Thesis (MSc (Paraclinical Sciences, Veterinary Science)--University of Pretoria, 2009. / Includes bibliographical references. Also available in print format.

Vilnius Pedagogical University Faculty of Lithuanian Philology Master thesis Textual analysis of Mamertas Indriliūnas literary archive Eglė Valantavičienė The master thesis “Textual analysis of Mamertas Indriliūnas literary archive” deals with the M. Indriliūnas (1920-1945), who was Lithuanian poet, critic, translator and resistant, archive of extracts. Analysis is based on the method of genetic criticism. M. Indriliūnas archive of extracts consists of other authors’ minds and ideas taken out from books which he had read. In this master thesis the extracts are analyzed by 2 levels. First of all textual decoding of extracts, establishment of attribution and genetic classifications are carried out. On the second level results of classifications are analyzed and interpreted using the method of genetic criticism. Extracts are classified according to particular criteria of similarity: according to the language of extracts, their titles and directions of disciplines. From these classifications following results are worked out: most extracts are in the Lithuanian, German and French languages; literature and philosophy are disciplines which M. Indriliūnas studied the most thorough; principal subjects of extracts are related to the relationship between God and human being, to Christianity and religion, philosophy, art and creation. According to these classification results conclusion can be drawn that M. Indriliūnas world-view was influenced by French and German aesthetic and... [to full text]

Plant-parasitic nematodes (PPN) are a serious problem in vegetable production and can cause severe damage to several crops. In rural, low-input farming nematode damage is much higher and yields can be completely destroyed. Some Commercial nematicides have been withdrawn from the market due to health and environment concerns. These need to be replaced by alternative nematode control strategies of which soil amendments is one alternative. Nine non-crop plant species used in various forms in traditional healing, viz. Cassia abbreviata, Cissus cactiformis, Euphorbia ingens, Ipomoea kituiensis, Maerua angolensis, Senna petersiana, Synadenium cupulare, Tabernaemontana elegans and Urginea sanguinea were screened under glasshouse conditions for their effect on the plant-parasitic nematode (PPN) (Meloidogyne incognita) on tomato. Subsequent assessments in microplots and in the field supported the glasshouse results in terms of suppression of root-knot nematode numbers with crudely milled soil amendments of C. cactiformis, M. angolensis and T. elegans. Tomato growth responses in these trials showed a tendency of phytotoxic effects after treatment of soil with crude leaf meal of E. ingens and S. cupulare. In the microplot study, the overall soil-amendment treatment effect was greater than that of three soil types on the performance of the tomato, although soil type might have had an effect on nematode suppression. Due to lack of correspondence between tomato leaf nutrient contents and the nutrient contents of the soil amendments it is suggested that these noncrop materials had negligible soil fertilization effects. In vitro bioassay studies confirmed that extracts of varying polarity of both plant products M. angolensis and T. elegans might be toxic to J2 stages of the root-knot nematode M. incognita. All extracts tested of M. angolensis caused immobility of J2, whereas only three extracts of T. elegans affected mobility of J2 adversely. Duration to 50 % effect, as well as extract concentration to cause immobility of the J2 varied but where movement ceased the J2 did not recover for up to 98 hours. This study has demonstrated the potential of locally available botanical materials for use as amendments in plant-parasitic nematode management and tomato growth and productivity improvement. This would particularly be true for small-scale application in subsistence agriculture. It is believed that these amendments could be used as control measures in integrated nematode control strategies. Their potential use could be adopted by small-scale farming communities, domestic gardeners and commercial farmers in the Mpumalanga, Limpopo and Kwazulu/Natal Provinces of South Africa where the relevant materials are available in useful quantities. Over-exploitation of natural resources should be avoided at all cost, however. / Thesis (PhD (Environmental Sciences))--North-West University, Potchefstroom Campus, 2013

Plant-parasitic nematodes (PPN) are a serious problem in vegetable production and can cause severe damage to several crops. In rural, low-input farming nematode damage is much higher and yields can be completely destroyed. Some Commercial nematicides have been withdrawn from the market due to health and environment concerns. These need to be replaced by alternative nematode control strategies of which soil amendments is one alternative. Nine non-crop plant species used in various forms in traditional healing, viz. Cassia abbreviata, Cissus cactiformis, Euphorbia ingens, Ipomoea kituiensis, Maerua angolensis, Senna petersiana, Synadenium cupulare, Tabernaemontana elegans and Urginea sanguinea were screened under glasshouse conditions for their effect on the plant-parasitic nematode (PPN) (Meloidogyne incognita) on tomato. Subsequent assessments in microplots and in the field supported the glasshouse results in terms of suppression of root-knot nematode numbers with crudely milled soil amendments of C. cactiformis, M. angolensis and T. elegans. Tomato growth responses in these trials showed a tendency of phytotoxic effects after treatment of soil with crude leaf meal of E. ingens and S. cupulare. In the microplot study, the overall soil-amendment treatment effect was greater than that of three soil types on the performance of the tomato, although soil type might have had an effect on nematode suppression. Due to lack of correspondence between tomato leaf nutrient contents and the nutrient contents of the soil amendments it is suggested that these noncrop materials had negligible soil fertilization effects. In vitro bioassay studies confirmed that extracts of varying polarity of both plant products M. angolensis and T. elegans might be toxic to J2 stages of the root-knot nematode M. incognita. All extracts tested of M. angolensis caused immobility of J2, whereas only three extracts of T. elegans affected mobility of J2 adversely. Duration to 50 % effect, as well as extract concentration to cause immobility of the J2 varied but where movement ceased the J2 did not recover for up to 98 hours. This study has demonstrated the potential of locally available botanical materials for use as amendments in plant-parasitic nematode management and tomato growth and productivity improvement. This would particularly be true for small-scale application in subsistence agriculture. It is believed that these amendments could be used as control measures in integrated nematode control strategies. Their potential use could be adopted by small-scale farming communities, domestic gardeners and commercial farmers in the Mpumalanga, Limpopo and Kwazulu/Natal Provinces of South Africa where the relevant materials are available in useful quantities. Over-exploitation of natural resources should be avoided at all cost, however. / Thesis (PhD (Environmental Sciences))--North-West University, Potchefstroom Campus, 2013

