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https://www.readbyqxmd.com/read/28806090/phonon-speed-not-scattering-differentiates-thermal-transport-in-lead-halide-perovskites
#1
Giselle A Elbaz, Wee-Liat Ong, Evan Ambrose Doud, Philip Kim, Daniel W Paley, Xavier Roy, Jonathan A Malen
Thermal management plays a critical role in the design of solid state materials for energy conversion. Lead halide perovskites have emerged as promising candidates for photovoltaic, thermoelectric and optoelectronic applications but their thermal properties are still poorly understood. Here we report on the thermal conductivity, elastic modulus, and sound speed of a series of lead halide perovskites MAPbX3 (X = Cl, Br, I), CsPbBr3, and FAPbBr3 (MA = methylammonium, FA = formamidinium). Using frequency domain thermoreflectance, we find that the thermal conductivities of single crystal lead halide perovskites range from 0...
August 14, 2017: Nano Letters
https://www.readbyqxmd.com/read/28805817/room-temperature-current-blockade-in-atomically-defined-single-cluster-junctions
#2
Giacomo Lovat, Bonnie Choi, Daniel W Paley, Michael L Steigerwald, Latha Venkataraman, Xavier Roy
Fabricating nanoscopic devices capable of manipulating and processing single units of charge is an essential step towards creating functional devices where quantum effects dominate transport characteristics. The archetypal single-electron transistor comprises a small conducting or semiconducting island separated from two metallic reservoirs by insulating barriers. By enabling the transfer of a well-defined number of charge carriers between the island and the reservoirs, such a device may enable discrete single-electron operations...
August 14, 2017: Nature Nanotechnology
https://www.readbyqxmd.com/read/28799752/tuning-singlet-fission-in-pi-bridge-pi-chromophores
#3
Elango Kumarasamy, Samuel N Sanders, Murad J Y Tayebjee, Amir Asadpoordarvish, Timothy J H Hele, Eric G Fuemmeler, Andrew B Pun, Lauren M Yablon, Jonathan Z Low, Daniel W Paley, Jacob C Dean, Bonnie Choi, Gregory D Scholes, Michael L Steigerwald, Nandini Ananth, Dane R McCamey, Matthew Y Sfeir, Luis M Campos
We have designed a series of pentacene dimers separated by homoconjugated or non-conjugated bridges that exhibit fast and efficient intramolecular singlet exciton fission (iSF). These materials are distinctive among reported iSF compounds because they exist in the unexplored regime of close spatial proximity but weak electronic coupling between the singlet exciton and triplet pair states. Using transient absorption spectroscopy to investigate photophysics in these molecules, we find that homoconjugated dimers display desirable excited state dynamics, with significantly reduced recombination rates as compared to conjugated dimers with similar singlet fission rates...
August 11, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28799199/refining-moral-agency-insights-from-moral-psychology-and-moral-philosophy
#4
Aimee Milliken
Research in moral psychology has recently raised questions about the impact of context and the environment on the way the human mind works. In a 2012 call to action, Paley wrote: "If some of the conclusions arrived at by moral psychologists are true, they are directly relevant to the way nurses think about moral problems, and present serious challenges to favoured concepts in nursing ethics, such as the ethics of care, virtue, and the unity of the person" (p. 80). He urges nurse ethicists and scholars to evaluate the impact these findings may have for moral theory...
August 11, 2017: Nursing Philosophy: An International Journal for Healthcare Professionals
https://www.readbyqxmd.com/read/28777885/dimerization-of-endohedral-fullerene-in-a-superatomic-crystal
#5
Anastasia Voevodin, Laura Abella, Edison Castro, Daniel W Paley, Luis M Campos, Antonio Rodriguez-Fortea, Josep M Poblet, Luis Echegoyen, Xavier Roy
We describe a solid state material created from the reaction of Ni₉Te₆(PEt₃)₈ and Lu₃N@C₈₀. The resulting superatomic crystal, [Ni₁₂Te₁₂(PEt₃)₈]₂[(Lu₃N@C₈₀)₂], contains dimers of Lu₃N@C₈₀ that form upon reduction of the fullerene through a single C-C bond at the triple hexagon junctions. The encapsulated Lu₃N cluster displays an unprecedented orientation that is collinear and coplanar with the intercage carbon bond. Density functional theory calculations rationalize this unique bonding and relative orientation of the Lu₃N clusters...
