Results 61 to 70 of about 526,359 (299)

Development of Real-Time Precise Positioning Algorithm Using GPS L1 Carrier Phase Data [PDF]

Journal of Astronomy and Space Sciences, 2002
We have developed Real-time Phase DAta Processor(RPDAP) for GPS L1 carrier. And also, we tested the RPDAP's positioning accuracy compared with results of real time kinematic(RTK) positioning.
Jeong-Ho Joh, Byung-Kyu Choi, Jong-Uk Park, Kwan-Dong Park, Hyung-Chul Lim, Pil-Ho Park   +5 more
doaj   +1 more source

Upacicalcet: A Novel Intravenous Calcimimetic Agent for Patients Undergoing Hemodialysis With Secondary Hyperparathyroidism

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Secondary hyperparathyroidism (SHPT) is a common complication in patients receiving maintenance dialysis, driven by calcium and phosphate metabolism disturbances. Calcimimetics are central to the management of SHPT by enhancing calcium‐sensing receptor sensitivity and reducing parathyroid hormone secretion.
Fumihiko Koiwa, Daisuke Honda, Seigo Akari, Tadao Akizawa   +3 more
wiley   +1 more source

Real-time GNSS precise positioning: RTKLIB for ROS

International Journal of Advanced Robotic Systems, 2020
The global navigation satellite system (GNSS) constitutes an effective and affordable solution to the outdoor positioning problem. When combined with precise positioning techniques, such as the real time kinematic (RTK), centimeter-level positioning ...
António Ferreira, Bruno Matias, José Almeida, Eduardo Silva   +3 more
doaj   +1 more source

ECEF Position Accuracy and Reliability: Inertial Navigation with GNSS Precise Point Positioning (PPP) [PDF]

, 2020
This report presents experimental results for a moving platform using GPS PPP data for state estimation. Results from two PPP GPS state estimation approaches are presented: point-wise least squares (LS) and aided inertial navigation (INS). The point-wise
Farrell, Jay A., Rahman, Farzana, Uwineza, Jean-Bernard   +2 more
core  

Mechanical Design of the MID Split-and-Delay Line at the European XFEL [PDF]

, 2016
A new split-and-delay line (SDL) is under development for the Materials Imaging and Dynamics (MID) end station at the European XFEL.* The device utilises Bragg reflection to provide pairs of X-ray pulses with an energy of (5 - 10) keV and a continuously ...
Eisebitt, Stefan, Friedrich, B., Lu, Wei, Madsen, Anders, Noll, Tino, Roth, T.   +5 more
core   +1 more source

Precise point positioning with multipath estimation [PDF]

2016 IEEE/ION Position, Location and Navigation Symposium (PLANS), 2016
Precise Point Positioning with low-cost GNSS receivers is attractive for numerous applications, as it can provide centimeter-level positioning without the exchange of raw measurements from a reference station. However, pseudorange multipath has to be accurately considered for a reliable ambiguity fixing. In this paper, we derive a precise model for the
Patrick Henkel, Michele Iafrancesco, Andreas Sperl   +2 more
openaire   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Satellite Positioning and Orbit Determination System (SPODS): Introduction and Evaluation [PDF]

Journal of Geodesy and Geoinformation Science, 2018
The Satellite Positioning and Orbit Determination System (SPODS) is a software package for GNSS positioning/orbit determination, developed by the Xi’an Research Institute of Surveying and Mapping.
Ziqing WEI,Rengui RUAN,Xiaolin JIA,Xianbing WU,Xiaoyong SONG,Yue MAO,Laiping FENG,Yongxing ZHU
doaj  

Precise Point Positioning with Partial Ambiguity Fixing

Sensors, 2015
Reliable and rapid ambiguity resolution (AR) is the key to fast precise point positioning (PPP). We propose a modified partial ambiguity resolution (PAR) method, in which an elevation and standard deviation criterion are first used to remove the low ...
Pan Li, Xiaohong Zhang
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source