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21st Norman Salzman Symposium
Date: Monday, 11 18, 2019; Speaker: Barton Haynes, M.D., Frederic M. Hanes Professor of Medicine and Immunology, Duke University School of Medicine; Carolyn Coyne, Ph.D., Professor of Pediatrics, University of Pittsburgh; Matthias Gromeier, M.D., Professor of Neurosurgery, Duke University School of Medicine; Adam Zlotnick, Ph.D., Professor of Molecular and Cellular Biochemistry, Indiana University; Malcolm Martin, M.D., Chief, Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases; Lipsett Auditorium of the Clinical Center
Source: NIH Calendar of Events - June 24, 2019 Category: American Health Source Type: events

Reproductive health care for incarcerated women: Strategies for promoting justice through research within an overlooked population
Date: Tuesday, 07 16, 2019; Speaker: Carolyn Sufrin, M.D., Ph.D., Assistant Professor, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine; https://orwh.od.nih.gov/about/newsroom/events/; Videocast Event
Source: NIH Calendar of Events - June 24, 2019 Category: American Health Source Type: events

Understanding Mechanisms of HIV Persistence During Antiretroviral Therapy (ART)
Date: Wednesday, 07 17, 2019; Speaker: Mary Kearney, PhD, Head, Translational Research Unite, HIV Dynamics and Replication Program, Center, National Cancer Institute; https://bit.ly/2RyT8Kw
Source: NIH Calendar of Events - June 24, 2019 Category: American Health Source Type: events

Telemedicine for Allergy Services to Rural Communities
Publication date: Available online 22 June 2019Source: The Journal of Allergy and Clinical Immunology: In PracticeAuthor(s): Luisa Taylor, Morgan Waller, Jay PortnoyAbstractTelemedicine (TM) involves the use of technology to provide medical services to patients who live at a distance. It can be used asynchronously for interpretation of tests (spirometry, skin tests imaging studies), and for communication of information when the simultaneous presence of provider and patient is unnecessary. Synchronous encounters can be either unscheduled and initiated on-demand by patients or they can be facilitated substitutes for in-perso...
Source: The Journal of Allergy and Clinical Immunology: In Practice - June 24, 2019 Category: Allergy & Immunology Source Type: research

Development of the Hereditary Angioedema Rapid Triage (HAE-RT) Tool
ConclusionExpert consensus led to the identification and prioritization of variables that when incorporated into an HAE-RT tool, were associated with a high level of sensitivity and specificity when applied to known patients.
Source: The Journal of Allergy and Clinical Immunology: In Practice - June 24, 2019 Category: Allergy & Immunology Source Type: research

Multiple Drug Hypersensitivity syndrome in a large database
ConclusionOur data support the concept of MDH as a distinct and rare subgroup of DH. The prevalence in our database was 2.5% in the total DH alleged patient population and 0.5% of the demonstrated DH. Skin testing and DPT are mandatory for confirming the diagnosis.
Source: The Journal of Allergy and Clinical Immunology: In Practice - June 24, 2019 Category: Allergy & Immunology Source Type: research

Abatacept as a Long-Term Targeted Therapy for LRBA Deficiency
ConclusionLong-term Abatacept therapy is effective in the majority of patients with LRBA deficiency.
Source: The Journal of Allergy and Clinical Immunology: In Practice - June 24, 2019 Category: Allergy & Immunology Source Type: research

Interleukin-37 sensitize the elderly type 2 diabetic patients to insulin therapy through suppressing the gut microbiota dysbiosis
ConclusionThus our results showed that higher IL-37 was associated with increased insulin sensitive in elderly type 2 DM patients through suppressing the gut microbiota dysbiosis.
Source: Molecular Immunology - June 24, 2019 Category: Allergy & Immunology Source Type: research

Community Mobility Design Challenge Planning Grants
Planning grants to support communities seeking innovative ways to address the particular mobility challenges experienced by low-income community members for whom a lack of transportation is an obstacle to the pursuit of economic, health, and social well being. Geographic coverage: Nationwide -- Community Transportation Association of America, Federal Transit Administration, National Center for Mobility Management
Source: Funding opportunities via the Rural Health Information Hub - June 24, 2019 Category: American Health Source Type: funding

