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基于海绵城市理论与实践的高速公路立交互通绿地景观设计研究

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广州城市职业学院学报 2017年第2期11卷 43-47页

作者：郑华旭广州市林业和园林绿化工程建设中心广东广州510000

文章尝试探索海绵城市理论在高速公路立交互通绿地的景观设计方法,把海绵城市建设五大基本要素:坡度、土壤、地下水、给排水设施和植物合理运用在高速公路立交互通绿地设计中,归纳出具有实践意义的设计方法,从而有效解决高速公路立交互... 详细信息

文章尝试探索海绵城市理论在高速公路立交互通绿地的景观设计方法,把海绵城市建设五大基本要素:坡度、土壤、地下水、给排水设施和植物合理运用在高速公路立交互通绿地设计中,归纳出具有实践意义的设计方法,从而有效解决高速公路立交互通绿地光照条件较差,管养难等问题。实现提高城市绿地的雨水涵养能力、节能减排能力以及生态调控能力的目标,促进建设自然积存、自然渗透、自然净化的海绵城市建设愿景。

关键词：景观设计高速公路立交海绵城市

基于因子分析法的福州市职业中专学生体育消费影响因素研究

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佳木斯教育学院学报 2012年第2期 345-346页

作者：郑旭华福州环保职业中专学校福建福州350002

采用问卷调查法与数理统计法对十三所福州市市属中等职业学校的学生进行调查,在福州市职专学生体育消费影响因素的14项指标中提取了三个影响因子,即个人因子、体育消费产品因子和学校因子,这3个因子累计方差贡献率达到67.364%。研究提示... 详细信息

采用问卷调查法与数理统计法对十三所福州市市属中等职业学校的学生进行调查,在福州市职专学生体育消费影响因素的14项指标中提取了三个影响因子,即个人因子、体育消费产品因子和学校因子,这3个因子累计方差贡献率达到67.364%。研究提示:三个因子可全面反映福州市职业中专学生体育消费的特征。

关键词：因子分析法体育消费职业中专

Small extracellular vesicles derived from human induced pluripotent stem cell-differentiated neural progenitor cells mitigate retinal ganglion cell degeneration in a mouse model of optic nerve injury

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Neural Regeneration Research 2025年第2期20卷 587-597页

作者： Tong Li Hui-Min Xing Hai-Dong Qian Qiao Gao Sheng-Lan xu hua Ma Zai-Long Chi State Key Laboratory of Ophthalmology Optometry and Visual ScienceEye HospitalWenzhou Medical UniversityWenzhouZhejiang ProvinceChina National Clinical Research Center for Ocular Diseases Eye HospitalWenzhou Medical UniversityWenzhouZhejiang ProvinceChina

Several studies have found that transplantation of neural progenitor cells(NPCs)promotes the survival of injured ***,a poor integration rate and high risk of tumorigenicity after cell transplantation limits their clinical *** extracellular vesicles(sEVs)contain bioactive molecules for neuronal protection and *** studies have shown that stem/progenitor cell-derived sEVs can promote neuronal survival and recovery of neurological function in neurodegenerative eye diseases and other eye *** this study,we intravitreally transplanted sEVs derived from human induced pluripotent stem cells(hiPSCs)and hiPSCs-differentiated NPCs(hiPSC-NPC)in a mouse model of optic nerve *** results show that these intravitreally injected sEVs were ingested by retinal cells,especially those localized in the ganglion cell *** with hiPSC-NPC-derived sEVs mitigated optic nerve crush-induced retinal ganglion cell degeneration,and regulated the retinal microenvironment by inhibiting excessive activation of *** analysis further revealed that hiPSC-NPC derived sEVs transported neuroprotective and anti-inflammatory miRNA cargos to target cells,which had protective effects on RGCs after optic nerve *** findings suggest that sEVs derived from hiPSC-NPC are a promising cell-free therapeutic strategy for optic neuropathy.

