检索结果-南通市图书馆

维普期刊数据库博看期刊

The Feasibility Research on Reusing High Salinity Wastewater as a Plant Nutrient Medium for Plant Hydroponics in CELSS

在线全文

学校读者我要写书评

暂无评论

Space(Science & Technology) 2022年第1期2022卷 370-380页

作者： Liangchang zhang Yurong Xue You Wang chengbo zhan Weidang Ai Xingyan Wang National Key Laboratory of Human Factors Engineering China Astronaut Research and Training CenterBeijing 100094China Department of Environmental Science and Engineering College of Environment and ResourcesXiangtan UniversityXiangtan 411105China Space Institute of Southern China Shenzhen 518117China

The reuse of wastewater is a key problem in controlled ecological life support system(CELSS).In this study,the feasibility to reuse the treated wastewater(including sanitary wastewater and urine wastewater)as a plant hydroponic medium was *** salt-tolerant plants,apium graveolens Linn(celery)and mesembryanthemum cordifolium L.F.(cordifolium),were cultivated with the reused medium or Hoagland nutrient solution,and the characteristics of crop growth,hydroponic medium composition,and elements absorption by plants were *** results showed that the reused medium replenished with micronutrient elements could maintain the normal growth of cordifolium and celery *** biomass productivity of cordifolium cultivated by the recycled medium(121.53 g FW/strain)was higher than that cultivated by Hoagland nutrient solution(98.33 g FW/strain).The nutrient elements accumulation in plant dry mass indicated that plants could effectively utilize the recycled mineral elements in wastewater,and cordifolium exhibited better stability and adaptability to salt-induced *** absorption capacity of Na and Cl elements in cordifolium cultivated within the reused medium was the highest,which was 4.54%DW and 2.63%DW,*** study demonstrated the feasibility to directly reuse domestic wastewater as the main ingredient for plant hydroponics,which could provide insights into design and operation of plant hydroponics system and water circulation system in CELSS.

关键词： wastewater Plant utilize

Structural characterization of carboxyl cellulose nanofibers extracted from underutilized sources

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2019年第6期62卷 971-981页

作者： zhan chengbo SHARMA Priyanka R. GENG LiHong SHARMA Sunil K. WANG RuiFu JOSHI Ritika HSIAO Benjamin S. Department of Chemistry Stony Brook University Stony Brook NY 11794-3400 USA National Engineer Research Center of Novel Equipment for Polymer Processing Key Laboratory of Polymer Processing Engineering of Ministry of Education South China University of Technology Guangzhou 510640 China

Two different chemical methods, TEMPO-oxidation and nitro-oxidation, were used to extract carboxyl cellulose nanofibers(CNFs) from non-wood biomass sources(i.e., jute, soft and hard spinifex grasses). The combined TEMPO-oxidation and homogenization approach was very efficient to produce CNFs from the cellulose component of biomass;however, the nitrooxidation method was also found to be effective to extract CNFs directly from raw biomass even without mechanical *** effect of these two methods on the resulting cross-section dimensions of CNFs was investigated by solution small-angle Xray scattering(SAXS), transmission electron microscopy(TEM) and atomic force microscopy(AFM). The UV-Vis spectroscopic data from 0.1 wt% TEMPO-oxidized nanofiber(TOCNF) and nitro-oxidized nanofiber(NOCNF) suspensions showed that TOCNF had the highest transparency(> 95%) because of better dispersion, resulted from the highest carboxylate content(1.2 mmol/g). The consistent scattering and microscopic results indicated that TOCNFs from jute and spinifex grasses possessed rectangular cross-sections, while NOCNFs exhibited near square cross-sections. This study revealed that different oxidation methods can result in different degrees of biomass exfoliation and different CNF morphology.

