109 research outputs found
General Louis Botha
No full textEnglish version of: Genl. Louis Botha. Pretoria : Van Schaik, 1928.The original document was digitized with financial support from Media24.by F.V. Engelenburg ; with an antroduction by J.C. Smuts.http://explore.up.ac.za/record=b172827
Onze krijgs-officieren; album van portretten met levens-schetsen der Transvaalse generaals en kommandanten e.a.
No full textPreface signed: F.V.. Engelenburg [en] G.S. Preller.Mode of access: Internet
Die lewe, werk en invloed van F.V. Engelenburg in Suid-Afrika (1889 – 1938)
No full textPhD (History)--North-West University, Vaal Triangle Campus, 2015.This dissertation is a historical biography of F.V. Engelenburg (1863-1938) and covers the
period from 1889 to 1938, when Engelenburg lived and worked in South Africa. The study
situates Engelenburg in the historical landscape of the Zuid-Afrikaansche Republiek during
the late nineteenth and early twentieth century. The focus is mainly on Engelenburg’s
journalistic career at De Volksstem, but attention is also given to his many other interests,
including the development and promotion of Afrikaans and the Afrikaans academic culture,
especially in the northern parts of South Africa. His work pertaining to the development of
architecture, literature, aviation, the visual and performing arts, history, libraries, museums
and educational institutions comes under the spotlight. His private life is considered as well
in order to portray his versatility as a person. The chapters have been subdivided to highlight
the variety of matters he was involved in, and a chronological approach has been followed as
is customary in a biography.
The study is based on archival research. In particular, Engelenburg’s private collections were
used, as well as the private collections of some of his contemporaries. Engelenburg assumes a
central place in the biography, with special focus on how he perceived and experienced
conditions and everyday life in South Africa from the point of view of his transnational
European background. His role as influential opinion-maker and political commentator on
local and international politics is highlighted. His ties with political leaders and his
involvement in government affairs are emphasised. The study also refers to his continued
contact with his motherland, the Netherlands, and with the Dutch language. After the Anglo-
Boer War, he realised that the languages of the future in South Africa would be Afrikaans
(not Dutch), alongside English. His continuing support for Afrikaans as a language of
instruction in schools and universities and the development of the Afrikaans literature, as well
as his support for the standardization of Afrikaans helped to establish Afrikaans as an official
language alongside English and Dutch in South Africa. Engelenburg’s active contribution to
the work of the Zuid-Afrikaanse Akademie voor Taal, Lettere en Kuns (now the Suid-
Afrikaanse Akademie vir Wetenskap en Kuns), helped to put the organization on a sound
footing for future development. The Akademie can be seen as a living monument to his work
in South Africa.Doctora
Biografie van die taalstryder F.V. Engelenburg tot met die stigting van die S.A. Akademie in 1909
No full textThesis (M.A. (History))--North-West University, Vaal Triangle Campus, 2010.Frans Vredenrijk Engelenburg (1863-1938) played a major role in the development and expansion of Afrikaans and the Afrikaans academic culture - especially in the northern part of South Africa. As a Dutch intellectual, lawyer and journalist in the nineteenth century South African Republic (Transvaal), he in particular played an important role as advisor and opinion maker from the 1890s onward. One of his biggest achievements was the key role that he played in the establishment of De Zuid Afrikaanse Akademie voor Taal, Letteren en Kunst in 1909. This study is the first part of a more comprehensive biographical project on the life of Engelenburg and the role he fulfilled in the history of the Akademie and South Africa until the thirties of the twentieth century. Since the 1600s the Engelenburg family has played a prominent role in the community where they lived. Aside from the high positions they had held for centuries before, they had in the fourth and again in the sixth generation married into noble families. This contributed to their important position in the community. Due to circumstances Engelenburg was not raised in the Engelenburg milieu. A family break in 1836 was the cause that Engelenburg's father, as a baby, was spirited away from this family milieu. Engelenburg received an extraordinarily good schooling. The solid intellectual foundation already laid then, to a large extent determined the course of his life. He was at the Stedelijk Gymnasium Arnhem when he met Marie Koopmans-De Wet (1834-1906), an aunt by marriage