Results 91 to 100 of about 5,178,293 (354)

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Evaluation of Spectral Indices and Global Thresholding Methods for the Automatic Extraction of Built-Up Areas: An Application to a Semi-Arid Climate Using Landsat 8 Imagery

open access: yesUrban Science
The rapid expansion of built-up areas (BUAs) requires effective spatial and temporal monitoring, being a crucial practice for urban land use planning, resource allocation, and environmental studies, and spectral indices (SIs) can provide efficiency and ...
Yassine Harrak   +2 more
doaj   +1 more source

Non-minimal inflation and the running spectral index [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2006
9 pages ...
openaire   +2 more sources

The far-infrared/radio correlation and radio spectral index of galaxies in the SFR–M∗ plane up to z~2 [PDF]

open access: yes, 2014
We study the evolution of the radio spectral index and far-infrared/radio correlation (FRC) across the star-formation rate – stellar masse (i.e. SFR–M∗) plane up to z ~ 2.
B. Magnelli   +26 more
semanticscholar   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

Hybrid document indexing with spectral embedding [PDF]

open access: yesHuman Language Technologies 2007: The Conference of the North American Chapter of the Association for Computational Linguistics; Companion Volume, Short Papers on XX - NAACL '07, 2007
Document representation has a large impact on the performance of document retrieval and clustering algorithms. We propose a hybrid document indexing scheme that combines the traditional bag-of-words representation with spectral embedding. This method accounts for the specifics of the document collection and also uses semantic similarity information ...
Irina Matveeva, Gina-Anne Levow
openaire   +1 more source

A novel built-up spectral index developed by using multiobjective particle-swarm-optimization technique

open access: yes, 2016
In this study, we propose a novel built-up spectral index which was developed by using particle-swarm-optimization (PSO) technique for Worldview-2 images.
M. I. Sameen, B. Pradhan
semanticscholar   +1 more source

Spectral Index for Quantifying Leaf Area Index of Winter Wheat by Field Hyperspectral Measurements: A Case Study in Gifu Prefecture, Central Japan

open access: yesRemote Sensing, 2015
Timely and nondestructive monitoring of leaf area index (LAI) using remote sensing techniques is crucial for precise and efficient management of crops. In this paper, a new spectral index (SI) for estimating LAI of winter wheat (Triticum aestivum L.) is ...
Shinya Tanaka   +5 more
semanticscholar   +1 more source

LOW ENERGY SPECTRAL INDEX AND Ep EVOLUTION OF QUASI-THERMAL PHOTOSPHERE EMISSION OF GAMMA-RAY BURSTS [PDF]

open access: yes, 2014
Recent observations by the Fermi satellite suggest that a photosphere emission component is contributing to the observed spectrum of many gamma-ray bursts (GRBs). One important question is whether the photosphere component can interpret the typical 'Band'
W. Deng, Bing Zhang
semanticscholar   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

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