Results 111 to 120 of about 1,052,332 (366)

Planetary population synthesis and the emergence of four classes of planetary system architectures. [PDF]

Eur Phys J Plus, 2023
Emsenhuber A, Mordasini C, Burn R.
europepmc   +1 more source

Beyond Fertilizers: NH4ZnPO4 for the Reversible Chemical Storage of Ammonia

Advanced Materials Interfaces, EarlyView.
A new inorganic ammonia uptake material as an alternative to activated carbon, zeolites, and metal–organic frameworks is reported. NH4ZnPO4, previously used as a fertilizer, can be a reversible chemical storage material for ammonia. The chemical storage mechanism depends on the particle morphology; therefore, the uptake amount per surface area ...
Takahiro Kozawa, Tai Hashiba, Kayo Fukuyama, Hiroya Abe, Shu Morita, Minoru Osada, Makio Naito   +6 more
wiley   +1 more source

A dilute sodium hydroxide technique for radiolarian extraction from cherts

Scientific Reports
Radiolarians have been used to determine geological ages and have contributed markedly to our understanding of Earth’s history. Hydrofluoric acid (HF) has traditionally been used to extract radiolarian fossils from siliceous deposits (i.e., radiolarian ...
Tetsuji Onoue, Sakiko Hori, Yuki Tomimatsu, Manuel Rigo   +3 more
doaj   +1 more source

Exocomets size distribution in the [Formula: see text] Pictoris planetary system. [PDF]

Sci Rep, 2022
Lecavelier des Etangs A, Cros L, Hébrard G, Martioli E, Duquesnoy M, Kenworthy MA, Kiefer F, Lacour S, Lagrange AM, Meunier N, Vidal-Madjar A.   +10 more
europepmc   +1 more source

A Sustainable Route From Quartz to Bifunctional Material with Adsorbed Lanthanides for Enhanced Fluorescent Activation in Doxycycline Sensing

Advanced Materials Interfaces, EarlyView.
The aim of this study is to develop a sensor material based on natural quartz combined with La(III) and Ce(III), both detected in Ni‐MH batteries, as well as Eu(III), for reliable qualitative and quantitative analysis of doxycycline over a broad concentration range.
Olha Semeshko, Maksym Fizer, Valeriia Sliesarenko, Jaroslav Briancin, Oleksandr Bondarchuk, Aleksandra Lobnik, Inna Melnyk   +6 more
wiley   +1 more source

Research of Influence of Bearing Preload on Dynamic Characteristic of High-speed Heavy-load Planetary Gear Transmission

Jixie chuandong, 2019
In order to analyze the influence of bearing preload on the dynamic characteristics of high-speed and heavy-load planetary gear transmission system， a dynamics model of high-speed heavy-load planetary gear transmission is established.
Xiangyang Xu, Song Fu, Xun Han, Xing Ai
doaj  

Oxygenation, Life, and the Planetary System during Earth's Middle History: An Overview. [PDF]

Astrobiology, 2021
Lyons TW, Diamond CW, Planavsky NJ, Reinhard CT, Li C.   +4 more
europepmc   +1 more source

Removal of Natural Organic Matter Fractions by Kaolin/Fly Ash Ceramic Microfiltration Membrane in Drinking Water: Insights from a Laboratory Scale Application

Advanced Materials Interfaces, EarlyView.
The prepared ceramic membrane exhibited 28.84 µm average pore size and hydrophilic properties (≈27.4° contact angle). FTIR shows the presence of aluminol, siloxane, and hydroxyl groups and XRD confirms the presence of quartz and kaolinite phases. Separation of natural organic matter from drinking water is achieved by microfiltration at 0.25 bar and is ...
Samkeliso S. Ndzimandze, Welldone Moyo, Oranso T. Mahlangu, Adolph A. Muleja, Thabo T. I. Nkambule, Alex T. Kuvarega   +5 more
wiley   +1 more source

Planetary optical and infrared imaging [PDF]

The purpose is to obtain and analyze high spatial resolution CCD coronagraphic images of extra-solar planetary material and solar system objects. These data will provide information on the distribution of planetary and proto-planetary material around ...
Terrile, Richard J.
core   +1 more source

Equilibria in the secular, non-coplanar two-planet problem

, 2009
We investigate the secular dynamics of a planetary system composed of the parent star and two massive planets in mutually inclined orbits. The dynamics are investigated in wide ranges of semi-major axes ratios (0.1-0.667), and planetary masses ratios (0 ...
Adams, Brouwer, Brumberg, Butler, Cezary Migaszewski, Fabrycky, Ferraz-Mello, Ferrer, Fischer, Fischer, Ford, Goździewski, Goździewski, Goździewski, Goździewski, Innanen, Ji, Khalil, Kinoshita, Kozai, Krasinsky, Krzysztof Goździewski, Laskar, Laskar, Lee, Libert, Libert, Libert, Lidov, Lidov, Markeev, Meyer, Michtchenko, Michtchenko, Michtchenko, Migaszewski, Migaszewski, Migaszewski, Miller, Morbidelli, Murray, Press, Rodríguez, Sokolskii, Thomas, Thommes, Veras, Veras, Wright   +48 more
core   +1 more source