Detection of degraded, adulterated, and falsified ceftriaxone using paper analytical devices

2019 ◽  
Vol 11 (37) ◽  
pp. 4727-4732 ◽  
Author(s):  
Sarah L. Bliese ◽  
Mercy Maina ◽  
Phelix Were ◽  
Marya Lieberman
Keyword(s):  
Paper Test ◽  
Test Card

A paper test card can distinguish good quality ceftriaxone from ceftriaxone that has been thermally degraded, adulterated, or falsified.

scholarly journals Green design of a paper test card for urinary iodine analysis

PLoS ONE ◽  
2017 ◽  
Vol 12 (6) ◽  
pp. e0179716 ◽  
Author(s):  
Nicholas M. Myers ◽  
Ivan C. Leung ◽  
Sean W. McGee ◽  
Kathleen Eggleson ◽  
Marya Lieberman
Keyword(s):  
Urinary Iodine ◽  
Green Design ◽  
Paper Test ◽  
Test Card

Paper test card for detection of adulterated milk

2017 ◽  
Vol 9 (38) ◽  
pp. 5674-5683 ◽  
Author(s):  
Jamie L. Luther ◽  
Valentine Henry de Frahan ◽  
Marya Lieberman
Keyword(s):  
Sensitivity And Specificity ◽  
Paper Test ◽  
Test Card

The MilkPAD can colorimetrically detect a variety of starches, urea, glucose, and sucrose with greater than 90% sensitivity and specificity.

Lab on paper: assay of beta-lactam pharmaceuticals by redox titration

2019 ◽  
Vol 11 (37) ◽  
pp. 4741-4750 ◽  
Author(s):  
Nicholas M. Myers ◽  
Mercy W. Maina ◽  
Phelix Makoto Were ◽  
Rakhi Karwa ◽  
Sonak D. Pastakia ◽  
...  
Keyword(s):  
Beta Lactam ◽  
Paper Test ◽  
Redox Titration ◽  
Test Card

This paper test card can identify ampicillin or amoxicillin formulations that contain <90% of the stated API content.

scholarly journals saltPAD: A New Analytical Tool for Monitoring Salt Iodization in Low Resource Settings

10.5772/62919 ◽  
2016 ◽  
Vol 3 ◽  
pp. 5
Author(s):  
Nicholas M. Myers ◽  
Emmerentia Elza Strydom ◽  
James Sweet ◽  
Christopher Sweet ◽  
Rebecca Spohrer ◽  
...  
Keyword(s):  
South African ◽  
Medical Research Council ◽  
Test Results ◽  
Paper Test ◽  
Low Resource Settings ◽  
Low Resource ◽  
Salt Iodization ◽  
Accuracy And Precision ◽  
Test Card ◽  
Further Development

We created a paper test card that measures a common iodizing agent, iodate, in salt. To test the analytical metrics, usability, and robustness of the paper test card when it is used in low resource settings, the South African Medical Research Council and GroundWork performed independent validation studies of the device. The accuracy and precision metrics from both studies were comparable. In the SAMRC study, more than 90% of the test results (n=1704) were correctly classified as corresponding to adequately or inadequately iodized salt. The cards are suitable for market and household surveys to determine whether salt is adequately iodized. Further development of the cards will improve their utility for monitoring salt iodization during production.

Efficacy of some indigenous plants and a synthetic insecticide for the control of Tribolium castaneum (herbst.) (coleoptera: tenebrionidae)

2016 ◽  
Vol 5 (01) ◽  
pp. 4742
Author(s):  
Mumtaz Akhtar ◽  
Naheed Akhtar* ◽  
Muhammad Arshad ◽  
Naima Iram ◽  
Muhammad Iqbal ◽  
...  
Keyword(s):  
Tribolium Castaneum ◽  
Eucalyptus Camaldulensis ◽  
Ethanol Extract ◽  
Cumulative Effects ◽  
Piper Nigrum ◽  
Paper Test ◽  
Indigenous Plants ◽  
Synthetic Insecticide ◽  
Insecticidal Action ◽  
Coleoptera Tenebrionidae

Research studies were carried out to evaluate insecticidal action of two plant products and a synthetic insecticide on a major stored-product insect, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). The plant species studied were, Piper nigrum and Eucalyptus camaldulensis, whereas methoprene used as synthetic insecticide. Two formulations viz., powder and ethanol extract of each plant and four concentrations (5ppm, 10ppm, 15ppm and 20 ppm) of methoprene were tested. Repellency was tested using the filter paper test whereas mortality, weight loss protection and anti-feedant potential of all treatments was evaluated by using whole maize grains. Our results were highly significant as compared to control however; P. nigrum was more effective as compared to E. camaldulensis. The investigation of cumulative effects of botanical and synthetic insecticide and isolation of active ingredients of botanicals are further issues to be investigated for their inclusion in. I. P. M programs.

