Associations of HIV Risk Behaviors among Older Latinas and their Adult Daughters

This dissertation examines the associations between adult Latina daughters’ HIV risk behaviors and that of their older Latina mothers’ HIV risk behaviors. The central hypothesis of the study is that adult Latina daughters’ influence their older mothers’ behaviors and that such behaviors interact with the level of their attachment. Older Latinas are a vulnerable population that face cultural risk factors, health care provider bias, and engage in low rates of HIV testing. The primary mode of HIV infection for Latinas is through heterosexual contact. Yet, traditional gender norms such as marianismo belief place pressure on Latina women to be submissive to their partners, disregard their infidelities, and not attempt to negotiate condom use, increasing the risk of HIV infection among Latinas via heterosexual sex with their primary partners. Efforts by the CDC to increase HIV testing have emerged as a critical part of HIV prevention. However, research has indicated that older Latinas are less likely to speak to a health care provider about safe sex practices or HIV testing than their younger counterparts. Despite health care providers having strong influences over Latinas’ decisions to perform health related tests, physicians are not endorsing HIV testing for their older patients. This in part, leads to a disproportionate number of late stage diagnoses among older adults. Evidence suggest that adult daughters are a source of support and assistance in health-related issues for their aging mothers and are uniquely positioned to influence their mothers’ health-related behaviors and decisions. Additionally, mother-daughter attachment has been found to be a protective factor to other risky health behaviors. The present study (1) Examined the association between recurrent HIV risk behaviors of adult Latina daughters and those of their older Latina mothers and (2) examined the moderating effect mother-daughter attachment have on those associations. No statistical significance was found in examining the association between adult Latina daughters and their older mothers, nor was attachment found to be a moderator on those associations. Findings show culture may be the significant factor influencing the lack of association between adult Latina daughters and their older mothers. Results add to the literature and scientific field of social work and public health. Additionally promoting studies on cultural barriers that may exist in adult Latina daughter and older mother upward communication as techniques to promote healthy behaviors among older Latinas

Free energy and vibrational entropy difference between ordered and disordered Ni3Al

We have calculated free energy and vibrational entropy differences in Ni3Al between its equilibrium ordered structure and a disordered fcc solid solution. The free energy and entropy differences were calculated using the method of adiabatic switching in a molecular-dynamics formalism. The path chosen for the free-energy calculations directly connects the disordered with the ordered state. The atomic interactions are described by embedded-atom-method potentials. We find that the vibrational entropy difference increases with temperature from 0.14kB/atom at 300 K to 0.22kB/atom at 1200 K. We have calculated the density of states (DOS) of the disordered phase from the Fourier transform of the velocity-velocity autocorrelation function. The disordered DOS looks more like a broadened version of the ordered DOS. Analysis of the partial density of states shows that the Al atoms vibrations are most affected by the compositional disorder. The phonon partial spectral intensities along the 〈100〉 direction show that the vibrational spectrum of the disordered phase contains intensities at optical mode frequencies of the ordered alloy. We find that the volume difference between the ordered and disordered phases plays the most crucial role in the magnitude of the vibrational entropy difference. If the lattice constant of the two phases is set to the same value, the vibrational entropy difference decreases to zero

Schrödinger Equation with Position-Dependent Mass: Staggered Mass Distributions

The Point canonical transformation method is applied for solving the Schrödinger equation with position-dependent mass. This class of problem has been solved for continuous mass distributions. In this work, a staggered mass distribution for the case of a free particle in an infinite square well potential has been proposed. The continuity conditions as well as normalization for the wave function are also considered. The proposal can be used for dealing with other kind of staggered mass distributions in the Schrödinger equation with different quantum potentials

