bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of Probiotic Almond Beverage Using Lacticaseibacillus rhamnosus GR-1 Fortified with Short-Chain and Long-Chain Inulin Fibre
Authors: Muncey Lauren , Hekmat Sharareh
Published: June 2021

Plant-based beverages are growing in popularity due to the rise of vegetarianism and other health trends. A probiotic almond beverage that combines the properties of almonds, inulin, and Lacticaseibacillusrhamnosus GR-1 may meet the demand for a non-dairy health-promoting food. The purpose of this study was to investigate the viability of L. rhamnosus GR-1 and pH in five fermented almond beverage samples, supplemented with either 2% or 5% (w/v) short-chain or long-chain inulin over 9 h of fermentation and 30 days of refrigerated storage. All almond beverage samples achieved a mean viable count of at least 107 CFU/mL during 9h of fermentation and 30 days of refrigerated storage. The probiotic almond beverage supplemented with 2% (w/v) short-chain inulin had a significantly higher mean microbial count (p = 0.048) and lower pH (p < 0.001) throughout fermentation, while the control and the long-chain inulin treatments had the lowest viable counts and acidity, respectively. This study shows that the addition of short-chain and long-chain inulin had no adverse effects on the viability of L. rhamnosus GR-1. Therefore, the probiotic almond beverage has the potential to be a valid alternative to dairy-based probiotic products.
Bee Pollen Diet Alters the Bacterial Flora and Antimicrobial Peptides in the Oral Cavities of Mice
Authors: Khurelchuluun Ariuntsetseg , Uehara Osamu , Paudel Durga , Morikawa Tetsuro , Kawano Yutaka , Sakata Mashu , Shibata Hiroshi , Yoshida Koki , Sato Jun , Miura Hiroko , Nagayasu Hiroki , Abiko Yoshihiro
Published: June 2021

Background: Bee pollen (BP) has a broad range of beneficial effects on health. The aim of this study was to examine the effect of BP on the oral environment, including the microbiome and antimicrobial peptides. Methods: C57BL/6J mice were randomly divided into two groups: control and BP. The BP group was fed with a 5% BP diet for 1 month. Swabs from the oral and buccal mucosa and samples of the intestinal stool were collected. Genomic DNA was extracted and the microbiome was analyzed via 16S rRNA sequencing. Results: BP inhibited the growth of P. gingivalis at a concentration of >2.5%. The metagenomic study showed that the abundance of genus Lactococcus was significantly elevated in the oral and intestinal microbiomes of the BP group when compared to those of the control group. Significant alterations in alpha and beta diversity were observed between the oral microbiomes of the two groups. The mRNA levels of beta-defensin-2 and -3 were significantly upregulated in the buccal mucosa of the BP group. Conclusion: A BP diet may have a beneficial effect on oral and systemic health by modulating the bacterial flora and antimicrobial peptides of the oral cavity. Further investigations are needed to clarify how a BP diet affects overall human health.
Saccharina latissima Cultivated in Northern Norway: Reduction of Potentially Toxic Elements during Processing in Relation to Cultivation Depth
Authors: Jordbrekk Blikra Marthe , Wang Xinxin , James Philip , Skipnes Dagbjørn
Published: June 2021

There is an increasing interest in the use of Saccharina latissima (sugar kelp) as food, but the high iodine content in raw sugar kelp limits the daily recommended intake to relatively low levels. Processing strategies for iodine reduction are therefore needed. Boiling may reduce the iodine content effectively, but not predictably, since reductions from 38–94% have been reported. Thus, more information on which factors affect the reduction of iodine are needed. In this paper, sugar kelp cultivated at different depths were rinsed and boiled, to assess the effect of cultivation depth on the removal efficacy of potentially toxic elements (PTEs), especially iodine, cadmium, and arsenic, during processing. Raw kelp cultivated at 9 m contained significantly more iodine than kelp cultivated at 1 m, but the difference disappeared after processing. Furthermore, the content of cadmium and arsenic was not significantly affected by cultivation depth. The average reduction during rinsing and boiling was 85% for iodine and 43% for arsenic, but no significant amount of cadmium, lead, or mercury was removed. Cultivation depths determined the relative effect of processing on the iodine content, with a higher reduction for kelp cultivated at 9 m (87%) compared to 1 m (82%). When not taken into consideration, cultivation depth could mask small reductions in iodine content during rinsing or washing. Furthermore, since the final content of PTEs was not dependent on the cultivation depth, the type and extent of processing determines whether cultivation depth should be considered as a factor in cultivation infrastructure design and implementation, or alternatively, in product segmentation.
Effects of Storage Conditions on the Flavor Stability of Fried Pepper (Zanthoxylum bungeanum) Oil
Authors: Sun Jie , Sun Baoguo , Ren Fazheng , Chen Haitao , Zhang Ning , Zhang Yuyu , Zhang Huiying
Published: June 2021

