Results 31 to 40 of about 668 (147)

Numerical simulation study on the evolution of the temperature field and frozen wall in fractured rock mass

Deep Underground Science and Engineering, EarlyView.
The evolution of the temperature field and frozen wall under different fracture conditions was examined by an artificial ground freezing‐based thermal‐hydraulic coupled model. It was observed that fracture inclination affects the interaction extent of freezing pipes and fracture, while phase transition extent is the dominant factor for heat transfer in
Chenyi Zhang, Tingting Luo, Tao Zhang, Tao Han, Xiaodong Zhao, Haipeng Li, Yanfei Ma, Faxing Zhang, Madhusudhan Bangalore Narasimha Murthy, Weihao Yang   +9 more
wiley   +1 more source

Spectral Efficiency of Network-Assisted Full-Duplex for Cell-Free Massive MIMO System Under Pilot Contamination

IEEE Access, 2021
A cell-free massive multiple-input multiple-output (MIMO) network-assisted full-duplex (NAFD) system has been proposed to satisfy the exploding demand of higher data transmission speed and more efficient communication.
Yanfeng Hu, Hongwu Ge, Haidong Wang, Dongming Wang   +3 more
doaj   +1 more source

A Review of Grain Boundaries: Formation Mechanism, Synthesis Strategy, and Application in Electrocatalysis

EcoEnergy, EarlyView.
An overview of grain boundary engineering in the field of electrocatalysis. ABSTRACT Key electrocatalytic reactions such as HER, OER, ORR, CO2RR, and NRR offer promising routes for storing renewable energy as chemical fuels. However, their widespread application is constrained due to the lack of highly active and stable catalysts. Grain boundaries (GBs)
Jingyu Gao, Fengming Zhou, Xinying Li, Ying Deng, Zexing Wu, Siyuan Feng, Yujing Zhu, Dan Zhang, Zhenyu Xiao   +8 more
wiley   +1 more source

Electrospun Biomass‐Derived Flexible Anodes With Hierarchical Structure via Cobalt MOF Integration for Sodium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Hierarchically porous, N‐doped freestanding anode enables reversible Na+ insertion/desorption and Na–Co alloying, delivering fast kinetics, structural robustness, and durable sodium‐storage performance even under bending/folding. To develop a green, sustainable, and high‐performance anode for sodium‐ion batteries (SIBs), flexible biomass‐based carbon ...
Yuqiong He, Shengping Hou, Jie Liu, Shengbo Ge, Siqun Wang, Mashallah Rezakazemi, Feng Liang, Guanben Du, Kaimeng Xu   +8 more
wiley   +1 more source

Insights to Industrial Electrocatalytic Sulfide Oxidation: Electrode Fabrication, System Engineering, and High‐Value Product Acquisition

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review summarizes recent advances in electrocatalytic sulfide oxidation (SOR), focusing on catalyst design strategies, reaction system engineering, and pathways for high‐value product generation. The roles of different reduced sulfur species (S2−, HS−, H2S) under various industrial conditions are highlighted, along with approaches to enhance ...
Zhongyuan Wang, Yinxi Han, Yufei Zhang, Jinghuan Chen, Jiade Wang   +4 more
wiley   +1 more source

COMPARISON BETWEEN MLD AND ZF ALGORITHMS FOR MIMO WIRELESS SYSTEM AT RAYLEIGH CHANNEL

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2018
In this paper, the performance of the Multiple Input Multiple Output (MIMO) technique evaluated in term of Bit Error Rate (BER) with respect to Signal to Noise Ratio (SNR) by using Binary Phase Shift Keying (BPSK) modulation for two algorithms Maximum ...
Mohannad A. Al-Ja'afari, Saif H. Abdulwahed, Ameer H. Ali   +2 more
doaj   +1 more source

Tuning Stability and Optoelectronic Properties of CsSnI3 Via Rare‐Earth Doping

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Sn‐based halide perovskites are promising optoelectronic materials but are limited by poor stability. Thus, rare‐earth elements (RE) doping in CsSnI3 addresses this limitation, significantly enhancing thermodynamic, mechanical, and chemical stability, while simultaneously tuning electronic characteristics and modulating optical responses in the ...
Haowei Wang, Feiyu Zhou, Zhuo Li, Yanghao Luo, Tongtong Li, Yilun Liu, Shengying Yue   +6 more
wiley   +1 more source

Accurate Approximation of ZF Massive MIMO Channel Rate With a Finite Antenna Over Ricean Fading Channel

IEEE Access, 2018
In a typical downlink massive multiple-input and multiple-output (massive MIMO) system, the available degree of freedom (DoF) and multiplexing gain improve the channel rate.
James Kweku Nkrumah Nyarko, Jian Xie, Rugui Yao, Yuexian Wang, Ling Wang   +4 more
doaj   +1 more source

The enhancing effects of locust bean gum and xanthan gum on the digestibility of potato starch under thermal treatments

Food Biomacromolecules, EarlyView.
The dual‐thermal treatment enhanced the interaction between potato starch and gums, consequently reducing starch digestibility. Abstract Locust bean gum (LBG) and xanthan gum (XG) played regulatory roles in the digestibility of potato starch (PS) during thermal treatments.
Xiaopei Hu, Yidi Zhang, Fenshu Zhang, Chunyan Wang, Qiyue Zhao, Suhong Li, Tuoping Li   +6 more
wiley   +1 more source

Optimized Hybrid Beamforming for RIS-Assisted Multi-User MIMO in 6G mmWave Networks: A Low-Complexity Approach to Spectral Efficiency and Interference Mitigation

IEEE Open Journal of the Communications Society
The joint optimization of hybrid beamforming and reconfigurable intelligent surface (RIS) phase shifts in multi-user millimeter-wave (mmWave) MIMO systems is a challenging problem, mainly due to high computational complexity and the lack of adaptive ...
Safiya Nasser Al-Jaradi, Mohammad Kamrul Hasan, Nabeel Al-Qirim, Shayla Islam, Thippa Reddy Gadekallu, Hana Mujlid, Hashim Elshafie, Rashid A. Saeed   +7 more
doaj   +1 more source