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Four unprecedented V_(14)clusters as highly efficient heterogeneous catalyst for CO_(2)fixation with epoxides and oxidation of sulfides

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Science China Chemistry 2023年第1期66卷 107-116页

作者： Ji-Lei wang jia-Peng Cao Yin-hua Zhu Qin wang Ning-Fang Li Xin-Rong Fan hua Mei Yan Xu State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing210009China State Key Laboratory of Coordination Chemistry Coordination Chemistry InstituteNanjing UniversityNanjing 210093China

Chemical fixation of carbon dioxide(CO_(2))is an energy-saving method for alleviating the greenhouse gas emissions,whereas it persists a challenge posed by the demand for efficient ***,four unprecedented examples of tetradecanuclear vanadium clusters,namely,[(C_(2)H_(8)N_(2))6(CH_(3)O)8(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)](V_(14)-1),[(C_(3)H_(10)N_(2))_(6)(CH_(3)O)_(8)(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)](V14^(-2)),[(C_(6)H_(14)N_(2))6(CH_(3)O)8(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)]·5H_(2)O(V14^(-3))and[(C_(4)H_(12)N_(2)O)_(4)(C_(4)H_(11)N_(2)O)_(2)(CH_(3)O)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(28)]·6H_(2)O(V_(14)-4),have been triumphantly designed and constructed under solvothermal *** them,compounds V_(14)-1–4 are the first cases of tetradecanuclear vanadium clusters without the introduction of inorganic acid radical *** main units[V_(10)^(Ⅳ)V_(4)ⅤO_(26)]8+and[V10ⅣV4ⅤO28]4+represent brand-new configurations of tetradecanuclear vanadium *** the fact that the presence of V^(Ⅳ)/V^(Ⅴ)can potentially facilitate electron transfer and consequently expedite catalytic reactions,we explored the catalytic activities of these ***,V_(14)-1 was further used as a heterogeneous catalyst in the CO_(2)fixation into cyclic carbonates under milder conditions(60℃,0.5 MPa)and exhibited higher catalytic ***,the experimental results indicated that V_(14)-1 could efficiently catalyze the sulfoxidation,which could fully convert most sulfides within 40 min at room ***,as a stable heterogeneous catalyst employed in CO_(2)fixation with epoxides and oxidation of sulfides,V_(14)-1 could be consecutively used multiple cycles without losing its catalytic activity.

关键词： V_(14)clusters heterogeneous catalyst CO_(2)fixation oxidation of sulfides

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普通延迟焦化装置生产动力类负极焦研究

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石油炼制与化工 2025年第1期56卷 117-122页

作者：王慧党建军花飞中海油惠州石化有限公司广东惠州516086

随着锂离子电池负极材料行业的高速增长,其对石油焦原料的需求量越来越大,传统炼油厂如果能利用现有延迟焦化装置生产满足负极材料要求的焦原料,将是提质增效的有效途径。动力类电池要求负极材料能够实现高克容量、高倍率等性能,相应地... 详细信息

随着锂离子电池负极材料行业的高速增长,其对石油焦原料的需求量越来越大,传统炼油厂如果能利用现有延迟焦化装置生产满足负极材料要求的焦原料,将是提质增效的有效途径。动力类电池要求负极材料能够实现高克容量、高倍率等性能,相应地要求负极材料焦原料有高比例的纤维结构和区域结构,这与焦化过程中碳质中间相的形成与生长密切相关。普通延迟焦化装置生产动力类负极焦需从原料和工艺条件两方面寻找改善途径,如掺炼催化裂化油浆,采用低反应温度、高焦化压力、大循环比、长生焦时间操作,并应对上下游衔接、加工效益评估、全厂物料平衡和维持石油焦品质稳定等方面的挑战。

关键词：负极材料石油焦碳质中间相焦化

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Locking system strengthened by biomimetic mineralized collagen putty for the treatment of osteoporotic proximal humeral fractures

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Regenerative Biomaterials 2017年第5期4卷 289-294页

作者： Cheng Peng Hai-Peng wang jia-hua Yan Tian-Xi Song Department of Orthopaedics Jing’an District Centre HospitalJing’an BranchHuashan Hospital Affiliated to Fudan UniversityShanghai 200040China Beijing Allgens Medical Science and Technology Co. Ltd.Beijing 100176China