Flavor stability of fried pepper oil was investigated during 30 days of storage. Variation trends of key volatile flavor compounds in fried pepper oil induced by ultraviolet (UV) irradiation and oxygen (O2) exposure were compared using GC-MS and chiral GC-MS analysis. Chirality analysis showed that conversion of (S)-(-)-limonene to (R)-(+)-limonene form was observed during storage. The storage conditions did not change the configuration of linalool, linalool oxide, or carvone. Quantitative analysis showed that the concentrations of linalool, limonene, 1,8-cineole, β-myrcene, and β-ocimene decreased dramatically during storage, whereas carvone, (E)-2-heptenal, and linalool oxide showed an increasing trend during storage. The loss rate of limonene and linalool exhibited the highest under combined UV and O2 condition, which played an important role for the aroma attenuation of pepper oil. This result will benefit the storage of pepper oil and based on pepper oil aromatic products.
SLC6A3 (DAT1) as a Novel Candidate Biomarker Gene for Suicidal Behavior
Authors: Rafikova Ekaterina , Shadrina Maria , Slominsky Peter , Guekht Alla , Ryskov Alexey , Shibalev Dmitry , Vasilyev Vasiliy
Published: June 2021

It has been previously shown that the serotonin and dopamine neurotransmitter systems might influence the predisposition to suicidal behavior. This study aims to estimate the contribution of 11 polymorphisms in the genes SLC6A4 (5HTT), HTR1A, HTR2A, HTR1B, SLC6A3 (DAT1), DRD4, DRD2, COMT, and BDNF to suicidal behavior and severity of symptoms of depression and anxiety in the Russian population. The study was performed on 100 patients with repeated suicide attempts and 154 controls. We first found an association between SLC6A3 (DAT1) 40 bp VNTR locus and suicidal behavior. This association was significant; when using the codominant (p = 0.006), dominant (p = 0.001), overdominant (p = 0.004), and log-additive (p = 0.004) models, LL genotype played a protective role (OR = 0.48, 0.29–0.82, p = 0.005). Difference in the distribution of COMT rs4680 genotypes was significant in the codominant (p = 0.04), dominant (p = 0.013), and log-additive (p = 0.02) models, and AA genotype might protect against suicide (OR = 0.49, 0.26–0.91, p = 0.025). SLC6A4 5-HTTLPR + rs25531 locus was significant in the recessive model (p = 0.024), and also affected the severity of symptoms of depression (p = 0.044) and personal anxiety (p = 0.029). Our results suggest that allelic variants of SLC6A3, COMT, and SLC6A4 genes might be considered as risk factors for suicidal attempts.
Improved Models of Coalescence Ages of Y-DNA Haplogroups
Authors: McDonald Iain
Published: June 2021

Databases of commercial DNA-testing companies now contain more customers with sequenced DNA than any completed academic study, leading to growing interest from academic and forensic entities. An important result for both these entities and the test takers themselves is how closely two individuals are related in time, as calculated through one or more molecular clocks. For Y-DNA, existing interpretations of these clocks are insufficiently accurate to usefully measure relatedness in historic times. In this article, I update the methods used to calculate coalescence ages (times to most-recent common ancestor, or TMRCAs) using a new, probabilistic statistical model that includes Y-SNP, Y-STR and ancilliary historical data, and provide examples of its use.
Image Registration of 18F-FDG PET/CT Using the MotionFree Algorithm and CT Protocols through Phantom Study and Clinical Evaluation
Authors: Kim Deok-Hwan , Yoo Eun-Hye , Hong Ui-Seong , Kim Jun-Hyeok , Ko Young-Heon , Moon Seung-Cheol , Cheon Miju , Yoo Jang
Published: June 2021

We evaluated the benefits of the MotionFree algorithm through phantom and patient studies. The various sizes of phantom and vacuum vials were linked to RPM moving with or without MotionFree application. A total of 600 patients were divided into six groups by breathing protocols and CT scanning time. Breathing protocols were applied as follows: (a) patients who underwent scanning without any breathing instructions; (b) patients who were instructed to hold their breath after expiration during CT scan; and (c) patients who were instructed to breathe naturally. The length of PET/CT misregistration was measured and we defined the misregistration when it exceeded 10 mm. In the phantom tests, the images produced by the MotionFree algorithm were observed to have excellent agreement with static images. There were significant differences in PET/CT misregistration according to CT scanning time and each breathing protocol. When applying the type (c) protocol, decreasing the CT scanning time significantly reduced the frequency and length of misregistrations (p < 0.05). The MotionFree application is able to correct respiratory motion artifacts and to accurately quantify lesions. The shorter time of CT scan can reduce the frequency, and the natural breathing protocol also decreases the lengths of misregistrations.
First Case of Acute Poisoning with Amiodarone and Flecainide in Attempted Suicide Successfully Managed with Lipid Emulsion Therapy in the Emergency Department: Case Report and Literature Review
Authors: Bologa Cristina , Lionte Catalina , Popescu Alexandra , Sorodoc Victorita , Sorodoc Laurentiu
Published: June 2021

