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Academic literature on the topic 'Effect of sulphates on'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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Journal articles on the topic "Effect of sulphates on"

1

PIEPKORN, Michael, Peter HOVINGH, L. Kelly BENNETT, Alejandro ARUFFO, and Alfred LINKER. "Chondroitin sulphate composition and structure in alternatively spliced CD44 fusion proteins." Biochemical Journal 327, no. 2 (October 15, 1997): 499–506. http://dx.doi.org/10.1042/bj3270499.

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Previous studies have indicated that CD44 isoforms, spliced with variant exons, are heterogeneously glycanated with chondroitin sulphate and heparan sulphate chains. Because such alternative splicing may regulate divergent biological effects of the specific isoforms, we analysed the consequences of this process on the composition and structure of the chondroitin-sulphate chains. Recombinant chimaeras were engineered with and without exons V3-10 or V3,8-10 and expressed as Ig fusion proteins in COS cells. In addition, the chondroitin sulphates of wild-type isoforms were contrasted with those of isoforms mutated with serine-to-alanine codon substitutions at a putative Ser-Gly-Ser-Gly glycosaminoglycan acceptor site within exon V3. The chondroitin sulphates contained both 4- and 6-sulphated galactosamine residues, although there was a high content of non-sulphated galactosamine-containing repeat units. Splicing of exons V4-7, which contain no Ser-Gly consensus motifs, resulted in increased glycanation with chondroitin-sulphate chains, as well as increased sulphation levels of the polymers. Comparison of wild-type and acceptor-site mutant isoforms showed that chondroitin-sulphate content declined by more than 60-80% in the mutant, indicating that assembly of chondroitin-sulphate chains occurs there, and a general decrease in the sulphation level of the remaining chains was observed. Undersulphation of the recombinant chondroitin sulphates was shown by parallel analyses with native human keratinocyte CD44 molecules and is most probably an artifact of transient expression in COS cells. Our data indicate that combinatorial exon splicing exerts complex and distal effects on glycanation patterns and structure, which presumably modulate those functions that may be mediated though the chondroitin-sulphate moieties, such as motility and matrix invasion.

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2

Hiebert, Linda M., and Ji-Min Liu. "Dextran Sulphates Protect Porcine Arterial Endothelial Cells from Free Radical Injury." Human & Experimental Toxicology 13, no. 4 (April 1994): 233–39. http://dx.doi.org/10.1177/096032719401300402.

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1 The ability of dextran sulphate to protect cultured porcine arterial endothelial cells injured by addition of xanthine and xanthine oxidase (X/XO) or hydrogen peroxide to cell medium was examined using a variety of drug preparations. Cell damage was assessed by determining cell viability (by trypan blue exclusion) and release of lactate dehydrogenase into the medium. 2 Dextran sulphates of average molecular weight (Mr) 5000, 8000 (hydrogenated or unhydrogenated) at 0.05, 0.5, 5 and 50 μg ml-1 medium, added 24 h prior to X/XO, protected cells, whereas dextran sulphate Mr 500,000 was protective only at 0.5 μg ml-1. 3 None of the dextran sulphates used showed any toxic effect on cells in concentrations up to 500 μg ml-1 medium. 4 When the duration of pretreatment with dextran sulphate Mr 8000 was varied, 6 h was required for a protective effect on cells damaged by X/XO, which was enhanced with durations of 16 and 24 h. 5 Dextran sulphates had a similar protective effect on cells damaged by hydrogen peroxide. 6 This study suggests that dextran sulphates may prevent conditions resulting from free radical injury.

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3

Iacoviello, Licia, Maria Cristina D'Adamo, Krystyna Pawlak, Roman Polishchuck, Tomasz Wollny, Wlodzimierz Buczko, and Maria Benedetta Donati. "Antithrombotic Activity of Dermatan Sulphates, Heparins and their Combination in an Animal Model of Arterial Thrombosis." Thrombosis and Haemostasis 76, no. 06 (1996): 1102–7. http://dx.doi.org/10.1055/s-0038-1650713.

