89,758 research outputs found
The effect of nitrogen / phosphorus (N/F) ratio on nitrate removal in sulfur based mixotrophic denitrification process
No full textTüm dünyada olduğu gibi Türkiye’de de tarımsal sulama, yoğun gübreleme, atıksuların uygunsuz deşarjı gibi nedenlerle sularda nitratın arttığı görülmektedir. Sağlığa zararları nedeniyle nitratın giderimi için pek çok arıtma teknolojileri geliştirilmiştir. Bu çalışmada mevcut nitrat giderim yöntemlerine alternatif, etkin ve avantajlı bir yöntem olan miksotrofik denitrifikasyon kullanılmıştır. Bu yöntem ototrofik ve heterotrofik denitrifikasyonun birlikte kullanılması esasına dayanır. Bu nedenle miksotrofik denitrifikasyonu etkileyen elektron verici kaynağı, karbon/azot (K/A) oranı, azot/fosfor (A/F) oranı, sıcaklık, Hidrolik Bekleme Süresi (HBS), pH, alkalinite, girişte verilen organik maddenin cinsi gibi pek çok parametre bulunmaktadır. Bu çalışma ile miksotrofik denitrifikasyonun etkin bir şekilde gerçekleşmesi için gerekli optimum A/F oranının tespit edilmesi amaçlanmıştır. Bu amaçla kurulan laboratuvar ölçekli kolon reaktörlerde elektron vericinin kükürt ve metanol, elektron alıcının nitrat olduğu bir sistem kurulmuştur. Literatür incelenerek 5/1, 5/0.5, 5/0.25, 5/0.1 A/F oranları seçilmiş ve bu oranlarda reaktörler işletilmiştir. İşletme koşullarının belirlenmesinde motivasyon, besine eklenecek fosfat miktarı için optimum miksotrofik koşulları sağlayacak minumum miktarın tespiti olmuştur. Reaktör sıcaklığının 20±5 C0 olduğu koşullarda miksotrofik denitrifikasyonun ÇOK/NO3-N 0.66 oranında gerçekleştiği bulunurken, optimum A/F oranın 5/0.5 olarak bulunmuştur. Böylece hem ÇOK/NO3-N oranı hem de A/F oranı literatürde bildirilen değerlerden daha düşük olduğu halde miksotrofik denitrifikasyonun başarılı bir şekilde gerçekleştiği görülmüştür.As in the whole world, nitrate is increasing in water resources in Turkey. Many treatment technologies have been developed for nitrate removal due to their health hazards. In this study, mixotrophic denitrification, which is an effective and advantageous alternative to existing nitrate removal methods, was used. This method is based on the combined use of autotrophic and heterotrophic denitrification. In this study, it was aimed to determine the optimum N/P ratio required for mixotrophic denitrification. For this purpose, a system in which the electron donor is sulfur and methanol and the electron acceptor is nitrate has been established. According to the literature, 5/1, 5/0,5, 5/0,25, 5/0,1 N/P ratios were selected and reactors were operated at these ratios. The motivation in determining the operating conditions was the determination of the minimum amount of phosphate to be added to the food. While mixotrophic denitrification was found to occur at a ratio of DOC/NO3-N of 0,66, the optimum N/P ratio was found to be 5/0,5. Although these values were lower than the values reported in the literature, it was observed that the mixotrophic denitrification was successful
Fuzzy rule interpolation for multidimensional input spaces in determining d50c of hydrocyclones
No full textFuzzy rule-based systems have been very popular in many engineering applications. In mineral engineering, fuzzy rules are normally constructed using some fuzzy rule extraction techniques to establish the determination model in predicting the d50c of hydrocyclones. However, when generating fuzzy rules from the available information, it may result in a sparse fuzzy rule base. The use of more than one input variable is also common in hydrocyclone data analysis. This paper examines the application of fuzzy interpolation to resolve the problems using sparse fuzzy rule bases, and to perform analysis of fuzzy interpolation in multidimensional input spaces
Physical Disintegration of Toilet Papers in Wastewater Systems: Experimental Analysis and Mathematical Modeling
No full textPhysical disintegration of representative toilet papers was investigated in this study to assess their disintegration potential in sewer systems. Characterization of toilet papers from different parts of the world indicated two main categories as premium and average quality. Physical disintegration experiments were conducted with representative products from each category according to standard protocols with improvements. The experimental results were simulated by mathematical model to estimate best-fit values of disintegration rate coefficients and fractional distribution ratios. Our results from mathematical modeling and experimental work show that premium products release more amounts of small fibers and disintegrate more slowly than average ones. Comparison of the toilet papers with the tampon applicators studied previously indicates that premium quality toilet papers present significant potential to persist in sewer pipes. Comparison of turbulence level in our experimental setup with those of partial flow conditions in sewer pipes indicates that drains and small sewer pipes are critical sections where disintegration of toilet papers will be limited. For improvement, requirements for minimum pipe slopes may be increased to sustain transport and disintegration of flushable products in small pipes. In parallel, toilet papers can be improved to disintegrate rapidly in sewer systems, while they meet consumer expectations
Pre-Radiotherapy F-18 FDG PET/CT Predicts High-Risk Subvolumes for Residual Disease in Patients with Non-Small Cell Lung Cancer
