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Operational strategies for long-term biohydrogen production from sugarcane stillage in a continuous acidogenic packed-bed reactor
(2016-05-25)
The use of packed-bed reactors for biohydrogen production often results in performance losses in the short term because of the negative effects of operational factors, such as biomass accumulation and inadequate pH conditions. ...
Conservation laws for non-potential operators
(1999-12-01)
A study was developed in order to build a function M invariant in time, by means of Hamiltonian's formulation, taking into account the equation associated to the problem, showing that starting from this function the equation ...
Representation theorems for operators on free banach spaces of countable Type
(P-Adic Numbers, Ultrametric Analysis, and Applications, 2020)
Singular Schrödinger operators as self-adjoint extensions of N-entire operators
(American Mathematical Society, 2015-05)
We investigate the connections between Weyl–Titchmarsh– Kodaira theory for one-dimensional Schrödinger operators and the theory of n-entire operators. As our main result we find a necessary and sufficient condition for a ...
Estudo da geometria do cavaco no corte com discos abrasivos
(2001-07-01)
This paper shows a research about the study of the chip's geometry generated in the diving cut-off operation, under several cutting conditions. As a result it was possible to verify tint the cutting conditions and the type ...
Minimization of life cycle greenhouse emissions and cost in the operation of steam and power plants
(Elsevier, 2008-06)
The main objective of this work is to use environmental and economic objective functions to select the operating conditions of process plants. The operating conditions of a steam and power plant are selected to minimize ...
Tool condition monitoring of aluminum oxide grinding wheel in dressing operation using acoustic emission and neural networks
(Springer, 2015-03-01)
The grinding operation gives workpieces their final finish, minimizing surface roughness through the interaction between the abrasive grains of a tool (grinding wheel) and the workpiece. However, excessive grinding wheel ...
Multiple Ordered Solutions for a Class of Problems Involving the 1-Laplacian Operator
(2022-04-01)
In this paper, we use minimax methods, comparison arguments, and an approximation result to show the existence and multiplicity of solutions for the following class of problems: {-Δ1v=λf(v)inΩ,v≥0inΩ,v=0on∂Ω,where Ω is a ...
Additivity properties of operator ranges
(Elsevier Science Inc, 2013-12)
In the present paper we study different conditions regarding the sum of operator ranges. In particular, we find conditions on operators A, B which imply that R(A+B)=R(A)+R(B) and derive some results concerning projections.