12 research outputs found

    Generation and characterization of ultrafine particles in laboratory studies and their mass deposition at the air-liquid interface

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    Ultrafine particles (UFPs, ≤100 nm) contribute to air pollution's health impacts, but their toxicity drivers are unclear. This study generated soot UFPs with similar cores but varying chemical loads (e.g., PAHs) and tested them on A549 cells in ALI systems. Higher PAH content increased xenobiotic metabolism, showing chemical composition's role. Soot and copper UFPs, matched physically, revealed higher-than-predicted mass deposition in ALI systems, highlighting model limitations. The method enables precise UFP property control, advancing reproducible toxicity assessments

    Transmutative Visual Culture of Folk Festivals : A study and exploration of \u27Magh Bihu\u27 (BANDUNG CREATIVE MOVEMENT 2015 2nd International Conference on Creative Industries “Strive to Improve Creativity“)

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    Folk festivals in India are related to agriculture and productivity. The social manners, customs, habits etc. are the principle elements with which these festivals are integrated. In Assam, Bihu serves as the most important marker of cultural assimilation that unites various indigenous groups and all such diverse constituents of Assamese nationality. It is a unified form of the folk songs, dances, musical instruments of the various castes, sub-castes and tribes of people, the natives of Assam. As a form of performing art, folk festivals have always been an important part of culture and community life. Historically and traditionally rooted in an indigenous culture, it provides sites for meaningful social connectivity and exchange. In present times, the celebration of folk festivals like Bihu has taken a new dimension leading to the emergence of new vocabularies of celebration veering towards public design. These festivals have taken a particular artistic and designer profile that exhibit the influences of various cultural elements. This study was undertaken to explore and understand the anatomy of this newly configured popular display of cultural elements that has given rise to new vocabularies in Design and Visual Culture in an Urban/Rural setting. This provides a new dimension for Design thinking in Visual Culture where the vernacular practices of art and craft are brought into dialogue with the transmutating needs of modern cultural demands. It further leads one to analyze and observe how the artifacts associated with a folk festival reinterpret their symbolic meanings through various inter and intra cultural interactions over time. Keywords: Local identities, Local cultural heritage, Creative design process, Art Technology and Visual Cultur

    Analysing the effects of dual time delays and terror funding class in terrorism dynamics

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    In this paper, we develop a novel five-compartment terrorism dynamics model that explicitly incorporates a terror funding class, thereby capturing the critical role of financial resources in sustaining recruitment, logistics, and operational activities. To better reflect real-world processes, the model introduces two discrete time delays: τ1, representing the indoctrination period required for susceptible individuals to become terrorists, and τ2, denoting the lag associated with transferring terrorists to the recovered or quarantined classes. The main contributions of this work include: (i) the formulation of a funding-integrated terrorism model with dual delays; (ii) a complete mathematical analysis of positivity, boundedness, and equilibrium stability; (iii) derivation of the basic reproduction number ℛ0 and a sensitivity analysis identifying the parameters that most strongly influence terrorism persistence; and (iv) a rigorous investigation of delay-induced destabilisation and Hopf bifurcation. For the non-delayed system, we establish conditions ensuring the existence and local stability of the terror-free equilibrium when ℛ01. For the delayed system, we demonstrate that increasing either τ1 or τ2 beyond their respective critical thresholds leads to Hopf bifurcations and sustained oscillations, representing recurrent waves of terrorist activity. Numerical simulations are provided to validate the analytical results. Overall, the study offers insight into how the speed of radicalisation, operational delays, and financial resources interact to shape terrorism dynamics, with potential implications for the design of more effective counter-terrorism policies

    Analysis of the prevalence, etiology, and risk factors of stillbirth from a teaching institute of North Eastern India- a retrospective study

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    Background: Stillbirth rate is considered a health index. The worldwide stillbirth rate is 18.4/1000 total birth. This study was aimed to evaluate the prevalence and risk factors of intrauterine fetal death in pregnant women in one of the teaching centers in Northeastern India.Methods: This was a retrospective study. All cases of intrauterine fetal death admitted in the department of obstetrics gynecology of our institute were included over two and half years. Information was gathered from the medical records of the patients and data were analyzed.Results: During two and half year’s period, the total number of deliveries was 2696 and the total numbers of stillbirths were 96, hence the stillbirth rate was 35.6/1000. 93 (96.87%) were antenatal stillbirths and 3 (3.12%) were intrapartum stillbirths. 82 (85.41%) women were unbooked. 85 (90.4%) belonged to low socioeconomic status. 67 (69.79%) were preterm. Maximum 39 (40.62%) belonged to 28-35 weeks of gestational age. The most common cause of Intrauterine death (IUD) was antepartum hemorrhage (17.7%). 14 (14.5%) were abruption and 3 were placenta previa. The second most common cause (14.5%) was the hypertensive disorder of pregnancy.Conclusions: The stillbirth rate in our institute is higher than the national average. The most common causes of IUD were antepartum hemorrhage, preeclampsia, prematurity, and malpresentation which can be diagnosed and managed by increasing uptake of antenatal care which will lead to timely identification and proper management of maternal and fetal complications eventually reducing the preventable stillbirths
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