Freeze-drying of Aegyptianella pullorum

Heparinized whole blood, parasitized with Aegyptianella pullorum, was collected from 2 fowls. Buffered lactose peptone (BLP) was added v/v as a stabilizer and the mixture lyophilized in 2ml aliquots after rapid or slow freezing. At different stages during the freeze-drying process, as well as after lyophilization and reconstitution with I ,8 ml of sterile water, samples were taken and injected into pullets. Infectivity was maintained throughout. However, the prepatent period was lengthened after freezing and particularly after lyophilization when there was some loss of viability.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.lmchunu2014mn201

Die opleiding van bedryfsielkundiges aan die Univeristeit van Stellenbosch

The original publication is available at http://www.sajip.co.zaDie aanbieding van Bedryfsielkunde aan die Universiteit van Stellenbosch gaan sover terug as 1943 toe daar binne die Departement Sielkunde met 'n afsonderlike kursus in Bedryfsielkunde vir B.Comm.-studente 'n begin gemaak is. Hierdie kursus is in 1949 uitgebrei tot die derde jaar, toe dit moontlik geword het om 'n B.Comm.-graad met Bedryfsielkunde as een van die hoofvakke te behaal.Publishers' Versio

Die opleiding van bedryfsielkundiges aan die universiteit van Stellenbosch.

Die aanbieding van Bedryfsielkunde aan die Universiteit van Stellenbosch gaan sover terug as 1943 toe daar binne die Departement Sielkunde met 'n afsonderlike kursus in Bedryfsielkunde vir B.Comm.-studente 'n begin gemaak is. Hierdie kursus is in 1949 uitgebrei tot die derde jaar, toe dit moontlik geword het om 'n B.Comm.-graad met Bedryfsielkunde as een van die hoofvakke te behaal

Reason : free minds and free markets

The lack of formal models for describing low-level interaction restricts programmers to interactors provided by toolkits. It impedes the construction of highly interactive systems and the design of new interaction styles, such as multimodal interaction. This article reports on our experience with formalising low-level graphical interaction. We propose primitives for event specification and handling that can be used along with Petri nets to model such interactions. We then show how multimodal interactions can be built from monomodal ones by combining those models. This is exemplified by an experimental two-handed graphical editor that has been built using the proposed model

Regulation of expression of mammalian gonadotrophin-releasing hormone receptor genes

Gonadotrophin-releasing hormone (GnRH), acting via its cognate GnRH receptor (GnRHR), is the primary regulator of mammalian reproductive function, and hence GnRH analogues are extensively used in the treatment of hormone-dependent diseases, as well as for assisted reproductive techniques. In addition to its established endocrine role in gonadotrophin regulation in the pituitary, evidence is rapidly accumulating to support the expression and functional roles for two forms of GnRHR (GnRHR I and GnRHR II) in multiple and diverse extra-pituitary mammalian tissues and cells. These findings, together with findings indicating that mutations of the GnRHR are linked to the disease hypogonadotrophic hypogonadism and that GnRHRs play a direct role in neuronal migration and reproductive cancers, have presented new therapeutic targets and intensified research into the structure, function and mechanisms of regulation of expression of GnRHR genes. The present review focuses on the current knowledge on tissue-specific and hormonal regulation of transcription of mammalian GnRH receptor genes. Emerging insights, such as the discovery of diverse regulatory mechanisms in pituitary and extra-pituitary cell types, nonclassical mechanisms of steroid regulation, the use of composite elements for cell-specific expression, the increasing profile of hormones involved in regulation, the complexity of kinase pathways that target the GnRHR I gene, as well as species-differences, are highlighted. Although further research is necessary to understand the mechanisms of regulation of expression of GnRHR I and GnRHR II genes, the GnRHR is emerging as a potential target gene for facilitating cross-talk between neuroendocrine, immune and stress-response systems in multiple tissues via autocrine, paracrine and endocrine signalling

Die opleiding van bedryfsielkundiges aan die Universiteit van Stellenbosch

CITATION: Augustyn, J.C.D., et al. 1978. Die opleiding van bedryfsielkundiges aan die universiteit van Stellenbosch. SA Journal of Industrial Psychology / SA Tydskrif vir Bedryfsielkunde : 1-6, doi: 10.4102/sajip.v0i0.301The original publication is available at http://www.sajip.co.zaDie aanbieding van Bedryfsielkunde aan die Universiteit van Stellenbosch gaan sover terug as 1943 toe daar binne die Departement Sielkunde met 'n afsonderlike kursus in Bedryfsielkunde vir B.Comm.-studente 'n begin gemaak is. Hierdie kursus is in 1949 uitgebrei tot die derde jaar, toe dit moontlik geword het om 'n B.Comm.-graad met Bedryfsielkunde as een van die hoofvakke te behaal.http://www.sajip.co.za/index.php/sajip/article/view/301Publisher's versio

Type II Gonadotropin-Releasing Hormone Receptor Transcripts in Human Sperm

NatuurwetenskappeBiochemiePlease help us populate SUNScholar with the post print version of this article. It can be e-mailed to: [email protected]