The effects of mineralogical and petrographical features of the Lake District rocks (Isparta, Turkey) on the quality of artificial marbles

Large quantities of marble blocks are produced from many new marble quarries which were opened around Isparta (Turkey) and its surrounding region. The opened quarries are also affected negatively by weathering as a result of karstification. Therefore, block efficiency of the quarries is low which results in a lot of waste materials that can be used in cultured marble production. The production of artificial marble from marble waste materials around Isparta is the main purpose of the study. The cultured marble is an attractive, healthy and homogenous building material. It has a wide application in the building construction sector. Artificial marble which is composed of mineral dusts and polyesters has high mechanical strength and they are durable to various chemical and high temperature environmental conditions. Based on physico- mechanical properties, cultured marbles are accepted by Turkish Standards (TS). The materials used for the production of qualified cultured marble are directly related to the hardness of the minerals used as filler in the polyester resin. Physico- mechanical properties of cultured marble depend on the physical properties of the filler minerals. The compressive strength of the cultured marble material is controlled by the physical properties of the filler minerals, therefore, the hardness of the cultured marble is determined by the hardness of the filler mineral. The following analyses were carried out: wet unit volume analysis, dry unit volume analysis, compressive strength of the materials, capillary water absorption analysis, analysis of ultrasound velocity (P- wave) and the marble wastes bulk chemical analyses were investigated and the results of the data were evaluated and discussed. In addition, natural and artificial marbles were compared with respect to physico- mechanical properties

Production of Fish Chips from Sand Smelt (Atherina boyeri, RISSO 1810) and Determination of Some Quality Changes

In this study, changes in some quality parameters of fish chips produced from sand smelt (Atherina boyeri, RISSO 1810) during storage period (at -18 °C for 6 months) were determined. The difference between the amount of moisture, crude protein, crude fat and crude ash components of raw fish in fish chips was significant (P0.05). However, total volatile basic nitrogen (TVB-N, mg/100g) value was changed significantly (P<0.05) between raw fish meat and pre-fried chips. The results of sensory analyses made by panelists were as follows; fish chips enjoyed it very much. The results of chemical, sensory and microbiological analyses of fish chips performed following frozen storage period at -18 °C for 6 months were within the acceptable limits

Yükseklik gradiyenti boyunca Diospyros kaki l.’de yaprak azot, fosfor, karbon değişimi ve N ve P rezorbsiyonu

In the present study, nitrogen (N), phosphorus (P), carbon (C) levels and nutrient contents, N and P resorption were investigated in Diospyros kaki L., whose leaves has a strong antioxidant property and is cultivated in the Eastern Black Sea Region. The research was carried out at four different locations where Diospyros kaki was grown within the provincial borders of Trabzon. Leaf samples were taken from these selected locations monthly from May to December. Soil samples were taken from a depth of 0-20 cm from each locality. Soil N, P and C analysis were also determined. There were important differences in N (%) concentration and N (g dm-2 ) content values in terms of localities. N, P and C (%) concentration values significantly varied among months. Similarly, there were notable differences in N and P (g dm-2 ) values depending on months. Nitrogen and phosphorus resorption efficiency (RE) values were below stated boundaries at only 796 m. Nitrogen and phosphorus resorption proficiency (RP) values significantly varied between localities.Bu çalışmada; Doğu Karadeniz Bölgesi’nde yetişen ve güçlü antioksidan içeriğine sahip Diospyros kaki L.’nin azot (N), fosfor (P), karbon (C) düzeyleri ile besin içerikleri, N ve P rezorbsiyonu incelenmiştir. Çalışma Trabzon il sınırları içerisinde yer alan Diospyros kaki’nin yayılış gösterdiği dört farklı lokalitede gerçekleştirilmiştir. Belirlenen lokalitelerden Mayıs-Aralık ayları boyunca her ay yaprak örneği toplanmıştır. Her bir lokaliteden 20 cm derinlikten toprak örnekleri alınarak N, P ve C analizleri yapılmıştır. N (%) ve N (g dm-2 ) değerleri lokaliteler arasında, N (%), P (%), C (%), N (g dm-2 ) ve P (g dm-2 ) değerleri ise aylar arasında P < 0.01 seviyesinde önemli farklılıklar göstermiştir. N ve P rezorbsiyon kullanım verimliliği değerleri sadece 796 m’deki lokalitede belirtilen sınırların altındadır. N ve P rezorbsiyon kullanım yeterlilik değerlerinin ise lokaliteler arasında önemli oranda farklılık gösterdiği tespit edilmiştir

