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You searched for: Publication year rev 7990-2010 Remove constraint Publication year rev: 7990-2010 Subject term cations Remove constraint Subject term: cations
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1. A laboratory investigation of microbe-inducing CdCO₃ precipitate treatment in Cd²⁺ contaminated soil

Author:
Li, Li; Qian, Chunxiang; Cheng, Liang; Wang, Ruixing
Source:
Journal of soils and sediments 2010 v.10 no.2 pp. 248-254
ISSN:
1439-0108
Subject:
carbonates; soil solution; stems; equations; heavy metals; cations; wheat; soil treatment; urea; hydrolysis; soil sampling; urease; Spermatophytina; Pasteurella; polluted soils; bacteria; China
Abstract:
... Background, aim and scope This paper discusses a method investigating the reduction of free heavy metal cation contents in soil through the use of microbe-inducing precipitate (MIP). Materials and methods Bacteria Pasteurella is adopted to induce urea hydrolysis and produce CO ₃ ²⁻ . Free Cd²⁺ is then precipitated as CdCO₃ in soil. Bacteria Pasteurella reproduces and the produced urease activity i ...
DOI:
10.1007/s11368-009-0089-6

2. A spring-driven press device for hot embossing and thermal bonding of PMMA microfluidic chips

Author:
Chen, Zhi; Zhang, Luyan; Chen, Gang
Source:
Electrophoresis 2010 v.31 no.15 pp. 2512-2519
ISSN:
0173-0835
Subject:
air; bolts; bubbles; cations; electrophoresis; epoxides; glass; rubber; silicone; steel
Abstract:
... A novel spring-driven press device was designed and manufactured for hot embossing and thermal bonding of PMMA microfluidic chips in this work. This simple device consisted of two semi-cylinder silicone rubber press heads, three steel clamping plates, and three compression springs that were assembled together using two screw bolts and two butterfly nuts. The three springs were clamped between the ...
DOI:
10.1002/elps.201000084

3. A story of high-temperature ferromagnetism in semiconductors

Author:
Alberta Bonanni; Tomasz Dietl
Source:
Chemical Society reviews 2010 v.39 no.2 pp. 528-539
ISSN:
1460-4744
Subject:
ambient temperature; cations; electron microscopy; ferromagnetism; oxides; semiconductors; separation
Abstract:
... The comprehensive search for multifunctional materials has resulted in the discovery of semiconductors and oxides showing ferromagnetic features persisting to room temperature. In this tutorial review the methods of synthesis of these materials, as well as the application of element-specific nano-analytic tools, particularly involving synchrotron radiation and electron microscopy, are described an ...
DOI:
10.1039/b905352m

4. A strategy to the ordered assembly of functional small cations with layered double hydroxides for luminescent ultra-thin films

Author:
Dongpeng Yan; Jun Lu; Li Chen; Shenghui Qin; Jing Ma; Min Wei; David G. Evans; Xue Duan
Source:
Chemical communications 2010 v.46 no.32 pp. 5912-5914
ISSN:
1364-548X
Subject:
anions; cations; chemical communication; chemical reactions; hydroxides; luminescence
Abstract:
... A cationic functional molecule (BNMA) was assembled with a positively-charged LDH monolayer through a polyanion (PVS) as the intermediary. The approach allows fine-tuning and ordered assembly of functional cations with LDH monolayers for designing and achieving novel organic–inorganic ultra-thin films. ...
DOI:
10.1039/c0cc00522c

5. A “Zero Sample Concentration Approach”: Standardization of Methods for the Estimation of Total Antioxidant Activity by the Use of Extrapolation to Zero Sample Concentration. A Novel Standard. 1. ABTS Cation Radical Scavenging

