14 research outputs found

    PARADOXICAL REACTIONS, ESPECIALLY PSORIASIS IN RHEUMATOLOGY PATIENTS RECEIVING BIOLOGIC THERAPY FROM THE TREASURE DATABASE: A 5-YEAR FOLLOW-UP STUDY

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    EULAR European Congress of Rheumatology (EULAR) -- JUN 01-04, 2022 -- Copenhagen, DENMARK[Abstract Not Available]European Alliance Assoc Rheumato

    Pollution evaluation of heavy metals in sediments from the Çakit Stream, Ulukişla (Niğde), Turkey

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    16th International Multidisciplinary Scientific GeoConference: Science and Technologies in Geology, Exploration and Mining, SGEM 2016 -- 30 June 2016 through 6 July 2016 -- -- 124231The aim of this study is to investigate the sediments in Çakıt Stream and headwaters, which originate Bolkar Mountains and flow through Central Tauride belt to Mediterranean Sea. Samples were characterized by multivariate statistical analysis to determine the enrichment characteristics of heavy metals as well as their potential risks of pollution. Results showed that the average concentrations of some heavy metals comply with the concentration ranges recommended by the National Standard of Turkey, while the maximum concentrations of Pb, Zn, Ag, Sb and As exceeded these standards. Results from multivariate statistical analysis indicated that Cu, Ni, Cr, and Co originated from natural geological background, while Pb, Zn, Ag, As and Cd in the sediments created from anthropogenic in origin. On the other hand, enrichment factor analysis and the geo-accumulation index evaluation showed that Pb, Zn, As and Pb were existing in the sediments of the river at low or restricted serious pollution, while Cr, Ni, Cu and Co occurred at low pollution levels. © SGEM2016

    Hydrochemical and isotopic studies to understand quality problems in groundwater of the Niğde Province, Central Turkey

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    This study seeks to decipher the hydrochemistry, recharge sources, and the possible factors controlling the chemistry of groundwater in Niğde Province of central Turkey. This was done by conducting hydrochemical, multivariate statistical, and stable isotope analysis on 37 well and spring water samples collected in the wet and dry seasons of 2016. The major ion abundance in the groundwater is in the order Ca2+ > Na+ > Mg2+ > K+ and HCO3- > SO42- > Cl-. This accounted for the dominance of Ca–SO4–HCO3 water type with other mixed water types, reflecting the geology of the area, which is predominated by carbonate lithologies. All the physico-chemical parameters generally comply with the WHO and Turkish national guideline values for drinking water except TDS, Ca2+, SO42-, NO3-, and As. The elevated amounts of TDS, SO42-, and NO3- were largely from anthropogenic sources. The studied well and spring water samples are suitable for irrigation purposes in terms of their sodium hazard, but with regard to salinity hazard, the well water samples are not suitable for irrigation purposes due to their high salinity values. Three factors that explain 85.2% of the total variance of the data point to water–rock interaction and mixing with thermal waters as the principal factors controlling the chemistry of the groundwater. Metal pollution load was significantly higher in the wet season than in the dry season with arsenic as the key contaminant (0.69–391.14 µg/L and 0.29–43.6 µg/L in the wet and dry seasons, respectively). The tritium concentrations reveal that the well waters have longer residence time and water–rock interaction than the spring waters and are thus recharged from older groundwater sources. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature

    Mineralogical and chemical changes in parent rocks and in soil ecosystems (Mazmili DagI, Adana, Turkey)

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    7th International Scientific Conference on Modern Management of Mine Producing, Geology and Environmental Protection, SGEM 2007 -- 11 June 2007 through 15 June 2007 -- Albena -- 101475In this study, the region of Aladaglar-Mazmi{dotless}li{dotless} (Adana) has been selected as research area and covering on area of 95 square kilometers. A number of anatical methods including Attarberg, XRD, XRF and ICP have been employed to characterize representative samples collected from the soils developed partially weathered country rocks with respect to their chemical and mineralogical contents. Soil horizons did not well developed on the limesstone and ultramafic parent roks that include mainly harzburgite-dunite, ophyolite melange due to rapid weatering and steep topography. However, soil zones well-developed, forming terra-rosa over ohiolite melange and its debris. Clay species belonging to smectite, kaolinite, and mixed-layer groupes have been formed during pedogenesis. Clay contents and abundances vary depending on the morphology. Although the limestone and harzburgite - dunite dont contain quartz, the soils developed on them comprised significant amounts of quartz. Mazmi{dotless}li{dotless} area soils did not develop homogeneausly, they are rather inhomogeneous. MgO and CaO contents show depletion upward, whereas, the other major element oxides including, as Al2O3, Fe2O3, SiO2 and MnO increase. These soils are slightly basic and enriched in K2O, and Na2O. Heavy immobile elements such as Zr and Ti show strongly parent rock-controled distributions. A total of three soil profile has been investigated in this research. Chemical analysis indicated that the major and trace element chemistry of all three show good agreement with the world soil standards. Only difference noticed was anomalous chromium and nickel values due to the host rock chemistry

