The Evaluation of the Dietary Habits Influence on the Microhardness of Gingiva-Coloured Composite and Acrylic Denture Base Materials

Purpose: The study investigated the impact of dietary habits, specifically soda, milk kefir, water kefir, almond milk, and distilled water (control) consumption, on the microhardness of gingiva-coloured composite and acrylic denture bases. Methods: Materials included gingiva-coloured composite (Fusion Universal G1), acrylic (Imicryl), and subdivided Procryla group. Subgroups comprised 15 and 30-minute heat polymerized (Pro15, Pro30), and 1 wt% (Pro1Z) and 3 wt% (Pro3Z) zirconium added groups. Immersed in beverages for 1, 7, and 14 days, pH and microhardness were assessed. SEM examined random samples. Statistical analysis used repeated measures ANOVA, and post hoc tests (p Results: The gingiva-coloured composites displayed noteworthy time-associated microhardness changes (p 0.05). Despite variable pH levels in beverages, no substantial group interaction effects were observed (p > 0.05). Initial microhardness rankings shifted after a 14-day immersion. Conclusions: Gingiva-coloured composite exhibited the highest microhardness pre- and post-immersion, followed by Procryla30 and Imicryl groups. .

An Active Image Forgery Detection Approach Based on Edge Detection

Recently, digital images have become the most used data, thanks tohigh internet speed and high resolution, cheap and easily accessible digitalcameras. We generate, transmit and store millions of images every second.Most of these images are insignificant images containing only personal information.However, in many fields such as banking, finance, public institutions,and educational institutions, the images of many valuable objects like IDcards, photographs, credit cards, and transaction receipts are stored andtransmitted to the digital environment. These images are very significantand must be secured. A valuable image can be maliciously modified by anattacker. The modification of an image is sometimes imperceptible even by theperson who stored the image. In this paper, an active image forgery detectionmethod that encodes and decodes image edge information is proposed. Theproposed method is implemented by designing an interface and applied on atest image which is frequently used in the literature. Various tampering attacksare simulated to test the fidelity of the method. The method not only notifieswhether the image is forged or not but also marks the tampered region ofthe image. Also, the proposed method successfully detected tampered regionsafter geometric attacks, even on self-copy attacks. Also, it didn’t fail on JPEGcompression.

The Relationship between the intolerance of uncertainty and the fear of COVID-19 in patients awaiting kidney transplantation during the pandemic

Objective:This study aims to identify the relationship between the intolerance of uncertainty and the fear of COVID-19 in patients awaiting kidney transplantation during the COVID-19 pandemic.Methods:This descriptive and cross-sectional study was performed with the participation of 355 individuals.The data were collected with a patient information form,the intolerance of uncertainty scale–short form(IUS),and the fear of COVID-19 scale(FCV-19S).Results:The mean IUS–short form score of the participants was 53.03±5.11,and their mean FCV-19S score was 30.62±4.10.A statistically highly significant positive relationship was identified between the FCV-19S and IUS scores of the participants(r:0.850;P<0.001).Conclusion:As the patients’intolerance of uncertainty increased,their fears of COVID-19 also increased.For patients awaiting kidney transplantation during the COVID-19 pandemic,which is full of challenges,to cope with fear and uncertainty,it is recommended that patients are provided with care with a multidisciplinary team approach.

Heat transfer enhancement of finned shell and tube heat exchanger using Fe_(2)O_(3)/water nanofluid

Heat transfer mechanisms and their thermal performances need to be comprehensively studied in order to optimize efficiency and minimize energy losses.Different nanoparticles in the base fluid are investigated to upgrade the thermal performance of heat exchangers.In this numerical study,a finned shell and tube heat exchanger has been designed and different volume concentrations of nanofluid were tested to determine the effect of utilizing nanofluid on heat transfer.Fe_(2)O_(3)/water nanofluids with volume concentration of 1%,1.5% and 2% were utilized as heat transfer fluid in the heat exchanger and the obtained results were compared with pure water.ANSYS Fluent software as a CFD method was employed in order to simulate the mentioned problem.Numerical simulation results indicated the successful utilization of nanofluid in the heat exchanger.Also,increasing the ratio of Fe_(2)O_(3) nanoparticles caused more increment in thermal energy without important pressure drop.Moreover,it was revealed that the highest heat transfer rate enhancement of 19.1% can be obtained by using nanofluid Fe_(2)O_(3)/water with volume fraction of 2%.

