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This thesis focuses on comparison of cermet cutting materials, which are used to manufacture reamer cutting edges. It contains review of current market reamer tools and suppliers of cermet semi-finished products. Cermet cutting tips were used to machine parts from carbon steel and analysis was made to compare wearing of the tools from different suppliers. This test was conducted on turning machine in working conditions typical for reaming. During this test there were taken notes on the wear of the tools and surface roughness of the part. The output of this is work is data processing, which indicates durability of each tested cermet.

Unpaved roads comprise about 72 percent of the national and provincial road network in South Africa and substantially more of the total southern African road network. Significant costs are incurred annually by the authorities on the maintenance of these roads and enormous sums are associated with the cost of using these roads. Specifications for the use of materials for unpaved roads in southern Africa abound, the origin of most of these, however being rather obscure. It would appear that many of them have been transferred from other countries, mostly in the northern hemisphere. The geological materials used for construction in southern Africa, having been subjected to aeons of weathering and minimal major periods of recent glaciation, differ greatly from those in the northern hemisphere. One of the main objectives of this research was to investigate the performance of local geological materials used in wearing courses for unpaved roads and relate this to their geotechnical properties. This involved the sampling, testing and monitoring of 110 sections of unpaved road in the Transvaal and South West Africa over a period of more than three years. A large data base of gravel height, roughness, rut and corrugation measurements and the severity and extent of dustiness, stoniness, potholes, cracks, loose material, slipperiness and trafficability was compiled. The material and performance data were then used to develop performance related specifications and prediction models for roughness progression and gravel loss with the aim of providing improved unpaved roads and consequently reducing the road user and maintenance costs, in the national interest. Some of the savings will obviously be off-set to some extent by slightly increased materials location and construction costs. These costs are, however, shown to be minimal in comparison with the potential savings to the road user, the national economy and the generally improved quality of life of many road users in southern Africa. A good knowledge of the geotechnical properties of potential wearing course materials (which are significantly dependent on the geological origin) is necessary to differentiate good gravels from poor ones. / Ongeplaveide paaie maak ongeveer 72 persent uit van die nasionale en provinsiale padnetwerk in Suid Afrika en heelwat meer van die totale padnetwerk van suidelike Afrika. Groot kostes word jaarliks aangegaan deur die owerhede vir die instandhouding van hierdie paaie, asook enorme kosts wat in verband gebring kan word met die gebruik van hierdie paaie. Materiaalspesifikasies vir ongeplaveide paaie in suidelike Afrika is volop. Die oorsprong van die meeste hiervan is egter twyfelagtig en dit wil voorkom of dit uit ander lande, hoofsaaklik in die noordelike halfrond, afkomstig is. Die geologiese materiale gebruik vir padkonstruksie in suidelike Afrika verskil grootliks van die in die noordelike halfrond. Dit was onderwerp aan eeue se verwering en minimale groot-skaalse onlangse glasiale werking verskil grootliks van die. Een van die hoof doelwitte van hierdie navorsing was om ondersoek in te stel na die werkverrigting van plaaslike geologiese materiale wat gebruik word vir die slytlaag van ongeplaveide paaie en om dit in verband te bring met hul Geotegniese eienskappe. Dit het behels monsterneming en toets van materiale, asook monitering van 110 seksies ongeplaveide pad in Transvaal en Suid-Wes Afrika oor 'n tydperk van drie jaar. 'n Groot databasis bestaande uit inligting oor metings van gruishoogte, ongelykheid, spoor en sinkplaat asook inligting van graad en omvang van stof, klipperigheid, slaggate, krake, los materiaal, glibberigheid en rybaarheid is saamgestel. Die materiaal- en werkverrigtingsdata is toe gebruik om werkverrigtingsverwante spesifikasies op te stel, asook om modelle daar te stel om verswakking in gelykheid, en gruisverlies te voorspel. Die doel is om beter ongeplaveide paaie te voorsien en gevolglik die padverbruikers- en onderhoudskoste in nasionale belang te verminder. 'n Gedeelte van die besparing sal onvermydelik deur effens duurder konatruksiekoste en moontlike langer vervoerafstande van materiaal gekanselleer word. Hiedie koste is egter minimaal in verhouding tot die potensiele besparing vir die padgebruiker, die nasionale ekonomie en die algemene verbetering in lewenskwaliteit van baie padgebruikers in suidelike Afrika. 'n Goeie kennis van die geotegniese eienskappe van potensiele slytlaagmateriale (wat grootliks afhanklik is van geologiese oorsprong) is noodsaaklik om te differensieer tussen goeie an swak gruise. / Thesis (PhD)--University of Pretoria, 1989. / Civil Engineering / Thesis (PhD)--University of Pretoria, 1989. / Unrestricted

The COVID-19 pandemic has impacted nearly everyone around the world, and it has led to a unique opportunity to draw new conclusions regarding social behavior. During the international COVID-19 pandemic, many recommendations have been established as potential mitigations to prevent the spread of the virus, perhaps most controversial, mask wearing. The present study aimed to identify the extent to which the degree of social discounting correlates with lower probabilities of mask wearing in individuals. It was hypothesized that the greater the social discounting, the less likely subjects would be to wear masks and conversely, the lower the social discounting the more likely subjects would be to wear masks.

