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Building Simulation 2023年第10期16卷 1799-1819页

作者： haoxin Dong Chuanbo Xu Wenjun Chen School of Economics and Management North China Electric Power UniversityBeijing 102206China Beijing Key Laboratory of New Energy and Low-Carbon Development(North China Electric Power University) ChangpingBeijing 102206China

Rooftop photovoltaic(PV)systems are represented as projected technology to achieve net-zero energy building(NEZB).In this research,a novel energy structure based on rooftop PV with electric-hydrogen-thermal hybrid energy storage is analyzed and optimized to provide electricity and heating load of residential ***,the mathematical model,constraints,objective function,and evaluation indicators are ***,the simulation is conducted under the stand-alone *** annual return on investment and the levelized cost of energy of the system are 36.37%and 0.1016$/kWh,*** building with the proposed system decreases annual carbon emission by 25.5 *** the third part,simulation analysis under different grid-connected modes shows that building system will obtain better economics when connected to the grid,but the low-carbon performance will be ***,the cumulative seasonal impact of the countywide rooftop PV buildings is *** result indicates that the energy structure proposed in this paper can effectively reduce the grid-connected impact on the local *** model and optimization method developed in this paper is applicable to different climate zones and can provide management support to the investors of NZEB before the field test.

关键词： rooftop PV configuration optimization net-zero energy building optimal size

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虾青素对猪卵母细胞体外成熟的影响

中国兽医学报 2022年第12期42卷 2549-2554页

作者：许建春汪浩鑫自永宏杨小芬闫茜陈梦佳石德顺陆凤花广西大学亚热带农业生物资源保护与利用国家重点实验室广西南宁530004

本研究旨在探讨虾青素(astaxanthin,Ast)对猪卵母细胞体外成熟及孤雌激活胚胎发育的影响,为进一步优化猪卵母细胞体外成熟培养体系提供参考。首先,将GV期猪卵母细胞培养在添加有不同浓度虾青素(0,5,10,20,40μmol/L)的体外成熟液中,40~4... 详细信息

本研究旨在探讨虾青素(astaxanthin,Ast)对猪卵母细胞体外成熟及孤雌激活胚胎发育的影响,为进一步优化猪卵母细胞体外成熟培养体系提供参考。首先,将GV期猪卵母细胞培养在添加有不同浓度虾青素(0,5,10,20,40μmol/L)的体外成熟液中,40~44 h后统计第一极体排出率。结果显示与对照组相比,各处理组卵母细胞的第一极体排出率均显著升高(P<0.05),其中10μmol/L处理组卵母细胞的第一极体排出率显著高于5,20,40μmol/L处理组(P<0.05)。随后对MⅡ期卵母细胞进行孤雌激活处理,结果发现10μmol/L和20μmol/L处理组的卵裂率和囊胚发育率显著高于对照组(P<0.05),且10μmol/L处理组囊胚发育率显著高于20μmol/L处理组(P<0.05)。最后,检测虾青素处理后MⅡ期卵母细胞的活性氧水平、丙二醛及谷胱甘肽的含量,以及整个胚胎发育阶段中抗氧化酶相关基因SOD1和GPX4的表达变化,发现GV期卵母细胞经10μmol/L虾青素处理后,孤雌激活囊胚的细胞数极显著升高(P<0.01);而MⅡ期卵母细胞的活性氧水平和丙二醛含量与对照组相比极显著降低(P<0.01),谷胱甘肽含量显著升高(P<0.05)。实时荧光定量PCR(qRT-PCR)结果显示,与对照组相比,GPX4基因在10μmol/L处理组MⅡ期卵母细胞中显著升高(P<0.05)。SOD1基因在10μmol/L处理组中MⅡ期卵母细胞、4-细胞和囊胚期的表达极显著高于对照组(P<0.01)。结果表明,卵母细胞体外成熟液中添加适量浓度的虾青素可有效促进卵母细胞的发育潜能。

关键词：虾青素卵母细胞体外成熟孤雌胚胎

Modification on the Performance of the Hemihydrate Gypsum with the Plant Source Polymer of Dry Matcha Powder

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Journal of Wuhan University of Technology(Materials Science) 2018年第6期33卷 1452-1458页

作者： LI haoxin wang Yanwei Key Laboratory of Advanced Civil Engineering Materials Ministry of Education Tongji University China Railway No.9 Engineering Testing Co. Ltd