Computational Studies on the Ground State Tautomer,Hydrogen Conformations and Vibrational Spectroscopic Analysis of Antitumor Agents:3-Deazauracil and 6-Azauracil

The ground state hydrogen conformations and vibrational analysis of 3-deazauracil(3DAU)and 6-azauracil(6AU)tautomers(4-enol and 2,4-diol forms)have been calculated using ab initio Hartree-Fock(HF)and density functional theory(B3LYP)methods with 6-311++G(d,p)basis set level.The calculations have shown that the most probably preferential tautomer of 3DAU and 6AU are the 4-enol form,which gives best fit to the corresponding experimental data.The ground state conformer of the 2,4-diol form has two O—H bonds which are oriented externally and internally(to the N—H bond).The vibrational analyses of the ground state conformer of each tautomeric form of 3DAU and 6AU were done and their optimized geometry parameters(bond lengths and bond angles)were given.Furthermore,from the correlations values it was concluded that the B3LYP method is superior to the HF method for both the vibrational frequencies and the geometric parameters.

Influence of Electromagnetic Fields on Bone Fracture in Rats: Role of CAPE

Objective To study the effects of radiation emitted by mobile phones on bone strength and caffeic acid phenethyl ester （CAPE） on the changes induced by radiation. Methods Forty-eight Sprague-Dawley rats were divided into five groups. Rats in the control group （first group） were left within the experimental setup for 30 min/day for 28 days without radiation exposure. Nine hundred MHz radiation group was broke down into 2 subgroups （group 1/2）. Both subgroups were exposed to radiation for 28 days （30 min/day）. The next group was also divided into 2 subgroups （group 3/4）. Each was exposed to 1800 MHz of radiation for 28 days （30 mirdday）. The third and fifth groups were also treated with CAPE for 28 days. Treatment groups received ip caffeic acid phenethyl ester （10 ktmol/kg per day） before radiation session. Bone fracture was analyzed. Results Breaking force, bending strength, and total fracture energy decreased in the irradiated groups but increased in the treatment groups. Conclusion Radiation and CAPE can significantly improve bone.

Alternating-current losses in two-layer superconducting cables consisting of second-generation superconductors coated by U-shaped ferromagnetic materials

Alternating-current losses in a two-layer superconducting cable, each layer being composed of 15 closely-spaced rectangular wires made up of second-generation superconductors when the ends of wires are coated by either a non-magnetic or strong ferromagnetic material having a U profile is numerically investigated. Computations are carried out through the finite-element method. The alternating-current losses do not increase significantly if the relative permeability of the coating is increased three orders of magnitude, provided that the current amplitude is less than half of the critical current in a superconducting wire. However, the losses are much higher for ferromagnetic coating if the amplitude of the applied current oscillating at 50 Hz is close to the critical current. The ferromagnetic coating is seen to accumulate the magnetic field lines normally on its surfaces, while the field lines are parallel to the long axes of the wires, leading to more significant flux penetration in the coated regions. This facilitates a uniform low-loss current flow in the uncoated regions of the wires. In contrast, coating with a non-magnetic material gives rise to a considerably smaller current flow in the uncoated regions, whereas the low-loss flow is maintained in the coated regions. Moreover, the current flows in opposite directions in the coated and uncoated regions, where the direction in each region is converse for the two materials.

