Juan J. Urrutia, Roberto Sosa, John H. Kennell, Marshall H. Klaus,
... Central AmericaSearch for more papers by this authorRoberto Sosa, Roberto Sosa Department of Neonarology, All Children's Hosprial, ... Central AmericaSearch for more papers by this authorRoberto Sosa, Roberto Sosa Department of Neonarology, All Children's Hosprial, St ...
Tópico(s): Child Nutrition and Water Access
1980 - Wiley | Novartis Foundation symposium
Richard S. Beach, Edgar R. Garcia, Roberto Sosa, Robert A. Good,
... D.; Garcia, Edgar R. A.R.N.P.; Sosa, Roberto M.D.; Good, Robert A. M.D., Ph. ...
Tópico(s): Blood disorders and treatments
1991 - Elsevier BV | Pediatric Infectious Disease
Alfredo Álvarez Amador, Pedro A. Valdés‐Sosa, Roberto D. Pascual‐Marqui, Liliana García, Rolando Biscay Lirio, Jorge Bosch‐Bayard,
Two different descriptions of EEG maturation are compared: a broad-band spectral parameters (BBSPs) model and a recently developed xi-alpha (ξα) model. 'Developmental equations' were obtained for both parameter sets using 1 min, eyes closed EEG sample from 165 normal children (5–12 years old). At each age, the ξα parameter set described the average spectrum more closely than the BBSP developmental equations. Furthermore, a more detailed picture of changes of spectral shape with age is. possible with ...
Tópico(s): Neural dynamics and brain function
1989 - Elsevier BV | Electroencephalography and Clinical Neurophysiology
John C. Markowitz, Sapana R. Patel, Iván C. Balán, Michelle Bell, Carlos Blanco, Maria Yellow Horse Brave Heart, Stephanie Buttacavoli Sosa, Roberto Lewis‐Fernández,
Article AbstractBackground: Spanish-speaking individuals comprise a growing percentage of the United States population. They have greater difficulty than most in accessing and remaining in psychiatric treatments, including psychotherapy, their stated preference. The literature on cultural competence in treating Hispanic patients provides few details of psychotherapeutic adaptations. Objective: This article, based on interpersonal psychotherapy (IPT) supervision for a low-socioeconomic sample of monolingual ...
Tópico(s): Digital Mental Health Interventions
2008 - Physicians Postgraduate Press, Inc. | The Journal of Clinical Psychiatry
Aurelia Tubaro, Anna Giangaspero, Silvio Sosa, Roberto Negri, Gianpaolo Grassi, S. Casano, R. Della Loggia, Giovanni Appendino,
A selection of seven phytocannabinoids representative of the major structural types of classic cannabinoids and their corresponding cannabivarins was investigated for in vivo topical anti-inflammatory activity in the Croton oil mouse ear dermatitis assay. Differences in the terpenoid moiety were far more important for anti-inflammatory activity than those at the C-3 alkyl residue, suggesting the involvement not only of cannabinoid receptors, but also of other inflammatory end-points targeted by ...
Tópico(s): Ion Channels and Receptors
2010 - Elsevier BV | Fitoterapia
Claudia A. Silva‐Segundo, Mariela Brito-Chavarria, Eduardo F. Balart, Irene de los A. Barriga-Sosa, Roberto Rojas-Esquivel, Marı́a Inés Roldán, Gopal Murugan, Francisco J. García‐De León,
Tópico(s): Marine Bivalve and Aquaculture Studies
2010 - Springer Science+Business Media | Reviews in Fish Biology and Fisheries
Silvio Sosa, Roberto Pace, Anna Bornanciny, Paolo Morazzoni, Antonella Riva, Aurelia Tubaro, R. Della Loggia,
Abstract Three preparations of Hypericum perforatum L. (a hydroalcoholic extract, a lipophilic extract and an ethylacetic fraction) and the pure compounds hypericin, adhyperforin, amentoflavone, hyperoside, isoquercitrin, hyperforin dicyclohexylammonium (DHCA) salt and dicyclohexylamine were evaluated for their topical anti-inflammatory activity. H. perforatum preparations provoked a dose-dependent reduction of Croton-oil-induced ear oedema in mice, showing the following rank order of activity: lipophilic ...
