207 research outputs found

    Canning of non exportable shrimps

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    The shrimp can with three compounds of salted water, oil, and sauce, in view of the organoleptic characteristics were compared to each other. Also the effects of processing methods including freezing, drying and canning were evaluated according to some qualitative parameters to raw shrimp (blank). The result showed that considering the organoleptic characteristics, the shrimp can with the compound of oil was better than the two others. On the other hand, the pH of the shrimp can, containing oil was 7.44 ± 0.01, freeze shrimp 7 ± 83-0.04 and dried shrimp 7.46 ± 0.01, that according to the T test, comparing to the blank these differences were statistically meaningful (P <U/01). The amount of protein in freeze shrimp was 96.2 ± 0.03, in dried shrimp 81 ± 0.7 and in canned shrimp (containing oil) was 76.8 ± 0.92, these differences were also statistically considerable. The quantity of the T.V.N in freeze shrimp was 0 ± 0.53, dried shrimp 66 ± 0.3 and in canned shrimp (containing oil) was significant. In view of the total number of the microorganisms, in freeze shrimp was 4800 per gram, in the dried shrimp 15500 per gram, and in the canned shrimp was negative

    Changes in Activity and Kinetic Properties of the Proteasome in Different Rat Organs during Development and Maturation

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    The proteasome is considered the most important proteolytic system for removal of damaged proteins with aging. Using fluorogenic peptide substrates, the chymotrypsin-like, the trypsin-like, and the peptidylglutamyl peptidase activities of the proteasome were measured in the soluble fractions of liver, brain, and lens rat homogenates. Specific activity was significantly decreased in liver and brain homogenates with maturation of the animal, that is, from newborn (7 days old) to fertile rats (2–4 months old). Rat lens homogenate exhibited an increase in activity with maturation and also with aging. Chymotrypsin-like activity was stimulated by calcium and this proteolytic activity was significantly decreased with maturation of the rat brain. The Michaelis-Menten constant (Km) increased with age in rat liver and lens, indicating a loss of affinity for its substrates by the proteasome in the animal with maturation and aging. The present data suggest that the loss of function of the proteasome with maturation may be due to structural changes of the proteasome or a decreased content of regulatory components

    The prevalence of metabolic syndrome in the north of Iran. An epidemiologic comparative study

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    Background and Objective: The metabolic syndrome (MetS) increases the risk of cardiovascular diseases and the main aim of this study is to explorer prevalence of it in the north of Iran with comparison of Turkman and non-Turkman ethnic groups in 2012. Material and Methods: This is a cross-sectional study that conducted on the 248 subjects aged 25-70 years (Turkman=88 and non-Turkman=160). Individuals were chosen randomly from 25 clusters. Waist circumference was measured with the subject standing at the end of normal breathing; blood pressure was measured in three times and 5 ml of venous blood drawn after 8-12 h fast in the morning for laboratory test. Biochemical analysis including fasting blood glucose, triglyceride and high-density lipoprotein (HDL) cholesterol was assayed using a commercially kit (Pars Azmoon, Karaj, Iran). ATP-III method and SPSS 16.0 software (Chicago II, USA) were used for diagnosis of MetS and for statistical analyzes, respectively. P-value < 0.05 considered statistically significant. Results: Compare to Turkman group, the mean of FBG (fasting blood glucose), triglyceride and waist circumference are 15.9 mg/dl, 30.2 mg/dl and 6.5 cm were more in non-Turkman group, respectively (P<0.05 for all). The Pearson's correlation coefficient is positive between age and MetS (r=0.287, P=0.01). Generally, MetS was common in 37.9 of subjects and it was 14.7 in non-Turkman more than in Turkman people (P=0.015). Prevalence rate of MetS in men and women was 29.7 and 43.5, respectively (P=0.001). Conclusion: In the north of Iran, the prevalence of MetS is high and it was in non-Turkman ethnic group more than in Turkman group and in women more than in men while gender differences only was shown in non-Turkman ethnic group

    Determinant criteria for designing Health benefit package in selected countries

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    Health benefit package described as primary health interventions that provided with government using general funds for all regardless their financial ability. This study was aimed at determine appropriate pattern for Iran using comparative survey of Health benefit package in various countries. A review exploration was done, scholars was selected population of both developed and developing countries, required information was also extracted by articles, searches and reports of reliable sources and date were analyzed by SPSS, in brief. The vast majority frequencies was respectively allocated to accessibility (40.7%), cost- effectiveness (29.6%), prioritize, efficacy and cost (22.2%). most countries located in WHO African region were selected cost-effectiveness and accessibility, WHO southeast Asia region were selected, coverage, prioritize, efficacy and quality and finally most WHO Europeans region were elected effectiveness and services costs for including services in Health benefit package. According to most Health benefit package designer emphasis on criteria including accessibility and costeffectiveness, to design Health benefit package for Iran, these criteria must be noticed

    Effect of length of productive life on genetic trend of milk production and profitability: A simulation study

