François Rabbath a maintenant plus de 80 ans ; il sillonne toujours le monde en tant que soliste et professeur. Sa contribution majeure à la pédagogie de la contrebasse est sa méthode en 4 volumes : La nouvelle technique de la contrebasse. Sa méthode est une nouvelle approche de l'enseignement de la contrebasse.Pour F. Rabbath, la qualité de la musique depend de : l'instrument, les cordes, l'archet, la position des mains.Sa contrebasse datée de 1936, a été fabriquée par Ch. Quenoil. C'est un instrument pour les solistes aux petites épaules, mais par sa sonorité est ample comme celle d'un instrument de l'orchestre, l'ampleur qui se combine avec la facilité de jeu d'une petite contrebasse.En s'intéressant à la pique comme à un axe d'équilibre entre le bas et la tête de l'instrument, il découvrit aussi que le matériau dont la pique est construite permet d'avoir plus ou moins de vibrations.Le luthier Ch. Laborie avec F. Rabbath ont eu l'idée d'une solution élégante, une tige de carbone mise directement en bas de la contrebasse dans l'angle précis. Cette nouvelle version de la pique s'appelle la « pique Rabbath-Laborie ».Gerold Genßler (chef d'une entreprise allemande indépendante de fabrication de cordes) demanda de l'aide à F. Rabbath pour découvrir le son d'une nouvelle corde ; F. Rabbath joua ensuite avec ces cordes.Dans la Nouvelle technique de la contrebasse, F. Rabbath a divisé la touche en 6 positions, définies en fonction de l'harmonie naturelle des cordes. Cela vient de l'utilisation élargie du placement des doigts, non pas de l'extension du mouvement. Cela vient aussi de l'élargissement de la main pour atteindre de nouvelles notes : F. Rabbath appelle cette technique pivot. Le joueur peut utiliser par exemple la position 1, 2 ou 3, sans forcément bouger la main, mais seulement en plaçant le pouce à la bonne place, et en remuant la main d'avant en arrière. Cette méthode de pivot permet la succession de différentes positions.La technique du crabe découverte par F. Rabbath est constituée par le mouvement de la main qui ressemble à la marche d'un crabe, de côté. Il permet à une partie de cette main de bouger lorsque l'autre est immobile, puis inversement. Ainsi elle peut monter et descendre le long de la corde dans certains passages sans changer de position.F. Rabbath a développé un nombre important de variation de coups d'archet. Cette méthode est différentes des autres qui se concentrent sur certains segments de la contrebasse plutôt qu'uniquement sur la touche.F. Rabbath a travaillé sur la théorie qui contribue au développement de la méthode d'enseignement de la contrebasse, à travers ses années d'enseignement et sa riche expérience, il donne plus d'importance à la relation entre l'interprétation et l'éducation. Dans cette méthode, il développe l'art d'être un artiste et son désir de partager sa passion de la contrebasse. / Although F. Rabbath is more than 80 years old, he goes on traveling all over the world as a soloist and as a teacher. The major contribution of the double-bass pedagogy is the method of the double-bass playing published in the four volumes of the Nouvelle technique de la contrebasse (trad. New Technique of double-bass).His Nouvelle technique de la contrebasse is a new approach to double-bass playing in the pedagogy of this instrument. For F. Rabbath, to get a good quality of music all is important : the sound of the instrument, of the string, of the bow and also the position of the hands, etc.His double-bass was built by Charles Quenoil in 1936. It is the instrument for soloists with « small shoulders », and with a pitch like an orchestral instrument. It seems that this form combines the size of an orchestral instrument sound with the easiness of the playing of a small double-bass.F. Rabbath discovered how the endpins influence the playing. By focusing on the endpins as a balance between the bottom and top of the instrument, he also discovered how the material used for endpins allows more or less vibrations.He and Christian Laborie « took the idea to an elegant solution with a graphite rod installed directly into the end block at the proper angle.1» The new and improved version is called The Rabbath-Laborie Endpin.
Gerold Genßler, germany independent production, asked F. Rabbath for help discovered the new string sound. After his production, F. Rabbath play with these strings.