Tópico(s): Phytochemistry and Biological Activities
2007 - Oxford University Press | Journal of Pharmacy and Pharmacology
Arnulfo Blanco‐García, Cuauhtémoc Sáenz‐Romero, Carlos Martorell, Pedro Alvarado-Sosa, Roberto Lindig‐Cisneros,
Nurse-plant effects have been used as an effective reforestation and restoration strategy, and mulching has also effectively ameliorated soil-adverse conditions. However, use of nurse plants is limited by the presence of suitable nurse species before trees are planted, and use of mulching depends on availability of appropriate materials. The effects of Lupinus elegans as a nurse plant and pine-bark mulch were tested on three conifer species: Pinus montezumae, Pinus pseudostrobus, and Abies religiosa. ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2011 - Elsevier BV | Ecological Engineering
Bertha Michel, Carlos Lozano‐Flores, Miriam Rodríguez‐Sosa, Roberto Coria, Jorge Ramı́rez, Antonio Peña,
Abstract In S. cerevisiae, K + transport relies principally on two structurally related membrane proteins, known as Trk1p and Trk2p. Direct involvement in cation movements has been demonstrated for Trk1p, which is a high‐affinity K + transporter. Initially described as a low‐affinity K + transporter, Trk2p seems to play a minor role in K + transport, since its activity is only apparent under very specific conditions, such as in a Δ sin3 background. Here we show that growth of a Δ trk1 Δ sin3 double mutant, ...
Tópico(s): Plant Stress Responses and Tolerance
2006 - Wiley | Yeast
J.L. Pérez–Aparicio, Horacio Sosa, Roberto Palma,
The interactions of electro-elastic fields with voids and cracks contained in a piezoelectric solid are addressed both in closed form and numerically. The numerical algorithm, based on finite elements, is used to generate results that compare very well with available analytical solutions. Through the numerical results, it is shown that the simplified impermeable and the exact electric boundary conditions lead to the same result when the hole is open, but differ significantly when the hole is rather ...
Tópico(s): Composite Material Mechanics
2006 - Elsevier BV | International Journal of Solids and Structures
Rita De Gasperi, Miguel A. Gama Sosa, Roberto Patarca, Stefania Battistini, MICHELE R. LAMOREUX, Srinivasa Raghavan, Neil W. Kowall, KAREN HARRINGTON SMITH, Mary A Fletcher, Edwin H. Kolodny,
Peripheral nervous system involvement in the acquired immunodeficiency syndrome (AIDS) can take the form of an acute or chronic inflammatory demyelinating polyneuropathy, polyradiculopathy, mononeuropathy multiplex, or autonomic neuropathy. There is no widely held consensus on the etiology of PNS or other neurological complications associated with HIV infection. We report here that PNS disease in HIV-infected individuals is associated with intrathecal synthesis of an antibody directed against sulfatide, ...
Tópico(s): Glycosylation and Glycoproteins Research
1996 - Mary Ann Liebert, Inc. | AIDS Research and Human Retroviruses
J. Alberto Escobar, J Jesús Sosa, Roberto Gómez,
A method for locating and estimating structural damage in two and three-dimensional analytical models of buildings is presented. Damage is defined in terms of changes in elements stiffness. Since the geometrical transformation matrix used to obtain the condensed stiffness matrix of a structure can be estimated, for the damaged state, from the one corresponding to the non-damaged state with an iterative scheme, it is possible to detect structural damage by comparing changes on structural dynamic ...
Tópico(s): Infrastructure Maintenance and Monitoring
2004 - Elsevier BV | Computers & Structures
Constantino Méndez‐Bértolo, Stephan Moratti, Rafael Toledano, Fernando López-Sosa, Roberto Martínez‐Álvarez, Yee H Mah, Patrik Vuilleumier, António Gil‐Nagel, Bryan A. Strange,
Tópico(s): Face Recognition and Perception
2016 - Nature Portfolio | Nature Neuroscience
Nan Zhang, Ahmadreza Hedayat, Héctor Gelber Bolaños Sosa, Roberto Pedro Huamani Bernal, Néstor Tupa, Isaac Yanqui Morales, Reynaldo Sabino Canahua Loza,
Mine tailings (MTs) are ore residuals after valuable metals were extracted during mineral processing, which can be reused to produce the geopolymer concrete for construction and building applications, to mitigate the storage, economic, and environmental pressures. However, the pure MTs did not have enough reactive aluminum or amorphous aluminosilicates for better geopolymerization effects. It is necessary to add other materials as the additional aluminum source and amorphous additives to change the ...
Tópico(s): Recycling and utilization of industrial and municipal waste in materials production
2021 - Elsevier BV | Construction and Building Materials
Nan Zhang, Ahmadreza Hedayat, Héctor Gelber Bolaños Sosa, Roberto Pedro Huamani Bernal, Néstor Tupa, Isaac Yanqui Morales, Reynaldo Sabino Canahua Loza,
Sustainably reusing mine tailings and reducing the economic costs of storing them is an ongoing concern in the geomechanics field. This paper discusses the process of utilizing MTs in the manufacture of geopolymer through alkaline activation. Since geopolymer is subjected to various external and internal loading conditions that could result in failures and fractures, understanding the fracture behaviors of MTs-based geopolymer is critically important for its use and application. The fracture behaviors ...
