keyword
MENU ▼
Read by QxMD icon Read
search

niti

keyword
https://www.readbyqxmd.com/read/28643130/retreatability-of-three-calcium-silicate-containing-sealers-and-one-epoxy-resin-based-root-canal-sealer-with-four-different-root-canal-instruments
#1
David Donnermeyer, Clarissa Bunne, Edgar Schäfer, Till Dammaschke
OBJECTIVES: The objective of the study was to compare the retreatability of three calcium silicate-containing sealers (BioRoot RCS, MTA Fillapex, Endo C.P.M.) and an epoxy resin-based sealer (AH Plus) with different root canal instruments (Hedström files, Reciproc R40, Mtwo retreatment file R 25/.05 + Mtwo 40/.06, and F6 SkyTaper) concerning sealer remnants and retreatment time. MATERIALS AND METHODS: Root canals of 192 teeth were instrumented with Reciproc R40...
June 22, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28628834/functional-niti-grids-for-in-situ-straining-in-the-tem
#2
U Schürmann, C Chluba, N Wolff, D Smazna, R Lima de Miranda, P Junker, R Adelung, E Quandt, L Kienle
In situ measurements are a pivotal extension of conventional transmission electron microscopy (TEM). By means of the shape memory alloy NiTi thin film Functional Grids were produced for in situ straining as alternative or at least complement of expensive commercial holders. Due to the martensite-austenite transition temperature straining effects can be observed by use of customary heating holders in the range of 50 to 100°C. The grids can be produced in diversified designs to fit for different strain situations...
June 9, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28620065/critical-outcomes-in-longitudinal-observational-studies-and-registries-in-patients-with-rheumatoid-arthritis-an-omeract-special-interest-group-report
#3
Natalia V Zamora, Robin Christensen, Niti Goel, Louise Klokker, Maria A Lopez-Olivo, Lars E Kristensen, Loreto Carmona, Vibeke Strand, Jeffrey R Curtis, Maria E Suarez-Almazor
OBJECTIVE: Outcomes important to patients are those that are relevant to their well-being, including quality of life, morbid endpoints, and death. These outcomes often occur over the longterm and can be identified in prospective longitudinal observational studies (PLOS). There are no standards for which outcome domains should be considered. Our overarching goal is to identify critical longterm outcome domains for patients with rheumatic diseases, and to develop a conceptual framework to measure and classify them within the scope of OMERACT Filter 2...
June 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28613149/carlosrosaea-hohenbergiae-sp-nov-and-carlosrosaea-aechmeae-sp-nov-two-tremellaceous-yeasts-isolated-from-bromeliads-in-north-eastern-brazil
#4
Ciro R Felix, Hector Mauricio Casanova Navarro, Gustavo Vasconcelos Bastos Paulino, Leonardo Broetto, Melissa Fontes Landell
Yeast surveys associated with different bromeliads in north-eastern Brazil led to the proposal of two novel yeast species, Carlosrosaea hohenbergiae sp. nov. and Carlosrosaea aechmeae sp. nov., belonging to the Tremellales clade (Agaricomycotina, Basidiomycota). Analysis of the sequences of the internal transcribed spacer (ITS) region and D1/D2 domain of the LSU rRNA gene suggested an affinity with a phylogenetic lineage that includes recently reclassified Carlosrosaeavrieseae. Six isolates of the novel species were obtained from different bromeliad species collected in three Atlantic Forest fragments in Alagoas state, Brazil...
June 14, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28581745/transient-formation-and-reactivity-of-a-high-valent-nickel-iv-oxido-complex
#5
Sandeep K Padamati, Davide Angelone, Apparao Draksharapu, Gloria Primi, David James Martin, Moniek Tromp, Marcel Swart, Wesley R Browne
A reactive high valent dinuclear nickel(IV) oxido bridged complex is reported that can be formed at room temperature by reaction of [(L)2Ni(II)2(-X)3]X (X = Cl or Br) with NaOCl in methanol or acetonitrile (where L = 1,4,7-trimethyl-1,4,7-triazacyclononane). The unusual Ni(IV) oxido species is stabilized within a dinuclear tris-μ-oxido bridged structure as [(L)2Ni(IV)2(μ-O)3]2+. Its structure and its reactivity with organic substrates is demonstrated through a combination of UV-vis absorption, resonance Raman, 1H NMR, EPR and X-ray absorp-tion (near-edge) spectroscopy, ESI mass spectrometry, and DFT methods...
