scholarly journals The Results of Field Tests of an Onion Set Harvesting Machine Equipped with a Shaker Arrangement Asymmetrical Bar Elevator

2020 ◽  
Vol 30 (1) ◽  
pp. 133-148
Author(s):  
Aleksey S. Dorokhov ◽  
Alexey V. Sibirev ◽  
Aleksandr G. Aksenov
Keyword(s):  
Field Tests ◽  
Field Research ◽  
Technical Requirements ◽  
Supporting Roller ◽  
Support Roller ◽  
Production Research ◽  
Optimal Values ◽  
Qualitative Performance ◽  
Full Separation

Introduction. Machines for harvesting roots and onions do not provide qualitative indices of root heap separation that leads to violation of technical requirements during harvesting. New solutions are needed to increase the quality of root separation, increase the quality of separation and reduce damage. Materials and Methods. The article presents the design of the onion set harvesting machine. The machine is equipped with a bar elevator with asymmetrical arrangement of shakers. The technique and results of field research to determine the quality of set onion separation at the experimental rod elevator are described. Results. The results of production research of the onion set harvesting machine showed qualitative performance of the technological process of separating onion heap at optimal values of parameters: center distance between elliptical shaker and supporting roller 0.36-0.4 m at full separation of 97.0-97.2% and onion damage 1.65-1.68%; forward speed of rod elevator with asymmetrical arrangement of elliptical shaker and supporting roller 1.6 m/s at full separation of 98.5% and bulb damage 1.3%. Discussion and Conclusion. The use of a bar elevator with an asymmetrical arrangement of the elliptical shaker and support roller allows, in comparison with the symmetrical arrangement of shakers, an increase in bulb separation by 2.0% and a decrease in onion damage by 1.1%.

An Analysis of On-Bord High-Voltage Converters of Single-Phase Alternating Current with Increased Miroelectric Power Factor

2020 ◽  
Vol 10 (10) ◽  
pp. 44-51
Author(s):  
Yury Yu. SKOROKHOD ◽  
◽  
Sehgey I. VOL’SKIY ◽  
Keyword(s):  
High Voltage ◽  
Single Phase ◽  
Input Current ◽  
Voltage Converter ◽  
Input Unit ◽  
Power Circuit ◽  
Electrical Systems ◽  
Static Converters ◽  
Technical Requirements

The power circuit arrangements of on-board high-voltage static converters fed from a 3000 V AC single-phase network that in the general case produce multi-channel AC and DC output voltages are considered. The basic technical requirements posed to such converters are formulated. The general structural diagram of high-voltage converters with improved electric power consumption quality is given. Possible power circuit arrangements for the high-voltage converter input unit based on single-phase input current correction devices are considered. A classification and criteria for comparative evaluation of the possible power circuit arrangements of these devices are proposed. The information presented in the article will be of interest for specialists engaged in designing on-board electrical systems involving high-voltage converters that must comply with strict requirements for the quality of consumed single-phase input current.

Assessment of the quality of opening of soil structures technical means developed in Kuban State Agrarian University

2020 ◽  
Author(s):  
B. F. Tarasenko B. F. ◽  
◽  
S. Y. Orlenko S. Y. ◽  
V. V. Kuzmin V. V.
Keyword(s):  
Comparative Analysis ◽  
Field Tests ◽  
Soil Structures ◽  
Improved Design

The article presents a comparative analysis, based on field tests, of the quality of loosening of soil structures of the upper horizon with technical means developed at KubSAU and an improved design of a universal tillage unit.

Pengembangan Minat Baca Peserta Didik : Studi Peran Kepala Sekolah

2018 ◽  
Vol 2 (2) ◽  
pp. 84
Author(s):  
Fahrurrrazi Fahrurrrazi
Keyword(s):  
Descriptive Analysis ◽  
Field Research ◽  
Learning Ability ◽  
Analysis Technique ◽  
Role Of Principal ◽  
Strategic Role ◽  
Management Functions ◽  
Reading Interest

