DPOAE in HIV infected adults

HIV infection is associated with impairment of hearing function, at any stage of disease causing complication to the external, middle, inner ear and CNS. Audiological manifestation of HIV is a direct consequence of virus or secondary to the pharmacological treatment or viral complication. \ud Objectives: There is paucity of information pertaining to hearing status in HIV. As the deafness can occur at any stage of HIV with varying degree and people with HIV live longer, there is need to address the hearing problems in these individuals. So this study aimed detecting the outer hair cell functioning by doing DPOAE in normal hearing HIV infected adults.\ud Method: The experimental group comprised of 12 HIV infected (24 ears) within 20 to 40 years. The age matched control group comprised of 15 subjects (30 ears). All the subjects had normal hearing sensitivity. Initially puretone audiometry and immittance was performed for the subject selection. Subsequently DPOAE procedure was done. \ud Results: The DPOAE was abnormal in 50% of the subjects.\ud Conclusion: It can be concluded that the cochlear involvement is a common observation in HIV infected individuals. DPOAE test can be used as a tool for early identification of cochlear pathology in HIV infected

Indo-Pak Strategic Interests and Radio Propaganda

This research paper touches upon the importance of Radio Broadcasting as a powerful medium in safeguarding national, cultural and strategic interests of the nations. While discussing worldwide the importance of radio broadcasts in times of peace and war, the paper specially refers to India-Pakistan media war on Jammu and Kashmir.  The paper lists certain instances when Radio Kashmir, a part of All India Radio, played a vital role in negating Pakistani media propaganda unleashed by her over and underground radio stations. It further suggests the need to strengthen media units owned by Governments across the globe for meeting their strategic interests in an era where low intensity wars are fought through media. Keywords: Radio Broadcasting, propaganda, India, Pakistan, America, Radio Kashmir

Ležaj sa stisnutim slojem ferofluida, uz anisotropnu permeabilnost, parametar klizne brzine materijala i tromost vrtnje

We present a theoretical study of the effect of anisotropic permeability and slip velocity on the action of the squeeze film formed when a secant-shaped circular upper plate with a porous facing approaches an impermeable and flat circular lower plate, considering also rotation of the plates. Expressions for the dimensionless pressure, load capacity and the response time are given by a differential equation. Computed values of dimensionless load capacity and response time are displayed in tabular form. It has been found that they decrease with increasing values of radial permeability, slip parameter and rotational inertia. However, they increase with increasing values of axial permeability and material constant of the Jenkins model. They have also been found to increase when the speed of the lower plate is higher than that of the upper plate.Opisujemo teoriju djelovanja anizotropne permeabilnosti i brzine klizanja na učinak stisnutog sloja koji nastaje kada se gornja ploča sekantnog oblika s poroznom površinom nasloni na nepropusnu i ravnu kružnu donju ploču. Bezdimenzijski tlak, nosivost i vrijeme odziva izražavamo diferencijalnom jednadžbom. Izračunate vrijednosti za nosivost i vrijeme odziva prikazujemo u tablicama. Nalazi se da one opadaju pri porastu radijalne permeabilnosti, parametra klizanja i momenta tromosti. Međutim, one se povećavaju pri porastu aksijalne permeabilnosti i konstante materijala prema Jenkinsovom modelu. Također nalazimo da rastu kada je brzina gornje veća od brzine donje ploče

Učinak brzine posmika u poroznom ležaju s klizačem u obliku sekante i s ferofluidnim mazivom

We analysed a bearing with a secant shaped slider and with the stator having a porous facing backed by a solid wall, using a magnetic fluid lubricant flowing as per Jenkins model. Computed values of the bearing characteristics are displayed in tabular form. The load capacity, friction on the slider and the coefficient of friction decreased with increasing values of the slip parameter. The load capacity decreased and friction as well as the coefficient of friction increased with increasing values of the material parameter. However, the position of the centre of pressure did not significantly alter owing to the changes in slip parameter. But it slowly shifted towards the inlet when the material parameter increased.Analiziramo ležaj s klizačem u obliku sekante u kojemu je stator porozan s čvrstom podlogom, a rabi magnetsko tekuće mazivo koje teče prema Jenkinsovom modelu. Izračunate vrijednosti značajki ležaja prikazuju se u tablicama. Nosivost, trenje klizača i koeficijent trenja smanjuju se pri povećanju parametra posmicanja, a nosivost i trenje smanjuju se pri povećanju parametra materijala. Položaj središta tlaka ne mijenja se bitno zbog promjena parametra posmicanja, ali se pomalo pomiče prema ulazu pri povećanju parametra materijala

Ležaj sa stisnutim slojem ferofluida, uz anisotropnu permeabilnost, parametar klizne brzine materijala i tromost vrtnje

We present a theoretical study of the effect of anisotropic permeability and slip velocity on the action of the squeeze film formed when a secant-shaped circular upper plate with a porous facing approaches an impermeable and flat circular lower plate, considering also rotation of the plates. Expressions for the dimensionless pressure, load capacity and the response time are given by a differential equation. Computed values of dimensionless load capacity and response time are displayed in tabular form. It has been found that they decrease with increasing values of radial permeability, slip parameter and rotational inertia. However, they increase with increasing values of axial permeability and material constant of the Jenkins model. They have also been found to increase when the speed of the lower plate is higher than that of the upper plate.Opisujemo teoriju djelovanja anizotropne permeabilnosti i brzine klizanja na učinak stisnutog sloja koji nastaje kada se gornja ploča sekantnog oblika s poroznom površinom nasloni na nepropusnu i ravnu kružnu donju ploču. Bezdimenzijski tlak, nosivost i vrijeme odziva izražavamo diferencijalnom jednadžbom. Izračunate vrijednosti za nosivost i vrijeme odziva prikazujemo u tablicama. Nalazi se da one opadaju pri porastu radijalne permeabilnosti, parametra klizanja i momenta tromosti. Međutim, one se povećavaju pri porastu aksijalne permeabilnosti i konstante materijala prema Jenkinsovom modelu. Također nalazimo da rastu kada je brzina gornje veća od brzine donje ploče

Učinak brzine posmika u poroznom ležaju s klizačem u obliku sekante i s ferofluidnim mazivom

We analysed a bearing with a secant shaped slider and with the stator having a porous facing backed by a solid wall, using a magnetic fluid lubricant flowing as per Jenkins model. Computed values of the bearing characteristics are displayed in tabular form. The load capacity, friction on the slider and the coefficient of friction decreased with increasing values of the slip parameter. The load capacity decreased and friction as well as the coefficient of friction increased with increasing values of the material parameter. However, the position of the centre of pressure did not significantly alter owing to the changes in slip parameter. But it slowly shifted towards the inlet when the material parameter increased.Analiziramo ležaj s klizačem u obliku sekante u kojemu je stator porozan s čvrstom podlogom, a rabi magnetsko tekuće mazivo koje teče prema Jenkinsovom modelu. Izračunate vrijednosti značajki ležaja prikazuju se u tablicama. Nosivost, trenje klizača i koeficijent trenja smanjuju se pri povećanju parametra posmicanja, a nosivost i trenje smanjuju se pri povećanju parametra materijala. Položaj središta tlaka ne mijenja se bitno zbog promjena parametra posmicanja, ali se pomalo pomiče prema ulazu pri povećanju parametra materijala