Organic Electrochemical Transistors (OECTs): Advancements and Exciting Prospects for Future Biosensing Applications

Over the past few decades, the field of organic electronics has depicted proliferated growth, due to the advantageous characteristics of organic semiconductors, such as tunability through synthetic chemistry, simplicity in processing, cost-effectiveness, and low-voltage operation, to cite a few. Organic electrochemical transistors (OECTs) have recently emerged as a highly promising technology in the area of biosensing and flexible electronics. OECT-based biosensors are capable of sensing brain activities, tissues, monitoring cells, hormones, DNAs, and glucose. Sensitivity, selectivity, and detection limit are the key parameters adopted for measuring the performance of OECT-based biosensors. This article highlights the advancements and exciting prospects of OECTs for future biosensing applications, such as cell-based biosensing, chemical sensing, DNA/ribonucleic acid (RNA) sensing, glucose sensing, immune sensing, ion sensing, and pH sensing. OECT-based biosensors outperform other conventional biosensors because of their excellent biocompatibility, high transconductance, and mixed electronic-ionic conductivity. At present, OECTs are fabricated and characterized in millimeter and micrometer dimensions, and miniaturizing their dimensions to nanoscale is the key challenge for utilizing them in the field of nanobioelectronics, nanomedicine, and nanobiosensing.

Impact of Covid-19 on the Psychology of Coaches

The development of the COVID-19 pandemic, according to the World Health Organization (WHO), raises concerns about heightened stress and anxiety in people's lives. The purpose of this research was to investigate the emotional influence of COVID-19 that professional coaches faced and how they managed to deal with social seclusion during the second wave of COVID-19. More precisely, it was investigated whether the age and educational level of coaches had an impact on their psychological condition during this period. The sample consisted of 605 Greek National coaches, 398 men, 206 women, and one coach who did not indicate sex preference, between the ages of 18-67 (M=38.18, SD=11.19). The results indicated the age differences between the youngest and oldest groups, and between high school and Ph.D. graduates. Overall, it was found that the Greek version of ERQ constitutes a reliable instrument for measuring emotion regulation situations in a professional sports environment.

Psychological Impact on Healthcare Workers of Past SARS and Current COVID-19 Outbreak: A Global Review

The emergence of novel severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) in Wuhan, China during late 2019 spread quickly and creating international emergency and tremendous challenges for healthcare workers (HCWs) including dental and oral healthcare professionals. The brisk spread of this new viral disease forced HCWs to suffer from different types of stress including mortality and morbidity, delayed patient dealing, scarcity of complete personal protective equipment (PPE), and fear of being COVID-19 virus target and carriers to their family members. The dental and oral HCWs were also advised to apply mobility restrictions and social distancing measures. All of a sudden, most of the regular medical check-ups including dental clinic appointments were cancelled, reducing the number of patients flow. The abrupt cancellation of appointments put a sudden break on medical profession including dental practice. Different scales like progression of post-traumatic stress disorder (PTSD), Chinese Health Questionnaire-12 (CHd-12), Davidson Trauma Scale-Chinese (DTS-C), General Health Questionnaire (GHQ), Impact of Event Scale (IES), Perceived Stress Scale (PSS) etc. have been devised in different countries to assess the overall mental health status. The reports from earlier SARS outbreak in 2007 had also put a psychological impact on HCWs but least has been learned from this out break. The reports from previous Middle East respiratory syndrome (MERS) outbreaks and early COVID-19 pandemic have a considerable negative impact (short and long-term) on mental status of HCWs. Different types of negative impacts on mental health like depression, anxiety, sleep disorders and distress were reported in HCWs during COVID-19 pandemic. The current COVID-19 pandemic given a broader understanding of how much, how far and how fast an outbreak can occur and affect HCWs psychologically. In this review, authors summarize the impact of COVID-19 pandemic in the psychology of HCWs, as reported from different countries.Copyright © 2022, Anka Publishers. All rights reserved.

Mental Health of Students at Polish Universities after Two Years of the Outbreak of COVID-19.