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SummaryDermatan sulphates have been shown to inhibit thrombus formation and thrombus growth in different experimental models of venous thrombosis. At variance with heparins, they show a remarkably low haemorrhagic potential. On the other hand, very few data are available on the effect of dermatan sulphates on arterial thrombus formation. We evaluated the effects of a low molecular weight (LMW)-dermatan sulphate, a high molecular weight (HMW)-dermatan sulphate and sulo-dexide (a mixture of fast-moving heparin fraction and dermatan sulphate) in comparison with LMW- and HMW-heparin, in a model of arterial thrombosis in rats. The insertion of an artificial prosthesis into the abdominal aorta of the animals induced the formation of an occluding thrombus within 2-5 days. The time in which 50% of the loops became occluded (OT50) was also calculated and used to compare the efficacy of the different drug treatments. This was 2.84 days for control animals and 4.25 and 5.80 days for HMW- and LMW-dermatan sulphate, respectively. Neither drug changed the “template” bleeding time, even at higher doses. In contrast, HMW-heparin at doses (8 mg/kg, sc, twice a day) inducing an antithrombotic activity comparable to that of dermatan sulphates, dramatically prolonged the bleeding time. LMW-heparin at the same doses was ineffective. Sulodexide (10 mg/Kg, sc, twice a day) prolonged the occlusion time to the same extent as HMW-heparin (OT50 5.10 vs. 4.14 days), with less an effect on the bleeding time (144 ± 6 s vs. >300 s, respectively). Histological examination confirms that the prolongation of occlusion time induced by the drugs is really related to thrombus formation inhibition at the site of arterial wall injury.Acetyl salicylic acid (ASA) (100 mg/kg/day in drinking water as lysine acetylsalicylate) did not modify the effect of Desmin 370 and Sulodexide on both occlusion and bleeding time. However, while it did not increase the antithrombotic activity of HMW-heparin, it significantly prolonged its haemorrhagic effect. In conclusion, dermatan sulphates are effective inhibitors of arterial thrombosis in rats, without inducing bleeding complications.

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4

Mikšík, Ivan, Šárka Kubinová, Marine Morvan, Karel Výborný, Ameneh Tatar, Vladimír Král, Kamil Záruba, and David Sýkora. "Analysis of Chondroitin/Dermatan Sulphate Disaccharides Using High-Performance Liquid Chromatography." Separations 7, no. 3 (September 16, 2020): 49. http://dx.doi.org/10.3390/separations7030049.

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Chondroitin sulphates belong to a group of naturally occurring glycosaminoglycans and play a role in many physiological processes including ageing and the effects of various diseases. Research into chondroitin sulphates has found that the most important analytes are 4- and 6-sulphated disaccharides. We developed an HPLC method for the separation and quantification of underivatized chondroitin/dermatan sulphates—unsaturated disaccharides (4- and 6-sulphated disaccharides). This method is based on the separation of disaccharides by amido as well as amino columns under acidic conditions. These columns enabled the successful separation of 4- and 6-sulphated disaccharides using 50 (amido column) and 25 mmol/L (amino column) phosphate buffer, pH 4.25 (detection at 230 nm), at retention times of less than 10 min. The limit of quantification was 0.5 μg/mL. The applicability of this method was demonstrated through analysis of unsaturated disaccharides produced from the enzymatic digestion of chondroitin/dermatan sulphates of the solubilized extracellular matrix produced from porcine urinary bladder and human umbilical cord.

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Shum, D. K. Y., and M. D. I. Gohel. "Separate Effects of Urinary Chondroitin Sulphate and Heparan Sulphate on the Crystallization of Urinary Calcium Oxalate: Differences between Stone Formers and Normal Control Subjects." Clinical Science 85, no. 1 (July 1, 1993): 33–39. http://dx.doi.org/10.1042/cs0850033.

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1. Urinary glycosaminoglycans were recovered from the papain digest of polyanions precipitated sequentially by cetylpyridinium chloride and sodium acetate-saturated ethanol. Those from the early morning urine of 48 stone formers and 43 normal control subjects measured 11 and 16 μg of uronic acid/ml of urine, respectively. 2. Preparative agarose gel electrophoresis of the recovered glycosaminoglycans in barium acetate buffer (pH 5.8) yielded fractions containing purely chondroitin sulphate, co-polymeric chondroitin/dermatan sulphates and heparan sulphate. Identification was based on the susceptibility of the fractions to chondroitinase or nitrous acid treatment. Similar compositions of glycosaminoglycan classes were observed in samples from stone formers and normal control subjects. 3. The fractionated glycosaminoglycans were dissolved in urine ultrafiltrate to assay for nucleation-promoting and growth-inhibiting activities towards crystallization of urinary calcium oxalate. When compared at the same uronic acid concentration, both the urinary chondroitin sulphate isomers and heparan sulphates of stone formers demonstrated the capacity to enhance crystal nucleation from calcium oxalate endogenous in urine ultrafiltrates, whereas only urinary heparan sulphates of normal control subjects demonstrated this capacity. 4. Tissue-derived reference chondroitin sulphate, dermatan sulphate and heparin, when similarly tested, showed negligible crystal nucleation-promoting activity. The tissue-derived heparan sulphate was similar to the urinary heparan sulphates in showing marked crystal nucleation-promoting activity. 5. Crystal-growth inhibitory activity was evident in all urinary glycosaminoglycan fractions studied. In particular, urinary heparan sulphate of normal control subjects showed higher activity than that of stone formers or the chondroitin sulphate isomers of both stone formers and normal control subjects (P <0.005).

