1,272 research outputs found
Genetics of growth and development in cattle / by Raphael Abiodun Afolayan
No full text"February, 2003"Includes 5 papers co-authored by the author at end of textIncludes bibliographical references (leaves 146-179)xv, 179, [31] leaves : ill. ; 30 cm.Thesis (Ph.D.)--University of Adelaide, Dept. of Animal Science, 200
Bioassay-guided isolation and identification of antimicrobial compounds from thyme essential oil by means of overpressured layer chromatography, bioautography and GC-MS
No full textA simple method is described for efficient isolation of compounds having an antibacterial effect.
Two thyme (Thymus vulgaris) essential oils, obtained from the market, were chosen as
prospective materials likely to feature several bioactive components when examined by thin layer
chromatography coupled with direct bioautography as a screening method. The newly developed
infusion overpressured layer chromatographic separation method coupled with direct
bioautography assured that only the active components were isolated by means of overrun
overpressured layer chromatography with online detection and fractionation. Each of the 5
collected fractions represented one of the five antimicrobial essential oil components designated
at the screening. The purity and the activity of the fractions were confirmed with chromatography
coupled various detection methods (UV, vanillin-sulphuric acid reagent, direct bioautography).
The antibacterial components were identified with GC-MS as thymol, carvacrol, linalool, diethylphthalate,
and alpha-terpineol. The oil component diethyl-phthalate is an artificial compound,
used as plasticizer or detergent bases in the industry. Our results support that exploiting its
flexibility and the possible hyphenations, overpressured layer chromatography is especially
attractive for isolation of antimicrobial components from various matrixes
Contemporary Perspectives on the Historic: Stone Sculptures of Oladapo Afolayan as Continuity and Development in the Trajectory of Nigerian Stone Art
No full textOladapo Afolayan’s stone sculptures are contemporary by every qualification. However, he has built on far-reaching legacies of ancient stone art cultures that existed in Nigeria, such as Nok, Ile-Ife, Ekoi and Esie. The trajectory of stone art as it is found in Nigeria is traceable because the forms and styles are intact due to the durability of the medium of stone and because of its bulkiness, not many stone sculptures were lost to colonial looting and acquisition. Early explorers and historians like Leo Frobenius were reluctant to accept African human origin for many of these stone sculptures because of their sizes, quantity, quality, value and locations. These levels of aesthetic and technical sophistication may have challenged many contemporary artists to have shied away from attempting to replicate or resuscitate the mode of those works, albeit contemporarily, but not Oladapo Afolayan. He has, for over three decades, produced over 300 stone sculptures in various types of stone that can equal the past works in all dimensions. The artist’s repertoire reflects the high dexterity, ingenuity and mastery of medium that can be observable in the historical stone works. By fieldwork consisting of mostly observations, interviews, photography and literature review, this study documented the stone sculptures of Oladapo Afolayan, and juxtapositions them with the ancient works to be able to establish his contemporary perspectives as a continuity and development of stone art in Nigeria. Oladapo Afolayan’s practice, not only revives an enduring art form, but is also engaged in visual documentation of Nigerian history, creating material culture, training and mentoring future sculptors for the sustainability of stone-carving, and overall Nigerian art globally.
