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https://www.readbyqxmd.com/read/28731978/differences-in-spatiotemporal-parameters-between-trained-runners-and-untrained-participants
#1
Josué Gómez-Molina, Ana Ogueta-Alday, Christopher Stickley, Jesús Cámara, Jon Cabrejas-Ugartondo, Juan García-López
Gómez-Molina, J, Ogueta-Alday, A, Stickley, C, Tobalina, JC, Cabrejas-Ugartondo, J, and García-López, J. Differences in spatiotemporal parameters between trained runners and untrained participants. J Strength Cond Res 31(8): 2169-2175, 2017-The aim of this study was to compare the spatiotemporal parameters of trained runners and untrained participants with the same foot strike pattern (rearfoot) during running at controlled speeds. Twenty-one participants were classified in 2 groups according to their training experience: Trained (n = 10, amateur runners with long distance training experience) and Untrained (n = 11, healthy untrained participants)...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28731850/the-diagnostic-accuracy-of-biomarkers-for-diagnosis-of-primary-biliary-cholangitis-pbc-in-anti-mitochondrial-antibody-ama-negative-pbc-patients-a-review-of-literature
#2
Federica de Liso, Caterina Matinato, Mariangela Ronchi, Rita Maiavacca
Primary biliary cholangitis (PBC), also known as primary biliary cirrhosis, is an autoimmune disease of the liver characterized by anti-mitochondrial antibodies (AMA) in 90%-95% of patients. The aim of this study was to evaluate the diagnostic value of several serum biomarkers in patients with PBC but negative for AMA. Some antinuclear antibodies (ANA) pattern, detected by indirect immunofluorescence (IIF), such as multiple nuclear dot (MND) and rim-like patterns are well-known to be specific for PBC. The corresponding nuclear antigens are the components of the nuclear pore complex (Gp210 for rim-like pattern) and Sp100, PML proteins (for MND pattern) detectable by immunoblotting and ELISA methods...
July 21, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28731764/phase-tuned-entangled-state-generation-between-distant-spin-qubits
#3
R Stockill, M J Stanley, L Huthmacher, E Clarke, M Hugues, A J Miller, C Matthiesen, C Le Gall, M Atatüre
Quantum entanglement between distant qubits is an important feature of quantum networks. Distribution of entanglement over long distances can be enabled through coherently interfacing qubit pairs via photonic channels. Here, we report the realization of optically generated quantum entanglement between electron spin qubits confined in two distant semiconductor quantum dots. The protocol relies on spin-photon entanglement in the trionic Λ system and quantum erasure of the Raman-photon path information. The measurement of a single Raman photon is used to project the spin qubits into a joint quantum state with an interferometrically stabilized and tunable relative phase...
July 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28731737/robust-single-shot-spin-measurement-with-99-5-fidelity-in-a-quantum-dot-array
#4
Takashi Nakajima, Matthieu R Delbecq, Tomohiro Otsuka, Peter Stano, Shinichi Amaha, Jun Yoneda, Akito Noiri, Kento Kawasaki, Kenta Takeda, Giles Allison, Arne Ludwig, Andreas D Wieck, Daniel Loss, Seigo Tarucha
We demonstrate a new method for projective single-shot measurement of two electron spin states (singlet versus triplet) in an array of gate-defined lateral quantum dots in GaAs. The measurement has very high fidelity and is robust with respect to electric and magnetic fluctuations in the environment. It exploits a long-lived metastable charge state, which increases both the contrast and the duration of the charge signal distinguishing the two measurement outcomes. This method allows us to evaluate the charge measurement error and the spin-to-charge conversion error separately...
July 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28731351/theory-of-light-modulated-emission-spectroscopy
#5
Mehdi Ansari-Rad, Juan Bisquert
Perovskite solar cells and fluorescent collectors formed by a dispersion of quantum dots in a transparent solid are paradigmatic devices for photon capture and utilization that involve the coupling of photon displacement, absorption and regeneration. In order to obtain information about the coupled photonic processes in systems involving photon recycling, we analyse the transfer function for modulated outgoing to incoming photon flux. We show the physical features of light-to-light impedance that reveals a trap-limited diffusion of photons coupled with the nonradiative recombination...
