Assessment of subjective sleep quality in iron deficiency anaemia

Objectives: We aimed to assess the effect of anemia on subjective sleep quality in patients with iron deficiency anemia (IDA).Methods: One hundred and four patients diagnosed with IDA and 80 healthy individuals, who are gender and age matched, were included in the study. All participants were requested to fill 3 forms: a socio-demographic form (age, gender, marital status, income level and educational status), hospital anxiety and depression (HAD) scale and pittsburgh sleep quality index (PSQI).Results: According to the HAD scale, the average anxiety score was found 9.24±4.37 in patients and 7.58± 4.07 in controls. And, the average depression score was 7.53±4.10 in patients and 6.41±2.74 in controls. The total sleep quality score was 6.71±3.02 in patients and 4.11±1.64 in controls. There was a statistically significant difference in terms of anxiety, depression and sleep quality scores. Linear regression analysis showed no association between anxiety and depression with poor sleeping.Conclusion: IDA affects sleep quality irrespective of psychological symptoms such as depression and anxiety.Keywords: Iron deficiency anemia, sleep quality, anxiet

Ground motion data profile of western Turkey with intelligent hybrid processing

The recent earthquakes caused severe damages on the existing buildings. By this motivation, an important amount of research work has been conducted to determine the seismic risk of seismically active regions. For an accurate seismic risk assessment, processing of ground motions would provide an advantage. Using the current technology, it is not possible to precisely predict the future earthquakes. Therefore, most of the current seismic risk assessment methodologies are based on statistical evaluation by using recurrence and magnitude of the earthquakes hit the specified region. Because of the limited number of records on earthquakes, the quality of definitions is questionable. Fuzzy logic algorithm can be used to improve the quality of the definition. In the present study, ground motion data profile of western Turkey is defined using an intelligent hybrid processing. The approach is given in a practical way for an easier and faster calculation. Earthquake data between 1970 and 1999 from western part of Turkey have been used for training. The results are tested and validated with the earthquake data between 2000 and 2015 of the same region. Enough approximation was validated between calculated values and the earthquake data by using the intelligent hybrid processing

Comparison of critical column buckling load in regression, fuzzy logic and ANN based estimations

In structural stability analyses, determining the critical buckling load is a crucial issue. Regression, fuzzy logic and Artificial Neural Network (ANN) algorithms can be used to determine critical buckling loads. This study compares the results of different approaches for column buckling load prediction. Regression, Fuzzy logic and ANN algorithms were employed in the analyses, representing material properties to take uncertainties into account and the results were compared. The results show that uncertainties play an important role in stability analyses and should be considered in the design. The elastic modulus results predicted by regression, fuzzy logic and ANN are also compared to those obtained using empirical results of the buildings codes and various models. These comparisons show that obtained results in the present study give closer results than the different design codes. Therefore, proposed models can be used for critical buckling loads and regression, fuzzy logic and ANN have strong potential as a feasible tool for estimating column buckling loads within the range of input parameters considered

Effect of thulium substitution on conductivity and dielectric belongings of nanospinel cobalt ferrite

The CoTmxFe2-xO4(x <= 0.1) NPs were synthesized sonochemically. X-ray powder diffraction patterns and TEM images of the samples prove their chemical purity and cubic structure-morphology, respectively. Some substitution ratio of thulium ions to cobalt ferrites have an important effect on the characteristic evaluation of both electrical and dielectric characteristic measured at frequencies up to 3.0 MHz between room temperature and 120 degrees C. Since the thulium substitution has a very strong effect on the characteristic evaluation of both electrical and dielectric properties of cobalt-ferrite samples, four substitutional ranges none, small, medium and high were determined for the interpretation of contribution of thulium ratio to ac/dc conductivity, dielectric constant, dielectric loss and tangent loss. Conductivity increases with the incremental frequencies, in general depending on a variety of tendencies of both temperature and substitutional Tm ratios while the activation energy varies with a high dependency to the regional level of Tm substitution in Co-ferrites NPs. The Arrhenius graph appears to provide us with a single activation energy much higher than 400 meV for x = 0.02, which can be attributed to electron hopping mechanisms, apart from other substituted spinel ferrites. (C) 2020 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved

Investigation of AC susceptibility, dielectric and electrical properties of Tb-Tm co-substituted M-type Sr hexaferrites

Structural, magnetic, and dielectric features of Tm-Tb ions co-substituted Sr hexaferrites (HFs) contrived via citrate sol-gel approach were investigated. Rietveld analysis of XRD patterns proved the existence of the hexagonal ferrite structure. The size and morphology were examined by XRD, SEM, and TEM techniques. The electrical and dielectric belong to Tm-Tb co-substituted Sr-HFs were extensively explored with temperature, frequency, and substitution ratio using the complex impedance spectroscopy technique. It was found that Tm-Tb substitution has a strong influence on the dielectric loss, dielectric constant, ac/dc conductivity and dissipation factor. It was observed that activation energy levels can be changed to a certain level with co-substitution ratio. Measurements of magnetization against temperature M(T) and AC magnetic susceptibility were also performed. The investigation of M(T) experiments showed ferrimagnetic behavior between 10 and 325 K and a super-spin glass-like demeanor was found at very low temperatures. Vogel-Fulcher, Neel-Arrhenius and critical slowing down models were considered to explain the AC susceptibility results. The examination of AC susceptibility disclosed a strengthening of magnetic exchange interactions with Tb3+ and Tm3+ substitutions