Made available in DSpace on 2017-07-21T14:35:53Z (GMT). No. of bitstreams: 1 Marcelo Blood.pdf: 4265205 bytes, checksum: 85f7a28e03ab9bcd9c98dd277f6e646a (MD5) Previous issue date: 2016-03-11 / A Doença de Parkinson (DP) é uma doença neurodegenerativa crônica e progressiva,apresentando-se com sinais e sintomas motores e não-motores. A dor é uma sintoma não-motor frequente que pode surgir anos antes dos sintomas motores. O interesse neste tema tem aumentado, porém ainda não há um consenso a respeito de seus mecanismos e classificação. Por outro lado, o fenômeno wearing off (WO) é uma complicação do tratamento da DP que surge após anos de utilização da levodopa. O WO é caracterizado pela redução do efeito terapêutico com o ressurgimento gradual dos sintomas parkinsonianos. A dor, durante o período de WO, parece estar relacionada aos baixos níveis de dopamina e a análise das suas características poderia auxiliar na compreensão da sua fisiopatologia em pacientes com DP, assim como em outros casos de dor crônica. Com este objetivo, foram selecionados 34 pacientes com diagnóstico de DP idiopática e em uso de levodopa. Estes foram submetidos a um exame neurológico e uma entrevista semiestruturada para o registro das características da DP, da dor, a presença de depressão e a capacidade de cognição. O diagnóstico do WO foi realizado através do Questionário de Wearing Off (WOQ-19) e pela diferença na parte III da Unified Parkinson Disease Rating Scale (UPDRS) nos períodos ON e OFF. Complicações do tratamento com levodopa foram avaliadas pela parte IV da UPDRS. A dor foi avaliada através do Questionário de Dor de McGill, uma escala multidimensional que avalia as dimensões afetivo/motivacional e sensitivo/discriminativa da dor. O diagnóstico da dor neuropática foi realizado através da Escala LANSS (Leeds assessment of neuropathic symptoms and signs).Apenas a dor mais relevante para o paciente e com o mínimo de três meses de duração (dor crônica) foram incluídas na análise. A presença de depressão foi avaliada através da escala de depressão de Montgomery-Asberg (MADRS). A dor crônica foi encontrada em 61,8% (n=21) dos pacientes, dos quais 47,6% (n=10) apresentavam dor durante o WO. A dor do tipo musculoesquelética e em membros inferiores foi a mais prevalente. WO foi encontrado em 82,3% (n=28) dos pacientes, o que demonstrou ser um fator de risco para o desenvolvimento de dor crônica (P=0,021). A pontuação na parte IV da UPDRS foi maior nos pacientes com dor crônica, sugerindo uma frequência maior de complicações do tratamento neste grupo (P=0,027). Não foram encontradas diferenças em relação às características clínicas da DP entre os grupos com dor no WO e com dor fora do WO. No grupo de pacientes com dor no WO, 90% (n=9) obtiveram alívio com a administração de levodopa,demonstrando a associação da dor com os baixos níveis de dopamina desse período.Os pacientes com d r no WO apresentaram pontuação mais elevada na dimensão afetivo/motivacional da dor (P=0,022), reforçando o papel da dopamina na percepção afetiva da dor. / A Doença de Parkinson (DP) é uma doença neurodegenerativa crônica e progressiva, apresentando-se com sinais e sintomas motores e não-motores. A dor é uma sintoma não-motor frequente que pode surgir anos antes dos sintomas motores. O interesse neste tema tem aumentado, porém ainda não há um consenso a respeito de seus mecanismos e classificação. Por outro lado, o fenômeno wearing off (WO) é uma complicação do tratamento da DP que surge após anos de utilização da levodopa. O WO é caracterizado pela redução do efeito terapêutico com o ressurgimento gradual dos sintomas parkinsonianos. A dor, durante o período de WO, parece estar relacionada aos baixos níveis de dopamina e a análise das suas características poderia auxiliar na compreensão da sua fisiopatologia em pacientes com DP, assim como em outros casos de dor crônica. Com este objetivo, foram selecionados 34 pacientes com diagnóstico de DP idiopática e em uso de levodopa. Estes foram submetidos a um exame neurológico e uma entrevista semiestruturada para o registro das características da DP, da dor, a presença de depressão e a capacidade de cognição. O diagnóstico do WO foi realizado através do Questionário de Wearing Off (WOQ-19) e pela diferença na parte III da Unified Parkinson Disease Rating Scale (UPDRS) nos períodos ON e OFF. Complicações do tratamento com levodopa foram avaliadas pela parte IV da UPDRS. A dor foi avaliada através do Questionário de Dor de McGill, uma escala multidimensional que avalia as dimensões afetivo/motivacional e sensitivo/discriminativa da dor. O diagnóstico da dor neuropática foi realizado através da Escala LANSS (Leeds assessment of neuropathic symptoms and signs). Apenas a dor mais relevante para o paciente e com o mínimo de três meses de duração (dor crônica) foram incluídas na análise. A presença de depressão foi avaliada através da escala de depressão de Montgomery-Asberg (MADRS). A dor crônica foi encontrada em 61,8% (n=21) dos pacientes, dos quais 47,6% (n=10) apresentavam dor durante o WO. A dor do tipo musculoesquelética e em membros inferiores foi a mais prevalente. WO foi encontrado em 82,3% (n=28) dos pacientes, o que demonstrou ser um fator de risco para o desenvolvimento de dor crônica (P=0,021). A pontuação na parte IV da UPDRS foi maior nos pacientes com dor crônica, sugerindo uma frequência maior de complicações do tratamento neste grupo (P=0,027). Não foram encontradas diferenças em relação às características clínicas da DP entre os grupos com dor no WO e com dor fora do WO. No grupo de pacientes com dor no WO, 90% (n=9) obtiveram alívio com a administração de levodopa, demonstrando a associação da dor com os baixos níveis de dopamina desse período. Os pacientes com dor no WO apresentaram pontuação mais elevada na dimensão afetivo/motivacional da dor (P=0,022), reforçando o papel da dopamina na percepção afetiva da dor.

