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  Subjects -> ENGINEERING (Total: 2268 journals)
    - CHEMICAL ENGINEERING (190 journals)
    - CIVIL ENGINEERING (183 journals)
    - ELECTRICAL ENGINEERING (103 journals)
    - ENGINEERING (1201 journals)
    - ENGINEERING MECHANICS AND MATERIALS (380 journals)
    - HYDRAULIC ENGINEERING (55 journals)
    - INDUSTRIAL ENGINEERING (67 journals)
    - MECHANICAL ENGINEERING (89 journals)

CIVIL ENGINEERING (183 journals)                     

Showing 1 - 183 of 183 Journals sorted alphabetically
ACI Structural Journal     Full-text available via subscription   (Followers: 17)
Acta Polytechnica : Journal of Advanced Engineering     Open Access   (Followers: 2)
Acta Structilia : Journal for the Physical and Development Sciences     Open Access   (Followers: 2)
Advances in Civil Engineering     Open Access   (Followers: 35)
Advances in Structural Engineering     Full-text available via subscription   (Followers: 28)
Ambiente Construído     Open Access   (Followers: 1)
American Journal of Civil Engineering and Architecture     Open Access   (Followers: 30)
Architectural Engineering     Open Access   (Followers: 4)
Archives of Civil and Mechanical Engineering     Full-text available via subscription   (Followers: 1)
Archives of Civil Engineering     Open Access   (Followers: 10)
Archives of Hydro-Engineering and Environmental Mechanics     Open Access   (Followers: 2)
ATBU Journal of Environmental Technology     Open Access   (Followers: 4)
Australian Journal of Structural Engineering     Full-text available via subscription   (Followers: 6)
Baltic Journal of Road and Bridge Engineering     Full-text available via subscription   (Followers: 1)
BER : Building and Construction : Full Survey     Full-text available via subscription   (Followers: 10)
BER : Building Contractors' Survey     Full-text available via subscription   (Followers: 4)
BER : Building Sub-Contractors' Survey     Full-text available via subscription   (Followers: 3)
BER : Survey of Business Conditions in Building and Construction : An Executive Summary     Full-text available via subscription   (Followers: 4)
Bioinspired Materials     Open Access   (Followers: 5)
Bridge Structures : Assessment, Design and Construction     Hybrid Journal   (Followers: 15)
Building and Environment     Hybrid Journal   (Followers: 15)
Building Women     Full-text available via subscription  
Built Environment Project and Asset Management     Hybrid Journal   (Followers: 15)
Bulletin of Pridniprovsk State Academy of Civil Engineering and Architecture     Open Access   (Followers: 6)
Canadian Journal of Civil Engineering     Hybrid Journal   (Followers: 12)
Case Studies in Engineering Failure Analysis     Open Access   (Followers: 8)
Case Studies in Nondestructive Testing and Evaluation     Open Access   (Followers: 11)
Case Studies in Structural Engineering     Open Access   (Followers: 9)
Cement and Concrete Composites     Hybrid Journal   (Followers: 17)
Challenge Journal of Concrete Research Letters     Open Access   (Followers: 2)
Challenge Journal of Structural Mechanics     Open Access   (Followers: 5)
Change Over Time     Full-text available via subscription   (Followers: 2)
Civil and Environmental Engineering     Open Access   (Followers: 7)
Civil And Environmental Engineering Reports     Open Access   (Followers: 5)
Civil and Environmental Research     Open Access   (Followers: 19)
Civil Engineering = Siviele Ingenieurswese     Full-text available via subscription   (Followers: 4)
Civil Engineering and Architecture     Open Access   (Followers: 17)
Civil Engineering and Environmental Systems     Hybrid Journal   (Followers: 3)
Civil Engineering and Technology     Open Access   (Followers: 10)