Environmental control of daily stem radius increment in the montane conifer Cedrus libani

Growth response of conifers is species-specific and depends on site and climate conditions.Studies on daily radial stem growth use different analytical approaches to determine species reactions to environmental conditions.These results contribute to improve forecasts of tree growth under a changing climate.During 2013 and2014,radial stem growth of 33 mature Cedrus libani individuals growing under different climatic conditions in Turkey and Germany was monitored hourly using high precision point dendrometers.Stem radius increments(SRI)were extracted from dendrometer readings.The annual course of SRI showed site-specific patterns with mean daily values ranging between 9.9 and 29.3μm over the growing season.Correlation and principal component analyses indicated that humidity and low temperatures during the growing season favored SRI.Multiple regression analyses demonstrated that precipitation and relative air humidity were the most important factors influencing daily SRI.Climate-growth relationships were further evaluated using the regression tree method.Precipitation was the most significant factor on daily SRI for all sites.The close coupling of SRI to relative air humidity and precipitation underlines the importance of stem water status for radial stem growth of C.libani which is native to regions with summer drought.It further explains the superior growth of C.libani in Germany.

Acoustic beam splitting in a sonic crystal around a directional band gap

Beam splitting upon refraction in a triangular sonic crystal composed of aluminum cylinders in air is experimentally and numerically demonstrated to occur due to finite source size, which facilitates circumvention of a directional band gap. Experiments reveal that two distinct beams emerge at crystal output, in agreement with the numerical results obtained through the finite-element method. Beam splitting occurs at sufficiently-small source sizes comparable to lattice periodicity determined by the spatial gap width in reciprocal space. Split beams propagate in equal amplitude, whereas beam splitting is destructed for oblique incidence above a critical incidence angle.

Modeling habitat suitability and utilization of the last surviving populations of fallow deer(Dama dama Linnaeus,1758)

DüzlerçamıWildlife Reserve Area(WRA)is the last natural habitat of fallow deer(Dama dama)in the world.Fallow deer is native to Turkey,however,its geographical range is currently confined to DüzlerçamıWRA,Antalya.To date,a detailed habitat investigation of fallow deer dis-tribution has not been conducted.This study is vital for the last surviving populations of fallow deer in Turkey.There-fore,we studied the habitat suitability and utilization of fal-low deer in the DüzlerçamıWRA.Vegetation and wildlife inventory was surveyed across a total of 304 sample areas between 2015 and 2017.Plant species were recorded accord-ing to the Braun-Blanquet method and wildlife surveys were based on footprints,feces,and other signs of fallow deer.Classification and regression tree techniques,as well as MAXENT,were used to model vegetation and fallow deer habitat.Topographic position index,terrain ruggedness index,roughness index,elevation,and bedrock formation were also calculated and included in the models.Based on our results,we drafted a habitat protection map for fallow deer.To ensure sustainability of habitats where populations of fallow deer are found in Turkey,we developed recommen-dations such as closuring human access of the 1st-degree Protection Area and reintroduction of the species to other potential habitats.

Modelling the site index of Pinus pinaster plantations in Turkey using ecological variables

The determination of site productivity in forest ecosystems plays a crucial role in resource management.This study was carried out to identify relationships between site characteristics and height growth of Corsican maritime pine(Pinus pinaster Ait.)plantations in Turkey.Sixty-nine sample plots>20 years of age were selected from locations with different inclinations,aspects,elevations,slope positions and site class.Soil samples were taken at various depths.Height and age were measured on a dominant tree after felling in each plot.Physical and chemical properties of the soil were determined.Relationships between site index(SI 25)and physiographic factors,climatic attributes as well as soil properties were evaluated using correlation analysis and multiple regression analysis.Site index was significantly related with annual precipitation,mean spring rainfall,rainfall June to September,rainfall of the driest month,length of the dry period,mean maximum temperature,mean temperature of the warmest month,stoniness of the soil,sand,silt,clay,pH,electrical conductivity,and available water capacity.Multiple regression accounted for 57.9%of variations in height growth.The models obtained can be used to determine the site index of potential areas in Turkey for maritime pine.It can be said that the productivity of maritime pine may decline in the future due to global climate change.

