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https://www.readbyqxmd.com/read/29242881/understanding-the-formation-of-the-metastable-ferroelectric-phase-in-hafnia-zirconia-solid-solution-thin-films
#1
Min Hyuk Park, Young Hwan Lee, Han Joon Kim, Yu Jin Kim, Taehwan Moon, Keum Do Kim, Seung Dam Hyun, Thomas Mikolajick, Uwe Schroeder, Cheol Seong Hwang
Hf1-xZrxO2 (x ∼ 0.5-0.7) has been the leading candidate of ferroelectric materials with a fluorite crystal structure showing highly promising compatibility with complementary metal oxide semiconductor devices. Despite the notable improvement in device performance and processing techniques, the origin of its ferroelectric crystalline phase (space group: Pca21) formation has not been clearly elucidated. Several recent experimental and theoretical studies evidently showed that the interface and grain boundary energies of the higher symmetry phases (orthorhombic and tetragonal) contribute to the stabilization of the metastable non-centrosymmetric orthorhombic phase or tetragonal phase...
December 15, 2017: Nanoscale
https://www.readbyqxmd.com/read/29238285/generation-of-an-infectious-clone-of-a-new-korean-isolate-of-apple-chlorotic-leaf-spot-virus-driven-by-dual-35s-and-t7-promoters-in-a-versatile-binary-vector
#2
Ik-Hyun Kim, Jae-Yeong Han, In-Sook Cho, HyeKyoung Ju, Jae Sun Moon, Eun-Young Seo, Hong Gi Kim, John Hammond, Hyoun-Sub Lim
The full-length sequence of a new isolate of Apple chlorotic leaf spot virus (ACLSV) from Korea was divergent, but most closely related to the Japanese isolate A4, at 84% nucleotide identity. The full-length cDNA of the Korean isolate of ACLSV was cloned into a binary vector downstream of the bacteriophage T7 RNA promoter and the Cauliflower mosaic virus 35S promoter. Chenopodium quinoa was successfully infected using in vitro transcripts synthesized using the T7 promoter, detected at 20 days post inoculation (dpi), but did not produce obvious symptoms...
December 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/29232006/reconstruction-of-a-large-full-thickness-abdominal-wall-defect-with-flow-through-based-alt-flaps-a-case-report
#3
Dong Yeon Kim, Junho Lee, Jeong Tae Kim, Hye Kyung Chang, Suk-Ho Moon
An extensive 35 × 20 cm sized full-thickness abdominal wall defect was created after resection of aggressive abdominal fibromatosis in a 19-year-old male patient. Immediate reconstruction was not possible due to prolonged operation time and resulting severe bowel edema. A silicone sheet with NPWT was applied over the exposed viscera. After 1 week, silicone sheet was substituted with a composite mesh. Then, abdominal wall reconstruction with bilateral free anterolateral thigh (ALT) flaps (30 × 12 cm and 25 × 12 cm sized) was performed...
December 12, 2017: Microsurgery
https://www.readbyqxmd.com/read/29229755/the-full-moon-and-motorcycle-related-mortality-population-based-double-control-study
#4
Donald A Redelmeier, Eldar Shafir
OBJECTIVE: To test whether a full moon contributes to motorcycle related deaths. DESIGN: Population based, individual level, double control, cross sectional analysis. SETTING: Nighttime (4 pm to 8 am), United States. PARTICIPANTS: 13 029 motorcycle fatalities throughout the United States, 1975 to 2014 (40 years). MAIN OUTCOME MEASURE: Motorcycle fatalities during a full moon. RESULTS: 13 029 motorcyclists were in fatal crashes during 1482 relevant nights...
December 11, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29192075/complete-genome-sequence-of-a-papaya-ringspot-virus-isolate-from-south-korea-that-infects-cucurbita-pepo
#5
Dasom Baek, Davaajargal Igori, Seungmo Lim, Un Sun Hwang, Eung Kyoo Choi, Jae Sun Moon
The complete genome sequence of a Papaya ringspot virus (PRSV) isolate from South Korea (SK) infecting squash (Cucurbita pepo) was obtained using paired-end RNA sequencing. A BLASTn search of the PRSV SK isolate full-genome sequence showed nucleotide sequence identity ranging from 81% to 83% with previously reported PRSV isolates (GenBank accession numbers KX655874 and EF017707).