BACKGROUND: Mental health deterioration in young adults in the aftermath of the COVID-19 pandemic is being increasingly studied. It is clear that the psychological consequences of the pandemic will be evident for many years, especially among the younger generation, who did not have time to acquire adaptive coping strategies before the outbreak of COVID-19. The purpose of this study was to assess the condition of the mental health of students at Polish universities after two years of the pandemic. The types of coping strategies used by the respondents to deal with stress were also evaluated in order to establish which of them could have a beneficial effect on the psyche of young people. METHODS: This study included 721 participants (age [years]: M = 25.7, SD = 5.3; 269 (37.2%) males) recruited using snowball sampling from students at two universities in Lodz, Poland, and full-time doctoral students from across Poland (phase I of the study was conducted in March 2019 (N = 352); phase II of the study was conducted in April 2022 (N = 369)). The following tools were used in this study: The General Health Questionnaire (GHQ-28) by D. Goldberg, the Perceived Stress Scale (PSS-10), and the Inventory for Measuring Coping with Stress (Mini-COPE) by Carver et al. Pearson's chi-square test and multivariate logistic regression were used in the statistical analysis. RESULTS: The results detailing the condition of the mental health of the subjects, as measured using GHQ-28, were significantly worse in the group surveyed after two years of the pandemic than the results of the survey conducted in March 2019 (adjusted odds ratio for GHQ-28 ≥ 5: 3.66, 95%CI 2.12-6.30, p < 0.001). Statistically significant differences were seen for each of the subscales of the GHQ-28 questionnaire. Most often, the subjects complained of anxiety symptoms and sleep disorders, in addition to somatic symptoms. The risk factors for worsening mental health included female (odds ratio 1.70, 95%CI 1.20-2.40, p = 0.003) and professional inactivity (odds ratio 1.55, 95%CI 1.04-2.31, p = 0.031). On the other hand, the ages of the people surveyed, their relationship status, whether they had children, or the type of university they attended all proved to be insignificant. The following coping strategies had a positive impact on the mental health of the respondents: positive reframing (Z = -2.951; p = 0.003) and seeking emotional support (Z = -2.351; p = 0.019). In contrast, strategies such as self-distraction (Z = 2.785; p = 0.005), denial (Z = 2.948; p = 0.003), venting (Z = 2.337; p = 0.019), self-blame (Z = 5.511; p < 0.001) and behavioral disengagement (Z = 4.004; p < 0.001) were associated with poorer mental health among the respondents. CONCLUSIONS: 1. Of the students surveyed, 33% reported elevated stress levels after two years of the COVID-19 pandemic. 2. The overall mental health of students at Polish universities, as measured by GHQ-28, was significantly worse in the group evaluated after two years of the COVID-19 pandemic, mainly in respect of anxiety symptoms and sleep disorders. 3. Female gender and professional inactivity appeared to be risk factors for the students' worsening mental health, which may be an indication of the need for further research and planning of psychotherapeutic interventions.

MaaS (Mobility as a Service) market futures explored

The term Mobility as a Service (MaaS) refers to a single interface, fully integrated and customised transport service. Whilst the technological barriers to implementing MaaS are steadily being overcome, less is known about how the MaaS eco-system might evolve. This paper unpicks the MaaS concept in light of broader societal trends to suggest how it could evolve and offers insights for practitioners and policy makers. The paper draws on relevant literature, together with discussions with stakeholders, to better understand how MaaS has emerged. It then constructs four future MaaS market scenarios and identifies implications. It is concluded that current expectations of how the MaaS concept may evolve are limited in their understanding of how the transport system could change should MaaS be adopted on a wide scale. The major challenges for policy makers will likely relate to balancing the promised benefits offered with issues such as safety (including bio-safety in our post Covid-19 world), data security and privacy, equity and the threat of dominant suppliers distorting the marketplace. Together, these insights suggest that the MaaS reality may be messy and difficult to manage, and that future transport systems might look very different to now.

Social support during COVID-19: Exploring the psychometric properties of the PSS-JSAS and its relationship with job search activities.

