ambidexterity concept refers to the ability of organizations to address two incompatible objectives. in environmental uncertainty, organizational ambidexterity typically has a positive effect on performance and leads to sustainable competitive advantage, long-term success and survival. nevertheless, it is possible only when the culture enables organizational members to exploit current competenc...

Normal adult human bladder obtained at cystoscopy has been maintained in long-term organ culture. Several media were tested for their ability to maintain viability and normal tissue morphology. The optimum medium was Ham's F-12 nutrient mixture, supplemented with 10% fetal calf serum, hydrocortisone (1 microgram/ml), and FeSO4, (0.45 microgram/ml). During the first 28 days in vitro, epithelial ...

Glial cells in the brain express neurotransmitter receptors and can respond appropriately to application of exogenous neurotransmitters such as glutamate. However, activation of receptors by endogenous, synaptically released transmitter has been difficult to demonstrate directly. Using cell-pair recording in cerebellar cultures from embryonic mouse, it is shown that activation of a cerebellar g...

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per hour elevates serum ascorbate from about 1 mg/dl to a maximum of 4 mg/dl. Again, the physiological significance of Lewin's observation is questionable. After stress or ACTH secretion, adrenocorticosteroid secretion is associated with decreased adrenal cholesterol and ascorbate. From this finding, Lewin hypothesizes that vitamin C plays an important role in the synthesis of adrenal steroids....

Meaningful group structures are co-created within the long-term outpatient psychotherapy group through a hermeneutical interaction between structure and immediate experience of structure by individuals embedded in personal and collective contexts. Co-created meanings expand original group- and self-understandings and further evolve structures that are stable yet do not exist independently of th...

This article describes an approach to nursing home physician care that allows physicians to play a more integral role in the long-term care culture change movement. Through a simple refocusing of the traditional clinical assessment and plan, the physician's role is shaped and redefined, support staff more clearly see how the physician may contribute to the effort, and residents and families are...

Cells have been established in continuous culture from human and animal tissues, both normal and carcinomatous. From 197 specimens, 105 could be maintained in vitro for varying lengths of time, 27 for more than 6 months. In all cases the cells were found to be diploid. Cell lines with both epithelial and fibroblastic morphology have been isolated in medium 199 with added fetal calf serum, but a...