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Search Results: 1 - 10 of 462562 matches for " Ghawi A. Hadi "
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Improvement performance of Al-Wathba settling tank by a computational fluid dynamics model
Jozef Kri , Ghawi A. Hadi
Journal of Hydrology and Hydromechanics , 2010, DOI: 10.2478/v10098-010-0019-8
Abstract: An investigation has been carried out using the FLUENT Computational Fluid Dynamics (CFD) software, which uses the finite-volume method to determine whether it is feasible to improve the capacity and quality of the clarifier at the Al-Wathba Water Treatment Works (Iraq) by some relatively inexpensive means. Simulations were carried out with two dimensional, radially symmetric models, representing the existing configuration as well as a number of proposed modifications involving baffles and additional clarified water off-takes. A convection-diffusion equation, which is extended to incorporate the sedimentation of sludge flocs in the field of gravity, governs the mass transfer in the clarifier. The standard k-ε turbulence model is used to compute the turbulent motion, and our CFD model accounts for buoyancy flow. The sludge settling velocity was measured as a function of the concentration, and we have used the double-exponential settling velocity function to describe its dependence on the concentration. The CFD model is validated using measured concentration profiles. The results were evaluated on the basis of the simulated profiles of vertical up-flow velocity in the body of the clarifier.
Knowledge Attitude and Practice of Women in Shiraz about Cervical Cancer and Pap Smear 2009
Hadi N,Azimirad A
Iranian Journal of Cancer Prevention , 2010,
Abstract: Background: Cervical cancer is one of the prevalent and mortal cancers. The aim of the study is to assess knowledge, attitude and practice of women toward this cancer and Pap smear.Methods: We carried out a cross-sectional study among 402 women through a questionnaire with 5 socio-demographic parameters and 14 questions about knowledge, attitude and practice. We aimed to know how knowledge, attitude and practice are affected by socio-demographic status and how practice is affected by knowledge and attitude.Results: The mean score was 4.09. Knowledge and age did not correlate directly. Old aged women had the best knowledge. As the number of children rose, knowledge deteriorated, vice versa about the age of marriage and education. The clerks were better than housewives and businesswomen. Just 3.5% did not consider the regular Pap as necessary (with the lower educational level). Almost 99% intended to get more information. The minority (28.1%) had the incorrect attitude toward the curability of the cancer. Most of the women referred to do Pap due to health center personnel’s advice. About 80% had undesired practice.Discussion: The educated ones had more appropriate and optimistic incorrect attitude compared to the uneducated ones. As more years pass from the age of marriage, practice gets worse. All the newly married women had the desired practice, correct attitude and intended to get more information. All the women who knew it unnecessary had undesired practice. Women with the desired practice had 9% more correct attitude and 9% more optimistic incorrect attitude compared to the undesirably practicing ones. Totally, practice is not much influenced by attitude.
Estimation Energy Band Gap of Au/ Nano-Crystal Porous Silicon/Mono-Crystal Silicon Heterojunction  [PDF]
Hasan A. Hadi
Open Access Library PrePrints (OALib PrePrints) , 2014, DOI: 10.4236/oalib.preprints.1200044
Abstract: Porous silicon layers were fabricated on p-type crystalline silicon wafers using electrochemical etching ECE process. An investigation of the dependence on applied current density to formed PS layer was made. Porosity of the porous silicon layer and thickness were determined gravimetrically. Increasing the etching current density led to increase the surface porosity and thickness.The porosity varies between 44and 77% for current densities between 25 and 85mA/2.The current density-voltage characteristics of Au/nano-crystal porous silicon/mono-crystal silicon heterojunction was examined under 7.5mW/cm2 power density illuminations. From the experimental data set, the maximum value of responsivity and band-gap energy of porous silicon are deduced to be 1.7A/W and 2.07 eV respectively at45 mA/cm2 etching current density. 
'Digital Library: A New Concept of Library ‘
Deshmukh A. Hadi A. Bari
Golden Research Thoughts , 2012, DOI: 10.9780/22315063
Abstract: This article throws light on introduction of Digital Library, Definition of Digital Library, Need, Objective, Function, Concept; Advantages & Disadvantages of Digital Library and it also describe components of Digital Library.
A. Hadi Arifin,Rahmat Budiarto
Asian Academy of Management Journal , 2008,
Abstract: Reconstruction and rehabilitation is urgently needed by Aceh, both in terms of infrastructure and its development of the economic sector. Acehnese need to face this challenge to not only reconstruct the economics of Aceh but also to reconstruct the infrastructure and to build the social life of the Acehnese people. After the tsunami, Acehnese have lost their family member and also their property. It has been three years and the reconstruction for the transformation is still going on. The primary task of transformation projects should be further intensified and the education system, infrastructure, health, social, cultural, and economic development of Acehnese need to be reconstructed. This paper tries to elaborate the political economy related to the acute problems faced by BRR and Aceh Local Government and other agencies in the region.