Acute antiarrhythmics poisoning represents a challenge in the Emergency Department (ED). These patients often develop malignant arrhythmias in need of exceptional therapeutic measures in the ICU. We report a 47-year-old patient admitted to the ED 5 h after the ingestion of a large dose of amiodarone and flecainide in a suicide attempt. During their ED stay, the patient developed signs of cardiotoxicity evidenced by electrocardiogram and ventricular arrhythmias. The toxicological results showed a level of 4.8 mg/L amiodarone and 2.98 mg/L flecainide. He was successfully treated in the ED using a large dose of sodium bicarbonate and lipid emulsion therapy. After hospital admission, he remained stable, with no need for exceptional therapeutic measures such as mechanical circulatory support, cardiac pacing or ECMO. We emphasize the importance of an early start of pharmacological therapies in the ED, which might improve the outcome in antiarrhythmic acute poisoning.
What Racism Has to Do with It: Understanding and Reducing Sexually Transmitted Diseases in Youth of Color
Authors: Boutrin Marie-Claire , Williams David R.
Published: June 2021

Sexually transmitted diseases (STDs) are high in populations of color compared to Whites. High-risk sexual behaviors are widely viewed as the key contributors to the levels of STDs, especially in adolescents and young adults. This article situates the sexual risk behaviors of Black, Indigenous, and other young people of color within the framework of racism. It begins with an overview of racial inequities in common STDs and shows how racism gives rise to several risk factors for high-risk sexual behaviors. These risk factors for STDs identified in prior research are best understood as adaptations to the challenges and constraints faced by youth in socially disadvantaged environments. Both social adversity and the mental health problems that it triggers can lead to risky sexual behaviors. Drawing on findings from prior research with youth of color, this paper describes the needed interventions that can markedly reduce STDs and their risk factors. It also describes needed research on interventions that could contribute to the knowledge and understanding of the adverse conditions fueled by racism that affect youth of color, their health, and their communities.
Multiple Gestations and Assisted Reproductive Technologies: Qualitative Study of the Discourse of Health Professionals in Spain
Authors: Jurado-García Estefanía , Botello-Hermosa Alicia , Fernández-Carrasco Francisco Javier , Gómez-Salgado Juan , Navas-Rojano Nazaret , Casado-Mejía Rosa
Published: June 2021

Multiple gestations have become an increasing phenomenon that has impacted public health globally, largely due to the application of assisted reproductive technologies. The objective of this work was to find out the discourse that the health professionals involved in its follow-up have in our context. For this, a qualitative methodology was chosen, with semi-structured interviews recorded in audio, prior authorisation, and transcribed verbatim. It was based on a script designed for this purpose, with the following analysis categories: the current trend of multiple gestations, impact, and follow-up. The content analysis was based on the experiences, knowledge, and perceptions of the professionals interviewed. Professionals stated that the current socioeconomic and legal context hinders a single embryo transfer policy that decreases multiple gestation rates. They emphasised the importance of the psychic impact of such gestations on the couple, on the mother in particular, as well as the economic effect on families, health, and society in general. They expressed the need to create specific protocols to assist these gestations. Midwives, in particular, demanded that the health administration recognise and support the differentiated care they perform with this type of gestation. Work on specific models is needed to adequately size the impact of multiple gestations, as well as to generate social health policies that lead to co-responsible reconciliation measures that favour women having one pregnancy at a time.
Damage to the Testicular Structure of Rats by Acute Oral Exposure of Cadmium
Authors: Iqbal Tariq , Cao Maosheng , Zhao Zijiao , Zhao Yun , Chen Lu , Chen Tong , Li Chunjin , Zhou Xu
Published: June 2021

Cadmium (Cd) is one of the most important heavy metal toxicants, used throughout the world at the industrial level. It affects humans through environmental and occupational exposure and animals through the environment. The most severe effects of oral exposure to Cd on the male reproductive system, particularly spermatogenesis, have not been discussed. In this study, we observed the damage to the testes and heritable DNA caused by oral exposure to Cd. Adult male Sprague–Dawley rats were divided into four groups: a control group and three groups treated with 5, 10, and 15 mg Cd/kg/day for 17 days by oral gavage. Our results revealed that Cd significantly decreases weight gain in 10 and 15 mg/kg groups, whereas the 5 mg/kg groups showed no difference in weight gain. The histopathology showed adverse structural effects on the rat testis by significantly reducing the thickness of the tunica albuginea, the diameter of the tubular lumen, and the interstitial space among seminiferous tubules and increasing the height of the epithelium and the diameter of the seminiferous tubules in Cd treated groups. Comet assay in epididymal sperms demonstrated a significant difference in the lengths of the head and comet in all the 3 Cd treated groups, indicating damage in heritable DNA, although variations in daily sperm production were not significant. Only a slight decrease in sperm count was reported in Cd-treated groups as compared to the control group, whereas the tail length, percentage of DNA in head, and tail showed no significant difference in control and all the experimental groups. Overall, our findings indicate that Cd toxicity must be controlled using natural sources, such as herbal medicine or bioremediation, with non-edible plants, because it could considerably affect heritable DNA and induce damage to the reproductive system.
Health Care Access Measures and Palliative Care Use by Race/Ethnicity among Metastatic Gynecological Cancer Patients in the United States
Authors: Islam Jessica Y. , Saraiya Veeral , Previs Rebecca A. , Akinyemiju Tomi
Published: June 2021

