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A mild, configurable, flexible CoNi-LDH（v）/Zn battery based on H-vacancy-induced reversible Zn2+ intercalation

Journal of Energy Chemistry 2025年第1期100卷 498-508页

作者： Xinyue Cheng Dingsheng Wu hao Gao Qingqing Wang Pengfei Lv Sam S.Yoon Qufu Wei Key Laboratory of Eco-textiles Ministry of Education Jiangnan University School of Mechanical Engineering Korea University

Flexible Zn-based batteries have attracted increasing research interest as essential components of wearable energy storage ***,the advancement of flexible aqueous Zn-based batteries based on Co-Ni layered double hydroxide （CoNi-LDH） as the cathode material is hampered by their poor cycling stability and the corrosiveness of alkaline ***,CoNi-LDH nanosheets enriched with H vacancies (CoNi-LDH（v）) were constructed on a flexible carbon cloth （CC） substrate via electrochemical deposition and *** Zn-based battery comprising CoNi-LDH（v）@CC as the cathode exhibited highly reversible conversion reactions and stable operation in 3 M ZnSO4electrolyte （pH=4）.The battery delivered an excellent specific capacity (225 mA h g-1,0.26 mA h cm-2),acceptable cycling stability（53.9%,900 cycles）,and high discharging *** abundant H vacancies served as active sites for the reversible intercalation of Zn2+and the extravasation of NO3-generated channels and space for Zn2+transport and storage,together enabling an excellent Zn2+storage ***,a sandwich-structured solid-state CoNi-LDH（v）@CC//Zn@CC battery was fabricated and was found to exhibit a noteworthy electrochemical performance and mechanical *** a proof of concept,the unencapsulated battery powered a digital watch under various deformation conditions and operated stably for 80 ***,the flexible battery displayed outstanding customizability,maintaining an open-circuit voltage of 1.42 V even after being cut *** proposed engineering strategy contributes to the realization of textiles with truly wearable energy-storage devices.

关键词： CoNi/Zn battery H vacancies Mild aqueous electrolyte Tailorable battery Wearable energy storage device

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Pressure characteristics of hydrodynamic cavitation reactor due to the combination of Venturi tubes with multi-orifice plates

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Journal of Hydrodynamics 2018年第3期30卷 514-521页

作者： Kai Zhang zhi-yong Dong Rui-hao Yao Research Institute of Hydraulic and Municipal Engineering Zhejiang University of Technology Hangzhou 310014 China

The pressure characteristics in the throats of Venturi tube and behind triangular multi-orifice plates were experimentally investigated by a pressure data acquisition system of SINOCERA-YE6263, and the effect of throat length of Venturi tube, different geometric parameters of multi-orifice plate and their combinations on the time-averaged pressure, cavitation number, and pressure frequency spectrum, correlation function calculated by FFT were analyzed. The experimental results showed that the throat length of L/R= 40 made for improving the fluctuation energy and promoting the uniform energy distribution, appropriately decreasing the size and increasing the number of orifice could accelerate the uniform distribution of the fluctuation energy in frequency domain. In the combination reactors, the cavitation number behind multi-orifice plates was lower and the fluctuation of correlation function was more intense.

关键词： Hydrodynamic cavitation Venturi tube triangular multi-orifice plate pressure characteristics frequency spectrum correlation function

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Liquid-solid mass transfer in a rotating packed bed reactor with structured foam packing

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Chinese Journal of Chemical Engineering 2020年第10期28卷 2507-2512页

作者： Yazhao Liu zhi hao Li Guangwen Chu Lei Shao yong Luo Jianfeng Chen Research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing 100029China State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China

A rotating packed bed(RPB) reactor has substantially potential for the process intensification of heterogeneous catalytic reactions. However, the scarce knowledge of the liquid–solid mass transfer in the RPB reactor is a barrier for its design and scale-up. In this work, the liquid–solid mass transfer in a RPB reactor installed with structured foam packing was experimentally studied using copper dissolution by potassium dichromate. Effects of rotational speed, liquid and gas volumetric flow rate on the liquid–solid mass transfer coefficient(kLS) have been investigated. The correlation for predicting kLSwas proposed, and the deviation between the experimental and predicted values was within±12%. The liquid–solid volumetric mass transfer coefficient(kLSaLS) ranged from 0.04–0.14 1^-1, which was approximately 5 times larger than that in the packed bed reactor. This work lays the foundation for modeling of the RPB reactor packed with structured foam packing for heterogeneous catalytic reaction.