Author:
Barton, Henryk J.
Source:
Journal of agricultural and food chemistry 2010 v.58 no.16 pp. 8918-8926
ISSN:
0021-8561
Subject:
estimation; foods; dose response; standardization; laboratory techniques; blood chemistry; cations; free radical scavengers; data analysis; animal models; sulfonates; analytical methods; antioxidant activity; rats
Abstract:
... The study presents the general method of standardization of estimations of total antioxidant activity (TAA) by extrapolating parameters to zero sample concentration based on a pseudo-first-order kinetics model. To test its suitability, the method was applied to the ABTS cation radical scavenging assay, as the first choice. Two alternative methods of extrapolation were presented, via linear regress ...
DOI:
10.1021/jf101066w
PubMed:
20669966

6. Adsorption of Antibiotics by Montmorillonite and Kaolinite

Author:
M. E. Essington; J. Lee; Y. Seo
Source:
Soil Science Society of America journal 2010 v.74 no.5 pp. 1577-1588
ISSN:
0361-5995
Subject:
kaolinite; simulation models; soil organic carbon; tylosin; soil pH; calcium; cations; cation exchange; sodium; dissolved organic carbon; antibiotic residues; montmorillonite; sulfamethazine; ionic strength; chlortetracycline; sorption isotherms; adsorption
Abstract:
... Agricultural antibiotics are commonly present in animal manures that are applied to soil. The objective of this study was to examine the influence of pH, ionic strength, background electrolyte cation type, and dissolved organic C (DOC) concentration on the adsorption of chlortetracycline (CTC), tylosin (TYL), and sulfamethazine (SMT) to montmorillonite and kaolinite. Surface complexation and isoth ...
DOI:
10.2136/sssaj2009.0283

7. Adsorption of Magnesium by Bottom Soils in Inland Brackish Water Shrimp Ponds in Alabama

Author:
Pine, HarveyJ.; Boyd, ClaudeE.
Source:
Journal of the World Aquaculture Society 2010 v.41 no.4 pp. 603-609
ISSN:
0893-8849
Subject:
laboratories; cation exchange capacity; ponds; fertilizers; seepage; cations; magnesium; potassium; potassium chloride; tanks; shrimp; brackish water; magnesium sulfate; shrimp culture; adsorption; Alabama
Abstract:
... Low-salinity (2.0-9.0 g/L) well waters used for inland culture of marine shrimp in Alabama are imbalanced with respect to ionic composition. Inputs of potassium (muriate of potash) and potassium-magnesium sulfate (Kmag®) fertilizers are used to correct these imbalances. Potassium is lost in overflow and intentional discharge, seepage, and through adsorption by bottom soils by exchangeable and non- ...
DOI:
10.1111/j.1749-7345.2010.00400.x

8. Alteration of cell-wall porosity is involved in osmotic stress-induced enhancement of aluminium resistance in common bean (Phaseolus vulgaris L.)

Author:
Yang, Zhong-Bao; Eticha, Dejene; Rao, Idupulapati Madhusudana; Horst, Walter Johannes
Source:
Journal of experimental botany 2010 v.61 no.12 pp. 3245-3258
ISSN:
0022-0957
Subject:
Phaseolus vulgaris; aluminum; apoplast; beans; binding capacity; cations; citrates; crop production; dialysis; drought; exudation; genotype; hydroponics; polyethylene glycol; porosity; root growth; root tips; toxicity; tropics; water stress
Abstract:
... Aluminium (Al) toxicity and drought are the two major abiotic stress factors limiting common bean production in the tropics. Using hydroponics, the short-term effects of combined Al toxicity and drought stress on root growth and Al uptake into the root apex were investigated. In the presence of Al stress, PEG 6000 (polyethylene glycol)-induced osmotic (drought) stress led to the amelioration of Al ...
DOI:
10.1093/jxb/erq146
PubMed:
20511277
PubMed Central:
PMC2905193

