Results 11 to 20 of about 117,054 (296)
Planar Waveguide from PPV Derivatives
Journal of Mathematical and Fundamental Sciences, 2019 . We report in this paper the result of thin film fabrication of MEH-PPV and MEH-PPB having good optical transparency and low surface roughness suitable for planar waveguide application.
F. Fitrilawati +3 more
doaj +1 more source
Mesoscopic modelling of 2-CN-PPV/PPV polymer LED [PDF]
Journal of Materials Science: Materials in Electronics, 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. The use of heterojunctions made of two polymers can be a strategy for improving the efficiency of polymer light emitting diodes (PLEDs) at ...
Barbosa, Helder M. C. +1 more
openaire +2 more sources
Miscibility and Luminescence Properties of MEH-PPV/DPO-PPV Polyblends [PDF]
Journal of Polymer Research, 2005 Poly(2-methoxy-5-(2′-ethyl-hexyloxy)-p-phenylenevinylene) (MEH-PPV) and poly(2,3-diphenyl-5-octyl-p-phenylenevinylene) (DPO-PPV) are basically immiscible as verified by fluorescence spectroscopy and differential scanning calorimetry. This immiscibility results in insufficient energy transfer from DPO-PPV to MEH-PPV in photoluminescence.
Chou, Hsuan-Liang +2 more
openaire +1 more source
Rheological Behavior of Precursor PPV Monolayers [PDF]
Langmuir, 2004 The rheological behavior of different precursor poly(p-phenylene vinylene) (prec-PPV) monolayers at the air-water interface was investigated using an interfacial stress rheometer (ISR). This device nicely reveals a transition of the precursor poly(2,5-dimethoxy-1,4 phenylene vinylene) (prec-DMePPV) monolayer from Newtonian to elastic behavior with ...
Luinge, JW +5 more
openaire +2 more sources
PPV-HB: Harmonic Balance for Oscillator/PLL Phase Macromodels [PDF]
2006 IEEE/ACM International Conference on Computer Aided Design, 2006 A unique feature of oscillators is that small but sustained external perturbations lead to unboundedly large changes in phase, thereby making standard harmonic balance (HB) inapplicable to realistic oscillator phase macromodels. In this paper, we rectify this situation by presenting a novel extension of HB that is capable of handling oscillator phase ...
Ting Mei, Jaijeet Roychowdhury
openaire +1 more source
The natural evolution of idiophatic epimacular membrane
Biomedical Papers, 2017 Background and Aims: Epiretinal membrane (ERM) refers to a semi-translucent tissue layer found on the inner surface of the retina especially in older people.
Libor Hejsek +4 more
doaj +1 more source
Plant Protection Science, 2009 Results of research aiming at monitoring of climate changes impact on plant pathogens distribution such as Zucchini yellow mosaic virus (ZYMV), quarantine Plum pox virus (PPV) and quarantine phytoplasma European stone fruit yellows (ESFY) are presented ...
Jaroslav Polák
doaj +1 more source
Detection of the phytosanitary status of stone fruit cultivars under in vitro conditions in Hungary
Plant Protection Science, 2002 Prunus species are prone to infections by a range of pathogens (LAIMER 2002). Stone fruit plantations are mainly affected by Plum pox virus (PPV), Prune dwarf virus (PDV), Prunus necrotic ringspot virus (PNRSV) and European Stone Fruit Yellows ...
I. Balla +5 more
doaj +1 more source
VISUAL SYMPTOMS OF PPV INFECTION ON LEAVES IN A PLUM COLLECTION IN RELATION TO THE SUSCEPTIBILITY OF VARIETIES AND PLANTING AGE [VIZUÁLNÍ PŘÍZNAKY INFEKCE PPV NA LISTECH V KOLEKCI SLIVONÍ VZHLEDEM K CITLIVOSTI GENOTYPŮ A STÁŘÍ VÝSADBY] [PDF]
Vědecké Práce OvocnářskéThe occurrence of Potyvirus plumpoxi has a major impact on the economic importance of plum trees. Potyvirus plumpoxi is a dangerous pathogen that causes disease in all stone fruits worldwide.
Boris Krška +3 more
doaj +1 more source
Pars plana vitrectomy in uveitis in the era of microincision vitreous surgery
Indian Journal of Ophthalmology, 2020 Pars plana vitrectomy (PPV) in uveitis is indicated for various diagnostic and therapeutic indications. With the advent of microincision vitreous surgery (MIVS), the use of PPV in uveitis has increased with a wider spectrum of indications due to shorter ...
Reema Bansal +3 more
doaj +1 more source