关键词： Rotating packed bed Liquid–solid mass transfer Structured foam packing Process intensification

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新高考背景下深化高中教育教学改革应重视的几个问题

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教学与管理 2025年第1期 12-14页

作者：司晓宏马永昊陕西师范大学教育学部西安710062 陕西省社会科学院西安710061

自2014年新高考改革启动以来,已在全国29个省市逐步推进。调研发现,新高考在实际推进中给普通高中传统的教育、教学和管理带来了诸多压力与挑战,这突出表现为:“选课走班制”在实际推行中存在许多堵点;“学生综合素质评价”面临着评价... 详细信息

自2014年新高考改革启动以来,已在全国29个省市逐步推进。调研发现,新高考在实际推进中给普通高中传统的教育、教学和管理带来了诸多压力与挑战,这突出表现为:“选课走班制”在实际推行中存在许多堵点;“学生综合素质评价”面临着评价标准不一、结果应用受限等困境;“学生生涯规划教育”存在着专业性不强、效果不佳等问题;学生多样化自由选课凸显教师队伍结构性缺编等。针对上述问题,应加强普通高中选课走班制的资源条件支持,健全学生综合素质评价的体制机制,提高学生生涯规划教育的专业性和精准度,积极破解改革所导致的教师结构性缺编问题,以推动和确保新高考改革各项政策有效落地实施。

关键词：新高考改革选课走班制学生综合素质评价生涯规划教育教育教学改革

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Learnware:small models do big

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Science China(Information Sciences) 2024年第1期67卷 39-50页

作者： zhi-Hua ZHOU zhi-hao TAN National Key Laboratory for Novel Software Technology Nanjing University

There are complaints about current machine learning techniques such as the requirement of a huge amount of training data and proficient training skills,the difficulty of continual learning,the risk of catastrophic forgetting,and the leaking of data privacy/*** research efforts have been focusing on one of those concerned issues separately,paying less attention to the fact that most issues are entangled in *** prevailing big model paradigm,which has achieved impressive results in natural language processing and computer vision applications,has not yet addressed those issues,whereas becoming a serious source of carbon *** article offers an overview of the learnware paradigm,which attempts to enable users not to need to build machine learning models from scratch,with the hope of reusing small models to do things even beyond their original purposes,where the key ingredient is the specification which enables a trained model to be adequately identified to reuse according to the requirement of future users who know nothing about the model in advance.

关键词： artificial intelligence machine learning learnware

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Flow stress and constitutive relations of ship plate steel continuous casting slab with solidification end reduction process

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Journal of Iron and Steel Research International 2023年第9期30卷 1769-1781页

作者： zhi-yuan Liu Li-hao Zhang Cheng Ji Miao-yong Zhu Chong-jun Wang Engineering Research Center of Frontier Technologies for Low-carbon Steelmaking(Ministry of Education) Shenyang 110819LiaoningChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina Tangshan Medium and Heavy Plate Co. Ltd.Tangshan 063000HebeiChina

In order to describe the thermal–mechanical behavior of the ship plate steel continuous casting slab during solidification end heavy reduction(HR)process accurately,its constitutive behavior was investigated by a single-pass thermal compression *** to the deformation features of wide thick continuous casting slab with HR,the simulation temperature ranged from 1173 to 1573 K with strain rates of 0.0001,0.001,0.01 and 0.1 s^(-1).Three different constitutive models,the modified Johnson–Cook(JC)model,the modified Zerilli–Armstrong(ZA)model and the Arrhenius model,were established according to the obtained true stress–strain *** average relative error of the modified JC model,the modified ZA model and the Arrhenius model are 10.82%,9.96%and 6.21%,*** the obvious softening effect of the flow curve at a low strain rate,the secondary softening factor under the interaction of low strain rate and the temperature was introduced in the original Arrhenius *** to the Arrhenius model,the modified Arrhenius model error decreased from 6.21%to 4.73%.

关键词： Ship plate steel Wide thick slab Continuous casting Flow stress Constitutive model

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Transmission loss simulation based on rectangular-pulse method and experimental evaluation of acoustic performance of perforated intake pipe

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Journal of Central South University 2017年第11期24卷 2605-2612页

作者： LI Heng hao zhi-yong ZHENG Xu LIU Lian-yun College of Energy Engineering Zhejiang UniversityHangzhou 310027China

Exact simulation of the acoustic performance is essential to the engineering application for a vehicle intake system. The rectangular-pulse method based on the computational fluid dynamics approach was employed for calculating the transmission loss. Firstly, the transmission loss of the single-cavity element was simulated without any airflow, and the effects of different structural parameters on the acoustic performance were investigated comprehensively. Secondly, the static transmission loss of the perforated intake pipe was obtained by the rectangular-pulse method, which is proved to be accurate enough compared with the result by finite element method. Thirdly, under the different conditions of the mean airflow and the operating temperature, the specific transmission loss was acquired respectively. In general, the peaks of the transmission loss are shifted to the lower frequency range because of the reverse airflow, but the amplitudes are irregularly changed. Besides, when the operating temperature increases, the peaks are shifted to the higher frequencies. Finally, with the designed perforated pipe installed to the intake system, the road tests were proceeded to evaluate the actual acoustic performance, and the result indicates that the intake sound pressure level is greatly attenuated. Typically in the range of 600–1500 Hz, the insertion loss of the intake noise at the decelerating moment is almost 20 d B(A), and the overall noise is reduced more than 14.2 d B(A). In conclusion, the perforated intake pipe has been proved excellent in improving the acoustic performance of intake system and could provide the guidance for the automotive engineering application.

