User profiles for R. Borja

Rafael Borja

- Verified email at cica.es - Cited by 16603

Ronaldo I. Borja

- Verified email at stanford.edu - Cited by 12606

Anaerobic digestion of solid organic substrates in batch mode: an overview relating to methane yields and experimental procedures

…, MA De la Rubia, V Fernández-Cegrí, R Borja - … and sustainable energy …, 2012 - Elsevier
Anaerobic digestion is considered a competitive source for the production of renewable
energy as far as efficiency and cost are concerned. To evaluate the anaerobic biodegradability …

Application of natural zeolites in anaerobic digestion processes: A review

S Montalvo, L Guerrero, R Borja, E Sánchez, Z Milán… - Applied Clay …, 2012 - Elsevier
This paper reviews the most relevant uses and applications of zeolites in anaerobic digestion
processes. The feasibility of using natural zeolites as support media for the immobilization …

Application of zeolites for biological treatment processes of solid wastes and wastewaters–A review

S Montalvo, C Huiliñir, R Borja, E Sánchez… - Bioresource …, 2020 - Elsevier
This review reports the use of zeolites in biological processes such as anaerobic digestion,
nitrification, denitrification and composting, review that has not been proposed yet. It was …

Plasticity

RI Borja - Springer Berlin Heidelberg. doi, 2013 - Springer
One of the first courses I taught at Stanford was Advanced Soil Mechanics. The course title
was accurate in the beginning, but the contents gradually became more and more about …

Biochemical methane potential (BMP) of solid organic substrates: evaluation of anaerobic biodegradability using data from an international interlaboratory study

…, MA De la Rubia, R Borja… - Journal of Chemical …, 2011 - Wiley Online Library
BACKGROUND: This paper describes results obtained for different participating research
groups in an interlaboratory study related to biochemical methane potential (BMP). In this …

Use of the water quality index and dissolved oxygen deficit as simple indicators of watersheds pollution

…, J Vicente, A Rubio, MG García, L Travieso, R Borja - Ecological …, 2007 - Elsevier
The use of the water quality index (WQI) and the dissolved oxygen deficit (D) as simple
indicators of the watersheds pollution was investigated and compared in the Municipality of Las …

Influence of inoculum to substrate ratio on the biochemical methane potential of maize in batch tests

F Raposo, CJ Banks, I Siegert, S Heaven, R Borja - Process Biochemistry, 2006 - Elsevier
Completely mixed batch reactors were used to compare the methane production from maize
at inoculum to substrate volatile solids ratios (r I/S ) of 3, 2, 1.5 and 1. The tests were carried …

[HTML][HTML] On the mechanical energy and effective stress in saturated and unsaturated porous continua

RI Borja - International Journal of Solids and Structures, 2006 - Elsevier
… dual velocity fields v s × v f : C → R 2 n sd of the solid and fluid skeletons for every macroscopic
point x. The density functions h s × h f : C → R 2 n sd and the partial stress tensors σ s × σ …

Cam-clay plasticity, part 1: implicit integration of elasto-plastic constitutive relations

RI Borja, SR Lee - Computer Methods in applied mechanics and …, 1990 - Elsevier
Two stress integration algorithms based on implicit calculation of plastic strain are implemented
and tested for the modified Cam-Clay plasticity model. The integration rules fall under …

Geological and mathematical framework for failure modes in granular rock

A Aydin, RI Borja, P Eichhubl - Journal of structural geology, 2006 - Elsevier
We synthesize all the available data on failure processes in granular rock and provide a
geological framework for the corresponding structures. We describe two categories: (1) sharp …