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https://www.readbyqxmd.com/read/28339253/distinct-evolutions-of-weyl-fermion-quasiparticles-and-fermi-arcs-with-bulk-band-topology-in-weyl-semimetals
#1
N Xu, G Autès, C E Matt, B Q Lv, M Y Yao, F Bisti, V N Strocov, D Gawryluk, E Pomjakushina, K Conder, N C Plumb, M Radovic, T Qian, O V Yazyev, J Mesot, H Ding, M Shi
The Weyl semimetal phase is a recently discovered topological quantum state of matter characterized by the presence of topologically protected degeneracies near the Fermi level. These degeneracies are the source of exotic phenomena, including the realization of chiral Weyl fermions as quasiparticles in the bulk and the formation of Fermi arc states on the surfaces. Here, we demonstrate that these two key signatures show distinct evolutions with the bulk band topology by performing angle-resolved photoemission spectroscopy, supported by first-principles calculations, on transition-metal monophosphides...
March 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28338758/mistletoe-infestation-mediates-alteration-of-the-phytohormone-profile-and-anti-oxidative-metabolism-in-bark-and-wood-of-its-host-pinus-sylvestris
#2
Bin Hu, Hitoshi Sakakibara, Yumiko Takebayashi, Franziska S Peters, Jörg Schumacher, Monika Eiblmeier, Leila Arab, Jürgen Kreuzwieser, Andrea Polle, Heinz Rennenberg
European mistletoe (Viscum album L.) has largely infested Central European forests and causes high mortality probability particularly in dry years. However, little information is available about the consequences of mistletoe infestation for metabolic processes in bark and wood of its host, despite their important roles in infestation defense. We analyzed the tissue hydration, carbohydrate composition, phytohormone profile, reactive oxygen species and anti-oxidant levels in bark and wood of Scots pines (Pinus sylvestris L...
February 9, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28337568/hospital-microbial-surface-colonization-revealed-during-monitoring-of-klebsiella-spp-pseudomonas-aeruginosa-and-non-tuberculous-mycobacteria
#3
Pedro Geadas Farias, Fernando Gama, Diogo Reis, Susana Alarico, Nuno Empadinhas, José Carlos Martins, Ana Figueiredo de Almeida, Paula Vasconcelos Morais
Hospital environmental conditions, human occupancy, and the characteristics of the equipment influence the survival of microbial communities and raise a concern with regard to nosocomial infections. The objective of the present work was to use the monitoring of Pseudomonas aeruginosa, Klebsiella spp. and non-tuberculous mycobacteria as a strategy to improve knowledge on microbial colonization of non-critical equipment and surfaces, in a tertiary hospital from Central Portugal. A 3-month microbiological survey was performed in a district teaching hospital...
March 23, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28336572/the-computational-and-neural-basis-of-rhythmic-timing-in-medial-premotor-cortex
#4
Hugo Merchant, Bruno B Averbeck
The neural underpinnings of rhythmic behavior, including music and dance, have been studied using the synchronization-continuation task (SCT), where subjects initially tap in synchrony with an isochronous metronome and then keep tapping at a similar rate via an internal beat mechanism. Here, we provide behavioral and neural evidence that supports a resetting drift-diffusion model (DDM) during SCT. Behaviorally, we show the model replicates the linear relation between the mean and standard-deviation of the intervals produced by monkeys in SCT...
March 23, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28336137/an-ultra-sensitive-method-for-the-analysis-of-perfluorinated-alkyl-acids-in-drinking-water-using-a-column-switching-high-performance-liquid-chromatography-tandem-mass-spectrometry
#5
Kavitha Dasu, Shoji F Nakayama, Mitsuha Yoshikane, Marc A Mills, J Michael Wright, Shelley Ehrlich
In epidemiological research, it has become increasingly important to assess subjects' exposure to different classes of chemicals in multiple environmental media. It is a common practice to aliquot limited volumes of samples into smaller quantities for specific trace level chemical analyses. A novel method was developed for the determination of 14 perfluorinated alkyl acids (PFAAs) in small volumes (10mL) of drinking water using off-line solid phase extraction (SPE) pre-treatment followed by on-line pre-concentration on a WAX column before analysis on column-switching high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS)...
