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Effect of Lactoperoxidase activation on the keeping quality of raw milk kept at refrigeration temperature
No full textABSTRACT Effect of different levels of sodium thiocynate and sodium percarbonate for activation of lactoperoxidase system on keeping quality of raw cow ' s milk at refrigeration temperature was studied. The milk was collected directly from the dairy farm, Faculty of Animal Production Science and Technology, the study was conducted during February-march 2012. Three levels of sodium thiocynate and sodium percarbonate (12, 16, 20 and 20, 30 40 mg/L) were used respectively. The samples were activated at about 30 min. after morning milking then stored at 4°C for 7 days. Titratable acidity % (TA), milk composition and total bacterial counts were evaluated. The results indicated that the keeping quality of activated milk samples were improved compared with that of control. The results showed that significant variations were observed between the activated and control samples. Whereas, the control milk samples were clearly deteriorated in quality at about 5th day of storage,. Also the results revealed that no significant differences in milk composition (fat, protein, density and total solid) was observed among control and activated milk samples. Key words: Milk, Preservation, Sodium Thiocynate, Percarbonate, microbiological , Storage {Citation: Zawahir Aboelbashar Musa and Omer Ibrahim Ahmed Hamid. Effect of Lactoperoxidase activation on the keeping quality of raw milk kept at refrigeration temperature
15+ MILLION TOP 1% MOST CITED SCIENTIST 12.2% AUTHORS AND EDITORS FROM TOP 500 UNIVERSITIES 4 Genetic Engineering of Phenylpropanoid Pathway in Leucaena leucocephala
No full textMajority time: operations in the midst of Jakarta Toppan Best-set Premedia Limited Journal Code: SORE Proofreader: Elsie
No full textAbstract: Across many cities of the so-called Global South, the primary responsibility for constructing spaces of inhabitation has fallen largely to residents themselves. Although these cities have been largely remade through the intensive segregations precipitated by property markets, many substantial traces of the continuous incremental renovations and readjustment of everyday life remain vital. It was not just a matter of households building their own homes. Affordability meant density. Densification was not just of bodies of techniques necessary to provide an array of affordances. This meant the intermixing of measures, angles, calculations, impulses, screens, surfaces, soundscapes, exposures, folds, circuitries, and layers, as instruments for associating things, bringing things into association, where things get their 'bearings' by having a 'bearing' on each other. But these associations required their own rhythm and time. Focusing on different heterogeneous districts in inner city Jakarta, the paper explores these mixtures of temporality and how they are materialized in local built and economic environments. Keywords: Jakarta, local economy, incremental temporality, urban development, built environment, social infrastructure The time that works In the fields of urban development and change many assumptions are made about the capacities of residents to bring about improvements in the conditions of their lives. This is particularly the case for residents living in rapidly expanding urban mega-regions where complex rearrangements of life outpace the ability of policy-makers and institutions to always manage these transformations. The bulk of these assumptions centres on various organizational imaginaries -that is, the capacities of residents to organize in ways that identify and secure their collective interests and rights. If only residents were better able to pool their time, efforts and assets into more proficient investments and organizational capacities, then, the assumption goes, would they be better able to make the city something that works for the
Effect of Short-Term Phytoestrogen Treatment in Male Rats on Nitric Oxide-Mediated Responses of Carotid and Cerebral Arteries: Comparison with 17-Estradiol
