Results 51 to 60 of about 1,848,916 (203)

Phenotypic variability and genome-wide association studies in potato (Solanum tuberosum L.) for phosphorus efficiency

BMC Plant Biology
Background Potatoes require phosphorus (P) for growth, tuber production and starch quality, but their small and shallow root system limits the nutrient acquisition.
Mousumi Hazarika, Klaus J. Dehmer, Ralf Uptmoor, Mareike Kavka, Julian Kirchgesser, Doerte Harpke, Silvia Bachmann-Pfabe   +6 more
doaj   +1 more source

Impact of environmental drivers on ecosystem service-delivery of small garden trees in a temperate climate

Frontiers in Environmental Science
Green infrastructure has an increasingly important role in mitigating urban environmental concerns such as heat island effect, localised flooding, pollution and biodiversity loss.
Elisabeth K. Larsen, Tijana Blanusa, Tijana Blanusa, Rachael Tanner, Joseph Barker, Nick Dunn, Mark B. Gush   +6 more
doaj   +1 more source

Organizing and Indexing Photo Collections [PDF]

, 2012
Historical photo archives or collections can put an organization on the map and make it into a destination for patrons. Conversely, if not well organized and indexed, collections and archives can languish in obscurity and occupy valuable space and ...
Fortier, Rose
core   +1 more source

Toward a standardized quantitative and qualitative insect monitoring scheme

Ecology and Evolution, 2020
The number of insect species and insect abundances decreased severely during the past decades over major parts of Central Europe. Previous studies documented declines of species richness, abundances, shifts in species composition, and decreasing biomass ...
Axel Hausmann, Andreas H. Segerer, Thomas Greifenstein, Johannes Knubben, Jerôme Morinière, Vedran Bozicevic, Dieter Doczkal, Armin Günter, Werner Ulrich, Jan Christian Habel   +9 more
doaj   +1 more source

Collections Theft Response Procedures [PDF]

, 2001
Offers guidance for theft response and suggest actions to take before and after an ...
Laurie Sowd, Wilbur Faulk
core  

Positive definite collections of disks

, 2006
Let $Q(z,w)=-\prod_{k=1}^n [(z-a_k)(\bar{w}-\bar{a}_k)-R_k^2]$. M. Putinar and B. Gustafsson proved recently that the matrix $Q(a_i,a_j)$, $1\leq i,j\leq n$, is positive definite if disks $|z-a_i|
Tkachev, Vladimir
core   +1 more source

Approaches to estimating the universe of natural history collections data [PDF]

, 2010
This contribution explores the problem of recognizing and measuring the universe of specimen-level data existing in Natural History Collections around the world, in absence of a complete, world-wide census or register. Estimates of size seem necessary to
Ariño, Arturo H.
core   +4 more sources

A summer in Siberia: the travel and the collection itinerary to the mouth of the Ob River by the botanist and ethno-anthropologist Stéphen Sommier in 1880

Journal of Maps
Stéphen Sommier (1848–1922) was a renowned botanist, plant collector, ethnographer, geographer and photographer. He is best known for his scientific expeditions to Italy, Scandinavia and Russia.
Daniele Viciani, Lorella Dell’Olmo, Anna Bernardini, Anna Donatelli, Chiara Nepi, Maria Gloria Roselli, Lorenzo Lastrucci   +6 more
doaj   +1 more source

PhotoShape: Photorealistic Materials for Large-Scale Shape Collections

, 2018
Existing online 3D shape repositories contain thousands of 3D models but lack photorealistic appearance. We present an approach to automatically assign high-quality, realistic appearance models to large scale 3D shape collections.
Farhadi, Ali, Park, Keunhong, Rematas, Konstantinos, Seitz, Steven M.   +3 more
core   +1 more source

The paper mill crisis is a five-alarm fire for science: what can librarians do about it?

Insights: The UKSG Journal
The paper mill crisis, which is polluting the scholarly literature with fake papers, has led to record-breaking article retractions and continues to erode trust in science.
Curtis Brundy, Joel B. Thornton
doaj   +1 more source