August 4, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28738986/pilot-testing-fall-tips-tailoring-interventions-for-patient-safety-a-patient-centered-fall-prevention-toolkit
#6
Patricia C Dykes, Megan Duckworth, Stephanie Cunningham, Sasha Dubois, Melissa Driscoll, Zinnia Feliciano, Michael Ferrazzi, Farah E Fevrin, Stephanie Lyons, Mary Ellen Lindros, Allison Monahan, Matthew M Paley, Saby Jean-Pierre, Maureen Scanlan
BACKGROUND: Patient falls during an acute hospitalization cause injury, reduced mobility, and increased costs. The laminated paper Fall TIPS Toolkit (Fall TIPS) provides clinical decision support at the bedside by linking each patient's fall risk assessment with evidence-based interventions. Strategies were needed to integrate this evidence into clinical practice. METHODS: The Institute for Healthcare Improvement's Framework for Spread is the conceptual model for pilot implementation of Fall TIPS at Brigham and Women's Hospital (BWH; Boston) and Montefiore Medical Center (MMC; Bronx, New York)...
August 2017: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28734494/bone-transport-versus-acute-shortening-for-the-management-of-infected-tibial-non-unions-with-bone-defects
#7
Kevin Tetsworth, Cengiz Sen, John E Herzenberg, Matthew Jaffe, Dean C Maar, Vaida Glatt, Dror Paley, Erik Hohmann
INTRODUCTION: This study compared bone transport to acute shortening/lengthening in a series of infected tibial segmental defects for infected tibial non-union. METHODS: In a retrospective comparative study 42 patients treated for infected tibial non-union with segmental bone loss measuring between 3 and 10cm were included. Group A was treated with bone transport and Group B with acute shortening/lengthening. All patients were treated by Ilizarov methods for gradual correction as bi-focal or tri-focal treatment; the treating surgeon selected either transport or acute shortening based on clinical considerations...
July 12, 2017: Injury
https://www.readbyqxmd.com/read/28712143/reliability-of-the-echomri-infants-system-for-water-and-fat-measurements-in-newborns
#8
Tatiana Toro-Ramos, Charles Paley, William W Wong, F Xavier Pi-Sunyer, Wen W Yu, John Thornton, Dympna Gallagher
OBJECTIVE: The precision and accuracy of a quantitative magnetic resonance (EchoMRI Infants) system in newborns were determined. METHODS: Canola oil and drinking water phantoms (increments of 10 g to 1.9 kg) were scanned four times. Instrument reproducibility was assessed from three scans (within 10 minutes) in 42 healthy term newborns (12-70 hours post birth). Instrument precision was determined from the coefficient of variation (CV) of repeated scans for total water, lean mass, and fat measures for newborns and the mean difference between weight and measurement for phantoms...
July 16, 2017: Obesity
https://www.readbyqxmd.com/read/28693513/multiplier-method-may-be-unreliable-to-predict-the-timing-of-temporary-hemiepiphysiodesis-for-coronal-angular-deformity
#9
REVIEW
Zhenkai Wu, Jing Ding, Dahang Zhao, Li Zhao, Hai Li, Jianlin Liu
BACKGROUND AND PURPOSES: The multiplier method was introduced by Paley to calculate the timing for temporary hemiepiphysiodesis. However, this method has not been verified in terms of clinical outcome measure. We aimed to (1) predict the rate of angular correction per year (ACPY) at the various corresponding ages by means of multiplier method and verify the reliability based on the data from the published studies and (2) screen out risk factors for deviation of prediction. METHODS: A comprehensive search was performed in the following electronic databases: Cochrane, PubMed, and EMBASE™...
July 10, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28690469/ankle-reconstruction-in-fibular-hemimelia-new-approach
#10
Hany Hefny, ElHussein M Elmoatasem, Mahmoud Mahran, Tamer Fayyad, Mohamed A Elgebeily, Ahmed Mansour, Mamdouh Hefny
BACKGROUND: Fibular hemimelia is a congenital disorder that is characterized by the absence of the fibula that could be either partial or complete. Successful management aims to restore normal weight bearing and normal limb length. The introduction of the Ilizarov method of limb lengthening has provided an attractive alternative to amputation. During lengthening, the tight posterolateral soft-tissue structures, the thick fibrous fibular band, and the shortened Achilles tendon become tighter and transfer a valgus force to the talus and calcaneus, further aggravating the deformity...