The COVID-19 pandemic has highlighted the importance of social support for everyone. Supports from relatives, neighbors, and friends are more significant for a job seeker, especially during the pandemic. Accordingly, the present study explored the psychometric properties of the Perceived Social Support for Job Search Activities Scale (PSS-JSAS) in the Indian context with the help of two independent samples. First sample of 518 respondents was randomly divided into two subsamples using the random case selection feature in the statistical package for social sciences (SPSS). The exploratory factor analysis (EFA) was performed on the first subsample, which yielded a one-factor model explaining 47.23% of variations. The confirmatory factor analysis (CFA) conducted on the second subsample concluded a good model fit of PSS-JSAS. In the second sample, Cronbach's alpha and composite reliability values (greater than 0.70) established the scale's reliability. Results also revealed that the correlation coefficients between PSS-JSAS score, hope, self-efficacy, resilience, and optimism were 0.470, 0.552, 0.621, and 0.5 at p < 0.01. It also revealed a negative association with job search anxiety scores (r = -0.549, p < 0.01). Thus, PSS-JSAS was positively associated with PsyCap and negatively correlated with job search anxiety behaviors. It concluded the criterion validity of PSS-JSAS in the Indian context. Multigroup factor analysis concludes that the scale is equally valid for both Indian males and females. Hence, results reported adequate reliability and validity of the scale in the Indian context. These findings will encourage future researchers to investigate the phenomena of social support in the job search.

A data-driven decision support system with smart packaging in grocery store supply chains during outbreaks.

The unexpected emergence of the COVID-19 pandemic has changed how grocery shopping is done. The grocery retail stores need to ensure hygiene, quality, and safety concerns in-store shopping by providing "no-touch" smart packaging solutions for agri-food products. The benefit of smart packaging is to inform consumers about the freshness level of a packaged product without having direct contact. This paper proposes a data-driven decision support system that uses smart packaging as a smart product-service system to manage the sustainable grocery store supply chain during outbreaks to prevent food waste. The proposed model dynamically updates the price of a packaged perishable product depending on freshness level while reducing food waste and the number of rejected customers and maximising profit by increasing the inventory turnover rate of grocery stores. The model was tested on a hypothetical but realistic case study of a single product. The results of this study showed that stock capacities, freshness discount rate, freshness period, and quantity discounts significantly affect the performance of a grocery store supply chain during outbreaks.

The Lingering Effects: Examining Mental Health in India during a Period of Covid-19 Regression

PURPOSE: COVID-19 has been recognized as a contagious disease which can cause serious health problems, even proving to be fatal in some cases. The swift spread of COVID-19 epidemic shook the world which led to lockdowns, isolation, and social distancing for the general population so as to curb and contain the spread. This was found to lead to mental health disorders amongst people. This study examines the prevalence and severity of anxiety, stress perception, and well-being levels among the people at the time when the COVID-19 was in regression (decline) in India.METHODS: In this cross-sectional study, 374 respondents' mental health was evaluated using three standardized questionnaires: Generalized Anxiety Disorder [GAD-7], Perceived Stress Scale [PSS-4], and Five Wellbeing Index [WHO-5].RESULTS: The study revealed that almost 82% of respondents had moderate to severe levels of stress while 66% of respondents had mild to moderate levels of anxiety. Overall, 60% of respondents had poor (low) mental well-being. A strong negative correlation was found between mental well-being and perceived stress, and mental well-being and level of anxiety, in comparison to the correlation between anxiety and perceived stress was positive and statistically significant.CONCLUSIONS: This study identified several long-term psychological effects of COVID. The presence of stress and anxiety and poorer mental well-being even at the time of decline in COVID-19 cases, highlights the need for serious attention to be given to psychological and psychiatric help and support throughout the duration and regression of such diseases. Health policymakers must ensure coherent and consistent plans for screening the mental health of the general population are in place to provide the required support in managing the long-term psychological and psychiatric effects of COVID.

Radio Frequency Heating of Washable Conductive Textiles for Bacteria and Virus Inactivation.