November 30, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29162753/assessment-of-pain-in-the-elderly-a-literature-review
#6
REVIEW
Yoon-Sook Kim, Jae-Min Park, Yeon-Sil Moon, Seol-Heui Han
BACKGROUND: Pain perception is highly subjective, and effective pain management can be challenging in the elderly. We aimed to identify a set of practical measures that could be used to assess pain in elderly patients with or without cognitive impairment, as the first step towards effectively managing their pain. METHODS: We used the PRISMA guidelines for this literature review. Two reviewers independently assessed titles, abstracts and full-text articles, and a third reviewer resolved any disagreements...
July 2017: National Medical Journal of India
https://www.readbyqxmd.com/read/29162123/prospective-comparison-of-novel-dark-blood-late-gadolinium-enhancement-with-conventional-bright-blood-imaging-for-the-detection-of-scar
#7
Rohin Francis, Peter Kellman, Tushar Kotecha, Andrea Baggiano, Karl Norrington, Ana Martinez-Naharro, Sabrina Nordin, Daniel S Knight, Roby D Rakhit, Tim Lockie, Philip N Hawkins, James C Moon, Derek J Hausenloy, Hui Xue, Michael S Hansen, Marianna Fontana
BACKGROUND: Conventional bright blood late gadolinium enhancement (bright blood LGE) imaging is a routine cardiovascular magnetic resonance (CMR) technique offering excellent contrast between areas of LGE and normal myocardium. However, contrast between LGE and blood is frequently poor. Dark blood LGE (DB LGE) employs an inversion recovery T2 preparation to suppress the blood pool, thereby increasing the contrast between the endocardium and blood. The objective of this study is to compare the diagnostic utility of a novel DB phase sensitive inversion recovery (PSIR) LGE CMR sequence to standard bright blood PSIR LGE...
November 21, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29140303/two-cycloartenol-synthases-for-phytosterol-biosynthesis-in-polygala-tenuifolia-willd
#8
Mei Lan Jin, Woo Moon Lee, Ok Tae Kim
Oxidosqualene cyclases (OSCs) are enzymes that play a key role in control of the biosynthesis of phytosterols and triterpene saponins. In order to uncover OSC genes from Polygala tenuifolia seedlings induced by methyl jasmonate (MeJA), RNA-sequencing analysis was performed using the Illumina sequencing platform. A total of 148,488,632 high-quality reads from two samples (control and the MeJA treated) were generated. We screened genes related to phytosterol and triterpene saponin biosynthesis and analyzed the transcriptional changes of differentially expressed unigene (DEUG) values calculated by fragments per kilobase million (FPKM)...
November 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29134136/creating-a-full-thickness-choroidal-incision-an-ex-vivo-analysis-of-human-and-porcine-tissue-contraction-dynamics
#9
Stephen A LoBue, Norihiro Yamada, Moon Jeong Choi, Timothy W Olsen
Purpose: We hypothesized that the elastic nature of the choroid leads to tissue contraction following a full-thickness, sharp incision. Furthermore, we sought to quantify, measure, and compare tissue contraction in ex vivo porcine globes and human globes of various ages using predetermined variables. Method: A full-thickness, ex vivo choroidal incision was performed in either pig (n = 97) or human (n = 30) specimens. Variables included trephine diameter (1.5, 2...
November 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29117235/variability-of-surface-and-underwater-nocturnal-spectral-irradiance-with-the-presence-of-clouds-in-urban-and-peri-urban-wetlands
#10
Jean Secondi, Valentin Dupont, Aurélie Davranche, Nathalie Mondy, Thierry Lengagne, Marc Théry
Artificial light at night (ALAN) is an increasing phenomenon worldwide. It causes a wealth of biological and ecological effects that may eventually affect populations and ecosystems. Despite the growing concern about ALAN, little is known about the light levels species are exposed to at night, especially for wetlands and underwater habitats. We determined nocturnal irradiance in urban and peri-urban wetlands above and under water, and assessed the effect of cloud cover on the variability of ALAN across the urban gradient...
