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Electrolytic silicon/graphite composite from SiO_(2)/graphite porous electrode in molten salts as a negative electrode material for lithium-ion batteries

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Rare Metals 2022年第2期41卷 438-447页

作者： Ning Wang Yu-Yang Liu zhi-xia shi Zhang-Long Yu Hua-Ying Duan Sheng Fang Juan-Yu Yang Xing-Ming Wang GRIREM Advanced Materials Co. Ltd.China Automotive Battery Research Institute Co.Ltd.General Research Institute for Nonferrous MetalsBeijing 100088China GRINM Resources and Environment Tech.Co.Ltd. General Research Institute for Nonferrous MetalsBeijing 100088China China Automotive Battery Research Institute Co.Ltd. General Research Institute for Nonferrous MetalsBeijing 100088China

Nano-silicon(nano-Si)and its composites have been regarded as the most promising negative electrode materials for producing the next-generation Li-ion batteries(LIBs),due to their ultrahigh theoretical ***,the commercial applications of nano Si-based negative electrode materials are constrained by the low cycling stability and high *** molten salt electrolysis of SiO_(2)is proven to be suitable to produce nano-Si with the advantages of in-situ microstructure control possibilities,cheap affordability and scale-up process ***,an economical approach for electrolysis,with a SiO_(2)/graphite porous electrode as cathode,is adopted to produce nano-Si/graphite composite negative electrode materials(SGNM)in this *** electrolytic product of the optimized porous electrode is taken as the negative electrode materials for LIBs,and it offers a capacity of 733.2 mAh·g^(-1)and an initial coulombic efficiency of 86.8%in a coin-type ***,the capacity of the SGNM retained 74.1%of the initial discharging capacity after 50 cycles at 0.2C,which is significantly higher than that of the simple mixture of silicon and graphite obtained from the formation of silicon carbide(SiC)between nano-Si and graphite ***,this new approach can be applied to a large-scale production.

关键词： Li-ion battery Negative electrode materials Molten salt electrolysis Nano-silicon

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论汇率问题对中美关系的影响

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特区经济 2011年第9期 110-111页

作者：余志权夏仕九江学院政法学院江西九江332005

近年来,随着中美贸易总量的持续扩大,汇率问题逐渐成为影响中美关系的重要问题。美国几届政府在人民币汇率升值问题上向中国不断施加压力,为此,中美双方的分歧、协商、合作一直存在。本文将阐述汇率政策上的磋商与合作对两国国内经济稳... 详细信息

近年来,随着中美贸易总量的持续扩大,汇率问题逐渐成为影响中美关系的重要问题。美国几届政府在人民币汇率升值问题上向中国不断施加压力,为此,中美双方的分歧、协商、合作一直存在。本文将阐述汇率政策上的磋商与合作对两国国内经济稳定增长及两国经贸关系健康发展的作用,并分析汇率问题对中美关系的短期和长期影响。

关键词：汇率经贸中美关系影响

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西山矿区煤层顺层孔CO_2爆破增透试验研究

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安徽理工大学学报（自然科学版） 2017年第4期37卷 54-58页

作者：贺志宏夏仕柏西山煤电(集团)有限责任公司山西太原030000 平安煤炭开采工程技术研究院有限责任公司安徽淮南232001 深部煤炭开采与环境保护国家重点实验室安徽淮南232001

为提高西山矿区煤层透气性,缩短瓦斯抽采达标时间,分析了煤层顺层孔CO_2预裂增透技术可行性,模拟了CO_2预裂增透半径。研究结果表明:CO_2爆生气体计算压力大于围岩作用下煤体强度,CO_2爆破煤层增透具备技术可行性;数值模拟显示,经过CO_... 详细信息

为提高西山矿区煤层透气性,缩短瓦斯抽采达标时间,分析了煤层顺层孔CO_2预裂增透技术可行性,模拟了CO_2预裂增透半径。研究结果表明:CO_2爆生气体计算压力大于围岩作用下煤体强度,CO_2爆破煤层增透具备技术可行性;数值模拟显示,经过CO_2预裂爆破后,预裂效果最好的是屯兰矿2#煤,煤层裂隙半径4.20m,其次是屯兰矿8#煤,煤层裂隙半径3.90m,再次是马兰矿8#煤,煤层裂隙半径3.45m,最后是东曲矿8#煤,煤层裂隙半径3.30m;现场试验表明,东曲矿8#煤爆破孔间距按6.5m布置,压裂区平均单孔抽采纯流量是未压裂区的3.2倍。

关键词：低透气性煤层瓦斯抽采二氧化碳爆破西山矿区

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河南地区两个腓骨肌萎缩症家系PMP22基因突变研究

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国际神经病学神经外科学杂志 2016年第4期43卷 287-291页

作者：陈祖芝任志霞史晓红李书剑时英英张杰文向莉郑州大学人民医院(原河南省人民医院) 河南省郑州市450003

目的分析在河南地区两个腓骨肌萎缩症(CMT)家系的临床表现及PMP22基因重复突变的特点。方法收集两家系中21名成员的临床资料,并应用等位基因特异性PCR-双酶切方法检测17p11.2-1 PMP22基因重复(即1760 bp片段)序列的情况,同时选择50名健... 详细信息