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    Longevity is an important economic trait in dairy cattle. Including this trait in a breeding scheme, increases profit. The aim of this study was to evaluate the relationship between length of productive life (LPL), genetic trend of milk production and profitability of herds. LPL has been defined as time from first calving to culling.A Dynamic stochastic model was used to simulate dairy herd system. This model consisted of biological characteristics such as reproduction, genetic and economic components. Both discrete (time-oriented) events such as freshening and breeding as well as continuous processes such as milk production and feed consumption were simulated individually for each animal. The basiccharacteristics of the animal component included pedigree, genetics, age at calving, number of service per conception, number of lactations and LPL. Other characteristics included time-oriented characteristics such as weight, age, physiological status, lactation stage, open days, pregnancy days,estrus cycle, service date and feed requirements. The herd was described as several animal groups: young stock (&lt;1 year old), heifers (&gt;1 year old) and several groups of lactating and dry cows. Increasing mean LPL of herd from 35 to 65 months over 20 years resulted in decreased herd genetic merit of milk from 2025 to 1751 kg and mean of herd genetic trend per year was decreased from 101.24 to 87.56 kg, because of increased generation interval. Increasing LPL resulted in increased profit. Increasing LPL was associated with decreased costs for raising replacement heifers and sale of surplus heifers increased. The ratio of cumulative discounted profit (CDP) for herds with 40, 45, 50, 55, 60 and 65 months of LPL to the lowest level of LPL (35 month), were 1.22, 1.43, 1.55, 1.68, 1.79 and 1.90respectively across time

    Multi-Way and Poly-Phase Wideband Differential Phase Shifter Based on Metamaterial Technology

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    This paper presents multi-way and poly-phase differential phase shifter (DPS) based on metamaterial technology to realize delay lines of equal length. The proposed phase shifter provides the required phase shift relative to the reference line over a wide bandwidth. Several DPS phase shifter designs were fabricated and tested to verify their performance. Measured results show that the proposed phase shifter has phase deviation of less than ±4° and return-loss better than 10-dB with an insertion-loss of less than 1 dB across 2.2 to 4.4 GHz

    Multiband antenna for portable device applications

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    This article describes a compact planar microstrip antenna for multiband transceiver application. The proposed antenna consists of a combination of E-shaped and C-shaped radiators that are excited via a common microstrip feed-line. Embedded in the ground-plane are included an open- and short-ended slots whose purpose is to enhance the antenna's impedance match and increase the number of bands in which the antenna can operate. A prototype antenna was fabricated on a standard FR4 substrate with εr of 4.4 and thickness of 1.6 mm, and its reflection-coefficient and radiation patterns were measured to demonstrate its feasibility. Measurements confirm the antenna can simultaneously operate over the frequency bands of: DCS (1.71–1.85 GHz), PCS (1.85–1.99 GHz), UMTS (1.92–2.17 GHz), Wibro (2.3–2.39 GHz), WLAN+ Bluetooth (2.4–2.48 MHz), WIMAX (2.5–2.69 GHz), WIMAX (3.3–3.5 GHz), HIPERLAN2 (5.15–5.35/5.47–5.725 GHz), and WLAN (5.15–5.35/5.725–5.825 GHz). The antenna has dimensions of 30 × 40 × 1.6 mm3, which is compatible with the requirements imposed by portable wireless systems

    Miniature in-phase Wilkinson power divider with pair of parallel transmission-lines for application in wireless microwave systems

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    A novel miniature Wilkinson power divider (WPD) design is presented. This is achieved by substituting the quarter-wavelength transmission-lines constituting the WPD with an equivalent pair of parallel transmission-lines (PPTLs) that effectively reduce the circuit size of the WPD by 43% compared with a conventional design whose ground-plane is defected. Particle swarm optimization (PSO) technique is used to achieve size reduction. Meandering the transmission-lines further reduce the WPD size by 22%. The proposed WPD has overall dimensions of 9.38 × 11.51 mm2 or 0.11 λg × 0.14 λg, which is compatible with the requirements imposed by portable personal wireless systems. Coupling between the parallel transmission-lines is shown to extend the operational bandwidth of the power divider to 3.2 GHz (0.8–4 GHz) for a return-loss better than 10 dB

    Compact tri-band Wilkinson power divider based on metamaterial structure for Bluetooth, WiMAX, and WLAN applications

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    A novel Wilkinson power divider is presented in this paper for triple band operation. It comprises a П-shaped transmission-line coupled to a rectangular split ring resonator metamaterial structure. The μ-negative feature of the rectangular split ring resonator metamaterial structure is investigated by retrieving its constitutive parameters from the S-parameter response. To demonstrate the versatility of the proposed Wilkinson power divider it was designed to cover Bluetooth (2.4 GHz), WiMAX (3.5 GHz), and WLAN (5.2 GHz). The tri-band Wilkinson power divider was fabricated and its performance measured to verify the design. Good agreement between the measured and simulated data is obtained. Measured results show that the tri-band Wilkinson power divider has fractional bandwidth of 3.86%, 5.82%, and 3.89% at 2.4, 3.5, and 5.2 GHz, respectively. In addition, the rectangular split ring resonator metamaterial Wilkinson power divider has a small physical footprint (14 mm ×17.9 mm or 0.15λg×0.19λg), which is 60% smaller than conventional designs

    Assessing quality of healthcare service by the SERVQUAL model: A case study of a field hospital

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    Aims: Identifying quality gap of services provided by hospital lead to preparing improvement projects and programs. This study intends to determine the quality gap in healthcare services provided by Shahid Elmi Field Hospital from the view point of Patients. Methods: In this cross-sectional study, 100 patients admitted to the hospital in 2011 were selected randomly for the study. The data gathered through SERVQUAL Standard Questioner. The content validity and reliability was confirmed by specialist opinions and Cronbach's alpha coefficient, respectively. Data analysis was conducted using descriptive statistics and two-sample t, Pearson correlation and ANOVA tests, using SPSS version 18. Results: According to the patients' views, there is a positive quality gap in delivered services. The highest mean score of the negative and positive quality gap were related to Responsiveness (-0.02) and access (0.035) respectively. There was a significant relation between the frequency of referral and the quality empathy (p=0.05). Conclusion: According to the results, the delivered services of the studied Field hospital is higher than the expectations of patients. It is recommended that processes related to delivery of services, in all dimensions of services' quality particularly responsiveness and assurance, should be identified and reengineered
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