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Homodispersed B-CN/P-CN S-scheme homojunction for enhanced visible-light-driven hydrogen evolution

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Green Energy & Environment 2022年第5期7卷 1119-1127页

作者： Dashui Yuan zongyuan li Xueru Chen Jing Ding Hui Wan Guofeng Guan State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech UniversityNanjing210009China

Proper interface and band alignment always play essential roles in the separation of photoexcited charge of *** this work,we prepared a homodispersed S-scheme carbon nitride homojunction with local electron structure difference by a facile pre-doping and two-step calcination *** doping into heptazine created extra acceptor impurity,and phosphorus doping into heptazine created extra donor impurity,which eventually modulated the electronic structure of carbon *** heptazines with different element doping were integrated into carbon nitride by recalcination,B-CN and P-CN formed a homodispersed homojunction and thus produced a rich ***,caused by Fermi energy levels equilibrium,the band bending constructed an S-scheme homojunction,which stimulated photogenerated electrons to transfer from CB of B-CN to VB of *** homodispersed S-scheme homojunction structure led to efficient suppression of recombination of photoinduced charge and retained stronger redox ***,the photocatalytic performance was dramatically boosted to 2620 μmol g^(-1) from 60 μmol g^(-1) of pure CN in 4-h hydrogen evolution from *** novel method for electron structure engineering helped to provide a new strategy for designing homojunction photocatalysts with excellent photocatalytic performance.

关键词： dispersed scheme doping

Correlation between slow transit constipation and spleen Qi deficiency, and gut microbiota: a pilot study

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Journal of Traditional Chinese Medicine 2022年第3期42卷 353-363页

作者： YU Zeyue HAO liyu li zongyuan SUN Jianhui CHEN Hongying HUO Hairu li Xiaoqin SHAN Zhongchao li Hongmei Institute of Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing 100007China Jiangsu University Zhenjiang 212013China Yunnan University of Traditional Chinese Medicine Kunming 650504China Jiangxi University of Traditional Chinese Medicine Nanning 330004China

OBJECTIVE:To investigate the effect of slow transit constipation(STC)and spleen Qi deficiency on gut microbiota,and the mechanism underlying the action that the positive drug Maren Runchang(MR)alleviates ***:STC was induced,using the cathartic method of Senna and the hunger-fullness disorder method,in ICR mice;one group of model mice was treated with MR(6.24 g/kg).The changes in the general condition,fecal parameters,D-xylose content in the serum,intestinal propulsion rate,and histopathology of the colon were assessed after STC induction in the control,model,and MR *** microbiota transplantation(FMT)was performed from STC mice into pseudo germ-free *** in the contents of substance P(SP),vasoactive intestinal peptide(VIP),and gut microbiota in STC mice and pseudo germ-free mice were assessed after ***:Compared with the control group,the model mice showed the following results:the time of the first black stool was significantly longer(Plistipes,unclassified_o_Bacteroidales,Alloprevotella,Bilophila,and Anaerotruncus decreased,while the abundance of the conditional pathogenic bacteria Escherichia and Klebsiella ***,after treatment with MR,the time of the first black stool decreased(P<0.01),the number of black stools within 6 h increased,and the intestinal propulsion rate increased(P<0.05).Moreover,the content of D-xylose in the serum and the content of VIP in colon tissue significantly decreased(P<0.05),the conte

关键词： spleen Qi deficiency gastrointestinal microbiome probiotics fecal microbiota transplantation substance P vasoactive intestinal peptide slow transit constipation Maren Runchang pills

One-step fabrication of nitrogen-deficient carbon nitride through pyrolysis of melamine and 1,2,4-triazole for its enhanced photocatalytic degradation

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Green Chemical Engineering 2021年第3期2卷 317-326页

作者： Jing Ding zongyuan li Xueru Chen Yiwei Jiao Dashui Yuan Wei Du Hui Wan Guofeng Guan State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech UniversityNanjing210009China Department of Chemistry&Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan UniversityShanghai200433China

The construction of defects in semiconductor photocatalysts,as a kind of modification methods,plays an indispensable role in the enhancement of the photocatalytic ***,nitrogen defects were successfully introduced into the framework of graphite carbon nitride(CN-T_(x))through thermal polymerization with melamine and 1,2,4-triazole as *** existence of nitrogen defects in CN-T_(x) were confirmed to be located at the two-coordinated(N_(2c))C■N-C lattice sites,which resulted in the destruction of its planar structure and the initiation of n-π^(*)electron transition that greatly expanded the response range to visible light and improved the separation efficiency of photogenerated charge *** significantly,CN-T_(x) could enhance photocatalytic water purification activity towards different kinds of *** photocatalytic rates of CN-T_(3) were estimated to be 2.54(tetracycline)and 2.31(2-hydroxynaphthalene)times higher than those of pristine ***,the possible photocatalytic degradation mechanism over CN-T_(x) photocatalyst was proposed by free radical trapping experiments combined with ERS *** work provides an in-depth understanding of the important role of nitrogen defects in the electronic structure and chemical properties of g-C3N4 and its photocatalytic water purification performance.

