Ahi Evran University

About: Ahi Evran University is a education organization based out in Kırşehir, Turkey. It is known for research contribution in the topics: Density functional theory & Ab initio. The organization has 842 authors who have published 2270 publications receiving 21904 citations.

POPULATION STRUCTURE AND GROWTH OF RUDD Scardinius erythrophthalmus (L., 1758) FROM A EUTROPHIC LAKE IN NORTHERN ANATOLIA

Abstract: A total of 1329 samples were collected from monthly sampling between November 2009 and October 2010 in order to analyze growth features and population structure of rudd Scardinius erythrophthalmus living in Lake Ladik which has eutrophic character. The fork length (FL) ranged from 9.8 to 21.4 cm and the body weight (W) ranged from 13.62 to 200.68 g. Based on lapillus readings, the maximum age was 7 years. The overall ratio of female to male was 1:0.16. The von Bertalanffy growth equation parameters were calculated as L∞ = 39.32 cm, W∞ = 1504.92 g, k = 0.08, t0 = -1.08 for females, and L∞ = 28.19 cm, W∞ = 448.03 g, k = 0.13, t0 = -1.19 for males. Length-weight relationship for females and males was found as W = 0.0060 FL3.386 and W = 0.0078 FL3.282, respectively. The Fulton’s condition factor (K) showed an upward trend with reference to age and length groups in both sex. The value of mean K was computed as 1.737 for females, 1.667 for males and 1.727 for combined sexes. This study provides the initial data on population structure, growth features and condition of rudd in Lake Ladik. Obtained data have shown that population is comprised of young individuals and that the growth rate of the species is slow.

Environmental Exposures in the Etiology of Abortion: Placental Toxic and Trace Element Levels.

Abstract: Purpose Intensive research has been conducted on the effects of toxic and trace elements on pregnancy. Previous studies indicated a possible relationship between placental levels of these elements and first-trimester abortion; however, their effects on the further gestational weeks are not clear. This study aimed to investigate the effect of changes in the levels of placental trace and toxic elements on second-trimester abortion. Methods The patient group consisted of 30 women with missed abortion. The control group comprised 60 healthy term and singleton pregnant women who gave birth. Placental samples were obtained from the patients and the healthy controls, and the concentrations of placental elements were measured using inductively coupled plasma mass spectrometry. Results In the abortion group, placental arsenic, cadmium, mercury, lead, antimony, tin, cobalt, manganese, and selenium levels were significantly higher than those of the control group (p<0.05). Antimony was determined as an independent predictor with an odds ratio of 6.1 in toxic elements (p=0.025), and selenium was determined as an independent predictor with an odds ratio of 2.3 in trace elements (p=0.015). Conclusion The changes in trace element and toxic element levels, especially an increase in antimony and selenium, in placental tissue due to environmental exposure may play an important role in second-trimester abortion.

Homothetic Motions and Surfaces in E^{4}

Abstract: In this paper, we determine a surface \(M\) by means of homothetic motion in \( \mathbb {R}^{4}\) and reparametrize this surface \(M\) with bicomplex numbers. Also, by using curves and surfaces which are obtained by homothetic motion, we give some special subgroups of the Lie group \(P\).

Anaphylaxis due to spontaneous rupture of primary isolated splenic hydatid cyst

Abstract: Echinococcosis is a helminthic zoonosis mainly caused by Echinococcus granulosus and commonly encountered in endemic areas. The liver and lung are the most frequently involved organs. A primary isolated hydatid cyst of spleen is an extremely rare disease even in endemic areas. Anaphylactic reaction is a known complication of cystic hydatid disease, a parasitic infestation caused by the larval/cyst stage of E. granulosus that usually occurs after trauma or during interventions. To the best of our knowledge, anaphylaxis with spontaneous rupture of primary isolated splenic hydatidoses had not been reported previously. The main purpose of this report is to highlight life-threatening complications such as anaphylactic shock that should be considered due to primary isolated splenic cyst hydatid rupture in especially endemic regions.