The ongoing COVID-19 pandemic has increased the use of single-use medical fabrics such as surgical masks, respirators, and other personal protective equipment (PPE), which have faced worldwide supply chain shortages. Reusable PPE is desirable in light of such shortages; however, the use of reusable PPE is largely restricted by the difficulty of rapid sterilization. In this work, we demonstrate successful bacterial and viral inactivation through remote and rapid radio frequency (RF) heating of conductive textiles. The RF heating behavior of conductive polymer-coated fabrics was measured for several different fabrics and coating compositions. Next, to determine the robustness and repeatability of this heating response, we investigated the textile's RF heating response after multiple detergent washes. Finally, we show a rapid reduction of bacteria and virus by RF heating our conductive fabric. 99.9% of methicillin-resistant Staphylococcus aureus (MRSA) was removed from our conductive fabrics after only 10 min of RF heating; human cytomegalovirus (HCMV) was completely sterilized after 5 min of RF heating. These results demonstrate that RF heating conductive polymer-coated fabrics offer new opportunities for applications of conductive textiles in the medical and/or electronic fields.

Racial and socioeconomic status differences in stress, posttraumatic growth, and mental health in an older adult cohort during the COVID-19 pandemic.

Background: The COVID-19 pandemic has disproportionately impacted the most vulnerable and widened the health disparity gap in both physical and mental well-being. Consequentially, it is vital to understand how to best support elderly individuals, particularly Black Americans and people of low socioeconomic status, in navigating stressful situations during the COVID-19 pandemic and beyond. The aim of this study was to investigate perceived levels of stress, posttraumatic growth, coping strategies, socioeconomic status, and mental health between Black and non-Hispanic, White older adults, the majority over the age of 70. Additionally, we investigated which variables, if any, were associated with posttraumatic growth in these populations. Methods: One hundred seventy-six community dwelling older adults (mean age = 76.30 ±8.94), part of two observational studies (The Harvard Aging Brain Study and Instrumental Activities of Daily Living Study) in Massachusetts, US, were included in this cross-sectional study. The survey, conducted from March 23, 2021 to May 13, 2021, measured perceived stress, behavioral coping strategies, posttraumatic growth, and mental health during the COVID-19 pandemic. We investigated associations with post-traumatic growth in a multiple linear regression model and examined their differences by race with t-tests, Wilcoxon rank-sum tests, and Fisher's exact tests. A second multiple linear regression model was used to examine which coping strategies were associated with posttraumatic growth. Findings: Our results indicated no significant difference between the groups in terms of mental health or stress. However, Black participants showed significantly greater posttraumatic growth compared to non-Hispanic, White participants. Additionally, the coping strategies of religion and positive reframing were found to be significantly associated with posttraumatic growth. Furthermore, even with the effects of stress and coping strategies controlled for, race remained significantly associated with posttraumatic growth. Interpretation: The COVID-19 pandemic has differentially impacted Black and non-Hispanic White older adults. These results may help encourage further analysis on geriatric psychiatry as well as understanding how cultural values and adaptations impact posttraumatic growth and mental health in diverse populations. Funding: The Harvard Aging Brain Study (HABS) has been funded by NIH-NIA P01 AG036694 (PI: Reisa Sperling). The IADL study is funded by the National Institute on Aging (R01 AG053184, PI: Gad A. Marshall).

Prenatal and postpartum maternal mental health and neonatal motor outcomes during the COVID-19 pandemic.

Background: Rates of prenatal and postpartum stress and depression in pregnant individuals have increased during the COVID-19 pandemic. Perinatal maternal mental health has been linked to worse motor development in offspring, with motor deficits appearing in infancy and early childhood. We aimed to evaluate the relationship between prenatal and postpartum stress and depression and motor outcome in infants born during the COVID-19 pandemic. Methods: One hundred and seventeen participants completed an online prospective survey study at two timepoints: during pregnancy and within 2 months postpartum. Depression was self-reported using the Edinburgh Perinatal/Postpartum Depression Scale (EPDS), and stress via the Perceived Stress Scale (PSS). Mothers reported total infant motor ability (fine and gross) using the interRAI 0-3 Developmental Domains questionnaire. Results: Prenatal (EPDS median=10.0, interquartile range[IQR]=6.0 - 14.0, B=-0.035, 95%CI=-0.062 to -0.007, p = 0.014) and postpartum maternal depression outcomes (median=7, IQR=4-12, B=-0.037, 95%CI= -0.066 to -0.008, p = 0.012) were significantlynegatively associated with total infant motor ability. Neither pregnancy nor postpartum perceived stress was associated with infant motor function. A cluster analysis revealed that preterm and low-birth weight infants whose mothers reported elevated depressive symptoms during pregnancy and in the postpartum period had the poorest motor outcomes. Conclusions: Prenatal and postpartum depression, but not stress, was associated with early infant motor abilities. Preterm and low-birth weight infants whose mothers reported elevated depressive symptoms maybe at-risk of experiencing poor motor outcomes. These results highlight the importance of identifying pre- and postnatal maternal mental health issues, especially during the ongoing COVID-19 pandemic.