Keywords: Art History, Continuity, Development, Nigerian Sculpture, Oladapo Afolayan, Stone Ar
The Freedom Fight: A Novel of Resistance and Freedom. A Translation by Pamela J. Olubunmi Smith of Adébáyọ̀ Fálétí’s Ọmọ Olókùn Ẹṣin
No full textThe story entailed in Ọmọ Olókùn Ẹṣin (The Freedom Fight) is straightforward. Àjàyí, the titular hero, starts off with the direct first-person narrative. The story starts off straight from the horse’s mouth, setting the stage for all other active agents to render their own sides of the events, to which everyone else is not privy. Here is the snippet of the novel directly from the author’s blurb: Àjàyí, son of Council Chief Olókùn Ẹṣin of Àgùn, seeks independence on behalf of his Òkè Ògùn kinsmen, independence from the oppressive Òkò, one of the principal regions of Yorùbáland. To this end he and his many friends – among them Àyọwí from Igboho, and Ibiwumi, the Otu Baale’s ̀ daughter – who help him narrate this story, suffered untold hardships. In the beginning, the very countrymen he sought to liberate were opposed to the talk of independence because no one could really grasp the idea. However, in the end, Àjàyí prevailed. Where shall we begin this tale? Which among the story’s many episodes should one emphasize – is it Kọ́lájọ’s demonic rampage, or Ibiwumi’s calculated risk, or Lagbogun’s greed and flagrant abuse of power and privilege? Incidents abound – highlights herein include the riot in Baba-Ode Townships; the fight at Idi Araba; the bizarre encounter in the market 200 Michael Oladejo Afolayan center at Igboho; even the scuffle outside Baale of Ìgbẹtì’s compound; and, ́ of course, many more of Àjàyí’s numerous acts of valour and defiance
The Freedom Fight: A Novel of Resistance and Freedom. A Translation by Pamela J. Olubunmi Smith of Adébáyọ̀ Fálétí’s Ọmọ Olókùn Ẹṣin
No full textThe story entailed in Ọmọ Olókùn Ẹṣin (The Freedom Fight) is straightforward. Àjàyí, the titular hero, starts off with the direct first-person narrative. The story starts off straight from the horse’s mouth, setting the stage for all other active agents to render their own sides of the events, to which everyone else is not privy. Here is the snippet of the novel directly from the author’s blurb: Àjàyí, son of Council Chief Olókùn Ẹṣin of Àgùn, seeks independence on behalf of his Òkè Ògùn kinsmen, independence from the oppressive Òkò, one of the principal regions of Yorùbáland. To this end he and his many friends – among them Àyọwí from Igboho, and Ibiwumi, the Otu Baale’s ̀ daughter – who help him narrate this story, suffered untold hardships. In the beginning, the very countrymen he sought to liberate were opposed to the talk of independence because no one could really grasp the idea. However, in the end, Àjàyí prevailed. Where shall we begin this tale? Which among the story’s many episodes should one emphasize – is it Kọ́lájọ’s demonic rampage, or Ibiwumi’s calculated risk, or Lagbogun’s greed and flagrant abuse of power and privilege? Incidents abound – highlights herein include the riot in Baba-Ode Townships; the fight at Idi Araba; the bizarre encounter in the market 200 Michael Oladejo Afolayan center at Igboho; even the scuffle outside Baale of Ìgbẹtì’s compound; and, ́ of course, many more of Àjàyí’s numerous acts of valour and defiance
Security risks and challenges confronting female itinerant merchants: A case of the Yoruba Alájàpá in Modákẹ́kẹ́, South-western Nigeria
No full textA Review of Isaac Oluwole Delano’s Pioneering Works on Yoruba Grammar, Orthography, Lexicography and Cultural Education.
No full textTis is a reproduction and an improved version of our opening chapter on Selected Works of Chief Isaac O. Delano on Yoruba Language. In it, we reintroduce the seminal works of the legendary writer and language educator, I. O. Delano. Many of these works have become obscure to the reading public due to an apparent lack of intentional publication. Delano, known for his prolific writings, wrote a few books relating to Yoruba language and grammar. Tis segment looks at four major non-fiction works of Chief Isaac O. Delano. For the most part, the segment deals with his efforts on Yoruba language, but to some extent, too, it looks at some additional non-language related writings often embedded in his works on language. For example, in Appendix I of his 1965 book, A Modern Yoruba Grammar, the author provides an array of proverbs and sayings in the language with their English equivalents. In Appendix II, Delano infused two old texts into the book, which comprise of a sermon and an essay on schooling. Clearly, Delano seems to have a penchant for dissemination of relevant cultural education in all his works. Indeed, one could say Yoruba Cultural education has always been apparently one of Delano’s passions as well as hidden agenda in writing his books, and he does so relentlessly. In what follows, we 216 Toyin Falola and Michael Oladejo Afolayan examine the four works in no particular order, although the Modern Grammar is given a relatively more detailed review and summarization. The four books are: A Modern Yoruba Grammar; Àgbékà Ọr̀ ọ̀ Yorùbá: Appropriate Words and Expressions in Yoruba; Conversation in Yoruba and English; and Atúmọ̀Èdè Yorùbá
A Review of Isaac Oluwole Delano’s Pioneering Works on Yoruba Grammar, Orthography, Lexicography and Cultural Education.
