Materials Literature
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Heat shock proteins (Hsps), produced by organisms under high temperature stimulation, play important roles in protein folding, translocation, and refolding/degradation. In this study, we investigated the expression level of the GrpE Hsp gene Hsp845 of Psychrobacter sp. G under different temperature and salinity stress…
Capacitor ferroelectric structures are the basis of many modern microelectronic devices, including non-volatile memory, piezoelectric micro-actuators, sensors etc. Miniaturization of such devices requires a reduction in the ferroelectric layer thickness, which reduces the major characteristics of ferroelectric structu…
Bu calismada, sabit hava giris hizi ve sicakliginda alabaligin kurutma davranisi deneysel olarak incelenmistir. Hava giris hizi 1.5 m/s ve sicakligi 53 °C olarak secilmistir. Deneyler %28-42’lik bagil nem araliginda gerceklestirilmistir. Baliklar tek parca, bes parca ve on parca olarak kurutulmustur. Baligin nem iceri…
Bu calismada, laboratuvar olcekli sabit yatak yakma sisteminde plastik atik biokutle ve linyitten hazirlanan ikili ve uclu karisim peletlerinin yanma davranisi incelenmistir. Plastik atik olarak market posetleri, biokutle kaynagi olarak mobilya fabrikasi atik tozu ve linyit olarak da Bingol Karliova linyiti kullanildi…
Recientemente se verificó que Didymosphenia forma proliferaciones masivas en Patagonia. En Argentina se ha esparcido a cinco provincias en un corto tiempo. En este trabajo, analizamos datos morfológicos y morfométricos de especímenes recolectados en la provincia del Chubut, Argentina y los comparamos con otras especie…
Bu çalışmada Kümelenme Modelinin işletmeler üzerindeki etkinliğinin ortaya konması amaçlanmıştır. Bu amaçla Porter’ın elmas modeli kullanılmış ve nicel araştırma yöntemlerinden anket çalışması yapılarak küme üyesi işletmelere ait veriler elde edilmiştir. Elde edilen verilere öncelikle güvenilirlik analizi yapılmış, so…
In this study, the (1-benzofurane-2-yl)-3-oxo-prop-1-en-1-yl]-2-methoxyphenyl 2-methyl acrylate monomer were synthesized from the acylation reaction of this compound with methacryloyl chloride that commercially purchased. Free radicalic or atom transfer radical polymerization methods were used for preparation of copol…
Bu çalışmada, polimer esaslı yatak malzemelerinin tribolojik özelliklerinin araştırılması amaçlanmıştır.Seçilen polimer yatak malzemelerinin (Kestamid, Kestamid/HS, Kestoil, Kestlub, Ulpolen 1000(UHMWPE)) 3 farklı hız (50, 75 ve 100 d/d), yük (15, 25, 35 N) ve sürede (5, 10, 15 dk) incelenereksürtünme kuvvetleri, sürt…
Used lubricating oil has been the subject of much debate over recent years in Ethiopia. The amount of lubricating oils disposed annually in the country is considerably large. This amount of waste lubricating oil has a significant impact on both economic and environmental aspects. In this research Acid-clay technology…
Steam generator tubes has anti-vibration bars in U-bend area for supporting tubes and avoiding unacceptable flow induced vibration or micro vibration induced wear. This article describes anti-vibration bar shift of 55/19B model steam generator and using eddy current inspection to investigate the respective anti-vibrat…
Abstract In the previous work [1] it was shown that strain hardening had considerable impact on the hardness of Inconel 718. In order to verify the weakening of the material associated with the damage mechanism in the tested material, the hardness tests were performed on the stretched specimen which was subsequently h…
Abstract The paper proposes a method of calculating the maximum displacement in the aircraft metal structure repaired by CPBR (bonded composite patch repair). The calculations were made based on specimens. The specimens were prepared according to the current requirements used in aviation. The 2024-T3 alloy metal sheet…
(Occurrence of Ceratium furcoides (Levander) Langhans 1925 (Dinophyceae: Ceratiaceae) in Two Reservoirs of the Capibaribe Watershed Located in Semiarid Region). This study reported the first occurrence of Ceratium furcoides (Levander) Langhans 1925 species in two eutrophic in the Capibaribe river basin (Pernambuco-Bra…
The main objective of this paper is to present a comparison of the corrosion inhibiting effect of thiourea and THAM (tri(hydroxymethyl)aminomethane) on carbon steel samples immersed in calcium chloride solutions. The testing has shown that to inhibit the corrosive action of the calcium chloride solution, the thiourea…
In this study, friction stir spot welding (FSSW) is applied to join the TiAl6V4 titanium alloy with 1.5 mm thickness and then the effect of rotational speed and tool dwell time on microstructure and mechanical properties is investigated. In this regard, the speed of the tool rotation was considered as 800, 1000, and 1…
En los últimos años la ingeniería ha empezado a tratar más sobre el estudio de materiales orgánicos como las fibras vegetales que se encuentran en abundancia en distintos lugares del mundo, extraídas de plantas como la cabuya, abacá, paja toquilla, algodón, seda, bambú, balsa, caucho, mimbre, etc. Estas fibras en la a…
We elucidate few critical facts about the lithium superionic conductor (Li10GeP2S12) and few other compounds of the same family as the electrolyte in Li-ion cells. The dimensionality of diffusion process and existence of ‘structural’ lithiums are not well understood in this material. From the ab-initio MD simulations,…
The regularities of microcrystalline cellulose (MCC) hydrogenation in a water medium at 185 C in the presence of NiCu / SiO 2 and NiCuMo / SiO 2 catalysts were studied.
The chemical and thermal stability of the sulfide-functionalized (R-S-R' type) sorbents based on SBA-15 mesoporous mesostructured silica have been investigated by physico-chemical methods. It has been found that the material treatment in acid, neutral and alkaline conditions at the boiling temperature result in insign…
Ce sujet de recherche vise le procédé de soudage par friction malaxage (FSW). L’étude menée se focalise sur la corrélation entre les paramètres du procédé (vitesse d’avance et fréquence de rotation de l’outil) et les caractéristiques mécaniques et microstructurales des tôles d’alliage d’aluminium 5083 H111 de six mill…