Experimental investigation of effect of refrigerant gases,compressor lubricant and operating conditions on performance of a heat pump

In the field of heat pumps,there are a number of parameters that affect the performance and efficiency of the apparatus,which have been the subject of studies by individual researchers in the literature.This study describes an experimental method in order to investigate the effects of some significant parameters on heat pump performance.In this regard,a laboratory heat pump setup has been utilized to operate in different working conditions for achieving an appropriate estimation to find out effects of mentioned parameters such as refrigerant type and charge amount,compressor oil viscosity,compressor cooling fan,secondary fluids temperature and flow rate.Different refrigerants have been selected and used as circulating fluid in the installed heat pump.Although this work has been devoted to a detailed attempt to recognize the effects of various parameters on the coefficient of performance(COP) value,an appropriate method has been carried out to survey the obtained results by using economic analysis.It was revealed that one of the main parameters is refrigerant charge amount which has a notable effect on COP.The temperature of the heat source was also tested and the performance of the system increased by more than 11% by employing mentioned modifications and various operating conditions.In addition,by selecting a low viscosity compressor oil,the system performance increased by 18%.This improvement is more than 6% for the case that cooling fan is installed to cool the compressor element.

The Fatty Acid Composition of Butter Stored in Sheep’s or Goat’s Stomach (Karinyagi)

Butter is produced from cream or yoghurt in dairy factories and farms and called as butter or yayik butter in Turkey. Karinyagi is also made from cream and yoghurt as yayik butter, but the packaging material is different from others. Karinyagi produce by filling of butter into purified goat’s and sheep’s stomach (the traditional name is Karin) and storage in this material during self-life. The aim of this study was to determine the fatty acid composition of Karinyagi made from cream. Twenty Karinyagi samples were randomly collected from different regions of Burdur/Turkey. The fatty acid composition of samples (by gas chromatography) and chemical properties was investigated. It was deter-mined that the chemical properties of Karinyagi was similar to butter produced with cream and yoghurt. The total saturated fatty acid level of Karinyagi samples changed from 62.31 to 76.64 (mean value 67.14 ± 3.36)%, while unsaturated fatty acids of them ranged from 20.48 to 31.57 (mean value 28.46 ± 2.67)%. Minimum and maximum levels of monounsaturated fatty acids of karinyagi were determined as 18.98 % and 28.57%. Butyric, oleic and palmitic acids were dominant in Karinyagi. Palmitic acid was slightly lower comparing to data for butter produced with cream and yoghurt. As a result, the amount of Karinyagi fatty acids may be said to be significantly different from the fatty acid of yayik and cream butter.

The Interaction between Culture and Space and the Experience of an Architectural Studio

The issues of analyzing the cultural differences in architecture, and the interaction between culture and space have gained importance in many respects both in practice and in education. ＂Culture＂ and conservation of the ＂cultural heritage＂ have a place in the conditions for the ＂architectural education＂ put forward by the UNESCO （The United Nations Educational, Scientific and Cultural Organization）/UIA （International Union of Architects） Council during the 2002 meeting in Berlin. For this purpose, cultural, social, urban, environmental and architectural values and issues of architectural heritage were defined as specific subjects that should be considered in the preparation of the curriculum to build up a sense of responsibility. From this point of view, this paper aims to propose an educational process for dealing with the sense of cultural heritage and its survival in the modern world, and shares the products of the work carried out at the Project 4 Studio at Faculty of Fine Arts, Department of Interior Architecture, Yeditepe University, as the studio training is the main component of architectural education. The main issue of the paper is to present some examples of the student projects and to consider the importance of design studio, which can gain knowledge about cultural and architectural heritage and develop students＇ skills to adopt and be respectful to traditional values.

The relationship between microwear on human teeth and nutrition:Samples from ancient Anatolian societies

The relationship between tooth of living species and nutrition is so important for anthropologic researches that, it is among the most considered issues in almost all the researches that have been made about these topics. Tooth, as being one of the most significant materials that give information about diet, environmental relationships and cultural structure, has been a constant research topic. It has been proved with the researches that, the food stuffs, which living species consumed, have a fundamental role on tooth wear. The recently recognized micro marks on occlusal are also evaluated carefully as well as the macro wears, which are defined as the apparent wears on tooth enamel. These micro marks have several characteristics about the ingredients, hardness, size and chewing force of the nutrients. In this regard, the tooth samples of Agora of Smyrna, Kyzikos, MinnetpInarI and Güllüdere skeletons that lived in Anatolia—also constituted the sample of this research—have been investigated and the diet of these societies has been examined depending upon the micro marks on the teeth of these societies’ people. Firstly, the diet of these societies has been investigated by examining micro tooth wears. Then, the relationship of these societies has been studied. By examining micro tooth wears of these societies, it has been discussed that whether the factors of age, sex, and facet are effective or not on micro wear marks. As a result of this study, it has been observed that societies that lived in different areas have different diets;and micro marks on teeth are significant indicators of living spaces, subsistence economies and life styles of the societies.

