Manuel Gonzalez Reyes - Academia.edu (original) (raw)
Papers by Manuel Gonzalez Reyes
![Research paper thumbnail of Synthesis and characterisation of rhodium(I) complexes containing the dihydrobis(pyrazolyl)borate ligands [H2B(pz′)2]. The X-ray structures of Bp*Rh(C2H4)2 and BpRh(PPh3)2 (Bp = H2B(pz)2; Bp* = H2B(3,5-Me2-pz)2](https://attachments.academia-assets.com/54526904/thumbnails/1.jpg)
](Inorganica Chimica Acta, 1998
Revista Espanola De Derecho Constitucional, 1994
Un buen número de juristas, entre los que, para mi honra, me cuento, hemos dedicado una colección... more Un buen número de juristas, entre los que, para mi honra, me cuento, hemos dedicado una colección de estudios en homenaje a Eduardo García de Enterría con motivo de su jubilación en la cátedra de Derecho Administrativo de la Universidad Complutense. La obra, coordinada y bien presentada por Sebastián Martín-Retortillo, reúne las colaboraciones de más de un centenar de autores, cultivadores no sólo del Derecho Administrativo (aunque éstos sean mayoría, como es lógico), sino también de las demás disciplinas jurídicas. Todos ellos componen una muestra, creo que suficientemente significativa, de la cultura jurídica española, una cultura que tanto debe a quien con esta obra celebramos.
Journal of the American College of Cardiology, 2010
Journal of Mathematical Analysis and Applications, 2014
ABSTRACT We study the existence of an inverse integrating factor for a class of systems, in gener... more ABSTRACT We study the existence of an inverse integrating factor for a class of systems, in general non-integrable, whose lowest-degree quasi-homogeneous term is a Hamiltonian system and its Hamiltonian function only has simple factors over C[x,y]C[x,y].
Differential Equations and Dynamical Systems
ABSTRACT
Journal of Computational and Applied Mathematics
Newton diagram of a planar vector field allows to determine whether a singular point of an analyt... more Newton diagram of a planar vector field allows to determine whether a singular point of an analytic system is a monodromic singular point. We solve the monodromy problem for the nilpotent systems and we apply our method to a wide family of systems with a degenerate singular point, so-called generalized nilpotent cubic systems.
Agriculture, Ecosystems & Environment, 2015
Advances in Mathematics, 2014
A skew Calabi-Yau algebra is a generalization of a Calabi-Yau algebra which allows for a non-triv... more A skew Calabi-Yau algebra is a generalization of a Calabi-Yau algebra which allows for a non-trivial Nakayama automorphism. We prove three homological identities about the Nakayama automorphism and give several applications. The identities we prove show (i) how the Nakayama automorphism of a smash product algebra A#H is related to the Nakayama automorphisms of a graded skew Calabi-Yau algebra A and a finite-dimensional Hopf algebra H that acts on it; (ii) how the Nakayama automorphism of a graded twist of A is related to the Nakayama automorphism of A; and (iii) that the Nakayama automorphism of a skew Calabi-Yau algebra A has trivial homological determinant in case A is noetherian, connected graded, and Koszul.
(In 2 Volumes), 2000
ABSTRACT
The American journal of clinical nutrition, 2006
Obesity is an important contributor to many cardiovascular risk factors and has been associated w... more Obesity is an important contributor to many cardiovascular risk factors and has been associated with abnormalities in cardiac contractile function. Causes of impaired contractile function are not fully understood and may include an oversupply of substrates. We tested the hypothesis that metabolic dysregulation may adversely influence cardiac function. Specifically, we examined the effects of plasma free fatty acids and insulin sensitivity on left ventricular function in patients with clinically severe obesity. We measured metabolic and cardiac variables in 64 obese patients [body mass index (BMI; in kg/m(2)) > 35], including 2-D complete echocardiogram with M-mode and tissue Doppler imaging, anthropometric measurements, and analysis of blood chemistries. The median (25th and 75th percentile) age and BMI were 46 y (36, 53 y) and 51.5 (42.5, 56.5), respectively. The prevalence of diabetes, hypertension, and insulin resistance were 38%, 53%, and 90%, respectively. Plasma free fatty ...