Palliative care improves quality-of-life and extends survival, however, is underutilized among gynecological cancer patients in the United States (U.S.). Our objective was to evaluate associations between healthcare access (HCA) measures and palliative care utilization among U.S. gynecological cancer patients overall and by race/ethnicity. We used 2004–2016 data from the U.S. National Cancer Database and included patients with metastatic (stage III–IV at-diagnosis) ovarian, cervical, and uterine cancer (n = 176,899). Palliative care was defined as non-curative treatment and could include surgery, radiation, chemotherapy, and pain management, or any combination. HCA measures included insurance type, area-level socioeconomic measures, distance-to-care, and cancer treatment facility type. We evaluated associations of HCA measures with palliative care use overall and by race/ethnicity using multivariable logistic regression. Our population was mostly non-Hispanic White (72%), had ovarian cancer (72%), and 24% survived <6 months. Five percent of metastatic gynecological cancer patients utilized palliative care. Compared to those with private insurance, uninsured patients with ovarian (aOR: 1.80,95% CI: 1.53–2.12), and cervical (aOR: 1.45,95% CI: 1.26–1.67) cancer were more likely to use palliative care. Patients with ovarian (aOR: 0.58,95% CI: 0.48–0.70) or cervical cancer (aOR: 0.74,95% CI: 0.60–0.88) who reside >45 miles from their provider were less likely to utilize palliative care than those within <2 miles. Ovarian cancer patients treated at academic/research programs were less likely to utilize palliative care compared to those treated at community cancer programs (aOR: 0.70, 95%CI: 0.58–0.84). Associations between HCA measures and palliative care utilization were largely consistent across U.S. racial-ethnic groups. Insurance type, cancer treatment facility type, and distance-to-care may influence palliative care use among metastatic gynecological cancer patients in the U.S.
The Co-Evolution of Network Structure and PrEP Adoption among a Large Cohort of PrEP Peer Leaders: Implications for Intervention Evaluation and Community Capacity-Building
Authors: Young Lindsay E. , Schneider John A.
Published: June 2021

Background: Peer leader interventions are effective strategies for promoting prevention behaviors in communities at risk for HIV, yet little is known about their effects on the social and behavioral dynamics of peer leaders themselves. Methods: Using data from PrEP Chicago, an RCT PrEP for prevention intervention for young Black MSM (YBMSM), we apply stochastic actor-based models to longitudinally model the impact of study participation on the online friendship and PrEP adoption dynamics among a network of peer leaders (n = 174) and a network of control group counterparts (n = 166). Results: Peer leaders assigned to the same leadership training workshop were more likely to form new Facebook friendships with one another, whereas control participants assigned to the same attention control workshop were no more or less likely to form new friendships. Further, peer leaders with greater PrEP intentions and those living with HIV were more active in forming new friendships with other peer leaders, effects not found in the control network. PrEP adoption was not influenced by network dynamics in either group. Conclusions: The implications of these findings are discussed through the lens of community-capacity building and the role that peer leader interventions and the networks they engage can impact public health.
Integrating Digital Technologies and Public Health to Fight Covid-19 Pandemic: Key Technologies, Applications, Challenges and Outlook of Digital Healthcare
Authors: Wang Qiang , Su Min , Zhang Min , Li Rongrong
Published: June 2021

Integration of digital technologies and public health (or digital healthcare) helps us to fight the Coronavirus Disease 2019 (COVID-19) pandemic, which is the biggest public health crisis humanity has faced since the 1918 Influenza Pandemic. In order to better understand the digital healthcare, this work conducted a systematic and comprehensive review of digital healthcare, with the purpose of helping us combat the COVID-19 pandemic. This paper covers the background information and research overview of digital healthcare, summarizes its applications and challenges in the COVID-19 pandemic, and finally puts forward the prospects of digital healthcare. First, main concepts, key development processes, and common application scenarios of integrating digital technologies and digital healthcare were offered in the part of background information. Second, the bibliometric techniques were used to analyze the research output, geographic distribution, discipline distribution, collaboration network, and hot topics of digital healthcare before and after COVID-19 pandemic. We found that the COVID-19 pandemic has greatly accelerated research on the integration of digital technologies and healthcare. Third, application cases of China, EU and U.S using digital technologies to fight the COVID-19 pandemic were collected and analyzed. Among these digital technologies, big data, artificial intelligence, cloud computing, 5G are most effective weapons to combat the COVID-19 pandemic. Applications cases show that these technologies play an irreplaceable role in controlling the spread of the COVID-19. By comparing the application cases in these three regions, we contend that the key to China’s success in avoiding the second wave of COVID-19 pandemic is to integrate digital technologies and public health on a large scale without hesitation. Fourth, the application challenges of digital technologies in the public health field are summarized. These challenges mainly come from four aspects: data delays, data fragmentation, privacy security, and data security vulnerabilities. Finally, this study provides the future application prospects of digital healthcare. In addition, we also provide policy recommendations for other countries that use digital technology to combat COVID-19.
Association of Livestock Ownership and Household Dietary Quality: Results from a Cross-Sectional Survey from Rural India
Authors: Pradyumna Adithya , Winkler Mirko S. , Utzinger Jürg , Farnham Andrea
Published: June 2021

