128 research outputs found
1980’lere Nasıl Bakabiliriz? Salt, Çoklukta Tekillik Sergi ve Atölyesi Kapsamında Konuşma
No full text##nofulltext##İnceoğlu, Arda (MEF Author)..
Art Arda Teslimli Satış Sözleşmelerinde Satıcının (borçlu) Temerrüdüne Bağlı Sonuçlar
No full text##nofulltext##Kadir Berk Kapancı (MEF Author)Art arda teslimli satış sözleşmesi, satıcının satış konusu mala ilişkin borcunu birden fazla defada ve birbirini izleyen farklı ifa zamanlarında olmak üzere ayrı ayrı gerçekleşecek teslimatlar dairesinde ifa etmesini öngörür. Bu sözleşme duruma göre dönemli veya sürekli mahiyette olabilir. İlgili sözleşme yapıları dahilinde satıcının bir veya birden fazla teslim borcunda temerrüde düşmesi halinde nasıl bir uygulama yapılacağı aydınlatılmalıdır. Duruma göre farklı olasılıklar söz konusu olabilecektir, her bir somut durum ayrı ayrı ele alınmalıdır. İşbu çalışma, farklı yapılarda ortaya çıkabilecek art arda satış sözleşmelerinde satıcının temerrüdüne bağlı sonuçları ayrıntılarıyla ele almayı hedeflemektedir
Extraction of High-Value Lipids and Phenolic Compounds from Sorghum Bran via a Sequential Supercritical Carbon Dioxide Approach
No full textSorghum bran, containing high-value
lipids and phenolic compounds,
is an underutilized food processing byproduct. This study developed
and optimized a green method based on a sequential pure supercritical
carbon dioxide (SC–CO2) and ethanol/water-modified
SC–CO2 extraction to extract wax-rich lipids and
phenolic compounds from sorghum bran in a single step. The extraction
conditions, namely, temperature (20–100 °C), pressure
(20–40 MPa), extraction time (0.5–5 h), and cosolvent
type (ethanol or ethanol–water), were optimized for the highest
wax-rich lipids and phenolics extraction yields. In the first part,
neat SC–CO2 at 40 MPa and 60 °C resulted in
the highest lipid yield (6.2%, w/w dry basis), which contained ∼5%
(w/w) high-melting point waxes. The purified wax fractions containing
phytosterols showed high melting points of 57–87 °C. In
the second part, the highest total phenolics and flavonoids yields
were achieved at 40 MPa and 40 °C via 15% (w/w)
ethanol–water (1:1, v/v) modified SC–CO2 by
150 ± 3 mg of gallic acid equivalent (GAE)/100 g of bran (dry
basis) and 99.6 ± 4 mg of catechin equivalent (CAE)/100 g of
bran (dry basis), respectively. Overall, this study provides a novel
single-step extraction approach based on SC–CO2 to
extract and fractionate lipids and phenolic compounds from sorghum
bran
Biolipid Production by the Oleaginous Yeast Rhodosporidium Toruloides Using Apple Pomace as a Primary Carbon Source
No full textValorization of Apple Pomace Via Single Cell Oil Production Using Oleaginous Yeast Rhodosporidium toruloides
No full text© 2022, The Author(s), under exclusive licence to Springer Nature B.V.Apple pomace was used as a sole raw material for single cell oil (SCO) production by the oleaginous yeast Rhodosporidium toruloides DSM 4444. Preliminary studies with glucose medium revealed 100 mL of working volume in 500 mL Erlenmeyer flask as the most efficient in terms of lipid content. Thus, apple pomace hydrolysate was tested in six different conditions using 100 mL medium. The detoxified hydrolysate without chemical supplement (D medium) was found to be the most viable medium by 47.5 ± 2.47% lipid on dry cell basis (w/w). Apple pomace hydrolysate was also proven effective for SCO productions in bench-top fermenter (1 L working volume) under controlled temperature (25 °C), pH (5.0), and aeration (1vvm) by 40.1 ± 5.51% (w/w) lipid content. The same medium resulted in 50.9% (w/w) lipid on a dry cell basis in 30 L industrial-type bioreactor with 10 L of working volume, without exact control of temperature and pH. The results confirm that apple pomace is a prosperous raw material for SCO production in flask and fermenter scales. Graphical Abstract: [Figure not available: see fulltext.]
