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1.
Sibel Yılmaz Şerife Tokalıoğlu Serkan Şahan Ahmet Ülgen Ahmet Şahan Cengiz Soykan 《Journal of trace elements in medicine and biology》2013,27(2):85-90
An on-line flow injection pre-concentration-flame atomic absorption spectrometry method was developed to determine trace zinc in water (tap, dam, and well water), biological (hair and nail), and liver samples. As a solid phase extractant, a synthesized new chelating resin, poly(2-thiozylmethacrylamide-co-divinylbenzene-co-2-acrylamido-2-methyl-1-propane sulfonic acid) was used. The resin was characterized by Fourier transform infrared spectroscopy, elemental analysis, and surface area by nitrogen sorption. A pre-concentration factor of 40-fold for a sample volume of 12.6 mL was obtained by using the time-based technique. The detection limit for the pre-concentration method was found to be 2.2 μg L?1. The precision (as RSD,%) for 10 replicate determinations at the 0.04 μg mL?1 Zn concentration was 1.2%. The calibration graph using the pre-concentration system for zinc was linear with a correlation coefficient of 0.998 in the concentration range from 0.005 to 0.05 μg mL?1. The applicability and accuracy of the developed method were estimated by the analysis spiked water, biological, liver samples (83–105%), and also certified reference material TMDA-70 (fortified lake water) and SPS-WW1 Batch 111-Wastewater. The results were in agreement with the certified values. 相似文献
2.
J. Apley S. K. R. Clarke A. P. C. H. Roome S. A. Sandry G. Saygi B. Silk D. C. Warhurst 《BMJ (Clinical research ed.)》1970,1(5696):596-599
Meningoencephalitis proved to be due to an amoeba (Naegleria) has been diagnosed in Great Britain for the first time. The first patient (a boy of 2) survived longer than any previously recorded cases, but in spite of early diagnosis and treatment he died 15 days after the onset of meningeal symptoms.Two other children who were exposed to the same possible source of infection (a warm, muddy puddle) had similar symptoms and developed mild meningitis. A naegleria was isolated from the cerebrospinal fluid of one of them. Both recovered after treatment with amphotericin. 相似文献
3.
Can Alkan Pinar Kavak Mehmet Somel Omer Gokcumen Serkan Ugurlu Ceren Saygi Elif Dal Kuyas Bugra Tunga Güng?r S Cenk Sahinalp Nesrin ?z?ren Cemalettin Bekpen 《BMC genomics》2014,15(1)
Background
Turkey is a crossroads of major population movements throughout history and has been a hotspot of cultural interactions. Several studies have investigated the complex population history of Turkey through a limited set of genetic markers. However, to date, there have been no studies to assess the genetic variation at the whole genome level using whole genome sequencing. Here, we present whole genome sequences of 16 Turkish individuals resequenced at high coverage (32 × -48×).Results
We show that the genetic variation of the contemporary Turkish population clusters with South European populations, as expected, but also shows signatures of relatively recent contribution from ancestral East Asian populations. In addition, we document a significant enrichment of non-synonymous private alleles, consistent with recent observations in European populations. A number of variants associated with skin color and total cholesterol levels show frequency differentiation between the Turkish populations and European populations. Furthermore, we have analyzed the 17q21.31 inversion polymorphism region (MAPT locus) and found increased allele frequency of 31.25% for H1/H2 inversion polymorphism when compared to European populations that show about 25% of allele frequency.Conclusion
This study provides the first map of common genetic variation from 16 western Asian individuals and thus helps fill an important geographical gap in analyzing natural human variation and human migration. Our data will help develop population-specific experimental designs for studies investigating disease associations and demographic history in Turkey.Electronic supplementary material
The online version of this article (doi:10.1186/1471-2164-15-963) contains supplementary material, which is available to authorized users. 相似文献4.