March 6, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28335974/selective-solid-phase-extraction-of-lanthanides-from-tap-and-river-waters-with-ion-imprinted-polymers
#6
Manel Moussa, Massamba Mbacké Ndiaye, Thomas Pinta, Valérie Pichon, Thomas Vercouter, Nathalie Delaunay
For the first time, an ion imprinted polymer (IIP) able to selectively extract simultaneously all the lanthanide ions was successfully synthesized in acetonitrile using Nd(3+) as a template ion, methacrylic acid as a complexing monomer, and ethylene glycol dimethacrylate as a cross-linker. A non-imprinted polymer (NIP) was synthesized under the same conditions as those of the IIP, but in the absence of the template ion. After the removal of the template ions, grounding and sieving, the IIP particles were packed in solid phase extraction (SPE) cartridges...
April 22, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28334676/manual-motor-speed-dysfunction-as-a-neurocognitive-endophenotype-in-euthymic-bipolar-disorder-patients-and-their-healthy-relatives-evidence-from-a-5-year-follow-up-study
#7
P Correa-Ghisays, V Balanzá-Martínez, G Selva-Vera, J Vila-Francés, E Soria-Olivas, J Vivas-Lalinde, C San Martín, A M Borrás, R Ayesa-Arriola, J Sanchez-Moreno, J Sánchez-Ort, B Crespo-Facorro, E Vieta, R Tabarés-Seisdedos
BACKGROUND: Few studies have examined Manual Motor Speed (MMS) in bipolar disorder (BD). The aim of this longitudinal, family study was to explore whether dysfunctional MMS represents a neurocognitive endophenotype of BD. METHODS: A sample of 291 subjects, including 131 BD patients, 77 healthy first-degree relatives (BD-Rel), and 83 genetically-unrelated healthy controls (HC), was assessed with the Finger-Tapping Test (FTT) on three occasions over a 5-year period...
March 16, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28334673/presence-of-the-%C3%AE-triketone-herbicide-tefuryltrione-in-drinking-water-sources-and-its-degradation-product-in-drinking-waters
#8
Motoyuki Kamata, Mari Asami, Yoshihiko Matsui
Triketone herbicides are becoming popular because of their herbicidal activity against sulfonylurea-resistant weeds. Among these herbicides, tefuryltrione (TFT) is the first registered herbicide for rice farming, and recently its distribution has grown dramatically. In this study, we developed analytical methods for TFT and its degradation product 2-chloro-4-methylsulfonyl-3-[(tetrahydrofuran-2-yl-methoxy) methyl] benzoic acid (CMTBA). TFT was found frequently in surface waters in rice production areas at concentrations as high as 1...
March 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28334644/low-level-inorganic-arsenic-exposure-and-neuropsychological-functioning-in-american-indian-elders
#9
Clint R Carroll, Carolyn Noonan, Eva M Garroutte, Ana Navas-Acien, Steven P Verney, Dedra Buchwald
BACKGROUND: Inorganic arsenic at high and prolonged doses is highly neurotoxic. Few studies have evaluated whether long-term, low-level arsenic exposure is associated with neuropsychological functioning in adults. OBJECTIVES: To investigate the association between long-term, low-level inorganic arsenic exposure and neuropsychological functioning among American Indians aged 64-95. METHODS: We assessed 928 participants in the Strong Heart Study by using data on arsenic species in urine samples collected at baseline (1989-1991) and results of standardized tests of global cognition, executive functioning, verbal learning and memory, fine motor functioning, and speed of mental processing administered during comprehensive follow-up evaluations in 2009-2013...
