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https://www.readbyqxmd.com/read/28337941/lesion-symptom-map-of-cognitive-postural-interference-in-multiple-sclerosis
#1
Serena Ruggieri, Fulvia Fanelli, Letizia Castelli, Nikolaos Petsas, Laura De Giglio, Luca Prosperini
OBJECTIVE: To investigate the disease-altered structure-function relationship underlying the cognitive-postural interference (CPI) phenomenon in multiple sclerosis (MS). METHODS: We measured postural sway of 96 patients and 48 sex-/age-matched healthy controls by force platform in quiet standing (single-task (ST)) while performing the Stroop test (dual-task (DT)) to estimate the dual-task cost (DTC) of balance. In patient group, binary T2 and T1 lesion masks and their corresponding lesion volumes were obtained from magnetic resonance imaging (MRI) of brain...
March 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28332832/serpentine-ultra-long-path-with-extended-routing-super-high-resolution-traveling-wave-ion-mobility-ms-using-structures-for-lossless-ion-manipulations
#2
Liulin Deng, Ian K Webb, Sandilya V B Garimella, Ahmed M Hamid, Xueyun Zheng, Randolph V Norheim, Spencer A Prost, Gordon A Anderson, Jeremy A Sandoval, Erin Shammel Baker, Yehia M Ibrahim, Richard D Smith
Ion mobility (IM) separations have a broad range of analytical applications, but insufficient resolution limits many applications. Here we report on ion mobility separations in a Structures for Lossless Ion Manipulations (SLIM) Serpentine Ultra-long Path with Extended Routing (SUPER) traveling wave (TW) ion mobility (IM) module in conjunction with mass spectrometry (MS). Ions were confined in the SLIM by rf fields in conjunction with a DC guard bias, enabling essentially lossless TW transmission over greatly extended paths...
March 23, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28328925/a-source-controlled-data-center-network-model
#3
Yang Yu, Mangui Liang, Zhe Wang
The construction of data center network by applying SDN technology has become a hot research topic. The SDN architecture has innovatively separated the control plane from the data plane which makes the network more software-oriented and agile. Moreover, it provides virtual multi-tenancy, effective scheduling resources and centralized control strategies to meet the demand for cloud computing data center. However, the explosion of network information is facing severe challenges for SDN controller. The flow storage and lookup mechanisms based on TCAM device have led to the restriction of scalability, high cost and energy consumption...
2017: PloS One
https://www.readbyqxmd.com/read/28319178/inter-nesting-movements-and-habitat-use-of-adult-female-kemp-s-ridley-turtles-in-the-gulf-of-mexico
#4
Donna J Shaver, Kristen M Hart, Ikuko Fujisaki, David Bucklin, Autumn R Iverson, Cynthia Rubio, Thomas F Backof, Patrick M Burchfield, Raul de Jesus Gonzales Diaz Miron, Peter H Dutton, Amy Frey, Jaime Peña, Daniel Gomez Gamez, Hector J Martinez, Jaime Ortiz
Species vulnerability is increased when individuals congregate in restricted areas for breeding; yet, breeding habitats are not well defined for many marine species. Identification and quantification of these breeding habitats are essential to effective conservation. Satellite telemetry and switching state-space modeling (SSM) were used to define inter-nesting habitat of endangered Kemp's ridley turtles (Lepidochelys kempii) in the Gulf of Mexico. Turtles were outfitted with satellite transmitters after nesting at Padre Island National Seashore, Texas, USA, from 1998 through 2013 (n = 60); Rancho Nuevo, Tamaulipas, Mexico, during 2010 and 2011 (n = 11); and Tecolutla, Veracruz, Mexico, during 2012 and 2013 (n = 11)...