Clustering Regression Wavelet Analysis for Lossless Compression of Hyperspectral Imagery

Recently, Regression Wavelet Analysis (RWA) was proposed as a method for lossless compression of hyperspectral images. In RWA, a linear regression is performed after a spectral wavelet transform to generate predictors which estimate the detail coefficients from approximation coefficients at each scale of the spectral wavelet transform. In this work, we propose Clustering Regression Wavelet Analysis (RWA-C), an extension of the original ‘Restricted’ RWA model which may be used to improve compression performance while maintaining component scalability. We demonstrate that clustering may be used to group pixels with similar spectral profiles, these clusters may then be more efficiently processed to improve RWA prediction performance while only requiring a modest increase side-information.This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]

Music Recommendation System based on Emotion, Age and Ethnicity

A Music Recommendation System based on Emotion, Age, and Ethnicity is developed in this study, using FER-2013 and ``Age, Gender, and Ethnicity (Face Data) CSV'' datasets. The CNN architecture, which is extensively used for this kind of purpose has been applied to the training of the models. After adding several appropriate layers to the training end of the project, in total, 3 separate models are trained in the Deep Learning side of the project: Emotion, Ethnicity, and Age. After the training step of these models, they are used as classifiers on the web application side. The snapshot of the user taken through the interface is sent to the models to predict their mood, age, and ethnic origin. According to these classifiers, various kinds of playlists pulled from Spotify API are proposed to the user in order to establish a functional and user-friendly atmosphere for the music selection. Afterward, the user can choose the playlist they want and listen to it by following the given link.Comment: 14 Pages, 10 Figures and 3 Table

Effect of seasonal, altitudinal and climatical variations on SLA and LMA parameters of diospyros kaki L.

In the present study, the variation of key leaf characteristics, such as SLA and LMA in plant samples collected from four locations were determined using a Li-Cor portable leaf area measuring device. The effect of seasonal, altitudinal and climatic variations on SLA and LMA was evaluated. There were significant differences (P<0.01) in SLA and LMA values in terms of localities, months, temperature and precipitation. There were both elevation and seasonal variables in SLA and LMA values. The highest SLA and LMA values were in May and December, respectively. SLA and LMA values increased and decreased with increasing elevation, respectively. SLA and LMA of Diospyros kaki were related with temperature and precipitation. Results indicated that there were variations on SLA and LMA parameters due to ecological factors

Foliar N and P resorption and nutrient (N, P, C, and S) contents of Vaccinium arctostaphylos L. and Vaccinium myrtillus L. from East Black Sea region of Turkey

Phosphorus (P), nitrogen (N), carbon (C), and sulfur (S) contents of the leaves and specific leaf area (SLA), leaf mass per area (LMA), and N and P resorption were researched in Vaccinium arctostaphylos L. and Vaccinium myrtillus L., economically important for the East Black Sea region of Turkey. The leaves samples were collected from Solaklı Valley in Trabzon at 60 to 1800 m for V. arctostaphylosL. and 2100 to 2300 m for V. myrtillus L. The N, C, and S contents were determined by Dumas method and P concentration by the stannous chloride method. Nutrient contents, SLA, and LMA in leaves and N, P, organic matter, and pH in soil were measured. The foliar N, P, C, and S contents of the plants depending on the altitude gradient were statistically significant. N and S contents were significantly important during the growing season for both species. There were significant differences in terms of N and P proficiency for both species. Resorption values of V. myrtillus L. were found to be within the normal limits and the resorption efficiency values increased in parallel with the altitude changes. N resorption levels of V. arctostaphylos at lower (60 m) and higher (1800 m) altitudes were below the declared limits. It was also seen that while N proficiency showed significant increase, P proficiency decreased depending on the altitude. Both N and P proficiency for V. myrtillus decreased with the altitude increase

