Search results for "spin"
showing 10 items of 5044 documents
Keskivartalon lihasten harjoittaminen SpineGym -laitteella : vaikutukset lihasvoimaan ja EMG -aktiivisuuteen
2016
Keskivartalon lihaksilla on tärkeä merkitys jokapäiväisessä elämässä kehon tukijana ja tasapainon säilyttäjänä. Keskivartalon lihasten harjoittamisen tärkeys korostuu selkävaivaisilla ja tasapainohäiriöistä kärsivillä henkilöillä, joilla lihasten heikkous on jo aiheuttanut ongelmia. Heillä lihasten harjoittaminen voi olla heikkoudesta aiheutuneiden rajoitteiden vuoksi vaikeampaa. SpineGym –laitteella lihaksia voidaan harjoittaa pystyasennossa eli seisten, niiden luonnollisessa käyttöasennossa, ja pienillä liikeradoilla, jolloin harjoittelu on helpompaa myös erilaisista selkävaivoista kärsiville. Tutkimuksessa selvitettiin, miten kahden viikon SpineGym –harjoittelu vaikuttaa keskivartalon li…
Influence of nerve growth factor in endometriosis-associated symptoms
2011
To investigate the role of the nerve growth factor (NGF) in the development of dysmenorrhea/pelvic pain in patients with endometriosis, we performed a prospective, clinical, blind study. Peritoneal fluids (PFs) were obtained from patients with histologically proven endometriosis. Patients with endometriosis were divided into 7 different groups depending on their preoperative pain score and symptomatology: patients with no pain, patients with minimal pain (dysmenorrhea, pelvic pain, or both), and patients with severe pain (dysmenorrhea, pelvic pain, or both) and were used for the neuronal growth assay with cultured chicken dorsal root ganglia (DRG) and for Western blot analyses. Dorsal root …
Endovascular treatment for chronic cerebrospinal venous insufficiency: is the procedure safe?
2010
Objectives The aim of this report is to assess the safety of endovascular treatment for chronic cerebrospinal venous insufficiency (CCSVI). Although balloon angioplasty and stenting seem to be safe procedures, there are currently no data on the treatment of a large group of patients with this vascular pathology. Methods A total of 564 endovascular procedures (balloon angioplasty or, if this procedure failed, stenting) were performed during 344 interventions in 331 CCSVI patients with associated multiple sclerosis. Results Balloon angioplasty alone was performed in 192 cases (55.8%), whereas the stenting of at least one vein was required in the remaining 152 cases (44.2%). There were no majo…
Up-conversion and Photoluminescence in Er3+ Single Crystal MgAl-spinel
2015
Abstract Traditional and up-conversion luminescence of MgAl 2 O 4 single crystal doped with erbium ions obtained by the Verneuil method has been investigated. The time resolved spectral measurements of the green and red up-conversion luminescence bands show that a build-up part is present in the up-conversion luminescence kinetics. This means that energy transfer process is involved in the creation of the luminescence. Considering rather small concentration of Er 3+ in the material (0.12 mass %), the expected up-conversion mechanism should be excited state absorption since the average distance between erbium ions is high. The above-mentioned considerations suggest that clustering of the act…
The incubation process for the creation of viable firms: the case of ARCA Consortium
2015
The aim of this study is to demonstrate that academic incubators play a key role in firm viability. This study develops a new analytic systemic framework that reveals the processes and factors that determine the effectiveness of the incubation process supported by university incubators. We analyse the effectiveness of the incubation process in the incubator of the ARCA Consortium by means of a single case study with an embedded design. In this study, adopting a systemic perspective, we shift the focus from the firm to the context, shedding light on the systemic actions that create the prerequisite conditions for the achievement of the firms’ viability.
No uniform associations between parasite prevalence and environmental nutrients
2014
The resource quality of the host has been shown to affect parasite transmission success, prevalence, and virulence. Seasonal availability of environmental nutrients alters density and stoichiometric quality (carbon–nutrient ratios) of both producers and consumers, suggesting that nutrient availability may drive fluctuations in parasite prevalence patterns observed in nature. We examined the interactions between the population dynamics of a keystone herbivore, Daphnia, and its parasites, and their associations with water nutrient concentrations, resource quantity and quality, and other environmental variables (temperature, pH, oxygen concentration) in a small lake, using general linear model…
Estudio de la afectación medular en la Esclerosis Múltiple. Establecimiento de patrones de lesión en neuroimagen y su relación con la discapacidad.
2015
La Esclerosis Múltiple (EM) es una enfermedad de evolución muy variable sin factores pronósticos de discapacidad claramente definidos. La médula espinal es una localización relevante para el desarrollo de discapacidad física en los pacientes con EM. Por su estructura, es esperable que sea clínicamente elocuente; sin embargo, en la EM es frecuente encontrar afectación medular silente por resonancia magnética (RM), siendo relevante para el diagnóstico de la enfermedad, pero su relación con el desarrollo de la discapacidad no se ha demostrado claramente, lo cual contribuye a la disociación clínico-radiológica de esta enfermedad. La RM es la herramienta diagnóstica más sensible en la EM. El uso…
Optically pumped Cs magnetometers enabling a high-sensitivity search for the neutron electric dipole moment
2020
An array of 16 laser-pumped scalar Cs magnetometers was part of the neutron electric dipole moment (nEDM) experiment taking data at the Paul Scherrer Institute in 2015 and 2016. It was deployed to measure the gradients of the experiment's magnetic field and to monitor their temporal evolution. The originality of the array lies in its compact design, in which a single near-infrared diode laser drives all magnetometers that are located in a high-vacuum chamber, with a selection of the sensors mounted on a high-voltage electrode. We describe details of the Cs sensors' construction and modes of operation, emphasizing the accuracy and sensitivity of the magnetic-field readout. We present two app…
Influencia de la fatiga en la calidad de movimiento de personas con lesión medular
2017
La fatiga es un fenómeno fisiológico complejo por el que se limita la capacidad del individuo para mantener una actividad física concreta (Bigland-Ritchie y Woods, 1984). En individuos sanos el desarrollo de la fatiga está ligado al ejercicio físico siendo la causa principal que limita la duración del mismo. Además, la fatiga aparece como parte de la patología de diferentes enfermedades y su efecto es igualmente limitador de la actividad física. El estudio de un fenómeno tan complejo se ha realizado con distintos abordajes experimentales y en distintos niveles fisiológicos con individuos sanos, lo que ha permitido distinguir tres tipos básicos de fatiga: a) fatiga periférica, producida en e…