Search results for "Otus"
showing 10 items of 567 documents
Polysaccharides from Pleurotus eryngii var. elaeoselini (Agaricomycetes), a New Potential Culinary-Medicinal Oyster Mushroom from Italy.
2020
Three water-soluble glucans (PELPS-A1, PELPS-A2, and PELPS-A3) purified from the hot water extract of the basidiomata of an edible mushroom Pleurotus eryngii var. elaeoselini by chromatography on DEAE-cellulose 32 and Sephadex G-100 column were found to consist of only D-glucose as monosaccharide constituent. Structural investigation was carried out by acid hydrolysis, periodate oxidation, and NMR experiments (1H-NMR, 13C-NMR, DQF-COSY, TOCSY, ROESY, HMQC, and HMBC). On the basis of these experiments, the structures of the repeating unit of the three isolated polysaccharides were established as follows: (1) PELPS-A1: {[→3)-α-D-Glcp-(1→]3→4)-α-D-Glcp-(1→2)-α-D-Glcp-(1→6)-α-D-Glcp-(1[→6)-β-D-…
Polish Yellow Sweet Clover (Melilotus officinalis L.) Honey, Chromatographic Fingerprints, and Chemical Markers
2017
A case study of Polish Melilotus officinalis honey was presented for the first time. Gas chromatography–mass spectrometry (GC-MS) (after steam distillation, Soxhlet extraction, ultrasonic solvent extraction, and solid phase extraction (SPE)) and targeted high performance liquid chromatography with a photodiode array detector (HPLC-PAD) were applied to determine the characteristic components of honey. While ubiquitous in most honeys, carbohydrates, terpene derivatives, and phenylacetic acid dominated in the Soxhlet extracts (25.54%) and in the application of SPE (13.04%). In addition, lumichrome (1.85%) was found, and may be considered as a marker of this honey. Due to the presence of these …
Nopean painonpudotuksen vaikutukset kehon koostumukseen sekä neste- ja hormonitasapainoon kansallisen huipputason painijoilla
2007
Sarkkinen, Pasi 2007. Nopean painonpudotuksen vaikutukset kehon koostumukseen sekä neste- ja hormonitasapainoon kansallisen huipputason painijoilla. Liikuntabiologian laitos, Jyväskylän yliopisto. Pro Gradu –tutkielma. Nopean ja suuren painonpudotuksen vaikutuksia urheilijan elimistöön on tutkittu verrattain vähän ja mahdollisia terveydellisiä riskejä ei ole juurikaan tiedostettu. Nopea painonpudotus on hyvin yleisesti käytetty menetelmä painoluokkalajeissa, kun normaalipaino ylittää kilpailusarjan. Painijoiden painon pudotus ala- ja keskisarjoissa on useimmiten 5-8 kg eli 8-12 % kehonpainosta. 18 tervettä suomalaista painijaa osallistui kreikkalais-roomalaisen tyylin SM-kilpailuihin (2004)…
Echinoderm Antimicrobial Peptides
2016
Abstract Antimicrobial peptides (AMPs) are widely expressed in organisms and have been linked to innate and acquired immunity in vertebrates. These compounds are constitutively expressed from different cellular types to interact directly with infectious agents and/or modulate immunoreactions. In invertebrates, including echinoderms, which lack a vertebrate-type adaptive immune system, AMPs represent the major humoral defense system against infection, showing a diverse spectrum of action mechanisms, most of them related to plasma membrane disturbance and lethal alteration of microbial integrity. Here, we summarize the knowledge of AMPs in echinoderms as Strongylocins identified in the sea ur…
Yliopistouudistuksen diskursiivinen rakentuminen Jyväskylän yliopistoyhteisössä 2009-2010
2012
Pro gradu -tutkielmassani tarkastelen Suomen uudelle yliopistolaille (2009) annettuja ristiriitaisia merkityksiä Jyväskylän yliopistoyhteisössä. Yliopistouudistus toi mukanaan merkittäviä taloudellisia ja ideologisia muutoksia suomalaiseen yliopistokenttään, ja siksi muutoksista on kiistelty paljon. Keskusteluissa on kuitenkin luonnehtinut ”yliopistouudistus hyvänä vs. pahana” -asettelu, joka ei ole paras mahdollinen tapa lähestyä uudistuksen jälkiteollisia syitä ja moninaisia seurauksia. Diskurssintutkimuksen näkökulmasta yliopistouudistuskeskustelut ovat kielellisten ”totuuksien” luomista siitä, mikä on suomalaisten yliopistojen tarkoitus nyky-yhteiskunnassa. Näillä ”totuuksilla” eli ylio…
