Liquid oxygen

B.Result and discussion Percentage air voids On the replacement of cupola slag we obtained the result that, on the percentages of 10, 20, 30 and 40 we have the Va values of 4.8, 4, 4.8 and 3.2 % which satisfies the morsth requirement of 3-5% and further we observed that the gradual decrease in the Va values up to 100%. So that for Va the replacement of cupola slag up to 40 % will satisfies the morsth requirement. Percentage of voids in mineral aggregate On the replacement of cupola slag we…

Introduction 1.1 Polyurethane polyurethanes were first developed by Otto Bayer and coworkers in 1937. Shortly thereafter, Schollenberger and coworkers used formula modification to prepare elastomeric polyurethane products from Bayer's products that were like nylon or other engineering plastics in physical characteristics. PUs are widely used in coatings, flexible and rigid foams, elastomers, and composites. Reasons for the use of polyurethane coatings include: high performance characteristics…

more independent of particle size. Calcium phosphate cement containing an antibiotic can be used for filling bone defects and to ensure local antibiotherapy. Therefore, in the present chapter proposal, cement paste were prepared by combining cement liquids comprised of Na2HPO4 with cement powders. Gentamicin sulfate was also loaded on the cements and its in vitro release was evaluated over a period of time. The cement setting times were compared before and after drug addition. According to…

ABSTRACT Dex-Ibuprofen–polyethylene glycol (PEG) conjugates (PEG-dex-Ibu) were organized and their prospective as a prolonged release method was investigated. PEG-Dex-Ibuprofen conjugates were synthesized as of Ibuprofen and PEG with 4000 Da molecular weights by esterification in the incidence of DCC and DMAP. The PEG-dex-Ibu conjugates were characterized by FT-IR, 1H NMR, and DSC analysis. The solubility revise in aqueous system showed an improvement within the solubility of conjugates. The…

and was slightly short of breath. He still felt sick to his stomach as well. Due to his shortness of breath he was his arterial oxygen saturation was checked and it was at 84% when he was…

The heart works by pumping the blood throughout the internal circulatory system to deliver the oxygen and nutrients to the body cells. There are some features about the heart which allows more efficient respiration system. The heart have a left atrium and left ventricle. The left side of the heart is called systemic circulation which only pumps the…

air heating up and getting warmer, the water temperatures are heating up to, which is very bad for trout who have evolved to only live in cool water; trout are uncomfortable in water above about 20°C. When water temperature heats up it doesn’t allow oxygen to dissolve into the water like it should,…

van der Waals equation offers two important improvements. The prediction of liquid behavior is more accurate because volume approaches a limiting value 'b' at high pressures i.e, lim┬(p=∞)⁡〖V(p)=〗 b…

4. Why PdO/TiON NP powders are chosen as photocatalyst? There are many reasons why PdO/TiON NP powders are chosen as a photocatalyst for MTBE mineralization under visible light. These reasons are listed and discussed as follows: 1- The synergistic effect. 2- The ease of synthesis. 3- The memory effect. 4.1 The synergistic effect Nowadays, modified TiO2 by metal and nitrogen is considered as one of the most promising TiO2 based materials for photocatalytic applications, which is able to…

Diels-Alder Reaction Objective: The objective of this lab was to do a diels-alder reaction using anthracene, maleic anhydride, and xylene to create 9,10-dihydroanthracene, 10-, -succinic acid anhydride. Experimental: Anthracene (1.00g, 5.61x 10-3 mol), maleic anhydride (0.75g, 7.61x 10-3 mol), xylene (5mL, 4.71x 10-2 mol), and a stir rod were added into a round-bottomed flask. The round-bottom flask was then moved to the hood where the it was attached to a distillation column, placed on…