Browsing by Author "Sutcu M."
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Item Effect of olive mill waste addition on the properties of porous fired clay bricks using Taguchi method(Academic Press, 2016) Sutcu M.; Ozturk S.; Yalamac E.; Gencel O.Production of porous clay bricks lightened by adding olive mill waste as a pore making additive was investigated. Factors influencing the brick manufacturing process were analyzed by an experimental design, Taguchi method, to find out the most favorable conditions for the production of bricks. The optimum process conditions for brick preparation were investigated by studying the effects of mixture ratios (0, 5 and 10 wt%) and firing temperatures (850, 950 and 1050 °C) on the physical, thermal and mechanical properties of the bricks. Apparent density, bulk density, apparent porosity, water absorption, compressive strength, thermal conductivity, microstructure and crystalline phase formations of the fired brick samples were measured. It was found that the use of 10% waste addition reduced the bulk density of the samples up to 1.45 g/cm3. As the porosities increased from 30.8 to 47.0%, the compressive strengths decreased from 36.9 to 10.26 MPa at firing temperature of 950 °C. The thermal conductivities of samples fired at the same temperature showed a decrease of 31% from 0.638 to 0.436 W/mK, which is hopeful for heat insulation in the buildings. Increasing of the firing temperature also affected their mechanical and physical properties. This study showed that the olive mill waste could be used as a pore maker in brick production. © 2016 Elsevier LtdItem Ceramic fibers(Elsevier, 2017) Yalamaç E.; Sutcu M.; Basturk S.B.This chapter mainly focuses on type of ceramic fibers, fabrication methods used to make ceramic fibers, and their application areas. Oxide and nonoxide ceramic fibers are being used as reinforcement materials for composites due to their unique properties of high elastic modulus and high-temperature durability. Their properties make them valuable to use in automotive, aerospace, and heat-resistant structural applications. Ceramic fibers are found in two forms, continuous (long length) and discontinuous (short length). Alumina- and silicate-based continuous oxide fibers are made by sol-gel process but short oxide fibers by melt-spinning route. On the other hand, silicon- and boron-based nonoxide ceramic fibers are currently being developed and produced by thermal conversion of polymer precursor process. © 2017 Elsevier Ltd. All rights reserved.Item Antifungal consumption, indications and selection of antifungal drugs in paediatric tertiary hospitals in Turkey: Results from the first national point prevalence survey(Elsevier Ltd, 2018) Çağlar İ.; Devrim İ.; Özdemir H.; Şahbudak Z.; Sönmez G.; Buyukcam A.; Gulhan B.; Kara A.; Aygun D.F.; Bayram N.; Celebi S.; Çetin B.; Nepesov M.İ.; Yilmaz A.T.; Kepenekli E.; Çiftdogan D.Y.; Acar M.K.; Yayla B.C.; Okumuş C.; Ecevit Z.; Hatipoglu N.; Kuyucu N.; Kosker M.; Sen S.; Karbuz A.; Sutcu M.; Duramaz B.B.; Özen M.; Çiftçi E.; Alabaz D.; Kurugol Z.; Kara A.; Kanik S.; Kilic O.; Oncel S.; Somer A.; Tapisiz A.; Belet N.; Akcan Ö.M.; Türel Ö.; Ozkaya A.; Tezer H.; Cengiz A.B.; İnce E.; Camcioglu Y.; Kocabas E.; Arisoy E.S.; Salman N.Objectives: The aim of this point prevalence survey was to evaluate the consumption, indications and strategies of antifungal therapy in the paediatric population in Turkey. Methods: A point prevalence study was performed at 25 hospitals. In addition to general data on paediatric units of the institutes, the generic name and indication of antifungal drugs, the presence of fungal isolation and susceptibility patterns, and the presence of galactomannan test and high-resolution computed tomography (HRCT) results were reviewed. Results: A total of 3338 hospitalised patients were evaluated. The number of antifungal drugs prescribed was 314 in 301 patients (9.0%). Antifungal drugs were mostly prescribed in paediatric haematology and oncology (PHO) units (35.2%), followed by neonatal ICUs (NICUs) (19.6%), paediatric services (18.3%), paediatric ICUs (PICUs) (14.6%) and haematopoietic stem cell transplantation (HSCT) units (7.3%). Antifungals were used for prophylaxis in 147 patients (48.8%) and for treatment in 154 patients (50.0%). The antifungal treatment strategy in 154 patients was empirical in 77 (50.0%), diagnostic-driven in 29 (18.8%) and targeted in 48 (31.2%). At the point of decision-making for