2017: PloS One
https://www.readbyqxmd.com/read/28317996/rational-designed-strategy-to-dispel-mutual-interference-of-mercuric-and-ferric-ions-towards-robust-ph-stable-fluorescent-carbon-nanodots
#5
Yang Liu, Yanan Liu, Jinpyo Lee, Joong Hee Lee, Mira Park, Hak Yong Kim
As one of the most promising fluorometric nanosensors for metal ion sensing, carbon nanodots (C-dots) have developed rapidly in recent years. However, it is still a thorny problem to shield the mutual interference of two metal ions towards C-dots, e.g., Hg(2+) and Fe(3+) ions. In the present work, we propose rational routes for the unique interaction between C-dots and Hg(2+) or Fe(3+). The selectivity of the as-obtained label-free C-dots can be effectively switched by P3O10(5-) and SCN(-). The resultant C-dots possess superior photoluminescence intensity stability in a wide pH range or in certain redox circumstances, which are highly preferred in terms of practical metal-ion detection...
March 20, 2017: Analyst
https://www.readbyqxmd.com/read/28301291/histological-and-histomorphometrical-analysys-on-a-loaded-implant-with-platform-switching-and-conical-connection-a-case-report
#6
Giovanna Iezzi, Flavia Iaculli, Roberta Calcaterra, Adriano Piattelli, Michele Di Girolamo, Luigi Baggi
The association of Morse taper implant-abutment design with the use of a smaller abutment diameter (platform-switching) may improve dental implant success rate and prevent peri-implant bone loss. The aim of the present study was to histologically and histomorphometrically evaluate the behavior of peri-implant tissues around an implant with a conical connection associated with platform-switching. A platform-switched Morse-cone connection implant was inserted in the left posterior mandible in a 61-year-old patient...
March 16, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28300173/exonuclease-processivity-of-archaeal-replicative-dna-polymerase-in-association-with-pcna-is-expedited-by-mismatches-in-dna
#7
Takuya Yoda, Maiko Tanabe, Toshiyuki Tsuji, Takao Yoda, Sonoko Ishino, Tsuyoshi Shirai, Yoshizumi Ishino, Haruko Takeyama, Hirokazu Nishida
Family B DNA polymerases comprise polymerase and 3' ->5' exonuclease domains, and detect a mismatch in a newly synthesized strand to remove it in cooperation with Proliferating cell nuclear antigen (PCNA), which encircles the DNA to provide a molecular platform for efficient protein-protein and protein-DNA interactions during DNA replication and repair. Once the repair is completed, the enzyme must stop the exonucleolytic process and switch to the polymerase mode. However, the cue to stop the degradation is unclear...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28296981/mucosa-thickness-and-peri-implant-crestal-bone-stability-a-clinical-and-histologic-prospective-cohort-trial
#8
Luigi Canullo, Fabio Camacho-Alonso, Marco Tallarico, Silvio Mario Meloni, Erta Xhanari, David Penarrocha-Oltra
PURPOSE: To correlate soft tissue thickness and peri-implant bone remodeling of platform-switching implants. MATERIALS AND METHODS: This comparative prospective trial evaluated, for up to 3 years after implant loading, the influence of soft tissue thickness on changes in peri-implant marginal hard tissue levels. Any patient who was partially edentate in the mandible and required at least two adjacent implant-supported restorations was recruited at the University of Valencia in Spain...
March 15, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28294200/four-year-post-loading-results-of-full-arch-rehabilitation-with-immediate-placement-and-immediate-loading-implants-a-retrospective-controlled-study
#9
Alain Simonpieri, Roberta Gasparro, Giuseppe Pantaleo, Jolanda Mignogna, Francesco Riccitiello, Gilberto Sammartino
OBJECTIVES: The aim of this study was to evaluate implant survival rate and to measure peri-implant bone changes in fullarch rehabilitations with immediate placement and immediate loading implants with platform switching and Morse taper connection, in addition to platelet-rich fibrin (PRF) and buccal bone augmentation, after 4 years of follow-up. METHOD AND MATERIALS: In this retrospective controlled study, patients who had been fully rehabilitated with immediate placement and immediate loading implants were evaluated 4 years post-loading...
