Loglinear Model for Assessment of Risk Factors of Occupational Injuries in Underground Coal Mines

In this study a loglinear model has been investigated to evaluate the role of various factors in coal mine injuries. Data on the varieties namely age, safety performance, working condition, safety environment, management and supervision, emotional stability, job involvement, job satisfaction, and job stress have been collected through questionnaire survey. The associations of the risk factors with occupational injuries are assessed through adjusted odds ratios (OR). The case study results reveal that significant contributing factors responsible for injuries are emotional stability (OR 2.36, 95% confidence interval(CI) 1.51-3.67), working condition (OR 2.14, 95% CI 1.37-3.35), safety performance (OR 2.04, 95% CI 1.30-3.17), safety environment (OR 1.96, 95% CI 1.25-3.06), and age with two ORs of 1.84 (95% CI 1.04 to 3.28), and 2.38 (95% CI 1.27 to 4.45). Identification of these risk factors of injuries will provide valuable information in injury preventive programs

Second-order topological superconductor via noncollinear magnetic texture

We put forth a theoretical framework for engineering a two-dimensional (2D) second-order topological superconductor (SOTSC) by utilizing a heterostructure: incorporating noncollinear magnetic textures between an s-wave superconductor and a 2D quantum spin Hall insulator. It stabilizes the higher order topological superconducting phase, resulting in Majorana corner modes (MCMs) at four corners of a 2D domain. The calculated non-zero quadrupole moment characterizes the bulk topology. Subsequently, through a unitary transformation, an effective low-energy Hamiltonian reveals the effects of magnetic textures, resulting in an effective in-plane Zeeman field and spin-orbit coupling. This approach provides a qualitative depiction of the topological phase, substantiated by numerical validation within exact real-space model. Analytically calculated effective pairings in the bulk illuminate the microscopic behavior of the SOTSC. The comprehension of MCM emergence is aided by a low-energy edge theory, which is attributed to the interplay between effective pairings of (px + py )-type and (px + ipy )-type. Our extensive study paves the way for practically attaining the SOTSC phase by integrating noncollinear magnetic textures

On the role of pressure anisotropy for relativistic stars admitting conformal motion

We investigate the spacetime of anisotropic stars admitting conformal motion. The Einstein field equations are solved using different ansatz of the surface tension. In this investigation, we study two cases in details with the anisotropy as: [1] $p_t = n p_r$ [2] $p_t - p_r = \frac{1}{8 \pi}(\frac{c_1}{r^2} + c_2)$ where, n, $c_1$ and $c_2$ are arbitrary constants. The solutions yield expressions of the physical quantities like pressure gradients and the mass.Comment: 21 pages, accepted for publication in 'Astrophysics and Space Science

Complications of neck dissection: Our initial experience

Abstract: Introduction: Neck dissection is an important surgical procedure to treat head-neck cancers. It also helps to stage the disease as well as denotes further treatment plan. Materials and Methods: A retrospective analytical study is done between August 2017-July 2021 in tertiary care hospital to identify methods and practices to reduce complications of neck dissection. 104 patients who met the selection criteria were reviewed. Any intraoperative as well as post-operative complication was carefully assessed and managed as per protocol. Results: 62.5% were in the age group of 49-59 years. 66.35% were male. Maximum patient (65.38%) presented with oral cavity squamous call carcinoma. 51.92% had N1 neck node while 44.23% had N0 neck node. Internal jugular vein injury, spinal accessory nerve and marginal mandibular nerve injury, post-operative hematoma, seroma formation, chyle leak were found as significant complications in initial days. They were less in number or managed well with experience. Conclusion: Detailed knowledge of head-neck anatomy, meticulous dissection technique, early detection of any complication and its management can decrease the long-term morbidity and improve patient’s quality of life.   Keywords: Neck dissection, head-neck cancer, complication, meticulous haemostasis

Assessing Smell Alteration as Clinical Feature of COVID-19: A Descriptive Study in a Rural Based Tertiary Care COVID Hospital

Introduction COVID-19 is an ongoing viral pandemic and a very contagious disease. Other than common symptoms like fever, cough and malaise; alteration in smell and taste perception may be the presenting symptoms in a significant number of patients infected with COVID-19. Materials and Methods Presence of smell alteration assessed among 150 mild to moderate COVID-19 positive patients admitted at our COVID hospital as well as 150 COVID-19 negative patients in May-June, 2021. Use and throw smell cards were used to detect smell alteration for all. Symptom onset and its resolution were noted. Smell alteration was also evaluated in different age group and gender. Results 81 (54%) patients among 150 COVID positive cases had smell alteration compared to 9 (6%) patients among non-COVID arm (p value <0.0001). Overall smell alteration was more prevalent among male COVID patients. Hyposmia is more prevalent among younger age group compared to anosmia, which is more among older side. Olfactory dysfunction is seen to be developed at presentation or within 5 days from starting of infection with other symptoms. More than 90% patients regained smell perception within two months post infection. Conclusion 54% COVID positive patients reported smell loss either at presentation or within 5 days of infection. Using smell cards for smell assessment and being cautious about smell alteration as early symptom helps us to diagnose COVID-19 early

A thermally stable {FeNO}(8) complex: properties and biological reactivity of reduced MNO systems

Reduced nitrogen oxide ligands such as NO−/HNO or nitroxyl participate in chemistry distinct from nitric oxide (NO). Nitroxyl has been proposed to form at heme centers to generate the Enemark–Feltham designated {FeNO}8 system. The synthesis of a thermally stable {FeNO}8 species namely, [Co(Cp*)2][Fe(LN4)(NO)] (3), housed in a heme-like ligand platform has been achieved by reduction of the corresponding {FeNO}7 complex, [Fe(LN4)(NO)] (1), with decamethylcobaltocene [Co(Cp*)2] in toluene. This complex readily reacts with metMb, resulting in formation of MbNO via reductive nitrosylation by the coordinated HNO/NO−, which can be inhibited with GSH. These results suggest that 3 could serve as a potential HNO therapeutic. Spectroscopic, theoretical, and structural comparisons are made to 1 and the {CoNO}8 complex, [Co(LN4)(NO)] (2), an isoelectronic analogue of 3