نتایج جستجو برای: medium sand
تعداد نتایج: 263517 فیلتر نتایج به سال:
Glauconite is a micaceous mineral that could be source of potassium. The aim of this study was evaluation of the effects of glauconitic sandstone and potential of iron relase and toxicity in case of using as a potassium fertilizer for canola plants. The plants cultivation experiments were carried out in growth chamber in sand culture with completely randomized design as factorial. The first fac...
In ostriches, the toes are the only body parts that contact loose sand surfaces. Thus, toe interphalangeal joint motions may play vital biomechanical roles. However, there is little research on ostrich phalangeal joint movements while walking or running on sand. The results from the three-dimensional motion track analysis system Simi Motion show that gait pattern has no significant effect on th...
anxiety is one common disorder during childhood. in curing anxiety disorders, there are different types of psychological remedies, pharmotherapy, family therapy, and music therapy that can improve the individual’s anxiety, but we need some other remedies to improve social and emotional relationship and interactions. considering the importance of curing the anxiety disorders, the effect of sand ...
Pyrolysis of kitchen based vegetable waste (KVW) was studied in a designed packed bed reactor. The effect of process parameters like temperature, time and catalyst on bio-gas yield and its composition was studied. The total bio-gas yield was found to be maximum with non-catalysed operation (260ml/g) at 1073K (180min). Higher hydrogen (H(2)) yield with non-catalysed operation (32.68%) was observ...
The two well known techniques which are used in plant-nutrition studies are conveniently designated the solution-culture method and the sand-culture method. Some other slightly soluble materials, such as cinders, gravel, vermiculite, and Sponge Rok or various combinations of these may be substituted for sand. The use of slightly soluble material as a medium, to which the nutrient solution is pr...
This laboratory study examined the use of various wood materials as a carbon source in horizontal flow filters to denitrify nitrate-nitrogen (NO3-N) from a synthetic wastewater. The filter materials were: sawdust (Pinus radiata), sawdust and soil, sawdust and sand, and medium-chip wood chippings and sand. Two influent concentrations of NO3-N, 200 mg L(-1) and 60 mg L(-1), loaded at 2.9 to 19.4 ...
In silver cypress (Cupressus arizonica), rooting of cuttings is not easily possible. To optimize the rooting properties of cuttings of this plant, a factorial experiment was conducted as multi-factor, based on a completely randomized block design with 4 replications and 4 cuttings in each replicate. In this study, four different types of cuttings (consisting of above-terminal, above-basal, belo...
Recently, Hilhorst (2000) presented a theoretical model describing a linear relationship between bulk electrical conductivity, o0, and dielectric constant, K„, in moist soil. Hilhorst (2000) found that using this linear relationship, measurements of the pore water electrical conductivity, ap, can be made in a wide range of soil types without soil-specific calibrations. If accurate measurements ...
BACKGROUND Stigmaeids mites have been recorded only on Phlebotominae sand flies up to now. Five species of Eustigmaeus, and three of Stigmaeus were reported on infested sandflies in different country up to the present. METHODS Sand flies collection was done using CDC light trap and sticky paper. The mites were isolated from infested specimens, mounted in Puri's medium and identified using rel...
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