382 research outputs found

    Uranium and Plutonium Recovery by Tributylphosphate Solvation and Trioctylamine Ion association Mechanisms

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    In this work a flowsheet has been put for the recovery of uranium and plutonium from 2.5M nitric acid solutions using 17.5% tributyl phosphate (TBP) and 2.5% trioctylamine (TOA) in kerosene diluent . The fission products (resulting from irradiated of uranium samples in nuclear research reactor) were removed from the desired actinides U & Pu .The organic phase TBP/TOA/Kerosene, containing both actinides U&Pu were stripped using 0.1 M HNO3. Trioctylamine (2.5 volume ratio ) in mesitylene , has been used in conditions appropriate for the recovery of Pu . From the experiments done using mixer- settler , the concentration of uranium in the organic phase in such conditions was very low ,not exceeding parts of a million

    Joining up health and bioinformatics: e-science meets e-health

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    CLEF (Co-operative Clinical e-Science Framework) is an MRC sponsored project in the e-Science programme that aims to establish methodologies and a technical infrastructure forthe next generation of integrated clinical and bioscience research. It is developing methodsfor managing and using pseudonymised repositories of the long-term patient histories whichcan be linked to genetic, genomic information or used to support patient care. CLEF concentrateson removing key barriers to managing such repositories ? ethical issues, informationcapture, integration of disparate sources into coherent ?chronicles? of events, userorientedmechanisms for querying and displaying the information, and compiling the requiredknowledge resources. This paper describes the overall information flow and technicalapproach designed to meet these aims within a Grid framework

    Estimating the chemical composition of secondary compounds of Iraqi wild Agaricus bellaniae characterized morphologically and genetically

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    هدفت هذه الدراسة التي تعد الأولى من نوعها في العالم والوطن العربي التي أجريت في مختبر أنتاج الفطر التابع لوحدة بحوث النباتات الطبية/ كليةعلوم الهندسة الزراعية– جامعة بغداد للفترة من 21 تموز 2016 ولغاية  30 كانون الأول 2018 إلى عزل وتنقية الغزل الفطري للعزلة البرية ، ثم إجراء التشخيص المظهري والجيني لها ،إذ اظهر ان العزلة البرية تعود للفطر Agaricus bellaniae بعدها تم ترميز العزلة النقية  التي تم الحصول عليها في منظمة NCBI الأمريكية بالرمز MF987843.1وبذا يكون العراق ثاني دولة في العالم ينمو فيها الفطر بعد الولايات المتحدة الامريكية ،كما تم تحديد درجات الحرارة المثلى لسرعة نمو الغزل الفطري مختبريا ،إذ تراوحت مابين50 -60◦م ،كما تم اجراء التشخيص النوعي والكمي لمحتوى الاجسام الثمرية المجففة للفطرالبري لمعرفة محتواه من المركبات الفعالة طبيا ،إذ اظهرت ارتفاع نسبة كل من  Linoleic acid47.77 % و مضادات الاكسدةالكليةوالفينولاتالكلية والفلافونويدات الكلية ، فضلا عن محتوى الاجسام الثمرية من المركبات الكيمائية الاساسية وخصوصا ارتفاع نسبة البروتين 44% والعناصر المعدنية خصوصا عنصر السلينيوم0.3691ppm والاحماض الامينية والتي سجل كل من حامضي الكلوتاميكوالاسبارتيك نسبة مرتفعة بلغت 4.02 % و2.26 % على التوالي.   This study, which is considered the first of its kind in the world and the Arab homeland, was carried out in the laboratory of mushroom production belonging to the Medicinal Plant Unit/ College Of Agricultural Engineering Sciences/ University of  Baghdad during the period from July 21, 2016, to December 30, 2018, aiming to isolate and purify the mycelium of the wild isolation in addition to the genetic and morphological identification of the mushroom Agaricus bellaniae. The obtained pure isolation was tagged in the American National Center for Biotechnology Information (NCBI) with symbol MF987843.1, thus Iraq would be the second country in the world in which the mushroom is grown following the United States of America. The optimum temperature for the mycelium growth rate was also determined in the laboratory, as they ranged between 50 -60 ◦C. Furthermore, the dried fruit bodies were recognized qualitatively and quantitatively to identify their content of medicinally active compounds. Theyhave shown a high percentage of  Linoleic acid (47.77%), total anti-oxidants, and total phenols in addition to the high content of essential chemicals including high protein percentage (44%), mineral elements- selenium in particular (0.369 ppm), and amino acid where glutamic and aspartic acids recorded the highest percentage, reached 4.02% and 2.226% respectively

    Particle-laden weakly swirling free jets: Measurements and predictions

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    A theoretical and experimental investigation of particle-laden, weakly swirling, turbulent free jets was conducted. Glass particles, having a Sauter mean diameter of 39 microns with a standard deviation of 15 microns, were used. A single loading ratio of 0.2 was used in the experiments. Measurements are reported for three swirl numbers, ranging from 0.0 to 0.3. The measurements included mean and fluctuating velocities of both phases, and particle mass flux distributions. Measurements were compared with predictions from three types of multiphase flow analysis: locally homogeneous flow (LHF); deterministic separated flow (DSF); and stochastic separated flow (SSF). For the particle-laden jets, the LHF and DSF models did not provide very satisfactory predictions. The LHF model generally overestimated the rate of decay of particle mean axial and angular velocities with streamwise distance, due to the neglect of particle inertia. The LHF model predictions of particle mass flux also showed poor agreement with measurements due to the assumption of no-slip between phases. The DSF model also performed quite poorly for predictions of particle mass flux, because turbulent dispersion of the particles was neglected. The SSF model, which accounts for both particle inertia and turbulent dispersion of the particles, yielded reasonably good predictions throughout the flow field for the particle-laden jets

    Fibre Degradation Rate of Perennial Ryegrass Varieties Measured Using Three Techniques: \u3cem\u3eIn Situ\u3c/em\u3e Nylon Bag, \u3cem\u3ein Vivo\u3c/em\u3e Rumen Evacuation and \u3cem\u3ein Vitro\u3c/em\u3e Gas Production

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    In Western Europe, perennial ryegrass is the most widely used grass species for grazing cattle, because of its high productivity, palatability and nutritive value. However, the low dry matter intake (DMI) of perennial ryegrass pasture has been identified as a major factor limiting milk production of high producing dairy cows. Altering the chemical, physical and mechanical characteristics that contribute to its low DMI through grass breeding and the choice of variety may be a way forward in trying to maximise its DMI. This study aimed to examine whether perennial ryegrass varieties differ in their NDF degradation rates (kdNDF)

    A proposed cloud-based billers hub using secured e-payments system

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    Automation of several payment processes from start to end is a challenging task, particularly when multiple payments from online and offline billers are involved. In this paper, we introduced a new aggregator system to combine all billing system types, in which it is possible to pay invoices electronically. The proposed aggregator system was designed to be employed in a cloud-based Billers Hub (CBBH) developed by the central banks. Furthermore, many applications can be realized such as; deposit e-money, withdrawal e-money, and other applications. A Gateway translator is used to apply authentication rules, security, and privacy. The proposed system was employed in the Jordanian payment gateway and successfully fulfills its purpose
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