A Boy Who Had Spinal Surgery in the Womb Stands on His Own Two Feet
Operating before birth can minimize nerve damage caused by severe defects in tissue around the spinal column.
Source: NYT - June 24, 2019 Category: American Health Authors: Denise Grady Tags: Pregnancy and Childbirth Paralysis Birth Defects Spina Bifida Disabilities Spine (Body Part) Fetal surgery Texas Children ' s Hospital your-feed-healthcare Source Type: news

Analyzing road crash frequencies with uncorrelated and correlated random-parameters count models: An empirical assessment of multilane highways
Publication date: Available online 22 June 2019Source: Analytic Methods in Accident ResearchAuthor(s): Tariq Usman Saeed, Thomas Hall, Hiba Baroud, Matthew J. VolovskiAbstractRecent literature on highway safety research has focused on methodological advances to minimize misspecifications and the potential for erroneous estimates and invalid statistical inferences. To further these efforts, this study carries out an empirical assessment of uncorrelated and correlated random-parameters count models for analyzing road crash frequencies on multilane highways considering two crash severities; injury and no-injury. The empirical...
Source: Analytic Methods in Accident Research - June 24, 2019 Category: Accident Prevention Source Type: research

The effects of reading mode and braille reading patterns on braille reading speed and comprehension: A study of students with visual impairments in China
Publication date: August 2019Source: Research in Developmental Disabilities, Volume 91Author(s): Xiaomeng Chen, Lelin Liang, Minghui Lu, Miloň Potměšil, Jingxun ZhongAbstractThe purpose of this study was to examine the effects of reading mode (oral and silent reading) and braille reading patterns (one-handed pattern, mark pattern, parallel pattern, cooperative pattern) on the reading speed and comprehension of students with visual impairments in China. Seventy-three students with visual impairments aged 10–19 years participated in the study; 48 were students with congenital visual impairments and 25 were students with...
Source: Research in Developmental Disabilities - June 24, 2019 Category: Disability Source Type: research

Blue Cross, North Memorial launch joint venture to share ownership of clinics
Blue Cross and Blue Shield of Minnesota and North Memorial Health have launched a joint venture company that splits ownership of North Memorial's 20 primary and specialty care clinics in the Twin Cities between the two organizations, an action that echoes the growing affinity between payers and providers across the country. Eagan-based Blue Cross and Robbinsdale-based North Memorial announced the new venture Monday. As part of the agreement, North Memorial will own 51 percent of the new company,…
Source: bizjournals.com Health Care:Physician Practices headlines - June 24, 2019 Category: American Health Authors: Alex Wittenberg Source Type: news

A New Trump Order May Make More Health Care Prices Public
Hospitals and insurance companies will fight the order, which could reveal their secret negotiations.
Source: NYT - June 24, 2019 Category: American Health Tags: Health Insurance and Managed Care Prices (Fares, Fees and Rates) Executive Orders and Memorandums Health and Human Services Department Trump, Donald J Azar, Alex M II Source Type: news

Bartell Drugs partnership allows for prescription medication delivery in Seattle
Bartell hopes to expand to seven locations by the fall, and 128-year-old drugstore has gotten positive feedback from its early users.
Source: bizjournals.com Health Care:Physician Practices headlines - June 24, 2019 Category: American Health Authors: Megan Campbell Source Type: news

Unconventional gate voltage dependence of the charge conductance caused by spin-splitting Fermi surface by Rashba-type spin-orbit coupling
Publication date: Available online 24 June 2019Source: Physica E: Low-dimensional Systems and NanostructuresAuthor(s): Daisuke Oshima, Katsuhisa Taguchi, Yukio TanakaAbstractWe calculate the gate voltage (Vg) dependence of charge conductance in a normal metal (NM)/two dimensional electron gas (2DEG) junction, where Rashba spin-orbit coupling and ferromagnetism exist in the 2DEG. We call this 2DEG as the ferromagnetic Rashba metal (FRM) and the chemical potential of the FRM is controlled by Vg. We clarify the physical origin of the unconventional Vg dependence of charge conductance in the NM/FRM junction found in our previo...
Source: Physica E: Low dimensional Systems and Nanostructures - June 24, 2019 Category: Nanotechnology Source Type: research

Graphene transport in a parallel magnetic field: Spin polarization effects at finite temperature
We present an analysis of the temperature and magnetic field dependence of the total electron conductivity in monolayer graphene systems due to screening effects around charged impurities. The evaluation of the two spin channels polarization functions and screening coefficients is based on the random phase approximation (RPA). The total electron conductivity due to both spin-up and spin-down electrons decreases as function of temperature in the low temperature regime, presents a minimum in the intermediate temperature regime, and increases linearly with temperature in the high temperature regime. As function of magnetic fi...
Source: Physica E: Low dimensional Systems and Nanostructures - June 24, 2019 Category: Nanotechnology Source Type: research

