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93. 2D materiály aneb grafen a jak to bylo dál

Creator:
Hájková, Zdeňka, Ledinský, Martin, Hývl, Matěj, Vetushka, Aliaksei, Fejfar, Antonín, Řáhová, Jaroslava, and Frank, Otakar
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
grafen, graphene, 2D materiály, 2D materials, 6, and 53
Language:
Czech and English
Description:
Odlupováním vrstevnatých materiálů (např. grafitu) lze připravit 2D krystaly s tloušťkou jednoho nebo několika málo atomů. Nejznámějším takovým 2D materiálem je grafen (monovrstva grafitu), nicméně v současnosti existují a intenzivně se zkoumají desítky podobných struktur. Příspěvek podává základní přehled o 2D materiálech, jejich vlastnostech, metodách přípravy a možných aplikacích., Layered materials (such as graphite) can be exfoliated to produce 2D crystals with a thickness of one of just a few atoms. The best known 2D material is graphene (monolayer of graphite), yet there are tens of similar structures, which are being studied intensively at the moment. This article presents a brief summary of 2D materials, their properties, methods of preparation and potential application., Zdeňka Hájková, Martin Ledinský, Matěj Hývl, Aliaksei Vetushka, Antonín Fejfar, Jaroslava Řáhová, Otakar Frank., and Obsahuje bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

94. 2Hz-electroacupuncture attenuates heroin-seeking behaviors via adjusts CB1-Rs and CB2-Rs expression in relapse-relevant brain regions of heroin self-administration rats

Creator:
Chen, Lin, Gong, Xiao-Kang, Leng, Chang-Long, Ma, Bao-Miao, Ru, Qin, Xiong, Qi, Yue, Kai, Zhou, Mei, Tian, Xiang, Li, Chao-Ying, and Wu, Yu-Xiang
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
heroin self-administration, 2Hz-electroacupuncture, heroinseeking behaviors, and CB1-Rs and CB2-Rs
Language:
English
Description:
Opiate addiction has a high rate of relapse. The accumulating evidence shows that electroacupuncture (EA) may be effective for the treatment of opiate relapse. However, the change of expression of CB1-Rs and CB2-Rs involve in 2Hz EA anti-relapse pathway is still unclear. To explore the changes of expression of CB1-Rs and CB2-Rs, heroin self-administration (SA) model rats were adopted and treated using 2Hz EA. The expressions of CB1-Rs and CB2-Rs were observed using immunohistochemistry method. The results showed that, compared with the control group, active pokes in the heroin-addicted group increased, while the active pokes decreased significantly in 2Hz EA group compared with heroin-addicted group. Correspondingly, the expression of CB1-Rs in prefrontal cortex (PFC), hippocampus (Hip), nucleus accumbens (NAc) and ventral tegmental area (VTA) all increased significantly while the expression of CB2-Rs in those relapse-relevant brain regions decreased obviously in heroin-addicted group when compared with the control group. In addition, the expression of CB1-Rs obviously decreased in the 2Hz EA group while the expression of CB2-Rs in those relapserelevant brain regions increased significantly when compared with the heroin-addicted group. It indicated that 2Hz EA could attenuate the heroin-evoked seeking behaviors effectively. The anti-relapse effects of 2Hz EA might be related to the decrease of CB1-Rs and increase of CB2-Rs expression in relapse-relevant brain regions of heroin SA rats.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

95. 3-D trend of aseismic creep along active faults in western part of the Gulf of Corinth, Greece

Creator:
Stemberk, Josef and Blahoslav Košťák
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, tektonika, geotectonics, Řecko, Greece, active tectonics, 3-D monitoring, fault movements, The Gulf of Corinth, 7, and 551
Language:
English
Description:
Quaternary faulting in the western part of the Gulf of Corinth has been evidenced by geology and geomorphology, as well as by seismic recording. A series of three main normal fault segments are aligned in a steep southern coastal zone of the gulf. These fault segments, 15 to 25 km long, have an average strike of 90° - 105° and a northward dip of about 50° - 75°. Selected fault points were equipped with 3-D crack gauges TM71 during 2002 to monitor movements along the fault planes here, as well as on another fault cutting through the small island of Trizonia near the opposite northern shore of the gulf. Results of the monitoring present relative displacements induced by active tectonic movement s. Generally, the movements recorded on the faults are characteristic of an aseismic linear creep in vertical, i.e. upliftin g/subsiding in rates of mm per year due to uplifts of the Peloponnesian Peninsula. In 2003 a thr ee months long period of fast acceleration of movements was recorded. During this acceleration phase displacements changed to skew uplifting/subsiding with a left-lateral horizontal component. Moreover, horizontal rotation of monitored blocks corresponding to a sy stematic westwards opening of the Gulf was observed with only single eastward opening episodes., Josef Stemberk and Blahoslav Košťák., and Obsahuje bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