The objective of this study was to assess the feasibility of using the plant-source polymer of the matcha powder as a composite admixture for hemihydrate gypsum. Hemihydrate gypsum was mixed with different contents of matcha powder, and then the water requirement for the normal consistency, setting times, density, strength, hydration and microstructure of the hardened mixture were evaluated. The experimental results showed that it increased the water requirement for the normal consistency, and it regulated the setting times and reduced the density. Hemihydrate gypsum with more matcha powder had the higher water requirement, longer setting times and lower density. Less than 1% matcha powder had slight impact on the strength of hardened paste, but more than 1% matcha powder had a remarkable one. Matcha powder changed the hydration process and prolonged the induction and acceleration period. Small needlelike crystals were transformed into longer, larger and thicker ones as more matcha powder was mixed. This case is closely related to the prolongation of the induction and acceleration period. Besides, more and larger pores were observed in the hardened paste with more matcha powder. It is attributed to the appearances of the tea polyphenol in matcha powder and the larger and longer crystal morphology in hardened paste as well as the high water requirement for the normal consistency. These results are important to the application of matcha powder as a composite admixture for the hemihydrate gypsum as well as the prosperity and development of the tea industry.

关键词： matcha powder hemihydrate gypsum strength hydration property microstructure

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用碳酸钠和碳酸钾混合试剂合成除草醚的研究

阜阳师范学院学报(自然科学版) 1988年第2期 20-26页

作者：焦肇林史好新王修然汤开元安师大化学系

本文研究了用碳酸钠和碳酸钾混合试剂合成除草醚的新方法。此法改变原碳酸钾法固体加料成盐,采用把混合试剂配成水溶液回流成盐的方法,产品质量好,收率高,成本大幅度下降。

关键词：除草醚 2,4-二氯苯基-4’-硝基苯基醚醚类除草剂试剂成盐二氯苯酚碳酸钾钾碱碳酸盐碳酸钠纯碱

Influences of fluorination on homoleptic iridium complexes with C^N=N type ligand to material properties, ligand orientation and OLED performances

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Science China Chemistry 2015年第4期58卷 640-649页

作者： Chen Liu Le Mao haoxin Jia Zhangjin Liao Hongjiao wang Baoxiu Mi Zhiqiang Gao Key Laboratory for Organic Electronics & Information Displays (KLOEID) Jiangsu Engineering Centre for Plate Displays & Solid State Lighting Institute of Advanced Materials (IAM) School of Material Science and EngineeringNanjing University of Posts & Telecommunications

Two new iridium complexes with C^N=N type ligand （i.e., Ir（BFPPya）3{tris[3,6-bis（4-fluorophenyl）pyridazine]iridium（III）} and Ir（BDFPPya）3{tris[3,6-bis（2,4-di-fluorophenyl）pyridazine]iridium（III）}） attaching with fluorine atoms, were synthesized and the effects of fluorination on the material properties and device performance were investigated. Compared with our previously reported fluorine-free analogue material, that is Ir（BPPya）3{tris[3,6-bis（phenyl）pyridazine]iridium（III）}, blue shifts in the emission spectra as well as in the long wavelength region of the absorptions were observed. The photoluminescence quantum yield （PLQY）（0.44 and 0.84 vs. 0.29）, phosphoresces lifetime （0.88 and 1.31 vs. 0.66 gs）, and oxidation potential （1.10 and 1.37 vs. 0.95 V） increased obviously after fluorinating the ligand. In contrast, the thermal stability of the iridium complexes decreased slightly （Td： 435 and 402 vs. 440 ℃）. In the density functional theory （DFT） calculations, by comparing the steric shape of the three ligands within one optimized molecule, orientational differences among the complexes were observed. In OLED device studies, bluish green electroluminescence with peak emission of 500 nm, using the electron-transporting host of TPBI [2,2＇,2＂-（1,3,5-benzenetriyl）tris（1-phenyl-lH-benzimidazole）] and the most fluorinated dopant of Ir（BDFPPya）3, was achieved with maximum efficiency of 20.3 cd/A. On one hand this efficiency is not satisfactory considering a high PLQY of 0.84. On the other hand with the similar device structure, that the （HOMO-LUMO）s of all the dopants are wrapped within that of the host TPBI, and all the triplet energies of the dopants are smaller than that of the host TPBI, it is abnormal that the ordering of device efficiencies is contradictory to that of PLQY. Assisting with the phosphorescent spectrum of TPBI and the absorption spectra of the dopant, the contradiction was interpreted reasonably.