Civil Engineering Dimension     Open Access   (Followers: 8)
Cohesion and Structure     Full-text available via subscription   (Followers: 2)
Composite Structures     Hybrid Journal   (Followers: 266)
Computer-aided Civil and Infrastructure Engineering     Hybrid Journal   (Followers: 11)
Computers & Structures     Hybrid Journal   (Followers: 36)
Concrete Research Letters     Open Access   (Followers: 6)
Construction Economics and Building     Open Access   (Followers: 2)
Construction Engineering     Open Access   (Followers: 9)
Construction Management and Economics     Hybrid Journal   (Followers: 22)
Construction Science     Open Access   (Followers: 4)
Constructive Approximation     Hybrid Journal  
Curved and Layered Structures     Open Access   (Followers: 2)
DFI Journal : The Journal of the Deep Foundations Institute     Hybrid Journal   (Followers: 1)
Earthquake Engineering and Structural Dynamics     Hybrid Journal   (Followers: 16)
Enfoque UTE     Open Access   (Followers: 4)
Engineering Project Organization Journal     Hybrid Journal   (Followers: 7)
Engineering Structures     Hybrid Journal   (Followers: 13)
Engineering Structures and Technologies     Hybrid Journal   (Followers: 2)
Engineering, Construction and Architectural Management     Hybrid Journal   (Followers: 14)
Environmental Geotechnics     Hybrid Journal   (Followers: 5)
European Journal of Environmental and Civil Engineering     Hybrid Journal   (Followers: 9)
Fatigue & Fracture of Engineering Materials and Structures     Hybrid Journal   (Followers: 16)
Frattura ed Integrità Strutturale : Fracture and Structural Integrity     Open Access  
Frontiers in Built Environment     Open Access  
Frontiers of Structural and Civil Engineering     Hybrid Journal   (Followers: 6)
Geomaterials     Open Access   (Followers: 4)
Geosystem Engineering     Hybrid Journal   (Followers: 1)
Geotechnik     Hybrid Journal   (Followers: 3)
Géotechnique Letters     Hybrid Journal   (Followers: 6)
HBRC Journal     Open Access   (Followers: 2)
Hormigón y Acero     Full-text available via subscription  
HVAC&R Research     Hybrid Journal  
Indoor and Built Environment     Hybrid Journal   (Followers: 2)
Infrastructure Asset Management     Hybrid Journal   (Followers: 2)
Infrastructures     Open Access  
Ingenio Magno     Open Access   (Followers: 1)
Insight - Non-Destructive Testing and Condition Monitoring     Full-text available via subscription   (Followers: 22)
International Journal for Service Learning in Engineering     Open Access  
International Journal of 3-D Information Modeling     Full-text available via subscription   (Followers: 3)
International Journal of Advanced Structural Engineering     Open Access   (Followers: 16)
International Journal of Civil, Mechanical and Energy Science     Open Access   (Followers: 1)
International Journal of Concrete Structures and Materials     Open Access   (Followers: 14)
International Journal of Condition Monitoring     Full-text available via subscription   (Followers: 2)
International Journal of Construction Engineering and Management     Open Access   (Followers: 9)
International Journal of Geo-Engineering     Open Access   (Followers: 3)
International Journal of Geosynthetics and Ground Engineering     Full-text available via subscription   (Followers: 4)
International Journal of Masonry Research and Innovation     Hybrid Journal   (Followers: 1)
International Journal of Pavement Research and Technology     Open Access   (Followers: 5)
International Journal of Protective Structures     Hybrid Journal   (Followers: 6)
International Journal of Steel Structures     Hybrid Journal   (Followers: 2)
International Journal of Structural Engineering     Hybrid Journal   (Followers: 10)
International Journal of Structural Integrity     Hybrid Journal   (Followers: 2)