In Nouvelle technique de la contrebasse F. Rabbath divided the fingerboard into six positions, defined by the location of natural harmonics on the strings. This is done by using extension fingerings, not extensions with shifts. It is an extension where there is a widening of the hand to reach a new note. F. Rabbath called this technique « pivot ».The player can use for example first, second, third positions without the need for shifts but only by placing the thumb in an appropriate place and just rocking the hand back and forth. Thus, the pivot method enables the succession of several different positions. The « Crab Technique », is another technique discovered by Francois Rabbath. The hand movement resembles a crab's sideways walking : allows for part of the hand to move while the other part remains and vice versa - in this way the hand can move up and down the strings in certain passages without ever fully shifting.
F. Rabbath has also developed a number of bowing variations, from whole notes to even faster, middle, tip, and then middle parts of the bow.F. Rabbath works on the theory contributes to the development of the teaching methodology of the double-bass. Over the years has been, still is, teaching the importance of the movement and the position of the body, more than musical. For him, this is the base towards good interpretation of any level of music.In his method François Rabbath also develops his art of being an artist and the desire to share and pass his passion for the double-bass.

Submitted by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-04-10T13:06:53Z No. of bitstreams: 1 IranseOliveiraSilvaTese2016.pdf: 9426128 bytes, checksum: d895bf162b329c1f4909c6a33a1845f4 (MD5) / Approved for entry into archive by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-04-10T13:12:23Z (GMT) No. of bitstreams: 1 IranseOliveiraSilvaTese2016.pdf: 9426128 bytes, checksum: d895bf162b329c1f4909c6a33a1845f4 (MD5) / Made available in DSpace on 2017-04-10T13:12:23Z (GMT). No. of bitstreams: 1 IranseOliveiraSilvaTese2016.pdf: 9426128 bytes, checksum: d895bf162b329c1f4909c6a33a1845f4 (MD5) Previous issue date: 2016-03-29 / Aviation is the most effective means of transportation that exists today, serving billions of people every year. However stressors present in air travel cause autonomic changes occur, requiring the body an ability to deal with these factors. Therefore preventive and/or mitigating strategies of these effects need to be understood. The study aims to evaluate the autonomic and cardiovascular responses that occur in flight and its relationship to physical fitness. The research was done through two studies, where healthy men had the components of physical fitness: aerobic capacity, muscular strength and body fat previously evaluated; and the registration of heart rate variability (HRV) performed in a control day and a flight day. The first study 11 fighter pilots reported 3h HRV and had the level of dehydration during a test flight measured by hematocrit change. The flight lasted 1 hour and all underwent the same operating procedures. The second study, 22 passengers of commercial aviation, recorded 24h HRV and blood pressure simultaneously. The results of the study show that a supersonic flight caused a reduction in most HRV parameters during flight when compared with the control day. There is no autonomic anticipation. Entropy correlated with aerobic capacity and body fat. Dehydration generated by the flight changed HRV (RMSSD and SD1). The second study demonstrates that the commercial flight caused a reduction in most HRV parameters during flight (RMSSD; SD1; SampEn; LnHF; 1), and in 24h when compared with control day (FC; LnHF; 2). There was autonomic anticipation. The blood pressure and Rate-Pressure Product were significantly higher on the flight, with the largest increases two hours before the flight and staying elevated for up to two hours. The lower the body fat percentage and BMI, the greater the HRV during the flight day (RMSSD; LF; HF; SD1). Already the aerobic capacity the higher, the greater the HRV during the flight (LnLF; LnHF). Conclusions: The flight, in both situations and people, demanded the body autonomic responses generating significant vagal withdrawal, an increase in heart rate. The body fat and aerobic capacity, indicators of physical fitness, correlated with HRV, however differently in the two populations and situations: fighter pilots (SampEn) and passengers of commercial aviation (RMSSD; LF; HF; SD1). Dehydration generated by supersonic flight influence on HRV. The blood pressure (SBP, DBP, MAP) is influenced by virtue of flight in comparison of 24h. The autonomic changes relating correlate with aerobic capacity and body fat differently in pilots of supersonic jets and passenger commercial aircraft undergoing flight. The relative strength was not correlated with HRV parameters in any of the populations studied. / A avia????o ?? o meio de transporte mais eficaz que existe na atualidade, atendendo a bilh??es de pessoas a cada ano. Contudo, os fatores estressantes presentes nos deslocamentos a??reos fazem que altera????es auton??micas e cardiovasculares ocorram, exigindo do organismo uma capacidade de lidar com estes fatores. Por isto estrat??gias preventivas e/ou minimizadoras desses efeitos precisam ser entendidas. O estudo buscou verificar as respostas auton??micas e cardiovasculares que ocorrem em voo e sua