In the present paper laminar flow forced convective heat transfer of CuO/water nanofluid in a Triangular Duct under constant wall temperature condition is investigated numerically. Sometimes, because of pressure drop limitations the need for noncircular Ducts arises in many heat transfer applications. We used nanofluid instead of pure fluid because of its potential to increase heat transfer of system. In this paper, the effect of parameters such as nanoparticles diameter, nanoparticles concentration, type of nanoparticles and heat transfer comparison between nanofluid and pure fluid is studied. Comparison of convective heat transfer of nanofluid in isosceles Triangular Ducts with various apex angles is also presented. In this study, for the presence of nanoparticles, the dispersion model and for solving differential equations, the finite difference method is used. Numerical results indicate an enhancement of heat transfer of fluid with changing to the suspension of nanometer-sized particles in the Triangular Duct. Results also defined that equilateral Triangular Duct has a maximum heat transfer in comparison with other types of isosceles Triangular Duct.

Ejaculatory Duct obstruction (EDO) underlies 1-5% of male infertility, although the diagnosis of EDO can be complex, treatment is well established and can be very effective.Part of reason that this condition probably is underdiagnosed, is because of its rarity, subtle presentation and the concomitantly low index of suspicion held by physicians.The causes of EDO are divided into congenital and acquired disorders. Clinically, EDO classically presents as hematospermia, painful ejaculation, or infertility.In the past decade, trans rectal ultrasound (TRUS) has replaced vasography as the main stay of diagnosis. Several adjunctive techniques now have been described for diagnosis of EDO, including seminal vesicle aspiration, seminal vesiculography, vesicle chromotubation.The time- tested treatment for EDO is resection of the ejaculatory Ducts (TUR-ED), which is performed in an outpatient setting, and the technique combines cystourethroscopy with resection of the verumontanum in the midline.Complications from TUR-ED occur in 10-20% of the cases, and include watery ejaculate, hematuria, epididimitis, seminal vasculitis and low risk of incontinence or rectal perforation.

A Triangular tile latching system consists of a set $\Sigma$ of equilateral Triangular tiles with at least one latchable side and an attachment rule which permits two tiles to get latched along a latchable side. In this paper we determine the language generated by a Triangular tile latching system in terms of planar graphs.

A watching system in a graph G=(V, E) is a set W={w1, w2, …,wk}, where wi=(vi, Zi); viÎ V and Zi is a subset of closed neighborhood of vi such that the sets LW(v) ={wi: vÎZi} are non-empty and distinct, for any v ÎV. In this paper, we study the watching systems of line graph Kn which is called Triangular graph and denoted by T (n). The minimum size of a watching system of G is denoted by w (G). We show that w (T(n))= [2n/3].

In this paper, the hydraulic characteristics of a sharp crested Triangular side weir have been experimentally studied. It was found that the DeMarchi coefficient of discharge for a sharp crested Triangular side weir in subcritical flow is related to the main channel Froude number, the apex angle of weir and ratio of weir height to upstream depth of flow. Suitable equations for discharge coefficient are also obtained.