scholarly journals Screening for late preeclampsia at 35–37 weeks by the urinary Congo-red dot paper test

2021 ◽  
pp. 1-5
Author(s):  
Moritz Döbert ◽  
Anna-Nektaria Varouxaki ◽  
An Chi Mu ◽  
Argyro Syngelaki ◽  
Kypros H. Nicolaides
Keyword(s):  
Congo Red ◽  
Paper Test

A Punched-Card System for the Laboratory

1962 ◽  
Vol 8 (5) ◽  
pp. 538-545 ◽  
Author(s):  
Nathan Radin
Keyword(s):  
Clinical Chemistry ◽  
Laboratory Data ◽  
Chemistry Laboratory ◽  
Test Card ◽  
Clinical Chemistry Laboratory ◽  
Original Laboratory ◽  
Numerical Order ◽  
Card System ◽  
A Charge ◽  
Laboratory Record

Abstract A punched-card system was developed to simplify the administrative aspects of the clinical chemistry laboratory. In it a three-part requisition and samples are matched and given a laboratory number. The third copy of the original laboratory requsition is a charge card also used as a name file for the day. Prepunched cards, coded for laboratory tests, are used for each test requested. The laboratory number is stamped and punched on each test card. All test cards are then sorted into laboratory test groups, after which the laboratory data and results are recorded on them. Cards are then sorted for laboratory number and rematched with the original laboratory requisitions, which remained in numerical order. Results are then copied directly onto the requisitions. The system is more efficient, less susceptible to error, and simpler than other laboratory record systems.

A “turn-on” small molecule fluorescent sensor for the determination of Al3+ ion in real samples: theoretical calculations, and photophysical and electrochemical properties

2021 ◽  
Vol 45 (39) ◽  
pp. 18400-18411
Author(s):  
Süreyya Oğuz Tümay ◽  
Ahmet Şenocak ◽  
Arif Mermer
Keyword(s):  
Small Molecule ◽  
Fluorescent Sensor ◽  
Theoretical Calculations ◽  
Sample Analysis ◽  
Fluorescence Sensing ◽  
Paper Test ◽  
Real Samples ◽  
Real Sample Analysis ◽  
Turn On

The fluorescence sensing properties of a naphthalene-based acetohydrazide (3) were investigated. A highly selective “turn-on” response was obtained towards Al3+ ions, and this was used for real sample analysis and development of paper test strips.

‘Hand mechanogram’ in epilepsia partialis continua

2021 ◽  
pp. practneurol-2021-003041
Author(s):  
Philippe A Salles ◽  
Alberto J Espay
Keyword(s):  
Low Frequency ◽  
Body Part ◽  
Hand Movements ◽  
Hiv Positive ◽  
Frontal Lesion ◽  
Paper Test ◽  
Epilepsia Partialis Continua ◽  
Involuntary Movements ◽  
Right Hand

Epilepsia partialis continua manifests as low-frequency, rhythmic involuntary movements of a focal body part. We report a young man, HIV-positive and with syphilis, who developed right-hand epilepsia partialis continua associated with a small left-sided cortico-subcortical frontal lesion. A pen and paper test provided ‘mechanographic’ data on frequency, amplitude and rhythmicity of the hand movements, helping distinguish it from other causes of low-frequency repetitive hand movements.

Four Types of Reinforcement Processes in Humans

1979 ◽  
Vol 45 (3) ◽  
pp. 955-962 ◽  
Author(s):  
Yutaka Haruki ◽  
Hideko Ito ◽  
Yoshitaka Oue ◽  
Kaneo Nedate
Keyword(s):  
Graduate Student ◽  
Nonsense Syllable ◽  
Motivational Factor ◽  
The Third ◽  
Fourth Type ◽  
Test Card ◽  
External Reinforcement ◽  
The Subject ◽  
Female Graduate Student

The hypothesis tested was that the type of reinforcement (with regard to the administrator and the recipient) is responsible for differentiating the efficiency of learning in humans. The first type, termed external reinforcement, is one in which the experimenter controls and the subject receives the reinforcement. The second type is self-reinforcement, i.e., the subject controls and receives the reinforcement. The third type ( internal reinforcement) reverses the subject-experimenter relationship employed in the first type. The fourth type ( alien reinforcement) occurs when the experimenter replaces the subject's role played in the second type. In Exp. I, 30 male undergraduates learned to choose as correct a nonsense syllable among four such syllables on each test card. A male graduate student served as the experimenter. Results indicated that the subjects can learn the task under the conditions of the fourth type of reinforcement as well as the first type. The fourth type was superior in its effect on learning. In Exp. II, 19 male undergraduates learned to choose one of the four meaningful words, and a female graduate student served as experimenter. Neither the second nor the third type was effective. It was concluded that the type of reinforcement in which the experimenter is reinforced by himself seems most effective in facilitating learning, due probably to some motivational factor.

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