Studies from India and several eastern African countries found that the impact of dairy animal ownership on household nutrition varied greatly, depending on the socio-geographic context. The purpose of this study was to examine the association between livestock ownership and household dietary quality in rural Kolar district, India. We collected data from a household survey in four study villages (n = all 195 households of the four villages) of Kolar district, applying a cross-sectional design. Kendall’s rank correlation coefficient was employed to determine the correlation between milk consumption and other dietary variables. Multivariable logistic regression was used to describe the relationship between dairy animal ownership and household milk consumption. Households owning dairy animals more often had access to irrigation (58.3% vs. 25.2%) and were less often woman-headed (2.4% vs. 22.5%). Household milk consumption was significantly correlated with consumption of vegetable variety, egg, and meat (all p-values < 0.05). After adjusting for multiple confounders, the odds ratio of milk consumption between dairy animal-owning households as compared to other households was 2.11 (95% confidence interval 0.85, 5.45). While dairy animal ownership was found to be associated with improved dietary quality, larger households were in a better position to adopt dairy animals, which, in turn, might contribute to better household nutrition.
Biological Age in Relation to Somatic, Physiological, and Swimming Kinematic Indices as Predictors of 100 m Front Crawl Performance in Young Female Swimmers
Authors: Sokołowski Kamil , Strzała Marek , Stanula Arkadiusz , Kryst Łukasz , Radecki-Pawlik Artur , Krężałek Piotr , Rosemann Thomas , Knechtle Beat
Published: June 2021

Background: Some swimmers reach high performance level at a relatively young age. The purpose of this study is to determine the relationship between adolescent female swimmers’ 100 m front crawl race (Vtotal100) and several anthropometry, body composition, and physiological and specific strength indices. Methods: Nineteen adolescent female swimmers were examined for biological age (BA) and body composition. Oxygen uptake was measured during water-flume stage-test front crawl swimming with ventilatory thresholds examination. Specific strength indices were assessed during 30 s of tethered swimming. Stroke rate (SR), stroke length (SL), and stroke index (SI) were also examined. Results: BA was strongly correlated with anthropometrics and tethered swimming strength indices, and showed moderate to strong correlation with ventilatory thresholds. Speed of swimming in the race was moderately to largely correlated with speed at V˙O2 max−VV˙O2max (r = 0.47–0.55; p < 0.05)—ventilatory thresholds (VAT, VRCP) (r = 0.50–0.85; p < 0.05), SL (r = 0.58–0.62; p < 0.05), and SI (r = 0.79–0.81; p < 0.01). Conclusion: Results confirmed a significant role of biological maturation mediation on body composition and body size, ventilatory indices, and specific strength indices. BA was not a significant mediation factor influencing the swimming kinematics (SL, SI) and speeds of VAT, VRCP or VV˙O2 max, which were strong predictors of the 100 m race.
Child Farm-Related Injury in Australia: A Review of the Literature
Authors: Adams Jessie , Kennedy Alison , Cotton Jacqueline , Brumby Susan
Published: June 2021

Children on farms have been identified as a population vulnerable to injury. This review seeks to identify child farm-related injury rates in Australia and to determine the key hazards and contributing risk factors. This critical review utilised the PRISMA guidelines for database searching. Research from the year 2000 onward was included as well as earlier seminal texts. Reference lists were searched, and the relevant research material was explored. Our primary focus was on Australian peer-reviewed literature with international and grey literature examples included. Evidence suggests that there is limited Australian research focusing on child farm-related injuries. Child representation in farm-related injuries in Australia has remained consistent over time, and the key hazards causing these injuries have remained the same for over 20 years. The factors contributing to child rates of farm injury described in the literature include child development and exposure to dangerous environments, the risk-taking culture, multi-generational farming families, lack of supervision, child labour and lack of regulation, limited targeted farm safety programs, underuse of safe play areas, financial priorities and poor understanding and operationalisation of the hierarchy of control. It is well known that children experience injury on farms, and the key hazards that cause this have been clearly identified. However, the level of exposure to hazards and the typical attitudes, behaviours and actions of children and their parents around the farm that contribute to chid injury remain unexplored.
Immigration and Gender as Social Determinants of Mental Health during the COVID-19 Outbreak: The Case of US Latina/os
Authors: Gomez-Aguinaga Barbara , Dominguez Melanie Sayuri , Manzano Sylvia
Published: June 2021

While men and women make up a similar number of COVID-19 cases, and are equally likely to know someone who has become ill due to the virus, the gendered and systemic implications of immigration during public health emergencies among minority groups in the United States are empirically underexplored. Using the SOMOS COVID-19 Crisis National Latino Survey, we conduct a series of intersectional analyses to understand the extent to which personal experiences with COVID-19, gendered structural factors, and spillover effects of US immigration policies impact the mental health of US Latina/os during a public health emergency. The results show that among Latinas, knowing an undocumented immigrant and someone ill with COVID-19 increases the probability of reporting worse mental outcomes by 52 percent. Furthermore, being a woman increases the probability of reporting the highest level of mental health problems by 30 percent among Hispanic people who know someone with COVID-19 and an undocumented immigrant. These findings indicate that the effects of the COVID-19 outbreak among US Latinas and Latinos are entrenched in gendered and systemic inequalities.
Time-Variant Positive Air Pressure in Drainage Stacks as a Pathogen Transmission Pathway of COVID-19
Authors: Wong Ling-Tim , Mui Kwok-Wai , Cheng Cheng-Li , Leung Polly Hang-Mei
Published: June 2021

