Search results for "hair"
showing 10 items of 348 documents
Cellular components and tunic architecture of the solitary ascidian Styela canopus (Stolidobranchiata, Styelidae).
1998
Abstract Cell distribution and tunic morphology in the ascidian Styela canopus were examined by electron microscopy. The observations showed that the outer covering is composed of a thin sinuous cuticle with several protrusions and a deep layer of ground substance. The fibrous component and its arrangement in the tunic were demonstrated: elementary fibrils exhibit a ‘microtubular’ structure and an elliptical cross-sectional shape. Four types of cells were described: clear vesicular tunic granulocytes, tunic microgranulocytes, unilocular tunic granulocytes, and globular tunic granulocytes. Morphofunctional aspects of the tunic tissue and certain phylogenetic relationships are discussed.
Printing Life-Inspired Subcellular Scale Compartments with Autonomous Molecularly Crowded Confinement.
2019
A simple, rapid, and highly controlled platform to prepare life-inspired subcellular scale compartments by inkjet printing has been developed. These compartments consist of fL-scale aqueous droplets (few µm in diameter) incorporating biologically relevant molecular entities with programmed composition and concentration. These droplets are ink-jetted in nL mineral oil drop arrays allowing for lab-on-chip studies by fluorescence microscopy and fluorescence life time imaging. Once formed, fL-droplets are stable for several hours, thus giving the possibility of readily analyze molecular reactions and their kinetics and to verify molecular behavior and intermolecular interactions. Here, this pla…
Musicales traducidos y censurados en los escenarios españoles (1955-1985)
2015
[EN] The TRACEmu catalogue (Censored translations of musical productions,1955-1985) compiled from Spanish censorship archives will serve as a starting point to analize the most representative cases of the period: Man of La Mancha (1966), Godspell (1974), Hair and Jesus Christ Superstar (1975). [ES] Esta contribución analiza, a partir del análisis del catálogo de espectáculos musicales traducidos (censurados) y representados en los escenarios españoles (TRACEmu, 1955-1985), recopilado en los archivos de censura, los casos más representativos del periodo: El hombre de la Mancha (1966), Godspell (1974), Hair y Jesucristo Superstar (1975). Universidad del País Vasco, UPV/EHU. Grupo de Investiga…
Orthotrichum pilosissimum (Orthotrichaceae), a new moss from arid areas of Nevada with unique axillary hairs
2011
Abstract Orthotrichum pilosissimum is described from herbarium material and recently collected specimens in the state of Nevada. Its specific epithet refers to the diagnostic hyper-developed axillary hairs, which are frequently longer than 1 mm, multiseriate and branched, covering most of the stems surface and sometimes protruding from the foliose shoots. These hairs are not only unique in the genus but also among mosses, providing a reliable diagnostic character for the new taxon. Additional gametophytic and sporophytic characters that contribute to its taxonomic delimitation are also given.
Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Com…
2021
(1) Background: The purpose of this study was to evaluate the day-to-day variability and year-to-year reproducibility of an accelerometer-based algorithm for sit-to-stand (STS) transitions in a free-living environment among community-dwelling older adults. (2) Methods: Free-living thigh-worn accelerometry was recorded for three to seven days in 86 (women n = 55) community-dwelling older adults, on two occasions separated by one year, to evaluate the long-term consistency of free-living behavior. (3) Results: Year-to-year intraclass correlation coefficients (ICC) for the number of STS transitions were 0.79 (95% confidence interval, 0.70-0.86, p < 0.001), for mean angular velocity-0.81 (95% c…
La stereotomia nella cattedra di Architettura statica di Carlo Giachery
2014
La scuola di architettura di Palermo, sin dalla sua fondazione nel 1779, con la creazione della cattedra di Architettura civile affidata a Giuseppe Venanzio Marvuglia, era divenuta inevitabilmente il luogo di verifica e talvolta di esplorazione dei temi legati alla pratica professionale e, quindi, all’arte del costruire. Giachery, Professore di Architettura statica e civile dal 1837 al 1865, è il primo ad avvertire, da docente, la crisi profonda del sistema didattico della scuola di architettura di Palermo isterilita dalla ricerca di astratte idealità neoclassiche e straniatasi dal processo evolutivo della cultura architettonica europea dopo la morte dei “maestri” Marviglia e Gentile. Secon…
Postnatal Neurogenesis and Neuronal Regeneration
2004
The discovery of neurogenesis in the adult brain has challenged one of the central dogmas of neuroscience. Pioneer reports in rodents seed the ground for a detailed description in birds and reptiles, which was finally confirmed in discrete regions of several mammalian species including humans. This neurogenetical capability may serve as the basis for neuronal regeneration, as has already been described in the reptilian brain, and thus may represent a promising therapeutic approach. Consequently, in the last years there has been an important effort to deepen our knowledge of the biology, the functional significance and the regulation of adult neurogenesis.
Exposure to trace elements by hair mineral analysis. Mining , volcanic and urban areas
2015
Concerns about the effects of environmental exposure to metals and metalloids on human health have driven the scientific community to find reliable tools and methodologies for assessing the impact of emission of toxic metals from anthropogenic sources or through natural anomalous levels of metals in water, soil and air. Biological monitoring has been extensively employed with this end in view and blood, urine, hair and nails are the biological materials mostly collected and analyzed for the levels of multiple metals. With respect to blood and urine, whose metal concentrations decrease rapidly after the exposure period, hair and nails appear to be of greater value in evaluating past and cont…
Metals in Scalp Hair from Relapsing-Remitting Multiple Sclerosis Patients (RRMS)
2014
We measured the concentrations of 21 chemical elements (TE) in hair of 48 Sicilian patients with RRMS compared with 51 controls (HC). MS patients showed a significantly (p<0.01) lower hair concentration of Al and Rb and higher hair concentration of U compared to HC. The percentage of MS patients showing hair elemental concentrations greater than the 95th percentile of controls was 20% for Ni, 19% for Ba and U, and 15% for Ag, Mo and Se. The ratio Zn/Cu varied from 17 to 19, with no significant differences between HC and MS groups or between individuals differentiated by gender. No significant association was found between levels of each TE and age, disease duration, Expanded Disability Stat…
Comparative transcriptomics of albino and warningly coloured caterpillars
2018
AbstractColouration is perhaps one of the most prominent adaptations for survival and reproduction of most taxa. Colouration is of particular importance for aposematic species, which rely on their colouring and patterning to act as a warning signal against predators. Most research has focused on the evolution of warning colouration by natural selection. However, little information is available for colour mutants of aposematic species, particularly at the genomic level. Here I compare the transcriptomes of albino mutant caterpillars of the wood tiger moth (Arctia plantaginis) to those of their full-sibs having their distinctive orange-black warning colouration. The results showed >300 dif…