Materials Literature
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Bu çalışma kapsamında Finlandiya’dan temin edilen doğal vollastonitin, yüksek performanslı harcın (YPH) dayanım ve durabilite özellikleri üzerindeki etkileri araştırılmıştır. YPH üretim aşamasında su/bağlayıcı oranı sabit tutularak, vollastonit minerali %3, %6, %9, %12 ve %15 oranlarında karışıma eklenmiştir. Ayrıca y…
Abstract In this work, we develop a thermo-viscoplasticity model for body-centered cubic (BCC) metals based on a two-temperature theory of nonequilibrium thermodynamics. Modeling the plastic deformation here involves two subsystems, viz., a configurational subsystem related to grain growth, dislocation motion, and a k…
Bu çalışmada vakumlu infiltrasyon yöntemi kullanılarak alüminyum matrisli, % 0.5 GNP (Nano Grafen Plaka) tozları ile %5-%10 - %20 TiB2 (Titanyum diborid) tozları birlikte takviye edilerek hibrit kompozit malzemeler üretilmiştir. Daha sonra, kompozit malzemelerin SEM ile mikroyapıları incelemeleri yapılmış ve porozite…
This chapter presents progress on the bioactivity of chitin and its derivatives, such as soluble chitin oligomers, chitosan, and chitosan derivatives, like sulfonated and carboxymethylated chitosan, in plant protection and growth stimulation. Chitosan is produced by deacetylation of chitin. Water-soluble chitin oligom…
Particle size and hardness of Al-10%wt.Ti powders due to the influence of ball diameter have been carried out using mechanical alloying techniques. The milling device used consisted of a Fritsch Pulverisette-5 planetary type ball mill with the rotational speed of about 360 rpm and balls size of 10, 15 and 20 mm. The m…
With constant emergencies and severe consequences of various central nervous system (CNS)-related diseases, drug delivery gradually reveals its significance in the modern medicine. The biggest challenge of drug delivery resides in the selection of appropriate drug delivery carrier. 21th century witnessed the prosperou…
A madeira é um material de construção com elevado nível de sustentabilidade. É um material renovável que captura e retém CO2 durante todo seu ciclo de vida. Devido a esta peculiaridade é importante que o dimensionamento, quando utilizado como material estrutural, seja o mais preciso possível. Assim será possível utili…
Bu çalışmada, ham ve kimyasal aktivasyon uygulanan çam talaşı kullanılarak Bazik Sarı 28 tekstil boyar maddesinin sulu çözeltiden adsorpsiyonu çalışılmıştır. Temas süresi, adsorbent madde dozajı, başlangıç boya konsantrasyonu ve kimyasal aktivasyonun verime etkisi belirlenen koşullarda çalışılmıştır. Kimyasal aktivasy…
When considering a Li-intercalated hexagonal boron nitride bilayer (Li-hBN), the vertex corrections of electron–phonon interaction cannot be omitted. This is evidenced by the very high value of the ratio λωD/εF≈ 0.46, where λ is the electron–phonon coupling constant, ωDis the Debye frequency, and εFrepresents the Ferm…
Numerous formulae are available for predicting the scabbing limit and perforation limit thicknesses subjected to impact loading, but no formula has yet been proposed for estimating the scabbing depth, which is the damaged depth at the rear face when the back of the concrete panel is peeled. In this paper, a new energy…
Abstract Epoxy-based porous monoliths are prepared by chemically induced phase separation. The roles played by N,N-dimethylformamide (DMF) in both curing and phase separation kinetics are studied in detail. It is found that the addition of DMF not only changes the speed of phase separation, but the way. Meanwhile, the…
A ground-wall insulation structure optimization method based on a composite material for a stator bar is proposed in this paper. The trend regularity of the nonuniform coefficient of the electric field for a composite dielectric fillet electrode structure is established with the finite element method, and a composite…
Results of the development of a method for immobilizing nanosized palladium into an electrochemically synthesized polyaniline (PAn) electrically conductive porous matrix to create a sensitive element of an ignition sensor are presented. Two methods of manufacturing a sensitive element in the form of an electrode are i…
We report here the experimental and computational results of a high‐pressure study (up to 40 GPa) of yttrium borohydride. During compression in neon pressure medium the cage‐like RuO3 structure of α‐Y(BH4)3 is stabilized by the formation of the inclusion compound with this chemically inert gas. Ne atoms fill the voids…
Abstract The poly(para‐phenylene‐co‐3,4′‐oxydiphenylene terephthalamide) (PPODTA) fiber is one of the high strength organic fibers, and it has been reported that the PPODTA fiber has superior fatigue resistance. The high strength fibers are used in the applications to utilize their high mechanical properties in genera…
Techniques for determining the impact mechanical response of laminated composites in tension, compression and interlaminar shear are briefly described. Stress-strain curves for a plain weave carbon epoxy laminate under both tensile and compressive impact are compared with those obtained at a quasi-static rate and inte…
Five new -conjugated chromophores derived from acrylic acid and acrylonitrile were synthesized and their thermal and photophysical behaviors were analyzed. They were designed and synthesized through Knoevenagel condensations between arylacetylenebenzaldehydes and a methylene group activated from cyanoacetic and maloni…
We map the lattice orientation of graphene grains (domains) larger than a centimeter by measuring the orientation of cracks in a WS 2 film grown on graphene that had been previously grown by chemical vapor deposition (CVD) on Cu foils. A WO 3 film was first deposited on the graphene film and then converted to a WS 2 f…
Investigation results of the swelling behavior of three ferritic steels under conditions of simultaneous irradiation with 1.8 MeV Cr3+ ions and gases (helium or hydrogen) at peak swelling temperatures and doses to 50 and 200 dpa are presented. It is shown that the behavior of swelling depends on the concentration of h…
Bu çalışmada vakum (düşük basınçta) fermantasyonun glutensiz ekmeğin kalite kriterleri üzerine etkisi değerlendirilmiştir. Vakum fermantasyon parametrelerinin (vakum basıncı ve fermantasyon süresi) optimizasyonu için tam faktöriyel deney tasarımı tabanlı istenirlik fonksiyonu yaklaşımı kullanılmıştır. Faktörler üzerin…