Energy level separations in high-lying Rydberg states of neutral aluminium have been measured by a two-photon millimetre-wave resonance method to obtain n 2F–(n + 1) 2F intervals for n = 29–37 with an accuracy ±1 MHz. An Al atomic beam was excited stepwise by pulsed lasers, and the Rydberg atoms were detected by state-selective field ionization. From these data and previous optical data for the...

Introduction Are you involved in land use planning? Do you review applications for development? In Colorado, as in many other states, local pub­ lic health agencies (LPHAs) do provide these services. When local planning departments want to know the public health impacts of a proposed project, they generally refer the de­ velopment application to the LPHA’s environ­ mental health (EH) division. ...

alopecia areata is a dermatologic disorder which presents itself with sudden and patchy hair loss. the aim of this study is to assess the issues related to the similar condition in ancient manuscripts of traditional persian medicine. this is a descriptive review study in which a number of well-known traditional persian manuscripts such as; kamil al-sina’a al-tibbiyyaby al-majusi, ‘ali ibn al-’a...

An analytic study was conducted on coupled partial differential equations. We formally derived new solitary wave solutions of generalized coupled system of Zakharov-Kuznetsov (ZK) and KdV equations by using modified extended tanh method. The traveling wave solutions for each generalized coupled system of ZK and KdV equations are shown in form of periodic, dark, and bright solitary wave solution...

Graz University of Technology, Institute of Environmental Biotechnology, Petersgasse 12, A6 8010 Graz, Austria; Julius Kühn-Institut (JKI), Messeweg 11, D-38104 Braunschweig, 7 Germany, Kawanda Agricultural Research Institute, National Banana Research Program, 8 Uganda; Makerere University, Department of Agricultural Production, College of 9 Agricultural and Environmental Sciences, Uganda and B...

In this study, torsional wave propagation is investigated in a rod that are made of one and two dimensional functionally graded material. Firstly, the governing equations of the wave propagation in the functionally graded cylinder derived in polar coordinate. Secondly, finite difference method is used to discretize the equations. The Von Neumann stability approach is used to obtain the time ste...

The author contends that sex differentials in childhood mortality in Pakistan are a likely outcome of son preference behavior by parents. Consideration is given to the historical improvement in the female disadvantage in mortality, the neglect of female children, gender and class factors, and son preference and high fertility. Data are from the 1981 Pakistan census and other official surveys....