BEN and CO
- Authors: Saly Sidibe , Harouna Bary (arrangement) , Adama Drame (guitar solo) , Batoss (bass guitar) , Lamine Camara (electric piano) , Mamadou Koita (Djembe) , Harouna Samake (N'goni) , Sidi Coulibaly (drums) , Awa Diabate, Sanota Doumbie (chorus) , Ali Landoure
- Date: 2000
- Subjects: Popular music , Popular music--Mali--1991-2000 , Africa Mali Wassoulou f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127381 , vital:36007 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO3-07
- Description: Singing accompanied by guitar and N'goni, electric piano and flute
- Full Text: false
- Date Issued: 2000
Wali nyuman don
- Authors: Saly Sidibe , Harouna Bary (arrangement) , Adama Drame (guitar solo) , Batoss (bass guitar) , Lamine Camara (electric piano) , Mamadou Koita (Djembe) , Harouna Samake (N'goni) , Sidi Coulibaly (drums) , Awa Diabate, Sanota Doumbie (chorus) , Ali Landoure
- Date: 2000
- Subjects: Popular music , Popular music--Mali--1991-2000 , Africa Mali Wassoulou f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127391 , vital:36009 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO3-09
- Description: Singing accompanied by guitar and N'goni, electric piano and flute
- Full Text: false
- Date Issued: 2000
Tieou magni
- Authors: Saly Sidibe , Harouna Bary (arrangement) , Adama Drame (guitar solo) , Batoss (bass guitar) , Lamine Camara (electric piano) , Mamadou Koita (Djembe) , Harouna Samake (N'goni) , Sidi Coulibaly (drums) , Awa Diabate, Sanota Doumbie (chorus) , Ali Landoure
- Date: 2000
- Subjects: Popular music , Popular music--Mali--1991-2000 , Africa Mali Wassoulou f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127357 , vital:36004 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO3-05
- Description: Singing accompanied by guitar and N'goni, electric piano
- Full Text: false
- Date Issued: 2000
Diomantaire Balla-Kissidougou
- Authors: Saly Sidibe , Harouna Bary (arrangement) , Adama Drame (guitar solo) , Batass (bass guitar) , Lamine Camara (electric piano) , Mamadou Koita (Djembe) , Sidi Coulibaly (drums) , Awa Diabate, Sanota Doumbie (chorus) , Ali Landoure
- Date: 2000
- Subjects: Popular music , Popular music--Mali--1991-2000 , Africa Mali Wassoulou f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127331 , vital:36001 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO3-02
- Description: Singing accompanied by guitar and N'goni, electric piano and flute
- Full Text: false
- Date Issued: 2000
Anka niogon deme
- Authors: Saly Sidibe , Harouna Bary (arrangement) , Adama Drame (guitar solo) , Batass (bass guitar) , Harouna Samake ((N'goni) , Lamine Camara (electric piano) , Mamadou Koita (Djembe) , Sidi Coulibaly (drums) , Amadou Taore dit Adez (flute) , Awa Diabate, Sanata Doumbie (chorus) , Ali Landoure
- Date: 2000
- Subjects: Popular music , Popular music--Mali--1991-2000 , Africa Mali Wassalou f-ml
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127322 , vital:36000 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO3-01
- Description: Singing accompanied by guitar and N'goni, electric piano and flute
- Full Text: false
- Date Issued: 2000
Dabiya-Baba Sissoko
- Authors: Saly Sidibe , Harouna Bary (arrangement) , Adama Drame (guitar solo) , Batoss (bass guitar) , Lamine Camara (electric piano) , Mamadou Koita (Djembe) , Harouna Samake (N'goni) , Sidi Coulibaly (drums) , Awa Diabate, Sanota Doumbie (chorus) , Ali Landoure
- Date: 2000
- Subjects: Popular music , Popular music--Mali--1991-2000 , Africa Mali Wassoulou f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127367 , vital:36005 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO3-06
- Description: Singing accompanied by guitar and N'goni, electric piano and flute
- Full Text: false
- Date Issued: 2000
Wali Diawara
- Authors: Saly Sidibe , Harouna Bary (arrangement) , Adama Drame (guitar solo) , Batass (bass guitar) , Lamine Camara (electric piano) , Mamadou Koita (Djembe) , Sidi Coulibaly (drums) , Awa Diabate, Sanota Doumbie (chorus) , Ali Landoure
- Date: 2000
- Subjects: Popular music , Popular music--Mali--1991-2000 , Africa Mali Wassoulou f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127349 , vital:36003 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO3-04
