Number of results to display per page
Search Results
6162. Detektory infračerveného záření používané v optoelektronických přístrojích sesednutých jednotek armád NATO
- Creator:
- Chlup, Filip
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- cooler, Focal Plane Array, HgCdTe, microbolometer, Molecular Beam Epitaxy, QWIP, FPA, chladiče, kvantové jámy, mikrobolometr, and molekulární svazková epitaxe
- Language:
- Czech
- Description:
- The contemporary strategy of the NATO Armies emphasizes the importance of soldier as the individual. It tries to secure for him the informational and technological domination on the battlefield by means of the modernist technologies. The soldier should be able to fulfil his task under any conditions. The specific assignments of the soldier, the team, the squad, the platoon and the company necessitate the certain technological hierarchization, which reflects off the specific attributes of the infrared radiation detectors. These are situated in the focal plane of the objectives of the optoelectronic systems in the form of the micro detector array (IRFPA - InfraRed Focal Plane Array). and Současná strategie armád NATO vyzdvihuje důležitost vojáka jako jednotlivce. Za pomoci nejmodernější technologie se mu snaží zajistit informační a technologickou nadvládu na bojišti, aby byl schopen zvládnout svůj úkol za jakýchkoliv podmínek. Specifické úkoly vojáka - jednotlivce, týmu, družstva, čety a roty vyžadují určitou technologickou hierarchizaci, která se odráží i ve specifických vlastnostech detektorů infračerveného záření. Ty jsou umístěny v zaostřovací rovině objektivů optoelektronických systémů v podobě matice mikrodetektorů, která je známa pod akronymem IRFPA (InfraRed Focal Plane Array). V současné době nastupuje 3. generace IRFPA, která brzy pronikne i do oblasti sesednutých jednotek armád NATO.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
6163. Detektory jednotlivých fotonů a jejich použítí pro velmi přesná měření v kosmu
- Creator:
- Procházka, Ivan and Blažej, Josef
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- fyzika, fotonika, vesmír, photonics, universe, 6, and 53
- Language:
- Czech and English
- Description:
- Článek popisuje konstrukci polovodičových detektorů jednotlivých fotonů a jejich použití při velmi přesných měřeních vzdáleností a přenosu přesného času v kosmických projektech. Detektory vyvinuté v posledních třiceti letech na Českém vysokém učení technickém v Praze úspěšně pracují v laboratořích po celém světě i na palubě pěti kosmických sond., The construction of single photon semiconductor detectors is described in this paper together with their applications for high precision laser ranging and for laser time transfer in space projects. Detectors developed at the Czech Technical University in Prague over the last three decades are successfully operated on board of 5 satellites and in many labs worldwide., Ivan Procházka, Josef Blažej., and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
6164. Detektory kosmického záření a další technika v projektu CRREAT
- Creator:
- Dočkal, Miroslav
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Language:
- Czech
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
6165. Determinant of photosynthetic capacity in rice leaves under ambient air conditions
- Creator:
- Zhang, D.-Y., Wang, X.-H., Chen, Y., and Xu, D.-Q.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- carboxylation efficiency, flag leaf, intercellular CO2 concentration, leaf position, net photosynthetic rate, Oryza, and stomatal conductance
- Language:
- Multiple languages
- Description:
- At the grain-filling stage, net photosynthetic rate (PN), stomatal conductance (gs), and ribulose-1,5-bisphosphate carboxylation efficiency (CE) were correlated in order to find the determinant of photosynthetic capacity in rice leaves. For a flag leaf, PN in leaf middle region was higher than in its upper region, and leaf basal region had the lowest PN value. The differences in gs and CE were similar. PN, gs, and CE gradually declined from upper to basal leaves, showing a leaf position gradient. The correlation coefficient between PN and CE was much higher than that between PN and gs in both cases, and PN was negatively correlated with intercellular CO2 concentration (Ci). Hence the carboxylation activity or activated amount of ribulose-1,5-bisphosphate carboxylase/oxygenase rather than gs was the determinant of the photosynthetic capacity in rice leaves. In addition, in flag leaves of different tillers PN was positively correlated with gs, but negatively correlated with Ci. Thus gs is not the determinant of the photosynthetic capacity in rice leaves. and D.-Y. Zhang ... [et al.].