关键词： iridium complex fluorination homoleptic PhOLED

Influence of Late Springtime Surface Sensible Heat Flux Anomalies over the Tibetan and Iranian Plateaus on the Location of the South Asian High in Early Summer

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Advances in Atmospheric Sciences 2019年第1期36卷 93-103页

作者： haoxin ZHANG Weiping LI Weijing LI Laboratory for Climate Studies China Meteorological Administration University of Chinese Academy of Sciences Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology

Variation in the location of the South Asian High （SAH） in early boreal summer is strongly influenced by elevated surface heating from the Tibetan Plateau （TP） and the Iranian Plateau （IP）. Based on observational and ERA-Interim data, diagnostic analyses reveal that the interannual northwestward-southeastwaxd （NW-SE） shift of the SAH in June is more closely correlated with the synergistic effect of concurrent surface thermal anomalies over the TP and IP than with each single surface thermal anomaly over either plateau from the preceding May. Concurrent surface thermal anomalies over these two plateaus in May are characterized by a negative correlation between sensible heat flux over most parts of the TP （TPSH） and IP （IPSH）. This anomaly pattern can persist till June and influences the NW-SE shift of the SAH in June through the release of latent heat （LH） over northeastern India. When the IPSH is stronger （weaker） and the TPSH is weaker （stronger） than normal in May, an anomalous cyclone （anticyclone） appears over northern India at 850 hPa, which is accompanied by the ascent （descent） of air and anomalous convergence （divergence） of moisture flux in May and June. Therefore, the LH release over northeastern India is strengthened （weakened） and the vertical gradient of apparent heat source is decreased （increased） in the upper troposphere, which is responsible for the northwestward （southeastward） shift of the SAH in June.

关键词： Tibetan Plateau Iranian Plateau surface sensible heat flux latent heat of condensation South Asian High

High-tenacity in-situ Ti/Zr-based bulk metallic glasses composites fabricated by industrial high-pressure die casting

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Journal of Materials Science & Technology 2024年第3期170卷 177-185页

作者： Yang Li Wenbo Luo Ying Jin Zhiyong Xue Guiqing wang Yanan Ren haoxin Li Haibo Ke Baoan Sun Weihua wang Institute for Advanced Materials North China Electric Power UniversityBeijing 102206China Songshan Lake Materials Laboratory Dongguan 523808China Institute of Physics Chinese Academy of SciencesBeijing 100190China

The glass-forming ability and mechanical properties of metallic glasses and their composites are well known to be sensitive to the preparation conditions and are highly deteriorated by industrial preparing conditions such as low-purity raw materials and low ***,we showed that a series of in-situ bulk metallic glass composites(BMGCs)which exhibit excellent ductility and segmental work hardening were successfully developed utilizing a high vacuum high-pressure die casting(HV-HPDC)technology along with industrial-grade raw *** tensile properties of these BMGCs are systematically investigated and correlated with the alloy *** compared with the copper mold suction casting method,the volume fraction difference of the dendrite phase for the BMGCs with the same composition is not significant when fabricated by the HV-HPDC,whereas the size of theβ-phase is generally *** BMGCs with the composition of Ti_(48)Zr_(20)(V_(12/17)Cu_(5/17))19 Be 13 obtained by the HV-HPDC process show ductility up to 11.3%under tension at room temperature and exhibit a certain amount of work *** conditions need to be met to enable the BMGCs,which are prepared by vacuum die-casting to retain favorable ductility:(1)The volume fraction ofβphase stays below 62%±2%;(2)The equiaxed crystals with a more uniform size in the range of 5-10μ***,the results of the present study provided guidance for developing BMGCs with good ductile properties under industrial conditions.

