87 research outputs found
Umbilical Cutaneous Endometriosis: Case Report
PA endometriose caracteriza-se pela presença de implante ectĂłpico de tecido endometrial, normalmente funcionante e hormono-sensĂvel. O acometimento extrapĂ©lvico pode ocorrer em cerca de 12% das mulheres com a afecção. Endometriose umbilical foi relatada como representando cerca de 0,4% a 4,0% de todas as endometrioses e 30% a 40% dos casos de endometriose cutânea. Trata-se de um caso raro de uma doença que apresenta diagnĂłsticos diferenciais importantes com outras afecções papulonodulares umbilicais, que podem ser primárias ou secundárias, neoplásicas ou inflamatĂłrias. Relata-se o caso de uma paciente sem comorbidades, com diagnĂłstico de Endometriose cutânea umbilical, baseado na anamnese, exame clĂnico e histopatolĂłgico, que apresentou boa evolução apĂłs a exĂ©rese completa da lesĂŁo. O diagnĂłstico definitivo Ă© histopatolĂłgico, mas pode ser complementado pela imunohistoquĂmica assim como a ultrassonografia, tomografia computorizada e ressonância magnĂ©tica de abdĂłmen. A excisĂŁo cirĂşrgica Ă© a terapĂŞutica de eleição.Endometriosis is characterized by the presence of ectopic implantation of endometrial tissue, normally functioning and hormone-sensitive. Extrapelvic involvement can occur in about 12% of women with the condition. Umbilical endometriosis has been reported to account for about 0.4% to 4.0% of all endometriosis and 30% to 40% of cases of cutaneous endometriosis. It is a rare case of a disease that presents important differential diagnosis with other umbilical papular disorders, which may be primary or secondary, neoplasic or inflammatory. This paper reports the case of a patient with no comorbidities, with a diagnosis of umbilical cutaneous endometriosis, based on anamnesis, clinical and histopathological examination, showing a good evolution after complete excision of the lesion. The definitive diagnosis is based on histopathology, but immunohistochemistry may be helpful as well as abdomen ultrasound, computed tomography and magnetic resonance imaging. Surgical management is the preferred treatment
A shared frequency set between the historical mid-latitude aurora records and the global surface temperature
Herein we show that the historical records of mid-latitude auroras from 1700
to 1966 present oscillations with periods of about 9, 10-11, 20-21, 30 and 60
years. The same frequencies are found in proxy and instrumental global surface
temperature records since 1650 and 1850, respectively and in several planetary
and solar records. Thus, the aurora records reveal a physical link between
climate change and astronomical oscillations. Likely, there exists a modulation
of the cosmic ray flux reaching the Earth and/or of the electric properties of
the ionosphere. The latter, in turn, have the potentiality of modulating the
global cloud cover that ultimately drives the climate oscillations through
albedo oscillations. In particular, a quasi 60-year large cycle is quite
evident since 1650 in all climate and astronomical records herein studied,
which also include an historical record of meteorite fall in China from 619 to
1943. These findings support the thesis that climate oscillations have an
astronomical origin. We show that a harmonic constituent model based on the
major astronomical frequencies revealed in the aurora records is able to
forecast with a reasonable accuracy the decadal and multidecadal temperature
oscillations from 1950 to 2010 using the temperature data before 1950, and vice
versa. The existence of a natural 60-year modulation of the global surface
temperature induced by astronomical mechanisms, by alone, would imply that at
least 60-70% of the warming observed since 1970 has been naturally induced.
Moreover, the climate may stay approximately stable during the next decades
because the 60-year cycle has entered in its cooling phase.Comment: 18 pages, 11 figure
An interplanetary shock traced by planetary auroral storms from the Sun to Saturn
A relationship between solar activity and aurorae on Earth was postulated(1,2) long before space probes directly detected plasma propagating outwards from the Sun(3). Violent solar eruption events trigger interplanetary shocks(4) that compress Earth's magnetosphere, leading to increased energetic particle precipitation into the ionosphere and subsequent auroral storms(5,6). Monitoring shocks is now part of the 'Space Weather' forecast programme aimed at predicting solar-activity-related environmental hazards. The outer planets also experience aurorae, and here we report the discovery of a strong transient polar emission on Saturn, tentatively attributed to the passage of an interplanetary shock - and ultimately to a series of solar coronal mass ejection (CME) events. We could trace the shock-triggered events from Earth, where auroral storms were recorded, to Jupiter, where the auroral activity was strongly enhanced, and to Saturn, where it activated the unusual polar source. This establishes that shocks retain their properties and their ability to trigger planetary auroral activity thoughout the Solar System. Our results also reveal differences in the planetary auroral responses on the passing shock, especially in their latitudinal and local time dependences.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/62930/1/nature02986.pd
Lettre de de Mairan ... à Madame *** sur la question des forces vives, en réponse aux objections qu'elle lui fait sur ce sujet dans ses Institutions de Physique
Name der Briefempfängerin: Gabrielle Emilie Le Tonnelier de Breteuil marquise Du Châtele
Traité physique et historique de l'aurore boréale
[Enthält u.a.: pp. 299-570] : Eclaircissemens sur le Traité physique et historique de l'Aurore BoréaleMr. Jean Jacques Dortous de MairanTitelvignetteSupralibros 000331302_0001 Exemplar der ETH-BIBHandschriftliches Geschenkexlibris: "Pour Monsieur l'Abbé Pluquet, de la part de son très humble serviteur D'Ortous de Mairan" 000331302_0002 Exemplar der ETH-BI
Dissertation sur la glace, ou explication physique de la formation de la glace, & de ses divers phénomènes
par ... Dortous de Mairan ..
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