The scope of this thesis is to reveal the hidden dimensions of fashion. With the aim to stress the worth of participation and the individual experience of fashion. This work is questioning what we see, and later what is actually there. Through a thorough investigation of the knit technique the relationship of loop and thread (pause and activity) is the focus of this paper. Enhancing the significant qualities of the knitted technique, where material and shape is born simultaneously, the result presented holds a variety of results. With the aim to discuss multiple dimensions this knit investigation is presented in a fashion context. Styled with technical sportswear this work is challenging knitwear -as well as sportswear. By clashing sports connotated materials with the knitted wool, both fields are expanded and new options and expression are presented. The motive of this investigation is to further state the worth of fashion. To create a space for the experience of fashion, stating the various result that is not depending on the presentation on body. This work questions the pre-set truths and conventions of what fashion could be, and our ability to judge what is presented for us.

Buffalo Boys 100 years of wearing his heart on his sleeve is the sum of my experience at the University of Saskatchewan. It is an exploration of or coming to know my worldview. I have come to know that history is a construction, fragments of memory told through the bias of time, place and privilege. <p>Bison in the Bowl: This is Indian Land is a site of resistance. A layering of energy over matter through image projection over a colonizing space, the college building. I will place my family tipi in the bowl to honour the bison; the projected images will be of bison, buffalo boy and other contemporary aboriginal experiences. Through projection, I enlighten matter, a union of disparate histories that can be healed through the presence of an aboriginal healing device, the tipi. Happenings dependent on weather will occur September 21, 22 and 23. <p>Crow Chief Plenty Coups refused to speak of the years after the last wild bison herds were gone, saying, when the buffalo went away the hearts of my people fell to the ground, and they could not lift them again. After this nothing happened. <p>Nothing Happened: Old Sun represents the reconstruction of cultural icons through bison fragments, manufactured steel and a light from the Old Sun Residential School on the Blackfoot Reserve. Shadows of the past interrogate traditional and contemporary ideas. I believe that objects hold energy; this light that once shone above the heads of many children within the school is a witness to cultural genocide. Illumination of our histories can bring us out of the shadows and enlighten our being. Time is the Western paradox; it is to be played with. It is a container, a crypt that fragments real time image. It is a space of introspection and the cosmic dance. Bison Heart connects me to the heart of my art practice. In the context of my aboriginal experience, this painting can be romantic, iconic and political. I invite the viewer to move between the values to uncover their own meaning and relationship with the subject and self. <p>Gambling the Prairie Winnings is the construction of time through narrative, image and artifact. It is a serious and humorous view of how the west was dumb, it parodies the Western Development Museums centennial theme Winning the Prairie Gamble. The reinforcement of the colonial project occurs primarily through media, my intent is to subvert this medium. <p>Mission Impossible: Buffalo Boys Wild West Peep Show is an altar and a stage based on the first Blackfoot Mission church. It is a video projection where Buffalo Boy can dream of missions past, play in the present and vision the future. <p>This exhibition includes but is not limited to ideas within indigenous knowledge, meta/ quantum physics role in creating unity, the re-immergence of two-spirit peoples history, colonial or post -colonial critique, ecology, spirituality and healing modalities within the creative process. Through my art making I transcend the constructions of history, I heal myself for others to see, it is a new place from which to view the world.

