716 research outputs found
Anaesthesia Management for Awake Craniotomy: Systematic Review and Meta-Analysis
No full textBackground
Awake craniotomy (AC) renders an expanded role in functional neurosurgery. Yet, evidence
for optimal anaesthesia management remains limited. We aimed to summarise the latest
clinical evidence of AC anaesthesia management and explore the relationship of AC fail ures on the used anaesthesia techniques.
Methods
Two authors performed independently a systematic search of English articles in PubMed
and EMBASE database 1/2007-12/2015. Search included randomised controlled trials
(RCTs), observational trials, and case reports (n>4 cases), which reported anaesthetic
approach for AC and at least one of our pre-specified outcomes: intraoperative seizures,
hypoxia, arterial hypertension, nausea and vomiting, neurological dysfunction, conversion
into general anaesthesia and failure of AC. Random effects meta-analysis was used to esti mate event rates for four outcomes. Relationship with anaesthesia technique was explored
using logistic meta-regression, calculating the odds ratios (OR) and 95% confidence inter vals [95%CI].
Results
We have included forty-seven studies. Eighteen r
New floristic records in the Balkans: 1
No full textUdgivelsesdato: April 2006New chorological data are presented for 95 species and subspecies from Albania (report no. 80), Bosnia &Herzegovina (70, 82), Bulgaria (15-30, 72-75, 83-95), Greece (1-14, 31-69), and Serbia & Montenegro (70,71, 76-79, 81, 82). The taxa belong to the following families: Amaranthaceae (2, 15, 16), Amaryllidaceae(38), Apiaceae (17, 18, 47, 80, 83, 84), Asclepiadaceae (85), Asteraceae (29, 31, 86-91), Brassicaceae(3, 48, 70), Campanulaceae (49, 71, 76), Cannabaceae (72), Caprifoliaceae (4), Caryophyllaceae (19,20, 32, 33, 50-52), Chenopodiaceae (5), Cyperaceae (28, 78), Dipsacaceae (34, 53, 54), Fabaceae (6-8, 21, 22, 55, 69), Guttiferae (56), Iridaceae (39-41), Juncaceae (13), Lamiaceae (57-61), Liliaceae (42-46, 68), Linaceae (62), Ophioglossaceae (1), Orchidaceae (94), Orobanchaceae (63), Papaveraceae (92),Plantaginaceae (9), Poaceae (79, 95), Polygonaceae (93), Ranunculaceae (14, 23, 24, 35), Rhamnaceae(9), (79, 95), (93), (14, 23, 24, 35), (64), Rosaceae (65), Rubiaceae (66), Scrophulariaceae (25, 26, 36, 73, 77, 81), Solanaceae (10, 11, 74),Thymelaeaceae (30, 67, 82), Valerianaceae (37), Verbenaceae (12), Violaceae (27) and Vitaceae (75).(30, 67, 82), (37), (12), (27) and (75).First reports for countries are: Albania - Eryngium serbicum (80), Bulgaria - Parthenocissus quinquefolia (75), Greece - Gonocytisus dirmilensis (69), Littorella uniflora (9) and Verbena aristigera(75), Greece - (69), (9) and (12); Serbia & Montenegro - Campanula moravica (76), Daphne malyana (82), Lindernia dubia(77) and Poa timoleontis (79). Gonocytisus dirmilensis and Verbena aristigera are new for Europe.The publication includes contributions by B. Biel & Kit Tan (1-13), N. Böhling (14), D. Dimitrov & V.Vutov (15-28), R. Dimova & V. Vladimirov (29-30), Kit Tan & G. Vold (31-46), Kit Tan, G. Vold, G. Iatrou &G. Sfikas (47-68), Kit Tan, M. Vural & A. Strid (69), D. Lakušic & V. Stevanovic (70-71), A. Petrova (72-75),V. Randelovic, B. Zlatkovic, N. Randelovic & M. Juškovic (76-79), V. Stevanovic & S. Vukoijicic (80-81), V.Stevanovic & B. Zlatkovic (82) and V. Vladimirov (83-95).</p
Effect of atmospheric ageing on volatility and ROS of biodiesel exhaust nano-particles
No full textGenerally, the magnitude of pollutant emissions from diesel engines is ultimately coupled to the structure of fuel molecules. The presence of oxygen, level of unsaturation and the carbon chain length of respective molecules influence the combustion chemistry. It is speculated that increased oxygen content in the fuel may lead to the increased oxidative potential (Stevanovic, S. 2013). Also, upon the exposure to UV and ozone in the atmosphere, the chemical composition of the exhaust is changed. The presence of an oxidant and UV is triggering the cascade of photochemical reactions as well as the partitioning of semi-volatile compounds between the gas and particle phase. To gain an insight into the relationship between the molecular structures of the esters, their volatile organic content and the potential toxicity of diesel exhaust particulate matter, measurements were conducted on a modern common rail diesel engine. This research also investigates the contribution of atmospheric conditions on the transfer of semi-volatile fraction of diesel exhaust from the gas phase to the particle phase and the extent to which semi-volatile compounds (SVOCs) are related to the oxidative potential, expressed through the concentration of reactive oxygen species (ROS) (Stevanovic, S. 2013)..
