An investigation of temperature distribution in cooled guide vanes

A numerical study to determine the temperature distribution in the guide vane blades of a radial inflow turbine is presented. A computer program was developed which permits the temperature distribution to be calculated when the blade is cooled internally using a combination of impingement and film cooling techniques. The study is based on the use of the finite difference method in a two dimensional heat conduction problem. The results are then compared to determine the best cooling configuration for a certain coolant to primary mass flow ratio

Assessment of depression in diabetic patients

Background: Diabetes is one of the most common chronic conditions in the world. The worldwide prevalence of diabetes mellitus (DM) has risen dramatically over the past two decades because of increasing obesity and reduced activity levels. The purpose of this study was to show the association between depression and diabetes. Methods: It was a cross-study. The study included 240 patients who were chosen randomly with no gender bias. A convenient subject of 240 diabetic patients was interviewed. Results: Out of the total 240 diabetic patients, included in this study, the majority of patients, 52.63% in the age group of 60 years had depression with a Hamilton score of >19 while 47.37% of patients in the age of 40 to 50 years had Hamilton score of >19. 84.21% of males had depression with a Hamilton score >19 as compared to females who had a Hamilton score of 15.79%. The patients within the age group of 40-59 have 2.5 times more risk of having depression as compared to the age group of 20 to 39 and patients in the age group >60 years have 4.23 times higher risk of depression as compared to patients in the age group of 20 to 39 years. The association between gender and depression shows that males have a higher rate of depression (78.17%) as compared to females (21.81%) with an odd's ratio of 3.0. Conclusions: Our study showed a high prevalence of depression and anxiety in male patients and the elderly age group. Planning and implementation of screening for mental health issues in the elderly population diagnosed with a lifestyle disease-such as type 2 diabetes mellitus-with existing comorbidities should be recognized as one of the most important goals of the public health system. It seems necessary to involve medical teams in the screening process to verify the symptoms, promptly establish the diagnosis, and initiate the appropriate depression treatment. In diabetic patients, depression remains underdiagnosed and an important aspect of the diabetic specialists would be the awareness of this quite common co-morbidity

Accident Detection and Notification System Using Android

Now a day it is seen that there are number of vehicle and accident causing due to it is increasing day by day. Many people get injured and some of them even die due to unavailability of emergency facilities. The emergency responders take much long time to reach the spot which some time fail to save the lives. So to reduce this scenario there is need to decrease the time between the accidents occurred and the emergency facility provided to them. With the help of android phone which will detect the accident through collision detection circuit and notification will be sent to the known people using GSM which can be already noted and alert to hospital system and police station with alert message along with the link of map using GPS which will address the exact place of accident. DOI: 10.17762/ijritcc2321-8169.15034

Search for TeV γ\gamma -rays from H1426+428 during 2004-07 with the TACTIC telescope

The BL Lac object H1426+428 ($z\equiv 0.129$) is an established source of TeV $\gamma$-rays and detections of these photons from this object also have important implications for estimating the Extragalactic Background Light (EBL) in addition to the understanding of the particle acceleration and $\gamma$-ray production mechanisms in the AGN jets. We have observed this source for about 244h in 2004, 2006 and 2007 with the TACTIC $\gamma$-ray telescope located at Mt. Abu, India. Detailed analysis of these data do not indicate the presence of any statistically significant TeV $\gamma$-ray signal from the source direction. Accordingly, we have placed an upper limit of $\leq1.18\times10^{-12}$ $photons$ $cm^{-2}$ $s^{-1}$ on the integrated $\gamma$-ray flux at 3$\sigma$ significance level.Comment: 11 pages, 5 figures accepted for publication in Journal of Physics G: Nuclear and Particle Physic

Very High Energy gamma-ray observations of Mrk 501 using TACTIC imaging gamma-ray telescope during 2005-06

In this paper we report on the Markarian 501 results obtained during our TeV $\gamma$-ray observations from March 11 to May 12, 2005 and February 28 to May 7, 2006 for 112.5 hours with the TACTIC $\gamma$-ray telescope. During 2005 observations for 45.7 hours, the source was found to be in a low state and we have placed an upper limit of 4.62 $\times$ 10$^{-12}$ photons cm$^{-2}$ s$^{-1}$ at 3$\sigma$ level on the integrated TeV $\gamma$-ray flux above 1 TeV from the source direction. However, during the 2006 observations for 66.8h, detailed data analysis revealed the presence of a TeV $\gamma$-ray signal from the source with a statistical significance of 7.5$\sigma$ above $E_{\gamma}\geq$ 1 TeV. The time averaged differential energy spectrum of the source in the energy range 1-11 TeV is found to match well with the power law function of the form ($d\Phi/dE=f_0 E^{-\Gamma}$) with $f_0=(1.66\pm0.52)\times 10^{-11}cm^{-2}s^{-1}TeV^{-1}$ and $\Gamma=2.80\pm0.27$.Comment: 16 pages and 8 Figures Accepted for publication in the Journal of Physics