关键词： Nitrogen defect Carbon nitride 1,2,4-Triazole Photocatalysis Water purification

Effects of Danggui Wuji granules on 16S rDNA, metagenome, and metabolome in BDS mice

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Science of Traditional Chinese Medicine 2024年第1期2卷 29-36页

作者： Hanhui Huang Yurong Deng Shisheng Chen zongyuan li Xiaomin li Jianhui Sun liyu Hao Zeyue Yu Aoao Wang Jianliang li Hairu Huo Guimin liu Hongmei li Institute of ChineseMateria Medica China Academy of Chinese Medical SciencesBeijingChina Tianjin University of Traditional Chinese Medicine TianjinChina PERFECT Daily Necessities Co LtdZhongshan GuangdongChina

Blood deficiency syndrome(BDS)refers to a pathological state with blood dysfunction and organ dystrophy in traditional Chinese *** Wuji granules(DWG)was developed from a formula containing Angelicae Sinensis Radix and Musculus et Os Galli ***,we investigated the mechanism of DWG in treating BDS by modulating gut *** found that DWG protected mice from BDS by elevating the levels of red blood cell count,hemoglobin,and hematocrit in peripheral blood and increasing the erythrocyte membrane Na+-K+-ATPase *** Wuji granules changed the composition and metabolites of colonic ***,Lactobacillus,Muribaculaceae,and Alistipes were the main genera showing changes after DWG *** findings revealed that DWG presented a positive therapeutic effect on BDS in mice by regulating the gut microbiota and *** protective mechanism of DWG was associated with pathways such as metabolic pathways,biosynthesis of secondary metabolites,ABC transporters,ribosome,thyroid hormone synthesis,lysine degradation,galactose metabolism,tyrosine metabolism,etc.

关键词： Blood deficiency syndrome Danggui Wuji granules 16S rDNA sequencing Metagenome Metabolomics Angelicae Sinensis Radix

维普期刊数据库评论

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中日债务--析战前日本财阀对华经济侵略

抗日战争研究 2009年第2期 87-95页

作者：李宗远中国人民抗日战争纪念馆副研究馆员

美国政府在日本战败之际指出:所有日本财阀是军国主义者,是日本最大的战争潜力,正是由于财阀的存在,才使日本的对外侵略战争和征服成为可能。19世纪末至20世纪初,日本财阀充当日本侵华的急先锋,通过在华设厂,资本输出,逼迫清政府和北洋... 详细信息

美国政府在日本战败之际指出:所有日本财阀是军国主义者,是日本最大的战争潜力,正是由于财阀的存在,才使日本的对外侵略战争和征服成为可能。19世纪末至20世纪初,日本财阀充当日本侵华的急先锋,通过在华设厂,资本输出,逼迫清政府和北洋政府大举借债,产生债务,达到掠夺资源、控制经济命脉和操纵政局的目的,在对华侵略上与日本政府唱"双簧"。

关键词：日本财阀中日债务经济侵略

大热输入焊接用钢的焊接粗晶热影响区韧性提升方法研究

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金属学报 2017年第8期53卷 957-967页

作者：邹宗园许小奎李银潇王超燕山大学先进锻压成形技术与科学教育部重点实验室东北大学轧制技术及连轧自动化国家重点实验室中国人民解放军91315部队

通过研究焊接热影响区(HAZ)冲击功分布图,提出大热输入焊接用钢焊接粗晶热影响区(CGHAZ)韧性提升的新方法,即在峰值温度不变的条件下,将焊接CGHAZ中晶界铁素体(GBF)和大量针状铁素体(AF)组织改变成细晶热影响区(FGHAZ)多边形铁素体(PF)... 详细信息

