Evaluation of diffuse lung diseases by high resolution computed tomography of chest

Background: Diffuse lung diseases describe a heterogeneous group of disorders of the lower respiratory tract characterized by inflammation and derangement of the interstitium and loss of functional alveolar units. The disease is not restricted to the interstitium only, as it involves epithelial, endothelial and mesenchymal cells with the disease process extending into the alveoli, acini and bronchioles. Thus, the entire pulmonary parenchyma is involved. The objective of the study was to evaluate diffuse lung diseases by high resolution computed tomography of chest.Methods: A cross-sectional observational study was done in 30 patients. Adult patients of either sex of age group 18 and above showing reticular opacities on chest X-ray and those patients who were incidentally diagnosed as cases of diffuse lung diseases on HRCT chest were included in present study.Results: Reticular opacities were the most common roentgenographic finding followed by reticulonodular opacities. On HRCT, intra and interlobular septal thickening was the most common finding in Idiopathic interstitial pneumonia (usual interstitial pneumonia).Conclusions: High resolution computed tomography (HRCT) is superior to the plain chest X-ray for early detection and confirmation of suspected diffuse lung diseases. In addition, HRCT allows better assessment of the extent and distribution of disease, and it is especially useful in the investigation of patients with a normal chest radiograph. Coexisting disease is often best recognized on HRCT scanning

Fabrication and Characterization of Mg- and Hg-doped CdS Nanostructured Thin Films Deposited by Chemical Bath Deposition

In this paper we report the preparation of Hg- and Mg-doped nanostructured CdS thin films deposited on commercial glass slide substrate by chemical bath deposition technique at room temperature. The asdeposited doped CdS nanostructured thin films were characterized using X-ray diffractometer, SEM and UV-VIS spectrophotometer. The SEM micrographs confirmed the formation of doped CdS thin film with nano-structured morphologies. The EDX studies confirm chemical composition of Hg- and Mg-doped nanostructured CdS thin films.The XRD studies confirmed the crystalline nature of thin films and nanostructured behavior. The optical studies reveal the optical energy bandgap of 3.82eV(12hrs) & 3.74eV(24hrs) and 3.59 (12hrs) & 3.22eV (24hrs) for Mg-doped CdS and Hg-doped CdS nanostructured thin films respectively. Blue shift was observed in both the doped CdS nanostructured thin films

Fabrication and Characterization of Mg- and Hg-doped CdS Nanostructured Thin Films Deposited by Chemical Bath Deposition

In this paper we report the preparation of Hg- and Mg-doped nanostructured CdS thin films deposited on commercial glass slide substrate by chemical bath deposition technique at room temperature. The asdeposited doped CdS nanostructured thin films were characterized using X-ray diffractometer, SEM and UV-VIS spectrophotometer. The SEM micrographs confirmed the formation of doped CdS thin film with nano-structured morphologies. The EDX studies confirm chemical composition of Hg- and Mg-doped nanostructured CdS thin films.The XRD studies confirmed the crystalline nature of thin films and nanostructured behavior. The optical studies reveal the optical energy bandgap of 3.82eV(12hrs) & 3.74eV(24hrs) and 3.59 (12hrs) & 3.22eV (24hrs) for Mg-doped CdS and Hg-doped CdS nanostructured thin films respectively. Blue shift was observed in both the doped CdS nanostructured thin films

Improvement of Impaired Memory in Mice by Taurine

Taurine was extracted from Pegasus later-narius Cuvier to study its effects on learning and memory in mice. Mice were treated with different doses of taurine (10 mg/kg, 20 mg/kg, 40 mg/kg). The mice were treated with various chemical agents (pentobarbital, cycloheximide, sodium nitrite, alcohol) to disrupt the normal memory process. We measured the effect of taurine on step-down latency (SDL) and escape latency (EL) in a passive avoidance task after 10 or 30 days. Treatment with taurine alone did not change either SDL or EL. Taurine protected mice .from the memory disruption induced by alcohol, pentobarbital, sodium nitrite, and cycloheximide but had no obvious effect on motor coordination, exploratory activity, or locomotor activity as measured using the rota-rod test and the hole board test. We conclude that taurine can be effective in attenuating the amnesia produced by alcohol, pentobarbital, cycloheximide, and sodium nitrite without compromising the behavioral aspects of the animals tested

The suppression of magnetism and the development of superconductivity within the collapsed tetragonal phase of Ca0.67Sr0.33Fe2As2 at high pressure

Structural and electronic characterization of (Ca0.67Sr0.33)Fe2As2 has been performed as a func- tion of pressure up to 12 GPa using conventional and designer diamond anvil cells. The compound (Ca0.67Sr0.33)Fe2As2 behaves intermediate between its end members-CaFe2As2 and SrFe2As2- displaying a suppression of magnetism and the onset of superconductivity. Like other members of the AEFe2As2 family, (Ca0.67Sr0.33)Fe2As2 undergoes a pressure-induced isostructural volume collapse, which we associate with the development of As-As bonding across the mirror plane of the structure. This collapsed tetragonal phase abruptly cuts off the magnetic state, giving rise to superconductivity with a maximum Tc=22.2 K. The maximum Tc of the superconducting phase is not strongly correlated with any structural parameter, but its proximity to the abrupt suppression of magnetism as well as the volume collapse transition suggests that magnetic interactions and structural inhomogeneity may play a role in its development. The pressure-dependent evolution of the ordered states and crystal structures in (Ca,Sr)Fe2As2 provides an avenue to understand the generic behavior of the other members of the AEFe2As2 family.Comment: 9 pages, 9 figure