Darbo tikslas – pagaminti skystuosius etanolinius šeivamedžių žiedų ir uogų ekstraktus bei sirupus ir įvertinti kaip ekstrahento koncentracija ir kiekis lemia pagamintų preparatų kokybę. Darbo uždaviniai: 1. Remiantis mokslo literatūros duomenimis parinkti tinkamą ekstrahentą, racionalų ekstrahavimo metodą bei optimalų žaliavos ir ekstrahento santykį gaminamiems skystiesiems ekstraktams iš šeivamedžių žiedų ir uogų. 2. Taikant analizės metodus įvertinti ekstrahento koncentracijos įtaką pagamintų skystųjų ekstraktų kokybei, nustatant fenolinių junginių kiekį, sausą likutį, antioksidacinį aktyvumą, antocianinų kiekį. 3. Sirupų gamybai parinkti geriausiomis savybėmis pasižyminčius šeivamedžių uogų ir žiedų skystuosius ekstraktus. 4. Taikant analizės metodus įvertinti ekstrakto kiekio įtaką sirupų kokybei, nustatant fenolinių junginių kiekį, antioksidacinį aktyvumą, dinaminę klampą ir juslines savybes. 5. Įvertinti pagamintų sirupų stabilumą. Tyrimo metodai. Bendras fenolinių junginių kiekis šeivamedžių uogų ir žiedų ekstraktuose nustatytas spektrofotometriniu metodu pagal galo rūgštį. Antioksidacinis aktyvumas nustatytas spektrofotometriškai pagal DPPH• radikalo sujungimo metodą. Gravimetriniu metodu nustatytas sausasis skystųjų ekstraktų likutis. Antocianinai nustatyti pH diferenciniu spektrofotometriniu metodu. Sirupų kokybė ir stabilumas įvertinti pagal fenolinių junginių kiekį, antioksidacinį aktyvumą, dinaminę klampą, lūžio rodiklį, juslines savybes. Gauti rezultatai... [toliau žr. visą tekstą] / Objective of work – produce ethanolic liquid elder flower and berries extracts and syrups, and evaluate the extraction solvent concentration and quantity produced is determined by product quality. The tasks of this research are: 1. According to the literature, to select proportion of the substance and extractive solvent, a rational extractive solvent and the method of production of liquid ethanolic extracts from Elder flowers and berries. 2. To assess the impact of ethanol concentration for quality of the liquid extracts by assessing dry residue level, amount of phenolic compouds, antioxidant activity and amount of anthocyanins. 3. To produce syrups, from received ethanolic liquid extracts. 4. To assess the impact of the extract amount for quality of the syrups by assessing amount of phenolic compouds, antioxidant activity, viscosity and organoleptic properties. 5. To evaluate stability of syrups. Methods. Elder flower and fruit ethanolic liquid extracts were analyzed by using spectrophotometric method for total amount of phenolic compounds expressed by gallic acid. Antioxidative activity was determined spectrophotometrically by DPPH radical scavenging method. Gravimetric method was used for determination of dry residue levels. Anthocyanins were determined by using pH differential spectrophotometric method. Syrups quality and stability measured to determine the total phenolic compounds, antioxidant activity, dynamic viscosity, refractive index and organoleptic properties... [to full text]

This study aimed to evaluate the antimicrobial efficacy of medicinal hemp plant extracts to determine the antibacterial effects of indigenous Sansevieria species and exotic Cannabis sativa phytotherapy varieties. This study also assessed whether aqueous o

Thesis (PhD (Phytomedicine, Paraclinical Sciences))--University of Pretoria, 2007. / Includes bibliographical references.

Thesis (M.Sc.(Biochemistry))--Mahidol University, 1984.

Thesis (MSc (Phytomedicine))--University of Pretoria, 2006. / Includes bibliographical references.

Thesis (MSc (Phytomedicine, Paraclinical Sciences))--University of Pretoria, 2007. / Includes bibliographical references.