Search results for "Natural History"
showing 10 items of 124 documents
Clinical findings of Takotsubo cardiomyopathy: results from a multicenter international study
2008
BACKGROUND: Takotsubo cardiomyopathy consists of reversible systolic left ventricular apical ballooning associated with chest pain. Electrocardiographic abnormalities and the minimal rise of serum cardiac markers are similar to those in acute myocardial infarction, but without evidence of myocardial ischemia or injury. To date, many reports concerning this kind of acute reversible heart failure have been published, but the information available about the management of affected patients is scarce and the clinical data are incomplete. AIMS: In the present study, we report a collection of 40 patients who were affected by Takotsubo cardiomyopathy obtained in a multicentric international study, …
Definition of overactive bladder and epidemiology of urinary incontinence
1998
Abstract Objectives To review the definition of the overactive bladder and to summarize the results of epidemiologic studies on this specific disorder as well as urinary incontinence (UI) in general. Methods From a literature search covering the time period from 1954 through 1995, 48 epidemiologic studies and several other publications dealing with the prevalence and natural history of UI were reviewed. A metaanalysis of reported data was performed with respect to incontinence definitions, investigation methods, home country of survey, sex, and age groups. Results Differences in definitions of incontinence, target populations, and study design in different investigations resulted in inhomog…
ANATOMICAL AND FUNCTIONAL OUTCOMES OF SYMPTOMATIC IDIOPATHIC VITREOMACULAR TRACTION
2016
To describe the natural history of eyes with symptomatic idiopathic vitreomacular traction (VMT).Retrospective multicenter study of 168 eyes with spectral-domain optical coherence tomography (SD-OCT) findings consistent with idiopathic VMT. All eyes were graded according to SD-OCT findings. Grade 1 was defined as incomplete cortical vitreous separation with foveal attachment. Grade 2 was defined as Grade 1 plus intraretinal cysts or clefts. Grade 3 was defined as Grade 2 plus a foveal detachment. All patients were followed for at least 6 months.There were 168 patients (51 men) with a mean age of 68.8 ± 10.7 years. Patients were followed for a mean of 22.7 ± 20.1 months. The mean duration of…
Underutilized resources for studying the evolution of invasive species during their introduction, establishment, and lag phases
2010
The early phases of biological invasions are poorly understood. In particular, during the introduction, establishment, and possible lag phases, it is unclear to what extent evolution must take place for an introduced species to transition from established to expanding. In this study, we highlight three disparate data sources that can provide insights into evolutionary processes associated with invasion success: biological control organisms, horticultural introductions, and natural history collections. All three data sources potentially provide introduction dates, information about source populations, and genetic and morphological samples at different time points along the invasion trajector…
The Alloxysta (Hymenoptera: Figitidae: Charipinae) type material in the United States National Museum of Natural History and the Canadian National Co…
2013
AbstractAlloxysta Förster, 1869 (Hymenoptera: Figitidae) type material of 19 nominal species deposited in the Canadian National Collection of Insects (Ottawa, Ontario, Canada) and the United States National Museum of Natural History (Washington, District of Columbia, United States of America) were studied. Nine species are treated as valid: A. australiae (Ashmead, 1900), A. commensuratus Andrews, 1978, A. japonicus (Ashmead, 1904), A. lachni (Ashmead, 1885), A. longiventris Baker, 1896, A. minuscula Andrews, 1978, A. nothofagi Andrews, 1976, A. vandenboschi Andrews, 1978, and A. xanthopsis (Ashmead, 1896). The following synonymies are established: A. affinis (Baker, 1896) and A. quebeci And…
A new species of the genus Cyclopelta (Hemiptera: Dinidoridae) from Thailand, with a key to its Oriental species
2013
Cyclopelta gibbosasp. nov., a new species of dinidorid bug is described from Thailand and compared with Cyclopelta obscura. It is the ninth Oriental species of the genus, and the fourth known species from Thailand. A key to all the Oriental species of the genus Cyclopelta is also provided. The type specimens are deposited with the Smithsonian National Museum of Natural History, Washington, USA, and the Department of Biosystematics, Opole University, Poland.
De la terra a la mar i de la mar a la terra. Homenatge a Antonio Rodríguez-Perea. Monografies de la Societat d’Història Natural de les Balears, n. 34.
2021
[cat] La desembocadura del riu Millars-rambla de la Viuda, conformada per tres braços, forma part d’un gran ventall al·luvial progradant, creat conjuntament pels dos rius al llarg del quaternari. En el present treball s’estudia l’evolució del front del ventall, a partir de nombroses fotografies i ortofotografies aèries preses entre 1956 i 2021. Per aconseguir aquest objectiu s’analitzen les sèries temporals de cabals i d’onatge, amb la finalitat d’esbrinar el paper que hi tenen les revingudes i els temporals marítims. En les dècades de 1960 i 1970 s’observa un fort retrocés de la línia de costa respecte de la de 1956, que no se recuperarà fins al 2020. L’escassa progradació del ve…
Los ejemplares tipo de las colecciones malacológicas del Museu de Ciències Naturals de Barcelona y del Museu Valencià d'Història Natural
2008
Publicar catàlegs d'exemplars tipus és una recomanació feta per la Comissió Internacional de Nomenclatura Zoològica, però en el nostre cas la publicació del present catàleg ha estat abans de tot la conseqüència pràctica d'assumir un sentit de responsabilitat amb relació a les col·leccions dels nostres museus. Quan la tasca històrica i recent de tants investigadors s'ha traduït en la confiança de dipositar espècimens tipus en aquests centres no podem defugir l'obligació, ni tampoc l'interès, de publicar de la manera més pràctica possible la informació referida als 'tipus'.
Sākumskolas skolēnu dabaszinātņu sasniegumus ietekmējošie valsts līmeņa faktori starptautiskajos salīdzinošajos pētījumos izglītības vadības skatījumā
2013
Elektroniskā versija nesatur pielikumus
Evolution education in natural history museums
2009
During 2009, scientists around the world will celebrate the 200th anniversary of the birth of Charles Darwin, the father of the theory of evolution, and the 150th anniversary of the publication of his main thesis, On the Origin of Species by Means of Natural Selection. Today, the theory of evolution is considered to be one of the greatest milestones in the history of science. Despite its undisputed merit in science, there seems to be constant turmoil around the theory in the public, which might be related to the incomplete understanding of the basic principles of evolution [1,2].