rela????o com a aptid??o f??sica. A pesquisa deu-se por meio de dois estudos, em que homens saud??veis tiveram os componentes da aptid??o f??sica (capacidade aer??bia, for??a muscular e gordura corporal) previamente avaliadas; e o registro da variabilidade da frequ??ncia card??aca (VFC) realizado em um dia controle e em um dia de voo. No primeiro estudo 11 pilotos de ca??a registraram 3h de VFC e tiveram o n??vel de desidrata????o mensurado durante um voo de teste avaliado pela mudan??a do hemat??crito. O voo durou 1h e todos realizaram os mesmos procedimentos operacionais. No segundo estudo, 22 passageiros da avia????o comercial registraram 24h de VFC e simultaneamente ?? press??o arterial. Os resultados do estudo 1 demonstra que o voo induziu uma redu????o na maioria dos par??metros da VFC durante o voo quando comparado com o dia controle, n??o havendo antecipa????o auton??mica. A entropia amostral da FC correlacionou-se com a capacidade aer??bia e a gordura corporal. A desidrata????o gerada pelo voo alterou a VFC. O estudo 2 demonstrou que o voo comercial induziu a uma redu????o na maioria dos par??metros da VFC durante o voo, e em alguns par??metros nas 24h quando comparado com o dia controle. Houve antecipa????o auton??mica uma hora antes do voo. A press??o arterial e duplo produto foram significativamente maiores no dia do voo, tendo os maiores incrementos duas horas antes do voo e mantendo-se elevados por at?? duas horas ap??s. Quanto menor o percentual de gordura e IMC, maior a VFC durante o dia do voo. Quanto mais elevada a capacidade aer??bia, maior a VFC durante o voo. Conclus??es: o voo, em ambas as situa????es e popula????es, exigiu do organismo respostas auton??micas gerando significativa retirada vagal, com incremento da frequ??ncia card??aca. A gordura corporal e a capacidade aer??bia, indicadores da aptid??o f??sica, correlacionaram-se com a VFC, contudo de forma diferente nas duas popula????es e situa????es. A desidrata????o gerada pelo voo militar influenciou na VFC. A press??o arterial (PAS; PAD; PAM) sofre interfer??ncia em virtude do voo na compara????o das 24h. As altera????es auton??micas se correlacionam com a capacidade aer??bia e gordura corporal de forma diferenciada em pilotos militares e passageiros da avia????o comercial submetidos ao voo. A for??a relativa n??o apresentou correla????o com os par??metros da VFC em nenhuma das popula????es estudadas.

We investigate F-Borel topological spaces. We focus on finding out how a complexity of a space depends on where the space is embedded. Of a particular interest is the problem of determining whether a complexity of given space X is absolute (that is, the same in every compactification of X). We show that the complexity of metrizable spaces is absolute and provide a sufficient condition for a topological space to be absolutely Fσδ. We then investigate the relation between local and global complexity. To improve our understanding of F-Borel spaces, we introduce different ways of representing an F-Borel set. We use these tools to construct a hierarchy of F-Borel spaces with non-absolute complexity, and to prove several other results. 1

Due to the rapid development of telecommunication devices, operating speeds are getting faster and more power is being consumed by those devices. Therefore, there is a big concern on how to prolong the battery life in order to fit consumers’ needs. Power amplifiers (PA) at the front end of wireless equipment have drawn a big concern from engineers because of their large power consumption in the system. There is a lot research conducted on PA solutions for improving power-added efficiency (PAE) of amplifiers. PAE is a figure of merit representing how efficient the PA converts DC power to RF power. With PAE increased, the device is able to output the same amount of power with less DC power consumed. Non-linear Class-F and Class-F-1 PAs have drawn the most attention among all different classes of PAs from engineers because of their capability of outputting high power and providing good PAE. Class-F boosts up PAE by controlling the harmonic content at the output. Advanced Design System (ADS) from Agilent is used for design and simulation based on the ADS model of Cree’s CGH40010 high electron mobility transistor (HEMT). A high efficiency power amplifier is fabricated on RT/duroid 5870 high frequency laminate board. In this design, the harmonics at the input are controlled as well as the harmonics at the output. An input wave-shaping network is designed to shape the waveforms at the gate. In this case, the PAE is boosted 30% higher than the PA with only the output wave-shaping network. By terminating harmonics with proper impedances at the output, a square voltage waveform and a half-sine current waveform are obtained at the transistor drain terminal. The overlapping area between the voltage and current waveforms can be reduced as well as the active device power consumption. The final design operating at 1GHz produced a PAE of 89% with 38.35dBm output power in simulation and PAE of 78% with 38.7dBm output power as the result of the IEEE PA design contest. The thesis has shown the effectiveness of the Class-F PA to boost up PAE by preventing the 2nd and 3rd harmonic power from delivering to the load and shaping the waveforms at the transistor terminals. It also shows the benefit of using radial stubs in wave-shaping networks over open-circuit stubs.

