Temperament in Bach’s Well-tempered clavier: a historical survey and a new evaluation according to dissonance theory

After a historical survey of temperament in Bach’s Well-Tempered Clavier by Johann Sebastian Bach, an analysis of the work has been made by applying a number of historical good temperaments as well as some recent proposals. The results obtained show that the global dissonance for all preludes and fugues in major keys can be minimized using the Kirnberger II temperament. The method of analysis used for this research is based on the mathematical theories of sensory dissonance, which have been developed by authors such as Hermann Ludwig Ferdinand von Helmholtz, Harry Partch, Reinier Plomp, Willem J. M. Levelt and William A. Sethares

Public Attitudes Survey 2005 (PDF 558 KB)

Public Attitudes to Health and Social Services in Northern Ireland

Survey of Injecting Drug Users (PDF 39 KB)

Summary of the findings for 2003/04 in Northern Ireland

Secondary Analysis of the 2003 Young Persons Behaviour and Attitudes Survey

(Drugs, Solvents and Alcohol)

Hepatitis C prevalence and risk factors in hemodialysis patients in Central Brazil: a survey by polymerase chain reaction and serological methods

An hemodialysis population in Central Brazil was screened by polymerase chain reaction (PCR) and serological methods to assess the prevalence of hepatitis C virus (HCV) infection and to investigate associated risk factors. All hemodialysis patients (n=428) were interviewed in eight dialysis units in Goiânia city. Blood samples were collected and serum samples screened for anti-HCV antibodies by an enzyme-linked immunosorbent assay (ELISA). Positive samples were retested for confirmation with a line immunoassay (LIA). All samples were also tested for HCV RNA by the PCR. An overall prevalence of 46.7% (CI 95%: 42-51.5) was found, ranging from 20.7% (CI 95%: 8.8-38.1) to 90.4% (CI 95%: 79.9-96.4) depending on the dialysis unit. Of the 428 patients, 185 were found to be seropositive by ELISA, and 167 were confirmed positive by LIA, resulting in an anti-HCV prevalence of 39%. A total of 131 patients were HCV RNA-positive. HCV viremia was present in 63.5% of the anti-HCV-positive patients and in 10.3% of the anti-HCV-negative patients. Univariate analysis of risk factors showed that the number of previous blood transfusions, transfusion of blood before mandatory screening for anti-HCV, length of time on hemodialysis, and treatment in multiple units were associated with HCV positivity. However, multivariate analysis revealed that blood transfusion before screening for anti-HCV and length of time on hemodialysis were significantly associated with HCV infection in this population. These data suggest that nosocomial transmission may play a role in the spread of HCV in the dialysis units studied. In addition to anti-HCV screening, HCV RNA detection is necessary for the diagnosis of HCV infection in hemodialysis patients.

Survey of Injecting Drug Users - 2002/2003 (PDF 152 KB)

Summary of the findings for 2002/03 from the five collaborating centres in NI

Survey of Injecting Drug Users - 2002 (PDF 165 KB)

Summary of the findings for 2002 from the five collaborating centres in NI

Health Survey Northern Ireland: First Results 2013/14

This report presents results from the 2013/14 Health Survey Northern Ireland. It includes information on general health, mental health and wellbeing, diet and nutrition, physical activity, obesity, smoking, drinking and sexual health. Differences reported are those that are statistically significant at the 95% confidence level. The fieldwork for this survey was conducted from April 2013 to March 2014. Results are based on responses of 4,509 individuals, with a response rate of 66% achieved. åÊ