diagnostic-driven antifungal therapy in 29 patients, HRCT had not been performed in 1 patient (3.4%) and galactomannan test results were not available in 12 patients (41.4%). Thirteen patients (8.4%) were receiving eight different antifungal combination therapies. Conclusion: The majority of antifungal drugs for treatment and prophylaxis were prescribed in PHO and HSCT units (42.5%), followed by ICUs. Thus, antifungal stewardship programmes should mainly focus on these patients within the availability of diagnostic tests of each hospital. © 2018 International Society for Chemotherapy of Infection and CancerItem Influence of tea waste concentration in the physical, mechanical and thermal properties of brick clay mixtures(Elsevier Ltd, 2019) Ozturk S.; Sutcu M.; Erdogmus E.; Gencel O.The sustainability of raw materials used in construction industry consumed large quantities of material has great importance. The use of pore-makers in the brick production is reducing the consumption of clean clay resources as well as lightness of the baked brick body. Many organic or inorganic additives have been used as pore-making in brick production for improving thermal performance. In this study, tea waste (TW) were used at different concentrations in the brick clay mixtures to examine its effects on baked brick properties. In addition to micro-structure investigations, physical, mechanical and thermal properties of bricks produced were investigated. It is concluded that tea waste additive up to 10% in brick body can be used for structural application and isolation while ratios more 10% tea waste additive for only isolation purposes. Tea wastes can be used as a pore-making additive in the brick production. © 2019 Elsevier LtdItem A novel nerve transfer: The first palmar interosseous motor branch of the ulnar nerve to the recurrent motor branch of the median nerve(Elsevier Ltd, 2020) Ozcelik I.B.; Yildiran G.; Mersa B.; Sutcu M.; Celik Z.E.; Ozalp T.Introduction: The recovery of recurrent motor branch of the median nerve might be delayed in high level median nerve injuries due to the long reinnervation distance. The aim of this study is to define a novel nerve transfer to restore the opposition and pinch. Methods: Two fresh frozen hand cadavers were used for the study. The motor branch of the first palmar interosseous muscle of the ulnar nerve was identified and dissected. Thenar branch of the median nerve was dissected from its insertion site. The motor branch of the first palmar interosseous muscle of the ulnar nerve was transferred to the thenar motor branch of the median nerve. Axon counts were examined histopathologically. Clinically this nerve transfer was performed for two female patients with a high-level median nerve injury. Mehta opposition scores were 21 and 20, respectively and the results were satisfactory six months after the surgery. Discussion: Although exploration and repair are recommended as the first treatment for median nerve injuries, the waiting time until the motor branch is reinnervated is critical in high level lesions. Nerve transfers become very important for fast recovery. Conclusions: This new nerve transfer proposal may be an important step in nerve transfer surgery. © 2020Item Effect of heat treatment parameters on the crystallization of feldspathic-based dental glass-ceramics(Taylor and Francis Ltd., 2020) Yalamaç E.; Sutcu M.; Ergani E.S.The effects of heat treatment time and temperature on the crystallization of the feldspathic glass-ceramics produced from frit powders were investigated. Two-step heat treatment processes (nucleation and crystal growth) were applied to produce glass-ceramics. In both stages, the samples were heated at different soaking temperatures and times. Tetragonal leucite crystal nucleation and growth processes were followed by XRD, SEM and dilatometer techniques. Depending on first step heat treatment temperature and soaking time the crystallization gradually increases with increasing time and temperature. The second step heat treatment soaking times showed significant change in the coefficient of thermal expansion (CTE) of the glass ceramic samples. Biaxial flexural strength (σ) of the samples slightly increases with increasing the 2nd step soak time and all results are above the required standard value of 100 MPa for the monolithic ceramic for single-unit anterior on dental restorations. © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group on behalf of The Korean Ceramic Society and