Wastewater from olive oil mill was decolorized (and its chemical oxygen demand reduced in static cultivation) using the fungiCoriolus versicolor, Funalia trogii, Phanerochœte chrysosporium andPleurotus sajor-caju. The effect of cotton stalk on decolorizing and COD removing capability was demonstrated.P. chrysosporium (in 20% medium with cotton stalk) reduced the COD by 48% and color by 58%,F. trogii (in 30% medium with cotton stalk) by 51 and 55%, respectively. 相似文献
5.
Pseudomonas aeruginosa immobilized multiwalled carbon nanotubes as biosorbent for heavy metal ions 总被引:1,自引:0,他引:1
Pseudomonas aeruginosa immobilized multiwalled carbon nanotubes has been used as biosorbent for the solid phase extraction of some heavy metal ions in environmental samples. Cobalt(II), cadmium(II), lead(II), manganese(II), chromium(III) and nickel(II) ions have been selected as analytes for the presented study, due to their important negative and positive roles in human life. In order to investigate quantitative biosorption conditions of the analytes, the influences of pH of the aqueous solution, eluent type, eluent volume, samples volume, etc. were examined. The effects of alkaline, earth alkaline and some transitions metals on the biosorption of analyte ions on P. aeruginosa immobilized multiwalled carbon nanotubes were also investigated. The presented biosorption procedure was applied to the determination of analytes in tomato leaves, bovine liver, boiled wheat, canned fish, black tea, lichen and natural water samples. 相似文献
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7.
Belma Turan Ertan Delilba§i Nejat Dalay §evki Sert Lale Afrasyap Ahmet Sayal 《Biological trace element research》1992,33(1-3):95-102
Selenium, aluminum, cadmium, and magnesium concentrations and gluthathione-peroxidase activities in sera of 35 healthy individuals,
30 renal transplants, and 30 hemodialysis patients were measured. Serum selenium, aluminum, and cadmium concentrations in
both groups of patients were higher than the controls (p<0.001), whereas the serum gluthathione-peroxidase levels were lower (p<0.001). According to our results, it can be concluded that the patients receiving hemodialysis are subjected to more toxic
elements than the transplantation patients. These findings imply that dietary selenium supplement may be suggested in renal
failure for the detoxification of elements, such as cadmium and mercury. The essential trace element selenium takes part not
only in the direct protection of endothelial cells against the accumulation of aggressive oxygen species, but also in the
preventions of the toxic effects of cadmium or in the modulation of the active calcium transport. 相似文献
8.
An ethnobotanical survey was made of the villages of the Ilica District, Erzurum Province, Turkey. The authors interviewed
130 people in 60 villages. The information so obtained was classified according to the use of plants for food, fuel, dye,
and construction materials, as well as for miscellaneous uses. All in all, this study revealed 60 plant taxa that were useful
to the villagers of this district. 相似文献
9.
Ö. Ye§ilada 《World journal of microbiology & biotechnology》1995,11(5):601-602
Crystal Violet was decolourized by Coriolus versicolor, Funalia trogii, Laetiporus sulphureus and Phanerochaete chrysosporium ME446 by 92%, 82%, 86% and 62%, respectively, over 3 days. 相似文献
10.
§ahan Saygi Gönen Deniz Osman Kutsal Nevin Vural 《Biological trace element research》1991,31(3):209-214
Male Wistar rats (n:20), at 5 wk of age, were given cadmium in drinking water (10 mg/L water) for 52 wk; 8 males and 20 female rats, as controls, were given tap water. At the end of 28 and 40 wk, some of the cadmium-treated males and control group male rats were sacrificed for the histopathological examination of testis, kidney, and liver. At the end of 56 wk, histopathological examinations were performed in the same way. Liver, kidney, and testis cadmium levels were also determined by atomic absorption spectrophotometry. All the cadmium-treated male rats showed pathological testicular alterations, and liver and kidney damage after chronic exposure. Cadmium levels were found to be highest in the kidney (1.009 +/- 0.034 microgram/g wet tissue in the infertile group). At the end of the 52-wk period, reproductive capacity of the cadmium-treated rats was investigated and was found to be lost in 39.89% of the animals. 相似文献