Safety Risks of Primary and Secondary Schools in China: A Systematic Analysis Using AHP–EWM Method

Owing to the frequent accidents in primary and secondary schools (PSS) in China in the past decades, a systematic analysis of indicators influencing safety risks in PSS is critical to identifying preventive measures. A two-hierarchy structure of indicators was identified by analyzing various cases, intensive interviews, and related previous literature. A combination of the analytic hierarchy process and the entropy weight method was developed to synthetically assess the primary and secondary risk indicators through a case study of Ma Shan School in China. The results are as follows: (1) the primary risk indicators, namely, natural disasters, public health, facility safety, accidental injury, public security, school bullying, and individual health constitute the evaluation framework of the safety risks in PSS. (2) Public health risks and accidental injury risks are the most critical factors that should be prioritized. In addition to providing academic implications, several managerial implications are proposed for these stakeholders to reduce the safety risks in PSS.

Nexus of E-government, cybersecurity and corruption on public service (PSS) sustainability in Asian economies using fixed-effect and random forest algorithm

Purpose>E-government development (EGD) is vital in enhancing the institutional quality and sustainable public service (SPS) delivery by eradicating corruption and cybersecurity crimes.Design/methodology/approach>The present study applied econometric fixed-effect (FE) regression analysis and random forest (RF) algorithm through machine learning for comprehensive estimations in achieving SPS. This study gauges the nexus between the EGD as an independent variable and public service sustainability (PSS) as a proxy of public health services as a dependent variable in the presence of two moderators, corruption and cybersecurity indices from 47 Asian countries economies from 2015 to 2019.Findings>The computational estimation and econometric findings show that EGD quality has improved with time in Asia and substantially promoted PSS. It further explores that exercising corruption control measures and introducing sound cybersecurity initiatives enhance PSS's quality and support the EDG effect much better.Practical implications>The study concludes that E-Government has positively impacted PSS (healthcare) in Asia while controlling cybersecurity and institutional malfunctioning made an E-Government system healthier and SPS development in Asia.Originality/value>This study added a novel contribution to existing E-Government and public services literature by comprehensively applied FE regression and RF algorithm analysis. Moreover, E-Government and cybersecurity improvement also has taken under consideration for PSS in Asian economies.

Internet Addiction, Symptoms of Anxiety, Depressive Symptoms, Stress Among Higher Education Students During the COVID-19 Pandemic.

