Before the 1970s, the United States sometimes disposed of at sea excess, obsolete, or unserviceable munitions, including chemical munitions. Chemical munitions known to have been disposed of at sea included munitions filled with sulfur mustard, a vesicant (i.e., an agent that causes chemical burns or blisters of the skin and mucous membranes). Signs and symptoms of exposure to a mustard agent c...

The synthesis of new chemical substances causes a number of ethical problems frequently overlooked by chemists, such as the risk associated with the creation of a new substance and the question of ultimate responsibility for a new compound. The case of the synthesis and subsequent use of Agent Orange can be used to exemplify these issues. Risk as well as responsibility for the agent have shifte...

Cellulose wastes of a wood and paper factory were used to produce activated carbon. Several chemical agents under various conditions were used for production of activated carbon and hence their adsorption properties have been evaluated. In addition the effect of process parameters such as raw material, chemical agent concentration, impregnation ratio, carbonization temperature, carbonization ti...

In this work, we report synthesis and characterization of copper nanoparticles in polymer matrix by wet-chemical reduction method using ascorbic acid as reducing agent, copper (II) sulfate as metal precursor and polyvinylpyrrolidone k-30 (PVP K-30) as surfactant agent. The reaction was carried out in a high-speed stirring mixture at room temperature under nitrogen atmosphere. Characterization o...

Chlorhexidine is one chemical plaque control agent which has various clinical applications in dentistry especially in periodontics that have come to stay that it is not inappropriate to call it the gold standard chemical plaque control agent discovered till date. After years of use by the dental profession, chlorhexidine is still considered as the gold standard against which the efficacy of oth...

purpose: to evaluate the prevalence of acute ocular chemical injuries in patients referred to labbafinejad medical center (lmc) over a period of one year. methods: all patients with chemical burns referred to lmc emergency ophthalmology service were included in the study. demographic characteristics and information regarding the burn were obtained. visual acuity assessment and slit lamp examina...

BACKGROUND In recent years, intra arterial chemotherapy has become an important component in head and neck cancer treatment. However, therapy success can vary significantly and consistent treatment guidelines are missing. The purpose of this study was to create a computer simulation of the chemical agent injection in the head and neck arteries to investigate the distribution and concentration o...

sulforaphane, an isothiocyanate found in broccoli and other cruciferous vegetables. it is an antioxidantand anti-cancer agent, and reduces blood pressure, and also has anti-allergic effects.in this article, six theoretical methods have been used for calculation of physical parameters insolforaphane and several similar compounds. we calculated physical parameters like atomic charges.energy (ae) ...

TiO2 nanoparticles, as a photocatalyst for oxidation of dimethyl methylphosphonate (DMMP) as an organophosphorus simulant of chemical warfare agent, were prepared by using sol-gel method. The prepared nanoparticles were then modified with transition metals in order to decrease the electron-hole recombination and increase the photocatalytic activity. Transition metal ions including Pt...

The conformation of alinidine a new and specific bradycardic agent was studied using MNDO method. It has been found that the rotation of both phenyl and imidazoline ring of this compound is restricted. Of two possible isomers of irnidazoline ring, the one with NH in the cis position to allyl side chain is slightly more stable. On the other hand, the allyl group can rotate freely and at leas...