目的分析在河南地区两个腓骨肌萎缩症(CMT)家系的临床表现及PMP22基因重复突变的特点。方法收集两家系中21名成员的临床资料,并应用等位基因特异性PCR-双酶切方法检测17p11.2-1 PMP22基因重复(即1760 bp片段)序列的情况,同时选择50名健康人做为对照。结果两家系中共14名成员经等位基因特异性PCR-双酶切方法检测出PMP22基因大片重复(即1760 bp片段)序列;家系一患病者有3名(Ⅱ5、Ⅱ7、Ⅲ11),无临床症状但基因检测结果示PMP22基因重复突变为携带者有6名(Ⅱ9、Ⅲ6、Ⅲ8、Ⅲ10、Ⅳ1、Ⅳ2);家系二患病者有4名(Ⅱ3、Ⅱ9、Ⅱ11、Ⅲ7),携带者只有Ⅲ5。两家系中余7人及健康对照50人均未检测出上述重复突变。结论 PCR-双酶切法检测PMP22特异性基因重复序列在早期诊断CMT有重要价值。

关键词：腓骨肌萎缩症 PMP22基因重复突变 PCR-双酶切法

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Prediction and optimization of flue pressure in sintering process based on SHAP

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 346-359页

作者： Mingyu Wang Jue Tang Mansheng Chu Quan shi Zhen Zhang School of Metallurgy Northeastern UniversityShenyang 110819China Liaoning Low-Carbon Steelmaking Technology Engineering Research Center Northeastern UniversityShenyang 110819China Engineering Research Center of Frontier Technologies for Low-Carbon Steelmaking(Ministry of Education) Shenyang 110819China

Sinter is the core raw material for blast *** pressure,which is an important state parameter,affects sinter *** this paper,flue pressure prediction and optimization were studied based on the shapley additive explanation(SHAP)to predict the flue pressure and take targeted adjustment ***,the sintering process data were collected and processed.A flue pressure prediction model was then constructed after comparing different feature selection methods and model algorithms using SHAP+extremely random-ized trees(ET).The prediction accuracy of the model within the error range of±0.25 kPa was 92.63%.SHAP analysis was employed to improve the interpretability of the prediction *** effects of various sintering operation parameters on flue pressure,the relation-ship between the numerical range of key operation parameters and flue pressure,the effect of operation parameter combinations on flue pressure,and the prediction process of the flue pressure prediction model on a single sample were analyzed.A flue pressure optimization module was also constructed and analyzed when the prediction satisfied the judgment *** operating parameter combination was then *** flue pressure was increased by 5.87%during the verification process,achieving a good optimization effect.

关键词： sintering process flue pressure shapley additive explanation prediction optimization

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3D Printing of Tough Hydrogel Scaffolds with Functional Surface Structures for Tissue Regeneration

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Nano-Micro Letters 2025年第2期17卷 18-45页

作者： Ke Yao Gaoying Hong Ximin Yuan Weicheng Kong Pengcheng xia Yuanrong Li Yuewei Chen Nian Liu Jing He Jue shi Zihe Hu Yanyan Zhou zhijian Xie Yong He State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Liangzhu Laboratory Zhejiang UniversityHangzhou 310027People’s Republic of China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province College of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Stomatology Hospital School of StomatologyZhejiang University School of MedicineHangzhou 310027People’s Republic of China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001People’s Republic of China Institute of Digital Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006People’s Republic of China

Hydrogel scaffolds have numerous potential applications in the tissue engineering ***,tough hydrogel scaffolds implanted in vivo are seldom reported because it is difficult to balance biocompatibility and high mechanical *** by Chinese ramen,we propose a universal fabricating method(printing-P,training-T,cross-linking-C,PTC&PCT)for tough hydrogel scaffolds to fill this ***,3D printing fabricates a hydrogel scaffold with desired structures(P).Then,the scaffold could have extraordinarily high mechanical properties and functional surface structure by cycle mechanical training with salting-out assistance(T).Finally,the training results are fixed by photo-cross-linking processing(C).The tough gelatin hydrogel scaffolds exhibit excellent tensile strength of 6.66 MPa(622-fold untreated)and have excellent ***,this scaffold possesses functional surface structures from nanometer to micron to millimeter,which can efficiently induce directional cell ***,this strategy can produce bionic human tissue with mechanical properties of 10 kPa-10 MPa by changing the type of salt,and many hydrogels,such as gelatin and silk,could be improved with PTC or PCT *** experiments show that this scaffold can effectively promote the new generation of muscle fibers,blood vessels,and nerves within 4 weeks,prompting the rapid regeneration of large-volume muscle loss injuries.

