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Recent Advances in Fibrous Materials for Hydroelectricity Generation

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Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge duo Xu Xiao Feng Xing yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao Yong Du Zhe Sun Weilin Xu Jian Fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

Steady-State Reversed Shear Mode Sustained by Lower Hybrid Current Drive

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Chinese Physics Letters 1998年第8期15卷 582-584页

作者： LI duo-chuan LI you-yi Institute of Plasma Physics Chinese Academy of SciencesHefei 230031

A simple model is presented for analysis of radial diffusion of current during lower hybrid current drive(LHCD).Considering the effect of radial diffusion of LH driven current and the bootstrap current,a steady-state reversed shear magnetic configuration can be sustained simply by LHCD and a such case on HT-7U tokamak was calculated as an example.

关键词： reversed diffusion sustained

Isolation and Identification of New Impurities in Nomegestrol Acetate

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Chemical Research in Chinese Universities 2009年第5期25卷 653-656页

作者： yang Zhong-duo ZHANG Xu LI Tao LI Yuan-chao WANG you-fu School of Life Science and Engineering Lanzhou University of Technology Lanzhou 730050 P. R. China Shanghai Institute ofMateria Medica Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 201203 P. R. China The 2nd Branch Factory of Xianju Pharmaceutical Factory Xianju 317300 P. R. China State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 P. R. China

Three new and five known steroidal compounds as impurities in nomegestrol acetate（I） were isolated from the enriched mother liquor via various chromatographic methods. Their structures were elucidated by spectrometric analysis and single-crystal X-ray diffraction analysis. New compounds were characterized as 17a-hydroxyl-3-oxoes- trane-5β, 17-dicarbonitrile（l）, 4-ethyl- 17a-hydroxyl-3-oxoestr-4-en- 17-carbonitrile（2）, 4-ethylestr-4-en-3,17-dione（3）. The ^13C NMR data of known estrane derivatives（4--7） were also reported first time in this paper. The study may be helpful to identifing and characterizing all the impurities that are present at a level of 0.1% and be useful in the quality control of the production ofnomegestrol acetate.

关键词： Steroid Nomegestrol acetate Estrane derivative

TRANSPORTATION CHARACTERISTIC OF BED LOAD FOR NON-UNIFORM SEDIMENT WITH EQUIVALENT GRAIN

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Journal of Hydrodynamics 2002年第3期14卷 117-121页

作者： He, Wen-She Cao, Shu-you Fang, duo Liu, Xing-Nian yang, Ju-Rui Hydraulics Lab. of High Speed Flows Sichuan Univ. Chengdu 610065 China

The incipient velocity of sediment is one of the most important basic theoretical problems of hydraulic engineering. The initial motion of sediment is a random process. Based on the combination methods of classical mechanics with statistics theory the formula to calculate the incipient motion of sediment was established. According to the standard of incipient motion, motion status, relative degree of expose for sediment and equivalent grain were defined. The coefficient in the formula included the flow fluctuation and relative degree of exposition. The value of the coefficient was calculated by using some parameters value. The results show that the value of dimensionless shear stress coefficient is not a constant, but locating in a range from 0.022 to 0.063 for weak and middle motion status, and varying with the relative degree of sediment expose. The value of dimensionless Shields numbers that put forward in the text can explain the reason that why the coefficients in difference formulas have wide scatter. The theoretical formula has been verified with amount of data collected from both natural rivers and flumes. The results can reflect the motion characteristic of the sediment.

关键词： Grain size and shape Mechanics Sediments Shear stress Statistics Transport properties

Characteristics of the Flow and Sediment in the Inner Rivers' Broad-shallow Shifting Reach

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四川大学学报（工程科学版） 2005年第S1期37卷 93-97页

作者： yang, Shengfa Zhou, Huajun Fang, duo State Key Lab. of Hydraulics Sichuan Univ. Chengdu 610065 China

Rivers are classified into two *** is the outer river which flows into ocean and the other is the inner river which does not flow into the ocean but into desert or *** inner rivers are the erosive rivers that have been seldom studied so *** on the field survey data,the analysis on the characteristics of the flow and sediment in the inner rivers' broad-shallow shifting (IRBS) *** IRBS reach often bears such the properties as:high gradient bed,usually 10‰or greater;small flow dischar...

