scholarly journals 16. Trumpet and Orchestra Concert in D Major by Georg Philipp Telemann in Interpretation Vision of Wynton Marsalis and Rafael Méndez

2020 ◽  
Vol 19 (1) ◽  
pp. 134-139
Author(s):  
Iulian Horez
Keyword(s):  
The Other ◽  
Georg Philipp Telemann ◽  
Upper Limit

AbstractLike most baroque concerts, the Concerto for trumpet and orchestra in D major by Georg Philipp Telemann raises particular problems of interpretation. It is a concert written in the head register of the trumpet, with frequent references in the acute register. I should mention that the head register of a trumpet depends on its size. At a normal trumpet in and flat (and not piccolo), the acute register is from do (and flat from the first octave) to the next do ascendant. The head register continues from do2 to do3. In the trumpets in do, re, mi flat, fa, sol, the principle remains the same, with a variability depending on the size of the trumpet, except that in the acute record the other notes correspond to that of the flat, but the upper limit is generally the same.

scholarly journals Discovery of allenyl acetylene, H2CCCHCCH, in TMC-1

2021 ◽  
Vol 647 ◽  
pp. L3 ◽  
Author(s):  
J. Cernicharo ◽  
C. Cabezas ◽  
M. Agúndez ◽  
B. Tercero ◽  
N. Marcelino ◽  
...  
Keyword(s):  
Column Density ◽  
State Of The Art ◽  
Rotational Temperature ◽  
Signal To Noise Ratio ◽  
Laboratory Data ◽  
The Other ◽  
Signal To Noise ◽  
Chemical Models ◽  
Upper Limit

We present the discovery in TMC-1 of allenyl acetylene, H2CCCHCCH, through the observation of nineteen lines with a signal-to-noise ratio ∼4–15. For this species, we derived a rotational temperature of 7 ± 1 K and a column density of 1.2 ± 0.2 × 1013 cm−2. The other well known isomer of this molecule, methyl diacetylene (CH3C4H), has also been observed and we derived a similar rotational temperature, Tr = 7.0 ± 0.3 K, and a column density for its two states (A and E) of 6.5 ± 0.3 × 1012 cm−2. Hence, allenyl acetylene and methyl diacetylene have a similar abundance. Remarkably, their abundances are close to that of vinyl acetylene (CH2CHCCH). We also searched for the other isomer of C5H4, HCCCH2CCH (1.4-Pentadiyne), but only a 3σ upper limit of 2.5 × 1012 cm−2 to the column density can be established. These results have been compared to state-of-the-art chemical models for TMC-1, indicating the important role of these hydrocarbons in its chemistry. The rotational parameters of allenyl acetylene have been improved by fitting the existing laboratory data together with the frequencies of the transitions observed in TMC-1.

scholarly journals GRAVITATIONAL LENSING BOUND ON THE AVERAGE REDSHIFT OF GAMMA RAY BURSTS IN MODELS WITH EVOLVING LENSES

1999 ◽  
Vol 08 (04) ◽  
pp. 507-517 ◽  
Author(s):  
DEEPAK JAIN ◽  
N. PANCHAPAKESAN ◽  
S. MAHAJAN ◽  
V. B. BHATIA
Keyword(s):  
Gravitational Lensing ◽  
Gamma Ray ◽  
Cosmological Parameters ◽  
Evolutionary Model ◽  
Gamma Ray Bursts ◽  
The Other ◽  
Upper Limit ◽  
Evolving Model ◽  
Evolving Models ◽  
The Universe

Identification of gravitationally lensed Gamma Ray Bursts (GRBs) in the BATSE 4B catalog can be used to constrain the average redshift <z> of the GRBs. In this paper we investigate the effect of evolving lenses on the <z> of GRBs in different cosmological models of the universe. The cosmological parameters Ω and Λ have an effect on the <z> of GRBs. The other factor which can change the <z> is the evolution of galaxies. We consider three evolutionary model of galaxies. In particular, we find that the upper limit on <z> of GRBs is higher in evolving model of galaxies as compared to non-evolving models of galaxies.

