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https://www.readbyqxmd.com/read/29353129/keeping-it-together-and-falling-apart-women-s-dynamic-experience-of-birth
#1
Priscilla J Hall, Jennifer Whitman Foster, Kathryn M Yount, Bonnie Mowinski Jennings
OBJECTIVE: To explore the complexity of women's birth experiences in the context in which they occur and to describe how these influence women's well-being in labor. DESIGN: Qualitative method with a phenomenological approach, following the analysis principles of van Manen. PARTICIPANTS AND SETTING: Eight women from different ethnic and socioeconomic backgrounds in Atlanta, Georgia, United States with a recent, healthy birth were interviewed twice about their experience of the labor journey...
December 14, 2017: Midwifery
https://www.readbyqxmd.com/read/29352192/full-wave-electromagnetic-optimisation-of-corrugated-metallic-reectors-using-a-multigrid-approach
#2
Gökhan Karaova, Aşkın Altınoklu, Özgür Ergül
A multigrid optimisation strategy is introduced to design passive metallic reflectors with corrugated shapes. The strategy is based on using genetic algorithms at multiple grids and shaping the metal sheets, starting from coarse details to fine tunings. This corresponds to a systematic expansion of the related optimisation space, which is explored more efficiently in comparison to a brute-force optimisation without using grid. By employing the multilevel fast multipole algorithm to analyse the electromagnetic problems corresponding to optimisation trials, we obtain accurately designed reflectors that provide focussing abilities with very high performances at single and multiple locations...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29350776/the-existential-experience-of-everyday-life-with-systemic-lupus-erythematosus
#3
Janni Lisander Larsen, Elisabeth O C Hall, Søren Jacobsen, Regner Birkelund
AIM: To explore, from the perspective of women the nature of basic existential conditions while living with systemic lupus erythematosus. BACKGROUND: Systemic lupus erythematosus has an unpredictable disease course and is documented to cause an existential rearrangement of life. The significance of changes in existential conditions and related experiences are unclear in the context of nursing and women with systemic lupus erythematosus. DESIGN: A qualitative design guided by Van Manen's hermeneutic phenomenological methodology...
January 19, 2018: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/29350747/low-semen-quality-and-experiences-of-masculinity-and-family-building
#4
Randi Sylvest, Jeanette Krogh Fürbringer, Anja Pinborg, Emily Koert, Jeanette Bogstad, Kristine Loessl, Lisbeth Praetorius, Lone Schmidt
INTRODUCTION: Infertility is a concern for men and women.There is limited knowledge on how male factor infertility affects the couple in fertility treatment. The aim of this study was to explore how severe male factor infertility affects men's sense of masculinity, the couple's relationship and intentions about family formation. MATERIAL AND METHODS: Semi-structured qualitative interview study at the Fertility Clinic at Copenhagen University Hospital, Hvidovre, Denmark...
January 19, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29350004/-posterior-debridement-and-bone-grafting-via-intervertebral-space-combined-with-internal-fixation-for-the-treatment-of-lumbosacral-tuberculosis
#5
Wei-Wei Li, Jun Liu, Liang Duan, Da-Peng Duan, Wen-Bo Wei, Ya-Yi Fan
OBJECTIVE: To explore the clinical effects of posterior debridement, bone grafting via intervertebral space combined with internal fixation for the treatment of lumbosacral tuberculosis. METHODS: The clinical data of 32 patients with lumbosacral tuberculosis underwent the procedure of one-stage posterior intervertebral debridement, bone grafting and internal fixation from January 2007 to July 2013 were retrospectively analyzed. There were 17 males and 15 females, aged from 27 to 63 years with an average of (49...
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349852/what-really-matters-to-people-with-aphasia-when-it-comes-to-group-work-a-qualitative-investigation-of-factors-impacting-participation-and-integration
#6
Lucette Lanyon, Linda Worrall, Miranda Rose
BACKGROUND: Participation in a group environment is an inherently complex undertaking for people with aphasia. It involves engaging in multi-person interactions with other people who may have a range of communication strengths and strategies at their disposal. The potential challenges of community aphasia-group participation and practice has had limited attention in the research literature. Evidence from group users have primarily been drawn from the perspective of long-term members or those participating in highly specific and time-bound groups...
January 19, 2018: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/29349445/discovery-of-novel-diarylpyrimidines-as-potent-hiv-1-nnrtis-by-investigating-the-chemical-space-of-a-less-explored-hydrophobic-channel
#7
Zhongxia Zhou, Tao Liu, Dongwei Kang, Zhipeng Huo, Gaochan Wu, Dirk Daelemans, Erik De Clercq, Christophe Pannecouque, Peng Zhan, Xinyong Liu
A new series of diarylpyrimidines (DAPYs) were designed, synthesized and evaluated as novel HIV-1 NNRTIs to further explore the chemical space surrounding the "hydrophobic channel" of the NNRTI binding pocket (NNIBP), guided by the comprehensive analysis of X-ray structural biology data of HIV-1 RT/NNRTI complexes and molecular modeling. Encouragingly, most of the synthesized DAPYs were found to be active against the HIV-1 wild-type (WT) strain with EC50 values ranging from 3 nM to 63 nM, and displayed significantly reduced cytotoxicity compared with etravirine (ETV) and rilpivirine (RPV)...