- Description: Singing accompanied by guitar and N'goni, electric piano
- Full Text: false
- Date Issued: 2000
El hadji Diakali Toure
- Authors: Saly Sidibe , Harouna Bary (arrangement) , Adama Drame (guitar solo) , Batass (bass guitar) , Lamine Camara (electric piano) , Mamadou Koita (Djembe) , Sidi Coulibaly (drums) , Awa Diabate, Sanota Doumbie (chorus) , Ali Landoure
- Date: 2000
- Subjects: Popular music , Popular music--Mali--1991-2000
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127340 , vital:36002
- Description: Singing accompanied by guitar and N'goni, electric piano
- Full Text: false
- Date Issued: 2000
Anka Niogon Deme
- Authors: Saly Sidibe , Harouna Bary (arrangement) , Adama Drame (guitar solo) , Amadou Taore dit Adez (flute) , Batoss (bass guitar) , Lamine Camara (electric piano) , Mamadou Koita (Djembe) , Harouna Samake (N'goni) , Sidi Coulibaly (drums) , Awa Diabate, Sanota Doumbie (chorus) , Ali Landoure
- Date: 2000
- Subjects: Popular music , Popular music--Mali--1991-2000 , Africa Mali Wassoulou f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127412 , vital:36010 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO3-10
- Description: Singing accompanied by guitar and N'goni, electric piano and flute
- Full Text: false
- Date Issued: 2000
Topical Opinion - Organising on the mines
- Authors: SAIRR
- Date: 2000
- Subjects: SAIRR
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/111247 , vital:33420
- Description: When the National Union of Mineworkers was formed an experienced unionist said to me "organising workers in South Africa is the art of the possible". But organising workers in the mining industry is the art of the impossible. It has been the art of the impossible because it has been the art of trying to make a fundamental change in a system by using structures and instruments that were designed to perpetuate that system. It lias been the art of the impossible because it has been the art of trying to make a revolution with moderate tools tli at were invented to prevent a revolution. Because of the nature of the mining industry, which is conservative or ultraconservative by any definition, the black miner has been condemned to seek radical ends within a framework which was designed to prevent sudden and radical changes. For almost one hundred years now, black miners have not been able to change their status. The African Miners' Union in 1946 under J B Marks made an attempt but was brutally crushed by a combination of employer and government forces. It is against this background that our union has developed its organising strategies. Organising has taken place around a number of issues, some of which are safety, wages, and working- class unity.
- Full Text:
- Date Issued: 2000
Workers are parents too
- Authors: SACCAWU
- Date: 2000
- Subjects: SACCAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/113858 , vital:33838
- Description: This booklet is a follow-up to the Parental Rights' Manual for negotiators produced by SACCAWU in 1999. These publications have been the product of painful soul- searching. They are attempts to highlight the plight of women in the workplace and represent the uncompromising resolve of the union to challenge the inequalities and discrimination that workers, especially women, suffer as parents. This booklet is intended to assist negotiators, shop stewards and ordinary workers in knowing and exercising their parental rights. In order to win the struggle for parental rights, the understanding of worker rights must reach all the way to the shop floor. This booklet will help to make that understanding a reality. We wish to thank the commitment and dedication by all workers and union officials who have worked tirelessly for the realisation of the noble goal of parental rights and have forced the bosses to reason beyond dogmatic greed to maximise profits. Achievements won thus far have not been easy victories, nor can they be attributed to kindness or a change of heart by the employers. This booklet builds on our manual and further inspires us to translate our dreams into reality.