Contemporary Mathematics, 2014
There are two fundamental obstructions to representing noncommutative rings via sheaves. First, t... more There are two fundamental obstructions to representing noncommutative rings via sheaves. First, there is no subcanonical coverage on the opposite of the category of rings that includes all covering families in the big Zariski site. Second, there is no contravariant functor F from the category of rings to the category of ringed categories whose composite with the global sections functor is naturally isomorphic to the identity, such that F restricts to the Zariski spectrum functor Spec on the category of commutative rings (in a compatible way with the natural isomorphism). Both of these no-go results are proved by restricting attention to matrix rings.
Nonlinear Analysis: Theory, Methods & Applications, 2011
The Newton diagram and the lowest-degree quasi-homogeneous terms of an analytic planar vector fie... more The Newton diagram and the lowest-degree quasi-homogeneous terms of an analytic planar vector field allow us to determine whether an isolated singular point of the vector field is monodromic or has a characteristic trajectory.
Journal of the American College of Cardiology, 2010
Journal of the American College of Cardiology, 2011
... Authors: Cezar Iliescu, Manuel Reyes, Simon B. Abi Aad, Jose Banchs, Elie Mouhayar, Monika Le... more ... Authors: Cezar Iliescu, Manuel Reyes, Simon B. Abi Aad, Jose Banchs, Elie Mouhayar, Monika Leja, Iyad Daher, Wamique Yusuf, Jean-Bernard Durand, MD Anderson Cancer Center, Houston, TX, The University of Texas Medical School at Houston, Houston, TX ...
IEEE Transactions on Power Electronics, 2000
In the last few years, restrictive grid codes have arisen to ensure the performance and stability... more In the last few years, restrictive grid codes have arisen to ensure the performance and stability of electrical networks, which experience a massive integration of renewable energy sources and distributed generation systems that are normally connected to the grid through electronic power converters. In these codes, the injection of positive- and negative-sequence current components becomes necessary for fulfilling, among others,
IEEE Transactions on Industrial Electronics, 2000
Multilevel cascaded H-bridge (CHB) converters have been presented as a good solution for high-pow... more Multilevel cascaded H-bridge (CHB) converters have been presented as a good solution for high-power applications. In this way, several control and modulation techniques have been proposed for this power converter topology. In this paper, the steady-state power balance in the cells of a single-phase two-cell CHB is studied. The capability to be supplied with active power from the grid or to deliver active power to the grid in each cell is analyzed according to the dc-link voltages and the desired ac output voltage value. The limits of the maximum and minimum input active powers for a stable operation of the CHB are addressed. Simulation results are shown to validate the presented analysis.
The American Journal of Medicine, 2008
The study objective was to define muscle metabolic and cardiovascular changes after surgical inte... more The study objective was to define muscle metabolic and cardiovascular changes after surgical intervention in clinically severe obese patients. METHODS: Obesity is a state of metabolic dysregulation that can lead to maladaptive changes in heart and skeletal muscle, including insulin resistance and heart failure. In a prospective longitudinal study, 43 consecutive patients underwent metabolic profiling, skeletal muscle biopsies, and resting echocardiograms at baseline and 3 and 9 months after bariatric surgery. RESULTS: Body mass index decreased (mean changes, 95% confidence interval [CI]): 7.7 kg/m 2 (95% CI, 6.70-8.89) at 3 months and 5.6 kg/m 2 (95% CI, 4.45-6.80; P Ͻ .0001) at 9 months after surgery, with restoration of insulin sensitivity and decreases in plasma leptin at the same time points. Concurrent with these changes were dramatic decreases in skeletal muscle transcript levels of stearoyl coenzyme-A desaturase and pyruvate dehydrogenase kinase-4 at 3 and 9 months (P Ͻ .0001, for both) and a significant decrease in peroxisome proliferation activated receptor-␣-regulated genes at 9 months. Left ventricular relaxation impairment, assessed by tissue Doppler imaging, normalized 9 months after surgery. CONCLUSION: Weight loss results in the reversal of systemic and muscle metabolic derangements and is accompanied by a normalization of left ventricular diastolic function.
¿La juventud ha perdido el respeto a los profesores? Hoy el adolescente vive en una crisis contin... more ¿La juventud ha perdido el respeto a los profesores? Hoy el adolescente vive en una crisis continua, es inseguro, en búsqueda continua de su identidad, es idealista, rebelde, utilizando esta rebeldía como una necesidad de diferenciarse, de ser originales, pero no creo que haya perdido el respeto sino como lo dijo una profesora de las tantas que observé, el alumno hoy pide a gritos que se le pongan límites y realmente es lo que falta dentro de las aulas. La autoridad docente parece haberse destruido o está pasando por una grave crisis. Pero ¿cuáles podrían ser las causas? ¿A qué se debe la pérdida de autoridad? ¿Qué sucedió?
