Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
An Assessment of Automobile Emissions in Irbid, Northwest Jordan
Talal Mohammad Al Momani,Ahmad A Altaani,Amjad D Al Nasser,NAZEM M El-Radaideh
Electronic Journal of Applied Statistical Analysis , 2011,
Abstract: Investigation of pollutants emitted by gasoline vehicles in metropolitan area of Irbid, Jordan has revealed four major factors affecting the emission rates of carbon monoxide (CO), carbon dioxide (CO2) and hydrocarbon (HC) and contributing to emission tests failure. These variables are vehicle age, fuel delivery system, fuel composition and availability of catalytic converter. Our observation also indicated that maintenance program has strong correlations with CO2 and HC but is poorly correlated with CO concentrations. Engine size and daily driving distance showed no statistically significant relationship with vehicular emissions. Structural equation modeling has been implemented to evaluate the cause-effect relationships among three constructs: vehicle variables, pollutants concentrations and emission test results. Results showed that fuel delivery system has significant effects on both CO and CO2 emissions and among the pollutants only CO2 has an influence on the emission test results. The highest total effect of fuel delivery system on CO2 concentrations and consequently on the test result is -0.0097.
Multivariate Analysis of Soil Heavy Metals Pollution Along Irbid – Zarqa Highway
Sana’a Odat
International Journal of Engineering Science and Technology , 2012,
Abstract: Problem statement: In this study, selected statistical methods (Correlation analysis, Principal component analysis and Multivariate analysis) were used to determine the heavy metal accumulation and itscontrolling factor and to identify the origin of these metals in soil samples collected from sediment of Irbid, Jordan. Approach: Twenty one soil samples were collected and analyzed in the laboratory for some heavy metals by atomic absorption Spectrophotometric method and multivariate statistical techniques. Results: The overall decreasing metal concentration order was: Fe > K > Mg > Mn >Na > Cu >Pb > Zn . Significantly positive correlation was only found between Cu, Mn and Zn in one hand and between PH and NO3 in the other hand. Factor analysis shows that sediment quality data consists of four major components accounting for 74.982% of cumulative variance of the contamination: Conclusion: This study concluded that the concentrations of all metals measured in Irbid can be considered to present a low level of contamination and that multivariate statistical analysis is a useful tool in understanding contaminants relationships.
Environmental Effects of the Open Cast Mining a Case Study: Irbid Area, North Jordan  [PDF]
Awwad Titi, Mohammed Dweirj, Khalid Tarawneh
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.56041
Abstract: Jordan has huge limestone reserves which are used to produce aggregates for construction purposes. These reserves are very important economic sectors in Jordan, but many of these reserves belong to quarries that are located near urban territories. The mining operation type is mainly open cast and this activity has fugitive dust sources that contribute to increasing air quality levels in the urban areas around the quarries. Many of the biggest quarries in Jordan surrounded with urban territories are located in the north of Jordan district Irbid (Sammad area). Due to the quarrying activities, especially those from limestone quarrying (e.g. drilling and blasting, excavation, and transportation) in North Irbid, it is noticed that there is a primary source of an increased level of particulate matter (PM10), which leads to a potential representing pollution to the surrounding areas. PM consists of very small liquid and solid particles floating in the air with a diameter less than 10 microns that are subject to be inhaled into the deepest parts of the lung, and subsequently cause harmful health problems for population. PM10 dust re-suspension factors of the surrounding areas near the limestone quarries close to Sammad area/Irbid province were measured for different seasons at two station areas: Shatana and Rahma. To obtain data and assessment of the impact from this source, measurements included PM10 mass, particle size distributions, wind speed, and wind direction. The results showed that PM10 concentrations could be as high as 130 μg/m3, and that most of the airborne PM was in the coarse fraction. The results revealed that in winter season during the workday, the concentration of PM10 was equal to or below the Jordanian standard, while in summer season during workday the concentration of PM10 was over the Jordanian standard. However, forward trajectories showed that pollutants were attributed to the mining activities inside the quarries and distributed outside the mining area surrounding with urban territories.
Suitability of Irbid Clay as Compacted Liners for Landfill, Jordan  [PDF]
Omer S. Mughieda, Munjed Al-Sharif
International Journal of Geosciences (IJG) , 2013, DOI: 10.4236/ijg.2013.410148

The goal of this study is to investigate the possibility of using the Irbid city clayey soil as compacted clay liner. The geotechnical properties and the permeability characteristics of compacted clayey soil sample obtained from the eastern part of Irbid city were determined to evaluate their suitability as compacted clay liner. Falling head permeability test, unconfined compressive strength and volumetric shrinkage test were conducted on soil samples that were compacted at about 0% and 3% wet of its optimum water content. The leakage rates expected through clay-only and composite geomembrane-clay liners were determined. It could be concluded based on the results of the geotechnical tests and leachate rate calculations that Irbid clay is appropriate to be used as compacted landfill liner material.

