Results 81 to 90 of about 639,476 (304)

Hydrogen Sulfide Removal from Flare Gas

Gases
Flaring is necessary to prevent pressure buildup in the unit. Due to hydrotreatment processes at the refinery, flare gas can contain significant amounts of hydrogen sulfide. Combusting this gas can result in environmental and health issues. One method to
Yousef Alqaheem
doaj   +1 more source

ProSeal TM laryngeal mask airway cuff pressure changes with and without use of nitrous oxide during laparoscopic surgery

Journal of Anaesthesiology Clinical Pharmacology, 2013
Background: The ProSeal TM laryngeal mask (PLMA) is increasingly being used as an airway device for laparoscopic surgery. Its silicone cuff allows diffusion of nitrous oxide, carbon dioxide and other gases with resultant rise in its intracuff pressure ...
Bimla Sharma, Rajat Gupta, Raminder Sehgal, Archna Koul, Jayashree Sood   +4 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

A Correction for the Cylinder Wall Adsorption in Forensic Ethanol Gas Standards

Gases
Forensic ethanol gas standards are used for, among other things, the calibration and metrological verification of evidential breath analysers as described in OIML-R126 Evidential breath analysers.
Adriaan M. H. van der Veen, Gerard Nieuwenkamp, Nilenska Martina, Jianrong Li   +3 more
doaj   +1 more source

Development of methodologies for reactions involving gases as reagents: microwave heating and conventionally-heated continuous-flow processing as examples

Green Processing and Synthesis, 2012
Microwave (MW) heating and conventionallyheated continuous-flow processing have emerged as viable alternatives to the traditional methods of preparing organic compounds.
Mercadante Michael A., Leadbeater Nicholas E.   +1 more
doaj   +1 more source

Qualidade bromatológica das silagens de cana-de-açúcar (Saccharum officinarum L.) aditivadas com raspa de batata Bromatologic quality of sugarcane (Sacharum officinarum L.) silages added with potato scrapings

Ciência e Agrotecnologia, 2009
A raspa de batata foi misturada à cana-de-açúcar (Saccharum officinarum L.) na ensilagem. A colheita da cana-de-açúcar de ano foi realizada manualmente a uma altura de 10 cm da superfície do solo. As misturas cana-de-açúcar e raspa de batata foram feitas
Adauton Vilela de Rezende, Ricardo Rodrigues, Adauto Ferreira Barcelos, André Oliveira Casali, Alexandre Rocha Valeriano, Lucilene Tavares Medeiros   +5 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Introducing CdZnTe Detectors into Measuring ²²²Rn Concentrations in Water

Gases
Radon (222Rn) is a noble, radioactive gas and tends to be accumulated in poorly ventilated enclosed spaces. Mainly due to its radioactive daughters and the α-particles emitted, 222Rn poses a risk of cancer and therefore its concentration in air and water
Ioannis Kaissas, Konstantinos Karafasoulis, Aris Kyriakis, Panagiotis Papaprokopiou   +3 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Variation in Total Volatile Organic Compounds and Health Risk Assessment Across Different Hair Salons

Gases
Workers are exposed to pollutants generated by hair salon activities, which may pose potential health risks. This study measured volatile organic compound (VOC) concentrations in five hair salons using a high-sensitivity photoionization detector (PID ...
Naput Fuangfu, Aekkhaluck Intharuksa, Yaowatat Boongla   +2 more
doaj   +1 more source