The effect of 15% MnO on the phase relations in the system CaO-FeO-SiO₂ at 1450ºC

A study was made of the phase relations at 1450ºC in the systems CaO-FeO-SiO₂ and CaO-FeO-SiO₂ -15% MnO, in equilibrium with metallic iron. The stability region of different phases was determined by microscopic examination and electron-beam microprobe analysis of the quenched specimens. The effect of 15% MnO on the liquid saturation boundary of the system CaO-(FeO+MnO)-SiO₂ was discussed in terms of the effect of MnO on slag making reactions in the Basic Oxygen Furnace steelmaking process --Abstract, page ii

Competition of L21 and XA Ordering in Fe2CoAl Heusler Alloy: A First-Principles Study

The physical properties of Fe2CoAl (FCA) Heusler alloy are systematically investigated using the first-principles calculations within generalized gradient approximation (GGA) and GGA+U. The influence of atomic ordering with respect to the Wyckoff sites on the phase stability, magnetism and half metallicity in both the conventional L21 and XA phases of FCA is focused in this study. Various possible hypothetical structures viz., L21, XA-I, and XA-II are prepared by altering atomic occupancies at their Wyckoff sites. At first, we have determined the stable phase of FCA considering various non-magnetic (or paramagnetic), ferromagnetic (FM) and antiferromagnetic (AFM) configurations. Out of these, the ferromagnetic (FM) XA-I structure is found to be energetically most stable. The total magnetic moments per cell are not in agreement with the Slater-Pauling (SP) rule in any phases; therefore, the half-metallicity is not observed in any configurations. However, FM ordered XA-I type FCA shows 78% spin polarization at EF. Interestingly, the results of XA-I type FCA are closely matched with the experimental results.Comment: 15 pages, 6 figure

Prototyping Energy Efficient Thermo-Magnetic & Induction Hardening for Heat Treat & Net Shape Forming Applications

Within this project, Eaton undertook the task of bringing about significant impact with respect to sustainability. One of the major goals for the Department of Energy is to achieve energy savings with a corresponding reduction in carbon foot print. The use of a coupled induction heat treatment with high magnetic field heat treatment makes possible not only improved performance alloys, but with faster processing times and lower processing energy, as well. With this technology, substitution of lower cost alloys for more exotic alloys became a possibility; microstructure could be tailored for improved magnetic properties or wear resistance or mechanical performance, as needed. A prototype commercial unit has been developed to conduct processing of materials. Testing of this equipment has been conducted and results demonstrate the feasibility for industrial commercialization

Bayesian Analysis of Generalized Exponential Distribution

Bayesian estimators of unknown parameters of a two parameter generalized exponential distribution are obtained based on non-informative priors using different loss functions

A CROSS-SECTIONAL STUDY ON MENTAL HEALTH AND CARDIOVASCULAR REACTIVITY AMONG FRESH RESIDENT DOCTORS DURING COVID19 PANDEMIC IN INDIA

Objective: The adverse psychological impact in doctors battling the Corona Virus Disease 2019 (COVID 19) epidemic arise from various social and administrative issues like excessive workload, inadequate interpersonal communications, biased work culture and lack of social support thus raising a warning of the mental health in doctors. The present study was done to assess the mental health and stress reactivity among the resident doctors who have been working for a prolonged duration during covid 19 pandemic in India. Methods: The subjects included 162 young resident doctors both males and females, of age group between 25-30 y, among which 92 were posted in covid wards on a rotation basis from 1st April 2020 to 31st December 2020 and 70 were doing duty in regular non-covid wards or not had done even a single duty in covid ward during the above period. All participants completed an online questionnaire that included the Beck Anxiety Inventory (BAI), the Beck Depression Inventory (BDI)–II, Connor-Davidson resilience scale (CDRISC) and Social Support Rating Scale (SSRS) followed by a cold pressor test to assess stress reactivity. Results: There were significant differences in the mental health and stress reactivity scores with lower resilience scores, lower social support rating scores, increased anxiety and depression in Covid ward doctors (p=0.001). Conclusion: The findings suggested high levels of training, resilience helpful social support and unbiased work culture were necessary to health care workers engaged in public health emergence

Bayesian Analysis of Location-Scale Family of Distributions Using S-PLUS and R Software

The Normal and Laplace’s methods of approximation for posterior density based on the location-scale family of distributions in terms of the numerical and graphical simulation are examined using S-PLUS and R Software

PYODERMA GANGRENOSUM AND ITS HEALING WITH HERBO-MEDICINAL OINTMENT MARHAM-E-RAAL – A CASE STUDY

Pyoderma gangrenosum (PG) is one which is supposed to be a quickly growing and harshly devastating skin disease. Ulcers are frequently deep and painful, distinguished by aggressive (purple-colored) margins. The etiology of this disease is almost uncertain. The disease may be idiopathic or associated with some other chronic illness like inflammatory bowel disease; including Crohn's disease, or hematological or rheumatic ailments. Basically it is supposed to be an auto-immune disease. If the disease is left untreated, the ulcers may last several months or few years. Treatment in modern medicine includes high doses of steroids and intravenous immunoglobulin. In our case series the patient of pyoderma gangrenosum who had taken the steroids in a high dose is treated with topical ointment i.e. Marham-e-raal and Unani immunomodulator drugs. A male patient of PG was taken into study and was given oral Unani formulations and a herbo-medicinal ointment; Marham-e-raal for local application for 1 month. PG of lower limbs presents with burning and non healing chronic ulcers which are often resilient to healing either by steroids or antibiotics. The optimal treatment of PG is oral use of Unani immune-modulators and topical application of Marham-e-raal. The patient was managed with the same treatment and within the follow up of 2 months; there was no sign of PG