La brotación y la floración del kiwi en función de las temperaturas invierno - primaverales de la región central de Córdoba

p.183-188Se analizaron la brotación y floración del kiwi en relación a la acumulación de unidades Richardson en dos localidades de la región central de Córdoba durante las campañas agrícolas 1990-91 y 1991-92. Se observaron diferencias significativas entre los cultivares Hayward y M- 54 en cuanto a las fechas de ocurrencia de la brotación. El porcentaje de yemas brotadas estuvo relacionado con el nivel del enfriamiento invernal. Asimismo, la duración de la floración, en particular de las flores femeninas, se reduce al producirse una mayor acumulación de unidades de Richardson. Las condiciones meteorológicas registradas en las localidades estudiadas durante el período de la dormición invernal fueron propicias para el posterior desarrollo de la brotación y floración del kiwi

Relationship between individual chamber and whole shell Mg/Ca ratios in Trilobatus sacculifer and implications for individual foraminifera palaeoceanographic reconstructions

Precisely targeted measurements of trace elements using laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) reveal inter-chamber heterogeneities in specimens of the planktic foraminifer Trilobatus (Globigerinoides) sacculifer. We find that Mg/Ca ratios in the final growth chamber are generally lower compared to previous growth chambers, but final chamber Mg/Ca is elevated in one of thirteen sample intervals. Differences in distributions of Mg/Ca values from separate growth chambers are observed, occurring most often at lower Mg/Ca values, suggesting that single-chamber measurements may not be reflective of the specimen’s integrated Mg/Ca. We compared LA-ICPMS Mg/Ca values to paired, same-individual Mg/Ca measured via inductively coupled plasma optical emission spectrometry (ICP-OES) to assess their correspondence. Paired LA-ICPMS and ICP-OES Mg/Ca show a maximum correlation coefficient of R = 0.92 (p \u3c 0.05) achieved by applying a weighted average of the last and penultimate growth chambers. Population distributions of paired Mg/Ca values are identical under this weighting. These findings demonstrate that multi-chamber LA-ICPMS measurements can approximate entire specimen Mg/Ca, and is thus representative of the integrated conditions experienced during the specimen’s lifespan. This correspondence between LA-ICPMS and ICP-OES data links these methods and demonstrates that both generate Mg/Ca values suitable for individual foraminifera palaeoceanographic reconstructions

Design and validation of a tool to assess motor coordination in primary

La coordinación motriz es un proceso evolutivo complejo de adquisición progresiva. La edad óptima para la adquisición de esos procesos coordinativos es de 6 a 11 años (Educación Primaria). El objetivo del presente estudio es diseñar y validar un instrumento que permita evaluar el nivel de coordinación motriz del alumnado Método: Los sujetos son alumnado de Primaria en centros públicos. Muestreo por conveniencia, con una muestra total de 2512 sujetos. Instrumento: Test cualitativo de observación y evaluación objetiva de la ejecución de la habilidad desarrollada en 7 tareas. Resultados: La Consistencia interna (Alfa de Cronbach 0.827), estabilidad temporal (coeficiente correlación: 0.99) y concordancia inter-observadores (coeficiente correlación: 0.95). La validez se comprobó mediante la opinión intuitiva de expertos, siendo la opinión mayoritariamente favorable. Conclusión: El test 3JS es un instrumento fiable, válido y eficaz para medir el desarrollo de la coordinación motriz en el alumnado de 6 a 12 añosMotor coordination is a complex evolutionary process which is gradually acquired. The optimum age for the achievement of these coordination processes is between 6 and 11 years old (Primary Education). The aim of this study is to design and validate a tool which will allow assessing the motor coordination level of the students. Method: Subjects and Sample. Students from Primary Education public schools. ‘Convenience’ sampling, with a total of 2512 subjects. Tool: Qualitative observation test and objective evaluation of the implementation of the abilities developed in 7 tasks. Results: Reliability: Internal Consistency (Cronbach Alpha 0.827), test-retest reliability (correlation coefficient; 0.99) and inter-observer agreement (correlation coefficient; 0.95). Validity has been verified by the experts’ intuitive perception, issuing a largely favourable opinion. Conclusion: The 3JS test is a reliable, valid and effective tool for measuring the motor coordination development in students between 6 and 12 years ol

