Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2768

Table of Content: 4 November 2010; 5(21)

November 2010

Modeling of state highway pavement maintenance work

  A highway network is valuable for the society it serves, and should be maintained so as to keep this value at an optimum level. This study was performed to contribute to the planning of highway pavement maintenance work, associated with the Pavement Management System application in Turkish State Highways. In this study, pavement performance was modeled, taking into consideration traffic loads, environmental...

Author(s): Sukriye Iyinam, Murat Ergun and A. Faik Iyinam

November 2010

A short review on the surficial impacts of underground mining

  Subsidence in terrains is one of the most serious geological hazards because they can effect slopes and damage engineering structures, settlement areas, natural lakes, and allow infiltration of contaminant into the groundwater. Causes of underground mining activities such as subsidence, slope deformation, etc. are very important problems in most countries and these types of impacts are very well known in...

Author(s): AyÅŸen OkÅŸan Altun, IÅŸik Yilmaz and Mustafa Yildirim

November 2010

Digital mining applications in distance education environments

  It is seen that distance education environments are more frequently used due to the progress of internet today. The data acquired from these environments are commonly irregular journal records and text-based communication messages. Digital mining applications are used in order to convert these irregular data into regular, and cleaning out the information stacks. The purpose of this research is to reveal the...

Author(s): Tuncay Sevindik and Necmi Demirkeser

November 2010

Bioremediation of polluted wastewater influent: Phosphorus and nitrogen removal

  The world is faced with problems related to the management of wastewater due to extensive industrialization, increasing population density and a highly urbanized society. The quality of wastewater effluents is responsible for the degradation of receiving water bodies, such as lakes, rivers, streams. In order to meet Goal 7 of the Millennium Development Goals “ensure environmental sustainability”...

Author(s): Akpor O. B. and Muchie M.

November 2010

Predictors of retention in methadone maintenance therapy: A prospective multi-center study

  In the methadone maintenance therapy (MMT) as the treatment of choice in opiate dependency, retention is considered as a target. Given the paucity of data regarding factors affecting retention in MMT in Iran, we sought to determine the predictors of duration of retention. This multi-center prospective study was conducted at 7 outpatient treatment facilities in 4 cities in Iran, in 2007. 282 consecutive opiate...

Author(s): Peymaneh Shirinbayan, Hassan Rafiey, Afshin Vejdani Roshan, Hooman Narenjiha and Ali Farhoudian

November 2010

Evaluation of irrigation and drainage systems of (Southeastern Anatolia Project) GAP, the Turkey’s largest integrated water resource development project

  The Southeastern Anatolia Project (GAP), the Turkey’s largest integrated water resource project, is among the world’s most important regional development projects in terms of numeric size and influence. In the present study, irrigation systems and drainage requirements within the scope of GAP in the Euphrates and Tigris Basins are investigated. With the data collected, an attempt was made to...

Author(s): Kasim Yenigun and Mustafa Hakki Aydogdu

November 2010

Using the features of mosaic image and AES cryptosystem to implement an extremely high rate and high secure data hidden: Analytical study

  Mosaic image approaches have been successfully proposed to solve different problems in the image processing such as image segmentation. As it becomes a well known art, there are thousands of mosaic images available in the internet galleries. In addition, there is quite a big number of free mosaic creation software available in the markets. In this paper we will study the features of the mosaic images which...

Author(s):   Gazi Mahabubul Alam, M. L. Mat Kiah, B. B. Zaidan, A. A. Zaidan and Hamdan O. Alanazi,

November 2010

Effects of mycorrhiza on the growth of Forsythia x intermedia Zab. plants under different climate and in various growing medium

  The aim of this study is to investigate the difference between the growth of plants with and without mycorrhiza in vegetation studies that will be conducted in arid regions. In order to determine the effects of mycorrhiza, Forsythia x intermedia plant was chosen because of its wide usage in Landscape Architecture application studies due to its esthetic and functional properties and because of its...

Author(s): Muberra Pulatkan, Mustafa Var and Emrah Yalcinalp

November 2010

Laparoscopic surgery of ovarian tumors in children: Report of 4 cases and literature review

  In this study, we evaluated the feasibility and curative effects of laparoscopic surgery of ovarian benign tumors in children. The clinical data of four children with ovarian tumors who underwent laparoscopic surgery in the Second People’s Hospital of Shenzhen from January, 2008 to February, 2010 were retrospectively reviewed. Among these 4 children, laparoscopic ovarian cystectomy was performed in 3...

