one of the most important problems of fish is the short shelf lifebecause of the high unsaturated fatty acids. so, with the help of antioxidant compounds can be increased shelf life of fish. the aim of this study was to investigate the effect of vitamin e as a natural antioxidant to increase shelf life of rainbow trout fillet during storage at refrigerator temperature (4±1 0c). treatments were ...

objective: in this paper, finite element model of the l4 vertebra subjected to combination of compression and flexion loading in isotropic and anisotropic cases is investigated. methods: in both cases, the vertebra is considered homogeneous. also, the body of vertebra is divided to cancellous and cortical sections in anisotropic model, but the process is assumed isotropic such as isotropic mode...

The paper presentsan ultrasonic guided wave methodology for inspection of a fillet joint with a bend.Owing to the complex shape of the geometry, it is not amenable for conventional techniques. The methodology developed utilizes through-transmission ultrasonic testing. Two 90Δ angle beam (surface wave) ultrasonic transducers of central frequency 2.25 MHz, acting as a transmitter and a receiver a...

Transfer of a rifampicin-resistant mutant of Listeria monocytogenes from an inoculated slicing blade to slices of 'gravad' salmon (Salmo salar), and from inoculated salmon fillet to the slicing machine and subsequently to slices of uninoculated fillet was studied. The effect of slicing temperature (0 degrees C, 10 degrees C and room temperature), inoculum level (approx. 3, 5 and 8 log CFU/blade...

Fatigue analysis of aluminum-alloy welded joints based on the linear elastic notch-stress approach is presented in this paper. The International Institute Welding proposes two variants approach, one for thick joints, i.e., with a plate thickness 5 mm or more, reference radius rref = 1 mm, using FAT71 design curve, and thin less than 0.05 FAT180 curve. In work, feasibility proposed S–N curves, o...

Fatigue assessment is one of the significant factors to be considered for estimating design life structures and structural reliability during operation. Especially, welded structures, high stress concentration, residual stresses, weld geometry quality make structure more vulnerable fatigue failures. Therefore, approaches that are effective required performances structures. Existing classical me...

four rapeseed cultivars (hayola 401, hayola 308, rgs and option) were evaluated for some physiological traits under stress (50 % field capacity (fc) and non-stress (irrigated) conditions. the factorial set of treatments was arranged within a randomized complete block design with three replications. the collected data were analyzed using path and factor analyses. these is results showed that bas...

The finite element method is the most commonly used approach when solving complex practical cylinder-cylinder junctions in pressure vessels. This geometrical arrangement out with permitted scope of design-by-rule approaches or detailed stress information required as a fatigue assessment. High-stress concentrations occur on crotch corner for joints, and it possible to reach solutions this proble...