关键词： the IRBS reach watershed features flow characteristics sedment transport

Modeling and Analysis of OFDMA-NOMA-RA Protocol Considering Imperfect SIC in Multi-User Uplink WLANs

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Computers, Materials & Continua 2024年第6期79卷 5273-5294页

作者： Hailing yang Suoping Li duo Peng School of Science Lanzhou University of TechnologyLanzhou730050China School of Computer&Communication Lanzhou University of TechnologyLanzhou730050China

To address the problems of network congestion and spectrum resources shortage in multi-user large-scale scenarios,this paper proposes a twice random access OFDMA-NOMA-RA protocol combining the advantages of orthogonal frequency division multiple access(OFDMA)and non-orthogonal multiple access(NOMA).The idea of this protocol is that OFMDA is used to divide the entire frequency field into multiple orthogonal resource units(RUs),and NOMA is used on each RU to enable more users to access the channel and improve spectrum *** on the protocol designed in this paper,in the case of imperfect successive interference cancellation(SIC),the probability of successful competition subchannels and the outage probability are derived for two scenarios:Users occupy the subchannel individually and users share the ***,when two users share the channel,the decoding order of the users and the corresponding probabilities are ***,the system throughput is *** achieve better outage performance in the system,the optimal power allocation algorithm is proposed in this paper,which enables the optimal power allocation strategy to be *** results show that the larger the imperfect SIC coefficient,the worse the outage performance of weak *** with pure OFDMA and NOMA,OFDMA-NOMA-RA always maintains an advantage when the imperfect SIC coefficient is less than a specific value.

关键词： Orthogonal frequency division multiple access(OFDMA) non-orthogonal multiple access(NOMA) random access(RA) imperfect successive interference cancellation(Imperfect SIC) outage probability

A physically based methodology for predicting anisotropic creep properties of Ni-based superalloys

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Rare Metals 2016年第8期35卷 606-614页

作者： Jia Huang duo-Qi Shi Xiao-Guang yang School of Energy and Power Engineering Beihang University

This paper is focused on developing suitable methodology for predicting creep characteristics （i.e., the minimum creep strain rate, stress rupture life and time to a specified creep strain） of typical Ni-based directionally solidified （DS） and single-crystal （SC） superalloys. A modem method with high accuracy on simulating wide ranging creep properties was fully validated by a sufficient amount of experimental data, which was then developed to model anisotropic creep characteristics by introducing a simple orientation factor defined by the ultimate tensile strength （UTS）. Physical confidence on this methodology is provided by the well-predicted transitions of creep defor- mation mechanisms. Meanwhile, this method was further adopted to innovatively evaluate the creep properties of different materials from a relative perspective.

关键词： Wilshire equations Anisotropic creepproperties Ni-based superalloy Prediction methodologyCreep mechanism

Selective derivatization of oxime-blocked tolylene-2,4-diisocyanate

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Chinese Chemical Letters 2013年第11期24卷 1019-1022页

作者： yang Sang Peng-Fei yang Tian-duo Li Shandong Provincial Key Laboratory of Fine Chemicals Shandong Polytechnic University

A selective reaction of cyclohexanone oxime-blocked tolylene-2,4-diisocyanate（2,4-TDI）with amino siloxane was observed,in which amines were capable of discriminating two reactive groups in the 2,4-TDI ***,tolylene-2-tert-butyldimethylsilyloxyethyl carbamide-4-cyclohexanone oxime carbamate was synthesized and its precise structure was determined by single-crystal X-ray ***,it was found that oxime-blocked isocyanate could react selectively with the–NH2group with the–OH group unprotected in ethanolamine.

关键词： Cyclohexanone oxime Tolylene-2 4-diisocyanate Ethanolamine Selective reactions

Transport Rate of Surface Erosion by the Hydrodynamics

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四川大学学报（工程科学版） 2005年第S1期37卷 81-85页

作者： yang, Jurui Cao, Shuyou Liu, Xingnian Fang, duo Dept. of Water Resources and Hydropower Kunming Univ. of Sci. and Tech. Kunming 650051 China State Key Lab. of Hydraulics and Mountain River Eng. Sichuan Univ. Chengdu 610065 China

The coherence and exposure degree are used in analyzing initiation of slope *** initial ve- locity is built by using a critical roiling model.A transport rate formula of slope erosion is established using the Meyer-Peter *** formula is tested by experiment and agrees well but the errors are big when the flow discharge and rain intensity are smaller.

关键词： binding power exposure degree erosion rate thin flow