1,083 research outputs found
Faith and Masculinity: A Discussion on Raising Awareness and Promoting Cancer Screening Among Latino Men
Males may experience several barriers to seeking health care, including unfamiliarity with procedures (e.g. colonoscopy), stigma and fear of a given health issue, perceived breach of masculinity (machismo), and fear of feeling vulnerable. Evidence suggests church-based interventions are an effective way to strengthen the connection between promotional message content and participant conceptualization of the risks and benefits of health screenings. However, there is a lack of evidence demonstrating such effectiveness in men’s health, and there is even more of a dearth of research focusing on Latinos. This discussion presents trends from a series of 4 community-based seminars during the 2010-2011 academic year conducted with Latino faith-based groups on men’s health issues. Approximately 70 Latino men attended a series of seminars on health and wellness as it pertains to cancer screening procedures offered after church services. A particular emphasis was placed on perceived masculinity (machismo) and gender roles within the social environment, and how they influence health screenings among men, particularly for colorectal, prostate, and testicular cancer. The seminar series were a first step in laying the foundations for future formal effectiveness testing of faith-based facilities serving as a conduit for health promotion efforts among Latinos. This paper presents lessons learned from this new approach in community health outreach efforts. We advocate that faith-based groups can be an efficient and effective way to raise awareness and promote wellness among Latino men
Medical symptoms associated with tobacco smoking with and without marijuana abuse among crack cocaine-dependent patients.
Despite the widespread use of tobacco and marijuana by cocaine abusers, it remains unclear whether combined tobacco and marijuana smoking is more harmful than tobacco smoking alone in cocaine abusers. We investigated the differences in medical symptoms reported among 34 crack cocaine abusers who did not smoke tobacco or marijuana (C), 86 crack cocaine abusers who also smoked tobacco (C + T), and 48 crack abusers who smoked both tobacco and marijuana (C + T + M). Medical symptoms were recorded using a 134-item self-report instrument (MILCOM), and drug use was assessed using the Addiction Severity Index (ASI). After controlling for clinical and demographic differences, the C + T + M group reported significantly more total symptoms on the MILCOM as well as on the respiratory, digestive, general, and nose/throat subscales than the C + T or C groups. The C + T group reported higher total and respiratory and nose/throat symptoms than the C group. HOwever, the C group had the highest number of mood symptoms among the three groups. The C + T and C + T + M groups were comparable in number of cigarettes smoked and ASI scores. Although tobacco smoking is associated with higher reports of medical problems in crack abusers, smoking both marijuana and tobacco seems to be associated with greater medical problems than smoking tobacco alone. Tobacco smoking was not related to changes in cocaine use. Also, marijuana smoking does not appear to be associated with a reduction in tobacco or cocaine use
How Do Auditors Behave During Periods of Market Euphoria? The Case of Internet IPOs
The study of periods of market euphoria, such as Holland’s seventeenth-century tulip
mania, England’s eighteenth-century South Sea Company, America’s nineteenth-century
railroads, or, most recently, the U.S. housing market, is a topic of long-standing interest to economists. Theorists specify conditions under which market participants and institutions cause "bubbles" to arise and persist and empiricists test participant-centric or institution- centric explanations (Hong, Scheinkman, and Xiong 2008; Schultz 2008; Greenwood and Nagel 2009). In this paper, we study a different participant other than one that stands to gain from price fluctuations. We are interested in how auditors behave during periods of market euphoria. Given their gatekeeper responsibility to act in the public’s interest, along with the seeming inevitability of bubbles (Rampell 2009), it is important to study how auditors behave during euphoric market conditions. To address this question, we examine auditor going-concern (GC) opinions around the time of the wave of stressed Internet firms filing to go public on NASDAQ, the capital markets entry point for the companies that went on to constitute "dotcom mania"
Coherent Phonons in Antimony: an Undergraduate Physical Chemistry Solid-State Ultrafast Laser Spectroscopy Experiment
Ultrafast laser pump-probe spectroscopy is an important and growing field of
physical chemistry that allows the measurement of chemical dynamics on their
natural timescales, but undergraduate laboratory courses lack examples of such
spectroscopy and the interpretation of the dynamics that occur. Here we develop
and implement an ultrafast pump-probe spectroscopy experiment for the
undergraduate physical chemistry laboratory course at the University of
California Berkeley. The goal of the experiment is to expose students to
concepts in solid-state chemistry and ultrafast spectroscopy via classic
coherent phonon dynamics principles developed by researchers over multiple
decades. The experiment utilizes a modern high-repetition rate 800 nm
femtosecond Ti:Sapphire laser, split pulses with a variable time delay, and
sensitive detection of transient reflectivity signals. The experiment involves
minimal intervention from students and is therefore easy and safe to implement
in the laboratory. Students first perform an intensity autocorrelation
measurement on the femtosecond laser pulses to obtain their temporal duration.