scholarly journals Primordial black holes and scotogenic dark matter

2021 ◽  
pp. 2150139
Author(s):  
Teruyuki Kitabayashi
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Energy Scale ◽  
The Other ◽  
Initial Mass ◽  
Primordial Black Holes ◽  
Upper Limit ◽  
Other Hand

We study the effect of the scotogenic dark matter on the primordial black holes (PBHs) and vice versa. We show that if the PBHs evaporate in the radiation dominated era, the upper limit of the initial mass of the PBHs [Formula: see text] should be constrained as [Formula: see text] for [Formula: see text] TeV scotogenic dark matter [Formula: see text] TeV is the most appropriate energy scale in the scotogenic model). On the other hand, if the PBHs evaporate in the PBH dominated era, a quite heavy scotogenic dark matter ([Formula: see text] GeV) for [Formula: see text] may be allowed.

scholarly journals Models of high-frequency quasi-periodic oscillations and black hole spin estimates in Galactic microquasars

2020 ◽  
Vol 643 ◽  
pp. A31
Author(s):  
A. Kotrlová ◽  
E. Šrámková ◽  
G. Török ◽  
K. Goluchová ◽  
J. Horák ◽  
...  
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Neutron Star ◽  
High Frequency ◽  
Accretion Disc ◽  
The Other ◽  
Periodic Oscillations ◽  
X Ray ◽  
Upper Limit ◽  
Oscillation Modes

We explore the influence of nongeodesic pressure forces present in an accretion disc on the frequencies of its axisymmetric and nonaxisymmetric epicyclic oscillation modes. We discuss its implications for models of high-frequency quasi-periodic oscillations (QPOs), which have been observed in the X-ray flux of accreting black holes (BHs) in the three Galactic microquasars, GRS 1915+105, GRO J1655−40, and XTE J1550−564. We focus on previously considered QPO models that deal with low-azimuthal-number epicyclic modes, |m| ≤ 2, and outline the consequences for the estimations of BH spin, a ∈ [0, 1]. For four out of six examined models, we find only small, rather insignificant changes compared to the geodesic case. For the other two models, on the other hand, there is a significant increase of the estimated upper limit on the spin. Regarding the falsifiability of the QPO models, we find that one particular model from the examined set is incompatible with the data. If the spectral spin estimates for the microquasars that point to a >  0.65 were fully confirmed, two more QPO models would be ruled out. Moreover, if two very different values of the spin, such as a ≈ 0.65 in GRO J1655−40 and a ≈ 1 in GRS 1915+105, were confirmed, all the models except one would remain unsupported by our results. Finally, we discuss the implications for a model that was recently proposed in the context of neutron star (NS) QPOs as a disc-oscillation-based modification of the relativistic precession model. This model provides overall better fits of the NS data and predicts more realistic values of the NS mass compared to the relativistic precession model. We conclude that it also implies a significantly higher upper limit on the microquasar’s BH spin (a ∼ 0.75 vs. a ∼ 0.55).

scholarly journals Prevalencia de síndrome de burnout en los estudiantes de la Carrera de Enfermería de la Universidad Central del Ecuador

2020 ◽  
Vol 4 (8) ◽  
pp. 38-54
Author(s):  
Luzmila De Jesús Carvajal Andrade ◽  
◽  
Belén del Rocío Logacho Villacís ◽  
Ramiro Rogelio Rojas Jaramillo ◽  
◽  
...  
Keyword(s):  
Standard Deviation ◽  
Confidence Interval ◽  
Key Words ◽  
Nursing School ◽  
The Other ◽  
Burnout Syndrome ◽  
Information Analysis ◽  
Academic Burnout ◽  
Upper Limit ◽  
The Mean

