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A Binder-Free Amorphous Manganese Dioxide for Aqueous Zinc-Ion Battery

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Journal of Materials Science and Chemical Engineering 2022年第6期10卷 13-18页

作者： Qianqian Yu guojiang wu Hefei No. 6 High School Hefei China Institute of Plasma Physics Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei China

Aqueous zinc-ion battery has attracted much attention due to its low price, high safety, and high theoretical specific capacity. However, most of their performances are limited by the unsatisfied architecture of cathodes. Herein, we fabricated amorphous manganese dioxide by an in situ deposition method. The amorphous manganese dioxide can directly serve as the cathode of an aqueous zinc-ion battery without a binder. The resultant cathode exhibits a high specific capacity of 133.9 mAh/g at 200 mA/g and a capacity retention of 82% over 50 cycles at 1 A/g.

关键词： Binder-Free Amorphous Manganese Dioxide Aqueous Zinc-Ion Battery

Using Riccati Equation to Construct New Solitary Solutions of Nonlinear Difference Differential Equations

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American Journal of Computational Mathematics 2022年第2期12卷 256-266页

作者： Xinxiang Liu Kaiwen Cui guojiang wu Hefei Thomas School Hefei China The Second High School Attached to Beijing Normal University International Department Beijing China Institute of Plasma Physics Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei China

In this paper, we use Riccati equation to construct new solitary wave solutions of the nonlinear evolution equations (NLEEs). Through the new function transformation, the Riccati equation is solved, and many new solitary wave solutions are obtained. Then it is substituted into the (2 + 1)-dimensional BLMP equation and (2 + 1)-dimensional KDV equation as an auxiliary equation. Many types of solitary wave solutions are obtained by choosing different coefficient p1 and q1 in the Riccati equation, and some of them have not been found in other documents. These solutions that we obtained in this paper will be helpful to understand the physics of the NLEEs.

关键词： Nonlinear Evolution Equations Hyperbolic Function Riccati Equation Auxiliary Equation Solitary Wave Solutions

NUMERICAL SIMULATION OF EFFECTS OF WALL THICKNESS AND CELL DENSITY ON THE THREE-WAY CATALYTIC CONVERTER PERFORMANCE

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Chinese Journal of Mechanical Engineering 2005年第4期18卷 617-622页

作者： wu guojiang Tan Song Huang Zhen School of Mechanical Engineering Shanghai Jiaotong University Shanghai 200030 China

The transient symmetric mathematical model is established, and the effects of the wall thickness and cell density on the performance of a three-way catalytic converter are studied using numerical modeling. The conclusions show that the light-off time and the pressure drop through a converter are decreased, and the conversion efficiency during the warm-up period keeps almost invariant with reduction of the wall thickness of substrates, and that the pressure drop through a converter and a conversion efficiency during the warm-up state increases, and the light-off time almost keeps invariant when increasing cell density of substrates. Therefore, future catalytic converters should develop in the direction of thin wall thickness and high cell density substrates simultaneously.

关键词： Numerical simulations Advanced catalytic converter Emissions

Chemical constituents from leaves of Jatropha curcas

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Chinese Herbal Medicines 2023年第3期15卷 463-469页

作者： Yingjie Wang Di Zhou Xiaolin Bai Qingqi Meng Haihui Xie guojiang wu Gang Chen Yue Hou Ning Li School of Traditional Chinese Materia Medica Key Laboratory of Innovative Traditional Chinese Medicine for Major Chronic Diseases of Liaoning ProvinceKey Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang CityShenyang Pharmaceutical UniversityShenyang 110016China Tasly Northeast Modern TCM Resources Co. Ltd.Benxi 117204China College of Life and Health Sciences Northeastern UniversityShenyang 110004China South China Botanical Garden Chinese Academy of SciencesGuangzhou 510650China

