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Search Results: 1 - 10 of 271 matches for " Majeed "
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Studying the Preheating Effect on Certain Mechanical Properties of the Coating Layer by Vacuum Ion Plasma Coating  [PDF]
Abdul Jaleel Hamad Majeed
Modern Mechanical Engineering (MME) , 2015, DOI: 10.4236/mme.2015.54010
Abstract: The present paper is concerned with the study of two main points: clarifying the effect of preheating on the surface microscopic shape of coating layer by vacuum ion plasma coating technology and on the amount of micro-hardness besides studying the properties of the surfaces that concern the parts of the mechanical system because of their direct and active effect on the machine efficient performance and machine life in general and their important effect on the product efficiency. As known, the instruments that measure the traditional roughness give us numbers and charts that, to a certain extent, describe the actual state of the surface shape within limited range of accuracy, but it has become necessary to find more accurate methods that suit the development obtained in industry, namely, the important applications like aircraft missiles and others. One of the suggested solutions for this is to get benefit of average fractal dimension for the surface by the help of the new technologies which, in return, help in the possibility to determine the surface state with high accuracy that matches the importance of application.
Chip Design for In-Vehicle System Transmitter  [PDF]
Majeed Nader, John Liu
Journal of Computer and Communications (JCC) , 2018, DOI: 10.4236/jcc.2018.65006
Abstract: This paper presents embedded system design of the In-Vehicle System (IVS) for the European Union (EU) emergency call (eCall) system. The IVS transmitter modules are designed, developed and implemented on a field programmable gate array (FPGA) device. The modules are simulated, synthesized, and optimized to be loaded on a reconfigurable device as a system-on-chip (SoC) for the IVS electronic device. All the modules of the transmitter are designed as a single embedded module. The bench-top test is completed for testing and verification of the developed modules. The hardware architecture and interfaces are discussed. The IVS signal processing time is analyzed for multiple frequencies. A range of appropriate frequency and two hardware interfaces are proposed. A state-of-the-art FPGA design is employed as a first implementation approach for the IVS prototyping platform. This work is used as an initial step to implement all the modules of the IVS on a single SoC chip.
Towards the Contribution of NEMDBs in Global Genetic Heterogeneity
Saman Majeed
International Journal of Emerging Sciences , 2011,
Abstract: Research into disease genetics has advanced many folds after the completion of Human Genome Project. Disease Genetics is a complex research area involving core databases, locus-specific databases, and National Ethnic/population Mutation Databases (NEMDBs). Recent progress in disease genetics has emphasized the need of population specific mutation repositories. This has given way to the development of NEMDBs worldwide. To emphasize its importance, a timely overview is presented highlighting the need for a Genetic Disease Database for Pakistan, stressing its over-riding importance and discussing the seriously lacking progress made so far in its accomplishment. Data management has been the greatest problem with the outburst of genetic data being generated in the subcontinent. Many factors contribute to this slow progress. The primary cause is limited funding. It is arguably the most fundamental problem for this kind of research to take place along with the intrinsic research bias towards acquiring new data rather than managing the old data. Valuable discoveries that deal with the genetic basis of disease are therefore being wasted, and this can only be remedied by creating a National Mutation Database specific to Pakistani population. Advancement in scale and sophistication has resulted in vast amount of data being generated. Therefore, there should be possibility to correlate all of this information to ascertain a detailed understanding of how genetic differences influence human health.
Learning Environment of Manufacturing and Service Sectors of Pakistan: A Comparison
Abdul Majeed
International Journal of Management and Organizational Studies , 2013,
Abstract: The objective of this paper is to examine the supportive learning environment between manufacturing and service sectors of Pakistan. For this purpose four elements of “supportive learning environment” have been studied which are further divided into eighteen variables provided by Garvin, Edmondson et al. (2008). Original questionnaire is used to collect data from manufacturing as well as service sectors of Pakistan. For the evaluation of results arithmetic mean and factor analyses were applied. To ensure the reliability of data Cronbach’s Alpha value was measured. Results show that supportive learning environment is better in service sector as compare to manufacturing sector of Pakistan.
Heparin induced thrombocytopenia-type 2
Majeed Tanveer
Asian Journal of Transfusion Science , 2010,
Abstract:
Rock Art of Saudi Arabia
Majeed Khan
Arts , 2013, DOI: 10.3390/arts2040447
Abstract: It is not only oil in which Saudi Arabia is rich, but it is also among the four richest rock art regions of the world. Hundreds and thousands of petroglyphs, painted rock art, and ancient Arabian inscriptions sites are located all over the country, representing various cultural phases, from the Neolithic until the recent past. One can see the naturalistic, schematic, abstract, mythical, and mystical images representing ancient ideology, thoughts about the metaphysical world, religious entity, economy, environment, human activities, and variety of animal types, according to particular climatic and environmental conditions. The rock art of Saudi Arabia is the mirror of its rich cultural heritage of so-called Bedouin or desert dwellers that surprises the world with its 4000 archaeological and more than 1500 rock art sites.
Effects of Surgery and Palliative Chemotherapy in the Treatment of Colorectal Liver Metastasis  [PDF]
Nigel Bird, Ruth Bird, Ali Majeed
Surgical Science (SS) , 2011, DOI: 10.4236/ss.2011.26066
Abstract: Purpose: 1) To compare the survival of patients with colorectal liver metastases who underwent resection as the primary treatment against patients who had chemotherapy as the primary treatment. 2) To compare the survival in patients with recurrent inoperable liver metastases (after resection) treated with Oxaliplatin or Irinotecan against those patients with inoperable recurrence who were treated with 5-FU. Patients and Methods: 538 patients with colorectal liver metastases were referred to our unit between November 1997 and May 2005; 247 underwent liver resection and 291 had palliative chemotherapy. Results: Only 7.8% of non-operated patients survived for 5 years compared to 31.5% of the liver resection group. After surgery, 191 patients developed inoperable recurrent disease. These patients were treated with chemotherapy; Ox/Ir patients had a 3 year survival of 55% compared to 32% of those who received 5-FU. Our data shows that in patients who relapse after liver surgery, chemotherapy with Oxaliplatin or Irinotecan confers a significant survival benefit.
Kinetics and Thermodynamics of Adsorption Methylene Blue onto Tea Waste/CuFe2O4 Composite  [PDF]
Saeedeh Hashemian, Majeed Karimi Ardakani, Hamila Salehifar
American Journal of Analytical Chemistry (AJAC) , 2013, DOI: 10.4236/ajac.2013.47A001
Abstract:

