Historical change in the geomorphology, hydrodynamics, and surficial sediment of the tidal delta system of Tauranga Harbour are investigated with the general aim of analysing The general aims of this thesis are: firstly to analyse historical changes to inlet delta system geomorphology using historical hydrographic charts, secondly, to conduct hydrodynamic numerical modelling using historical bathymetries to access changes in peak spring flow and potential net tidal sediment transport, and thirdly, to analyse historical changes in surficial sediment and bedforms. Geomorphic change was investigated through plotting difference in bathymetry graphs and conducting cross sections taken from digisitied bathymetries obtained from historical hydrographic charts from 1852, 1879, 1901, 1927, 1954 and a modern bathymetry from 2006. Two-dimensional hydrodynamic numerical modelling was conducted to investigate the changes in peak tidal current flow and potential net sediment transport between 1852 and 2006. Changes in surficial sediment patterns were determined through completing a side scan sonar survey with associated sediment samples for ground truthing of grain size and underwater videography to gather surficial shell coverage information. This was used to produce a surficial sediment coverage map which was compared to historical studies Major geomorphological findings include that the shipping channel appears to have induced minor change in the geomorphology of the FTD but such changes are similar to those identified in the historical bathymetries of 1852, 1879, 1901, 1927, 1954 prior to dredging. Significant changes have occurred on the ETD, with the majority of the ETD showing scour of 1 m while the terminal lobe has extended seawards. This is associated with historical (since 1852) narrowing of the inlet from Panepane Point to Mt Maunganui by ~ 900 m. Hydrodynamic numerical modelling has shown a significant increase in potential net tidal sediment transport in the Cutter Channel due to dredging, while the Maunganui Roads Channel shows a reduction of net potential tidal sediment transport that is associated with the dredging of this channel. The area surrounding Panepane Point undergoes significant increases and decreases in net potential tidal sediment transport both before and after dredging Investigation of the surficial sediment patterns over the FTD and ETD from sidescan sonar and bottom samples show that between 1983 and 2007 there has been a northwards extension of the area of major shell (greater than 50 %) converge in the main ebb channel as well as reduction in major shell converge in flood tidal delta ebb shield region. The Maunganui Roads Channel changes from sitly sands to medium and fine sands.

The occurrence of chemical contaminants in the environment is one of the key issues the world isfacing today. Special effort has been put on the screening of endocrine disrupting compounds(EDCs), substances that have been shown to have adverse effects on the endocrine system. EDCs are mainly found in pharmaceuticals and personal care products (PPCPs), but also other products covering almost all categories of our daily life. EDCs can be both organic, such as the persistent organic pollutants (POPs), and inorganic, e.g. heavy metals. Today, all kinds of EDCs are currently being investigated on a large scale. Two EDC sub-categories that have gained increased public attention during the last years are organic flame retardants (FRs) and per- and polyfluoroalkylated substances (PFASs). Both categories have shown to be bioaccumulating, persistent and toxic, which has led to banning of several substances in both categories. However, as both FRs and PFASs are considered to be emerging POPs, their fate and behaviour in the environment are still in great need of research. FRs and PFASs often end up in surface waters due to their disinclination of getting removed in waste water treatment plants (WWTPs) and their persistence. Thus, the objective of this project was to provide a snapshot of the current situation of FRs and PFASs in Swedish rivers, including both smaller streams and bigger rivers. Grab water samples were taken at 25 sites for FRs and 44 for PFASs in rivers all over Sweden. The results showed that sparsely populated areas such as the northern part of Sweden generally showed lower concentrations of PFASs in the water than the southern part did. The summarised concentrations of FRs ranged from 37 ng L-1 to 4.6 μg L-1, and from 0.59 ng L-1 to 59 ng L-1 for the detected PFASs, which was in good comparison to previous studies carried out on surface water in Europe. The percentile composition, the so-called fingerprint, showed significant differences between the southern part and the northern part for both FRs and PFASs, but also great similarities between some of the rivers with the highest measured PFASs concentrations. The highest loads of both FRs and PFASs were detected in Delångersån, which is one of the smaller rivers screened and likely to be affected by a nearby industrial point source. The European environmental quality standard of 0.65 ng L-1 of perfluorooctane sulfonic acid (PFOS) was exceeded in 12 of all 44 sampled rivers.

