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https://www.readbyqxmd.com/read/28635283/piezoresistive-effect-in-the-fe-htrz-2-trz-bf4-spin-crossover-complex
#1
Andrei Diaconu, Simona-Lacramioara Lupu, Ionela Rusu, Ioan-Marian Risca, Lionel Salmon, Gabor Molnár, Azzedine Bousseksou, Philippe Demont, Aurelian Rotaru
We report on the effect of hydrostatic pressure on the electrical conductivity and dielectric permittivity of the [Fe(Htrz)2(trz)](BF4) (Htrz = 1H-1,2,4, triazole) spin crossover complex. Variable temperature and pressure broadband imped-ance spectrometry revealed a piezo-resistive effect of more than one order of magnitude for pressures as low as 500 bar, associated with a large pressure-induced hysteresis of 1700 bar. The origin of the piezo-resistive effect has been attributed to the pressure induced spin-state switching in the complex and the associated P,T phase diagram was determined...
June 21, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28634613/breathing-induced-new-phase-transition-in-an-mil-53-al-nh2-metal-organic-framework-under-high-methane-pressures
#2
Linius Bolinois, Tanay Kundu, Xuerui Wang, Yuxiang Wang, Zhigang Hu, Kenny Koh, Dan Zhao
The high pressure methane sorption tests on a flexible metal-organic framework [MIL-53(Al)-NH2] reveal a new phase transition to a large pore (lp) phase above 45 bar. The mixed-ligand strategy and pressure cycling tests are suggested to reduce the pressure requirement of such a phase transition for applications in natural gas storage.
June 21, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28634610/efficiently-mapping-structure-property-relationships-of-gas-adsorption-in-porous-materials-application-to-xe-adsorption
#3
A R Kaija, C E Wilmer
Designing better porous materials for gas storage or separations applications frequently leverages known structure-property relationships. Reliable structure-property relationships, however, only reveal themselves when adsorption data on many porous materials are aggregated and compared. Gathering enough data experimentally is prohibitively time consuming, and even approaches based on large-scale computer simulations face challenges. Brute force computational screening approaches that do not efficiently sample the space of porous materials may be ineffective when the number of possible materials is too large...
June 21, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28634041/a-machine-learning-algorithm-toward-color-analysis-for-chronic-liver-disease-classification-employing-ultrasound-shear-wave-elastography
#4
Ilias Gatos, Stavros Tsantis, Stavros Spiliopoulos, Dimitris Karnabatidis, Ioannis Theotokas, Pavlos Zoumpoulis, Thanasis Loupas, John D Hazle, George C Kagadis
The purpose of the present study was to employ a computer-aided diagnosis system that classifies chronic liver disease (CLD) using ultrasound shear wave elastography (SWE) imaging, with a stiffness value-clustering and machine-learning algorithm. A clinical data set of 126 patients (56 healthy controls, 70 with CLD) was analyzed. First, an RGB-to-stiffness inverse mapping technique was employed. A five-cluster segmentation was then performed associating corresponding different-color regions with certain stiffness value ranges acquired from the SWE manufacturer-provided color bar...
June 17, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28632779/base-rate-sensitivity-through-implicit-learning
#5
Andrew J Wismer, Corey J Bohil
Two experiments assessed the contributions of implicit and explicit learning to base-rate sensitivity. Using a factorial design that included both implicit and explicit learning disruptions, we tested the hypothesis that implicit learning underlies base-rate sensitivity from experience (and that explicit learning contributes comparatively little). Participants learned to classify two categories of simple stimuli (bar graph heights) presented in a 3:1 base-rate ratio. Participants learned either from "observational" training to disrupt implicit learning or "response" training which supports implicit learning...
