Search results for "OCT"
showing 10 items of 3052 documents
Sleep–wake problems in patients with amyotrophic lateral sclerosis: implications for patient management
2012
SUMMARY Sleep–wake problems are frequent, although unrecognized, complications of amyotrophic lateral sclerosis (ALS). Sleep disorders such as insomnia, sleep-disordered breathing and restless legs syndrome have all been reported in patients with ALS, despite the limited number of studies and the small populations investigated so far. Sleep disturbances gradually worsen with disease progression, suggesting a relationship between the severity of disease and the neurodegenerative process. However, poor sleep can also be a consequence of several disturbances such as anxiety, depression, pain, choking, sialorrhea, fasciculations, cramps, nocturia and the inability to get comfortable and move f…
Education, Work and Life
2018
In this chapter, I will study the relationship between education and working life from a few viewpoints. First, I will examine how everyday working life has changed and how education has to change. Second, I will depict how the practices of both education and the working world can and should be researched in terms of the theory of practice architectures. Third, I will come back to reflect on the relationships between work, education and life. The work that people do has increasingly been immaterialized. Working life has been detached from material production which is more and more automated and robotically driven. According to a Swiss professor Schwab (2015, 2016), we have already moved int…
Enhancement of the Intermolecular Magnetic Exchange through Halogen···Halogen interactions in Bisadeninium Rhenium(IV) Salts
2017
Two novel ReIV salts of general formula [H2ade]2[ReIVX6]X2·4H2O [H2ade2+ = 9H-adenine-1,7-diium; X = Cl(1) and Br(2)] have been synthesized and magneto-structurally characterized. 1 and 2 are isostructural salts that crystallize in the orthorhombic system with space group Fdd2. Both compounds are made up of discrete mononuclear [ReIVX6]2- and X- anions and doubly protonated adenine cations. The six-coordinate rhenium(IV) ion is bonded to six halide ligands [X = Cl (1) and Br (2)] in an octahedral geometry. Short intermolecular ReIV−X···X−ReIV interactions, as well as ReIV−X···H−N(H2ade) and ReIV−X···H−Ow hydrogen bonds, are present in the crystal lattice of 1 and 2. Magnetic suscep-tibility…
Internationalisation of social work doctoral studies : experiences and perspectives in the changing context of European higher education
2016
The internationalisation of doctoral education in social work has become a newly developing area particularly in Europe during the last two decades. It has been promoted by two factors: (1) the reform of higher education (Bologna reform), which contributed to the development of doctoral study and (2) the establishment of European funding programmes that would allow international cooperation and ensure the quality of the programmes. Also, in the European Qualification Framework the knowledge, skills and competences gained by doctoral qualification are defined. In this article, we analyse three international doctoral projects that were developed in Europe in last 10 years. We focus on what th…
Intraspecific Differences in Spectral Reflectance Curves as Indicators of Reduced Vitality in High-Arctic Plants
2017
Remote sensing is a suitable candidate for monitoring rapid changes in Polar regions, offering high-resolution spectral, spatial and radiometric data. This paper focuses on the spectral properties of dominant plant species acquired during the first week of August 2015. Twenty-eight plots were selected, which could easily be identified in the field as well as on RapidEye satellite imagery. Spectral measurements of individual species were acquired, and heavy metal contamination stress factors were measured contemporaneously. As a result, a unique spectral library of dominant plant species, heavy metal concentrations and damage ratios were achieved with an indication that species-specific chan…
A quest for initiating cells of head and neck cancer and their treatment.
2010
The biology of head and neck squamous cell carcinomas (HNSCC) and other cancers have been related to cancer stem-like cells (CSC). Specific markers, which vary considerably depending on tumor type or tissue of origin, characterize CSC. CSC are cancer initiating, sustaining and mostly quiescent. Compared to bulk tumors, CSC are less sensitive to chemo- and radiotherapy and may have low immunogenicity. Therapeutic targeting of CSC may improve clinical outcome. HNSCC has two main etiologies: human papillomavirus, a virus infecting epithelial stem cells, and tobacco and alcohol abuse. Here, current knowledge of HNSCC-CSC biology is reviewed and parallels to CSC of other origin are drawn where n…
Octopamine increases individual and collective foraging in a neotropical stingless bee
2020
The biogenic amine octopamine (OA) is a key modulator of individual and social behaviours in honeybees, but its role in the other group of highly eusocial bees, the stingless bees, remains largely unknown. In honeybees, OA mediates reward perception and affects a wide range of reward-seeking behaviours. Thus, we tested the hypothesis that OA increases individual foraging effort and collective food source exploitation in the neotropical stingless bee Plebeia droryana . OA treatment caused a significant increase in the number of bees at artificial sucrose feeders and a 1.73-times higher individual foraging frequency. This effect can be explained by OA lowering the sucrose response threshold …
Testis differentiation in the glowworm,Lampyris noctiluca, with special reference to the apical tissue
2001
The gonads of Lampyris noctiluca are sexually undifferentiated during the first larval instars. They consist of many gonadal follicles that include the germ stem cells enclosed by the somatic cells of the follicle wall. Follicle wall cells are more numerous at the follicle apices than at the distal parts, but different cell types cannot be distinguished. In male larvae, the appearance of apical follicle tissue, derived from follicle wall cells, marks the onset of testis differentiation. When maximally expressed, the apical tissue occupies about the upper half of the testis follicles and can be observed in larvae of the fifth and sixth instar. The apical tissue is characterized by its “light…
Localization of n-alcohols and structural effects in aqueous solutions of sodium dodecyl sulfate
1997
Small-angle neutron Mattering measurements OD sodium dodecyl sulfate aqueous solutions have been performed in the presence of n-alcohols, from methanol to octanol, at different alcohol concentrations. By modeling the experimental intensities, it was possible to obtain structural information and to derive simultaneously the distribution of the alcohols between the aqueous and the micellar phases. It was found that short chain alcohols tend to remain in the aqueous phase and, by altering the solvent properties, induce a decrease in the aggregation number of sodium dodecyl sulfate micelles. On the other hand, alcohols with longer hydrocarbon chains were found to be present in both phases thoug…
Sudrabaino mākoņu novērojumu žurnāli, 1969: Rīga, Sigulda
1969
Digitalizētie mezosfēras mākoņu 1969. gada RĪGAS (nepilnīgi dati) un SIGULDAS novērojumu žurnāli: novērojumu sezonas naktis, novērotāji, MK identifikācija, meteoroloģiskā situācija, informācija par uzņemtajām fotogrāfijām. --//-- Mesospheric cloud observation data in Riga (uncompleted data) and Sigulda, 1969, digitized observation logs: observation season nights, observers, MC identification, meteorological situation, information about the photos taken.