Development of Upper Euphrates Basin hydro-economic model and hydropower generation optimization

Hydro-economic optimization models are common in hydropower reservoir modeling to aid system operators and planners. In these models, operations are driven by the economic value and constrained by the availability of water. The objective is to either minimize total costs or maximize total benefits. In this study, a hydro-economic optimization model for the integrated reservoir system of the Upper Euphrate s Basin, with major tributaries providing water flow to the Euphrates River, is introduced. These model the 10 large-scale reservoirs of the basin with a total installed capacity of 3,255 MW. Water management and hydropower decision-making operations are evaluated with a piecewise linear programming algorithm in monthly time steps using a 45-year historical hydrology between 1971 and 2016. The model aims to maximize hydropower revenue over a long-term time horizon with energy prices varying by month. Reservoir storage and turbine release decisions are optimized for multiple hydropower plants connected in serial or parallel. Hydropower generation, revenue, reservoir storage, capacity ratios and generation reliability results are analyzed. Results show that these hydropower plants generate about 9,481 Gigawatt hour (GWh) of energy with an average turbine capacit y use of 36% and obtain a revenue of 620 million $ per year

Bloody nipple discharge in 2 infants with interesting cytologic findings of extramedullary hematopoiesis and hemophagocytosis

Bloody nipple discharge in the infantile period is an uncommon finding. Despite its stressful course to the parents, it is generally a benign condition with a spontaneous resolution. The approach to bloody nipple discharge in the infantile period is well documented in the literature even though the number of these cases is limited. We report 2 infants with unilateral bloody nipple discharge. Their physical examination, laboratory, and ultrasound findings were normal but the cytologic examinations of the discharge revealed signs of extramedullary hematopoiesis and hemophagocytosis. These extraordinary findings made us brainstorm on the probable ongoing processes in the infantile breast tissue

Naiv hepatit C enfeksiyonlu hastaların on-altı yıllık prognozu

Objectives: In this study, we aimed to evaluate the clinical course of treatment-naive patients infected with hepatitis C virus (HCV) who were followed up in various centers in Turkey. Materials and Methods: This was a retrospective study performed with the participation of 15 centers. Patients aged 18 years and older with HCV infection were included. Results: A total of 391 treatment-naive patients infected with HCV were included in this study. During the follow-up period, the final values of alanine aminotransferase, aspartate transaminase, and total protein were significantly decreased when compared to the initial values (p<0.001, p<0.001, and p=0.005, respectively). In the study group, 19.2% of the patients underwent liver biopsy and 4.1% underwent transient elastography (FibroScan). An increased histological activity index (HAI) score and fibrosis in the second biopsy were observed in one patient, only increased HAI in two patients and increased fibrosis in one patient, as shown on the FibroScan. In the 16 years of the study period, cirrhosis was radiologically detected in only one patient. Conclusion: Even if rapid progression is not observed, close monitoring of the clinical findings related to liver failure and fibrosis with invasive or non-invasive methods may be useful.Amaç: Bu çalışmada ülkemizin çeşitli merkezlerinde takip edilen naiv hepatit C virüs (HCV) ile enfekte hastaların klinik seyrini değerlendirmeyi amaçladık. Gereç ve Yöntemler: Bu çalışma retrospektif olarak 15 merkezin katılımıyla gerçekleştirilmiştir. Çalışmaya 18 yaş üstü, HCV enfeksiyonu olan hastalar dahil edilmiştir. Bulgular: Çalışmada 391 tedavi-naiv HCV enfeksiyonlu hasta yer almıştır. Hastaların takip süresinde son alanine aminotransferase, aspartate transaminase ve total protein değerleri ilk düzeyine göre önemli düzeyde azalmıştır (sırasıyla p<0,001, p<0,001, p=0,005). Çalışma grubunda hastaların %19,2’sine karaciğer biyopsisi, %4,1’ine elastografi (FibroScan) uygulanmıştır. Takip esnasında bir hastada ikinci biyopside histolojik aktivite indeksi (HAI) ve fibroziste artma, iki hastada sadece HAI’da artma, birinde FibroScan ile fibrozis değerinde artma olduğu gözlenmiştir. Bir hastada 16 yıl içinde radyolojik olarak siroz saptanmıştır. Sonuç: Hızlı progresyon gözlenmemekle birlikte hastaların izleminde karaciğer yetmezliği ile ilgili klinik bulguların ve invaziv veya noninvaziv yöntemlerle fibrozisin yakın takibi yararlı olabilir

Investigation of the components of Deve çökerten (Tribulus terrestris L.) by different extraction methods.

