Results 21 to 30 of about 5,140 (182)

Lunar PNT system concept and simulation results

Open Astronomy, 2022
The revived interest of many countries and the growing number of ongoing and scheduled missions to the Moon increases the significance of supporting navigation system development.
Kaplev Sergey, Titov Maxim, Valentirova Tamara, Mozharov Igor, Bolkunov Alexei, Yaremchuk Valeriy   +5 more
doaj   +1 more source

Reference ranges for foetal nasal bone length, prenasal thickness, and interocular distance at 18 to 24 weeks’ gestation in low-risk pregnancies

BMC Pregnancy and Childbirth, 2017
Background The aim of the present study was to establish the normal ranges for foetal nasal bone length (NBL), prenasal skin thickness (PNT), interocular distance (IOD), and ratio of prenasal thickness to- nasal bone length (PNT/ NBL) at 18–24 weeks ...
Ayşegül Altunkeser, M. Kazım Körez
doaj   +1 more source

Concise Definition of Aviation PNT User Requirements Based on OFD [PDF]

E3S Web of Conferences, 2020
Definition of aviation is the core of PNT system requirements analysis and research, The quality of PNT user requirements definition will directly affect the scientificity and effectiveness of other research work of the system, QFD(Quality Function ...
Wang Yan, Zhao Wei, Yu Su, Shen YangHe
doaj   +1 more source

Measuring Ventilatory Activity with Structured Light Plethysmography (SLP) Reduces Instrumental Observer Effect and Preserves Tidal Breathing Variability in Healthy and COPD

Frontiers in Physiology, 2017
The use of a mouthpiece to measure ventilatory flow with a pneumotachograph (PNT) introduces a major perturbation to breathing (“instrumental/observer effect”) and suffices to modify the respiratory behavior.
Marie-Cécile Niérat, Bruno-Pierre Dubé, Bruno-Pierre Dubé, Bruno-Pierre Dubé, Claudia Llontop, Claudia Llontop, Agnès Bellocq, Agnès Bellocq, Lila Layachi Ben Mohamed, Lila Layachi Ben Mohamed, Isabelle Rivals, Isabelle Rivals, Christian Straus, Christian Straus, Thomas Similowski, Thomas Similowski, Pierantonio Laveneziana, Pierantonio Laveneziana   +17 more
doaj   +1 more source

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

Coffee 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   +1 more source

Postoperative neck tilt in Lenke 1 and 2 AIS patients after correction surgery: a novel predictive index

BMC Musculoskeletal Disorders, 2019
Background Postoperative neck tilt (PNT) is a phenomenon in adolescent idiopathic scoliosis (AIS) patients which is distinct form shoulder imbalance. There were scarce studies performed to explore the risk factors for PNT in Lenke 1 and 2 AIS patients ...
Yilin Yang, Mingyuan Yang, Zongde Yang, Kai Chen, Jinyi Bai, Jian Zhao, Haijian Ni, Changwei Yang, Ming Li   +8 more
doaj   +1 more source

Discussion on the Construction of PNT Policies, Regulations and Standard System

天地一体化信息网络, 2021
The national comprehensive PNT system of systems (SoS) with the BeiDou system as its core is a signifi cant part of the new generation of information infrastructures.Perfect policies, regulations and standards are important prerequisites and guarantees ...
Gang LIU, Zuoya ZHENG, Qinghao XUE, Yao WANG   +3 more
doaj   +2 more sources

Foundational PNT profile :

, 2021
The national and economic security of the United States (US) is dependent upon the reliable functioning of the nation’s critical infrastructure. Positioning, Navigation, and Timing (PNT) services are widely deployed throughout this infrastructure.
Michael Bartock, Joseph Brule, Ya-Shian Li-Baboud, Suzanne Lightman, James McCarthy, Karen Reczek, Doug Northrip, Arthur Scholz, Theresa Suloway   +8 more
openaire   +1 more source

Quantitative ultrasound assessment of bone tissue in premature newborn twins

Patologìâ, 2022
Multiple pregnancy is associated with a high risk premature newborn twins (PNT) birth and the formation of low bone mass. Determining the state of bone tissue (BT) after birth is important for understanding the dynamics of its changes in the PNTs’ growth.
A. Yu. Tsymbal, Yu. V. Kotlova
doaj   +1 more source

Enhancing PPP-B2b Performance with Regional Atmospheric Augmentation

Remote Sensing
Currently, the PPP-B2b service faces challenges such as long convergence times and re-convergence issues after signal interruptions due to the lack of high-precision atmospheric enhancement.
Qing Zhao, Shuguo Pan, Wang Gao, Xianlu Tao, Hao Liu, Zeyu Zhang, Qiang Wang   +6 more
doaj   +1 more source