This paper studies the policy changes that have led to the design and early implementation of the land restitution program in Colombia. I use the land reform literature to frame land reform efforts in Colombia within the larger ideological discussion on land reform. The study maps out the roles of the main actors that influenced the actions of government regarding land reform and their role in shaping the present policies affecting land restitution. The paper argues that although the land restitution program provides an opportunity to initiate a peace building process and should be seriously considered as a measure to compensate the victims of the armed conflict, the present rural development model is an impediment to its success. Although, the more progressive coalition was able to achieve the approval of the land restitution program, the success of the program relies entirely on the wider rural development model being currently embraced in the country. The present rural development model puts an emphasis on the exploitation of extractive resources and other mega projects responding to global market demands; while illicit crops continue to provide an easy and profitable livelihood opportunity for many in the countryside. Such development does not support the livelihoods of returnees and thus does not compliment the land restitution program. The success of the land restitution program thus remains in doubt. The reason is that powerful actors support a neoliberal development model that continues to dominate the political agenda.

Universiẗat, Diss., 2002--München.

Made available in DSpace on 2016-12-06T17:06:47Z (GMT). No. of bitstreams: 1 Marcio Fagundes Goethel.pdf: 1590838 bytes, checksum: 1839448bf478fedce4eed161ec9e8a38 (MD5) Previous issue date: 2012-02-23 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The objective of this study was to analyze the characteristics of grip in Judo. The study included 08 athletes with a degree of black belt in Judo, male, over 18 years, competing at the international level and who seek to place the 2012 London Olympics. To characterize the types of grip that make up the judo technique to grab the opponent, there were shots of fighting athletes in training, was used a spreadsheet where identifies the type of grip on the judogi specific locations and also in relation to specific by hand. As for the quantification of the kind of grip on fighting, videos of international competitions were analyzed, was used a spreadsheet that quantifies the number of grips on each site judogi the opponent, so that later was made an indirect relationship with the spreadsheet data characterization and thus to obtain a quantification of the types of grip in international fights. For the measurement of handgrip dynamometers were used developed by Instrumentation Laboratory (LABIN/CEFID/UDESC). The handgrip strength was measured for 30 seconds, three times in the dominant hand and three times in the non dominant hand with measures interspersed in his hands, sitting, adapted from the American Society of Hand Therapists (ASHT). Was analyzed the following parameters of the Force vs. Time curve of the grip types identified, maximum force (FMAX), reaction time (TREACT), time to maximum force (TFMAX), growth rate of force (TXCRESC) and the Index fall of force (IQ). Among the results cited that were identified in all three ways to grip used by judokas: Full Palmar, digit-palmar and a third consisting of an association between Digit-palmar and lateral pinch. To check the difference in the use of forms of grip, between the dominant and non dominant hand was used Wilcoxon test where differences were found in the use of all forms of grip, in his hands. To see if there was a difference between the parameters of force-time curve of the ways to grip seen between the dominant and non dominant hand was used T test for paired data in the parametric data and Wilcoxon test for non-parametric, difference lying only in the Index fall of force of the Full palmar. To correlate the use of a way to grip with the behavior of their parameters from force-time curve was used Pearson's correlation test for parametric data and Spearman correlation test for non-parametric, and correlation was found in four cases. Two correlations were positive: use of Digit-palmar grip and the maximum force Full Palmar in the dominant hand and Full Palmar grip use and time to the maximum force in the non dominant hand. The other two correlations are presented as negative: Full Palmar grip use and maximum force Palmar grip in the dominant hand and the use of the association of Digit-palmar and lateral pinch and reaction time of lateral pinch grip on non dominant hand. The data obtained from the study demonstrate the difference function and use of the hands of judo, and how the usage is correlated with the parameters of force-time curve, explaining a specific conditioning. / O objetivo deste trabalho foi analisar as características da preensão manual no Judô. Participaram do estudo 08 praticantes de judô com graduação de faixa preta, do sexo masculino, maiores de 18 anos, que competem em nível internacional e que buscam vaga para a Olimpíada de Londres 2012. Para a caracterização dos tipos de preensão que compõem a pegada do Judô, foram realizadas filmagens dos atletas desempenhando pegadas no treinamento, utilizou-se uma planilha onde se identifica o tipo de preensão em locais específicos do judogui e com especificidade também em relação à mão. Já para a quantificação do tipo de preensão em lutas, vídeos de competições internacionais foram analisados, utilizou-se uma planilha que quantifica o número de pegas em cada local do judogui do adversário, para que posteriormente fosse realizada uma relação indireta com os dados da planilha de caracterização e assim obtivesse-se uma quantificação dos tipos de preensão em lutas internacionais. Para a mensuração da preensão manual foram utilizados dinamômetros desenvolvidos pelo Laboratório de Instrumentação (LABIN/CEFID/UDESC). A Força de preensão manual foi avaliada durante 30 segundos, três vezes na mão dominante e três vezes na mão não dominante com mediadas intercaladas entre as mãos, na posição sentada, adaptada da Sociedade Americana de Terapeutas da Mão (ASHT). Foram analisados os seguintes parâmetros da curva de Força x Tempo dos tipos de pega identificados, Força máxima (FMAX), Tempo de reação (TREACT), o Tempo até a força máxima (TFMAX), Taxa de crescimento da força (TXCRESC) e o Índice de queda da força (IQ). Entre os resultados cita-se que foram identificadas no total três formas de pega utilizadas pelos judocas: Palmar Plena, Dígito-palmar e uma terceira que consiste em uma associação entre Dígito-palmar e Pinça Lateral. Para verificar a diferença no uso das formas de pega, entre a mão dominante e não dominante foi utilizado o Teste de Wilcoxon onde foi encontrada diferença no uso de todas as formas de pega, entre as mãos. Para verificar se existia diferença entre os parâmetros da curva força x tempo das formas de pega identificadas entre a mão dominante e não dominante foi utilizado Teste T para dados pareados nos dados paramétricos e Teste de Wilcoxon para os não paramétricos, encontrando diferença somente no Índice de queda da força de preensão Palmar Plena. Para correlacionar o uso de uma forma de pega e o comportamento de seus respectivos parâmetros da curva força x tempo foi utilizado o Teste de Correlação de Pearson para os dados paramétricos e o Teste de Correlação de Spearman para os não paramétricos, sendo que foi encontrada correlação em quatro casos. Duas correlações obtiveram resultado positivo: uso de preensão Dígito-palmar e a força máxima Palmar Plena na mão dominante e o uso da preensão Palmar Plena e o tempo até a força máxima na mão não dominante. As outras duas correlações se apresentaram como negativas: uso da preensão Palmar Plena e a força máxima de preensão Palmar na mão dominante e uso da associação Dígito-palmar e Pinça Lateral e o tempo de reação da preensão de Pinça Lateral na mão não dominante. Os dados obtidos com a pesquisa demonstram a diferença de função e de utilização das mãos dos judocas, bem como de que forma a utilização se correlaciona com parâmetros da curva de força x tempo, explicando um condicionamento específico.

