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Grounded theory

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https://www.readbyqxmd.com/read/28646749/mutually-facilitated-co-transport-of-two-different-viruses-through-reactive-porous-media
#1
Shuang Xu, Ramesh Attinti, Elizabeth Adams, Jie Wei, Kalmia Kniel, Jie Zhuang, Yan Jin
In this study, we quantified transport and retention behaviors of a human pathogenic virus (Adenovirus 41, abbreviated as Ad-41) and a model bacteriophage (ϕX174) through metal oxide-removed and goethite-coated sand under saturated flow conditions. Two sets of bench scale column experiments were conducted: transport of each type of viruses alone and co-transport of both viruses. All experiments were conducted at pH 7.5 using 2 mM artificial ground water (AGW) buffer as background solution. Experimental results revealed that goethite-coated sand (i...
June 18, 2017: Water Research
https://www.readbyqxmd.com/read/28645270/qualitative-modification-and-development-of-patient-and-caregiver-reported-outcome-measures-for-iron-chelation-therapy
#2
Erica G Horodniceanu, Vasudha Bal, Harman Dhatt, John A Carter, Vicky Huang, Kathryn Lasch
BACKGROUND: Compliance, palatability, gastrointestinal (GI) symptom, and treatment satisfaction patient- and observer-reported outcome (PRO, ObsRO) measures were developed/modified for patients with transfusion-dependent anemias or myelodysplastic syndrome (MDS) requiring iron chelation therapy (ICT). METHODS: This qualitative cross-sectional observational study used grounded theory data collection and analysis methods and followed PRO/ObsRO development industry guidance...
June 23, 2017: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/28644652/topological-insulators-in-amorphous-systems
#3
Adhip Agarwala, Vijay B Shenoy
Much of the current understanding of topological insulators, which informs the experimental search for topological materials and systems, is based on crystalline band theory, where local electronic degrees of freedom at different crystal sites hybridize with each other in ways that produce nontrivial topology. Here we provide a novel theoretical demonstration of realizing topological phases in amorphous systems, as exemplified by a set of sites randomly located in space. We show this by constructing hopping models on such random lattices whose gapped ground states are shown to possess nontrivial topological nature (characterized by Bott indices) that manifests as quantized conductances in systems with a boundary...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644647/quasi-low-dimensional-electron-gas-with-one-populated-band-as-a-testing-ground-for-time-dependent-density-functional-theory-of-mesoscopic-systems
#4
Vladimir U Nazarov
We find an exact analytical solution to the exchange-only time-dependent density-functional theory (TDDFT) problem for a significant class of quasi-low-dimensional (QLD) materials: QLD electron gas with only one band filled in the direction perpendicular to the layer or wire. The theory yields the TD exchange potential as an explicit nonlocal operator of the TD spin density. The dressed interband (image states) excitation spectra of quasi-two-dimensional electron gas are obtained, while the comparison with the Kohn-Sham transitions provides insights into the qualitative and quantitative role of the many-body interactions...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28643520/main-plant-extracts-active-properties-effective-on-scopolamine-induced-memory-loss
#5
Ioana-Miruna Balmus, Alin Ciobica
Alzheimer's disease leads to progressive cognitive function loss, which may impair both intellectual capacities and psychosocial aspects. Although the current knowledge points to a multifactorial character of Alzheimer's disease, the most issued pathological hypothesis remains the cholinergic theory. The main animal model used in cholinergic theory research is the scopolamine-induced memory loss model. Although, in some cases, a temporary symptomatic relief can be obtained through targeting the cholinergic or glutamatergic neurotransmitter systems, no current treatment is able to stop or slow cognitive impairment...
