September 2011
Routing in wireless sensor network based on soft computing technique
Wireless sensor networks consist of a large number of sensor nodes having limited power. The most important feature of these networks is the presence of dynamic topology which will lead to the mobility of the nodes. This mobility requires a routing capable of adapting to these changes. Despite the power restriction in these networks, the purpose in routing algorithm is not to find the shortest route; rather it is the...
September 2011
Probabilistic stability analysis of Naien water transporting tunnel and selection of support system using TOPSIS approach
Tunnel stability analysis is a geotechnical engineering problem characterized by many sources of uncertainty. In such cases, rock and soil characteristics could not be defined by deterministic values and probabilistic technique would be as a suitable alternative. Naien water transporting tunnel is a circular tunnel with 6 m in diameter which is being excavated in such conditions and it is almost impossible to analyze...
September 2011
Mechanical properties of interlaminer Kevlar29 and Al2O3 powder/epoxy composite plates using an analytical approach
In this study, the behaviour of laminated composite plates, fiber Kevlar29, Al2O3powder/epoxy and the suggested analytical solution for static analysis of composite plates were presented using general classical laminated plate theory. The Navier solutions are limited to simply support rectangular plates using static analysis. The results show that the effect of the deflections and stresses on the plate...
September 2011
The effects of phosphoric acid and pyrolysis temperature to the formation of flaky graphite from lignite
The flaky graphites were prepared from lignite. The effects of phosphoric acid ratios and pyrolysis temperatures on flake formation were studied by SEM, TEM and XRD. The results showed that the flaky graphite occurred at a pyrolysis temperature of 600°C with a 1.0:1.0 ratio of carbon to phosphoric acid. The flaky formation was almost completed by pyrolysis at 800°C and with a 1:2.0 ratio of carbon to phosphoric...
September 2011
Meteorological drought analysis using artificial neural networks
Droughts may be classified as meteorological, hydrological or agricultural. When meteorological drought appears in a region, agricultural and hydrological droughts follow. In this study, the standardized precipitation index (SPI) was applied for meteorological drought analysis at five stations located around the Lakes District, Turkey. Analyses were performed on 3-, 6-, 9- and 12-month-long data sets. The SPI drought...
September 2011
The interdependence of electronic energy, period of time, mass and internuclear distance displayed by any object, Part 2: Molecular derivation and application to chemically alike molecules
This study, based on mere considerations induced by the Special Theory of Relativity, has previously established the following relationship between the “minimum electronic energy” , and the related “classical vibration frequency” , in regards to electronic states of a given diatomic molecule: . Where is the reduced mass of the molecule, the “internuclear...
September 2011
Usability of sand-bentonite-cement mixture in the construction of unpermeable layer
The aim of this study is to prepare a mix that can be used in impermeable fill as an alternative to clay which can sometimes be difficult to find. In the study, bentonite and cement were chosen as admixtures and sand was chosen as the main material. The main reason for choosing bentonite and cement as admixtures is that they are impermeable and easy to find. Sand was chosen as the main material in the experiments to...
September 2011
Abdominal pain: The black box. Retrospective evaluation of patients administered to the emergency department due to complicated lymphocyt
Lymphocyst is mainly observed following extraperitoneal surgery. In this retrospective study, we aimed to determine the results of patients treated with percutaneous catheter drainage who referred to the emergency department due to lymphocyst complications. The examined group was consisted of 17 patients. All patients admitted to the emergency were suffering from abdominal pain. Ultrasonography (USG) was performed to...
September 2011
Productivity analysis of an electronics re-manufacturing system through stochastic Petri nets and artificial neural networks
This paper provides Petri net (PN) modeling and performance analysis of a surface mount device (SMD) electronics manufacturing assembly line for an automated remanufacturing of printed circuit boards. Concentrating on the operational aspects, PN models for an automated assembly stations were constructed. These models enable designers to have a better understanding of the system control and analysis from the graphical...
