显著改善肾虚血瘀型老年性骨质疏松症患者的临床症状,阻止疾病的进一步发展。

关键词：骨质疏松症骨代谢标志物益肾固疏方中医药临床疗效随机对照试验

Crystal structure and enhanced microwave dielectric properties of the Ce_(2)[Zr_(1−x)(Al_(1/2)Ta_(1/2))_(x)]_(3)(MoO_(4))_(9) ceramics at microwave frequency

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Journal of Advanced Ceramics 2022年第3期11卷 392-402页

作者： Chao feng Xu ZHOU Bingjing TAO Haitao WU Shifeng huang Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials University of JinanJinan250022China School of Environmental and Material Engineering Yantai UniversityYantai264005China

Dense microwave dielectric ceramics of Ce_(2)[Zr_(1−x)(Al_(1/2)Ta_(1/2))_(x)]_(3)(MoO_(4))_(9)(CZMAT) (x = 0.02–0.10) were prepared by the conventional solid-state route. The effects of (Al1/2Ta1/2)^(4+) on their microstructures, sintering behaviors, and microwave dielectric properties were systematically investigated. On the basis of the X-ray diffraction (XRD) results, all the samples were matched well with Pr_(2)Zr_(3)(MoO_(4))_(9) structures, which belonged to the space group R3¯c. The lattice parameters were obtained using the Rietveld refinement method. The correlations between the chemical bond parameters and microwave dielectric properties were calculated and analyzed by using the Phillips—Van Vechten—Levine (P—V—L) theory. Excellent dielectric properties of Ce_(2)[Zr_(0.94)(Al_(1/2)Ta_(1/2))_(0.06)]_(3)(MoO_(4))_(9) with a relative permittivity (ε_(r)) of 10.46, quality factor (Q × f) of 83,796 GHz, and temperature coefficient of resonant frequency (τ_(f)) of −11.50 ppm/℃ were achieved at 850 ℃.

关键词： microwave dielectric ceramics Ce_(2)[Zr_(1−x)(Al_(1/2)Ta_(1/2))_(x)]_(3)(MoO_(4))_(9)(CZMAT) Phillips-Van Vechten-Levine(P-V-L)theory low sintering temperature

Comprehensive evaluation and analysis of a nearly zero-energy building heating system using a multi-source heat pump in severe cold region

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Building Simulation 2023年第10期16卷 1949-1970页

作者： Lei Zhang Guohui feng Ainong Li Kailiang huang Shasha Chang School of Municipal and Environmental Engineering Shenyang Jianzhu UniversityShenyang110168China

The integrated application of multi-energy coupled technology in nearly zero-energy building(NZEB)is promising from the perspective of low-carbon development to achieve the goal of net zero ***(photovoltaic/thermal),air,and ground sources were combined organically to establish an experimental platform of a multi-source heat pump(MSHP)system,which can realize flexible switching of multi-energy *** paper presents the analytical hierarchy process and fuzzy comprehensive evaluation method to comprehensively evaluate the five modes of the MSHP system with regard to energy,economic and environmental *** results indicate that the waste heat of the PVT cavity can improve the coefficient of performance of the heat pump unit(COP)by approximately 8.0%.The initial investment in air source heat pump(ASHP)modes is lower than that of a coal-powered *** ground source heat pump(GSHP)modes have high stability and their payback period is 8.81–10.66 *** photovoltaic/thermal-dual source heat pump(PVT-DSHP)mode presents the most appropriate system applied in the NZEB in severe cold region,followed by the DSHP,GSHP,ASHP,and PVT-ASHP *** compared with other modes,COP,annual saving cost,carbon dioxide emission reduction,and comprehensive value of the PVT-DSHP mode have improved by 7.07%–29.57%,2.21%–23.88%,3.38%–14.83%,and 27.91%–52.62%,*** study provides important insights into the practical application and sustainable development of multi-energy coupled systems in the NZEB in severe cold region.

关键词： multi-energy complementarity photovoltaic/thermal heat pump nearly zero-energy building hierarchy process severe cold region

The exploration of cell population data in clinical use: Beyond infectious diseases

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iLABMED 2024年第2期2卷 125-140页

作者： Shayuanzi huang Yin Liu Liu Qian Juan Zhou Dong Wang Department of Laboratory Medicine the First Affiliated HospitalSun Yat-Sen UniversityGuangzhouGuangdongChina Department of Laboratory Medicine Guangxi Hospital Division of the First Affiliated HospitalSun Yat-Sen UniversityNanningGuangxiChina Department of Medical Affair Danaher Diagnostic PlatformShanghaiChina Department of Oncology General Hospital of the Southern Theatre CommandPLAGuangzhouGuangdongChina

Cell population data(CPD)is regarded as the fingerprint of a blood cell at a given *** parameters harbor information associated with cell morphology and can be automatically generated using modern hematological *** studies have revealed many unique clinical applications for CPD,especially for infectious diseases,such as *** example,one monocyte-related CPD parameter is the monocyte distribution width(MDW),which can be generated using a Beckman Coulter hematological *** has received FDA and CE approval for aiding in sepsis diagnosis in adult patients in the emergency ***,MDW can serve as a diagnostic biomarker in patients infected with *** has also been widely explored for possible clinical applications beyond infectious dis-eases,such as for predicting myelodysplastic syndromes,screening for he-matological malignancies,and detecting sterile *** parameter measurements are easily obtained and quite cost-effective,making them practical for clinical ***,there are some potential drawbacks of CPD *** pre-analytical conditions can affect CPD ***-more,CPD are specific to certain hematological analyzers and the result cannot be transferred between different *** practical usefulness of CPD reference intervals is also still *** this review,wesummarize the current studies related to CPD and its clinical *** well-designed clinical studies related to CPD are still expected.

关键词： cell population data Coulter principle hematology analyzer infectious diseases white blood cell

Jupiter Made Abstract, and Then Refined

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Journal of Computer Science & Technology 2020年第6期35卷 1343-1364页

作者： Heng-feng Wei Rui-Ze Tang Yu huang Jian Lv State Key Laboratory for Novel Software Technology Nanjing UniversityNanjing 210023China

Collaborative text editing systems allow multiple users to concurrently edit the same document, which can be modeled by a replicated list object. In the literature, there is a family of operational transformation (OT)-based Jupiter protocols for replicated lists, including AJupiter, XJupiter, and CJupiter. They are hard to understand due to the subtle OT technique, and little work has been done on formal verification of complete Jupiter protocols. Worse still, they use quite different data structures. It is unclear about how they are related to each other, and it would be laborious to verify each Jupiter protocol separately. In this work, we make contributions towards a better understanding of Jupiter protocols and the relation among them. We first identify the key OT issue in Jupiter and present a generic solution. We summarize several techniques for carrying out the solution, including the data structures to maintain OT results and to guide OTs. Then, we propose an implementation-independent AbsJupiter protocol. Finally, we establish the (data) refinement relation among these Jupiter protocols (AbsJupiter included). We also formally specify and verify the family of Jupiter protocols and the refinement relation among them using TLA+ (TLA stands for"Temporal Logic of Actions") and the TLC model checker. To our knowledge, this is the first work to formally specify and verify a family of OT-based Jupiter protocols and the refinement relation among them. It would be helpful to promote a rigorous study of OT-based protocols.

关键词： Jupiter protocol operational transformation refinement replicated list TLA+