A simple heart valve replacement technique which improves surgical time

Aim of the study: Different heart valve replacement techniques have been described in the literature. In the present study, a simple and very fast heart valve replacement technique is presented. Material and methods: In a two-year period, 87 patients with the diagnosis of mitral valve disease, aortic valve disease or combined valve disease underwent valve replacement performed by the same surgeon. In this technique, the valve was implanted with the valve clamped to the surgical dressing without the assistant holding it. Patients with coexisting surgical pathologies were excluded from the study. A control group was created among the patients who were operated on during the same time period by different surgeons with the assistant holding the prosthesis. Control group operations were done by conventional valve holding and suturing techniques. Results: Mean age of the patients was 61.6 ± 3.2 years. Mitral valve replacement (MVR) was done to 51 patients, aortic valve replacement (AVR) to 12 patients and both aortic and MVR to 24 patients. Aortic cross clamp duration was 30.7 ± 3.3 min for MVR, 34.8 ± 6.2 min for AVR and 69.1 ± 6.1 min for both valve replacements. Aortic clamping durations were significantly higher in the conventional implantation technique. Discussion: The described technique has many advantages such as short myocardial ischemia duration, better exposure of the surgical field and facilitation of assistance. © 2014 Termedia Sp. z o.o. All rights reserved

Diagnostic Value of Dynamic Contrast-Enhanced Magnetic Resonance Imaging in the Evaluation of the Biliary Obstruction

Purpose. In this study, our purpose was to investigate the diagnostic efficacy of the dynamic contrast-enhanced magnetic resonance imaging (MRI) method in the patients with bile duct obstruction. Materials and Methods. 108 consecutive patients (53 men, 55 women, mean age; 55.77 ± 14.62, range 18–86 years) were included in this study. All the patients underwent conventional upper abdomen MRI using intravenous contrast material (Gd-DTPA) and MRCP in 1.5 Tesla MRI scanner. MRCP images were evaluated together with the T1 and T2w images, and both biliary ducts and surrounding tissues were examined for possible pathologies that may cause obstruction. Results. MRI/MRCP findings compared with final diagnoses, MRI/MRCP in the demonstration of bile duct obstruction sensitivity 96%, the specificity 100%, and accuracy 96.3%, in the detection of presence and level of obstruction, the sensitivity 96.7%, specificity 100%, and accuracy 97.2%, in the diagnosis of choledocholithiasis, the sensitivity 82.3%, specificity 96%, and accuracy 91.7%, and in the determination of the character of the stenosis, sensitivity 95.6%, specificity 91.3%, and accuracy 94.5% were found. Conclusion. The combination of dynamic contrast-enhanced MRI and MRCP techniques in patients with suspected biliary obstruction gives the detailed information about the presence of obstruction, location, and causes and is a highly specific and sensitive method

The effects of mineralogical and petrographical features of the Lake District rocks (Isparta, Turkey) on the quality of artificial marbles

Large quantities of marble blocks are produced from many new marble quarries which were opened around Isparta (Turkey) and its surrounding region. The opened quarries are also affected negatively by weathering as a result of karstification. Therefore, block efficiency of the quarries is low which results in a lot of waste materials that can be used in cultured marble production. The production of artificial marble from marble waste materials around Isparta is the main purpose of the study. The cultured marble is an attractive, healthy and homogenous building material. It has a wide application in the building construction sector. Artificial marble which is composed of mineral dusts and polyesters has high mechanical strength and they are durable to various chemical and high temperature environmental conditions. Based on physico- mechanical properties, cultured marbles are accepted by Turkish Standards (TS). The materials used for the production of qualified cultured marble are directly related to the hardness of the minerals used as filler in the polyester resin. Physico- mechanical properties of cultured marble depend on the physical properties of the filler minerals. The compressive strength of the cultured marble material is controlled by the physical properties of the filler minerals, therefore, the hardness of the cultured marble is determined by the hardness of the filler mineral. The following analyses were carried out: wet unit volume analysis, dry unit volume analysis, compressive strength of the materials, capillary water absorption analysis, analysis of ultrasound velocity (P- wave) and the marble wastes bulk chemical analyses were investigated and the results of the data were evaluated and discussed. In addition, natural and artificial marbles were compared with respect to physico- mechanical properties.Publisher's Versio