Quaternion Gravi-Electromagnetism

Defining the generalized charge, potential, current and generalized fields as complex quantities where real and imaginary parts represent gravitation and electromagnetism respectively, corresponding field equation, equation of motion and other quantum equations are derived in manifestly covariant manner. It has been shown that the field equations are invariant under Lorentz as well as duality transformations. It has been shown that the quaternionic formulation presented here remains invariant under quaternion transformations.Comment: Key Words: Quaternion, dyons, gravito-dyons, gravi-electromagnetism. PACS No.: 04.90. +e ; 14.80. H

Assessment of phthalate esters (PAEs) contamination in Urtica dioica L.

Phthalate esters are a group of chemical compounds of ubiquitous nature which nowadays have become a colossal threat to the environment, human-animal and plant health, because of its higher potential of accumulation in soil and aquatic habitat leading to environmental contamination due to its widespread industrial and agricultural usage. The present research aims to analyze the phthalate esters accumulation in Urtica dioica L. For this study, the Urtica dioica is tested for the presence of phthalates by using Gas Chromatography-Mass spectrometry. The Gas Chromatography-Mass spectrometry observations show the presence of 11 phthalate esters, among which diethyl phthalate (DEP) and bis(2-ethylhexyl) phthalate (BEHP), dibutyl phthalate (DBP), and diisobutyl phthalate (DIBP) were found to be in significantly higher amount. The sum concentrations of the phthalate ester in different extracts of plant range from 16.25% to 84.07%. The % composition of diethyl phthalate is found to be comparatively higher than other phthalate esters in methanolic extract of Urtica dioica while diisobutyl phthalate and bis (2-ethylhexyl) phthalate accumulation is found relatively higher in the ethyl acetate and diethyl ether fractions. The observations show the contamination of the Urtica dioica plant with phthalate esters and also indicate the phthalate accumulating potential of the plant

Prestressed concrete targets under high rate of loading

© The Author(s) 2018. Prestressed concrete is highly being preferred as material for construction in the case of strategic and relevant structures such as, for instance, nuclear containments, armor deposits, shelters, bridges, and military bunkers. It is highly durable, fire and corrosion resistant, and non-porous. In order to study the influence of prestressing on the mechanics of deformation, energy absorption capacity, and failure modes of concrete targets, finite element simulations have been carried out using hard steel bullets and compared with the experiments carried out by the authors earlier. Prestressed concrete targets of plan size 450 mm × 450 mm and thickness of 80 mm were impacted by 0.5-kg hard steel projectiles. The concrete was designed to obtain an unconfined compressive strength of 48 MPa. An initial stress of 10% magnitude of compressive strength was induced by 4-mm-diameter high-tensile-strength (1700 MPa) steel wires in prestressed concrete targets. A grid of 8-mm-diameter steel bars was inserted in the reinforced and prestressed concrete targets to enable the straight comparison between these concretes. The prestressing in concrete has been found to be effective in reducing the volume of scabbed material as well as the ballistic resistance of prestressed concrete targets. The ballistic limit of prestressed concrete with 10% induced stress was found to be, respectively, 14% higher than that of the plain concrete target and 10.2% higher than the reinforced concrete. Failure modes predicted through finite element simulations were found in agreement with that of the actual results

Prevalence of thyroid disorders among patients attending the antenatal clinic at tertiary care centre, Parel, Mumbai, India

Background: Pregnancy is associated with major changes in the physiology of the thyroid gland. Undiagnosed thyroid disorders can adversely affect fetal and maternal outcome. This study was done to study the prevalence of thyroid disorder among antenatal women.Methods: This was a prospective study done in the antenatal clinic in the Department of Obstetrics and Gynaecology, ESI PGIMSRMGM Hospital, Parel, Mumbai, India.Results: In present study, fifty out of three hundred and fifty pregnant women screened had thyroid disorder. The prevalence of thyroid disorder in this study was 14.2%. The prevalence of subclinical hypothyroidism was 7.7% (n= 27), overt hypothyroidism was 4% (n=14), subclinical hyperthyroidism was 1.7% (n=6) and overt hyperthyroidism was 0.8% (n=3).Conclusions: Thyroid disorders in pregnancy are associated with adverse fetomaternal outcome. Its prevalence is high in Indian women. Thus thyroid screening should be included in the routine antenatal investigations

Modulated structure in the martensite phase of Ni1.8Pt0.2MnGa: a neutron diffraction study

7M orthorhombic modulated structure in the martensite phase of Ni1.8Pt0.2MnGa is reported by powder neutron diffraction study, which indicates that it is likely to exhibit magnetic field induced strain. The change in the unit cell volume is less than 0.5% between the austenite and martensite phases, as expected for a volume conserving martensite transformation. The magnetic structure analysis shows that the magnetic moment in the martensite phase is higher compared to Ni2MnGa, which is in good agreement with magnetization measurement

Unified Angular Momentum of Dyons

Unified quaternionic angular momentum for the fields of dyons and gravito-dyons has been developed and the commutation relations for dynamical variables are obtained in compact and consistent manner. Demonstrating the quaternion forms of unified fields of dyons (electromagnetic fields) and gravito-dyons (gravito-Heavisidian fields of linear gravity), corresponding quantum equations are reformulated in compact, simpler and manifestly covariant way

Knowledge, attitudes, and practices among healthcare providers on cervical cancer, human papilloma virus and it’s vaccine at ESI PGIMSR, MGM Hospital Parel Mumbai, India

Background: Cervical cancer is the second most common cause of cancer in females Worldwide and nearly 85% of the cervical cancer cases are diagnosed in developing countries. The health care providers can play an important role in promoting cervical cancer screening and knowledge about HPV vaccination. So this study was conducted to assess the knowledge, attitude and practices regarding cervical cancer screening and HPV vaccination and to analyze the factors influencing the knowledge about HPV vaccination, among nursing staff.Methods: A cross-sectional study was conducted among 143 nurses and 75nursing students (total 218) at ESIPGIMSR MGM Hospital, Parel Mumbai. Data was collected using Questionnaire, designed based on the study objectives.Results: 73 (33.49%) of the nurses did received education on cervical cancer and HPV in the past. Most of the nurses, 184 (84.4%) considered that they were at no risk of cervical cancer. 143 (65.60%) nurses knew that Pap smear can be done to screen patients. Out of 141 married nurses, only 39 (27.28%) regularly had a gynaecological examination and 105 (74.47%) had never done Pap smear. In addition, 119 (54.59%) participants did not know at what age Pap smear should commence. Only 73 (33.49%) nurses knew about the route of transmission of HPV and 57 (26.15%) knew about HPV vaccine. 215 (98.62%) nurses did not receive an HPV vaccine.Conclusions: The nurses and nursing students did not have prior adequate education on cervical cancer, HPV, and vaccine and the desired level of knowledge on risk factors and signs of cervical cancer and prevention of the disease