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https://www.readbyqxmd.com/read/28330186/a-comprehensive-study-of-one-step-selenization-process-for-cu-in1-x-ga-x-se2-thin-film-solar-cells
#1
Shih-Chen Chen, Sheng-Wen Wang, Shou-Yi Kuo, Jenh-Yih Juang, Po-Tsung Lee, Chih Wei Luo, Kaung-Hsiung Wu, Hao-Chung Kuo
In this work, aiming at developing a rapid and environmental-friendly process for fabricating CuIn1-x Ga x Se2 (CIGS) solar cells, we demonstrated the one-step selenization process by using selenium vapor as the atmospheric gas instead of the commonly used H2Se gas. The photoluminescence (PL) characteristics indicate that there exists an optimal location with superior crystalline quality in the CIGS thin films obtained by one-step selenization. The energy dispersive spectroscopy (EDS) reveals that the Ga lateral distribution in the one-step selenized CIGS thin film is intimately correlated to the blue-shifted PL spectra...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28327743/spatially-composition-modulated-two-dimensional-ws2xse2-1-x-nanosheets
#2
Xueping Wu, Honglai Li, Hongjun Liu, Xiujuan Zhuang, Xiao Wang, Xiaopeng Fan, Xidong Duan, Xiaoli Zhu, Qinglin Zhang, Alfred J Meixner, Xiangfeng Duan, Anlian Pan
Controllable synthesis of two-dimensional (2D) transition-metal dichalcogenides (TMDs) with tunable bandgaps is vital for their applications in nanophotonics, due to its efficient modulation of the physical and chemical properties of these atomic layered nanostructures. Here we report for the first time, the controllable synthesis of spatially composition-modulated WS2xSe2(1-x) nanosheets and WS2-WS2xSe2(1-x) lateral heterostructures by a developed one-step chemical vapor deposition (CVD) approach, as well as the understanding of their growth mechanism...
March 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28326228/innovations-from-the-ivory-tower-wilhelm-barthlott-and-the-paradigm-shift-in-surface-science
#3
Christoph Neinhuis
This article is mainly about borders that have tremendous influence on our daily life, although many of them exist and act mostly unrecognized. In this article the first objective will be to address more generally the relation between university and society or industry, borders within universities, borders in thinking and the huge amount of misunderstandings and losses resulting from these obvious or hidden borders. In the second part and in more detail, the article will highlight the impact of the research conducted by Wilhelm Barthlott throughout his scientific career during which not only one border was removed, shifted or became more penetrable...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28324753/error-augmentation-feedback-for-lateral-weight-shifting
#4
Kevin O'Brien, Charles R Crowell, James Schmiedeler
This study examines the effect of error augmentation of center of pressure (CoP) visual feedback on the performance of a lateral weight shifting task. Error augmentation emphasizes deviations from a standard CoP trajectory generated from existing data of over 2000 weight shifts collected with young, healthy subjects. Thirty-six subjects completed nine lateral weight shifting sessions, of which four were training sessions between each of the five testing sessions. Half of the subjects received error augmentation feedback during the training sessions, while the other half received the unaltered, control feedback...
March 6, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28323684/shifting-spatial-neglect-with-repeated-line-bisections-possible-role-of-lateralized-attentional-fatigue
#5
Mary Woods, John B Williamson, Keith D White, Charles G Maitland, Kenneth M Heilman
BACKGROUND AND OBJECTIVE: Many patients who have signs of neglect immediately after a right hemisphere stroke remain disabled even when they improve on tests of neglect. Few patients are tested for attentional persistence and fatigue despite their importance in many instrumental activities. To investigate whether stimulus repetition might alter the allocation of attention, we repeatedly tested a patient 16 weeks after she developed hemispatial neglect from a right hemisphere stroke. METHODS: During each of three testing sessions given in 1 day, we asked the patient to bisect 90 lines of two lengths, presented in 30-trial blocks in three locations: left, center, and right of her midsagittal plane, partially counterbalanced across sessions...
