Results 31 to 40 of about 1,360,686 (305)

Phase diagram of mechanically stretched DNA: The salt effect

open access: yes, 2013
The cations, in form of salt, present in the solution containing DNA play a crucial role in the opening of two strands of DNA. We use a simple non linear model and investigate the role of these cations on the mechanical unzipping of DNA.
Singh, Amar, Singh, Navin
core   +1 more source

Solid solutions of rare earth cations in mesoporous anatase beads and their performances in dye-sensitized solar cells [PDF]

open access: yes, 2015
Solid solutions of the rare earth (RE) cations Pr3+, Nd3+, Sm3+, Gd3+, Er3+ and Yb3+ in anatase TiO2 have been synthesized as mesoporous beads in the concentration range 0.1-0.3% of metal atoms.
Cavallo, Carmen   +6 more
core   +1 more source

Synthesis, molecular and crystal structure of [(NH2)2CSSC(NH2)2]2[RuBr6]Br2·3H2O

open access: yesActa Crystallographica Section E: Crystallographic Communications
The title compound, bis[dithiobis(formamidinium)] hexabromidoruthenium dibromide trihydrate, [(NH2)2CSSC(NH2)2]2[RuBr6]Br2·3H2O, crystallizes in the orthorhombic system, space group Cmcm, Z = 4.
Olga V. Rudnitskaya   +7 more
doaj   +1 more source

Variations of Major Ionic Composition and Salinity of Tigris River within Iraq

open access: yesSulaimani Journal for Engineering Sciences, 2015
Major ions are widely used to identify the hydrochemical and hydrological characteristic of water to assess water quality. Major ions compositions (Ca+2, Mg+2, Na+1, K+1, Cl-1, SO4-2, [HCO3]-1 and [CO3]-2), pH and salinity (TDS) of water in Tigris river ...
Sabah Obaid Hamad Al-Shujairi   +2 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Enzymatic activity of the Kuyavia Mollic Gleysols (Poland) against their chemical properties

open access: yesPlant, Soil and Environment, 2013
The research results have shown that the enzyme pH index (0.49-0.83) confirmed the neutral or alkaline nature of the soils. Neither the changes in the content of available phosphorus nor in the activity of dehydrogenases, catalase, alkaline and acid ...
M. Krzyżaniak, J. Lemanowicz
doaj   +1 more source

Analysis and Sources Identification of Atmospheric PM10 and Its Cation and Anion Contents in Makkah, Saudi Arabia

open access: yesAtmosphere, 2022
In this paper, atmospheric water-soluble cation and anion contents of PM10 are analysed in Makkah, Saudi Arabia. PM10 samples were collected at five sites for a whole year. PM10 concentrations (µg/m3) ranged from 82.11 to 739.61 at Aziziyah, 65.37 to 421.
Turki M. Habeebullah   +3 more
doaj   +1 more source

Effects of Cations and PH on Antimicrobial Activity of Thanatin and s-Thanatin against _Escherichia coli_ ATCC25922 and _B. subtilis_ ATCC 21332 [PDF]

open access: yes, 2008
Thanatin and s-thanatin were insect antimicrobial peptides which have shown potent antimicrobial activities on a variety of microbes. In order to investigate the effect of cations and pH on the activity of these peptides against Gram-negative bacteria ...
Guoqiu Wu   +6 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Dynamics of the uptake of nutrient elements from the medium of in vitro cultured apple rootstocks

open access: yesInternational Journal of Horticultural Science, 1999
Cation uptake of J-TE-F apple rootstocks propagated in vitro was studied by the analysis of culture medium. Test-plants were grown on liquid medium under different light regimes. Samples for tests were taken twice a week.
Gy. Végvári
doaj   +1 more source

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