Acid mine drainage (AMD) is a wastewater caused by mining activities and sulfide minerals oxidation. It occurs generally as result of the relation water, oxygen microorganisms. In this study, pH temperature samples were determined around 2 20 °C, respectively. The chemical analysis was made - ICP-MS. Sulfur concentration found in higher amounts to be 21,892 ppm, 6155 7893 31,305 ppm iron also h...

The Tinto River (Huelva, southwestern Spain) is an extreme environment with a rather constant acidic pH along the entire river and a high concentration of heavy metals. The extreme conditions of the Tinto ecosystem are generated by the metabolic activity of chemolithotrophic microorganisms thriving in the rich complex sulfides of the Iberian Pyrite Belt. Molecular ecology techniques were used t...

Lysosomotropic amines, such as ammonium chloride, are known to protect cells from the cytotoxic effects of diphtheria toxin. These drugs are believed to inhibit the transport of the toxin from a receptor at the cell exterior into the cytoplasm where a fragment of the toxin arrests protein synthesis. We studied the effects of lysosomotropic agents on the cytotoxic process to better understand ho...

BACKGROUND Local acidosis has been demonstrated in ischemic tissues and at inflammatory sites. RESULTS Acidic extracellular pH triggers NLRP3 inflammasome activation and interleukin-1β secretion in human macrophages. CONCLUSION Acidic pH represents a novel danger signal alerting the innate immunity. SIGNIFICANCE Local acidosis may promote inflammation at ischemic and inflammatory sites. L...

Aim. This study aims to evaluate the effect of acidic food simulant and (acetic acid 3%) on the shear bond strength (SBS) and adhesive remnant index (ARI) scores of one conventional and three different self-ligating brackets with different base designs. Materials and Methods. Freshly extracted first maxillary premolars (n = 160) were embedded in resin blocks. A conventional stainless steel brac...

Background: Today factors including cultural, social, religious, economic and medical such as X Linked diseases encouraged couples to choose traditional methods or new treatment for selecting the gender of child. It seems that Spermatozoa containing chromosomes X and Y have different speed in various pH. In this study the velocity of spermatozoa in different acidic pH was evaluated. Materials a...

background and objectives: the seed extract of silybum marianum contains seven flavonolignans known collectively as silymarin. these metabolites can be produced in hairy root cultures of s. marianum. the effect of different physical factors can change root biomass and silymarin production which has been investigated in the present study. methods: the effect of different physical factors of temp...

introduction: the aim of this study was to compare the chemical compounds of white proroot mineral trioxide aggregate (wmta) hydrated at different ph environments. methods and materials: mixed samples of wmta were kept in acidic (ph=5.4), neutral (ph=7.4) and alkaline (ph=9.4) environments for 48 h. then, x-ray diffraction (xrd) analysis was performed for both hydrated and powder forms of wmta....

Diabetic retinopathy is a leading cause of reduced visual acuity and acquired blindness. Available treatments are not completely effective. We analyzed the effect of environmental enrichment on retinal damage induced by experimental diabetes in adult Wistar rats. Diabetes was induced by an intraperitoneal injection of streptozotocin. Three days after vehicle or streptozotocin injection, animals...

Capsaicin evokes a membrane current in trigeminal ganglion neurons that is increased substantially in a moderately acidic extracellular environment. Using excised outside-out membrane patches, we studied the mechanism by which protons enhance the sustained response to capsaicin. In the absence of capsaicin, extracellular exposure to a moderately acidic physiological solution (pH 6.6) did not re...