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6

Pitha, J., and R. Anand. "Alpha-Cyclodextrin Sulphate, an anti-HIV Agent, Retains its Antiviral Effect in the Presence of Hydrocortisol Phosphate." Antiviral Chemistry and Chemotherapy 4, no. 1 (February 1993): 65–66. http://dx.doi.org/10.1177/095632029300400108.

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Cyclodextrin sulphates alpha (a) and beta (b) were found to be inhibitors of replication of human immunodeficiency virus (HIV-1) in phytohaemagglutinin (PHA)-stimulated human peripheral blood mononuclear cells (PBMC); the same cells were also stimulated to proliferate (Anand et al., 1990). B-Cyclodextrin sulphate was also found to stimulate another, more complex, cell proliferation-neovascularization process in rabbit cornea (Folkman et al., 1989). Since the process of neovascularization is generally associated with progression of tumour growth and other pathologies, it is obvious that its stimulation by an antiviral compound may be a serious side effect. Nevertheless endotoxin-induced neovascularization can be suppressed by simultaneous treatment with b-cyclodextrin sulphate and glucocorticoids (Folkman et al., 1989). The same co-treatment may possibly be used to improve antiviral action of cyclodextrin sulphates, but such a combination therapy may not be free of complications. Glucocorticoids also affect the stability of various cellular membranes. Treatment of cells in vitro by glucocorticoids is known to stabilize their lysozymes. Glucocorticoids affect both the proliferative capacity of the cells (Cristofalo, 1972) and cytopathic effects of rabies viral infection. Furthermore, it has been reported that the cytopathic effects of rabies and of yellow fever viruses were inhibited while those of the polio virus were only mildly affected (Hannoun et al., 1965). Consequently, in this work we evaluated effects of a glucocorticoid and of glucocorticoid-a-cyclodextrin sulphate combination on HIV-1 replication.

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Bossennec, V., M. Petitou, and B. Perly. "1H-n.m.r. investigation of naturally occurring and chemically oversulphated dermatan sulphates. Identification of minor monosaccharide residues." Biochemical Journal 267, no. 3 (May 1, 1990): 625–30. http://dx.doi.org/10.1042/bj2670625.

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The 1H-n.m.r. spectra of various dermatan sulphate preparations present, besides the major signals of the basic disaccharide unit, several other minor signals. We have assigned most of them by n.m.r., using two-dimensional proton-proton double-quantum-correlation and nuclear-Overhauser-effect spectroscopy experiments. This allowed us to identify 2-O-sulphated L-iduronic acid and D-glucuronic acid residues as well as 6-sulphated N-acetylgalactosamine (presumably 4-O-sulphated as well). 2-O-Sulphated iduronic acid was present to similar extents (6-10% of total uronic acids) in pig skin dermatan sulphate and pig intestine dermatan sulphate, whereas glucuronic acid represented 17% of the uronic acid of pig skin dermatan sulphate and was virtually absent (1%) from the other preparation. 6-O-Sulphated N-acetylgalactosamine was present in minor amounts in pig intestine dermatan sulphate only. The influence of sulphation of iduronic acid units on their conformation was assessed by using chemically oversulphated pig intestine dermatan sulphate. Introduction of sulphate groups in this unit in dermatan sulphate tends to shift the conformational equilibrium towards the 1C4 conformer.

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Zarubica, Aleksandra, and Goran Boskovic. "Precursor type affecting surface properties and catalytic activity of sulfated zirconia." Acta Periodica Technologica, no. 38 (2007): 105–13. http://dx.doi.org/10.2298/apt0738105z.

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Zirconium-hydroxide precursor samples are synthesized from Zr-hydroxide, Zr-nitrate, and Zr-alkoxide, by precipitation/impregnation, as well as by a modified sol-gel method. Precursor samples are further sulphated for the intended SO4 2- content of 4 wt.%, and calcined at 500-700oC. Differences in precursors? origin and calcination temperature induce the incorporation of SO4 2- groups into ZrO2 matrices by various mechanisms. As a result, different amounts of residual sulphates are coupled with other structural, as well as surface properties, resulting in various catalytic activities of sulphated zirconia samples. Catalyst activity and selectivity are a complex synergistic function of tetragonal phase fraction, sulphates contents, textural and surface characteristics. Superior activity of SZ of alkoxide origin can be explained by a beneficial effect of meso-pores owing to a better accommodation of coke deposits.

