to assess the effects of livestock grazing on soil compaction (density changes), the trampling action of livestock was simulated. the research field was located to the south west of nazarabad in savojbolagh district, south west of tehran province. samples were annually collected based on a completely randomized design. from the triple regions (reference, key and critical) 36 cylindrical cores w...

Bu çalışmada, ıhlamur (Tilia rubra subsp. caucasica) çiçek ektraktı indirgeyici ve kaplayıcı ajan olarak kullanılarak mikrodalga ile gümüş nanopartiküller (AgNP’ler) sentezlenmiştir. AgNP’lerin optimum üretim miktarını elde etmeyi amaçlayan dört farklı sentez değişkeninin birleşik etkisini araştırmak için Tepki Yüzey Metodolojisinin Yüz Merkezli Merkezi Kompozit Tasarımı kullanıldı. Araştırılan...

The research presents the problem of liquidation dumps substandard raw materials zeolite-containing rocks Holinsky deposit, measures for reclamation disturbed lands. most effective way to restore ecosystems is renaturation. Time intervals succession are considered. Renaturation lands consists 6 stages. Possible dominant plants proposed options considered in detail: Stipa lessingiana, Poa platen...

The type specimens of Tenthredo sensu lato deposited in the Hungarian Natural History Museum (Budapest) are reviewed. The following synonyms are recognized and discussed: Rhogogastera aenescens Mocsáry, 1909, syn. nov. of Tenthredo (Temuledo) finschi finschi W.F. Kirby, 1882; Macrophya prasinipes Konow, 1891, syn. nov. of Macrophya caucasica (Mocsáry, 1880); Tenthredo concinnoides Malaise, 1945...

abstract. the purpose of this study was to investigate the effects of topographical factors on the classification of grassland plant communities in the rangelands of ghorkhud, northern khorasan province, iran. for sampling, land units were specified. a floristic list was prepared using minimal area method based on the nested plot (braun-blanquet method). 116 10m2 furrows were selected. within e...