2017: PloS One
https://www.readbyqxmd.com/read/28632047/reliability-and-magnitude-of-mechanical-variables-assessed-from-unconstrained-and-constrained-loaded-countermovement-jumps
#6
Amador García-Ramos, Slobodan Jaric, Alejandro Pérez-Castilla, Paulino Padial, Belén Feriche
This study aimed to (1) assess the reliability of the force, velocity, and power output variables measured by a force plate and a linear velocity transducer (LVT) for both the unconstrained and constrained loaded countermovement jump (CMJ), and (2) examine the effect of both the CMJ type and the measurement method on the magnitudes of the same variables. Twenty-three men were tested on the free CMJ and the CMJ constrained by a Smith machine. Maximum values of force, velocity, and power were recorded by a force plate and by a LVT attached to a bar loaded by 17, 30, 45, 60, and 75 kg...
February 24, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28631978/structural-and-predictive-properties-of-the-emotional-quotient-inventory-youth-version-short-form-eq-i-yv-s
#7
Sarah K Davis, Michael Wigelsworth
Emotional intelligence (EI) is a popular construct with concentrated areas of application in education and health contexts. There is a need for reliable and valid measurement of EI in young people, with brief yet sensitive measures of the construct preferable for use in time-limited settings. However, the proliferation of EI measures has often outpaced rigorous psychometric evaluation (Gignac, 2009 ). Using data from 849 adolescents (407 females, 422 males) aged 11 to 16 years (M age 13.4, SD = 1.2 years), this article systematically examines the structural and predictive properties of a frequently employed measure of adolescent trait EI-the Emotional Quotient Inventory Youth Version-Short Form (EQ-i:YV[S]); Bar-On & Parker, 2000 )...
March 2, 2017: Journal of Personality Assessment
https://www.readbyqxmd.com/read/28631882/tuning-surface-polarity-of-microporous-organic-polymers-for-co2-capture
#8
Qihua Yang, Jian Chen, He Li, MingMei Zhong
CO2 capture is very important for reducing CO2 concentration in atmosphere. Herein, we report the preparation of microporous polymers with tunable surface polarity for CO2 capture. -NH2, -SO3H and -SO3Li functionalized porous polymers have been successfully prepared by post-synthesis modification of microporous polymers (P-PhPh3 prepared with 1,3,5-triphenylbenzene as monomer and AlCl3 as catalyst) via chemical transformations such as nitration-reduction, sulfonation and cationic exchange. The CO2 adsorption selectivity (CO2/N2 and CO2/H2) and isosteric heats of the microporous polymers increase markedly after modification, P-PhPh3-NH2 and P-PhPh3-SO3Li afford higher CO2 uptake capacity than P-PhPh3 at pressure less than 0...
June 20, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28631035/brief-report-the-negev-hospital-university-based-hub-autism-database
#9
Gal Meiri, Ilan Dinstein, Analya Michaelowski, Hagit Flusser, Michal Ilan, Michal Faroy, Asif Bar-Sinai, Liora Manelis, Dana Stolowicz, Lili Lea Yosef, Nadav Davidovitch, Hava Golan, Shosh Arbelle, Idan Menashe
Elucidating the heterogeneous etiologies of autism will require investment in comprehensive longitudinal data acquisition from large community based cohorts. With this in mind, we have established a hospital-university-based (HUB) database of autism which incorporates prospective and retrospective data from a large and ethnically diverse population. The collected data includes social-demographic characteristics, standardized behavioral testing, detailed clinical history from electronic patient records, genetic samples, and various neurological measures...
June 19, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28630536/effects-of-filament-size-on-critical-current-density-in-overpressure-processed-bi-2212-round-wire
#10
Jianyi Jiang, Ashleigh Francis, Ryan Alicea, Maxime Matras, Fumitake Kametani, Ulf P Trociewitz, Eric E Hellstrom, David C Larbalestier
Bi2Sr2CaCu2Ox (Bi-2212) conductor is the only high temperature superconductor manufactured as a round wire and is a very promising conductor for very high field applications. One of the key design parameters of Bi-2212 wire is its filament size, which has been previously reported to affect the critical current density (Jc ) and ac losses. Work with 1 bar heat treatment showed that the optimal filament diameter was about 15 μm but it was not well understood at that time that gas bubbles were the main current limiting mechanism...