September 2011
Physicochemical properties of chemically modified starches from different botanical origin
Starches from various botanical origins (rice, maize and potato starches) were cross-linked in the presence of epichlorohydrin (EPI), respectively. Then, the cross-linked starches were further oxidized with sodium hypochlorite (NaOCl, 2.5% w/w) to obtain oxidized cross-linked starches (OCS). The chemically modified methods on the physicochemical properties of different starches were investigated. It was found that...
September 2011
Neuroendocrine regulatory role of Merkel cells in the pathogenesis of psoriasis
It has been confirmed that neuroendocrine regulation involves in the pathogenesis of psoriasis, but the association between neuroendocrine and skin immune is still unknown. The present study aimed to explore the relationship of Merkel cells in the skin lesions and the pathogenesis of psoriasis. The ultrastructure of Merkel cells was observed under an electron microscope and immunohistochemistry was performed to detect...
September 2011
Injection moulding temperature and powder loading influence to the metal injection moulding (MIM) green compact
The influence of temperature and powder loading on the Metal Injection Moulding (MIM) green compact is presented. The feedstock used is a mixture of stainless steel (SS316L) powder and a composite binder system consisting of polyethylene glycol (PEG) and polymethyl methacrylate (PMMA). The bi-modal particle size distribution powder has a composition of 30 and 70% by weight of fine and coarse SS316L powder respectively...
September 2011
Acid treatment of platelets for removal of class I human leukocyte antigen (HLA) antigens
Acid elution of platelets class I human leukocyte antigen (HLA) antigens is considered as a strategy for production of HLA-eluted platelets for clinical use. In this study, we investigated the effects of acid treatment for the removal of class I HLA antigens on platelet activation, apoptosis and aggregation, and to evaluate the optimal elution condition and the feasibility of clinical application of the acid-elution...
September 2011
Study on differences between Chinese and Western sciences and their causes
Science constitutes the theoretical foundation of technological innovation. And science develops on the basis of specific philosophical thoughts and cultural gene. The differences between Chinese and western philosophies and cultures determine the differences of their sciences. Some inspirations are offered based on profound analysis of the differences and the root cause of the development of Chinese and Western...
September 2011
Engineering properties of Turkish travertines
The usage of Turkish travertines is becoming increasingly popular as a natural building and facing stone in construction and engineering sector all over the world. Chemical, physical and mechanical properties of travertine play an important role on deciding their application area as a construction stone. In this study, the travertine samples were obtained from 15 different provinces and 23 different quarries in the...
September 2011
Prediction of subgrade resilient modulus for flexible pavement design
Resilient modulus of subgrade soils is an important input in mechanistic pavement design. The primary objective of this work is to investigate the resilient modulus of four typical Victorian fine-grained subgrade soils under traffic-like repeated loading and to suggest empirical predictive models incorporating physical properties and/or strength of the soils along with the stress state. A repeated load...
September 2011
Strengthening of reinforced concrete (RC) beams with prefabricated reinforced concrete (RC) plates
Reinforced concrete (RC) beams which are insufficient in terms of shear and flexural capacities are strengthened by various methods. Steel and fibre reinforced polymer (FRP) plate bonding methods are very widely used in strengthening of beams. Strengthening methods such as bonding steel and FRP plates have deficiencies as corrosion, fire and buckling. In this work, it is aimed strengthening of damaged RC beams using...
September 2011
Hybrid strategies of enumeration in constraint solving
Enumeration strategies (that is, selection of a variable and a value of its domain) are crucial components of Constraint Programming: they significantly influence the performances of the solving process, sometimes of several orders of magnitude. In this paper, we propose to use Local Search in order to help and guide enumeration: we extend the usual variable selection strategies of constraint programming and we perform...
September 2011
Effects of water and salt stresses on germination and seedling growth in two durum wheat (Triticum durum Desf.) genotypes
To evaluate durum wheat (Triticum durum Desf.) tolerance to osmotic stress at the water potential levels induced by polyethylene glycol 6000 and NaCl solutions at an early stage of plant growth. Each, on germination and early seedling stages, were investigated for two durum wheat genotypes differing in drought tolerance (boefi and leucurum) at laboratory, in Iran in 2010. This investigation was performed as...
