bloody nipple discharge in infancy has rarely been reported in medical literature. we report a 7 month-old female infant with a one month history of bilateral nipple discharge. endocrinologic and hematological workups were within normal limits. breast ultrasonography showed two non-echogenic cystic areas in each breast. the problem resolved after a period of observation. this is a benign condit...

For little q-Jacobi polynomials and q-Hahn polynomials we give particular q-hypergeometric series representations in which the termwise q = 0 limit can be taken. When rewritten in matrix form, these series representations can be viewed as LU factorizations. We develop a general theory of LU factorizations related to complete systems of orthogonal polynomials with discrete orthogonality relation...

Using of nanofluids and ducts with corrugated walls are both supposed to enhance heat transfer, by increasing the heat transfer fluid conductivity and the heat transfer area respectively. Use of a diverging duct with a jet at inlet section may further increase heat transfer by creating recirculation zones inside the duct. In this work two-dimensional incompressible laminar flow of a nanofluid e...

congenital nasolacrimal duct obstruction (cnldo) is a common disease in children. the classic treatment of cnldo is probing that was done around one year old. however, controversy exists regarding the outcome of probing in children older than one year. this study aimed to find the cure rate of initial probing for cnldo and identify factors producing the failure rate in old age. in this retrospe...

purpose : rhinoplasty is one of the most common cosmetic surgeries. lateral osteotomy is one of the surgical steps used in rhinoplasty. there are several procedures to determine the tear passage time through nasolacrimal duct (nld) such as dacryocystography, dacryoscintigraphy, taste test, etc. one of the useful tests which can be used for determination of tear passage through nld is dripping o...

background: considerable attention is focused on effects of electromagnetic field (emf) and its increasing use in everyday life. appliances and various equipments are sources of electromagnetic fields with a wide-range of technical characteristics. objective: in this study we investigated the effect of emf (50 hz, 0.5 mt) on epididymis and deferens duct in mice. materials and methods: 30 balb/c...

let r and s be reduced rings with identities whose idempotents are central, and let m be an(r, s)-bimodule such that annr (m)=0. in this paper, we determine first the structure of automorphisms ofthe triangular ring, =sr mt0, and then, for all automorphisms α ,β of t we determine the structureof (α,β)-derivations of t.

The main purpose of this paper is to determine the fine spectrum of the generalized upper triangular double-band matrices uv over the sequence spaces c0 and c. These results are more general than the spectrum of upper triangular double-band matrices of Karakaya and Altun[V. Karakaya, M. Altun, Fine spectra of upper triangular doubleband matrices, Journal of Computational and Applied Mathematics...