Symmetry of rigid-layer modes: Raman and infrared activity
Publication date: Available online 23 June 2019Source: Physica E: Low-dimensional Systems and NanostructuresAuthor(s): Zoran P. Popović, Božidar Nikolić, Ivanka Milošević, Milan DamnjanovićAbstractSymmetry of multilayer structures is analyzed in order to count and specify Raman and infrared active rigid-layer vibrational modes. Effective Hessian matrix of rigid-layer dynamics corresponds to simple model of linear chain (composed of monolayers); its symmetry, derived from the symmetry of the multilayer, assigns the modes and determines their activity. These general results are illustrated on currently most studied (mu...
Source: Physica E: Low dimensional Systems and Nanostructures - June 24, 2019 Category: Nanotechnology Source Type: research

Spectroscopic, dielectric properties and phase transition of Bis (diethylammonium) hexachlorido stannate(IV)
Publication date: Available online 23 June 2019Source: Physica E: Low-dimensional Systems and NanostructuresAuthor(s): Sahel Karoui, Hassen Chouaib, Slaheddine KamounAbstractThe [C4H10NH2]2SnCl6 compound is characterized by using the X-ray powder analysis, thermogravimetric analysis, differential scanning calorimetry analysis, 13C and 119Sn (CP/MAS NMR) analysis, vibrational spectroscopy and complex impedance spectroscopic data. The results show that this compound exhibits a phase transition at 326 K which was characterized by differential scanning calorimetry (DSC), X-rays powder diffraction, Raman spectroscopy and diel...
Source: Physica E: Low dimensional Systems and Nanostructures - June 24, 2019 Category: Nanotechnology Source Type: research

Structural and electronic properties of monolayer group III-VII compounds: A first-principle study
Publication date: Available online 23 June 2019Source: Physica E: Low-dimensional Systems and NanostructuresAuthor(s): Heng-Fu Lin, Shu-Shen Wang, Hui-Ying Liu, Ting-Ping Hou, Kai-Ming WuAbstractRecently, single-layer group IV-VI compounds, which are isoelectronic counterparts to layered group V semiconductor, have attracted great interest for their tunable mechanical, electronic, and optoelectronic properties. Herein, by using atomic transmutation and first-principles calculations, we report a systematical study of monolayer group III-VII MX (M = Al, Ga, In, and X = Cl, Br, I) compounds. Three structural symmetrie...
Source: Physica E: Low dimensional Systems and Nanostructures - June 24, 2019 Category: Nanotechnology Source Type: research

Electric field-induced anisotropic Rashba splitting in two dimensional tungsten dichalcogenides WX2 (X: S, Se, Te): A first-principles study
Publication date: Available online 23 June 2019Source: Physica E: Low-dimensional Systems and NanostructuresAuthor(s): Yusuf Affandi, Moh Adhib Ulil AbsorAbstractTungsten dichalcogenides WX2 (X: S, Se, Te) monolayer (ML) has been considered as important two-dimensional materials for hosting large spin splitting due to the lack of inversion symmetry. However, out-of-plane mirror-symmetry in the WX2 ML suppressed that only out-of-plane Zeeman splitting sustains, thus limiting the functionality for spintronic applications. By using first-principles density-functional theory calculations, we show that application of an externa...
Source: Physica E: Low dimensional Systems and Nanostructures - June 24, 2019 Category: Nanotechnology Source Type: research

Multifaceted NIR-responsive polymer-peptide-enveloped drug-loaded copper sulfide Nanoplatform for chemo-phototherapy against highly tumorigenic prostate Cancer
In this study, we constructed a dual function nanosystem, copper sulfide nanoplatform loaded with the chemotherapeutic drug docetaxel wrapped by a conjugated polymer-peptide for targeted chemo-phototherapy. The nanoconstruct has been successfully designed with a size of 186.1 ± 5.2 nm, a polydispersity index of 0.18 ± 0.01, and zeta potential of −16.4 ± 0.1 mV. The enhanced uptake and near-infrared-responsive behavior of the nanosystem resulted in efficient drug release, photothermal ablation, effective cytotoxic activity, and potentiated reactive oxygen species generation. The ...
Source: Nanomedicine: Nanotechnology, Biology and Medicine - June 24, 2019 Category: Nanotechnology Source Type: research