who lived in Cape Town, when on a visit to Europe. She was his soul mate and acted as a mentor and advisor to Engelenburg. The friendship strengthened with the years. He already at school had the desire to visit South Africa one day. His parents' divorce when he was still a student at the University of Leyden, steered his life in a very different direction than what he had foreseen for himself. The divorce was to a large extent the reason that, although he had studied law, he discarded the notion of a career in law after only a year. His decision to follow a career in journalism affected the rest of his life. The Transvaal War (1880-1881) meant that the Dutch developed an admiration for the Transvaalers for the determination and courage they displayed in their attempts to defeat the British army. President Paul Kruger's call shortly after the war that the Transvaal needed young Dutchmen further encouraged Engelenburg to come to South Africa. Previously Engelenburg had for a year worked for Fred Hogendorp at the Dagblad van Suidholland en s’Gravenhage in The Hague. Circumstances abruptly changed when Hogendorp suddenly became insane. During the same time, the owner of De Volksstem newspaper in Pretoria had committed suicide and Engelenburg seized the work opportunity. Within a matter of three months, he arrived in the Transvaal. Within a month after his arrival he was appointed chief editor of De Volksstem. He had studied the Transvaal situation thoroughly and by means of the newspaper and through tireless efforts, he contributed to improving the farming community’s cultural literacy. The education situation in the Transvaal enjoyed his constant attention. After the Anglo-Boer War (ABW) (1899-1902), he continued to work towards improving the education system in the Transvaal. He early on became involved in the Transvaal University College (later University of Pretoria). Before the ABW he did everything possible to promote the Dutch language to the Boer people. However, after the war he realised that Afrikaans had a rightful place, and he, in addition to Dutch, became a champion for the Afrikaans language. The battle between the proponents of Dutch and Afrikaans respectively, increased after the ABW. To achieve unity of action between the two groups, De Zuid Afrikaanse Akademie voor Taal, Letteren and Kunst was founded in 1909. Behind the scenes Engelenburg was one of the major driving forces to assist with the founding of the organisation. As a board member and later as chairman, he gave impetus to the Akademie. In 2009 the organisation celebrated its centenary. This is an important milestone, especially seen in the light of the current political climate in South Africa. The Akademie can now be regarded as a monument to Engelenburg as the fruit of his labour and perseverance during the first three decades of the Akademie’s existence.Master
Vergelijking van de bereidingswijzen van 60 gew.% en 80 gew.% salpeterzuur
No full textDocument(en) uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science
Briton and Boer; both sides of the South African question.
No full textReprinted from the North American Review.The historical causes of the present war in South Africa, by J. Bryce.--England and the Transvaal, by S. Brooks.--A vindication of the Boers, by a diplomat.--A Transvaal view of the South African question, by F.V. Engelenburg.--The Transvaal war and European opinion, by K. Blind.--The South African question, by A. Carnegie.--Will the powers intervene in the war? By F. Charmes.--A possible continental alliance against England, by D.C. Boulger.--Philosophy and morals of war, by M. Nordau.--England, the Transvaal, and the European powers, by H. DelbruÌck.--Great Britain on the war-path, by V. Holmstrem and Prince Ookhtomsky.--Sir Redvers Buller: a character study, by E. Gosse.Mode of access: Internet
Mandibular kinematics in dentofacial deformities before orthognathic surgery
No full textAIM: Changes in facial morphology may cause disturbances in stomatognathic functions. The aim of the current investigation was to quantitatively assess the three-dimensional condylar paths during standardized mandibular movements in patients with dentofacial deformities before orthognathic surgery and in healthy subjects.
METHODS: Patients with dentofacial deformity were divided in two groups: DG-II (n = 15 with class II, mean age 26.3 years) and DG-III (n= 15 with class III, mean age 26.2 years), with 3 men and 12 women each, were assessed during the preoperative orthodontic treatment. Fifteen healthy young adults, paired for age and sex, were selected for control group. Mandibular kinematics were recorded during maximum mandibular border movements: mouth opening (MMO) and closing, lateral excursions and protrusion, using an infrared optoelectronic 3D-motion analyzer (BTS SMART System), with a 500 Hz sampling rate.
