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Synthesis and characterization of a 1,3-dibutylimidazolium azide([BBIm][N_(3)]) : A promising green energetic ionic liquid

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Defence Technology（防务技术） 2024年第8期38卷 1-15页

作者： Nawel Matmat Amir Abdelaziz Djalal Trache Achour Sabrina Ahmed Fouzi Tarchoun Hani Boukeciat Sourbh Thakur weiqiang Pang Thomas M.Klapotke Energetic Materials Laboratory(EMLab) Teaching and Research Unit of Energetic ProcessesEcole Militaire PolytechniqueBP 17 Bordj El-BahriAlgiers 16046Algeria Department of Organic Chemistry Bioorganic Chemistry and BiotechnologySilesian University of TechnologyB.Krzywoustego 444-100 GliwicePoland Xi'an Modern Chemistry Research Institute Xi'an 710065China Energetic Materials Research Department of ChemistryLudwig-Maximilian UniversityMunich Butenandtstrasse 5-13(D)D-81377 MunichGermany

In the pursuit of advancing imidazolium-based energetic ionic liquids (EILs),the current study is devoted to the synthesis and characterization of 1,3-dibutyl-imidazolium azide ([BBIm][N_(3)]),as a novel member in this ionic liquids *** chemical structure of this EIL was rigorously characterized and confirmed using FTIR spectroscopy,1D,and 2D-NMR *** thermal behavior assessment was conducted through DSC and TGA *** analysis revealed an endothermic glass transition at T_(g)=-61℃,followed by an exothermic degradation event at T_(onset)=311℃.Similarly,TGA thermograms exhibited a one-stage decomposition process resulting in 100% mass loss of the ***,the short-term thermal stability of the azide EIL was investigated by combining the non-isothermal TGA data with the TAS,it-KAS,and VYA/CE isoconversional kinetic ***,the Arrhenius parameters(E_(a)=154 kJ·mol^(-1),Log(A/s^(-1))=11.8) and the most probable reaction model g(a) were *** observed high decomposition temperatures and the significantly elevated activation energy affirm the enhanced thermal stability of the modified *** findings revealed that[BBIm][N_(3)]EIL can be a promising candidate for advanced energetic material application.

关键词： 1,3-dibutyl-imidazolium azide[BBIm][N_(3)] Energetic imidazolium-base ionic liquids 1D-/2D-NMR analyses Short-term thermal stability Isoconversional approaches

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利用蜡烛灰制备超疏水疏油抗菌涂层

高等学校化学学报 2019年第2期40卷 379-384页

作者：谢超洪国辉杨伟强王继库赵丽娜吉林师范大学化学学院四平136000 吉林师范大学环境友好材料制备与应用教育部重点实验室长春130103 东北师范大学物理学院长春130000 东北师范大学紫外光发射材料与技术教育部重点实验室长春130000

利用蜡烛灰制备了超疏水疏油涂层,并证明其具有优异的抗菌性能.蜡烛灰的多孔网状的纳米结构放大了低表面能全氟辛基硅烷(TMEDA)的润湿性,达到了超疏水疏油的目的.

关键词：涂层超疏水疏油抗菌性能蜡烛灰

组合式可变应力接骨板内固定干预山羊股骨骨折断端的骨组织细胞功能及骨密度变化

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中国组织工程研究 2021年第6期25卷 890-894页

作者：杨卫强丁童杨卫可蒋振刚新乡市中心医院骨科河南省新乡市453003

背景:普通直型接骨板可影响骨折断端生物力学的传导,组合式可变应力接骨板可保留骨折断端持续的生物力学刺激,影响骨组织细胞功能及骨密度改变,促进骨折愈合。目的:探讨两种不同接骨板内固定对实验性山羊股骨骨折愈合骨组织细胞功能及... 详细信息

背景:普通直型接骨板可影响骨折断端生物力学的传导,组合式可变应力接骨板可保留骨折断端持续的生物力学刺激,影响骨组织细胞功能及骨密度改变,促进骨折愈合。目的:探讨两种不同接骨板内固定对实验性山羊股骨骨折愈合骨组织细胞功能及骨密度的影响。方法:健康成年山羊30只,普通环境下饲养,制作山羊右下肢股骨骨折动物模型,随机分为组合式可变应力接骨板组(实验组)及普通直型接骨板组(对照组),每组15只。两组于术后4,8,12周测定血清中骨特异性碱性磷酸酶、骨钙素水平及抗酒石酸酸性磷酸酶活性,并分批处死山羊,取股骨断端组织行骨密度及组织病理学观察。结果与结论:①术后4,8周实验组血清中骨特异性碱性磷酸酶增高较对照组快,但到12周明显低于对照组(P<0.05);②术后4周,实验组血清中骨钙素含量大于对照组,12周小于对照组(P<0.05);③术后4,8周实验组抗酒石酸酸性磷酸酶活性增高较对照组快,但到12周明显低于对照组(P<0.05);④实验组8,12周骨折断端骨密度明显高于对照组(P<0.05),实验组和对照组4,8,12周骨密度均逐渐增大(P<0.05);⑤术后4,8周实验组成骨细胞数明显多于对照组,8周破骨细胞数明显多于对照组,12周成骨细胞及破骨细胞明显少于对照组(P<0.05);⑥提示组合式可变应力接骨板内固定可使山羊股骨骨折断端产生持续压应力,刺激骨折断端骨组织细胞数量变化,导致相应骨组织细胞功能蛋白分泌,促进骨痂生成,加快骨痂改建,促进骨折愈合。

关键词：骨骨折细胞骨折愈合内固定应力接骨板骨密度

Deep neck infection:a review of one hundred thirty cases in southern China

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Deep neck infection:a review of one hundred thirty cases in ...

