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Esmail E.L.,University of Al Qadisiya
Journal of Mechanical Design, Transactions of the ASME | Year: 2012

This paper presents proposed designs of parallel hybrid transmissions with only one electric motor/generator (MG) and without any rotating clutches. The proposed motor/generator integrated hybrid transmission serves to regulate the engine's effective gear ratio (engine rotational velocity versus vehicle velocity) by mixing the engine and electric motor powers through a power controlling device. The proposed design provides some of the benefits and flexibility of a power-split design but using conventional available components in a simpler mechanical layout that makes the design compact, mechanically simple, and operationally flexible. Three commonly used transmission gear sets are used for this purpose; Simpson, Ravigneaux, and Type-6206 gear sets. With an electronic control unit, eight major modes of operation including a regenerative braking capability are shown to be feasible in the proposed hybrid transmission; one electric motor mode, two engine modes, two engine/charge modes, and two power modes. Continuously variable transmission (CVT) capability is provided with the second engine/charge mode and with the second power mode. The second power mode can be further subdivided into three hybrid submodes that correspond to the direct drive, underdrive, and overdrive of a conventional automatic transmission. The feasibility of the proposed hybrid transmission is demonstrated with a numerical example employing conventional Ravigneaux gear train. The kinematics, static torque, and power flow relations for all operation modes are analyzed in detail. © 2012 American Society of Mechanical Engineers. Source

Aswood M.S.,Universiti Sains Malaysia | Aswood M.S.,University of Al Qadisiya | Jaafar M.S.,Universiti Sains Malaysia | Bauk S.,Universiti Sains Malaysia
Advanced Materials Research | Year: 2014

Radon concentrations in fertilizer samples collected from agricultural areas in Cameron Highlands and Penang, Peninsular Malaysia were studied throughout this paper. The concentrations were measured using a sealed-can technique based on the CR-39 SSNTDs. Results indicate that the concentration of radon in the phosphorus sample was the highest whereas the minimum values were found in CDM (Cow dung manure). The levels of radon concentration were found to lie within the range of (634.01 ± 51.42 to 79.25 ± 23.24) Bq m-3. © (2014) Trans Tech Publications, Switzerland. Source

Al-Sibahy A.,University of Manchester | Al-Sibahy A.,University of Al Qadisiya | Edwards R.,University of Manchester
Construction and Building Materials | Year: 2014

This paper presents an experimental investigation and analytical simulation which aim to assess the behaviour of a new type of masonry wallette under conditions of an axial compression load at ambient temperature. Two different masonry wallettes were produced using two types of lightweight concrete blocks, the first incorporating expanded clay and the second using by-product materials which consisted of recycled waste glass and metakaolin. Both vertical and lateral deformations were measured at different positions on the wallette specimens. The load-bearing capacity was also determined. The measured results obtained were compared with analytically simulated results produced by the Abaqus/Standard finite element package. The experimental results showed that the maximum axial loads at failure were 474 kN and 558 kN for the reference and modified wallettes respectively implying corresponding bearing capacities of 7.1 MPa and 8.3 MPa. The critical path of the failure mode was similar for all of the wallettes tested and normally began underneath the load point, then passed through the concrete blocks and head joint to reach the wallette toe. The most influential factors on the analytical model are the value of penalty stiffness and imperfect wallette construction. A close agreement between the measured and simulated results has been observed, suggesting that finite element analysis provides a reliable alternative to further laboratory measurements. © 2014 Elsevier Ltd. All rights reserved. Source

Jawad H.S.A.,University of Baghdad | Naji S.A.,University of Al Qadisiya | Kassim A.B.,Technical University of Madrid
Asian Journal of Poultry Science | Year: 2016

This study was conducted to investigate the effect of Solid State Fermented Feed (SSFF) with and Without Prepared Probiotic (PP) on the live body weight, weight gain, feed intake and feed conversion ratio of a local Malaysian chicken (Akar Putra). A total of 96 day-old Akar Putra chicks, were randomly assigned to four dietary treatments (24 chicken/treatment), with 3 replicates for each (8 chicken/replicate). The four dietary treatments were the control T1 (no supplement), diet supplemented of SSFF with probiotic in the second treatment was prepared at the rate 1:1:1 (1 kg of commercial broiler feed+1 L tap water+1g PP). While the rate was 1:1:2 (1 kg of commercial broiler feed+1 L tap water+2 g PP) in the third treatment. The chickens in fourth treatment were fed on SSFF without probiotic. The feeding mixtures of T2, T3 and T4 were placed in a plastic tray which closed ad incubate for 38 h at 37±2°C for complete fermentation and used without drying. Supplementation the SSFF with PP resulted in a significant (p<0.01) increase in the males' and females'live body weight. Furthermore, (p<0.01) enhancement in the females' feed conversion ratio of supplemented treatments was observed. It can be concluded that using wet fermented feed with 1 and 2 g of prepared probiotic caused significant improvement in the production performance of Akar Putra chicken especially in the live body weight and growth rate traits. © 2016 Hasan S.A. Jawad etal. Source

Jawad H.S.A.,University Putra Malaysia | Jawad H.S.A.,University of Baghdad | Idris L.H.B.,University Putra Malaysia | Naji S.A.,University of Al Qadisiya | And 2 more authors.
International Journal of Poultry Science | Year: 2015

In an experiment with 120 Akar Putra chicken, the partial uropygialectomy effects at 4 ages on production performance was determined. The experiment comprised 5 treatments (24 chicken/treatment), with 3 replicates for each (8 chicken/replicate). Experimental treatments consist of a control treatment T1, partial ablation of uropygial gland (uropygialecomy) were applied on T2, T3, T4 and T5 treatments at 3, 4, 5 and 6 weeks, respectively. Body weight, weight gain, feed intake and feed conversion ratio for males and females were recorded weekly. The results revealed remarkable significant (p<0.01) enhancing for partial uropygialectomy treatments than control group in all of males and females body weight, weight gain, feed intake and feed conversion ratio measurements. Variation ratio of production performance parameters for Partial Uropygialectomy treatments than control group was calculated to support the results. Best results were indicated in T2 treatment when partial uropygialectomy performed at week 3. © Asian Network for Scientific Information, 2015. Source

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