Buffalo Boys 100 years of wearing his heart on his sleeve is the sum of my experience at the University of Saskatchewan. It is an exploration of or coming to know my worldview. I have come to know that history is a construction, fragments of memory told through the bias of time, place and privilege. <p>Bison in the Bowl: This is Indian Land is a site of resistance. A layering of energy over matter through image projection over a colonizing space, the college building. I will place my family tipi in the bowl to honour the bison; the projected images will be of bison, buffalo boy and other contemporary aboriginal experiences. Through projection, I enlighten matter, a union of disparate histories that can be healed through the presence of an aboriginal healing device, the tipi. Happenings dependent on weather will occur September 21, 22 and 23. <p>Crow Chief Plenty Coups refused to speak of the years after the last wild bison herds were gone, saying, when the buffalo went away the hearts of my people fell to the ground, and they could not lift them again. After this nothing happened. <p>Nothing Happened: Old Sun represents the reconstruction of cultural icons through bison fragments, manufactured steel and a light from the Old Sun Residential School on the Blackfoot Reserve. Shadows of the past interrogate traditional and contemporary ideas. I believe that objects hold energy; this light that once shone above the heads of many children within the school is a witness to cultural genocide. Illumination of our histories can bring us out of the shadows and enlighten our being. Time is the Western paradox; it is to be played with. It is a container, a crypt that fragments real time image. It is a space of introspection and the cosmic dance. Bison Heart connects me to the heart of my art practice. In the context of my aboriginal experience, this painting can be romantic, iconic and political. I invite the viewer to move between the values to uncover their own meaning and relationship with the subject and self. <p>Gambling the Prairie Winnings is the construction of time through narrative, image and artifact. It is a serious and humorous view of how the west was dumb, it parodies the Western Development Museums centennial theme Winning the Prairie Gamble. The reinforcement of the colonial project occurs primarily through media, my intent is to subvert this medium. <p>Mission Impossible: Buffalo Boys Wild West Peep Show is an altar and a stage based on the first Blackfoot Mission church. It is a video projection where Buffalo Boy can dream of missions past, play in the present and vision the future. <p>This exhibition includes but is not limited to ideas within indigenous knowledge, meta/ quantum physics role in creating unity, the re-immergence of two-spirit peoples history, colonial or post -colonial critique, ecology, spirituality and healing modalities within the creative process. Through my art making I transcend the constructions of history, I heal myself for others to see, it is a new place from which to view the world.

Bodydressed: Investigate alternative forms of wearing garments in relation to the body trough questioning garments fixed position and bodily relationship, using the own body and a bodystocking as a tool for draping.

Diaper dermatitis, an acute inflammatory reaction of the skin, is one of the most common forms of dermatitis among neonatal and pediatric patients. The problem addressed in this quality improvement project was the absence of an evidence-based practice (EBP) guideline for perineal care which resulted in 4 unexpected cases of diaper dermatitis per 100 hospital days at a non free standing children's hospital. Framed within Rosswurm and Larrabee's model for EBP, the purpose of this project was to develop an educational initiative encompassing an EBP guideline for perineal care, an educational curriculum plan for staff members, and a Power Point presentation to leadership on the educational initiative. A master's prepared pediatric nurse educator served as content expert to evaluate the educational curriculum plan using a dichotomous scale (not met = 1/met = 2) format for the 8 objectives. Each of the 8 items was scored a 2, meaning all objectives were covered in the curriculum. The expert recommended that the methods and procedures used should be placed in the employee orientation process. The educational initiative was presented to the leadership team (n = 11) who evaluated the project using a Likert-type scale ranging from 1 (strongly disagree) to 5 (strongly agree). An average score of 5 was given, revealing that the objectives of the presentation were met. The leadership team recommended that the project be implemented. Positive social change may result from this DNP project by facilitating neonatal/pediatric skin integrity through evidence-based nursing care thus promoting patient well-being and prevention of hospital acquired infections.