Poor mental health is a growing concern among young people during the coronavirus disease 2019 (COVID-19) pandemic. The aim of this study was to assess the associations of Internet addiction with depressive symptoms, anxiety symptoms, and stress in higher education students during the COVID-19 pandemic, as well as to examine these mental health problems in the context of study-related characteristics. The research sample consisted of 3,099 participants from the Czech Republic (CZ: 1,422) and Slovak Republic (SK: 1,677). The Internet Addiction Test (IAT), the Generalized Anxiety Disorder (GAD-7) scale, the Patient Health Questionnaire for depressive symptoms (PHQ-9), and the Perceived Stress Scale (PSS) were used to measure mental health problems. The analyses also included demographic data (gender and age) and study-related characteristics (form of study, degree of study, field of study, distance between college and home, and housing during the semester). Based on the results of frequency and descriptive analyses, the prevalence of mental health problems was high. The most serious levels of Internet addiction (IAT cut-off point ≥ 50), to which attention should be paid, were found in 3.5% of Czech and 6.2% of Slovak students. Using the standard cut-off point of GAD-7 ≥ 10, 14.1% of Czech and 11.6% of Slovak students were identified with anxiety symptoms. Regarding the PHQ-9 with the cut-off point ≥ 10, 23.4% of Czech and 19.1% of Slovak students had depressive symptoms, which should be addressed. Using the PSS cut-off point ≥ 27, 12.9% of Czech students and 9.1% of Slovak students perceived high stress. The quantile regression analysis showed that Internet addiction was positively associated with anxiety symptoms, depressive symptoms, and stress in all of the analyzed cases (p-value < 0.001). In terms of study-related characteristics, the binomial logistic regression analysis revealed that risk factors for mental health problems in Czech and Slovak students were mainly full-time form of study and living away from home during the semester. Internet addiction, anxiety symptoms, depressive symptoms, and stress are issues that require increased attention, and professionals and policy-makers should implement interventions to effectively prevent and help students with psychological problems.

An Investigation into the Pressures Experienced by Medical Masters Students during the COVID-19 Pandemic Based on the Perceived Stress Scale-14 and Its Alleviation Methods.

The COVID-19 pandemic can be seen as a traumatic event during which time medical students have been required to perform dual roles both as students and as medical workers. In this study, we aimed to use the Perceived Stress Scale (PSS-14) to judge the pressures on medical students and to identify effective ways to relieve these pressures. In this cross-sectional study, the subjects were recruited under informed consent according to the Declaration of Helsinki. Students undertaking Masters degrees at the China-Japan Union Hospital of Jilin University were randomly selected and data were collected through questionnaire surveys. Our data showed significant differences in the levels of pressure experienced by Masters students (p < 0.05). In the student population that showed increased pressure, females were significantly more stressed than males (p < 0.05). In addition, the pressures persisted after a holiday period (p < 0.05) but were reduced by undertaking recreational activities. The psychological pressures resulting from the COVID-19 pandemic were higher in female medical students compared to males. We showed that recreational activities including chatting with friends reduced psychological pressures in female medical students.

Effect of Mindfulness-Based Stress Reduction on the Well-Being, Burnout and Stress of Italian Healthcare Professionals during the COVID-19 Pandemic.

COVID-19 has overwhelmed healthcare systems and increased workload and distress in healthcare professionals (HCPs). The objective of this study was to evaluate baseline distress before and after the pandemic, and the effect of Mindfulness-Based Stress Reduction (MBSR) training on well-being (PGWBI), stress (PSS) and burnout (MBI) in Italian HCPs. Moreover, the "fear of COVID-19" (FCV-19S) questionnaire was administered to HCPs participating in the post-emergency MBSR program. Baseline distress results were moderate in all groups. No differences between baseline distress were observed between the groups of HCPs beginning the MBSR courses in the pre or post pandemic period. Total PGWBI lowered with aging. Additionally, FCV-19S positively correlated with age. MBSR was able to lower distress levels, except for depersonalization, which increased, while emotional exhaustion decreased in the group enrolled in the last post-pandemic MBSR course. Levels of fear of COVID-19 in HCPs significantly decreased after MBSR training. The lack of change in baseline distress over time indicates that it is more influenced by work-related distress than by the pandemic in our HCPs. In view of its beneficial effects on psycho-emotional status, MBSR training may represent an effective strategy to reduce distress in emergency periods as well as an essential part of HCPs' general training.

Interdigitated Organic Sensor in Multimodal Facemask's Barrier Integrity and Wearer's Respiration Monitoring.

