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https://www.readbyqxmd.com/read/28220179/polarity-and-growth-directions-in-sn-seeded-gasb-nanowires
#1
Reza R Zamani, Sepideh Gorji Ghalamestani, Jie Niu, Niklas Sköld, Kimberly A Dick
We here investigate the growth mechanism of Sn-seeded GaSb nanowires and demonstrate how the seed particle and its dynamics at the growth interface of the nanowire determine the polarity, as well as the formation of structural defects. We use aberration-corrected scanning transmission electron microscopy imaging methodologies to study the interrelationship between the structural properties, i.e. polarity, growth mechanism, and formation of inclined twin boundaries in pairs. Moreover, the optical properties of the Sn-seeded GaSb nanowires are examined...
February 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/28220100/season-and-weather-effects-on-travel-related-mood-and-travel-satisfaction
#2
Dick Ettema, Margareta Friman, Lars E Olsson, Tommy Gärling
This study examines the effects of season and weather on mood (valence and activation) and travel satisfaction (measured by the Satisfaction with Travel Scale). Analyses are presented of 562 time-sampled morning commutes to work made by 363 randomly sampled people in three different Swedish cities asking them to use smartphones to report their mood in their home before and directly after the commutes. These reports as well as satisfaction with the commute obtained in summer and winter are linked to weather data and analyzed by means of fixed-effects regression analyses...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28214510/temperature-rise-and-parasitic-infection-interact-to-increase-the-impact-of-an-invasive-species
#3
Ciaran Laverty, David Brenner, Christopher McIlwaine, Jack J Lennon, Jaimie T A Dick, Frances E Lucy, Keith A Christian
Invasive species often detrimentally impact native biota, eg through predation, but predicting such impacts is difficult due to multiple and perhaps interacting abiotic and biotic context dependencies. Higher mean and peak temperatures, together with parasites, might influence the impact of predatory invasive host species additively, synergistically or antagonistically. Here, we apply the comparative functional response methodology (relationship between resource consumption rate and resource supply) in one experiment and conduct a second scaled-up mesocosm experiment to assess any differential predatory impacts of the freshwater invasive amphipod Gammarus pulex, when uninfected and infected with the acanthocephalan Echinorhynchus truttae, at three temperatures representative of current and future climate...
February 15, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28213765/association-between-signs-and-symptoms-of-bruxism-and-presence-of-tori-a-systematic-review
#4
Eduardo Bertazzo-Silveira, Juliana Stuginski-Barbosa, André Luís Porporatti, Bruce Dick, Carlos Flores-Mir, Daniele Manfredini, Graziela De Luca Canto
OBJECTIVE: This systematic review aims to answer the question: "Is there an association between any specific signs and symptoms of bruxism and the presence of tori?" MATERIAL AND METHODS: Observational studies, which evaluated the association between signs and symptoms of bruxism and tori, were selected. Signs and symptoms of bruxism (such as teeth grinding, jaw clenching, abnormal tooth wear, facial muscle hypertrophy, pain, or fatigue) had to be determined by questionnaire or anamnesis and tori within clinical assessment...
February 17, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28213124/reciprocal-relationships-between-substance-use-and-disorders-and-suicidal-ideation-and-suicide-attempts-in-the-collaborative-study-of-the-genetics-of-alcoholism
#5
Arpana Agrawal, Rebecca Tillman, Richard A Grucza, Elliot C Nelson, Vivia V McCutcheon, Lauren Few, Kenneth R Conner, Michael T Lynskey, Danielle M Dick, Howard J Edenberg, Victor M Hesselbrock, John R Kramer, Samuel Kuperman, John I Nurnberger, Marc A Schuckit, Bernice Porjesz, Kathleen K Bucholz
BACKGROUND: Substance use and misuse and suicidal thoughts and behaviors tend to co-occur. The purpose of this study was to examine whether (a) suicidal ideation and attempt are related to onset of alcohol, nicotine and cannabis use and dependence; (b) early use of alcohol, nicotine and cannabis is associated with onset of suicidal ideation and attempt; and (c) whether these associations persist while controlling for covariates, such as family history of alcohol problems, major depression and other internalizing and externalizing disorders...
February 3, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28211567/isolation-precautions-use-for-multidrug-resistant-organism-infection-in-nursing-homes
#6
Catherine C Cohen, Andrew Dick, Patricia W Stone
OBJECTIVES: To examine factors associated with isolation precaution use in nursing home (NH) residents with multidrug-resistant organism (MDRO) infection. DESIGN: Retrospective, cross-sectional analysis. SETTING: Nursing homes with Centers for Medicare and Medicaid Services' certification from October 2010 to December 2013. PARTICIPANTS: Elderly, long-stay NH residents with positive MDRO infection assessments. MEASUREMENTS: Data were obtained from the Minimum Data Set (MDS) 3...
