Measurement limitations in knife-edge tomographic phase retrieval of focused IR laser beams

An experimental setup to measure the three-dimensional phase-intensity distribution of an infrared laser beam in the focal region has been presented. It is based on the knife-edge method to perform a tomographic reconstruction and on a transport of intensity equation-based numerical method to obtain the propagating wavefront. This experimental approach allows us to characterize a focalized laser beam when the use of image or interferometer arrangements is not possible. Thus, we have recovered intensity and phase of an aberrated beam dominated by astigmatism. The phase evolution is fully consistent with that of the beam intensity along the optical axis. Moreover, this method is based on an expansion on both the irradiance and the phase information in a series of Zernike polynomials. We have described guidelines to choose a proper set of these polynomials depending on the experimental conditions and showed that, by abiding these criteria, numerical errors can be reduced.

Radiocirugía hipofisaria con gamma knife en perros con hiperadrenocorticismo hipofisario

El hiperadrenocorticismo (HAC) es una de las endocrinopatías más frecuentes en la especie canina, con una incidencia aproximada de 1-2/1000 perros/año. En el 80-85% de los casos el origen se encuentra en un exceso de secreción de hormona adrenocorticotropa (ACTH) provocado por un tumor hipofisario, denominándose HAC hipofisario. En el 15-20% restante el origen del HAC es un tumor (adenoma o carcinoma) adrenocortical que secreta una cantidad excesiva de glucocorticoides, denominándose HAC adrenal, y en un escaso porcentaje de casos, la etiología se sitúa ectópicamente a ambas glándulas. En la revisión bibliográfica de esta Tesis Doctoral se proporciona una visión general de la anatomía hipofisaria en la especie canina, de la regulación y de la síntesis de las hormonas hipofisarias y adrenales que intervienen en el desarrollo del HAC. Se describen los síntomas y signos clínicos de la enfermedad, los métodos de diagnóstico y las opciones terapéuticas farmacológica, quirúrgica y radioterápica...

Professional roller derby

General note: Title and date provided by Bettye Lane.

Ann Phillips, the only woman on the NY Nationals Roller Hockey team

General note: Title and date provided by Bettye Lane.

Professional roller derby

General note: Title and date provided by Bettye Lane.

Ann Phillips, the only woman on the NY National Roller Hockey team

General note: Title and date provided by Bettye Lane.

Members of the "Red Devils" roller derby team at Madison Square Garden

General note: Title and date provided by Bettye Lane.

Professional roller derby

General note: Title and date provided by Bettye Lane.

Ann Phillips, the only woman on the NY Nationals Roller Hockey team

General note: Title and date provided by Bettye Lane.

Professional roller derby

General note: Title and date provided by Bettye Lane.

Professional roller derby player for the Red Devils, #14 Francine Cerker

General note: Title and date provided by Bettye Lane.

Roller derby at Madison Square Garden

General note: Title and date provided by Bettye Lane.

Teenagers roller skating

Inscriptions: Verso: [stamped] Credit must be given to Freda Leinwand from Monkmeyer Press Photo Service.

Sex, normer, roller och ideal : En komparativ textanalys om mäns och kvinnors sexualitet inom islam

Denna studie har haft som syfte att undersöka hur mäns och kvinnors roller, sexualitet och ideal inom en muslimsk kontext ser ut. Detta gjordes genom en analys av tre olika böcker, vilka hade tre olika perspektiv och var producerade under tre olika tidsperioder. Böckerna var Den doftande trädgården från år 1966, vilket var det orientalistiska perspektivet, The muslim marriage guide från år 1995, vilket var det neo-traditionella perspektivet samt Sexual Ethics and Islam från år 2006, vilket var det feministiska perspektivet. För att kunna undersöka dessa böcker analyserades dem utifrån verktyg från lingvistisk och visuell textanalys samt kategoriserades och komparerades. Resultatet blev att böckerna både hade likheter och skillnader gällande mäns och kvinnors roller, sexualitet och ideal. Kvinnor framställdes genom feminina egenskaper som omsorgsfull, hemmafru, vacker och sexuell tillgänglighet, medan män framställdes genom maskulina egenskaper som ledare, styrka, ansvarsfull och sexuell skicklighet. Män kunde också oftare ses som önskvärda deltagare och utföra fler handlingar än kvinnor. I vissa delar av materialet förekom även orientalistiska framställningar.

Effects of roller massager on muscle performance, morphology, and oxygenation after exercise-induced muscle damage

This study determined roller massager (RM) effectiveness on ankle plantar flexors’ recovery after exercise-induced muscle damage (EIMD) stimulus. Two experiments were conducted. The first experiment (n=10) examined functional [i.e., ankle plantar flexion maximal voluntary isometric contraction (MVIC) and submaximal (30% of MVIC) sustained force; ankle dorsiflexion maximal range of motion and resistance to stretch; and pain pressure threshold] and morphological [medial gastrocnemius (MG) cross sectional area, thickness, fascicle length, and fascicle angle] variables, before and immediately, 1h, 24h, 48h, and 72 after EIMD. In the second experiment (n=10), changes in MG deoxyhemoglobin concentration kinetics (velocity and amplitude) during a submaximal sustained force test were observed before and 48h after EIMD. Participants performed both experiments twice, with and without (NRM) the application of a RM (6 × 45 seconds with 20 seconds rest between sets). RM intervention did not alter plantar flexors’ strength and flexibility impairment after EIMD, as well the MG morphology and oxygenation kinetics (p>0.05). On the other hand, a strong tendency for an acute (within 1 hour) change of ipsilateral (post-effects: RM=+19%, NRM=-5%, p=0.032) and contralateral (p=0.095) MG pain pressure threshold was observed. In conclusion, the present results suggest that a roller massager has no effect on muscular performance, morphology, and oxygenation recovery after EIMD, except for muscle pain pressure threshold (i.e., a soreness). Thus, RM may have potential application in recovery for people with increased muscle soreness, if performed immediately before a physical task.