Nesta tese, analisamos o processo de formação da propriedade capitalista no estado do Amazonas. Para tanto, buscamos responder aos seguintes questionamentos: como estão distribuídas as terras no Estado? Como tem se constituído histórica e juridicamente a propriedade? Quais os mecanismos utilizados na apropriação privada da terra? Quais os sujeitos que rivalizam e de qual maneira ocorrem as disputas pela posse do território? A pesquisa partiu de trabalhos de campo e de levantamentos documentais, buscando garantir um compromisso com a realidade, tendo em vista que optamos pelo método materialista e seguimos com análise fundamentada em conceitos e teorias. Verificamos que a apropriação privada da terra surgiu da disputa territorial ainda nos primórdios da colonização europeia da região, caracterizada pelo genocídio de povos indígenas, e se prolongou até a década de 1980, com essa mesma característica. A apropriação privada da terra é também predominantemente realizada fora dos limites legais e não tem por prioridade a ocupação ou produção capitalista. A grilagem e o rentismo estão entre as principais características dos grandes imóveis. Outra característica é justamente a alta concentração fundiária. Essa conjuntura tem gerado importantes conflitos agrários envolvendo grileiros de terras e empresários capitalista, de um lado, e camponeses posseiros e povos indígenas, do outro, redundando em um quadro crônico de violência. / In this thesis, we analyze the process of formation of capitalist property in the State of Amazonas. For this purpose, we seek to answer the following questions: how are the lands distributed in the State? How has the property been historically and legally constituted? What are the mechanisms used in private ownership of land? What are the subjects who compete and in what way do the disputes for the possession of the territory occur? The research was based on fieldwork and documentary surveys, seeking to guarantee a commitment to reality, considering that we opted for the materialistic method, and followed with an analysis based on concepts and theories. We verified that the private appropriation of land emerged from the territorial dispute still in the early days of European colonization of the region, characterized by the genocide of indigenous peoples, and lasted until the 1980s, with the same characteristic. The private appropriation of land is also predominantly made outside the legal limits, and capitalist occupation or production is not a priority. Public land fraud and rentism are among the main characteristics of large properties. Another characteristic is precisely the high concentration of land. This situation has generated important agrarian conflicts involving land grabbers and capitalist entrepreneurs, on the one hand, and squatter peasants and indigenous peoples, on the other, resulting in a chronic situation of violence.