March 2017: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
https://www.readbyqxmd.com/read/28321835/teriflunomide-for-multiple-sclerosis-in-real-world-setting
#6
M L Elkjaer, T Molnar, Z Illes
OBJECTIVES: Teriflunomide 14 mg is a once-daily oral disease-modifying treatment for relapsing-remitting multiple sclerosis. We examined adverse event (AE) profile and efficacy in real life. MATERIALS AND METHODS: In this observational cohort study, we retrospectively examined 1521 blood samples and data of 102 patients followed for up to 28 months. RESULTS: The number of female patients starting teriflunomide peaked in the fifth decade, 10 years later compared to male patients (P<...
March 20, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28320656/targeting-effects-on-the-volume-of-the-focused-ultrasound-induced-blood-brain-barrier-opening-in-non-human-primates-in-vivo
#7
Maria Eleni Karakatsani, Gesthimani Samiotaki, Matthew Downs, Vincent Ferrera, Elisa Konofagou
Drug delivery to subcortical regions is susceptible to the blood-brain barrier (BBB) impeding the molecular exchange between the blood stream and the brain parenchyma. Focused ultrasound coupled with the administration of microbubbles has been proven to open the BBB locally, transiently and non-invasively both in rodents and in Non-Human-Primates (NHPs). The development of this disruption technique independent of MRI monitoring is of primordial importance yet restrained to the targeting optimization. The current paper establishes the linear relationship of the incidence angle with the volume of BBB opening (VBBB) and the Peak Negative Pressure (PNP) when sonicating the Caudate Nucleus and the Putamen region of five non-human-primates...
March 13, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28319185/real-time-monitoring-of-human-blood-brain-barrier-disruption
#8
Vesa Kiviniemi, Vesa Korhonen, Jukka Kortelainen, Seppo Rytky, Tuija Keinänen, Timo Tuovinen, Matti Isokangas, Eila Sonkajärvi, Topi Siniluoto, Juha Nikkinen, Seppo Alahuhta, Osmo Tervonen, Taina Turpeenniemi-Hujanen, Teemu Myllylä, Outi Kuittinen, Juha Voipio
Chemotherapy aided by opening of the blood-brain barrier with intra-arterial infusion of hyperosmolar mannitol improves the outcome in primary central nervous system lymphoma. Proper opening of the blood-brain barrier is crucial for the treatment, yet there are no means available for its real-time monitoring. The intact blood-brain barrier maintains a mV-level electrical potential difference between blood and brain tissue, giving rise to a measurable electrical signal at the scalp. Therefore, we used direct-current electroencephalography (DC-EEG) to characterize the spatiotemporal behavior of scalp-recorded slow electrical signals during blood-brain barrier opening...
2017: PloS One
https://www.readbyqxmd.com/read/28315779/energy-and-macronutrient-intake-over-the-course-of-the-day-of-german-adults-a-dedipac-study
#9
Friederike Wittig, Eva Hummel, Germaine Wenzler, Thorsten Heuer
The aim of the study was to analyze the energy and macronutrient intake over the course of the day of selected population groups in Germany defined by sex, age, BMI, SES, and diet quality. The study was based on food consumption data from the German National Nutrition Survey II (2005-2007) assessed by two 4-day dietary weighing records of 662 women and men aged between 18 and 80 years. Energy and macronutrient intake were calculated using the German Nutrient Database 3.02 and summarized for the periods 'morning', 'midday', 'afternoon', 'evening', and 'night'...
