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Chinese Journal of Chemistry 2024年第15期42卷 1721-1726页

作者： Hui Zhou Hongmei Jiao Xing Lu Yuanyuan Gao Zhiqiang Ren haojie ma Yuqi Zhang Bo Han Laboratory of New Energy&New Function materials Shaanxi Key Laboratory of Chemical Reaction EngineeringCollege of Chemistry and Chemical EngineeringYan'an UniversityYan'anShaanxi 716000China

Herein,we present a method for the homogeneous hydrogenation of nitroarenes to produce anilines using low catalyst loading(1 mo%)of copper N-heterocyclic carbene complexes as the catalyst and ammonia borane as the source of hydrogen.A wide range of nitroarenes,featuring diverse functional groups,were selectively transformed into their corresponding primary aromatic amines with high *** process can be readily scaled up and exhibits compatibility with various sensitive functional groups,including halogen,trifluoromethyl,aminomethyl,alkenyl,cyano,ester,amide,and ***,this catalytic methodology finds application in the synthesis of essential drug *** investigations suggest that the in-situ-generated Cu-H species may serve as active intermediates,with reduction pathways involving species such as azobenzene,1,2-diphenylhydrazine,nitrosobenzene,and N-phenylhydroxylamine.

关键词： Homogeneous catalysis Hydrogenation N-Heterocyclic carbene complexes Nitroarenes Ammonia borane

Simulation of ion cyclotron wave heating in the EXL-50U spherical tokamak based on dispersion relations

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Plasma Science and Technology 2024年第2期26卷 54-61页

作者：马好杰谢华生李博 School of Physics Beihang UniversityBeijing 100191People's Republic of China Hebei Key Laboratory of Compact Fusion Langfang 065001People's Republic of China ENN Science and Technology Development Co.Ltd. Langfang 065001People's Republic of China

This study investigates the single-pass absorption(SPA) of ion cyclotron range of frequency(ICRF) heating in hydrogen plasma of the EXL-50U spherical tokamak,which is an upgraded EXL-50 device with a central solenoid and a stronger magnetic *** reliability of the kinetic dispersion equation is confirmed by the one-dimensional full-wave code,and the applicability of Porkolab's simplified theoretical SPA model is discussed based on the kinetic dispersion *** are conducted to investigate the heating effects of the fundamental and second harmonic *** results indicate that with the design parameters of the EXL-50U device,the SPA for second harmonic heating is 63%,while the SPA for fundamental heating is 13%.Additionally,the optimal injection frequencies are 23 MHz at 0.9 T and 31 MHz at 1.2 *** wave vector of the antenna parallel to the magnetic field,with a value of k_‖=7.5 m^(-1),falls within the optimal heating *** reveal that the ICRF heating system can play an important role in the ion heating of the EXL-50U.

关键词： ion cyclotron range of frequency single-pass absorption spherical tokamak

A fluorescence-enhanced inverse opal sensing film for multi-sources detection of formaldehyde

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Food Science and Human Wellness 2024年

作者： Xiaokang Lu Bo Han Deyilei Wei Mingzhu Chu haojie ma Ran Li Xueyan Hou Yuqi Zhang JiJiang Wang Key Laboratory of New Energy & New Functional materials， Shaanxi Key Laboratory of Chemical Reaction Engineering， College of Chemistry and Chemical Engineering， Yan’an University

The SiO2inverse opal photonic crystals (PC) with a three-dimensional macroporous structure were fabricated by the sacrificial template method， followed by infiltration of a pyrene derivative， 1-(pyren-8-yl)but-3-en-1-amine (PEA)， to achieve a formaldehyde-sensitive and fluorescence-enhanced sensing film. Utilizing the specific Aza-Cope rearrangement reaction of allylamine of PEA and formaldehyde (FA) to generate a strong fluorescent product emitted at ～480 nm， we chose a PC whose blue band edge of stopband overlapped with the fluorescence emission wavelength. In virtue of the fluorescence enhancement property derived from slow photon effect of PC， FA was detected highly selectively and sensitively. The limit of detection (LoD) was calculated to be 1.38 nmol/L. Furthermore， the fast detection of FA (within 1 min) is realized due to the interconnected three-dimensional macroporous structure of the inverse opal PC and its high specific surface area. The prepared sensing film can be used for the detection of FA in air， aquatic products and living cells. The very close FA content in indoor air to the result from FA detector， the recovery rate of 101.5% for detecting FA in aquatic products and fast fluorescence imaging in 2 min for living cells demonstrate the reliability and accuracy of our method in practical applications.

