Extreme thermal load generation method for high-temperature structures in atmospheric environment by WANG Binwen, ZHANG Yi, QIN Qiang, CHEN Hong, WU Jingtao

“…The research shows that the modular graphite ultra-high temperature heating device has the ultra-high temperature heating ability in atmospheric environments, with maximum radiation heat flux of 1.38 MW/m2, hot surface temperature of around 1 800 ℃, and the temperature rise rate can reach 40.3 ℃/s, providing technical conditions for the thermal test of hypersonic aircraft structure.…”
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Improving the efficiency of an optical-to-terahertz converter using sapphire fibers by N. V. Zenchenko, D. V. Lavrukhin, I. A. Glinskiy, D. S. Ponomarev

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Experimental study on the influence of lapping plate materials on the quality of both sides cylindrical rollers machining by Tianchen Zhao, Jiahong Ruan, Kaiping Feng, Luguang Guo, Hongyu Chen, Binghai Lyu, Junkai Ding, Xiaoliang Jiang

“…The study fully confirm that the hard ceramic significantly enhances lapping plate wear resistance, machining precision and consistency, which provides a new approach to ultra-precision machining of cylindrical rollers.…”
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Cyclostationary Feature Detection Based on Compressed Sensing and Wavelet De-Noising by Haifeng Tan, Jun Lu, Xuan Fu, Qixun Zhang

“…To improve the vacant spectrum utilization，ultra-wideband spectrum sensing is critical for cognitive radio （CR）as it enables secondary users to dynamically access the unoccupied spectrum bands.However，the fast and accurate spectrum sensing is still a challenge over an ultra-wide bandwidth in low signal to noise ratio（SNR） environment.A compressed sensing （CS）-feature detector based on wavelet de-noising was proposed to perform wideband detection in low SNR.CS was proposed to improve the efficiency of wideband spectrum sensing.And two dimensional wavelet transform was introduced to deal with the noise in spectral coherence function（SCF）by the CS process.As a result，the detection accuracy in low SNR was improved.It is found that the proposed technology can detect spectrum holes at a range of low SNR through simulation results.…”
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Reconciling predicted and measured viscosity parameters in high concentration therapeutic antibody solutions by Georgina Bethany Armstrong, Aisling Roche, William Lewis, Zahra Rattray

“…Monoclonal antibody (mAb) solution viscosity in ultra-high concentration formulations is a key developability consideration in mAb development risk mitigation strategies that has implications for downstream processing and patient safety. …”
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Fourier Transform Infrared Spectroscopy of “Bisphenol A” by Ramzan Ullah, Ishaq Ahmad, Yuxiang Zheng

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Optimal downlink power allocation schemes for OFDM-NOMA-based Internet of things by Ya Gao, Fei Yu, Haoran Zhang, Yongpeng Shi, Yujie Xia

“…To improve the throughput of the system, this article combines non-orthogonal multiple access with ultra-dense networks technology and considers the orthogonal frequency division multiplexing non-orthogonal multiple access–based ultra-dense networks with multiple base stations and multiple Internet of Things devices. …”
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Xpert MTB/XDR implementation in South Africa: cost outcomes of centralised vs. decentralised approaches by N. Cassim, S.V. Omar, S.D. Masuku, H. Moultrie, W.S. Stevens, F. Ismail, P. da Silva

“…INTRODUCTION: In South Africa, Xpert® MTB/RIF Ultra (Ultra) is the recommended diagnostic assay for TB with line-probe assays for first- (LPAfl) and second-line drugs (LPAsl) providing additional drug susceptibility testing (DST) for samples that were rifampicin-resistant (RR-TB). …”
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Food acquisition and consumption by NOVA food classification and lived poverty index among rural and urban households in South Africa and Ghana by Nana Ama Frimpomaa Agyapong, Reginald Adjetey Annan, Florian Kroll, Charles Apprey, Linda Nana Esi Aduku, Robert Aidoo, Elizabeth Catherina Swart

“…Supermarkets were a prominent source of ultra-processed foods for households in South Africa, while informal outlets were an important source of ultra-processed foods in Ghana. …”
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Shaped-Pattern Reflectarray Antennas for mm-Wave Networks Using a Simple Cell Topology by Borja Imaz-Lueje, Alvaro F. Vaquero, Daniel R. Prado, Marcos R. Pino, Manuel Arrebola

“…In this paper, it is proposed the use of ultra-thin reflectarrays in some emerging scenarios in the new mm-wave cellular networks such as 5G, Beyond-5G (B5G), and future 6G. …”
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STATIC CHARACTERISTICS ANALYSIS OF SPHERICAL HYBRID SLIDING BEARINGS BASED ON CFD by LIU ShiTan, SHEN JingFeng, WANG Jian

