Eskandar Zand; Fatemeh Bena Kashani; Mohammad Ali Baghestani; Azar Maknali; Mehdi Minbashi; Saeid Soufizadeh; Reza Deihimfard
Volume 4, Issue 3 , April 2007
Alireza Astaraei; Mehrnosh Eskandari
Volume 4, Issue 2 , January 2007
Mohammad Saeid Moghaddasi; Syed Mohammad Reza Alavi Moghaddam; Reza Maknon; Abdol Reza Moghaddasi
Volume 4, Issue 2 , January 2007
Mehdi Naderi Jelodar; Abbas Esmaeili Sari; Mohammad Reza Ahmadi; Seyed Jafar Seifabadi; Asghar Abdoli
Volume 4, Issue 2 , January 2007
Shahindokht Barghjelveh
Volume 4, Issue 2 , January 2007
Majeed Javanmard; Ali Reza Bassiri
Volume 4, Issue 2 , January 2007
Mohammad Zaydi; Narges Bahzad
Volume 4, Issue 2 , January 2007
Mohammad Reza Masnavi; Hadi soltani Fard
Volume 4, Issue 2 , January 2007
Moteza Ashorlo; Abbas Alimohammadi; Parviz Ziaeian; Davoud Ashorlo
Volume 4, Issue 2 , January 2007
Saeed Motesaddi; Hamed Hadad Khodaparast; Mahdieh Boobehrezh
Volume 4, Issue 13 , October 2006
Abstract
In this research entitled noise standards for passenger cars in Iran, in order to identify the permissible levels of sound for passing-by noise and the noise from vehicle exhausts and horns, through a step processing method, at first the real current situation of vehicles was obtained through different ...
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In this research entitled noise standards for passenger cars in Iran, in order to identify the permissible levels of sound for passing-by noise and the noise from vehicle exhausts and horns, through a step processing method, at first the real current situation of vehicles was obtained through different tests carried out on 100 vehicles of different types. The results have been analyzed statistically using the ATATGRAPHICS PLUS Version 2.1 software. The second step has been the study of other countries’ standards and regulations as well as the European Commission Directives 70/15/EEC and 70/388/EEC which have formed the basis of this study. According to the test results analysed and the Directives mentioned above, the permissible sound levels that have been identified are as follows : 77 dB (A) for passing-by noise of the M1 class; 80 dB (A) for the N1class ; 86 dB (A) for exhaust noise and 87 dB(A) TO 112 dB(A) for horn noise for all types of vehicle .
Volume 4, Issue 13 , October 2006
Abstract
Developing Appropriate Strategies for the Co-management Natural Resources: Field Force Analysis of Issues and Problems of Natural Resources - A case Study of Razavar Sub-basin in Kurdistan Province
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Developing Appropriate Strategies for the Co-management Natural Resources: Field Force Analysis of Issues and Problems of Natural Resources - A case Study of Razavar Sub-basin in Kurdistan Province
Hossein Sabahi; Saeed Minoyi; Homan Liaghati
Volume 4, Issue 13 , October 2006
Abstract
Abstract The effect of green manure and crop residue (summer cover crop) on supplying nitrogen and the weed population in garlic (Allium Sativum) organic farming was the subject of this study. In a one-year experimental design, the accumulation of dry matter and nitrogen in clover (Trifolium alexandrium), ...
