of Borsuk-Ulam
Um homomorfismo índice associado à ações livres de Zp.
... theorems of Borsuk- Ulam, Kakutani - Yamabe - Yujobˆo and Dyson, ...tipo Borsuk-Ulam, Yang introduziu nesse trabalho uma ferramenta dada por um certo homo- morfismo ν (X,T ) : H n (X, T ...
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Estimativas ótimas para certos teoremas generalizados de Borsuk-Ulam e Ljusternik-Schnirelmann.
... Theorems of Borsuk-Ulam and Ljusternik-Schnirelmann have many generalizations, among which we point out that given by ...the Borsuk-Ulam Theorem by replacing the Z 2 -free action on the ...
85
Um homomorfismo índice associado à ações livres de grupos abelianos finitos
... theorems of Borsuk- Ulam, Yang, Kakutani - Yamabe - Yujobô and Dyson”, I - Annals of ...tipo Borsuk-Ulam, Yang introduziu nesse trabalho uma ferramenta dada por um certo ...
60
Uma nota sobre o teorema de Borsuk-Ulam
... Uma nota sobre o teorema de Borsuk-Ulam / José Roberto Ribeiro Júnior.. Dissertação (Mestrado) -- Universidade Federal de São Carlos, 2011.[r] ...
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Effect of heat treatment parameters on the properties of low-alloy cast steel with microadditions of vanadium
... range of 100-200nm, present as single objects or as clusters, characterised by different shapes (oval and oblong), sizes and chemical compositions, fine-dispersed precipitates of carbides in the size range ...
4
The modification process of AlSi21CuNi silumin and its effect on change of mechanical properties of the alloy
... Essence of modification of silumins boils to change of form or size of silicon crystals present as eutectic or primary ...resistance of hypereutectoid silumins result from their ...
4
Operating characteristics of turbine mixers based on the analysis of power demand of the mixer’s drive
... Optimisation of the turbine mixer’s performance during the preparations of the sand mix still remains an important issue as this mixer type is now in widespread ...techniques of the system sand ...
4
Effect of Multipoint Sequential Water Mist Cooling of Casting Die on Microstructure and Mechanical Properties of AlSi11 Alloy
... beginning of crystallization of silumin, ...cooling of the other zones, which will no longer supply the zone 1 with the liquid metal,, but instead accelerate the process of cooling of ...
6
The analysis of solidification process of ferritic-austenitic cast steel
... One of the most common defects leading to the rejection of faulty castings made of duplex cast steel is hot ...temperature of solidifying casting is close to the equilibrium solidus ...range ...
4
Effect of water glass modification with nanoparticles of zinc oxide on selected physical and chemical properties of binder and mechanical properties of sand mixture
... wetting of the surface of the quartz grains (Fig. 3). Changes of contact angle in time are characterised by high values of both the initial contact angle θ 0 (about 45 ...
4
The Influence of Small Amounts of Aluminium on the Spheroidization of Cast Iron with Cerium Mischmetal
... influence of aluminium in the amount from about ...structure of cast iron treated with cerium mischmetal and subjected to graphitizing modification with 75% ...composed of the specially prepared grey ...
6
Evaluation of susceptibility of the ZRE1 alloy to hot cracking in conditions of forced strain
... moulds of huge dimensional castings, high-pressure castings and precise ...castings of magnesium alloys defects or inconsistencies often appear (like casting misrun, porosities and cracks) particularly in ...
6
Determination Of Longevity Of Teeth In Buckets Of Loading Equipment In Coal Mines - A Case Study
... effects of machine scale, wear surface structure of the rolls, grinding pressures and rolls speed, gap settings, feed size distribution and moisture content for a range of ...wear of the ...
11
Selection of the temperature of casting the bronzes to plaster moulds
... Bronzes after melting were overheated to the temperature suita- bly: 1200 °C, 1180 °C, 1160 °C and 1140 °C, and then the mould was casted - probe TDAg and plaster mould with thin-walled, so- called casts test slats about ...
6
The application of optical measurements for the determination of accuracy of gear wheels casts manufactured in the RT/RP process
... stage of manufacturing the casting mould was the creation of a gear wheel 3D-CAD ...removal of the gear wheel model and the gating system from the mould ...
4
Effect Of Shape And Plan Configuration On Seismic Response Of Structure
... Lot of work has been reported by many researchers who worked to study the effect of structures with irregular plan and ...effects of earthquake on irregular shaped building in plan, this paper ...
5
An Analysis of Student Evaluations of Native and Non Native Korean Foreign Language Teachers
... type of complaint from students was un- questionably related to excessive lecturing on the part of the native TA (about 70% of negative comments related to excessive lecturing, not enough time to ...
20
The Impact of the Expansion of the Bolsa Familia Program on the Time Allocation of Youths And Their Parents Lia Chitolina Miguel Nathan Foguel Naercio Menezes-Filho
... increase of more than 11 percentage points in the probability of attending ...fear of losing access to the program, which means that it may take time to come back to it in case of harder times ...
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Modification of water glass with colloidal slurries of metal oxides
... measurement of wettability, 4x8 mm quartz plates were used, whose surfaces were prepared in an identical ...repeatability of the results. Each of the quartz samples was used ...modification of ...
4
Roughness of surface of vacuum castings prepared in plaster moulds
... made of two types of ...Temperatures of the mould were 500 and 600°C for bronzes and 200 and 300°C for aluminum ...use of Hommelwerke Tester T1000. The average arithmetic deviation of ...
6