Microbiology safety cabinet disinfection procedures using formaldehyde have been tested. Tubercle bacilli were killed by concentrations of formaldehyde obtained by heating commercial formalin irrespective of whether the bacilli were in the cabinet free space or above the prefilters. However, Bacillus stearothermophilus spore papers for for the testing of low temperature steam/formaldehyde steri...

choice for pharmaceutical industry process systems. Its high mechanical strength and low coefficient of thermal expansion allow components to be sterilised or sanitised using various mediums and at high temperatures. Concerns about stainless steel systems – such as rouging in high purity water, metallic ion contamination and inner surface finishes – which require post-installation maintenance a...

That the thermal resistance of at least some types of microorganisms is increased when heated in hypertonic solutions of various carbohydrates is now well established. A review of the literature concerning this subject has been presented by Fay (1934). This author found that sucrose and glucose in concentrations above 0.75 M were protective for Escherichia coli. No protection was obtained with ...

To improve our understanding of the molecular mechanisms underlaying seed priming, RNA transcriptome analysis was performed using primed and non-primed seeds Silene sendtneri. Seed priming by submergence in 1% silicic acid for 24h at 4°C, followed rinsing with sterilised water desiccation to original moisture content. sendtneri is a species no sequenced genome annotation de novo assembly done a...

Only scanty reports are available on endophytic fungal associations in Achyranthes aspera Linn. Hence in this study a total of 504 isolates belonging to ten different species of fungi were isolated from asymptomatic, surface sterilised segments of leaf, stem and root of A. aspera collected from different locations of Kerala, India. Among the isolates ascomycetes were most prevalent. Colonisatio...

The success of the postpartum sterilisation campaign at Paarl Hospital, CP, irrefutably supports the claim that a quality family planning programme can in itself reduce fertility. In 1971 only 10% of women undergoing sterilisation had 4 or fewer children--this incidence increased to 71% in 1986. Women with more than 10 children are now very rarely found--in 1970 they still accounted for 20% of ...

The possibility of a diagnosis of diabetes usually arises on the finding of a reducible substance in the urine ; glucose is but one of these, and some test must be made to differentiate it from the others, of which the most frequent are :? Uric acid, hippuric acid, salicyluric acid present in salicylate therapy, glycuronic acid present after chloral, etc. ; alkapton, creatinine, lactose during ...

Stress experiments performed on a population of sterilised nematode worms (Caenorhabditis elegans) show a clear hormesis effect after short exposure and clear debilitation effects after long exposure to heat shock. An intermediate duration of exposure results in a mixture of these two effects. In this latter case the survival curves for populations in the stress and control groups intersect. In...