Design and Implementation of a Virtual Machine Video Conferencing Application

Videoconferencing today is faced with the challenge of limited number of participants per time, and also the need for large and fully equipped conference rooms. This might not be a problem to a large enterprise, but for the small to medium-sized business, access to a videoconferencing facility involves either a very costly rental fee or is completely impossible. The aim of this work is to design and implement a videoconferencing prototype (OpenMeeting) with added functionalities which will solve problems facing the traditional way of conducting meetings

S. F. Dike\u27s Resignation as trustee of Agriculture College

https://digitalmaine.com/arc_sos_corr/1016/thumbnail.jp

Pengolahan Limbah Batubara Atau Abu Terbang (Fly Ash) Untuk Pembuatan Genteng Pres Ringan

ABSTRAK Produk sisa pembakaran batubara adalah gas (SO3, NO3, CO2), dan abu yang berupa abu terbang (fly ash) dan abu dasar (bottom ash). Abu terbang tidak _mempunyai nilai ekonomi dan bersifat sebagai pencemar lingkungan. Untuk itu perlu dicari altematif pemanfaatan abu terbang agar bahan tersebut dapat berguna. Tujuan penelitian ini adalah mempelajari kemungkinan pemanfaatan abu terbang untuk pembuatan genteng pres ringan dengan inetode perendarnan. Parameter yang diteliti adalah variasi komposisi abu terbang dan variasi waktu perendaman. Hasil yang diperoleh menunjukkan bahwa kondisi terbaik untuk menghasilkan genteng pres ringan tercapai pada perbandingan apur pasir 1: 1, pada komposisi fraksi abu terbang 60% dengan waktu perendaman 24 hari. harga modulus patah 36,8140kg/cm , bulk density 1,6004g/cm , daya serap 16,430% dan kedap air (kering). Sedangkan untuk perbandingan kapur pasir 1 : 2, pada komposisi fraksi abu terbang 50% dengan waktu perendaman 18 hari. Harga modulus patah 27,3818kg/cm , bulk density 1,6550g/cm , daya serap 15,080% dan kedap air (kering). Menurut harga modulus patah, bulk density, dan tahanan terhadap perernbesan air, genteng pres ringan dari abu terbang memenuhi klasifikasi SII No.0447/81 UDC. 0666-74 sebagai genteng beton tipe II

Investigation of the Concentration of some Metals in Blood Cockle (Senilia senilis) and Oyster (Crassostrea gasar) from Bonny Estuary and Assessment of the Human Health Risk Associated with their Consumption

There is a growing concerns over the health risk of consuming seafood contaminated with poisonous metals from human activities.  This study examined the concentration and human health risk of Pb, Cd, Cr, Ni, Co, Zn, V and Hg associated with the consumption of blood cockle (Senilia senilis) and oyster (Crassostrea gasar) from Bonny Estuary, Rivers state Nigeria by analyzing the levels of the selected metals using Atomic Absorption Spectrometer Model A 200 AA. Data were used to calculate the non-carcinogenic health risk using Daily Intake Rate (DIR) Target Hazard Quotient (THQ) and Hazard Index (HI). The results showed variations in the concentration of the different heavy metals in the two shellfish. The trend of the metal concentrations in decreasing order was: Crassostrea gasar > Senilia senilis. Levels of metals in Senilia senilis, were all below the WHO and FAO permissible limit for fish. Also, all metals except Pb were below the WHO maximum permissible limit in Crassostrea gasar. The DIR (9.4684E-06 - 0.00281); THQ (8.286E-07 – 1.842E-04) and HI (2.519E-05 -2.595E-04) for all metals were below one indicating no risk for non-carcinogenic effects individually and collectively.  The shell fish analyzed from the Bonny Estuary are free from potential human health hazards from heavy metals. However, continuous monitoring of levels of metals in fish from the estuary is recommended

Statistical Properties and Applications of a Transmuted Exponential-inverse Exponential Distribution