July 21, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28730817/efficient-solid-state-electrochemiluminescence-from-high-quality-perovskite-quantum-dot-films
#6
Jingjing Xue, Ziyi Zhang, Fenfen Zheng, Qin Xu, Jinchun Xu, Guizheng Zou, Lingling Li, Jun-Jie Zhu
Halide perovskite materials have emerged as a new class of revolutionary photovoltaic and optoelectronic nanomaterials. However, the study on electrochemiluminescence (ECL) from halide perovskite nanomaterials is still in its infancy due to their instability, sensitivity, and difficulties in purification and film formation. Here we propose a scraping coating method for the fabrication of high-quality halide perovskite quntum dot (QD) film on electrode, which shows dense and uniform packing with minimum grain size...
July 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28730807/cationic-carbon-dots-for-modification-free-detection-of-hyaluronidase-via-an-electrostatic-controlled-ratiometric-fluorescence-assay
#7
Weiqiang Yang, Jiancong Ni, Fang Luo, Wen Weng, Qiao-Hua Wei, Zhenyu Lin, Guonan Chen
Carbon dots (CDs) emerge as excellent fluorescent nanomaterials, but the full exploitation and application of their exceptional properties in the development of fluorescence assay are still rare. In this work, cationic carbon dots (C-CDs) covered with a plenty of positive charges on the surface were synthesized through a facile ultrasonic method. Negatively charged hyaluronic acid (HA) caused the aggregation of positively charged C-CDs and neutral red (NR) along its linear chain via electrostatic adsorption, leading to a remarkable förster resonance energy transfer (FRET) from C-CDs to NR...
July 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28730806/investigation-of-exciton-recombination-zone-in-quantum-dot-light-emitting-diodes-using-a-fluorescent-probe
#8
Xiaoyu Huang, Heng Zhang, Dingxin Xu, Feng Wen, Shuming Chen
Exciton recombination zone, where the photons are generated, can greatly affect the performance such as the efficiency, the color purity of the quantum dot (QD) light-emitting diodes (QLEDs). To probe the exciton recombination zone, 4-(dicyanomethylene)-2-t-butyl-6(1,1,7,7 -tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) is doped into the charge transport layer as a fluorescent sensor; by monitoring the Förster resonant energy transfer (FRET) between QD and DCJTB, the location of the recombination zone can be determined...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28730426/phytaspase-loaded-mn-doped-zns-quantum-dots-when-embedded-into-chitosan-nanoparticles-leads-to-improved-chemotherapy-of-hela-cells-using-in-cisplatin
#9
Sharmila Narayanan, Deepanjalee Dutta, Neha Arora, Lingaraj Sahoo, Siddhartha Sankar Ghosh
OBJECTIVES: To investigate the potential of recombinant phytaspase loaded manganese (Mn) doped zinc sulphide (ZnS) quantum dots embedded chitosan nanoparticles for augmenting cisplatin induced chemotherapy of HeLa cells. RESULTS: The recombinant phytaspase was cloned into bacterial expression vector PGEX-4T-2. The expressed and purified recombinant plant phytaspase protein from Escherichia coli BL21 was immobilized onto the cationic nanocomposite. Confocal microscopy elucidated the delivery of these luminescent nanocomposites inside cervical cancer HeLa cells...
July 20, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28730258/morphology-with-immunohistochemical-and-genetic-profiling-of-high-grade-neuroendocrine-carcinoma-of-colon-a-case-report-with-review-of-literature
#10
Andrzej Wincewicz, Artur Kowalik, Sebastian Zięba, Stanisław Sułkowski, Stanisław Góźdź
Here we present a challenging case of a hepatic flexure colon tumor of 61-year-old woman with no primary lesion of lung cancer. Immunohistochemistry was applied and 50 genes were analyzed by next-generation sequencing (NGS) technology. The tumor contained medium to large size neoplastic cells with evident nucleoli to be diagnosed poorly differentiated neuroendocrine predominantly large cell carcinoma of colon [G3: World Health Organization (WHO) 2010] (pT3 N0: 7th edition pTNM). Cytokeratin (CK) AE1÷AE3 staining was predominantly membranous with partial distribution in "dot-like" pattern in perinecrotic cancer fields to be reminiscent of small cell carcinoma...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28729522/site-controlled-and-advanced-epitaxial-ge-si-quantum-dots-fabrication-properties-and-applications
#11
Moritz Brehm, Martyna Grydlik
In this review, we report on fabrication paths, challenges, and emerging solutions to integrate group-IV epitaxial quantum dots (QDs) as active light emitters into the existing standard Si technology. Their potential as laser gain material for the use of optical intra- and inter-chip interconnects as well as possibilities to combine a single-photon-source-based quantum cryptographic means with Si technology will be discussed. We propose that the mandatory addressability of the light emitters can be achieved by a combination of organized QD growth assisted by templated self-assembly, and advanced inter-QD defect engineering to boost the optical emissivity of group-IV QDs at room-temperature...
