Search results for: S Sandoval

Items from 1 to 20 out of 39 results

article

Predicting parameters of Weibull probability density function for diametric distributions in A. melanoxylon, E. camaldulensis and E. nitens bioenergy plantation

S. Sandoval, J. Cancino, E. Acuña, R. Rubilar

Dendrobiology > 2021 > 86

article

There is no ‘African American Physiology’: the fallacy of racial essentialism

J. Tsai, J. P. Cerdeña, R. Khazanchi, E. Lindo, more

Journal of Internal Medicine > 288 > 3 > 368 - 370

article

Positive asymmetric information in volatile environments: The black market dollar and sovereign bond yields in Venezuela

Julio Sarmiento, Edgardo Cayon, María Collazos, Juan S. Sandoval

Research in International Business and Finance > 2017 > 41 > C > 547-555

We test the informational efficiency of Venezuelan USD sovereign bond yields when the black market exchange-rate premium (BMERP) changes.We use a non-parametric, asymmetric, Granger causality test to test our hypothesis.We find that the bond market with less than or equal to 5 years of maturity seems to be efficient when good news is released on the BMERP. However, this market is not informationally...

article

Modeling heat and moisture transport in steam-cured mortar: Application to AASHTO Type VI beams

E. Hernández-Bautista, S. Sandoval-Torres, P.F. de J. Cano-Barrita, D.P. Bentz

Construction and Building Materials > 2017 > 151 > C > 186-195

During steam curing of concrete, temperature and moisture gradients are developed, which are difficult to measure experimentally and can adversely affect the durability of concrete. In this research, a model of cement hydration coupled to moisture and heat transport was used to simulate the process of steam curing of mortars with water-to-cement (w/c) ratios by mass of 0.30 and 0.45, considering natural...

article

A Highly Linear Temperature Sensor Using GaN-on-SiC Heterojunction Diode for High Power Applications

S. Madhusoodhanan, S. Sandoval, Y. Zhao, M. E. Ware, more

IEEE Electron Device Letters > 2017 > 38 > 8 > 1105 - 1108

Silicon carbide (SiC) power devices have been commercialized up to 1.7 kV with operating temperatures up to 573 K. The temperature limitations of SiC devices are generally derived from limitations in packaging and a lack of information on safe operating temperature regimes. Therefore, it is highly desirable to develop reliable temperature sensing techniques that can better take advantage of the SiC...

article

Economic effects of a reservoir re-operation policy in the Rio Grande/Bravo for integrated human and environmental water management

J. Pablo Ortiz-Partida, B.A. Lane, S. Sandoval-Solis

Journal of Hydrology: Regional Studies > 2016 > 8 > C > 130-144

The study region is the Big Bend Reach of the Rio Grande/Bravo, from Luis L. Leon reservoir in the Rio Conchos to Amistad reservoir in the Rio Grande/Bravo mainstem. This reach is part of the Rio Grande trans-boundary river basin between United States and Mexico, an area of recognized environmental and socioeconomic significance by both countries.A central challenge of Integrated Water Resources Management...

article

O010 Post-natal mechanisms of human hematopoietic stem cell self-renewal

V. Bundy, S. Sandoval, C. Seet, C. Parekh, more

Annals of Allergy, Asthma & Immunology > 2016 > 117 > 5(S) > S4

article

Numerical simulation of heat and mass transport during hydration of Portland cement mortar in semi-adiabatic and steam curing conditions

E. Hernandez-Bautista, D.P. Bentz, S. Sandoval-Torres, P.F. de J. Cano-Barrita

Cement and Concrete Composites > 2016 > 69 > C > 38-48

A model that describes hydration and heat-mass transport in Portland cement mortar during steam curing was developed. The hydration reactions are described by a maturity function that uses the equivalent age concept, coupled to a heat and mass balance. The thermal conductivity and specific heat of mortar with water-to-cement mass ratio of 0.30 was measured during hydration, using the Transient Plane...

article

Mesenchymal stem cell-derived exosomes from different sources selectively promote neuritic outgrowth

M.A. Lopez-Verrilli, A. Caviedes, A. Cabrera, S. Sandoval, more

Neuroscience > 2016 > 320 > Complete > 129-139

Mesenchymal stem cells (MSCs) obtained from bone marrow (BM) have been shown to promote neuronal growth and survival. However, the comparative effects of MSCs of different sources, including menstrual MSCs (MenSCs), BM, umbilical cord and chorion stem cells on neurite outgrowth have not yet been explored. Moreover, the modulatory effects of MSCs may be mediated by paracrine mechanisms, i.e. by molecules...