January 1, 2017: American Journal of Alzheimer's Disease and Other Dementias
https://www.readbyqxmd.com/read/28643399/distributed-health-literacy-among-people-living-with-type-2-diabetes-in-portugal-defining-levels-of-awareness-and-support
#6
Liliana Abreu, João Arriscado Nunes, Peter Taylor, Susana Silva
This study embraces a patient-centred and narrative-oriented notion of health literacy, exploring how social networks and personal experiences constitute distributed health literacy (DHL) by mapping out health literacy mediators of each individual and how they enable self-management skills and knowledge of health conditions. Semi-structured interviews with 26 patients with type 2 diabetes were conducted in a Primary Care Center of Porto (Portugal) from October 2014 to December 2015. Data were collected based on McGill Illness Narrative Interview (MINI)...
June 22, 2017: Health & Social Care in the Community
https://www.readbyqxmd.com/read/28643344/optimization-and-transferability-of-non-electrostatic-repulsion-in-the-polarizable-density-embedding-model
#7
Dalibor Hršak, Jógvan Magnus Haugaard Olsen, Jacob Kongsted
Embedding techniques in combination with response theory represent a successful approach to calculate molecular properties and excited states in large molecular systems such as solutions and proteins. Recently, the polarizable embedding model has been extended by introducing explicit electronic densities of the molecules in the nearest environment, resulting in the polarizable density embedding (PDE) model. This improvement provides a better description of the intermolecular interactions at short distances...
June 22, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28642944/magnetic-circular-dichroism-of-ucl6-in-the-ligand-to-metal-charge-transfer-spectral-region
#8
Frédéric Gendron, Valerie E Fleischauer, Thomas J Duignan, Brian L Scott, Matthias W Löble, Samantha K Cary, Stosh A Kozimor, Hélène Bolvin, Michael L Neidig, Jochen Autschbach
We present a combined ab initio theoretical and experimental study of the magnetic circular dichroism (MCD) spectrum of the octahedral UCl6(-) complex ion in the UV-Vis spectral region. The ground state is an orbitally non-degenerate doublet E5/2u and the MCD is a -term spectrum caused by spin-orbit coupling. Calculations of the electronic spectrum at various levels of theory indicate that differential dynamic electron correlation has a strong influence on the energies of the dipole-allowed transitions and the envelope of the MCD spectrum...
June 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28642431/quantum-and-isotope-effects-in-lithium-metal
#9
Graeme J Ackland, Mihindra Dunuwille, Miguel Martinez-Canales, Ingo Loa, Rong Zhang, Stanislav Sinogeikin, Weizhao Cai, Shanti Deemyad
The crystal structure of elements at zero pressure and temperature is the most fundamental information in condensed matter physics. For decades it has been believed that lithium, the simplest metallic element, has a complicated ground-state crystal structure. Using synchrotron x-ray diffraction in diamond anvil cells and multiscale simulations with density functional theory and molecular dynamics, we show that the previously accepted martensitic ground state is metastable. The actual ground state is face-centered cubic (fcc)...
June 23, 2017: Science
https://www.readbyqxmd.com/read/28641929/initiation-and-engagement-with-methadone-treatment-among-pregnant-and-postpartum-women
#10
Kristin M Mattocks, Robin Clark, Linda Weinreb
PURPOSE: The purpose of this study was to explore perceptions of experiences and challenges with methadone maintenance treatment (MMT) and obstetrical care among pregnant and postpartum women enrolled in a methadone maintenance program. RESEARCH DESIGN: The study featured a grounded theory approach including two focus groups with pregnant and postpartum methadone users at a methadone maintenance clinic in Worcester, Massachusetts. Two research team members conducted and recorded focus groups, which took approximately 45 minutes to 1 hour...
June 19, 2017: Women's Health Issues: Official Publication of the Jacobs Institute of Women's Health
https://www.readbyqxmd.com/read/28641179/quantitative-study-of-the-proportion-of-the-pore-volume-of-human-fluorotic-enamel-filled-by-resin-infiltrant
#11
Frederico Barbosa de Sousa, Isabel Maria Porto Lelis, Regina Célia Bressan Queiroz Figueiredo, Andressa Cavalcanti Pires, Raquel Fernanda Gerlach
AIM: Capillarity theory predicts that the pore volume infiltrated by a liquid in a body with tubular capillaries is directly proportional to the capillary radius. The expected volume available for infiltration is the loosely bound water volume, which can be related to the capillary radii. We tested the hypothesis that the proportion of the pore volume infiltrated by resin infiltrant (Vratio(resin)) is correlated and agrees with the proportion of the pore volume with loosely bound water ( [Formula: see text] )...
