Results 41 to 50 of about 488,051 (209)

Feeding ducks, bacterial chemotaxis, and the Gini index

open access: yes, 2015
Classic experiments on the distribution of ducks around separated food sources found consistency with the `ideal free' distribution in which the local population is proportional to the local supply rate.
Goldstein, Raymond E.   +1 more
core   +1 more source

Targeting Nutrient Uptake Mechanisms in Plasmodium

open access: yesCurrent Drug Targets, 2007
The proliferation of the intraerythrocytic malaria parasite is dependent on the uptake from the blood plasma, and from the cytoplasm of the host cell, of a range of essential nutrients. These compounds are taken up into the parasitised cell via a combination of constitutively active endogenous host cell transporters and new parasite-induced ...
Kirk, Kiaran, Saliba, Kevin
openaire   +3 more sources

Reducing nutrient loss in drainage from tomato grown in free-draining substrate in greenhouses using dynamic nutrient management

open access: yesAgricultural Water Management, 2023
Substrate-grown crops represent approximately 10% of the cropping area of intensive greenhouse horticulture in southern Spain. The vast majority are free draining, in that they do not collect and recirculate drainage.
J. Cedeño   +4 more
doaj   +1 more source

Can uptake length in strams be determined by nutrient addition experiments? Results from an interbiome comparison study [PDF]

open access: yes, 2002
Nutrient uptake length is an important parnmeter tor quantifying nutrient cycling in streams. Although nutrient tracer additions are the preierred method for measuring uptake length under ambient nutrient concentrations, short-term nutrient addition ...
Bowden, William B.   +11 more
core   +2 more sources

QUEFTS Model-based Estimation of the Nutrient Requirements and Fertilizer Recommendation for Chinese Onion

open access: yesHortScience, 2022
Accurate estimation of the nutrient requirements of Chinese onion is essential to increase its nutrient utilization efficiency and yield. In this study, the yield and nutrient uptake data were collected from major Chinese onion growing regions during ...
Jianlin Wei   +8 more
doaj   +1 more source

Simulating Growth and Development of Tomato Crop [PDF]

open access: yes
Crop models are powerful tools to test hypotheses, synthesize and convey knowledge, describe and understand complex systems and compare different scenarios.
Elings, A.   +3 more
core   +2 more sources

Intestinal macromolecular transport supporting adaptive immunity [PDF]

open access: yes, 2019
The gastrointestinal tract performs opposing functions of nutrient absorption, barrier maintenance, and the delivery of luminal substances for the appropriate induction of tolerogenic or protective adaptive immunity.
Kulkarni, Devesha H, Newberry, Rodney D
core   +2 more sources

Derivation of a dual porosity model for the uptake of nutrients by root hairs [PDF]

open access: yes, 2010
Root hairs are thought to play an important role in mediating nutrient uptake by plants. We develop a mathematical model for the nutrient transport and uptake in the root hair zone of a single root in the soil.
Roose, Tiina, Zygalakis, K. C.
core  

The effect of Intercropping on the Deep Root Development and Nutrient Uptake in a Sugar Beet – Chicory Mixture. [PDF]

open access: yes, 2018
Sustaining an increasing human population with decreasing soil resources is a great challenge of the 21st century. Suboptimal availability of water and N are primary limitations to plant growth in the low-input agroecosystems in developing nations ...
Clement, Corentin   +4 more
core  

Nutrient uptake controls and limitation dynamics in north-east Greenland streams

open access: yesPolar Research, 2018
Permafrost thaw induced by climate change will cause increased release of nutrients and organic matter from the active layer to Arctic streams and, with increased water temperature, will potentially enhance algal biomass and nutrient uptake.
Catherine L. Docherty   +4 more
doaj   +1 more source

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