scholarly journals Benutting van landbouneweprodukte en gesuiwerde rioolwater in akwakultuur in ontwikkelende gebiede van Suid-Afrika

1993 ◽  
Vol 12 (3) ◽  
pp. 72-79 ◽  
Author(s):  
J. F. Prinsloo

The serious shortage of potable water supplies for domestic, agricultural and industrial requirements necessitates an investigation into the optimal utilization of this scarce commodity in South Africa. The multipurpose use of water in agriculture through its effective utilization in integrated aquaculture-agriculture food production systems is one way of optimising the application of such water. In the present series of investigations, agricultural wastes such as chicken, cattle and duck manure were applied as organic nutrient in freshwaterfish ponds with and without supplementary feeds. Fish used in polyculture production for the optimal utilization of the various trophic levels in manured fishpond ecosystems included the European and Chinese carp species and the sharptooth catfish. Supplementary food consisted of 18-45% protein fish pellets. As an alternative to organic manures, treated sewage effluent with fish pellets was used to evaluate its fish-production potential. Fish species used in monoculture and polyculture production included the European common carp and the sharptooth catfish. The role of water temperature on the fish-production potential of these systems was also investigated. The possible value of integrated aquaculture-agriculture systems in protein production in rural community development in South Africa is discussed.

10.29007/7dtj ◽  
2019 ◽  
Author(s):  
Mohammed Alhassan ◽  
Brenda Scholtz

Existing literature perceived Economic, Social and Environmental (ESE) factors as three key drivers of Sustainable Manufacturing Practice (SMP). ICT is not considered as a driving factor, but only as a tool that supports the achievement of SMP. The aim of this study is to investigate the role of ICT in achieving SMP in South Africa. A systematic literature review was conducted. The Google Scholar search engine was used to retrieve 1,352 articles that were analysed in this study. Themes and constructs were analysed based on the scope of the study. The findings revealed that South African manufacturing stakeholders are leveraging the advancement of ICT such as Artificial Intelligence and smart production systems to drive SMP through reduced waste and optimisation of resources. Also, the findings revealed that ICT plays a significant role that warrant its consideration as a fourth factor that drives SMP. This study emphasised the role of ICT as a driver in achieving SMP and presents the ESET model (ESE with the addition of Technology) to support the argument that ICT is a major driving factor for SMP. Understanding the role of ICT can influence how the issues of SMP are addressed and stakeholders can rethink strategies for SMP. Further empirical studies with a broader scope are encouraged because the review process and the scope of this study limits its generalisability


2019 ◽  
Vol 11 (1) ◽  
pp. 19
Author(s):  
Samuel Samuel ◽  
Yoga Candra Ditya

Danau Paniai termasuk tipe danau tektonik, berukuran besar dan telah dimanfaatkan sebagai tempat pariwisata, transfortasi, irigasi persawahan, sumber air minum dan perikanan tangkap. Aktivitas manusia disekitar danau juga berpengaruh terhadap kualitas, kesuburan dan produksi ikan perairan danau. Penelitian kualitas air, status trofik dan potensi produksi ikan bertujuan untuk mengevaluasi parameter kualitas air, tingkat kesuburan serta potensi produksi ikan perairan danau. Parameter diukur terdiri dari suhu, kedalaman, kecerahan, daya hantar listrik, pH, oksigen, alkalinitas, amonia, nitrat, fosfat, total fosfor dan klorofil-a. Pengukuran dan pengambilan sampel air dilaksanakan pada bulan April, Juli dan Oktober 2016 di tujuh stasiun pengamatan. Hasil penelitian menunjukkan Danau Paniai mempunyai kualitas air yang baik untuk kehidupan ikan dan udang. Nilai indeks status trofik berdasarkan metode Carlson sebesar 49, mengklasifikasikan perairan pada tingkat kesuburan sedang. Angka potensi produksi ikan Danau Paniai ada sebesar 491 ton/tahun dan tingkat pemanfaatan sumberdaya ikan dan udang oleh nelayan ada sebesar 20,3 ton/tahun atau 4,13% dari angka potensi produksi ikannya. Lake Paniai is a tectonic lake, large in size and has been used as sites for tourism, transportation, rice irrigation, drinking water sources and capture fisheries. Human activities around the lake also affect the quality, trophics and fish production of lake waters. Research on water quality, trophic status and potential for fish production aimed to evaluate the parameters of water quality, trophic levels and fish production potential of lake waters. The measured parameters consisted of temperature, depth, transfarancy, conductivity, pH, oxygen, alkalinity, ammonia, nitrate, phosphate, total phosphorus and chlorophyll-a. Measurement and sampling of water were carried out in April, July and October 2016 at seven observation stations. The results showed that Lake Paniai had good water quality for fish and shrimp life. Trophic status index value of 49, classified waters at mesotrophic level. The number of fish production potential was 491 tons/year and the utilization levels of fish and shrimp resources by fishermen was 20.3 tons/year or 4.13% of the potential number of fish production.