No full textTis is a reproduction and an improved version of our opening chapter on Selected Works of Chief Isaac O. Delano on Yoruba Language. In it, we reintroduce the seminal works of the legendary writer and language educator, I. O. Delano. Many of these works have become obscure to the reading public due to an apparent lack of intentional publication. Delano, known for his prolific writings, wrote a few books relating to Yoruba language and grammar. Tis segment looks at four major non-fiction works of Chief Isaac O. Delano. For the most part, the segment deals with his efforts on Yoruba language, but to some extent, too, it looks at some additional non-language related writings often embedded in his works on language. For example, in Appendix I of his 1965 book, A Modern Yoruba Grammar, the author provides an array of proverbs and sayings in the language with their English equivalents. In Appendix II, Delano infused two old texts into the book, which comprise of a sermon and an essay on schooling. Clearly, Delano seems to have a penchant for dissemination of relevant cultural education in all his works. Indeed, one could say Yoruba Cultural education has always been apparently one of Delano’s passions as well as hidden agenda in writing his books, and he does so relentlessly. In what follows, we 216 Toyin Falola and Michael Oladejo Afolayan examine the four works in no particular order, although the Modern Grammar is given a relatively more detailed review and summarization. The four books are: A Modern Yoruba Grammar; Àgbékà Ọr̀ ọ̀ Yorùbá: Appropriate Words and Expressions in Yoruba; Conversation in Yoruba and English; and Atúmọ̀Èdè Yorùbá
Evidence of non-additive genetic effects on predicted carcass composition
No full textThe document attached has been archived with permission from the World Congress on Genetics Applied to Livestock Production.Genetic effects on pre- and post-weaning body weight and developmental traits of Jersey and Limousin cross cattle has been reported (Afolayan et al., 2001). As in this earlier study which indicated the importance of epistasis at older ages, maternal effects (Meyer, 1992) and heterotic effects (Pitchford et al., 1993) have also been found on post-weaning growth traits of some breed of beef cattle. Genetic improvement programs in beef cattle could be enhanced through understanding of the genetic effects on live animal traits at various ages. However, the value of beef cattle lies better in their ability to efficiently produce a carcass composed of optimal proportions of muscle, bone and fat at market weight (Tatum et al., 1986). In essence, the knowledge of the genetic effects on different carcass components is of more importance to the breeders/producers of livestock. This study, therefore, examines the estimates of four genetic effects on predicted carcass traits using live-animal measurements
Forest dynamism of a green space: a perspective from T.A. AFOLAYAN Wildlife Park, Akure, Ondo state, Nigeria
No full textPoor physical planning had factually led to the destruction of valuable ecosystems in most academic institutions of developing countries such as Nigeria. This study aimed to detect the land cover change over time of T.A. Afolayan Wildlife Park, located at the Federal University of Technology, Akure, Nigeria for a period of twelve years using Ikonos and WorldView satellite imageries of the study area for two years time series (2001 and 2013), while supervised classification algorithm method was employed. Three land cover classes were compiled: non-forested vegetation, forested vegetation and bare surfaces (lands without shrubs and barren rocky areas). Non-Forested vegetations recorded a higher land cover area (44.86m2), while bare surfaces had the lower land cover area (11.02m2) in 2001. Forested vegetations recorded a higher land cover area (45.15m2), while bare surfaces had the lower land cover area (12.26m2) in 2013. It was observed that forested vegetation increased rapidly from 2001 to 2013 with percentage change (17.89%). Thus, the positive significant change substantiated the vegetation restorative capability and ecological stabilizing potential of a conservation area within the academic environment. However, if the steady growth in the forest land cover can be maintained, it will promote ecological sustainability and healthy environment.Keywords: Green spaces; Landcover change; Geographic Information Syste
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