<p>Abstract.</p><p>The levels of dioxin and comparable substances rose to a large extent in our environment during the second half of the 20'Th century. This was the result of the synthesis of, and careless usage of these substances in cooling fluids, hydraulics, pesticides etc. </p><p>Background levels of dioxins and furans in sealed samples prior to this era suggest that former sources of these substances existed. </p><p>Salt glazing is a method of adding a smooth acid resistant exterior to stoneware ceramics. The technique has been in use since the 16'Th century, maybe even earlier than that. Some sources date the origin of the technique to the 13'Th century. Salt glazed ceramics were the prime type of industrial vessels and it was extensively used for food preservation in households from the 17'Th century to the early/mid 20'Th century. </p><p>The method was/is primarily used by Germany, Great Britain, America and Sweden.</p><p>Salt glazing is a source of graphite structures from soot, and of chlorine gas. Hence, the formation of organochlorides should be able to occur.</p><p>The reports main objective is to highlight the question; “Could the salt glazing industry be one of the sources to early dioxin emissions?” Secondary objectives are to present an introduction to dioxin and comparable substances, methods of analysis and symptoms of exposure. </p><p>The salt glazing industry is much likely one of the anthropogenic sources of early PCDD/F emissions. Though emission levels seem to be quite low, due to the persistence of PCDD/F noticeable levels could have accumulated. When the Leblanc soda process (a known source of PCDD/F) was introduced in 1791, the salt glazing process had already been used for nearly three hundred years.</p>

<p>Coordination compounds of europium and titanium with oxide, ethoxide (OCH₂CH₃), <em>iso</em>-propoxide (OCH(CH₃)₂) and <em>tert</em>-butoxide (OC(CH₃)₃) ligands have been studied. These belong to the general class of oxo-alkoxides, M<em>_x</em>O<em>_y</em>(OR)<em>_z</em>, with alkoxide ligands (OR) containing an organic, aliphatic part R. The R group can be systematically varied, permitting the investigation of the influence of electronic and steric effects on the coordination of metal and oxygen atoms. Their tendency towards hydrolysis and formation of metal-oxygen-metal bridges also makes (oxo)alkoxides interesting as precursors in liquid solution-based or gas phase-based synthesis of many technologically important materials.</p><p>The structure of a termetallic oxo-alkoxide of formula Eu₃K₃TiO₂(OH/OCH₃)(OR)₁₁(HOR) (R = C(CH₃)₃) was revealed by a combination of single-crystal X-ray diffraction and IR spectroscopy. Its unusual structure features a facial oxygen-centered Eu₃K₃O octahedron sharing one face with an oxygen-centered K₃TiO tetrahedron. Six-coordination of oxygen by a combination of alkali metal and lanthanoid atoms is not uncommon for alkoxides, but the attachment of a tetrahedron to one of its faces provides a new dimension to the library of oxo-alkoxide structures. The structure was the result of incomplete metathesis in the synthesis attempt of europium-titanium oxo-<em>tert</em>-butoxides.</p><p>Eu₄TiO(OR)₁₄ and (Eu_0.5La_0.5)₄TiO(OR)₁₄ (R = CH(CH₃)₂) were found to be isostructural with previously published Ln₄TiO(OR)₁₄ structures (Ln=Sm, Tb_0.9Er_0.1). X-ray diffraction and UV-Vis absorption results show no site preference for La in either the solid state or hexane solution. The Ln₄TiO(OR)₁₄ structure forms part of an interesting group of Ln₄MO(OR)_{10+<em>z</em>}<em>­</em>(HOR)<em>_q</em> structures where M is another lanthanoid (Ln) or a di-, tri- or tetravalent heteroatom, giving either a square pyramidal or a trigonal bipyramid-like coordination of the central oxygen atom, depending on the chemistry and size of M.</p><p>Eu₂Ti₄O₂(OR)₁₈(HOR)₂ (R = CH₂CH₃) was deduced from IR data to have the same molecular structure as Er₂Ti₄O₂(OR)₁₈(HOR)₂. UV-Vis measurements are also in agreement with the presence of one symmetry-unique europium site in the molecular structure. Structure determination by single-crystal X-ray diffraction has yet to be performed.