July 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28659585/evidence-for-rapid-oxidative-phosphorylation-and-lactate-fermentation-in-motile-human-sperm-by-hyperpolarized-13-c-magnetic-resonance-spectroscopy
#11
Steven Reynolds, Nurul Fadhlina Bt Ismail, Sarah J Calvert, Allan A Pacey, Martyn N J Paley
Poor sperm motility is a common cause of male infertility for which there are no empirical therapies. Sperm motility is powered by adenosine triphosphate but the relative importance of lactate fermentation and Oxidative Phosphorylation (OxPhos) is debated. To study the relationship between energy metabolism and sperm motility we used dissolution Dynamic Nuclear Polarization (dDNP) for the first time to show the rapid conversion of (13)C1-pyruvate to lactate and bicarbonate, indicating active glycolytic and OxPhos metabolism in sperm...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645704/reconstruction-of-large-diaphyseal-bone-defect-by-simplified-bone-transport-over-nail-technique-a-7-case-series
#12
F Ferchaud, L Rony, F Ducellier, P Cronier, V Steiger, L Hubert
INTRODUCTION: Reconstruction of large diaphyseal bone defect is complex and the complications rate is high. This study aimed to assess a simplified technique of segmental bone transport by monorail external fixator over an intramedullary nail. MATERIAL AND METHOD: A prospective study included 7 patients:2 femoral and 5 tibial defects.Mean age was 31 years (range, 16-61 years). Mean follow-up was 62 months (range, 46-84 months). Defects were post-traumatic, with a mean length of 7...
June 20, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28644674/constraints-on-oscillation-parameters-from-%C3%AE-_-e-appearance-and-%C3%AE-_-%C3%AE-disappearance-in-nova
#13
P Adamson, L Aliaga, D Ambrose, N Anfimov, A Antoshkin, E Arrieta-Diaz, K Augsten, A Aurisano, C Backhouse, M Baird, B A Bambah, K Bays, B Behera, S Bending, R Bernstein, V Bhatnagar, B Bhuyan, J Bian, T Blackburn, A Bolshakova, C Bromberg, J Brown, G Brunetti, N Buchanan, A Butkevich, V Bychkov, M Campbell, E Catano-Mur, S Childress, B C Choudhary, B Chowdhury, T E Coan, J A B Coelho, M Colo, J Cooper, L Corwin, L Cremonesi, D Cronin-Hennessy, G S Davies, J P Davies, P F Derwent, R Dharmapalan, P Ding, Z Djurcic, E C Dukes, H Duyang, S Edayath, R Ehrlich, G J Feldman, M J Frank, M Gabrielyan, H R Gallagher, S Germani, T Ghosh, A Giri, R A Gomes, M C Goodman, V Grichine, R Group, D Grover, B Guo, A Habig, J Hartnell, R Hatcher, A Hatzikoutelis, K Heller, A Himmel, A Holin, J Hylen, F Jediny, M Judah, G K Kafka, D Kalra, S M S Kasahara, S Kasetti, R Keloth, L Kolupaeva, S Kotelnikov, I Kourbanis, A Kreymer, A Kumar, S Kurbanov, K Lang, W M Lee, S Lin, J Liu, M Lokajicek, J Lozier, S Luchuk, K Maan, S Magill, W A Mann, M L Marshak, K Matera, V Matveev, D P Méndez, M D Messier, H Meyer, T Miao, W H Miller, S R Mishra, R Mohanta, A Moren, L Mualem, M Muether, S Mufson, R Murphy, J Musser, J K Nelson, R Nichol, E Niner, A Norman, T Nosek, Y Oksuzian, A Olshevskiy, T Olson, J Paley, P Pandey, R B Patterson, G Pawloski, D Pershey, O Petrova, R Petti, S Phan-Budd, R K Plunkett, R Poling, B Potukuchi, C Principato, F Psihas, A Radovic, R A Rameika, B Rebel, B Reed, D Rocco, P Rojas, V Ryabov, K Sachdev, P Sail, O Samoylov, M C Sanchez, R Schroeter, J Sepulveda-Quiroz, P Shanahan, A Sheshukov, J Singh, J Singh, P Singh, V Singh, J Smolik, N Solomey, E Song, A Sousa, K Soustruznik, M Strait, L Suter, R L Talaga, M C Tamsett, P Tas, R B Thayyullathil, J Thomas, X Tian, S C Tognini, J Tripathi, A Tsaris, J Urheim, P Vahle, J Vasel, L Vinton, A Vold, T Vrba, B Wang, M Wetstein, D Whittington, S G Wojcicki, J Wolcott, N Yadav, S Yang, J Zalesak, B Zamorano, R Zwaska
Results are reported from an improved measurement of ν_{μ}→ν_{e} transitions by the NOvA experiment. Using an exposure equivalent to 6.05×10^{20} protons on target, 33 ν_{e} candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA ν_{μ} disappearance data and external constraints from reactor experiments on sin^{2}2θ_{13}, the hypothesis of inverted mass hierarchy with θ_{23} in the lower octant is disfavored at greater than 93% C.L. for all values of δ_{CP}.