No full textABSTRACT The use of estrogen for protection against vascular dysfunction is limited due to its effects on the reproductive system, particularly in males. We postulated that daidzein, an isoflavone with estrogen-like effects on the systemic vasculature but not the reproductive system, might enhance nitric oxide (NO)-mediated cerebral vasodilatation. Male rats were administered vehicle, 17-estradiol (0.1 mg/kg s.c.), or daidzein (0.2 mg/kg s.c.) daily for 7 days. Basal and acetylcholine-stimulated NO release was assessed in vitro via carotid arterial rings or in vivo by measuring changes in basilar artery diameter. Levels of protein expression of endothelial NO synthase (eNOS), caveolin-1, and calmodulin were assessed in carotid arteries using Western analysis. Plasma NO levels were doubled by daidzein or 17-estradiol. NO production and endothelium-dependent contraction in response to the NOS inhibitor N G -nitro-L-arginine (L-NNA; 100 M) was enhanced by 50 to 100% in carotid arteries from rats treated with daidzein or 17-estradiol. Acetylcholineinduced relaxation was selectively enhanced in carotid arteries from rats treated with daidzein. Similarly, constrictor responses of the basilar artery to L-NNA in vivo were selectively augmented by ϳ100% by 17-estradiol treatment and tended to be ϳ50% greater in daidzein-treated rats. Expression of caveolin-1 was decreased, and calmodulin was increased, in vessels from daidzein-or 17-estradiol-treated rats. eNOS expression was unaffected by the treatments. These data suggest that short-term administration of daidzein or 17-estradiol modulates cerebral artery reactivity in males by enhancing synthesis and release of endothelium-derived NO. Isoflavone therapy may therefore be a feasible approach to protect against cerebrovascular disease and stroke
PERIODONTAL TREATMENT NEEDS AMONG A GROUP OF AFGHAN NATIONALS: A PILOT STUDY
No full textABSTRACT Objectives: The aim of this study was to assess the periodontal treatment needs in relation to age, gender and level of education among a group of Afghan nationals
Bezier Curves : Simple Smoothers of Noisy Data
No full textAbstract In many instances only the approximation curve to experimental or field data is of interest . Application of Bernstein-Bézier polynomials for smoothing of noisy data is shown . Bezier curves provide a simple yet efficient way to approximate (or smooth) arbitrarily spaced vector valued functions without explicit model specification . To evaluate the efficiency of Bézier curves some simulated cases are presented
Synchronization phenomena in van der Pol oscillators coupled by a time-varying resistor
No full textAbstract-In this study, synchronization phenomena observed in van der Pol oscillators coupled by a fifth-power nonlinear resistor are investigated. By carrying out computer simulations, interesting synchronization phenomena can be confirmed to be generated in this system. Namely, the synchronization states change according to the coupling strength and nonlinearity of the coupling resistor
Electric drill-string telemetry
No full textAbstract We design a numerical algorithm for simulation of low-frequency electric-signal transmission through a drill string. This is represented by a transmission line with varying geometrical and electromagnetic properties versus depth, depending on the characteristics of the drill-string/formation system. These properties are implicitly modeled by the series impedance and the shunt admittance of the transmission line. The differential equations are parabolic, since at low frequencies the wave field is diffusive. We use an explicit scheme for the solution of parabolic problems, based on a Chebyshev expansion of the evolution operator and the Fourier pseudospectral method to compute the spatial derivatives. The results are verified by comparison to analytical solutions obtained for the initial-value problem with a voltage source
Modelling System Administration Problems with CSPs
No full textAbstract System administrators increasingly use declarative, objectoriented languages to configure their systems. Introducing constraints to such a language and automatically generating a valid system configuration is an area of active research. We describe our work towards creating ConfSolve, an object-oriented configuration language which can describe constraints over valid configurations, solution of which is provided by compilation into a CSP. We evaluate our solution against a simple virtual machine allocation problem, with promising results for automating Infrastructure as a Service (IaaS) systems
Online) An Open Access
No full textABSTRACT Rectal prolapse is not uncommon in young children, and is usually a self limited condition. Recurrent rectal prolapse not responding to conservative management requires surgical intervention. Using posterior sagittal approach, levator repair and rectal suspension was done in 35 patients over a period of 8 years at our Paediatric Surgical Department. Median age of the patients was 4.5 years. Post operatively 5 patients had mild mucosal prolapse and 3 had wound infection. None of the patient had recurrence