39 research outputs found

    OPTIMAL STRUCTURE TO GENERATE NUMBER OF LEVELS WITH REDUCED CIRCUITS

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    A CHB ripper tools includes several H-bridges with separate electricity sources for every H-bridge. This topology could be symmetric or uneven. Within this paper, a brand new structure for cascade multilevel converters is presented. The suggested structure is dependent on a cascaded connection of sub multilevel converters. The recommended structure is in comparison with conventional cascade along with other topologies. The performance and operation from the recommended sub multilevel and cascade structures is verified by experimental and simulation results. Validation from the analytical conclusions is completed using MATLAB/Simulink software. The suggested cascade structure can generate a lot of levels with reduced figures of insulated gate bipolar transistors, gate motorists, ant parallel diodes, electricity current sources, and blocked current by switches. For that suggested cascade ripper tools, a brand new formula to find out electricity source values is presented. Additionally, the perfect structures are presented for various goals

    Antidiabetic property optimization from green leafy vegetables using ultrasound-assisted extraction to improve cracker production

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    Here we test a method of incorporating of plant extracts into popular snack foods to help control diabetes. Since some fresh vegetables contain antidiabetic compounds, ultrasound-assisted extraction was used to optimize their extraction of from spring onions, bunching onions, and celery for later incorporation into crackers. We compared various concentrations of ethanol used during extraction, after which they were exposed to an ultrasound processor whose amplitude and sonication time were also varied. The optimal extraction conditions were found to be an ethanol concentration of 44.08%, an amplitude of 80%, and a sonication time of 30 min. This resulted in the highest level of -glucosidase inhibitory activity (i.e., 1,449.73 mmol ACE/g) and the highest extraction yield (i.e., 24.16%). The extract produced from these optimum conditions was then used as a constituent component of crackers at 0.625%, 1.25%, or 2.5% w/w. These biscuits were then produced at baking temperatures of 140°C, 150°C, or 160°C. We then measured the physical characteristics and bioactivities of sample biscuits from each treatment. We found that biscuits containing 2.5% vegetable combination extract and baked at 140°C had the highest total phenolic content, the strongest antioxidant performance, and showed the most substantial antidiabetic and antiobesity effects. Here we establish conditions for the effective extraction of antidiabetic functional ingredients via ultrasound from green leafy vegetables. We also provide a method of using these ingredients to prepare crackers with the aim of developing a functional antidiabetic snack food

    CHRONIC HYPOPITUITARISM AFTER TRAUMATIC BRAIN INJURY RISK ASSESSMENT AND RELATIONSHIP TO OUTCOME

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    OBJECTIVE Chronic pituitary dysfunction is increasingly recognized as a sequela of traumatic brain injury. We sought to define the incidence, risk factors, and neurobehavioral consequences of chronic hormonal deficiencies after complicated mild, moderate, or severe traumatic brain injury. METHODS Patients aged 14 to 80 years were prospectively enrolled at the time of injury and assessed at 3 and 6 to 9 months after injury for hormonal function and neurobehavioral consequences. Major and minor (subclinical) hormonal deficiencies, including growth hormone deficiency (GHD) and growth hormone insufficiency (GHI), were identified. Acute injury characteristics, neurobehavioral, and quality of life measures were compared in patients with and without major hormonal deficits by the use of multivariate analysis. RESULTS Out of 70 patients (mean age, 32 yr; median Glasgow Coma Scale score, 7; 19% women) tested at 6 to 9 months after injury, 15 (21%) had at least one major hormonal deficiency, 20 (29%) had minor deficiencies, and 30 (43%) had major and/or minor deficiencies. Patients with major deficiencies included 16% with GHD or GHI, 10.5% with hypogonadism, and 1.4% with diabetes insipidus. None of the patients required adrenal or thyroid replacement. At 6 to 9 months after injury, patients with major hormonal deficits had more abnormal acute computed tomographic findings (P = 0.014), greater acute and chronic body mass index (P < 0.01), and a worse Disability Rating Scale score (multivariate P = 0.04). Compared with the 59 growth hormone-sufficient patients, the 11 patients with GHD or GHI had worse Disability Rating Scale scores (multivariate P = 0.04), greater rates of depression, (90 versus 53%; multivariate P = 0.06), and worse quality of life in the Short Form-36 domains of energy and fatigue (multivariate P = 0.03), emotional well-being (multivariate P = 0.02), and general health (multivariate P = 0.07). CONCLUSION Chronic hypopituitarism warranting hormone replacement occurs in approximately 20% of patients after complicated mild, moderate, or severe traumatic brain injury and is associated with more severe brain injuries and increased disability. GHD and GHI are also associated with increased disability, poor quality of life, and a greater likelihood of depression. The clinical significance of minor hormonal deficits, which occur in almost 30% of patients, warrants further study. Given that major deficiencies are readily treatable, routine pituitary hormonal testing within 6 months of injury is indicated for this patient population

