Soliton equations solved by the boundary CFT

Soliton equations are derived which characterize the boundary CFT a la Callan et al. Soliton fields of classical soliton equations are shown to appear as a neutral bound state of a pair of soliton fields of BCFT. One soliton amplitude under the influence of the boundary is calculated explicitly and is shown that it is frozen at the Dirichlet limit.Comment: 13 page

Contrasts in Vital Rates: Madras and Punjab in the Colonial Period

It is well known that there have been persistent differences in demographic rates between northern and southern areas in post-independence India: in the north marital fertility is higher, infant mortality higher and life expectancy shorter than in the south. As Tim Dyson has shown for infant mortality, this probably has pre-independence origins. In this paper the post-WWII contrasts in demographic performances between north and south India will be traced back to the colonial period. By choosing Madras and Punjab, by selecting districts whose registration statistics are reasonably usable in each province (Madras: Coimbatore, Salem, North Arcot, South Arcot, and Tilnelvelli; Punjab: Gurdaspur, Jallundur, Amritsar, Hoshiarpur, Ferozepore, and Ambala, Karnal and Rohtak), and then by adopting W. Brass's relational Gompertz fertility model, logit life-table system and growth balance method, as exemplified by Dyson's seminal work on Berar, we estimate annual series of e0 and TFR for both provinces. The series clearly show that even in the colonial period both fertility and mortality were higher in the north than in the south, which will have wider implications in historical contexts.

Impaired secretion of growth hormone-releasing hormone, growth hormone and IGF-I in elderly men

The GHRH test and L-dopa test were performed in 12 normal young men (24.1 ± 1.1 years) and 12 normal elderly men (77.8±1.4 years) to investigate age-related changes in secretion of GHRH, GH and IGF-I. The basal plasma levels of GHRH and GH were not significantly different in young and elderly men, but the basal plasma level of IGF-I was higher in the young men (159.0± 11.7 vs 86.7± 11.6 μg/l). The area under the curve for plasma GH in the GHRH test was less in the elderly group (35.1 ±5.9 vs 11.2 ± 2.1 μg · h−1 · 1−1, p<0.001). The AUCs for the plasma GHRH and GH responses in the L-dopa test in young and elderly men were 32.0±2.7 vs 20.3±1.8 ng · h−1 · 1−1 (p<0.001), and 21.8±4.6 vs 5.4±1.1 μg · h−1 · 1−1 (p<0.01), respectively, indicating decreased releases of GHRH and GH in the elderly. Correlations between the AUCs for plasma GHRH and GH responses in L-dopa were found in both groups, but the ratio of the AUCs for GH/GHRH was lower in the elderly group. The elderly group showed a significant correlation between the basal plasma IGF-I level and the AUCs for plasma GH in the GHRH and L-dopa tests. These results suggest that elderly men have a decreased reserve of hypothalamic GHRH, resulting in secondarily impaired GH release, which may lead to a lower level of IGF-I than in young men

GH and GHRH responses to L-dopa in Cushing's disease

The function of the growth hormone-releasing hormone (GHRH)-growth hormone (GH) axis in Cushing's disease was studied by monitoring (a) the GH responses to GHRH loading and L-dopa loading, (b) the GHRH response to L-dopa loading, and (c) the daytime profiles of plasma GH concentration. GH release following GHRH and L-dopa was blunted in patients as compared to that in age-matched control subjects. However, GHRH release following L-dopa was similar in patients and controls. The plasma GH levels in four patients measured every 20 min by a highly sensitive immunoradiometric assay for GH showed pulsatile GH secretion at low levels during the observation period. These results indicate that GHRH release from the hypothalamus is preserved in patients with Cushing's disease, and support the hypothesis that glucocorticoid inhibits GH secretion by altering the hypothalamic somatostatin tone

線虫における緑膿菌に対する迅速な忌避行動の遺伝学的研究

筑波大学 (University of Tsukuba)201

線虫における緑膿菌に対する迅速な忌避行動の遺伝学的研究

筑波大学 (University of Tsukuba)201