Mediative Performance of Creative Precariat in the Age of Digitalization
No full textIn this thesis, I define the artists who perform physical performances as the artist precariat. Starting from the concept of precariat, I am researching how the life of the precariat artist was affected socially and economically in the transition from physical performance to meditated performance in the age of digitalization. Since this research coincided with the COVID-19 pandemic, I will have better analyzed the companies that were positively and negatively affected by the lockdown and the dimension of precariousness experienced by the artists. In this thesis, the formation of mediatized performance (distributing the video and audio recordings of the produced performance to different media channels) will be explained, to understand what the concept of contemplation is, and to understand the possible losses in art when contemplation becomes cool (artificial) in physical stage art. In addition, I expressed what the concept of precariat means in different studies and why I need to use this concept in this study. Data obtained by semi-structured interviews, which were held with stage company owners and physical performance artists (snowball sampling) and participant observation in field, were analyzed by discourse analysis techniques. Based on the collected data, the relationship between transforming art and artist insecurity will be examined. My analysis is composed of three sections: (1) to examine the measures and difficulties faced by art center owners, audiences, and artists regarding digitalization with the concepts of Baudrillard's “immortality” and Barthes’s “the author is death”. (2) Investigating the social precariousness created by the financial precariousness of flexible working in the arts sector (in the context of age and gender). Examining the concept of “precariat class” used by Guy Standing in his work on precarious working and flexible employment by focusing on the artist group and adding dimension (depth) to the concept in this direction. (3) To explore the adaptation process of precariat art to mediation shifting in the light of Byung-Chul Han’s concept of the “Banopticon” and Durkheim’s study of suicide. As a result of the interviews and fieldwork outputs, the death of art, which was defined metaphorically in the first place, eventually turned into the actual end of the artist. I contend that creative stage artists have difficulties in the transition process because their digital media knowledge and skills are insufficient, rendering them financially and socially precarious. Unemployment and insecurity experienced by the precariat artist in the culture and art sector affect not only the artist himself, but also the family members of the artist, art-loving individuals and the society. For this reason, the artist's insecurity becomes a collective problem rather than an individual one
Production and Enrichment of Erucic Acid Methyl Ester Analytical Standards from Natural Oils for Food Control Analysis
No full textFoods high in erucic acid (EA), a fatty acid considered a natural toxin, can pose various health risks. Studies have reported that people exposed to high levels of EA are more likely to experience cardiovascular disease, are susceptible to myocardial adiposity, and have increased rates of diabetes. Therefore, in 2019, the European Commission (EC) declared that the maximum EA content in vegetable oils should be no more than 2%. These regulations require EA analysis in import and export food samples. A methyl ester of EA (EAME) standard is required to analyze EA content. In many countries, this analytical standard is not available and is being imported. This study endeavored to economically produce the EAME standard, which is in high demand due to mandated analysis, using natural oils. Initially, the fatty acid amounts in the food samples were analyzed by the gas chromatography–mass spectrometry/flame ionization detection (GC-MS/FID) method. The analyses revealed that mustard seed oil had the lowest EA content, while yellow mustard seed oil had the maximum EA content. The esterification was conducted on the samples containing both high and low EA, resulting in an efficiency of approximately 80%. The crystallization process was subsequently repeated to increase the EA quantity until the highest EAME content was obtained. By this process, 14 different concentrations of EAME ranging from 2.33 to 55.66% were produced. These results demonstrate the first successful production of EAME standards from natural oils that can be used in validation and internal quality control studies for food control analysis. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024
- …