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SMART, M. E., R. COHEN, D. A. CHRISTENSEN, and C. M. WILLIAMS. "THE EFFECTS OF SULPHATE REMOVAL FROM THE DRINKING WATER ON THE PLASMA AND LIVER COPPER AND ZINC CONCENTRATIONS OF BEEF COWS AND THEIR CALVES." Canadian Journal of Animal Science 66, no. 3 (September 1, 1986): 669–80. http://dx.doi.org/10.4141/cjas86-074.

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Pregnant Hereford cows (n = 99) and heifers (n = 98) whose ration contained 10 mg Cu kg−1 DM and 20 mg Zn kg−1 DM were assigned to two treatments. The water supply (sulphated water) for one group contained 500 mg S L−1 as sulphates. The sulphates in the water (desulphated) for the other group had been decreased to 42 mg S L−1 by reverse osmosis. Changes in plasma and liver copper and zinc concentrations were monitored in the cows and their calves during the winter drylot and pasture periods. The initial plasma and liver copper concentrations in all cows indicated a deficient status. At calving, the plasma copper concentration had declined in both groups. The greatest decrease was evident in the cows on sulphated water. At calving, the liver copper concentration had declined in both water treatment groups but was lowest in the cattle on the sulphated water. After calving, plasma and liver copper concentrations in both groups increased; this increase was greatest in the cows drinking the desulphated water. Water treatment had no effect on the copper status of the nursing calves. Water purification had a positive effect on the body weights of first and second calf heifers. Although the zinc status was normal, the plasma zinc declined and liver zinc increased in the cows at calving. These changes were independent of water treatment. When the sulphur in the drinking water was decreased to 42 mg L−1 by reverse osmosis there was a positive effect on the copper status of beef cows. Further research is required into higher dietary copper intakes, as 10 mg Cu kg−1 DM was not adequate in improving the deficient copper status of these cattle. Key words: Water sulphates, copper, zinc, beef cattle

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10

Wegrowski, Y., V. Paltot, P. Gillery, B. Kalis, A. Randoux, and F. X. Maquart. "Stimulation of sulphated glycosaminoglycan and decorin production in adult dermal fibroblasts by recombinant human interleukin-4." Biochemical Journal 307, no. 3 (May 1, 1995): 673–78. http://dx.doi.org/10.1042/bj3070673.

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Interleukin-4 (IL-4) is a pleiotropic cytokine expressed by inflammatory cells. Previous work from our laboratory has shown that it stimulates collagen synthesis in fibroblasts. Here we report the effects of recombinant human IL-4 on glycosaminoglycan (GAG) and proteoglycan synthesis in normal dermal fibroblasts from adult donors. IL-4 (10 and 100 units/ml) induced a dose-dependent increase of [3H]glucosamine and [35S]sulphate incorporation into total GAGs. The analysis of the different GAG fractions indicated the enhanced synthesis of dermatan/chondroitin sulphates. IL-4 had no effect on hyaluronan synthesis. The increase of sulphated GAG synthesis was correlated with an increase of proteoglycans in the culture medium. Decorin was identified as the major chondroitin/dermatan sulphate-containing proteoglycan in the culture medium of fibroblasts. Its synthesis was strongly stimulated by IL-4. Both the core-protein synthesis and mRNA expression were enhanced, indicating that the cytokine acted, at least in part, at the pre-translational level. These results indicate that IL-4 is able to modulate not only collagen, but also proteoglycan, production by human fibroblasts. Their implications in physiopathological processes such as wound healing or fibrosis is suggested.

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Dissertations / Theses on the topic "Effect of sulphates on"

1

陳國柱 and Kwok-chu Timmy Chan. "Calcium sulphate hemihydrate: effect of humidity in storage." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B21129526.

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Abdi, Mahmoud Reza. "Effect of calcium sulphate on lime-stabilised kaolinite." Thesis, University of South Wales, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304789.

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Chan, Kwok-chu Timmy. "Calcium sulphate hemihydrate effect of humidity in storage /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21129526.

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Nyabeze, Wadzanai. "The effect of copper sulphate on froth stability." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/20123.