July 21, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28728978/anticancer-drug-loaded-quantum-dots-engineered-polymeric-nanoparticles-diagnosis-therapy-combined-approach
#12
D Belletti, G Riva, M Luppi, G Tosi, F Forni, M A Vandelli, B Ruozi, F Pederzoli
Primary Effusion Lymphoma (PEL) is an HHV-8-related non Hodgkin lymphoma localized in body cavities (as pleural, peritoneal and pericardial) presenting lymphomatous effusion that, until now, lack of an effective therapy. Curcumin was reported to display pro-apoptotic effect via the inhibition of the JAK/STAT pathway, that is overexpressed in PEL cells, as consequence of virus infection. The administration of curcumin is severely restricted by its physicochemical properties, mainly its low solubility in biological fluid and consequently low bioavailability...
July 17, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28728900/ultra-sensitive-aptasensor-based-on-a-gqd-nanocomposite-for-detection-of-hepatitis-c-virus-core-antigen
#13
Kazhal Ghanbari, Mahmoud Roushani, Azadeh Azadbakht
In the present study, by using the aptamer proximity binding assay strategy, a novel electrochemical aptasensor is described for ultrasensitive detection of hepatitis C virus (HCV) core antigen. The immobilization surface is prepared by the modification of a glassy carbon electrode (GCE) with a graphene quantum dots (GQD). GQD were introduced as a novel and suitable substrate for aptamers through π-π stacking interactions, the richness of hydrophilic edges as well as hydrophobic plane in GQD which enhances the aptamer absorption on the electrode surface...
July 17, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28728181/the-value-of-diagnostic-work-up-in-the-evaluation-of-white-dot-syndromes
#14
Neal V Palejwala, Gagan Sawhney, Matthew Raecker, Chrstina J Flaxel, Steven Yeh
BACKGROUND AND OBJECTIVE: To determine the diagnostic yield of systemic work-up in white dot syndromes. PATIENTS AND METHODS: A retrospective chart review. RESULTS: Eighty-six consecutive patients with a diagnosis of a white dot syndrome were identified. Forty-three had a diagnosis of birdshot chorioretinopathy. Overall, 395 diagnostic tests were performed with a diagnostic yield of 11.9%. The test with the greatest diagnostic yield was HLA-A29 typing (89%)...
July 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28727460/2d-organic-superlattice-promoted-via-combined-action-of-%C3%AF-%C3%AF-stacking-and-dipole-dipole-interaction-in-discotic-liquid-crystals
#15
Wanying Zhang, Shuai-Feng Zhang, Zhenhu Zhang, Huanzhi Yang, Ao Zhang, Xingtian Hao, Jianchuang Wang, Chunxiu Zhang, Jialing Pu
A series of discotic liquid crystals based on hexapentyloxytriphenylene (HAT5) have been investigated where one out of the six ether side chains of a triphenylene core was replaced by an ester side chain and named for 5a-5h. During the process of studying these compounds, the characteristic straight line defect of ordered columnar structure was identified by polarizing optical microscopy (POM) and liquid crystal state over a wide temperature range was obtained by differential scanning calorimetry (DSC). Basic phase structure and molecular arrangement were assigned by one-dimensional wide-angle X-ray diffraction (1D WAXD), small angle X-ray scattering (SAXS), two-dimensional wide-angle X-ray diffraction (2D WAXD) and transmission electron microscope (TEM)...