Objective:To investigate the chemical constituents from the leaves of Jatropha curcas and evaluate their inhibition on lipopolysaccharide(LPS)-activated BV-2 microglia ***:The n-BuOH extract of the leaves of *** was isolated by macroporous adsorption resin,silica gel,ODS,column chromatography and semi-preparative *** structures of the compounds were identified by MS,NMR,ECD,and other spectroscopic *** addition,anti-neuroinflammatory effects of isolated compounds were evaluated by measuring the production of nitric oxide(NO)in overactivated BV-2 ***:Seventeen compounds,including(7R,8S)-crataegifin A-4-O-β-D-glucopyranoside(1),(8R,8’R)-arctigenin(2),arctigenin-4’-O-β-D-glucopyranoside(3),(-)-syringaresinol(4),syringaresinol-4’-O-β-Dglucopyranoside(5),(-)-pinoresinol(6),pinoresinol-4’-O-β-D-glucopyranoside(7),buddlenol D(8),(2R,3R)-dihydroquercetin(9),(2S,3S)-epicatechin(10),(2R,3S)-catechin(11),isovitexin(12),naringenin-7-O-β-D-glucopyranoside(13),chamaejasmin(14),neochamaejasmin B(15),isoneochamaejasmin A(16),and tomentin-5-O-β-D-glucopyranoside(17)were isolated and *** 2,4and 8 significantly inhibited the release of NO in BV-2 microglia activated by LPS,with IC50values of18.34,29.33 and 26.30μmol/L,***:Compound 1 is a novel compound,and compounds 2,3,8,14–17 are isolated from Jatropha genus for the first *** addition,the lignans significantly inhibited NO release and the inhibitory activity was decreased after glycosylation.

关键词： anti-neuroinflammation flavonoid Jatropha curcas L. lignans

Overexpression of SGR Results in Oxidative Stress and Lesion-mimic Cell Death in Rice Seedlings

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Journal of Integrative Plant Biology 2011年第5期53卷 375-387页

作者： Huawu Jiang Yaping Chen Meiru Li Xingian Xu guojiang wu Key Laboratory of-Plant Resou-rces Conservation and Sustainable Utilization South China Botanical Garden Chinese Academyof Sciences Guangzhou 510650 China

It is thought that the Stay Green Rice （SGR） gene is involved in the disaggregation of the light harvesting complex and in the subsequent breakdown of chlorophyll and apo-protein during senescence. In this study, we found that overexpression of SGR （Ov-SGR） resulted in the generation of singlet oxygen and other reactive oxygen species and produced a chlorophyll-dependent regional cell death phenotype on leaves of rice seedlings. Transcriptome analyses using Affymetrix Rice GeneChips revealed that Ov-SGR rice seedlings exhibited a number of signs of singlet oxygen response. The genes and their associated biochemical pathways identified provide an insight into how rice plants respond to singlet oxygen at the molecular and physiologic level.

关键词： Rice Genes Lymphocytes Seedlings Chlorophylls Oxygen

内蒙古自治区高粱登记品种农艺性状及品质综合评价

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江苏农业科学 2024年第1期52卷 83-92页

作者：吴国江周伟余忠浩刘慧李昊卢顺丽刘祯源郭威宏周亚星内蒙古民族大学科尔沁沙地生态农业国家民委重点实验室内蒙古通辽028000 内蒙古工程项目管理有限公司内蒙古呼和浩特010000

为探究内蒙古自治区高粱品种的特点,客观评价高粱品系,对内蒙古登记的92个高粱品种的13个主要农艺性状进行变异分析、主成分分析、隶属函数法、聚类分析和同异分析。结果表明,92个品种的13个性状变异系数在4.01%~56.66%之间。通过主成... 详细信息

为探究内蒙古自治区高粱品种的特点,客观评价高粱品系,对内蒙古登记的92个高粱品种的13个主要农艺性状进行变异分析、主成分分析、隶属函数法、聚类分析和同异分析。结果表明,92个品种的13个性状变异系数在4.01%~56.66%之间。通过主成分分析,将92个品种的农艺和品质性状综合成为9个相互独立的综合指标(主成分值),这9个主成分值的累计贡献率达88.119%,再将各主成分得分值和贡献率进行计算,求出其综合评价D值,基于D值采用欧氏距离及类平均法将92个品种分为四大类:第Ⅰ类具有长生育期、株高较高、穗粒质量和千粒质量较大的特点;第Ⅱ类具有株高适中、支链淀粉含量适中、穗粒质量较大的特点;第Ⅲ类具有生育期相对较长、总淀粉含量相对较高、粗脂肪含量较低的特点;第Ⅳ类具有株高较低、生育期相对较短、穗粒质量较小、总淀粉含量和单宁含量适中、抗病性一般的特点。将同异分析法求出的联系度μ(W)与综合评价D值相结合,从92个品种中选出7个综合性状优良的品种,通过对这些品种的筛选,以期为今后内蒙古地区高粱育种目标的科学确立及品种推广提供参考。