    Biogeochemical exploration for massive sulphide deposits in areas of dense vegetation: an orientation survey around the Kankoy Deposit (Trabzon, NE Turkey)

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    WOS: 000077365800003The eastern Pontides region is a mountainous terrain favourable for massive sulphide deposits. Besides the known deposits, it is highly likely that there are others to be discovered. This paper, therefore, describes the results of a soil and biogeochemical sampling program to assess the suitability of biogeochemical methods for the exploration of hidden deposits in temperate terrains. Soil sampling in the Pontides is shown to be a reliable follow-up method. It produced a significant geochemical response characterised by extensive Cu and Zn but localised Pb anomalies. Lead therefore is the element which can be used to pinpoint the mineralisation due to its relatively less mobile character. Hydromorphic dispersion enhanced the anomalies indicating that base of slope samples would produce reliable results. Of the plant species sampled, Corylus avellana (hazelnut tree) with deep penetrating roots shows comparable results to soil sampling and could be used to delineate the mineralisation. Rhododendron luteum may also be of help. In both species Pb shows limited dispersion and accumulates in the plants near the mineralised site whereas Cu and Zn tend to move away downslope. This shows that biogeochemical sampling could, with proper attention to species selection, be successfully used as an alternative method in the search of massive sulphide deposits in mountainous terrains with a high rainfall such as the eastern Pontides. (C) 1998 Elsevier Science B.V. All rights reserved

    New evidence concerning to the Nigde fault in the near east and south of the settlement area of the Nigde, central Anatolia, Turkey

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    17th International Multidisciplinary Scientific Geoconference, SGEM 2017 --29 June 2017 through 5 July 2017 -- --130787The main purpose of this paper is to investigate of the Niğde Fault zone, which passes through the city of Niğde. The study area located in the south and eastern part of the Niğde Province, and crops out different types of geological units from Paleozoic to Cenozoic in that vicinity. These units are, from old to young, metamorphic rocks, which is known as Niğde Massif composed of Gümüşler, Kaleboynu, Aşıgediği formations, Üçkapılı granodiorite (Paleozoic to Mesozoic), Kızılkaya Ignimbrite (Upper Miocene to Pliocene), Karataş Volcanites (Middle Pleistocene), Quaternary fluvial sediments, talus and alluvium. The tectonics, basin development, volcanism and geomorphology of the Central Anatolia are largely under the control of three dominant faults. These are the NW-SE trending and strike slip Tuzgölü Fault, NNE to SSW trending and left lateral strike-slip Ecemiş Fault and NE to SW trending dip slip Niğde Fault. In order to obtain concrete geological information related to this fault, electric resistivity and self-potential (SP) measurements made 50 m interval on two profile, which was out the fault line vertically. SP and Electrical resistivity measurements made in 76 points along the first profile, 49 points along the second profile where located at SW and NE of the Niğde, separately. High Electrical resistivity and SP values were recorded at 10, 40, 45 points in the first profile and 11, 27 and 47 points in the second profile. These points are evaluated as an important finding of the existence of discontinuities of the Niğde Fault Zone, which is covered by young sediments. It is understood from the Electrical resistivity and SP data that the Niğde Fault Zone consisting of at least three segments (S1, S2, S3). The distance from the segment (S1), which is located in the South, to the NW margin of the Nigde Massif varies from 750 to 2500 m. These segments are parallel to each other extend in NE-SW direction. The NW edge of the massif is the fault scarp, which was retrograde towards to SE direction, in the Middle Miocene-Early Pliocene time. The presence of thick talus on the NW side of this fault zone supports this idea. © SGEM2017. All Rights Reserved.Ömer Halisdemir Üniversitesi --This study was supported as part of the Project No FEB 2011/15-BAGEP by Ömer Halisdemir University, Scientific Research Projects Department. -

    Sustainable Water Management and Rehabilitation in the Mining Lakes, Ilgin-Konya, Turkey

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    16th International Symposium on Environmental Issues and Waste Management in Energy and Mineral Production (SWEMP) / International Symposium on Computer Applications (CAMI) -- OCT 05-07, 2016 -- Istanbul, TURKEYWOS: 000391287200024The processes during the search, production and enrichment of mining operations naturally affects the air, soil, water resources in turn the natural environment and living organisms. In general, the environmental impact of coal opencast mining operations is much more significant than that of underground mining and mineral processing. After stripping of the material filling the holes in coal opencast production, with the rise of surface water and ground water level is composed of large or small ponds. Low pH (acidic characteristic) and high metal concentrations (Al, Ca, Mn, Fe, Cu, Zn, Pb) of these ponds, containing sulfide minerals and the waste materials, for the sustainability of natural resources is one of the biggest environmental problems. This paper is to investigate geochemical characteristics of the pond waters in the Ilgm Coal deposit area. Geochemical analyses were made by ICP-MS in waters taken from ponds in each three-month periods. Highest heavy metal contents 1839 ppb Mn and 9777 ppb Fe, the average pH values 6.49-7.81, turbidity (NTU) 0.1263.6, sulphate content 0.05-2.67 mg SO4/L, chemical oxygen demand 4-136 mg O-2/L, and electrical conductivity 285 mu S/cm4.68 mS/cm have been measured during the monitoring study of five different lignite opencast mine post-production lakes of the TKI GLI Ilgm. Analyses were performed in three-month periods. The results were evaluated within the framework of relevant laws and regulations.Istanbul Univ, AGRO AGRE, Univ Laval, CineR, TENCATE, Mining Turkey, S African Inst Mining & Metallurgy, MEi, Turkish Airline

