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Piezoelectric actuators (PEAs) are extensively used for scanning and positioning in scanning probe microscopy (SPM) due to their high precision, simple construction, and fast response. However, there are significant challenges for instrument designers due to their nonlinear properties. Nonlinear properties make precise and accurate control difficult in cases where position feedback sensors cannot be employed. However, the performance of PEA-driven scanners can be significantly improved without position feedback sensors if an accurate mathematical model with low computational costs is applied to reduce hysteresis and other nonlinear effects. Various methods have been proposed for modeling PEAs, but most of them have limitations in terms of their accuracy and computational efficiencies. In this research, we propose a variant DenseNet-type neural network (NN) model for modeling PEAs in an AFM scanner where position feedback sensors are not available. To improve the performance of this model, the mapping of the forward and backward directions is carried out separately. The experimental results successfully demonstrate the efficacy of the proposed model by reducing the relative root-mean-square (RMS) error to less than 0.1%.

Abstract This study aims to provide in vitro and in vivo data to support the utilization of antinuclear antibodies (ANAs) as novel tools for the diagnosis and treatment of prostate cancers. The hematological, biochemical, and histological toxicities of ANAs were assessed at the doses of 5 and 50 μg per mouse. Radiolabeling study was then conducted with ANA and 131I using the chloramine T method, and the biodistribution and treatment efficacy were subsequently investigated in a PC3 xenograft model. No changes in clinical behavior or signs of intoxication, necrosis, or malignancy were observed in ANA-treated mice. 131I-ANA was obtained in very high yield and radiochemical purity, at 94.97 ± 0.98% and 98.56 ± 0.29%, respectively. They achieved immunoreactivity fraction of 0.841 ± 0.17% with PC-3 cells. Levels of radiolabeled ANAs were 1.15–10.14 times higher in tumor tissues than in other examined organs at 24 h post-injection. The tumor growth inhibition rates were 28.33 ± 5.01% in PC3 xenografts mice treated with 131I-ANAs compared with controls and a nearly twofold improvement in median survival was observed. These results demonstrate that radioimmunotherapy of radiolabeled natural ANAs may be an effective treatment for prostate tumors.

Abstract Background American foulbrood (AFB) disease caused by Paenibacillus larvae is dangerous, and threatens beekeeping. The eco-friendly treatment method using probiotics is expected to be the prospective method for controlling this pathogen in honey bees. Therefore, this study investigated the bacterial species that have antimicrobial activity against P. larvae. Results Overall, 67 strains of the gut microbiome were isolated and identified in three phyla; the isolates had the following prevalence rates: Firmicutes 41/67 (61.19%), Actinobacteria 24/67 (35.82%), and Proteobacteria 2/67 (2.99%). Antimicrobial properties against P. larvae on agar plates were seen in 20 isolates of the genus Lactobacillus, Firmicutes phylum. Six representative strains from each species (L. apis HSY8_B25, L. panisapium PKH2_L3, L. melliventris HSY3_B5, L. kimbladii AHS3_B36, L. kullabergensis OMG2_B25, and L. mellis OMG2_B33) with the largest inhibition zones on agar plates were selected for in vitro larvae rearing challenges. The results showed that three isolates (L. apis HSY8_B25, L. panisapium PKH2_L3, and L. melliventris HSY3_B5) had the potential to be probiotic candidates with the properties of safety to larvae, inhibition against P. larvae in infected larvae, and high adhesion ability. Conclusions Overall, 20 strains of the genus Lactobacillus with antimicrobial properties against P. larvae were identified in this study. Three representative strains from different species (L. apis HSY8_B25, L. panisapium PKH2_L3, and L. melliventris HSY3_B5) were evaluated to be potential probiotic candidates and were selected for probiotic development for the prevention of AFB. Importantly, the species L. panisapium isolated from larvae was identified with antimicrobial activity for the first time in this study.