关键词：内蒙古高粱品种农艺性状品质隶属函数法同异分析法

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Knockdown of LjALD1, AGD2‐like defense response protein 1, influences plant growth and nodulation in Lotus japonicus

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Journal of Integrative Plant Biology 2014年第11期56卷 1034-1041页

作者： Wei Chen Xueliu Li Lu Tian Pingzhi wu Meiru Li Huawu Jiang Yaping Chen guojiang wu Key Laboratory of Plant Resources Conservation and Sustainable Utilization South China Botanical Gardenthe Chinese Academy of Sciences University of Chinese Academy of Sciences

The discovery of the enzyme L,L‐diaminopimelate aminotransferase（LL‐DAP‐AT, EC 2.***.1.83） uncovered a unique step in the L‐lysine biosynthesis pathway in plants. In Arabidopsis thaliana, LL‐DAP‐AT has been shown to play a key role in plant‐pathogen interactions by regulation of the salicylic acid（SA） signaling pathway. Here, a full‐length cDNA of LL‐DAP‐AT named as LjALD1 from Lotus japonicus（Regel）Larsen was isolated. The deduced amino acid sequence shares 67% identity with the Arabidopsis aminotransferase AGD2‐LIKE DEFENSE RESPONSE PROTEIN1（AtALD1） and is predicted to contain the same key elements： a conserved aminotransferase domain and a pyridoxal‐5＇‐phosphate cofactor binding *** real‐time PCR analysis showed that LjALD1 was expressed in all L. japonicus tissues tested, being strongest in nodules. Expression was induced in roots that had been infected with the symbiotic rhizobium Mesorhizobium loti or treated with SA agonist benzo‐（1, 2, 3）‐thiadiazole‐7‐carbothioic Researchacid. LjALD1 Knockdown exhibited a lower SA content, an increased number of infection threads and nodules, and a slight reduction in nodule size. In addition, compared with wild‐type,root growth was increased and shoot growth was suppressed in LjALD1 RNAi plant lines. These results indicate that LjALD1 may play important roles in plant development and nodulation via SA signaling in L. japonicus.

关键词： L L-diaminopimelate aminotransferase Lotus japonicus nodulation plant development

MnO2Nanosheets Anchored on a Biomass-Derived Porous Carbon for High-Performance Supercapacitors

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Open Journal of Energy Efficiency 2021年第3期10卷 73-80页

作者： Xiangyu Ding guojiang wu Hefei No. 8 High School Hefei China Institute of Plasma Physics Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei China

Considering the great potential of composite electrode with carbon and transition metal oxides as a future ideal form of electrode for future energy storing system, many efforts have been devoted into such aspect of research. Sweet potato-derived carbon framework with nanosheet form of MnO2 anchored on it was carried out through the low-temperature solution grown technique, which is simple, low-cost, and applicable for large-scale commercial production. Such form of composite electrode can facilitate the inner transportation of electrons and ions, and offer high specific capacitance (309 F/g at 0.5 A/g) with comparable discharging rate capability (94 F/g at 20 A/g), which reasonably can be regarded as a superior form of composite electrode.

关键词： Composite Electrode MnO2 Sweet Potato Biomass Supercapacitors

Porous Carbon from Corn Flour Prepared by H3PO4Carbonization Combined with KOH Activation for Supercapacitors

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Journal of Power and Energy Engineering 2021年第8期9卷 18-25页

作者： Xinyang Li guojiang wu Hefei No.8 High School Hefei China Institute of Plasma Physics Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei China

Hierarchical porous activated carbon is a superior material in manufacturing supercapacitors. However, the hierarchical porous structure is hard to obtain from a single activation method. This work was carried out with the anticipation of producing activated carbon by reactivating corn flour with KOH. By employing the electrodes, the supercapacitor demonstrated a high discharge capacitance (151.2 F·g-1 at 1 A·g-1), and the specific capacitance is with 3.7 times more capacitance than the activated carbon only through H3PO

关键词： Activated Carbon Hierarchical Porous Reactivating Corn Flour Supercapacitors