scholarly journals The ways and means of Express-diagnostics of plants for protected ground

2019 ◽  
pp. 4-7
Author(s):  
Elena Mikhailovna Basarygina ◽  
Evgenia Alexandrovna Zakharova ◽  
Alexander Vladimirovich Shershnev ◽  
Elena Olegovna Gorshkova ◽  
Denis Viktorovich Davydov
Keyword(s):  
Absorption Spectrum ◽  
Arithmetic Mean ◽  
Rapid Diagnosis ◽  
Mineral Wool ◽  
Plant Leaves ◽  
Mean Values ◽  
Experimental Variant ◽  
Carotenoid Absorption ◽  
Chlorophyll Absorption ◽  
Production Conditions

The article deals with the results of studies related to the testing of the proposed method of rapid diagnosis of plants conducted in the production conditions of Agrocomplex "Churilovo". It was found that the absorption spectrum of the leaf apparatus of cucumber plants in the control variant (substrate – mineral wool) and the experimental variant (substrate - agroperlite) differed insignificantly: the arithmetic mean values of chlorophyll absorption in the control and experiment were 3,668 and 3,772, respectively; carotenoid absorption - 3,560 and 3,403; cytochrome absorption - 2,681 and 2,645, respectively. There were minor differences in the content of micro - and macronutrients in plant leaves and yield. It is revealed that the proposed method of rapid diagnosis, based on the analysis of the absorption spectra of the sheet apparatus, allows to obtain results comparable to the results of chemical analysis and yield assessment, and can be used to diagnose the condition of plants.

scholarly journals Effect of Kale Cultivation Conditions on Biosynthesis of Xanthophylls

2012 ◽  
Vol 1 (4) ◽  
pp. 74 ◽  
Author(s):  
Magdalena Ligor ◽  
Boguslaw Buszewski
Keyword(s):  
Dry Mass ◽  
Saline Stress ◽  
Plant Leaves ◽  
Outdoor Cultivation ◽  
Cultivation Conditions ◽  
Mean Values ◽  
Plant Cultivation ◽  
Quantitative Analyses ◽  
Uv Lamp

<p>Conditions of plant cultivation directly influence the chlorophyll and carotenoid pigments concentrations. The aim of investigations was the determination of lutein in kale (<em>Brassica oleracea</em> L. var. <em>acephala</em>) upon various cultivation conditions including: low and high temperature (overnight and daytime in the greenhouse the temperature was 12 ± 2C and in the laboratory the temperature was 22 ± 2C), lack of water (some plants were watered only one time weekly), saline stress (5% of sodium chloride added to irrigation water; watering two times weekly was applied), as well as UV radiation of plants by means of UV lamp (lambda = 254 nm; suitable to UVC solar radiation; duration 4 h per day). Three months old cuttings were taken and next mentioned cultivation conditions were applied during one month. Moreover, the outdoor cultivation of kale cuttings was performed. Qualitative and quantitative analyses of plant extracts were made by use of HPLC-UV-VIS-MS technique. Mean values for lutein accumulation as a function of dry mass (mg/g) in leaves of kale have been presented. Obtained results show maximum xantophylls (lutein) concentration occur in fully developed plant leaves of kale for red kale 2.04 ± 0.15 and green kale 1.10 ± 0.09 mg/g respectively.</p>

Chemical Analyses of Middle and Upper Pennsylvanian Coals from Southeastern Kansas

1997 ◽  
pp. 43-65
Author(s):  
Lawrence L. Brady ◽  
Joseph R. Hatch
Keyword(s):  
Bituminous Coal ◽  
Geometric Mean ◽  
Zinc Content ◽  
Mining Area ◽  
Volatile Matter ◽  
Arithmetic Mean ◽  
Cadmium Content ◽  
Chemical Analyses ◽  
Mean Values ◽  
Maximum Value

