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https://www.readbyqxmd.com/read/28211683/the-central-role-of-bicarbonate-in-the-electrochemical-re-duction-of-carbon-dioxide-on-gold
#1
Marco Dunwell, Qi Lu, Jeffrey M Heyes, Jonathan Rosen, Jingguang G Chen, Yushan Yan, Feng Jiao, Bingjun Xu
Much effort has been devoted in the development of efficient catalysts for electrochemical reduction of CO2. Molecular level understanding of electrode-mediated process, particularly the role of bicarbonate in increasing CO2 reduction rates, is still lacking due to the difficulty of directly probing the electrochemical interface. We developed a protocol to observe normally invisible reaction intermediates with a surface enhanced spectroscopy by applying square-wave potential profiles. Further, we demonstrate that bicarbonate, through equilibrium exchange with dissolved CO2, rather than the supplied CO2, is the primary source of carbon in the CO formed at the Au electrode by a combination of in-situ spectroscopic, isotopic labeling, and mass spectroscopic investigations...
February 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28211549/review-of-health-and-risk-behaviours-mental-health-problems-and-suicidal-behaviours-in-young-europeans-on-the-basis-of-the-results-from-the-eu-funded-saving-and-empowering-young-lives-in-europe-seyle-study
#2
REVIEW
Danuta Wasserman
An estimated 800 000 suicide deaths occur worldwide. The global suicide rate is 11.4 per 100 000 population; 15.0/100 000 for males and 8.0/100 000 for females. Globally, suicide is the second leading cause of death in 15-29 year olds. In a collaborative effort to reduce the high rates of suicide and mental health problems among youth across Europe, the European Union 7th Framework funded the Saving and Empowering Young Lives in Europe (SEYLE) project. SEYLE is a randomized controlled trial (RCT) aimed to promote mental health and healthy lifestyles, while preventing psychopathology and suicidal behaviours among adolescents...
December 23, 2016: Psychiatria Polska
https://www.readbyqxmd.com/read/28210486/touch-accelerates-visual-awareness
#3
Claudia Lunghi, Luca Lo Verde, David Alais
To efficiently interact with the external environment, our nervous system combines information arising from different sensory modalities. Recent evidence suggests that cross-modal interactions can be automatic and even unconscious, reflecting the ecological relevance of cross-modal processing. Here, we use continuous flash suppression (CFS) to directly investigate whether haptic signals can interact with visual signals outside of visual awareness. We measured suppression durations of visual gratings rendered invisible by CFS either during visual stimulation alone or during visuo-haptic stimulation...
January 2017: I-Perception
https://www.readbyqxmd.com/read/28210315/news
#4
REVIEW
(no author information available yet)
Rare diseases are defined by a limited prevalence of ≤5 cases per 10 000 individuals in Europe [1]. This definition includes around 8000 diseases, many of which are unknown not only to the public but also to the vast majority of healthcare professionals and text books. It is estimated that, as a whole, rare diseases affect around 25 to 30 million people in Europe. Most rare diseases are chronic and debilitating and appear in early childhood or young adulthood, accounting for a significant proportion of infant mortality and childhood/life-long disability...
December 2016: Breathe
https://www.readbyqxmd.com/read/28198841/optical-neutrality-invisibility-without-cloaking
#5
Reed Hodges, Cleon Dean, Maxim Durach
We show that it is possible to design an invisible wavelength-sized metal-dielectric metamaterial object without evoking cloaking. Our approach is an extension of the neutral inclusion concept by Zhou and Hu [Phys. Rev. E74, 026607 (2006)PLEEE81063-651X10.1103/PhysRevE.74.026607] to Mie scatterers. We demonstrate that an increase of metal fraction in the metamaterial leads to a transition from dielectric-like to metal-like scattering, which proceeds through invisibility or optical neutrality of the scatterer...
February 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28196276/pcr-fishing-for-red-endophytes-in-british-columbia-kallymeniaceae-gigartinales-florideophyceae-uncovers-the-species-rich-kallymenicola-gen-nov-palmariales-nemaliophycidae
#6
Joshua R Evans, Gary W Saunders
Unexpected contaminants uncovered during routine COI-5P DNA barcoding of British Columbia Kallymeniaceae indicated the presence of a novel lineage allied to the family Meiodiscaceae, Palmariales. Available rbcL data for species of this family were used to design specific primers to screen for the presence of the meiodiscacean species in 534 kallymeniacean specimens primarily from British Columbia, Canada. Ultimately, 43 positive PCR products representing six diverse genetic groups from nine host species were uncovered; three are described here in the new genus Kallymenicola gen...
