Güncel Gönderiler: Mühendislik Fakültesi
Toplam kayıt 568, listelenen: 521-540
-
Polymer-graphene hybrid stabilized ruthenium nanocatalysts for the dimethylamine-borane dehydrogenation at ambient conditions
(Elsevier B.V., 2019)In this work, we reported a new catalyst consistent of graphene oxide (GO) – poly(N-vinyl-2-pyrrolidone) (PVP) hybrid supported ruthenium nanoparticles and called as Ru@GO-PVP. The GO-coupled PVP nanosheets were prepared ... -
Transient turbulent flow and heat transfer phenomena in plate-fin type cross-flow heat exchanger
(2011)In this article, a transient performance of a plate-fin cross-flow heat exchanger with convergent-divergent longitudinal vortex generators is investigated. The effect of flow geometry is taken into account to analyze the ... -
Production of edible coatings with twin-nozzle electrospraying equipment and the effects on shelf-life stability of fresh-cut apple slices
(Blackwell Publishing Inc., 2018)In this study, apple slices were coated with electrospraying and dipping method for comparison of the coating efficiency, material uptake, color changes, and microstructure of coated surfaces. In electrospraying of 70% oil ... -
Effect of grape (Vitis Vinifera L.) pomace on the quality, total phenolic content and anti-radical activity of bread
(Blackwell Publishing Ltd, 2014)In this research, anti-radical activity, total phenolic content (TPC), physicochemical, textural and sensory properties of bread supplemented with 2%, 5% and 10% (w/w, flour basis) of grape pomace powder (GPP) have been ... -
Design analysis of impinging jet array heat transfer from a surface with V-shaped and convergent-divergent ribs by the taguchi method
(Taylor and Francis Ltd., 2016)In this work, the effects of the impingement plate geometry, Reynolds number, jet-plate distance-to-jet diameter ratio, and the jet diameter-to-rib height ratio on the impingement jets were investigated using the Taguchi ... -
Synthesis and characterization of terminalalkynyl-substituted unsymmetrical zinc phthalocyanine conjugated with well-defined polymers
(2014)Synthesis of unsymmetrically terminalalkynyl substituted zinc (II) phthalocyanine (ZnPc) through an efficient statistical condensation reaction with the unprotected phthalonitrile (2) is reported for the first time. Isolated ... -
Synthesis and characterization of novel tetra terminal alkynyl-substituted phthalocyanines and their star polymers via click reaction
(2013)For the first time, symmetrically tetra terminal alkynyl-substituted phthalocyanines (Pcs) were functionalized with polymers, that is, via 1,3-dipolar cycloaddition reaction. For this purpose, 4-pent-4-ynyloxy- phthalonitrile ... -
Role of adhesion in sandpaper failure progression
(Elsevier Ltd, 2016)In this study, different grit sizes of sandpapers were used under controlled rubbing experiments using a rheometer to investigate the role of adhesion in failure progression by particulate separation. Frictional shear ... -
Exergy analysis of R1234yf and R1234ze as R134a replacements in a two evaporator vapour compression refrigeration system
(Elsevier Ltd, 2015)Exergy analysis is a useful way for determining the real thermodynamic losses and optimising environmental and economic performance in the systems such as vapour compression refrigeration systems. The present study deals ... -
Reduction of ochratoxin a levels in white wine by yeast treatments
(John Wiley and Sons Inc., 2009)This paper describes the abilities of 21 yeast strains isolated from six different wine-grapes of Turkey to bind ochratoxin A (OTA). Viable (108 CFU/mL) and heat-treated yeast cells were incubated both in phosphate-buffered ... -
Theoretical and experimental investigation of wear in internal gears
(2014)Internal gears are commonly used in automotive and aeronautic industries as external sun gears of planetary mechanisms. Internal gears have some advantages such as low sliding velocities, low contact stresses, high contact ... -
Influence of epoxy addition on the thermal, mechanical, and dielectrical properties of polycyanurate films
(John Wiley and Sons Inc., 2018)In the study, polycyanurate (PCN)/epoxy resin (ER) blends are prepared to enhance the physical properties of cyanate ester resins. The effects of curing schedule and blend composition on their thermal, mechanical, and ... -
Non-enzymatic sensing of glucose using a glassy carbon electrode modified with gold nanoparticles coated with polyethyleneimine and 3-aminophenylboronic acid
(Springer-Verlag Wien, 2016)A non-enzymatic electrochemical method was developed for sensing glucose by using a glassy carbon electrode modified with 3-aminophenylboronic acid (APBA) immobilized on polyethyleneimine (PEI)-coated gold nanoparticles. ... -
2-Isopropenyl-2-oxazoline: A versatile monomer for functionalization of polymers obtained via RAFT
(2012)2-Isopropenyl-2-oxazoline (iPOx) was polymerized for the first time via a controlled radical polymerization technique. Reversible addition-fragmentation chain transfer (RAFT) polymerization utilizing a dithiobenzoate-based ... -
Changes in hydrolysable and condensed tannins of pomegranate (Punica granatum L., cv. Hicaznar) juices from sacs and whole fruits during production and their relation with antioxidant activity
(Academic Press, 2014)The effects of clarification and pasteurization on hydrolysable tannins (HTs), condensed tannins (CTs) and antioxidant activities of pomegranate juices extracted from whole fruits and sacs were investigated. Tannin contents ... -
Loss of sulfur dioxide and changes in some chemical properties of Malatya apricots (Prunus armeniaca L.) during sulfuring and drying
(John Wiley and Sons Ltd, 2014)BACKGROUND: This study was conducted to determine the differences in some analytical properties of four apricot cultivars and to determine the changes in these analytical properties during sulfuring and sun-drying. RESULTS: ... -
The fate of mycotoxins during thermal food processing
(2009)Mycotoxins are considered to be heat-stable molecules. Because of their toxic effects, information about their stability in thermal processes and potential inactivation procedures is needed. Numerous reports in the literature ... -
N-O tethered carbenoid cyclopropanation facilitates the synthesis of a functionalized cyclopropyl-fused pyrrolidine
(2013)We report a facile approach to a cyclopropyl-fused pyrrolidine, which contains four stereogenic centers, by employing the N-O tethered carbenoid methodology. The synthesis was facilitated by the development of a direct ... -
Light-scattering determination of visco-elastic and electro-optic parameters of azo and anthraquinone dye-doped liquid crystal molecules and consistent neural network empirical physical formula construction for scattering intensities
(2011)In this paper, we achieved two aims. Firstly, laser light-scattering intensities in methyl red (MR) azo and disperse red (DR) anthraquinone dye-doped nematic liquid crystal (NLC) molecules were measured versus scattering ... -
Synthesis and photophysicochemical studies of poly(ethylene glycol) conjugated symmetrical and asymmetrical zinc phthalocyanines
(Elsevier, 2015)Synthesis and characterization of poly(ethylene glycol) conjugated symmetrical and asymmetrical zinc phthalocyanines (ZnPcs) is described. Copper (I) catalyzed azide-alkyne cycloaddition (CuAAC) click reaction between azide ...
