bluuebunny/crossref_metadata_2025_split huggingface dataset:
Temperature and magnetic field controlled dielectric relaxation and magnetodielectric response in KBiFe1.9Co0.1O5 polycrystalline
Authors: Chandrakanta Kouru , Jena Rasmita , Singh Anil Kumar 
Published: April 2023

Abstract
Cobalt (Co) substituted brownmillerite KBiFe2O5 (KBiFe1.9Co0.1O5: KBFCO) is synthesized by conventional solid-state reaction route. Rietveld refinement of X-ray diffraction data confirms the pure phase of KBFCO and crystallizes in monoclinic structure with P2/c space group. Surface morphology reveals that the grains are randomly distributed, and the average grain size varies in the range of 1–4 μm. The energy dispersive X-ray spectroscopy confirms that the chemical constituents of KBFCO are very close to the molar (1:1:2) ratio. The temperature (10–300 K) and frequency (500 Hz–1 MHz) dependent dielectric permittivity value decreases approximately 50% in the presence of the magnetic field (1.3 T). It confirms the signature of the magnetodielectric (MD) effect in the KBFCO sample. The magnetic field (±1.3 T) variation MD loop resembles the inverse-butterfly type behavior for the system. Both MD hysteresis and strength decrease with a decrease in temperature. A noticeable suppression in the dielectric relaxation is obtained by applying a 1.3 T magnetic field in the temperature range of 250 K–300 K. The measured MD effect is observed at a high frequency (30 kHz), suggesting the intrinsic effect is dominated in the probing temperature range. Observation of similar trends in magnetic field-dependent MD and magnetic loss (ML) loop rules out the existence of magnetoresistance origin MD effect. These results confirm that KBFCO has an excellent MD response even for a small applied field and holds great interest for future device applications.
Effect of thiosulfate on the passivation of zinc-alloys in 3.5 wt% NaCl solution at 353 K
Authors: Zaw Thwelt Thinzar , Mungsantisuk Pinai , Lothongkum Anchaleeporn Waritswat , Lothongkum Gobboon 
Published: April 2023

Abstract
The effect of thiosulfate (S2O3
2−) with the different concentrations (100 g m−3, 150 g m−3, 200 g m−3) on the passivation of Zn alloys in artificial seawater at 353 K is investigated by using immersion tests, electrochemical measurements, and field emission scanning electron microscopy (FE-SEM) with EDX. It is found that the presence of thiosulfate in the solution can hinder the passivation. Potentiodynamic polarization results show that thiosulfate increases the current density at which the thin passive films with the low corrosion resistance are formed. Thiosulfate effect to retard the passivation, is different with the concentrations exposed to the respective Zn alloys based on the Al content. Due to the presence of various Zn and Al protective compounds at the surface, the passivation of Zn alloys occurs at the immersion time of 432 ks in the form of thin film. After the immersion time is 1037 ks, the passivation is still approximately as close as 432 ks inhibiting the film growth by the effect of thiosulfate and depassivation also would be occurred with the removal of the oxide thin film by the longer immersion time.
Singular optics empowered by engineered optical materials
Authors: Barati Sedeh Hooman , Litchinitser Natalia M. 
Published: April 2023

Abstract
The rapid development of optical technologies, such as optical manipulation, data processing, sensing, microscopy, and communications, necessitates new degrees of freedom to sculpt optical beams in space and time beyond conventionally used spatially homogenous amplitude, phase, and polarization. Structuring light in space and time has been indeed shown to open new opportunities for both applied and fundamental science of light. Rapid progress in nanophotonics has opened up new ways of “engineering” ultra-compact, versatile optical nanostructures, such as optical two-dimensional metasurfaces or three-dimensional metamaterials that facilitate new ways of optical beam shaping and manipulation. Here, we review recent progress in the field of structured light–matter interactions with a focus on all-dielectric nanostructures. First, we introduce the concept of singular optics and then discuss several other families of spatially and temporally structured light beams. Next, we summarize recent progress in the design and optimization of photonic platforms, and then we outline some new phenomena enabled by the synergy of structured light and structured materials. Finally, we outline promising directions for applications of structured light beams and their interactions with engineered nanostructures.
The crystal structure of (E)-N′-(1-(4-fluorophenyl)propylidene)-2-hydroxybenzohydrazide, C16H15FN2O2
Authors: Yang Sha , Men Jing , Tang Wenqiang 
Published: April 2023

