RF and IF mixer optimum matching impedances extracted by large-signal vectorial measurements

This paper introduces a new technique that allows us to measure the admittance conversion matrix of a two-port device,using a Nonlinear Vector Network Analyzer.This method is applied to extract the conversion matrix of a 0.2 µµµµm pHEMT,driven by a 4.8 GHz pump signal,at different power levels,using an intermediate frequency of 600 MHz.The issue on data inconsistency due to phase randomization among different measurements is discussed and a proper pre- processing algorithm is proposed to fix the problem. The output of this work consists of a comprehensive experimental evaluation of up-and down-conversion maximum gain,stability,and optimal RF and IF impedances

CLINICAL STUDY ON EFFECT OF DIFFERENT METHODS OF SHIRODHARA IN PATIENTS OF INSOMNIA

Background: Insomnia has a great impact on social, occupational and other functioning areas of the individual. The modern medical science is still not having a definitive and effective treatment for this disease. Shirodhara is considered as the highly effective treatment for this condition. Most practitioners practising oscillatory method of Shirodhara, Some advises to do single point Shirodhara. Interestingly there is no research has been done on this topic to find out which method is best and standard. Aims: To compare the efficacy of single point drip method Jaladhara and Oscillatory drip method Jaladhara in Nidranasha. Methods and Materials: Study was conducted in 30 diagnosed patient of Nidranasha with the help of symptoms of nidranasha and Athens insomnia scale. The patients were randomly divided into 2 groups. i.e., Group A and Group B to compare the effect of Single point drip method and oscillatory drip method in Insomnia. Results: Group B (Oscillatory drip method Shirodhara) compared to Group A (Single point drip method Shirodhara) provided better relief clinically in subjective parameters Total sleep duration (48.3%), overall quality of sleep (48.3%) and Statistically provided moderately significant improvement in Functioning (physical and mental) and highly significant improvement in systolic blood pressure. Conclusion: Oscillatory drip method Shirodhara compared to Single point drip method Shirodhara provided better relief clinically and statistically

Negative specific heat in a thermodynamic model of multifragmentation

We consider a soluble model of multifragmentation which is similar in spirit to many models which have been used to fit intermediate energy heavy ion collision data. In this model $c_v$ is always positive but for finite nuclei $c_p$ can be negative for some temperatures and pressures. Furthermore, negative values of $c_p$ can be obtained in canonical treatment. One does not need to use the microcanonical ensemble. Negative values for $c_p$ can persist for systems as large as 200 paticles but this depends upon parameters used in the model calculation. As expected, negative specific heats are absent in the thermodynamic limit.Comment: Revtex, 13 pages including 6 figure

Cognitive Dysfunction in Diabetes Mellitus

People with diabetes mellitus type 2 will have higher rate of cognitive impairment than people that do not. Besides that, the effect of diabetes on the normal mental functions is often disregarded. This may be due to a lack of signs and standard assessment technique to measure the cognitive function of the diabetes patient. Hyperglycaemia which is common in people with diabetes has been associated with an increase in the possibility of developing Alzheimer’s disease and vascular dementia in the both general public and people with cognitive impairment. It has been estimated that an individual with diabetes mellitus is 1.5 times more likely to experience cognitive dysfunction and dementia than a normal healthy individual. Alleviation of microvascular complications and hypoglycaemia is the key in treatment of DM to prevent cognitive decline

Effect of UV/ozone treatment time on pentacene thin-film transistors

Organic materials due to their low process temperature and compatibility with flexible plastic substrates are becoming the cost efficient substitutes to inorganic materials. Their ability to be applied over large areas makes them attractive for large‐area electronics. Their applications range from flexible displays to solar cells, sensors and RFID tags

Model of multifragmentation, Equation of State and phase transition

We consider a soluble model of multifragmentation which is similar in spirit to many models which have been used to fit intermediate energy heavy ion collision data. We draw a p-V diagram for the model and compare with a p-V diagram obtained from a mean-field theory. We investigate the question of chemical instability in the multifragmentation model. Phase transitions in the model are discussed.Comment: Revtex, 9 pages including 6 figures: some change in the text and Fig.

Statistical Models of Nuclear Fragmentation

A method is presented that allows exact calculations of fragment multiplicity distributions for a canonical ensemble of non-interacting clusters. Fragmentation properties are shown to depend on only a few parameters. Fragments are shown to be copiously produced above the transition temperature. At this transition temperature, the calculated multiplicity distributions broaden and become strongly super-Poissonian. This behavior is compared to predictions from a percolation model. A corresponding microcanonical formalism is also presented.Comment: 12 pages, 5 figure

The Quark-Gluon Plasma in a Finite Volume

The statistical mechanics of quarks and gluons are investigated within the context of the canonical ensemble. Recursive techniques are developed which enforce the exact conservation of baryon number, total isospin, electric charge, strangeness, and color. Bose and Fermi-Dirac statistics are also accounted for to all orders. The energy, entropy and particle number densities are shown to be significantly reduced for volumes less than 5 cubic fm.Comment: 8 pages, 3 figure