Materials Literature
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Foils from oxo-degradable polypropylene and poly(lactic acid) in various ratios were prepared, using a single screw extruder and a three-roll calender. The samples of the blend were subjected to aging in natural conditions and to biodegradation in composting conditions. The intensity of biodegradation of the various c…
Synthesis and characterization of new Pt(II) complexes of cyclohexanespiro-5-(2-thiohydantoin) (L1) and cyclohepta-nespiro-5-(2-thiohydantoin) (L2) are discussed. The new complexes are studied by elemental analysis, IR and 1H NMR spectroscopy. The free ligands are investigated by UV-Vis, IR, 1H NMR, 13C NMR and Raman…
Two Eu(III) complexes were synthesized using 4-acylpyrazolone ligands: 3-methyl-4-(4-methylbenzoyl)-1-phenylpyrazol-5-one (HPMMBP) and 3-methyl-1-phenyl-4-(4-phenylbenzoyl)-pyrazol-5-one (HPPMBP). The composition of the obtained solid complexes was determined as Eu(PMMBP) 3 .C 2 H 5 OH and Eu(PPMBP) 3 .3H 2 O based on…
The reproducibility of the superficial morphology and corrosion parameters of AA2024 alloy in 0.6 M NaCl solution under different preliminary treatment procedures have been studied. It was achieved by applying optical metallographic microscopy (OMM), atomic force microscopy (AFM) and electrochemical methods as linear…
This work reports data on the synthesis of glasses in three selected compositions of each of the systems Na2O/BaO/ TiO2/SiO2/B2O3/Al2O3 and Na2O/BaO/TiO2/SiO2/B2O3/Fe2O3/Al2O3 and the preparation of glass-ceramics by applying appropriate time-temperature regimes. Crystallization of a large volume fraction of cubic BaT…
Several types of glass-ceramics in the CaO - MgO - SiO2 system are shown to be bioactive, biocompatible and exhibiting various advantages for bone regeneration. A polyphase calcium-magnesium-silicate glass-ceramics is prepared by the sol-gel method including a two-step thermal treatment procedure aiming to investigate…
The structure of many Eu3+ doped Bi2O3-B2O3-WO3-Al2O3 glasses of a different composition is studied using infrared spectroscopic technique (IR). It is found that distorted BiO6 (of a band at 480 cm-1), BO3 (of bands at 1390, 1230, 620 cm-1), BO4 (of a band at 1020 cm-1) and WO4 polyhedra (of a band at 880 cm-1) are th…
In the paper the results from the study of the kinetic of joint electrodeposition of Ni and Co in Ni-Co alloy system are reported. It is found that the co-deposition of Ni and Co in Ni-Co alloy system in slightly acidic citrate electrolyte occurs under combined diffusion-kinetic control with a typical mechanism of nuc…
This work presents an attempt to apply the integral-balance approach to diffusion models with fading memories expressed by weakly singular kernels. It demonstrates how three integration techniques (heat-balance integral method, double-integration method, and frozen front approach) work with a general parabolic profile…
This paper is a review presenting some new trends for photostabilization of polymers by application of polymerizable stabilizers, so that chemically or ``self-stabilized`` polymers can be obtained. The derivatives of 2-(2-hydroxyphenyl)-2Hbenzotriazole (HBT) and 2,2,6,6-tetramethylpiperidine (HALS) are among the most…
Modeling of the thermo physical properties of the material in the foaming zone of an installation for continuous band of foam glass manufacture is presented. The initial physical assumptions concerning the implementation of the process are pointed out. The changes of properties like density, thermal conductivity, and…
Graphene is very attractive material which has high conductivity and good electrical properties. By using glass as a matrix to incorporate the graphene, it is possible to improve the conductivity and the electrical properties of the glass. In our previous study we synthesized composite material by adding of reduced gr…
Proton exchange membrane fuel cells (PEMFCs) are promising clear and efficient new energy sources. An excellent control system is a normal working prerequisite for maintaining a fuel cell system in correct operating conditions. Conventional controllers could not satisfy the high performance to obtain the acceptable re…
The kinetics of independent and joined deposition of Ni and Co in citrate electrolyte in the presence of three types of additives: saccharine (SCH), urotropine (URT) and gelatine (GLT), is examined. Comparison is made between the chemical composition, the current cathodic efficiency (CCE) and the morphology of Ni-Co a…
A leucite glass-ceramic is disclosed which is prepared from a glass comprising: about 66.8 to about 71.9 mol % of Si02, about 8.5 to about 10.3 mol % of A1203, about 9.5 to about 12.8 mol % of K2O, about 0.5 to about 4.0 mol % of CaO, about 0 to about 3.0 mol % of TiO2, about 1.9 to about 4.0 mol % of Na2O, about 0.1…
Where ligaments meet bone, there exists a transitional region of heterogeneous tissue that is graded from hard, highly mineralized fibrocartilage at the bone interface to un-mineralized soft tissue at the ligament. This structure, called the enthesis, disperses stress concentrations that arise due to the vastly differ…
Hücrelerin kontrolsüz çoğalması sonucu ortaya çıkan ve doku türüne bağlı olarak birçok farklı çeşidi bulunan bir hastalık grubu olan kanserin tedavisine yönelik en önemli hedeflerden birisi kanser dokusunun özellikle tanı sonrası cerrahi operasyon öncesinde etkin bir şekilde görüntülenmesidir. Kuantum Noktacıkları (KN…
List of figures and tables Figures I.1 An ecosocial map 8 I.2 Material and distributive perspectives 11 I.3 Understanding the ecosocial 14 2.1 Types of capital 1 39 2.2 Types of capital 2 39 2.3 Commodification and decommodification 1 46 2.4 Commodification and decommodification 2 46 4.1 Dimensions of time 79 4.2 Soci…
In this paper, we explain how we have fitted Lee‘s 5-phase and 6-phase model code to analyze the current waveforms of 6 small plasma focus machines (below 500 Joules) working in deuterium gas medium. Using the information from the code fitted to these current waveforms, the scaling laws for these small-energy machines…
ith the publication of In Ballast to the White Sea, Pat McCarthy and Chris Ackerley invite us to a rare and most pleasurable literary event.They unveil a portrait of Malcolm Lowry and his work that most of us have never imagined, revealing the restless literary energy, the play of mind, and the political sensibilities…