Field-testing of a cost-effective mobile-phone based microscope for screening of Schistosoma haematobium infection (Conference Presentation)

2016 ◽  
Author(s):  
Hatice Ceylan Koydemir ◽  
Isaac I. Bogoch ◽  
Derek Tseng ◽  
Richard K. D. Ephraim ◽  
Evans Duah ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Schistosoma Haematobium ◽  
Cost Effective ◽  
Field Testing

Development and Field Testing of an Inclined Flanged Compact Diffuser for a Micro Wind Turbine

2014 ◽  
Author(s):  
Sandip Kale ◽  
S. N. Sapali
Keyword(s):  
Wind Turbine ◽  
Wind Velocity ◽  
Wind Turbines ◽  
Energy Production ◽  
Cost Effective ◽  
Field Testing ◽  
International Electrotechnical Commission ◽  
Average Wind Speed ◽  
Average Wind ◽  
Power Curves

Micro wind turbines installed in various applications, experience average wind speed for most of the time during operations. Power produced by the wind turbine is proportional to the cubic power of the wind velocity and a small increase in wind velocity results increases power output significantly. The approach wind velocity can be increased by covering traditional wind turbine with a diffuser. Researchers are continuously working to develop a compact, lightweight, cost effective and feasible diffuser for wind turbines. The present work carried out to develop a diffuser with these stated objectives. A compact, lightweight inclined flanged diffuser developed for a micro wind turbine. Bare micro wind turbine and wind turbine covered with developed efficient inclined flanged diffuser tested in the field as per International Electrotechnical Commission (IEC) standards and results presented in the form of power curves. The prediction of annual energy production for both wind turbines determined as per IEC standards.

Mobile-phone-based colourimetric analysis for determining nitrite content in water

2018 ◽  
Vol 15 (7) ◽  
pp. 403 ◽  
Author(s):  
Chanida Puangpila ◽  
Jaroon Jakmunee ◽  
Somkid Pencharee ◽  
Wipada Pensrisirikul
Keyword(s):  
Mobile Phone ◽  
Water Samples ◽  
Diazonium Salt ◽  
Field Measurements ◽  
Cost Effective ◽  
Environmental Water ◽  
Sulfanilic Acid ◽  
Calibration Graph ◽  
Nitrite Ion ◽  
Griess Reaction

Environmental contextA widespread pollutant in groundwater, rivers and lakes is nitrite, which is commonly determined batchwise by using colourimetry. The batchwise method, however, requires relatively large and expensive instrumentation, and hence is unsuitable for in-field measurements. This work introduces a simple and portable colourimetric analyser based on a mobile-phone camera for monitoring nitrite concentrations in environmental water samples. AbstractA cost-effective and portable colourimetric analyser installed on a mobile phone was used to measure nitrite in water samples in Chiang Mai City, Thailand. The colourimetric detection was based on the Griess reaction, in which nitrite ion reacts with sulfanilic acid under acidic conditions to produce a diazonium salt that further reacts with N-(1-naphthyl)-ethylenediamine dihydrochloride to form a red–violet azo dye. Under controlled conditions using a light-tight box with LED flash lights, images of the red–violet solution were captured using a built-in camera and further analysed by a program, Panalysis, on the mobile phone. The calibration graph was created by measuring the red colour intensity of a series of standard nitrite solutions from 0.09–1.8 mg N L−1. The calibration equation was then automatically stored for nitrite analysis. The results demonstrated good performance of the mobile phone analyser as an analytical instrument. The accuracy (RE <4%) and precision (RSD ≤ 1%, intra- and inter-day) were also obtained with a detection limit of 0.03 mg N L−1 and a sample throughput of 40 samples per hour. Our results establish this simple, inexpensive and portable device as a reliable in-field monitor of nitrite in environmental waters.

