Results 101 to 110 of about 5,706,267 (307)

An Infrared Imaging Study of the Bipolar Proto-Planetary Nebula IRAS 16594-4656

, 2006
High-resolution mid-infrared images have been obtained in N-band and Q-band for the proto-planetary nebula IRAS 16594-4656. A bright equatorial torus and a pair of bipolar lobes can clearly be seen in the infrared images. The torus appears thinner at the
Bruce J. Hrivnak, Kate Y. L. Su, Kevin Volk, Sun Kwok, Van de Steene G. C., Van de Steene G. C.   +5 more
core   +2 more sources

The kinematics of the quadrupolar nebula M1-75 and the identification of its central star [PDF]

, 2010
The link between the shaping of bipolar planetary nebulae and their central stars is still poorly understood. The kinematics and shaping of the multipolar nebula M 1-75 are hereby investigated, and the location and nature of its central star are briefly ...
Beckman, J. E., Benn, C. R., Carignan, C., Corradi, R. L. M., Fathi, K., Giammanco, C., Hernandez, O., Jiménez-Luján, F., Jones, D., Rodríguez-Gil, P., Rubio-Díez, M. M., Santander-García, M.   +11 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Three-point functions in a N $$ \mathcal{N} $$ = 2 superconformal gauge theory and their strong-coupling limit

Journal of High Energy Physics, 2022
We study the 3-point functions of single-trace scalar operators in a four-dimensional N $$ \mathcal{N} $$ = 2 SYM theory with gauge group SU(N) and matter in the symmetric plus anti-symmetric representation, which has a vanishing β-function.
M. Billò, M. Frau, A. Lerda, A. Pini, P. Vallarino   +4 more
doaj   +1 more source

Multi‐omics and low‐input proteomics profiling reveals dynamic regulation driving pluripotency initiation in early mouse embryos

FEBS Open Bio, EarlyView.
Mouse pre‐implantation development involves a transition from totipotency to pluripotency. Integrating transcriptomics, epigenetic profiling, low‐input proteomics and functional assays, we show that eight‐cell embryos retain residual totipotency features, whereas cytoskeletal remodeling regulated by the ubiquitin‐proteasome system drives progression ...
Wanqiong Li, Xi Xiao, Lingbin Qi, Chanyi Li, Sirui Song, Jiaying Qin, Zhigang Xue, Jinfeng Xue, Huaifang Li   +8 more
wiley   +1 more source

A distance estimate based on angular expansion for the planetary nebula NGC 6881

, 2011
In this paper, we report on high angular resolution radio observations of the planetary nebula NGC 6881 obtained with the Very Large Array at a wavelength of 6 cm.
Avni, Cahn, Cappa, Christianto, Daniel Tafoya, Fich, Guerrero, Guerrero, Guzmán, Guzmán, Gómez, Hajian, Hajian, Hajian, Kawamura, Kwok, Laurent Loinard, Lizette Guzmán-Ramírez, Lozinskaya, Masson, Masson, Mellema, Palen, Press, Ramos-Larios, Reed, Robinson, Schneider, Wall, Weinberger, Yolanda Gómez, Zhang, Zijlstra   +32 more
core   +1 more source

Autonomous proximity awareness of bluetooth devices [PDF]

, 2005
This paper focuses on designing autonomous device discovery algorithms for Bluetooth networks. We first extend the conventional asymmetric Bluetooth link model to three point-to-point symmetric link models.
Liu, C, Yeung, KL
core   +1 more source

Accelerated Progression of Gait Impairment in Parkinson's Disease and REM Sleep Without Atonia

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective People with Parkinson's disease (PD) and rapid eye movement (REM) sleep without atonia (RSWA) often have more severe gait disturbances compared to PD without RSWA. The association between the presence and expression of RSWA and the rate of progression of gait impairment in PD is unknown.
Sommer L. Amundsen‐Huffmaster, Jae Woo Chung, Maria E. Linn‐Evans, Matthew N. Petrucci, Chiahao Lu, Destiny J. Weaver, Joshua De Kam, Scott E. Cooper, Paul J. Tuite, Aleksandar Videnovic, Michael J. Howell, Colum D. MacKinnon   +11 more
wiley   +1 more source

Fixed point theorems for d-complete topological spaces I

International Journal of Mathematics and Mathematical Sciences, 1992
Generalizations of Banach's fixed point theorem are proved for a large class of non-metric spaces. These include d-complete symmetric (semi-metric) spaces and complete quasi-metric spaces.
Troy L. Hicks
doaj   +1 more source

Fixed Point Results on Δ-Symmetric Quasi-Metric Space via Simulation Function with an Application to Ulam Stability

Mathematics, 2018
In this paper, in the setting of Δ -symmetric quasi-metric spaces, the existence and uniqueness of a fixed point of certain operators are scrutinized carefully by using simulation functions. The most interesting side of such operators is that they do not
Badr Alqahtani, A. Fulga, E. Karapınar
semanticscholar   +1 more source