关键词： cellulose nanofibers TEMPO-oxidation nitro-oxidation SAXS microscopy jute spinifex

Cloud-Edge Collaborative Federated GAN Based Data Processing for IoT-Empowered Multi-Flow Integrated Energy Aggregation Dispatch

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第7期80卷 973-994页

作者： zhan Shi Electric Power Dispatching Control Center Guangdong Power Grid Co.Ltd.Guangzhou510030China

The convergence of Internet of Things(IoT),5G,and cloud collaboration offers tailored solutions to the rigorous demands of multi-flow integrated energy aggregation dispatch data *** generative adversarial networks(GANs)are instrumental in resource scheduling,their application in this domain is impeded by challenges such as convergence speed,inferior optimality searching capability,and the inability to learn from failed decision making ***,a cloud-edge collaborative federated GAN-based communication and computing resource scheduling algorithm with long-term constraint violation sensitiveness is proposed to address these *** proposed algorithm facilitates real-time,energy-efficient data processing by optimizing transmission power control,data migration,and computing resource *** employs federated learning for global parameter aggregation to enhance GAN parameter updating and dynamically adjusts GAN learning rates and global aggregation weights based on energy consumption constraint *** results indicate that the proposed algorithm effectively reduces data processing latency,energy consumption,and convergence time.

关键词： IoT federated learning generative adversarial network data processing multi-flowintegration energy aggregation dispatch

Accelerated partial breast irradiation:Current evidence and future developments

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cancer Innovation 2024年第1期3卷 104-112页

作者： Dandan Song Honghong zhang chengbo Ren Ning zhan Liangxi Xie Wenjia Xie Department of Radiation Oncology Xiang'an Hospital of Xiamen UniversityCancer Research CenterSchool of MedicineXiamen UniversityXiang'anXiamenChina Department of Radiation Oncology The First Affiliated Hospital of Hebei North UniversityZhangjiakouHebeiChina

Whole breast irradiation after breast-conserving surgery for early breast cancer has become one of the standard treatment modes for breast cancer and yields the same effect as radical *** partial breast irradiation(APBI)as a substitute for whole breast irradiation for patients with early breast cancer is a hot spot in clinical *** is characterised by simple high-dose local irradiation of the tumour bed in a short time,thus improving convenience for patients and saving *** implementation methods of APBI mainly include brachytherapy,external beam radiation therapy,and intraoperative *** review provides an overview of the clinical effects and adverse reactions of the main technologies of APBI and discusses the prospects for the future development of APBI.

关键词： accelerated partial breast irradiation brachytherapy breast cancer breast conserving surgery external beam radiation therapy intraoperative radiotherapy

Breakthrough in Li-mediated continuous electrosynthesis of ammonia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第10期67卷 3191-3192页

作者： Fei zhan Chang Yu State Key Laboratory of Chemical Resource Engineering College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China State Key Laboratory of Fine Chemicals Liaoning Key Lab for Energy Materials and Chemical EngineeringSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China

Ammonia(NH3)ranks among the manufactured chemicals,with an annual production surpassing 182 million tons[1],which is an indispensable raw material for fertilizer industry and has been recognized as a promising carbon-... 详细信息

关键词： ammonia Ammonia suppl

A Review on the Mullins Effect in Tough Elastomers and Gels

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Solida Sinica 2024年第2期37卷 181-214页

作者： Lin zhan Shaoxing Qu Rui Xiao MOE Key Lab of Disaster Forecast and Control in Engineering College of Mechanics and Construction EngineeringJinan UniversityGuangzhou510632China State Key Laboratory of Fluid Power and Mechatronic System Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceDepartment of Engineering MechanicsZhejiang UniversityHangzhou310027China

Tough elastomers and gels have garnered broad research interest due to their wide-ranging potential ***,during the loading and unloading cycles,a clear stress softening behavior can be observed in many material systems,which is also named as the Mullins *** this work,we aim to provide a complete review of the Mullins effect in soft yet tough materials,specifically focusing on nanocomposite gels,double-network hydrogels,and multi-network *** first revisit the experimental observations for these soft *** then discuss the recent developments of constitutive models,emphasizing novel developments in the damage mechanisms or network *** phenomenological models will also be briefly *** attention is then placed on the anisotropic and multiaxial modeling *** is demonstrated that most of the existing models fail to accurately predict the multiaxial data,posing a significant challenge for developing future anisotropic models tailored for tough gels and elastomers.