March 15, 2017: Appetite
https://www.readbyqxmd.com/read/28314544/comprehensive-assessments-of-long-term-sleep-habits-in-epidemiological-study-validity-and-reliability-of-sleep-factors-questionnaire-sfq-among-chinese-women
#10
Wan-Shui Yang, Wen-Xue Fu, Xin Wang, Qin Deng, Ling Wang, Lin-Yan Wang, Hao Zhao, Wen-Yan Fan, Shao-Xin Huang
OBJECTIVE: Epidemiological studies suggested that poor sleep is a potentially novel risk factor for several health outcomes currently; however, there are no validated questionnaires that can systematically measure sleep parameters within these studies. We evaluated the reliability and validity of 17-item sleep factors questionnaire (SFQ), which was developed to comprehensively assess long-term sleep habits for the Jiujiang Breast Cancer Study (JBCS), Jiujiang, China. METHODS: The participants included 100 women aged 18-74years, who were randomly selected from the JBCS project, and completed a SFQ at baseline and again 1year later, and 4 quarterly 30 consecutive days (a total of 120days) sleep diaries over this same year...
April 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28304096/insertion-depth-impacts-speech-perception-and-hearing-preservation-for-lateral-wall-electrodes
#11
Brendan P O'Connell, Jacob B Hunter, David S Haynes, Jourdan T Holder, Matt M Dedmon, Jack H Noble, Benoit M Dawant, George B Wanna
OBJECTIVES: 1) Examine angular insertion depths (AID) and scalar location of Med-El (GmbH Innsbruck, Austria) electrodes; and 2) determine the relationship between AID and audiologic outcomes controlling for scalar position. STUDY DESIGN: Retrospective review. METHODS: Postlingually deafened adults undergoing cochlear implantation with Flex 24, Flex 28, and Standard electrode arrays (Med-El) were identified. Patients with preoperative and postoperative computed tomography scans were included so that electrode location and AID could be determined...
March 17, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28303652/photoperiod-cues-and-patterns-of-genetic-variation-limit-phenological-responses-to-climate-change-in-warm-parts-of-species-range-modeling-diameter-growth-cessation-in-coast-douglas-fir
#12
Kevin R Ford, Constance A Harrington, J Bradley St Clair
The phenology of diameter-growth cessation in trees will likely play a key role in mediating species and ecosystem responses to climate change. A common expectation is that warming will delay cessation, but the environmental and genetic influences on this process are poorly understood. We modeled the effects of temperature, photoperiod and seed-source climate on diameter-growth cessation timing in coast Douglas-fir (an ecologically and economically vital tree) using high-frequency growth measurements across broad environmental gradients for a range of genotypes from different seed sources...
March 16, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28302232/giant-ganglioneuroma-in-a-5-year-child
#13
Fazal Wahab Khan, Saulat Hasnain Fatimi, Hamza Abdur Rahim Khan
We report a 5-year boy presenting with pain in the lower chest and upper abdomen. On evaluation with computed tomography scan of the chest, he was found to have a large 16 x 14 cm posterior mediastinal mass compressing the inferior vena cava and liver, and shifting the heart to the opposite side. Tumor was approached via right postero-lateral thoracotomy and dissected off from esophagus, heart, inferior vena cava and lungs. The entire tumor was resected without any complications. Postoperative course was unremarkable...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28300494/three-dimensional-morphological-characterization-of-malocclusions-with-mandibular-lateral-displacement-using-cone-beam-computed-tomography
#14
Roberto L Velásquez, Jorge C Coro, Alejandra Londoño, Susan P McGorray, Timothy T Wheeler, Sadao Sato
OBJECTIVE: The purpose of this study was to evaluate the morphologic characteristics of MLD malocclusions using 3D imaging. MATERIALS AND METHODS: MLD characteristics were examined using CBCT data in 40 subjects. A 3D Cephalometric analysis was developed to describe the spatial position of the mandible and temporal bones. RESULTS: Vertical dental heights were shorter and the posterior occlusal plane (POP) presented a steeper sagittal inclination on the shifted side (the side of the laterally displaced bony chin) than on the contralateral side...
