Humans spend more than 80% of their lives indoors resulting in an increased demand for high indoor air quality (IAQ). At the same time, indoor air tends to be at least twice as polluted as outdoor air, and health threats caused by long-term exposure to indoor air pollution are rising. Few experiments under real-life conditions have demonstrated positive effects of indoor plants on parameters related to IAQ, resulting in improved humidity and temperature, reduced particulate matter concentration and CO2 levels. Indoor living walls allow the presence of many plants—without taking up valuable floor area. This article presents the results of conducted measurements on four do-it-yourself green walls planted with different plant species that are typically used for vertical indoor greenery (golden pothos, Boston fern, spider plant and a combination of plants) in a school setting. Besides the parameters of air humidity and temperature, CO2, mold spore and particulate matter levels, influences on room acoustics were investigated. Based on a custom-developed evaluation matrix, the plants were compared with each other and a reference without plants. The results show that no species led to deterioration of IAQ. Golden pothos had the most substantial effect and delivered improvements in all examined parameters.

Using the strong-field approximation we systematically investigate the selection rules for high-order harmonic generation and the symmetry properties of the angle-resolved photoelectron spectra for various atomic and molecular targets exposed to one-component and two-component laser fields. These include bicircular fields and orthogonally polarized two-color fields. The selection rules are derived directly from the dynamical symmetries of the driving field. Alternatively, we demonstrate that they can be obtained using the conservation of the projection of the total angular momentum on the quantization axis. We discuss how the harmonic spectra of atomic targets depend on the type of the ground state or, for molecular targets, on the pertinent molecular orbital. In addition, we briefly discuss some properties of the high-order harmonic spectra generated by a few-cycle laser field. The symmetry properties of the angle-resolved photoelectron momentum distribution are also determined by the dynamical symmetry of the driving field. We consider the first two terms in a Born series expansion of the T matrix, which describe the direct and the rescattered electrons. Dynamical symmetries involving time translation generate rotational symmetries obeyed by both terms. However, those that involve time reversal generate reflection symmetries that are only observed by the direct electrons. Finally, we explain how the symmetry properties, imposed by the dynamical symmetry of the driving field, are altered for molecular targets.

Aims: This study aimed to investigate whether the place of the survey makes a significant impact on the responses regarding the process of self-medication, as well as the present pharmacists’ engagement in this process in the Sarajevo Canton. Study Design: An anonymous questionnaire-based survey. Place and Duration of Study: One public pharmacy and various public places in the Sarajevo Canton, Bosnia and Herzegovina, for five months, February–June 2019. Methodology: A total of 312 respondents was included. The first group (165 respondents) was surveyed in the pharmacy after buying an over-the-counter (OTC) drug, and the second group (147 respondents) was surveyed outside the pharmacy. Results: Pharmacists instructed 65% of respondents (72.73% in the first group and 57.14% in the second group) on how to take the purchased OTC drug and checked whether 55% of respondents (70.91% in the first group and 38.1% in the second group) bought an appropriate drug for their health problem. Only 25% of respondents (36.36% in the first group and 12.24% in the second group) was informed about the adverse effects, whereas 29% of respondents (41.82% in the first group and 14.97% in the second group) was informed about the potential contraindications or interactions of the purchased OTC drug. The statistical analysis showed a significant relationship between the responses to the questions and the place of the survey about providing information on the adverse effects (P = .03), comorbidities (P = .049), and general information about the purchased OTC drug (P = .04). Conclusion: In the Sarajevo Canton, pharmacists should be more actively involved in the process of self-medication and provide the necessary advice to patients consuming OTC drugs. Further research is needed so general conclusions could be drawn.

The preschool years presents an important opportunity to support children’s social and emotional development. Social and emotional learning (SEL) programs in early childhood education and care (ECEC) have gained an increased interest due to its potential to improve child health and educational outcomes. We aimed to identify existing systematic reviews on universal, curriculum-based SEL interventions in ECEC settings (children aged 0 to 7 years), assess their risk of bias, synthesize the findings and identify knowledge gaps. We undertook a systematic literature search in seven different databases. Reviews of studies without control groups were excluded. Each abstract and full text article was assessed independently, and disagreements were solved in consensus. Relevant reviews were assessed for bias using the ROBIS tool. Of 4912 records identified through database searches, two systematic reviews met the inclusion criteria. Both reviews were assessed as having a high risk of bias. The results were used to summarize existing knowledge and knowledge gaps. In conclusion, SEL interventions in preschool settings must be considered knowledge gaps. There is a need for more high-quality primary studies and further systematic reviews that adhere to strict scientific methods and address the overwhelming heterogeneity in field, in terms of interventions, settings and outcomes.