Tópico(s): Tailings Management and Properties
2021 - Elsevier BV | Theoretical and Applied Fracture Mechanics
Nan Zhang, Ahmadreza Hedayat, Shaoyang Han, Shuqi Ma, Héctor Gelber Bolaños Sosa, Roberto Pedro Huamani Bernal, Néstor Tupa, Isaac Yanqui Morales, Reynaldo Sabino Canahua Loza,
As a potential alternative of Portland cement concrete for construction and building applications, solid-like geopolymer made by alkali-activation of the mine tailings (MTs) shares the similar brittle properties with rocks and concrete. However, the pure MTs did not have sufficient amorphous aluminosilicates for better alkali activation. It is essential to add some materials as the source of amorphous aluminosilicates for better reactivity to adjust the geoploymeric cell structures and improve the ...
Tópico(s): Innovative concrete reinforcement materials
2022 - Elsevier BV | Engineering Fracture Mechanics
Nan Zhang, Ahmadreza Hedayat, Linda Figueroa, K. Xerxes Steirer, Haoyuan Li, Héctor Gelber Bolaños Sosa, Roberto Pedro Huamani Bernal, Néstor Tupa, Isaac Yanqui Morales, Reynaldo Sabino Canahua Loza,
This paper presents an investigation on the durability and leaching behavior of gold MTs-based geopolymer by conducting a series of experiments that included uniaxial compressive tests (UCT) and static monolithic leaching tests, considering submersion into three different reagent solutions: deionized (DI) water, salty water, and acidic water to mimic its resistance to different environmental impacts. The strength degradation of the geopolymer prior to and after immersion in different reagent solutions ...
Tópico(s): Mine drainage and remediation techniques
2022 - Elsevier BV | Cement and Concrete Composites
Elisa Ramos‐Sevillano, Cinthya Rodríguez-Sosa, Roberto Díez‐Martínez, María-José Giménez, Eduardo Olmedillas, Pedro Garcı́a, Ernesto Garcı́a, Lorenzo Aguilar, José Yuste,
The emergence of Streptococcus pneumoniae strains displaying high levels of multidrug resistance is of great concern worldwide and a serious threat for the outcome of the infection. Modifications of the bacterial envelope by antibiotics may assist the recognition and clearance of the pathogen by the host immune system. Recognition of S. pneumoniae resistant strains by the complement component C3b was increased in the presence of specific anti-pneumococcal antibodies and subinhibitory concentrations ...
Tópico(s): Antibiotic Resistance in Bacteria
2012 - American Society for Microbiology | Antimicrobial Agents and Chemotherapy
Myriam Raquel Laconi, Carlos J Chávez, Juan C. Cavicchia, M.R. Fóscolo, Zulema Y. Sosa, Roberto Yunes, Rodrigo Cabrera,
Steroids synthesized in the central nervous system are termed "neurosteroids". They are synthesized and metabolized in several brain areas. The objective of this work was to determine if 1 intracerebroventricular allopregnanolone injection in rats can interfere in luteal regression in a close relationship with modifications in LH, progesterone, and prolactin serum concentrations. Allopregnanolone was injected during proestrus morning and the animals were sacrificed on oestrous morning. Ovulation ...
Tópico(s): Stress Responses and Cortisol
2012 - Thieme Medical Publishers (Germany) | Hormone and Metabolic Research
J. Alberto Escobar, J Jesús Sosa, Roberto Gómez,
The transformation matrix method for damage detection in structural elements of frame buildings, expressed as the loss of stiffness, is proposed and evaluated. The method, which allows the locating and assessing of the damage magnitude of structural elements by considering the contribution of each of them to the overall performance of the structure, is applicable to two- and three-dimensional building frames of several storeys and bays with one or several damaged elements. Effects of uncertainties ...
Tópico(s): Ultrasonics and Acoustic Wave Propagation
2001 - NRC Research Press | Canadian Journal of Civil Engineering
José Roberto Díaz-Reza, Jorge Luis García‐Alcaraz, Liliana Avelar-Sosa, José Roberto Mendoza-Fong, Juan Carlos Sáenz Diez-Muro, Julio Blanco‐Fernández,
The present research proposes a structural equation model to integrate four latent variables: managerial commitment, preventive maintenance, total productive maintenance, and productivity benefits. In addition, these variables are related through six research hypotheses that are validated using collected data from 368 surveys administered in the Mexican manufacturing industry. Consequently, the model is evaluated using partial least squares. The results show that managerial commitment is critical ...