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Froth flotation is a mineral beneficiation process implemented in the recovery of valuable minerals from unwanted gangue material. Copper sulphate is used as an activator in the flotation of base metal sulphides (BMS) as it promotes interaction of collector molecules with the mineral surfaces. It is also used in certain platinum group minerals (PGM) flotation operations in South Africa although the mechanism by which improvements in flotation performance are achieved is not well understood. Some investigations suggest that changes in flotation performance are affected by changes in the froth phase, rather than activation of minerals by true flotation in the pulp zone. The present study focussed on exploring the effect of using copper sulphate as an activator and sodium isobutyl xanthate (SIBX) as a collector on froth stability in Platinum Group Mineral (PGM) operations. This was done on two PGM containing ores namely Merensky and UG2 (Upper Group 2) ores from the Bushveld Complex of South Africa. The dynamic froth stability factor (Σ) and froth half life time (t1/2) were used as measures of froth stability. These were obtained using a froth stability column which is a non-overflowing system. The effect of activation on pure minerals in the pulp phase was also analysed using a microflotation cell which eliminates the froth phase and hydrodynamic interactions found in normal flotation cells. The microflotation cell was used as a measure of hydrophobicity which was directly linked to the flotation recovery. The adsorption of reagents onto the mineral surfaces was confirmed by the use of zeta potential and ethylenediaminetetraacetic acid (EDTA) extraction of surface products. The pulp phase effects were analysed through the floatability of pure minerals and analysis of surface products after copper sulphate activation and these were linked to the outcomes from the froth stability tests. It was hypothesised that copper sulphate destabilised the froth for a Merensky ore and for a UG2 ore but due to different reasons because of the mineralogical compositions of the two ores. For the Merensky ore, the froth destabilisation was postulated to be due to the formation of Cu(I) on the base metal sulphide surfaces which promotes the formation of hydrophobic copper-xanthate species. This would result in an increase in contact angle which promotes bubble coalescence. For the UG2 ore which has far less base metal sulphides than Merensky ore, it was hypothesised that the destabilisation of the froth would be due to the non-selective precipitation of hydrophilic colloidal hydroxides on mineral surfaces which reduce the amount of hydrophobic froth stabilising particles reporting to the froth phase.

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Roberts, Michael Austin. "Molecular genetics of sulphate assimilation in Arabidopsis thaliana." Thesis, University of St Andrews, 1997. http://hdl.handle.net/10023/14347.

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The steps involved in plant reductive assimilation of sulphate to sulphide for incorporation into cysteine are not clear. The aim of the project described in this thesis was the isolation of genes encoding sulphate assimilation enzymes which will provide molecular tools for unravelling this key metabolic pathway. Functional complementation of the Escherichia coli cysteine auxotrophic strain JM15 (serine acetyltransferase deficient) using an Arabidopsis thaliana cDNA library in the expression vector YES resulted in the isolation of at least three members of an A. thaliana multigene family encoding serine acetyltransferase. Characterisation of one clone, Sat-1, showed that it conferred serine acetyltransferase activity (with apparent KM for substrates acetyl CoA and L-serine of 0.043 and 3.47 mM, respectively) on strain JM15. The 1515 bp full-length cDNA encodes a deduced protein of 391 amino acids, SAT-1, that has significant identity with bacterial and plant serine acetyltransferases, and that contains a putative N-terminal organellar targeting peptide. Southern hybridisation indicated that Sat-1 is present as a single copy in A. thaliana, while northern analysis revealed a single message of 1.5 kb. Using the A. thaliana cDNA library in the expression vector YES, cDNAs encoding a novel putative "APS reductase" were obtained by functional complementation of E. coli cysteine auxotrophic strains JM81A (adenosine 5'-phosphosulphate [APS] kinase deficient) and JM96 (3'-phosphoadenosine-5'-phosphosulphate [PAPS] reductase deficient). Retransformation of three clones (Papsr-19, Papsr-26 and Papsr-43) encoding different putative APS kinase isoforms into strain JM96 conferred low PAPS reductase activity on the mutant, although this activity was thioredoxin-independent unlike wild-type bacterial activity. The putative APS reductase has a PAPS reductase-like C-terminal domain, but further analysis demonstrated that the enzyme accepts APS in preference to PAPS as substrate and has a thioredoxin-like C-terminal domain. Isolation and characterisation of these genes invites a new hypothesis for plant reductive sulphate assimilation and provides direction for future research.

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Hartell, Julie Ann. "Sodium sulphate attack on concrete: effect on mechanical properties." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19233.