Abstract
C16H15FN2O2, monoclinic, P21/c (no. 14), a = 9.2751(7) Å, b = 13.1232(7) Å, c = 11.7155(8) Å, β =

90.011

(
7
)

∘

$90.011{(7)}^{\circ }$

, V = 1426.00(16) Å3, Z = 4,

R

g
t

${R}_{\mathit{g}\mathit{t}}$

(F) = 0.0570,

w

R

r
e
f

$w{R}_{\mathit{r}\mathit{e}\mathit{f}}$

(F
2) = 0.1462, T = 293 K.
A numerical study on the spatial orientation of aligning fibrous particles in composites considering the wall effect
Authors: Lin Jianjun , Zhao Qingxin , Chen Huisu , Xue Caihong , Li Mingqi , Yuan Lili 
Published: April 2023

Abstract
The reinforced efficiency of steel fibers in composites is closely related to their spatial orientation, which can be generally driven by the external magnetic force and restricted by the wall effect of rigid boundaries of the container. To clarify the spatial orientation of steel fibers in composites considering the effect of rigid boundaries under the electromagnetic field, a series of two-phase models consisting of fibrous particles and homogeneous matrix are generated, in which the fibers are separately simplified as spherocylindrical, cylindrical, and linear particles. Based on these models of the semi-periodic boundaries, the effect of fiber characteristics (e.g., the fiber content V
f, fiber aspect ratio ε, fiber length l
sf, and fiber style) on both the spatial distribution and orientation degree of fibrous particles is studied before and after the fibers are aligned by the magnetic force. The results revealed that (1) both the effective number N
A and orientation degree ξ of fibrous particles at a cross-section of the container can be greatly increased when the electromagnetic field is applied and (2) the wall effect of rigid boundaries shows an adverse impact on the amelioration of N
A and ξ, and the range size of the affected region is essentially equal to the effective length of fibrous particles of different shapes (e.g., l
sf + D
sf) for spherocylindrical particles and l
sf for cylindrical and linear particles).
Nanoarchitecture of Eumeninae nest: the compositional mystery unwrapped
Authors: Sankararaman Sankaranarayana Iyer 
Published: April 2023

Abstract
Nanoarchitecture in naturally occurring materials has always fascinated man tempting him to mimic them and explore the mystery behind their unparallel physical, structural, optical, thermal, and pharmacological properties. The paper scientifically validates the unknown composition of the Eumeninae wasp nest (EWN) exhibiting exceptional thermophysical and pharmacological properties. The Eumeninae wasp nest is subjected to various structure, elemental, and morphological characterizations by X-ray diffraction, X-ray photoelectron spectroscopy, inductively coupled plasma mass spectrometry, and field emission scanning electron microscopy. Having understood the nanoarchitecture with the constituent elements, the electrical and thermal behaviour of the sample are also studied. The sample is closely similar to lateritic soil seen at the location where the nest sample is collected. The pharmacological potential of EWN is also unveiled through antibacterial, antifungal, and cytotoxicity studies.
Reducing the Frequency of Pulse Oximetry Alarms at a Children’s Hospital
Authors: Berg Kathleen J. , Johnson David P. , Nyberg Ginny , Claeys Christine , Ausmus Andrew , Wilkinson Emily , Clark Nicholas A. 
Published: April 2023

BACKGROUND AND OBJECTIVES
Alarm fatigue is exacerbated by frequent, nonactionable physiologic monitor alarms. Overutilization of pulse oximetry (SpO2) compounds this alarm burden. Narrow default alarm limits and overutilization of continuous (CSpO2) rather than intermittent monitoring contribute to nonactionable alarms. There were 1.12 million SpO2 alarms on included units during the baseline period, of which 41.0% were for SpO2 ≥ 88%. We aimed to decrease SpO2 alarms per patient day by 20% within 12 months.

METHODS
This quality improvement study included patients admitted January 2019 to June 2022. Intensive care and cardiology units were excluded. Interventions included (1) changing default alarm SpO2 limits on monitors from &lt;90% to &lt;88%, (2) changing SpO2 order default from continuous to intermittent, and (3) adding indication requirements for CSpO2. Outcome measures were total SpO2 alarms and alarms for SpO2 ≥ 88% per patient day. Balancing measures were high acuity transfers and code blues without CSpO2 ordered. Control charts were used for each.