To the Editor—In a study of neutralizing antibodies for human coronavirus (HCoV) NL63 by Henss et al [1], the severity of coronavirus disease 2019 (COVID-19) appeared to be correlated with low HCoV-NL63 neutralizing activity, and patients with severe COVID-19 had no high-level NL63-neutralizing antibodies. However, some severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)– naive individuals analyzed in that study had high NL63-neutralizing antibodies, so the authors considered it worthwhile to explore the hypothesis that preexisting immunity to NL63 or other common cold coronaviruses might reduce the risk of severe disease. To examine this hypothesis, we tested for the presence of HCoV-NL63 antibodies, using the human antiHCoV-NL63 immunoglobulin G enzyme-linked immunosorbent assay kit produced by Creative Diagnostics. We tested 4 groups: individuals who were negative for SARS-CoV-2 (control group), those who tested negative even though they took care of family members with COVID-19 (high-risk contacts), patients with mild COVID-19, and patients with severe COVID-19. In the control group (negative for SARS-CoV-2), 3 of 42 individuals tested were positive for HCoV-NL63 antibodies. This is consistent with the presumed positivity in the general population. In highrisk contacts (individuals who took care of family members with COVID-19 but did not test positive for SARS-CoV-2), 6 of 8 tested positive for HCoV-NL63 antibodies. In the patients with mild COVID19 (score 1–3; no oxygen needed), 11 of 13 tested positive, while none of the 20 patients with severe COVID-19 (score 4–6; treated with supplemental oxygen) had serum positive for HCoV-NL63 antibodies. The scoring system is slightly modified from the recommendation made by the Clinical Characterisation and Management Working Group of the WHO Research and Development Blueprint Programme. These results strengthen the hypothesis that positive results for HCoV-NL63 antibodies indicate immunity from previous infection with HCoV-NL63, which may both protect individuals from infection with SARS-CoV-2 and protect infected individuals from progression to severe disease. Because the number of individuals in our study was small, we suggest that this finding should be confirmed in larger studies. One possible follow-up study would involve large numbers of individuals at high risk of infection. Notes

Rational design of protein-protein interaction (PPI) inhibitors is challenging. Connecting a general supramolecular protein binder with a specific peptidic ligand provides a novel conceptual approach. Thus, lysine-specific molecular tweezers were conjugated to a peptide-based 14-3-3 ligand and produced a strong PPI inhibitor with 100-fold elevated protein affinity. X-ray crystal structure elucidation of this supramolecular directed assembly provides unique molecular insight into the binding mode and fully aligns with Molecular Dynamics (MD) simulations. This new supramolecular chemical biology concept opens the path to novel chemical tools for studying PPIs.

