New minister, old problems

New Challenges and Old Problems

New Insights to Old Problems

From the history of the θ-τ puzzle and the discovery of parity non-conservation in 1956, we review the current status of discrete symmetry violations in the weak interaction. Possible origin of these symmetry violations are discussed. PACS: 11.30.Er, 12.15.Ff, 14.60.Pq

Commentary Tuberculosis: Old problems and new approaches

In New York City from 1985 to 1992, reported cases of tuberculosis rose by more than 20%. This followed a 30-year period of decline in the incidence of the disease. The reasons for the reversal are many and include the role of HIV-1 infection in enhancing disease progression and transmission, homelessness in the city, the emergence of multi-drug-resistant strains of the etiological agent (Mycob...

Thyroid Emergencies: New Insight into Old Problems.

Thyroid emergencies are major life-threatening endocrine conditions associated with life-threatening disorders resulting from either severe deficiency or excess of thyroid hormones. Deficiency of thyroid hormones may present as myxedema coma whereas excessive hormone production can present as life threatening thyrotoxic storm. The diagnosis of both requires a high index of clinical suspicion. T...

Mechanical circulatory support: new data, old problems.

Mechanical devices to support the circulation in the presence of a “failing” heart were originally conceived as alternatives to biological replacement of the heart. Such alternatives are needed because of the problems inherent in allotransplantation. These have included the grossly inadequate supply of donor hearts, as well as the need for chronic immunosuppression and the myriad of complicatio...