关键词： Vacuum die casting Bulk metallic glass composites Mechanical properties β-phase

Silicon carbide waste as a source of mixture materials for cement mortar

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Frontiers of Environmental Science & Engineering 2017年第5期11卷 47-54页

作者： Zhengwu Jiang Qiang Ren haoxin Li Qing Chen Key Laboratory of Advanced Civil Engineering Materials Ministry of Education Tongji University Shanghai 201804 China

This paper presents an investigation of the feasibility of recycling silicon carbide waste （SCW） as a source of mixture materials in the production of cement mortar. Mortars with SCW were prepared by replacing different amounts of cement with SCW, and the properties of the resulting mortars, such as the fluidity, strength and shrinkage, were studied in this work. Thermogravimetry-differential scanning calorimet;＇y and scanning electron microscopy were employed to understand the reasons for the property changes of the mortars. The results indicate that SCW decreases the initial and l-h fluidity of fresh mortar but improves the loss of fluidity. The mortar with SCW exhibits a lower strength at 3 d and7 d but a higher strength at 28 d and 56 d compared to the control. The shrinkage rate of cement mortar with SCW shows an obvious decrease as the replacement ratio increases. In addition, the content of calcium hydroxide in hardened paste also shows that SCW has some impact on the hydration of the cement-SCW system. The microstructures of the hardened paste also show evidence for a later strength change of mortar containing SCW. This work provides a strategic reference for possibly applying SCW as a mixture material in the production of cement mortar.

关键词： Silicon carbide waste Cement mortar Fluidity Strength Shrinkage

Understanding the Soil Temperature Variability at Different Depths:Effects of Surface Air Temperature,Snow Cover,and the Soil Memory

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Advances in Atmospheric Sciences 2021年第3期38卷 493-503页

作者： haoxin ZHANG Naiming YUAN Zhuguo MA Yu HUANG Key Laboratory of Regional−Climate Environment Research for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China Laboratory for Climate and Ocean−Atmosphere Studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100871China School of Atmospheric Sciences Sun Yat-sen UniversityZhuhai 519082China

The soil temperature(ST)is closely related to the surface air temperature(AT),but their coupling may be affected by other *** this study,significant effects of the AT on the underlying ST were found,and the time taken to propagate downward to 320 cm can be up to 10 *** the AT,the ST is also affected by memory effects-namely,its prior thermal *** deeper depth(i.e.,320 cm),the effects of the AT from a particular season may be exceeded by the soil memory effects from the last *** shallower layers(i.e.,<80 cm),the effects of the AT may be blocked by the snow cover,resulting in a poorly synchronous correlation between the AT and the *** northeastern China,this snow cover blockage mainly occurs in winter and then vanishes in the subsequent *** to the thermal insulation effect of the snow cover,the winter ST at layers above 80 cm in northeastern China were found to continue to increase even during the recent global warming hiatus *** findings may be instructive for better understanding ST variations,as well as land−atmosphere interactions.

关键词： soil temperature surface air temperature soil memory snow cover nonlinear causality analysis

西安都市圈生态空间结构特征与生态网络构建研究

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园林 2025年第1期42卷 23-32页

作者：刘恺希孙浩鑫张沛西安建筑科技大学建筑学院西安710055 陕西同济土木建筑设计有限公司西安710002

面对西安都市圈发展过程中出现的生态空间碎片化问题,生态功能完善的需求及区域高质量一体化的发展目标,通过分析西安都市圈生态空间景观格局,提取其结构特征进而构建区域生态网络。利用形态学空间格局等方法提取西安都市圈生态空间结... 详细信息

面对西安都市圈发展过程中出现的生态空间碎片化问题,生态功能完善的需求及区域高质量一体化的发展目标,通过分析西安都市圈生态空间景观格局,提取其结构特征进而构建区域生态网络。利用形态学空间格局等方法提取西安都市圈生态空间结构特征,通过植被覆盖演变分析并识别潜在的具有生态功能的用地,通过设计转化阻力指标体系获得区域生态网络的构建基础。提出网络整合、廊道桥接、网络织补、生态修复4种生态网络整合策略。通过分析生态空间结构发现都市圈的生态斑块、廊道等不同类型生态功能区的分布特点,针对都市圈尺度提出多中心生态网络的规划模式,针对重要生态单元提出“核心—廊道—缓冲区”的规划模式,基于不同的整合策略调整生态用地布局及空间结构,以提高生态网络的连通性与稳定性,构建都市圈生态网络。聚焦生态空间结构演变机制分析、生态网络构建技术路径及模式探索,提出西安都市圈的生态空间结构,为生态空间规划提供新思路和新方法,这对于推动中国都市圈发展迈向更高水平具有积极意义。

关键词：西安都市圈生态空间结构形态学空间格局分析最小累积阻力模型生态网络