2,337 research outputs found
Introduction
The introduction (about 6,000 words) to _The Cambridge Companion to Utilitarianism_, in three sections: utilitarianism’s place in recent and contemporary moral philosophy (including the opinions of critics such as Rawls and Scanlon), a brief history of the view (again, including the opinions of critics, such as Marx and Nietzsche), and an overview of the chapters of the book
Religiosity and Sexual Risk Behaviors Among Latina Adolescents: Trends from 1995 to 2008
Purpose: The purpose of this study was to determine trends in the influence of religiosity on sexual activity of Latina adolescents in the United States from 1995 to 2008 and to determine if differences existed between the Mexican American and other Latina groups.
Methods: The sample comprised the subset of unmarried, 15–21-year-old (mean 17 years) Latina female respondents in the 1995 (n=267), 2002 (n=306), and 2006–2008 (n=400) National Survey of Family Growth (NSFG) datasets. Associations between religiosity (importance of religion and service attendance) and history of ever having sex, number of sex partners, and age of sexual debut were investigated.
Results: Less than one half of Latinas in 1995 (44%) and in 2006–2008 (44%) reported that religion was very important to them, whereas in 2002, 50% reported it was important. Only in 1995 did Latinas who viewed religion as very important have a significantly lower level of sexual initiation. In 1995 and in 2006–2008, Latinas who held religion as very important had significantly fewer partners. In all three cohorts, the higher religious importance group had higher virgin survival rates. Across cohorts, approximately one third of respondents reported frequent religious attendance. In all cohorts, frequent attenders were less likely to have had sex, had fewer partners, and had older age at sexual debut. The survival rate as virgins for Mexican origin Latinas was higher in 1995 and 2002 compared to non-Mexican Latinas but was almost the same in 2006–2008.
Conclusions: Religiosity had a protective association with sexual activity among Latina adolescents. The association of importance of religion with sexual activity has diminished from 1995 to 2008, however, whereas the importance of service attendance has remained stable. The influence of religion was more apparent among the Latinas of Mexican origin, but this greater influence also diminished by 2006–2008
Monitoring STI prevalence using telephone surveys and mailed urine specimens: a pilot test
Objectives: This pilot test assessed the feasibility of a cost effective population based approach to STI monitoring using automated telephone interviews, urine specimen collection kits sent out and returned by US Postal Service mail, and monetary incentives to motivate participation
Endolysosomal targeting of a clinical chlorin photosensitiser for light-triggered delivery of nano-sized medicines
A major problem with many promising nano-sized biotherapeutics including macromolecules is that owing to their size they are subject to cellular uptake via endocytosis, and become entrapped and then degraded within endolysosomes, which can significantly impair their therapeutic efficacy. Photochemical internalisation (PCI) is a technique for inducing cytosolic release of the entrapped agents that harnesses sub-lethal photodynamic therapy (PDT) using a photosensitiser that localises in endolysosomal membranes. Using light to trigger reactive oxygen species-mediated rupture of the photosensitised endolysosomal membranes, the spatio-temporal selectivity of PCI then enables cytosolic release of the agents at the selected time after administration so that they can reach their intracellular targets. However, conventional photosensitisers used clinically for PDT are ineffective for photochemical internalisation owing to their sub-optimal intracellular localisation. In this work we demonstrate that such a photosensitiser, chlorin e6, can be repurposed for PCI by conjugating the chlorin to a cell penetrating peptide, using bioorthogonal ligation chemistry. The peptide conjugation enables targeting of endosomal membranes so that light-triggered cytosolic release of an entrapped nano-sized cytotoxin can be achieved with consequent improvement in cytotoxicity. The photoproperties of the chlorin moiety are also conserved, with comparable singlet oxygen quantum yields found to the free chlorin
Adherence to Recommendations for Follow-up to Abnormal Pap Tests
OBJECTIVE: To evaluate whether timely adherence rates differ by race among women with abnormal Pap tests participating in a cost-free or reduced-cost program.
METHODS: Eligible subjects included women aged 47-64 years who received a referral for follow-up care after an abnormal Pap test from 1999 to 2002 in South Carolina (n=330). Adherence was measured as days to receipt of follow-up care after an abnormal Pap test. Cox proportional hazards modeling was used to estimate risk factors associated with time to adherence within 60 and 365 days by race.
RESULTS: African-American and non-Hispanic white women had similar adherence to follow-up. Among white women, those with high-grade lesions were less likely to adhere in a timely manner relative to those with low-grade lesions (hazard ratio 0.6, 95% confidence interval [CI] 0.4-1.0). For African-American women, rural residence (hazard ratio: 0.5, 95% CI 0.2-0.9) and history of abnormal Pap tests (hazard ratio 0.6, 95% CI 0.3-1.0) were associated with decreased adherence, whereas less education (hazard ratio 2.3, 95% CI 1.3-3.9) was associated with increased adherence.
CONCLUSION: Adherence rates do not differ by race. However, risk factors for adherence within race are variable. Interventions tailored to the differential needs of racial and ethnic groups may prove effective toward increasing timely adherence rates.
LEVEL OF EVIDENCE: I
Book Reviews
Essential Woodworker - Skills, Tools & Materials - reviewed by John EgglestonPower Tool Woodworking - reviewed by John EgglestonAir Brushing Automobiles - Tips, Techniques and Projects - reviewed by Steve SayerChair Seating - Techniques in Cane, Rush, Willow and Cords - reviewed by Steve SayerAuthentic Craftsmanship in Interior Design - reviewed by John EgglestonA tool for Learning - Some functions of art in the primary school - reviewed by Brian Allison";SKILLS"; - Video series for CDT - reviewed by David JonesStarting Embroidery - reviewed by Moira G SimpsonSantos Statures and Sculptures - reviewed by Brian AllisonCompendium of Lettering Workbooks - reviewed by John LancasterDrawn Thread Embroidery Starting Needlepoint Lace - reviewed by E. WishartBinche Lace - reviewed by E. Wishar
Flexible synthesis of cationic peptide-porphyrin derivatives for light-triggered drug delivery and photodynamic therapy
Efficient syntheses of cell-penetrating peptide-porphyrin conjugates are described using a variety of bioconjugation chemistries. This provides a flexible means to convert essentially hydrophobic tetrapyrolle photosensitisers into amphiphilic derivatives which are well-suited for use in light-triggered drug delivery by photochemical internalisation (PCI) and targeted photodynamic therapy (PDT)
Longitudinally diode-pumped Nd:YAG double-clad planar waveguide laser
We report the demonstration of a near-diffraction-limited, compact, diode-end-pumped double-clad planar waveguide Nd:YAG laser. Efficient laser operation was achieved for the three dominant Nd3+ transitions at 1.064µm 0.946µm, and 1.32µm, with TE polarised output powers of 1.33W, 0.57W, and 0.33W for the available output couplers. The output beam from the monolithic plane-plane laser cavity had measured M2 values of 1.0 and 1.8, perpendicular and parallel to the plane of the waveguide respectively
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