Time-variant positive air pressure in a drainage stack poses a risk of pathogenic virus transmission into a habitable space, however, the excessive risk and its significance have not yet been sufficiently addressed for drainage system designs. This study proposes a novel measure for the probable pathogenic virus transmission risk of a high-rise drainage stack with the occurrence of positive air pressure. The proposed approach is based on time-variant positive air pressures measured in a 38 m high drainage stack of a full-scale experimental tower under steady flow conditions of flow rate 1–4 Ls−1 discharging at a height between 15 m to 33 m above the stack base. The maximum pressure and probabilistic positive air pressures in the discharging stack ventilation section with no water (Zone A of the discharging drainage stack) were determined. It was demonstrated that the positive air pressures were lower in frequency as compared with those in other stack zones and could propagate along the upper 1/3 portion of the ventilation pipe (H’ ≥ 0.63) towards the ventilation opening at the rooftop. As the probabilistic positive pressures at a stack height were found to be related to the water discharging height and flow rate, a risk model of positive air pressure is proposed. Taking the 119th, 124th, 140th and 11,547th COVID-19 cases of an epidemiological investigation in Hong Kong as a baseline of concern, excessive risk of system overuse was evaluated. The results showed that for a 20–80% increase in the frequency of discharge flow rate, the number of floors identified at risk increased from 1 to 9 and 1 to 6 in the 34- and 25-storey residential buildings, respectively. The outcome can apply to facilities planning for self-quarantine arrangements in high-rise buildings where pathogenic virus transmission associated with drainage system overuse is a concern.
Precautionary Behavior Practices and Psychological Characteristics of COVID-19 Patients and Quarantined Persons
Authors: Lee Yubin , Kim Byung-Woo , Kim Shin-Woo , Son Hyunjin , Park Boyoung , Lee Heeyoung , You Myoungsoon , Ki Moran
Published: June 2021

Background: since the coronavirus disease (COVID-19) was first reported in 2019, South Korea has enforced isolation of patients with confirmed cases of COVID-19, as well as quarantine for close contacts of individuals diagnosed with COVID-19 and persons traveling from abroad, in order to contain its spread. Precautionary behavior practices and psychological characteristics of confirmed and quarantined persons were investigated for planning pandemic recovery and preparedness. Methods: this study was conducted with 1716 confirmed patients and quarantined persons in Daegu and Busan, regions where a high number of cases were confirmed during the early stage of the COVID-19 outbreak in South Korea. We collected online survey data from 23 April to 20 May 2020, in Daegu, and 28 April to 27 May 2020, in Busan, in cooperation with Daegu and Busan Infectious Disease Control Centers and public health centers in the regions. COVID-19 symptoms, pre-cautionary behavior practices, psychological states, and the need for improvement in isolation/quarantine environments were examined using an online survey. Results: compared to patients infected with coronavirus, quarantined persons engaged in more hygiene-related behaviors (e.g., hand washing, cough etiquette, and proper mask-wearing) and social distancing. COVID-19 patients had a strong fear of stigma, while quarantined persons had a strong fear of contracting COVID-19. Study participants responded that it was necessary to provide financial support and adequate information during isolation/quarantine. Conclusions: the study highlights the importance of precautionary behavior to prevent COVID-19 infection and the need to provide support (both psychological and financial) to patients and quarantined persons, to reinforce effective communication, social solidarity, and public health emergency preparedness (PHEP) in a pandemic situation.
Impact Model-Based Physical-Activity Promotion at the Workplace: Study Protocol for a Mixed-Methods Study in Germany (KomRueBer Study)
Authors: Schaller Andrea , Hoffmann Carina
Published: June 2021

There is great potential for the implementation of physical-activity measures at the workplace, especially in smaller companies. The present paper describes the study protocol for evaluating an impact-model-based multicomponent intervention promoting physical activity at the workplace within a cross-company network. The evaluation is based on a logic model focusing on outputs and short-term outcomes for the purpose of physical-activity promotion, physical-activity-related health competence, and knowledge about physical activity. A mixed-methods approach is applied. The quantitative evaluation is conducted as a natural design, and combines a retrospective evaluation of the acceptance, usage, and satisfaction (output) at the end of the measures, and two surveys that capture physical activity, knowledge about physical activity, and physical-activity-related health competence (outcome) of the employees in the form of a trend study. The qualitative evaluation comprises semistructured interviews to investigate knowledge of the existence of and attitude towards the content of the multicomponent intervention and the study. The challenges evaluating complex interventions are widely debated. Through an impact-model-based approach, the study will provide a promising framework for the systematic evaluation of a multicomponent intervention promoting physical activity.
Sanitation Infrastructure at the Systemic Edge: Segregated Roma Settlements and Multiple Health Risks in Slovakia
Authors: Filčák Richard , Škobla Daniel
Published: June 2021

