Results 11 to 20 of about 9,705,182 (259)

Engine Performance with Diesel-Biodiesel Blends Fuel and Emission Characteristics [PDF]

open access: yesEngineering and Technology Journal, 2020
In this study, the sunflowers oil was utilized as for producing biodiesel via a chemical operation, which is called trans-esterification reaction. Iraqi diesel fuel suffers from high sulfur content, which makes it one of the worst fuels in the world ...
Marwa Kareem, Adel Saleh
doaj   +1 more source

State-Public Management of Vocational and Pedagogical Education in the Region [PDF]

open access: yesARPHA Proceedings, 2019
The relevance of the study is due to the positioning of teacher education as a state-public system. The purpose of the article is to develop a mechanism of state-public management of vocational and pedagogical education in the region.
I. Terentyeva, N. Pugacheva, A. Lunev
doaj   +3 more sources

Co/AlP/Co, Co/GaN/Co as magnetic tunnel junctions

open access: yes, 2021
AlP and GaN are wide band-gap semiconductors (SC) uses in opto-electronic industry as light emitting diodes. Here we investigate it as future perspective candidate for insulating barrier in magnetic tunnel junctions. We employ density functional theory for ground state electronic properties and non-equilibrium Green's function method for quantum ...
Shukla, Gokaran   +2 more
openaire   +2 more sources

High‐resolution stimulated Raman spectroscopy of low‐frequency rotational transitions: Obtention of collisional broadening coefficients in the rotational S branch of CO perturbed by H2

open access: yesJournal of Raman Spectroscopy, Volume 54, Issue 10, Page 1099-1113, October 2023., 2023
This paper demonstrates the application of high‐resolution quasi‐continuous stimulated Raman spectroscopy to the study of low‐wavenumber rotational transitions, down to ~11.5 cm−1. With this capability, we have been able to measure collisional broadenings in the pure rotational Raman spectrum of CO perturbed by H2 from lines S(0) to S(20) at 77, 180 ...
Denís Paredes‐Roibás   +1 more
wiley   +1 more source

Contaminación atmosférica y calidad del aire en Madrid: Análisis de las concentraciones de SO2, CO, NO2, ozono y PM10 (1980-2003)

open access: yesEstudios Geográficos, 2005
[es] En este artículo analizamos la calidad del aire en Madrid a partir de los límites propuestos por la Directiva europea (1999/30/EC) para el SO2, CO, NO2, ozono y PM10.
Felipe Fernández García
doaj   +1 more source

Short‐Term Effects of Carbon Monoxide on Morbidity of Chronic Obstructive Pulmonary Disease With Comorbidities in Beijing

open access: yesGeoHealth, Volume 7, Issue 3, March 2023., 2023
Abstract The association between CO and chronic obstructive pulmonary disease (COPD) has been widely reported; however, the association among patients with type 2 diabetes mellitus (T2DM) or hypertension has remained largely unknown in China. Over‐dispersed generalized additive model was adopted to quantity the associations between CO and COPD with ...
Zhiwei Li   +8 more
wiley   +1 more source

Formation of Lean Premixed Surface Flame Using Porous Baffle Plate and Flame Holder

open access: yesJournal of Thermal Science and Technology, 2013
A lean premixed surface flame has many advantages including low CO(Carbon Monoxide) and NOx(Nitrogen Oxide) emission and applicability of a small combustion volume leading to compact design.
Pil Hyong LEE, Sang Soon HWANG
doaj   +1 more source

Determining Urban Development Orientation Based on Air Pollution Diffusion Modeling from Thermal Power Plants, Case Study: Mashhad [PDF]

open access: yesتحقیقات کاربردی علوم جغرافیایی, 2023
There are several limiting factors to the development of cities. These factors lead cities to develop in certain directions. Air pollution as a major problem of metropolises can itself be considered as a limiting factor of urban development by urban ...
mohammadamir moharreri   +3 more
doaj  

Experimental study on the influence law of different stresses on coal autoxidation

open access: yesMeikuang Anquan, 2023
In order to study the influence of stress on the coal autoxidation, a set of test device was designed for the influence law of stress on coal autoxidation.
ZHAI Xiaowei, ZHANG Yuchen, LUO Jinlei
doaj   +1 more source

Nicotine free herbal composition for smoking de-addiction - A placebo controlled, double blind, randomized, multicentric clinical study

open access: yesJournal of Pharmacy and Bioallied Sciences, 2023
Background: Smoking is a major predisposing factor for many health problems including cancers, vascular disorders, etc., To quit smoking is the only solution to prevent them.
Sanjay Motilal Tamoli   +8 more
doaj   +1 more source

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