keyword
MENU ▼
Read by QxMD icon Read
search

Platform switching

keyword
https://www.readbyqxmd.com/read/28106037/a-robust-and-tuneable-mid-infrared-optical-switch-enabled-by-bulk-dirac-fermions
#1
Chunhui Zhu, Fengqiu Wang, Yafei Meng, Xiang Yuan, Faxian Xiu, Hongyu Luo, Yazhou Wang, Jianfeng Li, Xinjie Lv, Liang He, Yongbing Xu, Junfeng Liu, Chao Zhang, Yi Shi, Rong Zhang, Shining Zhu
Pulsed lasers operating in the mid-infrared (3-20 μm) are important for a wide range of applications in sensing, spectroscopy, imaging and communications. Despite recent advances with mid-infrared gain platforms, the lack of a capable pulse generation mechanism remains a significant technological challenge. Here we show that bulk Dirac fermions in molecular beam epitaxy grown crystalline Cd3As2, a three-dimensional topological Dirac semimetal, constitutes an exceptional ultrafast optical switching mechanism for the mid-infrared...
January 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28105837/hrp-mimicking-dnazyme-catalyzed-in-situ-generation-of-polyaniline-to-assist-signal-amplification-for-ultrasensitive-surface-plasmon-resonance-biosensing
#2
Haiyin Li, Jiafu Chang, Ting Hou, Feng Li
It is well-known that the horseradish peroxidase- (HRP-) mimicking DNAzyme, namely, hemin/G-quadruplex, can effectively catalyze the polymerization of aniline to form DNA-guided polyaniline. Meanwhile, polyaniline exhibits extraordinary electrical, electrochemical, and redox properties, as well as excellent SPR signal-enhancing ability. Herein, we report a novel ultrasensitive surface plasmon resonance (SPR) biosensor based on HRP-mimicking DNAzyme-catalyzed in situ formation of polyaniline for signal amplification, using bleomycin (BLM) as the proof-of-concept analyte...
January 3, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28095526/effects-of-platform-switching-on-peri-implant-soft-and-hard-tissue-outcomes-a-systematic-review-and-meta-analysis
#3
Yung-Ting Hsu, Guo-Hao Lin, Hom-Lay Wang
PURPOSE: This systematic review and meta-analysis was aimed at evaluating the longitudinal effect of platform switching on implant survival rates as well as on soft and hard tissue outcomes. MATERIALS AND METHODS: An electronic search of the databases of the National Center for Biotechnology Information, PubMed, Ovid (MEDLINE), EMBASE, Web of Science, and Cochrane Collaboration Library was conducted in February 2015. Studies published in English with at least 10 human participants and a 12-month post-loading follow-up were included...
January 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28094286/creating-stable-floquet-weyl-semimetals-by-laser-driving-of-3d-dirac-materials
#4
Hannes Hübener, Michael A Sentef, Umberto De Giovannini, Alexander F Kemper, Angel Rubio
Tuning and stabilizing topological states, such as Weyl semimetals, Dirac semimetals or topological insulators, is emerging as one of the major topics in materials science. Periodic driving of many-body systems offers a platform to design Floquet states of matter with tunable electronic properties on ultrafast timescales. Here we show by first principles calculations how femtosecond laser pulses with circularly polarized light can be used to switch between Weyl semimetal, Dirac semimetal and topological insulator states in a prototypical three-dimensional (3D) Dirac material, Na3Bi...
January 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28075347/sdtcp-towards-datacenter-tcp-congestion-control-with-sdn-for-iot-applications
#5
Yifei Lu, Zhen Ling, Shuhong Zhu, Ling Tang
The Internet of Things (IoT) has gained popularity in recent years. Today's IoT applications are now increasingly deployed in cloud platforms to perform Big Data analytics. In cloud data center networks (DCN), TCP incast usually happens when multiple senders simultaneously communicate with a single receiver. However, when TCP incast happens, DCN may suffer from both throughput collapse for TCP burst flows and temporary starvation for TCP background flows. In this paper, we propose a software defined network (SDN)-based TCP congestion control mechanism, referred to as SDTCP, to leverage the features, e...
