The road conservation activities allow to maintain the characteristics of platform elements ensure that vehicle mobility is carried out comfortably and safely. orographic conditions Spain, with a large length high mountain roads others at sea level; winter weather events, low temperatures, thermal gradients, wind, water, ice, snow… which cause deposits particles, filler, soils, small metals, or...

the purpose of this experiment was to evaluate the effects of salinity on growth parameters and intestine morphology of the caspian white fish. experiment were used with four treatments include,(freshwater (0ppt), brackish water (5ppt), abrupt transition of fish to the salt water 10ppt: )the fish were transferred from fresh water to salt water immediately) and gradual transition of fish to the ...

Impacts of salinity become severe when the soil is deficient in oxygen. Oxygation (using aerated water for subsurface drip irrigation of crop) could minimize the impact of salinity on plants under oxygen-limiting soil environments. Pot experiments were conducted to evaluate the effects of oxygation (12% air volume/volume of water) on vegetable soybean (moderately salt tolerant) and cotton (salt...

The demand for salinity-tolerant turfgrasses is increasing due to augmented use of effluent or low-quality water (sea water) for turf irrigation and the growing turfgrass industry in coastal areas. Experimental plants, grown in plastic pots filled with a mixture of river sand and KOSAS(R) peat (9 : 1), were irrigated with sea water at different dilutions imparting salinity levels of 0, 8, 16, 2...

A solvent system consisting of ethyl acetate, ethyl alcohol and water, in the volume ratio of 4.5:4.5:1, was developed and used to extract, at room temperature, betulin from white birch bark and antioxidants from spices (rosemary, thyme, sage, and oregano) and white oak chips. In addition, under reflux conditions, trimyristin was extracted from nutmeg using the same solvent system, and eugenol ...

8 [1] Salt marshes are often dissected by a network of 9 channels formed by tidal oscillations and related water 10 fluxes. In this note we present a stochastic model able to 11 simulate the formation and evolution of tidal networks in 12 salt marshes. The model is based on a simplification of the 13 shallow water equations that enables the determination of 14 the water surface gradients on the...

Weanling male rats of Wistar strain were divided into 3 groups and housed in cages with wire bottoms. The rats of group 1 were fed on control diet having the following composition: vitamin free casein, 18; sucrose, 46; glucose, 23; salt mix ture,* 4; soybean oil, 6; vitamin mixture, 1: and agar powder 2. The vitamin mixture was prepared as follows (in mg/1008 of diet): thiamine HCl, 2,4; ribofl...

Introduction: Cadmium is recognized worldwide as a toxic metal. In this study, Solvent-Assisted Dispersive Solid Phase Extraction (SA-DSPE) combined with Flame Atomic Absorption Spectrometry (FAAS), was used for determination of trace amounts of Cadmium (Cd-II)) in drinking water samples. Correspondence: Omid Rahmanian, PhD. ...

beta-Peptides have attracted considerable attention by virtue of their ability to populate helical secondary structures in methanol, even in the absence of stabilizing tertiary interactions. Recent efforts in beta-peptide design have produced few beta3-peptides that form stable 14-helices in water; those that do require stabilizing intramolecular salt bridges on two of three helical faces and t...

The ability of West Indian manatees (Trichechus manatus) to move between fresh and salt water raises the question of whether manatees drink salt water. Water turnover rates were estimated in captive West Indian manatees using the deuterium oxide dilution technique. Rates were quantified in animals using four experimental treatments: (1) held in fresh water and fed lettuce (N=4), (2) held in sal...