关键词： exosome miRNA neural progenitor cell neurodegeneration neuroinflammation neuroprotection optic nerve crush optic neuropathy retinal ganglion cell small extracellular vesicles

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钻井废水的无害化处理研究

当代化工 2013年第10期42卷 1456-1460页

作者：郑旭华郑璐新疆化工学校新疆乌鲁木齐830021 新疆林业科学研究院新疆乌鲁木齐830000

阐述钻井废水的无害化处理方法,对钻井废水依次进行酸化处理、中和处理、絮凝处理、离心分离处理和氧化处理后,达标排放。

关键词：钻井废水无害化处理达标排放

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干酪素含量的测定方法研究

安徽化工 2013年第6期39卷 79-82页

作者：郑旭华高旭郑璐新疆化工学校旭华工作室新疆乌鲁木齐830021 新疆维吾尔自治区人民医院新疆乌鲁木齐830021 新疆林业科学研究院新疆乌鲁木齐830000

用双缩脲法测定奶渣法生产的干酪素含量,与常用的凯氏定氮法结果比较,两种方法所得实验结果无显著性差异。

关键词：干酪素双缩脲法凯氏定氮法测定方法含量

Rapid and scalable preparation of highly quaternized polymer networks to achieve efficient simultaneous adsorption of iodide and pertechnetate

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Science China Chemistry 2025年第01期 337-349页

作者： Meiyun xu Song Gu Fulong Chen Zhe Zhao Peng Liu Daoben hua State Key Laboratory of Radiation Medicine and Protection School of Radiological and Interdisciplinary Sciences (RAD-X) Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions Soochow University

The efficient separation of fission products,such as TcO4-and I-,holds strategic significance for the management of radioactive wastes and environmental *** this study,we propose an ultrafast strategy for scalable preparation of a highly quaternized organic network to facilitate efficient and synchronous separation of iodide and *** network can be prepared within a few minutes at room temperature,using polyethylenimine and 1,2,4,5-tetrakis（bromomethyl）benzene as building *** chlorine replacement,the network,abundantly decorated with quaternary ammonium groups （Cl@QPN）,exhibits an ultrahigh positive charge density of 7.6 mmol/*** enables the rapid and efficient enrichment of target anions through strong electrostatic Coulomb *** a result,Cl@QPN exhibits significantly higher adsorption rate constants of 0.830 g/（mg min） for ReO4-（a nonradioactive surrogate of TcO4-） and 0.677 g/（mg min） for I-compared to other ***,it possesses high adsorption capacities,reaching 1,681 mg/g for ReO4-and 917.4 mg/g for I-.Cl@QPN also demonstrates good selectivity towards target ions and shows efficient adsorption for99TcO4-.Additionally,Cl@QPN exhibits high dynamic processing capacities,handling up to 3,100 and 7,400 kg of simulated streams per kilogram of material for I-and ReO4-,respectively.

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The complex roles of m^(6)A modifications in neural stem cell proliferation, differentiation, and self-renewal and implications for memory and neurodegenerative diseases

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Neural Regeneration Research 2025年第6期20卷 1582-1598页

作者： Yanxi Li Jing xue Yuejia Ma Ke Ye xue Zhao Fangliang Ge Feifei zheng Lulu Liu xu Gao Dayong Wang Qing Xia Department of Biochemistry and Molecular Biology College of Basic Medical SciencesHarbin Medical UniversityHarbinHeilongjiang ProvinceChina College of Basic Medical Sciences Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Basic Medical Institute Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Key Laboratory of Heilongjiang Province for Genetically Modified Animals Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Translational Medicine Research and Cooperation Center of Northern China Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Dongzhimen Hospital Beijing University of Chinese MedicineBeijingChina

N6-methyladenosine(m^(6)A), the most prevalent and conserved RNA modification in eukaryotic cells, profoundly influences virtually all aspects of mRNA metabolism. mRNA plays crucial roles in neural stem cell genesis and neural regeneration, where it is highly concentrated and actively involved in these processes. Changes in m^(6)A modification levels and the expression levels of related enzymatic proteins can lead to neurological dysfunction and contribute to the development of neurological diseases. Furthermore, the proliferation and differentiation of neural stem cells, as well as nerve regeneration, are intimately linked to memory function and neurodegenerative diseases. This paper presents a comprehensive review of the roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, as well as its implications in memory and neurodegenerative diseases. m^(6)A has demonstrated divergent effects on the proliferation and differentiation of neural stem cells. These observed contradictions may arise from the time-specific nature of m^(6)A and its differential impact on neural stem cells across various stages of development. Similarly, the diverse effects of m^(6)A on distinct types of memory could be attributed to the involvement of specific brain regions in memory formation and recall. Inconsistencies in m^(6)A levels across different models of neurodegenerative disease, particularly Alzheimer's disease and Parkinson's disease, suggest that these disparities are linked to variations in the affected brain regions. Notably, the opposing changes in m^(6)A levels observed in Parkinson's disease models exposed to manganese compared to normal Parkinson's disease models further underscore the complexity of m^(6)A's role in neurodegenerative processes. The roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, and its implications in memory and neurodegenerative diseases, appear contradictory. These inconsistencies may be a