Penelitian ini dilatarbelakangi oleh fenomena minat baca siswa dan pengaruh minat baca terhadap pertumbuhan kemampuan belajar siswa pada jenjang-jenjang pendidikan selanjutnya. Kepala sekolah sebagai lokomotif perkembangan mutu pendidikan memiliki peran strategi bagi pengumbuhan dan pengembangan minat baca peserta didik. Penelitian ini bertujuan untuk mengetahui peran kepala madrasah sebagai edukator, manajer, dan innovator dalam pengembangan minat baca peserta didik di MIT Nurul Islam Kota Semarang. Penelitian ini merupakan penelitian kualitatif lapangan, data dikumpulkan melalui observasi, wawancara, dokumentasi dan triangulasi, serta dianalisis dengan teknik analisis deskriptif. Hasil penelitian ini menunjukkan bahwa: 1) Peran kepala madrasah sebagai edukator dalam pengembangan minat baca peserta didik meliputi meliputi tiga pembinaan, yakni pembinaan mental dan moral, serta pembinaan artistik. 2) Peran kepala madrasah sebagai manajer dalam pengembangan minat baca peserta didik di MIT Nurul Islam meliputi penerapan fungsi-fungsi manajemen dengan didasarkan pada pada kerjasama dengan USAID dan UIN Walisongo Semarang. 3) Peran kepala madrasah sebagai innovator dalam pengembangan minat baca peserta didik di MIT Nurul Islam Kota Semarang meliputi inovasi strategi, pola pikir (mindset) dan struktur. Abstract This research is motivated by the phenomenon of reading interest of students and the influence of reading interest on the growth of students' learning ability in the next level of education. The principal as a locomotive of the development of the quality of education has a strategic role for the growth and development of reading interest of learners. This study aims to determine the role of principal as an educator, manager, and innovator in the development of reading interest of learners in MIT Nurul Islam Semarang City. This research is a qualitative field research, data collected through observation, interview, documentation and triangulation, and analyzed by descriptive analysis technique. The results of this study indicate that: 1) The role of principal as an educator in the development of reading interest of learners includes three activities are coaching, namely mental and moral coaching, and artistic coaching. 2) The role of principal as manager in the development of reading interest of learners at MIT Nurul Islam covers the application of management functions based on cooperation with USAID and UIN Walisongo Semarang. 3) The role of principal as innovator in the development of reading interest of learners at MIT Nurul Islam Semarang City includes innovation strategy, mindset, and structure.

Resistance to Lettuce Infectious Yellows Virus in Melon

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 534b-534
Author(s):  
James D. McCreight
Keyword(s):  
Cucumis Melo ◽  
Dominant Gene ◽  
Field Tests ◽  
Single Dominant Gene ◽  
Limited Data ◽  
Sweetpotato Whitefly ◽  
Sources Of Resistance ◽  
Lettuce Infectious Yellows Virus ◽  
Greenhouse Tests

Yellowing of melon (Cucumis melo L.) incited by lettuce infectious yellows virus (LIYV) reduces yield and fruit quality of infected plants. LIYV is transmitted only by the sweetpotato whitefly (Bemisia tabaci Genn.). Two naturally infected field tests indicated several potential sources of resistance to LIYV. PI 124112 and `Snake Melon' had mild symptoms in both field tests whereas PI 313970 was asymptomatic in the test in which it was included. In greenhouse tests using controlled inoculation, PI 313970 was asymptomatic, had negative ELISA assays for LIYV, and was negative for LIYV in serial transfers to Chenopodium. `Top Mark' and `PMR 5' were symptomatic, had positive ELISA assays for LIYV, and were positive for LIYV in serial transfers to Chenopodium in these greenhouse tests. Limited data indicate that resistance in PI 313970 is conditioned by a single, dominant gene.

MULTISTAGE MICROSTRIP UHF LOAD

2018 ◽  
pp. 53-57 ◽  
Author(s):  
G. G. Savenkov ◽  
V. P. Razinkin ◽  
A. D. Mekhtiev
Keyword(s):  
Frequency Response ◽  
Frequency Band ◽  
High Power ◽  
Two Stage ◽  
High Power Microwave ◽  
Modelling Method ◽  
Optimal Values ◽  
Inductive Elements ◽  
Power Microwave

Applications of modern terminal loads and its relevant disadvantages are described in this paper. The decomposing method of wideband microwave high power microstrip loads design is proposed in this paper with purpose of matching quality improving. Multiple extension of multistage load bandwidth is provided by using of external matching circuit and internal matching inductive elements. The maximum reachable bandwidth of multistage load is estimated and optimal values of mathing circuit elements are founded on basis of equivalent lumped scheme. The topology of microstrip two-stage high power microwave load is developed and its frequency response, calculated via numeric electrodynamic modelling method is outlined in the paper. Modelling results show good matching quality of considered load at the frequency band below 3,5 GHz.