中华医学会第十三次全国耳鼻咽喉——头颈外科学术会议

作者： Wenbin Lei weiqiang yang Weiping Wen Jie Luo Zhangfeng Wang Dongfang Lin Guangli Jiang Hao Qin Jianhui Wu Division of Otorhinolaryngology The First Affiliated Hospital of Sun Yat-sen University Otorhinolaryngology Institute Sun Yat-sen University Division of Rheumatology The Third Affiliated Hospital of Sun Yat-sen University

Background The study summarizes cases of deep neck infection in southern China and compares their characteristics with those of cases reported elsewhere. Methods Patients diagnosed with deep neck infection in the Division of Otolaryngology in the First Affiliated Hospital of Sun Yat-sen University between 2001 and 2011 were screened retrospectively for demographics,etiology,

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氯法拉滨的合成

中国医药工业杂志 2011年第6期42卷 404-407页

作者：陈云华杨伟强白骅浙江省台州职业技术学院浙江海正药业股份有限公司浙江台州318000

以鸟苷为原料,经乙酰化、氯代、重氮化后氯代及氨解反应制得关键中间体2-氯-2′,3′,5′-三-O-乙酰基腺苷(6)。6在盐酸羟胺-乙酸钠-吡啶体系中选择性脱2′-乙酰基,再经三氟甲磺酰化、氟代及脱保护反应制得抗白血病药氯法拉滨,总收率8%。

关键词：氯法拉滨抗白血病药合成

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不同煤阶煤制生物甲烷的代谢功能差异性研究

煤炭科学技术 2021年第12期49卷 119-126页

作者：侯彪王子升周艺璇杨伟强王银伟河南理工大学能源科学与工程学院河南焦作454000 国家能源投资集团神东技术研究院陕西神木719315

为研究不同煤阶煤制生物甲烷产量与微生物代谢功能之间的耦合关系,选择褐煤、长焰煤、气煤和焦煤4种不同煤阶煤样,通过对发酵过程中生物甲烷含量以及其代谢功能进行测试,同时借助修正的Gompertz模型,对不同煤制生物甲烷的成气潜力、代... 详细信息

为研究不同煤阶煤制生物甲烷产量与微生物代谢功能之间的耦合关系,选择褐煤、长焰煤、气煤和焦煤4种不同煤阶煤样,通过对发酵过程中生物甲烷含量以及其代谢功能进行测试,同时借助修正的Gompertz模型,对不同煤制生物甲烷的成气潜力、代谢功能丰度以及两者之间的相关性进行了分析。研究结果表明,以长焰煤为底物的煤制生物甲烷试验中累积产气量明显高于其他试验组,且生物甲烷产量较褐煤、气煤和焦煤分别增加了10.82%、38.88%和73.49%。修正的Gompertz模型拟合结果得出,长焰煤试验组的生物甲烷产气潜力最大,且随着底物煤阶的升高,滞后时间也在逐渐增加。长焰煤试验组参与微生物代谢功能的相对丰度明显高于其他试验组,这与生物产气结果几乎完全相符,且参与辅酶转运与代谢和碳水化合物运输和代谢这2种代谢功能与最大甲烷生成潜力之间存在良好的线性关系(R^(2)=0.727,R^(2)=0.945)。功能基因预测结果显示,长焰煤试验组中参与氨基酸形成与转化的天冬氨酸4-脱羧酶、谷氨酸脱氢酶、天冬氨酸转氨酶和肌氨酸氧化酶以及参与脂肪酸合成的3-氧酰基-[酰基载体蛋白]还原酶和乙酰辅酶A羧化酶丰度较其他试验组有大幅度的增加,且其生物膜合成相关的功能基因丰度也最大,这为发酵系统中挥发性脂肪酸(VFA)的合成提供更多的前体物质,同时也增强了微生物对环境压力的抵抗力和耐受力。

关键词：煤阶厌氧发酵生物甲烷动力学模型代谢功能

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降低缴费率、人口政策调整与经济增长

系统工程理论与实践 2024年第6期44卷 1731-1748页

作者：杨华磊汤小庆范维强中南财经政法大学公共管理学院武汉430073 湖北省创业与就业研究中心武汉430073 华东交通大学经济管理学院南昌330013

面对经济下行的压力,为减轻企业负担,激发经济活力,国家提出降低企业养老保险缴费率方案.为精确回答企业养老保险缴费率下调至16%对未来经济增长的影响,本文采用两部门的动态一般均衡模型,基于现实可行参数进行模拟分析.结果表明:在2019... 详细信息

