Results 71 to 80 of about 225,144 (339)

Organics in comet 67P – a first comparative analysis of mass spectra from ROSINA–DFMS, COSAC and Ptolemy [PDF]

, 2017
The ESA Rosetta spacecraft followed comet 67P at a close distance for more than 2 yr. In addition, it deployed the lander Philae on to the surface of the comet.
A. Bieler, A. Morse, Balsiger, Biele, C.-Y. Tzou, Calmonte, Capaccioni, Cottin, F. Goesmann, Finzi, Fornasier, Fray, Goesmann, Goesmann, Graf, Grün, H. Balsiger, Huebner, Hässig, I. Wright, J. de Keyser, J.J. Berthelier, Kathrin Altwegg, Korth, Krüger, L. Le Roy, M. G. G. T Taylor, M. Rubin, M. Schuhmann, Meier, Mitchell, Morse, Morse, Nevejans, Quirico, Rubin, Rubin, S. Gasc, S.A. Fuselier, Stein, Stern, T. I. Gombosi, Thomas, U. Calmonte, Ulamec, Wright   +45 more
core   +3 more sources

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   +2 more sources

Dual‐Targeted Nanovesicles Induced Cancer Stem‐Like Cell Differentiation to Sensitize Hepatocellular Carcinoma Radiotherapy

Advanced Science, EarlyView.
The existence of Pin1 and Notch1 crosstalk is identified and verified in HCC, and the crucial function of this crosstalk in sustaining the aggressive phenotypes of CSCs and radioresistance. A biomimetic nanovesicle is now developed to block the crosstalk between Pin1 and Notch1 for inducing CSCs differentiation and sensitizing HCC radiotherapy ...
Hongmei Cao, Qian Wang, Yanan Niu, Shuxiang Wang, Haixue Jia, Dianyu Wang, Jinjian Liu, Wei Yuan, Lijun Yang, Jianfeng Liu   +9 more
wiley   +1 more source

Calibration of SAR Polarimetric Images by Covariance Matching Estimation Technique with Initial Search

Remote Sensing
To date, various methods have been proposed for calibrating polarimetric synthetic aperture radar (SAR) using distributed targets. Some studies have utilized the covariance matching estimation technique (Comet) for SAR data calibration.
Jingke Liu, Lin Liu, Xiaojie Zhou
doaj   +1 more source

Systematic satellite observations of the impact of aerosols from passive volcanic degassing on local cloud properties [PDF]

Atmospheric Chemistry and Physics, 2014
The impact of volcanic emissions, especially from passive degassing and minor explosions, is a source of uncertainty in estimations of aerosol indirect effects.
S. K. Ebmeier, A. M. Sayer, R. G. Grainger, T. A. Mather, E. Carboni   +4 more
doaj   +1 more source

Preservation of ALYREF Phase Separation Mitigates Doxorubicin‐Induced Cardiomyocyte DNA Damage and Cardiotoxicity

Advanced Science, EarlyView.
Binding of Doxorubicin to ALYREF disrupts its phase‐separated condensate and induces DNA damage and apoptosis in cardiomyocytes Abstract The clinical utility of the anticancer agent doxorubicin (DOX) is limited by its dose‐dependent cardiotoxicity.
Xinlu Gao, Yifu Shen, Zhihui Xiao, Zhenbo Han, Xu Liu, Ao Cai, Yanan Tian, Guang Lian, Wenya Ma, Yining Liu, Rui Gong, Hanjing Li, Xiuxiu Wang, Zhongyu Ren, Naufal Zagidullin, Lei Yu, Ye Tian, Yu Liu, Zhenwei Pan, Baofeng Yang, Benzhi Cai   +20 more
wiley   +1 more source

Are the main belt comets, comets? [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractWe present the visible spectrum of asteroid-comet transition object 133P/Elst-Pizarro (7968), the first member of the new population of objects called Main Belt Comets (Hsieh & Jewitt 2006). The spectrum was obtained with the 4.2m William Herschel Telescope at the “Roque de los Muchachos” observatory.
Humberto Campins, Javier Licandro
openaire   +2 more sources

APOL2 Stabilizes Ku80 to Confer NHEJ‐Mediated Radioresistance in Gastric Cancer

Advanced Science, EarlyView.
Radiotherapy resistance in gastric cancer (GC) is often mediated by enhanced DNA repair. APOL2 is found to promote NHEJ by stabilizing Ku80, conferring radioresistance. High APOL2 correlates with poor prognosis. Formononetin disrupts APOL2‐Ku80, restoring radiosensitivity, suggesting a novel therapeutic strategy.
Dan Zu, Qimei Bao, Hanyi He, Yuke Zhong, Mingcong Deng, Yangchan Hu, Chunkai Zhang, Chen Liang, Yixing Huang, Haidong Liu, Xiao Li, Yanhua He, Guoyan Luo, Weixin Wu, Fenghui Guan, Shengfeng Xu, Min Liu, Albino Bacolla, Ji Jing, Yian Du, John A. Tainer, Yin Shi, Zu Ye, Xiangdong Cheng   +23 more
wiley   +1 more source

Asteroids and Comets [PDF]

, 2015
Asteroids and comets are remnants from the era of Solar System formation over 4.5 billion years ago, and therefore allow us to address two fundamental questions in astronomy: what was the nature of our protoplanetary disk, and how did the process of planetary accretion occur?
Fernández, Y. R., Li, J. Y., Howell, E. S., Woodney, L. M.   +3 more
openaire   +3 more sources

CDH1 Orchestrates Anabolic Events to Promote Cell Cycle Initiation

Advanced Science, EarlyView.
Cell proliferation requires the integration of cell cycle and anabolic signals. G1‐phase regulator CDH1 coordinates anabolism through the CDH1‐VHL‐AARS2/HIF1α axis, while CDH1‐accumulated R5P is sensed by TKTL1 to facilitate CDH1 degradation and cell cycle initiation, constituting a CDH1‐centered regulatory circuit.
Yun‐Zi Mao, Jiao‐Jiao Zhang, Meng‐Qi You, Han Wang, Yan Lin, Yuan Fang, Hui‐Lu Zhang, Yuan‐Yuan Qu, Qian Zhou, Meng Wang, Gang Li, Zi‐Fan Guo, Meng Xu, Jie Liu, Peng‐Cheng Lin, Yi‐Yuan Yuan, Yu Kang, Shi‐Min Zhao, Wei Xu   +18 more
wiley   +1 more source