Tea waste/CuFe2O4 (TW/C) composite was prepared by co-precipitation method. The TW and TW/C samples are characterized by FTIR, XRD, SEM and N2 physical adsorption. The results showed that specific surface area of 350 and 570 m2·g?1 for TW and TW/C, respectively. The average pore size of TW/C is ca. 100 nm. Adsorption of methylen blue onto TW/C composite has been studied. Measurements are performed at various contact time, pH and adsorbent dosage. The adsorption kinetics of methylen blue (MB) could be described by the pseudo-second order kinetic model. The adsorption isotherms are described by means of Langmuir and Freundlich isotherms. It was found that the Freundlich model fit better than the Langmuir model. The thermodynamic constants of the adsorption were calculated to predict the nature of adsorption. The values of thermodynamic parameters indicate that a spontaneous and endothermic process was occurred.

Thermochemical Parameters of 3-Chloroaniline Complexes of Certain Bivalent Transition Metal Bromides  [PDF]
Pedro Oliver Dunstan, Abdul Majeed Khan
Open Journal of Physical Chemistry (OJPC) , 2013, DOI: 10.4236/ojpc.2013.34020
Abstract:

Complexes of general formula [MBr2(3-clan)n] (where M is Fe, Ni, Cu or Zn; 3-clan = m-chloroaniline; n is 1.5 or 2) were prepared and their characteristic properties, such as capillary MP; C, H, N, Br and metal contents; TG/DTG and DSC curves; and IR and electronic spectra were determined. By calorimetric measurements in solution, the values of some thermodynamic parameters of the complexes were determined. From these values, the standard enthalpies of the metal-nitrogen coordinated bonds were calculated, and the standard enthalpies of the formation of the gaseous phase complexes were estimated.

System Identification of Acoustic Characteristics of Enclosures with Resonant Second Order Dynamics
Shabbir Majeed Chaudhry;Alina Majeed Chaudhr
PIER , 2006, DOI: 10.2528/PIER06010702
Abstract: This research concerns offline identification of acoustic characteristics of enclosures with second-order resonant dynamics and their modeling as linear dynamic systems. The applied models can be described by basis function expansions. The practical problem of acoustic echo in enclosures is used as the target problem to be addressed. It has been found out that the classical filters are ineffective filter structures for approximating an echo generating system, due to their many required parameters. In order to reduce the number of estimated parameters, alternative methods for modeling the room impulse response need to be investigated. Out of various available techniques impulse response identification is utilized. With the help of given experimental data, the enclosures' impulse response is modeled using special orthonormal basis functions called Kautz functions. As another improved approximation, hybrid multistage system identifiers have been used in which the simplicity of classical filter structures and fast convergence of orthonormal structures is utilized as an advantage.
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