March 16, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28300386/evaluation-of-a-surface-imaging-system-s-isocenter-calibration-methods
#15
Adam B Paxton, Ryan P Manger, Todd Pawlicki, Gwe-Ya Kim
AlignRT is a surface imaging system that has been utilized for localizing and tracking patient position during radiotherapy. AlignRT has two calibration procedures that can set the system's isocenter called "Monthly Calibration" (MC) and "Isocentre Calibration" (IC). The MC utilizes a calibration plate. In addition to the calibration plate, the IC utilizes a cubic phantom that is imaged with the linac treatment beam to aid in aligning the AlignRT and treatment-beam isocenters. This work evaluated the effects of misaligning the calibration plate during the calibration process...
March 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28298634/weaning-age-influences-the-severity-of-gastrointestinal-microbiome-shifts-in-dairy-calves
#16
S J Meale, S C Li, P Azevedo, H Derakhshani, T J DeVries, J C Plaizier, M A Steele, E Khafipour
Ruminants microbial consortium is responsible for ruminal fermentation, a process which converts fibrous feeds unsuitable for human consumption into desirable dairy and meat products, begins to establish soon after birth. However, it undergoes a significant transition when digestion shifts from the lower intestine to ruminal fermentation. We hypothesised that delaying the transition from a high milk diet to an exclusively solid food diet (weaning) would lessen the severity of changes in the gastrointestinal microbiome during this transition...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28298555/low-lifetime-stress-exposure-is-associated-with-reduced-stimulus-response-memory
#17
Elizabeth V Goldfarb, Grant S Shields, Nathaniel D Daw, George M Slavich, Elizabeth A Phelps
Exposure to stress throughout life can cumulatively influence later health, even among young adults. The negative effects of high cumulative stress exposure are well-known, and a shift from episodic to stimulus-response memory has been proposed to underlie forms of psychopathology that are related to high lifetime stress. At the other extreme, effects of very low stress exposure are mixed, with some studies reporting that low stress leads to better outcomes, while others demonstrate that low stress is associated with diminished resilience and negative outcomes...
April 2017: Learning & Memory
https://www.readbyqxmd.com/read/28298350/the-acacia-ants-revisited-convergent-evolution-and-biogeographic-context-in-an-iconic-ant-plant-mutualism
#18
Philip S Ward, Michael G Branstetter
Phylogenetic and biogeographic analyses can enhance our understanding of multispecies interactions by placing the origin and evolution of such interactions in a temporal and geographical context. We use a phylogenomic approach-ultraconserved element sequence capture-to investigate the evolutionary history of an iconic multispecies mutualism: Neotropical acacia ants (Pseudomyrmex ferrugineus group) and their associated Vachellia hostplants. In this system, the ants receive shelter and food from the host plant, and they aggressively defend the plant against herbivores and competing plants...
March 15, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28298053/passive-anterior-tibial-subluxation-in-the-setting-of-anterior-cruciate-ligament-injuries
#19
Lucas S McDonald, Jelle P van der List, Kristofer J Jones, Hendrik A Zuiderbaan, Joseph T Nguyen, Hollis G Potter, Andrew D Pearle
BACKGROUND: Static anterior tibial subluxation after an anterior cruciate ligament (ACL) injury highlights the abnormal relationship between the tibia and femur in patients with ACL insufficiency, although causal factors including injuries to secondary stabilizers or the time from injury to reconstruction have not been examined. PURPOSE: To determine static relationships between the tibia and femur in patients with various states of ACL deficiency and to identify factors associated with anterior tibial subluxation...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28297977/periodic-orbits-in-tall-laterally-heated-rectangular-cavities
#20
Marta Net, Juan Sánchez Umbría
This study elucidates the origin of the multiplicity of stable oscillatory flows detected by time integration in tall rectangular cavities heated from the side. By using continuation techniques for periodic orbits, it is shown that initially unstable branches, arising at Hopf bifurcations of the basic steady flow, become stable after crossing Neimark-Sacker points. There are no saddle-node or pitchfork bifurcations of periodic orbits, which could have been alternative mechanisms of stabilization. According to the symmetries of the system, the orbits are either fixed cycles, which retain at any time the center symmetry of the steady flow, or symmetric cycles involving a time shift in the global invariance of the orbit...
February 2017: Physical Review. E
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