RESULTS: Patients and healthy subjects had similar age (1-way ANOVA, p≥0.05). The DG-II showed larger laterotrusion asymmetry than CG (Table 1). At MMO, the percentage of mandibular movement explained by condylar rotation was larger in the DG-III than DG-II (2-way ANOVA, p=0.001; Bonferroni post-hoc test, p=0.045, Figure.1).
CONCLUSION: The outcomes suggest that the proposed method could be a useful diagnostic tool to detect altered function in DG patients before orthognathic surgery. ACKNOWLEDGEMENT: Provost’s Office for Research of the University of São Paulo.
*The first author received a scholarship from CNPq (Science without Borders), Brazil.
Table 1: Kinematics indices of mandibular motion, mean±SD, 1-way ANOVA.
Measure
Control
DG-II
DG-III
p-value
Mean
SD
Mean
SD
Mean
SD
Maximum opening – MMO (mm)
47.8
4.0
44.8
5.5
46.5
7.2
0.360
MMO deviation (mm)
2.7
1.1
3.6
1.6
3.4
2.3
0.358
Maximum laterotrusion
9.7
2.1
8.9
1.7
8.1
1.7
0.068
Laterotrusion asymmetry
0.7*
0.7
2.6*
2.6
1.1
1.1
0.011
Maximum Protrusion
7.7
1.7
7.4
1.6
6.5
2.0
0.196
*=Bonferroni post-hoc test, p=0.014.
Figure 1: Percentage of mandibular rotation during mouth opening and closin
The Aero-Hydrodynamic Characteristics of Yachts Sailing Upwind in Waves
No full textA common practice during the design of a sailing yacht is to assume an ideal environment. The wind is constant in intensity and direction and the sea is calm. In this situation, an equilibrium between the aerodynamic and hydrodynamic forces and moments can be found. The equations of equilibrium are thus solved to find the best setup (combination of sails, sail trim, etc.) in order to achieve the maximum boat speed. This procedure is the core of a 'traditional' Velocity Prediction Program (VPP), which was first introduced in 1976. Since then many improvements have been made and nowadays VPPs are capable of dealing with the most diverse designs. However, in nearly forty years of life, the nature of these programs has not changed and, still, important dynamic effects caused by the real environment, are not taken into account. Investigating the performance of a yacht taking into account these effects, is far from easy. Indeed, the equations of equilibrium should be replaced by the more complicated equations of motion which need to be solved in the time domain. However, in recent years, the dynamic characteristics of a yacht sailing in waves and shifting winds (real environment) have become a more popular topic in the sailing yacht community. In the wake of the increasing interest towards this subject, the present work aims to investigate some important dynamic aspects. The effect of the surge motion and of the heeling angle on the motions of heave and pitch, and on the mean added resistance, are studied by means of towing-tank tests. These are performed on two models of series 4 of the Delft Systematic Yacht Hull Series. Then, time-domain simulations are performed to study the effect of a pitch-induced oscillating aerodynamic force on the seakeeping of yachts sailing upwind in waves. The aerodynamic force is calculated using a quasi-steady as well as an unsteady method, whereas the hydrodynamic part of the problem is tackled using a strip-theory program which is capable of considering asymmetric hull shapes (e.g. hulls with a heeling angle). The results show that surge has a small influence on the motions and on the mean added resistance alike. The heeling angle on the other hand, prove to have a large effect on the seakeeping of the models. This effect can be qualitatively predicted by the strip-theory program, although the trend is not always correct. Finally, in same cases, the aerodynamic force significantly affects the pitch and heave motions and this results in a considerable reduction of the added resistance in waves.Ship Hydromechanics and StructuresMaritime and Transport TechnologyMechanical, Maritime and Materials Engineerin
Stofoverdrachtsproblemen in geroerde gas-vloeistof-vast systemen
No full textApplied SciencesKramers Laboratorium voor Fysische Technologi
Een alternatief voor een verticale wand golfbreker: Vergelijking van verticale wand caisson met geperforeerd caisson
No full textCivil Engineering and Geoscience
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