Elemental and chemical analyses and physical tests were conducted on 36 samples of Middle and Upper Pennsylvanian coals from southeastern Kansas. Concentrations of 35 minor and trace elements in these coals were statistically compared with concentrations in coals of similar rank and age from other areas in the western region of the Interior Coal Province, showing that Kansas coals have significantly higher concentrations of copper, arsenic, and lead. The zinc content in Kansas coal samples ranges from 160 to 51,000 ppm (whole-coal basis), the maximum value being the highest zinc value reported for U.S. coals. Cadmium content also has an extreme range, from less than 1.0 to 160 ppm (whole-coal basis), the maximum value being one of the highest cadmium values reported in U.S. coals. The apparent ranks of these coal samples range from high-volatile B to high-volatile A bituminous coal. Most samples of Middle Pennsylvanian coals from the major coal-mining area in Bourbon, Crawford, and Cherokee counties are high-volatile A bituminous coal. Arithmetic mean values for proximate analyses of coals (as-received basis; n = 25) show these coals to be 15.5% ash, 35.3% volatile matter, 45.9% fixed carbon, and 3.3% moisture and to have a heat of combustion of 11,910 Btu/lb. Arithmetic mean values for ultimate analyses of the coals show these coals to be 4.9% hydrogen, 65.3% carbon, 1.2% nitrogen, 5.5% sulfur, and 7.7% oxygen. The geometric mean values of these Kansas coals are 3.03% pyritic sulfur, 1.25% organic sulfur, and 0.2% sulfate sulfur.

Fracture Parameters of Concrete from Drill-Core Specimens from Objects at the Transgas Gas Control Center

2019 ◽  
Vol 292 ◽  
pp. 85-90
Author(s):  
Tomáš Majda ◽  
Petr Daněk ◽  
Petr Frantík ◽  
Hana Šimonová ◽  
Pavla Rovnaníková ◽  
...  
Keyword(s):  
Arithmetic Mean ◽  
Mean Values ◽  
Control Center ◽  
Three Point Bending ◽  
Static Modulus ◽  
Chevron Notch ◽  
Fracture Tests ◽  
Gas Control ◽  
Static Modulus Of Elasticity ◽  
Specific Fracture

This paper presents the results of fracture tests conducted on nine concrete specimens from drill-cores taken from three selected objects located at the former Transgas Gas Control Center in Prague. The specimens were provided with a chevron notch before being tested in three-point bending. The evaluation included arithmetic mean values and basic statistics for the static modulus of elasticity, fracture toughness and specific fracture energy of the assessed concrete specimens.

scholarly journals Survey of indoor radon (Rn-222) entry and concentrations in different types of building in Kalisz, Poland

2020 ◽  
Vol 326 (2) ◽  
pp. 1299-1306
Author(s):  
H. Bem ◽  
S. Janiak ◽  
B. Przybył
Keyword(s):  
Residential Buildings ◽  
Indoor Radon ◽  
Local Population ◽  
Mean Value ◽  
Arithmetic Mean ◽  
Mean Values ◽  
High Rise ◽  
Different Types ◽  
Average Effective Dose ◽  
Calculated Average

Abstract Indoor radon (222Rn) was surveyed in a total of 141 individual houses and apartments used precalibrated passive PicoRad Detectors. The radon activity in the soil gas around the dwellings was simultaneously measured. The arithmetic mean values of indoor radon concentrations for detached houses, old buildings (up to four-stories), prefabricated blocks of flats (mostly five stories) and high-rise residential buildings (10-stories) were:, 70.9; 46.5; 38.4, and 56.6 Bq m−3, respectively. The average arithmetic mean value for all measured rooms equals 51.8 Bq m−3. The calculated average effective dose from indoor radon for the local population was equal to 2.2 mSv.

scholarly journals Some Mean Values Related to the Quasi-Arithmetic Mean

2000 ◽  
Vol 252 (1) ◽  
pp. 167-176 ◽  
Author(s):  
Jeong Sheok Ume ◽  
Young-Ho Kim
Keyword(s):  
Arithmetic Mean ◽  
Mean Values

scholarly journals Experimental study of the influence of family structure on the development of creativity of children of preschool age

HUMANITARIUM ◽  
2021 ◽  
Vol 44 (1) ◽  
pp. 59-72
Author(s):  
Iryna Zozulia ◽  
Yaroslava Vasylkevych
Keyword(s):  
Family Structure ◽  
Mean Value ◽  
Arithmetic Mean ◽  
Preschool Age ◽  
Family Type ◽  
Mean Values ◽  
Number Of Children ◽  
The Family ◽  
Large Families ◽  
General Indicator