The current study is to observe the effect of the locking system strengthened by biomimetic mineralized collagen putty for the treatment of senile proximal humeral osteoporotic *** January 2012 to December 2015,80 cases of senile patients with osteoporotic proximal humeral fractures were randomly divided into an observation group and a control group,each group with a total of 40 *** control group was simply treated with locking *** observation group was treated with locking plate in combination with biomimetic mineralized collagen *** therapeutic effect thereby was *** excellent and satisfactory rate was 90%in observation group and was 72.5%in control *** difference between the two groups was statistically significant(χ^(2)=5.3312,P<0.05).The fracture healing time was 11.8263.62 weeks in observation group and 19.7865.46 weeks in control *** shoulder joint function score was 89.6368.12 in observation group and 76.9268.18 in control *** was significant difference between the two groups(t=7.1272;12.7834,P<0.05).The complication rate was 10%in the observation group and 32.5%in the control group(χ^(2)=7.3786,P<0.05).Locking system strengthened by biomimetic mineralized collagen putty has advantages such as accelerating healing of senile proximal humeral fracture,improving the therapeutic effect,reducing the *** one of the optimal internal fixation method,it provides a new option for better treatment of senile osteoporotic fracture.

关键词： mineralized collagen putty osteoporosis proximal humeral fracture locking system

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Fracture toughness and fracture behavior of SA508-Ⅲ steel at different temperatures

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International Journal of Minerals,Metallurgy and Materials 2014年第12期21卷 1187-1195页

作者： jia-hua Liu Lei wang Yang Liu Xiu Song Jiong Luo Dan Yuan Key Laboratory for Anisotropy and Texture of Materials Northeastern University

The fracture toughness of SA508-Ⅲ steel was studied in the temperature range from room temperature to 320℃ using the J-integral method. The fracture behavior of the steel was also investigated. It was found that the conditional fracture toughness （JQ） of the steel first decreased and then increased with increasing test temperature. The maximum and minimum values of do were 517.4 kJ/m^2 at 25℃ and 304.5 kJ/m^2 at 180℃, respectively. Dynamic strain aging （DSA） was also observed to occur when the temperature exceeded 260℃ with a certain strain rate. Both the dislocation density and the number of small dislocation cells effectively increased because of the occurrence of DSA; as a consequence, crack propagation was more strongly inhibited in the steel. Simultaneously, an increasing number of fine carbides precipitated under high stress at temperatures greater than 260℃. Thus, the deformation resistance of the steel was improved and the Jo was enhanced.

关键词： low alloyed steel fracture toughness fracture behavior temperature dynamic strain aging nuclear power plants

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Effects of H content on the tensile properties and fracture behavior of SA508-Ⅲsteel

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International Journal of Minerals,Metallurgy and Materials 2015年第8期22卷 820-828页

作者： jia-hua Liu Lei wang Yang Liu Xiu Song Jiong Luo Dan Yuan Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education) Northeastern University

SA508-Ⅲ steel was charged with different hydrogen(H) contents using a high-pressure thermal charging method to study the effects of H content on the tensile properties and evaluate the H embrittlement behavior of the steel. The results indicate that the ultimate tensile strength remains nearly unchanged with the addition of H. In contrast, the yielding strength slightly increases, and the elongation significantly decreases with increasing H content, especially at concentrations exceeding 5.6 × 10-6. On the basis of fractographic analysis, it is clear that the addition of H changes the fracture mode from microvoid coalescence to a mixture of river patterns and dimples. Carbides are strong traps for H; thus, the H atoms easily migrate in the form of Cottrell atmosphere toward the carbides following moving dislocations during tensile deformation. In addition, stress-induced H atoms accumulate at the interface between carbides and the matrix after necking under three-dimensional stress, which weakens the interfacial bonding force. Consequently, when the local H concentration reaches a critical value, microcracks occur at the interface, resulting in fracture.

关键词： stainless steel tensile properties fracture hydrog

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Antioxidant activity of polyaniline nanofibers

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Chinese Chemical Letters 2007年第8期18卷 1005-1008页

作者： jia wang Li hua Zhu Jing Li He Qing Tang Department of Chemistry and Chemical Engineering Hubei Key laboratory of Bioinorganic Chemistry and Materia Medica Huazhong University of Science and Technology Wuhan 430074 China

Well-confined uniform polyaniline （PANI） nanofibers were synthesized by using photo-assisted chemical oxidative polymer- ization of aniline in the presence of different dopant acids, and the radical scavenging ability of the produced PANI nanofibers was determined by the DPPH assay. It was found that the antioxidant activity of PANI nanofibers was higher than conventional PANI, and increased with decreasing of averaged diameter of the nanofibers. The enhanced antioxidant activity was concerned with increased surface area of PANI nanofibers.

