Results 81 to 90 of about 834,727 (299)

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

Journal of Cosmology and Astroparticle Physics, 2006
9 pages ...
openaire   +2 more sources

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

FEBS 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, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Mapping Natural Populus euphratica Forests in the Mainstream of the Tarim River Using Spaceborne Imagery and Google Earth Engine

Remote Sensing
Populus euphratica is a unique constructive tree species within riparian desert areas that is essential for maintaining oasis ecosystem stability. The Tarim River Basin contains the most densely distributed population of P.
Jiawei Zou, Hao Li, Chao Ding, Suhong Liu, Qingdong Shi   +4 more
doaj   +1 more source

Developing a New Method to Identify Flowering Dynamics of Rapeseed Using Landsat 8 and Sentinel-1/2

Remote Sensing, 2020
Identifying the rapeseed (Brassica napus L.) flowering dates are important for planting area estimation, growth monitoring, and yield estimation. However, there is currently a lack of data on rapeseed flowering dates at the parcel scale. In this study, a
Jichong Han, Zhao Zhang, Juan Cao
doaj   +1 more source

Size dependence of solar X-ray flare properties [PDF]

, 2005
Non-thermal and thermal parameters of 85 solar flares of GOES class B1 to M6 (background subtracted classes A1 to M6) have been compared to each other.
A. O. Benz, Benz, Dougherty, Dulk, Feldman, Garcia, Grigis, Gronenschild, Hudson, Isobe, Kahler, Kahler, Krucker, Lin, Lin, Lu, Lu, M. Battaglia, Matthews, P. C. Grigis, Parks, Saint-Hilaire, Saint-Hilaire, Shibata, Simnett, Smith   +25 more
core   +3 more sources

Hybrid document indexing with spectral embedding [PDF]

Human 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

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
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

Urban 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, Ahmed Rachid, Rahim Aguejdad   +2 more
doaj   +1 more source

Retreat of Greenwich, Livingston, Robert and Snow Islands glaciers, Antarctica, between 1956 and 2023 [PDF]

Anais da Academia Brasileira de Ciências
Glaciers are sensitive to environmental climatic conditions and show their variability over time. This study investigates the environmental characteristics and variation in glacial cover of the Greenwich, Livingston, Robert and Snow islands, Antarctica ...
DANIELLE D. SOFFIATTI, KÁTIA K. ROSA, JÚLIA L. LORENZ, FILIPE LINDAU, CARINA PETSCH, FRANCISCO E. AQUINO, JEFFERSON C. SIMÕES   +6 more
doaj   +1 more source

Land cover classification using multi-temporal MERIS vegetation indices [PDF]

, 2007
The spectral, spatial, and temporal resolutions of Envisat's Medium Resolution Imaging Spectrometer (MERIS) data are attractive for regional- to global-scale land cover mapping.
A. Mathur, Baret F., Benedetti R., Clark R. N., Clevers J. G. P. W., G. M. Foody, Gaston G. G., Gobron N., Halldorsson G. H., J. Dash, J. W. Chipman, Lillesand T. M., Mather P. M., P. J. Curran, Peterson D. L., Richardson A. L., Smith G. M., Smith P. M., T. M. Lillesand, Wilkinson G. G.   +19 more
core   +1 more source