This article explores how multiple health risks in municipalities with Roma settlements in Slovakia are related to the varieties of local governance and the authorities’ conduct towards the local Roma population. The first part of the paper describes the situation in Roma settlements from the perspective of unequal access to sewerage and water pipelines. Introduced here are data on identified contagious diseases that correlated multiple health risks with the lack of sanitation and/or water infrastructure. The second section of the paper put forth typologies of government approaches towards the Roma, which based on ethnographic fieldwork, allows us to identify factors of attitudinal, structural and policy-oriented nature. Research results point to a “triad” of key circumstances: these are the structural conditions in municipalities and the history of local inter-ethnic relations and attitude of authorities towards Roma. Finally, possible solutions and approaches regarding how to mitigate the multiple health risks are discussed. It is suggested that on the one hand, in many villages there is a profound institutional discrimination of Roma with respect to water and sanitation infrastructure; on the other hand, water services are increasingly becoming an expensive commodity that not everyone can afford. The article concludes with discussion on enabling conditions and ways to ensure access to basic infrastructure in rural Roma communities. The solution is not only a compliance with principles of non-discrimination and existing technical norms and standards but also in securing the accessible funding for construction of the sanitation infrastructure in a smart way, including innovations and operation of cheaper and environmentally responsible sanitation technologies.
A Bayesian Spatio-Temporal Analysis of Malaria in the Greater Accra Region of Ghana from 2015 to 2019
Authors: Donkor Elorm , Kelly Matthew , Eliason Cecilia , Amotoh Charles , Gray Darren J. , Clements Archie C. A. , Wangdi Kinley
Published: June 2021

The Greater Accra Region is the smallest of the 16 administrative regions in Ghana. It is highly populated and characterized by tropical climatic conditions. Although efforts towards malaria control in Ghana have had positive impacts, malaria remains in the top five diseases reported at healthcare facilities within the Greater Accra Region. To further accelerate progress, analysis of regionally generated data is needed to inform control and management measures at this level. This study aimed to examine the climatic drivers of malaria transmission in the Greater Accra Region and identify inter-district variation in malaria burden. Monthly malaria cases for the Greater Accra Region were obtained from the Ghanaian District Health Information and Management System. Malaria cases were decomposed using seasonal-trend decomposition, based on locally weighted regression to analyze seasonality. A negative binomial regression model with a conditional autoregressive prior structure was used to quantify associations between climatic variables and malaria risk and spatial dependence. Posterior parameters were estimated using Bayesian Markov chain Monte Carlo simulation with Gibbs sampling. A total of 1,105,370 malaria cases were recorded in the region from 2015 to 2019. The overall malaria incidence for the region was approximately 47 per 1000 population. Malaria transmission was highly seasonal with an irregular inter-annual pattern. Monthly malaria case incidence was found to decrease by 2.3% (95% credible interval: 0.7–4.2%) for each 1 °C increase in monthly minimum temperature. Only five districts located in the south-central part of the region had a malaria incidence rate lower than the regional average at >95% probability level. The distribution of malaria cases was heterogeneous, seasonal, and significantly associated with climatic variables. Targeted malaria control and prevention in high-risk districts at the appropriate time points could result in a significant reduction in malaria transmission in the Greater Accra Region.
Can Health-Enhancing Sporting Programs in Sports Clubs Lead to a Settings-Based Approach? An Exploratory Qualitative Study
Authors: Ooms Linda , Kruijsbergen Mette van , Collard Dorine
Published: June 2021

There is limited knowledge about how a settings-based approach can be best applied in a sports club setting. This qualitative exploratory study examined whether and how sporting programs focusing on individual behavior change (i.e., increasing physical activity levels of inactive people) and implemented on the micro-level of the sports club, can be a first step towards a settings-based approach (i.e., inclusion of the meso- and macro-level of the sports club). In addition, this study explored factors that influenced the inclusion of the meso- and macro-level of the sports club. Telephone interviews were conducted with representatives of sixteen sports clubs about program activities on all levels of the sports club. Thematic analyses were performed to explore stimulating and hindering factors. After multiple years, six sports clubs also had program activities on the meso-level and twelve sports clubs had activities on the macro-level. Program activities differed per level within a sports club and on the same level between sports clubs. Cultural and social factors influenced macro-level activities, while predominantly economic factors influenced meso-level activities. Based on these factors, sports clubs could develop, prioritize, and choose strategies that support them in developing a settings-based approach when increasing physical activity levels of inactive citizens.
Are There Differences in Video Gaming and Use of Social Media among Boys and Girls?—A Mixed Methods Approach
Authors: Leonhardt Marja , Overå Stian
Published: June 2021

Gaming is widespread among adolescents and has typically been viewed as an activity for boys. There are however a growing number of female gamers and we need to learn more about how gender affects gaming. The aim of this study is to both quantify gaming among Norwegian adolescents and explore how gender differences are perceived. A mixed method approach was used to capture gaming experiences among boys and girls. Survey data (N = 5607) was analyzed descriptively, and five focus groups were conducted, applying thematic analysis. Statistics showed that boys from the age of 14 use video games up to 5 times more than girls, while girls are much more on social media. From the focus groups, we found that boys did not view social media as socially significant as gaming and that there is a greater social acceptance of gaming among boys than among girls. Gender differences in video gaming are not necessarily a problem per se, as they may reflect gender-specific motivations and interests. However, the study also finds that girls feel less encouraged than boys to play video games due to different gender-related experiences of video gaming. Therefore, gendered barriers in video gaming must be explored in future research.
Wildland Fire Susceptibility Mapping Using Support Vector Regression and Adaptive Neuro-Fuzzy Inference System-Based Whale Optimization Algorithm and Simulated Annealing
Authors: Al-Fugara A’kif , Mabdeh Ali Nouh , Ahmadlou Mohammad , Pourghasemi Hamid Reza , Al-Adamat Rida , Pradhan Biswajeet , Al-Shabeeb Abdel Rahman
Published: June 2021

