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Search Results: 1 - 10 of 1145 matches for " Edgardo; Delfino-Machin "
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Composition of the zooplankton community,with emphasis in copepods, in Punta Morales,Golfo de Nicoya,Costa Rica
Brugnoli-Olivera,Ernesto; Díaz-Ferguson,Edgardo; Delfino-Machin,Mariana; Morales- Ramírez,Alvaro; Dominici Arosemena,Arturo;
Revista de Biología Tropical , 2004,
Abstract: the composition of the mesozooplanktonic community was studied in the punta morales estuary, gulf of nicoya,pacific coast of costa rica,during 1997.oblique plankton hauls were performed during high and low tide using a 280 μm mesh screen net equipped with a flowmeter.the community was characterized by holoplanktonic and meroplanktonic organisms.for the holoplanktonic community,the main groups were copepods (80%)and chaetognaths (16%).the most abundant species were the copepods acartia lilljeborgii and paracalanus parvus.a.lilljeborgii is a typical estuarine species that maintains high populations in estuarine systems.meroplankton was represented mainly by crustacean larvae (66%),and icthyoplankton (18%).the dominance of crustacean larvae and icthyoplankton is an evidence of the ecological importance of the punta morales zone.rev.biol.trop.52(4):897-902.epub 2005 jun 24.
Composition of the zooplankton community,with emphasis in copepods, in Punta Morales,Golfo de Nicoya,Costa Rica
Ernesto Brugnoli-Olivera,Edgardo Díaz-Ferguson,Mariana Delfino-Machin,Alvaro Morales- Ramírez
Revista de Biología Tropical , 2004,
Abstract: The composition of the mesozooplanktonic community was studied in the Punta Morales estuary, Gulf of Nicoya,Pacific coast of Costa Rica,during 1997.Oblique plankton hauls were performed during high and low tide using a 280 μm mesh screen net equipped with a flowmeter.The community was characterized by holoplanktonic and meroplanktonic organisms.For the holoplanktonic community,the main groups were copepods (80%)and chaetognaths (16%).The most abundant species were the copepods Acartia lilljeborgii and Paracalanus parvus.A.lilljeborgii is a typical estuarine species that maintains high populations in estuarine systems.Meroplankton was represented mainly by crustacean larvae (66%),and icthyoplankton (18%).The dominance of crustacean larvae and icthyoplankton is an evidence of the ecological importance of the Punta Morales zone.Rev.Biol.Trop.52(4):897-902.Epub 2005 Jun 24. Se estudió la composición de la comunidad mezoplanctónica en Punta Morales,Golfo de Nicoya, Pacífico de Costa Rica,en 1997,arrastrando oblicuamente una red de plancton (280 μm,con flujómetro)durante marea alta y baja.La comunidad estuvo caracterizada por la presencia de organismos holo y meroplanctónicos.Los principales grupos holoplanctónicos fueron copépodos (80%)y quetognatos (16%).Las especies más abundantes fueron los copépodos Acartia lilljeborgii y Paracalanus parvus;A. lilljeborgii es una especie estuarina típica que mantiene altas poblaciones en sistemas estuarinos.El meroplancton estuvo representado principalmente por larvas de crustáceos (66%),e ictioplancton (18%).La dominancia de larvas de crustáceos e ictioplancton evidencian la importancia ecológica de la zona de Punta Morales.
Personal Accounts of Mothers’ Use of Social Media to Support Abstinence from Alcohol  [PDF]
Suzanne McGarva, Tony Machin
Journal of Biosciences and Medicines (JBM) , 2017, DOI: 10.4236/jbm.2017.512008
Abstract: Alcohol consumption by professional educated women and mothers is rising. Drinking alcohol in the home is, for many, becoming a normalised and daily ritual. Previous research focuses on causality, risk factors and health related damage. Few studies focus on mothers of school age children specifically or why some mothers pursue and sustain alcohol free lives. The role of social media in enacting and sustaining abstinence is under researched, as are other factors important for this group in remaining abstinent. Aims: This qualitative study explored the reasons why mothers drank alcohol, and factors contributing to their decision to become alcohol free. It also explored the value and utility of social media in the form of a specific website aimed at providing support in abstinence. Methods: Six UK mothers with school age children who had become abstinent after previously drinking over official limits were recruited via social network website and interviewed. Transcripts were analysed thematically and inductive themes emerged. Results: Participants used alcohol to self-medicate, as a reward/relaxation strategy and because it was a normal part of their professional and daily lives. Reported reasons for abstinence included the negative effects alcohol had upon lives, inability to moderate/drink within guidelines and “trigger” events. Participants reported that their use of social media was inspirational, giving them a platform to share stories and help others and was preferred to traditional support. The use of social media in this way represented a supportive community and assisted vigilance toward the danger of relapse. Positive parenting identity, alternatives to alcohol, abstinence rewards and support from abstinent others were all factors in sustaining abstinence. Conclusions: Health professionals should recognise this hidden and hard to reach group and the potential efficacy of social media in assisting recovery from alcohol related issues.
Nem doente, nem vítima: o atendimento às "les?es autoprovocadas" nas emergências
Machin,Rosana;
Ciência & Saúde Coletiva , 2009, DOI: 10.1590/S1413-81232009000500015
Abstract: this paper shows concepts and practices of health professionals regarding cases of self-injury. it is problematized the existent gap between professionals training based in the biomedical model and practices, in which are presented dimension not considered for biomedicine. the empiric reference is a public emergency hospital in the city of s?o paulo. the qualitative nature study was developed by observing attendances, consults to medical records and interviews with health professionals. the underlying question is related to intelligibility model of the illness, based in the body as a privileged locus of care, and illness as accidental event. contradictively, self-injury situations (suicide attempts, drug and alcohol abuse) are analyzed as intentionally events, consequence of a choice, implicating no identification of their authors as patients or victims of care.