9. Analysis of Basic Drugs: A Comparison of Two Different Strong Cation Exchange-Modified LC Packings

Author:
Morgan, Phillip E.; Hanna-Brown, Melissa; Flanagan, Robert J.
Source:
Chromatographia 2010 v.72 no.1-2 pp. 15-22
ISSN:
0009-5893
Subject:
cation exchange; cations; drugs; hydrophobicity; ionic strength; liquid chromatography; nitrogen; pH; silica; solvents
Abstract:
... Evidence in the literature of systematic investigation of retention mechanisms on strong cation-exchange (SCX) modified silica LC packings is lacking. In this study, the retention behaviour of selected basic drugs using a propylbenzenesulfonic acid-modified packing (Nucleosil 100SA) were compared, under similar conditions, with previous findings from a propylsulfonic acid-modified packing (Waters ...
DOI:
10.1365/s10337-010-1622-x

10. Analysis of a novel calcium auxotrophy in Aspergillus nidulans

Author:
Findon, Helen; Calcagno-Pizarelli, Ana-Maria; Martínez, José L.; Spielvogel, Anja; Markina-Iñarrairaegui, Ane; Indrakumar, Tanya; Ramos, José; Peñalva, Miguel A.; Espeso, Eduardo A.; Arst, Herbert N. Jr.
Source:
Fungal genetics and biology 2010 v.47 no.7 pp. 647-655
ISSN:
1087-1845
Subject:
transcription factors; messenger RNA; Aspergillus nidulans; protein kinases; auxotrophs; calcium; ion transport; mutation; cations; plant pathogenic fungi; sodium; plasma membrane; potassium; adenosinetriphosphatase
DOI:
10.1016/j.fgb.2010.04.002
PubMed:
20438880
PubMed Central:
PMC2884188

11. Antimony speciation and contamination of waters in the Xikuangshan antimony mining and smelting area, China

Author:
Liu, Faye; Le, X. Chris; McKnight-Whitford, Anthony; Xia, Yunlong; Wu, Fengchang; Elswick, Erika; Johnson, Claudia C.; Zhu, Chen
Source:
Environmental geochemistry and health 2010 v.32 no.5 pp. 401-413
ISSN:
0269-4042
Subject:
anions; antimony; cations; drainage; mining; models; oxidation; pH; poisoning; rivers; seepage; streams; China
Abstract:
... Water samples from Xikuangshan (China), the world largest antimony (Sb) mine with a Sb mining and smelting history of more than 200 years, were analyzed. These water samples ranged from stream water in the vicinity of the mining and smelting area that received seepage from ore residues to the underground mine-pit drainage. The concentrations of total Sb, Sb (III) and Sb (V) of the samples were det ...
DOI:
10.1007/s10653-010-9284-z
PubMed:
20101438

12. Arylethynyl receptors for neutral molecules and anions: emerging applications in cellular imaging

Author:
Calden N. Carroll; John J. Naleway; Michael M. Haley; Darren W. Johnson
Source:
Chemical Society reviews 2010 v.39 no.10 pp. 3875-3888
ISSN:
1460-4744
Subject:
anions; cations; chemistry; engineering; fluorescent dyes; geometry; image analysis; receptors
Abstract:
... This critical review will focus on the application of shape-persistent receptors for anions that derive their rigidity and optoelectronic properties from the inclusion of arylethynyl linkages. It will highlight a few of the design strategies involved in engineering selective and sensitive fluorescent probes and how arylacetylenes can offer a design pathway to some of the more desirable properties ...
DOI:
10.1039/b926231h
PubMed:
20820467
PubMed Central:
PMC3062433

13. Astaxanthin Inhibits Glutamate Release in Rat Cerebral Cortex Nerve Terminals via Suppression of Voltage-Dependent Ca2+ Entry and Mitogen-Activated Protein Kinase Signaling Pathway