The Ceramic Society of Japan.Item Epidemiological, Clinical, and Laboratory Features of Children With COVID-19 in Turkey(Frontiers Media S.A., 2021) Karbuz A.; Akkoc G.; Bedir Demirdag T.; Yilmaz Ciftdogan D.; Ozer A.; Cakir D.; Hancerli Torun S.; Kepenekli E.; Erat T.; Dalgic N.; Ilbay S.; Karaaslan A.; Erdeniz E.H.; Aygun F.D.; Bozdemir S.E.; Hatipoglu N.; Emiroglu M.; Sahbudak Bal Z.; Ciftci E.; Bayhan G.I.; Gayretli Aydin Z.G.; Ocal Demir S.; Kilic O.; Hacimustafaoglu M.; Sener Okur D.; Sen S.; Yahsi A.; Akturk H.; Cetin B.; Sutcu M.; Kara M.; Uygun H.; Tural Kara T.; Korukluoglu G.; Akgun O.; Üstündağ G.; Demir Mis M.; Sali E.; Kaba O.; Yakut N.; Kılıc O.; Kanik M.K.; Cetin C.; Dursun A.; Cicek M.; Kockuzu E.; Sevketoglu E.; Alkan G.; Guner Ozenen G.; İnce E.; Baydar Z.; Ozkaya A.K.; Ovali H.F.; Tekeli S.; Celebi S.; Cubukcu B.; Bal A.; Khalilova F.; Kose M.; Hatipoglu H.U.; Dalkiran T.; Turgut M.; Basak Altas A.; Selcuk Duru H.N.; Aksay A.; Saglam S.; Sari Yanartas M.; Ergenc Z.; Akin Y.; Duzenli Kar Y.; Sahin S.; Tuteroz S.K.; Bilen N.M.; Ozdemir H.; Senoglu M.C.; Pariltan Kucukalioglu B.; Besli G.E.; Kara Y.; Turan C.; Selbest Demirtas B.; Celikyurt A.; Cosgun Y.; Elevli M.; Sahin A.; Bahtiyar Oguz S.; Somer A.; Karadag B.; Demirhan R.; Turk Dagi H.; Kurugol Z.; Taskin E.C.; Sahiner A.; Yesil E.; Ekemen Keles Y.; Sarikaya R.; Erdem Eralp E.; Ozkinay F.; Konca H.K.; Yilmaz S.; Gokdemir Y.; Arga G.; Ozen S.; Coksuer F.; Vatansever G.; Tezer H.; Kara A.Objectives: The aim of this study is to identify the epidemiological, clinical, and laboratory features of coronavirus disease 2019 (COVID-19) in children. Methods: A retrospective study was conducted by pediatric infectious disease specialists from 32 different hospitals from all over Turkey by case record forms. Pediatric cases who were diagnosed as COVID-19 between March 16, 2020, and June 15, 2020 were included. Case characteristics including age, sex, dates of disease onset and diagnosis, family, and contact information were recorded. Clinical data, including the duration and severity of symptoms, were also collected. Laboratory parameters like biochemical tests and complete blood count, chest X-ray, and chest computed tomography (CT) were determined. Results: There were 1,156 confirmed pediatric COVID-19 cases. In total, male cases constituted 50.3% (n = 582) and females constituted 49.7% (n = 574). The median age of the confirmed cases was 10.75 years (4.5–14.6). Of the total cases, 90 were younger than 1 year of age (7.8%), 108 were 1–3 years of age (9.3%), 148 were 3–6 years of age (12.8%), 298 were 6–12 years of age (25.8%), 233 were 12–15 years of age (20.2%), and 268 cases were older than 15 years of age (23.2%). The most common symptom of the patients at the first visit was fever (50.4%) (n = 583) for a median of 2 days (IQR: 1–3 days). Fever was median at 38.4°C (38.0–38.7°C). The second most common symptom was cough (n = 543, 46.9%). The other common symptoms were sore throat (n = 143, 12.4%), myalgia (n = 141, 12.2%), dyspnea (n = 118, 10.2%), diarrhea (n = 112, 9.7%), stomachache (n = 71, 6.1%), and nasal discharge (n = 63, 5.4%). When patients were classified according to disease severity, 263 (22.7%) patients were asymptomatic, 668 (57.7%) patients had mild disease, 209 (18.1%) had moderate disease, and 16 (1.5%) cases had severe disease. One hundred and forty-nine (12.9%) cases had underlying diseases among the total cases; 56% of the patients who had severe disease had an underlying condition (p < 0.01). The need for hospitalization did not differ between patients who had an underlying condition and those who do not have (p = 0.38), but the need for intensive care was higher in patients who had an underlying condition (p < 0.01). Forty-seven (31.5%) of the cases having underlying conditions had asthma or lung disease (38 of them had asthma). Conclusions: To the best of our knowledge, this is one of the largest pediatric data about confirmed COVID-19 cases. Children from all ages appear to be susceptible to COVID-19, and there is a significant difference in symptomatology and laboratory findings by means of age distribution. © Copyright © 2021 Karbuz.Item Preparation and characterization of anorthite ceramics from sugar production solid waste: a statistical analysis of grinding parameters(Springer, 2022) Kaya V.S.; Sutcu M.; Yalamac E.The purpose of the study was to investigate the possibility of using press filter cake (PFC) waste from sugar production