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智能二维光子晶体水凝胶精准检测Hg^(2+)

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化学学报 2024年第1期82卷 9-15页

作者：史雨晴储名珠韩波马豪杰李然侯雪艳张玉琦王记江延安大学化学与化工学院、陕西省化学反应工程重点实验室、延安市新能源新功能材料重点实验室陕西延安716000

结合二维光子晶体的德拜衍射效应和水凝胶的体积相转变特性,开发了一种智能二维光子晶体水凝胶,用于精准检测Hg^(2+).采用“三明治”法制备了聚苯乙烯二维光子晶体阵列嵌入的聚(丙烯酰胺-烯丙基硫脲)水凝胶.水凝胶链上功能基团的N、O、... 详细信息

结合二维光子晶体的德拜衍射效应和水凝胶的体积相转变特性,开发了一种智能二维光子晶体水凝胶,用于精准检测Hg^(2+).采用“三明治”法制备了聚苯乙烯二维光子晶体阵列嵌入的聚(丙烯酰胺-烯丙基硫脲)水凝胶.水凝胶链上功能基团的N、O、S等原子与Hg^(2+)选择性配位,缩短了水凝胶链之间的距离,增加了水凝胶的交联密度,使其收缩,导致二维光子晶体的聚苯乙烯微球间距缩小,德拜衍射环直径变大.通过监测二维光子晶体水凝胶响应前后的德拜衍射环直径,获知微球间距变化,实现了高灵敏、高选择性、快速、可逆检测Hg^(2+).线性检测范围为10~100nmol/L和25~200μmol/L,最低检测限3.32nmol/L.所制智能二维光子晶体水凝胶已成功应用于化妆品及水样中Hg^(2+)的检测.该方法测试简单,只需激光笔和刻度尺,无需精密的仪器设备,可实现便携式检测,为金属离子检测提供了新思路.

关键词：二维光子晶体德拜衍射效应智能水凝胶体积相转变汞离子

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某既有医院改造工程实践

广东建材 2024年第7期40卷 152-157页

作者：刘恺魏仓显翟高达马豪杰中铁建工集团有限公司

越来越多的城市中心区既有医院建筑面临改造的问题,但国内对城市中心区既有医院相关技术研究较少。番禺区何贤纪念医院由于修建年代较早,已不满足新时代需求,需要对其进行升级改造,以便缓解番禺区医疗资源短缺问题。本文依托番禺区何贤... 详细信息

越来越多的城市中心区既有医院建筑面临改造的问题,但国内对城市中心区既有医院相关技术研究较少。番禺区何贤纪念医院由于修建年代较早,已不满足新时代需求,需要对其进行升级改造,以便缓解番禺区医疗资源短缺问题。本文依托番禺区何贤纪念医院旧建筑改造案例,对改造项目进行系统研究。分析了城市中心区既有医院改造的重难点和解决对策,并对岩溶地层桩基纠偏关键技术和钢结构安装施工关键技术开展研究,形成系统技术体系,并在本工程中得到成功应用,以上研究和成果可供类似改造工程借鉴和应用。

关键词：城市中心区既有医院纠偏钢结构安装

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骨性Ⅱ类伴埋伏牙双期矫正病例1例

口腔医学 2024年第5期44卷 338-343页

作者：郭凯韩欣颖马浩杰刘丽娟杨芳红潍坊医学院口腔医学院山东潍坊261053 潍坊市人民医院口腔正畸科山东潍坊261041

骨性Ⅱ类的患者常表现为上颌前牙前突,下颌后缩,开唇露齿,前牙深覆牙合、深覆盖等症状,严重影响颜面美观。本文报道1例一期早期矫治配合二期固定矫治治疗骨性Ⅱ类伴埋伏牙的生长发育期男性患者病例。治疗后骨性Ⅱ类症状明显改善,包括下... 详细信息

骨性Ⅱ类的患者常表现为上颌前牙前突,下颌后缩,开唇露齿,前牙深覆牙合、深覆盖等症状,严重影响颜面美观。本文报道1例一期早期矫治配合二期固定矫治治疗骨性Ⅱ类伴埋伏牙的生长发育期男性患者病例。治疗后骨性Ⅱ类症状明显改善,包括下颌后缩的改善,开唇露齿问题得到解决,面部外观趋向于直面型,同时颞下颌关节未出现明显异常。该病例显示早期矫正对此类患者可以达到良好的治疗效果,可以避免或减少此类患者成年后正颌手术的可能性。

关键词：骨性Ⅱ类双期矫正埋伏牙 Twin-Block矫治器

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企业会计内部控制建设存在的问题及应对策略

市场周刊 2024年第8期37卷 44-47页

作者：马好杰克拉玛依融进实业发展有限公司新疆克拉玛依834014

现阶段,我国依旧有部分企业缺乏独立的会计部门,也没有拟定相应的会计内部控制制度,导致难以对企业内部的财务核算进行规范化管理和控制,其主要原因便在于一些企业缺乏对会计内部控制的足够重视,导致相关会计信息和数据不够完整准确,难... 详细信息