Inorganica Chimica Acta, 1998
Revista Espanola De Derecho Constitucional, 1994
Un buen número de juristas, entre los que, para mi honra, me cuento, hemos dedicado una colección... more Un buen número de juristas, entre los que, para mi honra, me cuento, hemos dedicado una colección de estudios en homenaje a Eduardo García de Enterría con motivo de su jubilación en la cátedra de Derecho Administrativo de la Universidad Complutense. La obra, coordinada y bien presentada por Sebastián Martín-Retortillo, reúne las colaboraciones de más de un centenar de autores, cultivadores no sólo del Derecho Administrativo (aunque éstos sean mayoría, como es lógico), sino también de las demás disciplinas jurídicas. Todos ellos componen una muestra, creo que suficientemente significativa, de la cultura jurídica española, una cultura que tanto debe a quien con esta obra celebramos.
Journal of the American College of Cardiology, 2010
Journal of Mathematical Analysis and Applications, 2014
ABSTRACT We study the existence of an inverse integrating factor for a class of systems, in gener... more ABSTRACT We study the existence of an inverse integrating factor for a class of systems, in general non-integrable, whose lowest-degree quasi-homogeneous term is a Hamiltonian system and its Hamiltonian function only has simple factors over C[x,y]C[x,y].
Differential Equations and Dynamical Systems
ABSTRACT
Journal of Computational and Applied Mathematics
Newton diagram of a planar vector field allows to determine whether a singular point of an analyt... more Newton diagram of a planar vector field allows to determine whether a singular point of an analytic system is a monodromic singular point. We solve the monodromy problem for the nilpotent systems and we apply our method to a wide family of systems with a degenerate singular point, so-called generalized nilpotent cubic systems.
Agriculture, Ecosystems & Environment, 2015
Advances in Mathematics, 2014
A skew Calabi-Yau algebra is a generalization of a Calabi-Yau algebra which allows for a non-triv... more A skew Calabi-Yau algebra is a generalization of a Calabi-Yau algebra which allows for a non-trivial Nakayama automorphism. We prove three homological identities about the Nakayama automorphism and give several applications. The identities we prove show (i) how the Nakayama automorphism of a smash product algebra A#H is related to the Nakayama automorphisms of a graded skew Calabi-Yau algebra A and a finite-dimensional Hopf algebra H that acts on it; (ii) how the Nakayama automorphism of a graded twist of A is related to the Nakayama automorphism of A; and (iii) that the Nakayama automorphism of a skew Calabi-Yau algebra A has trivial homological determinant in case A is noetherian, connected graded, and Koszul.
(In 2 Volumes), 2000
ABSTRACT
The American journal of clinical nutrition, 2006
Obesity is an important contributor to many cardiovascular risk factors and has been associated w... more Obesity is an important contributor to many cardiovascular risk factors and has been associated with abnormalities in cardiac contractile function. Causes of impaired contractile function are not fully understood and may include an oversupply of substrates. We tested the hypothesis that metabolic dysregulation may adversely influence cardiac function. Specifically, we examined the effects of plasma free fatty acids and insulin sensitivity on left ventricular function in patients with clinically severe obesity. We measured metabolic and cardiac variables in 64 obese patients [body mass index (BMI; in kg/m(2)) > 35], including 2-D complete echocardiogram with M-mode and tissue Doppler imaging, anthropometric measurements, and analysis of blood chemistries. The median (25th and 75th percentile) age and BMI were 46 y (36, 53 y) and 51.5 (42.5, 56.5), respectively. The prevalence of diabetes, hypertension, and insulin resistance were 38%, 53%, and 90%, respectively. Plasma free fatty ...
Contemporary Mathematics, 2014
There are two fundamental obstructions to representing noncommutative rings via sheaves. First, t... more There are two fundamental obstructions to representing noncommutative rings via sheaves. First, there is no subcanonical coverage on the opposite of the category of rings that includes all covering families in the big Zariski site. Second, there is no contravariant functor F from the category of rings to the category of ringed categories whose composite with the global sections functor is naturally isomorphic to the identity, such that F restricts to the Zariski spectrum functor Spec on the category of commutative rings (in a compatible way with the natural isomorphism). Both of these no-go results are proved by restricting attention to matrix rings.
