Results 1 to 10 of about 51,964 (204)

Development of Comprehensive PNT and Resilient PNT [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2023
Any single Positioning, Navigation and Timing (PNT) technology has its vulnerability and limits, even the powerful Global Navigation Satellite System (GNSS) is no exception.
Xia REN, Yuanxi YANG
doaj   +2 more sources

Performance of Some Promising Genotypes of Fine-flavour Cocoa Selected at Penataran Estate, East Java [PDF]

open access: yesCoffee and Cocoa Research Journal, 2014
Prelimanary selection at Panataran Estate, East Java found five genotypes of promising fine flavor cocoa (PNT 12, PT 16, PNT 17, PNT 18, and PNT 33B) which had high yielding potency and estimated tolerant to VSD valuation of superior characters in each ...
Indah Anita Sari, Agung Wahyu Susilo
doaj   +5 more sources

Resilient PNT Concept Frame [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2019
The concept of resilient positioning, navigation and timing (PNT) is described. The definition of resilient PNT is given, the relationship between integrated (or comprehensive) PNT and resilient PNT is analyzed, and it is pointed out that the integrated ...
Yuanxi YANG
doaj   +2 more sources

Position, Navigation, and Timing (PNT) Through Low Earth Orbit (LEO) Satellites: A Survey on Current Status, Challenges, and Opportunities

open access: yesIEEE Access, 2022
More and more satellites are populating the sky nowadays in the Low Earth orbits (LEO). Most of the targeted applications are related to broadband and narrowband communications, Earth observation, synthetic aperture radar, and internet-of-Things (IoT ...
Fabricio Prol   +2 more
exaly   +3 more sources

ETS transcription factor pointed controls germline survival in Drosophila. [PDF]

open access: yesPLoS Genetics
Proper gonad development is a pre-requisite for gametogenesis and reproduction. During female gonad formation in Drosophila, the EGF receptor (EGFR) signalling pathway ensures the correct number of primordial germ cells (PGCs) populate the larval gonad ...
Alicia E Rosales-Nieves   +4 more
doaj   +2 more sources

METTL3 inhibits primed-to-naïve transition of pluripotent stem cells through m6A-YTHDF2-pluripotency/Gstp1 mRNA degradation axis [PDF]

open access: yesCell Regeneration
N6-methyladenosine (m6A) plays crucial roles in development and cellular reprogramming. During embryonic development, pluripotency transitions from a naïve to a primed state, and modeling the reverse primed-to-naïve transition (PNT) provides a valuable ...
Sa Li   +13 more
doaj   +2 more sources

Environmental exposure to perchlorate, nitrate, and thiocyanate in relation to biological aging in U.S. adults, a cross-sectional NHANES study [PDF]

open access: yesFrontiers in Public Health
BackgroundFew studies have investigated the associations between perchlorate, nitrate, and thiocyanate (PNT) and biological aging. This study aimed to assess the association between PNT and biological aging among U.S.
Weiliang Kong, Yina Jin
doaj   +2 more sources

LEO-PNT Feasibility Aspects: Satellite Navigation Payload Size, Weight, and Power Analysis

open access: yesIEEE Access
Low Earth Orbit (LEO) satellites are expected to improve the robustness and reliability of critical Positioning, Navigation, and Timing (PNT) services by increasing both the efficiency and diversity of Global Navigation Satellite Systems (GNSS). However,
Mayank   +2 more
exaly   +3 more sources

Ultra-high permeable phenine nanotube membranes for water desalination [PDF]

open access: yes, 2022
Nanopore desalination technology hinges on high water-permeable membranes which, at the same time, block ions efficiently. In this study, we consider a recently synthesized [Science 363, 151-155 (2019)] phenine nanotube (PNT) for water desalination ...
Maiti, Prabal K.   +3 more
core   +2 more sources

Pentostatin Biosynthesis Pathway Elucidation and Its Application

open access: yesFermentation, 2022
Pentostatin (PNT), a nucleoside antibiotic with a 1,3-diazo ring structure, is distributed in several actinomycetes and fungi species. Its special structure makes PNT possess a wide spectrum of biological and pharmacological properties, such as ...
Hongyu Zhang   +4 more
doaj   +1 more source

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