2017: PloS One
https://www.readbyqxmd.com/read/29068560/extremely-vivid-highly-transparent-and-ultrathin-quantum-dot-light-emitting-diodes
#11
Moon Kee Choi, Jiwoong Yang, Dong Chan Kim, Zhaohe Dai, Junhee Kim, Hyojin Seung, Vinayak S Kale, Sae Jin Sung, Chong Rae Park, Nanshu Lu, Taeghwan Hyeon, Dae-Hyeong Kim
Displaying information on transparent screens offers new opportunities in next-generation electronics, such as augmented reality devices, smart surgical glasses, and smart windows. Outstanding luminance and transparency are essential for such "see-through" displays to show vivid images over clear background view. Here transparent quantum dot light-emitting diodes (Tr-QLEDs) are reported with high brightness (bottom: ≈43 000 cd m(-2) , top: ≈30 000 cd m(-2) , total: ≈73 000 cd m(-2) at 9 V), excellent transmittance (90% at 550 nm, 84% over visible range), and an ultrathin form factor (≈2...
October 25, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29047598/optimal-parameter-retrieval-for-metamaterial-absorbers-using-the-least-square-method-for-wide-incidence-angle-insensitivity
#12
Dongju Lee, Nguyen Toan Trung, Un-Chul Moon, Sungjoon Lim
In this paper, we propose a specific algorithm based on the least-square method to predict the incidence angle insensitivity of a metamaterial absorber. The proposed algorithm was analyzed on a metamaterial absorber design with circular sectors on the top layer and a full copper cover on the bottom layer. We retrieved the parameters of inductance, capacitance, and conductance from the equivalent circuit of the metamaterial absorber at different incidence angles of 0°, 30°, 65°, and 70° under both transverse electric and transverse magnetic polarization...
June 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/29047582/composite-infrared-spectrometer-cirs-on-cassini
#13
D E Jennings, F M Flasar, V G Kunde, C A Nixon, M E Segura, P N Romani, N Gorius, S Albright, J C Brasunas, R C Carlson, A A Mamoutkine, E Guandique, M S Kaelberer, S Aslam, R K Achterberg, G L Bjoraker, C M Anderson, V Cottini, J C Pearl, M D Smith, B E Hesman, R D Barney, S Calcutt, T J Vellacott, L J Spilker, S G Edgington, S M Brooks, P Ade, P J Schinder, A Coustenis, R Courtin, G Michel, R Fettig, S Pilorz, C Ferrari
The Cassini spacecraft orbiting Saturn carries the composite infrared spectrometer (CIRS) designed to study thermal emission from Saturn and its rings and moons. CIRS, a Fourier transform spectrometer, is an indispensable part of the payload providing unique measurements and important synergies with the other instruments. It takes full advantage of Cassini's 13-year-long mission and surpasses the capabilities of previous spectrometers on Voyager 1 and 2. The instrument, consisting of two interferometers sharing a telescope and a scan mechanism, covers over a factor of 100 in wavelength in the mid and far infrared...
June 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/29037041/triazenyl-radicals-stabilized-by-n-heterocyclic-carbenes
#14
Jisu Back, Junbeom Park, Youngsuk Kim, Haneol Kang, Yonghwi Kim, Moon Jeong Park, Kimoon Kim, Eunsung Lee
Notwithstanding the notable progress in the synthesis of N-heterocyclic carbene-stabilized radicals, aminyl radicals, supported by NHCs or otherwise, have been scarcely studied due to synthetic challenges. Triazenyl radical is a particular form of aminyl radical that contains three adjacent nitrogen atoms, and offers intriguing possibilities for unique reactivity and physical properties stemming from expected delocalization of the spin density over the NNN moiety and its conjugated substituents. Here, we report the synthesis and full characterization of the first NHC-stabilized triazenyl radicals, obtained by one-electron reduction of the corresponding triazenyl cations with potassium metal...
October 19, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29032595/born-at-the-right-time-a-conceptual-framework-linking-reproduction-development-and-settlement-in-reef-fish
#15
J S Shima, E G Noonburg, S E Swearer, S H Alonzo, C W Osenberg
Parents are expected to make decisions about reproductive timing and investment that maximize their own fitness, even if this does not maximize the fitness of each individual offspring. When offspring survival is uncertain, selection typically favors iteroparity, which means that offspring born at some times can be disadvantaged, while others get lucky. The eventual fate of offspring may be further modified by their own decisions. Are fates of offspring set by birthdates (i.e., determined by parents), or can offspring improve upon the cards they've been dealt? If so, do we see adaptive plasticity in the developmental timing of offspring? We evaluate these questions for a coral reef fish (the sixbar wrasse, Thalassoma hardwicke) that is characterized by extreme iteroparity and flexible larval development...