97. 3. konference evropského veřejného zdravotnictví

Creator:
Holčík, Jan
Format:
22-24, braille, text, and regular print
Type:
model:article, article, Text, and TEXT
Subject:
kongresy jako téma, veřejné zdravotnictví, financování organizované, primární prevence, podpora zdraví, poskytování zdravotní péče--trendy, lidé, výzkum zdravotnických systémů, and humánní ekologie
Language:
Czech and English
Description:
Jan Holčík and Literatura 6
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

98. 3D echocardiography - a useful method for cardiovascular risk assessment in end-stage renal disease patients

Creator:
Kovářová, Magdaléna, Žilinská, Zuzana, Páleš, Ján, Kužmová, Zuzana, Gažová, Andrea, Smaha, Juraj, Kužma, Martin, Jackuliak, Peter, Štvrtinová, Viera, Kyselovič, Ján, and Payer, Juraj
Format:
počítač and online zdroj
Type:
model:article and TEXT
Subject:
fyziologie člověka, lékařství, human physiology, medicine, End-stage chronic kidney disease, Hemodialysis, Kidney transplantation, Ankle-brachial index, Echocardiography, 14, and 612
Language:
English
Description:
a1_Patients with chronic kidney disease (CKD) have an increased risk of premature mortality, mainly due to cardiovascular causes. The association between hemodialysis and accelerated atherosclerosis has long been described. The ankle-brachial index (ABI) is a surrogate marker of atherosclerosis and recent studies indicate its utility as a predictor of future cardiovascular disease and all-cause mortality. The clinical implications of ABI cut-points are not well defined in patients with CKD. Echocardiography is the most widely used imaging method for cardiac evaluation. Structural and functional myocardial abnormalities are common in patients with CKD due to pressure and volume overload as well as non-hemodynamic factors associated with CKD. Our study aimed to identify markers of subclinical cardiovascular risk assessed using ABI and 2D and 3D echocardiographic parameters evaluating left ventricular (LV) structure and function in patients with end-stage renal disease (ESRD) (patients undergoing dialysis), patients after kidney transplantation and non-ESRD patients (control). In ESRD, particularly in hemodialysis patients, changes in cardiac structure, rather than function, seems to be more pronounced. 3D echocardiography appears to be more sensitive than 2D echocardiography in the assessment of myocardial structure and function in CKD patients. Particularly 3D derived end-diastolic volume and 3D derived LV mass indexed for body surface appears to deteriorate in dialyzed and transplanted patients. In 2D echocardiography, myocardial mass represented by left ventricular mass/body surface area index (LVMI) appears to be a more sensitive marker of cardiac structural changes, compared to relative wall thickness (RWT), left ventricle and diastolic diameter index (LVEDDI) and left atrial volume index (LAVI)., a2_We observed a generally favorable impact of kidney transplantation on cardiac structure and function; however, the differences were non-significant. The improvement seems to be more pronounced in cardiac function parameters, peak early diastolic velocity/average peak early diastolic velocity of mitral valve annulus (E/e´), 3D left ventricle ejection fraction (LV EF) and global longitudinal strain (GLS). We conclude that ABI is not an appropriate screening test to determine the cardiovascular risk in patients with ESRD., Magdaléna Kovářová, Zuzana Žilinská, Ján Páleš, Zuzana Kužmová, Andrea Gažová, Juraj Smaha, Martin Kužma, Peter Jackuliak, Viera Štvrtinová, Ján Kyselovič, Juraj Payer., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

99. 3D how much can we trust some moment tensors or an attempt of seismic moment error estimation

Creator:
Kolář, Petr
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, seizmicita, seismicity, seismic moment tensor inversion, error estimation, seismic moment decomposition, 7, and 551
Language:
English
Description:
During routine processing of selected events of an active KTB experiment it has appeared doubts concerning data reliability and consequently the reliability of results based on them. In the paper 3 events are studied in detail, full seismic moment tensors, as well as their errors, are determined (by non-linear inversion of P/SH waves ratios). It is shown that for the processed low constrained data moment tensor (MT) can be determined, however the relative error is of order of first tens of percent; the results also considerably depend on the way of data picking, used medium model, way of Cost function construction, etc. Any subsequent geophysical interpretation therefore should takes into account this uncertainty. MTs are finally decomposed into DC and non-DC parts, MTs errors are also transformed., Petr Kolář., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

100. 3D microscopic imaging and evaluation of tubular tissue architecture

Creator:
Jiří Janáček, Čapek, M., Michálek, J., Petr Karen, and Lucie Kubínová
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, mozek, brain, confocal microscopy, capillaries, skeletal muscle, image analysis, 14, and 612
Language:
English
Description:
3D microscopy and image analysis provide reliable measurements of length, branching, density, tortuosity and orientation of tubular structures in biological samples. We present a survey of methods for analysis of large samples by measurement of local differences in geometrical characteristics. The methods are demonstrated on the structure of the capillary bed in a rat brain., J. Janáček ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

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