Establishment of an optimum heat treatment for use in 718 alloy bellows and gimbal structures Semiannual report, 1 Aug. 1965 - 28 Feb. 1966

Hot cracking tendencies evaluation of fusion welds of Inconel 718 alloy after different heat treatment

Side forces on a tangent ogive forebody with a fineness ratio of 2.5 at high angles of attack and low speed

A wind tunnel study to determine the subsonic aerodynamic characteristics, at high angles of attack, of a tangent ogive forebody with a fineness ratio of 2.5, is reported. Static longitudinal and lateral-directional stability data were obtained at Reynolds numbers ranging from 0.4 x 1 million to 3.7 x 1 million (based on base diameter) at a Mach number of 0.25. Angle of attack was varied from 36 deg to 88 deg at zero sideslip. It was found that at low Reynolds numbers the forebody does not have a side force att high angles of attack; however, at Reynolds numbers above about 2 x 1 million, a side force occurs in the angle of attack range from 45 deg to 80 deg. The maximum side force is as large as the maximum normal force. The maximum normal force coefficient varies between 1.0 and 2.0 over the Reynolds number range tested and occurs at angles of attack near 65 deg

Coherent nu-N scattering and the search for physics beyond the standard model

We focus in future proposals to measure coherent neutrino-nuclei scattering and we show that such kind of experiments are very sensitive to nonstandard neutrino interactions with quarks. First in a model independent parametrization and then we focused in particular models such as leptoquarks and models with extra neutral gauge bosons and with R-parity breaking interactions. We show that in all these three different types of new physics it is possible to obtain competitive bounds to those of future collider experiments. For the particular case of leptoquarks we found that the expected sensitivity to the coupling and mass for most of the future experimental setups is quite better than the current constraints.Comment: 6 pages, 1 Figure, Talk given at 11th Mexican Workshop on Particles and Fields 2007, Tuxtla Gutierrez, Mexico, 7-12 Nov 200

Immature embryo rescue of grapevine (Vitis vinifera L.) after an extended period of seed trace culture

In this work the effect of time on in vitro culture of seed traces is evaluated. Without changing media, there was no decline in the number of rescued embryos for any cross within and up to 210 d of culture. After that period a decline was shown for varieties producing abundant callus from the external tegument. Direct germination of embryos increased in all crosses except for Blush Seedless x 73049, which stopped direct germination after 90 d. The polyembryony was advantageous for the cross Superior Seedless x Dawn Seedless, because it increased the percentage of normal plantlets. Multiple embryos showed a higher capacity to germinate in all cases. More embryos were obtained by excision and they presented a higher percentage of normal plantlets in comparison to plantlets obtained by embryos germinated directly. Embryos from the varieties Ruby Seedless, Blush Seedless and Bronx Seedless mainly produced normal plantlets while Crimson Seedless, Superior Seedless and Fantasy Seedless embryos mostly produced abnormal plantlets.

Disclosure of Depression in Primary Care: A Qualitative Study of Women’s Perceptions

Background Health care providers are better able to diagnose depression and initiate treatment when patients disclose symptoms. However, many women are reluctant to disclose depressive symptoms. Little is known about the experience of disclosing depression symptoms in primary care among racially and ethnically diverse women across the life course. We qualitatively explore experiences of disclosure of depressive symptoms to primary care providers among self-identified African American, Hispanic and non-Hispanic White women. Methods Twenty-four women with depression were recruited for open-ended interviews. We recorded, transcribed, and coded interviews using inductive content analysis. Findings Two distinct domains emerged: participant factors that hinder and facilitate disclosure and provider cues that encourage and dissuade discussing depression. Participants described perceptions about primary care not being the appropriate place, fear of not having a choice in treatment decisions, and the emotional cost of retelling as impediments to disclosure; perceiving an increased likelihood of getting help was described as a facilitator. Women identified provider behaviors of asking about depression and showing concern as facilitators, and provider time constraints as a barrier to disclosure. Conclusions Women perceive that primary care is not the appropriate place to disclose depression symptoms. Increased public education about behavioral health management in primary care, as well as more robust integration of the two, is needed. Efforts to improve depression disclosure in primary care must also encompass systematic use of depression screening tools and implementation of targeted interventions to cultivate provider empathy