Characterization of semigroup by rough interval pythagorean fuzzy set

This paper expose a study on rough interval valued pythagorean fuzzy sets in semigroups. We characterize rough interval valued pythagorean fuzzy sets by an example. Characterize composition of two interval valued pythagorean fuzzy sets. Introduce rough interval valued pythagorean fuzzy left(right, bi-, interior-,(1,2)-)ideals in semigroups. Moreover we prove an interval valued pythagorean fuzzy set is an upper rough interval valued pythagorean fuzzy left(right) ideal of semigroup also we give an example for converse of this is not true. Lower and upper approximation of an interval valued pythagorean fuzzy ideal of semigroup is an interval valued pythagorean fuzzy ideal of semigroup.Publisher's Versio

Photorefractive polymeric solitons

We show the existence of photorefractive polymeric solitons in a bulk photorefractive polymer. We also show the existence of incoherently coupled two dimensional soliton pairs under steady state condition. The soliton pairs can exist under the condition that the two beams are mutually incoherent and have the same wavelength and polarization. The system was studied using the variational method and the result so obtained was analyzed using the finite-difference Beam Propagation method. Stable propagation of the soliton beam through the medium was observed

GREEN SYNTHESIS OF SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLE FROM FICUS CARICA FRUIT EXTRACT, CHARACTERIZATION STUDIES AND ITS APPLICATION ON DYE DEGRADATION STUDIES

ABSTRACTObjective: The synthesis of nanoparticles (NPs) has become a matter of great interest in recent times due to their various advantageous propertiesand applications in a variety of fields. Metal NPs are being increasingly used in many sectors, and there is growing interest in the biological andenvironmental safety of their production.Methods: In this study, iron oxide NPs (Fe3O4-NPs) were synthesized from fruits of Ficus carica using a rapid, single step and completely greenbiosynthetic method by reduction of ferrous sulfate solution with F. carica ethanolic extract. The prepared Fe3O4-NPs were investigated by X-raydiffraction, Fourier transform infrared spectroscopy, and ultraviolet-visible spectroscopy.Results: The report emphasizes the effect of superparamagnetic Fe3O4-NPs on the degradation rate of hazardous dyes acid blue.Conclusion: To conclude, Fe3O4-NPs were prepared from fruits of F. carica using a rapid, single step and completely green biosynthetic method byreduction of ferrous sulfate solution with F. carica ethanolic extract.Keywords: Ficus carica, Ethanolic extract, Reduction, Ferrous sulfate, Superparamagnetic iron oxide nano particles, Dye degradation.Â

AN ECO-FRIENDLY APPROACH FOR SYNTHESIS OF SILVER NANOPARTICLES USING Ipomoea Pes-Caprae ROOT EXTRACT AND THEIR ANTIMICROBIAL PROPERTIES

objective: Silver nanoparticles (AgNPs) were obtained through green synthesis using Ipomoea pes-caprae root extract for the first time. The activebiomolecules present in the roots of I. pes-caprae, are ergoline alkaloids, indolizidine alkaloids, benzenoids and phenolic compounds act as both thereduction and stabilization of AgNPs.Methods: The synthesized nanoparticles were characterized using UV-Visible spectroscopy, Fourier transform infra-red spectroscopy, transmissionelectron microscope (TEM).Results: A peak at 400 nm was obtained in UV-Visible spectroscopy confirmed the formation of AgNPs. TEM microgram confirms that AgNPs were inthe nano range and spherical in nature, the size was observed to be 50 nm.Conclusion: A higher zone of inhibition was observed in the AgNPs synthesized from the root extract of I. pes-caprae because of the active biomoleculescapped on the AgNPs that has greater efficacy against bacteria.Keywords: Ipomoea pes-caprae, Silver nanoparticles, Antimicrobial activity

1110 Improved real-time cine with the use of a 32-channel cardiac array and Karhunen-Loeve Transform filter

This is the author accepted manuscript. The final version is available from SAGE Publications via the DOI in this record.Leader-member exchange (LMX) theory proposes that leaders develop different quality relationships with those they manage and this is predictive of work performance. While LMX quality has been viewed as univalent (ranging from low to high quality), this paper proposes that it can also be bivalent in nature (i.e., coexisting positive and negative thoughts towards the relationship), which we refer to as LMX ambivalence. A survey measure of LMX ambivalence is developed, and through three validation and two main studies, it is shown to have construct, discriminant, and incremental predictive validity beyond that of LMX quality. Hypotheses concerning LMX ambivalence and task performance are tested in two main studies and show that (1) LMX ambivalence is negatively related to performance regardless of LMX quality, (2) high levels of perceived support from the organization (Study 1) or coworkers (Study 2) nullify the negative association between LMX ambivalence and performance, and (3) high LMX ambivalence leads to more negative affect and in turn lower task performance, but only when coworker support is low (Study 2). These results show the importance of viewing LMX quality not only in terms of its absolute level (low vs. high quality) but also as a bivalent construct where both positive and negative cognitions can coexist. They also demonstrate the value of social support in buffering the negative effects of LMX ambivalence. Furthermore, our findings extend a central tenet of LMX theory by implying that LMX quality varies not only within groups (i.e., LMX differentiation) but also within leader-follower dyads

Rapid phase-modulated water excitation steady-state free precession for fat suppressed cine cardiovascular MR

<p>Abstract</p> <p>Background</p> <p>The purpose of this article is to describe a steady-state free precession (SSFP) sequence for fat-suppressed cine cardiovascular magnetic resonance (CMR). A rapid phase-modulated binomial water-excitation (WE) pulse is utilized to minimize repetition time and acquisition time.</p> <p>Methods</p> <p>Three different water-excitation pulses were combined with cine-SSFP for evaluation. The frequency response of each sequence was simulated and examined in phantom imaging studies. The ratio of fat to water signal amplitude was measured in phantoms to evaluate the fat-suppression capabilities of each method. Six volunteers underwent CMR of the heart at 1.5T to compare retrospectively-gated cine-SSFP with and without water-excitation. The ratio of fat to myocardium signal amplitude was measured for conventional cine-SSFP and phase-modulated WE-SSFP. The proposed WE-SSFP method was tested in one patient referred for CMR to characterize a cardiac mass.</p> <p>Results and discussion</p> <p>The measured frequency response in a phantom corresponded to the numerical Bloch equation simulation demonstrating the widened stop-band around the fat resonant frequency for all water-excitation pulses tested. <it>In vivo </it>measurements demonstrated that a rapid, phase-modulated water-excitation pulse significantly reduced the signal amplitude ratio of fat to myocardium from 6.92 ± 2.9 to 0.8 ± 0.13 (mean ± SD) without inducing any perceptible artifacts in SSFP cine CMR.</p> <p>Conclusion</p> <p>fat-suppression can be achieved in SSFP cine CMR while maintaining steady-state equilibrium using rapid, phase modulated, binomial water-excitation pulses.</p

Cardiac function and myocardial perfusion immediately following maximal treadmill exercise inside the MRI room

Treadmill exercise stress testing is an essential tool in the prevention, detection, and treatment of a broad spectrum of cardiovascular disease. After maximal exercise, cardiac images at peak stress are typically acquired using nuclear scintigraphy or echocardiography, both of which have inherent limitations. Although CMR offers superior image quality, the lack of MRI-compatible exercise and monitoring equipment has prevented the realization of treadmill exercise CMR