A continuum damage mechanics framework for modeling the effect of crystalline anisotropy on rolling contact fatigue
Publication date: Available online 23 June 2019Source: Tribology InternationalAuthor(s): Akhil Vijay, Farshid SadeghiAbstractRolling contact fatigue (RCF) is the primary mode of fatigue failure in well-lubricated rolling element bearings. Typical fatigue failures in bearings are characterized by microcrack formation (initiation phase), which then coalesce to a large crack that grows to the surface (propagation phase). Hence, RCF is a micromechanical phenomenon driven by microstructural inhomogeneity. This paper presents a coupled damage mechanics - cohesive element method (DM-CEM) to model crack initiation and propagation ...
Source: Tribology International - June 24, 2019 Category: Materials Science Source Type: research

Organometallic Cerium Oxide Nanostructures acted as Nanofertilizer during Callogenesis and Organogenesis of Recalcitrant Plant Berberis lycium Royle
We report organometallic cerium oxide nanostructures (OM-CeO2-NS) mediated in vitro callus induction and direct shoot regeneration of medicinally important and recalcitrant plant (Berberis lycium Royle). To achieve greater biocompatibility, Hypericum scabrum flower extract was used during the green synthesis process. Ultra-performance Liquid Chromatography-Diode Array Detector (UPLC-DAD) coupled with Mass spectrometry (MS) was employed to detect the potential secondary metabolites in H. scabrum flower extract which acted as reducing as well as the surface stabilizing agents for tailoring the morphology of OM-CeO2-NS. High ...
Source: Materials Today Communications - June 24, 2019 Category: Materials Science Source Type: research

Silicon-compatible Mg2Si/Si n-p photodiodes with high room temperature infrared responsivity
Publication date: 1 November 2019Source: Materials Science in Semiconductor Processing, Volume 102Author(s): Ahmed A.M. El-Amir, Takeo Ohsawa, Satoshi Ishii, Masataka Imura, Meiyong Liao, Xiuwei Fu, Hiroyo Segawa, Isao Sakaguchi, Tadaaki Nagao, Kiyoshi Shimamura, Naoki OhashiAbstractFor the full benefit of the silicon chip industry and to further extend the photoresponse cut-off wavelength of the current Si photodetectors beyond 1100 nm, high-performance silicon-compatible Mg2Si/Si n-p photodiodes are constructed on the bulk silicon wafer by magnetron sputtering and post-annealing sequential processes. The results show t...
Source: Materials Science in Semiconductor Processing - June 24, 2019 Category: Materials Science Source Type: research

Magnetic iron oxide nanoparticles for disease detection and therapy
Publication date: Available online 22 June 2019Source: Materials TodayAuthor(s): Sheng Tong, Haibao Zhu, Gang BaoAbstractMagnetic iron oxide nanoparticles (MIONs) are among the first generation of nanomaterials that have advanced to clinic use. A broad range of biomedical techniques have been developed by combining the versatile nanomagnetism of MIONs with various forms of applied magnetic fields. MIONs can generate imaging contrast and provide mechanical/thermal energy in vivo in response to an external magnetic field, a special feature that distinguishes MIONs from other nanomaterials. These properties offer unique oppor...
Source: Materials Today - June 24, 2019 Category: Materials Science Source Type: research

Laser surface texturing of Ti-6Al-4V by nanosecond laser: Surface characterization, Ti-oxide layer analysis and its electrical insulation performance
Publication date: November 2019Source: Materials Science and Engineering: C, Volume 104Author(s): C.G. Moura, O. Carvalho, L.M.V. Gonçalves, M.F. Cerqueira, R. Nascimento, F. SilvaAbstractThe development of smart biomedical implants with intrinsic communication system between sensors and actuators, or between implant and patient, remains a challenge for scientific community. Titanium and its alloys, especially Ti6Al4V, are the most used materials in the implant's fabrication. The present work is concerned with implant internal communication printing process and presents a detailed study on titanium alloy (Ti6Al4V) surface...
Source: Materials Science and Engineering: C - June 24, 2019 Category: Materials Science Source Type: research