面对经济下行的压力,为减轻企业负担,激发经济活力,国家提出降低企业养老保险缴费率方案.为精确回答企业养老保险缴费率下调至16%对未来经济增长的影响,本文采用两部门的动态一般均衡模型,基于现实可行参数进行模拟分析.结果表明:在2019–2050年间,若企业养老保险缴费率降至16%,未来历年潜在经济增长率平均提升0.076%,但进一步降低费率的效果趋于减弱;若考虑到降费的多重效应,缴费率下调将对养老保险基金财务状况造成不利影响.鉴于降低缴费率至16%对经济增长的提升效果有限,对养老保险基金财务状况产生负面影响,且进一步下调费率的效果趋于减弱,本文试图寻找推动中国经济增长的其他动力引擎.根据模拟研究,在降低缴费率至16%的背景下,提高生育水平将在短期内轻微降低潜在GDP增长率,但长期将显著提升未来潜在GDP增长率;推进城镇化在短期内提升潜在GDP增长率,但长期效果将减弱;无论是短期还是长期,延迟退休均能提升未来潜在GDP增长率,且逐步延迟退休和即时延迟退休的长期效果趋于一致.

关键词：养老保险缴费率经济增长率动态一般均衡模型

The Study on the Evolution of Urban Spatial Structure in Zhuhai City Based on Spatial Syntax

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Journal of Architectural Research and Development 2024年第4期8卷 40-44页

作者： weiqiang Zhou Fangting Liang School of Architecture and Urban Planning Zhuhai College of Science and TechnologyZhuhai 519000Guangdong ProvinceChina School of Architecture South China University of TechnologyGuangzhou 510641Guangdong ProvinceChina

With the deepening of the Guangdong-Hong Kong-Macao Greater Bay Area strategy and the accelerated integration and development of the east and west sides of the Pearl River Estuary,Zhuhai’s hub position is becoming more and more *** city of Zhuhai has a dense water network and is divided into two urban areas,the east and the west,under the influence of the Mordor Gate *** on the theory of spatial syntax,this paper carries out an analytical study on the urban spatial structure of Zhuhai,identifies the distribution characteristics of urban POIs,and provides theoretical support for the urban development of Zhuhai.

关键词： Spatial syntax POI data Transport network Urban spatial structure

The Earth Summit Mission-2022:Successful ozone soundings contribute to source identification in the north *** region

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Journal of Environmental Sciences 2024年第2期136卷 412-421页

作者： Jinqiang Zhang Chunxiang Ye Yuejian Xuan Zhixuan Bai Weili Lin Dan Li Lingkun Ran Baofeng Jiao YaomingMa weiqiang Ma Nan Yao Yunshu Zeng Daren Lv Tong Zhu Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Environmental Sciences and Engineering Center for Environment and HealthPeking UniversityBeijing 100871China Key Laboratory of Ecology and Environment in Minority Areas(Minzu University of China) National Ethnic Affairs CommissionBeijing 100081China Key Laboratory of Cloud-Precipitation Physics and Severe Storms Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Land-Atmosphere Interaction and Its Climatic Effects Group State Key Laboratory of Tibetan Plateau Earth SystemResources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China College of Atmospheric Science Lanzhou UniversityLanzhou 730000China National Observation and Research Station for Qomolongma Special Atmospheric Processes and Environmental Changes Dingri 858200China Kathmandu Center of Research and Education Chinese Academy of SciencesBeijing 100101China China-Pakistan Joint Research Center on Earth Sciences Chinese Academy of SciencesIslamabad 45320Pakistan Electronic Engineering College Chengdu University of Information TechnologyChengdu 610225China

As part of“The Earth Summit Mission-2022”during the second Tibetan Plateau Scientific Expedition and Research(STEP)in April and May 2022,we conducted the ozone sounding experiment(an ozonesonde mated to a radiosonde)at *** Base Camp(MQBC;86.85°E,28.14°N;5200 m),a location at an extremely high altitude.A total of ten sounding profiles were obtained between April 30 and May 06,2022,of which seven profiles were above35 km in altitude,with a maximum detection altitude up to 39.0 *** study presents the temporal variation and vertical distributions of atmospheric temperature,humidity,and ozone during the MQBC *** averaged ozone concentration was high(68.3 ppbv)at the surface and then increased smoothly until peaking(~110 ppbv)in the middle troposphere(approximately 10 km),and afterward,the ozone concentration increased rapidly from the upper troposphere to a maximum of~10 ppmv at~30 *** enhanced ozone concentration in the middle troposphere was associated with the blocking high pressure,and transport from the southern flank of the Himalayas occurred during the campaign *** average total ozone column was 291.9±21.4 DU for the seven profiles exceeding 35km in *** ozonesonde measurements were also compared with the vertical ozone profiles retrieved from the space-borne ozone products from the Microwave Limb Sounder(MLS)onboard the Aura satellite and the Atmospheric Infrared Sounder(AIRS)onboard the Aqua satellite.

关键词： Ozone soundings Mt.Qomolangma Vertical ozone structure Ozone source Satellite data