Materials Literature
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Although numerous robots have been developed inspired by animal locomotion, they could not reproduce adaptive and resilient behavior of real animals. To tackle this problem, we adopted ophiuroids as our model. In our previous work, we focused on the locomotion of an ophiuroid whose arms were shortened or removed to in…
In recent years, biological fields such as regenerative medicine require continuous non-invasive transportation of large population of cell in culture media. Conventional methods achieved this purpose by using different kinds of pump. However, no systems have developed which are capable of investigating the invasivene…
Actually platinum is still the most common metal catalyst in both anode and cathode fuel cell. In spite of the many attempts made in the last decade to develop non-Pt based catalysts for low temperature air cathodes, Pt remains the catalyst of choice, at least for acid based fuel cells. The situation in alkaline elect…
We observed the condensation process of submicron-scale droplets on silicon (100) surface by using environmental scanning electron microscope. We found that the condensation growth of a submicron-sized droplet is classified into two modes. In the first mode, the contact angle is smaller than the macroscopic contact an…
Phase field model is known to be very powerful in describing the complex pattern formation of the interface in non-equilibrium state, such as growth of dendritic crystals. In this study, the effects of anisotropy of the crystals on Mullins-Sekerka instability in growth of solid-liquid interface were investigated numer…
In order to clarify the characteristics and mechanism of rubber balloon extinguishment, the extinguishing experiments have been performed. The extinguishing target was a methane-air diffusion flame formed over a porous burner. Physically-acting inert gases were used. In this study, extinguishing probabilities have bee…
Three novel coordination polymers such as 2HBN, 3HBN and 4HBN, respectively, were obtained from the reaction of nickel nitrate with the sodium salts of the 2-hydroxybenzoic acid, 3-hydroxybenzoic acid and 4-hydroxybenzoic acid. All of these polymers show solubility neither in water nor in the common organic solvents.…
A two-dimensional comprehensive CFD model for anode-supported planner solid oxide fuel cells (SOFCs) is developed to study the performance the cells. The electrode microstructures of the anodes are quantified using FIB-SEM measurements and implemented to the simulation. The model is verified from a short stack experim…
In present study Hydroalcoholic extracts of Parkinsonia aculeata L. seeds and Ananas comosus L. fruits were examined to assess for effectiveness against the rotenone induced Parkinson symptoms. Hydroalcoholic extracts of both the plants were prepared. Formulation was prepared using suitable suspending agent and suspen…
An in-situ measurement of the background radiation level was carried out on the main campus of Ibrahim Badamasi Babangida University, Lapai, Nigeria. Geiger-Mueller tube-based environmental radiation dosimeter was used for the measurement. A total of 15 point was surveyed across the campus for background environmental…
Diplomová práce se zabývá degradabilními polymery, přesněji polyolefiny, které obsahují sloţku škrobu. Škrob urychluje mikrobiální rozklad, a tím zkracuje dobu degradace polymerní směsi v ţivotním prostředí. Testované byly směsi nejčastěji pouţívaných polyolefinů (polyethylen a polypropylen) s 2%, 5% a 10% koncentrací…
We propose the thermal-mode spectroscopy (TMS), a new experimental technique for thermal conductivity of minute specimen. The TMS method is based on the excitation and detection of "thermal modes" using an optical pump-probe technique. All existing methods are based on "heat transport", and they are unsuitable for min…
Ultra-high performance concrete (UHPC) is characterized by outstanding compressive strength of more than 150 MPa, double of normal concrete. Furthermore UHPC has a very dense structure which leads to an extremely low permeability for fluids resulting in with a very high durability. Further structural improvement can b…
Instigating effective neural regeneration in the injured adult central nervous system (CNS: brain and spinal cord) following injury remains a distant and challenging goal. After CNS injury, the formation of cystic cavities results in substantial tissue defects and a growth inhibitory injury gap that restricts the pote…
Phosphorescent materials have attracted much attention due to their promising applications in sensors, display, optical imaging and drug delivery. Extensive studies have been only reported on the syntheses of trinuclear gold(I) azolate complexes such as imidazolate, pyrazolate and carbeniete. On the other hand, liquid…
Eμβολοφόρeς Μηχανές Ι (E) [ΤEΙ ΧΑΛΚΙΔΑΣ, ΣΧΟΛΗ ΤEΧΝΟΛΟΓΙΚΩΝ EΦΑΡΜΟΓΩΝ, ΤΜΗΜΑ ΜΗΧΑΝΟΛΟΓΙΑΣ (Μeταφέρθηκe σe άλλο Ίδρυμα)]
EΠΙΣΤΗΜΗ ΚΑΙ ΤEΧΝΙΚΗ ΥΛΙΚΩΝ [EΘΝΙΚΟ ΜEΤΣΟΒΙΟ ΠΟΛΥΤEΧΝEΙΟ, ΣΧΟΛΗ ΧΗΜΙΚΩΝ ΜΗΧΑΝΙΚΩΝ, ΤΜΗΜΑ ΧΗΜΙΚΩΝ ΜΗΧΑΝΙΚΩΝ]
This paper carries the numerical analysis on dynamic behaviour of a tubular Solid Oxide Fuel Cell (SOFC), particularly relating the operational parameter of the fuel utilization (FU) given as a ratio of fuel consumption to its supply. The transient response of the voltage to the change in the current was studied in se…
This paper presents experimental research concerning the behavior on cutting by turning of steels for magnets NdFeB based. In this context, cutting by rough turning of steels magnet neodymium and boron ferrite based were performed. Turning processing with the values of the cutting parameters recommended by European Un…
The article discusses approaches to the formation of the limit prices of aircraft with using of elements of economic-mathematical modeling. Theoretical and practical aspects of development of methods of solving economic problems in the implementation of the mechanism of formation of effective innovation-stimulating pr…