scholarly journals KEPRAKTISAN PERMAINAN ZUPER ABASE BERBASIS ANDROID SEBAGAI MEDIA PEMBELAJARAN ASAM BASA

2020 ◽  
Vol 9 (3) ◽  
pp. 317-323
Author(s):  
Anggie Bagoes Kurniawan ◽  
Rusly Hidayah
Keyword(s):  
Research And Development ◽  
Mobile Phone ◽  
Field Testing ◽  
Technology Skills ◽  
Information Media ◽  
Media And Technology

Salah satu keterampilan abad-21 adalah information media and technology skills. Dalam penerapankurikulum 2013 ini mengacu pada Permendikbud nomor 22 tahun 2016 tentang standar proses pendidikandasar dan menengah. Salah satu prinsipnya adalah menggunakan teknologi informasi dan komunikasiuntuk meningkatkan efisiensi serta efektivitas pembelajaran. Media pembelajaran berbasis androidmerupakan salah satu penerapan gaya belajar abad ke-21. Implementasi mobile phone di sekolah dapatmenguntungkan sebab perangkat tersebut telah dikenal secara umum oleh peserta didik. Permainan terdiridari sekumpulan peraturan yang membangun situasi bersaing dari dua hingga beberapa orang maupunkelompok dengan memilih strategi yang dibangun untuk memaksimalkan kemenangan. Pembelajaranmenggunakan permainan pasti memiliki manfaat juga. Kepraktisan suatu media memililiki kualitaskepraktisan yang tinggi jika pengguna mempertimbangkan media tersebut dapat digunakan dan realitanyamudah untuk menggunakannya. Penelitian ini menggunakan model R&D (Research and Development)Borg dan Gall hanya sampai tahap uji coba awal (preliminary field testing. Sasaran penelitian iniadalah peserta didik SMA Negeri 3 Sidoarjo sebanyak 33 orang dengan jenjang kelas XI MIPA. Mediapermainan zuper abase dapat dikatakan praktis yang ditunjukkan dengan perolehan skor respon pesertadidik yang telah menggunakan media permainan yakni sebesar 78,3670%.Kata kunci: kepraktisan, permainan zuper abase, android, respon peserta didik.

Plant growth-promoting microbes — an industry view

2021 ◽  
Author(s):  
Natalie W. Breakfield ◽  
Dayna Collett ◽  
Michael E. Frodyma
Keyword(s):  
Plant Growth ◽  
Large Scale ◽  
Selection Process ◽  
Cost Effective ◽  
Field Testing ◽  
Product Concept ◽  
Large Scale Field ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Plant Growth Promoting Microbes

Plant growth-promoting microbes can affect the plant microbiome, improving different properties of the plant such as yield and health. Many companies are commercializing these microbes as products called biologicals. Defining the product concept is one of the first and most important steps in making a biological product. Companies can use phenotyping and genotyping approaches to identify the microbe to make into a live bacterial product. Screening usually begins in the laboratory and often moves from high-throughput methods to more time and resource-intensive methods culminating in large scale field testing. Once the microbe is chosen, the fermentation process grows the bacteria to the necessary amounts, while the formulation process ensures a stable product in the desired form such as a liquid or powder. The products must show yield increases in the field over several seasons and conditions, but also must be easy to use and cost-effective to be adopted by farmers and other customers. Tying all these data together from the selection process to test results gives a customer a ‘reason to believe’ for the marketing and launch of a successful product.

scholarly journals Precision Vascular Delivery of Agrochemicals with Micromilled Microneedles (µMMNs)

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Avra Kundu ◽  
Maria Gabriela Nogueira Campos ◽  
Swadeshmukul Santra ◽  
Swaminathan Rajaraman
Keyword(s):  
Electron Microscopy ◽  
Plant Tissue ◽  
Cost Effective ◽  
Field Testing ◽  
Vascular Bundles ◽  
Systemic Delivery ◽  
Pathogen Control ◽  
Initial Results ◽  
Base Width ◽  
Scanning Electron