- Full Text:
- Date Issued: 2000
Workers are parents too
- Authors: SACCAWU
- Date: 2000
- Subjects: SACCAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/137642 , vital:37545
- Description: This booklet is a follow-up to the Parental Rights' Manual for negotiators produced by SACCAWU in 1 999. These publications have been the product of painful soul- searching. They are attempts to highlight the plight of women in the workplace and represent the uncompromising resolve of the union to challenge the inequalities and discrimination that workers, especially women, suffer as parents. This booklet is intended to assist negotiators, shop stewards and ordinary workers in knowing and exercising their parental rights. In order to win the struggle for parental rights, the understanding of worker rights must reach all the way to the shop floor. This booklet will help to make that understanding a reality. We wish to thank the commitment and dedication by all workers and union officials who have worked tirelessly for the realisation of the noble goal of parental rights and have forced the bosses to reason beyond dogmatic greed to maximise profits. Achievements won thus far have not been easy victories, nor can they be attributed to kindness or a change of heart by the employers. This booklet builds on our manual and further inspires us to translate our dreams into reality. We would like to thank everyone who contributed to the writing of this booklet, especially the SACCAWU Reference Group of Fihliwe Lusu, Brenita Cloete, Bella Maneli, Judy Piti, Abduragmann Jacobs, the SACCAWU National Gender Co-ordinator, Patricia Appolis, and those involved directly in production: John Pape of ILRIG, Meg Jordi, William Matlala, Rosie Campbell, Jon Berndt and Logo Print.
- Full Text:
- Date Issued: 2000
The development of a WAIS-III short form for use in South Africa
- Authors: Rust, Annegret L
- Date: 2000
- Subjects: Wechsler Adult Intelligence Scale , Intelligence tests -- South Africa , Wechsler Adult Intelligence Scale -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3047 , http://hdl.handle.net/10962/d1002556 , Wechsler Adult Intelligence Scale , Intelligence tests -- South Africa , Wechsler Adult Intelligence Scale -- South Africa
- Description: The Wechsler Adult Intelligence Scale - 3rd Edition (WAIS-III) is the newest of the internationally recognised Wechsler family of intelligence tests. It has been improved in terms of its psychometric properties, neuropsychological assessment abilities and its content. This test is in the process of being standardised by the Human Sciences Research Council (HSRC) in South Africa. As the adapted South African version will be available shortly for use in the multicultural circumstances of South Africa, the application of the various aspects of this test needs to be investigated. This test is very comprehensive and thorough, however its one disadvantage is that it takes on average three hours to administer in its entirety. Thus there is a need to find ways in which to abbreviate the test for particular purposes when time is limited, for example in research, brief clinical assessments or neuropsychological screenings. The concept of abbreviating tests, including the earlier Wechsler intelligence test can be traced back to 1917, when it was asked if all the items on the Binet-Simon scale were required to give an accurate assessment of IQ (Levy, 1968). Since then there have been many short form suggestions made, with many different considerations in mind. These can be divided into two main approaches or methods. Firstly, the number of subtests of the scale can be reduced. Thus with the WAIS-III which consists of 14 subtests in total, an option is to use, for example only four of the subtests to get an estimate of a person's IQ. Secondly, the number of items in each subtest can be reduced. Thus only half the items or even only a third of the items on a subtest can be administered to get an estimate of the persons' performance on each subtest and in this way estimate their overall IQ. Both methods have been used on the WAIS and WAIS-R, although the reduction of the subtests is favoured. Both should now be validated and considered for use with the WATS-III in South Africa. Wechsler tests and their constituent subtests have been found to be differentially effected by race, education, language and socio-economic status (Kaufman, McLean & Reynolds, 1988; Nell 1999). These differences have also been found to impact on the short forms which are suggested, as certain subtests are considered to be more biased towards particular groups than others. Vocabulary and Block Design in particular bias testees who are not as westernised or acculturated towards a largely American and European culture (Kaufman, McLean & Reynolds, 1988). These differences, although often ascribed to race, language or socio-economic status can best be understood more broadly in terms of degree of acculturation (i.e. westernisation) (Shuttleworth-Jordan, 1996) and test-wiseness (Nell, 1999). In South Africa in particular, with its extreme cultural diversity these factors need to be carefully considered when developing short forms. In the present study the development of a short form appropriate to South Africa's diverse cultural circumstances will be approached, through a sample which has been stratified according to gender, first language (English vs. African), quality of schooling received (Private/Model C vs. DET) and level of education achieved (Matric vs. Graduate). Both a subtest reduction method and an item reduction method will be considered to arrive at a short form. The subtest reduction method will be considered further in an attempt to clarify which subtests would be more or less appropriate to include in a short form considering group differences. Finally the thesis will develop suggestions as to which short forms would be best for use in South Africa.