Fires are one of the most destructive forces in natural ecosystems. This study aims to develop and compare four hybrid models using two well-known machine learning models, support vector regression (SVR) and the adaptive neuro-fuzzy inference system (ANFIS), as well as two meta-heuristic models, the whale optimization algorithm (WOA) and simulated annealing (SA) to map wildland fires in Jerash Province, Jordan. For modeling, 109 fire locations were used along with 14 relevant factors, including elevation, slope, aspect, land use, normalized difference vegetation index (NDVI), rainfall, temperature, wind speed, solar radiation, soil texture, topographic wetness index (TWI), distance to drainage, and population density, as the variables affecting the fire occurrence. The area under the receiver operating characteristic (AUROC) was used to evaluate the accuracy of the models. The findings indicated that SVR-based hybrid models yielded a higher AUROC value (0.965 and 0.949) than the ANFIS-based hybrid models (0.904 and 0.894, respectively). Wildland fire susceptibility maps can play a major role in shaping firefighting tactics.
The Spatiotemporal Interaction Effect of COVID-19 Transmission in the United States
Authors: Liu Lingbo , Hu Tao , Bao Shuming , Wu Hao , Peng Zhenghong , Wang Ru
Published: June 2021

(1) Background: Human mobility between geographic units is an important way in which COVID-19 is spread across regions. Due to the pressure of epidemic control and economic recovery, states in the United States have adopted different policies for mobility limitations. Assessing the impact of these policies on the spatiotemporal interaction of COVID-19 transmission among counties in each state is critical to formulating epidemic policies. (2) Methods: We utilized Moran’s I index and K-means clustering to investigate the time-varying spatial autocorrelation effect of 49 states (excluding the District of Colombia) with daily new cases at the county level from 22 January 2020 to 20 August 2020. Based on the dynamic spatial lag model (SLM) and the SIR model with unreported infection rate (SIRu), the integrated SLM-SIRu model was constructed to estimate the inter-county spatiotemporal interaction coefficient of daily new cases in each state, which was further explored by Pearson correlation test and stepwise OLS regression with socioeconomic factors. (3) Results: The K-means clustering divided the time-varying spatial autocorrelation curves of the 49 states into four types: continuous increasing, fluctuating increasing, weak positive, and weak negative. The Pearson correlation analysis showed that the spatiotemporal interaction coefficients in each state estimated by SLM-SIRu were significantly positively correlated with the variables of median age, population density, and proportions of international immigrants and highly educated population, but negatively correlated with the birth rate. Further stepwise OLS regression retained only three positive correlated variables: poverty rate, population density, and highly educated population proportion. (4) Conclusions: This result suggests that various state policies in the U.S. have imposed different impacts on COVID-19 transmission among counties. All states should provide more protection and support for the low-income population; high-density populated states need to strengthen regional mobility restrictions; and the highly educated population should reduce unnecessary regional movement and strengthen self-protection.
Effects on Brood Development in the Carpenter Ant Camponotus vicinus Mayr after Exposure to the Yeast Associate Schwanniomyces polymorphus Kloecker
Authors: Mankowski Mark E. , Morrell Jeffrey J. , Lebow Patricia K.
Published: June 2021

The yeast Schwanniomyces polymorphus is associated with the infrabuccal pocket in the carpenter ant Camponotus vicinus (Hymenoptera: Formicidae), but its role in ant development is poorly defined. The potential effects of this yeast on brood development were examined on sets of larval groups and workers over a 12 week period. Worker–larval sets were fed variations of a completely artificial, holidic diet and exposed or not exposed to live S. polymorphus. Worker–larval sets in half of the experiment were defaunated using a two-step heat and chemical process. Brood development and number of adult ants produced were significantly affected by the heat/chemical defaunation process. Compared to worker–larval groups fed a basal, complete diet, all treatments resulted in no or deleterious larval development. Brood weights and number of worker ants produced from the original larval sets at initiation were significantly higher in non-defaunated ant groups fed a diet lacking both B vitamins and cholesterol and exposed to live S. polymorphus. We propose that this yeast may help ants to more efficiently assimilate nutrients when fed nutrient-deficient diets, particularly those deficient in sterols.
Selective Arcing Electrostatically Eradicates Rice Weevils in Rice Grains
Authors: Kakutani Koji , Takikawa Yoshihiro , Matsuda Yoshinori
Published: June 2021

We developed an arc discharge exposer (ADE) that kills rice weevils nesting in dried rice. The ADE features multiple identical metal plates, half of these are linked to a voltage generator and the others are grounded. The plates were arrayed in parallel and an electric field formed between them. Any insect entering the field was arced from the negatively charged plate and killed. The ADE was placed on a vessel containing pest-infested rice grains; the insects were lured out of the grains by mechanically vibrating the vessel. When rice grains move, insects tend to climb upward, thus, the weevils were effectively removed. Our electrostatic apparatus is easy to construct and could be used to control pests in stored rice.