Localization of cells using magnetized patterned thin films
In this study, the nasopharyngeal carcinoma cell line was cultured in a superparamagnetic iron oxide nanoparticle aqueous solution with a concentration of 1 μg/mL by using magnetic labeling technology. The cells took up superparamagnetic nanoparticles through the endocytosis process, which caused the cells to become magnetic and manipulable by a magnetic field gradient. Each cell contained 5.266 × 106 superparamagnetic nanoparticles, as determined using the magnetophoresis method. A specific domain configuration and its related distribution of magnetic poles in a patterned thin film were obtained after applying a m...
Source: Materials Science and Engineering: C - June 24, 2019 Category: Materials Science Source Type: research

Construction of a NT-3 sustained-release system cross-linked with an acellular spinal cord scaffold and its effects on differentiation of cultured bone marrow mesenchymal stem cells
ConclusionAs a composite scaffold, an NT-3 sustained-release system cross-linked with an acellular spinal cord scaffold has potential applications for tissue engineering.Graphical abstract
Source: Materials Science and Engineering: C - June 24, 2019 Category: Materials Science Source Type: research

First-principle calculations of structural, electronic, optical and thermodynamical properties of fluorinated graphene
Publication date: July 2019Source: Materials Science and Engineering: B, Volume 246Author(s): V. Kumar, R. SantoshAbstractThe structural, electronic, optical and thermodynamical properties of three stable structures: chair (C-), boat (B-) and tricycle (T-) of fluorinated graphene (fluorographene) have been studied using first-principle density functional theory (DFT) calculations. The band structure and density of states (DOS) have been discussed. The values of 17 parameters have been studied for all three structures. The thermodynamical properties have been described in temperature range 5 K–1000 K. The optical prop...
Source: Materials Science and Engineering: B - June 24, 2019 Category: Materials Science Source Type: research

Asynchronous effect of N+Cr alloying on the monotonic and cyclic deformation behaviors of Hadfield steel
Publication date: 22 July 2019Source: Materials Science and Engineering: A, Volume 761Author(s): Chen Chen, Fucheng Zhang, Bo Lv, Hua Ma, Lin Wang, Hongwang Zhang, Wei ShenAbstractAlloying treatment has always been an effective way to improve the mechanical performance of Hadfield steel. In the present study, Hadfield steel was alloyed with N + Cr, named Mn12CrN steel. Its monotonic and cyclic deformation behaviors were comparatively studied with traditional Hadfield steel, named Mn12 steel. Results showed that the stress responses during monotonic and cyclic deformations were different for these two steels, presenting a...
Source: Materials Science and Engineering: A - June 24, 2019 Category: Materials Science Source Type: research

High-strength graphene network reinforced copper matrix composites achieved by architecture design and grain structure regulation
This study highlights the importance of architecture design in graphene reinforced metal matrix composites for actualizing their strengthening potential while retaining a balanced ductility.Graphical abstract
Source: Materials Science and Engineering: A - June 24, 2019 Category: Materials Science Source Type: research

Microstructural control of alloy 718 fabricated by electron beam melting with expanded processing window by adaptive offset method
Publication date: Available online 22 June 2019Source: Materials Science and Engineering: AAuthor(s): Xiao Ding, Yuichiro Koizumi, Kenta Aoyagi, Tadashi Kii, Nobuyuki Sasaki, Yuichiro Hayasaka, Kenta Yamanaka, Akihiko ChibaAbstractThis paper presents microstructures of Inconel 718 fabricated by electron beam melting (EBM), a powder bed fusion (PBF), additive manufacturing (AM) process, under various conditions with an extended range of electron beam power (P) and scanning speed (V). An adaptive offset method (AOM) was used to optimize the beam scanning line offset adaptively to fabricate blocks without macroscopic defects....
Source: Materials Science and Engineering: A - June 24, 2019 Category: Materials Science Source Type: research

Influence of vanadium doping on the structural and electric properties of Sr0.5Ca0.5Mn1–xVxO3–δ
Publication date: 15 October 2019Source: Materials Letters, Volume 253Author(s): Ekaterina I. Konstantinova, Ilia A. Leonidov, Alexey A. Markov, Victor L. KozhevnikovAbstractThe solid solution Sr0.5Ca0.5Mn1–xVxO3–δ (0 ≤ x ≤ 0.125) has been obtained via a citrate-nitrate synthesis route. Powder X-ray diffraction (XRD) data for x = 0, 0.025 and 0.05 reveal the formation of perovskite-type orthorhombic structure with Pbnm space group (SG). Further increase of the vanadium content results in the appearance of the tetragonal crystal structure (SG I4/mcm) so that the composition of x = 0.075 is formed by...
Source: Materials Letters - June 24, 2019 Category: Materials Science Source Type: research

