Results 61 to 70 of about 293,183 (281)

Coronal Holes in Global Complexes of Activity

Advances in Astronomy, 2015
We propose a new concept that considers the global complexes of activity as a combination of global and local fields. Traditionally, the complexes of activity have been identified from observations of active regions (ARs). Here, we show that a complex of
Vladimir N. Obridko, Bertha D. Shelting
doaj   +1 more source

Are subsurface flows and coronal holes related?

, 2012
International audienceWe study synoptic maps of solar subsurface flows covering six Carrington rotations (2050 to 2055). The subsurface flows are determined with a ring-diagram analysis of GONG high-resolution Doppler data.
Harra, Louise K., González Hernández, J. I., van Driel-Gesztelyi, Lidia, Howe, R., Baker, Deborah, Komm, Rudolf W.   +5 more
core   +1 more source

Nrsn1–Smarcc1 Coupling Regulates Neural Stem Cell Differentiation and Chronic‐phase Recovery After Ischemic Stroke

Advanced Science, EarlyView.
In the post‐stroke brain, Foxa2 induces the transcriptional upregulation of Nrsn1 in NSCs. Nrsn1 functionally couples with Smarcc1, modulating its nuclear availability and protein abundance, thereby influencing Smarcc1‐associated regulatory programs linked to neuronal lineage commitment. Through this coupling, Nrsn1 promotes the differentiation of NSCs
Ruolin Zhang, Chang Liu, Yuneng Zhou, Kaichen Zhao, Muyang Li, Bingcheng Cai, Ying Wang, Zhiyuan Yuan, Zhaoxin Liu, Zilong Yuan, Yao Xiao, Peiyang Zhou, Ke Shui, Wendai Bao, Min Zhang, Jun Qin, Jun Chen, Xin Yang, Zhiqiang Dong   +18 more
wiley   +1 more source

What Determines the Brightness of the Magnetically Open Solar Corona?: Insights from Three-dimensional Radiative Magnetohydrodynamic Simulations and Observations

The Astrophysical Journal
We investigate the relationship between solar coronal holes and open-field regions using three-dimensional radiative magnetohydrodynamic simulations combined with remote-sensing observations from the Solar Dynamics Observatory (SDO).
Haruhisa Iijima
doaj   +1 more source

How did the solar wind structure change around the solar maximum? From interplanetary scintillation observation [PDF]

Annales Geophysicae, 2003
Observations from the second Ulysses fast latitude scan show that the global structure of solar wind near solar maximum is much more complex than at solar minimum.
K. Fujiki, M. Kojima, M. Tokumaru, T. Ohmi, A. Yokobe, A. Yokobe, K. Hayashi, D. J. McComas, H. A. Elliott   +8 more
doaj   +1 more source

Multi-Thermal Segmentation of Solar Coronal Holes

, 2016
Here we present a poster describing a new multi-thermal segmentation method, to extract coronal boundaries from that of the quiet Sun.Our method uses 3 wavebands (171A, 193A and 211A) to exctract coronal holes and their ...
Peter Gallagher (99110), Tadhg Garton (1375854)   +1 more
core   +1 more source

An Injectable Metal‐Drug Supramolecular Condensate Enables Radiosensitization and Systemic Antitumor Immunity for Post‐Surgical Osteosarcoma Therapy

Advanced Science, EarlyView.
This work designed an injectable metal‐drug supramolecular condensate formed from hafnium ions and alendronate (Hf‐ALN) and loaded with the COX‐2 inhibitor celecoxib (CXB) for synergistic radioimmunotherapy of postoperative osteosarcoma. Mechanistically, upon X‐ray irradiation, Hf enhances radiation energy deposition, ROS generation, and DNA damage ...
Tianhua Xiao, Zunlei Gong, Chuke Chen, Hui Yu, Yu Cai, Can Liu, Hongkai Huang, Ying Li, Jinyuan Guan, Le Wang, Chengyun Ning, Guoxin Tan, Lei Zhou   +12 more
wiley   +1 more source

Decoding the Neural Circuit Underlying Context‐Cue Association in Retrieval of Morphine Reward Memory

Advanced Science, EarlyView.
Contextual cues recruit the glutamatergic vCA1–dmPFC pathway to retrieve morphine reward memory by reshaping cell‐type‐specific prefrontal microcircuit activity. Distinct regulation of PV+ and SST+ interneurons defines this hippocampal–prefrontal mechanism.
Zhifeng Shi, Guangying Li, Qian Yang, Rusun Liu, Linghan Gu, Mingmei Wang, John L. Waddington, Fuhai Ji, Xuechu Zhen   +8 more
wiley   +1 more source

Coronal Holes

, 2008
Coronal holes are regions of low-density plasma on the Sun that have magnetic fields that open freely into interplanetary space. During times of low solar activity, coronal holes cover the north and south polar caps of the Sun. During more active periods,

core   +1 more source

The spatial relationship between active regions and coronal holes and the occurrence of intense geomagnetic storms throughout the solar activity cycle [PDF]

Annales Geophysicae, 1998
We study the annual frequency of occurrence of intense geomagnetic storms (Dst < –100 nT) throughout the solar activity cycle for the last three cycles and find that it shows different structures.
S. Bravo, J. A. L. Cruz-Abeyro, D. Rojas
doaj   +1 more source