scholarly journals A horizontally polarizing liquid trap enhances the tabanid-capturing efficiency of the classic canopy trap

2013 ◽  
Vol 103 (6) ◽  
pp. 665-674 ◽  
Author(s):  
Á. Egri ◽  
M. Blahó ◽  
D. Száz ◽  
G. Kriska ◽  
J. Majer ◽  
...  
Keyword(s):  
Field Experiments ◽  
Polarized Light ◽  
Field Tests ◽  
Male And Female ◽  
Host Seeking ◽  
Blood Sucking ◽  
Liquid Trap ◽  
Black Sphere ◽  
Combined Trap

AbstractHost-seeking female tabanid flies, that need mammalian blood for the development of their eggs, can be captured by the classic canopy trap with an elevated shiny black sphere as a luring visual target. The design of more efficient tabanid traps is important for stock-breeders to control tabanids, since these blood-sucking insects can cause severe problems for livestock, especially for horse- and cattle-keepers: reduced meat/milk production in cattle farms, horses cannot be ridden, decreased quality of hides due to biting scars. We show here that male and female tabanids can be caught by a novel, weather-proof liquid-filled black tray laid on the ground, because the strongly and horizontally polarized light reflected from the black liquid surface attracts water-seeking polarotactic tabanids. We performed field experiments to reveal the ideal elevation of the liquid trap and to compare the tabanid-capturing efficiency of three different traps: (1) the classic canopy trap, (2) the new polarization liquid trap, and (3) the combination of the two traps. In field tests, we showed that the combined trap captures 2.4–8.2 times more tabanids than the canopy trap alone. The reason for the larger efficiency of the combined trap is that it captures simultaneously the host-seeking female and the water-seeking male and female tabanids. We suggest supplementing the traditional canopy trap with the new liquid trap in order to enhance the tabanid-capturing efficiency.

THE RULE OF COMBINING A PRIORI AND EXPERIMENTAL INFORMATION IN THE TASKS OF MANAGING TESTS OF COMPLEX TECHNICAL PRODUCTS ACCORDING TO THE BERNOULLI SCHEME

2020 ◽  
pp. 3-13
Author(s):  
Yu. I. Buryak ◽  
A. A. Skrynnikov
Keyword(s):  
Field Experiments ◽  
A Priori ◽  
Field Tests ◽  
Experimental Information ◽  
Full Scale ◽  
Testing Complex ◽  
Series Of Experiments ◽  
Full Scale Tests ◽  
Technical Products

The article is devoted to the substantiation of the procedure for testing complex technical systems to assess the probability of performing the task, taking into account a priori data obtained from the results of modeling, field tests of components and prototypes, operation of analogues, etc. The conditions for the formation of a combined sample consisting of field experiments and experiments counted on the results of modeling are justified. Data uniformity is checked using the Student's criterion. The minimum volume of full-scale tests is determined by the requirement of equality of the amount of Fischer information about the estimated parameter obtained during full-scale tests and at the expense of a priori data A strategy for conducting field experiments is proposed, in which the required quality of evaluating the probability of completing the task is achieved with the minimum possible number of field experiments. At the first stage, a series of experiments with a volume equal to half of the required sample size is performed. At the second stage, the experiments are conducted sequentially with an assessment after each experiment of the requirements for the amount of information about the evaluated parameter and for the uniformity of data. Experiments are terminated when the specified requirements are met, and then a combined sample is formed, which is used to evaluate the probability of the system performing the task. A model example is considered. The estimation of the gain in the number of experiments performed at different probability values was carried out.

scholarly journals KUALITAS LINGKUNGAN PERAIRAN PANTAI DI SEKITAR LOKASI TAMBAK PERIKANAN KECAMATAN GEROKGAK KABUPATEN BULELENG BALI