现阶段,我国依旧有部分企业缺乏独立的会计部门,也没有拟定相应的会计内部控制制度,导致难以对企业内部的财务核算进行规范化管理和控制,其主要原因便在于一些企业缺乏对会计内部控制的足够重视,导致相关会计信息和数据不够完整准确,难以充分发挥会计工作的实际作用。所以,文章对企业会计内部控制相关问题进行了分析,并给出了相应策略,希望能为企业会计内部控制工作的开展提供参考和借鉴。

关键词：会计内部控制执行力经济效益

Discussion on the Beautiful Article View of Zhang Chengzhi's People and Justice as the Core

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Combination therapy of scalp electro-acupuncture and medication for the treatment of Parkinson's disease: A systematic review and meta-analysis

作者： haojie ma Guoping Yang School of Liberal Arts Northwest Minzu University Religious Research Center Shaanxi Normal University School of Foreign Languages Lanzhou City University

The connotation of Zhang Chengzhi's literary view is rich and varied, but the people and justice run through their creations and are always discussed with the view of beauty articles. The beauty article view of the people and justice as the core is not only the embodiment of Zhang Chengzhi's construction of literary ideals, but also the sign of the writer's humanistic responsibility and the feelings of his home country. Thus, it not only enhances the appearance and status of contemporary Hui nationality literature, but also provides experience for national literature and Chinese literature.

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Journal of Traditional Chinese Medical Sciences 2019年第1期6卷 26-34页

作者： Tianyao Qiang Cong Gai Yuan Chai Wandi Feng haojie ma Yi Zhang Jing Feng Zhenyu Guo Ling ma Hongmei Sun School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China Universitélibre de Bruxelles Brussels 1050Belgium

Objective:To summarize the current clinical evidence related to the therapeutic effects and safety of adjuvant scalp electro-acupuncture (SEA) treatment for Parkinson's disease in ***:Following the PRISma statement,seven electronic databases were searched to retrieve randomized controlled clinical trials that used SEA combined with medication as the treatment intervention,and medication as the *** 5.3 was used to analyze outcomes,including the Unified Parkinson's Disease Rating Scale (UPDRS),Webster scale,effectiveness rate,and UPDRS ***:Nine randomized controlled trials,with certain methodological flaws and risks of bias,were included that involved 474 *** combined with medication was more effective than medication alone in overall therapeutic effects,as evidenced by total UPDRS scores (mean difference (MD):7.15,95% confidence interval [CI] 0.24 to 14.07,P =.04),Webster scores (MD:1.60,95% CI 0.20 to 2.99,P =.03),and effectiveness rate (risk ratio:1.35,95% CI 1.19 to 1.54,P may be a promising intervention for patients with Parkinson's disease,especially to improve motor ***,results were inconclusive,and additional studies with rigorous experimental design and larger sample sizes are needed to verify these results.

关键词： Parkinson's disease Scalp electro-acupuncture Unified Parkinson's Disease Rating Scale Motor function

Interfacial Oxygen Octahedral Coupling-Driven Robust Ferroelectricity in Epitaxial Na_(0.5)Bi_(0.5)TiO_(3)Thin Films

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Research 2024年第2期2023卷 149-157页

作者： haojie Han Qinghua Zhang Wei Li Yiqun Liu Jiasheng Guo Yue Wang Qian Li Lin Gu Ce-Wen Nan Jing ma State Key Laboratory of New Ceramics and Fine Processing Schoolof Materials Science and EngineeringTsinghua UniversityBeijing 100084China Beijing National Laboratory for Condensed matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

The oxygen octahedral rotation(OOR)forms fundamental atomic distortions and symmetries in perovskite oxides and definitely determines their properties and ***,epitaxial strain and interfacial structural coupling engineering have been developed to modulate the OOR patterns and explore novel properties,but it is difficult to distinguish the 2 ***,different symmetries are induced in Na_(0.5)Bi_(0.5)TiO_(3)(NBT)epitaxial films by interfacial oxygen octahedral coupling rather than epitaxial *** NBT film grown on the Nb:SrTiO_(3)substrate exhibits a paraelectric tetragonal phase,while with La_(0.5)Sr_(0.5)MnO_(3)as a buffer layer,a monoclinic phase and robust ferroelectricity are obtained,with a remanent polarization of 42μC cm^(-2)and a breakdown strength of 7.89 MV cm^(-1),which are the highest record among NBT-based ***,the interfacial oxygen octahedral coupling effect is demonstrated to propagate to the entire thickness of the film,suggesting an intriguing long-range *** work provides a deep insight into understanding the structure modulation in perovskite heterostructures and an important avenue for achieving unique functionalities.

关键词： effect. interfacial coupling