216 research outputs found
The Preparation of Fine Particulate for Electron Microscopy Investigations Using Dental Amalgam
Samples of high Tc superconductors and metal powders have been prepared for Scanning and Transmission Electron Microscopy examination by a novel method. Dental amalgam, commonly used for filling cavities in teeth by dentists, has been used as a binding agent to hold the sample particulate together during sample preparation. The amalgam was pressed into a small rod 3 mmn in diameter and samples were prepared by cutting slices from the rod followed by mechanical grinding and ion milling to perforation. This technique is extremely easy and offers several advantages over other preparation methods. Experiments revealed difficulties due to preferential sputtering yield, but generally these could be overcome and good thermal and electrical properties of the amalgam partially offset the former inconveniences. It should be possible to use this technique for any number of materials, including ceramic materials and small non-spherical particulate
Liquid metal extraction of Nd from NdFeB magnet scrap
This research involves using molten magnesium (Mg) to remove neodymium (Nd) from NdFeB magnet scrap by diffusion. Mg was melted over pieces of NdFeB scrap and held at temperatures in the range 675β705 Β°C for 2β8 h. The Mg was allowed to solidify, and the castings were then sectioned and characterized using scanning electron microscopy, x-ray diffraction, and chemical analysis. Nd was found to have diffused out of the solid scrap into the molten Mg. The thickness of the diffusion layer was measured, the diffusion of Nd through the NdFeB scrap into liquid Mg was described, and the diffusion coefficient of Nd in liquid Mg was estimated
Synthesis and Processing of powders and wires
Sintered powders and wires of superconducting have been fabricated
under a variety of conditions in order to determine details of the diffusion of
the into and to study the types of defects that arise during growth.
For samples prepared by exposure of boron to vapor at , the
conversion of particles of less than size particles to is
complete in about . The lattice parameters of the phase determined
from X-ray are independent of the starting stoichiometry and the time of
reaction. Wire segments of with very little porosity have been produced
by reacting diameter boron fibers in an atmosphere of excess
vapor at . Defects in the reacted fibers are predominantly the
voids left as the boron is converted to
ΠΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ Π³ΠΈΠ΄ΡΠΎΠ³Π°Π·ΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΠΈ ΡΠ΅ΠΏΠ»ΠΎΠΌΠ°ΡΡΠΎΠΏΠ΅ΡΠ΅Π½ΠΎΡΠ° Π² ΡΠ΄Π²ΠΈΠ³ΠΎΠ²ΡΡ ΡΠ΅ΡΠ΅Π½ΠΈΡΡ ΡΠ΅ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ ΡΠ»ΠΎΠΆΠ½ΡΡ Π²ΡΠ·ΠΊΠΈΡ ΡΡΠ΅Π΄: ΠΈΠ΄Π΅ΠΈ, ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ, ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Ρ ΠΏΡΠΎΠ³Π½ΠΎΠ·Π° ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ²
Π Π½Π°ΡΡΠΎΡΡΠ΅ΠΉ ΡΠ°Π±ΠΎΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ ΠΊΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠΉ Π°Π½Π°Π»ΠΈΠ· ΠΏΡΠΎΠ±Π»Π΅ΠΌ, ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² ΠΈ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ² ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΡΠ΅ΡΠ΅Π½ΠΈΠΉ ΡΠ»ΠΎΠΆΠ½ΡΡ
ΠΏΠΎ ΡΡΡΡΠΊΡΡΡΠ΅/ΡΠ΅ΠΎΠ»ΠΎΠ³ΠΈΠΈ Π²ΡΠ·ΠΊΠΈΡ
ΡΡΠ΅Π΄ Π² ΡΡΡΠ±ΠΎΠΏΡΠΎΠ²ΠΎΠ΄Π½ΡΡ
ΡΠΈΡΡΠ΅ΠΌΠ°Ρ
(ΡΠ·Π»Π°Ρ
ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ Π½Π΅ΡΡΠ΅Π³Π°Π·ΠΎΠ²ΠΎΠΉ, Ρ
ΠΈΠΌΠΈΠΊΠΎ-ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΈ ΡΠ΅ΠΏΠ»ΠΎ-ΡΠ½Π΅ΡΠ³Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠΎΠΌΡΡΠ»Π΅Π½Π½ΠΎΡΡΠΈ), ΠΈΡΠΏΡΡΡΠ²Π°ΡΡΠΈΡ
Π½Π° ΡΠ΅Π±Π΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π΅ΠΈΠ·ΠΎΡΠ΅ΡΠΌΠΈΡΠ½ΠΎΡΡΠΈ, Π½Π΅ΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠ½ΠΎΡΡΠΈ, ΠΏΠ΅ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΡΡΠΈ ΡΠ΅ΠΏΠ»ΠΎ- ΠΈ ΡΠ΅ΠΎΡΠΈΠ·ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ², Π²Π½Π΅ΡΠ½ΠΈΡ
ΠΏΠΎΠ»Π΅ΠΉ ΠΎΡ Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΠΈΠ½Π΅ΡΡΠΈΠΎΠ½Π½ΡΡ
ΠΈ Π³ΡΠ°Π²ΠΈΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠΈΠ», ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ ΡΠΎΡΠΌΡ ΠΏΠΎΠΏΠ΅ΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΠ΅ΡΠ΅Π½ΠΈΡ ΠΏΡΠΎΡΠΎΡΠ½ΠΎΠΉ ΡΠ°ΡΡΠΈ. ΠΡΠΎΠ±ΠΎΠ΅ Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅ ΡΠ΄Π΅Π»ΡΠ΅ΡΡΡ: ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠΌ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡΠΎΠ΄ΠΎΠ² (ΡΡΠΆΠ΅Π»ΡΡ
Π½Π΅ΡΡΠ΅ΠΉ, ΠΌΠ°ΡΠ΅Π») ΠΏΡΠΈ ΠΈΡ
ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΊΠ΅ Π½Π° ΡΡΠ°ΡΡΠΊΠ°Ρ
