Results 51 to 60 of about 239,302 (308)

Space Math: Lunar Math [PDF]

, 2008
This booklet includes 17 problems relating to the Moon and its exploration. Images from NASA are analyzed to determine image scales and the physical sizes of various crates and features.
Sten Odenwald
core  

Instrument to Study Plume Surface Interactions (PSI) on the Lunar Surface: Science Motivation, Requirements, Instrument Overview, and Test Plans

Aerospace
Safe landings are imperative to accomplish NASA’s Artemis goal to enable human exploration on the Moon, including sample collection missions. However, a process known as plume surface interaction (PSI) presents a significant hazard to lunar landings. PSI
Ariana Bueno, Michael J. Krasowski, Norman Prokop, Lawrence C. Greer, Christina M. Adams, Nilton O. Rennó   +5 more
doaj   +1 more source

Blood‐Based Circulating Tumor DNA Assays for Early Colorectal Cancer Detection: A Systematic Review of Performance in Asymptomatic Screening Populations

International Journal of Cancer, EarlyView.
Early detection of colorectal cancer via population‐based screening programs can reduce incidence and mortality, but current screening approaches are limited. This systematic review evaluated the screening potential of blood‐based circulating tumor DNA assays in asymptomatic screening populations.
Caroline Ledertoug Kahn, Maria Wissing Rasmussen, Jakob Kleif, Inge Søkilde Pedersen, Christina Therkildsen   +4 more
wiley   +1 more source

Quasi-periodic Solutions of the Spatial Lunar Three-body Problem [PDF]

, 2013
By application of KAM theorem to Lidov-Ziglin's global study of the quadrupolar approximation of the spatial lunar three-body problem, we establish the existence of several families of quasi-periodic orbits in the spatial lunar three-body problem.Comment:
Zhao, Lei
core   +2 more sources

A Safe and Efficient Global Path-Planning Method Considering Multiple Environmental Factors of the Moon Using a Distributed Computation Strategy

Remote Sensing
Lunar-rover path planning is a key topic in lunar exploration research, with safety and computational efficiency critical for achieving long-distance planning.
Ruyan Zhou, Yuchuan Liu, Zhonghua Hong, Haiyan Pan, Yun Zhang, Yanling Han, Jiang Tao   +6 more
doaj   +1 more source

Reidite Formation From Zircon Subjected to 20, 40, and 60 GPa Shock Experiments

Journal of Raman Spectroscopy, EarlyView.
Structure disordering as a result of shock pressure: In zircon shocked from 20 to 60 GPa, the shock‐induced structural disorder increases with increasing shock pressure (gray area). Shock disorder of zircon is an integral part of its transformation to reidite: Reidite occurs after amorphous material.
Dmitry A. Zamyatin, Elizaveta Kovaleva
wiley   +1 more source

Comparing non‐staining methods with Mutvei's solution to visualize growth increments in short‐lived intertidal marine gastropod shells

Limnology and Oceanography: Methods, EarlyView.
Abstract Mutvei's solution is a widely utilized standard staining method for revealing growth increments in biogenic carbonates; however, it is a slightly toxic, destructive approach with varying success across species groups. Therefore, there has been growing interest in finding non‐toxic, less destructive, and straightforward alternative techniques ...
Mahsa Alidoostsalimi, Amy L. Prendergast, Sean Ulm, Ariana B. J. Lambrides, Ian J. McNiven, Russell N. Drysdale, Nguurruumungu Indigenous Corporation, Walmbaar Aboriginal Corporation RNTBC   +7 more
wiley   +1 more source

A proposal of lunar long duration method (Fabrication of lunar environment simulator and experimental validation)

Nihon Kikai Gakkai ronbunshu, 2014
A lunar long duration method which utilizes a characteristic of a very low thermal conductivity of lunar regolith has been proposed. The principle of this method is to put heater in desired depth of the regolith and heat up the regolith layer during ...
Ryota NOTSU, Hosei NAGANO, Hiroyuki OGAWA   +2 more
doaj   +1 more source

First 20 Years of Orbitrap Mass Spectrometry as the Mainstream Analytical Technique

Mass Spectrometry Reviews, EarlyView.
ABSTRACT This review traces the first 20 years of Orbitrap mass spectrometry as a mainstream high‑resolution and accurate‑mass (HR/AM) technology. It outlines the historical development of the Orbitrap analyzer, the evolution of major instrument families, and the key technological innovations that enabled its widespread adoption. Particular emphasis is
Alexander Makarov
wiley   +1 more source

Interrelationships among handgrip strength, body composition, physical activity, and quality of life in adults with cystic fibrosis: A cross‐sectional study

Nutrition in Clinical Practice, EarlyView.
Abstract Background In individuals with cystic fibrosis (CF), lean mass and muscle strength are important predictors of clinical outcomes. This study evaluated associations among body composition, handgrip strength, muscle quality, physical activity, and health‐related quality of life in CF. Methods This observational, cross‐sectional study included 27
Benjamin H. Crain, Carly Harris, Moriah P. Bellissimo, Lucia A. Gonzalez Ramirez, Elizabeth A. Ivie, William R. Hunt, Vin Tangpricha, Thomas R. Ziegler, Ryan A. Harris, Jessica A. Alvarez   +9 more
wiley   +1 more source