Results 111 to 120 of about 4,624,977 (307)
Molecular Clouds: Comet Factories? [PDF]
International Astronomical Union Colloquium, 1985 AbstractRecent discoveries seem to indicate a catastrophic history of terrestrial evolution, explicable in terms of Oort cloud disturbance by molecular clouds in the Galactic disc. The problem of Oort cloud replenishment thus assumes considerable significance and reasons are given for supposing comet exchange takes place during actual penetration of ...
openaire +1 more source
Advanced Science, EarlyView.Conjugated poly(imide dioxime)‐based microspheres establish a radiometal coordination‐driven conformational interlocked network with ultra‐high radiostability. This platform enables low‐temperature, multi‐radionuclide labeling for SPECT/PET/MRI imaging and radionuclide therapy. Mechanistic insights from EXAFS and DFT reveal enhanced stability, while in
Xiao Xu +10 more
wiley +1 more source
Discovery of a Giant Spiral Molecular Cloud in the Galactic Anticenter
The Astronomical JournalWe present wide-field and high-sensitivity CO (1–0) molecular line observations toward the Galactic anticenter region, using the 13.7 m millimeter telescope of the Purple Mountain Observatory.
Xuepeng Chen +14 more
doaj +1 more source
St. Cloud State University and the City of St. Cloud Survey [May 2008] [PDF]
, 2008 Conducted in May 2008, this survey was conducted to discover the opinions of St. Cloud residents regarding St. Cloud State University, including the use of campus facilities and services by city residents, evaluation of those facilities and services, and
St. Cloud State University
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The Repository @ St. Cloud State Statistic Insert [2021] [PDF]
, 2021 2021 handout highlighting statistics from The Repository @ St.
St. Cloud State University
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Halide Perovskite: A Rich Source of Thermal Insulator
Advanced Science, EarlyView.Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye +3 more
wiley +1 more source
The Astrophysical JournalYoung stars form in clusters within molecular clouds, but older stars are evenly distributed across the galactic disk, necessitating an explanation for cluster dissolution.
Xiao-Tong Chen, Guang-Xing Li
doaj +1 more source
Review of Gastrointestinal Capsule Robots: Materials, Actuation, Diagnostics, and Therapeutics
Advanced Science, EarlyView.This review examines gastrointestinal capsule robots through a systems engineering lens, covering shell materials, actuation and localization strategies, diagnostic modalities, therapeutic interventions, and commercialization status. By mapping the complete technological chain from fabrication to clinical deployment, this work identifies critical gaps ...
Zengsheng Li +8 more
wiley +1 more source
Advanced Science, EarlyView.How can humanity achieve lunar self‐sufficiency? We utilize Au topology networks to modify the abundant lunar ilmenite. This catalyst, under sunlight, can convert waste carbon dioxide into space fuel. This design leverages the moon's natural vacuum for green manufacturing, avoiding the waste of gold and serving as “artificial chloroplasts” to sustain ...
Yahang Wang +9 more
wiley +1 more source
Multi‐Scale Bionic Structure Constructs Biomass Flame‐Retardant Thermal Insulation Foam Material
Advanced Science, EarlyView.Inspired by mussel adhesion and hierarchical brick‐and‐mortar architectures, a cellulose‐based biomimetic foam is constructed by anchoring bentonite nanosheets onto a polydopamine‐decorated cellulose nanofiber network. The resulting foam combines low thermal conductivity with intrinsic flame retardancy and full biodegradability, presenting a ...
Jianming Liao +10 more
wiley +1 more source