scholarly journals The 2019–2020 EURADOS WG10 and RENEB Field Test of Retrospective Dosimetry Methods in a Small-Scale Incident Involving Ionizing Radiation

2020 ◽  
Vol 195 (3) ◽  
Author(s):  
L. Waldner ◽  
C. Bernhardsson ◽  
C. Woda ◽  
F. Trompier ◽  
O. Van Hoey ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Field Test ◽  
Small Scale ◽  
Retrospective Dosimetry

Lessons Learned from Small Scale Field Test Demonstrating CO2 EOR and Geologic Storage at Wellington Field in Southern Kansas

2019 ◽  
Author(s):  
Yevhen Holubnyak ◽  
Willard Watney ◽  
Tiraz Birdie ◽  
Dana Wreath ◽  
George Tsoflias ◽  
...  
Keyword(s):  
Field Test ◽  
Lessons Learned ◽  
Small Scale ◽  
Geologic Storage ◽  
Scale Field ◽  
Co2 Eor

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.

scholarly journals Characterisation of a Mobile Jaw Crusher for Small Scale Mining and Construction Industry

2008 ◽  
Vol 31 (2) ◽  
pp. 113-120
Author(s):  
A.J.M. Itika
Keyword(s):  
Particle Size ◽  
Diesel Engine ◽  
Construction Industry ◽  
Field Test ◽  
Small Scale ◽  
Operating Parameters ◽  
Feed Material ◽  
Jaw Crusher ◽  
Rotary Speed

A small jaw crusher with a crushing capacity of 1 ton per hour has been developed for use in the small scale mining and construction industry. A 3.68 kW air cooled diesel engine was installed to power the crusher. Laboratory and field test were conducted using limestone as feed material at different operating parameters. The analysis of the product from the crusher showed that at a constant jaw gap, coarser products were obtained when the rotary speed was varied from 220 rpm to 300 rpm. With a jaw gap of 25 mm, a higher cumulative undersize fraction was obtained at particle size 25 mm. In contrast, at a jaw gap of 15 mm, highercumulative undersize fraction was obtained at particle size 15 mm. With a feed size 80% passing 60 mm, a finer product was obtained as compared to a feed 80% passing 120 mm. The throughput of the machine increased from 0.4 ton/hr to 0.7 ton/hr when the speed was increased from 220 rpm to 300 rpm. It was found that it is possible to select a combination of operating parameters to achieve a particular goal of operation.

scholarly journals PENGEMBANGAN MEDIA VIDEO TUTORIAL BERBASIS ANIMASI DALAM PEMBELAJARAN GARDU INDUK TENAGA LISTRIK KELAS XI DI SMK NEGERI 1 LUBUK PAKAM

2021 ◽  
Vol 1 (1) ◽  
pp. 26
Author(s):  
Fauzi H Sitorus Pane ◽  
Muhammad Amin
Keyword(s):  
Electric Power ◽  
Field Test ◽  
Large Scale ◽  
Electrical Power ◽  
Expert Assessment ◽  
Small Scale ◽  
Video Tutorial ◽  
Power Substation ◽  
Scale Field ◽  
Teachers And Students

Abstract This study aims to: (1) Know how to develop Electric Power Substation Learning Media class XI majoring in Electrical Power Grid Engineering at SMK Negeri 1 Lubuk Pakam, (2) Knowing the feasibility level of Electric Power Substation Learning Media class XI majoring in Electrical Power Network Engineering at SMK Negeri 1 Lubuk Pakam.Abstract must reflect the overall substance of the article content and be able to help readers determine its relevance to their interests and decide whether to read the document in its entirety. This research is included in Research and Development (R&D). This media manufacturing procedure includes (1) Analysis of the product to be developed, (2) Developing the initial product, (3) Expert validation and revision, (4) Small-scale field test and product revision, (5) Large-scale field test and final produc. The development of this product uses Video Scribe software. Product data in the form of qualitative data obtained from the advice and input of media experts, material experts, teachers and students, as well as quantitative data derived from the assessment of media experts, material experts, teachers and students. The results of this study are: (1) making video media tutorial electric power substation steps include, making product design developed, collecting supporting materials for electric power substation materials, finishing, media assessment by media and material experts, revisions, small-scale trials and large-scale trials. (2) The feasibility result of video tutorial media based on animation using Video Scribe software as follows: media expert assessment obtained a score of 4.86 with a very decent category, material expert assessment gets a score of 4.46 with a very decent category, small-scale test assessment gets a score of 4.34  Key Words: Development of learning media, electric power substation. AbstrakPenelitian ini bertujuan untuk : (1)  Mengetahui cara pengembangan Media Pembelajaran Gardu Induk Tenaga Listrik kelas XI jurusan Teknik Jaringan Tenaga Listrik di SMK Negeri 1 Lubuk Pakam, (2) Mengetahui tingkat kelayakan Media Pembelajaran Gardu Induk Tenaga Listrik kelas XI jurusan Teknik Jaringan Tenaga Listrik di SMK Negeri 1 Lubuk Pakam. Penelitian ini termasuk dalam Penelitian dan Pengembangan (Research and Development (R&D)). Prosedur pembuatan media ini meliputi (1) Analisis produk yang akan dikembangkan, (2) Mengembangkan produk awal, (3) Validasi ahli dan revisi, (4) Uji lapangan skala kecil dan revisi produk, (5) Uji lapangan skala besar dan produk akhir. Pengembangan produk ini menggunakan software Video Scribe. Data produk berupa data kualitatif yang didapat dari saran dan masukan ahli media, ahli materi, guru dan siswa,serta berupa data kuantitatif yang berasal dari penilaian ahli media, ahli materi,guru dan siswa. Hasil penelitian ini adalah : (1) pembuatan media video tutorial gardu induk tenaga listrik  langkah-langkahnya meliputi, membuat desain produk yang dikembangkan, mengumpulkan bahan-bahan pendukung untuk materi gardu induk tenaga listrik, finishing, penilaian media oleh ahli media dan materi, revisi, uji coba skala kecil dan uji coba skala besar. (2) Hasil kelayakan media video tutorial berbasis animasi dengan menggunakan software Video Scribe sebagai berikut : penilaian ahli media diperoleh nilai 4,86 dengan kategori sangat layak, penilaian ahli materi mendapatkan nilai sebesar 4,46 dengan kategori sangat layak, penilaian uji skala kecil mendapatkan nilai sebesar 4,34 dengan kategori sangat layak, penilaian uji skala besar mendapatkan nilai sebesar 4,17 dengan kategori sangat layak. Kata Kunci: Pengembangan media pembelajaran, gardu induk tenaga listrik.

