Pressurized hot water extraction (PHWE) has become a popular green extraction method for different classes of compounds present in numerous kinds of matrices such as environmental, food and botanical samples. PHWE is also used in sample preparation to extract organic contaminants from foodstuff for food safety analysis and soils/sediments for environmental monitoring purposes. The main paramete...

Introduction: Radon-222 gas is a radioactive, colorless and odorless element that can cause lung cancer and stomach in humans with alpha-ray emissions. An important source of Radon-222 is the output water in springs, especially hot springs to emit ionision radiation. In this study, Rn-222 activity concentration and gamma dose rate levels in water sample of some selected hot spr...

the effect of hot water treatments [45°c for five minutes, 55°c for 25 seconds and non-treated(control)], salicylic acid in three levels (0, 1 and 2 mm) and calcium chloride in two levels (2% and 4%) on quantitative and qualitative parameters and storage life of pomegranate cv. meykhosh were investigated. experiment was conducted as a factorial based on completely randomized design with three r...

The influence of dipping in hot salt solution on water absorption in nylon6 composites with dispersed aluminum powders was investigated. Dipping in hot salt solution (3mass%NaCl in distilled water) for 10 s at 373K increased the overweight of composite samples, whereas the addition of aluminum with dispersed powders (A1-addition) from zero to 40 vol%Al decreased the overweigh of the sample. Bas...

Background Scalds from domestic hot water are an important public health problem in New Zealand (NZ). Aims We aimed to study the hot water hazard in a yet unstudied setting: that of campgrounds. Methods Convenience sampling was performed involving 25 NZ campgrounds. These were sampled during summer months over a 4-year period (2008–2011) and in five different regions. We measured the temperatur...

Phytochemicals of mushrooms are nutritionally functional and a source of physiologically beneficial medicines. In the present study, crude hot water; cold water extracts of Calocybe indica was qualitatively screened for the presence of phytochemicals. Hot water extracts showed the presence of many phytochemicals like polysaccharide, phenol, flavonoids, alkaloid, terpenoid and saponin when compa...

Cellular damage caused by reactive oxygen species has been implicated in several diseases and hence antioxidants have significant importance in human health. Cold water, hot water and methanolic extract of Pleurotus squarrosulus were evaluated for antioxidant activity against hydroxyl radical, DPPH (1,1-Diphenyl-2-picrylhydrazyl) radical, superoxide radical, nitric oxide (NO) scavenging, reduci...

This paper presents investigative results of the energy efficiency of hot water production for sanitary uses by means of gas-fired water heaters with the combustion chamber sealed with respect to the room in single-family houses and multi-story buildings. Additionally, calculations were made of the influence of pre-heating the air for combustion in the chimney and air supply system on the energ...

Pistachio green kernel, is obtained by removing the red testa of around the whole kernel. In this study, the suitable peeling conditions for removing the testa of the kernel were determined using hot water in five termperature levels of 75, 80, 85, 90, and 95°C and diffetent hot water immersion times of 2, 4, 6, 8, and 10 minutes in riped and unripe samples. Quality factors including the number...

Legionella are widely distributed in natural and man-made environments. In these environments, legionella can utilize metabolic products excreted by blue-green algae and other general bacteria, on the other hand they can multiply intracellularly within amoebaebody. The major infection route of legionella is via 1-5 |Lim diameter aerosols which contain the legionella and reach humanalveolar sept...