Qualification Methodologies for ICs and MMICs for Aerospace Industry

The ICsIMMICs attained importance in the field of microelectronics as these play a majorrole in the aerospace industry. The reliability of the ICsIMMICs becomes the critical issue becauseof complex material properties. A methodology has to be adopted which encompasses thequalification of ICsJMMICs for their use in the areas of strategic importance. A three-stepprocedure, which includes the process qualification, product qualification, and product acceptanceis followed. The process qualification outlines a procedure that the foundry should follow toassure the quality, uniformity, and reproducibility from a specific process. Product qualificationinvolves a set of simulations and measurements to establish the electrical, thermal, and reliabilitycharacteristics of a particular circuit design. Lastly, product acceptance is a series of testsperformed on the deliverable

Synthesis and Characterisation of Some New Aluminium Derivatives of Schiff Bases Containing N, O and S Donor Atoms and the Anti Fertility Activity of the Derivative Al[SC6H4N:C(CH3)CH2COCH3]3

Some new compounds of aluminium having the general formula AI[SC6H4N:C(R) CH2 C(O)R’]3 where R = CH3, R' = CH3 (1); R' = CH3, R' = C6H5 (2); R = CF3, R’ = -C = CH - CH = CHS (3); R = CF3, R’ = C6H5 (4) have been synthesised by the reactions of Al(OPri)3 and the corresponding ligands in 1:3 molar ratios in benzene. Elemental and spectroscopic (IR, 1H, 13C, and 27AI NMR) characterisation of these monomeric compounds reveals monofunctional bidentate behaviour of ligand moiety and the octahedral geometry around aluminium atom. Compound (1), AI[SC6H4N:C(CH3)CH2COCH3], has been tested for its antifertility activity in male albino rats. The oral administration of this compound at the dose level 6.5 rag/rat/day reduced the weights of testes and epididymides. Significant decrease in sperm motility as well as sperm density resulted in the reduction of male fertility by 100%. Production of primary spermatocytes (preleptotene and pachytene), secondary spermatocytes and step-19 spermatids declined by 56.10%, 44.42 %, 63.35 % and 64.57 % respectively. These results indicate that the administration of compound (1) in male rats brought about an interference with spermatogenesis which ultimately caused infertility

Periodic evaluation of drug utilization in intensive coronary care unit patients in a tertiary care hospital

Background: A wide and gradual variation exists periodically in the patterns of pharmacotherapy among patients admitted with CVDs in CCU. Periodic evaluation of drug utilization in the CCU is necessary for optimization of health care system, proper use of resources and making prescription policy.Methods: It was retrospective and prospective study. Study was carried out at Tertiary care hospital in Mangalore. Retrospective study period was from 1/07/2010 till 31/12/2010 and Prospective study duration was from 1/01/2016 till 30/06/2016. Patients from CCU were participants of this study.Results: Data of total 278 patients were taken, out of which 138 patients from 2010 and 140 patients in 2016 were analyzed respectively and were compared among drug therapy for IHD - Nitrates, dual antiplatelet therapy (aspirin and clopidogrel), dyslipidemic drugs and beta blockers remain drug of choice in both retrospective and prospective study. But, anticoagulant (heparin/ LMWH) use increased in prospective studies. In Heart failure - nitrates, antiplatelet, dyslipidemic drugs followed by inotropes and diuretics was used in both study. Cardiomyopathy was managed with diuretics, ACEIs, and nitrates in both retrospective and prospective study.Conclusions: In conclusion, predominance of male gender and poly-pharmacy were observed. However, it has identified areas to further rationalize and optimize patterns of polypharmacy and evidence based use of medications like beta blockers, anticoagulants/antiplatelet agents and antiarrythmisc. The results on the major determinants of cardiovascular drug use in CCU matched with the existing indications and cautions for use with each drug class

Prevalence and incrimination of Anopheles fluviatilis species S (Diptera: Culicidae) in a malaria endemic forest area of Chhattisgarh state, central India

BACKGROUND: Chhattisgarh state in central India is highly endemic for malaria and contributes about 13% of annually reported malaria cases in the country with predominance of P. falciparum. Entomological investigations were carried out in a tribal forested area of district Bastar located in the southern part of Chhattisgarh state to record the prevalence of sibling species of Anopheles fluviatilis and An. culicifacies complexes. The vector species complexes were investigated at sibling species level for their biology in terms of resting and feeding behavior and malaria transmission potential. METHODS: Indoor resting vector mosquitoes collected during 2010–2011 were identified to sibling species by cytotaxonomy and polymerase chain reaction (PCR) assay. The blood meal source analysis and incrimination studies were done at sibling species level by counter current immunoelectrophoresis and enzyme linked immunosorbent assay (ELISA) respectively. RESULTS: Analysis of sibling species composition revealed predominance of An. fluviatilis species S in the study area, which was found to be highly anthropophagic and rested in human dwellings whereas the sympatric species T was primarily zoophagic. Incrimination studies showed high sporozoite rate in species S, thereby confirming its vectorial efficiency. An. culicifacies was encountered in low numbers and comprised species B and C in almost equal proportion. Both these species were found to be exclusively zoophagic. CONCLUSION: The observations made strongly suggest that species S of Fluviatilis Complex is the principal vector of malaria in certain forest areas of district Bastar, Chhattisgarh state and should be the target species for vector control operation. Vector control strategies based on biological characteristics of Fluviatilis S will lead to substantial decline in malaria incidence in such areas