January 8, 2017: Sensors
https://www.readbyqxmd.com/read/28072999/-features-and-advances-of-morse-taper-connection-in-oral-implant
#6
C L Tang, S K Zhao, C Huang
Dental implants have been widely accepted as a predictable and reliable tool for dental reconstruction with the development of the economy. The design of implant-abutment connections has influence on mechanical properties and biological characteristics of implants. There are two types of implant-abutment connections, the external and the internal connections. Morse taper connection is one of the internal connections and its conical shape creates significant friction via the high propensity of parallelism between the two structures within the joint space...
January 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28071918/stereoelectronic-effect-induced-conductance-switching-in-aromatic-chain-single-molecule-junctions
#7
Na Xin, Jinying Wang, Chuancheng Jia, Zitong Liu, Xisha Zhang, Chenmin Yu, Mingliang Li, Shuopei Wang, Yao Gong, Hantao Sun, Guanxin Zhang, Zhirong Liu, Guangyu Zhang, Jianhui Liao, Deqing Zhang, Xuefeng Guo
Biphenyl, as the elementary unit of organic functional materials, has been widely used in electronic and optoelectronic devices. However, over decades little has been fundamentally understood regarding how the intramolecular conformation of biphenyl dynamically affects its transport properties at the single-molecule level. Here, we establish the stereoelectronic effect of biphenyl on its electrical conductance based on the platform of graphene-molecule single-molecule junctions, where a specifically designed hexaphenyl aromatic chain molecule is covalently sandwiched between nanogapped graphene point contacts to create stable single-molecule junctions...
January 12, 2017: Nano Letters
https://www.readbyqxmd.com/read/28071051/supramolecular-platform-with-switchable-multivalent-affinity-photo-reversible-capture-and-release-of-bacteria
#8
Wenjun Zhan, Ting Wei, Limin Cao, Changming Hu, Yangcui Qu, Qian Yu, Hong Chen
Surfaces having dynamic control of interactions at the biological system-material interface are of great scientific and technological interest. In this work, a supramolecular platform with switchable multivalent affinity was developed to efficiently capture bacteria and on-demand release captured bacteria in response to irradiation with light of different wavelengths. The system consists of a photo-responsive self-assembled monolayer containing azobenzene (Azo) groups as guest and β-cyclodextrin (β-CD)-mannose (CD-M) conjugates as host, with each CD-M containing seven mannose units to display localized multivalent carbohydrates...
January 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28070657/-how-to-incorporate-dual-energy-imaging-into-a-high-volume-abdominal-imaging-practice
#9
Eric P Tamm, Ott Le, Xinming Liu, Rick R Layman, Dianna D Cody, Priya R Bhosale
Dual-energy CT imaging has many potential uses in abdominal imaging. It also has unique requirements for protocol creation depending on the dual-energy scanning technique that is being utilized. It also generates several new types of images which can increase the complexity of image creation and image interpretation. The purpose of this article is to review, for rapid switching and dual-source dual-energy platforms, methods for creating dual-energy protocols, different approaches for efficiently creating dual-energy images, and an approach to navigating and using dual-energy images at the reading station all using the example of a pancreatic multiphasic protocol...
January 9, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28062801/wire-escalation-in-emergent-revascularization-procedures-of-internal-carotid-artery-occlusions-the-use-of-high-tip-stiffness-microguidewires
#10
José E Cohen, Ronen R Leker, John M Gomori, Eyal Itshayek
OBJECTIVE: We examined the usefulness and safety of high tip stiffness cardiac microguidewires in the endovascular revascularization of selected cases of internal carotid artery (ICA) occlusion. METHODS: Files of patients with acute ischemic symptoms due to ICA occlusions managed from August 2010 to August 2016 by urgent endovascular revascularization were retrospectively reviewed with a waiver of informed consent. Cases where there was escalation to stiff tipped cardiovascular microguidewires after at least two failed attempts to cross the carotid occlusion with standard neuro-microguidewires were included...
