Construction of k-Hyperideals by P-Hyperoperations

In this note we present a method to construction new k-hyperideals from given k-ideals of a semiring R by using of the P-hyperoperations. Then we investigate the relationship between them. In particular, we describe all khyperideals of the semihyperring of the nonnegative integers

Homomorphism and quotient of fuzzy k-hyperideals

In [15], we introduced the notion of weak (resp. strong) fuzzy k- hyperideal. In this note we investigate the behavior of them under homomorphisms of semihyperrings. Also we define the quotient of fuzzy weak (resp. strong) k-hyperideals by a regular relation of semihyperring and obtain some results

Rough sets applied in sublattices and ideals of lattices

The purpose of this paper is the study of rough hyperlattice. In this regards we introduce rough sublattice and rough ideals of lattices. We will proceed by obtaining lower and upper approximations in these lattices

Synthetic dye decolorization by three sources of fungal laccase

Decolorization of six synthetic dyes using three sources of fungal laccase with the origin of Aspergillus oryzae, Trametes versicolor, and Paraconiothyrium variabile was investigated. Among them, the enzyme from P. variabile was the most efficient which decolorized bromophenol blue (100%), commassie brilliant blue (91%), panseu-S (56%), Rimazol brilliant blue R (RBBR; 47%), Congo red (18.5%), and methylene blue (21.3%) after 3 h incubation in presence of hydroxybenzotriazole (HBT; 5 mM) as the laccase mediator. It was also observed that decolorization efficiency of all dyes was enhanced by increasing of HBT concentration from 0.1 mM to 5 mM. Laccase from A. oryzae was able to remove 53% of methylene blue and 26% of RBBR after 30 min incubation in absence of HBT, but the enzyme could not efficiently decolorize other dyes even in presence of 5 mM of HBT. In the case of laccase from T. versicolor, only RBBR was decolorized (93%) in absence of HBT after 3 h incubation. © 2012 Forootanfar et al.; licensee BioMed Central Ltd

Predictors of curve flexibility in adolescent idiopathic scoliosis: A retrospective study of 100 patients

Curve flexibility in adolescent idiopathic scoliosis (AIS) was one of the major concerns of spinal surgeons since the evolution of surgical correction techniques. In this respect, many tried to identify which criteria denote more rigid curve. In the present study, we aimed toward determining important factors influencing AIS curve flexibility on supine bending films. We assessed radiographs of 100 patients with AIS for direction of curves, number of involved vertebrae, apical vertebral translation and rotation, magnitude of main thoracic curve and T5-T12 kyphosis. Statistical analysis performed via stepwise linear regression model with these variables plus age and sex against flexibility index. According to regression analysis, there was a clear relationship between flexibility indexes (FI) and magnitude of main thoracic curve at all (P50) against rigid curves, apical vertebral rotation was a major determinant of curve flexibility also (P<0.001). Adolescent idiopathic scoliosis curves with larger Cobb�s angle and apical vertebral rotation show less flexibility on supine bending films. © 2015 Tehran University of Medical Sciences. All rights reserved

Scanned Imaging Techniques for Surface NDE

A phase sensitive laser probe in which the focussed spot is small, as compared with the acoustic wavelength, is capable of measuring the complex distributions of a SAW field along prescribed scan lines. Using the probe, it is possible, on a defect free sample, to measure the SAW velocity surface with an accuracy of a few parts in 105. Such accuracy suggests that the technique is sufficiently sensitive to detect small changes in surface characteristics; the presence of a defect is revealed by perturbations in the relationship between various scans. The scattered radiation patterns from a surface crack irradiated by acoustic surface waves can be utilised to determine the defect size and location with improved accuracy. Results on deliberate and real cracks are presented

Cell Cycle Response to Low Power Laser Irradiation in Jurkat E6.1 T-lymphocyte Cell Line

Low-power laser irradiation (LPLI) effects on cell cycle progression in Jurkat E6.1 T-lymphocyte leukemia (JETL) cells were examined in vitro at 635nm (visible) and 780nm (near infrared) wavelengths. The cells were exposed to an energy density of 9.174 J/cm2, and then examined 24, 48 and 72 hours post-irradiation. Cell cycle analysis by flow cytometry at 24 hours post-irradiation revealed that the three phases (G0/G1, S and G2/M) of cultured JETL cells showed different percentages in LPLI (635nm and 780nm) and unirradiated cultures, but S phase cells were observed with significant increased percentages (55.6 and 55.7%, respectively) compared to controls (37.3%). At 48 hours, again cells at S phase were observed with much higher percentages than control cells (48.2 and 51.5% vs. 29.9%, respectively), and the difference was significant (P ? 0.05). At 72 hours, the S phase cells were also observed with much higher percentages than control cells (33.1 and 32.6% vs. 21.3%, respectively), and the difference was also significant (P ? 0.05). Keywords: Cell cycle, Jurkat E6.1 T-lymphocyte leukemia cell line, Low-power laser irradiation

Correction to: Psychometric properties of the SF-6Dv2 in an Iranian breast cancer population (Breast Cancer, (2021), 28, 4, (937-943), 10.1007/s12282-021-01230-3)

The original version of this article unfortunately published with an incorrect funding number. The correct funding information should read as below. The Publisher regrets for the error. Funding This study was funded by Tehran University of Medical Sciences and Health Services (26473). © 2021, The Japanese Breast Cancer Society

Laser Detection and Imaging Techniques for Surface Examination

A coherent laser probe provides the basis for the recording of complex SAW distributions. Using three or more scans, the surface wave velocity can be deducep with an accuracy of a few parts in 105. Such measurements are sufficiently sensitive to detect small changes in surface characteristics; as an example, results will be presented on the effect of doping a Si surface. It is also possible to improve the accuracy of the basic elastic constants of the material by reference to the velocity characteristic. Of particular importance is the fact that this technique provides evidence on the effective value of these constants close to a surface; it is, therefore potentially useful for surface layer characterisation. Surface defects can be detected by means of scattered waves in both the forward as the reverse directions. In principle, either can be used to image the defect. Using both these components, the defect size and location can be determined with improved accuracy