4,370 research outputs found

    Determination of the Optimal Sterilization Regime of Canned Quail Meat with Hydrocoloids Application

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    The use of hydrocolloids in the modern meat industry is the one of prospective directions for improving functional and technological characteristics of meat and meat products, including poultry at long storage terms. A series of concrete requirements to functional-technological, physical-chemical and organoleptic parameters is offered for canned poultry in correspondence with minimal specifications for the quality of products of an animal origin.There is presented the study of the optimization of the process of meat products sterilization using meat of chicken-broilers, quails and hydrocolloids depending on physical-chemical and organoleptic properties. The parameters of quail meat use in recipes of canned poultry meat with hydrocolloids were considered. The influence of the sterilization process on characteristics of chicken-broiler and quail meat was established.There was revealed the essential difference in the influence on functional and technological parameters of canned quail meat using hydrocolloid mixtures comparing with canned chicken-broiler meat, manifested in changes of MKC (moisture keeping capacity), plasticity and salt content in jelly. At changing sterilization regimes, there takes place the change of physical and chemical characteristics of gels that correlates with organoleptic characteristics. For providing high quality parameters of canned poultry meat and industrial sterility, sterilization regimes for canned chicken-broiler meat must be realized for containers with the volume 500 with sterilization time no more than 90 minutes. For canned quail meat the sterilization process duration must be increased to 120 min at the temperature 115 ° С

    Composite vertices that lead to soft form factors

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    The momentum-space cut-off parameter Λ\Lambda of hadronic vertex functions is studied in this paper. We use a composite model where we can measure the contributions of intermediate particle propagations to Λ\Lambda. We show that in many cases a composite vertex function has a much smaller cut-off than its constituent vertices, particularly when light constituents such as pions are present in the intermediate state. This suggests that composite meson-baryon-baryon vertex functions are rather soft, i.e., they have \Lambda considerably less than 1 GeV. We discuss the origin of this softening of form factors as well as the implications of our findings on the modeling of nuclear reactions.Comment: REVTex, 19 pages, 5 figs(to be provided on request

    Efek Ekstrak Limbah Cair Empulur Batang Sagu Baruk (Arenga Microcarpha) Terhadap Fotoreduksi Besi(III)

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    Telah dilakukan penelitian untuk menganalisis kandungan fenolik, flavonoid, dan tanin dari limbah cair empulur batang sagu baruk dan menguji kemampuanya dalam fotoreduksi Fe3+. Empulur batang sagu baruk diekstrak dengan pelarut akuades secara maserasi selama 2 jam. Selanjutnya ekstrak hasil maserasi dianalisis kandungan fitokimia fenolik, flavonoid dan tanin dengan menggunakan spektrofotometer UV-Vis. Pengujian fotoreduksi dilakukan pada cahaya fluorescent dengan konsentrasi 1000 mg/L selama 5 jam dengan variasi pH 4, 5, 6, 7 dan 8 serta kapasitas daya 42, 62 dan 104 Watt. Analisis ekstrak limbah cair empulur batang sagu baruk menunjukkan konsentrasi fenolik 112,04 mg asam galat/L konsentrasi flavonoid 30,10 mg kuersetin/L dan konsentrasi tanin 22,02 mg katekin/L.Hasil penelitian menunjukkan bahwa ekstrak limbah cair empulur batang sagu baruk pada pH 6 dengan kapasitas daya 104 Watt mempunyai kemampuan yang paling baik untuk mereduksi Fe3+ dibandingkan dengan ekstrak lainya.Research had been carried out to analyze the photochemicals phenolic, flavonoids, and tanins in liquid waste of pith trunk sago baruk and to test its ability in photoreduction. Pith trunk extracted with aquadest in maceration for two hours. The extracts resulted were then analyzed for phenolic, flavonoids and tanins phytochemicals using spectrophotometer UV-Vis. The photoreduction tests performed on fluorescent light with concentration of 1000 mg/L for five hours with variation pH 4, 5, 6, 7 and 8 and on energy capacities of 42, 62 dan 104 Watt. Analysis of liquid waste of pith trunk sago baruk extract showed that phenolic concentration was 112,04 mg gallic acid/L, flavonoid concentration was 30,10 mg quersetin/L and tannin concentration was 22,02 mg chatechin/L. The results showed that extract liquid waste pith trunk sago baruk at pH 6 with energy capacities 104 Watt had best ability in photoreduction Fe3+