International Journal of Structural Stability and Dynamics     Hybrid Journal   (Followers: 7)
International Journal of Sustainable Built Environment     Open Access   (Followers: 4)
International Journal of Sustainable Construction Engineering and Technology     Open Access   (Followers: 8)
International Journal on Pavement Engineering & Asphalt Technology     Open Access   (Followers: 6)
International Journal Sustainable Construction & Design     Open Access  
Journal of Bridge Engineering     Full-text available via subscription   (Followers: 15)
Journal of Building Engineering     Hybrid Journal   (Followers: 1)
Journal of Building Materials and Structures     Open Access   (Followers: 2)
Journal of Building Performance Simulation     Hybrid Journal   (Followers: 6)
Journal of Civil Engineering and Construction Technology     Open Access   (Followers: 12)
Journal of Civil Engineering and Management     Hybrid Journal   (Followers: 7)
Journal of Civil Engineering and Science     Open Access   (Followers: 7)
Journal of Civil Engineering Research     Open Access   (Followers: 6)
Journal of Civil Society     Hybrid Journal   (Followers: 4)
Journal of Civil Structural Health Monitoring     Hybrid Journal   (Followers: 4)
Journal of Composites for Construction     Full-text available via subscription   (Followers: 13)
Journal of Computing in Civil Engineering     Full-text available via subscription   (Followers: 24)
Journal of Construction Engineering     Open Access   (Followers: 7)
Journal of Construction Engineering and Management     Full-text available via subscription   (Followers: 19)
Journal of Constructional Steel Research     Hybrid Journal   (Followers: 8)
Journal of Earth Sciences and Geotechnical Engineering     Open Access   (Followers: 4)
Journal of Fluids and Structures     Hybrid Journal   (Followers: 6)
Journal of Frontiers in Construction Engineering     Open Access   (Followers: 2)
Journal of Green Building     Full-text available via subscription   (Followers: 11)
Journal of Highway and Transportation Research and Development (English Edition)     Full-text available via subscription   (Followers: 13)
Journal of Infrastructure Systems     Full-text available via subscription   (Followers: 21)
Journal of Legal Affairs and Dispute Resolution in Engineering and Construction     Full-text available via subscription   (Followers: 5)
Journal of Marine Science and Engineering     Open Access   (Followers: 1)
Journal of Materials and Engineering Structures     Open Access   (Followers: 5)
Journal of Materials in Civil Engineering     Full-text available via subscription   (Followers: 10)
Journal of Nondestructive Evaluation     Hybrid Journal   (Followers: 11)
Journal of Performance of Constructed Facilities     Full-text available via subscription   (Followers: 4)
Journal of Pipeline Systems Engineering and Practice     Full-text available via subscription   (Followers: 7)
Journal of Rehabilitation in Civil Engineering     Open Access   (Followers: 3)
Journal of Solid Waste Technology and Management     Full-text available via subscription   (Followers: 1)
Journal of Structural Engineering     Full-text available via subscription   (Followers: 40)
Journal of Structural Fire Engineering     Full-text available via subscription   (Followers: 6)
Journal of Sustainable Architecture and Civil Engineering     Open Access   (Followers: 3)
Journal of Sustainable Design and Applied Research in Innovative Engineering of the Built Environment     Open Access   (Followers: 1)
Journal of the Civil Engineering Forum     Open Access  
Journal of the South African Institution of Civil Engineering     Open Access   (Followers: 4)
Jurnal Spektran     Open Access   (Followers: 1)
Jurnal Teknik Sipil dan Perencanaan     Open Access   (Followers: 1)