1991 ◽  
Vol 18 (3) ◽  
pp. 333-362 ◽  
Author(s):  
MADELEINE LY-TIO-FANE

SUMMARY The recent extensive literature on exploration and the resulting scientific advances has failed to highlight the contribution of Austrian enterprise to the study of natural history. The leading role of Joseph II among the neutral powers which assumed the carrying trade of the belligerents during the American War of Independence, furthered the development of collections for the Schönbrunn Park and Gardens which had been set up on scientific principles by his parents. On the conclusion of peace, Joseph entrusted to Professor Maerter a world-encompassing mission in the course of which the Chief Gardener Franz Boos and his assistant Georg Scholl travelled to South Africa to collect plants and animals. Boos pursued the mission to Isle de France and Bourbon (Mauritius and Reunion), conveyed by the then unknown Nicolas Baudin. He worked at the Jardin du Roi, Pamplemousses, with Nicolas Cere, or at Palma with Joseph Francois Charpentier de Cossigny. The linkage of Austrian and French horticultural expertise created a situation fraught with opportunities which were to lead Baudin to the forefront of exploration and scientific research as the century closed in the upheaval of the Revolutionary Wars.


Mousaion ◽  
2016 ◽  
Vol 33 (1) ◽  
pp. 23-42 ◽  
Author(s):  
Tinashe Mugwisi

Information and communications technologies (ICTs) and the Internet have to a large extent influenced the way information is made available, published and accessed. More information is being produced too frequently and information users now require certain skills to sift through this multitude in order to identify what is appropriate for their purposes. Computer and information skills have become a necessity for all academic programmes. As libraries subscribe to databases and other peer-reviewed content (print and electronic), it is important that users are also made aware of such sources and their importance. The purpose of this study was to examine the teaching of information literacy (IL) in universities in Zimbabwe and South Africa, and the role played by librarians in creating information literate graduates. This was done by examining whether such IL programmes were prioritised, their content and how frequently they were reviewed. An electronic questionnaire was distributed to 12 university libraries in Zimbabwe and 21 in South Africa. A total of 25 questionnaires were returned. The findings revealed that IL was being taught in universities library and non-library staff, was compulsory and contributed to the term mark in some institutions. The study also revealed that 44 per cent of the total respondents indicated that the libraries were collaborating with departments and faculty in implementing IL programmes in universities. The study recommends that IL should be an integral part of the university programmes in order to promote the use of databases and to guide students on ethical issues of information use.