in the preparation of anorthite ceramics. In this study, at first step, the properties of anorthite ceramic compositions produced using different proportions of press filter cake (PFC) as calcium oxide source and chamotte as aluminosilicate source were investigated. A single anorthite phase was obtained in samples containing high PFC ratios sintered at high temperature. In the second step, the PCH-35 (35% PFC plus 65% chamotte) ceramic composition was statistically analyzed to examine grinding parameters and sintering temperatures. This composition was ground and sintered at different parameters to investigate the effects on physical, mechanical, and morphological properties on anorthite ceramics. The results indicated that the anorthite phase formed in the powders sintered at 1200 °C and 1300 °C after grinding was the major phase. With increasing sintering temperature, grinding speed, and time, the samples exhibited lower porosity, higher bulk density, and compressive strength. With the sintering of the samples at 1200 °C, the percentage of apparent porosity decreased from 49.95 to 25%, while the bulk density value increased from 1.36 to 2.03 g/cm3 with increasing grinding speed and time. When the samples were sintered at 1300 °C, the percentage of apparent porosity decreased from 49.59 to 0.33%, while the bulk density value increased from 1.33 to 2.54 g/cm3 with increasing grinding speed and time. The compressive strength results (from 26 to 82 MPa) increased due to body densification with the effect of increasing sintering temperature, grinding speed, and time. © 2022, The Author(s) under exclusive licence to Australian Ceramic Society.Item Self-cleaning and photocatalytic properties of eco-friendly clay-based facing bricks from industrial and natural wastes(Springer Science and Business Media Deutschland GmbH, 2023) Yavaş A.; Atan E.; Sutcu M.In this study, self-cleaning and photocatalytic performance of clay-based facing bricks produced using two different wastes (red mud: RM, hazelnut shell: HS) under visible light by an organic pollutant, methylene blue (MB), were discussed. The results revealed that the incorporation of waste into the samples improved the photocatalytic activity for certain ratios and also provided the desired physical properties according to the relevant standards. In terms of self-cleaning performance, the best results were obtained from the samples containing 5% RM (RM5HS) and 10% RM (RM10HS) combined with 10% of HS by weight. While RM10HS with an apparent reaction rate of 2.99 × 10−1 h−1 achieved total removal efficiency of 89.74%, RM5HS with an apparent reaction rate of 2.82 × 10−1 h−1 was able to remove 91.21% of initial concentration of MB dye. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.Item Enhancing thermal efficiency and durability of sintered clay bricks through incorporation of polymeric waste materials(Elsevier Ltd, 2023) Erdogmus E.; Sutcu M.; Gencel O.; Kazmi S.M.S.; Munir M.J.; Velasco P.M.; Ozbakkaloglu T.This pioneering study investigates the use of expanded polystyrene (EPS) and waste rubber tyre powder (WRTP) in sintered clay bricks for eco-friendly and cleaner buildings. Different ratios of EPS and WRTP were mixed with clay and sintered at 1000 °C. Advanced material characterization techniques were used to evaluate the materials, and physical, mechanical, and durability tests were performed on the bricks. The findings show that higher doses of EPS and WRTP increased the bricks' thermal efficiency and reduced their weight. Brick specimens with 0.5% EPS dosage met the weathering resistance requirements, and those with 0.5% EPS dosage and 5% WRTP dosage met the minimum compressive strength standards. The study offers valuable insights into the potential applications of EPS and WRTP in producing clean and sustainable polymer waste bricks to improve brick performance and efficient waste management in the construction industry. © 2023 Elsevier LtdItem Effect of molding pressure and firing temperature on the properties of ceramics from natural zeolite(Elsevier Ltd, 2023) Erdogmus E.; Sutcu M.; Hossain S.; Bayram M.; Sarı A.; Gencel O.; Ozbakkaloglu T.In recent years, there has been growing interest in eco-friendly and sustainable construction materials that reduce environmental impact while maintaining high-performance standards. The brick industry, in particular, is under pressure to develop solutions that incorporate waste and natural-based materials, reducing reliance on