One of the main challenges in computational simulations of gas detonation propagation is that negative density or negative pressure may emerge during the time evolution, which will cause blow-ups. Therefore, schemes with provable positivity-preserving of certain quantities such as density and pressure are desired. First order and second order positivity-preserving schemes were well studied, e.g...

Minimum distance (MD), maximum likelihood (ML), and maximum a posteriori (MAP) decoding is considered for synchronization error correcting (SEC) codes with known codeword boundaries when transmitted over the Binary Substitution, Insertion and Deletion channel. It is shown that MD decoding is sub-optimal, unlike ML or MAP decoding. Based on ML and MAP decoding, a new measure called the Change Pr...

Tropical montane taxa are often locally adapted to very specific climatic conditions, contributing to their lower dispersal potential across complex landscapes. Climate and landscape features in montane regions affect population genetic structure in predictable ways, yet few empirical studies quantify the effects of both factors in shaping genetic structure of montane-adapted taxa. Here, we con...

microbial activity and spoilage of chicken meat from the market in mashhad, iran, stored in air at 0, 4, 10 and 15°c was assessed. microbial spoilage population, total volatilebase nitrogen (tvb-n), ph and organoleptic changes were determined. based on the results of sensory analysis, shelf-life of chicken meat stored at 0, 4, 10 and 15°c was 72, 120, 220 and 320 h, respectively. tvb-n that ser...

Abstract In this study, liquid smoke production waste gas (LSPW) was used as a substitute for carbon monoxide (CO) and filter in handling frozen tuna steaks. Tuna steaks were packed plastic bags, then inside the bag, steak sprayed with CO LSPW, stored at 4°C two days. After that, each package vacuumed -25°C four weeks. Observation of quality deterioration started from beginning storage until fo...

The aim of the present study was to evaluate effect crust-freezing (CF) on fresh salmon fillets in skin-packaging during storage at −2.0°C. After CF, all treated samples and untreated controls were stored a refrigerated cabinet for 20 d. Sampling carried out days 0, 2, 6, 8, 10, 14 order analyse total volatile basic nitrogen (TVB-N) levels mesophilic psychrophilic viable counts (MVC PVC). Enter...

the effects of grape pomace extract (0, 2 and 4%) on quality and shelf life of silver carp ( hypophthalmicthys molitrix ) fillets during chill storage (4°c) were investigated. the control and the treated fillets were analyzed periodically for microbiological (tvc and ptc), chemical (tvb-n), and sensory characteristics. the results showed that grape pomace-treated samples have lower tvb-n (24.2 ...

Summary This study was conducted to evaluate the effect of chitosan coating enriched with garlic extract (GE) and coriander essential oil (CEO) on shelf life rainbow trout fillet. Treatments were prepared (2%) containing GE CEO (0.1% 0.5%) both separately in combination. The results showed that had significant effects peroxide value (PV), thiobarbituric acid (TBA), total volatile basic nitrogen...

This study is focused on the effect of phycobiliprotein extraction Gracilaria quality common carp burgers, and application nanoliposomes containing pigment in improvement its antimicrobial antioxidant activity burgers during refrigerated storage 18 days. Burgers were incorporated with liposomal (2.5% 5% w/w), their chemical microbial changes terms pH, peroxide value (PV), thiobarbituric acid (T...