2020 ◽  
Vol 14 (2) ◽  
pp. 111
Author(s):  
Beny Mustofa ◽  
I Wayan Arthana ◽  
Ni Luh Watiniasih
Keyword(s):  
Water Quality ◽  
Research Method ◽  
Species Abundance ◽  
Field Research ◽  
Dominant Type ◽  
Blue Green Algae ◽  
Sampling Locations ◽  
Quality Of Waters ◽  
Better Than

The purpose of this study was to determine the quality of waters, community structure of phytoplankton and zooplankton around the fishponds waters of Gerokgak Subdistrict. This research was conducted for 2 months, from May to June 2019. There were three sampling locations, namely in Gerokgak, Patas and Sumberkima Villages. The research method used was field research using quantitative analysis of phytoplankton biological indice. The waters condition around the Gerokgak Subdistrict waters was rather polluted, except for the around Sumberkima Village waters. The quality of the waters of Sumberkima Village was better than that of Gerokgak Village and Patas Village waters. Plankton abundance in the waters of Sumberkima Village was slightly low. The highest abundance of plankton in the waters of Patas Village and the lowest in Gerokgak Village waters. The dominant type of plankton was Cyanophyceae (blue-green algae). Keywords: water quality; plankton; species; abundance.

scholarly journals Towards Smart City: Influence of Air Pollution on the Local Community of the Zabrze City in Surveys and Field Research

2018 ◽  
Vol 1 (1) ◽  
pp. 845-850
Author(s):  
Jolanta Ignac-Nowicka
Keyword(s):  
Quality Of Life ◽  
Air Pollution ◽  
Smart City ◽  
Local Community ◽  
Field Research ◽  
Field Studies ◽  
Toxic Gases ◽  
Accumulation Of Pollutants ◽  
The City

Abstract The results of the conducted pilot research indicated the basic local problems of the residents of Zabrze city. The purpose of the next research was to answer the question: how to improve the quality of life of residents in a city with significant air pollution. Activities aimed at this goal are inscribed in the idea of "smart city". The article presents the results of pilot measurements of air pollution with toxic gases in the Zabrze city in the Silesian agglomeration (Poland). Field studies at selected locations in the city concerned measurements of nitrogen dioxide, sulphur dioxide and carbon dioxide. The aim of these studies was to identify areas of the city with significant air pollution with toxic gases in order to plan further detailed research. Made measurements showed the appearance of the local problem of accumulation of pollutants in several areas of the city. The results obtained were compared with surveys conducted among residents of the Zabrze city. The aim of the survey was to examine the respondents' awareness of: the location of areas with noticeable air pollution and health problems resulting from air pollution in the place of residence. The article also presents a plan of possible actions for the city of Zabrze within the framework of the "smart city" idea to improve the quality of life of the local city community in conditions of increased emission of gas pollution in the city.

scholarly journals PERAN KEPALA MADRASAH DALAM MENINGKATKAN MUTU GURU DI MTS NURUL FALAH TALOK KRESEK KABUPATEN TANGERANG

2017 ◽  
Vol 3 (02) ◽  
pp. 168
Author(s):  
Malik Fatoni
Keyword(s):  
Human Resource Development ◽  
Teacher Quality ◽  
Field Research ◽  
Teacher Professionalism ◽  
Research Approach ◽  
Teacher Competence ◽  
Role Of Principal ◽  
Competence Test

This study aims to determine how the role of principal In Improving Teacher Quality in Private MTs Nurul Falah Talok Kresek Tangerang District. This research is qualitative with Field Research approach (Field Research). In this research, it is found that the head of madrasah in improving the quality of teachers in private MTs Nurul Falah Talok Kresek Tangerang Regency can be achieved. Achievement and success are based on a number of findings in the research that took place, namely 1). The Head of Madrasah has empowered the effort to improve the quality of teachers by covering various practical and logical work such as teacher competence test, guidance of teaching program and improvement of teacher professionalism, Increase of income and teacher welfare. 2). Madrasah principals undertake various development and fulfillment efforts related to infrastructure and madrasah infrastructure facilities. Another result of this research is that the success of the madrasah head that can support the process of teacher quality improvement can occur due to several factors, among others 1). Madrasah principal can play an important role as a leader with its central power to always move the artery of madrasah life, 2). The head of Madrasah is also able to understand SOP, their duties and functions for the success of madrasah accompanied by a strong attitude towards the subordinates who lead in this case the teacher in his madrasah. Keywords. Management, Human Resource Development, Madrasah.

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