37 research outputs found
Institusioneel vasgeloop? Die Nederduitsch Hervormde Kerk van Afrika
The Netherdutch Reformed Church (Nederduitsch Hervormde Kerk van Afrika) finds itself in a precarious situation. It could be described as a watershed moment in the life of this denomination. The impasse developed due to various factors such as the loss of membership, the economic situation, ecumenical isolation and various other influences, which eventually resulted in a strong institutionalised organisation. Institutionalisation necessarily resulted in a shift of focus from the essence of being Church towards institutional continuation. As a result, the organic growth of the church suffered. This article investigates the institutionalism of the Netherdutch Reformed Church from an open (living) systems perspective, thereby identifying the dysfunctionality between form and function and ending with certain perspectives in respect of a change in focus by the church to realise the true essence of being Church of Jesus Christ
Bacteria display differential growth and adhesion characteristics on human hair shafts
Apart from the skin surface, hair represents a significant tissue component with a capacity of bacterial interactions. New information can be obtained about hair function through the characterization of bacterial adherence, colonization, and responses to hair shafts per se. In this proof-of-principle study, we examine the growth kinetics of Gram-positive Staphylococcus aureus and Staphylococcus epidermidis, and Gram-negative Pseudomonas aeruginosa and Escherichia coli in the presence of human hair shafts. We explore the ability of these bacteria to adhere to and colonize hair shaft surfaces, as well as the resulting impact on the hair's surface morphology. We show that hair shafts inhibit the growth of Gram-positive S. aureus and S. epidermidis, while the growth kinetics of P. aeruginosa and E. coli remain unaffected. Scanning electron microscope analysis and steeping studies show that P. aeruginosa and E. coli to adhere to and colonize on human hair shafts without significantly affecting the hair shaft's surface morphology. P. aeruginosa produced a substantial amount of biofilm on the hair shaft surfaces, while E. coli specifically inhabited the edges of the cuticle scales. Taken together, our results demonstrate differences in bacterial responses to human hair shafts, which may provide novel insights into hair and scalp health