January 19, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29347705/exploring-cluster-monte-carlo-updates-with-boltzmann-machines
#8
Lei Wang
Boltzmann machines are physics informed generative models with broad applications in machine learning. They model the probability distribution of an input data set with latent variables and generate new samples accordingly. Applying the Boltzmann machines back to physics, they are ideal recommender systems to accelerate the Monte Carlo simulation of physical systems due to their flexibility and effectiveness. More intriguingly, we show that the generative sampling of the Boltzmann machines can even give different cluster Monte Carlo algorithms...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347649/pressure-and-flow-of-exponentially-self-correlated-active-particles
#9
Cato Sandford, Alexander Y Grosberg, Jean-François Joanny
Microscopic swimming particles, which dissipate energy to execute persistent directed motion, are a classic example of a nonequilibrium system. We investigate the noninteracting Ornstein-Uhlenbeck Particle (OUP), which is propelled through a viscous medium by a force which is correlated over a finite time. We obtain an exact expression for the steady-state phase-space density of a single OUP confined by a quadratic potential, and use the result to explore more complex geometries, both through analytical approximations and numerical simulations...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347622/transport-regimes-spanning-magnetization-coupling-phase-space
#10
Scott D Baalrud, Jérôme Daligault
The manner in which transport properties vary over the entire parameter-space of coupling and magnetization strength is explored. Four regimes are identified based on the relative size of the gyroradius compared to other fundamental length scales: the collision mean free path, Debye length, distance of closest approach, and interparticle spacing. Molecular dynamics simulations of self-diffusion and temperature anisotropy relaxation spanning the parameter space are found to agree well with the predicted boundaries...
October 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347310/quantum-heat-engine-with-coupled-superconducting-resonators
#11
Ali Ü C Hardal, Nur Aslan, C M Wilson, Özgür E Müstecaplıoğlu
We propose a quantum heat engine composed of two superconducting transmission line resonators interacting with each other via an optomechanical-like coupling. One resonator is periodically excited by a thermal pump. The incoherently driven resonator induces coherent oscillations in the other one due to the coupling. A limit cycle, indicating finite power output, emerges in the thermodynamical phase space. The system implements an all-electrical analog of a photonic piston. Instead of mechanical motion, the power output is obtained as a coherent electrical charging in our case...
December 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347195/floquet-analysis-of-kuznetsov-ma-breathers-a-path-towards-spectral-stability-of-rogue-waves
#12
J Cuevas-Maraver, P G Kevrekidis, D J Frantzeskakis, N I Karachalios, M Haragus, G James
In the present work, we aim at taking a step towards the spectral stability analysis of Peregrine solitons, i.e., wave structures that are used to emulate extreme wave events. Given the space-time localized nature of Peregrine solitons, this is a priori a nontrivial task. Our main tool in this effort will be the study of the spectral stability of the periodic generalization of the Peregrine soliton in the evolution variable, namely the Kuznetsov-Ma breather. Given the periodic structure of the latter, we compute the corresponding Floquet multipliers, and examine them in the limit where the period of the orbit tends to infinity...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347136/linking-initial-microstructure-and-local-response-during-quasistatic-granular-compaction
#13
R C Hurley, J Lind, D C Pagan, M A Homel, M C Akin, E B Herbold
We performed experiments combining three-dimensional x-ray diffraction and x-ray computed tomography to explore the relationship between microstructure and local force and strain during quasistatic granular compaction. We found that initial void space around a grain and contact coordination number before compaction can be used to predict regions vulnerable to above-average local force and strain at later stages of compaction. We also found correlations between void space around a grain and coordination number, and between grain stress and maximum interparticle force, at all stages of compaction...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347116/orientational-dynamics-of-fluctuating-dipolar-particles-assembled-in-a-mesoscopic-colloidal-ribbon
#14
Helena Massana-Cid, Fernando Martinez-Pedrero, Andrejs Cebers, Pietro Tierno
We combine experiments and theory to investigate the dynamics and orientational fluctuations of ferromagnetic microellipsoids that form a ribbonlike structure due to attractive dipolar forces. When assembled in the ribbon, the ellipsoids display orientational thermal fluctuations with an amplitude that can be controlled via application of an in-plane magnetic field. We use video microscopy to investigate the orientational dynamics in real time and space. Theoretical arguments are used to derive an analytical expression that describes how the distribution of the different angular configurations depends on the strength of the applied field...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346988/liquid-part-of-the-phase-diagram-and-percolation-line-for-two-dimensional-mercedes-benz-water
#15
T Urbic
Monte Carlo simulations and Wertheim's thermodynamic perturbation theory (TPT) are used to predict the phase diagram and percolation curve for the simple two-dimensional Mercedes-Benz (MB) model of water. The MB model of water is quite popular for explaining water properties, but the phase diagram has not been reported till now. In the MB model, water molecules are modeled as two-dimensional Lennard-Jones disks, with three orientation-dependent hydrogen-bonding arms, arranged as in the MB logo. The liquid part of the phase space is explored using grand canonical Monte Carlo simulations and two versions of Wertheim's TPT for associative fluids, which have been used before to predict the properties of the simple MB model...