June 5, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28578890/dynamic-torsional-and-cyclic-fracture-behavior-of-profile-rotary-instruments-at-continuous-or-reciprocating-rotation-as-visualized-with-high-speed-digital-video-imaging
#6
Daisuke Tokita, Arata Ebihara, Kana Miyara, Takashi Okiji
INTRODUCTION: This study examined the dynamic fracture behavior of nickel-titanium rotary instruments in torsional or cyclic loading at continuous or reciprocating rotation by means of high-speed digital video imaging. METHODS: The ProFile instruments (size 30, 0.06 taper; Dentsply Maillefer, Ballaigues, Switzerland) were categorized into 4 groups (n = 7 in each group) as follows: torsional/continuous (TC), torsional/reciprocating (TR), cyclic/continuous (CC), and cyclic/reciprocating (CR)...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28576038/the-effect-of-ph-fluoride-and-tribocorrosion-on-the-surface-properties-of-dental-archwires
#7
Petra Močnik, Tadeja Kosec, Janez Kovač, Milan Bizjak
Nickel-titanium and stainless steel are the most commonly used alloys for orthodontic treatments. Even though both are known to be resistant to corrosion, there are circumstances that can lead to undesired situations, like localized types of corrosion attack, wear during sliding of an archwire though brackets and breakdowns due to iatrogenic causes. The aim of this research was to analyse the influence of environmental effects on the corrosion and tribocorrosion properties of NiTi and stainless steel dental alloys...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28575575/tunable-mechanochemistry-of-lithium-battery-electrodes
#8
Nitin Muralidharan, Casey Brock, Adam P Cohn, Deanna Schauben, Rachel E Carter, Landon Oakes, Don Greg Walker, Cary L Pint
The interplay between mechanical strains and battery electrochemistry, or the tunable mechanochemistry of batteries, remains an emerging research area with limited experimental progress. In this report, we demonstrate how elastic strains applied to vanadium pentoxide (V2O5), a widely studied cathode material for Li-ion batteries, can modulate the kinetics and energetics of lithium ion intercalation. We utilize atomic layer deposition (ALD) to coat V2O5 materials onto the surface of a shapememory superelastic NiTi alloy, which allows electrochemical assessment at a fixed and measurable level of elastic strain imposed on the V2O5, with strain state assessed through Raman spectroscopy and X-ray diffraction...
June 2, 2017: ACS Nano
https://www.readbyqxmd.com/read/28573718/automatic-detection-of-end-diastolic-and-end-systolic-frames-in-2d-echocardiography
#9
Massoud Zolgharni, Madalina Negoita, Niti M Dhutia, Michael Mielewczik, Karikaran Manoharan, S M Afzal Sohaib, Judith A Finegold, Stefania Sacchi, Graham D Cole, Darrel P Francis
BACKGROUND: Correctly selecting the end-diastolic and end-systolic frames on a 2D echocardiogram is important and challenging, for both human experts and automated algorithms. Manual selection is time-consuming and subject to uncertainty, and may affect the results obtained, especially for advanced measurements such as myocardial strain. METHODS AND RESULTS: We developed and evaluated algorithms which can automatically extract global and regional cardiac velocity, and identify end-diastolic and end-systolic frames...