traditional energy-intensive manufacturing processes. In response, this study explores the fabrication of ceramic bricks using naturally occurring zeolite, which is widely available and offers promising properties for use in construction. The ceramic matrix is made with natural zeolite and water, pressed at three different pressures, and fired at three different temperatures. The study investigates the impact of varying molding pressures and firing temperatures on the microstructural and mechanical properties of ceramic bricks made with natural zeolite. XRF and XRD techniques were used to analyze the raw material's chemical composition, and TGA tests were conducted to evaluate the bricks' chemical stability. The study finds that the compressive strength of zeolite bricks molded at 15 MPa pressure and fired at 900 ℃ increased from 7.1 MPa to 51.2 MPa when fired at 1100 ℃. Increasing the molding pressure led to a higher compressive strength of the specimens, but the effect was minimal compared to the influence of firing temperature on the compressive strength. The apparent porosity and water absorption of the bricks decreased with increasing molding pressure and firing temperature. Further, clinoptilolite, a zeolite phase, decomposes during firing and transforms into silica polymorphs, feldspathic phases, and glassy phases. As the molding pressure increased, the irregular-shaped pores in the brick specimens decreased. Moreover, the density of the bricks increased with the firing temperature due to sintering between particles in the microstructure. By investigating the impact of molding pressure and firing temperature on the microstructural and mechanical properties of these eco-friendly bricks, this study offers insight into a potential solution for sustainable construction practices. By investigating the impact of pressing pressure and firing temperature on the microstructural and mechanical properties of these eco-friendly bricks, this study demonstrated that optimizing firing temperature and pressing pressure can significantly improve the physical and mechanical properties of zeolite bricks, including bulk density, compressive strength, water absorption, and porosity, while also reducing the environmental impact of the production process. Thus, this study offers insight into a potential solution for sustainable construction practices. © 2023Item Synergic effect of recycled paper sludge and expanded perlite on the engineering properties of porous clay bricks: A new mathematical modelling approach(Elsevier Ltd, 2023) Sutcu M.; Ozturk S.; Gencel O.Lightweight bricks produced with addition of different additive materials such as expanded perlite (EP) and recycling paper sludge (RPS) waste have been accomplished by a pug mill. Porous fired bricks were produced by using organic and inorganic additives such as paper waste and expanded perlite as pore-makers. In the experimental study, the seventeen mixture sets were prepared with Box-Behnken experimental design procedure of two additive ratios and firing temperatures. The brick samples were produced with shaping by extrusion method and firing at 850, 950 and 1050 °C for two hours after drying. Physical characteristics such as bulk density, apparent porosity and water absorption, and also, compressive strength, thermal conductivity and microstructural properties of brick samples were studied. Influences of process parameters on brick properties were investigated with a detailed neuro-regression analysis. In conclusion, the best brick composition (10 % EP + 10 %RPS by weight) in terms of thermal conductivity corresponding to acceptable mechanical properties was optimized. Accordingly, the compressive strength values of all samples are around 10 to 27 MPa. Also, the samples with high additive content (especially 10 %RPS + 5 %EP sample) exhibited the lowest thermal conductivity value (0.432 W/mK) due to the low firing temperature. © 2023 Elsevier LtdItem Developing Wallpaper/Dodecyl alcohol composite phase change materials as new kind of wall covering elements for building interior thermoregulation(Elsevier Ltd, 2023) Gencel O.; Ustaoglu A.; Sarı A.; Hekimoğlu G.; Sutcu M.; Tozluoglu A.; Tutus A.; Cicekler M.; Veer Tyagi V.This study introduces a novel wall-covering element consisting of wallpapers (WP) impregnated with Phase Change Material (PCM), with the aim of enhancing thermal properties and providing effective thermal regulation performance in interior spaces. The study conducts