Expression and activity of N-myristoyltransferase in lung inflammation of cattle and its role in neutrophil apoptosis

N-myristoyltransferase (NMT) attaches a 14 carbon fatty acid, myristic acid, to the N-terminal glycine residue of proteins. NMT exists in two isoforms NMT1 and NMT2. Myristoylated proteins play critical roles in protein–protein interactions, cell signaling and oncogenesis. Although elevated expression of NMT1 has been described in colorectal carcinoma, its expression and roles in normal and inflamed lungs of the cattle are unknown. Therefore, we investigated the expression and activity of NMT in a bovine model of lung inflammation induced with Mannheimia hemolytica and in vitro in neutrophils and macrophages. Western blots revealed increased expression of NMT1 in lungs from infected animals compared to control animals. Total NMT activity was reduced in inflamed lungs compared to control animals (p < 0.05) along with increased expression of enolase, a putative inhibitor of NMT. NMT1 staining was observed in the septum, vascular endothelium and the epithelium in the lungs from control as well as infected calves. NMT1 expression was intense in neutrophils in the necrotic areas in the inflamed lungs. Immuno-electron microscopy localized NMT1 in cytoplasm and nuclei of endothelium, pulmonary intravascular macrophages and airway epithelium. Total NMT activity and NMT1 expression were increased in neutrophils and macrophages exposed to Escherichia coli LPS in vitro. NMT knockdown increased apoptosis in activated neutrophils. This is the first report demonstrating expression of NMT in normal and inflamed lungs and a novel role for NMT in regulation of neutrophil lifespan

NC2213: a novel methionine aminopeptidase 2 inhibitor in human colon cancer HT29 cells

Methionine aminopeptidase 2 (MetAP2) is a bifunctional protein that plays a critical role in the regulation of post-translational processing and protein synthesis. MetAP2 is overexpressed in human colon cancer. In this report we screened various MetAP2 inhibitors and treated HT29 cells with various concentrations of compounds. We evaluated the expression of MetAP2 and pp60c-src expressions in HT29 cells. In addition we also carried out the cell proliferation and cell cycle analysis in the MetAP2 inhibitor-treated HT29 cells. The cell cycle analysis of HT29 treated with 1.0 μM of NC2213 showed an arrest in the G2 phase followed by an induction in the percentage of cells undergoing apoptosis in the sub-G1 phase. Western blot analysis revealed that the MetAP2 expression was dose-dependently decreased when the HT29 cells were treated with the 3,5-bis(benzylidene)-4-piperidone derivative (NC2213). In addition, phosphorylation of Src, a myristoylated oncoprotein was significantly decreased by 1.0 μM of NC2213 as revealed by Western blot analysis. Furthermore, NC2213 also inhibits the expression of pp60c-src in HT29 cells. Interestingly, this compound also inhibits the phosphorylation at Tyr416 of pp60c-src while increasing the phosphorylation at Tyr527 of pp60c-src. NC2213 inhibits the growth of HT29 cells by inducing apoptosis and might be useful for the treatment of human colon cancer

Comparative studies of neodymium (III)-selective PVC membrane sensors

Sensors based on two neutral ionophores, N,N�-bis((1H-pyrrol-2-yl)methylene)cyclohexane-1,2-diamine (L1) and 3,3�-(cyclohexane-1,2-diylbis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis(5-hydroxymethyl)pyridine-2-ol) (L2) are described for quantification of neodymium (III). Effect of various plasticizers; 2-nitrophenyloctylether (o-NPOE), dibutyl butylphosphonate (DBBP), tri-n-butyl phosphates (TBP), dioctylpthalate (DOP) and chloronapthalen (CN) and anion excluder, sodiumtetraphenylborate (NaTPB) has been studied. The membrane composition of PVC:o-NPOE:ionophore (L1):NaTPB (w/w;mg) of 150:300:5:5 exhibited best performance. The sensor with ionophore (L1) exhibits significantly enhanced selectivity towards neodymium (III) in the concentration range 5.0×10−7 to 1.0×10−2M with a detection limit of 1.0×10−7M and a Nernstian compliance (19.8±0.3mVdecade−1 of activity) within pH range 4.0–8.0. The response time of sensorwas found as 10 s. The influence of the membrane composition and possible interfering ions has also been investigated on the response properties of the electrode. The fast and stable response, good reproducibility and long-term stability of the sensor are observed. The sensor has been found to work satisfactorily in partially non-aqueous media up to 20% (v/v) content of methanol, ethanol or acetonitrile and could be used for a period of 3 months. The selectivity coeffi-cients determined by using fixed interference method (FIM) indicate high selectivity for neodymium. The proposed electrode shows fairly good discrimination of neodymium (III) from other cations. The application of prepared sensor has been demonstrated in the determination of neodymium (III) in spiked water samples