Abstract We demonstrate use of makerspace techniques involving subtractive microtechnologies to fabricate micromilled microneedles (µMMNs) of stainless steel (SS) for precise delivery of agrochemicals into vascular bundles of plant tissue. Precision delivery is of immense importance for systemic pathogen control in specific areas of plant tissue. Optimization of the micromilling allows for selective removal of SS at the microscale and the microfabrication of a 5 × 5 array of µMMNs having both base width and height of 500 µm to enable precise puncture into the stem of citrus saplings. Atomic Absorption Spectroscopy reveals up to 7.5× increase in the uptake of a therapeutic cargo while Scanning Electron Microscopy reveals that specific sites of the vascular bundle; either xylem or the phloem can be uniquely targeted with customized µMMNs. Such rapid and cost-effective customization with intricate designs along with scalability is enabled by makerspace microfabrication. Additionally, a 19 × 20 array of micromilled mesoneedles has been fabricated and affixed to a paint roller as an applicator system for real-world field testing outside the laboratory. Initial results indicate reliable behavior of the applicator system and the technique can be applied to the systemic delivery of agrochemicals while conserving the loss of the agrochemical with increased application efficiency.

scholarly journals Near-Field Immunity Test Method for Fast Radiated Immunity Test Debugging of Automotive Electronics

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 797 ◽  
Author(s):  
Jawad Yousaf ◽  
Doojin Lee ◽  
JunHee Han ◽  
Hosang Lee ◽  
Muhammad Faisal ◽  
...  
Keyword(s):  
Automotive Industry ◽  
Near Field ◽  
Cost Effective ◽  
Field Testing ◽  
Input Power ◽  
Test Method ◽  
Automotive Electronics ◽  
Test Results ◽  
Electric Power Steering ◽  
Power Steering

This study presents a near-field immunity test (NFIT) method for the fast debugging of radiated susceptibility of industrial devices. The proposed approach is based on the development of an NFIT setup which comprises of developed near-field electric and magnetic field probes and device under test (DUT). The developed small-size and handy near-field testing probes inject the high electric (up to 1000 V/m) and magnetic (up to 2.4 A/m) fields on the DUT in the radar pulse ranges (1.2 to 1.4 GHz and 2.7 to 3.1 GHz) with the lower fed input power (up to 15 W) from the power amplifier in the developed NFIT setup. The proof of concept is validated with the successful near-field immunity debugging of an electric power steering (EPS) device used in the automotive industry with the developed NFIT setup. The radiated susceptibility debugging test results of developed NFIT method and conventional method of ISO 11452-2 test setup turned out to be close to each other for the tested DUT in immunity performance. The proposed procedure has advantages of industry usefulness with fast, handy, and cost-effective radiated immunity debugging of the DUT without the requirement of large antenna, high-power amplifiers, optical DUT connecting harness, and an anechoic chamber as needed in ISO 11452-2 standard setup for the debugging analysis.

Cost-Effective Architecture for Integrating Look-Ahead Information for Commercial Vehicle Powertrains

2015 ◽  
Author(s):  
Xubin Song ◽  
Zhijun Tang ◽  
Rajeev Verma
Keyword(s):  
System Architecture ◽  
System Integration ◽  
Commercial Vehicle ◽  
Cost Effective ◽  
Field Testing ◽  
System Optimization ◽  
Mobile Platforms ◽  
Powertrain System ◽  
Look Ahead ◽  
Data Source

Fuel saving technology can be pursued in many different forms, such as gearing mechanism improvement to powertrain system optimization. With the increasing maturity and availability of sensing technologies such as GPS, motion-detecting sensors, and wireless communications, the vehicle powertrain system design community is embracing these information sources by developing mobile platforms for efficiency improvement. In this paper, a self-contained system architecture is presented that integrates the digital map database, radar senor, V2x, and mobile traffic data from the wireless network for commercial vehicle driver assistance. Each data source utilizes a different communication protocol. As such, the system integration can be challenging and may involve significant investment including engineering development if a suitable system architecture is not defined. This paper introduces a single board computer (SBC) based architecture to integrate these sensors with the powertrain system as a cost-effective implementation. Finally, some field testing data will be presented to show the benefits of using look-ahead information for improving the freight efficiency.

