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Aprinda Indahlastari,1,2 Cheshire Hardcastle,1,2 Alejandro Albizu,1,3 Stacey Alvarez-Alvarado,1,2 Emanuel M Boutzoukas,1,2 Nicole D Evangelista,1,2 Hanna K Hausman,1,2 Jessica Kraft,1,3 Kailey Langer,1,2 Adam J Woods1– 3 1Center for Cognitive Aging and Memory, McKnight Brain Institute, University of Florida, Gainesville, FL, USA; 2Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA; 3Department of Neuroscience, University of Florida, Gainesville, FL, USACorrespondence: Aprinda IndahlastariDepartment of Clinical and Health Psychology, University of Florida, Gainesville, FL, USATel +1 352-294-5842Email aprinda.indahlas@phhp.ufl.eduBackground: Transcranial direct current stimulation (tDCS) has been proposed as a possible method for remediating age-associated cognitive decline in the older adult population. While tDCS has shown potential for improving cognitive functions in healthy older adults, stimulation outcomes on various cognitive domains have been mixed.Methods: A systematic search was performed in four databases: PubMed, EMBASE, Web of Science, and PsychInfo. Search results were then screened for eligibility based on inclusion/exclusion criteria to only include studies where tDCS was applied to improve cognition in healthy older adults 65 years and above. Eligible studies were reviewed and demographic characteristics, tDCS dose parameters, study procedures, and cognitive outcomes were extracted. Reported effect sizes for active compared to sham group in representative cognitive domain were converted to Hedges’ g.Main Results: A total of thirteen studies involving healthy older adults (n=532, mean age=71.2+ 5.3 years) were included in the meta-analysis. The majority of included studies (94%) targeted the prefrontal cortex with stimulation intensity 1– 2 mA using various electrode placements with anodes near the frontal region. Across all studies, we found Hedges’ g values ranged from − 0.31 to 1.85 as reported group effect sizes of active stimulation compared to sham.Conclusion: While observed outcomes varied, overall findings indicated promising effects of tDCS to remediate cognitive aging and thus deserves further exploration. Future characterization of inter-individual variability in tDCS dose response and applications in larger cohorts are warranted to further validate benefits of tDCS for cognition in healthy older adults.Keywords: tES, tDCS, aging, cognitive decline

Objective: The purpose of this study was to examine the impact of a relationship enhancement program on 4 outcome measures: (1) communication skills; (2) conflict resolution/conflict management, and problem-solving skills; (3) healthy relationship and marriage skills; and (4) progress towards greater economic stability. Methods. Refugee and immigrant youth (N = 341) were randomly assigned to either an intervention group or a comparison group. Intervention participants received a 16-hour relationship enhancement (RE) program developed for refugee populations. In addition to the RE program, intervention participants also received case management. Participants in the comparison group only received case management. All participants, intervention and control, completed self-report questionnaires prior to the beginning of the program. Intervention youth participated in the RE program. All participants completed a posttest questionnaire at the end of the program, and again 6 months after the end of the program. Results. Intervention participants made statistically significant improvements from pretest to 6-month follow-up (p < .05) compared to control participants for 3 of the 4 outcome variables. Conclusion. These results indicate the positive impact of an RE program on refugee and immigrant youth. Future researchers should consider including specific health programming as part of the intervention and also examine health behavior and other direct health outcomes. [ABSTRACT FROM AUTHOR]

We report the design, fabrication, and characterization of a porous silicon-based omnidirectional mirror for the near infrared range. The structure consists of 300 porous silicon chirped dielectric layers, optimized to have omnidirectional reflectivity response from 1000 to 2000 nm wavelength range. Measurements of reflectivity spectra are presented for non-polarized light at several incident angles (range 8 ° – 65 °) with a reflectivity > --> 95% covering a 1 μ m band-width. Transfer matrix method calculations were carried out to show the complete angular range for both TM and TE polarizations including a simple model to illustrate the interface scattering effects. [ABSTRACT FROM AUTHOR]

The implementation of an automated system based on the hot-wire technique is described for the measurement of the thermal conductivity of liquids using equipment easily available in modern physics laboratories at high schools and universities (basically a precision current source and a voltage meter, a data acquisition card, a personal computer and a high purity platinum wire). The wire, which is immersed in the investigated sample, is heated by passing a constant electrical current through it, and its temperature evolution, "[delta]T", is measured as a function of time, "t", for several values of the current. A straightforward methodology is then used for data processing in order to obtain the liquid thermal conductivity. The start point is the well known linear relationship between "[delta]T" and ln("t") predicted for long heating times by a model based on a solution of the heat conduction equation for an infinite lineal heat source embedded in an infinite medium into which heat is conducted without convective and radiative heat losses. A criterion is used to verify that the selected linear region is the one that matches the conditions imposed by the theoretical model. As a consequence the method involves least-squares fits in linear, semi-logarithmic (semi-log) and log-log graphs, so that it becomes attractive not only to teach about heat transfer and thermal properties measurement techniques, but also as a good exercise for students of undergraduate courses of physics and engineering learning about these kinds of mathematical functional relationships between variables. The functionality of the experiment was demonstrated by measuring the thermal conductivity in samples of liquids with well known thermal properties. (Contains 1 table and 3 figures.)

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Presentamos nuestra experiencia de 6 pacientes con metrorragia a repetición, portadoras de patologías médicas que representaban un riesgo desde el punto de vista anestésico y quirúrgico, en las cuales se insertó DIU-LNG como alternativa a la histerectomía. Todas evolucionan satisfactoriamente y sin complicaciones, con disminución significativa de las pérdidas hemáticas desde el tercer mes de uso, objetivadas por pictogramas. Se concluye que el DIU-LNG es un excelente método para el control de metrorragias en pacientes con patologías médicas relevantesWe present our experience with 6 patients with menorrhagia and medical conditions considered high risk patients for anaesthesia and surgical procedures. We inserted LNG-IUD as alternative to hysterectomy. Three months later, all of them reduced menstrual blood loss as it was shown by pictorial charts, without complications. LNG-IUD is an excellent alternative to hysterectomy in this group of patients