Konstruksia     Open Access  
KSCE Journal of Civil Engineering     Hybrid Journal   (Followers: 2)
Latin American Journal of Solids and Structures     Open Access   (Followers: 4)
Materiales de Construcción     Open Access  
Mathematical Modelling in Civil Engineering     Open Access   (Followers: 3)
Nondestructive Testing And Evaluation     Hybrid Journal   (Followers: 17)
Obras y Proyectos     Open Access   (Followers: 1)
Open Journal of Civil Engineering     Open Access   (Followers: 7)
Photonics and Nanostructures - Fundamentals and Applications     Hybrid Journal   (Followers: 2)
Practice Periodical on Structural Design and Construction     Full-text available via subscription   (Followers: 4)
Proceedings of the Institution of Civil Engineers - Bridge Engineering     Hybrid Journal   (Followers: 7)
Proceedings of the Institution of Civil Engineers - Civil Engineering     Hybrid Journal   (Followers: 11)
Proceedings of the Institution of Civil Engineers - Management, Procurement and Law     Hybrid Journal   (Followers: 8)
Proceedings of the Institution of Civil Engineers - Municipal Engineer     Hybrid Journal   (Followers: 3)
Proceedings of the Institution of Civil Engineers - Structures and Buildings     Hybrid Journal   (Followers: 4)
Random Structures and Algorithms     Hybrid Journal   (Followers: 5)
Research in Nondestructive Evaluation     Hybrid Journal   (Followers: 7)
Revista IBRACON de Estruturas e Materiais     Open Access   (Followers: 1)
Road Materials and Pavement Design     Hybrid Journal   (Followers: 10)
Russian Journal of Nondestructive Testing     Hybrid Journal   (Followers: 6)
Science and Engineering of Composite Materials     Hybrid Journal   (Followers: 61)
Selected Scientific Papers - Journal of Civil Engineering     Open Access   (Followers: 3)
Slovak Journal of Civil Engineering     Open Access   (Followers: 2)
Soils and foundations     Full-text available via subscription   (Followers: 4)
Steel Construction - Design and Research     Hybrid Journal   (Followers: 3)
Structural and Multidisciplinary Optimization     Hybrid Journal   (Followers: 9)
Structural Concrete     Hybrid Journal   (Followers: 11)
Structural Control and Health Monitoring     Hybrid Journal   (Followers: 9)
Structural Engineering International     Full-text available via subscription   (Followers: 11)
Structural Safety     Hybrid Journal   (Followers: 7)
Structural Survey     Hybrid Journal  
Structure     Full-text available via subscription   (Followers: 23)
Structure and Infrastructure Engineering: Maintenance, Management, Life-Cycle Design and Performance     Hybrid Journal   (Followers: 13)
Structures     Hybrid Journal   (Followers: 1)
Study of Civil Engineering and Architecture     Open Access   (Followers: 8)
Superlattices and Microstructures     Hybrid Journal   (Followers: 2)
Surface Innovations     Hybrid Journal  
Technical Report Civil and Architectural Engineering     Open Access  
Teknik     Open Access  
The IES Journal Part A: Civil & Structural Engineering     Hybrid Journal   (Followers: 6)
The Structural Design of Tall and Special Buildings     Hybrid Journal   (Followers: 6)
Thin Films and Nanostructures     Full-text available via subscription   (Followers: 2)
Thin-Walled Structures     Hybrid Journal   (Followers: 4)
Transactions of the VŠB - Technical University of Ostrava. Construction Series     Open Access   (Followers: 1)
Transportation Geotechnics     Full-text available via subscription   (Followers: 1)
Transportation Infrastructure Geotechnology     Hybrid Journal   (Followers: 8)
Underground Space     Open Access  
Water Science & Technology     Partially Free   (Followers: 25)
Water Science and Technology : Water Supply     Partially Free   (Followers: 22)