This research has been conducted in order to determine the Prevalence of the burnout syndrome among students from third to eighth semester who are attending the Nursing School. It was a prevalence study; the data were collected using the survey’s technique, in a questionnaire divided in five sections applied to 172 students. The information analysis was calculated using the Mean method and the Standard Deviation for the Academic burnout, while for the Labor burnout it was utilized the punctuation of: high, medium and low scales. The outcome results showed that the prevalence of the burnout Syndrome in both academic and labor was low. The 2.3 % of students had the Academic burnout, (Confidence interval: 95%, lower limit: 0.44% and upper limit: 4.21%) with a probability of 3.52%, on the other hand the Labor burnout was of 4% among students in the shifting internship, with a probability of 1.22%. Key words: Syndrome burnout, Stress, nursing.

scholarly journals Influence of trans-neptunian objects on motion of major planets and limitation on the total TNO mass from planet and spacecraft ranging

2009 ◽  
Vol 5 (S263) ◽  
pp. 93-97 ◽  
Author(s):  
E. V. Pitjeva
Keyword(s):  
Numerical Integration ◽  
Total Mass ◽  
High Accuracy ◽  
Circular Ring ◽  
The Other ◽  
Minimum Mass ◽  
Upper Limit ◽  
Other Hand ◽  
Analysis Of Motion

AbstractPerturbations from asteroids and Trans-Neptunian Objects affect significantly on the orbits of planets and should be taken into account when high-accuracy planetary ephemerides are constructed. On the other hand, from an analysis of motion of the major planets by processing of precise measurements of spacecraft a limitation on the total TNO mass may be obtained. To estimate influence of TNO on motion of planets the largest 21 TNO have been included into the process of simultaneous numerical integration, and positions of planets obtained with taking for TNO have been compared with positions of planets of numerical EPM ephemeris of IAA RAS constructed without these objects. The perturbations of other TNO have been modeled by the perturbation from a circular ring having a radius 43 AU and different masses. It has been shown that all the test masses of the TNO ring except the minimum mass (5.26⋅10−8M⊙) are too large and make the data residuals worse. Thus, the upper limit of the total mass of all TNO including Pluto, the 21 largest TNO and the TNO ring (with the 43 AU radius) should not exceed 8.04⋅10−8M⊙.

Rationale for Upper Limits of Electrolyte Replacement during Exercise

1992 ◽  
Vol 2 (3) ◽  
pp. 229-238 ◽  
Author(s):  
Fred Brouns ◽  
Wim Saris ◽  
Heinz Schneider
Keyword(s):  
Fluid Intake ◽  
The Other ◽  
Whole Body ◽  
Plain Water ◽  
Sweat Loss ◽  
Upper Limit ◽  
Other Hand ◽  
Gastrointestinal Distress ◽  
Upper Limits ◽  
Electrolyte Replacement

The addition of carbohydrate and sodium to sport drinks has been recommended to enhance fluid intake and absorption and to delay fatigue. Other electrolytes (E) which are lost through sweating are also commonly added. However, too many E may lead to increased serum E and osmolality levels, which may negatively influence thermoregulation, depress sweating, and cause gastrointestinal distress. On the other hand, drinking large amounts of plain water to compensate sweat loss may induce hyponatremia. Therefore, literature describing sweat E losses was examined in order to estimate average whole-body E loss and to determine an upper limit for replacement of E with sport drinks. Mean E loss was determined from 13 studies, with +1SDresulting in a hypothetical range for E losses. Correction for net absorption resulted in an upper limit of electrolyte replacement. It is suggested that the E levels in sport rehydration drinks should not exceed the upper limit of the range given.

scholarly journals The nature of atmospherics. VI

1939 ◽  
Vol 171 (946) ◽  
pp. 285-313 ◽  
Keyword(s):  
Time Scale ◽  
High Frequency ◽  
Potential Gradient ◽  
The Other ◽  
Wave Form ◽  
Predominant Frequency ◽  
Photographic Recording ◽  
Upper Limit ◽  
Open Time ◽  
Rapid Changes

