scholarly journals Analysis of strength ratio of different hop strings

2012 ◽  
Vol 58 (No. 4) ◽  
pp. 148-154
Author(s):  
P. Heřmánek ◽  
A. Rybka ◽  
I. Honzík ◽  
L. Vent ◽  
B. Jošt ◽  
...  
Keyword(s):  
Field Test ◽  
Measuring Equipment ◽  
Field Tests ◽  
Vegetation Period ◽  
Strength Ratio ◽  
Ideal State ◽  
Laboratory Conditions ◽  
Pulling Force ◽  
Annealed Wire ◽  
The Ideal

In plant-growing, minimization of impurities in the final product plays a more and more important role. One of the risky places that can influence the final purity of granules in hop growing is the way of hop strings hanging on the trellis supporting wire. The ideal state is when hop-field supporting wires stay clean and without any attachments after the hop vines had been pulled down. The article deals with different variants of hop strings hanging, a description of the measuring equipment, and a measurement of the pulling force itself at a field test, and a realization of break tests in laboratory conditions with both new and used wires and twines. Two-year results of field tests proved advantageousness of the hop string hanging variant in combination of a black annealed wire of 1.06 mm in diameter with a polypropylene twine of strength labelled as 12,500 in the form of a simple attachment, as well as variants combining the same wire and a jute twine labelled 2,200 × 2 in the form of a double attachment. Other variants using attachments made of jute or sisal are unsuitable due to a large number of fallen hopvines in vegetation period. Paper attachments will be put to further tests.  

The Republic

2019 ◽  
pp. 205-229
Author(s):  
Dominic Scott
Keyword(s):  
Political Theory ◽  
Left Behind ◽  
Ideal State ◽  
The Republic ◽  
Individual Justice ◽  
The Individual ◽  
Political Right ◽  
First Time ◽  
The Ideal

This chapter presents a reading of Plato’s Republic. The Republic is among Plato’s most complex works. From its title, the first-time reader will expect a dialogue about political theory, yet the work starts from the perspective of the individual, coming to focus on the question of how, if at all, justice contributes to an agent’s happiness. Only after this question has been fully set out does the work evolve into an investigation of politics—of the ideal state and of the institutions that sustain it, especially those having to do with education. But the interest in individual justice and happiness is never left behind. Rather, the work weaves in and out of the two perspectives, individual and political, right through to its conclusion. All this may leave one wondering about the unity of the work. The chapter shows that, despite the enormous range of topics discussed, the Republic fits together as a coherent whole.

Early Age Performance of Continuously Reinforced Concrete Pavement with Different Types of Aggregate

1997 ◽  
Vol 1568 (1) ◽  
pp. 35-43
Author(s):  
Yoon-Ho Cho ◽  
Terry Dossey ◽  
B. Frank Mccullough
Keyword(s):  
Reinforced Concrete ◽  
Field Test ◽  
Field Tests ◽  
Concrete Pavement ◽  
Crack Spacing ◽  
Winter Period ◽  
Thermal Coefficient ◽  
Curing Methods ◽  
Pavement Construction ◽  
New Variables

The effect of coarse aggregate on pavement performance has been attributed to the volume of aggregate used in pavement construction. The different patterns of crack development for limestone (LS) and siliceous river gravel (SRG) are a typical example of aggregate-induced variable performance in continuously reinforced concrete pavement (CRCP). An attempt was made to find a reasonable solution for pavements with SRG. As a way to solve the performance problem observed from the SRG pavement, a blended aggregates mixture was suggested. Laboratory and field tests were performed to check the feasibility of their application in pavements. From the laboratory test, a 50:50 blending ratio was suggested after considering the effect on tensile strength and thermal coefficient of expansion. Field test sections were also constructed to verify previous performance observations for the two aggregates and to provide performance data for new variables such as blended aggregates and special curing methods. Unexpectedly, the blended mixture did not improve the performance of SRG pavement; rather it experienced worse cracking than SRG alone. A controlled experiment with additional field test sections is needed to verify or disprove this finding. The only definitive finding was that selection of aggregate in the concrete pavement is a vital consideration for the design of the pavement. The CRCP8 analytical program reasonably predicted crack spacing for both SRG and LS pavements, predicting mean crack spacing of 0.99 m (3.25 ft) for SRG and 1.98 m (6.41 ft) for the limestone. These values are somewhat below the actual spacing observed at 100 days. Data collected after the first winter period will be required to calibrate the program.