scholarly journals In Situ Processing and Efficient Environmental Detection iSPEED of pests and pathogens of trees using point-of-use real-time pcr

2019 ◽  
Author(s):  
Arnaud Capron ◽  
Don Stewart ◽  
Kelly Hrywkiw ◽  
Kiah Allen ◽  
Nicolas Feau ◽  
...  
Keyword(s):  
Real Time ◽  
Dna Extraction ◽  
Room Temperature ◽  
Cost Effective ◽  
Field Testing ◽  
Phytophthora Ramorum ◽  
Infected Leaf ◽  
Dna Testing ◽  
Point Of Use

AbstractThe increase in global trade is responsible for a surge in foreign invasive species introductions across the world. Early detection and surveillance activities are essential to prevent future invasions. Molecular diagnostics by DNA testing has become an integral part of this process. However, for environmental applications, there is a need for cost-effective and efficient point-of-use DNA testing that would allow for the collection of results in real-time away from laboratory facilities. To achieve this requires the development of simple and fast sample processing and DNA extraction, room-temperature stable reagents and a portable instrument. We conducted a series of tests using a crude buffer-based DNA extraction protocol and lyophilized, pre-made, reactions to address the first two requirements. We chose to demonstrate the use of this approach with organisms that cover a broad spectrum of known undesirable insects and pathogens: the ascomycete Sphaerulina musiva, the oomycete Phytophthora ramorum, the basidiomycetes Cronartium ribicola and Cronartium comandrae and the insect Lymantria dispar. Tests performed from either infected leaf material or spores (pathogens), or legs and antenna (insects). We were able to obtain positive amplification for the targeted species in all the samples tested. The shelf-life of the lyophilized reactions was assessed, confirming the stability of over a year at room temperature. Finally, successful tests conducted with portable thermocyclers and disposable plastics, demonstrating the suitability of the method, named in Situ Processing and Efficient Environment Detection (iSPEED), for field testing. This kit is ideally adapted to field testing as it fits in a backpack and can be carried to remote locations.

scholarly journals Farmers’ Perceptions of Information and Communication Technology (ICT) Use in Extension Service Delivery in Northern Region, Ghana

2019 ◽  
Vol 6 (1) ◽  
pp. 21-29
Author(s):  
Francis K. OBENG ◽  
Salifu GUMAH ◽  
Stephen Mintah
Keyword(s):  
Service Delivery ◽  
Mobile Phone ◽  
Cost Effective ◽  
Northern Region ◽  
Extension Service ◽  
Positive Effects ◽  
Use Of Time ◽  
Region Data ◽  
Information And Communication ◽  
Time And Energy

Extension methodologies for communicating technologies to farmers have evolved over the past 200 years from so-called traditional methodologies to more advanced and technology-based methodologies that enable extension staff to reach many people within the shortest possible time in a more effective and efficient way. Though traditional methods are still relevant and effective, current trends require the use of more innovative and cost-effective methodologies.  This paper examined the perceptions of farmers on the use of ICTs in Extension Service delivery in the Northern Region of Ghana. Ninety farmers were randomly sampled from 6 communities in 6 districts in the region. Data was collected using semi-structured questionnaire. A 5-point Likert scale was used to determine farmers’ perceived effects of ICT on extension delivery. Data were analysed using means, standard deviations, t-test, frequencies and percentages. The most widely used ICTs by farmers are radio, mobile phone and television. Farmers perceive the use of mobile phone to have resulted in timely delivery of information, increased interaction among farmers and between farmers and AEAs and effective use of time and energy by AEAs. The use of radio has improved adoption of technologies and enhanced farmers’ awareness of innovations. It is concluded mobile phone, radio and television are used widely in the region and have very positive effects on extension service delivery.  

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