RESULTS
Our study included 120 408 patient days with 2.98 million SpO2 alarms. Total SpO2 alarms and alarms for SpO2 ≥ 88% per patient day decreased by 5.48 (30.57 to 25.09; 17.9%) and 4.48 (12.50 to 8.02; 35.8%), respectively. Special cause improvement was associated with changing default monitor alarm parameters. Balancing measures remained stable.

CONCLUSIONS
SpO2 monitors alarm frequently at our children’s hospital. Widening default alarm limits was associated with decreased SpO2 alarms, particularly nonactionable alarms (≥88%). This high-reliability intervention may be applied, when appropriate, to other monitor alarm parameters to further mitigate alarm burden.
Association of Maternal BMI and Rapid Infant Weight Gain With Childhood Body Size and Composition
Authors: Gilley Stephanie P. , Harrall Kylie K. , Friedman Chloe , Glueck Deborah H. , Cohen Catherine C. , Perng Wei , Sauder Katherine A. , Krebs Nancy F. , Shankar Kartik , Dabelea Dana 
Published: April 2023

OBJECTIVESMaternal prepregnancy BMI (ppBMI) and an infant’s rapid weight gain (RWG) are each associated with increased risk for childhood obesity. We hypothesized that ppBMI and RWG interact to further raise childhood obesity risk.METHODSMother-infant dyads (n = 414) from the Healthy Start Study, an observational prebirth cohort, were included. RWG was defined as a weight-for-age z score increase of ≥0.67 from birth to 3 to 7 months. Body composition was measured by air displacement plethysmography at age 4 to 7 years. General linear regression models were fit to characterize associations between ppBMI, RWG, and their interaction with the outcomes of childhood BMI-for-age z score and percent fat mass (%FM).RESULTSA total of 18.6% (n = 77) of offspring experienced RWG. Maternal ppBMI and RWG were both positively associated with offspring BMI z score and %FM. RWG amplified the association between ppBMI and BMI z score, especially among females. Females exposed to maternal obesity and RWG had an average BMI at the 94th percentile (1.50 increase in childhood BMI z score) compared with those exposed to normal ppBMI and no RWG (average childhood BMI at the 51st percentile). RWG had a weaker effect on the association between ppBMI and %FM. Adjustment for breastfeeding status or childhood daily caloric intake did not significantly alter findings.CONCLUSIONSRapid infant weight gain interacts with maternal ppBMI to jointly exacerbate risk of childhood obesity. Pediatric providers should monitor infants for RWG, especially in the context of maternal obesity, to reduce future risk of obesity.
Sex Differences in Outcome and Prescribing Practice in ST-elevation MI Patients with Multivessel Disease and Incomplete Revascularisation
Authors: Burgess Sonya , Juergens Craig P , Yang Wesley , Shugman Ibrahim M , Idris Hanan , Nguyen Tuan , McLean Alison , Zaman Sarah , Thomas Liza , Robledo Kristy P , Mussap Christian , Lo Sidney , French John 
Published: April 2023

Objective: To investigate the extent to which multivessel disease, incomplete revascularisation and prescribing differences contribute to sex-based outcome disparities in patients with ST-elevation MI (STEMI) and establish whether differences in cardiac death and MI (CDMI) rates persist at long-term follow-up. Methods and results: This observational study evaluates sex-based outcome differences (median follow-up 3.6 years; IQR [2.4–5.4]) in a consecutive cohort of patients (n=2,083) presenting with STEMI undergoing percutaneous coronary intervention). Of the studied patients 20.3% (423/2,083) were women and 38.3% (810/2,083) had multivessel disease (MVD). Incomplete revascularisation was common. The median residual SYNTAX score (rSS) was 5.0 (IQR [0–9]) in women and 5.0 (IQR [1–11]) in men (p=0.369), and in patients with MVD it was 9 (IQR [6–17]) in women and 10 (IQR [6–15]) in men (p=0.838). The primary endpoint CDMI occurred in 20.3% of women (86/423) and in 13.2% of men (219/1,660) (p=0.028). Differences persisted following multivariable risk adjustment: female sex was independently associated with CDMI (aHR 1.33; IQR [1.02–1.74]). Women with MVD had CDMI more often than all other groups (p<0.001 for all). Significant sex-based prescribing differences were evident: women were less likely to receive guideline-recommended potent P2Y12 inhibitors than men (31% versus 43%; p=0.012), and differences were particularly evident in patients with MVD (25% in women versus 45% in men, p=0.011). Conclusion: Sex-based differences in STEMI patient outcome persist at long-term follow-up. Poor outcomes were disproportionately found in women with MVD and those with rSS>8. Observed differences in P2Y12 prescribing practices may contribute to poor outcomes for women with MVD and incomplete revascularisation.
Sample preparative procedure for Pseudomonas aeruginosa observation under scanning electron microscope
Authors: Nguyen Ngoc Hoa Binh , Pham Thi Thuy Vy , Huynh Thuc Quyen , Nguyen Thi Hiep , Nguyen Thi Thu Hoai 
Published: April 2023