- Full Text:
- Date Issued: 2000
The analysis of trace gas emissions from landfills
- Authors: Rubidge, Gletwyn Robert
- Date: 2000
- Subjects: Gases, Asphyxiating and poisonnous , Gases -- Analysis , Sanitation -- Environmental engineering
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10983 , http://hdl.handle.net/10948/d1006341 , Gases, Asphyxiating and poisonnous , Gases -- Analysis , Sanitation -- Environmental engineering
- Description: Numerous informal houses have been built on and adjacent to a landfill in iBayi, Port Elizabeth, South Africa, which accepted domestic and industrial waste. Formal housing surrounds most of the site at a greater distance - some 60 m, or further, from the landfill. Both formal and informally housed residents complain of odours, burning eyes, sore throats and headaches - symptoms which they believed were caused by the landfill. The landfill gas and ambient air were analyzed to classify and quantify the VOCs (volatile organic compounds) emitted and then to compare the quantitative data with recognised standards to establish if the residents are at risk. Eighteen target (potentially hazardous) VOCs were quantified. A wide variety of compounds were detected in both the ambient air and landfill gas. The results of the VOC analyses were similar to those of other workers in both the qualitative and quantitative studies. The concentrations of the VOCs were mostly lower than the TLV (threshold limit values) values, but exceeded the MRLs (minimum recommended levels). The combined concentrations of the VOC’s in the ambient air either approached or exceeded the limit values for combined exposure thus indicating that a potential health hazard exists. One third of the VOCs were detected in both the ambient air and the subsurface gas, however, external pollution sources also appear to contribute to the VOC concentrations ambient air. Dangerously high methane concentrations were repeatedly detected in the landfill gas amongst the informal houses. There was a vast improvement in the aesthetic qualities of the landfill since the disposal restriction to accept only domestic refuse and building rubble in July 1997. The ambient air was less odorous and landfill site littered. Fewer informal recyclers were present and their concomitant squabbling over valuables had almost vanished. The management of the iBayi landfill holds much room for improvement. There is potential for serious injury or even death if no action is taken to remedy the problems at the iBayi landfill. A holistic solution will have to be found to make the landfill a safe neighbour. Some complementary analyses (such as pH, heavy metal concentrations in the water and sediments etc.) were performed on the leachate and water surrounding the landfill.
- Full Text:
- Date Issued: 2000
The development of a geomorphological classification system for the longitudinal zonation of South African rivers
- Authors: Rowntree, Kate M , Wadeson, R A , O'Keeffe, Jay
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:6722 , http://hdl.handle.net/10962/d1006799
- Description: The recognition of the Reserve by the new South African Water Law poses new challenges for river scientists. The ecological water requirement or environmental flow is recognised by that part of the Reserve known as the ecological Reserve. If the ecological Reserve is to be implemented, it must first be defined and quantified for all river systems subject to water related developments. Standard procedures are being developed through the Resource Directed Measures (RDM) of the Department of Water Affairs and Forestry while monitoring the health of South Africa's rivers is taking place through the National River Health Programme (NRHP). Cost effective methods of developing spatial frameworks for both the RDM and NRHP are required. Concepts of longitudinal river zonation were developed by river ecologists in the 1960s and 1970s to assist in the classification of ecologically uniform stretches of rivers. This paper reviews the different zonation concepts and presents a geomorphological classification of South African river zones that is being applied to the RDM and NRHP. The classification is tested on three rivers, the Sabie, Buffalo and Olifants.
