Results 121 to 130 of about 171,913 (339)

Selective Aggregation Experiments on Planetesimal Formation and Mercury-Like Planets

open access: yesGeosciences, 2018
Much of a planet’s composition could be determined right at the onset of formation. Laboratory experiments can constrain these early steps. This includes static tensile strength measurements or collisions carried out under Earth’s gravity and
Gerhard Wurm
doaj   +1 more source

DNA‑Directed Assembly of Photonic Nanomaterials for Diagnostic and Therapeutic Applications

open access: yesAdvanced Materials, EarlyView.
DNA‐directed assembly offers a powerful strategy for constructing structured photonic nanomaterials with precise spatial control. This review provides a comprehensive overview of recent advancements in DNA‐assembled photonic nanomaterials for diagnostics and therapeutics, highlighting key design principles, functionalization strategies, and optical ...
Longjiang Ding   +5 more
wiley   +1 more source

Dust Coagulation Assisted by Streaming Instability in Protoplanetary Disks

open access: yesThe Astrophysical Journal
The streaming instability is a promising mechanism for planetesimal formation. The instability can rapidly form dense clumps that collapse self-gravitationally, which is efficient for large dust grains with Stokes number of the order of 0.1.
Ryosuke T. Tominaga, Hidekazu Tanaka
doaj   +1 more source

Iron abundance correlations and an occurrence distribution discrepancy from ongoing planet migration [PDF]

open access: yesarXiv, 2013
Whether the higher occurrence of giant planets being hosted by metal-rich versus metal-poor stars results from formation or from "pollution" has been a question of intense debate. We present new patterns that emerge when planet/star systems are separated by stellar [Fe/H], and when systems with stellar companions are separated out.
arxiv  

Enhancing Oxygen Evolution Electrocatalysis in Heazlewoodite: Unveiling the Critical Role of Entropy Levels and Surface Reconstruction

open access: yesAdvanced Materials, EarlyView.
An innovative high‐entropy heazlewoodite is synthesized, where the formation of a high‐entropy phase significantly enhanced oxygen evolution reaction activity, and the oxidation potential evolved stabilized high‐entropy sulfide‐hydroxide oxide species at the interface improved electrochemical stability. Abstract Entropy engineering has proven effective
Hangning Liu   +9 more
wiley   +1 more source

Outflow Driven by a Protoplanet Embedded in the TW Hya Disk

open access: yesThe Astrophysical Journal Letters
Gas giant planets are formed by gas accretion onto planetary cores in protoplanetary disks. However, direct evidence of this process is still lacking, limiting our understanding of planetary formation processes.
Tomohiro C. Yoshida   +6 more
doaj   +1 more source

A Brief Overview of Planet Formation [PDF]

open access: yes, 2018
The initial conditions, physics, and outcome of planet formation are now constrained by detailed observations of protoplanetary disks, laboratory experiments, and the discovery of thousands of extrasolar planetary systems. These developments have broadened the range of processes that are considered important in planet formation, to include disk ...
openaire   +4 more sources

Intravasation‐On‐µDevice (INVADE): Engineering Dynamic Vascular Interfaces to Study Cancer Cell Intravasation

open access: yesAdvanced Materials, EarlyView.
Cancer metastasis begins with intravasation, a complex process involving cancer‐endothelial interactions. INVADE (Intravasation‐on‐µDevice), a biomimetic microfluidic platform enables high‐throughput analysis of intravasation under controlled conditions.
Fengtao Jiang   +12 more
wiley   +1 more source

Asymmetric Temperature Variations In Protoplanetary Disks. I. Linear Theory, Corotating Spirals, and Ring Formation

open access: yesThe Astrophysical Journal
Protoplanetary disks can exhibit asymmetric temperature variations due to phenomena such as shadows cast by the inner disk or localized heating by young planets. We investigate the disk features induced by these asymmetric temperature variations. We find
Zhaohuan Zhu   +2 more
doaj   +1 more source

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