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Traditionally, the extent of sulphate attack is qualified through visual rating as suggested by the Portland Cement Association, or quantified by the percent expansion of slender bars submerged in sulphate solution, the ASTM C 1012 standard. There are no standard methods that take into account the change in engineering properties due to sulphate attack's deleterious mechanisms. Moreover, the exposure regime used to evaluate sulphate attack, complete immersion, is not necessarily representative of that encountered in the field. For these reasons, the objective of this thesis is to quantify the degree of sodium sulphate attack through the degradation of mechanical properties, specifically the compressive and splitting tensile load capacities of standard cylindrical specimens. The research work presented herein also utilizes a novel exposure regime wherein the specimens are only partially submerged in 5% sodium sulphate solution, creating an evaporation front similar to that of field exposure.
Traditionnellement, la méthode par inspection visuelle est suggérée pour qualifier le degré d'une attaque sulfatique du béton. Pour sa part, la norme ASTM C 1012 est régulièrement utilisée dans le cas où le pourcentage d'allongement d'un prisme en mortier submergé dans une solution de sulfate de sodium quantifie la résistance du ciment composant le mortier par rapport aux mécanismes d'expansion. Toutefois, le changement des propriétés d'ingénierie du béton, causé par les effets néfastes de l'attaque sulfatique, n'est pas pris en considération dans les normes existantes. Ainsi, le régime d'exposition aux sulfates de la norme ASTM C 1012, soit l'immersion complète, ne représente pas nécessairement ceux des ouvrages en béton. Pour ces raisons, l'objectif de cette thèse est de quantifier le niveau d'une attaque sulfatique à travers la dégradation des propriétés mécaniques du béton, soient les capacités en compression et tension d'un cylindre standard en béton. De plus, les travaux de recherche incluent un nouveau régime d'exposition afin de recréer un front d'évaporation similaire à celui d'un ouvrage en béton semi-saturé. Comparativement, les spécimens en béton sont submergés jusqu'à leur mi-hauteur dans une solution de sulfate de sodium.

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Hasell, Natalie. "The effect of sub-grid scale clouds on sulphate production." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ64368.pdf.

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林淑儀 and Shirley Lam. "Effect of sulphate on the anaerobic degradation of organicpollutants (benzoate)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31252886.

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Turan, Nahid. "The effect of plasticisers and related chemicals on sulphate supply enzymes." Thesis, University of Birmingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433746.

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Lam, Shirley. "Effect of sulphate on the anaerobic degradation of organic pollutants (benzoate) /." Hong Kong : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13813523.

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Books on the topic "Effect of sulphates on"

1

Schupp, Robert. Untersuchungen zur Schwefelernährung der Fichte (Picea abies L.): Die Bedeutung der Sulfatassimilation und des Transports von Thiolen. Frankfurt/M: Wissenschafts-Verlag Dr. W. Maraun, 1991.

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Ludlow, Lawrence. Effect of sulphate on leachate treatment. Ottawa: National Library of Canada, 1990.

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Khan, Khizar H. Corrosivity of acidic sulphates. Ottawa: National Library of Canada, 1996.

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Harter, P. Sulphates in the atmosphere. London: IEA Coal Research, 1985.

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Sams, James I. Effects of coal-mine drainage on stream water quality in the Allegheny and Monongahela River basins: Sulfate transport and trends. Lemoyne, Pa: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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Sams, James I. Effects of coal-mine drainage on stream water quality in the Allegheny and Monongahela River basins: Sulfate transport and trends. Lemoyne, Pa: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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Sams, James I. Effects of coal-mine drainage on stream water quality in the Allegheny and Monongahela River basins: Sulfate transport and trends. Lemoyne, Pa: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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Sams, James I. Effects of coal-mine drainage on stream water quality in the Allegheny and Monongahela River basins: Sulfate transport and trends. Lemoyne, Pa: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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Mohr, Horst Diedrich. Untersuchungen über die Einsatzmöglichkeiten von "Grünsalz" zur Vorbeugung und Behebung der Chlorose im Weinbau. Berlin: Kommissionsverlag P. Parey, 1987.

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Ohmann, L. F. Properties of soils and tree wood tissue across a Lake States sulfate deposition gradient. St. Paul, Minn: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1991.

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Book chapters on the topic "Effect of sulphates on"

1

Barnes, G. E. "The Effects of Groundwater Flow Pattern on the Concentration of Soluble Sulphates." In Contaminated Soil, 115–20. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-5181-5_10.

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Lilley, K. J., Adrian J. Wright, David Farrar, and J. E. Barralet. "Cement from Nanocrystalline Hydroxyapatite: Effect of Sulphate Ions." In Bioceramics 17, 137–40. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-961-x.137.

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Falshaw, Ruth, Richard H. Furneaux, and George C. Slim. "Carbohydrate sulphates." In Carbohydrates, 107–49. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-9281-9_3.

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Oyekola, Oluwaseun O., Robert P. van Hille, and Susan T. L. Harrison. "Effect of Sulphate Concentration on the Community Structure and Activity of Sulphate Reducing Bacteria." In Advanced Materials Research, 513–15. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-452-9.513.

