Results 1 to 10 of about 7,226,515 (300)

Research Progress on CO2 and H2S Corrosion Prediction Models in Sour Gas Field [PDF]

open access: yesCailiao Baohu, 2022
 The corrosion rate prediction models about CO2 corrosion and CO2/H2S coexistence system were summarized, and the modeling ideas, factors considered, limitations of various models were expounded.
WANG Yan - ran, XIAO Jie, FAN Yong - zhao, ZHANG Yin - hui, TIAN Yuan, LI Shan
doaj   +1 more source

Impact of aerosol optics on vertical distribution of ozone in autumn over Yangtze River Delta [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
Tropospheric ozone, an important secondary pollutant, is greatly impacted by aerosols within boundary layer (BL). Previous studies have mainly attributed ozone variation to either aerosol–BL or aerosol–photolysis interactions at the near-surface level ...
S. Yan   +6 more
doaj   +1 more source

Visual-simulation region proposal and generative adversarial network based ground military target recognition

open access: yesDefence Technology, 2022
Ground military target recognition plays a crucial role in unmanned equipment and grasping the battlefield dynamics for military applications, but is disturbed by low-resolution and noisy-representation.
Fan-jie Meng   +4 more
doaj   +1 more source

Vehicle Detection in Congested Traffic Based on Simplified Weighted Dual-Path Feature Pyramid Network With Guided Anchoring

open access: yesIEEE Access, 2021
In modern life, traffic congestion is widespread in large and medium-sized cities in various countries. Multi-scale vehicle targets are densely distributed and occluded from each other in the images of crowded scenes.
Jingqing Luo   +4 more
doaj   +1 more source

Improving the energy release characteristics of PTFE/Al by doping magnesium hydride

open access: yesDefence Technology, 2022
Magnesium hydride (MgH2) was doped into PTFE/Al to improve the energy release characteristics of the material system and strive for better application in military engineering. Five types of PTFE/Al/MgH2 reactive materials with different MgH2 content were
Jia-xiang Wu   +8 more
doaj   +1 more source

Field PMU Test and Calibration Method—Part II: Test Signal Identification Methods and Field Test Applications

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
Synchrophasor measurement units (PMUs) provide synchronized measurement data for wide-area applications. To improve the effectiveness of synchrophasor-based applications, field PMUs must be tested to ensure their performance and data quality.
Sudi Xu, Hao Liu, Tianshu Bi
doaj   +1 more source

Bioassay suitable for determining the susceptibility of Meligethes aeneus to organophosphates

open access: yesJournal für Kulturpflanzen, 2010
Bioassay procedures were developed for determining the susceptibility to organophosphates of oilseed rape pollen beetles. Technical-grade and formulated chlorpyrifos-ethyl were tested using single applications of a series of different dosages.
Thomas Thieme   +5 more
doaj   +1 more source

An Observational Test of Two-field Inflation [PDF]

open access: yes, 2002
We study adiabatic and isocurvature perturbation spectra produced by a period of cosmological inflation driven by two scalar fields. We show that there exists a model-independent consistency condition for all two-field models of slow-roll inflation ...
A. Taruya   +30 more
core   +2 more sources

Field-test of a robust, portable, frequency-stable laser [PDF]

open access: yes, 2011
We operate a frequency-stable laser in a non-laboratory environment where the test platform is a passenger vehicle. We measure the acceleration experienced by the laser and actively correct for it to achieve a system acceleration sensitivity of $\Delta f
Baumann   +25 more
core   +1 more source

Recent aflatoxin levels in maize, feed mixtures, milk and cheese in Serbia [PDF]

open access: yesZbornik Matice Srpske za Prirodne Nauke
Aflatoxins are the most widespread mycotoxins primarиly produced by fungi of the genus Aspergillus such as A. flavus and A. parasiticus, infecting grains during storage, spices, nuts, milk and animal feed.
Jauković Marko M.   +2 more
doaj   +1 more source

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