Results 1 to 10 of about 14,114 (198)

Reduce power loss in distribution grid considering the installation efficency of distributed generators

Tạp chí Khoa học và Công nghệ
This paper proposes an algorithm to reduce the power loss in distribution grids. The suggested method is based on the distributed generator installation.
Phan Dinh Chung
doaj   +1 more source

Community composition of ammonia-oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zones

Frontiers in Microbiology, 2013
Ammonia-oxidizing archaea (AOA) have been reported at high abundance in much of the global ocean, even in environments, such as pelagic oxygen minimum zones (OMZs), where conditions seem unlikely to support aerobic ammonium oxidation.
Xuefeng ePeng, Amal eJayakumar, Bess B Ward   +2 more
doaj   +1 more source

Niche Differentiation of Bacterial Versus Archaeal Soil Nitrifiers Induced by Ammonium Inhibition Along a Management Gradient

Frontiers in Microbiology, 2020
Soil nitrification, mediated mainly by ammonia oxidizing archaea (AOA) and bacteria (AOB), converts ammonium (NH4+) to nitrite (NO2−) and thence nitrate (NO3−).
Di Liang, Di Liang, Yang Ouyang, Lisa Tiemann, G. Philip Robertson, G. Philip Robertson   +5 more
doaj   +1 more source

Effects of α-aminooxyacetic acid on the level of polyamines, anthocyanins and photosynthetic pigments in seedlings of common buckwheat (Fagopyrum esculentum Moench)

Acta Societatis Botanicorum Poloniae, 2011
The present paper discusses the effects of α-aminooxyacetic acid (AOA) on contents of polyamines, anthocyanins, photosynthetic pigments and phenylalanine ammonia-lyase activity in seedlings of common buckwheat (Fagopyrum esculentum Moench).
Marcin Horbowicz, Ryszard Kosson, Danuta Koczkodaj, Lesław B. Lahuta   +3 more
doaj   +1 more source

Drivers of archaeal ammonia-oxidizing communities in soil

Frontiers in Microbiology, 2012
Soil ammonia-oxidizing archaea (AOA) are highly abundant and play an important role in the nitrogen cycle. In addition, AOA have a significant impact on soil quality.
Kateryna eZhalnina, Patricia eDörr de Quadros, Patricia eDörr de Quadros, Flavio eA. O. Camargo, Eric W Triplett   +4 more
doaj   +1 more source

Effect of Angle of Attack on Pressure and Lift Coefficient of ONERA OA206 Wing Model Using Computational Fluid Dynamics Method

Computational and Experimental Research in Materials and Renewable Energy, 2019
In this study, we computed the lift force of the aircraft with ONERA OA206 airfoil type. It was positioned at 0%, 25%, 50%, 75%, and 100% of the wingspan for Angle of Attack (AoA) variations of 0o, 4o, 8o, 12o, and 16o.
Resti Anggraeni
doaj   +1 more source

Artificial oocyte activation may improve embryo quality in older patients with diminished ovarian reserve undergoing IVF-ICSI cycles

Journal of Ovarian Research, 2022
Background Artificial oocyte activation (AOA) is used to improve fertilization rate following fertilization failure after intracytoplasmic sperm injection (ICSI). Several studies have also shown that AOA may be involved in embryo development.
Tzung-En Tsai, Pei-Hsuan Lin, Pei-Fen Lian, Chia-Jung Li, Salvatore Giovanni Vitale, Mislav Mikuš, Wan-Ping Su, Hsiao-Wen Tsai, Kuan-Hao Tsui, Li-Te Lin   +9 more
doaj   +1 more source

Constrained Weighted Least-Squares Algorithms for 3-D AOA-Based Hybrid Localization

IEEE Open Journal of Signal Processing
Source localization with time-of-arrival (TOA), time-difference-of-arrival (TDOA), time-delay (TD), received-signal-strength (RSS), or angle-of-arrival (AOA) measurements from several spatially distributed sensors is commonly used in practice.
Yanbin Zou, Wenbo Wu, Jingna Fan, Huaping Liu   +3 more
doaj   +1 more source

Dilution of Precision in Positioning Systems Using Both Angle of Arrival and Time of Arrival Measurements

IEEE Access, 2020
Dilution of precision (DOP) is a value that can describe the effect on the relationship between measurement error and position determination error.
Binghao Li, Kai Zhao, Xuesong Shen
doaj   +1 more source

“Ca. Nitrosocosmicus” members are the dominant archaea associated with plant rhizospheres

mSphere
Archaea catalyzing the first step of nitrification in the rhizosphere possibly have an influence on plant growth and development. In this study, we found a distinct archaeal community, dominated by ammonia-oxidizing archaea (AOA), associated with the ...
Ui-Ju Lee, Joo-Han Gwak, Seungyeon Choi, Man-Young Jung, Tae Kwon Lee, Hojin Ryu, Samuel Imisi Awala, Wolfgang Wanek, Michael Wagner, Zhe-Xue Quan, Sung-Keun Rhee   +10 more
doaj   +1 more source