September 2017: Physical Review. E
https://www.readbyqxmd.com/read/29345999/cost-effectiveness-of-capping-freeways-for-use-as-parks-the-new-york-cross-bronx-expressway-case-study
#16
Sooyoung Kim, Zafar Zafari, Martine Bellanger, Peter Alexander Muennig
OBJECTIVES: To examine health benefits and cost-effectiveness of implementing a freeway deck park to increase urban green space. METHODS: Using the Cross-Bronx Expressway in New York City as a case study, we explored the cost-effectiveness of implementing deck parks. We built a microsimulation model that included increased exercise, fewer accidents, and less pollution as well as the cost of implementation and maintenance of the park. We estimated both the quality-adjusted life years gained and the societal costs for 2017...
January 18, 2018: American Journal of Public Health
https://www.readbyqxmd.com/read/29345477/an-exploratory-study-of-stress-and-coping-among-black-college-men
#17
Janelle R Goodwill, Daphne C Watkins, Natasha C Johnson, Julie Ober Allen
Research on coping mechanisms among Black Americans is robust, yet there is a dearth of studies that use qualitative approaches to examine coping specifically among young Black men. The current and historical landscape of race relations in the United States calls for additional concern and exploration of this topic. To fill gaps in this area, this study uncovered the ways Black college men cope with various stressors that impact their mental health. Eleven qualitative interviews were conducted with 18- to 25-year-old Black men enrolled at a college in the Midwest who participated in the Young Black Men, Masculinities, and Mental Health (YBMen) project...
January 18, 2018: American Journal of Orthopsychiatry
https://www.readbyqxmd.com/read/29345469/a-large-family-of-centrosymmetric-and-chiral-f-element-bearing-iodate-selenates-exhibiting-coordination-number-and-dimensional-reductions
#18
Meiying Qie, Jian Lin, Fang Kong, Mark A Silver, Zenghui Yue, Xiaomei Wang, Linjuan Zhang, Hongliang Bao, Thomas E Albrecht-Schmitt, Jian-Qiang Wang
The exploration of phase formation in the f-element-bearing iodate selenate system has resulted in 14 novel rare-earth-containing iodate selenates, Ln(IO3)(SeO4) (Ln = La, Ce, Pr, Nd; LnISeO-1), Ln(IO3)(SeO4)(H2O) (Ln = Sm, Eu; LnISeO-2), and Ln(IO3)(SeO4)(H2O)2·H2O (Ln = Gd, Dy, Ho, Er, Tm, Yb, Lu, Y; LnISeO-3), as well as two new thorium iodate selenates, Th(OH)(IO3)(SeO4)(H2O) (ThISeO-1) and Th(IO3)2(SeO4) (ThISeO-2). LnISeO-3 and ThISeO-2 crystallize in the chiral space group P212121, while LnISeO-1, LnISeO-2, and ThISeO-1 crystallize in the centrosymmetric space group P21/c...
January 18, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29345005/-there-s-no-acknowledgement-of-what-this-does-to-people-a-qualitative-exploration-of-mental-health-among-parents-of-children-with-critical-congenital-heart-defects
#19
Sarah Woolf-King, Emily Arnold, Sandra Weiss, David Teitel
AIMS AND OBJECTIVES: The purpose of this study was to explore the psychological impact of parenting a child with a critical congenital heart defect (CHD), and the feasibility and acceptability of integrating psychological services into pediatric cardiology care. BACKGROUND: Children with critical CHD are at an increased risk for long-term behavioral, social, and emotional difficulties. Data suggest that this risk is partially attributable to parental mental health, which is a stronger predictor of long-term behavioral problems in CHD children than disease-specific and surgical factors...
January 18, 2018: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/29340448/-uses-of-madness-towards-the-recognition-of-new-interpretations-of-human-suffering
#20
Miguel Salas Soneira
This article addresses the controversy associated with the construct schizophrenia/psychosis/madness, indicating the need to acknowledge the multiplicity of experiences and interpretations which arise through the use of the construct. The plurality and complexity intrinsic to the phenomenon, the discrepancies in its possible meanings and the value of first-hand experience are indicated as aspects whose recognition is indispensable to both understanding suffering and confronting it socio-educationally. Using interviews carried out in September 2013 and May 2014 with six people diagnosed at least with schizophrenia, who gave their informed consent to participate, these dimensions are explored...
October 2017: Salud Colectiva
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