关键词： Polyaniline nanofibers Dopant acids Antioxidant activity DPPH radical

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Identification and Characterization of Cotton Genes Involved in Fuzz-Fiber Development

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Journal of Integrative Plant Biology 2013年第7期55卷 619-630页

作者： Gaskin wang Guo-Hong Zhao Yin-hua jia Xiong-Ming Du State Key Laboratory of Cotton Biology Institute of Cotton Research of the Chinese Academy of Agricultural Sciences

Cotton fuzz fibers, like Arabidopsistrichomes, are elongated unicells. It is postulated that a transcriptional complex of GLABRA1 （GL1）, GLABRA3 （GL3）, and TRANSPARENT TESTAGLABRA1 （TTG1） might be in existence in Arabidopsis as evidenced by their physical interaction in yeast, and the complex regulates expression of GLABRA2 （GL2） controlling trichome cell differentiation; it is also assumed that TRIPTYCHON （TRY） and CAPRICE （CPC） counteract the complex formation in neighboring cells. Here, the homologs GaMYB23 （a homolog of GL1）, GaDEL65 （a homolog of GL3）, GaTTG1, GaCPC and GaTRY were identified in Gossypium arboreum. We show that GaMYB23 can bind to and activate the promoters of GaCPC, GaGL2 and GaTRY, and that GaMYB23, GaTRY and GaTTG1 could interact with GaDEL65 in yeast and in planta. In situ analysis showed that GaMYB23, GaGL2, GaDEL65, and GaTRY were predominantly expressed in fuzz fiber, but GaTRY proteins were primarily found in undeveloped epidermal cells. A G. arboreum fuzzless mutant with consistently high level GaMYB23 transcript has lost the detectable GaMYB23-promoter of GaGL2 complex, corresponding to sharply reduced transcription of GaGL2. Our results support that cotton homologs to the genetic molecules regulating Arabidopsis trichome differentiation interacted in the epidermis of ovules and the redundant GaMYB23 serves as a negative regulator in fuzz-fiber patterning.

关键词： Convergent evolution fuzz, fuzzless mutant Gossypium arboreum lateral inhibitor trichome.

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Combined application of Trichoderma harzianum SH2303 and difenoconazole-propiconazolein controlling Southern corn leaf blight disease caused by Cochliobolus heterostrophus in maize

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Journal of Integrative Agriculture 2019年第9期18卷 2063-2071页

作者： wang Shao-qing MA jia wang Meng wang Xin-hua LI Ya-qian CHEN Jie School of Agriculture and Biology Shanghai Jiao Tong UniversityShanghai 200240P.R.China Key Laboratory of Urban Agriculture(South)Ministry of Agriculture Shanghai Jiao Tong UniversityShanghai 200240P.R.China State Key Laboratory of Microbial Metabolism Shanghai Jiao Tong UniversityShanghai 200240P.R.China Plant Genetic Engineering Center of Hebei Province Institute of Genetics and PhysiologyHebei Academy of Agriculture and Forestry SciencesShijiazhuang 050051P.R.China

Southern corn leaf blight(SCLB)disease caused by Cochliobolus heterostrophus is one of the major threats to corn production *** synergistic application of low toxic chemical fungicide and biocontrol agents could improve biocontrol stability and efficiency against plant diseases,which ultimately reduce use of chemical *** spp.,well-known biocontrol fungi have been used to control some foliar ***,few works have been reported on synergistic application of chemical fungicide and Trichoderma against foliar *** study was aimed to investigate the control effect on the synergistic application of Trichoderma harzianum SH2303 and difenoconazole-propiconazole(DP)against *** showed that the synergistic application of DP and SH2303 reduced the leaf spot area compared to the *** efficacy of synergistic application of DP+SH2303 against SCLB could last for 15–20 d in pot trial under the greenhouse *** the natural field condition,maize treated with DP+DP and DP+SH2303 showed 60%control,which was higher than that of SH2303+DP(45%)and SH2303+SH2303(35%).All these treatments induced the synthesis of defense-related enzymes(phenylalanine ammonia lyase(PAL),catalase(CAT),and superoxide dismutase(SOD))and the defence-related gene expression of SA pathway(PR1).Taken together the in-vitro leaf test and field trial,the control of SCLB by synergistic application of DP+SH2303 was similar to that of DP+*** synergistic application,the sequential application of DP+SH2303 showed better control than the sequential application of SH2303+*** was concluded that the synergistic application of chemical fungicide(DP)and biocontrol agent(*** SH2303)could be used to reduce the chemical fungicide and to reduce the SCLB diseases in maize,which provided alternative approach to realize an eco-friendly controlling of the foliar disease.