June 2017: IEEE Transactions on Applied Superconductivity: a Publication of the IEEE Superconductivity Committee
https://www.readbyqxmd.com/read/28630246/ominous-triad-triggered-by-high-dose-glucocorticosteroid-therapy
#11
Sarah Bär, Fritz Daudel, Thomas Zueger
Glucocorticosteroids (CS) play a key role in the treatment of numerous diseases. Nonetheless, they can be accompanied by several adverse effects. We present the case of a 51-year-old woman who was treated with high-dose CS for a relapse of her multiple sclerosis. After 5 days of treatment, the patient developed severe diabetic ketoacidosis, hypertriglyceridemia and acute pancreatitis-a potentially life-threatening triad which has previously been described, in our case, however, for the first time as a complication of CS therapy...
June 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28629829/morphological-variability-and-molecular-characterization-of-pomphorhynchus-zhoushanensis-sp-nov-acanthocephala-pomphorhynchidae-with-comments-on-the-systematic-status-of-pomphorhynchus-monticelli-1905
#12
Liang Li, Hui-Xia Chen, Omar M Amin, Yue Yang
Species of Pomphorhynchus Monticelli, 1905 commonly parasitize the digestive tract of freshwater fishes, and rarely occur in marine fishes and amphibians. In the present study, Pomphorhynchus zhoushanensis sp. nov., collected from the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel) (Perciformes: Oplegnathidae) in the East China Sea, was described using integrated approaches, including light and scanning electron microscopy, and the sequencing and analysing of ribosomal [small ribosomal DNA (18S) and internal transcribed spacer (ITS)] and mitochondrial [cytochrome c oxidase subunit 1 (cox1)] target regions...
June 16, 2017: Parasitology International
https://www.readbyqxmd.com/read/28628855/progress-in-programming-spatiotemporal-patterns-and-machine-assembly-in-cell-free-protein-expression-systems
#13
REVIEW
Alexandra M Tayar, Shirley S Daube, Roy H Bar-Ziv
Building biological systems outside the cell is an emerging interdisciplinary research field aimed to study design principles, and to emulate biological functions for technology. Reconstructing programmable cellular functions, from assembly of protein/nucleic-acid machines to spatially distributed systems, requires implementing minimal systems of molecular interactions encoded in genes, source-sink protein expression dynamics, and materials platforms for reaction-diffusion scenarios. Here, we first review how molecular turnover mechanisms, combined with nonlinear interactions and feedback in cell-free gene networks enable programmable dynamic expression patterns in various compartments...
June 16, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/28628793/the-reliability-concurrent-validity-and-association-with-salivary-oxytocin-of-the-self-report-version-of-the-inventory-of-callous-unemotional-traits-in-adolescents-with-conduct-disorder
#14
Tomer Levy, Alan Apter, Amir Djalovski, Miriam Peskin, Silvana Fennig, Galia Gat-Yablonski, Meytal Bar-Maisels, Katy Borodkin, Yuval Bloch
The present study evaluated the self-report version of the Inventory of Callous-Unemotional Traits (ICU-SR) in terms of reliability, concurrent validity, and correlation with salivary oxytocin levels, a potential biomarker of CU traits. 67 socially at-risk male adolescents (mean 16.2 years) completed the ICU-SR, ICU teacher-version (ICU-TR), Strengths and Difficulties Questionnaire, and their medical files were coded for previous antisocial acts using Brown-Goodwin Lifetime Aggression Scale. Salivary samples were assayed for oxytocin...
June 12, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28628612/novel-interplay-between-jnk-and-egfr-signaling-in-drosophila-dorsal-closure
#15
Tatyana Kushnir, Sharon Mezuman, Shaked Bar-Cohen, Rotem Lange, Ze'ev Paroush, Aharon Helman
Dorsal closure (DC) is a developmental process in which two contralateral epithelial sheets migrate to seal a large hole in the dorsal ectoderm of the Drosophila embryo. Two signaling pathways act sequentially to orchestrate this dynamic morphogenetic process. First, c-Jun N-terminal kinase (JNK) signaling activity in the dorsal-most leading edge (LE) cells of the epidermis induces expression of decapentaplegic (dpp). Second, Dpp, a secreted TGF-β homolog, triggers cell shape changes in the adjacent, ventrally located lateral epidermis, that guide the morphogenetic movements and cell migration mandatory for DC...