Author(s): Jin Aihong, Zhou Xiaping, Zhou Fengzhen and Luo Lu

November 2010

Wall traverse with GPSSIT and 3D positioning of urban details

  In an urban environment, sometimes surveying becomes a very hard task, especially measuring some certain points or details on the ground that are surrounded by obstacles such as trees, fences or buildings. On the other hand, in such areas, survey points installed as references on the ground can easily be lost because of city activities. Wall traverse supported by GPSSIT (GPS Sanal Istasyon Teknigi –...

Author(s): Ozsen Corumluoglu

November 2010

Effects of day length and daminozide on the flowering, some quality parameters and chlorophyll content of Chrysanthemum morifolium Ramat

  This study was conducted to determine the effects of different day lengths and daminozide on days to flower, some quality parameters and chlorophyll contents of spray chrysanthemum plants (Chrysanthemum morifolium cvs. 'Yellow Reagan' and 'White Reagan') grown under greenhouse conditions. Day length and daminozide significantly affected days to flower, stem length, stem diameter and...

Author(s): Soner Kazaz, M. Atilla Askin, Semra Kilic and Nilda Ersoy

November 2010

Evaluation of the risk of coal workers pneumoconiosis (CWP): A case study for the Turkish hardcoal mining

  Occupational lung diseases such as coal workers pneumoconiosis coal workers pneumoconiosis (CWP) in mines are attributed to many factors. In this study, an attempt has been made to estimate the risk of pneumoconiosis for miners, accounting for their individual and workplace characteristics in Turkish hardcoal mines. Logistic regression modeling is used to assess the association between risk factor and...

Author(s): H. Aydin

November 2010

Control of Rabinovich chaotic system based on passive control

  This paper discusses the control of three-dimensional continuous Rabinovich attractor by using passive control technique. Based on the property of the passive system, the passive controller is designed and this controller is added to chaotic Rabinovich system for achieving the control of the system. The controller is ensured to the global asymptotical stability of the three dimensional Rabinovich chaotic...

Author(s): Selçuk EmiroÄŸlu and Yilmaz UyaroÄŸlu

November 2010

An experimental study for settlement of strip foundation on Geogrid-Reinforced sand

  In this study, design factors affecting the settlement of strip foundation on geogrid-reinforced sand were investigated experimentally. The experiments were carried out according to Taguchi’s 5 parameter, 4 level, and standard L16 orthogonal arrays. Signal-to-noise (S/N) and variance analysis are used to determine the levels of the factors affecting the bearing capacity. It was determined that the most...

Author(s): Atila Demiröz and Özcan Tan

November 2010

Reinforced pavement above trench under urban traffic load: Case study and finite element (FE) analysis

  Every year, 2000 km length of trench is being excavated through an existing pavement in Iran for installing urban waste water pipelines. Many a times, these trenches are not filled back properly resulting in large permanent settlement in the pavement constructed above the trench. Geogrids have been used at the top of the base course to decrease the settlement. This article presents the observed settlements of...

Author(s): Sina Kazemian, Maassoumeh Barghchi, Arun Prasad, Hossein Maydi and Bujang B. K. Huat

November 2010

A back-propagation artificial neural network approach for three-dimensional coordinate transformation

  The European Datum 1950 (ED50) of the Turkish national geodetic network (TNGN) and the World Geodetic System 1984 (WGS84) of the Turkish national fundamental GPS network (TNFGN) are in use as geodetic reference frames in Turkey.  According to the use of two reference systems, it is necessary to transform the three-dimensional (3D) coordinate data from ED50 to WGS84 or vice versa. The seven-parameter...

Author(s): Bayram Turgut

November 2010

Assessing the experimental behaviour of load bearing masonry walls subjected to out-of-plane loading

  An important factor to consider is the resistance of load bearing masonry walls subjected to out-of-plane loading during an earthquake. In addition to in-plane forces, earthquake accelerations produce out-of-plane forces which may cause the wall to fail under flexure, very similar to a reinforced concrete slab, loaded perpendicular to its plane. Four wall specimens were tested under out-of-plane hysteretic...

Author(s): Recep Kanit, Mürsel Erdal and Ömer Can

November 2010

The effects of different soil tillage methods on soil water dynamic

  Water is an important factor effecting plant growth especially under dry farmingconditions. Therefore, different factors, such as mulch, organic matter, polymer and different soil tillage application, to decrease the water loss from soil was extensively studied. Among these practices, methods of soil tillage is important, because its effects may vary from region to region. In this study, different...

Author(s): Metin Mujdeci, Burhan Kara and Ahmet Ali IÅŸiIdar