January 6, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28059362/stable-controlling-of-electromagnetically-induced-transparency-like-in-a-single-quasi-cylindrical-microresonator
#11
Xueying Jin, Yongchao Dong, Keyi Wang
We experimentally and theoretically demonstrate electromagnetically induced transparency (EIT)-like and Fano resonance in a single quasi-cylindrical microresonator (QCMR). Stable controlling of the EIT and Fano resonance lineshapes can be achieved by vertically moving the resonator along its axis while in touch with the tapered fiber. Moreover, by horizontally scanning the coupling point along the tapered fiber, asymmetric Fano resonances of the transmission spectra are observed and can be engineered to vary periodically...
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28053117/gb3-0-a-platform-for-plant-bio-design-that-connects-functional-dna-elements-with-associated-biological-data
#12
Marta Vazquez-Vilar, Alfredo Quijano-Rubio, Asun Fernandez-Del-Carmen, Alejandro Sarrion-Perdigones, Rocio Ochoa-Fernandez, Peio Ziarsolo, José Blanca, Antonio Granell, Diego Orzaez
Modular DNA assembly simplifies multigene engineering in Plant Synthetic Biology. Furthermore, the recent adoption of a common syntax to facilitate the exchange of plant DNA parts (phytobricks) is a promising strategy to speed up genetic engineering. Following this lead, here, we present a platform for plant biodesign that incorporates functional descriptions of phytobricks obtained under pre-defined experimental conditions, and systematically registers the resulting information as metadata for documentation...
January 3, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28046133/whole-genome-sequencing-of-39-invasive-streptococcus-pneumoniae-sequence-type-199-isolates-revealed-switches-from-serotype-19a-to-15b
#13
Oliwia Makarewicz, Marie Lucas, Christian Brandt, Leonie Herrmann, Andreas Albersmeier, Christian Rückert, Jochen Blom, Alexander Goesmann, Mark van der Linden, Jörn Kalinowski, Mathias W Pletz
Streptococcus pneumoniae is a major pathogen that causes different invasive pneumococcal diseases (IPD). The pneumococcal polysaccharide capsule is a main virulence factor. More than 94 capsule types have been described, but only a limited number of capsule types accounted for the majority of IPD cases before the introduction of pneumococcal vaccines. After the introduction of the conjugated pneumococcal vaccine PCV7, which covered the seven most frequent serotypes in IPD in the USA, an increase in IPD caused by non-vaccine serotypes was observed, and serotype 19A, which belongs to sequence type (ST) 199, was among the most prevalent STs...
2017: PloS One
https://www.readbyqxmd.com/read/28042440/immediate-vs-non-immediate-loading-post-extractive-implants-a-comparative-study-of-implant-stability-quotient-isq
#14
L Milillo, C Fiandaca, F Giannoulis, L Ottria, A Lucchese, F Silvestre, M Petruzzi
PURPOSE: This study aims to evaluate differences in implant stability between post-extractive implants vs immediately placed post-extractive implants by resonance frequency analysis (RFA). MATERIALS AND METHODS: Patients were grouped into two different categories. In Group A 10 patients had an immediate post-extractive implant, then a provisional, acrylic resin crown was placed (immediate loading). In Group B (control group) 10 patients only had an immediate post-extractive implant...
July 2016: Oral & Implantology
https://www.readbyqxmd.com/read/28033467/multifunctional-metal-organic-framework-nanoprobe-for-cathepsin-b-activated-cancer-cell-imaging-and-chemo-photodynamic-therapy
#15
Jintong Liu, Lei Zhang, Jianping Lei, Hong Shen, Huangxian Ju
Integration of a photodynamic therapy platform with a drug-delivery system in a porous structure is an urgent challenge for enhanced anticancer therapy. Here, an amino-functionalized metal-organic framework (MOF), which is useful as efficient delivery vehicle for drugs and provides the -NH2 group for postsynthetic modification, is chosen and well-designed for cell imaging and chemo-photodynamic therapy. The multifunctional MOF nanoprobe was first assembled with camptothecine drug via noncovalent encapsulation and then bound with folic acid as the targeted element and chlorine e6 (Ce6)-labeled CaB substrate peptide as the recognition moiety and signal switch...
