12 research outputs found

    Farklı türden yeni baskın konveks fonksiyonlar için Hermite-Hadamard tipli eşitsizlikler

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    Bu makalede, birkaç yeni baskın fonksiyon sunulmuştur. Ayrıca, bazı yeni Hadamard tipli eşitsizlikler elde edilmiştir.In this paper, several new convex dominated functions are established. Also, some new Hadamard type inequalities are obtained

    Estimation of environmental impacts on the water quality of İncesu-Dokuzpınar Springs in Kayseri, Turkey

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    Industrial and agricultural activities have directly or indirectly affected the concentrations of a large number of inorganic chemicals in groundwater, for example NO3, N2, Cl, SO4, H+, K, Mg, Ca, Fe, Cu, B, Pb and Zn, as well as a wide variety of pesticides and other organic compounds. For reactive contaminants like NO3, it is recommended that a combination of hydrochernical and environmental-tracer analytical approaches might be required to resolve changing inputs from subsequent alterations as causes of concentration gradients in groundwater. The water type of Incesu-Dokuzpinar Springs is mainly Na-MgCa-Cl-HCO3. Note that the water types of the Springs were directly related to the hydrogeochemical properties of outcrops at the study area. Thus, the high concentration of Ca+2 and HCO3 is mainly related to the high CO2 contents in the marbles, whereas the high Na concentration arises from the existing syenite, volcanic ash, basalt and clay units, although the ·Incesu-Dokuzpinar Springs cover most of the drinking and irrigation water demands at the study area. Therefore, relevant hydrogeochemical and statistical studies were carried out for estimating the mentioned environmental impacts on the water quality of ·Incesu-Dokuzpinar Springs. © Springer-Verlag 2004

    Determining rates of erosion of an earth pillar by terrestrial laser scanning

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    WOS: 000282439500012This paper will show how a three-dimensional (3D) terrestrial laser scanning system can be used to assess the erosion of a sample earth pillar located in Selime in the Cappadocia region of central Turkey. These pillars are known locally as 'Fairy Chimneys'; they are a wonder of both the natural and cultural worlds and have importance from historical perspectives. Sixty million years ago, the region was formed from soft layers of lava and ash spewed out by the Erciyes, Hasan, and Gullu mountains. The landscape was then abraded by rain and wind over the years and the earth pillars were formed from the tuff. Due to atmospheric effects the pillars are undergoing chemical and physical deterioration. In order to conserve the earth pillars, an understanding of the deterioration phenomenon of the tuff is essential. In the last years, three-dimensional (3D) terrestrial laser scanning systems have been very successfully employed in many engineering applications. The high quantity and precision of the measured points enable the user to generate realistic and 3D illustrations of complex objects. The sample earth pillar in Selime was modeled in 3D by terrestrial laser scanning three times during two six-month periods with an average of 10 mm horizontal and vertical intervals on the surface. The volume differences were computed from the same volume surface for each period and these differences determined whether erosion had taken place. At the end of the study, it was detected that there was partial erosion on this earth pillar resulting from physical intervention.Turkish Institution of Scientific and Technologic Research (TUBITAK); [106M057]This study was supported by the Turkish Institution of Scientific and Technologic Research (TUBITAK) and was conducted within the scope of Research Project No. 106M057 entitled "Employing Three Dimensional Modeling, Detecting the Changes Occurring in Natural Site Area Within Cappadocia (Selime-Aksaray) Region". The authors would like to thank the General Directory of Meteorology in Turkey for the meteorological data

    Influences of human activities and agriculture on groundwater quality of Kayseri-Incesu-Dokuzpinar springs, central Anatolian part of Turkey

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    Human activities and agriculture have had direct and indirect effects on the rates of contamination of groundwater in the Incesu-Dokuzpinar spring area. Direct effects include dissolution and transport of excess quantities of fertilizers with associated materials and hydrological alterations related to irrigation and drainage. Indirect effects may include changes in water-rock reactions in soils and aquifers caused by increased concentrations of dissolved oxidants, protons, and major ions. Agricultural activities have directly or indirectly affected the concentrations of a large number of inorganic chemicals in groundwater, for example NO3, N2, Cl, SO42, H+, K, Mg, Ca, Fe, Cu, B, Pb, and Zn, as well as a wide variety of pesticides and other organic compounds. For reactive contaminants like NO3, it is recommended that a combination of hydrochemical and environmental-tracer analytical approaches might be required to resolve changing inputs from subsequent alterations as causes of concentration gradients in groundwater. The water type of Dokuzpinar springs is mainly Na-Mg-Ca-Cl-HCO3. Note that the water types of the springs were directly related to the hydrogeochemical properties of outcrops at the study area. Thus, the high concentration of Ca2+ and HCO3 is mainly related to the high CO2 contents in the marbles, whereas the high Na concentration arises from the existing syenite, volcanic ash, basalt, and clay units, although the İncesu-Dokuzpinar springs cover most of the drinking and irrigation water demands of this area. The high concentrations of NO3 and NaCl show that the area around the springs is continuously being contaminated by untreated sewage and agricultural wastes, especially during dry periods. Therefore, this approach is based on the vulnerability studies of the catchment area, determination of the transfer time of the pollutant, and the water-bearing formations of İncesu-Dokuzpinar springs. Vulnerability in this study is defined as the intrinsic hydrogeochemical characteristics of an aquifer, which may show the sensitivity of groundwater to be contaminated by different human activities
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