sol–gel auto-combustion is a unique combination of the combustion and the chemical gelation processes. in this work, nanosize (d) powders with compositions of znfe2o4 were synthesized by sol–gel combustion method. the puffy, porous brown powders as-combusted was calcined at the temperature of 750–1000◦c for 4 h. these powders are characterized by x-ray diffraction and scanning electron microsco...

Context. A rocky planet is formed out of the agglomeration around 10 40 cosmic dust particles. As aggregates grow by coagulation, their number decreases. But until they have grown to hundreds kilometres, still remains well above particles a computer model can handle directly. The growth from micrometres planetesimal-sized objects therefore has be modelled using statistical methods, often size d...

Smoothed Particle Hydrodynamics SPH is a meshless Lagrangian parti cle method for solving a system of hydrodynamic equations for compressible uids SPH is especially suited for problems with free boundaries a commonplace situation in as trophysics Rather than solving the equations on a grid the equations are solved at the positions of the so called particles each representing a mass packet with ...

-A Monte Carlo technique was developed suitable for investigating rarefied gas dynamics problems. The procedure is based on the 'test particle' method. The discontinuous function frequently employed for describing the target molecules' velocity distribution is replaced here by a continuous analytic function, the form of which is prescribed prior to the calculations. This modification simplifies...

To evaluate the real radiological and economic consequences of future dismantling of particle accelerators, up to now insufficient information was available in literature or even at the individual accelerator facilities themselves. DG ENV/C3 of the European Commission launched a project with focus on gathering quantitative and scientifically sound data on the number of accelerators in the EU, o...

Many real-world domains are relational in nature, consisting of a set of objects related to each other in complex ways. Matrix factorization is an effective method in relationship prediction, However, traditional matrix factorization link prediction methods can only be used for non-negative matrix. In this paper, a generalized framework, itelliPrediction, is presented that is able to deal with ...