</p><p> </p><p>Coordination compounds of europium and titanium with oxide, ethoxide (OCH2CH3), isopropoxide(OCH(CH3)2) and tert-butoxide (OC(CH3)3) ligands have been studied. Thesebelong to the general class of oxo-alkoxides, MxOy(OR)z, with alkoxide ligands (OR)containing an organic, aliphatic part R. The R group can be systematically varied, permittingthe investigation of the influence of electronic and steric effects on the coordination of metaland oxygen atoms. Their tendency towards hydrolysis and formation of metal-oxygen-metalbridges also makes (oxo)alkoxides interesting as precursors in liquid solution-based or gasphase-based synthesis of many technologically important materials.The structure of a termetallic oxo-alkoxide of formula Eu3K3TiO2(OH/OCH3)(OR)11(HOR)(R = C(CH3)3) was revealed by a combination of single-crystal X-ray diffraction and IRspectroscopy. Its unusual structure features a facial oxygen-centered Eu3K3O octahedronsharing one face with an oxygen-centered K3TiO tetrahedron. Six-coordination of oxygen bya combination of alkali metal and lanthanoid atoms is not uncommon for alkoxides, but theattachment of a tetrahedron to one of its faces provides a new dimension to the library of oxoalkoxidestructures. The structure was the result of incomplete metathesis in the synthesisattempt of europium-titanium oxo-tert-butoxides.Eu4TiO(OR)14 and (Eu0.5La0.5)4TiO(OR)14 (R = CH(CH3)2) were found to be isostructuralwith previously published Ln4TiO(OR)14 structures (Ln=Sm, Tb0.9Er0.1). X-ray diffraction andUV-Vis absorption results show no site preference for La in either the solid state or hexanesolution. The Ln4TiO(OR)14 structure forms part of an interesting group of Ln4MO(OR)10+z-(HOR)q structures where M is another lanthanoid (Ln) or a di-, tri- or tetravalent heteroatom,giving either a square pyramidal or a trigonal bipyramid-like coordination of the centraloxygen atom, depending on the chemistry and size of M.Eu2Ti4O2(OR)18(HOR)2 (R = CH2CH3) was deduced from IR data to have the samemolecular structure as Er2Ti4O2(OR)18(HOR)2. UV-Vis measurements are also in agreementwith the presence of one symmetry-unique europium site in the molecular structure. Structuredetermination by single-crystal X-ray diffraction has yet to be performed.</p>

Coordination compounds of europium and titanium with oxide, ethoxide (OCH2CH3), iso-propoxide (OCH(CH3)2) and tert-butoxide (OC(CH3)3) ligands have been studied. These belong to the general class of oxo-alkoxides, MxOy(OR)z, with alkoxide ligands (OR) containing an organic, aliphatic part R. The R group can be systematically varied, permitting the investigation of the influence of electronic and steric effects on the coordination of metal and oxygen atoms. Their tendency towards hydrolysis and formation of metal-oxygen-metal bridges also makes (oxo)alkoxides interesting as precursors in liquid solution-based or gas phase-based synthesis of many technologically important materials. The structure of a termetallic oxo-alkoxide of formula Eu3K3TiO2(OH/OCH3)(OR)11(HOR) (R = C(CH3)3) was revealed by a combination of single-crystal X-ray diffraction and IR spectroscopy. Its unusual structure features a facial oxygen-centered Eu3K3O octahedron sharing one face with an oxygen-centered K3TiO tetrahedron. Six-coordination of oxygen by a combination of alkali metal and lanthanoid atoms is not uncommon for alkoxides, but the attachment of a tetrahedron to one of its faces provides a new dimension to the library of oxo-alkoxide structures. The structure was the result of incomplete metathesis in the synthesis attempt of europium-titanium oxo-tert-butoxides. Eu4TiO(OR)14 and (Eu0.5La0.5)4TiO(OR)14 (R = CH(CH3)2) were found to be isostructural with previously published Ln4TiO(OR)14 structures (Ln=Sm, Tb0.9Er0.1). X-ray diffraction and UV-Vis absorption results show no site preference for La in either the solid state or hexane solution. The Ln4TiO(OR)14 structure forms part of an interesting group of Ln4MO(OR)10+z­(HOR)q structures where M is another lanthanoid (Ln) or a di-, tri- or tetravalent heteroatom, giving either a square pyramidal or a trigonal bipyramid-like coordination of the central oxygen atom, depending on the chemistry and size of M. Eu2Ti4O2(OR)18(HOR)2 (R = CH2CH3) was deduced from IR data to have the same molecular structure as Er2Ti4O2(OR)18(HOR)2. UV-Vis measurements are also in agreement with the presence of one symmetry-unique europium site in the molecular structure. Structure determination by single-crystal X-ray diffraction has yet to be performed.   