The article presents theoretical substantiation and empirical research of the problem of the influence of the family structure on the development of creativity of children of preschool age. The relationship between creativity and family type, number of children in the family, birth order, and intervals between births is analyzed. Peculiarities of influence of family structure (by the number of children) for the development of creativity of children of preschool age are researched. The absence of significant differences in partial (productivity, flexibility, originality) and a general indicator of verbal creativity of children with one child, small and large families has been experimentally established. Research of figurative creativity allowed to identify significant differences in partial indicators of productivity and originality, and the general indicator of figurative creativity: the highest arithmetic mean values are determined in the group of children from small families, and the lowest - in the group of children from large families. In children brought up in single children families, the highest arithmetic mean value is revealed by the partial indicator of the name, and the lowest - in children from large families. In children of preschool age from single, small, and large families no significant differences by partial indicators of the development and resistance to the closure were found. The heterogeneity of verbal and figurative creativity structure is determined in children of preschool age in all types of families. Significant differences were found in the general indicators of creativity: the highest arithmetic mean value was determined in the group of children from small families, and the lowest - in children from large families. Conclusions are made that children from small families are the most creative, and children from large families - the least.

scholarly journals Alpha activity emitted from leaves and roots of beetroot plant planted in enhanced soil with fertilizers

2020 ◽  
Vol 8 (2) ◽  
pp. 50
Author(s):  
Sahar Ahmed Amin
Keyword(s):  
Organic Fertilizer ◽  
Track Detector ◽  
Alpha Activity ◽  
Plant Leaves ◽  
Nuclear Track Detector ◽  
Lower Face ◽  
Mean Values ◽  
Fertilized Soil ◽  
Upper Face ◽  
Α Particles

This study is to assesses radioactive materials transported to the beetroot plants grow in different fertilized soil. Equivalent weights of fertilizers were added to the soil prior the plantation. The alpha track densities were estimated utilizing solid state nuclear track detector (SSNTDs), CR-39. The obtained results show that alpha track densities in Beetroot plants in the lower and upper sides of plant leaves were varied from 67.62 Tr.cm−2 to 101.83 Tr.cm−2 and from 45.35 Tr.cm−2 to 94.67 Tr.cm−2 with mean values of 89.96 Tr.cm−2 and 68.48 Tr.cm−2, respectively. Alpha track densities were also measured in the samples of the enhanced plantation soil with fertilizers and in the whole parts of the Beetroot plant which were planted in these soils. These values were compared with alpha track densities obtained from fertilizer samples in the previous studies. The lower face of leaves gives higher α-particles activity than that obtained from the upper face. As well as, the alpha activity from the plants planted in soils enhanced with phosphate compost was found greater as contrast with that planted in a soil enhanced with organic fertilizer. The utilization of organic fertilizer don't cause much risks like contrasted with phosphate fertilizers. Therefore, the alpha activity depends on the nature of fertilizers added to the soil.   

scholarly journals The Muscular Component in the Body of Girls of Ddifferent Constitutional Groups

2018 ◽  
Vol 7 (2) ◽  
pp. 18-22
Author(s):  
N. T. Alexeeva ◽  
I. V. Pogonchenkova ◽  
E. A. Rozhkova ◽  
S. V. Klochkova ◽  
D. B. Nikityuk ◽  
...  
Keyword(s):  
Confidence Intervals ◽  
Muscle Mass ◽  
Statistical Processing ◽  
Physical Development ◽  
Arithmetic Mean ◽  
Individual Variability ◽  
The Body ◽  
Mean Values ◽  
The Absolute ◽  
The Individual

The aim of the study - to analyze the content of the muscular component of the body in girls of 16-20 years old belonging to different constitutional groups. Material and methods. 729 girls (400 at the age of 16-17 years, and 329 at the age of 18-20 years) were explored by the method of complex anthropometry and bioimpedance. Statistical processing of digital materials was to calculate the arithmetic mean values, their errors. The evaluation of the reliability of differences in arithmetic mean values was carried out by the method of confidence intervals. Results. Girls of leptosomic groups of the constitutions are identified in 20.5% of cases, mesosomic group - in 34,2% of cases, megalosomic group at 35,7% of cases, the indeterminate group and in 9,6% of cases. The obtained data on the content of muscle mass indicate that the studied indicators significantly depend on the belonging of girls to a particular constitutional group. The absolute content of muscular components of the girls of leptosomic group of the constitution is substantially less than women of other constitutional groups. Conclusion. The study received a quantitative of girls of different constitutional groups in the studied population; obtained data on the characteristics of the absolute and the percentage of muscular component of the body depending on the type of constitution, allow us to conclude about the individual variability of the severity of these indicators and the data obtained can be used to create the passport's physical development in contemporary conditions.

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