In Paper V of this series (Watson Watt, Herd and Lutkin 1937) the results of the early photographic recording of the wave form of atmospherics have been described. It was shown that these rapid changes of the atmospheric potential gradient produced by thunderstorm discharges at quite long distances consist of two distinct oscillatory trains, one having a predominant frequency of the order of 10 kc./sec. and the other about 0.5 kc./sec. The photographic resolution attainable at the time made it impossible to analyse in detail the higher frequency oscillations, and the present paper describes the results of recording on a much more open time scale. This involved the development of a drum camera which could be operated at speeds up to 20 r.p.s. giving film speeds up to 20 m./sec. as compared with 2 m./sec. which was the upper limit attainable by the earlier methods. Two series of observations are discussed. One was made during the autumn of 1934, and consisted of records of atmospherics originating at considerable distances from the receivers. This series, which served to test the methods for improved resolution of the wave form, confirmed the nature of the high-frequency portion of that wave form and emphasized the need for similar records of the atmospherics from storms occurring near to one of the receivers. Such records were obtained in the second series made during the summer of 1936.

Detection of copper precipitates in Cu2O by NMR

1985 ◽  
Vol 63 (3) ◽  
pp. 397-401 ◽  
Author(s):  
D. G. Hughes ◽  
S. Mohanty ◽  
L. Pandey ◽  
F. L. Weichman
Keyword(s):  
Metallic Copper ◽  
Type A ◽  
Significant Loss ◽  
Skin Depth ◽  
The Other ◽  
Particle Sizes ◽  
Upper Limit ◽  
Type C ◽  
Nmr Signals ◽  
Depth Effects

Weak 63Cu NMR signals characteristic of metallic copper have been found in three type-C Cu2O crystals, but not in types A and B. This is in accordance with presently accepted models of these materials. The resonances are asymmetric in two of the three crystals. One shows skin-depth effects, implying particle sizes [Formula: see text], the other shows some second-order quadrupole broadening, presumably associated with strains or surface effects. From the areas under the absorption curves, mass concentrations of copper precipitates ranging from 0.023 to 0.034% are deduced. However, the smallest value is found from an asymmetric resonance where significant loss of signal must have occurred. The data are not inconsistent with a concentration of about 0.034% for all three crystals. For type-A and -B material, an upper limit of 3–7 ppm can be placed on the concentration, depending on the assumed contribution of the satellites to the resonance. 63Cu resonances associated with the transitions between Zeeman-split ± 1/2 quadrupole states in Cu2O were troublesome, since they overlapped the metal resonance at many sample orientations. Strong Cu2O signals, observed at one orientation, indicated that part of the crystal must have grown with {111} faces.

Buckling Criteria for Torispherical Heads Under Internal Pressure

2000 ◽  
Vol 123 (3) ◽  
pp. 318-323 ◽  
Author(s):  
Clarence D. Miller
Keyword(s):  
Internal Pressure ◽  
Compressive Stress ◽  
Compressive Strain ◽  
Model Tests ◽  
Accurate Prediction ◽  
The Other ◽  
Upper Limit ◽  
Asme Code ◽  
Section Viii

The results of 190 model tests and failures of five torispherical heads in service are analyzed in this paper. Seventy-two of the heads failed by buckling of the knuckle and 17 of the heads were pressurized until the heads failed by bursting or by rupture of the crown. The test pressures were compared with the design pressures obtained from ASME Section VIII, Divs. 1 and 2 rules which are limited to heads with L/t⩽500, ASME Code Cases 2260 and 2261 rules which are limited to heads with L/t⩽500, the French Code CODAP rules which apply to heads with D/t ratios up to 1000, and the ECCS rules which apply to heads with D/t ratios up to 1250. The margins of safety were found to vary widely for all of the rules. A new set of rules has been developed for design of torispherical heads under internal pressure. The rules are applicable to heads with L/t or D/t ratios up to 2500 and apply to all ASME Code materials. The rules are based on three criteria: failure of the knuckle by buckling, limiting the maximum compressive strain in the knuckle to prevent gross distortions, and failure of the crown by bursting. The proposed rules provide a more accurate prediction of the buckling pressure and a more consistent upper limit on the compressive stress in the knuckle than any of the other rules considered in this paper.

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