an investigation was made to study the residual activity and air- borne effect of pirimiphos- methyl, at 2g a.i./m2 in hut scale trials on different surfaces in kazeroun, and bandar-abbas, south of iran. in kazeroun area, bio-assay contact mortality test with pirimiphos methyl on mud, wood, cement and plaster surfaces, 54 days after hut spraying, decreased from 100% to 46.7%, 61.25%, 36.6% and ...

background and aims: whole body vibration (wbv) transmitted to drivers is one of the main reasons for several different symptoms such as musculoskeletal disorders. one of the recommendations to decrease the effects of whole body vibration is using a device that acts as an isolator. in this study, we used an air cushion as a device to decrease wbv. we measured whole body vibration transmitted to...

black tea sample was dried by a vibro-fluidized bed dryer to find its aerodynamic behavior and thermal performance during drying. the drying experiments were conducted at three different inlet air temperatures of 100, 115 and 130°c and fluidization condition at five vibration intensity levels of 0 (no vibration), 0.063, 0.189, 0.395 and 1.184. the results showed that bed channeling and defluidi...

Background and purpose: Transverse problems in the maxilla (high arched- narrow hard plates) can cause respiratory disorders. Palatal expansion can be helpful in this way. The present study aimed at evaluating the effect of bone borne expansion and tooth borne palatal expansion on airway volume. Materials and methods: A review study was performed by search in Google Scholar, Scopus, PubMed, Em...

**C. H. LEE It is well known that the major noise source of a refrigerator is the compressor, and due to the tendency of higher quality and more lighter weighty of manufactured goods, the importance of of prevention and reduction of noise is increasing. In this paper, in order to prevent and reduce such noise, sound pressure level and acoustic intensity are measured for the compressor, and the ...

original article   noise and vibration are the common problems in industrialized countries which can affect individual's job performance. the present study aimed to investigate the combination of the whole body vibration and the noise and their effects on the students' mental performance in the laboratory setting. twenty male students of tehran university of medical sciences, tehran, iran were ...

objective: due to the alarming increase the incidence and prevalence of infectious diseases and increasing bacterial resistance to antibiotics need to discover new strong antimicrobial compounds is feeling.methods: in this study, the antimicrobial properties of spider silk pholcus phalangioides produced in sterile conditions against two bacteria, listeria monocytogenes and esherichia coli with ...

mosquito borne infectious diseases are among important group of diseases worldwide. vaccination is available for some tropical mosquito-borne diseases, especially for japa-nese encephalitis virus infection and yellow fever. there are also several attempts to develop new vaccines for the other mosquito-borne diseases such as malaria, dengue infection and west nile virus infection. in this articl...