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28601279/escitalopram-or-novel-herbal-treatments-differentially-alter-cytokine-and-behavioral-responses-to-immune-challenge
#14
Ronit Avitsur, Shalva Paley, Motty Franko, Nizan Wolff, Nir Eyal, Ravid Doron
Studies suggest that inflammation is involved in the pathophysiology of depression. The present study examined the effects of the commonly used antidepressant escitalopram, in comparison with a novel herbal treatment (NHT) consisted of Crataegus pinnatifida, Triticum aestivum, Lilium brownii and Fructus Ziziphus jujuba, on cytokine and behavioral responses to an immune challenge. Escitalopram augmented lipopolysaccharide-induced tumor necrosis factor (TNF)-α peripheral secretion and induced a faster kinetics of interleukin-1β secretion, while marginally reducing sickness behavior...
August 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28558233/cationic-copper-hydride-clusters-arising-from-oxidation-of-ph3p-6cu6h6
#15
Shuo Liu, Michael S Eberhart, Jack R Norton, Xiaodong Yin, Michelle C Neary, Daniel W Paley
Transfer of the first electron from (Ph3P)6Cu6H6 to Cp*2Fe(+) is fast (k > 10(6) L·mol(-1)·s(-1)). Transfer of a second electron to the same oxidant has a much lower thermodynamic driving force and is considerably slower, with k = 9.29(4) × 10(3) L·mol(-1)·s(-1). The second oxidation leads to the formation of [(Ph3P)6Cu6H5](+). The structure of [(Ph3P)6Cu6H5](+) has been confirmed by its conversion back to (Ph3P)6Cu6H6 and by microanalysis; X-ray diffraction shows that the complex is a bitetrahedron in the solid state...
June 6, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28557815/use-of-paley-classification-and-superankle-procedure-in-the-management-of-fibular-hemimelia
#16
Ruta M Kulkarni, Nitish Arora, Sagar Saxena, Sujay M Kulkarni, Yadwinder Saini, Rajiv Negandhi
BACKGROUND: Fibular hemimelia is the most common deficiency involving the long bones. Paley classification is based on the ankle joint morphology, identifies the basic pathology, and helps in planning the surgical management. Reconstruction surgery encompasses foot deformity correction and limb length equalization. The SUPERankle procedure is a combination of bone and soft tissue procedures that stabilizes the foot and addresses all deformities. METHODS: We retrospectively reviewed 29 consecutive patients (29 limb segments), surgically treated between December 2000 and December 2014...
May 26, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28521382/-coincidence-and-therapy-of-dysalignments-and-degenerative-knee-cartilage-lesions-results-from-the-german-cartilageregistry-dgou
#17
Gunter Spahn, Jürgen Fritz, Dirk Albrecht, Peter Angele, Stefan Fickert, Matthias Aurich, Gunther O Hofmann, Phillip Niemeyer
Purpose This multicenter study was aimed to evaluate the coincidence of degenerative knee cartilage lesions with a varus or valgus dysalignment. Furthermore, the frequency of the combined surgery of cartilage treatments and corrective osteotomies are determined. Material and Methods A total of 1778 patients were included in the German CartilageRegistry (deadline 01.08.2016). In 90.6% of patients, the surgeon calculated the alignment by clinical observation. Varus or valgus conditions were measured radiologically in only 56...
August 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28494062/conjunctival-lesion-in-a-patient-with-ocular-graft-vs-host-disease
#18
Grace L Paley, Asim V Farooq, Anthony J Lubniewski
No abstract text is available yet for this article.
