let $(m^{2n},g)$ be a real hypersurface with recurrent shapeoperator and tangent to the structure vector field $xi$ of the sasakian space form$widetilde{m}(c)$. we show that if the shape operator $a$ of $m$ isrecurrent then it is parallel. moreover, we show that $m$is locally a product of two constant $phi-$sectional curvaturespaces.

in recent decades artificial neural networks (anns) have shown great ability in modeling and forecasting non-linear and non-stationary time series and in most of the cases especially in prediction of phenomena have showed very good performance. this paper presents the application of artificial neural networks to predict drought in yazd meteorological station. in this research, different archite...

statement of problem: recurrent aphthous stomatitis (ras) is one of the most common inflammatory diseases encountered in dental practice, but the precise etiology and pathogenesis of the disease is not fully understood. vascular endothelial growth factor (vegf) is a multifunctional angiogenic cytokine involved in angiogenesis and wound healing. there is evidence that vegf could play an importan...

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in this study, 2n -dimensional (n > 2) generalized conformally recurrent kaehlerian weyl spaces andgeneralized conharmonicaly recurrent kaehlerian weyl spaces are defined. it is proved that a kaehlerian weylspace is generalized conformally recurrent if and only if it is generalized recurrent.also, it is shown that akaehlerian weyl space will be generalized recurrent if and only if it is general...

introduction: injury to cranial nerves ix, x, and xii is a known complication of laryngoscopy and intubation. here we present a patient with concurrent hypoglossal and recurrent laryngeal nerve paralysis after rhinoplasty. case report: the patient was a 27-year-old woman who was candidate for rhinoplastic surgery. the next morning after the operation, the patient complained of dysphonia and a s...

background: pro-inflammatory and anti-inflammatory cytokines and polymorphisms of their genes have been described to be involved in the pathogenesis of recurrent miscarriage (rm). objective: to investigate the association between rm and five polymorphisms of cytokine genes, interleukin 10 (il-10), (-592 a/c, -819 c/t, -1082 a/g), il-6 (-174 c/g) and il-17 (-197 g/a) in iranian women. method: po...

non‑recurrent laryngeal nerve (nrln) is a rare anomaly which is reported in 0.3%‑0.8% of people on the right side and in 0.004% (extremely rare) on the left side. damage to this nerve during the surgical procedure may lead to severe iatrogenic morbidity and should therefore be prevented from being damaged. the best way to avoid this damage to the nerve is to identify the nerve with a systematic...

pterygium is characterized by an elastic degeneration of the conjunctiva that extends across the limbos and invades the cornea. the recurrence rate is varied from 25-80% after primary closure to 6% with free conjunctival and iimbal grafts. several adjunctive therapies have been investigated for recurrent pte¬rygium. this article presents a 52-year-old athletic man who was seen for evaluation of...

background: in 2-4% of couples in fertile ages, recurrent pregnancy loss (rpl) occurs which consisted one out of 300 pregnancies. the aim of this study was to comparison insulin resistance (ir) in patients with rpl to normal individuals. materials and methods: in a case-controlled, prospective study, 49 non-pregnant, non-diabetic women with early rpl as the case group and 49 non-pregnant, non-d...