The utility of sterically hindered phenols (SHPs) in drug design is based on their chameleonic ability to switch from an antioxidant that can protect healthy tissues to highly cytotoxic species that can target tumor cells. This work explores the biological activity of a family of 45 new hybrid molecules that combine SHPs equipped with an activating phosphonate moiety at the benzylic position with additional urea/thiourea fragments. The target compounds were synthesized by reaction of iso(thio)cyanates with C-arylphosphorylated phenols containing pendant 2,6-diaminopyridine and 1,3-diaminobenzene moieties. The SHP/urea hybrids display cytotoxic activity against a number of tumor lines. Mechanistic studies confirm the paradoxical nature of these substances which combine pronounced antioxidant properties in radical trapping assays with increased reactive oxygen species generation in tumor cells. Moreover, the most cytotoxic compounds inhibited the process of glycolysis in SH-SY5Y cells and caused pronounced dissipation of the mitochondrial membrane of isolated rat liver mitochondria. Molecular docking of the most active compounds identified the activator allosteric center of pyruvate kinase M2 as one of the possible targets. For the most promising compounds, 11b and 17b, this combination of properties results in the ability to induce apoptosis in HuTu 80 cells along the intrinsic mitochondrial pathway. Cyclic voltammetry studies reveal complex redox behavior which can be simplified by addition of a large excess of acid that can protect some of the oxidizable groups by protonations. Interestingly, the re-reduction behavior of the oxidized species shows considerable variations, indicating different degrees of reversibility. Such reversibility (or quasi-reversibility) suggests that the shift of the phenol-quinone equilibrium toward the original phenol at the lower pH may be associated with lower cytotoxicity.

Keita Suzuki,1 Hiromasa Tsujiguchi,1– 3 Sakae Miyagi,3,4 Thao Thi Thu Nguyen,2 Akinori Hara,1– 3 Haruki Nakamura,2 Yukari Shimizu,5 Koichiro Hayashi,1 Yohei Yamada,1 Phat Minh Nguyen,2 Yuichi Tao,2 Takayuki Kannon,3,6 Atsushi Tajima,3,6 Hiroyuki Nakamura1– 3 1Department of Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Ishikawa 920-8640, Japan; 2Department of Environmental and Preventive Medicine, Graduate School of Medical Science, Kanazawa University, Kanazawa, Ishikawa 920-8640, Japan; 3Kanazawa University Advanced Preventive Medical Sciences Research Center, Kanazawa, Ishikawa 920-8640, Japan; 4Innovative Clinical Research Center, Kanazawa University, Kanazawa, Ishikawa 920-8640, Japan; 5Department of Nursing, Faculty of Health Sciences, Komatsu University, Komatsu, Ishikawa 923-0961, Japan; 6Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Ishikawa 920-8640, JapanCorrespondence: Keita SuzukiDepartment of Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, 13-1, Takara-Machi, Kanazawa, Ishikawa 920-8640, JapanTel +81-76-265-2218Fax +81-76-234-4233Email keitasuzuk@stu.kanazawa-u.ac.jpPurpose: Although the explanation for inconsistencies in the reported association between serum 25-hydroxyvitamin D [25(OH)D] levels and chronic pain (CP) has not yet been determined, understanding this discrepancy is necessary for the development of vitamin D supplementation as an effective treatment for CP. The aim of this cross-sectional study was to examine the relationship between 25(OH)D concentrations and CP according to drinking habits in Japanese subjects.Patients and Methods: We distributed invitation letters to 2314 individuals older than 40 years in Shika town, a rural area in Japan, and 724 subjects (386 females; mean age: 63.9 ± 10.4 years) were recruited. CP was defined as persistent pain lasting at least 3 months in any part of the body. Serum concentrations of 25(OH)D, a biomarker of the vitamin D status, were measured using a radioimmunoassay. A serum 25(OH)D level < 20 ng/mL was defined as serum 25(OH)D deficiency. Drinking habits were assessed using a self-administered questionnaire. There were three choices, “rarely drink”, “sometimes” and “everyday”. Respondents who answered “rarely drink” were labelled as non-drinkers and the others as drinkers.Results: The prevalence of CP was 40.6%. A significant interaction between CP and drinking habits on 25(OH)D concentrations was observed (p = 0.098). A one-way analysis of covariance was performed to compare 25(OH)D concentrations between the subjects with and without CP in each drinking group, and the serum 25(OH)D levels of subjects with CP were significantly lower than those without CP among drinkers (p = 0.007). A logistic regression analysis revealed a correlation between serum 25(OH)D deficiency and CP in drinkers after adjustments for several confounding factors (odds ratio: 0.499; 95% confidence interval: 0.268 − 0.927; p = 0.028).Conclusion: The present results suggest that low serum 25(OH)D concentrations are associated with the development of CP in drinkers.Keywords: pain, vitamin D, alcohol, cross-sectional analysis, epidemiology

