In this research, the thin films of N-S doped titanium dioxide (TiO2) were successfully prepared by simple sol-gel method in the presence of tetrabutylorthotitanate as a starting reagent. Furthermore, titanium dioxide (TiO2) was functionalized with thiourea. Furthermore, N-S doped titanium dioxides (NSTO) were fixed on glass balls by glass balls fixed-bed reactor system. Besides, the effect of ...

this paper deals with an i * corresponding author email address:   nventory system with one central warehouse and a number of identical retailers. we consider perishable-on-the-shelf items; that is, all items have a fixed shelf life and start to age on their arrival at the retailers. each retailer faces poisson demand and employs (1, t) inventory policy. although demand n...

abstractpaederus dermatitis is an irritant contact dermatitis due to accidental contact by a beetle belonging to the genus paederus. in this study, clinical efficacies of s. ebulus fruit extract solution in patients affected by paederus dermatitis were evaluated. a randomized double-blind, prospective, placebo-controlled clinical trial was performed in 62 patients with clinical symptoms and sin...

here‎, ‎we aim to develop a new algorithm for solving a multiobjective linear programming problem‎. ‎the algorithm is to obtain a solution which approximately meets the decision maker's preferences‎. ‎it is proved that the proposed algorithm always converges to a weak efficient solution and at times converges to an efficient solution‎. ‎numerical examples and a simulation study are used to...

LS techniques are based on a simple and general idea. Let P be the combinatorial optimization problem we want to solve, and s a current solution which, for the moment, we assume to be feasible for P , and to have value z(s). A neighborhood is defined for s with respect to a move type N , i.e., a function mapping s (actually, any feasible solution of P ) in a subset N (s) of the overall solution...

We define the principal matrix solution Z(t, s) of the linear Volterra vector integro-differential equation x (t) = A(t)x(t) + t s B(t, u)x(u) du in the same way that it is defined for x = A(t)x and prove that it is the unique matrix solution of ∂ ∂t Z(t, s) = A(t)Z(t, s) + t s B(t, u)Z(u, s) du, Z(s, s) = I. Furthermore, we prove that the solution of x (t) = A(t)x(t) + t τ B(t, u)x(u) du + f (...

This paper deals with an i * Corresponding author Email address:   nventory system with one central warehouse and a number of identical retailers. We consider perishable-on-the-shelf items; that is, all items have a fixed shelf life and start to age on their arrival at the retailers. Each retailer faces Poisson demand and employs (1, T) inventory policy. Although demand not met at a retai...