نتایج جستجو برای: preservation of finite products
تعداد نتایج: 21205007 فیلتر نتایج به سال:
Brasica napus L. is one of the most important crops in the world, but every year during mechanized harvesting with conventional combines large quantities of the seeds fall to the ground and thus result in a decrease in yield. Therefore, designing and manufacturing a head specific for harvesting this crop is a high priority. In this study, the head of a combine for harvesting fine-grained produc...
فرض کنیم g یک گروه باشد و aut(g) گروه خودریختی های آن باشد.گروه gرا a(g)-گروه گوییم هرگاه مجموعه ی خودریختی های جابه جاشونده ی آن، a(g)، زیرگروهی از aut(g) باشد. گروه g راac گروه نامیم هرگاه مرکزی ساز همه ی اعضای غیر مرکزی گروه g آبلی باشد. در این پایان نامه نتایج زیر مورد بررسی قرار می گیرد: (1) مشخص نمودن کمترین مرتبه ی یک p-گروه نا a(g) برای هر عدد اول p. (2) تعیین کوچک ترین مرتبه ی یک نا...
Background: The possibility that cosmetic products may act as vehicles for pathogen transfer is a major health concern. The risk of this occurring is higher with cosmetics used around eyes, which could be responsible for a number of infectious diseases. This study was performed to evaluate the bacteriological quality of these products in Iran and also to study factors that predispose to bacteri...
We classify the sequences 〈Sn | n ∈ N〉 of finite simple nonabelian groups such that ∏ n Sn has uncountable cofinality.
Following partially a suggestion by Pyber, we prove that the diameter of product non-abelian finite simple groups is bounded linearly maximum its factors. For completeness, include case abelian factors and give explicit constants in all bounds.
There exists an absolute constant δ > 0 such that for all q and all subsets A ⊆ Fq of the finite field with q elements, if |A| > q2/3−δ , then |(A−A)(A−A)| = |{(a− b)(c − d) : a, b, c, d ∈ A}| > q 2 . Any δ < 1/13, 542 suffices for sufficiently large q. This improves the condition |A| > q2/3, due to Bennett, Hart, Iosevich, Pakianathan, and Rudnev, that is typical for such questions. Our proof ...
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