    Bioconservation of iron and enhancement of antioxidant and antibacterial properties of chicken gizzard protein hydrolysate fermented by Pediococcus acidilactici ATTC 8042

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    BACKGROUND The poultry industry is a fastest growing sector, and its processing industries generate considerable quantities of chicken gizzards (CG) every day. However, due to its hard texture, high microbial load, and cultural beliefs, it has low consumer preference. CGs are a substantial source of proteins, iron, and other nutrients, which can be effectively used to produce nutraceuticals, rich in peptides (antioxidants and antibacterial), bio‐iron, essential free amino acids, and fatty acids vital for human health. RESULTS Lactic acid fermentation of CG by Pediococcus acidilactici ATTC 8042 increased the antioxidant activity (DPPH, ABTS, and FRAP) up to 10 to 26 times compared to unfermented CG (p &lt; 0.05). The degree of hydrolysis and solvents (ethanol and water) used for extracting protein hydrolysates significantly affected the antioxidant properties. Moreover, fermented CG showed negligible reduction in bio‐iron (2‐3%) compared to heat processed (85 °C for 15 min) ones, in which bio‐iron was reduced up to 20.3% (p &lt; 0.05). Further, the presence of unsaturated fatty acids such as C20:4 and C22:4 n‐6 indicated low level of lipid oxidation. CONCLUSION Fermented CG, with its reasonably high antioxidant and antibacterial activity, together with a substantial amount of bio‐iron and other nutritional components can serve as a functional food or feed additive to reduce oxidative stress and treat iron deficiency

    Influence of solvent-free extraction of fish oil from catfish (Clarias magur) heads using a Taguchi orthogonal array design: A qualitative and quantitative approach

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    This study aimed to efficiently utilize catfish heads, enhancing the oil extraction process while improving the cost-effectiveness of fish byproduct management. The study employed the wet rendering method, a solvent-free approach, utilizing a two-factor Taguchi orthogonal array design to identify critical parameters for optimizing oil yield and ensuring high-quality oil attributes. The extraction temperature (80–120°C) and time (5–25 min) were chosen as variables in the wet rendering process. Range analysis identified the extraction time as a more significant (p < 0.05) factor for most parameters, including oil yield, oil recovery, acid value, free fatty acids, peroxide value, and thiobarbituric acid reactive substances. The extraction temperature was more significant (p < 0.05) for oil color. Consequently, the wet rendering method was optimized, resulting in an extraction temperature of 80°C and an extraction time of 25 min, yielding the highest oil yield. This optimized wet rendering process recovered 6.37 g/100 g of oil with an impressive 54.16% oil recovery rate, demonstrating comparable performance to traditional solvent extraction methods. Moreover, Fourier transfer infrared spectra analysis revealed distinct peaks associated with triacylglycerols and polyunsaturated fatty acids (PUFA). The oil recovered under optimized conditions contained higher levels of PUFA, including oleic acid (189.92 μg/g of oil), linoleic acid (169.92 μg/g of oil), eicosapentaenoic acid (17.41 μg/g of oil), and docosahexaenoic acid (20.82 μg/g of oil). Volatile compound analysis revealed lower levels of secondary oxidation compounds under optimized conditions. This optimized wet rendering method offers practical advantages in terms of cost-efficiency, sustainability, reduced environmental impact, and enhanced oil quality, making it an attractive option for the fish processing industries. Future research possibilities may include the purification of the catfish head oil and its application in the food and pharmaceutical industries
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