scholarly journals Field Test of Wind Power Output Fluctuation Control Using an Energy Storage System on Jeju Island

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5760
Author(s):  
Sang Heon Chae ◽  
Chul Uoong Kang ◽  
Eel-Hwan Kim
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Power System ◽  
Wind Turbine ◽  
Field Test ◽  
Storage System ◽  
Energy Storage System ◽  
Jeju Island ◽  
Small Scale ◽  
Output Stabilization

At present, renewable energy installations are expanding to solve both environmental problems and expensive energy fuel import prices in isolated areas. However, in a small-scale power system, rapid output fluctuations of renewable energy may cause power quality problems such as voltage and frequency fluctuations in the power system. To solve this problem, the local government of Jeju Island in South Korea implemented a megawatt (MW)-class pilot project to stabilize the output power of wind turbines using an energy storage system (ESS). In this project, a 0.5 MWh lithium-ion battery was connected to a 3 MW wind turbine via 1 MW power conversion system (PCS). In this paper, the field test results were divided into four categories as follows. First, the performance of stabilizing the output of the wind turbine using ESS was confirmed. Second, the control performance of the ESS was confirmed when the wind turbine suddenly stopped due to an accident. Third, it was confirmed that the ESS discharged energy into the power system after the stabilization of the wind turbine output. Fourth, the reasons for the failure of the ESS to control output stabilization of the wind turbine were analyzed through MATLAB simulation.

FIELD TEST OF AN AUTOCIDAL CONTROL METHOD WITH THE FERAL MOSQUITO CULEX RESTUANS (DIPTERA: CULICIDAE)

1975 ◽  
Vol 107 (5) ◽  
pp. 465-470
Author(s):  
G. K. Bracken ◽  
M. G. Maw
Keyword(s):  
Field Test ◽  
Control Method ◽  
Test Area ◽  
Small Scale ◽  
Hypothetical Model ◽  
Culex Restuans ◽  
Chemical Sterilization ◽  
Autocidal Control ◽  
Gravid Females ◽  
Oviposition Sites

AbstractAn autocidal control method involving attraction of ovipositing females to artificial oviposition sites, rearing and chemical sterilization of adults reared from the collected eggs, and release of sterilized males back into the system was field tested with the mosquito Culex restuans Theobald. This species cannot be cultured continuously. The average weekly percentage of sterile egg rafts was 2.4 (range 0.3–16.0) in the test area where sterile males were released (av. 9620/wk) and 5.3 (range 1.5–30.0) in the area where both sterile males (av. 7000/wk) and untreated females (av. 4590/wk) were released. The low level of sterility achieved is attributed to infiltration of gravid females from outside the experimental areas, poor efficiency in producing sterile males from the collected egg rafts, and the small scale of the test.A hypothetical model is used to compare theoretical reduction in rates of increase of a population of mosquitoes when various proportions are induced to oviposit in ‘trap’ pools if the eggs trapped are destroyed, reared to produce sterile males for release, or reared to produce sterile males for release in conjunction with larvicidal treatment of uncontrolled breeding areas.

scholarly journals PENGEMBANGAN MEDIA PANLINTARMATIKA (PAPAN PERKALIAN PINTAR MATEMATIKA) MATERI PERKALIAN UNTUK SISWA SEKOLAH DASAR

2021 ◽  
Vol 2 (1) ◽  
pp. 41-47
Author(s):  
Hasna Nur Afifah ◽  
Meita Fitrianawati
Keyword(s):  
Data Analysis ◽  
Field Test ◽  
Large Scale ◽  
Field Testing ◽  
Small Scale ◽  
Quantitative Data Analysis ◽  
Scale Field ◽  
Large Scale Field ◽  
The Media ◽  
Information Collecting

This study aims to 1) find out the steps in developing Panlintarmatika learning media, 2) know the feasibility of developing Panlintarmatika learning media based on experts.  This study is a type of Research and Development (RD) research using the Borg and Gal model which consists of: (1) research and information collecting, (2) planning, (3) developing preliminary from a product, (4) prelimunary field testing,  (5) main product revision, (6) main field testing, (7) operational product revision (8) operational field testing.  The trial subjects used were 18 grade 2 students and teachers at SD N Kalangan.  Data collection techniques in the form of observation, interviews and questionnaires.  Data analysis includes quantitative data analysis and qualitative data analysis.  The results showed that the validation of the media experts received a score of 60 in the "Very good" category, the validation of the material experts received a score of 42 in the "Good" category and the learning expert received a score of 60 in the "Good" category.  The results of the small-scale field test students get a score of 100 with the category "Very Good" and the teacher gets a score of 94 with the category "Very Good".  Large-scale field test results students get a score of 100 with the category "Very Good" and the teacher scores 98 with a score of "Very Good" It can be concluded that the Panlintarmatika learning media is feasible and can be used as class 2 learning multiplication material

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