Evolutionary trends in arvicolids and the endemic murid Mikrotia - New data and a critical overview
2014
Abstract The study of evolutionary rates dates back to the work of Simpson and Haldane in the 1940s. Small mammals, especially Plio-Pleistocene arvicolids (voles and lemmings), are particularly suited for such studies because they have an unusually complete fossil record and exhibit significant evolutionary change through time. In recent decades, arvicolids have been the focus of intensive research devoted to the tempo and mode of evolutionary change and the identification of trends in dental evolution that can be used to correlate and date fossil sites. These studies have raised interesting questions about whether voles and lemmings had unique evolutionary trajectories, or show convergent …
Multiple morphological characters needed for field identification of cryptic long‐eared bat species around the Swiss Alps
2010
The identification of cryptic species may significantly change our view about their distribution, abundance, ecology and therefore conservation status. In the European Alps, molecular studies have revealed the existence of three sibling species of plecotine bats Plecotus auritus, Plecotus austriacus and, very recently, Plecotus macrobullaris. Knowledge of the ecological niche partitioning of cryptic species is a requisite to develop sound conservation policies. Yet, this requests the development of unambiguous identification methods easily applicable in the field. This study investigates the reliability of several morphological methods used for species recognition and proposes a new identif…
Evaluation of the “Bottleneck” Effect in an Isolated Population of Microtus hartingi (Rodentia, Arvicolinae) from the Eastern Rhodopes (Bulgaria) by …
2022
An integrative analysis of an isolated population of Harting’s vole (Microtus hartingi) from the Eastern Rhodope Mountains (Bulgaria) was carried out by morphological and morphometric methods, computed tomography, Cytb variation data, and experimental hybridization. Substantial changes in the development of the skull and teeth were found. Nevertheless, those voles can live to the senex stage. A phylogenetic reconstruction based on Cytb sequences showed that M. hartingi from the Eastern Rhodopes forms a separate clade, which is a sister clade to the voles from Northeastern Greece (also from the foothills of the Rhodopes). M. hartingi from the Rhodopes is mostly isolated reproductively …
Direct interference or indirect exploitation? An experimental study of fitness costs of interspecific competition in voles
2002
Studies on competing mammalian species in the past have focused mainly on the competitive exclusion of one species from the preferred habitat of the other. Investigations on effects of competition and coexistence on individual fitness are rare. In this study we were able to measure effects of interspecific competition on major fitness components, using a system with two vole species in asymmetric competition. Survival, reproduction and space use of bank vole Clethrionomys glareolus females were monitored in 32 enclosed populations over four replicates of eight parallel run enclosures. Into half of the enclosures we introduced an additional number of field voles Microtus agrestis, a dominant…
Cadmium induces the expression of specific stress proteins in sea urchin embryos.
2004
Abstract Marine organisms are highly sensitive to many environmental stresses, and consequently, the analysis of their bio-molecular responses to different stress agents is very important for the understanding of putative repair mechanisms. Sea urchin embryos represent a simple though significant model system to test how specific stress can simultaneously affect development and protein expression. Here, we used Paracentrotus lividus sea urchin embryos to study the effects of time-dependent continuous exposure to subacute/sublethal cadmium concentrations. We found that, between 15 and 24 h of exposure, the synthesis of a specific set of stress proteins (90, 72–70, 56, 28, and 25 kDa) was ind…