Tunable sign of magnetoresistance in graphene foam – Ecoflex® composite for wearable magnetoelectronic devices
Publication date: 15 October 2019Source: Materials Letters, Volume 253Author(s): Rizwan Ur Rehman Sagar, Hafiz Imran Ahmad Qazi, Muhammad Husnain Zeb, Florian J. Stadler, Babar Shabbir, Xiaohao Wang, Min ZhangAbstractUsually, positive magnetoresistance (PMR) is observed in graphene foam (GF) under all temperature and magnetic field range. Herein, large negative magnetoresistance is observed under a temperature range 300–200 K which switches to PMR under a temperature range 200–5 K in graphene foam (GF)-Ecoflex® specimen. The GF-Ecoflex® shows NMR in highly crosslinked specimen, while lightly crosslinked shows PMR...
Source: Materials Letters - June 24, 2019 Category: Materials Science Source Type: research

Highly transparent and excellent electromagnetic interference shielding hybrid films composed of sliver-grid/(silver nanowires and reduced graphene oxide)
In this study, two polyethylene terephthalate (PET) substrates, one printed with a silver-grid and the other coated with silver nanowires and reduced graphene oxide (AgNWs/rGO), were prepared separately and hot-pressed together face-to-face to fabricate hybrid films composed of sliver-grid/(AgNWs/rGO). The rGO nanosheets act as bridges between silver nanowires and vice-versa which can facilitate fast transfer of electrons. The effects of grid-line spacing on the transparency and EMI shielding have been studied. It is found that the EMI shielding increases with decreasing the grid-lines spacing, however, resulting in decrea...
Source: Materials Letters - June 24, 2019 Category: Materials Science Source Type: research

TiO2 nanospheres/AgVO3 quantum dots composite with enhanced visible light photocatalytic antibacterial activity
Publication date: 15 October 2019Source: Materials Letters, Volume 253Author(s): Bingkun Liu, Xiaole Han, Lilong Mu, Jingtao Zhang, Hengzhen ShiAbstractTiO2 nanospheres/AgVO3 quantum dots composite was synthesized by a facile in situ ultrasonic reaction route and systematically characterized by XRD, XPS, FESEM, TEM, UV–DRS and PL. The results demonstrated that AgVO3 QDs were successfully anchored on the surface of TiO2 nanospheres. The TiO2/AgVO3 composite displayed a high and stable visible light photocatalytic inactivation activity toward E. coli, which mainly derived from the synergetic effect between TiO2 and AgVO3, ...
Source: Materials Letters - June 24, 2019 Category: Materials Science Source Type: research

Incorporation of g-C3N4/Ag dopant in TiO2 as electron transport layer for organic solar cells
Publication date: 15 October 2019Source: Materials Letters, Volume 253Author(s): Mohd Fairuz Soh, Mohamad Firdaus Mohamad Noh, Nurul Aida Mohamed, Javad Safaei, Nurul Nazli Rosli, Eng Liang Lim, Chi Chin Yap, Mohd Asri Mat TeridiAbstractGraphitic carbon nitride (g-C3N4) and silver (Ag) co-modified titanium (IV) oxide (TiO2) was developed and employed as electron transport layer (ETL) in organic solar cell (OSC) to improve electron extraction and transport. The morphological, optical and electrical properties of the ETL were investigated using X-ray diffraction, atomic force microscopy and photocurrent density-voltage measu...
Source: Materials Letters - June 24, 2019 Category: Materials Science Source Type: research

Electrochemically grown vertical CdTe nanowire arrays on a flexible/transparent substrate
Publication date: 15 October 2019Source: Materials Letters, Volume 253Author(s): Amarsingh Bhabu Kanagaraj, Prerna Chaturvedi, Hamad Al Yassi, Lina Orabi, Jong Eun Ryu, Jung-Rae Park, Daniel S. ChoiAbstractVertical cadmium telluride (CdTe) nanowires were grown on flexible/transparent substrates by sputtering ITO and aluminum thin films on Parylene substrates, anodizing aluminum to form porous alumina, followed by electrodeposition of CdTe nanowires from ITO seed layer. The pore size of anodized alumina was controlled by oxalic acid concentration and applied voltage. The composition of CdTe nanowires were tuned by adjusting...
Source: Materials Letters - June 24, 2019 Category: Materials Science Source Type: research