Background: Albuminuria is the standard biomarker for the diagnosis of diabetic nephropathy (DN). However, some patients with persistent microalbuminuria still progress to chronic kidney disease, raising the question of finding a better biomarker. This study aimed to evaluate the correlation of urinary liver-type fatty acid-binding protein (L-FABP) levels with renal function and to compare the role of urinary albumin-to-creatinine ratio (ACR) with urinary L-FABP in early detection of DN in type 2 diabetic patients. Methods: The cross-sectional study was done on 106 type 2 diabetic patients and 30 non-diabetic people. L-FABP was measured with the Latex enhanced immunoturbidimetric technique. Results: There was a strong and negative correlation between the urine L-FABP levels and eGFR (r = -0.606, p

This work presents the experimental study results of the influence of the culture medium on the ability to IAA synthesis of three endophytic strains TH10R, TH11T, and TH13T from roots of Ipomoea pes-caprae. Three investigated strains give the highest IAA concentration after 96 h of cultivation. A significant increase in IAA biosynthesis was obtained by cultivating the TH10R strain in a medium containing lactose or starch as a carbon source and NH4Cl or KNO3 as a nitrogen source. The TH11T strain produces the maximum amount of IAA, using glucose or xylose and KNO3 or NH4NO3 as carbon and nitrogen sources, respectively. Sucrose is a suitable carbon source for the TH13T strain; on a sucrose-containing medium, the TH13T strain produces the highest IAA amount. The most active strain is TH10R, identified as Bacillus mycoides and named Bacillus mycoides TH10R.

In this paper, we report on an international collaborative project designed to address the professional development needs of Vietnamese teachers for the implementation of Content and Language Integrated Learning (CLIL). We collected data on a group of CLIL Vietnamese teachers and leaders through online interviews. Drawing on Cultural-Historical Activity Theory (CHAT), the paper illuminates how CLIL teachers, as the subject of the professional learning (PL) system, utilized tools to develop their capacity for CLIL teaching against the backdrop of various sociocultural factors that regulate this learning process. The analysis helped us to identify various challenges facing CLIL teachers' PL. These challenges arose from an absence of an effective learning system mostly related to contextual obstacles and widespread misconceptions, even among the leaders and CLIL trainers, about the nature of CLIL. This study contributes suggestions to enhance the quality of PL for CLIL teachers, which is a pressing issue for the successful implementation of CLIL in the context of Vietnam and beyond.

Feedback is widely viewed as a powerful tool, yet a challenging professional undertaking, in initial teacher education. This paper explored how feedback was used to mediate pre-service teachers' (PSTs') learning, in the form of a qualitative study that illuminates both the perspectives of HEI tutors, school mentors and PSTs and the actual feedback provision process taking place in an EFL practicum in Vietnam. Data revealed a diversity of ways through which feedback was provided by mentors. Most prominent seemed to be that of 'detailed' but 'authoritative' feedback, the latter denoting a transmission approach whereby mentors were positioned as 'knowledge givers' and PSTs as 'knowledge receivers'. Drawing on the reflective practitioner perspective, the paper, however, argues that in a Confucian-influenced culture where PSTs might be accustomed to the 'listener' role like Vietnam, the monological feedback could be an effective supplement to the dialogical, reflective feedback widely advocated in Western contexts.

This study investigates the use of social media in English language teaching and learning in a Vietnamese university and the perceptions and attitudes of teachers and students towards its educational potential in this context. A mixed-methods design was employed, involving surveys administered to 16 teachers and 315 students, as well as qualitative data collected through interviews with five teachers and ten students. Results show that social media is used by both teachers and students, albeit mainly for non-study purposes. "Facebook" and "Google Docs" were the most popular platforms used for teaching and learning English, particularly for input skills such as vocabulary, grammar and reading. However, speaking and listening skills were less commonly taught using social media. Both teachers and students agreed that social media offers significant opportunities as an effective learning platform. To support the use of social media in language teaching and learning, the study recommends improving access to reliable technological resources, providing pedagogical training to teachers, and reflecting these reforms in university and departmental policies, funding and leadership.