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Shivanshi, Arvind Kumar Jha, Ankush Kumar Jain, and M. Parwez Akhtar. "Effect of Sulphate Contamination on Lime-Stabilized Black Cotton Soil." In Lecture Notes in Civil Engineering, 51–61. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9988-0_6.

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Liaaen-Jensen, Synnøve. "Partial Synthesis of Sulphates." In Carotenoids, 295–300. Basel: Birkhäuser Basel, 1996. http://dx.doi.org/10.1007/978-3-0348-9323-7_16.

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Lunden, Arnold. "Ionic Conduction in Sulphates." In Fast Ion Transport in Solids, 181–201. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1916-0_10.

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Nedunuri, Aparna Sai Surya Sree, and Salman Muhammad. "Effect of Sodium Sulphate on Rheological Behaviour of Alkali Activated Slag Binders." In RILEM Bookseries, 71–78. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22566-7_9.

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Sakhawat, S. Shah, and Ejaz-ur-Rehman. "Effect of Temperature and Aprotic Solvents on the CMC of Sodium Dodecyl Sulphate." In Interactions of Water in Ionic and Nonionic Hydrates, 251–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-72701-6_45.

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Narayani, R., and P. C. Sabumon. "Effect of Sulphate on Fermentative Sludge Hydrolysis Cum Biodegradation of Waste Activated Sludge." In Waste Management and Resource Efficiency, 639–50. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7290-1_53.

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Conference papers on the topic "Effect of sulphates on"

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A R, Sindhu, Minukrishna P, and B. M. Abraham. "Experimental Study on the Impact of Type of Sulphate in Lime Stabilised Clays." In International Web Conference in Civil Engineering for a Sustainable Planet. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.112.14.

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Marine clays are distinguished by high compressibility and low shear strength. It has been reported that lime stabilisation is very much potent, and can be used as an ideal ground improvement technique in the case of marine clays. Cochin marine clays are sometimes abundant in primary and secondary sources of sulphates of sodium, lithium, potassium and calcium. Different types of sulphates may have different impact on lime stabilised clays. Present study investigates the effect of different types of sulphates in lime treated marine clays. Marine clay samples were collected by auger boring and all the physical properties were determined. Sulphate content in clay was also found. Clay samples were treated with 6% of lime and 4% of sodium sulphate, lithium sulphate and potassium sulphate and were kept for various curing periods of zero days, 1 week, 1 month, 3 months and 6 months. Atterberg limits, free swell index, unconfined compressive strength and pH of all samples were determined. It was found that the plasticity and swelling characteristics of lime treated clay were influenced by the addition of sulphates. It was also found that all the three types of sulphates had detrimental effect on the gain in strength of lime stabilised soil. But the effect varies significantly with the type of sulphate present in the clay. This necessitates the importance of determination of the type sulphate present in the marine clay, before planning the soil stabilisation using lime.

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Luo, X. L., Z. L. Gu, J. Chai, X. Z. Meng, Z. Lu, and B. X. Zhu. "Investigation on Moisture and Salt Transport in Heterogeneous Porous Media of Relics-Soil in Archaeology Museum." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39488.

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The unearthed relics in archaeology museum are usually being presented to the public as still partly connected to their primitive environment. Migration of moisture may cause the carbonate from the soil being deposited on the relic’s surface and some carbonates would react with the penetrating SO2 to form sulphates, which will change the relics’ primitive form and material properties. In this research, experiments were carried out to clarify the migration mechanism of water and salt in a soil-relic-atmosphere coupling environment. The research results show that there existing a one-way transport of moisture from the soil-relics to the air even though the relative humidity approximates to 100%. Meanwhile, the effects of soil properties, air temperature, relative humidity and salt concentration on the transports of moisture and salt are identified.

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Felicio Dornelas, Vitória, Cristiano Severo AIolfi, Valéria Santos, Daniel Ribeiro, Fabio de Assis Ressel Pereira, Andre Martins, and Ana Paula Meneguelo. "Effect of barium sulphate precipitation in a pressurized environment." In 18th Brazilian Congress of Thermal Sciences and Engineering. ABCM, 2020. http://dx.doi.org/10.26678/abcm.encit2020.cit20-0668.

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Hou, Bin, Yan Huang, Xiaoli Ma, and Jin Wang. "Effect of Potassium Sulphate on Fruit Quality of lBlack Baraldor Grape." In 2018 7th International Conference on Energy and Environmental Protection (ICEEP 2018). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/iceep-18.2018.263.