- Full Text: false
- Date Issued: 2000
The development of a geomorphological classification system for the longitudinal zonation of South African rivers
- Authors: Rowntree, Kate , Wadeson, Roy A , O'Keeffe, Jay
- Date: 2000
- Language: English
- Type: text , Article
- Identifier: vital:7082 , http://hdl.handle.net/10962/d1012338
- Description: The recognition of the Reserve by the new South African Water Law poses new challenges for river scientists. The ecological water requirement or environmental flow is recognised by that part of the Reserve known as the ecological Reserve. If the ecological Reserve is to be implemented, it must first be defined and quantified for all river systems subject to water related developments. Standard procedures are being developed through the Resource Directed Measures (RDM) of the Department of Water Affairs and Forestry while monitoring the health of South Africa's rivers is taking place through the National River Health Programme (NRHP). Cost effective methods of developing spatial frameworks for both the RDM and NRHP are required. Concepts of longitudinal river zonation were developed by river ecologists in the 1960s and 1970s to assist in the classification of ecologically uniform stretches of rivers. This paper reviews the different zonation concepts and presents a geomorphological classification of South African river zones that is being applied to the RDM and NRHP. The classification is tested on three rivers, the Sabie, Buffalo and Olifants.
- Full Text: false
- Date Issued: 2000
Making sense of ʺessenceʺ : a critical examination of the adequacy of the modern philosophical conception of ʺessenceʺ
- Authors: Ross, Allison
- Date: 2000
- Subjects: Essentialism (Philosophy)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2720 , http://hdl.handle.net/10962/d1002850 , Essentialism (Philosophy)
- Description: The idea that some sub-set of the properties of an object captures what it is to be that thing i.e. that it has an essence which is there to be discovered and about which we can be mistaken - is a commonsense assumption that we use all the time. However, philosophers of this century have regarded the realism about essence with skepticism, arguing that we impose essences on things by the way we define our concepts as opposed to discovering them. Essences are supposedly characteristics of our concepts rather than of objects in the world. This was the orthodox view until a group of philosophers of language developed the theory of direct reference. They claimed that proper names and certain other words refer non-connotatively which entails that the real properties of objects are crucial to the establishment of the reference of such terms. It can be shown that the properties involved in reference determination must be all and only the necessary properties of those objects. This discovery has been taken to mark the rehabilitation of the notion of essence, with an object’s essence being taken to be that set of properties which it must have in all possible worlds in which it exists. I will argue that the theory of direct reference is correct up to the point at which it assimilates the necessary properties of objects to their essences. I will show that the set of an object’s necessary properties cannot fulfill the role reserved for the concept of essence in metaphysical hypotheses concerning the nature of objects. I will go on to show that a sub-set of a thing’s necessary properties can fulfill this role and I will suggest that we identify the members of this sub-set by testing their ability to furnish the kinds of explanations we expect from essences. I will demonstrate how this can be done using the Aristotelian idea that the notion of essence is required in order to explain how it is that objects can persist through change.
- Full Text:
- Date Issued: 2000
Designing and implementing a virtual reality interaction framework
- Authors: Rorke, Michael
- Date: 2000
- Subjects: Virtual reality , Computer simulation , Human-computer interaction , Computer graphics
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4623 , http://hdl.handle.net/10962/d1006491 , Virtual reality , Computer simulation , Human-computer interaction , Computer graphics
- Description: Virtual Reality offers the possibility for humans to interact in a more natural way with the computer and its applications. Currently, Virtual Reality is used mainly in the field of visualisation where 3D graphics allow users to more easily view complex sets of data or structures. The field of interaction in Virtual Reality has been largely neglected due mainly to problems with input devices and equipment costs. Recent research has aimed to overcome these interaction problems, thereby creating a usable interaction platform for Virtual Reality. This thesis presents a background into the field of interaction in Virtual Reality. It goes on to propose a generic framework for the implementation of common interaction techniques into a homogeneous application development environment. This framework adds a new layer to the standard Virtual Reality toolkit – the interaction abstraction layer, or interactor layer. This separation is in line with current HCI practices. The interactor layer is further divided into specific sections – input