The assignment of this thesis is a design of the wood manipulation grab to be used with small hydraulic cranes. The aim is to design a grab with lifting capacity of 2000 kg. The results of thesis can be used to diversify production of the company Agama a.s. Primarily, the grab should be lightweight, easy to manufacture and affordable.

Calibration methods for quantitative on-site sampling using solid phase microextraction (SPME) were developed based on diffusion mass transfer theory. This was investigated using adsorptive polydimethylsiloxane/divinylbenzene (PDMS/DVB) and Carboxen/polydimethylsiloxane (CAR/PDMS) SPME fiber coatings with volatile aromatic hydrocarbons (BTEX: benzene, toluene, ethylbenzene, and o-xylene) as test analytes. Parameters that affected the extraction process (sampling time, analyte concentration, water velocity, and temperature) were investigated. Very short sampling times (10-300 s) and sorbents with a strong affinity and large capacity were used to ensure a 'zero sink' effect calibrate process. It was found that mass uptake of analyte changed linearly with concentration. Increase of water velocity increased mass uptake, though the increase is not linear. Temperature did not affect mass uptake significantly under typical field sampling conditions. To further describe rapid SPME analysis of aqueous samples, a new model translated from heat transfer to a circular cylinder in cross flow was used. An empirical correlation to this model was used to predict the mass transfer coefficient. Findings indicated that the predicted mass uptake compared well with experimental mass uptake. The new model also predicted rapid air sampling accurately. To further integrate the sampling and analysis processes, especially for on-site or <i>in-vivo</i> investigations where the composition of the sample matrix is very complicated and/or agitation of the sample matrix is variable or unknown, a new approach for calibration was developed. This involved the loading internal standards onto the extraction fiber prior to the extraction step. During sampling, the standard partially desorbs into the sample matrix and the rate at which this process occurs, was for calibration. The kinetics of the absorption/desorption was investigated, and the isotropy of the two processes was demonstrated, thus validating this approach for calibration. A modified SPME device was used as a passive sampler to determine the time-weighted average (TWA) concentration of volatile organic compounds (VOCs) in air. The sampler collects the VOCs by the mechanism of molecular diffusion and sorption on to a coated fiber as collection medium. This process was shown to be described by Fick's first law of diffusion, whereby the amount of analyte accumulated over time enable measurement of the TWA concentration to which the sampler was exposed. TWA passive sampling with a SPME device was shown to be almost independent of face velocity, and to be more tolerant of high and low analyte concentrations and long and short sampling times, because of the ease with which the diffusional path length could be changed. Environmental conditions (temperature, pressure, relative humidity, and ozone) had little or no effect on sampling rate. When the SPME device was tested in the field and the results compared with those from National Institute of Occupational Health and Safety (NIOSH) method 1501 good agreement was obtained. To facilitate the use of SPME for field sampling, a new field sampler was designed and tested. The sampler was versatile and user-friendly. The SPME fiber can be positioned precisely inside the needle for TWA sampling, or exposed completely outside the needle for rapid sampling. The needle is protected within a shield at all times hereby eliminating the risk of operator injury and fiber damage. A replaceable Teflon cap is used to seal the needle to preserve sample integrity. Factors that affect the preservation of sample integrity (sorbent efficiency, temperature, and sealing materials) were studied. The use of a highly efficient sorbent is recommended as the first choice for the preservation of sample integrity. Teflon was a good material for sealing the fiber needle, had little memory effect, and could be used repeatedly. To address adsorption of high boiling point compounds on fiber needles, several kinds of deactivated needles were evaluated. RSC-2 blue fiber needles were the more effective. A preliminary field sampling investigation demonstrated the validity of the new SPME device for field applications.

