Investigation of Geology and Hydro-geophysical Features Using Electromagnetic and Vertical Sounding Methods for Abu Zabad Area, Western Kordofan State, Sudan

The geology and hydro-geophysical features can aid in identifying borehole location. The study aims to investigate groundwater aquifers and best location of boreholes in the crystalline basement area of Abu Zabad near El Obeid Southwest, Sudan. The study area is underlain by two aquifers formations from Precambrian age. The oldest units of basement complex of area under investigation consist of metamorphic rocks including gneiss, schist, and quartzite.The geophysical methods electromagnetic (EM) and vertical electrical sounding (VES) surveys showed that best aquifers yield for construction of boreholes are in weathering and fractures formation. The EM results revealed that structural features are significant for groundwater potential and interpretation of the VES data also revealed four geo-electric layers, but generally two distinct lithologic layers, which include Superficial deposit and bedrock-basement respectively. The curves generated from the data revealed H curve and HK curve, and thickness of these layers varies from 15 m to 50 m in the area. The aquifer thickness range from 20 m to 30 m. The study concludes that these techniques are suitable for identifying borehole location in the basement rock in Abu Zabad Area Sudan

On the bounds of the expected nearest neighbor distance

In this paper, we give some contributions for special distributions having unbounded support    for which we derive upper and lower bounds on the expected nearest neighbor distance of the extreme value (Gumbel) distribution as typical

Prevalence of Human T- cell Lymphoma/Leukaemia Virus among Sudanese Blood Donors in Wad Medani, Sudan

Abstract: Background: HTLV type I/II is a blood borne infection that can be transmitted via blood transfusion. Objective: To determine the seroprevalence of human T – lymphotropic virus among blood donors in Wad Medani Central Blood Bank, Sudan. Methods: A total of 540 serum samples were collected from blood donors who visited the Wad Medani Central Blood Bank from January to July 2013. These sera were screened by ELISA for the determination of antibodies to T- Human Cell Lymphotropic Virus type 1/11.  Results: Only one out of 540 (0.2%) samples was found to be positive for HTLV-I/II while 539 (96.4%) samples were negative. Conclusion: The seroprevalence of HTLV-I/II among the blood donors in Wad Medani Central Blood Bank was found to be very low, 0.20%. Therefore, there is no need for routine screening of blood donors for this virus. The introduction of these extra serological tests to the tests that already were carried out may have an extra financial burden, but because of the seriousness of the diseases that were caused by this virus, these tests should be carried out

Easily measureable morpho-physiological traits as selection criteria for terminal drought tolerance in groundnut (Arachis hypogaea L.)

This study was conducted at El Obied Research Station Farm, North Kordofan State Sudan, with the objective of identifiying easily measurable morpho-physiolgical traits that could be used in drought tolerance breeding programs. Nine groundnut mutants together with three parents were evaluated under normal and terminal drought stress environments in 2003 and 2004 cropping seasons in a randomized complete block design with four replications. The genotypes did not differ significantly in the number of days to 75% emergence, with  a range of 6-8 days. Most of the measured traits showed higher values under normal than under stressed environments. Under stressed environment, some mutants like Barberton-B-30-3 and Barberton-B-30-4, exceeded their parents in pod yield (PY) /plant, dry matter production (DM) and leaf relative water content (LRWC), whereas they showed lower specific leaf area (SLA), canopy temperature (CT) and leaf senescence (LSENS) than their parents. CT, LRWC, LSENS and PY showed relatively medium broad-sense heritab-ility estimates under stress environment. PY was positively, significantly and genotypically correlated with DM and LRWC while significantly and negatively correlated with SLA, CT and LSENS under stress enviro-nment. Since these traits are reasonably heritable, strongly correlated with PY under stress enviroment and easily measurable under field conditions, they could be suggested as selection criteria for droguht tolerance in groundnut. The mutant Barberton-B-30-3, which produced the highest PY, DM and LRWC, under terminal drought stress, could be suggested as the best drought tolerant mutant in this study bending further testing over years and locations. &nbsp