A hidden single-stage martensitic transformation from B2 parent phase to B19′ martensite phase in an aged Ni51Ti49 alloy
Publication date: 15 October 2019Source: Materials Letters, Volume 253Author(s): C.Y. Zeng, S. Cao, Y.Y. Li, Z.X Zhao, X.Y. Yao, X. Ma, X.P. ZhangAbstractThe aged Ni-rich NiTi shape memory alloys (SMAs) exhibit the multi-stage martensitic transformation (MMT), which has important influences on functional properties and practical applications of the NiTi SMAs. A hidden single-stage martensitic transformation from B2 parent phase to B19′ martensite phase is found in an aged Ni51Ti49 alloy, which happens concurrently with a commonly observed two-stage martensitic transformation B2–R–B19′ (R: martensite phase) and actu...
Source: Materials Letters - June 24, 2019 Category: Materials Science Source Type: research

Large-area ZnO/MoS2 heterostructure grown by pulsed laser deposition
Publication date: 15 October 2019Source: Materials Letters, Volume 253Author(s): Binbin Su, Haiping He, Zhizhen YeAbstractA simple and efficient method to grow continuous large-area ZnO/MoS2 heterostructures is demonstrated by pulsed laser deposition. The layer number of MoS2 films is controlled by the number of laser pulses. The MoS2 film acts as a closely lattice-matched buffer layer for the subsequent ZnO growth, which improves the structural and optical quality of the ZnO film. ZnO film and multilayer MoS2 forms a type-II heterostructure, and the band offsets between them are quantitatively determined.
Source: Materials Letters - June 24, 2019 Category: Materials Science Source Type: research

High performance of Co–P/NF electrocatalyst for oxygen evolution reaction
Publication date: 1 September 2019Source: Materials Chemistry and Physics, Volume 235Author(s): Zunhang Lv, Yue Zhang, Kaihang Wang, Tianpeng Yu, Xin Liu, Guixue Wang, Guangwen Xie, Luhua JiangAbstractOne of the main challenges for electrochemical water splitting is to develop low-cost and efficient oxygen evolution anode materials. In this work, the Co–P alloys as efficient electrocatalysts for oxygen evolution reaction in alkaline media have been successfully synthesized by using electroless plating under mild conditions. SEM, TEM and XRD characterization show that the amorphous Co–P/NF electrocatalysts have rough su...
Source: Materials Chemistry and Physics - June 24, 2019 Category: Materials Science Source Type: research

Components of the Co3Cr4(PO4)6–Cr(PO3)3 system and the compound CoCr2(P2O7)2 as new ceramic pigments
Publication date: 1 September 2019Source: Materials Chemistry and Physics, Volume 235Author(s): Jana Luxová, Kateřina Těšitelová, Veronika Podzemná, Petra Šulcová, Monika Bosacka, Anna Błońska-Tabero, Elżbieta FilipekAbstractThe compounds: Co3Cr4(PO4)6, Cr(PO3)3 and CoCr2(P2O7)2 were tested for possible application as ceramics and anticorrosive pigments. They were characterized by SEM analysis, determination of particle size distribution and thermal stability. All phosphates were thermally stable up to 1100 °C so they can be used for colouring of middle-temperature ceramic glazes. The gravimetrical determinat...
Source: Materials Chemistry and Physics - June 24, 2019 Category: Materials Science Source Type: research

A physics investigation for influence of carbon nanotube agglomeration on thermal properties of composites
Publication date: Available online 23 June 2019Source: Materials Chemistry and PhysicsAuthor(s): Jing Pan, Lichun BianAbstractIn the present study, a micromechanics model is developed to investigate the thermal properties of nanocomposites with agglomerated fibers. This paper mainly analyzes the influence of carbon nanotube (CNT) agglomeration on the thermal expansion coefficients and thermal conductivity of epoxy nanocomposites based on the micromechanical theory proposed. The agglomeration of CNTs in epoxy matrix is divided into two parts: the regions with high concentrations of CNTs; the regions with low concentrations ...
Source: Materials Chemistry and Physics - June 24, 2019 Category: Materials Science Source Type: research