Scanning electron microscope (SEM) is a popular tool used for observing bacteria surface and morphology. Using Pseudomonas aeruginosa as a model, this work aimed to show a SEM preparative procedure that is simple and economical but does not result in considerable data loss. This was accomplished via testing fixing ability of 10% formalin versus 2.5% glutaraldehyde, efficiency of air drying versus t-butyl alcohol drying method. Following that, polypropylene, dialysis tubing and agar were also assessed for their ability to serve as a supporting material for cell adhesion in preparing sample for SEM. Consequently, obtained data showed that the procedure using 24-hour 10% formalin fixation and t-butyl alcohol drying preserved well bacterial morphology. With this procedure, little cell or membrane damage was seen while extracellular structures were clearly observed. Furthermore, when this procedure was applied with different types of substrates including polypropylene, dialysis tubing, and agar, it showed that sample fixed on polypropylene maintained well extracellular structures meanwhile sample fixed on agar presented well bacterial morphology. In conclusion, our data suggested that coating samples on polypropylene, followed by 24-hour 10% formalin fixation and t-butyl alcohol drying was appropriate for observing bacteria under SEM.
Isolation and screening antimicrobial activity of actinomycetes from marine organisms samples of the area Khanh Hoa, Vietnam
Authors: Hong Minh Le Thi , Mai Anh Nguyen , Thi Quyen Vu , Thu Huyen Vu Thi , Thi Dao Phi , Thuy Linh Nguyen , Mai Huong Doan Thi , Van Cuong Pham 
Published: April 2023

The marine environmental conditions are particularly different from terrestrial ones; recent studies have showed that marine actinomycetes might produce many novel compounds with good biological activity. The objective of this study is to isolate and screen actinomycetes strains from the marine environment with activity against pathogenic microorganisms. Fifty strains of actinomycetes were isolated from 40 samples including: sediments, sponges, soft corals, echinoderms... collected from Van Phong Bay area of Khanh Hoa province, Vietnam. The strains fermented in A+ medium and fermentation broths were extracted 5 times with ethyl acetate. The extracts were evaporated under reduced pressure to yield crude extracts. Quantitative assay was used to determine MIC (minimum inhibitory concentration) of extract against 7 test strains, including three Gram-negative bacteria (Escherichia coli ATCC25922, Pseudomonas aeruginosa ATCC27853, Salmonella enterica ATCC13076), three Gram-positive bacteria (Enterococcus faecalis ATCC29212, Staphylococcus aureus ATCC25923, Bacillus cereus ATCC 14579), and the yeast Candida albicans ATCC10231. The result of screening showed that: 18/50 strains have shown the antibacterial activities against at least 3 strains of tested microorganisms. In which, strains G650, G654, G657, G666, G675 inhibited three Gram-positive test microorganisms at MIC values from 8 to 64 µg/mL and C. albicans ATCC10231 with MIC values from 2 to 16 µg/mL. In addition, the two strains G657 and G666 had inhibitory effect on P. aeruginosa ATCC27853 và S. enterica ATCC13076 with MIC value 128 µg/mL. Morphological and phylogenetic investigations based on 16S rRNA gene sequences of the selected five strains showed that: strain G650 belonged to species Streptomyces ardesiacus and strain G666 high similarity to the genus Streptomyces; strain G654 showed the highest similarity to the Salinispora arenicola species; strain G657 highest similarity to the Micromonospora aurantiaca; whereas G675 belonged to the Nocardiopsis flavescens species.
SARS-CoV-2 testing and COVID-19–related primary care use among people with citizenship, permanent residency, and temporary immigration status: an analysis of population-based administrative data in British Columbia
Authors: Wiedmeyer Mei-ling , Goldenberg Shira , Peterson Sandra , Wanigaratne Susitha , Machado Stefanie , Tayyar Elmira , Braschel Melissa , Carrillo Ruth , Sierra-Heredia Cecilia , Tuyisenge Germaine , Lavergne M. Ruth 
Published: April 2023