June 1, 2017: Echocardiography
https://www.readbyqxmd.com/read/28541260/combination-steroid-and-test-based-food-elimination-for-eosinophilic-esophagitis-a-retrospective-analysis
#10
Gregory Constantine, Neha Seth, Niti Chokshi, Charles G Minard, Danielle Guffey, Anthony P Olive, Carla M Davis
OBJECTIVES: Eosinophilic esophagitis (EoE) is a clinicopathologic disorder characterized by infiltration of eosinophils into the esophagus. Primary treatment approaches include topical corticosteroids and/or food elimination. The aim of the present study was to compare the effectiveness of combination therapy (topical corticosteroid plus test-based food elimination [FS]) with single therapy (topical corticosteroid [S] or test-based food elimination [F]). METHODS: Chart review of patients with EoE at Texas Children's Hospital (age <21 years) was performed...
June 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28539854/the-effect-of-hydrofluoric-acid-surface-treatment-on-the-cyclic-fatigue-resistance-of-k3-niti-instruments
#11
Kee-Yeon Kum, Seok Woo Chang
The aim of this study was to investigate the effect of 50% hydrofluoric acid (HF) surface treatment on the cyclic fatigue resistance (CFR) of K3 NiTi instruments. Twenty as-received and twenty HF-treated K3 NiTi instruments were compared in CFR. The surface texture and fracture surface of two instrument groups were examined with a scanning electron microscope (SEM). Additionally, any change of Ni and Ti composition from both instrument groups was investigated using energy dispersive spectrometry. The results were analyzed with t-test...
2017: Bioinorganic Chemistry and Applications
https://www.readbyqxmd.com/read/28529412/accelerated-wound-healing-harnessing-the-power-of-platelets-biomaterials-stem-cells-and-gene-therapy
#12
EDITORIAL
Niti Khunger
No abstract text is available yet for this article.
January 2017: Journal of Cutaneous and Aesthetic Surgery
https://www.readbyqxmd.com/read/28527845/cyclic-fatigue-resistance-of-oneshape-hyflex-edm-waveone-gold-and-reciproc-blue-nickel-titanium-instruments
#13
Mustafa Gündoğar, Taha Özyürek
INTRODUCTION: The purpose of this study was to compare the cyclic fatigue resistances of Reciproc Blue (VDW, Munich, Germany), HyFlex EDM (Coltene/Whaledent, Altstätten, Switzerland), WaveOne Gold (Dentsply Maillefer, Ballaigues, Switzerland), and OneShape (Micro Mega, Besancon, France) single-file NiTi systems. METHODS: Thirty Reciproc Blue R25 (25/.08), 30 HyFlex EDM (25/.∼), 30 WaveOne Gold Primary (25/.07), and 30 OneShape (25/.06) instruments were included in this study...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28523623/microbial-population-shift-caused-by-sulfamethoxazole-in-engineered-soil-aquifer-treatment-e-sat-system
#14
Ashwinkumar P Rudrashetti, Niti B Jadeja, Deepa Gandhi, Asha A Juwarkar, Abhinav Sharma, Atya Kapley, R A Pandey
The engineered-Soil Aquifer Treatment (e-SAT) system was exploited for the biological degradation of Sulfamethoxazole (SMX) which is known to bio-accumulate in the environment. The fate of SMX in soil column was studied through laboratory simulation for a period of 90 days. About 20 ppm SMX concentration could be removed in four consecutive cycles in e-SAT. To understand the microbial community change and biological degradation of SMX in e-SAT system, metagenomic analysis was performed for the soil samples before (A-EBD) and after SMX exposure (B-EBD) in the e-SAT...
June 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28503479/cyclic-fatigue-life-of-tango-endo-waveone-gold-and-reciproc-niti-instruments
#15
Koray Yılmaz, Taha Özyürek
OBJECTIVES: To compare the fatigue life of Tango-Endo, WaveOne GOLD, and Reciproc NiTi instruments under static model via artificial canals with different angles of curvature. MATERIALS AND METHODS: Reciproc R25, WaveOne GOLD Primary, and Tango-Endo instruments were included in this study (n = 20). All the instruments were rotated in artificial canals which were made of stainless steel with an inner diameter of 1.5 mm, 45°, 60°, and 90° angles of curvatures and a radius of curvature of 5 mm until fracture occurred, and the time to fracture was recorded in seconds using a digital chronometer...
