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in this paper we give a characterization for all commutative rings with $1$ whose zero-divisor graphs are $c_4$-free.
In this paper we give a characterization for all commutative rings with $1$ whose zero-divisor graphs are $C_4$-free.
abstract chickpea is weak in competition of weeds that damages to it at between 40 t0 60 percent. kermanshah province is one of the most important region for chickpea fields in iran. for these reosons, weed management is necessary in this crop. in order to evaluate of herbicides and stubble control on broad leave weeds control in chickpea. experiment was conducted in agricultural research stat...
abstract background: regarding the variety of tests present for detecting and also screening prostate cancer and also bearing in mind the advantages and disadvantages of these tests we decided to re-evaluate these tests (total prostate specific antigen and all of its modifications) in detecting prostate cancer in men with intermediate serum psalevels. methods: following a cross sectional st...
The book “Art on the Roadside. Outsider Art and Inclusive Practices in Culture of 20th Early 21st Centuries” (2022) prepared by Department Rolklore Folk State Institute Studies includes materials scientific conferences memory Dr. Ksenia Bogemskaya (1947–2010), a great researcher naive outsider art. 25 authors from different regions Russia other countries examine borderline areas art, overview i...
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