March 14, 2017: Quintessence International
https://www.readbyqxmd.com/read/28291361/reversible-tethering-of-polymers-onto-catechol-based-titanium-platforms
#10
William Laure, David Fournier, Patrice Woisel, Joël Lyskawa
In this work, we report on the reversible tethering of end-functionalized polymers onto catechol-based titanium platforms by exploiting the reversible Diels-Alder (DA) cycloaddition reaction. For this purpose, furan and maleimide end-functionalized polymers, prepared via RAFT polymerization, were covalently grafted through a DA reaction onto reactive titanium platforms elaborated from catechol-based anchors incorporating either the furan or the maleimide moiety. As a proof of concept, a hydrophilic poly(oligo(ethylene glycol) acrylate) (POEGA) and a hydrophobic poly(2,2,2-trifluoroethyl acrylate) (PTFEA) were grafted onto titanium surfaces and subsequently detached by exploiting the thermo-reversible nature of the DA reaction (i...
March 14, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28276442/an-electrically-actuated-molecular-toggle-switch
#11
Lukas Gerhard, Kevin Edelmann, Jan Homberg, Michal Valášek, Safa G Bahoosh, Maya Lukas, Fabian Pauly, Marcel Mayor, Wulf Wulfhekel
Molecular electronics is considered a promising approach for future nanoelectronic devices. In order that molecular junctions can be used as electrical switches or even memory devices, they need to be actuated between two distinct conductance states in a controlled and reproducible manner by external stimuli. Here we present a tripodal platform with a cantilever arm and a nitrile group at its end that is lifted from the surface. The formation of a coordinative bond between the nitrile nitrogen and the gold tip of a scanning tunnelling microscope can be controlled by both electrical and mechanical means, and leads to a hysteretic switching of the conductance of the junction by more than two orders of magnitude...
March 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28269618/a-dynamic-data-source-selection-system-for-smartwatch-platform
#12
Ebrahim Nemati, Konstantinos Sideris, Haik Kalantarian, Majid Sarrafzadeh
A novel data source selection algorithm is proposed for ambulatory activity tracking of elderly people. The algorithm introduces the concept of dynamic switching between the data collection modules (a smartwatch and a smartphone) to improve accuracy and battery life using contextual information. We show that by making offloading decisions as a function of activity, the proposed algorithm improves power consumption and accuracy of the previous work by 7 hours and 5% respectively compared to the baseline.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268405/wearable-ecg-platform-for-continuous-cardiac-monitoring
#13
S P Preejith, R Dhinesh, Jayaraj Joseph, Mohanasankar Sivaprakasam
An ultra-low power ECG platform for continuous and minimally intrusive monitoring for systems with minimal processing capabilities, is presented in this paper. The platform is capable of detecting abnormalities in the ECG signal by extracting and analyzing features related to various cardiac trends. The platform is built to continuously operate on any of the 12 leads and the presented work includes a single lead implementation that works on lead I or II. A single lead, wearable ECG patch that can detect rhythm based arrhythmias and continuously monitor beat-to-beat heart rate and respiratory rate has been developed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28262721/control-of-randomly-scattered-surface-plasmon-polaritons-for-multiple-input-and-multiple-output-plasmonic-switching-devices
#14
Wonjun Choi, Yonghyeon Jo, Joonmo Ahn, Eunsung Seo, Q-Han Park, Young Min Jhon, Wonshik Choi
Merging multiple microprocessors with high-speed optical networks has been considered a promising strategy for the improvement of overall computation power. However, the loss of the optical communication bandwidth is inevitable when interfacing between optical and electronic components. Here we present an on-chip plasmonic switching device consisting of a two-dimensional (2D) disordered array of nanoholes on a thin metal film that can provide multiple-input and multiple-output channels for transferring information from a photonic to an electronic platform...
March 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28261906/randomized-controlled-clinical-trial-comparing-two-dental-implants-with-different-neck-configurations
#15
Ignacio Sanz-Martín, Ignacio Sanz-Sánchez, Fernando Noguerol, Susy Cok, Alberto Ortiz-Vigón, Mariano Sanz
BACKGROUND: Peri-implant bone levels can vary according to the implant neck macro-design and the implant-abutment interface. PURPOSE: To compare the changes in soft and hard tissues when using a one-piece implant with a machined collar (TG) versus a two-piece implant with a progressive platform widening and a platform switching connection (SP). MATERIAL AND METHODS: Partially edentulous patients willing to receive one or two implants in the posterior maxilla or mandible were randomized to the control (TG) or to the test group (SP)...
