Energy-level quantization and single-photon control of phase slips in YBa2Cu3O7-x nanowires.

Significant progress has been made in superconducting quantum circuits. However new quantum devices that have longer decoherence times at higher temperatures are urgently required for quantum technologies. Superconducting nanowires with quantum phase slips are promising candidates for use in novel quantum devices. Here, we demonstrate YBa2Cu3O7-x nanowires with phase-slip dynamics and study their switching-current statistics at temperatures below 20 K. We apply theoretical models developed for Josephson junctions and show that our results provide strong evidence for energy-level quantization in the nanowires. The crossover temperature to the quantum regime of 12-13 K and the lifetime in the excited state exceeding 20 ms at 5.4 K are superior to those in conventional Josephson junctions. We also show how the absorption of a single photon changes the phase-slip and quantum state of a nanowire, which is important for the development of single-photon detectors with high operating temperature and superior temporal resolution.

Joint consultation for high-risk asthmatic children and their families, with pediatrician and child psychiatrist as co-therapists: model and evaluation.

Although a very common disease, childhood asthma can be a life-threatening condition. Psychosocial determinants have been acknowledged to trigger severe asthma. The authors review current knowledge about how psychosocial factors influence childhood asthma, with a special focus on compliance with treatment and family interaction. The authors describe their experience of joint treatment of high-risk asthmatic children and their families. The pediatrician and child psychiatrist work as co-therapists, and the results of this intervention are investigated. Forty-one high-risk asthmatics and their families were followed in the joint-consultation program. Two years after the onset of joint consultation, a significant improvement was found in symptom score, treatment score, and compliance score. The number of hospital admissions and of days spent in hospital decreased significantly. The cost of care was subsequently cut by two-thirds, despite the added cost of psychiatric care. The authors conclude that it is possible for doctors of the body and of the mind to share consultation work, with a positive impact on both the patient's health and the cost of treatment.

Compliance with treatment in asthma and Munchausen syndrome by proxy.

Among 1648 asthmatic patients, 17 families (1%) were identified as having Munchausen syndrome by proxy. Ten families did not treat their children's, attacks or refused medical care, and seven exaggerated the severity of symptoms to obtain invasive investigations and treatment. All the families had disturbed psychosocial backgrounds. The abuse consisted mainly of neglect, in that necessary treatment was not given. In some cases a more direct form of abuse was observed, when useless and sometimes harmful investigations and treatment were given. We conclude that medical control of the compliance of both parents and children is necessary in the management of childhood asthma.