Numerical simulation and field test study of desulfurization wastewater evaporation treatment through flue gas

2014 ◽  
Vol 70 (7) ◽  
pp. 1285-1291 ◽  
Author(s):  
Jia-jia Deng ◽  
Liang-ming Pan ◽  
De-qi Chen ◽  
Yu-quan Dong ◽  
Cheng-mu Wang ◽  
...  
Keyword(s):  
Field Test ◽  
Flue Gas ◽  
Cfd Simulation ◽  
Electrostatic Precipitator ◽  
Negative Impact ◽  
Positive Impact ◽  
Field Tests ◽  
Gas Temperature ◽  
Simulation Results ◽  
Desulfurization Wastewater

Aimed at cost saving and pollution reduction, a novel desulfurization wastewater evaporation treatment system (DWETS) for handling wet flue gas desulfurization (WFGD) wastewater of a coal-fired power plant was studied. The system's advantages include simple process, and less investment and space. The feasibility of this system has been proven and the appropriate position and number of nozzles, the spray droplet size and flue gas temperature limitation have been obtained by computational fluid dynamics (CFD) simulation. The simulation results show that a longer duct, smaller diameter and higher flue gas temperature could help to increase the evaporation rate. The optimal DWETS design of Shangdu plant is 100 μm droplet sprayed by two nozzles located at the long duct when the flue gas temperature is 130 °C. Field tests were carried out based on the simulation results. The effects of running DWETS on the downstream devices have been studied. The results show that DWETS has a positive impact on ash removal efficiency and does not have any negative impact on the electrostatic precipitator (ESP), flue gas heat exchanger and WFGD. The pH values of the slurry of WFGD slightly increase when the DWETS is running. The simulation and field test of the DWETS show that it is a feasible future technology for desulfurization wastewater treatment.

scholarly journals Estimation of Outdoor PM2.5 Infiltration into Multifamily Homes Depending on Building Characteristics Using Regression Models

2021 ◽  
Vol 13 (10) ◽  
pp. 5708
Author(s):  
Bo-Ram Park ◽  
Ye-Seul Eom ◽  
Dong-Hee Choi ◽  
Dong-Hwa Kang
Keyword(s):  
Regression Analysis ◽  
Correlation Analysis ◽  
Field Test ◽  
Outer Surface ◽  
Regression Models ◽  
Field Tests ◽  
Test Results ◽  
Correlation And Regression Analysis ◽  
Building Characteristics ◽  
Pm2.5 Concentration

The purpose of this study was to evaluate outdoor PM2.5 infiltration into multifamily homes according to the building characteristics using regression models. Field test results from 23 multifamily homes were analyzed to investigate the infiltration factor and building characteristics including floor area, volume, outer surface area, building age, and airtightness. Correlation and regression analysis were then conducted to identify the building factor that is most strongly associated with the infiltration of outdoor PM2.5. The field tests revealed that the average PM2.5 infiltration factor was 0.71 (±0.19). The correlation analysis of the building characteristics and PM2.5 infiltration factor revealed that building airtightness metrics (ACH50, ELA/FA, and NL) had a statistically significant (p < 0.05) positive correlation (r = 0.70, 0.69, and 0.68, respectively) with the infiltration factor. Following the correlation analysis, a regression model for predicting PM2.5 infiltration based on the ACH50 airtightness index was proposed. The study confirmed that the outdoor-origin PM2.5 concentration in highly leaky units could be up to 1.59 times higher than that in airtight units.

scholarly journals Traction performance simulation for mechanical front wheel drive tractors: towards a practical computer tool

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
A. Battiato ◽  
E. Diserens ◽  
L. Sartori
Keyword(s):  
Field Tests ◽  
Front Wheel ◽  
Arable Soils ◽  
Wheel Load ◽  
Computer Tool ◽  
Performance Simulation ◽  
Wheel Drive ◽  
Silty Loam ◽  
Pulling Force ◽  
Drawbar Pull