Dynamics of the spinning particle in one dimension
W. Machin
Physics , 2001,
Abstract: The most general N=1 Lagrangian for the spinning particle with local supersymmetry is found and the constraints of the system are analysed. The Dirac quantisation of the model is also investigated.
Reliability issues in human brain temperature measurement
Charmaine Childs, Graham Machin
Critical Care , 2009, DOI: 10.1186/cc7943
Abstract: The aim of this study was to assess the performance and measurement uncertainty of body and brain temperature sensors currently in use in neurocritical care. Two organic fixed-point, ultra stable temperature sources were used as the temperature references. Two different types of brain sensor (brain type 1 and brain type 2) and one body type sensor were tested under rigorous laboratory conditions and at the bedside. Measurement uncertainty was calculated using internationally recognised methods.Average differences between the 26°C reference temperature source and the clinical temperature sensors were +0.11°C (brain type 1), +0.24°C (brain type 2) and -0.15°C (body type), respectively. For the 36°C temperature reference source, average differences between the reference source and clinical thermometers were -0.02°C, +0.09°C and -0.03°C for brain type 1, brain type 2 and body type sensor, respectively. Repeat calibrations the following day confirmed that these results were within the calculated uncertainties. The results of the immersion tests revealed that the reading of the body type sensor was sensitive to position, with differences in temperature of -0.5°C to -1.4°C observed on withdrawing the thermometer from the base of the isothermal environment by 4 cm and 8 cm, respectively. Taking into account all the factors tested during the calibration experiments, the measurement uncertainty of the clinical sensors against the (nominal) 26°C and 36°C temperature reference sources for the brain type 1, brain type 2 and body type sensors were ± 0.18°C, ± 0.10°C and ± 0.12°C respectively.The results show that brain temperature sensors are fundamentally accurate and the measurements are precise to within 0.1 to 0.2°C. Subtle dissociation between brain and body temperature in excess of 0.1 to 0.2°C is likely to be real. Body temperature sensors need to be secured in position to ensure that measurements are reliable.In rodent models of cerebral ischaemia, small (1° to 2°C) incre
La economía del Reino Unido y la oferta futura de economistas académicos
Stephen Machin,Andrew Oswald
Análisis Económico , 2000,
Abstract:
Supersymmetric Gauge Theories, Vortices and Equivariant Cohomology
W. Machin,G. Papadopoulos
Physics , 2002, DOI: 10.1088/0264-9381/20/7/302
Abstract: We construct actions for (p,0)- and (p,1)- supersymmetric, 1 <= p <= 4, two-dimensional gauge theories coupled to non-linear sigma model matter with a Wess-Zumino term. We derive the scalar potential for a large class of these models. We then show that the Euclidean actions of the (2,0) and (4,0)-supersymmetric models without Wess-Zumino terms are bounded by topological charges which involve the equivariant extensions of the Kahler forms of the sigma model target spaces evaluated on the two-dimensional spacetime. We give similar bounds for Euclidean actions of appropriate gauge theories coupled to non-linear sigma model matter in higher spacetime dimensions which now involve the equivariant extensions of the Kahler forms of the sigma model target spaces and the second Chern character of gauge fields. The BPS configurations are generalisations of abelian and non-abelian vortices.
Detection of Behavior Patterns in Single Women in Mexico  [PDF]
Edgardo Ruiz, Argelia Avila
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.411129
Abstract:

The proposal of this work is to detect the existence of patterns of interactive sequential discursive behavior in three single Mexican adult women from retrospective analysis of the interview between them and the interviewer. The applied methodology was observational. It was developed iteratively and thoroughly, a category system as an instrument of observation, and then it was undergone a recategorization process. The number of sessions observed was three, of three hours a duration. Intersessional sequential analysis was used through the SDIS-GSEQ software. Thus we find that the first significant categories in order of occurrence are: Being for her self, Paradox and Independence. The following in significant probability of occurrence position are: Dependency, self-satisfaction, Complementary, Comprehension andNormal. Finally, the categories that are inhibitory occurrence probabilistically negative are: Responsible, Myself, Self-understanding. Finding out these women are learning to live for themselves within a process of emancipation from their families and social structures.

Desempleo, transferencias monetarias y condicionalidad: Un análisis en la ciudad de Rosario, Argentina
Delfino,Andrea;
Gaceta Laboral , 2011,
Abstract: since the mid 1990s, in some latin american countries, a number of regulatory policies for unemployment have been developed that incorporate central arguments from the anglo-saxon term workfare. one element this scheme introduces is the obligation of beneficiaries to repay or give compensation for the subsidy received. this article proposes to analyze the specific way that the notion of social reciprocity takes shape in implementing the greatest argentinean regulatory program for unemployment, the ?unemployed head of household? program, in the city of rosario. the problem is approached through four central themes: places where the compensatory activities foreseen in the program?s regulations are carried out; the number of beneficiaries who effectively carry out such activities; the number of hours invested in these activities; and the type of activities carried out. methodology combines the use of secondary information from official records with the use of primary information from the study?s own time use surveys.
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