Facemasks are used as a personal protective equipment in medical services. They became compulsory during the recent COVID-19 pandemic at large. Their barrier effectiveness during various daily activities over time has been the subject of much debate. We propose the fabrication of an organic sensor to monitor the integrity of surgical masks to ensure individuals' health and safety during their use. Inkjet printing of an interdigitated conducting polymer-based sensor on the inner layer of the mask proved to be an efficient and direct fabrication process to rapidly reach the end user. The sensor's integration happens without hampering the mask functionality and preserving its original air permeability. Its resistive response to humidity accumulation allows it to monitor the mask's wetting in use, providing a quantified way to track its barrier integrity and assist in its management. Additionally, it detects the user's respiration rate as a capacitive response to the exhaled humidity, essential in identifying breathing difficulties or a sign of an infection. Respiration evaluations during daily activities show outstanding performance in relation to unspecific motion artifacts and breathing resolution. This e-mask yields an integrated solution for home-based individual monitoring and an advanced protective equipment for healthcare professionals.

Impact of regional transport on total OX (NO2+ O3) concentrations observed at a tropical rural location

In general, local emissions and long-range transport will dictate the pollution levels over a given place. The former source will be based on the location whether it is urban/rural but there are no boundaries to the latter source. During most of the time in a year, long-range transport will decide the pollution levels. Here we present the experimental evidence for regional (long-range) transport impacts on the total OX (NO2 + O3) concentration at a tropical rural location. Two major independent events of the year 2020 in India, the COVID-19 lockdown and Deep depression in Bay of Bengal (BoB2) have been used to demonstrate the known fact of mixing of aged and freshly emitted ozone precursors on the total OX concentration and their influence on observed total OX. COVID-19 lockdown event happened in the summer season whereas the BoB2 event happened during the post-monsoon period. Air mass transport during events at the observational site is completely different which brings the regional transport influence. Further, total OX observed has no local contribution and is controlled entirely by the regional contribution. These observations have been well supported by the CWT analysis and wind circulation patterns during the events. This study provides a clear demonstration of the regional pollution transport influence on the total OX at a rural environment (which control the oxidative capacity of the rural atmosphere). Thus, caution is advised in designating the location as rural/urban based on local emissions alone.

Virus blocking textile for SARS-CoV-2 using human body triboelectric energy harvesting.

Effective mitigation technology to prevent the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is required before achieving population immunity through vaccines. Here we demonstrate a virus-blocking textile (VBT) that repulses SARS-CoV-2 by applying repulsive Coulomb force to respiratory particles, powered by human body triboelectric energy harvesting. We show that SARS-CoV-2 has negative charges, and a human body generates high output current of which peak-to-peak value reaches 259.6 µA at most, based on triboelectric effect. Thereby, the human body can sustainably power a VBT to have negative electrical potential, and the VBT highly blocks SARS-CoV-2 by repulsion. In an acrylic chamber study, we found that the VBT blocks SARS-CoV-2 by 99.95%, and SARS-CoV-2 in the VBT is 13-fold reduced. Our work provides technology that may prevent the spread of virus based on repulsive Coulomb force and triboelectric energy harvesting.

Paradigm shift in pattern and prevalence of poisoning during COVID-19 pandemic.

Objective: To assess the pattern, prevalence and outcome of poisoning cases reporting to hospital in North India during COVID-19 pandemic. Material and Methods: An observational, prospective study was conducted for 100 patients reporting to medical emergency with history of poisoning intake from April 2020 to January 2021. Age range was 14-85 years. Obtained data were analysed using descriptive statistics and results were expressed as percentage and mean. Results: Out of 100 patients (77M, 33F), mean age of 32.6 years, most cases belong to age group of 20-30 years and 50% were matriculates and majority of the patients belonged to Punjab and Himachal Pradesh. The most common poisoning agents consumed were corrosives (34%) followed by Aluminium Phosphide (24%). Respiratory distress (53%), loss of consciousness (43%), acute kidney injury (36%) were the common clinical presentations. PSS (Poisoning Severity Score) was moderate in 52% of patients, severe in 14%, fatal in 16% and minor PSS in 18% of patients. 16 patients with fatal PSS and 16 patients with moderate to severe PSS got expired. High mortality of 33% was seen in our study. Conclusions: The most vulnerable group in our study was of young males in age group of 21-30 years and less educated, who had lost their jobs due to COVID-19 pandemic lockdown. Corrosives were the most commonly consumed poison during lockdown. Our study found that scoring systems PSS and GCS were good assessment tools for degree of severity of poisoning at an early stage.