An analytical model to simulate the traction performance of mechanical front wheel drive MFWD tractors was developed at the Agroscope Reckenholz-Tänikon ART. The model was validated via several field tests in which the relationship between drawbar pull and slip was measured for four MFWD tractors of power ranging between 40 and 123 kW on four arable soils of different texture (clay, clay loam, silty loam, and loamy sand). The pulling tests were carried out in steady-state controlling the pulling force along numerous corridors. Different configurations of tractors were considered by changing the wheel load and the tyre pressure. Simulations of traction performance matched experimental results with good agreement (mean error of 8% with maximum and minimum values of 17% and 1% respectively). The model was used as framework for developing a new module for the excel application TASCV3.0.xlsm, a practical computer tool which compares different tractor configurations, soil textures and conditions, in order to determine variants which make for better traction performance, this resulting in saving fuel and time, i.e. reducing the costs of tillage management.

scholarly journals NEGARA DAN KEPEMIMPINAN DALAM PEMIKIRAN ALFARABI

2017 ◽  
Vol 14 (2) ◽  
pp. 283
Author(s):  
Imam Sukardi
Keyword(s):  
Political Thought ◽  
The State ◽  
Human Organism ◽  
Ideal State ◽  
Political Concept ◽  
The Social ◽  
Original Works ◽  
Universal Values ◽  
The Government ◽  
The Ideal

The political concept of Alfarabi is derivated from the concept of Platonic, Aristotelian, and Islam. The ideal state is the state which is elaborated the universal values of humanism, not just limited to certain ethnic and nation which is emphasizing its obedience just to God, not the something else. In this paper, the writer tried to interpret the original works of Alfarabi which is directly related to his political thought and the other thinkers who are studying his political thought. In his political thought, Alfarabi emphasized that the main purpose of the state is to make the social-welfare for its citizens. Based on the organic theory, Alfarabi stated that the government of the state is just look-like the human organism system. In which, each of the existing element functioned to strengthen each other to achieve one goal. The ideal state for Alfarabi is the state which is having the goals for its citizen welfare, and who become the prime leader is a philosopher, who is having the prophetic character, having the wider knowledge, and able to communicate with al 'aql al fa’al trough al ‘aql mustafad. 

scholarly journals Early Childhood Practitioner Judgments of the Social Validity of Performance Checklists and Parent Practice Guides

2017 ◽  
Vol 5 (3) ◽  
pp. 176 ◽  
Author(s):  
Carl J. Dunst
Keyword(s):  
Early Childhood ◽  
Field Test ◽  
Social Validity ◽  
Field Tests ◽  
Intervention Programs ◽  
Early Childhood Intervention ◽  
The Social ◽  
Childhood Intervention ◽  
Made In

Findings from three field tests evaluations of early childhood intervention practitioner performance checklists and three parent practice guides are reported. Forty-two practitioners from three early childhood intervention programs reviewed the checklists and practice guides and made (1) social validity judgments of both products, (2) judgments of the compatibility of the checklists and practice guides, and (3) suggestions for improving the intervention products and materials. Results showed that practitioner feedback and suggestions yielded valuable information for improving the products where changes made in response to the practitioners’ social validity ratings and suggestions from the first field test had discernible effects on judgments and feedback of revised products. The importance of striving to develop intervention products and materials that are judged as socially important and acceptable is described.

scholarly journals The Utopian Impulse and Searching for the Kingdom of God: Ludwik Królikowski’s (1799–1879) Romantic Utopianism in Transnational Perspective

Slovene ◽  
2018 ◽  
Vol 7 (2) ◽  
pp. 199-226
Author(s):  
Piotr Kuligowski
Keyword(s):  
Human Activities ◽  
Kingdom Of God ◽  
Time And Space ◽  
Holistic View ◽  
Entire Life ◽  
Ideal State ◽  
The Will ◽  
Material Conditions ◽  
The Ideal ◽  
Will Of God

This article addresses the question of the utopian impulse in Ludwik Królikowski’s work and thought, with particular reference to its transnational dimension. By providing a holistic view of his entire life and sketching his biographical background, this study reveals Królikowski’s principal inspirations and the reasons for his changes of mind, and in so doing, presents him against the background of various intersecting currents of thought. With regard to Królikowski’s utopianism, it is argued that he rejected the canons typical for Renaissance and Enlightenment reflections on the ideal state, in which visions of spotless, well-organized cities dominated. The Polish thinker was instead interested in Christianity and extolled spontaneous human activities, which would be in accordance with the will of God only if they were pursued freely, without any coercion. As analysis of his works reveals, he expounded a vision of utopia (primarily called “the Kingdom of God”) beyond time and space, without any consideration of the material conditions for its existence. In developing his views, Królikowski was inspired by Saint-Simonism, the Icarian movement, and ongoing discussions of the Polish and Slavic questions. These three main dimensions, interwoven with intermittent failures and reflections embarked upon anew, constituted the intellectual space in which his unique propositions were made.

