Introduction: Leachate is a liquid coming out of accumulated wet wastes which contains several chemical and dangerous elements. Furthermore, it causes the aquatic ecosystem contamination. The purpose of this study is to give an indication of the effects of Tonekabon landfill on the surface water, so evaluating the amount of leachate polluting in surface waters was investigated. Materials and M...

The recirculation system in the maintenance of tortoise will affect several water quality parameters, also known as dynamics. Water such temperature, DO, pH, turbidity, nitrate, nitrite, alkalinity, total hardness, TAN are parameters that directly related to physiological fish. purpose this study was see effect various systems on This used an experimental method with a completely randomized des...

Optimization based on appropriate parameters can be applied to improve a process. Mazut degradation as a critical issue in environment requires optimization to be efficiently done. To provide biodegradation conditions, experiments were designed on the least interactions among levels of parameters consisting of pH, Tween 80, glucose, phosphorous source, nitrogen source, and time. Kinetic constan...

There appears to be a flux of ammonium (NH(4)(+)/NH(3)) from neurons to glial cells in most nervous tissues. In bee retinal glial cells, NH(4)(+)/NH(3) uptake is at least partly by chloride-dependant transport of the ionic form NH(4)(+). Transmembrane transport of NH(4)(+) has been described previously on transporters on which NH(4)(+) replaces K(+), or, more rarely, Na(+) or H(+), but no trans...

The pH-rate profiles for hydrolysis of 4-methoxy-2-[3-(4-phenyl-1-piperazinyl)]propyl-2,3-dihydro-6-methyl-1,3-dioxo-1H-pyrrolo[3,4-c] pyridine (H) at 333, 343, 353 and 363 K over the pH range 0.4-5.0 was investigated. The decomposition was followed by the HPLC method (LiChrosorb 100 RP-18 column 250 x 4.0 mm I.D., dp = 5 microm; mobile phase: acetonitrile-phosphate buffer (pH = 2; 0.01 mole/L)...

pH has been recognized as one of the key environmental parameters with significant impacts on the nitrogen cycle in the environment. In this study, the effects of pH on NO3-/NO2- fate and N2O emission were examined with Shewanella loihica strain PV-4, an organism with complete denitrification and respiratory ammonification pathways. Strain PV-4 was incubated at varying pH with lactate as the el...

Atopic dermatitis is a form of dermatitis commonly seen in children and adults. Its pathophysiology is complex and is centered on the barrier function of the epidermis. An important aspect of the skin's barrier is pH, which in turn affects a number of parameters such as the skin flora, protease function, and mediators of inflammation and pruritus. Normal pH for non-neonatal skin is acidic and r...

Three methods of sample preparation and analysis of 150 pesticides in green beans were evaluated by LCMS/MS detection. The mass spectrometry parameters were optimized to give the best sensitivity, and two multiple reaction monitoring modes (MRMs) were chosen for quantification and conformation, based on the optimized declustering potential and collision energy. The first Quick, easy, cheap, eff...

The use of a minimum quantity of lubrication (MQL) with extremely low consumption of lubricant in machining processes has been reported as a technologically and environmentally feasible alternative to conventional flood cooling. In hot machining, the external heat source is applied during machining that will assist to increase machining performance. Many external heating techniques are availabl...