Calibration methods for quantitative on-site sampling using solid phase microextraction (SPME) were developed based on diffusion mass transfer theory. This was investigated using adsorptive polydimethylsiloxane/divinylbenzene (PDMS/DVB) and Carboxen/polydimethylsiloxane (CAR/PDMS) SPME fiber coatings with volatile aromatic hydrocarbons (BTEX: benzene, toluene, ethylbenzene, and o-xylene) as test analytes. Parameters that affected the extraction process (sampling time, analyte concentration, water velocity, and temperature) were investigated. Very short sampling times (10-300 s) and sorbents with a strong affinity and large capacity were used to ensure a 'zero sink' effect calibrate process. It was found that mass uptake of analyte changed linearly with concentration. Increase of water velocity increased mass uptake, though the increase is not linear. Temperature did not affect mass uptake significantly under typical field sampling conditions. To further describe rapid SPME analysis of aqueous samples, a new model translated from heat transfer to a circular cylinder in cross flow was used. An empirical correlation to this model was used to predict the mass transfer coefficient. Findings indicated that the predicted mass uptake compared well with experimental mass uptake. The new model also predicted rapid air sampling accurately. To further integrate the sampling and analysis processes, especially for on-site or <i>in-vivo</i> investigations where the composition of the sample matrix is very complicated and/or agitation of the sample matrix is variable or unknown, a new approach for calibration was developed. This involved the loading internal standards onto the extraction fiber prior to the extraction step. During sampling, the standard partially desorbs into the sample matrix and the rate at which this process occurs, was for calibration. The kinetics of the absorption/desorption was investigated, and the isotropy of the two processes was demonstrated, thus validating this approach for calibration. A modified SPME device was used as a passive sampler to determine the time-weighted average (TWA) concentration of volatile organic compounds (VOCs) in air. The sampler collects the VOCs by the mechanism of molecular diffusion and sorption on to a coated fiber as collection medium. This process was shown to be described by Fick's first law of diffusion, whereby the amount of analyte accumulated over time enable measurement of the TWA concentration to which the sampler was exposed. TWA passive sampling with a SPME device was shown to be almost independent of face velocity, and to be more tolerant of high and low analyte concentrations and long and short sampling times, because of the ease with which the diffusional path length could be changed. Environmental conditions (temperature, pressure, relative humidity, and ozone) had little or no effect on sampling rate. When the SPME device was tested in the field and the results compared with those from National Institute of Occupational Health and Safety (NIOSH) method 1501 good agreement was obtained. To facilitate the use of SPME for field sampling, a new field sampler was designed and tested. The sampler was versatile and user-friendly. The SPME fiber can be positioned precisely inside the needle for TWA sampling, or exposed completely outside the needle for rapid sampling. The needle is protected within a shield at all times hereby eliminating the risk of operator injury and fiber damage. A replaceable Teflon cap is used to seal the needle to preserve sample integrity. Factors that affect the preservation of sample integrity (sorbent efficiency, temperature, and sealing materials) were studied. The use of a highly efficient sorbent is recommended as the first choice for the preservation of sample integrity. Teflon was a good material for sealing the fiber needle, had little memory effect, and could be used repeatedly. To address adsorption of high boiling point compounds on fiber needles, several kinds of deactivated needles were evaluated. RSC-2 blue fiber needles were the more effective. A preliminary field sampling investigation demonstrated the validity of the new SPME device for field applications.

Toilet grab bars were intended to facilitate independent and safe toilet transfer for people with different abilities. However, standard grab bars require too much effort from older adults who typically transfer to the toilet in a standing position rather than a sitting position. Among existing grab bars, grab bars on both sides of the toilet worked best for older adults because they allowed older adults to use both arms to get on and off the toilet. However, based on our observation, these grab bars were not effective to assist older adults to get in and out of the wheelchair. Additionally, these grab bars are too far apart that older adults have to use their shoulders rather than arms, which arise problems because shoulder are typically weaker than arms. This study intends to solve this problem by developing a new grab bar which would be safer, easier and more comfortable to use. Based on the literature review, analysis of existing grab bars and observation, a new concept of grab bars was generated and a functional prototype was constructed for user testing. The prototype was proved to be safe, easy and comfortable to use in the entire transfer process and it reduced the use of wheelchairs as well.