No full textThe appearance of residual disease in F-18-FDG-PET/CT after radiotherapy (RT) in non-small cell lung cancer (NSCLC) is associated with worse survival. The aim of this study was to demonstrate the corresponding subvolume of tumours in pre-RT F-18-FDG-PET/CT (PET1) in patients in whom residual tumour was seen in post-RT F-18-FDG-PET/CT (PET2) after definitive RT/chemoradiotherapy (CRT). Patients with inoperable stagel-IIINSCLC and who received chemoradiotherapy and/or radiotherapy alone and had residual tumour in PET2 were included. After matching the SUV threshold (70%, 80%, and 90%) delineated image seen in PET2 with PET1, we manually increased the tumour threshold of volume of interest (VOI) in PET1. We found which SUV threshold (70%, 80%, 90%) delineated VOI in PET2 corresponded to which tumour subvolume in PET1. Thirty patients were included in the analysis. The median subvolume threshold corresponding to a SUV threshold of 70% VOI in PET2 was 50% (range, 40-65%). The mean SUV subvolume threshold in PET1 corresponding to an 80% SUV threshold VOI in PET2 was 56.3 +/- 7.5% (range, 40-70%). The mean SUV subvolume threshold in PET1 corresponding to a 90% threshold VOI in PET2 was 64.5 +/- 7.5% (range, 50-80%). Pre-RT F-18-FDG-PET/CT can predict high-risk subvolumes for residual disease after radiotherapy. Threshold values of SUVmax 50%, 56.3%, and 64.5% corresponded to high risk areas for residual disease in pre-RT 18F FDG PET/CT
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Reply to Aydin et al: “To what extent is it right to measure serum vaspin, obestatin, and apelin-36 levels without a protease inhibitor in nonalcoholic fatty liver disease?”
No full text[No abstract available
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
Relationship between nutritional status, anthropometric measurements and dietary inflammatory index in professional football players
No full textObjective: This study was carried out to evaluate the relationship between the nutritional status, anthropometric measurements and dietary inflammatory index (DII) of professional football players exposed to long-term intense exercise. Method: Twenty-one professional male football players with a mean age of 26.00 +/- 5.69 years playing in the same club participated in the study. The nutritional status of the football players was evaluated with 3-day food consumption record (2 days of training and 1 match day). DII scores were calculated using data on 34 nutrient/nutritional ingredients obtained from the food consumption records. Body fat percentage in the anthropometric evaluations were determined by caliper and skinfold thicknesses. Results: The median DII scores of the football players were found as - 3.42 (-9.95 - 0.95), and their nutritional intake were found to be anti-inflammatory. When the relationship between the DII scores of the football players and their anthropometric measurements was examined, a positive and significant correlation (R: .476; p: .029) was found between their DII score and their abdominal adiposity. However, there was no significant correlation (p> .05) between the DII scores and the other anthropometric measurements. In addition, there was a significant negative correlation (R: - .468; p: .032) between fiber consumption and abdominal adiposity, and a significant positive correlation between carbohydrate and fat consumption and body weight (respectively R= .730 p= .000; R= .526 p= .014). Conclusion: It has been revealed that the football players participating in our study generally have an anti-inflammatory diet. It was also found that abdominal adiposity was higher in the football players with high DII scores
Analysis of microbiota profile and nutritional status in male professional football players
No full textBACKGROUND: The interest in the effect of gut microbiota on athlete health has increased in recent years. Available data indicate a relationship between gut microbiota composition and physical activity, suggesting that changes in the microbiota may contribute to the host\"s physical performance. Studies show that leaky gut syndrome is highly correlated with upper respiratory infections and gastrointestinal disorders in endurance sports. This study aims to reveal the relationship between microbiota profiles, and the nutritional status of football players who perform endurance exercises. METHODS: Twenty male professional football players playing in one of the Turkish Football Federation Second League clubs participated in the study. Fecal samples were collected and stored at -86 °C, and the fecal microbiota was analyzed through 16s rRNA gene sequencing. The body composition of the football players was measured using a bioelectrical impedance analyzer. In addition, the 3-day food intake of the participants was recorded with the help of a dietitian. RESULTS: In the microbiota of football players, four phyla, 10 genera, and four species with densities above 1% were found. Body fat percentage was observed to be negatively correlated with the species of Faecalibacterium prausnitzii and Bacteroides vulgatus and the genus of Faecalibacterium (P<0.05). Considering the nutritional status, the fat intake was found to be positively correlated with Actinobacteria and Blautia coccoides; energy and fiber intake with Prevotella and Prevotella copri (P<0.05). In addition, there was a negative correlation between carbohydrate intake and Faecalibacterium (P<0.05). CONCLUSIONS: Our study is the first to reveal the microbiota profile of professional Turkish football players. It was found that football players\" nutritional status and anthropometric measurements of are significantly related to phylum, genus and species ranks in the microbiota. These results support the bidirectional interaction between microbiota and sports. The relationship between microbiota and sports health/performance is thought to be further clarified with future studies
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
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