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- Maria M Rodríguez, Alexander H Gómez, Carolyn L Abitbol, Jayanthi J Chandar, Shahnaz Duara, Gastón E Zilleruelo
- Pediatric and developmental pathology : the…
- 2004

Until now oligonephropathy to indicate "too few nephrons" has been associated with intrauterine growth restriction and experimentally induced abnormalities of renal development. The purpose of this study was to determine whether there is evidence of abnormal postnatal glomerulogenesis in extremely low birth weight preterm infants. Renal autopsy tissue was… (More)

We obtain normal forms for symmetric and reversible polynomial automorphisms (polynomial maps that have polynomial inverses) of the complex and real planes. Our normal forms are based on the Hénon normal form of Friedland and Milnor. We restrict ourselves to the case where the symmetries and reversors are also polynomial automorphisms. We show that each… (More)

- A. Gómez
- 2002

Planar polynomial automorphisms are polynomial maps of the plane whose inverse is also a polynomial map. A map is reversible if it is conjugate to its inverse. Here we obtain a normal form for automorphisms that are reversible by an involution that is also in the group of polynomial automorphisms. This form is a composition of a sequence of generalized… (More)

- Maria M. Rodriguez, Alexander Gomez, Carolyn Abitbol, Jayanthi Chandar, Brenda Montané, Gastón Zilleruelo
- Pediatric Nephrology
- 2004

Children born with very low birth weight have a decreased nephron number. Low nephron mass is associated with adult hypertension, proteinuria, and diabetes mellitus. The histomorphometry and radial glomerular count (RGC) of a total nephrectomy from a child with renal disease associated with extreme prematurity was compared with the kidney from a full-term… (More)

- P BLAQUIER, S W HOOBLER, J SCHROEDER, A GOMEZ, T KREULEN
- The American journal of physiology
- 1962

A technique is described and demonstrated to measure the size of spherical particles of known index of refraction by laser light scattering with an accuracy of better than 1%. This technique entails imaging the angular scattering intensity onto a photodiode array and applying a fast Fourier transform to the array output to obtain a frequency and phase… (More)

- A. Gómez, J. D. Meiss
- 2002

Volume-preserving maps arise from the study of the flow of incompressible fluids or magnetic fields. If a volumepreserving map has a continuous symmetry, such as a rotational symmetry, then it has an invariant and the orbits are confined to surfaces. More generally, the orbits could densely cover regions with nonzero volume. Here we construct maps that have… (More)

- Alexander Gómez, Augusto Salazar, Jesus Francisco Vargas Bonilla
- Ecological Informatics
- 2017

Non intrusive monitoring of animals in the wild is possible using camera trapping framework, which uses cameras triggered by sensors to take a burst of images of animals in their habitat. However camera trapping framework produces a high volume of data (in the order on thousands or millions of images), which must be analyzed by a human expert. In this work,… (More)

- Alper Atamt¨urk, G Omez, A Gómez
- 2016

We describe new convex valid inequalities for p-order conic mixedinteger optimization, which includes the important second order conic mixedinteger optimization as a special case. The inequalities are based on the polymatroid inequalities over binary variables for the diagonal case. We prove that the proposed inequalities completely describe the convex hull… (More)