           

Journal Cover Civil and Environmental Research
  [19 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Print) 2224-5790 - ISSN (Online) 2225-0514
   Published by IISTE Homepage  [37 journals]
  • The Effect of Perceived Work Environment on Government Employees’
           Motivation at Assosa Zone, Benishangul Gumuz Region, Ethiopia

    • Authors: Aragaw Demissie Moges
      Abstract: The purpose of this study is to examine the effect of perceived work environment on employees motivation at Assosa Zone,Benishangul Gumuz Region, Ethiopia. The study encompasses all employees working in the thirty offices of Assosa Zona in zonal and wereda level. From work environment indicators physical work environment and psychosocial work environment was selected and their effect on employees motivation is checked. In order to test whether these variables determine the employees motivation, multiple regressions was employed which is feasible model when there is more than one independent variable. Lastly, it was found that all factors are most predicting in the employees motivation. All alternative hypotheses are accepted. Keywords: Employees’ motivation, Physical work environment, psychosocial work environment  
      Issue No: Vol. 9
       
  • Assesment on Urban Density and Land Use Efficiency in the Ethiopian Cities

    • Authors: Abaynew Wudu Belete
      Abstract: “Density” which refers to urban space has become an area of discussion among different scholars in urban design and town planning and among policymakers in urban development. Some advocates for the compact city (higher density) development and others to spread-out. However, the objective of this study is not evaluating the arguments of pro-density and spread out developments. The study aimed to assess and investigate to what extent Ethiopian cities are dense based on national urban development policy, acceptable global standards' Identify major challenges hindering density of development and strategies devised to solve the problem, assess land use intensity among core area, intermediate zone, and peripheral zone and identify the reason behind and suggest some policy recommendations which supports compact developments. The research approach applied in this study is a mixed approach (quantitative and qualitative) and both primary and secondary data had been collected and analyzed. Spatially, Ethiopian cities are growing in a low-density pattern as compared to global standards supposed to developing countries and national contexts (housing as well as population density). For this, a range of different factors is considered. Housing typology, land delivery system for development purpose, and deficiency in enabling environment (water supply, sewerage system, road network) and the lack of the policy directions and density standards which indicate where.....what level of density and how it can be achieved, presence of significant proportion of vacant or underused land in core areas by government institutions as well as individuals are contributed for the existence of low-density developments. There is no fit all strategies about density; therefore, to achieve a planned and healthy density, private sector and individual developer must stimulate and regulated through market and planning instruments. To do so, a comprehensive land use and density framework and planning capacity is important. Keywords: Assessment, built-up area, core area, density, intermediate zone, land use intensity, population
      Issue No: Vol. 9
       
  • Effect of Recycling Waste Glass as Fine and Coarse Aggregate on Same
           Properties of Concrete

    • Authors: Jasim Jarallah Fahad AL- Kaabi
      Abstract: This research aims to study the possibility of reuse of glass waste as a partial replacement in the first two cases, instead of fine aggregates and weight ratios (5%, 10%, 15%, and 20%) percent, in the second case a partial replacement of the coarse aggregates and the same proportions of the previous weight. The results showed that increasing the content of these wastes replaced by sand Resulted in a decrease in density and an increase in compressive strength at 28 days(16%,18%,27%,22%) respectively. The increase in splitting strength was 28 days (17%, 18.4%, 24.8%, 18%) respectively. The decrease in density was (1.5%,3%,4.4%,6%)respectively. The greatest effect was the compressive strength and splitting strength at 15% the replacement ratio. The results showed that increasing the content of these wastes replaced by gravel Resulted in a decrease in density and an increase in compressive strength at 28 days(12%,14%,16%,11%) respectively. The increase in splitting strength was 28 days (8.4%, 10.4%, 12%,8%) respectively. The decrease in density was(2.8%,4%,5.2%,6.4%)respectively. The greatest effect was the compressive strength and splitting strength at 15% the replacement ratio. The experimental results obtained from the modeling test showed that substituting the sand gave a higher density than replacing the gravel as well as compressive resistance and exhalation higher than gravel replacement.
      Issue No: Vol. 9
       
  • Environmental Water Related Deterioration of Compressed Stabilized Earth
           Block Structures in Uganda

    • Authors: Anthony G Kerali, Ronald Ekyalimpa
      Abstract: The provision of shelter for all has not yet been realised. The main challenge is the high cost of building materials. Compressed and stabilised earth blocks (CSEB) are now recognised as low cost materials. While their green properties are well understood, the durability of these materials remain enigmatic. The objective of this research was to investigate the durability of CSEBs as used in the humid tropics. The interplay between the block and the effects of natural exposure conditions, especially the dynamics of rainfall, are examined. Through a methodology involving literature reviews, physical inspections, and exposure condition survey, block behaviour and defects over time are rigorously investigated. Water deterioration modes and their mechanisms of progression are discussed. The sources of water, agents, actions, effects, affected properties, and rate of deterioration are described. Defects were exhibited mainly as surface erosion, and cracking. However, it is still possible to improve the durability and wear resistance of CSEBs for use in the humid tropics. The improvement is achieved via lowered water absorption, and improved design codes, tests and standards. The findings are likely to contribute to the future widespread use of CSEBs. The findings raise a number of questions for further studies. Keywords: Compressed Earth Blocks, Deterioration, Durability, Rainfall, Soil-Cement, Stabilization, Water
      Issue No: Vol. 9
       
  • Analysis of Adoption of Improved Cookstoves by Households in Kaduna North
           Local Government Area, Kaduna State Nigeria