October 14, 2017: Ecology
https://www.readbyqxmd.com/read/28994212/high-frequency-of-brain-metastases-after-adjuvant-therapy-for-high-risk-melanoma
#16
Wolfram E Samlowski, James Moon, Merle Witter, Michael B Atkins, John M Kirkwood, Megan Othus, Antoni Ribas, Vernon K Sondak, Lawrence E Flaherty
The incidence of CNS progression in patients with high-risk regional melanoma (stages IIIAN2a-IIIC) is not well characterized. Data from the S0008 trial provided an opportunity to examine the role of CNS progression in treatment failure and survival. All patients were surgically staged. Following wide excision and full regional lymphadenectomy, patients were randomized to receive adjuvant biochemotherapy (BCT) or high-dose interferon alfa-2B (HDI). CNS progression was retrospectively identified from data forms...
November 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28971048/verification-of-reliability-and-validity-of-the-feeding-and-swallowing-scale-for-premature-infants-fsspi
#17
Chang Won Moon, Han Geul Jung, Hee Jung Cheon, Su Mi Oh, Young Ok Ki, Jeong-Yi Kwon
OBJECTIVE: To propose a new scale, the Feeding and Swallowing Scale for Premature Infants (FSSPI), based on videofluoroscopic swallowing study (VFSS) findings and to verify the reliability and validity of the FSSPI. METHODS: One hundred thirty preterm infants who had undergone VFSS were enrolled in this retrospective study. The FSSPI was developed by referring to the Baby Regulated Organization of Subsystems and Sucking approach. The FSSPI score for each VFSS video was evaluated by a physiatrist as well as by three experienced speech-language pathologists...
August 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28970854/the-effect-of-reproductive-factors-on-breast-cancer-presentation-in-women-who-are-brca-mutation-carrier
#18
Ju-Yeon Kim, Hyeong-Gon Moon, Young-Joon Kang, Wonshik Han, Woo-Chul Noh, Yongsik Jung, Byung-In Moon, Eunyoung Kang, Sung-Shin Park, Min Hyuk Lee, Bo Young Park, Jong Won Lee, Dong-Young Noh
PURPOSE: Germline mutations in the BRCA1 and BRCA2 genes confer increased risks for breast cancers. However, the clinical presentation of breast cancer among women who are carriers of the BRCA1 or BRCA2 (BRCA1/2 carriers) mutations is heterogenous. We aimed to identify the effects of the reproductive histories of women with the BRCA1/2 mutations on the clinical presentation of breast cancer. METHODS: We retrospectively analyzed clinical data on women with proven BRCA1 and BRCA2 mutations who were recruited to the Korean Hereditary Breast Cancer study, from 2007 to 2014...
September 2017: Journal of Breast Cancer
https://www.readbyqxmd.com/read/28917662/successful-optic-nerve-regeneration-in-the-senescent-zebrafish-despite-age-related-decline-of-cell-intrinsic-and-extrinsic-response-processes
#19
Jessie Van Houcke, Ilse Bollaerts, Emiel Geeraerts, Benjamin Davis, An Beckers, Inge Van Hove, Kim Lemmens, Lies De Groef, Lieve Moons
Dysfunction of the central nervous system (CNS) in neurodegenerative diseases or after brain lesions seriously affects life quality of a growing number of elderly, since the adult CNS lacks the capacity to replace or repair damaged neurons. Despite intensive research efforts, full functional recovery after CNS disease and/or injury remains challenging, especially in an aging environment. As such, there is a rising need for an aging model in which the impact of aging on successful regeneration can be studied...
December 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28890459/james-e-webb-technocracy-and-the-new-deal-roots-of-space-age-management
#20
Allan A Needell
abstract James E. Webb, NASA's Administrator during the hectic years preparing to send American astronauts to the Moon, has come to represent the pinnacle of postwar American optimism and support for large-scale, technically complex national undertakings. Success in 1969 lent credence to Webb's faith in "space age management." By the 1980s such "technocratic optimism" had precipitously declined. Since 1985, with the publication of Walter A. McDougall's Pulitzer Prize winning. . . The Heavens and the Earth, the rise and decline of such optimism has often been framed in the context of Cold War ideology and competition...
2017: Technology and Culture
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