component, interaction component, system component, intermediaries, entities and widgets. Each of these performs a specific function, with clearly defined interfaces between the different components to promote easy objectoriented implementation of the framework. The validity of the framework is shown in comparison with accepted taxonomies in the area of Virtual Reality interaction. Thus demonstrating that the framework covers all the relevant factors involved in the field. Furthermore, the thesis describes an implementation of this framework. The implementation was completed using the Rhodes University CoRgi Virtual Reality toolkit. Several postgraduate students in the Rhodes University Computer Science Department utilised the framework implementation to develop a set of case studies. These case studies demonstrate the practical use of the framework to create useful Virtual Reality applications, as well as demonstrating the generic nature of the framework and its extensibility to be able to handle new interaction techniques. Finally, the generic nature of the framework is further demonstrated by moving it from the standard CoRgi Virtual Reality toolkit, to a distributed version of this toolkit. The distributed implementation of the framework utilises the Common Object Request Broker Architecture (CORBA) to implement the distribution of the objects in the system. Using this distributed implementation, we are able to ascertain that CORBA is useful in the field of distributed real-time Virtual Reality, even taking into account the extra overhead introduced by the additional abstraction layer. We conclude from this thesis that it is important to abstract the interaction layer from the other layers of a Virtual Reality toolkit in order to provide a consistent interface to developers. We have shown that our framework is implementable and useful in the field, making it easier for developers to include interaction in their Virtual Reality applications. Our framework is able to handle all the current aspects of interaction in Virtual Reality, as well as being general enough to implement future interaction techniques. The framework is also applicable to different Virtual Reality toolkits and development platforms, making it ideal for developing general, cross-platform interactive Virtual Reality applications.
- Full Text:
- Date Issued: 2000
Ostrich calpastatin purification and partial characterization of the liver inhibitor
- Authors: Roman, Henry James
- Date: 2000
- Subjects: Calpastatin , Protease inhibitors , Ion exchange chromatography , Ostriches
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:11090 , http://hdl.handle.net/10948/d1015522
- Description: The isolation and purification of calpastatin from ostrich liver is presented, along with its physicochemical and kinetic properties. By using extraction from liver, ion-exchange chromatography on DEAE-Toyopearl, heating to 90 °C for 10 min and rechromatography on Toyopearl Super-Q 650 S, ostrich calpastatin was isolated and purified from ostrich liver. The purified intact calpastatin showed homogeneity on SDS-PAGE (Mr of 105.6 K). Amino acid analysis showed that ostrich calpastatin resembled that of rabbit liver and human erythrocyte calpastatin. An N-terminal sequence could not be obtained because the N-terminus was found to be blocked by an as yet unknown amino acid residue. The Mr values of degradative forms of ostrich liver calpastatin were determined to be 56 K and 90 K. By using PAG-IEF the pI of the intact form was determined to be 5.1. Ostrich liver calpastatin behaved characteristically like other calpastatins during kinetic analysis. Calpastatin inhibited calpain from pH 6 to 9 and was found to be unaffected by temperatures as high as 100 °C. Calpastatin also inhibited calpain activity at Ca2+ concentrations ranging from 1 to 10 mM. The inhibitor was shown to be phosphorylated because after incubation with alkaline phosphatase there was a decrease in inhibitory activity. No inhibitory effects were detected against other proteases such as chymotrypsin and trypsin, with both proteases inactivating calpastatin completely. Ostrich liver calpain was shown to have a pH optimum of 7.5 and a temperature optimum of 30 °C. In terms of its thermodynamic properties it resembled that of other ostrich proteases; DH, DS and DG being 47.07 kJ/mol, -91.1 J/mol/K and 74.237 kJ/mol, respectively. Ostrich liver calpain showed a Km of 0.14 % (w/v). The enzyme was active at both milli- and micro-molar concentrations of Ca2+. Ostrich liver calpastatin showed many physical, chemical and kinetic properties similar to those of other known calpastatins.
- Full Text: false
- Date Issued: 2000
Tchwa
- Authors: Rokia Traore (author, composer, arranger, interpreter, lead singer, guitar, chorus) , Bouboucar Traore (singer) , Abdul Wahab Berthe (bass) , Andra Kouyate (N'Goni) , Sidiki Camara (percussion) , Label Bleu
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Mali Bamako f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/131136 , vital:36527 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC49-10
- Description: Non-Malian vocal style and multilayered singing accompanied by traditional Malian instuments played with a modern edge
- Full Text: false
- Date Issued: 2000