关键词： Alzheimer's disease cell self-renewal central nervous system memory microglia nerve regeneration neurodegenerative diseases neurogenesis RNA methylation

Deciphering the role of ultra-low-loaded rhodium in NiFe-MIL-53 for superior oxygen evolution reaction

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Journal of Energy Chemistry 2025年第1期100卷 77-86页

作者： Jinzhi Jia Jinhua Zhang Kailu Guo Lanyue Zhang Gening Du Hao You Junfeng huang Mudong Tu hua Li Yong Peng Wei Dou Cailing xu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering School of Materials and Energy Lanzhou University College of Chemistry and Chemical Engineering Luoyang Normal University

Designing highly active and stable electrocatalysts of oxygen evolution reaction （OER） is one of the crucial *** this study,a novel OER electrocatalyst,NiFe-MIL-53 modified with ultra-low rhodium（Rh@NiFe-MIL-53）,is successfully prepared via the hydrothermal ***-situ Raman spectroscopy and electrochemical impedance spectroscopy reveal that the doped Rh accelerates the phase transformation of NiFe-MIL-53 and the in-situ formed Rh@NiFeOOH is the actual active *** importantly,the enhanced reversibility of electrochemical reconstruction between NiFeOOH and NiFe（OH）2after doping Rh is beneficial for improving the electrochemical stability of the catalyst.X-ray photoelectron spectroscopy spectra show the strong electronic interaction between single-atom Rh and Ni/Fe in Rh@***,theoretical calculations confirm that the integration of single-atom Rh into the NiFeOOH successfully reduces the band gap,regulates the d-band center （εd）,accelerates the charge transfer,and optimizes the adsorption behavior of oxygen-containing intermediates,thereby lowering the energy barrier of rate-determining ***,the optimized Rh@NiFe-MIL-53 exhibits excellent OER activity （240 mV） with a small Tafel slope of 48.2 mV dec-1and long-term durability (over1270 h at 10 m A cm-2and 110 h at 200 mA cm-2).This work presents a new perspective on designing highly efficient OER electrocatalysts.

关键词： X ray photoelectron spectroscopy

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紫胶色酸酯的制备工艺优化

食品科学 2016年第22期37卷 28-33页

作者：刘兰香普真琪郑华徐涓李坤张弘中国林业科学研究院资源昆虫研究所国家林业局特色森林资源工程技术研究中心云南昆明650224

对紫胶色酸分子中的羧基先进行甲酯化,然后再用醋酸酐进行乙酰化,最后制备得到了紫胶色酸酯。通过单因素及正交试验确定了紫胶色酸酯的制备工艺条件为:紫胶色酸1.0 g、对甲苯磺酸用量为紫胶色酸质量的5.0%、甲酯化时间36 h、醋酸酐用量1... 详细信息

对紫胶色酸分子中的羧基先进行甲酯化,然后再用醋酸酐进行乙酰化,最后制备得到了紫胶色酸酯。通过单因素及正交试验确定了紫胶色酸酯的制备工艺条件为:紫胶色酸1.0 g、对甲苯磺酸用量为紫胶色酸质量的5.0%、甲酯化时间36 h、醋酸酐用量1.0 m L、三乙胺用量2.5 m L。在此条件紫胶色酸的酯化率为81.3%,标准偏差为0.67%。通过傅里叶变换红外光谱、紫外-可见吸收光谱表征表明紫胶色酸酯中酯基及烷基的吸收峰变强;通过差示扫描量热仪及热重分析测定,表明紫胶色酸酯的熔融温度为68℃,温度高于198℃时出现热分解。紫胶色酸酯的色价为121,可溶于大多数有机溶剂,脂溶性增强,其在1 L菜籽油可溶解0.340 g,保存28 d后,油样呈红色,且澄清无沉淀,保存率达96.2%,说明其稳定性良好,对油脂类物质染色效果好,具有潜在的应用价值和前景。

关键词：紫胶色酸紫胶色酸酯正交试验脂溶性