March 18, 2017: Environmental Research
https://www.readbyqxmd.com/read/28333580/air-quality-measurements-from-rubber-bands-to-tapping-the-rainbow
#10
George M Hidy, Peter K Mueller, Samuel L Altshuler, Judith C Chow, John G Watson
It is axiomatic that good measurements are integral to good public policy for environmental protection. The generalized term for "measurements" includes sampling and quantitation, data integrity, documentation, network design, sponsorship and operations, and archiving and accessing for applications. Each of these components has evolved and advanced over the last 200 years as knowledge of atmospheric chemistry and physics has matured. Air quality was first detected by what people could see smoke and smell contaminated air...
March 23, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28333569/are-preferences-for-aggressive-medical-treatment-associated-with-healthcare-utilization-in-the-very-old
#11
Steven M Albert, June R Lunney, Lei Ye, Robert Boudreau, Diane Ives, Suzanne Satterfield, Cameron M Kaplan, Teresa Waters, Hilsa N Ayonayon, Susan M Rubin, Anne B Newman, Tamara Harris
OBJECTIVES: To examine the relationship between end-of-life (EOL) treatment preferences and recent hospitalization or emergency department (ED) care in the very old. DESIGN: Quarterly telephone follow-up of participants in the EOL in the Very Old cohort. SETTING: The EOL in the Very Old Age cohort drew from 1403 participants in the Health, Aging, and Body Composition (Health ABC) study who were alive in year 15 of follow-up. 87.5% (n = 1227) were successfully recontacted and enrolled...
March 23, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28332181/involvement-of-testicular-daam1-expression-in-zinc-protection-against-cadmium-induced-male-rat-reproductive-toxicity
#12
Marouane Chemek, Massimo Venditti, Sana Boughamoura, Safa Ben Mimouna, Imed Messaoudi, Sergio Minucci
In order to verify the effects of exposure to Cd and Zn on testicular DAAM1 gene and protein expression and also to ascertain their involvement in the protective role of Zn in prevent the testicular toxicity Cd-induced in male offspring rats at adult age after gestational and lactational exposure, male offspring rats, from mothers receiving either tap water, Cd, Zn or Cd + Zn during gestation and lactation periods, were scarified on postnatal days (PND) 70. The reproductive organ (testis, epididymis and vesicle seminal) were collected, weighed and analysed...
March 23, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28331834/ultrasound-guided-electrochemotherapy-for-the-treatment-of-a-clear-cell-thymoma-in-a-cat
#13
Enrico Pierluigi Spugnini, Francesco Menicagli, Michela Pettorali, Alfonso Baldi
A twelve-year-old male castrated domestic shorthair cat was presented for rapidly progressing respiratory distress. The cat was depressed, tachypneic and moderately responsive. Ultrasonography showed a mediastinal mass associated with a significant pleural effusion that needed tapping every five to seven days. Ultrasound guided biopsy yielded a diagnosis of clear cell thymoma upon histopathology. After complete staging procedures, the owner elected to treat the cat with electrochemotherapy (ECT) using systemic bleomycin...
2017: Open veterinary journal
https://www.readbyqxmd.com/read/28330257/generation-of-an-inducible-system-to-express-polo-like-kinase-cdc5-as-tap-fusion-protein-during-meiosis-in-saccharomyces-cerevisiae
#14
Rajni Vaid, Kamal Dev, Michael Lichten, Anuradha Sourirajan
Tandem affinity purification (TAP) is a highly efficient method for isolation of protein complexes from endogenous biological macromolecules. TAP system consists of dual affinity tags that facilitates the sequential purification of the desired proteins expressed at their low levels in vivo. Polo-like kinases (PLK) are serine/threonine protein kinases that are the crucial regulators of cell cycle. Cdc5, the solitary PLK in budding yeast Saccharomyces cerevisiae, has diverse array of targets in cell cycle. The present study was undertaken to construct an estrogen-inducible system for expression of Cdc5-TAP to isolate the substrates of Cdc5 during meiosis, particularly, pachytene stage of meiosis I...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329071/association-of-mild-obstructive-sleep-apnea-with-cognitive-performance-excessive-daytime-sleepiness-and-quality-of-life-in-the-general-population-the-korean-genome-and-epidemiology-study-koges
#15
Hyun Kim, Robert J Thomas, Chang-Ho Yun, Rhoda Au, Seung Ku Lee, Sunghee Lee, Chol Shin
Study Objectives: Research points to impaired cognitive performance in sleep clinic patients with obstructive sleep apnea (OSA). However, inconsistent findings from various epidemiologic studies make this relationship less generalizable. The current study investigated the association between OSA functional outcome measures, such as cognition, daytime sleepiness, and quality of life, in a Korean general population sample. Methods: A total of 1,492 participants from the Korean Genome and Epidemiology Study (KoGES) were included in the analyses...