Physics at Future Hadron Colliders

We discuss the physics opportunities and detector challenges at future hadron colliders. As guidelines for energies and luminosities we use the proposed luminosity and/or energy upgrade of the LHC (SLHC), and the Fermilab design of a Very Large Hadron Collider (VLHC). We illustrate the physics capabilities of future hadron colliders for a variety of new physics scenarios (supersymmetry, strong electroweak symmetry breaking, new gauge bosons, compositeness and extra dimensions). We also investigate the prospects of doing precision Higgs physics studies at such a machine, and list selected Standard Model physics rates

Should BRAFV600E be Incorporated into Treatment Recommendations for Thyroid Cancer?

Around 90% of all well-differentiated thyroid cancers are papillary thyroid carcinomas (PTC). PTCs have a recurrence rate of around 20% and a low mortality rate of around 5%. Within PTCs, around 60% of them have the BRAFV600E mutation. Currently, there is a debate on whether BRAFV600E is an independent predictor of tumor aggressiveness and recurrence. This study looks at whether BRAFV600E is an independent predictor of recurrence and outcomes in PTC. Tissue microarrays (TMA) were made from well-differentiated thyroid tumors and stained for the BRAFV600E mutation. BRAFV600E expression was calculated using an H-score: the staining intensity (0-3) multiplied by the amount of tumor that stained positive. A univariate analysis showed that BRAFV600E was significantly associated with age (p=0.0259), gender (p=0.019), extrathyroidal extension (p=0.049), positive margins (p=0.033), lymph node ratio (p=0.0106), N stage (p=0.015), AJCC 8 stage (p=0.0042), ATA risk category (p=0.018), and time to recurrence (p=0.0487). A multivariable analysis found that only extrathyroidal extension was an independent predictor of recurrence. Overall, BRAFV600E was not an independent predictor of recurrence in this cohort. Current treatment plans based on risk of recurrence appear to be appropriate, and it is not recommended that BRAFV600E be included as an independent variable.https://digitalcommons.unmc.edu/surp2021/1058/thumbnail.jp

Observations of TeV gamma-rays from Mrk 421 during Dec. 2005 to Apr. 2006 with the TACTIC telescope

The TACTIC $\gamma$-ray telescope has observed Mrk 421 on 66 clear nights from Dec. 07, 2005 to Apr. 30, 2006, totalling $\sim$ 202 hours of on-source observations. Here, we report the detection of flaring activity from the source at $\geq$ 1 TeV energy and the time-averaged differential $\gamma$-ray spectrum in the energy range 1-11 TeV for the data taken between Dec. 27, 2005 to Feb. 07, 2006 when the source was in a relatively higher state as compared to the rest of the observation period. Analysis of this data spell, comprising about $\sim$97h reveals the presence of a $\sim 12.0 \sigma$ $\gamma$-ray signal with daily flux of $>$ 1 Crab unit on several days. A pure power law spectrum with exponent $-3.11\pm0.11$ as well as a power law spectrum with an exponential cutoff $(\Gamma = -2.51\pm0.26$ and $E_0=(4.7\pm2.1) TeV)$ are found to provide reasonable fits to the inferred differential spectrum within statistical uncertainties. We believe that the TeV light curve presented here, for nearly 5 months of extensive coverage, as well as the spectral information at $\gamma$-ray energies of $>$ 5 TeV provide a useful input for other groups working in the field of $\gamma$-ray astronomy.Comment: 13pages,4figures; Accepted for publication in Astroparticle Physic

Data processing model for the CDF experiment

The data processing model for the CDF experiment is described. Data processing reconstructs events from parallel data streams taken with different combinations of physics event triggers and further splits the events into datasets of specialized physics datasets. The design of the processing control system faces strict requirements on bookkeeping records, which trace the status of data files and event contents during processing and storage. The computing architecture was updated to meet the mass data flow of the Run II data collection, recently upgraded to a maximum rate of 40 MByte/sec. The data processing facility consists of a large cluster of Linux computers with data movement managed by the CDF data handling system to a multi-petaByte Enstore tape library. The latest processing cycle has achieved a stable speed of 35 MByte/sec (3 TByte/day). It can be readily scaled by increasing CPU and data-handling capacity as required.Comment: 12 pages, 10 figures, submitted to IEEE-TN