Some Features of Joint Confidence Regions for the Parameters of the Inverse Weibull Distribution

In this paper, we will study the joint confidence regions for the parameters of inverse Weibull distribution in the point of view of record values. One of the applications of the joint confidence regions of the parameters is to find confidence bounds for the functions of the parameters. Joint confidence regions for the parameters of extreme value distribution are also discussed. In this way we will discus some numerical examples with real data set and simulated data, to illustrate the proposed method. A simulation study is performed to compare the proposed joint confidence regions. Keywords: The joint confidence regions, confidence bounds; inverse Weibull distribution, extreme value distribution

Manifold Diffusion Fields

We present Manifold Diffusion Fields (MDF), an approach that unlocks learning of diffusion models of data in general non-Euclidean geometries. Leveraging insights from spectral geometry analysis, we define an intrinsic coordinate system on the manifold via the eigen-functions of the Laplace-Beltrami Operator. MDF represents functions using an explicit parametrization formed by a set of multiple input-output pairs. Our approach allows to sample continuous functions on manifolds and is invariant with respect to rigid and isometric transformations of the manifold. In addition, we show that MDF generalizes to the case where the training set contains functions on different manifolds. Empirical results on multiple datasets and manifolds including challenging scientific problems like weather prediction or molecular conformation show that MDF can capture distributions of such functions with better diversity and fidelity than previous approaches.Comment: ICLR24 pape

Comparison of magnetized and normal water on yield and yield components of banana and hydraulic performance of drip irrigation system

     An experiment was conducted at the Horticultural Research Centre Farm of the Agricultural Research Corporation (ARC), Wad Medani, Sudan during seasons 2010 through 2012 to evaluate effects of magnetic water technology on yield, and yield components of banana cv. Albeily and hydraulics of drip irrigation system. Two types of irrigation water were used: magnetic water and normal water. The plot of each type of irrigation water consisted of 4 banana plants. The two treatments were replicated 5 times. The results revealed that applying magnetic water increased plant height and girth of banana and attained fewer days from planting to flowering and from flowering to harvest compared to normal water. Bunch weight and number of hands per bunch were also higher for magnetic water.  Magnetic water improved the hydraulic performance of drip irrigation system compared to normal water.        اجريت هذه الدراسة بمزرعة مركز بحوث البساتين، هيئة البحوث الزراعية، واد مدني السودان في الفترة من 2010 وحتي 2012 لتقييم أثر تقنية مغنطة المياه على الانتاجية  ومكونات انتاجية الموز والاداء الهيدرولوكي للري بالتنقيط صنف البيلي. استخدم نوعين من مياه الري مياه ممغنطة ومياه عادية. الوحدة في كل نوع من مياه الري ضمت اربع نباتات والمعاملتين تم تكرارها خمس مرات. اظهرت النتائج ان المياه الممغنطة ادت الي زياده في طول وسمك الساق الكاذبة للموز وكذلك الي تقليل الايام من الزراعة الي الازهار ومن الازهار الي الحصاد. كما اظهرت النتائج ان وزن السبيطة وعدد الكفوف في السبيطة كان اعلي تحت المياه الممغنطة. أدت مغنطة مياه الري الي تحسين الاداء الهيدرولوكي لنظام الري بالتنقيط مقارنة مع المياه العادية.  &nbsp

OWL-POLAR : semantic policies for agent reasoning

The original publication is available at www.springerlink.comPostprin

An Investigation of Inference of the Generalized Extreme Value Distribution Based on Record

In this article, the maximum likelihood and Bayes estimates of the generalized extreme value distribution based on record values are investigated. The asymptotic confidence intervals as well as bootstrap confidence are proposed. The Bayes estimators cannot be obtained in closed form so the MCMC method are used to calculate Bayes estimates as well as the credible intervals. A numerical example is provided to illustrate the proposed estimation methods developed here. Keywords: Generalized extreme value distribution, Record values, Maximum likelihood estimation, Bayesian estimation