Results 21 to 30 of about 32,791 (255)

Three-dimensional positioning algorithm based on TDOA and AOA in coal mine underground

Gong-kuang zidonghua, 2015
In view of problem that positioning accuracy of existing underground positioning algorithm is difficult to meet actual demand, a three-dimensional positioning algorithm based on TDOA and AOA used in coal mine underground was proposed combining with ...
WANG Feng, SHANG Chao, JI Jincheng, NIE Baisheng, QIAO Tiezhu, ZHANG Xueying   +5 more
doaj   +1 more source

Biotransformation of lincomycin and fluoroquinolone antibiotics by the ammonia oxidizers AOA, AOB and comammox: A comparison of removal, pathways, and mechanisms.

Water Research, 2021
In this study, we evaluated the biotransformation mechanisms of lincomycin (LIN) and three fluoroquinolone antibiotics (FQs), ciprofloxacin (CFX), norfloxacin (NFX), and ofloxacin (OFX), which regularly enter aquatic environments through human activities,
Lijun Zhou, P. Han, Mengyue Zhao, Yaochun Yu, Dongyao Sun, L. Hou, Min Liu, Qiang Zhao, Xiufeng Tang, U. Klümper, J. Gu, Y. Men, Qinglong L. Wu   +12 more
semanticscholar   +1 more source

Niche differentiation of ammonia-oxidizing archaea and related autotrophic carbon fixation potential in the water column of the South China Sea

iScience, 2022
Summary: The significant primary production by ammonia-oxidizing archaea (AOA) in the ocean was reported, but the carbon fixation process of AOA and its community composition along the water depth remain unclear.
Jiapeng Wu, Yiguo Hong, Xiang He, Xiaohan Liu, Jiaqi Ye, Lijing Jiao, Yiben Li, Yu Wang, Fei Ye, Yunhua Yang, Juan Du   +10 more
doaj   +1 more source

LoRay: AoA Estimation System for Long Range Communication Networks

IEEE Transactions on Wireless Communications, 2021
In this paper, we introduce a comprehensive angle of arrival (AoA) estimation solution for the long range (LoRa) communication network. Termed the LoRa array (LoRay), the proposed system constitutes hardware and software solutions to estimate the AoA of ...
Noori Bnilam, Dennis Joosens, Michiel Aernouts, J. Steckel, M. Weyn   +4 more
semanticscholar   +1 more source

Wireless Sensor Network Localization Using AoA Measurements With Two-Step Error Variance-Weighted Least Squares

IEEE Access, 2021
We propose a novel localization method using angle-of-arrival (AoA) measurements with two-step error variance-weighted least squares (TELS). The first step is to estimate a terminal location provisionally using least squares.
Futa Watanabe
semanticscholar   +1 more source

Variation, distribution, and diversity of canonical ammonia-oxidizing microorganisms and complete-nitrifying bacteria in highly contaminated ecological restoration regions in the Siding mine area

Ecotoxicology and Environmental Safety, 2021
Canonical ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB) and complete-nitrifying bacteria (comammox) exist in a variety of ecosystems.
Yi Li, Ying Liang, Haichun Zhang, Yuan Liu, Jing Zhu, Jie Xu, Zhenming Zhou, Jiangming Ma, Kehui Liu, Fangming Yu   +9 more
doaj   +1 more source

Cascade AOA Estimation Algorithm Based on Flexible Massive Antenna Array

Sensors, 2020
The Angle-of-Arrival (AOA) has a variety of applications in civilian and military wireless communication fields. Due to the rapid development of the location-based service (LBS) industry, the importance of the AOA estimation technique has increased ...
Tae-yun Kim, Suk-seung Hwang
doaj   +1 more source

Clinical Evaluation of a Multi-Omic Diagnostic Model for Early-Stage Ovarian Cancer Detection

Diagnostics
Background/Objectives: Ovarian cancer (OC) is frequently diagnosed at an advanced stage due to the nonspecific nature of its symptoms. While population-wide screening has failed to reduce mortality, timely diagnosis in symptomatic women remains a ...
Robert A. Law, Brendan M. Giles, Rachel Culp-Hill, Enkhtuya Radnaa, Mattie Goldberg, Charles M. Nichols, Maria Wong, Connor Hansen, Collin Hill, Katrin Eurich, Emily Prendergast, Kian Behbakht, Benjamin G. Bitler, Anna Jeter, Vuna S. Fa, James Robert White, Kevin Elias, Abigail McElhinny   +17 more
doaj   +1 more source

Is there any effect on imprinted genes H19, PEG3, and SNRPN during AOA?

Open Medicine, 2022
Assisted oocyte activation (AOA) has been proposed as an effective technique to overcome the problem of impaired fertilization after intracytoplasmic sperm injection (ICSI) but the safety of AOA remains a concern.
Liang Rong, Fang Fang, Li Sen, Chen Xi, Zhang Xiaohong, Lu Qun   +5 more
doaj   +1 more source

AoA and RSSI-Based BLE Indoor Positioning System With Kalman Filter and Data Fusion

IEEE Internet of Things Journal
This work aims at improving indoor positioning systems (IPS) by integrating multiple radio frequency techniques, namely received signal strength indiction (RSSI), Angle of Arrival (AoA), and a combination of both, within the bluetooth low energy (BLE) 5 ...
Andrey Fabris, Ohara Kerusauskas Rayel, João Luiz Rebelatto, Guilherme Luiz Moritz, Richard Demo Souza   +4 more
semanticscholar   +1 more source