Search results for "PERT"

Physico-Chemical Properties and Use of Waste Biomass-Derived Activated Carbons

2017

Physico-Chemical Properties and Use of Waste Biomass-Derived Activated Carbons

2017

Activated carbons are widely used in different industrial processes for example as adsorbents or as support materials. Advantageously these carbons can be prepared from residual or waste biomass materials. Different raw material type and activation procedure plays an important role in the physico-chemical characteristics of activated carbon e.g. surface area, porosity and pore distribution. In this study, activated carbon has been prepared from lignocellulosic waste materials (e.g. saw dust, lignin residue) and characterized by a number of methods. Further, adsorption properties of carbons were evaluated. Adsorption capacity of dyes and metals was high (methylene blue dye 86 % and zinc meta…

On the convergence of zero-point vibrational corrections to nuclear shieldings and shielding anisotropies towards the complete basis set limit in wat…

2016

The method and basis set dependence of zero-point vibrational corrections (ZPVCs) to nuclear magnetic resonance shielding constants and anisotropies has been investigated using water as a test system. A systematic comparison has been made using the Hartree–Fock, second-order Møller–Plesset perturbation theory (MP2), coupled cluster singles and doubles (CCSD), coupled cluster singles and doubles with perturbative triples corrections (CCSD(T)) and Kohn–Sham density functional theory with the B3LYP exchange-correlation functional methods in combination with the second-order vibrational perturbation theory (VPT2) approach for the vibrational corrections. As basis sets, the correlation consisten…

Analytical results for 2-D non-rectilinear waveguides based on a Green's function

2008

We consider the problem of wave propagation for a 2-D rectilinear optical waveguide which presents some perturbation. We construct a mathematical framework to study such a problem and prove the existence of a solution for the case of small imperfections. Our results are based on the knowledge of a Green's function for the rectilinear case.

Effect of Boron Doping on the Wear Behavior of the Growth and Nucleation Surfaces of Micro- and Nanocrystalline Diamond Films

2016

B-doped diamond has become the ultimate material for applications in the field of microelectromechanical systems (MEMS), which require both highly wear resistant and electrically conductive diamond films and microstructures. Despite the extensive research of the tribological properties of undoped diamond, to date there is very limited knowledge of the wear properties of highly B-doped diamond. Therefore, in this work a comprehensive investigation of the wear behavior of highly B-doped diamond is presented. Reciprocating sliding tests are performed on micro- and nanocrystalline diamond (MCD, NCD) films with varying B-doping levels and thicknesses. We demonstrate a linear dependency of the we…

Mercato digitale e sistema delle successioni mortis causa

2022

The work aims to examine the curvature impressed by the current order of the market and of the "algorithmic" society, centered on social network platforms, on principles and categories of classical hereditary law, putting the system of mortis causa succession into reaction with the matter of relationships and personal rights developed on the web, marked by the changes that shake the European and internal legal framework. The study is organized according to a tripartite scheme, which distinguishes the succession in contracts for the supply of digital services, from the transmission of rights on user-generated content and on the personal data of the deceased. To then keep a unity in the const…

Olfactory identification capacities in novice and wine experts

2010

International audience

The role of the agreement as a tool for management of property relations in cases of cross border marriages and civil unions/partnerships registered …

2021

The essay examines the role of the agreement as a tool for managing property relationships in crossborder marriages and registered partnerships, in light of EU Regulations 1103 and 1104 of 2016, on the property regimes of international married or registered couples. The main prerogative of such acts is the recognition of the parties? freedom to choose the court and the applicable law. The law governing the matrimonial property regimes, or the property consequences of registered partnerships, has universal scope. This agreement in the form envisaged, which is backed by the need for legal certainty and predictability of the applicable rules, means that the spouses, in family problems which ha…

Strain hardening in liquid-particle suspensions

2005

The behavior of a liquid-particle suspension induced to sheared motion was analyzed by numerical simulations. When the velocity (strain) of the suspension began to increase, its viscosity first stayed almost constant, but increased then rapidly to a clearly higher level. This increase in viscosity is shown to be related to formation of clusters of suspended particles. Clusters are shown to increase the viscosity by enhanced momentum transfer though clustered particles. This is the mechanism behind the strain-hardening phenomenon observed in small-strain experiments on liquid-particle suspensions.

Darba vides riski un strādājošo labklājība SIA “Termo – Eko”. Veselības veicināšanas pasākumi

2015

Maģistra darbs izstrādāts ar mērķi veikt SIA „Termo - Eko” darba vidē esošo risku ekspertīzi un novērtēt uzņēmuma darbinieku labklājību. Darbs sastāv no 4 daļām. Darba pirmajā daļā, balstoties uz literatūras avotiem, raksturoti darba vides risku terorētiskie aspekti un to novērtēšanas pamatprincipi.Otrajā daļā aprakstītas pētījumā izmantotās metodes,norādīti veicamie soļi, lai praktiski īstenotu metožu pielietojumu un novērtētu izvēlētos darba vides risku raksturojošos parametrus. Darba trešajā daļā aprakstīti pētījuma rezultāti, kas apliecina, ka nodarbinātie ir pakļauti vairākiem darba vides riska faktoriem – troksnis, vibrācija un dinamiskā slodze ietekmē lauka darbiniekus, bet piespiedu…