January 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28032621/combining-magnetic-particle-imaging-and-magnetic-fluid-hyperthermia-in-a-theranostic-platform
#16
Daniel W Hensley, Zhi Wei Tay, Rohan Dhavalikar, Bo Zheng, Patrick Goodwill, Carlos Rinaldi, Steven Conolly
Magnetic particle imaging (MPI) is a rapidly developing molecular and cellular imaging modality. Magnetic fluid hyperthermia (MFH) is a promising therapeutic approach where magnetic nanoparticles are used as a conduit for targeted energy deposition, such as in hyperthermia induction and drug delivery. The physics germane to and exploited by MPI and MFH are similar, and the same particles can be used effectively for both. Consequently, the method of signal localization by using gradient fields in MPI can also be used to spatially localize MFH, allowing for spatially selective heating deep in the body and generally providing greater control and flexibility in MFH...
December 29, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28028541/butterfly-magnetoresistance-quasi-2d-dirac-fermi-surface-and-topological-phase-transition-in-zrsis
#17
Mazhar N Ali, Leslie M Schoop, Chirag Garg, Judith M Lippmann, Erik Lara, Bettina Lotsch, Stuart S P Parkin
Magnetoresistance (MR), the change of a material's electrical resistance in response to an applied magnetic field, is a technologically important property that has been the topic of intense study for more than a quarter century. We report the observation of an unusual "butterfly"-shaped titanic angular magnetoresistance (AMR) in the nonmagnetic Dirac material, ZrSiS, which we find to be the most conducting sulfide known, with a 2-K resistivity as low as 48(4) nΩ⋅cm. The MR in ZrSiS is large and positive, reaching nearly 1...
December 2016: Science Advances
https://www.readbyqxmd.com/read/28028477/emergent-adaptive-behaviour-of-grn-controlled-simulated-robots-in-a-changing-environment
#18
Yao Yao, Veronique Storme, Kathleen Marchal, Yves Van de Peer
We developed a bio-inspired robot controller combining an artificial genome with an agent-based control system. The genome encodes a gene regulatory network (GRN) that is switched on by environmental cues and, following the rules of transcriptional regulation, provides output signals to actuators. Whereas the genome represents the full encoding of the transcriptional network, the agent-based system mimics the active regulatory network and signal transduction system also present in naturally occurring biological systems...
2016: PeerJ
https://www.readbyqxmd.com/read/28025516/motivations-and-limitations-associated-with-vaping-among-people-with-mental-illness-a-qualitative-analysis-of-reddit-discussions
#19
Ratika Sharma, Britta Wigginton, Carla Meurk, Pauline Ford, Coral E Gartner
This study aims to understand the nature and significance of online lay discussions about e-cigarettes and mental illness. We systematically searched the website Reddit.com using keywords related to e-cigarettes and mental illness. We coded relevant posts into themes under the framework of motivations for and limitations of vaping for people with mental illness. The thematic analysis included 3263 comments from 133 discussion threads. Six themes were classified as motivations to vape for people with mental illness: Self-medication; Quitting smoking; Freedom and control; Hobby; Social connectedness; and Motivation from caregivers and online communities...
December 22, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28024323/self-assembled-active-plasmonic-waveguide-with-a-peptide-based-thermomechanical-switch
#20
Kilian Vogele, Jonathan List, Günther Pardatscher, Nolan B Holland, Friedrich C Simmel, Tobias Pirzer
Nanoscale plasmonic waveguides composed of metallic nanoparticles are capable of guiding electromagnetic energy below the optical diffraction limit. Signal feed-in and readout typically require the utilization of electronic effects or near-field optical techniques, whereas for their fabrication mainly lithographic methods are employed. Here we developed a switchable plasmonic waveguide assembled from gold nanoparticles (AuNPs) on a DNA origami structure that facilitates a simple spectroscopic excitation and readout...
December 27, 2016: ACS Nano
keyword
keyword
59849
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"