Plane-stress, elastic-plastic states in the vicinity of crack tips

Plane stress analysis of elastic-plastic states in vicinity of straight crack tip in thin plat

Crystalline phases in chiral ferromagnets: Destabilization of helical order

In chiral ferromagnets, weak spin-orbit interactions twist the ferromagnetic order into spirals, leading to helical order. We investigate an extended Ginzburg-Landau theory of such systems where the helical order is destabilized in favor of crystalline phases. These crystalline phases are based on periodic arrangements of double-twist cylinders and are strongly reminiscent of blue phases in liquid crystals. We discuss the relevance of such blue phases for the phase diagram of the chiral ferromagnet MnSi.Comment: 6 pages, 5 figures (published version

Utility of Papanicolaou’s smears in the diagnosis of premalignant and malignant lesions of the cervix in a tertiary care centre of South Gujarat, India

Background: "Preventable but not prevented", this is the reality of cervical cancer today, at least in developing countries. 80% of all the cases of cervical cancer occur in these developing countries. In India, cervical cancer is the leading cause of cancer related deaths in women. The Papanicolaou test is simple, quick, and painless. It is capable of detecting cervical cancer at an early stage and is used widely in developed countries, where it has decreased both the incidence and mortality of cervical cancer. Objective of the study was conducted to determine the importance of conventional Pap smears for the diagnosis of inflammatory, premalignant and malignant lesions of the cervix.Methods: This cross-sectional study was conducted from January 2017 to June 2018 on 2000 women coming for a Pap smear examination in Government Medical College attached to New Civil Hospital, Surat. After doing Pap stain, all cases were reported as per the 2014 Bethesda system.Results: A total of 2000 cases of Pap smears were received out of which 1914(95.7%) cases were satisfactory for evaluation, 86(4.3%) cases were unsatisfactory. The frequency of epithelial abnormalities was 3.66%. The age group of 51-60 years showed the highest epithelial abnormalities. The frequency of epithelial abnormalities in asymptomatic women was 2.3%. Out of the 1844 cases, 103(5.6%) showed changes of atrophy, 1011(54.8%) cases showed inflammatory/reactive changes, whereas organisms were seen in 558(30.3%) cases.Conclusions: Pap smear happens to be an economical, safe and pragmatic diagnostic tool for early detection of cervical cancer

Nature of heterochromatin

This article does not have an abstract

Unsteady Model Estimation for Generic T-Tail Transport Aircraft Using Computational Data

Models including nonlinear and unsteady behaviors are developed for the longitudinal axis of the NASA Generic T-Tail Aircraft over a large range of angle of attack. These models are based on computational simulations of forced-oscillation tests in a wind tunnel. This work continues a recent study and an ongoing effort by NASA to improve aircraft simulations for pilot training in loss-of-control and stalled conditions. The objective of this work is to develop appropriate aerodynamic models that provide representative responses in simulation for a given class of aircraft. In the stall region, nonlinear unsteady responses are often present and may require an extended aerodynamic model compared to that used in the conventional flight envelope. In this study, two objectives are addressed. The first is to obtain representative models for the NASA Generic T-Tail aircraft over a wide range of angle of attack and the second is to continue development of a specialized CFD test technique that uses Schroeder sweeps to create information rich responses for unsteady aerodynamic model identification

Localizing gravitational wave sources with optical telescopes and combining electromagnetic and gravitational wave data

Neutron star binaries, which are among the most promising sources for the direct detection of gravitational waves (GW) by ground based detectors, are also potential electromagnetic (EM) emitters. Gravitational waves will provide a new window to observe these events and hopefully give us glimpses of new astrophysics. In this paper, we discuss how EM information of these events can considerably improve GW parameter estimation both in terms of accuracy and computational power requirement. And then in return how GW sky localization can help EM astronomers in follow-up studies of sources which did not yield any prompt emission. We discuss how both EM source information and GW source localization can be used in a framework of multi-messenger astronomy. We illustrate how the large error regions in GW sky localizations can be handled in conducting optical astronomy in the advance detector era. We show some preliminary results in the context of an array of optical telescopes called BlackGEM, dedicated for optical follow-up of GW triggers, that is being constructed in La Silla, Chile and is expected to operate concurrent to the advanced GW detectors.Comment: 8 pages, 8 figures, Proceeding for Sant Cugat Forum for Astrophysic