    • Authors: Samaila Alhassan Sati, Hindatu Abdullahi Maikano
      Abstract: The level of fuel wood consumption in traditional cook stoves is on the increase due to the cost and unreliability in the supply and availability of modern forms of energy. This study focused on the adoption of improved cook stoves in Kaduna North Local Government Area. Data were collected from four sampling units (Kawo, Badarawa, Hayin banki, and Unguwar shanu) using field observation and questionnaire survey. The data collected were analyzed using t-test and the Point Biserial Correlation. Results obtained revealed a significant relationship between education levels attained and type of cook stove used. Majority of the respondents with low income (< 18,000 naira) were found to use fuel wood. A significant relationship existed between house hold size and type of cook stove used, where households with numbers greater than 4 used fuel wood in the study area. Significant difference in the amount of fuel wood consumed by improved and traditional cook stoves was observed using t-test, where traditional cook stove consumes much more fuel wood than the improved cook stove. Most respondents preferred traditional cook stoves and open fires over improved based on beliefs and culture. Awareness level about the improved cook stove was very poor. The use of improved cook stoves from this study has shown a strong relationship between its adoption and educational status, income level, household size, cultural beliefs, as well as level of awareness. Hence, there is need for enlightenment on the advantages of improved cook stoves and dangers associated with fuel wood/open fire use. Keywords: Fuel wood, Cook stoves, Kaduna, Traditional, Energy
      Issue No: Vol. 9
       
  • Impact of Environmental Disclosure on Performance of Cement and Brewery
           Companies in Nigeria

    • Authors: Ahmad A. Abubakar, Simon Moses, Mohammad Bala Inuwa
      Abstract: This research empirically assessed the impact of environmental disclosure on performance of listed cement and breweries companies in Nigeria. The population of the study consists of nine cement andbreweries companies listed on the Nigerian stock exchange. Three listed cement and four breweries companies were selected as a sample for this study. Secondary data were used and were collected from annual reports of selected companies for the period of five years from 2011 – 2015. Ordinary Least Square regression technique was employed to analyze the data. Content analysis was used for measuring quantitative environmental disclosure and unweigted approach was used to rank environmental disclosure indices for measuring qualitative voluntary environmental disclosure. Return on Asset (ROA), Return on Equity (ROE), and Earning per Share (EPS) were used as proxies for measuring performance. The empirical result indicates that environmental disclosure quantitative (EDQN) has a positive insignificant on ROA and EPS at 0.707 and 0.616 respectively, it has negative insignificant impact on ROE at 0.756. On the other hand, environmental disclosure qualitative (EDQL) has positive significant impact on ROAat0.025 also with EPS at 0.00, it however has positive insignificant impact on ROA at 0.660. and is statistically significant, also negative impact on ROE and EPS and is insignificant. . The control variable firm size (FRMS) has positive significant impact on EPS at 0.009.  The study recommends that cement tand breweries companies should practice how to disclose more environmental information. Government should also come up with clearly define policy on environmental disclosure issues and should ensure its full implementation. Keywords: Environmental disclosure, firm performance, mandatory disclosure, voluntary disclosure.
      Issue No: Vol. 9
       
  • Nightclubs and Restaurant Bars Noise Pollution: A Case Study of Melville
           Community, Johannesburg

    • Authors: Tebogo Patience Mahapa, Wellington Siziba, Shadung J. Moja
      Abstract: The majority of South Africans live in communities that are somewhat exposed to noise pollution. Noise has the capability to cause conflict between those who are generating it and those who are victims of it. People do tolerate noise to a certain extent, but when noise becomes a nuisance it infringes other people’s rights and that can lead to irritation and frustration. The purpose of this study was to investigate the occurrence of environmental noise pollution emanating from nightclubs and restaurant bars on the community of Melville, Johannesburg. A quantitative research method was followed using a calibrated Sound Level Meter to measure noise at 10 different measuring points. The noise measurements were randomly sampled within the study area on weekends and public holidays during the day from 10h00 to 14h30 and at night from 22h00 to 02h30.
      Issue No: Vol. 9
       
