Results 91 to 100 of about 158,022 (252)

Mesoscopic modelling of 2-CN-PPV/PPV polymer LED [PDF]

open access: yes, 2007
Although optoelectronic devices made of polymers are very attractive ones (low cost, easy to make), problems related to charge transport, exciton quenching, among others, can be an obstacle for their performance.
Barbosa, Helder M. C.   +1 more
core   +1 more source

Effective Performance of the 2022 American College of Rheumatology/EULAR Classification Criteria for Antineutrophil Cytoplasmic Antibody–Associated Vasculitis in Pediatric Patients: An ARChiVe Study

open access: yesArthritis &Rheumatology, EarlyView.
Objective To assess the 2022 American College of Rheumatology (ACR)/EULAR classification criteria for antineutrophil cytoplasmic antibody–associated vasculitis (AAV) in children with chronic small‐to‐medium vessel vasculitis. Methods A cohort of 574 patients, identified by physician's diagnosis (MD‐diagnosis) in A Registry of Childhood Vasculitis, was ...
David A. Cabral   +41 more
wiley   +1 more source

Optimization of Paired Pulse Voltammetry Using Sawhorse Waveform

open access: yesInternational Journal of Electrochemical Science, 2015
The influence of the reduction process on paired-pulse voltammetry (PPV), which consists of two identical triangle-shaped pulses, was studied in this study by increasing peak potential duration.
Yoonbae Oh   +9 more
doaj   +1 more source

Photoluminescence properties of new PPV derivatives

open access: yes, 2011
International audienceWe investigate the emission properties of two copolymers by steady-state and time-resolved photoluminescence measurements. The copolymers are derived from poly-phenylene-vinylene (PPV) to which a non-conjugated ether group was added.
Lefrant, S.   +13 more
core   +1 more source

High‐Resolution Deep Learning Dixon Magnetic Resonance Imaging of the Sacroiliac Joints Is Noninferior to Standard Magnetic Resonance Imaging in Patients With Suspected Axial Spondyloarthritis

open access: yesArthritis &Rheumatology, EarlyView.
Objective To compare the multisequence standard magnetic resonance imaging (sMRI) protocol of the sacroiliac joints with a single high‐resolution deep learning–reconstructed Dixon sequence (DL‐Dixon) in patients with suspected axial spondyloarthritis (axSpA). Methods Seventy‐six patients with chronic low back pain and suspected axSpA underwent clinical,
Dominik Deppe   +12 more
wiley   +1 more source

Steps Toward Novel DP-PPV Derivatives

open access: yes, 2001
2,5-dicarbethoxy-3, 4-diphenylcyclopentadienone, a precursor to poly[ (2,3-diphenyl-ppheny lene )vinylene], DP-PPV, was produced as part of a chlorine precursor route (CPR) that leads to that polymer.
Grimes, Mike
core   +1 more source

Incidence and Disease Course of Polymyalgia Rheumatica During Two Decades: A Nationwide Study Across Health Care Sectors in Denmark

open access: yesArthritis &Rheumatology, EarlyView.
Objective A new algorithm enables the identification of patients with polymyalgia rheumatica (PMR) across health care sectors in Denmark. We estimated annual incidence rates from 2003 to 2024 and described the disease course, including the occurrence of late‐onset giant cell arteritis (GCA) and prednisolone or prednisone (PDN) treatment.
Agnete Overgaard Donskov   +4 more
wiley   +1 more source

Photoluminescence from MEH-PPV and DP-PPV in bulk and encapsulated in porous alumina

open access: yes, 2001
Two PPV derivatives, MEH-PPV and DP-PPV, are encapsulated in the nanopores of anodized alumina with different pore sizes (50/200 nm) and depth (10/60 urn).
Qi, Dong Feng
core   +1 more source

PPV ????????? ??? ?????????????????? ?????? ???????????? ?????? EL ????????? ?????? ??? ??????

open access: yes, 1998
Poly(p-phenylene vinylene), PPV??? ??????????????? ?????? ???????????????(electron transport layer, ETL)??? ????????? ?????? ???????????? ?????? ??????????????????(electroluminescence device, ELD)??? ???????????? ?????? ?????? ????????? ???????????????. ?
Shin, Dong Soo   +6 more
core  

Principal Component‐Based Classification of Blazar Candidates of Uncertain Type in the 4FGL/LAT

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT We adopted principal component analysis (PCA), linear discriminant analysis (LDA), and support vector machines (SVM), to study classification for a sample of 2708 Fermi blazars: 1142 BL Lac objects (BLLs), 759 flat spectrum radio quasars (FSRQs), and 807 blazar candidates of uncertain type (BCUs).
Wen‐Xin Yang   +13 more
wiley   +1 more source

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