Results 21 to 30 of about 460,908 (314)

Annotations in data streams [PDF]

, 2014
The central goal of data stream algorithms is to process massive streams of data using sublinear storage space. Motivated by work in the database community on outsourcing database and data stream processing, we ask whether the space usage of such ...
McGregor, Andrew, Thaler, Justin, Chakrabarti, Amit, Cormode, Graham   +3 more
core   +1 more source

Development and validation of an alternative method for ergosterol determination in alder leaves using liquid-liquid extraction and LC-MS/MS after saponification

MethodsX
Ergosterol is widely used as proxy for the estimation of leaf litter associated fungal biomass. According to a common textbook method, ergosterol can be extracted from plant tissue with methanolic potassium hydroxide followed by purification with solid ...
Björn Kusebauch, Stefan Bader, Steffen Carl   +2 more
doaj   +1 more source

Valuable habitats of protected areas in southern Poland – a source of rare and poorly known diatom species

Acta Societatis Botanicorum Poloniae, 2019
The peatbogs and natural upper sections of streams in national parks in southeastern Poland represent unique study areas for research on freshwater diatom diversity.
Teresa Noga
doaj   +1 more source

Veronico beccabungae-Mimuletum guttati, a new plant community in Slovakia

Acta Societatis Botanicorum Poloniae, 2018
Vegetation with high coverage by the alien species Mimulus guttatus was studied in the hilly regions of central Slovakia in 2015 and 2016. The floristic composition of these stands was recorded in ten phytosociological relevés corresponding to the ...
Richard Hrivnák, Michal Slezák, Karol Marhold   +2 more
doaj   +1 more source

Suitability Assessment of Fish Habitat in a Data-Scarce River

Hydrology, 2022
Assessing fish habitat suitability in a data-scarce tidal river is often challenging due to the absence of continuous water quantity and quality records.
Aysha Akter, Md. Redwoan Toukir, Ahammed Dayem   +2 more
doaj   +1 more source

Lower bounds for multi-pass processing of multiple data streams [PDF]

, 2009
This paper gives a brief overview of computation models for data stream processing, and it introduces a new model for multi-pass processing of multiple streams, the so-called mp2s-automata.
Schweikardt, Nicole
core   +1 more source

Long term changes in water areas and wetlands in an intensively farmed landscape: A case study from the Czech Republic

European Countryside, 2017
Krajina České republiky v současnosti čelí nebezpečí sucha, které je způsobeno mnoha faktory. Mezi ně patří změny krajiny a krajinného pokryvu. V článku jsou sledovány změny vodních a mokřadních ploch a délky vodních toků na podkladě starých vojenských ...
Šantrůčková Markéta, Demková Katarína, Weber Martin, Lipský Zdeněk, Dostálek Jiří   +4 more
doaj   +1 more source

A ocorrência de fluxos no perfil vertical do vento na baixa atmosfera e seu efeito na intensidade do índice "K" The occurrence of streams in the lower-atmosphere vertical wind profile and of their effect to intensity of the "K" index

Revista Brasileira de Meteorologia, 2007
Neste estudo objetivou-se caracterizar a influência dos fluxos/Jatos de Nível Baixo (JNB) nos níveis de 850 e 950 hPa com o índice "K". O mecanismo associado aos fluxos/JNB realiza um transporte de calor e vapor de água, aumentando o conteúdo de umidade ...
Cleber Souza Corrêa
doaj   +1 more source

Influence of land use changes on water chemistry in streams in the State of São Paulo, southeast Brazil

Anais da Academia Brasileira de Ciências, 2012
Streamwater is affected by several processes in the watershed including anthropogenic activities that result in changes in water quality as well as in the functioning of these stream ecosystems.
Daniela M.L. Silva, Plínio B. Camargo, William H. Mcdowell, Ivan Vieira, Marcos S.M.B. Salomão, Luiz A. Martinelli   +5 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source