Water absorption

This study also contributes to reducing environmental pollution caused by plastic and glass waste as well as current construction brick production methods. The results show that the bulk density, compressive strength, and bending strength of brick samples made from PET plastic and glass waste are higher than those of burnt clay brick samples, while water absorption is much smaller than that of burnt clay brick samples.

8p viengfa 28-10-2024 0 0   Download

This study presents an experimental investigation on the recycling of waste incineration bottom ash (IBA) as a fine aggregate in the production of interlocking concrete bricks (ICB). Before being used, the concentration of heavy metal in IBA was determined to confirm it is a non-toxic material.

12p vifilm 24-09-2024 3 1   Download

Drying shrinkage is the main cause of early age cracking of concrete and mortar. A wide range of research has been conducted to reduce the drying shrinkage, including using fibres or chemical admixtures. This paper investigated the effect of shrinkage reducing admixture on the flexural strength, compressive strength, drying shrinkage, water absorption and porosity of mortar.

13p vifilm 24-09-2024 2 1   Download

In this study, we investigate using acrylic and acrylic-styrene emulsions as curing solution to enhance water resistance and prevent cracking in cement concrete surfaces. Our main objective is to investigate the possibilities of utilizing washing waste generated during the Rhomn & Haas factory - Dow Chemical Vietnam production process. This waste is currently being treated as solid even though it contains anywhere from 10 – 45 % solid content.

13p xuanphongdacy06 18-09-2024 1 1   Download

Wastes generated from healthcare practices are a serious problem for humans as well as for the environment. In this study, an attempt was made to use mixed solid medical waste (WPN) which consisted of shredded waste plastic and chopped waste needles for partial replacement of natural fine aggregate (sand) in concrete mixes at 0%, 2%, 4%, 6%, 8% and 10% by weight.

13p vifaye 20-09-2024 2 1   Download

The effect of limonene on physicochemical properties of starch-based films (moisture absorption, solubility in water, wettability, mechanical properties) were compared to glycerol plasticized system.

8p tocectocec 25-05-2020 11 2   Download

This is the basis for the choice of soil treatment, irrigable water or the choice of plants with capacity of absorbing the desired metal to clean up arable land. Moreover, because it costs much money and time to handle soil, water in current conditions, we envisage the results of this kind of research will initially provide the basis for the selection of plant varieties suitable for the soil conditions and current pollution.

8p meolep3 18-12-2018 21 0   Download

When water or soil has the presence of a metal at a certain level, the metal can inhibit or stimulate the absorption of other metals in plants. Therefore, the study on competitive absorption among metals in plants is very necessary. The aim of this study is to find out the competitive absorption between Cu2+ and Pb2+ from polluted soil to lettuce.

7p estupendo5 31-08-2016 39 1   Download

Hydrogels composed of polyvinyl pyrrolidone (PVP), polyethylenglycol (PEG) and kappacarrageenan (KC) were prepared by radiation crosslinking method. The equilibrium water absorption of hydrogel PVP/KC (A) and PVP/PEG/KC (B) were 45 and 85 g(H2O)/g dried gel, respectively. The n values of the equation Mt /M = ktn were determined to be of 0.6396 for hiđrogel A and 0.9984 for hydrogel B. The water transport mechanism follows the fickian diffusion for hydrogel A, while relaxation diffusion is dominated for hydrogel B. The water vaporization of hiđrogels was also investigated.

4p uocvong04 24-09-2015 43 3   Download

A method for determination of arsenic species in environmental samples have been studied (water and sediment of Nhatrang onshore). The analytical method used was ion-exchange liquid chromatography coupled on-line to atomic absorption pectrometry through hydride generation. It was applied to determination of As species in H3PO4+NH2OH.HCl extracts of sediments. The efficiency of this extraction procedure was studied in details. The sensibility of this investigated method allows both the analysis of As-poor samples and the dilution extracts, of As-rich ones.

12p uocvong01 24-09-2015 85 4   Download

Metformin (1,1-dimethylbiguanide) is an antihyperglycae-mic drug used to normalize glucose concentrations in type 2 diabetes. Furthermore, antioxidant benefits have been reported in diabetic patients treated with metformin. This work was aimed at studying the scavenging capacity of this drug against reactive oxygen species (ROS) like Æ OH and O Æ
2 -free radicals. ROS were produced by gamma radio-lysis of water. The irradiated solutions of metformin were analyzed by UV/visible absorption spectrophotometry.

8p awards 05-04-2013 60 1   Download

A Abatement: Reducing the degree or intensity of, or eliminating, pollution. Abatement Debris: Waste from remediation activities. Absorbed Dose: In exposure assessment, the amount of a substance that penetrates an exposed organism's absorption barriers (e.g.,, skin, lung tissue, gastrointestinal tract) through physical or biological processes. The term is synonymous with internal dose. Absorption Barrier: Any of the exchange sites of the body that permit uptake of various substances at different rates (e.g., skin, lung tissue, and gastrointestinal-tract wall).

217p holigon10 15-06-2012 472 150   Download

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài:Chemical composition of the periderm in relation to in situ water absorption rates of oak, beech and spruce fine roots...

10p toshiba4 20-09-2011 48 3   Download

Tuyển tập các báo cáo nghiên cứu khoa học trên tạp chí khoa học vật lý quốc tế đề tài: Effect of Treated and Untreated Filler Loading on the Mechanical, Morphological, and Water Absorption Properties of Water Hyacinth FibersLow Density Polyethylene Composites

12p hoami_266 15-09-2011 74 7   Download

Why do objects lose their color with depth? The colors other than blue (and green) are absorbed by the water molecules in the first few meters only blue (and green) are reflected Sound is transmitted better Sound is transmitted better in water than it is in air Sound velocity in the ocean is about 1500 m/s, or about 4 times its speed in air Sound velocity increases with pressure and temperature

37p thachthaoxanh 24-08-2011 56 5   Download

Diarrhea Enteral feeding often leads to diarrhea, especially if bowel function is compromised by disease or drugs, particularly broad-spectrum antibiotics. Diarrhea may be controlled by the use of a continuous drip, with a fiber-containing formula, or by adding an antidiarrheal agent to the formula. However, Clostridium difficile, which is a common cause of diarrhea in patients being tube fed, should be ruled out before using antidiarrheal agents. H2 blockers may also assist in reducing the net fluid presented to the colon.

4p konheokonmummim 03-12-2010 90 4   Download