February 14, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28195227/non-blind-acoustic-invisibility-by-dual-layers-of-homogeneous-single-negative-media
#7
He Gao, Yi-Fan Zhu, Xu-Dong Fan, Bin Liang, Jing Yang, Jian-Chun Cheng
Non-blind invisibility cloaks allowing the concealed object to sense the outside world have great application potentials such as in high-precision sensing or underwater camouflage. However the existing designs based on coordinate transformation techniques need complicated spatially-varying negative index or intricate multi-layered configurations, substantially increasing the difficulty in practical realization. Here we report on the non-blind acoustic invisibility for a circular object in free space with simple distribution of cloak parameters...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28194331/-the-invisible-participant-s-experiences-in-clinical-trials
#8
Sarojini Nadimpally, Divya Bhagianadh
BACKGROUND: The paper discussing the perspectives of clinical trial participants about the various aspects of CTs is based on the primary research conducted by Sama in 2012-13. METHODOLOGY: In-depth interviews were conducted with 36 CT participants from the states of New Delhi, Gujarat, Maharashtra and Andhra Pradesh. In addition to CT participants, other key informants including investigators, representatives of Contract Research Organizations (CROs), sponsor, Ethics Committee (EC) members etc...
January 2017: Perspectives in Clinical Research
https://www.readbyqxmd.com/read/28192839/accuracy-of-focal-laser-treatment-based-on-external-imaging-oct-using-a-navigated-retinal-laser-system-a-case-series
#9
S Voegeli, J P Howell, P Marti, M K Schmid
Background The navigated laser photocoagulation system (NAVILAS®, OD-OS GmBH, Teltow, Germany) is a laser treatment device that provides navigated laser treatment of the retina based on a fundus image. The purpose of this study was to investigate the accuracy of laser treatment based on external optical coherence tomography (OCT) images - a new application of the device. Patients and Methods This retrospective case series evaluated the accuracy of laser spot placement in 7 eyes after using overlaid external OCT images for planning NAVILAS laser treatment...
February 13, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28188484/estimation-of-attachment-regions-of-hip-muscles-in-ct-image-using-muscle-attachment-probabilistic-atlas-constructed-from-measurements-in-eight-cadavers
#10
Norio Fukuda, Yoshito Otake, Masaki Takao, Futoshi Yokota, Takeshi Ogawa, Keisuke Uemura, Ryota Nakaya, Kazunori Tamura, Robert B Grupp, Amirhossein Farvardin, Mehran Armand, Nobuhiko Sugano, Yoshinobu Sato
PURPOSE: Patient-specific musculoskeletal biomechanical simulation is useful in preoperative surgical planning and postoperative assessment in orthopedic surgery and rehabilitation medicine. A difficulty in application of the patient-specific musculoskeletal modeling comes from the fact that the muscle attachment regions are typically invisible in CT and MRI. Our purpose is to develop a method for estimating patient-specific muscle attachment regions from 3D medical images and to validate with cadaver experiments...
February 10, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28186756/kinetics-of-alpha-2-6-dimethylphenl-vinyllithium-how-to-control-errors-caused-by-inefficient-mixing-with-pairs-of-rapidly-competing-ketones
#11
Rudolf Knorr, Monika Knittl, Claudia Behringer, Jakob Ruhdorfer, Petra Böhrer
Kinetic studies are a suitable tool to disclose the role of tiny reagent fractions. The title compound 2 reacted in a kinetic reaction order of 0.5 (square root of its concentration) with an excess of the electrophiles ClSiMe3, 1-bromobutane (n-BuBr), or 1-iodobutane (n-BuI) at 32 degrees C in Et2O or in hydrocarbon solvents. This revealed that the tiny (NMR-invisible) amount of a deaggregated equilibrium component (presumably monomeric 2) was the reactive species, whereas the disolvated dimer of 2 was only indirectly involved as a supply depot...
February 10, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28186484/visible-minority-nurses-and-vertical-mobility-in-hospitals
#12
Naima Bouabdillah, Dave Holmes, Jocelyne Tourigny
Canada has experienced a significant change in its ethnic and cultural composition in recent decades. The sustained immigration from non-European countries has given rise to new generation of visible minorities. This new trend is clearly reflected in healthcare institutions. However, the number of visible minority nurses (VMN) is particularly low in management positions. This research adopting critical ethnography and postcolonial approach focuses on the career paths of VMN in Canadian healthcare institutions...
1, 2016: Recherche en Soins Infirmiers
https://www.readbyqxmd.com/read/28185566/a-continuous-analog-of-run-length-distributions-reflecting-accumulated-fractionation-events
#13
Zhe Yu, David Sankoff
BACKGROUND: We propose a new, continuous model of the fractionation process (duplicate gene deletion after polyploidization) on the real line. The aim is to infer how much DNA is deleted at a time, based on segment lengths for alternating deleted (invisible) and undeleted (visible) regions. RESULTS: After deriving a number of analytical results for "one-sided" fractionation, we undertake a series of simulations that help us identify the distribution of segment lengths as a gamma with shape and rate parameters evolving over time...