January 28, 2017: Sleep
https://www.readbyqxmd.com/read/28328499/importance-of-matching-physical-friction-hardness-and-texture-in-creating-realistic-haptic-virtual-surfaces
#16
Heather Culbertson, Katherine J Kuchenbecker
Interacting with physical objects through a tool elicits tactile and kinesthetic sensations that comprise your haptic impression of the object. These cues, however, are largely missing from interactions with virtual objects, yielding an unrealistic user experience. This article evaluates the realism of virtual surfaces rendered using haptic models constructed from data recorded during interactions with real surfaces. The models include three components: surface friction, tapping transients, and texture vibrations...
January 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28327346/genuine-eye-contact-elicits-self-referential-processing
#17
Jonne O Hietanen, Jari K Hietanen
The effect of eye contact on self-awareness was investigated with implicit measures based on the use of first-person singular pronouns in sentences. The measures were proposed to tap into self-referential processing, that is, information processing associated with self-awareness. In addition, participants filled in a questionnaire measuring explicit self-awareness. In Experiment 1, the stimulus was a video clip showing another person and, in Experiment 2, the stimulus was a live person. In both experiments, participants were divided into two groups and presented with the stimulus person either making eye contact or gazing downward, depending on the group assignment...
March 16, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28327094/finger-tapping-impairments-are-highly-sensitive-for-evaluating-upper-motor-neuron-lesions
#18
Afsaneh Shirani, Braeden D Newton, Darin T Okuda
BACKGROUND: Identifying highly sensitive and reliable neurological exam components are crucial in recognizing clinical deficiencies. This study aimed to investigate finger tapping performance differences between patients with CNS demyelinating lesions and healthy control subjects. METHODS: Twenty-three patients with multiple sclerosis or clinically isolated syndrome with infratentorial and/or cervical cord lesions on MRI, and 12 healthy controls were videotaped while tapping the tip of the index finger against the tip and distal crease of the thumb using both the dominant and non-dominant hand...
March 21, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28326308/infection-sources-of-a-common-non-tuberculous-mycobacterial-pathogen-mycobacterium-avium-complex
#19
REVIEW
Yukiko Nishiuchi, Tomotada Iwamoto, Fumito Maruyama
Numerous studies have revealed a continuous increase in the worldwide incidence and prevalence of non-tuberculous mycobacteria (NTM) diseases, especially pulmonary Mycobacterium avium complex (MAC) diseases. Although it is not clear why NTM diseases have been increasing, one possibility is an increase of mycobacterial infection sources in the environment. Thus, in this review, we focused on the infection sources of pathogenic NTM, especially MAC. The environmental niches for MAC include water, soil, and dust...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28326164/ptsd-symptom-severity-relates-to-cognitive-and-psycho-social-dysfunctioning-a-study-with-congolese-refugees-in-uganda
#20
Herbert E Ainamani, Thomas Elbert, David K Olema, Tobias Hecker
Background: In the ongoing conflict in the Democratic Republic of the Congo (DRC), civilians have been heavily exposed to traumatic stressors. Traumatizing experiences cumulatively heighten the risk for trauma-related disorders, and with it affect cognitive and psycho-social functioning. Objectives: We aimed at investigating the association between trauma-related disorders and cognitive and psycho-social functioning and hypothesized that PTSD symptom severity would negatively correlate with executive functioning, working memory and psycho-social functioning in everyday life...
2017: European Journal of Psychotraumatology
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