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Now showing items 12-31 of 116

Assessing milk quality using the electronic nose

Govender, Samantha (2007)

There are many ways for milk and dairy products to develop flavour defects. Sensory evaluation, has been the traditional approach to characterize off flavours. The need for odour sensing devices becomes greater when volatile ...
An assessment of the conformational profile of bombesin and its mammalian analogues using computational chemistry methods

Sharma, Parul (2011)

Understanding the dynamics and mechanism of protein folding continues to be one of the central problems in molecular biology. Peptide folding experiments characterize the dynamics and molecular mechanisms of the early ...
Azide-alkyne cycloaddition en route to 1H-1,2,3-triazole-tethered 7-chloroquinoline-isatin chimeras: Synthesis and antimalarial evaluation

Raj, Raghu; Singh, Pardeep; Singh, Parvesh; Gut, Jiri; Rosenthal, Philip J.; Kumar, Vipan (Elsevierhttp://www.sciencedirect.com/science/article/pii/S0223523413000603/pdfft?md5=981f7a91cb361319d6a41ded99e81abd&pid=1-s2.0-S0223523413000603-main.pdf, 2013-04)

We describe the synthesis and antimalarial activities of 1H-1,2,3-triazole tethered 7-chloroquinoline-isatin hybrids. Activity against cultured parasites was dependent on the C-5 substituent of the isatin ring as well as ...
Bioactivity of famine food plants from the family: Amaranthaceae

Singh, Alveera (2009)

Information regarding the nutritional value of wild food plants in Africa and current information varies from source to source. Prior to commercialization of wild foods the nutritional, ethnobotanical, medical, chemical, ...
Bioconversion of biodiesel-derived crude glycerol waste to 1,3 propanediol and gellan using adapted bacterial isolates

Raghunandan, Kerisha (2013-09-19)

The continual growth of the global biodiesel industry has resulted in a proportional increase in crude glycerol production. The by-production of glycerol waste during the manufacture of biodiesel has, with recent ...
Bioproduction of riboflavin by fungi using spent industrial oils

Khan, Nazihah (2011)

Riboflavin (vitamin B2), an essential water-soluble vitamin is commercially produced because it cannot be synthesized by vertebrates. Although this vitamin is produced chemically, bioproduction is a better option since it ...
Biosynthesis and antibacterial activity of silver and gold nanoparticles from the leaf and callus extracts of Amaranthus dubius, Gunnera perpensa, Ceratotheca triloba and Catharanthus roseus

Patel, Naazlene (2013-09-17)

The biosynthesis of NPs has many advantages over the tedious, expensive and toxic physical and chemical methods of synthesis. Plants are stocked with valuable metabolites that are capable of reducing metal salts to form ...
Characterisation of the microbial communities present in an anaerobic baffled reactor utilising molecular techniques

Lalbahadur, Tharnija (2005)

The provision of safe and sanitary water is a constitutional right and above all, a necessity of life. As a result of the rapid urbanisation and the past policies of apartheid, a large population of South Africa dwell in ...
Chemical composition of essential oil of Psidium cattleianum var. lucidum (Myrtaceae)

Chalannavar, Raju K.; Narayanaswamy, V. K; Baijnath, Himansu; Odhav, Bharti (Academic Journalshttp://www.academicjournals.org/AJB, 2012-04-12)

The aim of this study was to investigate the essential oil composition of Psidium cattleianum var. lucidum from South Africa. The essential oils were extracted by hydrodistillation and the components were identified by gas ...
Chemoprotective action of natural products on cultured human epithelial cells exposed to aflatoxin B1

Reddy, Lalini (2005)

Previous studies indicate that a mutation in the non-oncogenic p53 gene is epidemiologically linked to human HCC (Ozturk, 1991; Chan et al., 2003). Hsu et al. (1991) found this link in Chinese, South African and Asian ...
Cibulka correlation for ternary excess molar volumes for [MOA]⁺[Tf₂N]⁻ at different temperatures

Tywabi, Zikhona (2012-08-20)

In this work, the binary and ternary excess molar volumes have been calculated from the density, ρ, measurements using an Anton Paar (DMA 38) vibrating tube digital densimeter. One component of the ternary systems studied ...
Comment on invalid JWKB unstable solutions of combined inertial-Rossby waves

McKenzie, J. F. (Annales Geophysicaewww.ann-geophys.net/30/571/2012/, 2012)
Comparative analysis of genetically modified maize by implementation of a half-seed extraction technique

Pienaar, Fernando (2007)

The development of transgenic plants resulted in the need to utilize the various molecular methods (e.g., ELISA, real - time PCR etc.) for the detection or analysis of the presence or absence of a specific trait in a ...
A comparative analysis of stability and structure-functional relationships of different xylanases

Tabosa-Vaz, Sacha (2013-07-30)

A comparative thermostability analysis of different partially purified xylanases from Rhodothermus marinus, Bacillus halodurans, Thermomyces lanuginosus and Pulpzyme HC was studied using differential scanning fluorometry ...
Complete group classification of systems of two linear second-order ordinary differential equations

Moyo, Sibusiso; Meleshko, S. V.; Oguis, G. F. (Elsevierhttp://dx.doi.org/10.1016/j.cnsns.2013.04.012, 2013-11)

We give a complete group classification of the general case of linear systems of two second-order ordinary differential equations excluding the case of systems which are studied in the literature. This paper gives the ...
Computational studies of the folding patterns of small and medium-size polypeptides

Mokoena, Paul (2010)

This study involved a series of molecular dynamics (MD) simulations applied to case studies of small and medium-size polypeptides to assess the thermodynamics of their folding characteristics. Peptide folding is a complex ...
Correlation and prediction of the physical and excess properties of the ionic liquid 1-butyl-3-methylimidazolium methyl sulphate with several alcohols at T= (298.15 to 313.15) K

Singh, Sangeeta (2013-07-30)

The thermodynamic properties of binary liquid mixtures using an ionic liquid (IL) with alcohols were determined at different temperatures. The ionic liquid used was 1-butyl-3- methylimidazolium methylsulphate [BMIM]+[MeSO4]-. ...
Cycloaddition reactions of Azatrienes with Sulfene

Bisetty, Krishna; Singh, Parvesh (Scientific Researchhttp://dx.doi.org/10.4236/ijoc.2012.22019, 2012-04-23)

Unprecedented cycloaddition reactions of azatrienes (1) with sulfene leading to the synthesis of functionalized thiazine-dioxide derivatives (5) are described. The reactions were found be highly regioselective resulting ...
Cytotoxicity and gene expression of selected apoptotic markers in the human laryngeal carcinoma cell line (HEp-2) by Bulbine spp. fractions

Singh, Rishan (2013-07-30)

Apoptosis, or programmed cell death, is a process which is pivotal in eliminating damaged, infected, or unwanted cells from the body. It has been studied in numerous types of cell lines ranging from normal to infected ...
Densities, speeds of sound, and refractive indices for binary mixtures of 1-butyl-3-methylimidazolium methyl sulphate ionic liquid with alcohols at T = (298.15, 303.15, 308.15, and 313.15) K

Singh, Sangeeta; Aznar, Martin; Deenadayalu, Nirmala (Elsevierhttp://dx.doi.org/10.1016/j.jct.2012.08.030, 2012-09-24)

Experimental densities, speeds of sound, and refractive indices of the binary mixtures {1-butyl-3-methylimidazolium methylsulphate ([BMIM]+[MeSO4]−) + methanol, or 1-propanol, or 2-propanol, or 1-butanol} were measured ...

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