March 6, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28243389/three-dimensional-finite-element-analysis-of-platform-switched-implant
#16
Se-Young Moon, Young-Jun Lim, Myung-Joo Kim, Ho-Beom Kwon
PURPOSE: The purpose of this study was to analyze the influence of the platform switching concept on an implant system and peri-implant bone using three-dimensional finite element analysis. MATERIALS AND METHODS: Two three-dimensional finite element models for wide platform and platform switching were created. In the wide platform model, a wide platform abutment was connected to a wide platform implant. In the platform switching model, the wide platform abutment of the wide platform model was replaced by a regular platform abutment...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28227876/a-dynamic-data-source-selection-system-for-smartwatch-platform
#17
Ebrahim Nemati, Konstantinos Sideris, Haik Kalantarian, Majid Sarrafzadeh, Ebrahim Nemati, Konstantinos Sideris, Haik Kalantarian, Majid Sarrafzadeh, Haik Kalantarian, Majid Sarrafzadeh, Konstantinos Sideris, Ebrahim Nemati
A novel data source selection algorithm is proposed for ambulatory activity tracking of elderly people. The algorithm introduces the concept of dynamic switching between the data collection modules (a smartwatch and a smartphone) to improve accuracy and battery life using contextual information. We show that by making offloading decisions as a function of activity, the proposed algorithm improves power consumption and accuracy of the previous work by 7 hours and 5% respectively compared to the baseline.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226575/wearable-ecg-platform-for-continuous-cardiac-monitoring
#18
S P Preejith, R Dhinesh, Jayaraj Joseph, Mohanasankar Sivaprakasam, S P Preejith, R Dhinesh, Jayaraj Joseph, Mohanasankar Sivaprakasam, R Dhinesh, Mohanasankar Sivaprakasam, S P Preejith, Jayaraj Joseph
An ultra-low power ECG platform for continuous and minimally intrusive monitoring for systems with minimal processing capabilities, is presented in this paper. The platform is capable of detecting abnormalities in the ECG signal by extracting and analyzing features related to various cardiac trends. The platform is built to continuously operate on any of the 12 leads and the presented work includes a single lead implementation that works on lead I or II. A single lead, wearable ECG patch that can detect rhythm based arrhythmias and continuously monitor beat-to-beat heart rate and respiratory rate has been developed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225598/novel-aptasensor-platform-based-on-ratiometric-surface-enhanced-raman-spectroscopy
#19
Yan Wu, Fubing Xiao, Zhaoyang Wu, Ruqin Yu
A novel aptasensor platform has been developed for quantitative detection of adenosine triphosphate (ATP) based on a ratiometric surface-enhanced Raman scattering (SERS) strategy. The thiolated 3'-Rox-labeled complementary DNA (cDNA) is first immobilized on the gold nanoparticle (AuNP) surface and then hybridizes with the 3'-Cy5-labeled ATP-binding aptamer probe (Cy5-aptamer) to form a rigid double-stranded DNA (dsDNA), in which the Cy5 and Rox Raman labels are used to produce the ratiometric Raman signals...
February 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28223408/inducing-circular-rna-formation-using-the-crispr-endoribonuclease-csy4
#20
Erin K Borchardt, Rita M Meganck, Heather A Vincent, Christopher B Ball, Silvia B V Ramos, Nathaniel J Moorman, William F Marzluff, Aravind Asokan
Circular RNAs (circRNAs) are highly stable, covalently closed RNAs that are regulated in a spatiotemporal manner and whose functions are largely unknown. These molecules have the potential to be incorporated into engineered systems with broad technological implications. Here we describe a switch for inducing backsplicing of an engineered circRNA that relies on the CRISPR endoribonuclease, Csy4, as an activator of circularization. The endoribonuclease activity and 3' end-stabilizing properties of Csy4 are particularly suited for this task...
February 21, 2017: RNA
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