The Use of GIS in Urban Planning in Irbid City  [PDF]
Osameh Al Kassawneh
Journal of Geographic Information System (JGIS) , 2015, DOI: 10.4236/jgis.2015.74036
Abstract: The GIS is one of advanced scientific means through which you can complete the planning in a realistic, accurate and effective way. By using GIS we are able to analyze the places and zones and couture lines for services. Therefore, the finance and time savings that might be supplied to Irbid Municipality were preparing millions in addition to large accuracy in the data presented.
Bab al–Yaman  [cached]
Roman Stadnicki
Chroniques Yéménites , 2006,
Abstract: Bab al–Yaman, porte méridionale de la ville de Sanaa, est devenue, un siècle après sa reconstruction, à la fois le symbole d’une identité urbaine héritée et l’emblème de la vitalité politique et culturelle du Yémen. C’est l’analyse de la persistance et de la symbolisation d’une forme urbaine archétypale qui est ici proposée à travers une triple lecture : celle des perceptions des citadins qui recentrent la porte dans les pratiques spatiales, celle, interprétative, des représentations iconographiques de Bab al–Yaman qui s’inscrivent dans un processus de valorisation des richesses patrimoniales et culturelles du pays, et, enfin, celle des discours de quelques acteurs institutionnels qui font de la porte un objet de revendications. One century after its reconstruction, the southern gate of Sana’a, Bab al–Yaman, has become not only the symbol of an ancient urban identity but also the emblem of Yemen’s political and cultural vitality. This article analyses the persistence and the symbolization of such an archetypal urban form through three levels of interpretations: first, the city dwellers’ perceptions, which replace the gate in spatial practices; then the iconographic representations of Bab al–Yaman, which are in line with the process of promotion of Yemen’s patrimonial and cultural treasures; and last but not least, the discourse analysis of some institutional actors, who have turned the gate into an object of claim.
The Variant of “Ech” to “Ek” among Residents of Irbid Governorate in Light of Gender and Age  [cached]
Nedal Rashed Odeh Al-Masaeed
International Journal of English Linguistics , 2012, DOI: 10.5539/ijel.v2n5p60
Abstract: The main objective of the study was to examine the variant of the sound (ech) to (ek) among residents of Irbid governorate in light of both gender and age. Sample of the study consisted of nine participants (5 females and 4 males) selected using purposeful sampling from the families residing in Irbid governorate. The sample was from different age groups. The researcher used a qualitative interview to collect data. Results of the study indicated that “ech” variant to “ek” was more apparent among youth participants. It was found that this age group used more “ek” compared to “ech” as they were in more contact with people who do not use “ech” in their speech. It was also found that female participants use more “ek” sound variation compared to males among youth and middle age participants, but not among elderly. The study concluded with some recommendations.
Project to install roman pot detectors at 220 m in ATLAS  [PDF]
C. Royon,for the RP220 Collaboration
Physics , 2007,
Abstract: We give a short description of the project to install roman pot detectors at 220 m from the interaction point in ATLAS. This project is dedicated to hard diffractive measurements at high luminosity.
Taqman Real-Time PCR Detects Avipoxvirus DNA in Blood of Hawaìi `Amakihi (Hemignathus virens)  [PDF]
Margaret E. M. Farias,Dennis A. LaPointe,Carter T. Atkinson,Christopher Czerwonka,Rajesh Shrestha,Susan I. Jarvi
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0010745
Abstract: Avipoxvirus sp. is a significant threat to endemic bird populations on several groups of islands worldwide, including Hawaìi, the Galapagos Islands, and the Canary Islands. Accurate identification and genotyping of Avipoxvirus is critical to the study of this disease and how it interacts with other pathogens, but currently available methods rely on invasive sampling of pox-like lesions and may be especially harmful in smaller birds.
bab2o4—cdo和bab2o4—zno二元系相图的研究  [PDF]
无机化学学报 , 1989,
Abstract: 本文用差热分析和x射线衍射方法测定了bab2o4-cdo和bab2o4-zno二元系相图。在bab2o4-cdo体系中存在着一新化合物bacdb2o5,在785±3℃同成份熔化。在bab2o4-zno体系中,由包晶反应形成一新化合物bazn3b2o7,反应温度为903±3℃。在富bab2o4区形成一个宽的低温相bab2o4固溶区。研究结果表明,用zn2+替代bab2o4中ba2+形成固溶体,不能将高温相bab2o4稳定到室温,证实了“经验函数关系式”的预测结果。
Page 1 /100
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.