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Fackrell, John E., Richard J. Tabberer, John B. Young, and Ian R. Fantom. "Modelling Alkali Salt Vapour Deposition in the British Coal Topping Cycle System." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-177.

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The British Coal Topping Cycle is a proposed advanced coal-fired power generation system in which gases derived from the coal and containing low levels of alkali vapours are passed to a gas turbine. The deposition of these vapours onto the turbine blades needs to be assessed because deposited alkali salts may accelerate corrosion and hence reduce blade lifetimes. A model for the thermochemical behaviour was derived by assuming frozen chemistry in the external and boundary layer flows, but equilibrium at the surface and within the deposit, including an allowance for non-ideal behaviour in the deposit. The model is currently formulated for sodium and potassium chlorides and sulphates in the deposit and can deal with deposition to either a solid or liquid deposit. The boundary layer mass transfer has been calculated by both a simple heat transfer analogy model and a numerical solution of the two-dimensional diffusion equation within the boundary layer. Some examples of general results obtained with the model are described, including a comparison of the effects of different deposit phase, non-ideal behaviour and film cooling. Some predictions are compared with measurements of alkali salt deposition obtained in experiments simulating the conditions expected in a Topping Cycle system.

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Luo, Peng, and Zhong Liu. "Effect of Sulphate Acid Calalyzed Ethanol Cooking on Enzymatic Hydrolysis of Wheat Straw." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5518006.

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Malik, Chirag, A. Pandey, Akash Katoch, S. P. Lochab, and Birendra Singh. "A study of Co-doping effect on thermoluminescence properties of potassium calcium sulphate." In DAE SOLID STATE PHYSICS SYMPOSIUM 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4980275.

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Upadhyay, Trilok Chandra, Ashish Nautiyal, P. K. Bajpai, K. S. Ojha, and K. N. Singh. "Effect of Electric Field on Dielectric and Acoustic Properties of Triglycine Sulphate Crystal." In XVI NATIONAL SEMINAR ON FERROELECTRICS AND DIELECTRICS (NSFD-XVI). AIP, 2011. http://dx.doi.org/10.1063/1.3644410.

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Macingova, Eva. "SULPHATES�REMOVAL�FROM�ACID�MINE�DRAINAGE�." In SGEM2012 12th International Multidisciplinary Scientific GeoConference and EXPO. Stef92 Technology, 2012. http://dx.doi.org/10.5593/sgem2012/s20.v5111.

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Duzgun, Nuri, Hıdır Esme, Pınar Karabağlı, Mehmet Sinan İyisoy, and Melike Duran. "Effect of morphine sulphate on histopathologic changes in lung tissue after ischemia reperfusion injury." In ERS International Congress 2018 abstracts. European Respiratory Society, 2018. http://dx.doi.org/10.1183/13993003.congress-2018.pa4298.

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Reports on the topic "Effect of sulphates on"

1

Heffetz, Ori, and John List. Is the Endowment Effect a Reference Effect? Cambridge, MA: National Bureau of Economic Research, January 2011. http://dx.doi.org/10.3386/w16715.

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Martindale, Addie K. Achromatizing Effect. Ames: Iowa State University, Digital Repository, 2017. http://dx.doi.org/10.31274/itaa_proceedings-180814-227.

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Ericson, Keith M. Marzilli, and Andreas Fuster. The Endowment Effect. Cambridge, MA: National Bureau of Economic Research, August 2013. http://dx.doi.org/10.3386/w19384.

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Tambe, Milind, and Paul S. Rosenbloom. On Masking Effect. Fort Belvoir, VA: Defense Technical Information Center, July 1993. http://dx.doi.org/10.21236/ada269593.

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Gerber, Alexander. Hall Effect Spintronics. Fort Belvoir, VA: Defense Technical Information Center, April 2011. http://dx.doi.org/10.21236/ada549847.

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Robinson, David. The Scissors Effect. Oxford Institute for Energy Studies, August 2015. http://dx.doi.org/10.26889/9781784670368.

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Inman, Robert. The Flypaper Effect. Cambridge, MA: National Bureau of Economic Research, December 2008. http://dx.doi.org/10.3386/w14579.

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Rose, Andrew, and Mark Spiegel. The Olympic Effect. Cambridge, MA: National Bureau of Economic Research, April 2009. http://dx.doi.org/10.3386/w14854.

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Seybold, Patricia. The Network Effect. Boston, MA: Patricia Seybold Group, February 2003. http://dx.doi.org/10.1571/bp2-27-03cc.

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Glaeser, Edward, and Andrei Shleifer. The Curley Effect. Cambridge, MA: National Bureau of Economic Research, May 2002. http://dx.doi.org/10.3386/w8942.

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