Abstract
Objectives
Having temporary immigration status affords limited rights, workplace protections, and access to services. There is not yet research data on impacts of the COVID-19 pandemic for people with temporary immigration status in Canada.

Methods
We use linked administrative data to describe SARS-CoV-2 testing, positive tests, and COVID-19 primary care service use in British Columbia from January 1, 2020 to July 31, 2021, stratified by immigration status (citizen, permanent resident, temporary resident). We plot the rates of people tested and confirmed positive for COVID-19 by week from April 19, 2020 to July 31, 2021 across immigration groups. We use logistic regression to estimate adjusted odds ratios of a positive SARS-CoV-2 test, access to testing, and primary care among people with temporary status or permanent residency, compared with people who hold citizenship.

Results
A total of 4,146,593 people with citizenship, 914,089 people with permanent residency, and 212,215 people with temporary status were included. Among people with temporary status, 52.1% had “male” administrative sex and 74.4% were ages 20–39, compared with 50.1% and 24.4% respectively among those with citizenship. Of people with temporary status, 4.9% tested positive for SARS-CoV-2 over this period, compared with 4.0% among people with permanent residency and 2.1% among people with citizenship. Adjusted odds of a positive SARS-CoV-2 test among people with temporary status were almost 50% higher (aOR 1.42, 95% CI 1.39, 1.45), despite having half the odds of access to testing (aOR 0.53, 95% CI 0.53, 0.54) and primary care (aOR 0.50, 95% CI 0.49, 0.52).

Conclusion
Interwoven immigration, health, and occupational policies place people with temporary status in circumstances of precarity and higher health risk. Reducing precarity accompanying temporary status, including regularization pathways, and decoupling access to health care from immigration status can address health inequities.
Visual Representations of Emotions on the Basis of International Research Material
Authors: Sławek-Czochra Małgorzata 
Published: April 2023

This study aims to investigate which emotions were most often evoked through art created during the pandemic and what are the new symbols of emotions and themes used in the creative process.
Two research techniques were used in the study: content analysis and Panofsky’s method. The research material consists of 100 illustrations obtained from the internet after entering the keywords ‘art’ and ‘coronavirus’ in Google.
In the analysed material the most common emotion was fear of COVID-19, loneliness, inability to maintain physical closeness, and the rules of social distancing. The most common reactions were: a desire to isolate from the source of infection, trying to hide from the coronavirus, avoiding an infection by covering the mouth and nose with a mask, gloved hands, staying at home in isolation from other people who can spread the disease. The second most common emotion was anger, most often caused by a risk of infection with COVID-19, isolation, government decisions restricting the organization of artistic events, and relocation. The most common behaviour that expressed anger was screaming and aggression, such as hitting or kicking a coronavirus molecule or its manifestations. Sadness was triggered by a fear of COVID-19, spread of the virus, health deterioration, loss of salary and loss of contact with family, loneliness in hospital, and social distancing. The manifestations of sadness in the analysed images could be observed through facial expressions, eyes, and crying. Sadness can also manifest itself through apathy and self-isolation. The least frequent emotion in the analysed research material was joy, which was the result of an improvement in the general health situation in the country, recovery, effectiveness of health care, a new topic in art, and satisfaction with family life. The symptoms of joy were, above all, a smile on the face, kisses, jumping and dancing. Street artists appealed to a wide variety of themes: religious, mythological, popular culture, and new technologies. The analysis of the research material showed that new symbols representing the SARS-CoV-2 pandemic appeared in the social space and culture: the coronavirus molecule (an emotionally universal symbol) and a white or blue surgical mask and latex gloves symbolizing fear.
The study brings some knowledge about new symbols of emotions, the specific content of art during the COVID-19 pandemic, and new research tools to be used.