A large amount of collectors, inhibitors and modifiers such as oleic acid, water glass sodium carbonate are added to the flotation processing tungsten ore, resulting in difficulty suspended solids (SS) with residual settling down wastewater. The removal efficiency is low commonly used reagents like polyaluminium chloride (PAC) polyacrylamide (PAM). This paper innovatively applied calcium (CaCl2...

This study was conducted during two successive seasons 2005 and 2006 by using "Desert Red" peach cultivar (Prunus persica L.) grafted on Nemaguard rootstock. Trees were sprayed with a hand sprayer to the run off at the initiation of phase ΙΙΙ of the double sigmoid curve before the onset of the climacteric. The treatments included putrescine at 5 and 10 mM, GA3 at 200 and 400 ppm, in addition to...

The different adsorption applications require the development of sorbents with predetermined properties. One ways for fine tuning properties material is using a binary salt system as an active sorbing component. aim this work to conduct precision investigation thermodynamic data on sorption equilibrium composite “(CaCl2 + CaBr2) confined silica gel pores” water vapour. isotherms and isosteres (...

This comparative study was aimed at estimating analytical behavior of methods for determination plant available potassium applied to Bulgarian arable soils and reveal the relationship between amount extractable K. Twenty-four samples from two traditional agricultural regions in Bulgaria were studied. Soil extracted by NH4OAc/HOAc pH 4.5 (AA), diluted double acid (Mehlich 1), CaCl2, BaCl2 a modi...

The aim of this study was to compare what changes are caused by high doses of cholecalciferol (100,000 UI vD3) and CaCl2 on thyroid parafollicular (C) cells and airways neuroendocrine (NE) cells in rat. Overdosage of vD3 and CaCl2 causes hypocalcaemia and strong hypercalcitoninemia in blood; C cells showed mainly signs of hypertrophy; simultaneously, the number of strong calcitoninpositive cell...

Drugs and solutions All tissues were perfused and maintained with KRB solution containing (mmol/liter): 120.35 NaCl, 15.5 NaHCO3, 5.9 KCl, 1.2 MgCl2, 1.2 NaH2PO4, 2.5 CaCl2, and 11.5 glucose. The KRB solution warmed to a physiological temperature of 37 ± 0.2°C and bubbled with a mixture of 97% O2–3% CO2. For experiments using external solutions with zero [Ca]o, CaCl2 was omitted and 1 mM EGTA w...

The extractability of collagen was examined in different sites of amnion and chorion from term deliveries. Sequential extraction with NaCl, acetic acid and CaCl2 showed that soluble collagen accounted for 1.5% of the proteins extracted. Saline extracted more collagen from the amnion than from the chorion. Acetic acid and CaCl2 extracted decreasing and increasing amounts of collagen from the amn...