通过研究焊接热影响区(HAZ)冲击功分布图,提出大热输入焊接用钢焊接粗晶热影响区(CGHAZ)韧性提升的新方法,即在峰值温度不变的条件下,将焊接CGHAZ中晶界铁素体(GBF)和大量针状铁素体(AF)组织改变成细晶热影响区(FGHAZ)多边形铁素体(PF)组织,并消除CGHAZ中破坏韧性的侧板条铁素体(FSP)组织。以对比Ti-V-N与Al-Ti-V-N微合金焊接用钢焊接CGHAZ组织和韧性为基础,探讨了Al-Ti-V-N钢焊接CGHAZ中PF转变条件、形核机制,认为微米级氧化夹杂物是诱导焊接CGHAZ中大量PF形核的关键,纳米级碳氮化物是拖曳、钉扎奥氏体与铁素体晶界的关键,两者的有效配合保证了焊接CGHAZ中大量PF组织生成,从而大幅提升焊接CGHAZ的低温冲击韧性。

关键词：大热输入焊接 CGHAZ AF形核 PF转变韧性

中国共产党工业化思想的战略逻辑——以社会主义革命与建设时期毛泽东论述为中心

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财经研究 2021年第10期47卷 19-34页

作者：伍山林李宗圆上海财经大学经济学院上海200433 上海财经大学中国经济思想发展研究院上海200433

在社会主义革命与建设时期,针对我国国情并且借鉴列宁和斯大林的工业化思想以及苏联工业化经验,毛泽东提出以"三个并举"为主要内容的工业化思想体系。基于首重安全和兼顾发展的战略逻辑,我国选择了重工业优先发展战略。凭借这一战略,我... 详细信息

在社会主义革命与建设时期,针对我国国情并且借鉴列宁和斯大林的工业化思想以及苏联工业化经验,毛泽东提出以"三个并举"为主要内容的工业化思想体系。基于首重安全和兼顾发展的战略逻辑,我国选择了重工业优先发展战略。凭借这一战略,我国到改革开放前建立了独立和比较完整的工业体系,但在工业化过程中存在效率偏低和结构失衡等问题。这种战略逻辑分析有助于理解党和国家领导集体工业化思想的核心要义,有助于把握将农业国转变为工业国的战略方向,有助于说明为什么要对学术界关于工业化战略的一些评论进行历史唯物主义再评论,有助于理解习近平"两个不能否定"的科学论断和从历史中汲取前进的智慧与力量。

关键词：毛泽东工业化重工业优先发展战略计划经济现代化

GEOMETRIC CHARACTERISTICS OF FIBONACCI PERMUTATIONS AND A ONE-DIMENSIONAL LATTICE OF A QUASICRYSTAL

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Chinese Science Bulletin 1987年第22期32卷 1581-1582页

作者：李宗元 Department of Mathematics and Mechanics Beijing University of Iron and Steel Technology

In November of 1984, D. Shechtman et al. obtained the first electron micrograph of a quasicrystal. In the high resolution electron micrograph, the bright dots along any straight line have Fibonacci permutations with t... 详细信息

关键词： micrograph straight Fibonacci bright symbol demon resultant permutation letter replaced

SiO2含量对YSZ陶瓷在高温时效中烧结性的影响

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稀有金属材料与工程 2020年第2期49卷 688-694页

作者：王子媛赵蒙杨军李宗原汪敏潘伟清华大学新型陶瓷与精细工艺国家重点实验室北京100084

研究了SiO2含量对YSZ陶瓷在不同温度下时效后的烧结速率影响,同时研究了其对YSZ时效过程中的结构形貌和性能变化的影响。实验中以正硅酸乙酯(TEOS)为硅源,制备了SiO2含量不同且有约10%气孔的YSZ陶瓷块体,并在不同温度下热处理180 h。通... 详细信息

研究了SiO2含量对YSZ陶瓷在不同温度下时效后的烧结速率影响,同时研究了其对YSZ时效过程中的结构形貌和性能变化的影响。实验中以正硅酸乙酯(TEOS)为硅源,制备了SiO2含量不同且有约10%气孔的YSZ陶瓷块体,并在不同温度下热处理180 h。通过扫描电镜(SEM)表征了样品的微观形貌,并使用阿基米德法测试得到样品气孔率,同时表征了样品高温时效后的相组成、力学及热学性能的变化。通过交流阻抗谱法初步判断了SiO2在YSZ陶瓷晶界上的分布。研究发现,0.3%(质量分数,下同)SiO2的引入将会使YSZ晶粒尺寸变大且气孔率显著降低,同时其硬度、杨氏模量及热导率的变化率明显较未添加SiO2的要快。

关键词： SiO2 YSZ 烧结力学性能