2,538 research outputs found
Kinesiophobia in migraine
Pain aggravation by movement and avoidance of movement (kinesiophobia) is often reported by patients during migraine attacks. Yet its specific contribution to migraine diagnosis is undetermined. To characterize the frequency and severity of kinesiophobia during migraine and its role in the diagnosis of primary headaches, we questioned 150 patients (126 women and 24 men, average age 38.5 yrs) with migraine (n = 111) or tension-type headache (TTH) (n = 39) about aggravation of pain by bending forward, brisk head movements (jolt), and avoidance of movement during the attacks. The degree of pain worsening by each stimulus was measured through a visual analog scale and compared to worsening produced by other sensory stimuli such as light, sound, and smell. The discrimination power of kinesiophobia between migraine and TTH was calculated, using the International Classification of Headache Disorders criteria as gold standard. Sensitivity/specificity of studied symptoms was high in differentiating the 2 headache types: bending forward: 98%/85.7%; jolt: 96.3%/81.6%; and immobility during the attacks: 100%/70%. The degree of kinesiophobia was identical to photo- and phonophobia in migraine patients. We conclude that kinesiophobia discriminates between migraine and TTH. Bending forward and jolt may be useful additional questions to ask patients for the differentiation of headache attacks. PERSPECTIVE: This article evaluates the specific role of movement (movement-induced pain aggravation and avoidance of movement) in primary headaches. Kinesophobia is an easy symptom to screen, explained by migraine pathophysiology, and proved to be a sensitive and specific measure to identify migraine attacks when compared to tension-type headache
Mathematical retroreflectors
Retroreflectors are optical devices that reverse the direction of incident
beams of light. Here we present a collection of billiard type retroreflectors
consisting of four objects; three of them are asymptotically perfect
retroreflectors, and the fourth one is a retroreflector which is very close to
perfect. Three objects of the collection have recently been discovered and
published or submitted for publication. The fourth object - notched angle - is
a new one; a proof of its retroreflectivity is given.Comment: 32 pages, 19 figure
Primary Effusion Lymphoma in a HIV Infected Patient
O linfoma primário das cavidades é um subtipo de linfoma não-Hodgkin (LNH), de ocorrência rara, prognóstico muito reservado,
mais frequentemente descrito em indivíduos imunodeprimidos, em particular no contexto de infecção pelo vírus da imunodeficiência
humana (VIH), no qual as células malignas proliferam exclusivamente nas cavidades serosas e que está associado ao vírus herpes humano tipo 8 (VHH8).
Os autores apresentam o caso de um doente com infecção VIH, internado por febre e queixas constitucionais e que desenvolveu,
enquanto decorria estudo etiológico da síndrome febril, ascite volumosa e, ainda, derrame pleural direito e derrame pericárdico.
O líquido ascítico mostrou a presença de células grandes linfóides com fenótipo não B e não T. Não foram evidenciadas massas
tumorais, linfadenopatias ou envolvimento da medula óssea.
O doente morreu 41 dias após o diagnóstico, sem ter iniciado quimioterapia. Ainda que não tenha sido possível a demonstração
de infecção pelo VHH-8 nas células linfóides, os dados clínicos, citológicos e imunofenotípicos apontam para um diagnóstico
altamente provável de linfoma primário das cavidades
COVID-19 Infection Triggered Juvenile Systemic Lupus Erythematosus-Like Disease
info:eu-repo/semantics/publishedVersio
Ecophysiological potential of the Dão terroir for the production of Touriga Nacional red grapes
Proceedings - IX International Terroir Congress, 2012Aiming to evaluate the potential of the portuguese Dão winegrowing region for the production of Touriga Nacional
(TN) red grapes, climatic, ecophysiological and viticultural data from two different climatic years (2004, wet year and
2005, dry year) are presented and discussed. The data was collected in the control non-irrigated plants of an irrigation
experiment installed at the Dão Research Station, Nelas, Portugal. The vineyard is established in a typical granitic soil
and trained on a vertical shoot positioning. According to the Géoviticulture Multicriteria Climatic Classification
System, the Dão region is classified as temperate/temperate warm for the heliothermal index, with cool nights (night
cold index) and moderately dry (dryness index). In 2004 the predawn leaf water potential presented always values
higher than -0.2 MPa from flowering to harvest but in 2005 moderate to severe water stress was observed during the
ripening period (-0.4 MPa at veraison to -0.6 MPa at harvest). Leaf stomatal conductance and photosynthetic rate
displayed a decreasing pattern from flowering to harvest in both years but attained much lower values in the 2005
ripening period as compared to that of 2004. The yield was similar in both years but 2005 showed lower sugar content,
similar titratable acidity and a higher anthocyanin berry skin content. Our data shows that the Dão terroir presents a
high inter-annual climate variability which has important repercussions on TN responses being the most unfavorable
climatic years those were the high temperatures are coincident with water stress during the first half of the ripening
period. In those years irrigation should be applied in order to obtain better quality grapes
Asymmetric core combustion in neutron stars and a potential mechanism for gamma ray bursts
We study the transition of nuclear matter to strange quark matter (SQM)
inside neutron stars (NSs). It is shown that the influence of the magnetic
field expected to be present in NS interiors has a dramatic effect on the
propagation of a laminar deflagration (widely studied so far), generating a
strong acceleration of the flame in the polar direction. This results in a
strong asymmetry in the geometry of the just formed core of hot SQM which
resembles a cylinder orientated in the direction of the magnetic poles of the
NS. This geometrical asymmetry gives rise to a bipolar emission of the thermal
neutrino-antineutrino pairs produced in the process of SQM formation. The
neutrino-antineutrino pairs annihilate into electron-positron pairs just above
the polar caps of the NS giving rise to a relativistic fireball, thus providing
a suitable form of energy transport and conversion to gamma emission that may
be associated to short gamma ray bursts (GRBs).Comment: 2 figure
Improving the Cut Surface Quality by Optimizing Parameters in the Fibre Laser Cutting Process
One of the main problems with laser cutting equipment is related to the wrong setting of cutting parameters. The mismatching of these parameters leads to a loss of cut surface quality, which is hardly re-established. This loss of quality is usually related to a burr problem. Thus, this study is aimed to improve and optimize this process using a fibre laser equipment. Three important laser cutting parameters were studied in order to investigate their importance in the cut surface quality: radiation power, cutting speed and gas pressure. The different values were performed cutting a stainless steel AISI 316L and a cold rolled steel St12. Metallographic and cut surface analysis, burr and roughness measurements were carried out, supported by a Scanning Electron Microscopy and profilometry. Through the Taguchi statistical analysis model, it is possible to indicate the best set of laser cutting parameters. It was verified that the values recommended by the equipment manufacturer can be optimized, being possible to use less radiation power in the laser beam with greater speed of cut, providing a better cut surface quality, improving and optimizing the entire process.info:eu-repo/semantics/publishedVersio
Identificação e flutuação populacional de Crisopideos (Neuroptera, Chrysopidae) associados à cultura orgânica de Crotolaria juncea (Leguminosae).
- …