In this paper chemical amount rate to the exposed organism was examined. Dose characterizs the total amount of material to which an organism is exposed. The aim of this paper dynamic cumulative toxic effect was investigated. Single dosing and n-times dosing changes are expressed. This paper different routes of exposure and frequency of exposure were involved. Toxic effects also depend of the se...

The requirements for dental material include not toxic, not irritant, no carcinogenic potential, nor cause an allergic response with the use in oral cavity. The cyanoacrylate restoration material has certain substance that can be toxic. Because of the ratio amount of powder and liquid is not known, it can lead the restoration more toxic. The purpose of this study was to know the cytotoxicity of...

Introduction Many of the substances used as food additives possess no outstanding toxic property; others which may be used as adjuncts in processing may be toxic but are present in the food only in very small quantities. The study of non-toxic substances resolves itself into the problem of trying to prove a negative. An experimental investigation of the toxicity of many of the chemicals used in...

Introduction Many of the substances used as food additives possess no outstanding toxic property; others which may be used as adjuncts in processing may be toxic but are present in the food only in very small quantities. The study of non-toxic substances resolves itself into the problem of trying to prove a negative. An experimental investigation of the toxicity of many of the chemicals used in...

In this Research Article, the name of one author (Yogeshwer D. More) was spelled incorrectly. The correct spelling should read as follows: Yogeshwar More addition, a footnote including statement for equal contribution two authors missing. line and affiliations Sahel Fajal,[a] Writakshi Mandal,[a] Samraj Mollick,[a,+] More,[a,+] Arun Torris,[b] Satyam Saurabh,[a] Mandar M. Shirolkar,[c] Sujit K....

as soon as it appeared that the extremely stable PCB's became a threat to the environment and its wildlife, and accidents occurred of acute poisoning in man and animals. These studies have been made with material with different contents of chlorine, from different manufacture, and-as we can now say in retrospect-with different and unknown contents of toxic impurities. For this reason the toxico...

The preparation of purified antigenic materials from cultures of Eberthella typhosa (1, 2) has demonstrated that substances of relative purity, and high antigenic and toxic activity, may be isolated for study. In investigations utilizing a synthetic medium for the culture of E. typhosa (3), which eliminates the possibility of non-specific contaminating materials (derived from the culture medium...

background: due to the increasing pollution of water resources, this study was carried out for evaluation of water quality pollution indices for monitoring of heavy metals (as, zn, pb and cu) contamination in ghahavand plain, hamadan province, western iran during spring and summer 2012. methods: totally, 20 ground water wells were chosen randomly. the samples were filtered (0.45 μm) and maintai...