June 19, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28628356/clips-versus-resilient-liners-used-with-bilateral-posterior-prefabricated-bars-for-retaining-four-implant-supported-mandibular-overdentures
#16
Mona Gibreel, Mohammed Fouad, Fatma El-Waseef, Nesma El-Amier, Hamdy Marzook
The objective of this research was to clinically compare peri-implant tissue health of bar-clips versus silicone-resilient liners used with bilateral posterior bars for retaining four implant supported mandibular overdentures. Thirty completely edentulous male patients (mean age 65) were randomly assigned into two equal groups. Each patient received four implants in canine and first molar regions of the mandible using flapless surgical technique. Mandibular overdentures were immediately connected to the implants with bilateral prefabricated instant adjusting bars...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28628350/custom-cast-ball-attachments-used-on-outdated-implants-to-restore-a-maxillary-implant-supported-overdenture
#17
Andressa Rosa Perin Leite, Danny Omar Mendoza Marin, Gabriela Giro, Ana Carolina Pero, Ligia Antunes Pereira Pinelli, JoséMauriciodos Santos Reis
The lack of compatible prosthetic components can be a complication during oral rehabilitations using outdated implants. The aim of the present clinical report was to describe an alternative technique for the fabrication of a maxillary implant-supported overdenture in a patient with 20-year-old dental implants using castable spherical patterns and ball-attachments. The patient had been wearing a relined bar/clip overdenture in the mandible on four external-hexagon dental implants and a relined complete denture in the maxilla on four internal-hexagon implants due to abutment screw fracture inside of the implants, losing the attachment system...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28628316/soft-sphere-continuum-solvation-in-electronic-structure-calculations
#18
Giuseppe Fisicaro, Luigi Genovese, Oliviero Andreussi, Sagarmoy Mandal, Nisanth N Nair, Nicola Marzari, Stefan Goedecker
We present an implicit solvation approach where the interface between the quantum-mechanical solute and the surrounding environment is described by a fully continuous permittivity built up with atomic-centered ``soft'' spheres. This approach combines many of the advantages of the self-consistent continuum solvation model in handling solutes and surfaces in contact with complex dielectric environments or electrolytes in electronic-structure calculations. In addition it is able to describe accurately both neutral and charged systems...
June 19, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28627766/recent-applications-of-metal-organic-frameworks-in-sample-pretreatment
#19
Yonghua Wang, Min Rui, Guanghua Lu
Metal-organic frameworks are promising materials in diverse analytical applications especially in sample pretreatment by virtue of their diverse structure topology, tunable pore size, permanent nanoscale porosity, high surface area and good thermostability. According to hydrostability, metal-organic frameworks are divided into moisture-sensitive and water-stable types. In the actual application, both kinds of metal organic frameworks are usually engineered into hybrid composites containing magnetite, silicon dioxide, graphene or directly carbonized to metal-organic-frameworks-derived carbon...
June 19, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28627564/methanol-methanol-and-methanol-water-systems-the-intermolecular-interactions-controlling-the-transition-from-small-clusters-to-the-liquid-phase
#20
Margarita Albertí, Anna Amat, Antonio Aguilar, Fernando Pirani
The present paper focuses on the characterization of the properties of methanol and water molecules in gas and liquid environments. A force field for methanol-methanol and methanol-water interactions, useful to be applied in Molecular Dynamics (MD) simulations, is proposed. The electrostatic interaction contributions, arising from permanent charge and/or from anisotropic charge distributions originating from permanent electric multipoles (Vel), different in gas and in liquid phases, are combined with the non electrostatic ones (Vnel), defined by means of Improved Lennard-Jones (ILJ) functions [F...
June 19, 2017: Physical Chemistry Chemical Physics: PCCP
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