关键词： Mullins effect Double-network hydrogels Nanocomposite gels Multi-network elastomers Anisotropic damage model Multiaxial model

Gelfand-Kirillov Dimension and Reducibility of Scalar Generalized Verma Modules for Classical Lie Algebras

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第3期40卷 658-706页

作者： zhan Qiang BAI Jing JIANG School of Mathematical Sciences Soochow UniversitySuzhou 215006P.R.China E-mail:zqbai@*** jjsd6514@***

Let g be a classical complex simple Lie algebra and q be a parabolic *** M be a generalized Verma module induced from a one dimensional representation of *** M is called a scalar generalized Verma *** this paper,we will determine the reducibility of scalar generalized Verma modules associated to maximal parabolic subalgebras by computing explicitly the Gelfand-Kirillov dimension of the corresponding highest weight modules.

关键词： Generalized Verma module Gelfand-Kirillov dimension Young tableau

Miniaturized, Shared Electric and Magnetic Dipole, Pattern Diversity IoT Antenna for Sub-6 GHz Applications

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2024年第5期33卷 1224-1233页

作者： zhan WANG Yuandan DONG University of Electronic Science and Technology of China

By using a novel meta-resonator structure, a miniaturized, surface mountable, shared aperture, and hybrid electric/magnetic dipole pattern diversity antenna is proposed for Internet of things（IoT） applications. By exploring the shared electric（E-dipole） and magnetic dipole（M-dipole） structures, a novel T-shaped split-ring resonator（SRR） with even and odd modes is presented and studied by current distributions and equivalent *** and omnidirectional（monopole-like） patterns are achieved by exciting the M-dipole and E-dipole modes of the T-shaped SRR, respectively. To validate the proposed design, this shared aperture metamaterial-inspired pattern diversity antenna with a small size of 0.295λ0× 0.0065λ0× 0.115λ0is fabricated and measured. The measured overlapped-10 dB bandwidth is from 3.40 GHz to 3.63 GHz（7.0%, covering the LTE B42 band） and the port isolation is greater than 23 dB. Both two modes achieve a good radiation efficiency better than-0.79 d B（>83.0%）.

关键词： Antenna measurements Dipole antennas Surface mount technology Switches Size measurement Aperture antennas Internet of Things Electric/magnetic dipoles Internet of things (IoT) Metamaterial-based/inspired antenna LOW-PROFILE PATCH ANTENNA RECONFIGURABLE ANTENNA MICROSTRIP ANTENNA RADIATION-PATTERN HIGH-GAIN FREQUENCY ARRAY

Mega-Constellations Based TT&C Resource Sharing: Keep Reliable Aeronautical Communication in an Emergency

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

China Communications 2024年第2期21卷 1-16页

作者： Haoran Xie Yafeng zhan Jianhua Lu Department of Electronic Engineering Tsinghua UniversityBeijing 100084China Beijing National Research Center for Information Science and Technology Tsinghua UniversityBeijing 100084China

With the development of the transportation industry, the effective guidance of aircraft in an emergency to prevent catastrophic accidents remains one of the top safety concerns. Undoubtedly, operational status data of the aircraft play an important role in the judgment and command of the Operational Control Center(OCC). However, how to transmit various operational status data from abnormal aircraft back to the OCC in an emergency is still an open problem. In this paper, we propose a novel Telemetry, Tracking,and Command(TT&C) architecture named Collaborative TT&C(CoTT&C) based on mega-constellation to solve such a problem. CoTT&C allows each satellite to help the abnormal aircraft by sharing TT&C resources when needed, realizing real-time and reliable aeronautical communication in an emergency. Specifically, we design a dynamic resource sharing mechanism for CoTT&C and model the mechanism as a single-leader-multi-follower Stackelberg game. Further, we give an unique Nash Equilibrium(NE) of the game as a closed form. Simulation results demonstrate that the proposed resource sharing mechanism is effective, incentive compatible, fair, and reciprocal. We hope that our findings can shed some light for future research on aeronautical communications in an emergency.

关键词： aeronautical emergency communication mega-constellation networked TT&C resource allocation stackelberg game