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Homochirality in Ferroelectrochemistry

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Chinese Journal of Chemistry 2024年第10期42卷 1133-1144页

作者： Hang Peng jun-chao qi Yu-Si Liu Jia-Mei Zhang Wei-qiang Liao Ren-Gen Xiong Ordered Matter Science Research Center Nanchang UniversityNanchangJiangxi 330031China

What is the most favorite and original chemistry developed in your research group?We originally proposed the design principle for molecular ferroelectrics:ferroelectrochemistry,including quasi-spherical theory,the introduction of homochirality,and H/F *** changed the blind search for molecular ferroelectrics into targeted chemical design,which will develop into a new discipline.

关键词： Molecular ferroelectrics Homochirality Ferroelectricity Chemical design Point groups

A Z/E isomeric cation designed organic-inorganic cadmium chloride ferroelectric with broadband white-light emission

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Science China Chemistry 2024年第12期67卷 4167-4174页

作者： jun-chao qi Yan qin Hang Peng Hui-Peng Lv Yong-Ju Bai Xin Shen Zhang-Tian Xia Wei-qiang Liao Ordered Matter Science Research Center Nanchang UniversityNanchang 330031China

Hybrid organic-inorganic metal halides(HOMHs)have attracted tremendous interest in the past decades due to their diverse functional properties,such as ferroelectricity and ***,although a large number of ferroelectric HOMHs and luminescent HOMHs have been reported,the HOMH ferroelectrics with white-light emission remain very ***,for the first time,by using the Z/E isomeric organic cation,we designed a cadmium-based HOMH ferroelectric[EE-PMU]CdCl_(4)(EEPMU=pyridin-2-ylmethanamide muconate)with broadband white-light *** contrast to the[ZZ-PMU]CdCl_(4)with centrosymmetric crystal structure at room temperature,[EE-PMU]CdCl_(4)adopts the polar crystal symmetry,which shows piezoelectricity with a piezoelectric coefficient of d33up to 19 pC/N and ferroelectricity with the saturated polarization of 1.52μC/cm^(2).Moreover,[EE-PMU]CdCl_(4)exhibits a broadband white-light emission with an ultra-high color rendering index of 91under UV excitation,which is related to the severely distorted[CdCl_(4)]^(2-)tetrahedron in the *** our knowledge,[EEPMU]CdCl_(4)is the first example of Z/E isomeric cation-designed HOMH ferroelectric and the first cadmium halide white-light emissive *** finding paves a new way for the design of organic-inorganic molecular ferroelectrics with white-light emission.

关键词： organic-inorganic hybrids molecular ferroelectrics ferroelectricity photoluminescence white-light emission

Efficacy and safety of Yiqi Peiyuan granules for improving the short-term prognosis of patients with acute kidney injury:A multicenter,double-blind,placebo-controlled,randomized trial

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Journal of Integrative Medicine 2024年第3期22卷 279-285页

作者： Jia-jia Wu Tian-yi Zhang Ying-hui qi Min-yan Zhu Yan Fang chao-jun qi Li-ou Cao Ji-fang Lu Bo-han Lu Lu-min Tang Jian-xiao Shen Shan Mou Department of Nephrology Molecular Cell Lab for Kidney DiseaseShanghai Peritoneal Dialysis Research CenterUremia Diagnosis and Treatment CenterRenji Hospital Affiliated to Shanghai Jiaotong University School of MedicineShanghai 200127China Department of Nephrology Shanghai Pudong New Area Punan HospitalShanghai 200125China Department of Nephrology Ningbo Hangzhou Bay HospitalNingbo 315336Zhejiang ProvinceChina

Background:Yiqi Peiyuan(YQPY)prescription,a composite prescription of traditional Chinese medicine,has been used to prevent or delay the continued deterioration of renal function after acute kidney injury(AKI)in some institutions and has shown considerable ***:This is the first randomized controlled trial to assess efficacy and safety of YQPY for improving short-term prognosis in adult patients with ***,setting,participants and interventions:This is a prospective,double-blind,multicenter,randomized,and placebo-controlled clinical trial.A total of 144 enrolled participants were randomly allocated to two groups according to a randomization ***,caregivers and investigators assessing the outcomes were blinded to group *** in the YQPY group received 36 g YQPY granules twice a day for 28 *** in the placebo group received a placebo in the same dose as the YQPY *** outcome measures:The primary outcome was the change in the estimated glomerular filtration rate(eGFR)between baseline and after 4 and 24 weeks of *** secondary outcomes were the change of serum creatinine(Scr)level between baseline and after treatment,and the incidence of endpoint events,defined as eGFR increasing by more than 25%above baseline,eGFR>75 mL/min per1.73 m2or the composite endpoint,which was defined as the sum of patients meeting either of the above ***:Data from a total of 114 patients(59 in the YQPY group and 55 in the control group)were *** mean changes in eGFR and Scr in weeks 4 and 24 had no difference between the two *** further subgroup analysis(22 in the YQPY group and 31 in the control group),the mean change in eGFR after treatment for 4 weeks was 27.39 mL/min per 1.73 m2in the YQPY group and 5.78 mL/min per1.73 m2in the placebo group,and the mean difference between groups was 21.61 mL/min per 1.73 m2(P<0.001).Thirteen(59.1%)patients in the YQPY group and 5(16.1%)in the placebo g