Bending and Deformation of Sandwich Panels Due to Localized Pressure
Bambang K. Hadi,A. Fajar
ITB Journal of Engineering Science , 2005,
Abstract: Bending and deformation of sandwich panels due to localized pressure were analyzed using both Rayleigh-Ritz and finite element methods. The faces were made of laminated composite plates, while the core was a honeycomb material. Carbon fiber and glass fiber reinforced plastics were used for composite plate faces. In the case of Rayleigh-Ritz method, first the total energy of the system was calculated and then taking the variations of the total energy, the sandwich panel deflections could be computed. The deflections were assumed by means of Fourier series. A finite element code NASTRAN was exploited extensively in the finite element method. 3-dimensional 8-node brick elements were used to model sandwich panels, for both the faces sheets and the core. The results were then compared to each other and in general they are in good agreements. Dimple phenomena were found in these cases. It shows that localized pressure on sandwich structures will produce dimple on the pressurize region with little effects on the rest of the structures.
A Critical Appraisal of Grice’s Cooperative Principle  [PDF]
Atefeh Hadi
Open Journal of Modern Linguistics (OJML) , 2013, DOI: 10.4236/ojml.2013.31008

Grice’s most influential contribution to linguistics is his theory of implicatures. He describes communication as adhering to what he calls the Cooperative Principle (CP) and argues that a basic underlying assumption we make when we speak to one another is that we are trying to cooperate to construct meaningful conversations (1975). Grice’s Cooperative Principle has been a central and controversial theme in pragmatics. A major source of controversy associated with the CP is that the term “cooperation” is open to different interpretations. In order to develop a thorough understanding of the concept, the CP and conversational implicatures should be studied within the context of Grice’s work. The present article is an attempt to critically examine various representations and interpretations of Grice’s Cooperative Principle.

Geological and Engineering Properties of Granite Rocks from Aqaba Area, South Jordan  [PDF]
Jamal Abuqubu, Reyad A. Al Dwairi, Nafeth A. Hadi, B. Merkel, V. Dunger, Hamza A. Laila
Geomaterials (GM) , 2016, DOI: 10.4236/gm.2016.61002
Abstract: Jordanian granitic rocks (JG) are highly distributed and available in huge quantities in south Jordan, Aqaba area. Granite in south Jordan (JG) is belonging to Aqaba granite complex. This study has been carried out to investigate geological and engineering properties of JG from Aqaba vicinity, south Jordan, in addition to identify and classify the different granitic rocks. 27 random samples of JG were collected from different quarries in three locations from the study area to investigate their characterization. Engineering properties of JG were tested and investigated using ultra sonic velocity test, abrasion test, flexural strength, specific gravity test, and compressive strength test. Engineering tests results show that JG has metal disk abrasion less than 21 mm, flexural strength of 16.9 Mpa, average dry specific gravity of 2.69 and very low absorption while the compressive strength results range between 60 to 90 Mpa. The results show that the engineering characterization of JG is complying with local and international specifications and standards used for classifying the decorative and building granite stones.
Boronate Derivatives of Functionally Diverse Catechols: Stability Studies
Kamal Aziz Ketuly,A. Hamid A. Hadi
Molecules , 2010, DOI: 10.3390/molecules15042347
Abstract: Benzeneboronate of catecholic carboxyl methyl esters, N-acetyldopamine, coumarin and catechol estrogens were prepared as crystalline derivatives in high yield. Related catechol compounds with extra polar functional group(s) (OH, NH2) do not form or only partially form unstable cyclic boronate derivatives.
Immobilization of Mucor racemosus NRRL 3631 Lipase with Different Polymer Carriers Produced by Radiation Polymerization
Mostafa, H.,El-Hadi, A. A.
Malaysian Journal of Microbiology , 2010,
Abstract: Lipase was partially purified from the culture supernatant of Mucor racemosus NRRL 3631. In an attempt to increase the enzyme stability, the enzyme was immobilized on poly (vinyl alcohol) PVA, radiation cross liked poly (vinyl alcohol/ vinyl pyrrolidone) PVA / PVP and poly (vinyl alcohol/ hydroxyethylmethacrylate) PVA/ HEMA hydrogels. The maximum immobilization yield (31.74 %) was obtained using PVA/ HEMA copolymer. The effect of the immobilization parameters on the enzyme such as the hydrogel composition, irradiation dose and the immobilization technique was performed. An optimum radiation dose of 15 kGy and hydrogel composition of 10 % PVA/ HEMA (9.6: 0.4 v/v) increased the immobilization yield to 60.3 %. Diffusion phenomena can be markedly increased the enzyme immobilization on the surface of the hydrogel. In this case the retained activity was approximately 81.5 % of that of the free enzyme. The profiles of immobilized enzyme activities at various pH values (4-9) and temperatures (30-80 °C) showed an overall higher stability for the immobilized enzyme than that for the free one. The half life values of the immobilized and free enzymes at 60 °C were 3.3 h and 1.73 h, respectively. The immobilized enzyme retained 69.2 % of its initial activity after three cycles.
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