Temat: root methods - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Prediction of wheat grain yield by measuring root electrical capacitance at anthesis
Autorzy:: Cseresnyes, I.
Miko, P.
Kelemen, B.
Fuzy, A.
Paradi, I.
Takacs, T.
Powiązania:: https://bibliotekanauki.pl/articles/2083056.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: aboveground biomass
intercropping
nonintrusive
root methods
saturation electrical capacitance
root system
size
Opis:: This methodological study evaluated the efficiency of predicting aboveground biomass and grain yield in fieldgrown winter wheat by measuring the saturation root electrical capacitance at anthesis. Three cultivars were grown over a threeyear period as sole crops and intercropped with winter pea at halved wheat density. The root capacitance readings were converted into saturation root electrical capacitance using the relevant soil water content, according to an empirical function. At plant scale, saturation root electrical capacitance at anthesis showed a significant (p < 0.001) linear regression with the total aboveground biomass (R2: 0.653-0.765) and grain yield (R2: 0.585-0.686) at maturity for each cultivar. At stand scale, both the mean saturation root electrical capacitance and shoot dry mass at anthesis and grain yield varied over the years, and were consistently higher for the intercrops compared to the sole crops. The relative increase in saturation root electrical capacitance due to intercropping corresponded with the changes in shoot dry mass and grain yield, especially in dry years. Saturation root electrical capacitance was significantly correlated with shoot dry mass (R2: 0.714-0.899) and grain yield (R2: 0.742-0.877) for each cultivar across all cropping systems and years. In conclusion, by mitigating the soil water content effect, the measurement of saturation root electrical capacitance at anthesis is adequate to forecast grain yield and cultivar response to a changing environment.
Źródło:: International Agrophysics; 2021, 35, 2; 159-165
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Numerical investigation of root canal irrigation adopting innovative needles with dimple and protrusion
Autorzy:: Li, P.
Zhang, D.
Xie, Y.
Lan, J.
Powiązania:: https://bibliotekanauki.pl/articles/307257.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: dimple
protrusion
innovative needles
numerical simulation
passive flow control methods
root canal irrigation
wychylenie zębów
symulacja komputerowa
kanał zębowy
Opis:: As important passive flow control methods, dimples and protrusions have been successfully implemented via geometric modifications to manipulate flow fields to get a desired flow parameters enhancement. In this research, two novel needles were proposed based on a prototype by means of the dimple and protrusion, and flow patterns within a root canal during final irrigation with these needles were numerically investigated. The calculation cases consistent with the clinically realistic irrigant flow rates, which are 0.02, 0.16 and 0.26 mL s–1 are marked as case A, B and C, respectively. The characteristic parameters to estimate irrigation efficiency, such as shearing effect, mean apical pressure, irrigation replacement and fluid agitation, were compared and the optimal geometry in every calculation case was obtained. As shown from the results, flow rates and needle geometries were the causes of irrigation parameters variations. The sum of shear stress, irrigation replacement and fluid agitation were equal in the low flow rate case A, however, the needle with a protrusion on its tip had advantages in the three irrigation characteristic parameters above in calculation case B, and the needle with a dimple on its tip had advantages in calculation case C. Furthermore, the needles proposed did not give rise to the risk of irrigant extrusion. These needles can be better choices at larger flow rates. Therefore, needle geometry optimizations utilizing passive flow control methods are worthy to be investigated in the root canal irrigation enhancement.
