Results 21 to 30 of about 520,384 (337)

How to Model the Near-to-the-Carrier Regime and the Lower Knee Frequency of Real RF Oscillators

open access: yesJournal of Electrical and Computer Engineering, 2010
Numerous empirical data demonstrate that real noisy RF oscillators are affected by power-law phase noise. However, until recently, the robust analytic modeling of the deep-into-the-carrier spectral regime of RF oscillators was intangible due to the ...
Arsenia Chorti
doaj   +1 more source

Evaluation of Corrosion inhibition properties of pharmaceutically active compound Cefotaxime sodium on mild steel surface in sulfuric acid medium

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2021
Cefotaxime sodium is applied in various concentrations in 0.5M sulphuric acid towards the mild steel and analyzed through weight loss, potentiodynamic polarization and EIS studies at 298 to 338oK.
Sudhish KUMAR SHUKLA, Somya TANWER
doaj   +1 more source

The History of Special Education

open access: yesJournal for Perspectives of Economic Political and Social Integration, 2017
Practices of exclusion towards deviance based on prejudices or ideologies have been present in every age and in every cultural context, often taking the stigmatization process.
Rossa Carina
doaj   +1 more source

A Comparative Study of the Electrochemical Behavior of α and β Phase Ti6Al4V Alloy in Ringer’s Solution

open access: yesCrystals, 2020
Owing to their superior biocompatibility, titanium and its alloys are often the first choice for implant materials in biomedical applications, especially for dental and bone repairs (orthodontics and prosthodontics).
Monis Luqman   +6 more
doaj   +1 more source

Inhibition behaviour of mild steel by three new benzaldehyde thiosemicarbazone derivatives in 0.5 M H2SO4: experimental and computational study [PDF]

open access: yesRoyal Society Open Science, 2019
Three new benzaldehyde thiosemicarbazone derivatives namely benzaldehyde thiosemicarbazone (BST), 4-carboxyl benzaldehyde thiosemicarbazone (PBST) and 2-carboxyl benzaldehyde thiosemicarbazone (OCT) were synthesized and their inhibition effects on mild ...
H. H. Zhang   +3 more
doaj   +1 more source

Comprehensive Determination of the Hinode/EIS Roll Angle

open access: yes, 2019
We present a new coalignment method for the EUV Imaging Spectrometer (EIS) on board the Hinode spacecraft. In addition to the pointing offset and spacecraft jitter, this method determines the roll angle of the instrument, which has never been ...
Auchère, Frédéric   +7 more
core   +2 more sources

Effect of bolt rib spacing on load transfer mechanism

open access: yesInternational Journal of Mining Science and Technology, 2017
Rock bolting has firmly used as the coal mine roof reinforcement in underground coal mine. The bolting effect of fully grouted rebar bolt is closely related to the bolt surface profile.
Wu Tao, Cao Chen, Han Jun, Ren Ting
doaj   +1 more source

Layer formation by 1,7-diphosphono-heptane [PDF]

open access: yesJournal of the Serbian Chemical Society, 2001
Surface modification of polycrystalline ARMCO iron and an Fe(110) single crystal was performed using a solution of 1,7-diphosphono-heptane (DPH). The changes of the surface properties were studied by subtractively normalised interfacial Fourier ...
Póczik P.   +4 more
doaj   +1 more source

Understanding behavioural and environmental risk factors for paederus dermatitis: evidence from a case-control study in Sikkim, India, 2022

open access: yesDiscover Public Health
Background Paederus dermatitis is an acute contact dermatitis caused by exposure to Paederus insects. Sporadic cases and outbreaks have been reported globally, and environmental risk factors like climate change-induced insect habitat alteration is one ...
Nivethitha Navaneetha Krishnan   +5 more
doaj   +1 more source

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini   +6 more
wiley   +1 more source

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