Chemical solution deposition of magnetoelectric ZnO−La2CoMnO6 nanocomposite thin films using a single precursor solution
We report a chemical solution deposition method for fabricating magnetoelectric ZnO–La2CoMnO6 (LCMO) nanocomposite films on platinum coated silicon (Pt/Si) substrates. A single precursor coating solution containing all constituent cations (Zn2+, La3+, Co2+, and Mn2+) was prepared by dissolving acetate and nitrate raw materials in 2-metoxyethanol in the presence of monoethanolamine. Investigations of decomposition and crystallization behaviors of a dried powder prepared from the ZnO–LCMO precursor solution revealed that a crystalline phase of ZnO first appeared at a low temperature below 400 °C followed by crystallizat...
Source: Materials Chemistry and Physics - June 24, 2019 Category: Materials Science Source Type: research

Separation of vegetable oil compounds and solvent recovery using commercial organic solvent nanofiltration membranes
This study explores the separation of oil compounds such as triglycerides and free fatty acids as well as solvent recovery using a series of Evonik commercial membranes. Under a static testing condition, the permeance of Duramem 500 reduces severely from 1.02 to 0.06 LMH/bar with an increase in oil concentration while its rejection to glyceryl trilinoleate decreases slightly from 86 to 84.8% when the feed concentration increases from 5 to 50 wt%. The severe permeance decline arises from the high viscosity of the permeate and oil layers accumulated on the membrane surface. In contrast, the membrane is able to separate gly...
Source: Journal of Membrane Science - June 24, 2019 Category: Materials Science Source Type: research

Preparation of thin film composite nano-filtration membranes for brackish water softening based on the reaction between functionalized UF membranes and polyethyleneimine
Publication date: Available online 23 June 2019Source: Journal of Membrane ScienceAuthor(s): Farideh Zarei, Rozita M. Moattari, Saeid Rajabzadeh, Maryam Bagheri, Abolfazl Taghizadeh, Toraj Mohammadi, Hideto MatsuyamaAbstractA new method was developed to prepare a low-pressure nano-filtration membrane based on the membrane surface reaction (functionalized UF blend membrane) with polyethyleneimine (PEI) to fabricate thin film composite (TFC) membranes for water softening applications. The TFC selective layer was prepared by a reaction between the carboxyl functional groups of a carboxylated polyether sulfone (C-PES)/PES UF b...
Source: Journal of Membrane Science - June 24, 2019 Category: Materials Science Source Type: research

Large electrocaloric effect near room temperature in lead–free Bi0.5Na0.5TiO3-based ergodic relaxor observed by differential scanning calorimetry
Publication date: October 2019Source: Scripta Materialia, Volume 171Author(s): Qiumei Wei, Mankang Zhu, Mupeng Zheng, Yudong Hou, Junjie Li, Yang BaiAbstractHere, we show the large electrocaloric effect near room temperature in ergodic relaxor (Bi1/2Na1/2)0.93Ba0.07(Zn1/3Nb2/3)0.01Ti0.99O3 (BNBZN) observed by a modified differential scanning calorimeter. Microstructure analysis revealed that BNBZN sample demonstrates global pseudocubic structure with locally distorted structures. Electric measurements showed that the sample coexists of two types of polar nanoregions (PNRs) with different coupling ability, and behaves as er...
Source: Scripta Materialia - June 24, 2019 Category: Materials Science Source Type: research

Stishovite formation at very low pressures in soda-lime glass
Publication date: October 2019Source: Scripta Materialia, Volume 171Author(s): Marta Pozuelo, Joseph Lefebvre, Pratyush Srivastava, Vijay GuptaAbstractWe show for the first time that amorphous soda-lime glass undergoes polymorphic transformation to its densest crystalline stishovite phase at only ~5 GPa of pressure and room temperature, by uniaxially compressing the soda-lime glass nanopillars of 500 nm diameter and observing the post-deformed pillars under transmission electron microscopy. This contrasts with the recent shock-compression experiments of amorphous fused silica glass plates which report a pressure thresh...
Source: Scripta Materialia - June 24, 2019 Category: Materials Science Source Type: research

Why Transparency on Medical Prices Could Actually Make Them Go Higher
It could depend on how much the health care system resembles the Danish concrete market.
Source: NYT - June 24, 2019 Category: American Health Authors: Margot Sanger-Katz Tags: Prices (Fares, Fees and Rates) Health Insurance and Managed Care United States Economy Hospitals Concrete Source Type: news