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132 articles for “Ions”
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Research ArticleOpen accessIn the keywordsBiosorption of Cr(III) by Microalgae and Macroalgae: Equilibrium of the ProcessIzabela Michalak, Agnieszka Zielinska, Katarzyna Chojnacka, Jan MatulaEquilibrium experiments of chromium(III) biosorption by microalga (Spirulina sp.) and macroalga (Pithophora varia) were investigated in this paper. Influence of the following process parameters was studied: pH, biomass concentration and temperature. The equilibrium of the process was described with Langmuir equation. The model parameters were determined at various process conditions. The best operation conditions for the process were selected: pH … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 8,208 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of Mercuric Ion on the Oxidant Response and Calcium Ion in the Protoplasts of Arabidopsis ThalianaJun Xing, Rui Wu, Hui Yu et al.As a non-essential element for plant growth and development, the heavy metal mercury (Hg) has significant toxicity to plants. The aim of this study was to investigate the effect of mercuric ion (Hg2+) on the oxidant response and calcium ion (Ca2+) in the protoplasts of Arabidopsis thaliana. The protoplast cells were exposed to 5.0, 10.0, and 20.0 mmol/L Hg2+ for … …American Journal of Biochemistry and Biotechnology, Vol. 19, Issue 3 · 29 Aug 2023 · 4,966 accessesView PDFCite
Research ArticleOpen accessIn the keywordsHydrogen is a Friend, or an Enemy, of the Environment?Relly Victoria Virgil Petrescu, Raffaella Aversa, Taher M. Abu-Lebdeh et al.Hydrogen is the best friend of man and the environment. Actually, it is the core element from that can extract energy, at infinity, in various forms. Until now has not been sufficiently exploited, but once with the evolution of the human species is the time to start to pool all types of energy which the hydrogen and its isotopes may … …Energy Research Journal, Vol. 9, Issue 1 · 6 Feb 2019 · 7,034 accessesView PDFCite
Review ArticleOpen accessIn the keywordsOn Mars there was WaterFlorian Ion Tiberiu PetrescuScientists overseeing Curiosity's mission on Mars confirmed that the shape and size of the pebbles on the dry tracks indicate that they were transported and eroded by the waters. According to them, the rover found the roots of rocks equivalent to the flowing waters on Earth. The planet Mars, the closest to Terra, had life conditions similar to our blue … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 11 May 2018 · 8,640 accessesView PDFCite
Research ArticleOpen accessIn the keywordsOptical and Physical Properties of Bismuth Borate Glasses Doped With Dy3+Pichet Limsuwan, Jakrapong Kaewkhao, Parnuwat Chimalawong, Smit InsiripongThis study reports on physical and optical properties of Dy3+ doped bismuth borate glass. The glasses containing Dy3+ in (70-x)B2O3:30Bi2O3:xDy2O3 (where x = 0.0-2.5 mol%) have been prepared by melt-quenching method. In order to understand the role of Dy2O3 in these glasses, the density, molar volume and optical spectra were investigated. The results show that molar volume of the glasses … …American Journal of Applied Sciences, Vol. 8, Issue 6 · 13 Jun 2011 · 7,361 accessesView PDFCite
Research ArticleOpen accessIn the abstractPotentiometric Biosensor for Highly Toxic Pb (lead) and Cd (cadmium) Detection in Milk Using Layer-by-Layer ImmobilizationZhainagul Kakimova, Klara Zharykbasova, Aitbek Kakimov et al.Milk contamination with heavy metals such as lead (Pb) and Cadmium (Cd) poses a serious threat to public health, particularly in industrial regions. To address the need for rapid and on-site detection of these contaminants, a potentiometric biosensor was developed for the quantification of Pb²⁺ and Cd²⁺ ions in milk and dairy products. The biosensor functions by measuring the change … …OnLine Journal of Biological Sciences, Vol. 25, Issue 4 · 8 Feb 2026 · 1,484 accessesView PDFCite
Research ArticleOpen accessIn the abstractShift of Zeeman Components of Ionic Spectral Lines Caused by the Angular Doppler EffectEugene OksThe angular Doppler effect was introduced by Garetz. While the usual Doppler effect is caused by the translational motion of the emitter, the angular Doppler effect is caused by the rotational motion of the emitter. It results into the frequency shift of a circularly-polarized light. In the present paper we analyze the angular Doppler effect caused by the rotational motion … …Physics International, Vol. 15, Issue 1 · 16 Jun 2025 · 6,460 accessesView PDFCite
Research ArticleOpen accessIn the abstractImpact of B-Glucan Against Ehrlich Ascites Carcinoma Induced Renal Toxicity in MiceAhmed Flayyih Hasan, Azhar Azher Alankooshi et al.Several studies have been focused on identifying alternative medicines for the treatment of cancer. This study aimed to investigate the impact of B-Glucans extract (BG) against Ehrlich Ascites Carcinoma (EAC) induced toxicity and tissue damage in kidney. A total of 40 mice were assigned randomly to four groups (G1, control; G2, B-Glucans (75 mg/kg bw/day) orally for 2 weeks; G3, … …OnLine Journal of Biological Sciences, Vol. 23, Issue 1 · 23 Feb 2023 · 5,595 accessesView PDFCite
Research ArticleOpen accessIn the abstractMolecular Dynamics Simulation and Analysis of Crystallization System in PVC Tunnel Drain-Pipe at Different TemperaturesZhongwei Hou, Xuefu Zhang, Yuanjiang ZhouAiming at the problem that carbonate and calcium ions are easy to crystallize and precipitate in the drain-pipes of limestone tunnels and then adsorb on PVC pipes in Western China, a "solid-liquid interface model" for the interaction between PVC materials and ions in aqueous solution is established by using the molecular dynamics simulation software materials studio and the microscopic mechanism … …American Journal of Biochemistry and Biotechnology, Vol. 17, Issue 1 · 9 Mar 2021 · 6,283 accessesView PDFCite
Research ArticleOpen accessIn the abstractCyclodextrin Glucanotransferase Activity of Microbial Strains Isolated from Yam-Cultivation Soils in Northwestern BeninCyrille Alode Vodounon, Ténor Dias-Mendel Allode et al.β-Cyclodextrin, an industrially important oligosaccharide, is produced by microbial enzymes such as cyclodextrin glucanotransferase (CGTase). This study investigated ways to optimize the enzymatic activity of CGTase from Bacillus cereus, Bacillus pumilus, Bacillus brevis, and Bacillus subtilis strains isolated from soils in north-western Benin. Cyclization activity of CGTase and the influence of pH, temperature, and metal ions were assessed using conventional … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 3 · 21 Sep 2026 · 674 accessesView PDFCite