    An Evidence-based Review: Efficacy of Safety Helmets in the Reduction of Head Injuries in Recreational Skiers and Snowboarders

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    BACKGROUND: Approximately 600,000 ski- and snowboarding-related injuries occur in North America each year, with head injuries accounting for up to 20% of all injuries. Currently, there are no major institutional recommendations regarding helmet use for skiers and snowboaders in the United States, in part owing to previous conflicting evidence regarding their efficacy. The objective of this review was to evaluate existing evidence on the efficacy of safety helmets during skiing and snowboarding, particularly in regard to head injuries, neck and cervical spine injuries, and risk compensation behaviors. These data will then be used for potential recommendations regarding helmet use during alpine winter sports. METHODS: The PubMed, Cochrane Library, and EMBASE databases were searched using the search string helmet OR head protective devices AND (skiing OR snowboarding OR skier OR snowboarder) for articles on human participants of all ages published between January 1980 and April 2011. The search yielded 83, 0, and 96 results in PubMed, Cochrane Library, and EMBASE, respectively. Studies published in English describing the analysis of original data on helmet use in relation to outcomes of interest, including death, head injury, severity of head injury, neck or cervical spine injury, and risk compensation behavior, were selected. Sixteen published studies met a priori inclusion criteria and were reviewed in detail by authors. RESULTS: Level I recommendation is that all recreational skiers and snowboarders should wear safety helmets to reduce the incidence and severity of head injury during these sports. Level II recommendation/observation is that helmets do not seem to increase risk compensation behavior, neck injuries, or cervical spine injuries among skiers and snowboarders. Policies and interventions to increase helmet use should be promoted to reduce mortality and head injury among skiers and snowboarders. CONCLUSION: Safety helmets clearly decrease the risk and severity of head injuries in skiing and snowboarding and do not seem to increase the risk of neck injury, cervical spine injury, or risk compensation behavior. Helmets are strongly recommended during recreational skiing and snowboarding

    Gender effect, quality of life and genetic biomarkers in a Portuguese sample with ARHL with or without tinnitus

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    Trabalho apresentado em Symposium & 56th Inner Ear Biology Workshop, 7-10 setembro de 2019, Pádua, ItáliaN/

    Measurement of p + d -> 3He + eta in S(11) Resonance

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    We have measured the reaction p + d -> 3He + eta at a proton beam energy of 980 MeV, which is 88.5 MeV above threshold using the new ``germanium wall'' detector system. A missing--mass resolution of the detector system of 2.6% was achieved. The angular distribution of the meson is forward peaked. We found a total cross section of (573 +- 83(stat.) +- 69(syst.))nb. The excitation function for the present reaction is described by a Breit Wigner form with parameters from photoproduction.Comment: 8 pages, 2 figures, corrected typos in heade

    Possible use of a Cooper-pair box for low-dose electron microscopy

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    A transmission electron microscope that takes advantage of superconducting quantum circuitry is proposed. The microscope is designed to improve image contrast of radiation-sensitive weak phase objects, in particular biological specimens. The objective in this setting is to measure the phase shift of the probe electron wave to a precision Δθ\Delta\theta within the number of electrons NN that does not destroy the specimen. In conventional electron microscopy Δθ\Delta\theta scales as 1/N1/2\sim 1/N^{1/2}, which falls short of the Heisenberg limit 1/N\sim 1/N. To approach the latter by using quantum entanglement, we propose a design that involves a Cooper pair box placed on the surface of an electrostatic electron mirror in the microscope. Significant improvement could be attained if inelastic scattering processes are sufficiently delocalized.Comment: 41 pages, 4 figures; extensively revised, following referee comments; final version, the main point remains the same as v.
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