scholarly journals Influence of weather conditions during the pre-vegetation period on productivity and yield qualities of soft spring wheat seeds

2019 ◽  
Vol 20 (5) ◽  
pp. 437-446
Author(s):  
O. S. Amunova
Keyword(s):  
Seed Germination ◽  
Spring Wheat ◽  
Field Tests ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Reproductive Period ◽  
Average Yield ◽  
Seed Formation ◽  
Yield Structure ◽  
Seminal Roots

Eleven genotypes of soft spring wheat were studied in a series of field and laboratory experiments in 2014 - 2018. The laboratory test included accounting for seed germination and assessing the physiological parameters of seedlings (number of seminal roots, dry matter mass of roots and shoots and their ratio (RSR index)). The field tests included phenological observa-tions, assessment of genotypes by productivity and average yield. The average yield of wheat during the years of study was 1.93-4.92 t/ha and depended on weather conditions during the period of grain formation. The trait “1000-grain mass” was formed under the influence of the genotype (68.1%), the portion of influence of weather conditions was 11.8%. It has been established that the duration of the reproductive period of soft spring wheat in the Kirov region should be at least 40 days. Reducing the duration of the reproductive period leads to a decrease in seed germination capacity. Seeds the formation and development of which took place at the optimum temperature of 16 ºС, by germination spent the most part of seed reserve substances for the development of the aboveground part of the plant (RSR index = 0.70). Under these conditions, the varieties with a lower root index were characterized by high values of the elements of yield structure. At the increased average daily air temperature (by 2-4 oC), seeds that could germinate with a significantly higher number of seminal roots (6.6-9.0%) developed on the maternal plants. During the germination of such seeds, the plastic substances distributed evenly between the shoots and seminal roots (RSR index = 0.94-0.98). The increased influx of assimilates to root system of seedlings could be explained by the fact that the process of seed formation on the maternal plants took place under conditions close to stressful and the adapted seeds spent more reserve substances for root development.

The importance of aerodynamics for prosthetic limb design used by competitive cyclists with an amputation: An introduction

2014 ◽  
Vol 39 (3) ◽  
pp. 232-237 ◽  
Author(s):  
Bryce Dyer
Keyword(s):  
Field Test ◽  
Aerodynamic Drag ◽  
Field Tests ◽  
Field Testing ◽  
Test Method ◽  
Limb Amputation ◽  
Small Scale ◽  
Prosthetic Limb ◽  
Testing Method ◽  
Competitive Cyclists

Background/Objectives: This study introduces the importance of the aerodynamics to prosthetic limb design for athletes with either a lower-limb or upper-limb amputation. Study design: The study comprises two elements: 1) An initial experiment investigating the stability of outdoor velodrome-based field tests, and 2) An experiment evaluating the application of outdoor velodrome aerodynamic field tests to detect small-scale changes in aerodynamic drag respective of prosthetic limb componentry changes. Methods: An outdoor field-testing method is used to detect small and repeatable changes in the aerodynamic drag of an able-bodied cyclist. These changes were made at levels typical of alterations in prosthetic componentry. The field-based test method of assessment is used at a smaller level of resolution than previously reported. Results: With a carefully applied protocol, the field test method proved to be statistically stable. The results of the field test experiments demonstrate a noticeable change in overall athlete performance. Aerodynamic refinement of artificial limbs is worthwhile for athletes looking to maximise their competitive performance. Conclusion: A field-testing method illustrates the importance of the aerodynamic optimisation of prosthetic limb components. The field-testing protocol undertaken in this study gives an accessible and affordable means of doing so by prosthetists and sports engineers. Clinical relevance Using simple and accessible field-testing methods, this exploratory experiment demonstrates how small changes to riders’ equipment, consummate of the scale of a small change in prosthetics componentry, can affect the performance of an athlete. Prosthetists should consider such opportunities for performance enhancement when possible.

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