关键词： synergistic bio-control chemical fungicide Trichoderma harzianum maize leaf spot disease

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Molecular Cloning, and Characterization of an Adenylyl Cyclase-Associated Protein from Gossypium arboreum L.

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Agricultural Sciences in China 2009年第7期8卷 777-783页

作者： wang Sheng ZHAO Guo-hong jia Yin-hua DU Xiong-ming Cotton Germplasm Division Cotton Research Institute Chinese Academy of Agricultural Sciences Anyang 455000 P.R.China

The aim of this study was to clone CAP （adenylyl cyclase-associated protein） gene from Gossypium arboreum L. and develop a platform for expressing and purifying CAP protein, which is a base for the construction and function researches of CAP. In this work, a CAP homolog from cotton （DPL971） ovule was identified and cloned. And the cDNA sequence consisted of an open reading frame of 1 416 nucleotides encoding a protein of 471 amino acid residues with a calculated molecular weight of 50.6 kDa. To gain insight on the CAP role in cotton fiber development, the cloned CAP cDNA was expressed. A significant higher yield pure protein was obtained with the chromatographic method. Further experiments showed that the purified protein can bind with the actin in vitro indicating that the recombinant cotton CAP is functional. The procedure described here produced high yield pure protein through one chromatographic step, suitable for further structure-function studies.

关键词： adenylyl cyclase-associated protein CAP cotton fiber protein expression protein purification Gossypiumarboreum L.

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Prediction of cutting power and surface quality, and optimization of cutting parameters using new inference system in high-speed milling process

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Advances in Manufacturing 2021年第3期9卷 388-402页

作者： Long-hua Xu Chuan-Zhen huang jia-Hui Niu Jun wang Han-Lian Liu Xiao-Dan wang Center for Advanced Jet Engineering Technologies Key Laboratory of High-efficiency and Clean Mechanical Manufacture(Ministry of Education)National Experimental Teaching Demonstration Center for Mechanical Engineering(Shandong University)School of Mechanical EngineeringShandong UniversityJinanPeople’s Republic of China School of Mechanical and Manufacturing Engineering The University of New South Wales(UNSW)SydneyNSW2052Australia Department of Computer Science and Software Engineering Xi’an Jiaotong-Liverpool UniversitySuzhou215123JiangsuPeople’s Republic of China

During the actual high-speed machining process,it is necessary to reduce the energy consumption and improve the machined surface ***,the appropriate prediction models and optimal cutting parameters are difficult to obtain in complex machining ***,a novel intelligent system is proposed for prediction and optimization.A novel adaptive neuro-fuzzy inference system(NANFIS)is proposed to predict the energy consumption and surface *** the NANFIS model,the membership functions of the inputs are expanded into:membership superior and membership *** membership functions are varied based on the machining *** inputs of the NANFIS model are cutting parameters,and the outputs are the machining *** optimization,the optimal cutting parameters are obtained using the improved particle swarm optimization(IPSO)algorithm and NANFIS ***,the IPSO algorithm as a learning algorithm is used to train the NANFIS *** proposed intelligent system is applied to the high-speed milling process of compacted graphite *** experimental results show that the predictions of energy consumption and surface roughness by adopting the NANFIS models are up to 91.2%and 93.4%,*** NANFIS models can predict the energy consumption and surface roughness more accurately compared with other intelligent *** on the IPSO algorithm and NANFIS models,the optimal cutting parameters are obtained and validated to reduce both the cutting power and surface roughness and improve the milling *** is demonstrated that the proposed intelligent system is applicable to actual high-speed milling processes,thereby enabling sustainable and intelligent manufacturing.

关键词： Novel adaptive neuro-fuzzy inference system(NANFIS)model Improved particle swarm optimization(IPSO)algorithm Energy consumption Surface roughness Multiobjective optimization

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