Author:
Lin, Tzu Yu; Lu, Cheng Wei; Wang, Su Jane
Source:
Journal of agricultural and food chemistry 2010 v.58 no.14 pp. 8271–8278
ISSN:
0021-8561
Subject:
astaxanthin; phytochemicals; rats; animal models; cerebral cortex; neurons; glutamic acid; calcium; membrane permeability; mitogen-activated protein kinase; biochemical pathways; cell communication; synaptosomes; dose response; cations; amino acid transporters; enzyme inhibitors; calcium channels; antioxidants; human nutrition
Abstract:
... The purpose of this study was to examine the effect and mechanism of astaxanthin, a natural carotenoid, on endogenous glutamate release in nerve terminals of rat cerebral cortex (synaptosomes). Results showed that astaxanthin exhibited a dose-dependent inhibition of 4-aminopyridine (4-AP)-evoked release of glutamate. The effect of astaxanthin on the evoked glutamate release was prevented by chelat ...
DOI:
10.1021/jf101689t
PubMed:
20593829

14. Atmospheric CO₂ enrichment facilitates cation release from soil

Author:
Cheng, L.; Zhu, J.; Chen, G.; Zheng, X.; Oh, N.-H.; Rufty, T.W.; Richter, D. deB.; Hu, S.
Source:
Ecology letters 2010 v.13 no.3 pp. 284-291
ISSN:
1461-023X
Subject:
calcium; carbon; carbon dioxide; carbon dioxide enrichment; cation exchange; cations; excretion; iron; magnesium; manganese; nutrient uptake; photosynthesis; plant growth; protons; redox potential; rice soils; roots; soil acidification; terrestrial ecosystems
Abstract:
... Ecology Letters (2010) 13: 284-291 Atmospheric CO₂ enrichment generally stimulates plant photosynthesis and nutrient uptake, modifying the local and global cycling of bioactive elements. Although nutrient cations affect the long-term productivity and carbon balance of terrestrial ecosystems, little is known about the effect of CO₂ enrichment on cation availability in soil. In this study, we presen ...
DOI:
10.1111/j.1461-0248.2009.01421.x

15. Bismuthenium-pnictonium dications [R′BiPnR₃]²⁺ (Pn = As, Sb) containing carbenoid bismuth centers and rare Bi–Sb bonds

Author:
Eamonn Conrad; Neil Burford; Robert McDonald; Michael J. Ferguson
Source:
Chemical communications 2010 v.46 no.25 pp. 4598-4600
ISSN:
1364-548X
Subject:
antimony; arsenic; bismuth; cations; chemical bonding; chemical communication; chemical reactions; ligands
Abstract:
... Arsine and stibine ligands stabilize bismuthenium cations and bismuthetidinium dications to give compounds containing As–Bi bonds and Sb–Bi bonds. The first enium–onium bonding environments in dications of the form [R′BiPnR₃]²⁺ (Pn = As, Sb) contain the first definitive examples of carbenoid bismuth centers. ...
DOI:
10.1039/c0cc00111b

16. Cation recognition and pseudorotaxane formation of tris-dipyrrin BF₂ macrocycles

Author:
Naoya Sakamoto; Chusaku Ikeda; Tatsuya Nabeshima
Source:
Chemical communications 2010 v.46 no.36 pp. 6732-6734
ISSN:
1364-548X
Subject:
ammonium salts; cations; chemical communication; chemical reactions; rotaxanes
Abstract:
... Macrocyclic planar tris-dipyrrin BF₂ complexes exhibit strong alkali-metal recognition and pseudorotaxane formation ability with a secondary ammonium salt through BF₂–cation interactions. ...
DOI:
10.1039/c0cc01717e

17. Cation-dependent cleavage of the duplex form of the subtype-B HIV-1 RNA dimerization initiation site

Author:
Ennifar, Eric; Walter, Philippe; Dumas, Philippe
Source:
Nucleic acids research 2010 v.38 no.17 pp. 5807-5816
ISSN:
0305-1048
Subject:
Human immunodeficiency virus 1; RNA; barium; cations; cobalt; crystal structure; dimerization; geometry; guanine; manganese; pH; zinc
Abstract:
... The crystal structure of subtype-B HIV-1 genomic RNA Dimerization Initiation Site duplex revealed chain cleavage at a specific position resulting in 3'-phosphate and 5'-hydroxyl termini. A crystallographic analysis showed that Ba²⁺, Mn²⁺, Co²⁺ and Zn²⁺ bind specifically on a guanine base close to the cleaved position. The crystal structures also point to a necessary conformational change to induce ...
DOI:
10.1093/nar/gkq344
PubMed:
20460458
PubMed Central:
PMC2943608