ΡΡΡΠ±/ΠΊΠ°Π½Π°Π»ΠΎΠ² Ρ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΡΠΌ ΡΠ΅ΠΏΠ»ΠΎΠΌΠ°ΡΡΠΎΠΎΠ±ΠΌΠ΅Π½ΠΎΠΌ; ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΌΠ΅Ρ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΡ ΡΠ½Π΅ΡΠ³ΠΎΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΈ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΠΈ ΡΡΠ½ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ, ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ ΠΎΠΏΡΡΠ° Π°Π½Π°Π»ΠΈΠ·Π° ΠΏΡΠΎΠ±Π»Π΅ΠΌ ΠΊΠΎΡΡΠΎΠ·ΠΈΠΈ ΡΠ½Π΅ΡΠ³ΠΎΠ½Π°ΠΏΡΡΠΆΠ΅Π½Π½ΡΡ
ΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ², Π° ΡΠ°ΠΊΠΆΠ΅ ΠΈΡ
ΠΎΡΠΈΡΡΠΊΠΈ ΠΎΡ Π·Π°Π³ΡΡΠ·Π½Π΅Π½ΠΈΠΉ
Chronology of latest Pleistocene mountain glaciation in the western Wasatch Mountains, Utah, U.S.A.
Mode structure and ray dynamics of a parabolic dome microcavity
We consider the wave and ray dynamics of the electromagnetic field in a
parabolic dome microcavity. The structure of the fundamental s-wave involves a
main lobe in which the electromagnetic field is confined around the focal point
in an effective volume of the order of a cubic wavelength, while the modes with
finite angular momentum have a structure that avoids the focal area and have
correspondingly larger effective volume. The ray dynamics indicates that the
fundamental s-wave is robust with respect to small geometrical deformations of
the cavity, while the higher order modes are associated with ray chaos and
short-lived. We discuss the incidence of these results on the modification of
the spontaneous emission dynamics of an emitter placed in such a parabolic dome
microcavity.Comment: 50 pages, 17 figure
The Economic Resource Receipt of New Mothers
U.S. federal policies do not provide a universal social safety net of economic support for women during pregnancy or the immediate postpartum period but assume that employment and/or marriage will protect families from poverty. Yet even mothers with considerable human and marital capital may experience disruptions in employment, earnings, and family socioeconomic status postbirth. We use the National Survey of Families and Households to examine the economic resources that mothers with children ages 2 and younger receive postbirth, including employment, spouses, extended family and social network support, and public assistance. Results show that many new mothers receive resources postbirth. Marriage or postbirth employment does not protect new mothers and their families from poverty, but education, race, and the receipt of economic supports from social networks do
Development and validation of a questionnaire to measure moral distress in community pharmacists
The Author(s) 2016. . This article is published with open access at Springerlink.com This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Jayne L. Astbury, and Cathal T. Gallagher, 'Development and validation of a questionnaire to measure moral distress in community pharmacists', International Journal of Clinical Pharmacy (2017) Vol 39(1): 156-164, first published online on 22 December 2016, the version of record is available on line via doi: 10.1007/s11096-016-0413-3 Funding for this work was provided by Pharmacy Research UK (PRUK).Background Pharmacists work within a highly-regulated occupational sphere, and are bound by strict legal frameworks and codes of professional conduct. This regulatory environment creates the potential for moral distress to occur due to the limitations it places on acting in congruence with moral judgements. Very little research regarding this phenomenon has been undertaken in pharmacy: thus, prominent research gaps have arisen for the development of a robust tool to measure and quantify moral distress experienced in the profession. Objective The aim of this study was to develop an instrument to measure moral distress in community pharmacists. Setting Community pharmacies in the United Kingdom. Method This study adopted a three-phase exploratory sequential mixed-method design. Three semi-structured focus groups were then conducted to allow pharmacists to identify and explore scenarios that cause moral distress. Each of the identified scenarios were developed into a statement, which was paired with twin seven-point Likert scales to measure the frequency and intensity of the distress, respectively. Content validity, reliability, and construct validity were all tested, and the questionnaire was refined. Main outcome measure The successful development of the valid instrument for use in the United Kingdom. Results This research has led to the development of a valid and reliable instrument to measure moral distress in community pharmacists in the UK. The questionnaire has already been distributed to a large sample of community pharmacists. Conclusion Results from this distribution will be used to inform the formulation of coping strategies for dealing with moral distress.Peer reviewedFinal Published versio
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