MATLAB/Octave Implementation of Recommendation ITU-R P.1812
No full textMATLAB/Octave software implementation of Recommendation ITU-R P.1812-5 with a path-specific propagation prediction method for point-to-area terrestrial services in the frequency range 30 MHz to 3000 MHz.
This version of the code corresponds to the reference version of the code approved by ITU-R Working Party 3K and published on ITU-R SG 3 Software, Data, and Validation Web Page as digital supplement to Recommendation ITU-R P.1812-5
MATLAB/Octave Implementation of Recommendation ITU-R P.452
No full textMATLAB/Octave software implementation of Recommendation ITU-R P.452-16 with a prediction procedure for the evaluation of interference between stations on the surface of the Earth at frequencies above about 0.1 GHz.
This version of the code corresponds to the reference version approved by ITU-R Working Party 3M and published on ITU-R SG 3 Software, Data, and Validation Web Page as a digital supplement to Recommendation ITU-R P.452-16
MATLAB/Octave Implementation of Recommendation ITU-R P.1546
No full textMATLAB/Octave software implementation of Recommendation ITU-R P.1546-6 with a method for point-to-area predictions for terrestrial services in the frequency range 30 MHz to 4000 MHz.
This version of the code corresponds to the reference version of the code approved by ITU-R Working Party 3K and published on ITU-R SG 3 Software, Data, and Validation Web Page as digital supplement to Recommendation ITU-R P.1546
CO2 fixation and chlorophyll a fluorescence in leaves of Ramonda serbica during a dehydration -rehydration cycle
No full textChanges in CO2 photo-assimilation and PSII photochemical efficiency in Ramonda
serbica leaves during a dehydration–rehydration cycle were examined. The rate of
CO2 photo-assimilation was greatly reduced during dehydration, but recovery was
complete with rehydration when the relative water content of leaves reached values
similar to those of well-hydrated, control leaves.
The results showed that the response of R. serbica leaves to severe water stress
involves two different mechanisms. In the first, CO2 assimilation is limited by
stomata closure that creates an excess proton concentration in the lumen and
activates non-photochemical quenching. This plays an important role in the
mechanism of photoprotection by dissipation of excitation energy. When dehydration
became severe and leaf RWC reached very low values, the electron transport
rate (ETR) decreased markedly, while the capacity for regulatory mechanisms such
as qNP (non-photochemical quenching) was greatly reduced. For severely dehydrated
leaves of R. serbica, it appears that reactive oxygen species (ROS) formation is
better prevented by mechanisms that quench chlorophyll triplet formation via
lutein
MATLAB/Octave Implementation of Recommendation ITU-R P.1812-6
No full text<p>This code repository contains a MATLAB/Octave software implementation of <a href="https://www.itu.int/rec/R-REC-P.1812/en">Recommendation ITU-R P.1812-6</a> with a path-specific propagation prediction method for point-to-area terrestrial services in the frequency range 30 MHz to 6000 MHz.</p>
<p>This version of the code corresponds to the reference version approved by ITU-R Working Party 3K and published on <a href="https://www.itu.int/en/ITU-R/study-groups/rsg3/Pages/iono-tropo-spheric.aspx">ITU-R SG 3 Software, Data, and Validation Web Page</a>.</p>If you use this software, please cite it using the metadata from this file
Hierarchical structuring of psychopathological dimensions in youth : current progress and future steps with the Hierarchical Taxonomy of Psychopathology (HiTOP)
No full textOver the past two decades, it has become clear that psychopathology exists on continuous spectra organized hierarchically from broad, general symptom dimensions to more specific ones. This structure is best represented by the Hierarchical Taxonomy of Psychopathology (HiTOP) framework that incorporates individual signs, symptoms, and behaviors at its most specific level while encompassing higher-order dimensions at its broadest level. This commentary gives an overview of studies that evaluated higher-order dimensions of psychopathology and their alignment with the HiTOP framework. Studies consistently support the alignment of youth psychopathology with the HiTOP framework, particularly its general dimension of psychopathology and the broad internalizing and externalizing spectrum. The model also identifies distinct, lower-level dimensions such as fear, affectivity, antagonism, and attention problems. This hierarchical structure is evident across the entire age span but with specific makeup of dimensions appearing to differ between children and adolescents. Rapidly gaining momentum, current evidence indicates HiTOP’s effectiveness in conceptualizing youth mental health. Future studies should focus on exploring the HiTOP structure across different ages and populations, testing its real-world generalizability, selecting the most appropriate assessment tools, and understanding how the framework applies to youth from diverse societies and cultures. CC BY 4.0© The Author(s) 2024.Correspondence Address: D. Stevanovic; Clinic for Neurology and Psychiatry for Children and Youth, Belgrade, Serbia; email: [email protected] funding received.</p
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