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Start Over Coverage 45-52

2. Drobnohledy

Creator:
Strouhal, Čeněk and Novák, Vladimír
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
optika, mikroskopie, optics, microscopy, 6, and 53
Language:
Czech
Description:
V minulém roce jsme přinesli výňatek z pamětí brněnského fyzika Vladimíra Nováka. Nyní využíváme příležitosti ukázat v bloku textů věnovaných mikroskopům a mikroskopii pedagogické mistrovství Vladimíra Nováka a jeho učitele Čeňka Strouhala úryvkem z kapitoly o optických přístrojích, kterou Novák zpracoval podle Strouhalových a vlastních přednášek a novější literatury., Čeněk (Vincenc) Strouhal, Vladimír Novák. (V úvodu medailonky obou autorů.), and [Optika. Jednota českých mathematiků a fysiků, Praha 1919, s. 266-278]
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Každodennost reformního procesu (na příkladu Moravy)

Creator:
Sviták, Zbyněk
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
česká a uherská královna, císařovna, choť Františka Štěpána I., římskoněmeckého císaře, Marie Terezie, 1717-1780, státní správa, diplomatika, state administration, diplomatics, úřednictvo, bureaucracy, 8, and 94(437)
Language:
Czech and English
Description:
This paper examines the personal interventions of the empress in the reform process. Maria Theresa intervened in this process in various ways. First of all, she was able to supervise it directly through her signing of official documents, to which she would add instructions for their enactment to the court authorities or to particular countries of her realm. She also tried to make sure that competent individuals were appointed to the administrative apparatus responsible for implementing and supervising the reforms, irrespective of their social estate - though in this she was only partly successful. In addition, she kept her civil servants in check by requiring them to file regular reports. Finally, by calling for fiscal economies she had a hand in controlling public expenditure., Zbyněk Sviták., and Obsahuje bibliografické odkazy
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

4. Oscillations of certain functional differential equations

Creator:
Grace, Said R.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
math, differential equations, and oscillation
Language:
English
Description:
Sufficient conditions are presented for all bounded solutions of the linear system of delay differential equations \[ (-1)^{m+1}\frac{d^my_i(t)}{dt^m} + \sum ^n_{j=1} q_{ij} y_j(t-h_{jj})=0, \quad m \ge 1, \ i=1,2,\ldots ,n, \] to be oscillatory, where $q_{ij} \varepsilon (-\infty ,\infty )$, $h_{jj} \in (0,\infty )$, $i,j = 1,2,\ldots ,n$. Also, we study the oscillatory behavior of all bounded solutions of the linear system of neutral differential equations \[ (-1)^{m+1} \frac{d^m}{dt^m} (y_i(t)+cy_i(t-g)) + \sum ^n_{j=1} q_{ij} y_j (t-h)=0, \] where $c$, $g$ and $h$ are real constants and $i=1,2,\ldots ,n$.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

5. Purification and stability during storage of phoshoenolpyruvate carboxylase from leaves of Amaranthus hypochondriacus, a NAD-ME type C4 plant

Creator:
Gayathri, J., Parvathi, K., and Raghavendra, A. S.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
DEAE-Sepharose, glucose-6-phosphate, glycerol, hydroxylapaatite, L-malate, phosphate, phosphoenolpyravate, and Seralose-6B
Language:
Multiple languages
Description:
A traditional method is reported for purification of phosphoenolpyruvate carboxylase (PEPC; EC 4.1.1.31) from leaves of Amaranthus hypochondriacus L. with a high yield of 50 %, 135-fold purification, and specific activity of 900 mmol kg-1(protein) s-1. PEPC was purified from light-adapted leaves of A. hypochondriacus, involving 40-60 % ammonium sulphate fractionation, followed by chromatography on columns of DEAE-Sepharose, hydroxylapatite (HAP), and Seralose 6-B. The enzyme appeared as a single band on 10 % SDS-PAGE, with a molecular mass of about 100 kDa. Kinetic studies with purified enzyme confirmed the PEPC to be the light-form of the enzyme. Glycerol generally increased the stability of PEPC. The stability and storage of the purified enzyme was studied at temperatures of 4 °C, -20 °C, and liquid nitrogen. PEPC maintained its activity for up to 3 months upon storage with 50 % (v/v) glycerol in liquid nitrogen. and J. Gayathri, K. Parvathi, A. S. Raghavendra.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6. Vibrations of turbine blades bundles model with rubber damping elements

Creator:
Půst, Ladislav and Pešek, Luděk
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
mathematical model, bundle of five blades, rubber damping elements, and eigenmodes
Language:
English
Description:
A detailed analysis of dynamical properties of five-blade-bundle mathematical model was carried out with the aim to investigate how the damping elements made of rubber inserted into slots between blades heads influence the response curves at different distribution of exciting harmonic forces. Viscous-elastic linear Voigt-Kelvin model was used for modeling the rheological properties of damping elements. Constant values of stiffness and damping parameters were supposed at analysis. The orthogonality of excitation forces distribution to the other eigenmodes of blades bundle is applied at insulated selected resonance. and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public