September 2011
Nutritional status in school children: Deficiencies in iron, folic acid and Vitamin B12
This study was conducted to assess deficiencies in iron, folic acid and Vitamin B12as well as nutritional status in a sample of school-age children in Turkey. The study was conducted on 172 children (boys: 80; girls: 92) aged 6 to 13 years from two different primary schools in the capital city of Turkey, Ankara. Data were obtained on children anthropometry, 24 dietary recalls, hematological and biochemical parameters of...
September 2011
A thermosolar nursery for tilapia (Oreochromis niloticus L.)
A thermosolar nursery development for rural producers was built and tested in three different operational conditions. The system consisted of a solar collector connected to a coiled heat exchanger inside a fish culture tank. A pump activated by two thermostats was used to circulate water throughout the heating circuit. A short-term pilot test was performed to probe the maximum heating of the system. Two more tests...
September 2011
A case study about the experimental works on the production of repair mortars to be used in the restoration of Anemas Dungeons
In this paper, the experimental studies conducted to produce repair mortars with local materials for the restoration of Anemas Dungeons located in Ayvansaray-Halic site of Istanbul Land Walls were explained and the results were evaluated. Before these studies, characterization studies of original mortar samples collected from the structure were conducted in detail, then the repair mortar samples were produced in...
September 2011
Role of time-density curve of ct enhancement in combination with pathological examination in the diagnose of lung cancer
The study aimed to investigate the relationship between the expressions of cyclooxygenase-2 (COX-2), vascular endothelial growth factor (VEGF), microvessel density (MVD) and the appearances on enhanced CT scan in lung cancer patients. Findings on dynamic CT scan were evaluated respectively in 35 patients without lung cancer (control) and 25 lung cancer patients receiving chemotherapy or radiotherapy followed by complete...
September 2011
Gastrojejunocolic fistula after gastroenterostomy with Billroth II reconstruction for duodenal ulcer: Report of a case
Gastrojejunocolic fistula is a late, rare and severe complication of gastroenterostomy with Billroth II reconstruction for peptic ulcer and is associated with inadequate gastric resection and incomplete vagotomy. The fistula is thought to be due to perforation of a marginal ulcer into the transverse colon. In the past, attempted primary repair had high mortality and staged operations were normally performed. We herein...
September 2011
Computer aided analysis of phase to ground fault for generators operated in parallel with networks
Maximum and minimum short circuit currents must be calculated before installing an electric system. The maximum short-circuit current corresponds to a short-circuit in the immediate vicinity of the downstream terminals of the protection device. It must be calculated accurately and used within a safety margin. A minimum short-circuit current is essential when selecting a time-current curve for the circuit breakers and...
September 2011
Assessment effect of granulocyte colony-stimulating factor in experimental models of liver injury
Previous investigators have suggested that granulocyte colony-stimulating factor (G-CSF) may accelerate the healing process of liver lesions. This hypothesis has been discussed by some researchers. The action mechanisms remains unclear and further studies are needed to clarify this mechanism. To test this, we establish a rat model of liver injury using dimethylnitrosamine (DMN), transplanted the G-CSF into the rats. To...
September 2011
Bibliographic and citation analysis of publications from a Thai Research Institute with a defined lifespan: The Institute of Molecular Biology and Genetics, 1999 to 2009
This study sought to explore the research output of a single research institute in Thailand with a defined life span (1999 to 2009) and to assess the impact of this research through the use of citation analysis. A total of 228 primary research articles met the inclusion criteria (indexed primary research publication) with a combined total of 1696 published pages. Average article length was 7.43 pages. The average impact...
September 2011
A decision support model to incorporate public and expert opinions for assessing the privatization of public bus transit system: Application of ELECTRE for the bus system in Eskisehir, Turkey
This paper proposes a multicriteria model for assessing public bus operation systems based on the ELECTRE method in the city of Eskisehir, Turkey. In this specific problem, public and expert opinions towards the privatization of urban bus lines were collected through a comprehensive survey to determine the best operation system; either by the local authority or private operators. The data collected include the opinions...
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