18. Cationic and neutral amino acid transporter transcript abundances are differentially expressed in the equine intestinal tract

Author:
Woodward, A.D.; Holcombe, S.J.; Steibel, J.P.; Staniar, W.B.; Colvin, C.; Trottier, N.L.
Source:
Journal of animal science 2010 v.88 no.3 pp. 1028-1033
ISSN:
0021-8812
Subject:
amino acid transporters; horses; large intestine; small intestine; amino acids; cations; intestinal absorption; messenger RNA; tissue analysis
Abstract:
... To test the hypothesis that AA transporter transcripts are present in the large intestine and similarly expressed along the intestinal tract, mRNA abundance of candidate AA transporter genes solute carrier (SLC) family 7, member 9 (SLC7A9), SLC7A1, SLC7A8, and SLC43A1 encoding for b⁰,⁺-type AA transporter (b⁰,⁺AT), cationic AA transporter-1 (CAT-1), L-type AA transporter-2 (LAT-2), and L-type AA t ...
DOI:
10.2527/jas.2009-2406
PubMed:
19933436

19. Characterization of Endoplasmic Reticulum-Localized UDP-D-Galactose: Hydroxyproline O-Galactosyltransferase Using Synthetic Peptide Substrates in Arabidopsis

Author:
Oka, Takuji; Saito, Fumie; Shimma, Yoh-ichi; Yoko-o, Takehiko; Nomura, Yoshiyuki; Matsuoka, Ken; Jigami, Yoshifumi
Source:
Plant physiology 2010 v.152 no.1 pp. 332-340
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; acids; biochemical pathways; cations; centrifugation; endoplasmic reticulum; enzymes; high performance liquid chromatography; hydroxyproline; lasers; manganese; mass spectrometry; pH; peptides; protein synthesis; protein transport; sucrose; temperature
Abstract:
... We characterized peptidyl hydroxyproline (Hyp) O-galactosyltransferase (HGT), which is the initial enzyme in the arabinogalactan biosynthetic pathway. An in vitro assay of HGT activity was established using chemically synthesized fluorescent peptides as acceptor substrates and extracts from Arabidopsis (Arabidopsis thaliana) T87 cells as a source of crude enzyme. The galactose residue transferred ...
DOI:
10.1104/pp.109.146266
PubMed:
19923238
PubMed Central:
PMC2799367

20. Characterization of the two-protein complex in Escherichia coli responsible for lipopolysaccharide assembly at the outer membrane

Author:
Chng, Shu-Sin; Ruiz, Natividad; Chimalakonda, Gitanjali; Silhavy, Thomas J.; Kahne, Daniel
Source:
Proceedings of the National Academy of Sciences of the United States of America 2010 v.107 no.12 pp. 5363-5368
ISSN:
0027-8424
Subject:
Escherichia coli; Gram-negative bacteria; biosynthesis; cations; divalent metals; lipopolysaccharides; proteins; stoichiometry; toxic substances
Abstract:
... Lipopolysaccharide (LPS) is the major glycolipid that is present in the outer membranes (OMs) of most Gram-negative bacteria. LPS molecules are assembled with divalent metal cations in the outer leaflet of the OM to form an impervious layer that prevents toxic compounds from entering the cell. For most Gram-negative bacteria, LPS is essential for growth. In Escherichia coli, eight essential protei ...
DOI:
10.1073/pnas.0912872107
PubMed:
20203010
PubMed Central:
PMC2851745