August 1, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28464178/standardized-physician-administered-patient-centered-discharge-protocol-improves-patients-comprehension
#19
Jennifer W Caceres, Scott M Alter, Richard D Shih, Jimmy D Fernandez, Frederick K Williams, Richard Paley, William Benda, Lisa M Clayton
OBJECTIVES: Patients are 30% less likely to be readmitted or visit the emergency department if they have a clear understanding of their discharge instructions. A standardized approach to a hospital discharge plan has not been universally implemented, however. Our goal was to increase patients' comprehension of discharge instructions by implementing a standardized patient-centered discharge planning protocol that uses a physician team member to explain these plans. METHODS: This was a prospective study that included all of the patients discharged from an inpatient medical teaching service in a community-based hospital during the study period...
May 2017: Southern Medical Journal
https://www.readbyqxmd.com/read/28452513/measurement-of-the-neutrino-mixing-angle-%C3%AE-_-23-in-nova
#20
P Adamson, L Aliaga, D Ambrose, N Anfimov, A Antoshkin, E Arrieta-Diaz, K Augsten, A Aurisano, C Backhouse, M Baird, B A Bambah, K Bays, B Behera, S Bending, R Bernstein, V Bhatnagar, B Bhuyan, J Bian, T Blackburn, A Bolshakova, C Bromberg, J Brown, G Brunetti, N Buchanan, A Butkevich, V Bychkov, M Campbell, E Catano-Mur, S Childress, B C Choudhary, B Chowdhury, T E Coan, J A B Coelho, M Colo, J Cooper, L Corwin, L Cremonesi, D Cronin-Hennessy, G S Davies, J P Davies, P F Derwent, S Desai, R Dharmapalan, P Ding, Z Djurcic, E C Dukes, H Duyang, S Edayath, R Ehrlich, G J Feldman, M J Frank, M Gabrielyan, H R Gallagher, S Germani, T Ghosh, A Giri, R A Gomes, M C Goodman, V Grichine, R Group, D Grover, B Guo, A Habig, J Hartnell, R Hatcher, A Hatzikoutelis, K Heller, A Himmel, A Holin, J Hylen, F Jediny, M Judah, G K Kafka, D Kalra, S M S Kasahara, S Kasetti, R Keloth, L Kolupaeva, S Kotelnikov, I Kourbanis, A Kreymer, A Kumar, S Kurbanov, K Lang, W M Lee, S Lin, J Liu, M Lokajicek, J Lozier, S Luchuk, K Maan, S Magill, W A Mann, M L Marshak, K Matera, V Matveev, D P Méndez, M D Messier, H Meyer, T Miao, W H Miller, S R Mishra, R Mohanta, A Moren, L Mualem, M Muether, S Mufson, R Murphy, J Musser, J K Nelson, R Nichol, E Niner, A Norman, T Nosek, Y Oksuzian, A Olshevskiy, T Olson, J Paley, P Pandey, R B Patterson, G Pawloski, D Pershey, O Petrova, R Petti, S Phan-Budd, R K Plunkett, R Poling, B Potukuchi, C Principato, F Psihas, A Radovic, R A Rameika, B Rebel, B Reed, D Rocco, P Rojas, V Ryabov, K Sachdev, P Sail, O Samoylov, M C Sanchez, R Schroeter, J Sepulveda-Quiroz, P Shanahan, A Sheshukov, J Singh, J Singh, P Singh, V Singh, J Smolik, N Solomey, E Song, A Sousa, K Soustruznik, M Strait, L Suter, R L Talaga, M C Tamsett, P Tas, R B Thayyullathil, J Thomas, X Tian, S C Tognini, J Tripathi, A Tsaris, J Urheim, P Vahle, J Vasel, L Vinton, A Vold, T Vrba, B Wang, M Wetstein, D Whittington, S G Wojcicki, J Wolcott, N Yadav, S Yang, J Zalesak, B Zamorano, R Zwaska
This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of 6.05×10^{20} protons on target from the NuMI beam at the Fermi National Accelerator Laboratory. The measurement probes the muon-tau symmetry hypothesis that requires maximal θ_{23} mixing (θ_{23}=π/4). Assuming the normal mass hierarchy, we find Δm_{32}^{2}=(2.67±0.11)×10^{-3}  eV^{2} and sin^{2}θ_{23} at the two statistically degenerate values 0.404_{-0.022}^{+0.030} and 0...
April 14, 2017: Physical Review Letters
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