June 15, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28641174/new-insights-into-the-oleate-flotation-response-of-feldspar-particles-of-different-sizes-anisotropic-adsorption-model
#12
Longhua Xu, Jia Tian, Houqin Wu, Wei Deng, Yaohui Yang, Wei Sun, Zhiyong Gao, Yuehua Hu
The anisotropic adsorption of sodium oleate (NaOL) on feldspar surfaces was investigated to elucidate the different flotation properties of feldspar particles of four different size ranges. Microflotation experiments showed that the feldspar flotation recovery of particles with sizes spanning different ranges decreased in the order 0-19>19-38>45-75>38-45μm. Zeta potential and FTIR measurements showed that NaOL was chemically adsorbed on the Al sites of the feldspar surface. The anisotropic surface energies and broken bond densities estimated by density functional theory calculations showed that, although feldspar mostly exposed (010) and (001) surfaces, only the (001) surfaces contained the Al sites needed for NaOL adsorption...
June 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28639481/supporting-decision-making-by-a-health-promotion-programme-experiences-of-persons-ageing-in-the-context-of-migration
#13
Emmelie Barenfeld, Susanne Gustafsson, Lars Wallin, Synneve Dahlin-Ivanoff
This study is part of the Promoting Aging Migrants' Capabilities programme that applied person-centred group meetings and one individual home visit to prolong independence in daily activities among people ≥70 years who had migrated to Sweden from Finland or the Western Balkan region. With the purpose to understand programme outcomes, the study aimed to explore the participants' everyday experiences of using health-promoting messages exchanged during the programme. Using a grounded theory approach, 12 persons aged 70-83 years were interviewed six months to one year after their participation in the programme...
December 2017: International Journal of Qualitative Studies on Health and Well-being
https://www.readbyqxmd.com/read/28638813/impractical-cme-programs-influential-parameters-in-iran
#14
Seyed Aliakbar Faghihi, Hamid Reza Khankeh, Seyed Jalil Hosseini, Seyed Kamran Soltani Arabshahi, Zahra Faghih, Mandana Shirazi
Background: Traditional approaches in Continuing Medical Education (CME) appear to be ineffective in any improvement of the patients' care, reducing the medical errors, and/or altering physicians' behaviors. However, they are still executed by the CME providers, and are popular among the majority of the physicians. In this study, we aimed to explore the parameters involved in the degree of effectiveness of CME program in Iran. Methods: In this study, 31 participants, consisting of general practitioners, CME experts and providers were recruited to participate in in-depth interviews and field observations concerning experiences with CME...
2017: Medical Journal of the Islamic Republic of Iran
https://www.readbyqxmd.com/read/28638771/electronic-%C3%AF-to-%C3%AF-excitations-of-rhodamine-dyes-exhibit-a-time-dependent-kohn-sham-theory-cyanine-problem
#15
Barry Moore, Robert L Schrader, Karol Kowalski, Jochen Autschbach
The longest-wavelength π-to-π* electronic excitations of rhodamine-like dyes (RDs) with different group 16 heteroatoms (O, S, Se, Te) have been investigated. Time-dependent Kohn-Sham theory (TDKST) calculations were compared with coupled-cluster (CC) and equations-of-motion (EOM) CC results for π-to-π* singlet and triplet excitations. The RDs exhibit characteristics in the TDKST calculations that are very similar to previously investigated cyanine dyes, in the sense that the singlet energies obtained with nonhybrid functionals are too high compared with the CC results at the SD(T) level...