2018 ◽  
Vol 15 (2) ◽  
Author(s):  
Lufuluvhi Maria Mudimeli

This article is a reflection on the role and contribution of the church in a democratic South Africa. The involvement of the church in the struggle against apartheid is revisited briefly. The church has played a pivotal and prominent role in bringing about democracy by being a prophetic voice that could not be silenced even in the face of death. It is in this time of democracy when real transformation is needed to take its course in a realistic way, where the presence of the church has probably been latent and where it has assumed an observer status. A look is taken at the dilemmas facing the church. The church should not be bound and taken captive by any form of loyalty to any political organisation at the expense of the poor and the voiceless. A need for cooperation and partnership between the church and the state is crucial at this time. This paper strives to address the role of the church as a prophetic voice in a democratic South Africa. Radical economic transformation, inequality, corruption, and moral decadence—all these challenges hold the potential to thwart our young democracy and its ideals. Black liberation theology concepts are employed to explore how the church can become prophetically relevant in democracy. Suggestions are made about how the church and the state can best form partnerships. In avoiding taking only a critical stance, the church could fulfil its mandate “in season and out of season” and continue to be a prophetic voice on behalf of ordinary South Africans.


2018 ◽  
Vol 47 (2) ◽  
Author(s):  
Nkholedzeni Sidney Netshakhuma

This study was conceptualised in order to assess the strategies used to incorporate the homeland of KaNgwane into Mpumalanga province after the cessation of apartheid in 1994. The specific objective of the study was to investigate the compliance of records and archives with the National Archives and Records Service of South Africa Act (Act No 43 of 1996), during the incorporation of the homeland of KaNgwane into Mpumalanga. The study adopted a qualitative methodology through document analysis, interviews and observations. The key findings revealed that the archives of the former homeland of Kangwane were not aligned with the requirements of the National Archives and Records Service of South Africa Act (Act No.43 of 1996.) Institutions seem to lack experience when it comes to the challenges of storing records and implementing arrangement and control systems. The frequent lack of a records management policy and few to no staff with record-keeping and archival backgrounds was also a concern. A shortage of space to store records safely was also one of the major issues that the study uncovered. There appears to be no concerted effort to retain important historical records. Many records are stored in several different locations in government buildings.  I conclude that archives play an essential role to the nation as the institutional memory.


2016 ◽  
Vol 9 (15) ◽  
Author(s):  
Nadiehezka Paola Palencia Tejedor

This work focuses on a compared analysis of the South Afri- can decision related to the “peace and reconciliation act” of this country’s Parliament, and the Colombian decision regarding the amendment of the constitution called “The juridical framework for the peace.” Turning to the structure, it is developed in three major topics: 1. It provides a brief of the historical context, political background and an overview of the two decisions.2. It gives a structural analysis of the powers that each Court has and the nature of the constitutional mechanism through which both Courts decided the constitutionality of the said norms 3. It presents a critical analysis on the similarities and differences between the two systems and judgments. It presents some con- clusions. 


2020 ◽  
pp. 74-86
Author(s):  
Alexandra Arkhangelskaya

The history of the formation of South Africa as a single state is closely intertwined with events of international scale, which have accordingly influenced the definition and development of the main characteristics of the foreign policy of the emerging state. The Anglo-Boer wars and a number of other political and economic events led to the creation of the Union of South Africa under the protectorate of the British Empire in 1910. The political and economic evolution of the Union of South Africa has some specific features arising from specific historical conditions. The colonization of South Africa took place primarily due to the relocation of Dutch and English people who were mainly engaged in business activities (trade, mining, agriculture, etc.). Connected by many economic and financial threads with the elite of the countries from which the settlers left, the local elite began to develop production in the region at an accelerated pace. South Africa’s favorable climate and natural resources have made it a hub for foreign and local capital throughout the African continent. The geostrategic position is of particular importance for foreign policy in South Africa, which in many ways predetermined a great interest and was one of the fundamental factors of international involvement in the development of the region. The role of Jan Smuts, who served as Prime Minister of the Union of South Africa from 1919 to 1924 and from 1939 to 1948, was particularly prominent in the implementation of the foreign and domestic policy of the Union of South Africa in the focus period of this study. The main purpose of this article is to study the process of forming the mechanisms of the foreign policy of the Union of South Africa and the development of its diplomatic network in the period from 1910 to 1948.


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