TEZ12020Tez (Yüksek Lisans) -- Çukurova Üniversitesi, Adana, 2019.Kaynakça (s. 63-72) var.XV, 78 s. : res. (bzs. rnk.), tablo ; 29 cm.Bu çalışmada sistematik adı Tribulus terrestris L. olan bitkinin kimyasal kompozisyonunun tespitinde Sub-kritik su ekstraksiyonu (sbkH2O) ve Sub-kritik etanol ekstraksiyonu (sbkEtOH) yöntemlerinin etkileri incelenmiş ve yöntemler kıyaslanmıştır. Ayrıca Ultrasonik (USE) destekli tert-butil metil eter ekstraksiyonu ve tert-butil metil eter ile maserasyonun etkileri incelenmiş ve kıyaslanmıştır. Bunun yanında Tribulus terrestris L.‘in sbkH2O ile ekstraktının biyolojik aktivite tayini ve Tribulus terrestris L. ekstraktında Kjeldahl Yöntemi ile toplam azot (protein) tayini yapılmıştır. SbkH2O ekstraktında ana bileşenlerden biri olan Loliolide % 1,86, Loliolide türevi ise % 10,75 oranında tespit edilmiştir. USE’a göre ekstraktın ana bileşenlerinde % 50,30 oranında Oleamide ve % 1,49 oranında Loliolide türevi tespit edilmiştir. Maserasyonda ekstraktın ana bileşeninde % 6,62 oranında Oleamide ve % 0,20 oranında Loliolide türevi tespit edilmiştir. Tribulus terrestris L. ekstraktı ile yapılan biyolojik aktivite tayinine göre Candida albicans türü maya üzerinde yapılan antifungal çalışmada sonuç pozitif bulunmuştur. 22 mm zone çapı oluşmuştur. Kjeldahl Yöntemi ile yapılan toplam azot (protein) tayinine göre ise bitkide %14,47??1,73 oranında protein tespit edilmiştir.In this study, the effects of Sub-critical water extraction (sbcH2O) and Sub-critical Ethanol extraction (sbcEtOH) methods were investigated. These methods were compared in order to determine the chemical composition of the plant which has systematic name is Tribulus terrestris L.. In addition, the effects of (USE) Ultrasonic Asisted tert-butylmetyl ether extraction and maceration with tert-butylmetyl ether were investigated. These methods were compared. Besides, the biological activity determination of the extract of Tribulus terrestris L. with sbcH2O and the total nitrogen (protein) determination by Kjeldahl Method in Tribulus terrestris L. extract were investigated. Overall in this study in sbcH2O extraction 1.86 % Loliolide and 10.75 % Loliolide's derivative were observed. In the USE, 1.49 % of Loliolide and 50.30 % of Oleamide were determined. İn total, 0,20 % of Loliolide and 6,62 % of Oleamide were determined in maceration. According to the biological activity determination of Tribulus terrestris L. extract, the antifungal study on Candida albicans yeast was positive. A zone with a diameter of 22 mm has been formed. According to the total nitrogen (protein) determination by Kjeldahl Method, 14.47 ± 1.73 % protein was identified in the plant

Metagenomic assessment of prokaryotic diversity within hypersaline Tuz Lake, Turkey

WOS:000703487400011Tuz Lake is the second biggest lake with an extreme hypersaline environment (over 32% (w/v) salt) in Turkey. It is reported that the lake was of marine origin, and its formation began with tensional movements during the Late Cretaceous and the Late Eocene. We conducted this research to determine the prokaryotic diversity of Tuz Lake by metagenomics approach, which is 16S rRNA amplicon sequencing of microbial communities in their natural environments. Hence, next-generation sequencing and then bioinformatic analysis was used to investigate the microbial structure of halophilic Bacteria and Archaea in Tuz Lake. Metagenomic analysis of reads revealed that all the archaeal populations in Tuz Lake belonged to the Euryarchaeota and Nanoarchaeaeota phyla. Haloquadratum (34%), Haloparvum (31%), Halonotius (7%), Halorubrum (3%), Halapricum (2%), Halobellus (3%), Natronomonas (1%), Halococcus (1%), and Halobacterium (1%) were found as the dominant archaeal genera. The most abundant and diverse bacterial phyla were Bacteroidetes and Proteobacteria. The remaining bacterial taxa were assigned to Acetothermia, Cyanobacteria, Firmicutes, and Halanaerobiaeota. Salinibacter (3%), uncultured microorganisms (1%), Pseudomonas (<1%), Arhodomonas (<1%), Halorhodospira (<1%), Chromobacterium (<1%) were the most common genera in bacterial diversity. Monthly and seasonal potential interactions among environmental factors and taxa were investigated. It was detected that several environmental factors such as temperature, salinity, and drought might have significant effects on microbial richness

Green synthesis of ZnO nanoparticles with Veronica multifida and their antibiofilm activity

WOS:000497079700001PubMed:31726879In the present study, Veronica multifida leaf extract and zinc acetate dihydrate were utilized to synthesize zinc oxide (ZnO) nanoparticles (NPs) eco-friendly and cost-effectively under different physical conditions. Soxhlet extractor was used for the preparation of aqueous plant extract. UV-Vis (ultraviolet-visible) spectrophotometer, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscope (TEM) were used to characterize the ZnO NPs. UV-Vis spectrophotometer in the range of 200-800 nm was used to get information about the formation of ZnO NPs at different pH and temperatures. FTIR spectrum revealed the presence of functional groups in ZnO NPs. XRD, scanning electron microscope, and TEM analyses confirmed the crystal structure and average size of ZnO NPs. The antimicrobial activities of ZnO NPs were tested on microorganisms, that is, Escherichia coli ATCC 43895, Staphylococcus aureus ATCC 29213, Bacillus subtilis, Bacillus licheniformis, Pseudomonas aeruginosa, and Salmonella typhimurium. Moreover, antibiofilm activity of ZnO NPs was performed against P. aeruginosa and S. aureus ATCC 29213. ZnO NPs have shown effective antimicrobial and antibiofilm activities against tested microorganisms. The results elucidated that eco-friendly and cost-effectively produced ZnO NPs could be used as coating materials and in a wide range of industrial applications, such as pharmaceutical industries and cosmetics.Karamanoglu Mehmetbey University Coordinatorship of Scientific Research ProjectKaramanoglu Mehmetbey University [21-M-17]The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the Karamanoglu Mehmetbey University Coordinatorship of Scientific Research Project [Grant Number: 21-M-17]