air conditioning is widely applied for the improvement of standard of living in human life. this present investigation focused on the prediction of indoor air quality characteristics of air conditioned car using fuzzy logic algorithm. the conditioned space was selected and the experiments were planned as per design of experiments to study the effect of human load, fresh air supply and air veloc...

awareness of the effects of fire on various aspects of an ecosystem after the fire,is important for range management. changes in soil physical and chemical propertiescaused by fire can be the cause of changes in the vegetation. in this study, effects of fire onphysical and chemical characteristics of soil were investigated. this research was carriedout in a randomized block design method in the...

The field study was conducted in one district of Educational-Experimental forest at Tehran University (Kheirood-Kenar forest) in the North of Iran. Eighty-five soil profiles were dug in the site of study and several chemical and physical soil properties were considered. These factors included: soil pH, soil texture, bulk density, organic carbon, total nitrogen, extractable phosphorus and depth ...

The aim of this research was to compare the amounts of existing mineral elements in plant aerial parts, litter and soil ofthree range species (Bromus tomentellus, Psathyrostachys fragilis, Agropyron tauri) in order to investigate the litter effectof species on soil properties of Taleghan rangeland. The measured mineral elements include carbon, nitrogen,phosphorous and potassium. After selection...

food preservation has always been a concern for mankind. different methods have been developed to preserve food for long periods, such as cold storage, plastic covers, and modified atmospherethis study examined the physicochemical and biological effects of a modified atmosphere on packaged romaine lettuce at three levels (g1: 40% oxygen, 15% carbon dioxide, 45% nitrogen; g2: 70% oxygen, 15% car...

present research was conducted with the aim of determination of significant effect of soil properties on natural regeneration of haloxylon aphyllum and correlation coefficient and linear relation between soil variables and natural regeneration of haloxylon aphyllum. firstly, geomorphologic units were prepared in the areas under cultivation of haloxylon aphyllum in ardestan. two cultivated lands...

Analysis of data from the Centraal Bureau voor de Statistiek in the Netherlands showed that the suicide rate by domestic gas dropped from 1958 to 1975 as the percentage of carbon monoxide in domestic gas was reduced. Suicide by all other methods rose more sharply during the latter part of this period, suggesting that people may have switched methods for suicide.

OBJECTIVES To assess respiratory morbidity over several cross sectional phases in the European carbon black manufacturing industry. METHODS Participants completed an amended (and translated) MRC respiratory morbidity questionnaire with additional questions on previous exposures, job history, etc, and spirometry traces in each phase. Concurrent with the health outcome measures, personal exposu...

A group of 16 male youth with spastic diplegy of lower extremities were examined. Their mean age was 18.5 years, body height 166.5 ± 6,6 cm, and body mass 57.4 ± 7,7 kg. They were subjected to a graded cycle ergometer arm exercise until exhaustion. The following indices of the circulatory and respiratory systems at maximum intensity and at the ventilatory threshold (VT) were recorded: percentag...

Soybean (Glycine max) seeds store significant amounts of their biomass as protein, levels of which reflect the carbon and nitrogen received by the developing embryo. The relationship between carbon and nitrogen supply during filling and seed composition was examined through a series of embryo-culturing experiments. Three distinct ratios of carbon to nitrogen supply were further explored through...