Results 71 to 80 of about 25,279 (299)

The Interstellar Heritage of Comets

The Astronomical Journal
Comets have similar compositions to interstellar medium ices, suggesting at least some of their molecules may be inherited from an earlier stage of evolution.
Karen Willacy, Liton Majumdar, Boncho Bonev, Erika Gibb, Neil Dello Russo, Michael DiSanti, Ronald J. Vervack Jr., Nathan X. Roth   +7 more
doaj   +1 more source

The Origin of Comets

, 1964
Astronomers find evidence that comets may have been formed in about the same region of the solar system as ...
Staff,
core  

History of the dust released by comets [PDF]

, 1976
The Finson-Brobstein theory is used to examine production and history of dust released from periodic comets and to compare dust size distribution in relation to the Zodiacal cloud.
Jambor, B. J.
core  

Alkylating Agent–Induced FANCL Impairment Damages Pulmonary Arterial, Venous, and Microvascular Endothelial Cells and Predisposes to PAH/PVOD

Advanced Science, EarlyView.
This study establishes a novel cisplatin‐induced rat model of PAH/PVOD and identifies a conserved mechanistic axis—FANCL impairment, DNA damage accumulation, and endothelial dysfunction—triggered by cisplatin or mitomycin C across pulmonary arteries, veins, and microvessels.
Shiyun Liu, Yufei Sun, Xinlei Wu, Haixia Chen, Shaocong Mo, Zichong Li, Yiwei Gong, Xiaoqian Shan, Yuanqi Li, Yaru Guan, Junqi Zhu, Han Yan, Min Du, Feng Wei, Peixin Ou, Ziyi Wang, Chenting Zhang, Lei Xu, Wenju Lu, Jian Wang, Kai Yang   +20 more
wiley   +1 more source

MPP8 Facilitates DNA DSB Repair via NHEJ to Promote Chemoresistance of TNBC Independent of Methyl‐H3K9 Binding

Advanced Science, EarlyView.
Chemoresistance is often linked to elevated DNA repair. MPP8 is found to promote breast cancer chemoresistance as a novel NHEJ accessory factor independent of its epigenetic functions. Through multiple protein interactions, MPP8 facilitates association of DNAPK and ligase complexes to promote DNA repair progression.
Rupa Kumari, Jia Fang
wiley   +1 more source

Lactate‐H3K18la‐RPL11 Axis Drives Gemcitabine Resistance in Pancreatic Cancer by Integrating Protein Synthesis and DNA Damage Repair

Advanced Science, EarlyView.
A lactate‐H3K18la epigenetic axis upregulates RPL11 to drive gemcitabine resistance in pancreatic cancer. RPL11 orchestrates chemoresistance through a dual, compartmentalized role: enhancing cytoplasmic protein synthesis via EEF1A1 stabilization and promoting nuclear DNA damage repair by co‐activating PARP14, thus ensuring robust cell survival ...
Lijun Zhao, Jianzhong Cao, Wenyue Liu, Xuyun Li, Haolin Zhang, Xiaofang Zhang, Shiyang Shi, Huilong Yin, Junjie Li, Angang Yang, Rui Zhang   +10 more
wiley   +1 more source

Narrow passband imagery of comets [PDF]

, 1981
During an emission-line survey of the Milky Way, Comet West was accidently imaged through four different narrow passbands with a wide-field, image-intensified camera. Three passbands recorded very similar head plus tail structure.
Gull, T. R.
core  

The Great Comet and Schmidt's Comet [PDF]

Nature, 1882
THERE can be no doubt of the elongation of the nucleus of the Great Comet in the direction of the axis of the tail, in which direction it is three times as long as in a direction at right angles thereto.
openaire   +1 more source

Magnetoelectric Multiferroics for the Next‐Generation Ultralow‐Power Electronics

Advanced Science, EarlyView.
Magnetoelectric coupling provides a unifying route from electric‐field control of magnetic order to non‐volatile MeRAM, MESO logic, and emerging antiferromagnetic and magnonic devices. By connecting switching physics with device benchmarks, material platforms, and integration strategies, distinctive technological opportunities are identified alongside ...
Yang Liu, Yunlong Sun, Hao Luo, Duoduo Zhao, Yuhan Zeng, Xuzihan Zhang, Zhewei Liu, Hao Peng, Zhijing Zhang, Jack Yang, Ji Zhang, Danyang Wang, Junjie Shi, Sean Li   +13 more
wiley   +1 more source

Oort Cloud Comets: Perturbations Due to the Passage of Gliese 710

Universe
The outermost region of the Solar System is called the Oort cloud, which is the Solar System’s reservoir of long-period comets that extends to distances up to 200,000 au from the Sun.
Elke Pilat-Lohinger, Maximilian Zimmermann, Birgit Loibnegger   +2 more
doaj   +1 more source