May 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28482528/biocompatibility-of-hydroxyapatite-coatings-deposited-by-pulse-electrodeposition-technique-on-the-nitinol-superelastic-alloy
#16
F Marashi-Najafi, J Khalil-Allafi, M R Etminanfar
The present study deals with pulse electrochemical deposition of HA on NiTi alloy and in vitro evaluation of coatings. At first step, a thermo-chemical surface modification process was applied to control the Ni release of the alloy. The electrochemical deposition of CaP coatings was examined at both dilute and concentrated solutions. The morphology and the composition of coatings were studied using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Plate like and needle like morphologies were formed for dilute and concentrated solution respectively and HA phase was formed by increasing the pulse current density for both electrolyte...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28481083/recoverable-wire-shaped-supercapacitors-with-ultrahigh-volumetric-energy-density-for-multifunctional-portable-and-wearable-electronics
#17
Minjie Shi, Cheng Yang, Xuefeng Song, Jing Liu, Liping Zhao, Peng Zhang, Lian Gao
Wire-shaped supercapacitors (SCs) based on shape memory materials are of considerable interest for next-generation portable and wearable electronics. However, the bottleneck in this field is how to develop the devices with excellent electrochemical performance while well-maintaining recoverability and flexibility. Herein, a unique asymmetric electrode concept is put forward to fabricate smart wire-shaped SCs with ultrahigh energy density, which is realized by using porous carbon dodecahedra coated on NiTi alloy wire and flexible graphene fiber as yarn electrodes...
May 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28476464/environmental-temperature-drastically-affects-flexural-fatigue-resistance-of-nickel-titanium-rotary-files
#18
Nicola Maria Grande, Gianluca Plotino, Enrico Silla, Eugenio Pedullà, Gustavo DeDeus, Gianluca Gambarini, Francesco Somma
INTRODUCTION: The aim of the present study was to analyze how a low environmental temperature can affect the fatigue life of instruments made by different types of heat-treated nickel-titanium alloys. METHODS: The flexural cyclic fatigue of 40 new specimens for each of the following systems was tested for cyclic fatigue resistance: ProTaper Universal F2 (Dentsply Maillefer, Ballaigues, Switzerland), ProTaper Gold F2 (Dentsply Tulsa Dental Specialties, Tulsa, OK), Twisted Files SM2 (SybronEndo, Orange, CA), Mtwo #25...
May 2, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28474081/-clinical-study-of-premolar-extrusion-with-subgingival-decayed-defect-by-one-couple-orthodontic-niti-auxiliary-arch
#19
Fei Qin, Xiao-Qing Ma, Pei-Cheng Xu
PURPOSE: To evaluate the effect of one-couple orthodontic NiTi auxiliary arch on the premolar extrusion which had subgingival decayed defect. METHODS: A total of 30 cases with subgingival decayed defects over 2 mm under the proximal gingival margin were chosen including 18 first premolars and 12 second premolars. The first and second molars on the same side were connected steadily and the one-couple orthodontic force system was designed. The NiTi segmental arch was used to extrude the teeth...
February 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28461533/tackling-patient-centricity-a-report-from-the-grappa-2016-annual-meeting
#20
Niti Goel, Denis O'Sullivan, Ingrid Steinkoenig, Jana James, Chris A Lindsay, Laura C Coates, John Latella, Alexis Ogdie, Jeffrey Chau, Heidi Bertheussen, Willemina Campbell
In line with the global trend to have disease-related organizations be more patient-centric in their approach, the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA) has made substantial progress incorporating patient research partners (PRP) into psoriatic arthritis and psoriasis research. Herein we summarize the involvement of PRP at the GRAPPA 2016 annual meeting. Plans for future PRP engagement were also discussed.
May 2017: Journal of Rheumatology
keyword
keyword
68919
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"