Relationship between individual chamber and whole shell Mg/Ca ratios in Trilobatus sacculifer and implications for individual foraminifera palaeoceanographic reconstructions

© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Rustic, G. T., Polissar, P. J., Ravelo, A. C., & DeMenocal, P. Relationship between individual chamber and whole shell Mg/Ca ratios in Trilobatus sacculifer and implications for individual foraminifera palaeoceanographic reconstructions. Scientific Reports, 11(1), (2021): 463, https://doi.org/10.1038/s41598-020-80673-8.Precisely targeted measurements of trace elements using laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) reveal inter-chamber heterogeneities in specimens of the planktic foraminifer Trilobatus (Globigerinoides) sacculifer. We find that Mg/Ca ratios in the final growth chamber are generally lower compared to previous growth chambers, but final chamber Mg/Ca is elevated in one of thirteen sample intervals. Differences in distributions of Mg/Ca values from separate growth chambers are observed, occurring most often at lower Mg/Ca values, suggesting that single-chamber measurements may not be reflective of the specimen’s integrated Mg/Ca. We compared LA-ICPMS Mg/Ca values to paired, same-individual Mg/Ca measured via inductively coupled plasma optical emission spectrometry (ICP-OES) to assess their correspondence. Paired LA-ICPMS and ICP-OES Mg/Ca show a maximum correlation coefficient of R = 0.92 (p < 0.05) achieved by applying a weighted average of the last and penultimate growth chambers. Population distributions of paired Mg/Ca values are identical under this weighting. These findings demonstrate that multi-chamber LA-ICPMS measurements can approximate entire specimen Mg/Ca, and is thus representative of the integrated conditions experienced during the specimen’s lifespan. This correspondence between LA-ICPMS and ICP-OES data links these methods and demonstrates that both generate Mg/Ca values suitable for individual foraminifera palaeoceanographic reconstructions.This research was funded by National Science Foundation Grants OCE 1401649 and OCE 1405178, the Lamont-Doherty Earth Observatory Climate Center, and the Columbia Center for Climate and Life

Investigation of correlations between clinical signs and pathological findings in cats and dogs with inflammatory bowel disease

This paper compares the correlation between the clinical signs and the histopathological observations of the entire intestine in cats and dogs with inflammatory bowel disease (IBD). To perform this study, hospital records of 53 dogs and 20 cats of different sex, ages, and breed diagnosed with IBD following the histopathological criteria of the World Small Animal Veterinary Association (WSAVA) were evaluated. The results obtained in this study did show correlations between some clinical signs and the histopathological assessment of dogs and cats with IBD. Therefore, a slight association between diarrhea and lacteal dilation in the small bowel, and diarrhea and desquamation in the large bowel of dogs with IBD was seen, but no other associations were found between the rest of the lesions and symptoms. In contrast, cats only showed a correlation between anorexia with villous stunting and villous epithelial injury, without correspondence among other clinical signs and lesions. The results of this study propose that the evaluation of IBD can be complicated, especially with the use of retrospective records of archived intestinal biopsies and subjective clinical and histopathologic decisions

PCB access impedances extraction method of in-situ integrated circuit

This article describes an extraction technique of input and output impedances of integrated circuits (ICs) implemented onto the printed circuit boards (PCBs). The feasibility of the technique is illustrated with a proof-of-concept (POC) constituted by two ICs operating in a typically transmitter-receiver (Tx-Rx) circuit. The POC system is assumed composed of three different blocks of emitter signal source, load and interconnect passive network. This latter one is assumed defined by its chain matrix known from its electrical and physical characteristics. The proposed impedance extraction method is elaborated from the given signals at the transmitter output and receiver input. The terminal access impedances are formulated in function of the parameters of the interconnect system chain matrix. The feasibility of the method is checked with a passive circuit constituted by transmission lines driven by voltage source with RL-series network internal impedance and loaded at the output by the RC-parallel network. Good correlation between the access impedance reference and calculated is found