The Quadratic rank transmutation map was proposed and studied for introducing skewness and flexibility into probability models with a single parameter known as the transmuted parameter. This methodology has received greater attention and application using several classical distributions. However, the Exponential Inverse Exponential distribution has not been transmuted since its introduction. This article used the Quadratic rank transmutation map to add flexibility to the Exponential Inverse Exponential distribution which resulted to a new continuous distribution called “Transmuted Exponential Inverse Exponential distribution”. This paper has presented the definition, validation, properties, applications and estimation of unknown parameters of the transmuted Exponential Inverse Exponential distribution using the method of maximum likelihood estimation. The new distribution has been applied to three real life datasets and results provided evidence that it is better than the other existing distributions based on the datasets used. Thus, this new model can be applied fully in modeling real life problems most especially in survival analysi

Emulation of power system load dynamic behavior through reconfigurable analog circuits

Paper presented at 2006 IEEE International Symposium on Circuits and Systems, Island of Kos, Greece.Emulation of power system dynamic load behavior is a viable alternative to popular simulation methods. In this paper, a circuit designed to emulate the dynamic behavior of power system loads is presented. It is constructed from common analog components and is fully reconfigurable via a set of analog input signals. As load behavior is heavily dependent on that of the external network, it is important to demonstrate how this reconfigurable analog load emulation module (RALEM) may be utilized in dynamic power flow studies. Such a demonstration is presented. These studies provide the network's transient and steady-state flow of power in real-time or faster. This is of importance as popular simulation methods cannot provide a solution with such speed

Levels of Lipid Peroxidation Products in Fried Protein and Carbohydrate Foods Sold in an Institution of Higher Learning in North Central Region of Nigeria

Four typical local protein foods namely fried beans (akara), fish, beef and chicken and five carbohydrate foods namely buns, fried yam, potatoes, plantain and jellof rice as commonly consumed in the institution were evaluated for malondialdehyde and malonaldehyde levels as part of nutritional evaluation by our research group. The fried foods were purchased from food vendors within the University and lipid peroxidation assays carried out using standard methods. The levels of lipid peroxidation by malondialdehyde in akara, bony fish, chiken and beef were 3.88±1.29, 3.39±1.13, 3.86±1.30 and 2.75±1.38 respectively. In the same manner, the levels of lipid peroxidation aldehydes were 3.43±1.14, 3.87±1.29, 1.51±0.75 and 1.66±1.66 for akara, fish, beef and chicken respectively. Among the carbohydrate foods, buns and fried yam had the highest level of malondialdehde and malonaldehyde while the fried plantain, potatoes and jellof rice contained less of the peroxidation products. All the protein and carbohydrate samples contained degradation products of lipid peroxidation and various levels of deteriorations. The lipid hydrogen peroxide and carbonyls detected call for caution in using frying as a local preparation method of carbohydrates and proteins. Keywords: lipid peroxidation, frying, carbohydrate, protein

Synthesis of benzodipyrandiones

The reaction of hydroxycoumarins, flavones, isoflavones and chromones with α, β-unsaturated acids, in the presence of PPA has been found to give a number of compounds whose structures have been elucidated on the basis of spectral data and the formation of 2, 4-DNP derivatives

Phytowaste as nutraceuticals in boosting public health

AbstractThe utilization of bioactive constituent of peels and seeds provide an effective, environment friendly and inexpensive therapy for different forms of human disease, and the production, improvement and documentation of novel nutraceuticals. This review systematically presents findings and further understanding of the reported benefits and therapeutic applications of peel and seed extracts on innovative cell culture and animal studies, as well as phased clinical human trial research. The extracts of seed and peels were reported to possess high quantities of bioactive substances with antioxidative, antidiabetic, hepatorenal protective, antithyroidal, anti-inflammatory, antibacterial, cardiovascular protective, neuro-protective effects, anticancer and wound healing activities. Therapeutic activities of the bioactive substances of peel and seed extracts include elevation of Superoxide dismutase (SOD), GSH-Px, t-GPx, Catalase and GST activities, with the suppression of MDA levels, hydroperoxide generation and lipid peroxidized products, the extracts also regulate inflammatory mediators and cytokines as they are reported to suppress the secretion of inflammatory cytokines, which include; IL-1β, PGE2, TGF-β and TNF-α and induces apoptosis and cell differentiation. This review revealed the therapeutic importance and best utilization of peels and seed extracts of fruits and vegetables