For rat pituitary cells, progesterone receptor (PR) protein localizes to gonadotropes and PR messenger RNA is induced by E2 and rapidly but transiently down-regulated by progesterone. Here we quantitatively establish the down-regulatory effect of progesterone on PR protein and evaluate possible mechanisms. Nuclear PR-immunoreactivity (PR-IR) in gonadotropes, identified by dual immunofluorescenc...

Knoevenagel condensation between barbituric acid and aldehyde was investigated in the presence of sulfonic acid functionalized nanoporous silica (SBA-Pr-SO3H) and resulted in the formation of arylidene and bis-arylidene barbiturates. Excellent yields and short reaction times are related to the high efficiency of SBA-Pr-SO3H that the reactions take place easily in its nano-pores. SBA-Pr-SO3H as ...

In standard treatments of probability, Pr(A|B) is defined as the ratio of Pr(A intersectionB) to Pr(B), provided that Pr(B)>0. This account of conditional probability suggests a psychological question, namely, whether estimates of Pr(A|B) arise in the mind via implicit calculation of Pr(A intersectionB)/Pr(B). We tested this hypothesis (Experiment 1) by presenting brief visual scenes composed o...

Fix > 0, and let p1 = 2, p2 = 3, . . . be the sequence of all primes. We prove that if (q, a) = 1, then there are infinitely many pairs pr, pr+1 such that pr ≡ pr+1 ≡ a mod q and pr+1 − pr < log pr. The proof combines the ideas of Shiu and of Goldston–Pintz–Yıldırım.

One of the basic principles behind conditioning is that “conditioning on a high-probability event keeps things reasonably unchanged; however, if we condition on a low-probability event, then all bets could be off”. More precisely, suppose we wish to estimate Pr[A | B]. Note, in general, that this could be less than, equal to, or greater than Pr[A]. We now prove that if Pr[B] is “high”, then Pr[...

Introduction: Different etiologies of pleural effusion are diagnosed based on serum and plural fluid characteristics. The aim of this study was to assess and compare the serum and pleural fluid protein to lactate dehyrogenase (Pr/LDH) ratio in exudative pleural effusions. Materials and Methods: This study was conducted on 60 patients with exudative pleural effusion including: 20 cases with para...