Background Beneficial associations between plants and microbes are widespread in nature and have been studied extensively in the microbial-dominant environment of the rhizosphere. Such associations are highly advantageous for the organisms involved, benefiting soil microbes by providing them access to plant metabolites, while plant growth and development are enhanced through the promotion of nutrient uptake and/or protection against (a)biotic stresses. While the establishment and maintenance of mutualistic associations have been shown to require genetic and epigenetic reprogramming, as well as an exchange of effector molecules between microbes and plants, whether short RNAs are able to effect such changes is currently unknown. Here, we established an interaction between the model grass species Brachypodium distachyon ( Bd , Pooideae) and the beneficial fungal root endophyte Serendipita indica ( Si , syn. Piriformospora indica , Sebacinales) to elucidate RNA interference-based regulatory changes in gene expression and small (s)RNA profiles that occurred during establishment of a Sebacinalean symbiosis. Results Colonization of Bd roots with Si resulted in higher grain yield, confirming the mutualistic character of this interaction. Resequencing of the Si genome using the Oxford Nanopore technique, followed by de novo assembly yielded in 57 contigs and 9441 predicted genes, including putative members of several families involved in sRNA production. Transcriptome analysis at an early stage of the mutualistic interaction identified 2963 differentially expressed genes (DEG) in Si and 317 in Bd line 21-3. The fungal DEGs were largely associated with carbohydrate metabolism, cell wall degradation, and nutrient uptake, while plant DEGs indicated modulation of (a)biotic stress responses and defense pathways. Additionally, 10% of the upregulated fungal DEGs encode candidate protein effectors, including six DELD proteins typical for Sebacinales. Analysis of the global changes in the sRNA profiles of both associated organisms revealed several putative endogenous plant sRNAs expressed during colonization belonging to known micro (mi)RNA families involved in growth and developmental regulation. Among Bd - and Si -generated sRNAs with putative functions in the interacting organism, we identified transcripts for proteins involved in circadian clock and flowering regulation as well as immunity as potential targets of fungal sRNAs, reflecting the beneficial activity of Si . Conclusions We detected beneficial effects of Si colonization on Bd growth and development, and established a novel plant-mutualist interaction model between these organisms. Together, the changes in gene expression and identification of interaction-induced sRNAs in both organisms support sRNA-based regulation of defense responses and plant development in Bd , as well as nutrient acquisition and cell growth in Si . Our data suggests that a Sebacinalean symbiosis involves reciprocal sRNA targeting of genes during the interaction.

BACKGROUND Piriform aperture is anterior opening of the nasal cavity formed by bones of the viscerocranium and knowledge about differences between genders is important for forensic scientists, anthropologists, orthopedists, neurosurgeons and vascular surgeons. The aim of this study was to examine gender differences of piriform aperture on 3D models of human skulls originating from Bosnian population using the geometric morphometric method. MATERIALS AND METHODS The study was conducted on 211 3D models of human skulls of known gender. 3D models were obtained by laser scanning. We analyzed the gender differences of piriform aperture using geometric morphometrics method. On 3D models we marked four landmarks on piriform aperture in the Landmark editor program, after which we analyzed its gender differences in MorphoJ program. RESULTS The first PCA axis described 40.398% of total variability of piriform aperture. The greatest gender variability was present in the position of the landmark rhinion. Discriminant functional analysis of the shape and size of the piriform aperture allowed the gender determination with 64.03% accuracy for male and 70.83% accuracy for female gender. The size of the piriform aperture showed a statistically significant difference between genders. Discriminant functional analysis of the shape of the piriform aperture without affecting size enabled gender determination with 59.71% accuracy for male and 62.5% accuracy for female. CONCLUSIONS Analysis showed statistically significant differences in the shape and size of piriform aperture between genders. The accuracy for gender determination based on piriform aperture was higher in females.

Background Severe thoracic trauma (TT) has a significant impact on the selection of treatment strategy in patients with polytrauma. Our aim was to assess the impact of severe TT on choosing the optimal surgical procedure to decrease mortality. Material/Methods Overall, 66 patients with polytrauma and significant TT were analyzed. Demographic data, trauma history, admittance imaging, injury details, injury severity scores, conservative treatment, surgical treatment, days of hospital stay, and mortality data were gathered. Frequencies of thoracic surgical procedures and other treatments were collected and compared with those in the literature. Results All patients had Abbreviated Injury Scale (AIS) scores of thorax >3. Injuries to extremities and/or the osseous pelvis accounted for 50% of injuries; 47.0% included the head and/or neck; 45.5% were external injuries; and 27.3% were abdominal injuries or included pelvic organs and/or lumbar spine. Mean prehospital time was 40.3 min. Mean time from trauma occurrence to tertiary treatment was 125 min. Blunt TT (BTT) was recorded in 59 patients (89.4%), and penetrant TT (PTT) was recorded in 7 patients (10.6%). Thoracic drainage, urgent thoracotomy and laparotomy were recorded procedures. The mean Injury Severity Score (ISS) of all patients was 31.17. Nine patients died (13.6%) and had BTT with a mean ISS of 48.44. The Trauma Injury Severity Score for BTT injuries was 77.08% and for PTT, 85.6%. Conclusions Factors that decreased hospital stay and mortality and increased survival included arriving in time after injury, aggressive reanimation/intensive care, and mandatory thoracic surgical procedure combined with laparotomy.