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Abstract The effect of green manure and crop residue (summer cover crop) on supplying nitrogen and the weed population in garlic (Allium Sativum) organic farming was the subject of this study. In a one-year experimental design, the accumulation of dry matter and nitrogen in clover (Trifolium alexandrium), Vicia (Vicica sativa) and bean (Phaseolus vulgaris) were studied as summer planting. The tuber yield of garlic cultivated following these cover crops was compared with 0, 80 and 120 Kg N ha-1 of urea. In addition, the effect of mulch from cover crops on weed biomass was evaluated. The greatest tuber yield was obtained from the 120 KgN ha-1treatment. In spite of lower nitrogen uptake in the clover treatment, the economic yield of garlic had not significantly differed. In vicia, bean and clover, the tuber yields were 7,500, 6,870, and 8,660 Kg ha-1respectively. The amount of nitrogen accumulation in clover, vicia and bean was 67.8, 40.5 and 36 Kg ha-1respectively. Due to greater residue, clover reduced weed biomass by 43%, 39% and 31% in comparison with 120, 80 and 0 Kg N ha-1 respectively. Bean and vicia, due to their lower residue production, had a smaller effect on weed growth in comparison with clover.
Malek Hossein Shahriari; Gholamreza Savaghebi- Firrozabadi; Dariush Minai-Tehrani; Mona Padidaran
Volume 4, Issue 13 , October 2006
Abstract
Abstract:Crude oil is one of the most important pollutants of the soil in the southern part of Iran. Crude oil can leak into the soil during extraction purification or or transportation. The soil contamination could damage the organisms of the soil, including plants and microorganisms. Some plants and ...
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Abstract:Crude oil is one of the most important pollutants of the soil in the southern part of Iran. Crude oil can leak into the soil during extraction purification or or transportation. The soil contamination could damage the organisms of the soil, including plants and microorganisms. Some plants and microorganisms are able to degrade the the oil in the soil. Two types of plants including legumes and grasses have higher potential to be used for phytoremediation. In the present study, the effect of mixed plant, alfalfa (Medicago sativa) and fescue (Festuca arundinacea),on phytoremediation of different concentrations of light crude oil (0-10%) in soil during 120 days was studied. Total bacterial count was higher in a vegetated sample with 7% crude oil. The oil degrading bacteria was higher than non-vegetated samples. In vegetated samples, the higher crude oil reduction was observed in sample with 1% crude oil (36.7), while the lower reduction was observed in sample with 10% crude oil (5.6). The total biomass was higher in control sample (9.6g), while it was lower in 10% sample (0.24 g). Our results showed that phytoremediation with mixed plants were not efficient in contaminated soil with more than 5% crude oil. Keywords: Phytoremediation, Crude oil, Microorganisms, Soil.
Somaye Kachooeian Javadi; Mehrdad Abbasi; Hossein Riahi; Seyed Mahmoud Mousavi
Volume 4, Issue 13 , October 2006
Abstract
The obligate phytoparasitic fungi of the orders Uredinales (Rust fungi), Ustilaginales s.lat. (Smut fungi) and Erysiphales (Powdery mildews) were studied floristically in the Jajroude Protected Area. This region is located to the East of Tehran and contains two National Parks within its borders, namely ...
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The obligate phytoparasitic fungi of the orders Uredinales (Rust fungi), Ustilaginales s.lat. (Smut fungi) and Erysiphales (Powdery mildews) were studied floristically in the Jajroude Protected Area. This region is located to the East of Tehran and contains two National Parks within its borders, namely Khojir and Sorkhe-Hessar National Parks. To assess the floristic spectrum, living materials were collected from different sites of the above mentioned area during 2003-2004. Of the 43 identified species 26 belong to Uredinales, 14 belong to Erysiphales and the remaining species (3) belong to the Ustilaginales. Identified species of rust fungi belonged to four genera, viz. Puccinia, Melampsora, Phragmidium and Uromyces. The powdery mildew specimens belonged to the genera Blumeria, Golovinomyces, Erysiphe, Leveillula and Podosphaera. Species of Ustilaginales identified also belonged to Anthracoidea and Ustilago. All 43 species are listed and discussed mainly with respect to their morphology and taxonomy. Golovinomyces riedlianus is newly reported from Iran. The spermogonia, aecial state and aecispores of Phragmidium iranicum are described for the first time. Our study showed that urediniospores of Puccinia melanographahave from 3 to 6 germ pores, either arranged equatorially or irregularly distributed over the spore surface. This character has not been previously described in detail for p < /span>. melanographa. Capparis spinosa for Puccinia trabutii(aecial stage); Rubus sanguineus for Phragmidium iranicum; Astragallus floccosus for Uromyces punctatus; Achillea wilhelmsii and Centaurea aucheri, both for Golovinomyces cichoracearum; Cousinia eryngioides and Onobrychis gaubae, both for Leveillula taurica and Euphorbia teheranica for Podosphaera euphorbiae are all reported as new hosts (matrix nova). Moreover, several new hosts for identified fungi are reported in Iran.
