Math for Real: How to Check Digits

2010 ◽  
Vol 16 (2) ◽  
pp. 128
Author(s):  
Alyssa M. Hoslar
Keyword(s):  

When an account or product number is typed into a computer, there is often a quick way to check that the number had been entered correctly. One way is with a check digit, which is an extra digit at the end of the account number, representing the ones digit of the sum of the account digits, or some other formula.

2007 ◽  
Vol 7 ◽  
pp. 83-86 ◽  
Author(s):  
Benoît Martin ◽  
Eve Lapouble ◽  
Yohan Chaix

The mutation extra-toes (Gli3Xt-J) on chromosome (Chr) 13 of the mouse is known to be involved in the development of the skeleton. The only visible manifestation is the presence of an extra digit on each hind foot. Here we report evidence from several experiments that Gli3XtJ/+mice weigh more than littermate Gli3+/+mice, suggesting an effect on body weight ofGli3or of a gene tightly linked to it on Chr 13. Four independent experiments in different environments were conducted on mice with different genetic backgrounds derived from the C3XtEso Gli3Xt-J/+Eso/+linkage testing strain and the JE/Le strain at adult age. The analyses have shown an association between the Gli3Xt-Jallele and a body weight increase of about 6.5%. This effect is genetically dominant. It would appear that if the gene of interest is notGli3itself, it must be very close to this locus. Indeed, the expected size for this fragment is 7.9 ± 5.3 cM. The manifestation of this gene, observed in two animal facilities and on different genetic backgrounds, is consistent with the idea that the effect of the gene(s) is displayed in a stable manner. It accounts for a variation of 6.5% of body weight.


1996 ◽  
Vol 5 (2) ◽  
pp. 132-133 ◽  
Author(s):  
Y. Fortems ◽  
L. De Smet ◽  
G. Fabry
Keyword(s):  

2020 ◽  
Author(s):  
Matt Sperling ◽  
Ryan Relich ◽  
Bryan Schmitt ◽  
Drew Bell ◽  
Lauren Cooper

AbstractReal-time reverse transcription polymerase chain reaction (rRT-PCR) is the primary method used for the detection and diagnosis of infections caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Since SARS-CoV-2’s entrance into the United States, numerous clinical laboratories and in vitro diagnostic companies have developed rRT-PCR assays, some requiring specialized materials and reagents. One such assay includes the cobas® SARS-CoV-2 Qualitative Assay for use on the cobas® 6800/8800 (Roche Molecular Systems, Inc.). Since initiation of this assay at our facility, our ability to run testing at full capacity has been limited due to restricted supply of the omni cobas® Processing Plate (Product Number 05534917001), a 96 deep well plate used for all sample processing and total nucleic acid extraction via MagNA Pure magnetic beads. To work around this limiting factor, we have successfully designed and tested a cleaning protocol utilizing the widely available laboratory resources of bleach, ethyl-alcohol and autoclaving, for omni cobas® Processing Plate re-use.


2019 ◽  
Vol 4 (6) ◽  
pp. 344-350
Author(s):  
Geke A. W. Denissen ◽  
Liza N. van Steenbergen ◽  
Wouter T. Lollinga ◽  
Nico J. J. Verdonschot ◽  
Berend W. Schreurs ◽  
...  

In the Dutch Arthroplasty Register (LROI), the product and batch number of prosthetic components and cement are registered for traceability. Registration of the product number provides opportunities to extend the information about a specific prosthesis. All product numbers used from the beginning of the registration in 2007 were characterized to develop and maintain an implant library. The Scientific Advisory Board developed a core-set that contains the most important characteristics needed to form an implant library. The final core-set contains the brand name, type, coating and material of the prosthesis. In total, 35 676 product numbers were classified, resulting in a complete implant library of all product numbers used in the LROI. To improve quality of the data and increase convenience of registration, the LROI implemented barcode scanning for data entry into the database. In 2017, 82% of prosthetic components and cement stickers had a GS1 barcode. The remaining product stickers used HIBCC barcodes and custom-made barcodes. With this implant library, implants can be grouped for analyses at group level, e.g. evaluation of the effect of a material of a prosthesis on survival of the implant. Apart from that, the implant library can be used for data quality control within the LROI database. The implant library reduces the registration burden and increases accuracy of the database. Such a system will facilitate new designs (learning from the past) and thus improve implant quality and ultimately patient safety. Cite this article: EFORT Open Rev 2019;4 DOI: 10.1302/2058-5241.4.180063


1992 ◽  
Vol 186 (1) ◽  
pp. 27-32 ◽  
Author(s):  
D. Macias ◽  
Y. Ga�an ◽  
J. M. Hurle
Keyword(s):  

2013 ◽  
Vol 52 (6) ◽  
pp. 754-756 ◽  
Author(s):  
Emre Hocaoğlu ◽  
Ömer Berköz ◽  
Yunus Doğan ◽  
Türker Özkan
Keyword(s):  

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