关键词： perforated intake pipe rectangular-pulse method transmission loss mean flow temperature road test

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Simulation of rock mass balance of two typical altered rocks in Wulong gold deposit of Liaoning, China

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Journal of Central South University 2001年第3期13卷 197-202页

作者： WEI Jun-hao LIU Cong-qang LI zhi-de Zhao yong-xin Faculty of Earth Resources China University of GeosciencesWuhan 430074China Institute of Geochemistry Chinese Academy of SciencesGuiyang 550002China

Wulong gold deposit hosted in granite and fine-grained d io rite dikes, is a typical gold deposit of quartz vein type. Granite and fine-gra ined diorite dikes in the ore deposit were altered by metallogenic fluid. Based on the altered zoning, the samples of petrochemistry were collected and major an d trace elements were analyzed systematically. Calculation of rock mass balance shows that the major elements (SiO 2, K 2O, P 2O 5, Fe 2O 3) in the two ty pical altered rocks are clearly added into the altered system, and that trace el ements (V, Y, Zr, Ni, Co, Sr) assume an increasing and decreasing tendencies in the altered granite and altered diorite dike, respectively. The fluid/rock ratio s are 30.17-181.00 and 115.44-692.67 respectively for altered granite and alte red diorite dike, they have profoundly effects on metallogenesis.

关键词： altered rock rock mass balance Wulong gold deposit

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Enhanced energy density in polyetherimide nanocomposite film at high temperature induced by electrospun BaZrTiO_(3) nanofibers

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Rare Metals 2023年第6期42卷 1912-1922页

作者： Ming-zhi Fan Bin-Zhou Sun Jian-yong Jiang Jia-Yu Pan Peng-hao Hu Research Center for New Energy Composite Materials Foshan(Southern China)Institute for New MaterialsFoshan528200China Research Center for New Functional Composites Wuzhen LaboratoryTongxiang314500China

Polymer dielectrics which possess excellent dielectric properties such as high breakdown strength,flexibility,and facile processability are considered as promising materials for advanced electrostatic ***,most dielectric polymers have unsatisfactory energy storage performances at high-temperature ***,polyetherimide(PEI) nanocomposite films contained with electrospun Ba(Zr_(0.79)Ti_(0.21))O_(3) nanofibers(BZTNFs) are fabricated by common solution casting *** dielectric properties,especially the breakdown strength of the BZTNFs/PEI nanocomposites,are characterized,yet improvement is only in the small loading *** energy storage performance of the 0.5 vol% and1.0 vol% BZTNFs content nanocomposite is further investigated from 25 to 150℃.With the introduction of small loading BZTNFs,the dielectric permittivity and electric displacement of the nanocomposite are improved at all evaluated *** 1.0 vol% BZTNFs/PEI possesses a maximal discharged energy density of6.05 J·cm^(-3) with high efficiency of 94.9% at 25℃,then falls to 3.34 J·cm^(-3) with efficiency of 54.6% at 150℃ for the larger remnant ***,the relaxation ferroelectric nanofller of BZTNFs is much effective in increasing the dielectric permittivity of nanocomposite,but its capacity to restrict the migration of the charge carriers at high temperatures is weaker than that of the nanofillers with wider *** complementation of both kinds of the nanofillers probably provides an approach to available high-temperature dielectric films.

关键词： Energy density Polyetherimide(PEI) Nanocomposite film High temperature Electrospun nanofibers

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A Novel Bat Algorithm based on Cross Boundary Learning and Uniform Explosion Strategy

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Applied Mathematics(A Journal of Chinese Universities) 2019年第4期34卷 480-502页

作者： yong Jia-shi HE Fa-zhi LI hao-ran ZHOU Wei-qing School of Computer Science Wuhan UniversityWuhan 430072China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China

Population-based algorithms have been used in many real-world *** algorithm(BA)is one of the states of the art of these *** of the super bat,on the one hand,BA can converge quickly;on the other hand,it is easy to fall into local ***,for typical BA algorithms,the ability of exploration and exploitation is not strong enough and it is hard to find a precise *** this paper,we propose a novel bat algorithm based on cross boundary learning(CBL)and uniform explosion strategy(UES),namely BABLUE in short,to avoid the above contradiction and achieve both fast convergence and high *** from previous opposition-based learning,the proposed CBL can expand the search area of population and then maintain the ability of global exploration in the process of fast *** order to enhance the ability of local exploitation of the proposed algorithm,we propose UES,which can achieve almost the same search precise as that of firework explosion algorithm but consume less computation *** is tested with numerous experiments on unimodal,multimodal,one-dimensional,high-dimensional and discrete problems,and then compared with other typical intelligent optimization *** results show that the proposed algorithm outperforms other algorithms.

关键词： Optimization Bat algorithm Cross boundary learning Uniform explosion strategy

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