Nonlinear Analysis: Theory, Methods & Applications, 2011
The Newton diagram and the lowest-degree quasi-homogeneous terms of an analytic planar vector fie... more The Newton diagram and the lowest-degree quasi-homogeneous terms of an analytic planar vector field allow us to determine whether an isolated singular point of the vector field is monodromic or has a characteristic trajectory.
Journal of the American College of Cardiology, 2010
Journal of the American College of Cardiology, 2011
... Authors: Cezar Iliescu, Manuel Reyes, Simon B. Abi Aad, Jose Banchs, Elie Mouhayar, Monika Le... more ... Authors: Cezar Iliescu, Manuel Reyes, Simon B. Abi Aad, Jose Banchs, Elie Mouhayar, Monika Leja, Iyad Daher, Wamique Yusuf, Jean-Bernard Durand, MD Anderson Cancer Center, Houston, TX, The University of Texas Medical School at Houston, Houston, TX ...
IEEE Transactions on Power Electronics, 2000
In the last few years, restrictive grid codes have arisen to ensure the performance and stability... more In the last few years, restrictive grid codes have arisen to ensure the performance and stability of electrical networks, which experience a massive integration of renewable energy sources and distributed generation systems that are normally connected to the grid through electronic power converters. In these codes, the injection of positive- and negative-sequence current components becomes necessary for fulfilling, among others,
IEEE Transactions on Industrial Electronics, 2000
Multilevel cascaded H-bridge (CHB) converters have been presented as a good solution for high-pow... more Multilevel cascaded H-bridge (CHB) converters have been presented as a good solution for high-power applications. In this way, several control and modulation techniques have been proposed for this power converter topology. In this paper, the steady-state power balance in the cells of a single-phase two-cell CHB is studied. The capability to be supplied with active power from the grid or to deliver active power to the grid in each cell is analyzed according to the dc-link voltages and the desired ac output voltage value. The limits of the maximum and minimum input active powers for a stable operation of the CHB are addressed. Simulation results are shown to validate the presented analysis.
The American Journal of Medicine, 2008
The study objective was to define muscle metabolic and cardiovascular changes after surgical inte... more The study objective was to define muscle metabolic and cardiovascular changes after surgical intervention in clinically severe obese patients. METHODS: Obesity is a state of metabolic dysregulation that can lead to maladaptive changes in heart and skeletal muscle, including insulin resistance and heart failure. In a prospective longitudinal study, 43 consecutive patients underwent metabolic profiling, skeletal muscle biopsies, and resting echocardiograms at baseline and 3 and 9 months after bariatric surgery. RESULTS: Body mass index decreased (mean changes, 95% confidence interval [CI]): 7.7 kg/m 2 (95% CI, 6.70-8.89) at 3 months and 5.6 kg/m 2 (95% CI, 4.45-6.80; P Ͻ .0001) at 9 months after surgery, with restoration of insulin sensitivity and decreases in plasma leptin at the same time points. Concurrent with these changes were dramatic decreases in skeletal muscle transcript levels of stearoyl coenzyme-A desaturase and pyruvate dehydrogenase kinase-4 at 3 and 9 months (P Ͻ .0001, for both) and a significant decrease in peroxisome proliferation activated receptor-␣-regulated genes at 9 months. Left ventricular relaxation impairment, assessed by tissue Doppler imaging, normalized 9 months after surgery. CONCLUSION: Weight loss results in the reversal of systemic and muscle metabolic derangements and is accompanied by a normalization of left ventricular diastolic function.
¿La juventud ha perdido el respeto a los profesores? Hoy el adolescente vive en una crisis contin... more ¿La juventud ha perdido el respeto a los profesores? Hoy el adolescente vive en una crisis continua, es inseguro, en búsqueda continua de su identidad, es idealista, rebelde, utilizando esta rebeldía como una necesidad de diferenciarse, de ser originales, pero no creo que haya perdido el respeto sino como lo dijo una profesora de las tantas que observé, el alumno hoy pide a gritos que se le pongan límites y realmente es lo que falta dentro de las aulas. La autoridad docente parece haberse destruido o está pasando por una grave crisis. Pero ¿cuáles podrían ser las causas? ¿A qué se debe la pérdida de autoridad? ¿Qué sucedió?