Articles with "ppp" as a keyword



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Real-time multi-GNSS single-frequency precise point positioning

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Published in 2017 at "GPS Solutions"

DOI: 10.1007/s10291-017-0653-2

Abstract: Precise Point Positioning (PPP) is a popular Global Positioning System (GPS) processing strategy, thanks to its high precision without requiring additional GPS infrastructure. Single-Frequency PPP (SF-PPP) takes this one step further by no longer relying… read more here.

Keywords: multi gnss; ppp; gnss; frequency ... See more keywords
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Undifferenced ionospheric-free ambiguity resolution using GLONASS data from inhomogeneous stations

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Published in 2017 at "GPS Solutions"

DOI: 10.1007/s10291-017-0691-9

Abstract: GLONASS frequency division multiple access signals render ambiguity resolution (AR) rather difficult because: (1) Different wavelengths are used by different satellites, and (2) pseudorange inter-frequency biases (IFBs) cannot be precisely modeled by means of a… read more here.

Keywords: network; ppp; glonass; ambiguity ... See more keywords
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Radioanatomic study of maxillary sinus palatal process pneumatization.

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Published in 2021 at "Oral radiology"

DOI: 10.1007/s11282-021-00569-9

Abstract: OBJECTIVES To perform a detailed analysis of palatal process pneumatization (PPP) on cone beam computed tomography (CBCT) images. METHODS This study consisted of 376 maxillary sinuses of 188 patients aged 22-88 years who had maxillary CBCT… read more here.

Keywords: ppp; palatal process; pneumatization; type ... See more keywords
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Statistical analysis and quality control for GPS fractional cycle bias and integer recovery clock estimation with raw and combined observation models

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Published in 2017 at "Advances in Space Research"

DOI: 10.1016/j.asr.2017.06.053

Abstract: Abstract With the development of Ambiguity Resolution for Precise Point Positioning (PPP-AR) over the past years, there are three representative PPP-AR methods up to now: Fractional Cycle Bias (FCB) method, Integer Recovery Clock (IRC) method… read more here.

Keywords: estimation; ppp; method; quality control ... See more keywords
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Long-term time-varying characteristics of UPD products generated by a global and regional network and their interoperable application in PPP

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Published in 2020 at "Advances in Space Research"

DOI: 10.1016/j.asr.2020.10.005

Abstract: Abstract The quality and availability of Uncalibrated Phase Delay (UPD) solutions are crucial to the Precise Point Positioning (PPP) service, and the long-term temporal variability and its contributing factors should be better understood. In this… read more here.

Keywords: network; ppp; regional network; long term ... See more keywords
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Chemical characteristics, antioxidant capacities and hepatoprotection of polysaccharides from pomegranate peel.

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Published in 2018 at "Carbohydrate polymers"

DOI: 10.1016/j.carbpol.2018.09.013

Abstract: This proposed work aimed to investigate the chemical characteristic, antioxidant capacities and hepatoprotection effect of pomegranate peel polysaccharides (PPP) on CCl4-induced oxidative damage in mice. PPP was identified as the acidic heteropolysaccharides by HPLC methods.… read more here.

Keywords: antioxidant capacities; ppp; pomegranate peel; ccl4 induced ... See more keywords
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Development and characterization of porcine plasma protein-chitosan blended films

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Published in 2019 at "Food Packaging and Shelf Life"

DOI: 10.1016/j.fpsl.2019.100406

Abstract: Abstract The effects were studied of porcine plasma protein (PPP) and chitosan (CS) on the properties of blended films. Blended film solutions of PPP (3% w/w)/CS (1% w/w) at different ratios (100PPP:0CS, 80PPP:20CS, 50PPP:50CS and… read more here.

Keywords: protein; ppp; plasma protein; film ... See more keywords
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Identification of polysaccharides extracted from pea pod by-products and evaluation of their biological and functional properties.

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Published in 2018 at "International journal of biological macromolecules"

DOI: 10.1016/j.ijbiomac.2018.05.095

Abstract: A three-variable Box-Behnken design was employed to obtain the best possible combination of extraction time, ratio (raw material/water) and extraction temperature to allow maximum extraction yield of polysaccharides from pea pod (PPP). The preferred extraction… read more here.

Keywords: polysaccharides extracted; identification polysaccharides; extraction; ppp ... See more keywords
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Impact of polysorbate 65 on tripalmitin crystal growth and release stability of hot melt coated multiparticulate systems.

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Published in 2021 at "International journal of pharmaceutics"

DOI: 10.1016/j.ijpharm.2021.120970

Abstract: Hydrochlorothiazide (HCT) multiparticulate systems (MPS) were hot melt coated with the binary mixture of tripalmitin (PPP) and polysorbate 65 (PS 65) to gain an immediate release profile. Once, HCT MPS were produced with a constant… read more here.

Keywords: crystal growth; ppp; hct; hot melt ... See more keywords
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Identifying critical risks in Sponge City PPP projects using DEMATEL method: A case study of China

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Published in 2019 at "Journal of Cleaner Production"

DOI: 10.1016/j.jclepro.2019.04.067

Abstract: Abstract Sponge City (SC) projects offer an effective measure for coping with frequent occurrence of urban flooding as well as water shortage. In China, enormous demand for urban regeneration and short of capital has precipitated… read more here.

Keywords: ppp; ppp projects; critical risks; sponge city ... See more keywords
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Comparative analysis of real-time kinematic and PPP techniques in dynamic environment

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Published in 2020 at "Measurement"

DOI: 10.1016/j.measurement.2020.107995

Abstract: Abstract The main objective of this study is to assess the performance of the relative Real-time Kinematic (RTK) Global Navigation Satellite System (GNSS) Methods; i.e., Single-baseline & Network RTK, and Real-time Precise Point Positioning (RT-PPP);… read more here.

Keywords: real time; ppp; time; single baseline ... See more keywords