Results 11 to 20 of about 1,211,249 (246)

Utilisation des résines échangeuses d’ions pour le nettoyage d’objets métalliques archéologiques ou historiques

open access: yesCeROArt : Conservation, Exposition, Restauration d'Objets d'Art, 2021
Ion exchange resin was first synthesized in 1930 and is still widely used, mainly for water purification. The compound has already been used in certain restoration operations; however, at present there is no literature dealing with the exchange processes
Marietta Carlino, Elodie Guilminot
doaj   +1 more source

Mars Ion and Neutral Particle Analyzer (MINPA) for Chinese Mars Exploration Mission (Tianwen-1): Design and ground calibration

open access: yesEarth and Planetary Physics, 2020
The main objective of the Mars Ion and Neutral Particle Analyzer (MINPA) aboard the Chinese Mars Exploration Mission (Tianwen-1) is to study the solar wind–Mars interaction by measuring the ions and energetic neutral atoms (ENAs) near Mars.
LingGao Kong   +17 more
doaj   +1 more source

Investigation of the effects of temperature and ions on the interaction between ECG and BSA by the fluorescence quenching method [PDF]

open access: yesArchives of Biological Sciences, 2011
The effects of temperature and common ions on binding (-)-epicatechin gallate (ECG) to bovine serum albumin (BSA) are investigated. The binding constants (Ka) between ECG and BSA are 1.20 Ч 106 (17°C), 1.38 Ч 106 (27°C), and 5.69 x 106 L mol-1 (37°C),
Zhao Jinyao   +3 more
doaj   +1 more source

Imaging of Chemical Reactions Using a Terahertz Chemical Microscope

open access: yesPhotonics, 2019
This study develops a terahertz (THz) chemical microscope (TCM) that visualizes the distribution of chemical reaction on a silicon-based sensing chip. This chip, called the sensing plate, was fabricated by depositing Si thin films on a sapphire substrate
Toshihiko Kiwa   +11 more
doaj   +1 more source

Pitch Angle Structures of Ring Current Ions Induced by Evolving Poloidal Ultra‐Low Frequency Waves

open access: yesGeophysical Research Letters, 2020
Ultra‐low frequency (ULF) waves can effectively accelerate ring current ions through drift‐bounce resonance. Conventional theories have been developed to understand this resonance since the dawn of the space age, which usually assume ULF waves are quasi ...
Z.‐Y. Liu   +4 more
doaj   +1 more source

Exploitation of chloride ion selective electrode for determination of some chloro-oxygenated agents with iodide in the acidic medium. [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2017
It was confirmed in this research that Cl¯ ISE was successfully used in the determination of chloro-oxygenated agents involving hypochlorite, chlorite, chlorate and perchlorate in their individual and mixture aqueous solutions.
Ismail K.AlHitti, Marwan A.A. Hassen
doaj   +1 more source

50 Years since Kaufman and Phillips’ Groundbreaking Trilogy Elucidating Ion and Water Homeostasis in Ixodid Ticks

open access: yesPathogens, 2023
The enormous volume of blood ingested by hard ticks during their long attachment period is without a doubt the hallmark of their biology. Maintaining a homeostatic balance between ion and water intake and loss during their feeding is critical to ...
Ladislav Šimo
doaj   +1 more source

Rice OsCASP1 orchestrates Casparian strip formation and suberin deposition in small lateral roots to maintain nutrient homeostasis

open access: yesFrontiers in Plant Science, 2022
Arabidopsis Casparian strip membrane domain proteins (CASPs) form a transmembrane scaffold to recruit lignin biosynthetic enzymes for Casparian strip (CS) formation.
Xianfeng Yang   +6 more
doaj   +1 more source

Hydrated Ions: From Individual Ions to Ion Pairs to Ion Clusters

open access: yesThe Journal of Physical Chemistry B, 2015
The structure of hydrated ions plays a central role in chemical and biological sciences. In the present paper, five ions, namely, Na(+), K(+), Mg(2+), Ca(2+) and Cl(-), are examined using molecular dynamics simulations. In addition to hydrated individual ions and ion pairs identified previously, hydrated ion clusters containing 3, 4, 5, or more ions ...
Houyang, Chen, Eli, Ruckenstein
openaire   +2 more sources

Periodic Electro-Optical Characteristics of PDLC Film Driven by a Low-Frequency Square Wave Voltage

open access: yesCrystals, 2022
The electro-optical features of the PDLC films applied with a low-frequency square wave voltage were investigated. The transmittance curves indicated the double frequency of the applied voltage at 0–50 Hz, which resulted from the relaxation of an ...
Xiangshen Meng   +6 more
doaj   +1 more source

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