Then, students measure the pump-probe reflectivity of a single-crystal antimony
sample to determine the period of coherent phonon oscillations initiated by an
ultrafast pulse excitation, which is analyzed by fitting to a sine wave. Due to
the disruption of in-person instruction caused by the COVID-19 pandemic, during
those semesters students were provided the data they would have obtained during
the experiment to analyze at home. Evaluation of student written reports
reveals that the learning goals were met, and that students gained an
appreciation for the field of ultrafast laser-induced chemistry
Direct and Simultaneous Observation of Ultrafast Electron and Hole Dynamics in Germanium
Understanding excited carrier dynamics in semiconductors is crucial for the
development of photovoltaics and efficient photonic devices. However,
overlapping spectral features in optical/NIR pump-probe spectroscopy often
render assignments of separate electron and hole carrier dynamics ambiguous.
Here, ultrafast electron and hole dynamics in germanium nanocrystalline thin
films are directly and simultaneously observed by attosecond transient
absorption spectroscopy (ATAS) in the extreme ultraviolet at the germanium
M_{4,5}-edge (~30 eV). We decompose the ATAS spectra into contributions of
electronic state blocking and photo-induced band shifts at a carrier density of
8*10^{20}cm^{-3}. Separate electron and hole relaxation times are observed as a
function of hot carrier energies. A first order electron and hole decay of ~1
ps suggests a Shockley-Read-Hall recombination mechanism. The simultaneous
observation of electrons and holes with ATAS paves the way for investigating
few to sub-femtosecond dynamics of both holes and electrons in complex
semiconductor materials and across junctions.Comment: Includes Supplementary Informatio
A Call for Gender-Inclusive Global Health Strategies
The WHO\u27s Global Strategy for Women\u27s, Children\u27s, and Adolescents\u27 Health 2016-2030 (GS-WCAH 2016-2030) is a comprehensive plan developed to improve the lives of women, children, and adolescents. Due to the success in the creation, ratification, and advocacy of the GS-WCAH 2016-2030, the clear health outcome disparities between males and females, and the general absence of male health from existing policies and sponsored programs, it is time now to develop a global strategy specifically drafted to improve the lives of men and boys. The following commentary provides three points for why a male-oriented program, like the GS-WCAH 2016-2030, should be created: (a) health outcomes disparities, (b) economic impact of poor male health, and (c) fathers\u27 role in promoting the health of women, children, and adolescents. Implications for how male health can be incorporated into future projects and priorities are provided, as well as advocacy for overall gender-inclusivity in regard to global public health efforts
Attosecond Time-Domain Measurement of Core-Level-Exciton Decay in Magnesium Oxide.
Excitation of ionic solids with extreme ultraviolet pulses creates localized core-level excitons, which in some cases couple strongly to the lattice. Here, core-level-exciton states of magnesium oxide are studied in the time domain at the Mg L_{2,3} edge with attosecond transient reflectivity spectroscopy. Attosecond pulses trigger the excitation of these short-lived quasiparticles, whose decay is perturbed by time-delayed near-infrared pulses. Combined with a few-state theoretical model, this reveals that the infrared pulse shifts the energy of bright (dipole-allowed) core-level-exciton states as well as induces features arising from dark core-level excitons. We report coherence lifetimes for the two lowest core-level excitons of 2.3±0.2 and 1.6±0.5  fs and show that these are primarily a consequence of strong exciton-phonon coupling, disclosing the drastic influence of structural effects in this ultrafast relaxation process
Increased Physical Activity and Reduced Pain with Spinal Cord Stimulation: a 12-Month Study
International Journal of Exercise Science 13(3): 1583-1594, 2020. The purpose of this study was to assess changes in pain and physical activity after replacing a traditional spinal cord stimulation (SCS) implantable pulse generator with a next generation SCS in patients for whom traditional SCS was no longer providing adequate relief of low back and/or leg pain. Subjects (n = 19) who reported that they were no longer receiving adequate relief from traditional SCS were implanted with a next generation SCS. Eighteen additional patients who were receiving relief from traditional SCS were also followed as a control. Both groups (next generation, traditional) were assessed for low-back and limb pain (visual analog scale) and daily physical activity (wearable accelerometer) at baseline and three, six, nine and 12 months following the SCS implant. Relative to baseline, next generation SCS subjects exhibited reductions (p ≤ 0.05 for all) in low-back pain (average reduction of 22%) at every time point, in leg pain (average reduction of 23%) at every time point except six months and increased physical activity (average increase of 57%) at three, six and nine months. As expected, there were no changes in pain or physical activity in the traditional SCS subjects (p ≥ 0.1). In conclusion, pain decreased, and physical activity increased in patients receiving a next generation SCS. Physical activity may serve as an objectively measured marker of pain
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