Assays for resistance assessment by binding competition

ABSTRACT Resistance to rifampin (rifampicin), isoniazid, and streptomycin of 69 Mycobacterium tuberculosis isolates was analyzed by an in-house method based on mycobacteriophage D29 and a colorimetric micromethod. Both methods showed sensitivity and specificity values ranging from 93% to 100%. These simple methods offer an option for drug resistance assessment of M. tuberculosis.

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Rail-to-Earth Resistance Assessment for a Medium Capacity Transit System With Continuous Negative Rails by Potential Measurement

2016 Joint Rail Conference ◽

10.1115/jrc2016-5810 ◽

2016 ◽

Author(s):

Bih-Yuan Ku ◽

Ching Liang Wu ◽

Chun-Fu Lin

Keyword(s):

Unit Length ◽

Point Of View ◽

Voltage Sag ◽

Rapid Transit ◽

Transit System ◽

Potential Measurement ◽

Qualitative And Quantitative ◽

Ground Resistance ◽

Traction Current ◽

Resistance Assessment

This paper presents the development of a qualitative and quantitative assessment of the resistance to ground for the electrically continuous negative rails of a medium capacity transit line of the Taipei Rapid Transit System. Using synchronous potential measurements at three stations we examine potential profiles to locate potential rail sections with low resistance to ground qualitatively. Also the voltage sag values are used to quantitatively calculate rail-to-ground resistance per unit length. The approach presented in this paper requires only voltage measurements with the traction current as the energization source. Thus, this approach can be performed as a routine maintenance procedure to obtain rail-to-ground resistance values from a system-wide point of view.

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A new approach to the buckling resistance assessment of pressurized spherical shells

Shell Structures: Theory and Application ◽

10.1201/b15684-43 ◽

2013 ◽

pp. 179-182 ◽

Cited By ~ 1

Author(s):

P Błażejewski ◽

J Marcinowski

Keyword(s):

Spherical Shells ◽

New Approach ◽

Buckling Resistance ◽

Resistance Assessment

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Modified viscosity consideration method in foil resistance assessment

TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE ◽

10.24937/2542-2324-2018-4-386-56-61 ◽

2018 ◽

Vol 4 (386) ◽

pp. 56-61

Author(s):

А. Yakovlev ◽

◽

O. Orlov ◽

A. Achkinadze ◽

I. Boroday ◽

...

Keyword(s):

Resistance Assessment

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In vitro water resistance evaluation of a bioactive sunscreen containing distinct film/ barrier-forming agents

Journal Biomedical and Biopharmaceutical Research ◽

10.19277/bbr.17.2.241 ◽

2020 ◽

Vol 17 (2) ◽

pp. 1-14

Author(s):

Chin Yi Sul ◽

Ana Lucia Morocho-Jacomel ◽

Fabiana Vieira Lima ◽

Gabriela Argollo Marques ◽

Wendi Lucia Avila Rodriguez ◽

...

Keyword(s):

Diffuse Reflectance ◽

Water Resistance ◽

Protection Factor ◽

In Vitro Method ◽

Before And After ◽

Bioactive Ingredients ◽

Resistance Assessment ◽

Sun Protection Factor ◽

Resistance Tests

The use of functional bioactive ingredients and the property of water resistance are differentials in the choice of more effective and safer sunscreens. Water-resistance tests are expensive, time-consuming, and usually performed on subjects that expose them to irradiation and long immersion times. Thus, the study of in vitro water resistance using different film/ barrier-forming agents is relevant for obtaining sunscreen resistant to rinsing. We aimed to evaluate the water resistance of a rutin-based bioactive sunscreen containing distinct film/barrier-forming agents by an in vitro method. The in vitro water resistance assessment (% WRR) was carried out in a water bath. In vitro sun protection factor (SPF), critical A, (nm), UVA/UVB ratio, and UVA protection factor (UVA-PF(0)) were evaluated before and after rinsing using a diffuse reflectance spectrophotometer with integration sphere. The formulation with dimethicone showed higher values of SPF after rinsing and achieved the requirement of % WRR greater than 50%. All formulations showed similar variations for all other parameters. The results highlighted the property of water resistance provided by the dimethicone, indicating that this emollient is an interesting ingredient choice for sunscreens.

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Ballistic Limit Estimation Approaches for Ballistic Resistance Assessment

Defence Science Journal ◽

10.14429/dsj.70.14122 ◽

2020 ◽

Vol 70 (1) ◽

pp. 82-89

Author(s):

Beya Tahenti ◽

Frederik Coghe ◽

Rachid Nasri

Keyword(s):

Extreme Values ◽

Impact Testing ◽

Estimation Methods ◽

Experimental Sample ◽

Ballistic Limit ◽

Ballistic Resistance ◽

Limit Velocity ◽

Resistance Assessment ◽

Ballistic Limit Velocity ◽

Set Up

The armour technologist conducts ballistic impact testing either for evaluating armour materials and systems or for studying material’s defeating mechanism. Most standards make use of the ballistic limit velocity for ballistic assessment. This is the bullet impact velocity that leads to the protection perforation in 50 per cent of the cases. Various models have been emerged to estimate this key metric. The present article summarises the popular models developed for ballistic limit estimation. An attempt is made to point out models’ strength and weakness. First, the experimental set-up used for that goal is displayed. Next, a concise overview of ballistic limit estimation methods is presented. Lastly, a discussion is dedicated to model’s comparison and analysis. This literature survey reveals that the main drawback of already existing methods is that they are purely statistical. Moreover, existing methods are based on the normality assumption of perforation velocities which tends from -infinity to infinity. The main conclusion of this survey is that the presented methods offer a comparable accuracy in estimating the ballistic limit velocity. However, a given variability is remarked when extreme values estimation is of interest, impact velocities leading to low and high perforation probability. Finally, existing models’ performances decay with the reduction of the experimental sample size which represent a constraining requirement in ballistic resistance assessment.

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