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    Development, Chemical and Sensory Characterization of Chokeberry (Aronia melanocarpa) Sour Concentrate and Fruit Leather (Pestil)

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    Various products can be made from high-nutritional fruits and can be consumed throughout the year. Traditionally, leather can be produced by using some fruits such as mulberry, grape, apricot, fig, and plum, and pomegranate is generally used in sour concentrate production. This study investigated some physicochemical properties, nutritional contents and consumer acceptance of sour concentrate and leather products obtained from chokeberry (Aronia melanocarpa) fruit. Because of the characteristic astringent flavor of Aronia fruits, they cannot be consumed as raw fruit, they are consumed by processing into various products. The results revealed that sour concentrate and fruit leather contain high amounts of total phenols, flavonoids, and proanthocyanidins and have high antioxidant activity. Total phenolic content of sour concentrate and fruit leather were found 2835.52 ± 258.70 mg GAE for 100 g DM and 2043.36 ± 59.60 mg GAE for 100 g DM, respectively. The sensory evaluation of sour and leather proved the acceptability by consumers. As a result of this study, it was concluded that new and healthy sour and leather can be produced commercially and alternatives to traditional products

    Refinement of ICESat-2 derived inland water surface levels with the TG20 local geoid model: In the case of Türkiye lakes

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    This study examined the contribution of the Türkiye Geoid 2020 (TG20) local gravitational model to water height estimation using ICESat-2 ATL13 data. We tested eight separate lakes in Türkiye to achieve this aim. The EGM2008 values were determined by a comparison of the orthometric heights derived from ATL13 data and the ellipsoidal heights derived from ATL03 data. Subsequently, the corresponding latitude and longitude values within the local gravitational model were obtained and integrated into the ICESat-2 data. The root mean square error (RMSE) for the unfiltered and filtered ATL13EGM2008 data was 0.66 m and 0.53 m, respectively. The filtering method in the ATL13TG20 data resulted in an average improvement of the RMSE from 0.62 m to 0.27 m. The local gravity model refinement tested in 8 different lakes showed an RMSE improvement ranging from 17% to 71%. This study demonstrates that local gravity models significantly improve the vertical accuracy of ICESat-2

    A Study on the Conservation and Restoration Process of the Structural Wooden Elements in the 15–18th Century Monumental Ottoman Masonry Buildings

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    Ottoman Architecture reached a unity of style and constructional perfection in the 16th century under the leadership of Architect Sinan. The monumental structures built in mainly in the capital city Istanbul, show the best examples of Ottoman Masonry construction techniques until the innovations introduced by the industrial revolution. Research on Architect Sinan and Classical Ottoman Architecture has provided a lot of new information about the constructions techniques and architectural features of the monumental buildings of this period, especially thanks to the increasing restoration practices. Recent more comprehensive research has revealed that structural wooden elements regularly found within the monumental masonry buildings play an important functional role. In these monumental masonry buildings, structural wooden elements starting from the bottom of the foundations extending to the upper cover of the building, constitute an important of these structures. The restoration of these decaying organic timber structural elements in the masonry structure, from wooden piles to floor grid systems and in-wall wooden beam connection systems is an important subject of discussion in modern restoration works, especially in-wall wooden beams systems. The purpose of this article is to examine the condition and conservation problems of the structural wooden elements within the masonry structures, which are important components of the 15th-18th century Ottoman monumental architecture, with various examples

    Refik Halid Karay

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    Experimental and numerical analysis of hot deformation during press forming of Ti-6Al-4V alloy for aerospace applications

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    In this study, hot press forming of an aero-structural Ti-6Al-4V sheet was examined by experimental and numerical simulation. The effects of hot forming parameters were examined in experiments performed at 700 degrees C and 800 degrees C forming temperatures, 0.5 mm/s and 2 mm/s intervals, different press tonnages and holding times. Stress and equivalent plastic strain distributions and shell thickness changes during forming were estimated with finite element analysis in ABAQUS-CAE software. According to the results, it was seen that the most significant effect on formability among the forming parameters was temperature, and the forming tonnage and holding time were also effective. With the finite element model created, the material behavior could be predicted numerically with high accuracy

    Search for light long-lived particles decaying to displaced jets in proton-proton collisions at √s = 13.6 TeV

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    A search for light long-lived particles (LLPs) decaying to displaced jets is presented, using a data sample of proton-proton collisions at a center-of-mass energy of 13.6 TeV, corresponding to an integrated luminosity of 34.7 fb−1, collected with the CMS detector at the CERN LHC in 2022. Novel trigger, reconstruction, and machine-learning techniques were developed for and employed in this search. After all selections, the observations are consistent with the background predictions. Limits are presented on the branching fraction of the Higgs boson to LLPs that subsequently decay to quark pairs or tau lepton pairs. An improvement by up to a factor of 10 is achieved over previous limits for models with LLP masses smaller than 60 GeV and proper decay lengths smaller than 1 m. The first constraints are placed on the fraternal twin Higgs (FTH) and folded supersymmetry (FSUSY) models, where the lower bounds on the top quark partner mass reach up to 350 GeV for the FTH model and 250 GeV for the FSUSY model

    An experimental and simulation study for hydrogen and short-chain alcohol along with diesel fuel on the CRDI engine behaviors

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    Hydrogen (H2) and ethanol (C2-type short-chain alcohol) mixtures are receiving significant interest as alternative fuel substitutes in diesel engines. This study numerical investigates the combined effects of using hydrogen and ethanol (at concentrations of 5 %, 10 %, and 15 %) blends on a diesel engine's performance, combustion, and emissions characteristics using diesel R-K software. The results showed that nearly all hydrogen blend enrichments consistently produced higher BTE than that of only ethanol-added test fuel. Hydrogen availability in the combustion chamber also lowered the specific fuel consumption. Concerning the combustion characteristics, compared to the base fuel, the hydrogen enrichment increased the maximum cylinder pressure, while the ethanol decreased it. Increasing the amount of hydrogen for all engine loads leads to an observed improvement in brake thermal efficiency by 16.1 % and cylinder pressure by 3.3 % for BF(basefuel)+10%H2compared to base fuel at full load. This is attributed to the enhanced mixture formation and greater flame speed of hydrogen. Higher engine loads, including 15 % hydrogen resulted in increased exhaust temperature, soot, and NOx due to higher in-cylinder temperature value. However, it also led to considerable reductions in specific fuel consumption emissions, PM emissions, and smoke emissions across all loads. This study achieved higher levels of PM emission reduction, reaching up to 15 % hydrogen content. Furthermore, introducing 15 % hydrogen resulted in a significant surge in NOx emissions

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