Coordination compounds of europium and titanium with oxide, ethoxide (OCH2CH3), isopropoxide(OCH(CH3)2) and tert-butoxide (OC(CH3)3) ligands have been studied. Thesebelong to the general class of oxo-alkoxides, MxOy(OR)z, with alkoxide ligands (OR)containing an organic, aliphatic part R. The R group can be systematically varied, permittingthe investigation of the influence of electronic and steric effects on the coordination of metaland oxygen atoms. Their tendency towards hydrolysis and formation of metal-oxygen-metalbridges also makes (oxo)alkoxides interesting as precursors in liquid solution-based or gasphase-based synthesis of many technologically important materials.The structure of a termetallic oxo-alkoxide of formula Eu3K3TiO2(OH/OCH3)(OR)11(HOR)(R = C(CH3)3) was revealed by a combination of single-crystal X-ray diffraction and IRspectroscopy. Its unusual structure features a facial oxygen-centered Eu3K3O octahedronsharing one face with an oxygen-centered K3TiO tetrahedron. Six-coordination of oxygen bya combination of alkali metal and lanthanoid atoms is not uncommon for alkoxides, but theattachment of a tetrahedron to one of its faces provides a new dimension to the library of oxoalkoxidestructures. The structure was the result of incomplete metathesis in the synthesisattempt of europium-titanium oxo-tert-butoxides.Eu4TiO(OR)14 and (Eu0.5La0.5)4TiO(OR)14 (R = CH(CH3)2) were found to be isostructuralwith previously published Ln4TiO(OR)14 structures (Ln=Sm, Tb0.9Er0.1). X-ray diffraction andUV-Vis absorption results show no site preference for La in either the solid state or hexanesolution. The Ln4TiO(OR)14 structure forms part of an interesting group of Ln4MO(OR)10+z-(HOR)q structures where M is another lanthanoid (Ln) or a di-, tri- or tetravalent heteroatom,giving either a square pyramidal or a trigonal bipyramid-like coordination of the centraloxygen atom, depending on the chemistry and size of M.Eu2Ti4O2(OR)18(HOR)2 (R = CH2CH3) was deduced from IR data to have the samemolecular structure as Er2Ti4O2(OR)18(HOR)2. UV-Vis measurements are also in agreementwith the presence of one symmetry-unique europium site in the molecular structure. Structuredetermination by single-crystal X-ray diffraction has yet to be performed.

Abstract. The levels of dioxin and comparable substances rose to a large extent in our environment during the second half of the 20'Th century. This was the result of the synthesis of, and careless usage of these substances in cooling fluids, hydraulics, pesticides etc. Background levels of dioxins and furans in sealed samples prior to this era suggest that former sources of these substances existed. Salt glazing is a method of adding a smooth acid resistant exterior to stoneware ceramics. The technique has been in use since the 16'Th century, maybe even earlier than that. Some sources date the origin of the technique to the 13'Th century. Salt glazed ceramics were the prime type of industrial vessels and it was extensively used for food preservation in households from the 17'Th century to the early/mid 20'Th century. The method was/is primarily used by Germany, Great Britain, America and Sweden. Salt glazing is a source of graphite structures from soot, and of chlorine gas. Hence, the formation of organochlorides should be able to occur. The reports main objective is to highlight the question; “Could the salt glazing industry be one of the sources to early dioxin emissions?” Secondary objectives are to present an introduction to dioxin and comparable substances, methods of analysis and symptoms of exposure. The salt glazing industry is much likely one of the anthropogenic sources of early PCDD/F emissions. Though emission levels seem to be quite low, due to the persistence of PCDD/F noticeable levels could have accumulated. When the Leblanc soda process (a known source of PCDD/F) was introduced in 1791, the salt glazing process had already been used for nearly three hundred years.

