Results 21 to 30 of about 807,421 (315)

Potassium Alleviates Post-anthesis Photosynthetic Reductions in Winter Wheat Caused by Waterlogging at the Stem Elongation Stage

open access: yesFrontiers in Plant Science, 2021
Waterlogging occurs frequently at the stem elongation stage of wheat in southern China, decreasing post-anthesis photosynthetic rates and constraining grain filling.
Jingwen Gao   +5 more
doaj   +1 more source

Electronic structure of undoped and potassium doped coronene investigated by electron energy-loss spectroscopy [PDF]

open access: yesPhys. Rev. B 85, 014513 (2012), 2012
We performed electron energy-loss spectroscopy studies in transmission in order to obtain insight into the electronic properties of potassium intercalated coronene, a recently discovered superconductor with a rather high transition temperature of about 15\,K.
arxiv   +1 more source

Comparação sérica e sangüínea do cálcio ionizado, sódio, potássio e cloreto em felinos pelo método eletrodo íon seletivo Serum and blood comparison of ionized calcium, sodium, potassium and chloride in cats, by ion-selective electrode method

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2007
Values of sodium, ionized calcium, potassium and chloride obtained by ion-selective electrode method, from serum and blood samples of healthy cats, were compared. Serum ionized calcium value was lower (5.2mg/dl) than blood ionized calcium (5.4mg/dl), and
L.H. Giovaninni   +4 more
doaj   +1 more source

Optimisation of Nitrogen, Phosphorus, and Potassium for Soilless Production of Cannabis sativa in the Flowering Stage Using Response Surface Analysis

open access: yesFrontiers in Plant Science, 2021
Following legalisation, cannabis has quickly become an important horticultural crop in Canada and increasingly so in other parts of the world. However, due to previous legal restrictions on cannabis research there are limited scientific data on the ...
Lewys Bevan, Max Jones, Youbin Zheng
doaj   +1 more source

Evidence for phase formation in potassium intercalated 1,2;8,9-dibenzopentacene [PDF]

open access: yesEur. Phys. J. B 85, 242 (2012), 2012
We have prepared potassium intercalated 1,2;8,9-dibenzopentacene films under vacuum conditions. The evolution of the electronic excitation spectra upon potassium addition as measured using electron energy-loss spectroscopy clearly indicate the formation of particular doped phases with compositions K$_x$dibenzopentacene ($x$ = 1,2,3).
arxiv   +1 more source

Admission Serum Potassium Levels in Hospitalized Patients and One-Year Mortality

open access: yesMedicines, 2019
Background: The aim of this study was to assess the relationship between admission serum potassium and one-year mortality in all adult hospitalized patients.
Charat Thongprayoon   +7 more
doaj   +1 more source

Effect of the fertilization on the population of Corythaica cyathicollis in eggplants in function of the collection period [PDF]

open access: yesBiotemas, 2008
Corythaica cyathicollis (Costa, 1864) is one of the main pests on Solanum melongena and it is known to cause serious damage to the culture. To determine the effect of N and K fertilization on eggplants, a study on the occurrence of C.
Fabiano Teixeira Pereira   +2 more
doaj  

Hyperkalemia - a review article

open access: yesJournal of Education, Health and Sport, 2019
Introduction: Potassium is critical cation in physiological functions. Hyperkalemia is a common electrolyte disorder, defined as potassium level above 5,5 mmol/L.
Marcin Makuch   +2 more
doaj   +1 more source

Generating potassium abundance variations in the Solar Nebula [PDF]

open access: yes, 2016
An intriguing aspect of chondritic meteorites is that they are complementary: while their separate components have wildly varying abundances, bulk chondrites have nearly solar composition. This implies that the nearly-solar reservoirs in which chondrites were born were in turn assembled from sub-reservoirs of differing compositions that birthed the ...
arxiv   +1 more source

The retranslocation of boron is influenced by the nutritional status of cherry tomato plants

open access: yesBioscience Journal, 2020
Boron (B) retranslocation may confer greater tolerance to B deficiency or toxicity, resulting in plants and fruits with better nutritional quality. Most plants do not demonstrate phloem mobility for B; however, some plants have natural mobility and ...
Denison Queiroz Pogorzelski   +5 more
doaj   +1 more source

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