July 20, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28726952/porphyra-polysaccharide-derived-carbon-dots-for-non-viral-co-delivery-of-different-gene-combinations-and-neuronal-differentiation-of-ectodermal-mesenchymal-stem-cells
#16
Jiaxin Chen, Qiang Wang, Jie Zhou, Wenwen Deng, Qingtong Yu, Xia Cao, Jianping Wang, Fengxia Shao, Yang Li, Ping Ma, Myron Spector, Jiangnan Yu, Ximing Xu
In this study, multifunctional fluorescent carbon dots (CDs) were synthesized using a one-pot hydrothermal carbonization reaction, with the naturally-occurring porphyra polysaccharide (PPS) serving as a single carbon source for the first time and ethylenediamine (Ed) acting as the surface passivation agent. The resulting CDs enjoyed a high quantum yield (56.3%), excitation-dependent fluorescence, small size (<10 nm), spherical shape, uniform distribution, positive surface charge, low cytotoxicity and excellent ability to condense macromolecular plasmid DNA...
July 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28726942/conjugated-polymer-covalently-modified-graphene-oxide-quantum-dots-for-ternary-electronic-memory-devices
#17
Fei Fan, Bin Zhang, Yaming Cao, Xutong Yang, Junwei Gu, Yu Chen
Zero dimensional graphene oxide (GO) quantum dots (GOQDs) have been expected to play an important role in the development of new memory materials. When the size of GO was reduced to that of GOQDs, both the electron affinity and ionization potential of GO were found to be decreased, and this was followed by the elevation of lowest energy unoccupied molecular orbital (LUMO) energy level. This implies that the electron withdrawing ability of GOQDs is weaker than that of GO. In this work, a novel arylamine-based polyazomethine covalently functionalized graphene oxide quantum dots (TPAPAM-GOQDs), which was synthesized using an amidation reaction, was for the first time used to fabricate a ternary memory device with a configuration of gold/TPAPAM-GOQDs/indium tin oxide...
July 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28726864/bn-nanoflake-quantum-dot-arrays-structural-stability-and-electronic-and-half-metallic-properties
#18
R Hu, Z H Zhang, Z Q Fan
New one-dimensional (1D) crystals, 1D quantum-dot arrays(1D QDAs), are proposed and constructed by an ordered arrangement of zigzag-edged triangular h-BN nanoflakes. Their geometrical stability is confirmed by the calculated binding energy, phonon dispersion and molecular dynamics simulation. These 1D QDAs demonstrate different quantum confinement effects on electronic and half-metallic properties due to different linking modes. For example, in the nonmagnetic state, different 1D QDAs are predicted to be semiconductors or metals remarkably depending on their linking manner, whereas in the ferromagnetic state, they are found to be all prominent half-metals but with greatly different gaps from ∼0...
July 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28726685/enhanced-thermoelectric-performance-of-bi-sub-2-sub-te-sub-3-sub-by-uniform-dispersion-of-single-wall-carbon-nanotubes
#19
Kaleem Ahmad, Chunlei Wan
The advancement in nanostructured powder processing has attracted recently great interest as a cost effective and scalable strategy for high performance thermoelectric bulks. However, the level of technical breakthrough as realized in quantum dot supperlattice/wire has not yet demonstrated in these materials. Here, we report first ever study on the uniform dispersion of single wall carbon nanotubes (SWCNTs) in nanostructured Bi2Te3 bulk and their effect on thermoelectric parameters above room temperature. The Bi<sub>2</sub>Te<sub>3</sub> based SWCNTs composites were prepared through controlled powder processing and their thermoelectric properties were finely tuned at nanoscale by regulating various (0...
July 20, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28726671/in-situ-decoration-of-plasmonic-au-nanoparticles-on-graphene-quantum-dots-graphitic-carbon-nitride-hybrid-and-evaluation-of-its-visible-light-photocatalytic-performance
#20
Biswajit Choudhury, Pravat Kumar Giri, Rajender Gone
This work spotlights the development of a plasmonic photocatalyst showing surface plasmon induced enhanced visible light photocatalytic performance. Plasmonic Au nanoparticles (NPs) are decorated over the hybrid nanosystem of graphitic carbon nitride (GCN) and graphene quantum dots (GQD) by citrate reduction method. Surface plasmon resonance (SPR) induced enhancement of Raman G and 2D band intensity is encountered on excitation of the Plasmonic hybrid at 514.5 nm, which is near to the 532 nm absorption band of Au nanoparticles...
July 20, 2017: Nanotechnology
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