article

Environmental Flows in a Human‐Dominated System: Integrated Water Management Strategies for the Rio Grande/Bravo Basin

B. A. Lane, S. Sandoval‐Solis, E. C. Porse

River Research and Applications > 31 > 9 > 1053 - 1065

Water management in the transboundary Rio Grande/Bravo (RGB) Basin, shared by the US and Mexico, is complicated by extreme hydrologic variability, overallocation, and international treaty obligations. Heavy regulation of the RGB has degraded binationally protected ecosystems along the Big Bend Reach of the RGB. This study addresses the need for integrated water management in Big Bend by developing...

article

Enhanced Charge Capacity in Iridium Oxide-Graphene Oxide Hybrids

N.M. Carretero, M.P. Lichtenstein, E. Pérez, S. Sandoval, more

Electrochimica Acta > 2015 > 157 > C > 369-377

Hybrid materials based on iridium oxide and graphene oxide, and graphite oxide as reference, are reported as biocompatible electrodes for the neural system. An electrodeposition process based on dynamic potential sweeps, allows an optimal adherence of coatings to the platinum substrate. The resulting electrochemical properties evidence an order of magnitude increase in charge capacity with respect...

article

The impact of hospital-acquired infections with multidrug-resistant bacteria in an oncology intensive care unit

P. Cornejo-Juárez, D. Vilar-Compte, C. Pérez-Jiménez, S.A. Ñamendys-Silva, more

International Journal of Infectious Diseases > 2015 > 31 > C > 31-34

To describe overall site-specific hospital-acquired infection (HAI) rates and to describe the microbiological and antibiotic resistance profiles of infecting pathogens, together with their impact on multidrug-resistant (MDR) bacteria-associated mortality.We conducted a 5-year retrospective descriptive study of HAI in patients in the intensive care unit (ICU) of a cancer center in Mexico from January...

article

Reconciling Hydropower and Environmental Water Uses in the Leishui River Basin

X. S. Ai, S. Sandoval‐Solis, H. E. Dahlke, B. A. Lane

River Research and Applications > 31 > 2 > 181 - 192

Today's water systems require integrated water resource management to improve the water supply for conflicting water uses. This research explores alternative policies to improve the water supply for two conflicting uses, hydropower and environmental, using the Leishui River basin and Dongjiang reservoir as a case study. First, the natural flow regime prior to reservoir construction (pre‐1992) was...

article

Associations of HLA-A, HLA-B and HLA-C alleles frequency with prevalence of herpes simplex virus infections and diseases across global populations: Implication for the development of an universal CD8+ T-cell epitope-based vaccine

Sarah Samandary, Hédia Kridane-Miledi, Jacqueline S. Sandoval, Zareen Choudhury, more

Human Immunology > 2014 > 75 > 8 > 715-729

A significant portion of the world’s population is infected with herpes simplex virus type 1 and/or type 2 (HSV-1 and/or HSV-2), that cause a wide range of diseases including genital herpes, oro-facial herpes, and the potentially blinding ocular herpes. While the global prevalence and distribution of HSV-1 and HSV-2 infections cannot be exactly established, the general trends indicate that: (i) HSV-1...

article

Treatment with pirfenidone for two years decreases fibrosis, cytokine levels and enhances CB2 gene expression in patients with chronic hepatitis C

Lucia Flores-Contreras, Ana S Sandoval-Rodríguez, Mayra G Mena-Enriquez, Silvia Lucano-Landeros, more

BMC Gastroenterology > 2014 > 14 > 1 > 1-11

Background The aim of this study was to assess whether two-years treatment with Pirfenidone influences necroinflammation, fibrosis and steatosis, serum levels of TGF-β1, IL-6, TNF-α and CB1 and CB2 gene expression, in patients with chronic hepatitis C (CHC). Methods Twenty-eight patients out of 34 with CHC virus infection were enrolled in the study and received Pirfenidone (1200 mg/day)...

article

Effects of Vasectomy on Seminal Plasma Alkaline Phosphatase in Male Alpacas (Vicugña pacos)

LK Pearson, AJ Campbell, S Sandoval, A Tibary

Reproduction in Domestic Animals > 48 > 6 > 995 - 1000

Azoospermia is a common finding in male alpacas which present for infertility. The challenge is to differentiate azoospermia of testicular origin from non‐testicular origin. In several species, alkaline phosphatase (AP) concentrations in seminal plasma have been used as a diagnostic marker of contributions of the testis and epididymis to the ejaculate. The purpose of this study was to determine whether...

