acquired bilateral longitudinal true leukonychia is a rare disorder. we present a case of a 35‑year‑old healthy woman presented with this unusual and rare manifestation. she mentioned a history of unprotected exposure to detergents and bleaching chemical agents. considering her low zinc level, she was prescribed with zinc capsules and recommended to avoid chemical substances for 6 months. durin...

purpose: to determine any possible correlation between delayed ocular complications with late-onset complications of mustard gas poisoning in other systems including skin, respiratory tract, and immunohematologic system. methods: the study was conducted on 40 chemical war victims in khorasan province, iran. ophthalmologic and dermatologic examinations and spirometry were performed for all patie...

in many processes polymeric foams can be produced by using chemical or physical blowing agents. in this work for polyethylene foam production, the chemical blowing agents and compression moulding process were employed. at first, by using dsc diagram of two polyethylene grades, a suitable polyethylene grade was selected for foam production and then we discuss about blowing agent critical percent...

Background: Developing effective methods for the synthesis of bio-compatible and non-toxic nanoparticles is the main goal of nanotechnology. In the most chemical methods, a chemical reducing agent is used to reduce metal ions. But, in chemical methods, the stability of nanoparticles is controversial and synthesis in large sizes is much more difficult. Moreover, there is an incr...

A new class of nanometer-scale, low power, solidstate devices is being investigated for the detection of CW agents and other hazardous vapors. These nanoelectronic chemical vapor sensors, or “chemiresistors” are comprised of nanometer-sized gold particles (1.2-2.4nm) encapsulated by monomolecular layers of functionalized alkanethiols (R-SH) deposited as thin films on interdigitated microelectro...

INTRODUCTION THE CHEMICAL THREAT AND ENEMY CAPABILITY THE STATUS OF CHEMICAL PROLIFERATION Chemical Warfare Capabilities of Nations International Agreements and Verification Terrorism MILITARY CHEMICAL AGENTS TACTICAL AND STRATEGIC USE OF CHEMICAL WEAPONS Chemical Agent Delivery Systems Physical Properties of Chemical Agents Strategic Concerns in the Use of Toxins Choice of Agent and Delivery S...