Bakgrund: Inom forskningen studeras styrkeförhållandet i lårets muskler och anges ofta som flexor/extensor kvot (F/E-kvot). Ett sätt att mäta denna kvot är att använda isokinetiska styrketest.  Forskningen är inte överens om ett optimalt styrkeförhållande i denna muskulatur eller om för stor styrkeskillnad kan ge upphov till skada. Om en optimal kvot kan fastställas är det intressant i ett förebyggande och rehabiliterande syfte.  Syfte: Att beskriva och jämföra F/E-kvoten hos en grupp manliga fotbollsspelare med en grupp fysiskt aktiva män mellan 16 och 25 år. Metod: Mätning av maximal isokinetisk styrka i knäledens flexor och extensormuskler genomfördes med Genesis Single. Resultat: Studien fann en F/E-kvot hos fotbollsspelarna på 78,2 % på höger ben och 77 % på vänster ben. Jämförelsegruppen hade en F/E-kvot på 73,7 % på höger ben och76,4 % på vänster ben. Utifrån detta kunde man inte finna någon signifikant skillnad mellan de båda grupperna Slutsats: Studien fann ingen signifikant skillnad i F/E-kvot i höger respektive vänster ben mellan en grupp fotbollsspelare och jämförelsegrupp. Vidare forskning om reliabilitet och validitet med Genesis Single som mätinstrument bör utföras innan fler studier utförs med maskinen. / Background: The kneeflexor and kneextensor muscle strength ratio (F/E ratio) is a widely researched area where isokinetic tests are often used. There seems to be little consensus regarding the optimal ratio and also whether a low ratio increase the risk of injury. It would be interesting from a preventive and rehabilitative stand point if an optimal ratio could be decided upon.  Objectives: To compare the F/E ratio between a group of 16-25 year old soccer players and a group of physically active males. Methods: Isokinetic maximal strength in kneeflexors and kneextensors were measured with Genesis Single. Results: The ratio of the soccer players was 78,2 % in the right leg and 77 % in the left. The comparison group was found to have a ratio of 73,7 % in the right leg and 76,4 % in the left leg. There were no significant differences between the two groups. Conclusions: No significant differences could be determined between the two groups. Genesis Single needs to be further investigated with regards to its reliability and validity.

This thesis presents the analysis, design, and fabrication of a spherical inverted-F antenna (SIFA). The SIFA consists of a spherically conformal rectangular patch antenna recessed into a quarter section of a metallic sphere. The sphere acts as a ground plane, and a metal strip shorts the patch to the metallic sphere. The SIFA incorporates planar microstrip design into a conformal spherical geometry to better meet the design constraints for integrated wireless sensors. The SIFA extends a well-established technology into a new application space, including microsatellites, mobile sensor networks, and wireless biomedical implants. The complete SIFA design depends on several parameters, several of which parallel planar design variables. A modified transmission line model determines the antenna input impedance based on the sphere's inner and outer radii, the patch length and width, short length and width, and feed position. The SIFA can be tuned to the desired frequency band by choosing the proper outer radius, after which the antenna can be matched by tuning the short characteristics, patch dimensions, and feed position. The fabricated design was chosen to operate at the MICS band (402-405 MHz), a popular band for biomedically implanted devices. An initial design was constructed with Styrofoam (epsilon r approximately equal to 1) and copper tape. Simulation in HFSS corroborates that SIFA operation incorporates the MICS band, with resonant frequency of 404 MHz and 32 MHz (7.9%) bandwidth. The fabricated prototype performs similarly, with a resonant frequency of 407 MHz and 19 (4.7%) MHz bandwidth. Following fabrication, several modifications were implemented to miniaturize the SIFA and introduce additional functionality. Slot loading and dielectric coating were implemented to achieve SIFA miniaturization. Multiple elements were also introduced to achieve dual band operation and beam steering. A miniaturized SIFA was investigated in several biological media, and a lossy coating implemented to maintain impedance match in several different media, with the goal of retaining a matched impedance bandwidth in the MICS band.