  • Torsional Behavior of Hybrid Reinforced Concrete Box Girders Composed of
           Conventional Concrete and Modified Reactive Powder Concrete

    • Authors: Aamer Najim Abbas, Ahmed Mahdi Jassim
      Abstract: This paper investigates experimentally the torsional behavior of hybrid reinforced concrete box beams composed of conventional concrete at side walls and modified reactive powder concrete at top and bottom flanges. Hybrid reinforced concrete members is used extensively to deal with the members strength requirements related to flexural, shear and torsion in structural systems. The torsion failure is an undesirable failure because it's occurred in a brittle nature, it is necessary to avoid this type of failure in the earthquake areas. Three reinforced concrete box beams with dimensions (300x300x1200) mm of (width x height x length) respectively and interior hollow dimensions (140x140)mm were cast and tested to failure by using two opposite cantilevers arms which contribute in transferring the torque to the central part of the box beam. One of the beams was poured with conventional concrete, second beam with modified reactive powder concrete and third beam was poured as a hybrid member. Experimental data on ultimate capacity, cracking torsional loads, failure pattern and twisting angle for each of the box beams were gained. The experimental results show that the ultimate torsional strength value of hybrid box beam higher than conventional concrete beam by about (58) % and lower than modified reactive powder concrete specimen by about (40.75)%. Keywords: Hybrid reinforced concrete, conventional concrete, modified reactive powder concrete and torsion.
      Issue No: Vol. 9
       
  • Effect of Toxic Compounds Extracted from Microalgae Oscillatoria limosa
           (Roth) Agardh on the Fertility of White Male Mice Mus musculus L.

    • Authors: Faris S. Kata, Ahmed M. Athbi, Ban A. Esmaeel
      Abstract: The effect of toxic compounds extracted from cyanobacteria Oscillatoria limosa isolated from Abu-Alkaseeb rivers in the southern Iraq was studied, water samples  were collected from rivers, and cultured in chu-10 medium .Supernatant of toxic extract from biomass was extracted and  test its effects on the fertility of male mice .The present study reveal   that di(2-ethyl hexyl) phthalate and phytol compounds effected on the fertility of male mice based on the sperm count ,sperm abnormalities and testosterone hormone level. The current study concluded that the toxic compounds extracted of Oscillatoria limosa had a positive effect on fertility of Mus musculus these effects represented in increasing in abnormal sperms, decreasing of sperm count and testosterone hormone levels compared with control group. Keywards: oscillatoria limosa, sperm count, testosterone hormone.
      Issue No: Vol. 9
       
  • Frequency and Risk Factors for the Occurrence of Work Related
           

    • Authors: James Kinuthia Waithaka, Peterson N. Warutere, Pius Makhonge, Richard Korir
      Abstract: Work-related musculoskeletal disorders describe a wide range of inflammatory and degenerative disorders and diseases such as metacarpal syndrome, tenosynovitis, tendonitis, fasciitis, epicondilytis, shoulder impingement syndrome among others, resulting in pain and functional impairment. The main objective of this study was to determine the frequency and risk factors for the occurrence of work related muscular disorders among slaughter house workers in Nairobi County. The study adopted a cross sectional descriptive design. Cluster sampling was used to select a sample of 155 workers from the selected slaughter houses within Nairobi County. Oral interviews, questionnaires and observational methods were used to collect both qualitative and quantitative which was analysed using SPSS version 20. Data was analysed using chi square test for association. The study results showed that majority of the workers (82.4% n=128) experienced pain in one or more parts of the body. Frequency of neck pain stood at 15% (19), wrist and hand pain at 29.6% (38), shoulder pain at 51% (65), hips and thigh pain at 2% (3). Risk factors were identified as lack of breaks during working hours, working for long hours, working posture and change of duty after sick off. There is a high prevalence of work related musculoskeletal pain associated with development of musculoskeletal disorders among slaughter house workers in Nairobi County. The slaughter houses management should restrict the number of working hours to 8 hours in any working day. Key words: Risk Factors, Occurrence, prevalence, Nairobi County, pain, slaughter house, MSDs
      Issue No: Vol. 9
       
 
 
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