关键词： Chinese herbal medicine Randomized controlled trial Acute kidney injury Renal function

Radical–Radical Cross-Coupling Assisted N–S Bond Formation Using Alternating Current Protocol

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CCS Chemistry 2022年第8期4卷 2674-2685页

作者： Yong Yuan jun-chao qi Dao-Xin Wang Ziyue Chen Hao Wan Jing-Yun Zhu Hong Yi Abhishek Dutta Chowdhury Aiwen Lei National Research Center for Carbohydrate Synthesis Jiangxi Normal UniversityNanchang 330022 College of Chemistry and Molecular Sciences Institute for Advanced Studies(IAS)Engineering Research Center of Organosilicon Compounds&Materials(Ministry of Education)Wuhan UniversityWuhanHubei 430072 Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhouGansu 730070

Alternating current(AC)electrolysis is a promising,yet challenging,and under-developed protocol in organic *** achieve as high an atomefficiency as possible and avoid the use of external oxidant,electrochemistry has become a standard organic synthesis ***,an AC-basedprotocol is a superior option than its counterpart,direct current(DC),especially for those reactions that cannot be accomplished by DC.

关键词： alternating current electrolysis anilines thiols cross-coupling reaction N–S bond formation

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高温双向约束条件下石灰岩的组构分析

采矿与安全工程学报 2009年第2期26卷 244-248页

作者：秦本东晁俊奇谌伦建顿志林河南理工大学土木工程学院河南焦作454003 淮南矿业集团有限公司安徽淮南232000 河南理工大学研究生处河南焦作454003

为了研究高温双向约束条件下的石灰岩的组构特征,利用带能谱分析仪的扫描电镜对其化学成分和微观结构进行了测定,结合石灰岩组构、化学成分随温度变化的规律,分析了高温后石灰岩裂纹扩展的原因.试验结果表明,随着温度的升高,石灰岩颜色... 详细信息

为了研究高温双向约束条件下的石灰岩的组构特征,利用带能谱分析仪的扫描电镜对其化学成分和微观结构进行了测定,结合石灰岩组构、化学成分随温度变化的规律,分析了高温后石灰岩裂纹扩展的原因.试验结果表明,随着温度的升高,石灰岩颜色逐渐变浅;300℃后石灰岩试件颗粒间开始出现裂纹,500℃后裂隙呈现贯通状,700℃后有烧结的流体状凝结物出现,800℃后大多数的颗粒已破坏碎裂,并有密集的气孔出现;石灰岩中Ca,Mg元素的含量随温度的升高而增加,C,O的含量远远多于其他元素,试件中含有较多的有机物及其他杂质;石灰岩高温后内部裂纹以沿颗粒边界裂纹为主.

关键词：石灰岩高温双向约束扫描电镜组构

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高温石灰岩膨胀应力的试验研究

中国矿业大学学报 2009年第3期38卷 326-330页

作者：秦本东谌伦建晁俊奇刘希亮长安大学地质工程与测绘学院陕西西安710054 河南理工大学土木工程学院河南焦作454003 河南理工大学材料科学与工程学院河南焦作454003 淮南矿业(集团)有限公司安徽淮南232000

为保证高温过程中岩石工程的稳定性和安全性并解决煤炭地下气化过程中气化炉围岩的维护问题，采用高温加热炉和扫描电子显微镜研究了高温双向约束条件下石灰岩膨胀应力的变化规律．试验结果表明：石灰岩的膨胀应力随温度的增加逐渐增大... 详细信息

为保证高温过程中岩石工程的稳定性和安全性并解决煤炭地下气化过程中气化炉围岩的维护问题，采用高温加热炉和扫描电子显微镜研究了高温双向约束条件下石灰岩膨胀应力的变化规律．试验结果表明：石灰岩的膨胀应力随温度的增加逐渐增大，恒温结束时石灰岩的膨胀应力为刚达到该温度时初始值的1．2～1．7倍；各温度段之间石灰岩膨胀应力和加热温度近似呈线性关系，并且各温度段的曲线斜率逐步增大，恒温60min后膨胀应力趋于各温度水平的稳定值；高温过程中，石灰岩膨胀应力经历了3个阶段：加热升温阶段、恒温膨胀应力增大阶段、膨胀应力稳定阶段；高温过程中石灰岩膨胀应力的变化与其微观结构变化密切相关．

