Results 171 to 180 of about 5,714,372 (219)

Effects of microplastics and glyphosate on growth rate, morphological plasticity, photosynthesis, and oxidative stress in the aquatic species Salvinia cucullata.

Environmental Pollution, 2021
Glyphosate and microplastics are widely found in marine, terrestrial, and freshwater environments due to their globally widespread application. Further, they have proved to have specific ecotoxicity effects on aquatic plants.
Hongwei Yu, Jianfeng Peng, Xiaofeng Cao, Yajun Wang, Zhiqiang Zhang, Yan Xu, Weixiao Qi   +6 more
semanticscholar   +1 more source

Terminology of Relative Growth–Rates

Nature, 1941
IT is generally agreed that the study of the rates of growth of parts of organisms in relation to the rates of growth of the wholes or of other parts is one of the most fruitful ways of advancing our knowledge of ontogenetic development. But these biological processes have stable end–results.
JULIAN S. HUXLEY, JOSEPH NEEDHAM, I. MICHAEL LERNER   +2 more
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Relative growth rates

Resonance, 2007
If several objects grow with time the one with the highest rate of growth will dominate the rest over time. In this article this is discussed for three cases: when the number of objects is finite, countably infinite and a continuum.
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Relative growth rates and the grazing optimization hypothesis

Oecologia, 1981
A mathematical analysis of the changes in plant relative growth rates necessary to increase aboveground production following grazing was conducted. The equation derived gives an isoline where production of a grazed and ungrazed plant will be the same. The equation has four variables (mean shoot relative growth rate, change in relative growth rate after
D W, Hilbert, D M, Swift, J K, Detling, M I, Dyer   +3 more
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Relative Growth Rates: a Critique

South African Forestry Journal, 1995
SYNOPSIS Forest researchers frequently use mean relative growth rates to compare growth of seedlings that differ in initial size. Reasons for using the technique include: 1) to eliminate any size-related growth differences, and 2) to determine which seedlings are inherently more “efficient.” Although this technique is based on the theory that tree ...
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How to optimize lichen relative growth rates in growth cabinets

The Lichenologist, 2016
AbstractIn order to improve growth chamber protocols for lichens, we tested the effect of 1) wet filter paper versus self-drained nets as a substratum for lichens, and 2) gradual versus abrupt transitions between dark and light periods. For Lobaria pulmonaria (L.) Hoffm.
Yngvar GAUSLAA, Md Azharul ALAM, Knut Asbjørn SOLHAUG   +2 more
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Controlling Relative Fundamental Crystal Growth Rates in Silicalite:  AFM Observation

Journal of the American Chemical Society, 2007
A detailed atomic force microscopy study has been performed on the open-framework, microporous material silicalite. Emphasis has been placed on determining the effect of supersaturation on the crystal growth process. The relative rates of fundamental crystal growth processes can be substantially altered by tuning the supersaturation. In this manner, it
Meza, L. Itzel, Anderson, Michael W., Agger, Jonathan R., Cundy, Colin S., Chong, Chin B., Plaisted, Richard J.   +5 more
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Relative growth rates

1990
Called an ‘efficiency index’ by V. H. Blackman, RGR expresses growth in terms of a rate of increase in size per unit of size. This allows more equitable comparisons than an absolute growth rate. Normally, RGR deals with total dry weight, but other measures of size may be used (see next entry).
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Growth, relative prices, and exchange rates

Economics Letters, 1982
Abstract Using the framework of the monetary (or asset market) approach to the exchange rate it is demonstrated that if growth alters relative prices the growing country's currency may depreciate rather than appreciate as suggested by Mundell.
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Relative growth and nutrient accumulation rates for tobacco

Plant and Soil, 1977
Tobacco plants (Nicotiana tabacum L.) were grown from transplanting until floral expression in the phytotron units of Southeastern Plant Environment Laboratories to evaluate the relationship between relative growth rate (RGR) and relative accumulation rates (RAR) of N, P, K, Ca, and Mg. RAR is calculated to be analogous to RGR.
C. David Raper, David T. Patterson, Lawrence R. Parsons, Paul J. Kramer   +3 more
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