November 11, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28184189/gender-differences-in-neural-responses-to-perceptually-invisible-fearful-face-an-erp-study
#14
Seung A Lee, Chai-Youn Kim, Miseon Shim, Seung-Hwan Lee
Women tend to respond to emotional stimuli differently from men. This study aimed at investigating whether neural responses to perceptually "invisible" emotional stimuli differ between men and women by exploiting event-related potential (ERP). Forty healthy participants (21 women) were recruited for the main experiment. A control experiment was conducted by excluding nine (7 women) participants from the main experiment and replacing them with additional ten (6 women) participants (total 41 participants) where Beck's Anxiety Inventory (BAI) and Beck's Depression Inventory (BDI) scores were controlled...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28182059/assessment-of-slice-thickness-effect-on-visibility-of-inferior-alveolar-canal-in-cone-beam-computed-tomography-images
#15
Daryoush Goodarzi Pour, Banafsheh Arzi, Ahmad Reza Shamshiri
OBJECTIVE: The aim of this study is to evaluate the effect of slice thickness on the visibility of inferior alveolar canal (IAC) in cone-beam computed tomography (CBCT) images. MATERIALS AND METHODS: CBCT images of thirty patients (15 male and 15 female) with an age range between 40-50 years old were used. Cross-sectional images were obtained with 0.5, 1, and 2 mm slice thickness and 2 mm interval. Two oral radiologists with at least 5 years' of experience observed all of the 90 images and rated the images based on the visibility of IAC in a 4-score classification (highly visible, visible, nearly visible, nearly invisible)...
November 2016: Dental Research Journal
https://www.readbyqxmd.com/read/28179649/an-intermediate-mass-black-hole-in-the-centre-of-the-globular-cluster-47-tucanae
#16
Bülent Kızıltan, Holger Baumgardt, Abraham Loeb
Intermediate-mass black holes should help us to understand the evolutionary connection between stellar-mass and super-massive black holes. However, the existence of intermediate-mass black holes is still uncertain, and their formation process is therefore unknown. It has long been suspected that black holes with masses 100 to 10,000 times that of the Sun should form and reside in dense stellar systems. Therefore, dedicated observational campaigns have targeted globular clusters for many decades, searching for signatures of these elusive objects...
February 8, 2017: Nature
https://www.readbyqxmd.com/read/28176657/emerging-methods-for-structural-analysis-of-protein-aggregation
#17
Eshan Khan, Amit Kumar
Protein misfolding and aggregation is a key attribute of different neurodegenerative diseases. Misfolded and aggregated proteins are intrinsically disordered and rule out structure based drug design. The comprehensive characterization of misfolded proteins and associated aggregation pathway is prerequisite to develop therapeutics for neurodegenerative diseases caused due to the protein aggregation. Visible protein aggregates used to be the final stage during aggregation mechanism. The structural analysis of intermediate steps in such protein aggregates will help us to discern the conformational role and subsequently involved pathways...
February 6, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28176183/improving-the-visual-field-in-coronary-artery-by-with-non-obstructive-angioscopy-dual-infusion-method
#18
Sei Komatsu, Tomoki Ohara, Satoru Takahashi, Mitsuhiko Takewa, Chikao Yutani, Kazuhisa Kodama
Non-obstructive angioscopy (NOA) is used to visualize the surface of the coronary artery, and a clear visual field is obtained by injecting transparent fluid into the gap between the probing catheter and the fiber. This study examines visual field expansion by a dual infusion method, which involves an infusion from the probing and guiding catheters, and the relationships between visual grade and vessel characteristics. Thirty-two patients and thirty patients performed coronary plaque analysis with NOA using the conventional method and the novel dual infusion method, respectively...
February 7, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28170162/gel-like-carbon-dots-characterization-and-their-potential-applications
#19
Yiqun Zhou, Alexandra Desserre, Shiv Kumar Sharma, Shanghao Li, Marvin Marksberry, Charles Chusuei, Patrica Blackwelder, Roger M Leblanc
A type of highly photoluminescent gel-like carbon dots (G-CDs) was successfully synthesized for the first time, by a rapid one-step solvothermal synthesis approach with citric acid and 1, 2-ethylenediamine (EDA) as the precursors. Their gel-like nature was revealed by the Tyndall and coagulation effect which was elucidated by their negative Zeta potential value. The influence of temperatures on the properties and sizes of these G-CDs was analyzed and the best method for maximum quantum yield (QY) was identified...
February 7, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28168566/the-value-of-cultures-to-modern-microbiology
#20
Brian Austin
Since the late nineteenth century, pure cultures have been regarded as the cornerstone of bacteriology. However, not all bacteria will multiply sufficiently to produce visible colonies on solid media; some cells will produce micro-colonies that are invisible to the naked eye. Moreover, the proportion of culturable cells that produce visible growth will vary according to the species and the state of the cells-are they actively growing or comparatively inactive? The latter have a poorer rate of recovery in terms of cultivability...
February 6, 2017: Antonie Van Leeuwenhoek
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