نتایج جستجو برای: soil media

تعداد نتایج: 457999  

Journal: :Journal of bacteriology 1964
S NISHIDA G NAKAGAWARA

Nishida, S. (Kanazawa University, Kanazawa, Japan), and G. Nakagawara. Isolation of toxigenic strains of Clostridium novyi from soil. J. Bacteriol. 88:1636-1640. 1964.-The cultural conditions for toxin production by Clostridium novyi were investigated, and the optimal constituents of a proper medium were determined. A comparison of the value of this medium with other media in regard to toxin pr...

Journal: :journal of ornamental plants 2015
s.m.k.h. wijayabandara j.w. damunupola s.a. krishnarajah w.a.m. daundasekera d.s.a. wijesundara

ophiopogon japonicus is a perennial, ornamental foliage plant, whichbelongs to the family liliaceae. it has a high demand in the local andinternational export market due to the presence of glossy white-green stripped lanceolate leaves. improved leaves and plants of o. japonicus will be more popular in the floriculture industry. hence, objective was to investigate the growth responses of o. japo...

Journal: :Chemosphere 2000
M A Huijbregts U Thissen J B Guinée T Jager D Kalf D van de Meent A M Ragas A W Sleeswijk L Reijnders

Toxicity potentials are standard values used in life cycle assessment (LCA) to enable a comparison of toxic impacts between substances. In most cases, toxicity potentials are calculated with multi-media fate models. Until now, unrealistic system settings were used for these calculations. The present paper outlines an improved model to calculate toxicity potentials: the global nested multi-media...

Journal: :Journal of nematology 1991
S Galper E Cohn Y Spiegel I Chet

The root-galling index of tomatoes inoculated with Meloidogyne javanica was decreased 70% when collagen was used as a soil amendment (0.1% w/w) and 90% when the amendment was supplemented with the collagenolytic fungus Cunninghamella elegans. The root-galling index was reduced 80% when the fungus was homogenized in collagen culture medium and added to soil without collagen supplement. Culture f...

ژورنال: Medical Laboratory Journal 2014
Eshraghi, SS, Fatahi, M, Habibnia, SH, Heidarieh, P, Pourmand, MR, Rasouli nasab, M,

Abstract Background and Objective: The Isolation of Nocardia species is complex and time-consuming, which is due to rapid growth of adjacent bacteria. Because of the importance of a specific medium with the ability of controlling intrusive microorganisms, this study aimed at comparing three laboratory methods to introduce the reliable isolation technique for Nocardia species. Material and Met...

Journal: :Environmental research 2008
Reeti Doshi Washington Braida Christos Christodoulatos Mahmoud Wazne Gregory O'Connor

Nano-aluminum is being used in increasing quantities as energetic material. This research addresses the transport of two types of nanosized aluminum particles (with aluminum oxide, or carboxylate ligand coating, Alex and L-Alex, respectively) through sand columns along with associated environmental impacts on soil systems. Surface phenomena and pH are variables controlling the transport of nano...

Journal: :تحقیقات آب و خاک ایران 0
مژگان بویراحمدی فایز رئیسی جهانگرد محمدی

plants and soil microbes are the main sources of most enzymes available in the environment. it is, therefore, anticipated that any change in the growth of soil biota in response to salinity, may reduce the synthesis and production of extra- and intra- cellular enzymes. as a result, a reduction in the growth of plants and the activity of soil microbes in saline environments may lessen the level ...

Numerous techniques have been presented by different researchers to analyze piled raft. In order to analyze pile foundation, soil can be modeled as spring, continuous medium, or porous media. Pile can also be modeled as spring or continuous medium. This study includes three main stages: a short description of different types of analysis methods of pile foundation, writing a computer program bas...

Journal: :پژوهش های علوم و فناوری چوب و جنگل 0

current research was aimed to study the effect of soil different treatments on seed germination and seedling survival of pinus brutia ten. seedling in nursery of koloudeh, located in amol city. seeds in plastic pots were sown at four different soil treatments including: (a) nursery soil (control), (b) control soil: cattle manure (5:1), (c) control soil: decomposited litter (5:1), (d) control so...

1999
Thomas Harter Dongxiao Zhang

Although the spatial variability of water content is expected to be significant in heterogeneous, unsaturated media, its effect on solute transport has been neglected in most stochastic analyses. In this work we develop, evaluate, and numerically verify an analytical model describing the statistical moments of water content, soil water flux, soil water velocity, and solute spreading in the unsa...

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