Źródło:: Acta of Bioengineering and Biomechanics; 2013, 15, 1; 43-50
1509-409X
2450-6303
Pojawia się w:: Acta of Bioengineering and Biomechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Wykorzystanie narzędzi i metod doskonalenia jakości do analizy i rozwiązania problemu związanego z bezpieczeństwem pracy
The use of quality improvement tools and methods to analyze and solve the problem related to work safety
Autorzy:: Dolniak, Mateusz
Knop, Krzysztof
Powiązania:: https://bibliotekanauki.pl/articles/1445335.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:: BHP
narzędzia doskonalenia jakości
metody doskonalenia jakości
analiza przyczyn źródłowych
doskonalenie
OHS
quality improvement tools
quality improvement methods
root causes analysis
improvement
Opis:: Artykuł przedstawia przykład wykorzystania wybranych narzędzi i metod doskonalenia jakości w celu analizy i rozwiązania problemu związanego z bezpieczeństwem pracy w zakładzie z branży piwowarskiej. Szczegółowej analizie poddano problem - przygniecenie kończyny górnej, który okazał się być krytyczny ze względu na częstość występowania po analizie z wykorzystaniem diagramu Pareto-Lorenza. Wykorzystano diagram Ishikawy w celu analizy przyczyn tego problemu oraz pogrupowania tych przyczyn do kategorii 5M+E. Z użyciem metody 5 x dlaczego wskazano na przyczynę źródłową tego problemu tj. pośpiech i nieuwagę pracowników. Zaproponowano wykorzystanie rozwiązań Poka-Yoke z metody ostrzegania - zastosowanie czujnika dźwiękowego w celu zabezpieczenie przed krytycznym zdarzeniem wypadkowym. Artykuł udowadnia, że zastosowanie narzędzi i metod jakościowych do obszaru bhp może przyczynić się do ograniczenia działania czynników niebezpiecznych, szkodliwych i uciążliwych na pracowników, a tym samym poprawy poziomu ich bezpieczeństwa pracy.
The article presents an example of the use of selected tools and methods of quality improvement in order to analyze and solve the problem related to work safety in a brewing industry plant. The problem was analyzed in detail - crushing the upper limb, which turned out to be critical due to the frequency of occurrence after the analysis using the Pareto-Lorenz diagram. The Ishikawa diagram was used to analyze the causes of this problem and group them into the 5M + E category. By using the 5 x method the root cause of this problem was identified - haste and inattention of employees. It was proposed to use Poka-Yoke solutions from the warning method - the use of a sound sensor in order to protect against a critical accident event. The article proves that the use of quality tools and methods in the area of occupational health and safety may contribute to limiting the impact of hazardous, harmful and burdensome factors on employees, and thus to improve their level of work safety.
Źródło:: Archiwum Wiedzy Inżynierskiej; 2020, 5, 2; 12-17
2544-2449
Pojawia się w:: Archiwum Wiedzy Inżynierskiej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Applying information technologies while studying “Numerical Methods and Computer Simulation” section of the “Computer Science and ICT” Middle School Program
Autorzy:: MEDVEDEV, Yuri
NIKOLAEVA, Irina
DAVLETYAROVA, Ekaterina
Powiązania:: https://bibliotekanauki.pl/articles/456730.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Rzeszowski
Tematy:: numerical methods
computer models
computer experiment
the Information Technology
Department of the real roots of the equation with one variable
continuity
monotony
accurate root of the equation
Opis:: The article describes the experience of using information technologies in the study section “Numerical Methods and Computer Simulation” in the subject “Informatics and ICT” primary school. The aims and objectives of the study material in this section on basic and core stages of continuous study of computer science. Consider some examples of the use of information technology in the study of educational material theme “Approximate methods for solving equations with one variable”. To illustrate the results of the research function y = f (x) for solving the equation f (x) = 0, and examples of opportunities for Mathcad charting and determine the roots of the equation. Considered VBA code refinement root of the equation f (x) = 0 by bisection of the interval for the table processor MS Excel. The article summarized the results of testing some educational material section “Numerical Methods and Computer Simulation” in the schools of the city of Vladimir. In the study of educational material in this section, students have the opportunity to conduct an experiment using a computer programming systems, spreadsheets, mathematical computer-aided design Mathcad and other computer software, select the appropriate options, analyze dependencies, predict outcomes, to conduct a graphical interpretation of the results. This contributes to a deeper understanding of the essence of numerical methods and their practical value, focuses on the clever use of computer software applications, and enriches the students’ new ways of solving problems.
Źródło:: Edukacja-Technika-Informatyka; 2014, 5, 2; 413-418
2080-9069
Pojawia się w:: Edukacja-Technika-Informatyka
Dostawca treści:: Biblioteka Nauki

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