A STUDY TO EVALUATE OF TIME SINCE DEATH FROM POTASSIUM LEVEL OF VITREOUS HUMOUR

Introduction: Estimation of time since death plays a crucial roles in law enforcement agencies in most of the unnatural deaths. Estimation of post-mortem interval from changes of potassium level in vitreous humour is more diagnostic tool for forensic field. Material & methods: We prospectively studied 200 cases having known time since death for the present study at the Dept. of Forensic Medicine & Toxicology, Govt. Medical College, Surat in the year of 2015-2016. Level of potassium in vitreous humor in all subject were analysed in Bio-chemistry laboratory on the same day and various statistical tests performed. Observation: In this study age of the subjects were mostly from 26-35 years and predominantly male gender. Samples collected for this study were from 12-24 hours of post mortem interval with linear rise of potassium level in both eyes. Conclusion: Time since death was more accurately calculated with the help of potassium concentration of vitreous humour

Using computational fluid dynamics to explore new hydrokinetic fluid coupling design for industrial applications

This study presents the initial design and computational investigation of a traction-type hydrokinetic fluid coupling for industrial applications. The problem addressed is the limited availability of validated mathematical and computational models for optimizing impeller–runner design and oil selection in fluid couplings. The objective is to establish an empirical–computational framework that combines dimensional analysis with CFD simulations to accurately predict operating behavior. The impeller and runner were designed using dimensional analysis–based empirical relations, supported by assumptions of incompressible flow, constant density, and steady-state operating conditions with a slip of 2–3 %. The theoretical oil mass required for power transmission was calculated using Rolfe’s hydrodynamic equations, and validated against actual industry data. For a 420-size coupling operating at 1500 rpm impeller speed and 1450 rpm runner speed, the predicted oil requirement was 9.33 L versus the actual 10.05 L. CFD analysis employing a moving mesh and k–ω turbulence model revealed a maximum dynamic pressure of 5.4 bar and tangential velocity of 34 m/s, which produced a torque of 507.3 Nm and transmitted power of 79.9 kW, matching the rated 80 kW within 0.13 %. These results confirm that the proposed empirical–CFD framework accurately captures pressure distribution, vortex dynamics, and slip characteristics, thereby validating the mathematical assumptions. The study establishes a robust base for optimizing hydrokinetic couplings to achieve 95–98 % efficiency with reduced slip, and provides insights for future improvements in rib geometry, oil filling strategies, and material selectio

Infantile sternal tuberculosis: A rare condition

Background: Tuberculosis (TB) of sternum is one of the rarest forms of skeletal TB. Incidence of sternal TB has been calculated to be <1.5% amongst osteo-articular TB, with very few cases reported in infants. Due to its subtle signs and symptoms, early diagnosis of this entity becomes a challenge. Clinical Description: We reported case of 6-month-old boy who presented with complaints of progressively increasing swelling at the anterior chest wall. Radiological, histological, and microbiological investigations helped establish a diagnosis of infantile sternal TB. Management: Drainage of the lesion and excision of affected necrotic tissue was done. Culture and histopathological examination were suggestive of tubercular osteomyelitis of sternum. Weight adjusted antitubercular medications were given for 1 year. At 3 years of follow-up, the lesion had healed well without any recurrence, sinus formation or local deformity. Conclusions: High index of suspicion and detailed diagnostic work up are required for early diagnosis and management of infantile sternal tuberculous osteomyelitis

Reliable Data in Cloud Using Re-Encryption

Abstract- A data distributor has given sensitive data to a set of supposedly trusted agents (third parties). Some of the data are leaked and found in an unauthorized place (e.g., on the web or somebody’s laptop). We propose data allocation strategies that improve the probability of identifying leakages. In Image and Video we can apply watermarking for detecting guilty agent. All the data will be stored on the cloud so Reliable Re-encryption in unreliable clouds technique is used. In this data owner store encrypted data in the cloud, and issue decryption keys to authorized users. When a user is revoked, the data owner will issue re-encryption commands to the cloud to re-encrypt the data, to prevent the revoked user from decrypting the data, and to generate new decryption keys to valid users, so that they can continue to access the data. In this project a time based reencryption scheme is used for cloud servers to automatically reencrypt data based on their internal clocks

EFFECT OF PREOPERATIVE ISOMETRIC EXERCISES ON CEPHALIC VEIN DIAMETER IN AV FISTULA PATIENTS

Purpose: Incidence rate of arteriovenous stula (AVF) is not very high. AVF formation is often not attempted due to small cephalic vein (CV) diameter. We hypothesized that forearm CV diameter can increase by isometric handgrip exercises and gave better results for AVF formation in AVF patients. Methods: All patients with (eGFR&lt;25mL/min/1.73m2; CV&lt;2.5mm) and without prior vascular access were selected. They did regular handgrip exercises in the preferred excercised arm (EA), with the nonexercised arm (NEA) as control. CV diameter was measured at baseline, by ultrasound at four and eight weeks. The primary endpoint was the mean increase in CV diameter. Secondary endpoints were mean CV diameter increase from baseline, increased proportion of potential AVF sites and successful AVF placement. Results: Atotal of 60 patients were selected and 51 nished the study. Mean CVdiameter increased in both the EAand NEAby 0.46-0.75 and 0.45- 0.60 mm, respectively. Compared to baseline, all CV diameters increased signicantly (P&lt;.05) after four weeks. In the EA, mean distal and proximal CV increased from 1.68 to 2.43 mm and from 2.27 to 2.87 mm, respectively. The changes noted in the NEA were not signicant. There were also signicant increases in the number of sites and patients eligible for AVF formation. 16 patients had successful AVF placement. Conclusions: Isometric handgrip exercises resulted in signicant CV diameter increases after eight weeks, in the EAgroup and potentially allows for AVF formation in those not previously deemed patients.</jats:p