关键词： 3D printing Tough hydrogel scaffold Functional surface structure Tissue regeneration Biomaterials

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Metabolic reprogramming: a new option for the treatment of spinal cord injury

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Neural Regeneration Research 2025年第4期20卷 1042-1057页

作者： Jiangjie Chen Jinyang Chen Chao Yu Kaishun xia Biao Yang Ronghao Wang Yi Li Kesi shi Yuang Zhang Haibin Xu Xuesong Zhang Jingkai Wang Qixin Chen Chengzhen Liang Department of Orthopedics The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiang ProvinceChina Orthopedics Research Institute of Zhejiang University Zhejiang UniversityHangzhouZhejiang ProvinceChina Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province HangzhouZhejiang ProvinceChina Clinical Research Center of Motor System Disease of Zhejiang Province HangzhouZhejiang ProvinceChina Qiandongnan Prefecture People’s Hospital KailiGuizhou ProvinceChina Department of Orthopedics Fourth Medical CenterChinese PLA General HospitalBeijingChina

Spinal cord injuries impose a notably economic burden on society,mainly because of the severe after-effects they *** the ongoing development of various therapies for spinal cord injuries,their effectiveness remains ***,a deeper understanding of metabolism has opened up a new therapeutic opportunity in the form of metabolic *** this review,we explore the metabolic changes that occur during spinal cord injuries,their consequences,and the therapeutic tools available for metabolic *** spinal cord metabolism is characterized by independent cellular metabolism and intercellular metabolic ***,spinal cord injury results in metabolic disorders that include disturbances in glucose metabolism,lipid metabolism,and mitochondrial *** metabolic disturbances lead to corresponding pathological changes,including the failure of axonal regeneration,the accumulation of scarring,and the activation of *** rescue spinal cord injury at the metabolic level,potential metabolic reprogramming approaches have emerged,including replenishing metabolic substrates,reconstituting metabolic couplings,and targeting mitochondrial therapies to alter cell *** available evidence suggests that metabolic reprogramming holds great promise as a next-generation approach for the treatment of spinal cord *** further advance the metabolic treatment of the spinal cord injury,future efforts should focus on a deeper understanding of neurometabolism,the development of more advanced metabolomics technologies,and the design of highly effective metabolic interventions.

关键词： axons glycolysis metabolic reprogramming metabolism mitochondria neural regeneration neuroprotection oxidative phosphorylation spinal cord injury therapy

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Solventless ketalization of glycerol to solketal with acetone over the ionic liquid[P(C4H9)3C14H29][TsO]

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Chinese Journal of Chemical Engineering 2020年第1期28卷 158-164页

作者： Yu Ji Tengda Zhang xia Gui Haijian shi zhi Yun College of Chemistry and Chemical Engineering Nanjing Tech UniversityNanjing 210009China

The ketalization of glycerol with acetone was conducted over an ionic liquid[P(C4H9)3C14H29][TsO](TTPT)in a batch reactor.A scheme to obtain the purified product using TTPT as a homogeneous catalyst is proposed and a maximum solketal yield of 86%is achieved at acetone/glycerol molar ratio of 6/1,reaction time of 0.5 h,reaction temperature of 303 K,catalyst amount of 5 wt%of *** was recycled and reused for ten times without obvious losses in terms of quantity and ***,effects of various experimental parameters(stirring speed,catalyst loadings,temperature and reactant composition)on the reaction kinetics are *** terms of kinetics modeling,Kγis fitted by reactant composition at the temperature range 298 K–323 K,which was a concise strategy that showed good precision in the kinetics *** activation energy for this ketalization reaction was evaluated to be 28.2 kJ·mol^-*** addition,the kinetics of the reaction at a temperature exceeding the boiling point of acetone were also *** believe that all the results are important for further development of a technology for the continuous synthesis of solketal.

关键词： Ionic liquid Ketalization Solketal Glycerol Reaction kinetics Reactive distillation

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miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong Jing-Jing Hu Yan Yu xiao-Li Li xiao-Ting Sun Li-Ting Wang xia Wu Ling-Jie Zhu xiao-Jia Yang Qian-Ru He Fei Ding Hai-Yan shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

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Numerical studies on the boundary entanglement in an optomechanical phonon laser system

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Communications in Theoretical Physics 2020年第11期72卷 37-42页

作者： Qing-xia Meng zhi-Jiao Deng shi-Wei Cui Department of Physics College of Liberal Arts and SciencesNational University of Defense TechnologyChangsha 410073China Northwest Institute of Nuclear Technology Xi’an 710024ShaanxiChina Interdisciplinary Center for Quantum Information National University of Defense TechnologyChangsha 410073China

In our previous work(Meng et al 2020 ***.A 101023838),we discover the phenomenon that the quantum entanglement on the driving threshold line remains a constant in a three-mode optomechanical phonon laser *** this paper,to find the conditions under which the constant boundary entanglement shows up,we explicitly study how this boundary entanglement depends on various parameters through numerical *** results show that the necessary and sufficient condition is a resonant frequency match between the optical frequency difference and the mechanical vibrational frequency,and this constant value is proportional to the multiplication of the square of the optomechanical coupling strength and the resonant driving threshold power.

关键词： boundary entanglement optomechanics phonon laser

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