Yahedeh Chaghari; Fatemeh Aghayari; Gholamhossein Ebrahimpour; Hossen Shaker-Bazarnov; Francoise Bernard
Volume 4, Issue 13 , October 2006
Abstract
The Effects of Gas Oil on Germination and Seedling Development of Some Crop SpeciesZahedeh Chaghari M. Sc. Student in Plant Biotechnology and Phsiology, Faculty of Biological Sciences, Shahid Beheshti UniversityFatemeh Aghayari M. Sc. Student in Plant Biotechnology and Phsiology, Faculty of Biological ...
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The Effects of Gas Oil on Germination and Seedling Development of Some Crop SpeciesZahedeh Chaghari M. Sc. Student in Plant Biotechnology and Phsiology, Faculty of Biological Sciences, Shahid Beheshti UniversityFatemeh Aghayari M. Sc. Student in Plant Biotechnology and Phsiology, Faculty of Biological Sciences, Shahid Beheshti University Gholamhossein Ebrahimipour, Ph.D. Assistant Professor, Faculty of Biological Sciences, Shahid Beheshti University Hossein Shaker-Bazarnov, Ph.D. Assistant Professor, Faculty of Biological Sciences, Shahid Beheshti University Françoise Bernard, Ph. D. Associate Professor, Faculty of Biological Sciences, Shahid Beheshti University Abstract The aim of the study was to determine the effect of soil contamination with gas oil (4.5 g/kg soil) on the germination in Trifolium repens L., Triticum lontherium L., Hordeum vulgaris L., Medicago sativa L., Carthamus tintoriusL. and Zea mays L. Delayed seed emergence and reduced percentage germination was observed for the majority of plant species. Germination in M.sativa and T. lontheriumhad reduced significantly after 4 weeks. Fresh weight of root and shoot also reduced for all speices; but dry weight in shoot and root in Z.mays and C. tintorius increased. In other hand was the effects of high soil contamination were investigated on Maize and safflower (9, 13.5 and 22 g/kg soil). In two recent species significantly reduction in fresh weight of shoot and root was observed in 9, 13.5 g/kg soil, dry weight of shoot and root increased in Z. mays, although this increased happened only for root of C. tintorius. Keywords:, growth, hydrocarbon, phytoremediation
Abbad Shoaybi; Negin Shabani; Payam Helmi Oskuie
Volume 3, Issue 12 , July 2006
Shahin Keynoush
Volume 3, Issue 12 , July 2006
Shahindokht Barghjelveh
Volume 3, Issue 12 , July 2006
Mohsen Faizi
Volume 3, Issue 12 , July 2006
Behnaz Aminzadeh; Firoozeh Samani; Behrang Bahrami
Volume 3, Issue 12 , July 2006
Reza Cyrus Sabri; Patrick Miller; Rene Dierkx
Volume 3, Issue 12 , July 2006
Mohsen Sartipi
Volume 3, Issue 12 , July 2006
Reza Cyrus Sabri
Volume 3, Issue 12 , July 2006
Homa Irani Behbahani; Fakhri Khosravi
Volume 3, Issue 12 , July 2006
Hengameh Safa Eisini; Afshin Danehkar; Ehsan Kamrani
Volume 3, Issue 11 , April 2006