aminostyryl)quinoline (4M20) in mice (3, 10) indicated that the compound had certain radiomimetic effects. It was also noted that lens cataracts occurred in animals surviving the acute effects (5). A striking nonradio mimetic feature of the acute lesions was the marked hepa totoxic effect of the drug. This was manifested by fatty liver and necrosis of liver cells during the 1st week, followed b...

Preparation of new polymer (polyurethane)+ceramic nanohybrids for filling dental cavities is reported. Short curing times (below 10 min) are achieved. Some tribological properties are determined and compared with those of commercial dental materials. The new materials provide scratch resistance as well as good adhesion to dentin and enamel, low toxicity and high chemical resistance; additionall...

in the shafaroud forest, logging operation is generally performed by using selective cutting methods. chainsaw and cable skidder are two main forest machines for harvesting of this forest. however, forest harvesting operations result in serious residual stand damage during felling, winching and skidding operations in this forest. residual stand damage resulting from selective cutting was assess...

the parallel systems are special important types of coherent structures and have many applications in various areas.in this paper we consider a two-exchangeable-component parallel system for the generalized farlie-gumbel-morgenstern (generalized fgm) distribution. we study the reliability properties of the residual lifetime of the system under the condition that both components of the system ar...

background and objectives: sodium nitrite and potassium nitrite have been traditionally used for inhibition of clostridium botulinum and also as an agent to stabilize the color of meat products; however, usage of these additives at high levels could lead to toxicity and cancer originating from the formation of nitrosamines. nowadays, application of natural preservatives in order to reduce the n...

toxicity of spinosad was primarily evaluated with three bioassay methods: feeding, spraying (residual exposure) and combination with larval medium against one susceptible and one field population. feeding method was selected as efficient method for survey of susceptibility or resistance of seven field populations. in feeding bioassay method, spinosad ld50 of susceptible strain at 24h and 72h we...

An evaluation of the toxic effects of three organophosphates; monocrotophos, dimethoate and methyl parathion on female reproduction was made by biochemical estimations of cytoplasmic and membrance bound proteins, lipids, phospholipids and cholesterol in the rat ovaries after treatment with their low residual level doses (LD50 1/8-1/5) to three groups of six rats each for 90 days. All the three ...

Plants are attacked by various phytopathogenic fungi. For many years, synthetic fungicides have been used to control plant diseases. Although synthetic fungicides are highly effective, their repeated use has led to problems such as environmental pollution, development of resistance, and residual toxicity. This has prompted intensive research on the development of biopesticides, including botani...

Antibodies raised in heterologous species against tumorassociated antigens such as ferritin and carcinoembryonic antigen may be utilized in diagnostic scanning and in cancer therapy. The radiolabeled (131I)antibodies have a mean effec tive half-life of 3 days. The tumor-bearing regions retain activity which was associated with objective evidence of remission in primary hepatic cancers. Major or...