practical investigations into the thermal attributes of wallpapers (WPs) impregnated with Dodecyl alcohol (DDA) as the chosen PCM, culminating in a leakage-free WP/DDA wall covering element. The process of impregnating involved applying liquid DDA to the back side of the WP using a manual coating apparatus. Four distinct DDA ratios, ranging from 0% to 20% by mass of WP, were applied. The chemical compatibility of the developed WP/DDA composite was explored using Fourier Infrared Spectroscopy (FTIR). The thermal energy storage (TES) properties were assessed through Differential Scanning Calorimeter (DSC) analysis, and the thermo-regulative performance of the WP/DDA composite was evaluated in laboratory-scale test rooms under real weather conditions. The DSCoutcomesexposed that melting temperature and latent heat capacity of WP/DDA were 21.78 °C and 26.9 J/g, respectively.The thermoregulation tests showed that the prepared WP/DDAsignificantly reduce interior room temperature fluctuation and can maintain indoor temperature longer in comfortable temperature ranges. The largest difference between the reference room and test room was observed to be about 2℃. The room temperature was cooler for about 9 h 53 min during day times for the DDA case.The results designated that the developed WP/DDA composite could be evaluated as a promising new kind of building wall covering element for reducing the cooling load of room. © 2023 Elsevier LtdItem Evaluation of 601 children with multisystem inflammatory syndrome (Turk MISC study)(Springer Science and Business Media Deutschland GmbH, 2023) Yilmaz D.; Ekemen Keles Y.; Emiroglu M.; Duramaz B.B.; Ugur C.; Aldemir Kocabas B.; Celik T.; Ozdemir H.; Bayturan S.; Turel O.; Erdeniz E.H.; Cakici O.; Cakmak Taskin E.; Erbas İ.C.; Genceli M.; Sari E.E.; Caymaz C.; Kizil M.C.; Sutcu M.; Demirbuga A.; Alkan G.; Bagcı Z.; Timurtas Dayar G.; Ozkan E.A.; Tekin Yilmaz A.; Akca M.; Yesil E.; Kara S.S.; Akturk H.; Yasar B.; Umit Z.; Uygun H.; Erdem N.; Buyukcam A.; Karadag Oncel E.; Tuter Oz S.K.; Cetin H.S.; Anil A.B.; Yilmaz R.; Zengin N.; Uzuner S.; Albayrak H.; Borakay O.; Topal S.; Arslan G.; Yazar A.; Ozer A.; Kendirli T.; Kara E.M.; Demirkol D.; Battal F.; Kosker M.; Metin Akcan O.; Kihtir H.S.; Gul D.; Zararci K.; Alakaya M.; Kula N.; Celik E.; Petmezci E.; Evren G.; Kara Aksay A.; Konca C.; Sert A.; Arslan D.; Bornaun H.; Tekeli O.; Bal A.; Sahin I.O.; Demir S.; Sap F.; Akyol M.B.; Tanidir I.C.; Donmez Y.N.; Ucar T.; Coban S.; Arga G.; Hancerli Torun S.; Karpuz D.; Celik S.F.; Varan C.; Elmali F.; Oncel S.; Belet N.; Hatipoglu N.; Dalgic Karabulut N.; Turgut M.; Somer A.; Kuyucu N.; Dinleyici E.C.; Ciftci E.; Kara A.Purpose: Due to its link with the 2019 coronavirus, the multisystem inflammatory syndrome in children (MISC) has garnered considerable international interest. The aim of this study, in which MISC patients were evaluated multicenter, and the data of the third period of the Turk-MISC study group, to compare the clinical and laboratory characteristics and outcomes of MISC patients who did and did not require admission to an intensive care unit (ICU). Methods: This retrospective multicenter observational study was carried out between June 11, 2021, and January 01, 2022. The demographics, complaints, laboratory results, system involvements, and outcomes of the patients were documented. Results: A total of 601 patients were enrolled; 157 patients (26.1%) required hospitalization in the intensive care unit (ICU). Median age was 8 years (interquartile range (IQR) 4.5–11.3 years. The proportion of Kawasaki disease-like features in the ICU group was significantly higher than in the non-ICU group (56.1% vs. 43.2% p = 0.006). The ICU group had considerably lower counts of both lymphocytes and platelets (lymphocyte count 900 vs. 1280 cells × μL, platelet count 153 vs. 212 cells × 103/ μL, all for p< 0.001). C-reactive protein, procalcitonin, and ferritin levels were significantly higher in the ICU group (CRP 164 vs. 129 mg/L, procalcitonin 9.2 vs. 2.2 μg/L, ferritin 644 vs. 334 μg/L, all for p< 0.001). Being between ages 5–12 and older than 12 increased the likelihood of hospitalization in the ICU by four [95% confidence intervals (CI)1.971–8.627] and six times (95% CI 2.575–14.654), respectively, compared to being between the ages 0–5. A one-unit increase in log d-dimer (µg/L) and log troponin (ng/L) was also demonstrated to increase the need for intensive care by 1.8 (95% CI 1.079–3.233) and 1.4 times (95% CI 1.133–1.789), respectively. Conclusion: By comparing this study to our other studies, we found that the median age of MISC patients has been rising. Patients requiring an ICU stay had considerably higher levels of procalcitonin, CRP, and ferritin but significantly lower levels of lymphocyte and thrombocyte. In particular, high levels of procalcitonin in the serum might serve as a valuable laboratory marker for anticipating the need for intensive care. What is Known: • Lymphopenia and thrombocytopenia were an independent predictor factors in patients with MISC who needed to stay in intensive care unit. • The possibility of the need to stay in the intensive care unit in patients with MISC who had Kawasaki disease-like findings was controversial compared with those who did not. What is New: • A one-unit increase log D dimer and log troponin was demonstrated to require for intensive care unit by 1.8 and 1.4 times, respectively. • Serum procalcitonin levels had the best performance to predict stay in the intensive care unit stay. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.Item Preparation and performance evaluation of waste tuff-modified bricks for sustainable built environment: Effect of firing temperature and molding pressure(Elsevier Ltd, 2024) Sutcu M.; Faisal M.S.; Danish A.; Erdogmus E.; Gencel O.; Ozbakkaloglu T.The research covers an extensive array of analyses, encompassing physical, microstructural, thermal, mechanical, and durability evaluations, to unravel the properties and characteristics of waste tuff (WT)-based bricks under different firing temperatures and molding pressures. Mechanical testing, specifically compressive strength evaluation, highlighted the significant influence of firing temperature and molding pressure, with increased strength observed at elevated temperatures and pressures. However, assessing the impact of freeze-thaw cycles, it was observed that the freeze-thaw cycles led to a minor reduction in compressive strength, particularly noticeable at lower firing temperatures. The results suggest that the most favorable firing temperature and molding pressure for minimizing linear shrinkage, decreasing apparent porosity and water absorption, achieving a desirable bulk density, optimizing thermal conductivity, and attaining satisfactory compressive strength along with better resistance to freeze-thaw cycles in WT-modified bricks, are 1100 °C and 60 MPa, respectively. The promising findings of this study will help promote the production of bricks using WT, resulting in sustainable management and reduced accumulation of WT. © 2024Item Phase change material incorporated paper pulp sludge/gypsum composite reinforced by slag and fly ash for energy efficient buildings: Solar thermal regulation, embody energy, sustainability index and cost analysis(Elsevier Ltd, 2024) Kucukdogan N.; Sutcu M.; Ozturk S.; Yaprak H.; Memis S.; Gencel O.; Ustaoglu A.; Sari A.; Hekimoglu G.; Erdogmus E.This study focuses on the reuse of some industrial wastes in the development of innovative building materials and the thermal performance, environmental impacts and cost estimates of the gypsum composite material developed in the case of a phase change material impregnation. Lauryl alcohol (LA) was impregnated into paper pulp sludge (PPS) up to 45 % by weight without leakage to obtain shape-stable composites. The LA impregnated PPS (PPS/LA) was replaced with PPS at 50 % and 100 % by weight in gypsum composite. Characteristics of shape-stable composites were studied. Also, the physical, mechanical, thermal properties and solar thermoregulation tests of the produced gypsum composites were examined in addition to the embodied energy, CO2 emissions and cost analysis. The melting and solidification enthalpies of PPS/LA were found to be 100.4–100.1 J/g, with only a 0.5 % reduction in latent heat storage capacity after 500 cycles, and approximately 3 % after 1500 cycles. Although the presence of PPS/LA in the gypsum composite caused a slight decrease in compressive strength, it significantly improved solar thermoregulation performance, maintaining ambient temperatures 2.55 °C to 5 °C warmer at night and 5.3 °C to 13.8 °C cooler during the day. Gypsum composites containing the PPS/LA offer a suitable alternative for energy-efficient sustainable building application by reusing around 57 % of three different industrial wastes providing a waste-reducing environmental approach and a high level of indoor thermal comfort. © 2024