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
6166. Determinants of adrenal androgen hypofunction in premenopausal females with rheumatoid arthritis
- Creator:
- Richard Imrich, Vlcek, M., Kerlik, J., Vogeser, M., Kirchhoff, F., Adela Penesová, Radikova, Z., Lukac, J., and Jozef Rovenský
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Fyziologie člověka a srovnávací fyziologie, revmatoidní artritida, kortizol, rheumatoid arthritis, cortisol, hypothalamic-pituitary-adrenal axis, 14, and 612
- Language:
- English
- Description:
- The aim of our study was to investigate adrenocortical function in the context of disease activity and inflammatory status in premenopausal RA females. Adrenal glucocorticoid and androgen responses to the 1 μg ACTH 1-24 test were investigated in 23 premenopausal RA and in 15 age- and BMI-matched healthy females. Twelve RA patients were on low-dose prednisone (<8.5 mg/day). Patients with DAS28>3.2 had lower (p<0.05) total plasma cortisol, 17-hydroxyprogesterone, dehydroepiandrosterone and androstenedione responses in the ACTH test compared to healthy controls. Patients with DAS28>3.2 had lower (p<0.05) dehydroepiandrosterone response in the ACTH test compared to patients with DAS28≤3.2. C-reactive protein (CRP), DAS28, and interleukin (IL)-6 negatively correlated with androstenedione response to ACTH 1-24. Responses of all measured adrenal steroids were lower (p<0.05) in patients on low-dose glucocorticoids compared to healthy controls. RA patients not treated with glucocorticoids had lower total cortisol response (p=0.038) but did not differ in free plasma cortisol in the ACTH test. The results indicate an association of increased disease activity with a decrease in adrenal androgen production in RA and normal cortisol bioavailability in patients not treated with glucocorticoids., R. Imrich, M. Vlcek, J. Kerlik, M. Vogeser, F. Kirchhoff, A. Penesova, Z. Radikova, J. Lukac, J. Rovensky., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
6167. Determinants of change in the duration of ice phenomena on the Vistula River in Toruń
- Creator:
- Pawłowski, Bogusław
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- ice phenomena, Vistula River, natural factor, and human impact
- Language:
- Slovak
- Description:
- Winter season temperatures are becoming warmer. However, the transformation of the ice regime on the Vistula River in Toruń has also been affected by river engineering. In particular, the construction and operation of the Włocławek Dam had a significant impact on ice processes. The article presents the results of an analysis determining the contribution of natural and anthropogenic factors to the duration of ice phenomena and ice cover on the Vistula River in the city of Toruń. Compared to the end of the nineteenth century, there has been a reduction in the duration of ice phenomena from 88 to 53 days and of ice cover from 40 to 7 days (in the period of 1882-2011). The article compares the duration of ice cover and winter temperature in three different periods: before the completion of river engineering works (1882-1907); for the controlled river (1908-1969), and for the controlled river with the Włocławek Dam upstream of Toruń (1970-2011). The results showed a significant role of these anthropogenic factors in the changes of the ice cover duration on the Vistula River in Toruń.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
6168. Determinants of matrices associated with incidence functions on posets
- Creator:
- Hong, Shaofang and Sun, Qi
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- meet-closed set, greatest-type lower, incidence function, determinant, and nonsingularity
- Language:
- English
- Description:
- Let $S=\lbrace x_1,\dots ,x_n\rbrace $ be a finite subset of a partially ordered set $P$. Let $f$ be an incidence function of $P$. Let $[f(x_i\wedge x_j)]$ denote the $n\times n$ matrix having $f$ evaluated at the meet $x_i\wedge x_j$ of $x_i$ and $x_j$ as its $i,j$-entry and $[f(x_i\vee x_j)]$ denote the $n\times n$ matrix having $f$ evaluated at the join $x_i\vee x_j$ of $x_i$ and $x_j$ as its $i,j$-entry. The set $S$ is said to be meet-closed if $x_i\wedge x_j\in S$ for all $1\le i,j\le n$. In this paper we get explicit combinatorial formulas for the determinants of matrices $[f(x_i\wedge x_j)]$ and $[f(x_i\vee x_j)]$ on any meet-closed set $S$. We also obtain necessary and sufficient conditions for the matrices $f(x_i\wedge x_j)]$ and $[f(x_i\vee x_j)]$ on any meet-closed set $S$ to be nonsingular. Finally, we give some number-theoretic applications.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
6169. Determinants of preclinical atherosclerosis are different in type 1 and type 2 diabetic women
- Creator:
- Pavlína Piťhová, Kateřina Štechová, Jan Piťha, Věra Lánská, and Milan Kvapil
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Fyziologie člověka a srovnávací fyziologie, diabetes mellitus, type 1 diabetes mellitus, type 2 diabetes mellitus, carotid intima-media thickness, risk factors, subclinical atherosclerosis, 14, and 612
- Language:
- English
- Description:
- Diabetes mellitus type 2 ranks among the strongest predictors of cardiovascular diseases (CVD) while the association of type 1 diabetes with CVD is more complex. We studied differences between type 1 and 2 diabetic women regarding association of cardiovascular risk factors with preclinical atherosclerosis expressed as intima-media thickness of common carotid (IMT CCA) and femoral arteries (IMT CFA) measured by high resolution ultrasound. Women with type 1 (n=203) and type 2 diabetes (n=123) were examined with regard to the presence of cardiovascular risk factors. In type 1 diabetic women strong association between IMT CCA and body mass index, waist circumference, and total body fat was found in contrast to type 2 diabetic women. In type 2 diabetic women strong association between IMT CCA and fasting glucose, glycated hemoglobin, and atherogenic index of plasma (log TG/HDL cholesterol) was observed in contrast to type 1 diabetic women. In type 1 diabetic women, IMT CFA was associated with body fat in contrast to type 2 diabetic women. Preclinical atherosclerosis in type 1 diabetic women was strongly associated with factors reflecting body fat and its distribution, while in type 2 diabetic women preclinical atherosclerosis was associated with markers reflecting glucose and lipid metabolic disorders., P. Piťhová, K. Štechová, J. Piťha, V. Lánská, M. Kvapil., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
6170. Determinants of the choice of exchange rate regime in resource-rich countries
- Creator:
- Aliyev, Ruslan
- Publisher:
- CERGE-EI
- Format:
- electronic, svazek, and 35 stran
- Type:
- model:monograph and TEXT
- Subject:
- Finance, devizové kurzy, kurzová politika, foreign exchange rates, foreign exchange policy, 336.748, 339.74, (048.8), 4, and 336.7
- Language:
- English and Czech
- Description:
- Ruslan Aliyev., Obsahuje bibliografii a bibliografické odkazy, and Český a anglický abstrakt
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public