June 2017: ChemistryOpen
https://www.readbyqxmd.com/read/28638509/resident-experiences-with-implementation-of-the-i-pass-handoff-bundle
#16
Maitreya Coffey, Kelly Thomson, Shelly-Anne Li, Zia Bismilla, Amy J Starmer, Jennifer K O'Toole, Rebecca L Blankenburg, Glenn Rosenbluth, F Sessions Cole, Clifton E Yu, Jennifer H Hepps, Theodore C Sectish, Nancy D Spector, Rajendu Srivastava, April D Allen, Sanjay Mahant, Christopher P Landrigan
BACKGROUND: The I-PASS Handoff Study found that introduction of a handoff bundle (handoff and teamwork training for residents, a mnemonic, a handoff tool, a faculty development program, and a sustainability campaign) at 9 pediatrics residency programs was associated with improved communication and patient safety. OBJECTIVE: This parallel qualitative study aimed to understand resident experiences with I-PASS and to inform future implementation and sustainability strategies...
June 2017: Journal of Graduate Medical Education
https://www.readbyqxmd.com/read/28637605/-i-need-to-do-another-course-italian-physiotherapists-knowledge-and-beliefs-when-assessing-psychosocial-factors-in-patients-presenting-with-chronic-low-back-pain
#17
Giacomo Zangoni, Oliver P Thomson
OBJECTIVES: Psychosocial factors play an important role in the development and subsequent recovery of individuals suffering from chronic low back pain (CLBP). The study explored physiotherapists' personal beliefs and knowledge about the biopsychosocial model and the different ways they assess and manage psychosocial factors in patients presenting with CLBP. METHODS: Qualitative research design using semi-structured interviews and a constructivist grounded theory approach to data collection and analysis...
February 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28637200/an-emerging-theoretical-model-of-music-therapy-student-development
#18
Abbey L Dvorak, Eugenia Hernandez-Ruiz, Sekyung Jang, Borin Kim, Megan Joseph, Kori E Wells
Background: Music therapy students negotiate a complex relationship with music and its use in clinical work throughout their education and training. This distinct, pervasive, and evolving relationship suggests a developmental process unique to music therapy. Objective: The purpose of this grounded theory study was to create a theoretical model of music therapy students' developmental process, beginning with a study within one large Midwestern university. Methods: Participants (N = 15) were music therapy students who completed one 60-minute intensive interview, followed by a 20-minute member check meeting...
June 20, 2017: Journal of Music Therapy
https://www.readbyqxmd.com/read/28636359/relativistic-approximations-to-paramagnetic-nmr-chemical-shift-and-shielding-anisotropy-in-transition-metal-systems
#19
Syed Awais Rouf, Jiří Mareš, Juha Vaara
We apply approximate relativistic methods to calculate the magnetic property tensors, i.e., the g-tensor, zero-field splitting (ZFS) tensor (D), and hyperfine coupling (HFC) tensors, for the purpose of constructing paramagnetic nuclear magnetic resonance (pNMR) shielding tensors. The chemical shift and shielding anisotropy are calculated by applying a modern implementation of the classic Kurland-McGarvey theory (J. Magn. Reson. 1970, 2, 286), which formulates the shielding tensor in terms of the g- and HFC tensors obtained for the ground multiplet, in the case of higher than doublet multiplicity defined by the ZFS interaction...
June 21, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28635436/changes-in-the-nature-and-intensity-of-stress-following-employment-among-people-with-severe-mental-illness-receiving-individual-placement-and-support-services-an-exploratory-qualitative-study
#20
Christine Besse, Daniel Poremski, Vincent Laliberté, Eric Latimer
BACKGROUND: Most people with severe mental illness (SMI) want to work. Individual placement and support (IPS) programs have proven effective in helping them obtain and keep competitive jobs. Yet, practitioners often fear that competitive jobs might be too stressful. AIMS: To explore how the nature and intensity of stress experienced by IPS clients changed after the transition from looking for work to being employed. METHODS: Semi-structured interviews explored the experiences of 16 clients of an IPS program who had recently been competitively employed...
March 1, 2017: Journal of Mental Health
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