scholarly journals Improving the efficiency of the roller screen with circular disks

2018 ◽  
Vol 224 ◽  
pp. 02068
Author(s):  
Alexander Kondratiev ◽  
Sergei Smorodov ◽  
Vitaliy Antsev ◽  
Andrei Kirichek
Keyword(s):  
Comparative Evaluation ◽  
Test Bench ◽  
Screen Test ◽  
Screening Process ◽  
Working Surface ◽  
Efficiency And Productivity ◽  
Circular Disks ◽  
Roller Screen

The design, operation and technical characteristics of the roller screen test bench with movable aprons are described. The results of studies of gravel screening on a roller device with circular disks are presented. The rational parameters of the roller screen plate are obtained: the speed of the rollers with disks, working surface canting angle, the speed of the aprons. Comparative evaluation of the efficiency and productivity of the screening process at the devices with circular and multisided disks is given.

scholarly journals Surface Analysis of Railway Buffers Heads Covered with Bronze Using Laser Cladding

2017 ◽  
Vol 17 (2) ◽  
pp. 89-94 ◽  
Author(s):  
M. Sitarz ◽  
A. Kurc-Lisiecka ◽  
W. Gamon
Keyword(s):  
Surface Analysis ◽  
Laser Cladding ◽  
Test Bench ◽  
Mechanical Analysis ◽  
Point Of View ◽  
Test Results ◽  
Tribological Tests ◽  
Working Surface

Abstract Railway buffers during the operation are staying in almost permanent contact with each other, creating friction node in the point of contact of two railway buffer heads. In consequence of overcoming track curves, turnouts and unevenness of track, the railway buffer heads moves relative to each other causing friction, which results in its wear. When the wear is excessive, it might be a reason to withdrawn vehicle from service, it causes flattening of buffer head, and in consequence its abnormal cooperation. To avoid this phenomenon the buffer heads should be covered with graphitized grease, but this method has many disadvantages. Accordingly, it was found that it would be beneficial to cover the buffer head with bronze using laser cladding. In this article the metallographic and mechanical analysis of the newly created top layer of railway buffer head are presented. In article the results from tribological tests conducted on Amsler test bench are also presented. Based on test results described in article concluded that the layer of bronze coat on working surface of railway buffer head can be beneficial from operational point of view.

scholarly journals Comparative Evaluation of Seven Commercial Tests for Detection of Heterophile Antibody in Infectious Mononucleosis

1992 ◽  
Vol 3 (1) ◽  
pp. 23-26
Author(s):  
Martin Skulnick ◽  
Donald E Low ◽  
Andrew E Simor ◽  
Mohan Patel ◽  
Pauline George ◽  
...  
Keyword(s):  
Clinical Diagnosis ◽  
Infectious Mononucleosis ◽  
Comparative Evaluation ◽  
Cost Effective ◽  
Screen Test ◽  
Commercial Test ◽  
Heterophile Antibody ◽  
Cost Effective Method ◽  
Differential Test

Detection of heterophile antibodies in infectious mononucleosis is the most rapid and cost-effective method for confirming the clinical diagnosis of the disease. This study compared seven commercial test kits (the Oxoid Infectious Mononucleosis Kit [Oxoid Ltd], Immunoscan Im-Latex [Baxter Travenol], Mono-Latex [Wampole Laboratories], Monospot and Im Screen Test [Ortho Diagnostics], Immunoscan Im-RBC Test [Baxter Travenol], and Infectious Mononucleosis Test [NCS Diagnostics]) to the Davidsohn differential test. All of the kits were shown to be acceptable for use, with specificities and sensitivities greater than 96.5% and 95.5%, respectively.

Interdisciplinary Therapy Assessments for the Older Adult

2012 ◽  
Vol 17 (1) ◽  
pp. 11-16
Author(s):  
Lynn Chatfield ◽  
Sandra Christos ◽  
Michael McGregor
Keyword(s):  
Older Adults ◽  
Health Care ◽  
Standardized Testing ◽  
Health Care Providers ◽  
Outcome Measurement ◽  
Care Providers ◽  
Patient Centered ◽  
Screening Process ◽  
Evidenced Based ◽  
Changing Economy

In a changing economy and a changing industry, health care providers need to complete thorough, comprehensive, and efficient assessments that provide both an accurate depiction of the patient's deficits and a blueprint to the path of treatment for older adults. Through standardized testing and observations as well as the goals and evidenced-based treatment plans we have devised, health care providers can maximize outcomes and the functional levels of patients. In this article, we review an interdisciplinary assessment that involves speech-language pathology, occupational therapy, physical therapy, and respiratory therapy to work with older adults in health care settings. Using the approach, we will examine the benefits of collaboration between disciplines, an interdisciplinary screening process, and the importance of sharing information from comprehensive discipline-specific evaluations. We also will discuss the importance of having an understanding of the varied scopes of practice, the utilization of outcome measurement tools, and a patient-centered assessment approach to care.

Comparison of In-the-Ear and Over-the-Ear Hearing Aid Fittings

1986 ◽  
Vol 51 (4) ◽  
pp. 362-369 ◽  
Author(s):  
Donna M. Risberg ◽  
Robyn M. Cox
Keyword(s):  
Hearing Aids ◽  
High Frequency ◽  
Comparative Evaluation ◽  
Speech Intelligibility ◽  
Hearing Aid ◽  
Hearing Aid Fitting ◽  
The Difference ◽  
Functional Gain ◽  
The Relationship

A custom in-the-ear (ITE) hearing aid fitting was compared to two over-the-ear (OTE) hearing aid fittings for each of 9 subjects with mild to moderately severe hearing losses. Speech intelligibility via the three instruments was compared using the Speech Intelligibility Rating (SIR) test. The relationship between functional gain and coupler gain was compared for the ITE and the higher rated OTE instruments. The difference in input received at the microphone locations of the two types of hearing aids was measured for 10 different subjects and compared to the functional gain data. It was concluded that (a) for persons with mild to moderately severe hearing losses, appropriately adjusted custom ITE fittings typically yield speech intelligibility that is equal to the better OTE fitting identified in a comparative evaluation; and (b) gain prescriptions for ITE hearing aids should be adjusted to account for the high-frequency emphasis associated with in-the-concha microphone placement.

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