Planting Trees on Kansas Prairies

Kansas always has been and always will be essentially a prairie state. But every year brings more convincing proof that her plains need not always remain treeless. Each planting season sees new effort put forth to beautify the Western Kansas homes and divest fhe plains of their traditional bleakness

Progress of Forestry Extension in Iowa

Interest and activity in forestry for Iowa is increasing definitely. A brief summary of last year\u27s forestry extension program appears something as follows

Localized patterns in planar gas-discharge systems

A summary is given of parts of the work that has been done on pattern formation in planar ac- and dc- gas-discharge systems with high ohmic and dielectric barrier respectively, at the Institute of Applied Physics of the University of Muenster. In addition, a qualitative reactiondiffusion model is reviewed that takes account of many of the effects that have been observed experimentally

Causes of stillbirth in a community survey in Gombe State

Background: Perinatal mortality rate is very high in North Eastern Nigeria mainly due to a large number of still births. The causes and factors related need to be identified so as to proffer solutions with a view to improving obstetric practice and perinatal survival.Objectives: To identify the causes and factors related to stillbirths in Dukku Local Government Area of Gombe state.Methodology: A prospective study that was both hospital and community based, in which parturients were recruited in their last trimester and followed up till delivery. The fetal outcome was recorded and still birth rate calculated.Results: Five hundred and two parturient mothers were recruited. They delivered a total of 520 babies, amongst whom were eighteen sets of twins; five hundred of these were live births. There were 20 still births, giving a stillbirth rate of 38.5/1000. Causes of stillbirth include unbooked and early pregnanacies as well as deliveries unattended to by trained health personnel.Conclusion: Lack of antenatal Care, home delivery and teenage pregnancy were important factors contributing to high still birth rate in Dukku LGA of Gombe State.Key Words: Stillbirth, Perinatal, Mortality

Ecology of Fucus vesiculosus (Phaeophyceae) at its southern limit of distribution: Growth and production of the early stages of development.

Growth and survival of two populations of Fucus vesiculosus were studied at its southern limit of distribution on the eastern Atlantic coast. Experimentally denuded areas at an estuarine and a semi-exposed site in an upwelling area (NW Spain) were followed for 17 months. Three different cohorts were detected during the sampling period. Differences among the three cohorts in terms of growth, reproduction and survival were detected. These differences may be due to the different time of appearance of the different cohorts or the presence of the previously established individuals when the second and third cohorts were recruited. Although the growth of the cohorts recruiting in autumn was higher than for the cohorts recruiting in spring and summer, the individual growth was represented in all cases by a logistic function, as the fastest rates of increase in length occurred during the first 6 months of life, and maximum length was attained after the thallus reached 1 year in age. In the same way, production was maximum for the first cohort, recruiting in autumn, even when it had the lowest survival rate, because of the rapid growth of survivors during spring and summer. For both populations, reproduction was continuous through the year but it was maximal during spring and summer. Protection from waves might have been thought to favour higher production and standing stock biomass values at the estuarine site compared with the semi-exposed site, while turnover rates of biomass were higher at the latter. Contrary to expectations, most of the nutrients available for the studied populations were not related to upwelling. Despite the fast initial growth of new recruits, both populations appeared to be very sensitive to denudation.Projects ANILE (CTM2009-08396, CTM2010-09904-E) Plan Nacional I+D+i and RADIALES (IEO)En prensa1,828

Topology with Dynamical Overlap Fermions

We perform dynamical QCD simulations with $n_f=2$ overlap fermions by hybrid Monte-Carlo method on $6^4$ to $8^3\times 16$ lattices. We study the problem of topological sector changing. A new method is proposed which works without topological sector changes. We use this new method to determine the topological susceptibility at various quark masses.Comment: 15 pages, 3 figure