February 17, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28208428/thermodynamics-and-superradiant-phase-transitions-in-a-three-level-dicke-model
#7
Mathias Hayn, Tobias Brandes
We analyze the thermodynamic properties of a generalized Dicke model, i.e., a collection of three-level systems interacting with two bosonic modes. We show that at finite temperatures the system undergoes first-order phase transitions only, which is in contrast to the zero-temperature case where a second-order phase transition exists as well. We discuss the free energy and prominent expectation values. The limit of vanishing temperature is discussed as well.
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28204896/detection-of-a-novel-gammaherpesvirus-genus-rhadinovirus-in-wild-muntjac-deer-in-northern-ireland
#8
John McKillen, Kayleigh Hogg, Paula Lagan, Cheryl Ball, Simon Doherty, Neil Reid, Lisa Collins, Jaimie T A Dick
This study represents the initial part of an investigation into the potential for non-native, wild, free-living muntjac deer (Muntiacus reevesi) to carry viruses that could be a threat to livestock. A degenerate PCR assay was used to screen a range of tissues from muntjac deer culled in Northern Ireland for the presence of herpesviral nucleic acids. This was followed by sequencing of PCR amplicons and phylogenetic analysis. We report the detection of a novel gammaherpesvirus most closely related to a type 2 ruminant rhadinovirus from mule deer...
February 15, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28203783/effect-of-intermittency-on-treatment-outcomes-in-pulmonary-tuberculosis-an-updated-systematic-review-and-meta-analysis
#9
James C Johnston, Jonathon R Campbell, Dick Menzies
No abstract text is available yet for this article.
February 14, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28202584/comparison-of-human-gastrocnemius-forces-predicted-by-hill-type-muscle-models-and-estimated-from-ultrasound-images
#10
Taylor J M Dick, Andrew A Biewener, James M Wakeling
Hill-type models are ubiquitous in the field of biomechanics, providing estimates of a muscle's force as a function of its activation state and its assumed force-length and force-velocity properties. However, despite their routine use, the accuracy with which Hill-type models predict the forces generated by muscles during submaximal, dynamic tasks remains largely unknown. This study compared human gastrocnemii forces predicted by Hill-type models to the forces estimated from ultrasound-based measures of tendon length changes and stiffness during cycling, over a range of loads and cadences...
February 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28195346/herbivore-induced-plant-volatiles-and-tritrophic-interactions-across-spatial-scales
#11
Yavanna Aartsma, Felix J J A Bianchi, Wopke van der Werf, Erik H Poelman, Marcel Dicke
Herbivore-induced plant volatiles (HIPVs) are an important cue used in herbivore location by carnivorous arthropods such as parasitoids. The effects of plant volatiles on parasitoids have been well characterised at small spatial scales, but little research has been done on their effects at larger spatial scales. The spatial matrix of volatiles ('volatile mosaic') within which parasitoids locate their hosts is dynamic and heterogeneous. It is shaped by the spatial pattern of HIPV-emitting plants, the concentration, chemical composition and breakdown of the emitted HIPV blends, and by environmental factors such as wind, turbulence and vegetation that affect transport and mixing of odour plumes...
February 14, 2017: New Phytologist
https://www.readbyqxmd.com/read/28194948/cathodically-dissolved-platinum-resulting-from-the-o2-and-h2o2-reduction-reactions-on-platinum-ultramicroelectrodes
#12
Stephen J Percival, Jeffrey E Dick, Allen J Bard
The cathodic dissolution of platinum, resulting from the Oxygen Reduction Reaction (ORR) or hydrogen peroxide reduction on platinum, has been investigated. Highly oxidizing hydroxyl radicals (OH•) are believed to be the species responsible for the platinum dissolution phenomenon. These radicals are produced from the ORR by-product, hydrogen peroxide, through a 1 electron reduction pathway (H2O2 +e- → OH• + OH-). Platinum Ultramicroelectrodes (UMEs) were polarized sufficiently negative to drive the ORR or H2O2 reduction on the platinum surface, mainly using square wave potential pulses but constant applied potential and Cyclic Voltammetry (CV) were also investigated...
February 8, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28193668/towards-selective-mycobacterial-clpp1p2-inhibitors-with-reduced-activity-against-the-human-proteasome
#13
Wilfried Moreira, Sridhar Santhanakrishnan, Grace J Y Ngan, Choon Bing Low, Kanda Sangthongpitag, Anders Poulsen, Brian W Dymock, Thomas Dick
Mycobacterium tuberculosis (TB) is responsible for the greatest number of deaths worldwide due to a bacterial agent. We recently identified bortezomib (1) as a promising anti-TB compound. We showed that 1 inhibits the mycobacterial caseinolytic protease ClpP1P2 and exhibits bactericidal activity and established 1 and ClpP1P2 as an attractive lead/target couple. However, 1 is a human proteasome inhibitor currently approved for cancer therapy, and as such exhibits significant toxicity. Selective inhibition of the bacterial protease over the human proteasome is desirable in order to maintain antibacterial activity while reducing toxicity...