    Spatial distribution and trace element geochemistry of laterites in Kunche area: Implication for gold exploration targets in NW, Ghana

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    Kunche area is located in NW Ghana within the Wa-Lawra greenstone Birimian belt and is composed mainly of volcaniclastics, metasediments and some intrusive granitoids. The area is covered with laterites making it difficult to identify exploration targets. In this study, we describe a new methodology based on statistical tools and trace element geochemistry to map the pathfinder elements of gold deposits in lateritic context. However, the results of this study are specific to a particular context and cannot be extrapolated without supplementary studies to all the lateritic areas. In this respect, a total of 67 lateritic samples were collected from residually weathered materials and their spatial distribution was determined by means of the GIS-based kriging interpolation method. The samples collected vary from detrital to residual laterites/duricrusts and are hosted in volcaniclastic rocks. ICP-MS and XRF techniques were used to determine the element concentrations of the samples. The trace element geochemical data were analyzed using bivariate and multivariate geostatistical analysis to establish relationships among elements. Fe-oxides such as goethite and hematite and clay minerals like kaolinite are the main secondary minerals of the concretionary reddish lateritic samples. All the analyzed elements showed asymmetrical distribution rather than normal distribution. Spearman correlation shows that Cu, Pb, S, As, and Ag have moderate to strong positive correlation with Au. From the multivariate geostatistical analysis, three element associations; a) Fe, Pb, S, Co, Cr; b) Ni, Y, Rb, Sr, Zn, and c) Ca, Cu, Mn, Ti, Zr, As, Au, Ag were observed. Threshold values of selected elements were determined using the median absolute deviation (MAD) method, which indicates possible anomalous concentrations in the laterites for Pb (?48 ppm), Cu (?46 ppm), As (?134.2 ppm), and Ag (?0.42 ppm). Multi-element mapping indicates that Pb + Cu + As + Ag is the most ideal association in the exploration of gold deposits. It reveals ellipsoidal anomalies comparable to the Au distribution map that suggest dispersion and accumulation of the pathfinder elements in the area. The geochemical anomalies are mainly restricted to the environment of the residual laterites in the Kunche area and we recommend that exploration programs should be focused in such areas. © 2019 Elsevier LtdUniversity of Electronic Science and Technology of ChinaAzumah Resources Limited, Ghana is acknowledged for the support during the period of this research. Special thanks goes to Assoc. Prof. Emmanuel ARHIN at the University for Development Studies, Ghana for his useful comments. The first author thanks TÜBİTAK, BIDEB 2215 Graduate Scholarship Program for International Students for the continuous support as a doctoral research fellow in Turkey. The second author also acknowledges the support from the Graduate Scholarship Program for International Students of the University of Electronic Science and Technology of China . The Editor-in-Chief (Dr. Damien Delvaux), Dr. David Baratoux and other anonymous reviewers are greatly acknowledged for their useful comments that improved the quality of the paper. Appendix

    THE EFFECTS OF CHEMICAL AND ORGANIC FERTILIZER APPLICATIONS ON FORAGE YIELD AND QUALITY OF SMOOTH BROME (BROMUS INERMIS L.) UNDER IRRIGATED AND NON-IRRIGATED CONDITIONS

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    The aim of this research is to examine the effects of chemical and organic fertilizer applications on the forage yield and quality of smooth brome. The research was conducted in two separate experiments under irrigated and non-irrigated conditions in a randomized complete blocks design with three replications Ammonium sulphate was used as chemical fertilizer, manure and poultry manure as organic fertilizer and Vicia sativa L as green manure. Under irrigated and non-irrigated conditions, the impacts of different fertilizer applications on the smooth brome's height of plant, crude protein rate, crude protein yield, green grass yield and dry matter yield were evaluated. According to the results of the research, while the average dry matter yield was obtained to be 3.94 t ha(-1) under irrigated conditions, it was obtained as 1.70 t ha(-1 )under non-irrigated conditions. The peak values under irrigated conditions were obtained from chemical fertilizer application. However, under non-irrigated conditions the highest values were obtained from organic fertilizer applications. Consequently, considering the impacts of using organic fertilizers on the ecological properties of the soil in the long term, it was concluded that the yield difference between chemical fertilizer and organic fertilizer under irrigated conditions was at tolerable level
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