Results 71 to 80 of about 4,657 (224)

A Large Outburst, Coma Asymmetries, and the Color of Comet 243P/NEAT

The Planetary Science Journal
Water ice is a fundamental building material of comets and other bodies in the outer solar system. Yet the properties of cometary water ice are challenging to study, due to its volatility and the typical distances at which comets are observed.
Michael S. P. Kelley, Silvia Protopapa, Dennis Bodewits, Aren N. Heinze, Youssef Moulane, Quanzhi Ye, Bryce Bolin, Simon Conseil, Tony L. Farnham, Lori Feaga, Xing Gao, Chih-Hao Hsia, Emmanuel Jehin, Shrinivas R. Kulkarni, Russ R. Laher, Tim Lister, Frank J. Masci, Josiah Purdum, Bin Yang   +18 more
doaj   +1 more source

Deubiquitinase USP38 Stabilizes PLK1 Expression to Boost DNA Damage Repair in Ovarian Cancer

The Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT Ovarian cancer (OC) is one of the most prevalent and severe gynecological malignant tumors. DNA damage repair (DDR) is essential in maintaining genome stability. This study aims to investigate the effects and mechanisms of USP38 and PLK1 on DNA damage repair and malignant behavior in OC cells.
Yuan Ma, Ying Li, Kai‐Li Li
wiley   +1 more source

Application of Non‐Isothermal Network Theory With Curved‐Channel Element Characteristics to Predict Melt Conveying in High‐Performance Single‐Screw Extruders

Journal of Polymer Science, EarlyView.
This study presents a fast and accurate calculation tool to predict conveying of polymer melts in single‐screw extruders. Integrating generalized sub‐models into network theory allows to represent the complex screw shapes and material behavior more realistically. Tests on an industrial extruder show close agreement with experiments, outperforming older
Daniel Herzog, Wolfgang Roland, Christian Marschik, Gerald Berger‐Weber   +3 more
wiley   +1 more source

A Disintegrating Rocky Planet with Prominent Comet-like Tails around a Bright Star

The Astrophysical Journal Letters
We report the discovery of BD+05 4868 Ab, a transiting exoplanet orbiting a bright ( V = 10.16) K-dwarf (TIC 466376085) with a period of 1.27 days.
Marc Hon, Saul Rappaport, Avi Shporer, Andrew Vanderburg, Karen A. Collins, Cristilyn N. Watkins, Richard P. Schwarz, Khalid Barkaoui, Samuel W. Yee, Joshua N. Winn, Alex S. Polanski, Emily A. Gilbert, David R. Ciardi, Jeroen Audenaert, William Fong, Jack Haviland, Katharine Hesse, Daniel Muthukrishna, Glen Petitpas, Ellie Hadjiyska Schmelzer, Norio Narita, Akihiko Fukui, Sara Seager, George R. Ricker   +23 more
doaj   +1 more source

Effects of monomer shape on the formation of aggregates from a power law monomer distribution

New Journal of Physics, 2013
The coagulation of dust aggregates is an important process in many physical systems such as the Earth's upper atmosphere, comet tails and protoplanetary discs.
J Perry, J Kimery, L S Matthews, T W Hyde   +3 more
doaj   +1 more source

Baicalein Sensitizes Radioresistant BT549 and MCF7‐R Breast Cancer Cells by Modulating Rac1 Signaling

Phytotherapy Research, EarlyView.
ABSTRACT Radioresistance remains a key barrier in breast cancer (BC) treatment. Baicalein, a flavonoid from Scutellaria baicalensis, has shown potential to enhance radiosensitivity. This study investigates its efficacy and mechanism in radioresistant BC models. Radioresistant BC cell models were established via fractionated irradiation and validated by
Zitong Zhao, Zhangyun Li, Quanzhou Peng, Shuqun Zhang   +3 more
wiley   +1 more source

Acción protectora de la melatonina sobre células mononucleares de sangre periférica humana sometidas a radiación gamma Co60

Universitas Scientiarum, 2009
Protective action of melatonin on human peripheral blood mononuclear cells exposed to gamma radiation Co60. Objective: toevaluate the protective effect of melatonin on peripheral blood mononuclear cells (PBMCs) exposed in vitro to ionizing radiation ...
Martha Mesa-Villanueva, Magaly Rueda-Martínez, Ruby Zayas-Camacho, Diana Sicard-Suárez   +3 more
doaj  

Tails of a Recent Comet

, 2010
Drain away the earth's oceans and a global pattern of great ridges appears. Adjacent to these continental and undersea mountain ranges are layers of silt and clay, so thick that they fill the gaps between ridges, creating extensive plateaus. Ranging across this planet's higher latitudes are thousands of tiny replicas of these ridge systems. These esker
Zysman, Milton, Wallace, Frank
openaire   +2 more sources

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

The Role of Interfacial Energetics and Defects on The Efficiency of Tin Perovskite Solar Cells

Small, EarlyView.
ABSTRACT Tin perovskites are emerging as a sustainable alternative to lead‐based photovoltaics, yet their efficiency remains limited by energy‐level mismatch and intrinsic instability from tin oxidation. Progress is further hindered by inconsistent electrical behavior, obscuring the true bottlenecks of device performance.
Mahmoud H. Aldamasy, Artem Musiienko, Marin Rusu, Davide Regaldo, Zafar Iqbal, Shengnan Zuo, Hannes Hampel, Chiara Frasca, Ahmed G. Bedir, Guixiang Li, Giuseppe Nasti, Meng Li, Jorge Pascual, Qiong Wang, Thomas Unold, Antonio Abate   +15 more
wiley   +1 more source