57 research outputs found
TRAUMATIC DATA BANK "SEVERE HEAD INJURY"
The authors present a traumatic data bank for patients with severe head injury based on Foxpro software. The program product is characterized by simple management of the data bank. All parameters are standardized (up to 8 answers) and the operator chooses the true one. Main advantages of the the product are: good design, help file, possibility for actualization of the parameters and thus at the stage of data collecting to select the most informative of them. The primary deffect of the data bank consists in the absent possibility to use Internet. Next stage in the development of the system is the adaptation of hypertext transmission protocol. By this way the system will make use of Internet and data collection from any point will be no problem
ULF fluctuations of the geomagnetic field and ionospheric sounding measurements at low latitudes during the first CAWSES campaign
We present an analysis of ULF geomagnetic field
fluctuations at low latitudes during the first CAWSES campaign
(29 March–3 April 2004). During the whole campaign,
mainly in the prenoon sector, a moderate Pc3-4 pulsation activity
is observed, clearly related to interplanetary upstream
waves. On 3 April, in correspondence to the Earth’s arrival of
a coronal mass ejection, two SIs are observed whose waveforms
are indicative of a contribution of the high-latitude
ionospheric currents to the low-latitude ground field. During
the following geomagnetic storm, low frequency (Pc5) waves
are observed at discrete frequencies. Their correspondence
with the same frequencies detected in the radial components
of the interplanetary magnetic field and solar wind speed suggests
that Alfv´enic solar wind fluctuations may act as direct
drivers of magnetospheric fluctuations. A cross-phase
analysis, using different pairs of stations, is also presented
for identifying field line resonant frequencies and monitoring
changes in plasmaspheric mass density. Lastly, an analysis
of ionospheric vertical soundings, measured at the Rome
ionosonde station (41.8 N, 12.5 E), and vertical TEC measurements
deduced from GPS signals within an European
network shows the relation between the ULF resonances in
the inner magnetosphere and thermal plasma density variations
during geomagnetically quiet conditions, in contrast to
various storm phases at the end of the CAWSES campaign
Local and Semilocal Convergence of Wang-Zheng’s Method for Simultaneous Finding Polynomial Zeros
In 1984, Wang and Zheng (J. Comput. Math. 1984, 1, 70–76) introduced a new fourth order iterative method for the simultaneous computation of all zeros of a polynomial. In this paper, we present new local and semilocal convergence theorems with error estimates for Wang–Zheng’s method. Our results improve the earlier ones due to Wang and Wu (Computing 1987, 38, 75–87) and Petković, Petković, and RanÄŤić (J. Comput. Appl. Math. 2007, 205, 32–52)
Local and Semilocal Convergence of Wang-Zheng’s Method for Simultaneous Finding Polynomial Zeros
In 1984, Wang and Zheng (J. Comput. Math. 1984, 1, 70−76) introduced a new fourth order iterative method for the simultaneous computation of all zeros of a polynomial. In this paper, we present new local and semilocal convergence theorems with error estimates for Wang−Zheng’s method. Our results improve the earlier ones due to Wang and Wu (Computing 1987, 38, 75−87) and Petković, Petković, and RanÄŤić (J. Comput. Appl. Math. 2007, 205, 32−52)
PRODUCTIVITY OF THE PLANTS FOR LATE FIELD TOMATO PRODUCTION DEPENDING ON THE AGE AND PLANTING AREA OF THE SEEDLING
The main aim of this study was to be established productivity of tomato plants, grown in conditions of late field production, depending of age and planting area of the seedling. The experiments were carried out during the period 2011 - 2013 on experimental field, Department of Horticulture at the Agriculture University – Plovdiv with cultivar Opal F1. The variants with 20-25, 30-35 and 40-45 day seedlings cultivated in containers with 40, 66 and 104 cells and planting area respectively 44,28,17cm2, were tested. As a control was used 20-25 day seedlings, grown in a transplanting bed and planting area 26-28 cm2 per plant (350-380 plant / m2). The yield of standard fruits was the highest in variant with 20-25 day seedlings, grown in containers with 66 cells. There were not significantly different in the quality parameters of the fruits during harvesting stage
EFFECT OF THE COMPOSITION OF SEEDLINGS MIXTURE ON THE PHYSIOLOGICAL BEHAVIOR AND PHOTOSYNTHETIC PRODUCTIVITY OF TOMATO PLANTS
The purpose of this investigation was to be established the influence of the components of the seedling mixture on the physiological behaviors and the photosynthetic productivity of tomato plants, during the vegetative growth stage after planting, under the conditions of late field production. The variants with additives of different components of organic and organo-mineral origin to the standard peat-pearlitic mixture and peat-pearlitic mixture with absorbent (TPSA) were tested. It was found that the using of a peat-pearlitic mixture with absorbent + additive was a precondition for a greater physiological potential of the plants during the vegetative growth stage. The parameters of the leaf gas exchange, biological yield and the photosynthetic productivity reached their highest values in the use of TPSA and the addition of organic fertilizer Boneprot 2%
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