This work presents the study of multiphase relations of classical Cepheids in the Magellanic Clouds for short periods (log P < 1) and long periods (log P > 1). From the analysis, it has been found that the multiphase relations obtained using the models as well as observations are highly dynamic with pulsational phase. The multiphase relations for short and long periods are found to display contrasting behaviour for both LMC and SMC. It has been observed that the multiphase relations obtained using the models agree better with the observations in the PC plane in most phases in comparison to the PL plane. Multiphase relations obtained using the models display a clear distinction among different convection sets in most phases. Comparison of models and observations in the multiphase plane is one way to test the models with the observations and to constrain the theory of stellar pulsation.

The purpose of this study was to quantify hysteresis during adsorption and desorption of atrazine as a function of incubation time for a Sharkey clay soil. Adsorption was carried out using one day batch equilibration and was followed by incubation periods ranging from 1 to 24 d. Incubation was subsequently followed by six consecutive desorption steps where each step represented 1 d. The Freundlich equation (S = K CN where S is the amount of atrazine retained, μg g-1; C is concentration, μg ml-1; K is the distribution coefficient, cm3g-1; and N is a dimensionless parameter) was used to describe batch results. Both adsorption and desorption isotherms were well described by the Freundlich model. Fitted K parameter values for desorption isotherms were consistently higher than those associated with adsorption. The opposite trend was observed for the exponential parameter N. The results revealed that desorption deviated significantly from adsorption data. The deviation, which is commonly referred to as hysteresis, was more pronounced as incubation time increased. Batch equilibration results also indicated that the extent of hysteresis was not influenced by soil sterilization. Attempts to quantify the extent of hysteresis using a simplified approach are presented. We found that, for a given batch data set, hysteresis can be quantified provided that Freundlich N from adsorption and desorption isotherms is known.

In the Islamic Republic of Pakistan the law relating to people who are mentally ill, until 2001, was set out by the Lunacy Act of 1912, which was inherited from the British colonial occupiers. In 2001 the Mental Health Ordinance 2001 took its place but only for this federal law to be superseded in April 2010 with the 18th constitutional amendment. As part of that amendment, provinces have become responsible for (psychiatric) healthcare, including mental health legislation. Forensic psychiatry is practised in Pakistan but is very much in its infancy; it needs to develop and learn from more experienced countries in Europe and North America. Cultural factors and misconceptions arising from religion can at times contribute to, or create, barriers to the implementation of forensic psychiatric services in Pakistan. This paper reviews the current state of forensic psychiatric services in Pakistan and is intended to open the debate on the challenges ahead.

Scintillation properties are often studied by photo-luminescence (PL) andscintillation measurements. In this work, we combine X-ray-induced luminescence(XRIL) spectroscopy [Review of Scientific Instruments 83, 103112 (2012)] with PLand standard scintillation measurements to give insight into the scintillationproperties of un-doped ZnO single crystals. XRIL revealed that ZnO luminescenceproportionally increases with X-ray power and exhibits excellent linearity -indicating the possibility of developing radiation detectors with good energyresolution. By coupling ZnO crystals to fast photomultiplier tubes andmonitoring the anode signal, rise times as fast as 0.9 ns were measured.

The hydrodynamic equations of positive and negative ions, degenerate electrons, and the Poisson equation are used along with the reductive perturbation method to derive the three-dimensional Zakharov–Kuznetsov (ZK) equation. The G′/G-expansion method is used to obtain a new class of solutions for the ZK equation. At certain condition, these solutions can describe the solitary waves that propagate in our plasma. The effects of negative ion concentrations, the positive/negative ion cyclotron frequency, as well as positive-to-negative ion mass ratio on solitary pulses are examined. Finally, the present study might be helpful to understand the propagation of nonlinear ion-acoustic solitary waves in a dense plasma, such as in astrophysical objects.

As part of their functions, the Hot Laboratories Center, EAEA, are responsible for conditioning of different spent sealed sources which received from different end users. Regarding to the inventory of spent sealed sources in Egypt, thirty eight 60Co spent sealed sources with low radioactivity levels are needed to be conditioned according to IAEA guidelines. The method of conditioning of 60Co spent sealed sources can be achieved using 200 l drum with special lead shield and concrete as matrix material. The surface dose rate calculation reveals that when lead shield of 6.5 cm thickness (density 11.35 gm/ml), concrete shield at least 18 cm thickness (density 2.35 gm/cm3) and 200 l drum thickness is 0.14 cm, (density 7.86 gm/cm3), the surface dose rate is 0.86 mSv/ h. The data are complied with the regulation of IAEA safety standard (surface dose rate doses not exceed than 2.0 mSv/ h).

Temporal lobe and limbic structures may be abnormal in bipolar disorder. T2-weighted magnetic resonance imaging (MRI) scans frequently show deep white matter lesions. MRI was performed on 50 young (19–39 years) euthymic patients with bipolar disorder and 26 controls. Mean temporal lobe volumes were reduced in patients (right, 9.42 cm3; left, 6.33 cm3) but this could not be ascribed to a specific structure. Deep white matter lesions were present in 5 patients but no controls raising questions of their aetiological significance.

Near-field scanning optical microscopy has been used to measure the internal spatial modes and local properties controlling optical wave propagation in glass/silica buried waveguides. The period of the observed standing modes provides a direct measure of the effective index, which combined with the measured transverse modal shape and decay constants, determines the values of all spatial components of the wave vector.

Typically, small fluctuations in the material properties of structures can prevent proper operation as well as accurate diagnostic device modeling. The NSOM local probe measurements provide a means of detailed characterization, and defects in processing and their affects on performance are readily identified. We have also developed a technique that can obtain information about the locations of remote dielectric interfaces based upon the rate of change in the phase of the standing wave as a function of wavelength. Finally, experimental results addressing the issue of perturbation of the NSOM probe on the measurement of the local field shows a weak but measurable perturbation, and the dependence on aperture and material parameters will be discussed.