Tópico(s): Occupational Health and Safety Research
2018 - Multidisciplinary Digital Publishing Institute | Applied Sciences
Dianne Hales, Betsy Lozoff, Roberto Sosa, John H. Kennell,
SUMMARY In recent years several studies have reported the effects of early postpartum contact betèeen mother and infant. These effects are thought to be the result of interactions during a unique period occurring soon after delivery: a sensitive period èhich appears to be optimal for the formation of a strong bond of affection in the mother. The purpose of the present study èas to explore hoè long this sensitive period lasts. Sixty primiparous Guatemalan mothers aged betèeen 16 and 35 years èere ...
Tópico(s): Attachment and Relationship Dynamics
1977 - Wiley | Developmental Medicine & Child Neurology
Roberto Sosa, John H. Kennell, Marshall H. Klaus, Juan J. Urrutia,
This chapter contains section titled: Results Discussion Acknowledgements References Discussion References
Tópico(s): Pediatric health and respiratory diseases
1976 - Wiley | Novartis Foundation symposium
Roberto Sosa, Marshall H. Klaus, Juan J. Urrutia,
Tópico(s): Child Nutrition and Feeding Issues
1976 - Elsevier BV | The Journal of Pediatrics
Roberto Sosa, John H. Kennell, Marshall H. Klaus, Steven S. Robertson, Juan J. Urrutia,
We studied the effects of a supportive lay woman ("doula") on the length of labor and on mother-infant interaction after delivery in healthy Guatemalan primigravid women. Initial assignment of mothers to the experimental (doula) or control group was random, but controls showed a higher rate (P less than 0.001) of subsequent perinatal problems (e.g. cesarean section and meconium staining). It was necessary to admit 103 mothers to the control group and 33 to the experimental group to obtain 20 in each ...
Tópico(s): Global Maternal and Child Health
1980 - Massachusetts Medical Society | New England Journal of Medicine
Avroy A. Fanaroff, Chul Choon, Roberto Sosa, Robert S. Crumrine, Marshall H. Klaus,
A sequential controlled trial of continuous negative pressure versus oxygen in treatment of severe respiratory distress syndrome (PaO2 1,000 Gm. and who had no congenital malformations were studied; there were 14 in the oxygen-treated control group and 15 in the CNP-treated group. Following the study, seven additional infants were treated with CNP. Birth weights, sex, gestational ages, ages, and blood gases at the time of admission to the study were similar. Study failure was defined as a PaO2<50 ...
Tópico(s): Neuroscience of respiration and sleep
1973 - Elsevier BV | The Journal of Pediatrics
Samir E. Bishara, Roberto Sosa Martinez de Arrendondo, Hernan Patron Vales, Jane R. Jakobsen,
A total of thirty persons with unoperated unilateral cleft lip and alveolus, unilateral cleft lip and palate, and bilateral cleft lip and palate were evaluated. The ages of these persons ranged from 7 to 50 years. Fifty parameters were measured on the cephalograms and the dental casts. Descriptive statistics for these parameters were calculated. The analysis of variance (general linear models procedure) was performed to compare the three cleft groups. Among the significant differences between the ...
Tópico(s): Craniofacial Disorders and Treatments
1985 - Elsevier BV | American Journal of Orthodontics
Roberto Sosa, Lewis A. Barness,
Unprocessed breast milk is currently being used as a desirable feeding alternative for premature infants. To assess some of the potential risks of this practice, we studied the bacterial growth in 41 samples of unprocessed human milk for a period of five days. No bacteria were cultured in eight samples of milk; the bacteria that were cultured in the remaining 33 samples were similar to those found on the skin and nipple of the breast. With the exception of three samples, two with Klebsiella and ...
Tópico(s): Pediatric health and respiratory diseases
1987 - American Medical Association | American journal of diseases of children
M. Klaus, John H. Kennell, Steven S. Robertson, Roberto Sosa,
Because continuous social support during labour is a component of care in many societies but inconsistent in our own, the clinical effect of support during labour on maternal and neonatal morbidity were studied. Social support was provided by female companions. Four hundred and sixty five healthy primigravidous women were enrolled using a randomised design. Compared with 249 women undergoing labour alone 168 women who had supportive female companions throughout labour had significantly fewer perinatal ...
Tópico(s): Maternal and Perinatal Health Interventions
1986 - BMJ | BMJ
Roberto Sosa, Juan D’Adamo, Guillermo Artana,
The drag reduction in a circular cylinder was explored by means of a novel three electrode plasma actuator (DBDE). The DBDE actuator can reduce the drag coefficient up to a ~25% respect to the base flow drag coefficient. It has been demonstrated that, within the present experimental conditions, the DBDE actuator, for a fixed value of the power coefficient, adds a higher momentum to the flow and, consequently, produces a higher drag reduction than the DBD actuator with the same power coefficient. The ...
Tópico(s): Aerodynamics and Fluid Dynamics Research
2009 - IOP Publishing | Journal of Physics Conference Series