February 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28192584/laser-assisted-capsulotomy-centration-a-prospective-trial-comparing-pupil-versus-oct-based-scanned-capsule-centration
#14
Tim Schultz, Nikolaos Tsiampalis, H Burkhard Dick
PURPOSE: To investigate different capsulotomy centration methods for femtosecond laser-assisted cataract surgery. The overlap between intraocular lens (IOL) optic and lens capsule was measured with different centration methods and IOL types. METHODS: This was a prospective randomized clinical trial. Patients with cataract scheduled for femtosecond laser-assisted cataract surgery were assigned to one of four treatment groups: optical coherence tomography (OCT)-based scanned capsule centration (SCC) and three-piece IOL (SCC with three-piece IOL); scanned capsule centration and plate-haptic IOL (SCC with plate-haptic IOL); pupil centration (PC) and three-piece IOL (PC with three-piece IOL); or PC and plate-haptic IOL (PC with plate-haptic IOL)...
February 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28190448/foreword
#15
EDITORIAL
Michael J Aminoff, François Boller, Dick F Swaab
No abstract text is available yet for this article.
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28190380/passive-prosthetic-hands-and-tools-a-literature-review
#16
Bartjan Maat, Gerwin Smit, Dick Plettenburg, Paul Breedveld
BACKGROUND: The group of passive prostheses consists of prosthetic hands and prosthetic tools. These can either be static or adjustable. Limited research and development on passive prostheses has been performed although many people use these prosthesis types. Although some publications describe passive prostheses, no recent review of the peer-reviewed literature on passive prostheses is available. OBJECTIVE: Review the peer-reviewed literature on passive prostheses for replacement of the hand...
February 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28188490/a-review-of-laser-assisted-versus-traditional-phacoemulsification-cataract-surgery
#17
REVIEW
H Burkhard Dick, Tim Schultz
The use of femtosecond laser surgery improves the precision and reproducibility of corneal incisions and the capsular opening; it also reduces the amount of ultrasound energy required for lens nucleus work-up. The rate of complications reported so far appears to be low. There are a number of contraindications such as a history of cornea and/or glaucoma surgery and certain anatomical features like deep-set eyes, kyphosis, tremor, and obesity. Visual recovery and refractive results of both techniques are excellent...
February 10, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28187818/foreword
#18
EDITORIAL
Michael J Aminoff, François Boller, Dick F Swaab
No abstract text is available yet for this article.
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28187472/-epi-bowman-keratectomy-clinical-evaluation-of-a-new-method-of-surface-ablation
#19
S Taneri, S Kießler, A Rost, T Schultz, M Elling, B Dick
Purpose A new device for epithelial abrasion before excimer laser surface ablation or corneal cross-linking (CXL) has recently been introduced (Epi-Clear™, Orca Surgical, Kiryat-Shmona, Israel). We have reviewed the literature on the clinical results, potential benefits and drawbacks of this instrument, compared to other methods of epithelial removal. Method Literature search for "Epi-Bowman Keratectomy", "Epi-clear", and "Epikeratome" yielded 1 peer-review publication, 1 non-peer-review publication, 18 posters and presentations at international conferences (European Society of Cataract and Refractive Surgeons [ESCRS] and American Society of Cataract and Refractive Surgery [ASCRS]) on the use of the Epi-Clear™ device before surface ablation, 2 posters on the use of Epi-Clear before corneal crosslinking and 1 presentation on the experimental use of Epi-Clear for removal of a pterygium...
February 10, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28187429/smyd2-lysine-methyltransferase-regulates-leukemia-cell-growth-and-regeneration-after-genotoxic-stress
#20
Adi Zipin-Roitman, Nasma Aqaqe, Muhammad Yassin, Shahar Biechonski, Mariam Amar, Mark F van Delft, Olga I Gan, Sean P McDermott, Alla Buzina, Troy Ketela, Liran Shlush, Stephanie Xie, Veronique Voisin, Jason Moffat, Mark D Minden, John E Dick, Michael Milyavsky
The molecular determinants governing escape of Acute Myeloid Leukemia (AML) cells from DNA damaging therapy remain poorly defined and account for therapy failures. To isolate genes responsible for leukemia cells regeneration following multiple challenges with irradiation we performed a genome-wide shRNA screen. Some of the isolated hits are known players in the DNA damage response (e.g. p53, CHK2), whereas other, e.g. SMYD2 lysine methyltransferase (KMT), remains uncharacterized in the AML context. Here we report that SMYD2 knockdown confers relative resistance to human AML cells against multiple classes of DNA damaging agents...
February 6, 2017: Oncotarget
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