“…Aiming at the lubrication characteristics of spherical hybrid sliding bearings（ SHSBs） for an ultra-high precision grinding machine,the Reynolds equations often adopt more assumptions,and the calculation accuracy cannot meet the design requirements of ultra-high precision bearings. …”
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Random access scheme for different MTC scenario requirement by Zhefu WU, Xinyuan YANG, Wenchao ZHAI, Huimei HAN

“…For the different random access requirements of the mixed scenarios of ultra-reliable low latency (URLLC) and massive machine type communications (mMTC) in MTC,a random access scheme based on devices grouping was proposed.The proposed scheme divided the MTC devices into several groups based on the timing advance (TA) information:for the URLLC scenario,preamble resources were reserved for core devices in each group,and the URLLC devices accessed the network via the contention-free mechanism,to satisfy the ultra-reliable low latency access requirement; for the mMTC scenario,the base station utilized the different TA information in different group to identify devices selecting the same preamble,and performed successive interference cancellation (SIC) algorithm to detect the data information,to satisfy the massive access requirement.Simulation results demonstrate that the proposed scheme can significantly increase the number of the successful devices.…”
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Analysis of the spatial distribution of metabolites in Aloe vera leaves by mass spectrometry imaging and UHPLC-UHRMS by Sumi Krupa, Tomasz Ruman, Wiktoria Szuberla, Joanna Nizioł

“…The composition was studied using two mass spectrometry imaging techniques: silver-109 nanoparticles assisted laser desorption/ionization mass spectrometry imaging (109AgNPs-LDI-MSI) and laser ablation-remote atmospheric pressure photoionization/chemical ionization mass spectrometry imaging (LARAPPI/CI-MSI) and the identification was aided by ultra-high-performance liquid chromatography and ultra-high-resolution mass spectrometry (UHPLC-UHRMS) analysis. …”
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Feasibility Study and Design of a Wearable System-on-a-Chip Pulse Radar for Contactless Cardiopulmonary Monitoring by Domenico Zito, Domenico Pepe, Bruno Neri, Fabio Zito, Danilo De Rossi, Antonio Lanatà

“…Moreover, the results obtained from the building-blocks design, the channel measurement, and the ultra-wideband antenna realization are reported.…”
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Axion-like relics: new constraints from old comagnetometer data by Itay M. Bloch, Yonit Hochberg, Eric Kuflik, Tomer Volansky

“…We show that the decade-old experimental data place the most stringent terrestrial constraints to date on ultra-light axion-like particles coupled to neutrons. …”
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The Radicalization of Neoliberalism in Brazil and the Role of the Ministry of Tourism in Coalition Presidentialism by Carolina Todesco, Rodrigo Cardoso da Silva

“…Based on the premise that the government system influences the institutional capacity of official tourism bodies, policies and public investments, the study aims to analyze how the Brazilian Ministry of Tourism was co-opted by coalition presidentialism in ultra-liberal governments, from 2016 to 2022, focusing on the distribution of ministerial positions and budget control by political parties. …”
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DESIGN,ANALYSIS AND SIMULATION OF A NOVEL QUASI-ZERO STIFFNESS VIBRATION ISOLATION SYSTEM by LAN Shuang, YANG XiaoXiang

“…The vibration simulation results prove that the quasi-zero stiffness system has greater advantage than linear system in low or ultra-low vibration isolation.…”
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A New Linear Motor Force Ripple Compensation Method Based on Inverse Model Iterative Learning and Robust Disturbance Observer by Xuewei Fu, Xiaofeng Yang, Zhenyu Chen

“…Permanent magnet linear motors (PMLMs) are gaining increasing interest in ultra-precision and long stroke motion stage, such as reticle and wafer stage of scanner for semiconductor lithography. …”
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Research and application of V2X based on MEC by Jiahui QIU, Zhichao ZHOU, Xiaobo LIN, Yu XIAO, Chao CAI, Liu LIU

“…The large-scale construction of 5G wireless communication network enhances the development of C-V2X (cellular-vehicle to everything) towards diversified directions.Large bandwidth services,such as high-definition video and AR/VR,bring great transmission and processing pressure to the classical network architecture.Meanwhile,traffic safety services characterized by ultra-high reliability and low delay put stringent requirements on network performance.The network architecture of providing services and computing localization through setting user panel down to close to the terminals and MEC (multiple access edge computing) can meet the requirements of data short loop transmission and ultra-low delay in the internet of vehicles scenario.The combination of MEC and V2X was explored in depth,the MEC networking scenario,MEC network architecture and the key technologies and challenges of MEC were analyzed.The combination scheme of MEC and C-V2X integration of network planning was provided.The application of MEC in C-V2X was presented in several specific scenarios.…”
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The First Galaxies and the Likely Discovery of Their Fossils in the Local Group by Massimo Ricotti

“…We believe that current observational data supports the thesis that a fraction of the new ultra-faint dwarfs discovered in the Local Group are fossil dwarfs and we predict the existence of a population of ultra-faint dwarfs with lower surface brightness than currently observed.…”
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