An efficient N-heterocyclic carbene (NHC) catalyzed sulfenylation reaction of α,β-unsaturated aldehydes with N-(arylthio)phthalimide has been developed. A wide variety of α-thioenals can be obtained with good to excellent yields and excellent Z-configuration.

In this paper we construct a q-deformation of the Witt-Burnside ring of a profinite group over a commutative ring, where q ranges over the ring of integers. When q = 1, this coincides with the Witt-Burnside ring introduced by A. To achieve our goal we show that there exists a q-deformation of the necklace ring of a profinite group over a commutative ring. As in the classical case, i.e., the cas...

The following result is proved: Let R be a 2-torsion free semiprime ring, and let T : R → R be an additive mapping, related to a surjective homomorphism θ : R → R, such that 2T (x2) = T (x)θ(x) + θ(x)T (x) for all x ∈ R. Then T is both a left and a right θ-centralizer.

in this paper, we present the concepts of a fuzzy soft left (right) ideal and fuzzy soft interior ideal over an ordered semigroup s . some basic results of fuzzy soft left (right) ideals and fuzzy soft interior ideals are investigated and the supported examples are provided. different classes, regular, intra-regular, and simple ordered semigroups are   characterized by means of fuzzy sof...

In the light of increasing public mistrust, there is an urgent need to clarify the moral status of the medical profession and of the relationship of the clinician to his/her patients. In addressing this question, I first establish the coherence, within moral philosophy generally, of the concept of supererogation (the doing of more than one’s duty). I adopt the notion of an act of “unqualified” ...

In this paper we describe a system that uses patterns of eye blinks as a biometric. Each user chooses a personal blink pattern based on a song (for example “Jingle Bells”). To establish their identity, the user looks at the system’s camera and blinks to the cadence of their chosen song. Computer vision is used to detect the blinks and to compare the blinked cadence to a database of stored blink...

background and objectives non-traumatic acute abdominal pain is one of the most common complaints in patients referred to emergency department. to make diagnosis decision several diagnostic tests such as wbc count, urine analysis, and abdominal sonography are usually ordered which disturb emergency department, staff and force significant cost to patient and are time consuming. this study was do...