关键词：石灰岩高温双向约束膨胀应力

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配子介导的哺乳动物获得性性状的跨代遗传

生命科学 2017年第1期29卷 8-14页

作者：侍骏超陈琦段恩奎中国科学院动物研究所干细胞与生殖生物学国家重点实验室北京100101 中国科学院大学北京100049

越来越多的证据表明,某些亲代的环境暴露,如化学物质接触、饮食习惯改变、精神刺激等均可以通过DNA序列之外的表观遗传途径"记忆"在配子中,并将亲代获得性性状传递给后代。近年来,有关配子介导的获得性性状跨代遗传的研究正在逐渐升温,... 详细信息

越来越多的证据表明,某些亲代的环境暴露,如化学物质接触、饮食习惯改变、精神刺激等均可以通过DNA序列之外的表观遗传途径"记忆"在配子中,并将亲代获得性性状传递给后代。近年来,有关配子介导的获得性性状跨代遗传的研究正在逐渐升温,使得过去曾被视为异端的"拉马克遗传"学说重新走上了科学舞台,并被认为是今后表观遗传学领域最具挑战、最有意义的研究方向之一。配子中的DNA甲基化、染色质改型及组蛋白修饰,以及非编码RNA均是潜在的表观遗传信息的携带者,深入研究这些表观遗传信息携带与传递规律,将为阐明配子介导的跨代遗传分子机制提供重要的理论依据。

关键词：获得性性状跨代传递表观遗传修饰配子

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朱集矿千米深井巷道支护与加固技术

煤矿开采 2010年第3期15卷 64-66页

作者：晁俊奇乔长灿戚彦贵淮南矿业集团朱集矿井建设项目部安徽淮南232087

对朱集矿千米深井软岩巷道的支护形式进行了研究,通过对锚网喷索注联合支护的机理、锚网喷索联合支护下巷道的破坏原因的分析,以及通过对巷道注浆、架棚加固效果的分析,并结合巷道收敛位移监测结果、巷道破坏形态观测,得出千米深井软岩... 详细信息

对朱集矿千米深井软岩巷道的支护形式进行了研究,通过对锚网喷索注联合支护的机理、锚网喷索联合支护下巷道的破坏原因的分析,以及通过对巷道注浆、架棚加固效果的分析,并结合巷道收敛位移监测结果、巷道破坏形态观测,得出千米深井软岩巷道仅仅采用锚网喷索联合支护方式不能适应高应力软岩巷道压力和变形的需要,必须再进行注浆加固。

关键词：千米深井软岩巷道锚网喷索注(架)支护破坏机理

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履带自走式园林剩余物粉碎装置设计与试验

沈阳农业大学学报 2023年第6期54卷 722-731页

作者：刘德军晁浚淇苏俊锋邱硕沈阳农业大学工程学院沈阳110161

针对目前园林剩余物资源浪费,收集加工机械设备研究不足的问题,设计了一款履带自走式园林剩余物收集粉碎装置,对其关键部件粉碎刀辊进行结构受力分析基础上,利用EDEM软件对粉碎过程进行仿真试验,分析了主轴转速、动刀与定刀间隙、动刀... 详细信息

针对目前园林剩余物资源浪费,收集加工机械设备研究不足的问题,设计了一款履带自走式园林剩余物收集粉碎装置,对其关键部件粉碎刀辊进行结构受力分析基础上,利用EDEM软件对粉碎过程进行仿真试验,分析了主轴转速、动刀与定刀间隙、动刀安装偏置角度、刀片数量等参数对粉碎粒度标准差和粉碎效率的影响规律,最终选择主轴转速、动刀与定刀的间隙、动刀安装偏置角度、刀片数量为主要试验因素,设计了L25(56)四因素五水平混合正交试验,获得影响粉碎效率和粉碎粒度标准差的关键参数。结果表明:影响树木枝条粉碎粒度标准差的主要试验因素是动刀与定刀间隙,其次是动刀安装偏置角度,然后是主轴转速和刀片数量;而影响粉碎效率的主要因素是主轴转速,其次是刀片数量,最后是动刀安装偏置角度和动定刀间隙。根据不同的粉碎目的要求,最终确定优化方案为主轴转速2 400 r·min^(-1),单刃偏锋45°刀,安装偏置角度为10°,动刀与定刀的最小间隙为8~10 mm。根据优化参数加工制作试验样机,最终获得该装置对不同含水率不同直径的枝条粉碎效率为424~1 260 kg·h^(-1),粉碎粒度标准差为3.44~4.56,耗油量最低为7.41 L·t^(-1)等参数,该装置可为园林剩余物收集粉碎装置的设计和生产提供参考。

关键词：园林剩余物树木枝条收集粉碎粉碎刀辊

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