article

Receptor-Interacting Serine/Threonine-Protein Kinase 3 (RIP-3) Expression in Normal and Burned Skin

A.J. Singer, A.S. Reddy, S.A. McClain, A. Abraham, more

Annals of Emergency Medicine > 2013 > 62 > 4(S) > S30

article

True Density and Apparent Density During the Drying Process for Vegetables and Fruits: A Review

J. Rodríguez‐Ramírez, L. Méndez‐Lagunas, A. López‐Ortiz, S. Sandoval Torres

Journal of Food Science > 77 > 12 > R146 - R154

Abstract: This review presents the concepts involved in determining the density of foodstuffs, and summarizes the volumetric determination techniques used to calculate true density and apparent density in foodstuffs exposed to the drying process. The behavior of density with respect to moisture content (X) and drying temperature (T) is presented and explained with a basis in changes in structure,...

article

Mefloquine effects on ventral tegmental area dopamine and GABA neuron inhibition: A physiologic role for connexin‐36 GAP junctions

David W. Allison, Rebecca S. Wilcox, Kyle L. Ellefsen, Caitlin E. Askew, more

Synapse > 65 > 8 > 804 - 813

Connexin‐36 (Cx36) gap junctions (GJs) appear to be involved in the synchronization of GABA interneurons in many brain areas. We have previously identified a population of Cx36‐connected ventral tegmental area (VTA) GABA neurons that may regulate mesolimbic dopamine (DA) neurotransmission, a system implicated in reward from both natural behaviors and drugs of abuse. The aim of this study was to determine...

chapter

Hybrid Scalar/Vector Quantization of Mel-Frequency Cepstral Coefficients for Low Bit-Rate Coding of Speech

L E Boucheron, P L D Leon, S Sandoval

2011 Data Compression Conference > 103 - 112

2011 Data Compression Conference (DCC)

In this paper, we propose a low bit-rate speech codec based on a hybrid scalar/vector quantization of the mel-frequency cepstral coefficients (MFCCs). We begin by showing that if a high-resolution mel-frequency cepstrum (MFC) is computed, good-quality speech reconstruction is possible from the MFCCs despite the lack of explicit phase information. By evaluating the contribution toward speech quality...

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INFONA - science communication portal

Search results for: S Sandoval

Predicting parameters of Weibull probability density function for diametric distributions in A. melanoxylon, E. camaldulensis and E. nitens bioenergy plantation

There is no ‘African American Physiology’: the fallacy of racial essentialism

Positive asymmetric information in volatile environments: The black market dollar and sovereign bond yields in Venezuela

Modeling heat and moisture transport in steam-cured mortar: Application to AASHTO Type VI beams

A Highly Linear Temperature Sensor Using GaN-on-SiC Heterojunction Diode for High Power Applications

Economic effects of a reservoir re-operation policy in the Rio Grande/Bravo for integrated human and environmental water management

O010 Post-natal mechanisms of human hematopoietic stem cell self-renewal

Numerical simulation of heat and mass transport during hydration of Portland cement mortar in semi-adiabatic and steam curing conditions

Mesenchymal stem cell-derived exosomes from different sources selectively promote neuritic outgrowth

Environmental Flows in a Human‐Dominated System: Integrated Water Management Strategies for the Rio Grande/Bravo Basin

Enhanced Charge Capacity in Iridium Oxide-Graphene Oxide Hybrids

The impact of hospital-acquired infections with multidrug-resistant bacteria in an oncology intensive care unit

Reconciling Hydropower and Environmental Water Uses in the Leishui River Basin

Associations of HLA-A, HLA-B and HLA-C alleles frequency with prevalence of herpes simplex virus infections and diseases across global populations: Implication for the development of an universal CD8+ T-cell epitope-based vaccine

Treatment with pirfenidone for two years decreases fibrosis, cytokine levels and enhances CB2 gene expression in patients with chronic hepatitis C

Effects of Vasectomy on Seminal Plasma Alkaline Phosphatase in Male Alpacas (Vicugña pacos)

Receptor-Interacting Serine/Threonine-Protein Kinase 3 (RIP-3) Expression in Normal and Burned Skin

True Density and Apparent Density During the Drying Process for Vegetables and Fruits: A Review

Mefloquine effects on ventral tegmental area dopamine and GABA neuron inhibition: A physiologic role for connexin‐36 GAP junctions

Hybrid Scalar/Vector Quantization of Mel-Frequency Cepstral Coefficients for Low Bit-Rate Coding of Speech

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