The effect of compassion levels and empathic tendencies of intensive care nurses on quality of life: a cross-sectional study

Objective: This study was conducted to determine the effect of compassion levels and empathic tendencies of intensive care nurses' on quality of life. Methods: This descriptive and cross-sectional research study was completed with a total of 202 nurses. The data were collected using the Personal Information Form, Compassion Scale, Empathic Tendency Scale and Professional Quality of Life Scale. The data were analyzed using descriptive statistics, Student t test, Mann-Whitney U test, Kruskal-Wallis Test, One-way analysis of variance ( ANOVA ) , Spe a rman correlation and Multiple regression analysis. Results: As a result of multiple regression analysis, it was found that the variable of compassion ( β = - 0.263, P < 0.01) had a negative and significant effect on the quality of life of employees;and the empathic tendency ( β = 0.385, P < 0.01) variable had a positive and significant effect on the quality of life of employees. Conclusion: As the compassion levels of intensive care nurses increase, their quality of life decreases;as their empathic tendencies increase, their quality of life also increases. Psychoeducation about compassion and empathy should be given to nurses who work in intensive care units with the aim of reducing compassion fatigue.

Quasi Random Phase Approximation Predictions on Two-Neutrino Double Beta Decay Half-Lives to the First 2＋ State

Two-neutrino double beta decay （2vββ） half-lives to the first excited state are calculated in the framework of quasi random phase approximation. The quadrupole transition probabilities and the 2vββ decay amplitudes to the final ground states are reproduced by using adjustable parameters. The obtained half-lives are compared with the corresponding experimental data.

Aroma Compounds of Some Traditional Turkish Cheeses and Their Importance for Turkish Cuisine

Cheese is so important to the Turkish cuisine. It is eaten plain as part of the traditional Turkish breakfast, used in salads, and incorporated into cooked foods such as b?rek, pide, menemen and also used for some traditional desserts. There are several types of cheeses with different characteristics and aroma compounds, and they can be used for preparation of various foods as an additive. The formation of cheese aroma basically associated with lipids, proteins and lactose content of milk, besides raw or pasteurized milk, starter or non-starter bacteria, ripening conditions. Cheese flavoring agent is used in a variety of products such as salads, pizza, breads. General properties of some traditional Turkish cheeses, their aroma compounds and importance for Turkish cuisine are discussed.

Spatial statistical analysis of earthquakes in the Fethiye-Burdur fault zone

Turkey is located in the Alpine-Himalayan seismic zone.The Anatolian plate has witnessed very severe and destructive earthquakes both in the past and today.In this study,statistical analyses of earthquakes that occurred between 1914 and 2019 along the Fethiye-Burdur fault zone,which is an active line,were conducted using geographic information systems.Analyses of standard distance,standard deviational eclipse,mean center,and median center were conducted to determine the geographic distributions of epicenters with a magnitude value of 3.5 and above.Quadrat and Average Nearest Neighbor analyses were used to reveal the spatial pattern.Anselin Local Moran I and Getis Ord Gi*method were used to determining where the earthquake epicenters are clustered locally.Kernel Density analyses were conducted to measure earthquake epicenters’density.Quadrat analysis,Average Nearest Neighbor,Global Moran’s I,and Getis-Ord General G indices demonstrated that earthquakes are clustered in certain regions and are related to each other positionally.Anselin Moran’s I regional analyses revealed that high values were clustered in the West of Burdur city center and the district of Yeşilova,and similar results were obtained in the Getis Ord Gi*method.