Abstract Objectives Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) are the commonest bacterial causes of sexually transmitted infections in humans with high incidence of co-infection. Treatment with high doses of ceftriaxone (CRO) and cefixime (CFM) is strongly recommended due to the reduced drug susceptibility of NG. However, their safety and efficacy have not been confirmed. We compared the safety and efficacy of a single 1 g intravenous (IV) dose of ceftriaxone (CRO) plus doxycycline (DOX) versus a single 800 mg oral dose of cefixime (CFM) plus DOX for the treatment of NG-CT co-infection. Methods An open-label randomized controlled trial was conducted on 125 individuals aged > 18 years with untreated gonorrhea and chlamydia to compare a single 1 g intravenous dose of CRO + DOX and a single 800 mg oral dose of CFM + DOX. The primary outcome was the clearance of NG from all the initially infected sites. Secondary outcomes included symptom resolution, changes in the serum clearance levels, glomerular filtration rate, and antibiotic minimum inhibitory concentrations. Results Both regimens were highly effective in treating gonorrhea with success rates of 96.7% (95% confidence interval [CI] 88.8–99.1%) for CRO and 95.3% (95% CI 87.1–98.4%) for CFM. However, CRO + DOX was superior to CFM + DOX for the treatment of NG-CT co-infection (odds ratio 4.41, 95% CI 1.11–25.7). The safety profiles of the two regimens were similar. Conclusions CRO + DOX was superior to CFM + DOX for the treatment of NG-CT co-infection. CFM + DOX may be indicated in patients with CRO allergy and in settings where CRO is unavailable. Trial registration ClinicalTrials.gov (NCT05216744) on 31/01/22.

ABSTRACT: This study was conducted to characterize and compare the protective effects of various innate immune stimulants against yolk sac infection (YSI) caused by an avian pathogenic Escherichia coli in young chicks. The immune stimulants were administered alone or in various combinations of unmethylated CpG oligodeoxynucleotides (CpG), polyinosinic:polycytidylic acid (Poly I:C), and avian antimicrobial peptides (AMPs). Routes included in ovo or in ovo followed by a subcutaneous (S/C) injection. CpG alone and in combination with Poly I:C, truncated avian cathelicidin (CATH)-1(6-26), avian beta defensin (AvBD)1, and CATH-1(6-26) + AvBD1, were administered in ovo to 18-day-old embryonated eggs for gene expression and challenge studies. Next, CpG alone and the potentially effective formulation of CpG + Poly I:C, were administrated via the in ovo route using 40 embryonated eggs. At 1 day post-hatch, half of each group also received their respective treatments via the S/C route. Four hours later, all chicks were challenged using E. coli strain EC317 and mortalities were recorded for 14 d. The first challenge study revealed that amongst the single use and combinations of CpG with different innate immune stimulants, a higher protection and a lower clinical score were offered by the combination of CpG + Poly I:C. The second challenge study showed that this combination (CpG + Poly I:C) provides an even higher level of protection when a second dose is administered via the S/C route at 1 day post-hatch. The current research highlights the efficacy of a combination of CpG + Poly I:C administered either in ovo or in ovo along with a S/C injection and its potential use as an alternative to antibiotics against yolk sac infection in young chicks.

Background: BReast CAncer gene (BRCA)1 and BRCA2 mutation carriers are frequently provided genetic counselling. A precise estimation of the prevalence of BRCA gene mutations is essential to provide an appropriate risk prediction. However, the data in Vietnam is ambiguous and include unreliable risk factors from individual studies. Hence, the objective of this protocol is to provide a method to synthesize evidence pertaining to the proportion of BRCA mutations among Vietnamese women and their risk factors for cancer. Methods: PRISMA-P was followed in developing and reporting this protocol. From the databases' inception until June 2023, a comprehensive search will be undertaken in electronic PubMed and Scopus databases. In two stages, title/abstract screening and full-text screening, two independent authors will assess all retrieved articles for inclusion. This review includes papers providing the relevant results reflecting the prevalence of BRCA gene mutations in Vietnamese women who are at least 18 years old with or without cancer. Predefined selection criteria will be used to establish each publication's eligibility. Using the Newcastle-Ottawa Scale and Cochrane Risk of Bias tools, the quality of included studies will be assessed, and overall evidence quality will be appraised using the GRADE approach. All pertinent data from the included articles will be entered into an Excel spreadsheet for meta-analysis, which will be imported into Rstudio. Meta-analyses using random effects will be used to obtain the pooled percentages. The chi-squared test and I 2 parameter will be used to evaluate heterogeneity. Publication bias will be investigated visually using funnel plots for asymmetry and Egger's statistical tests. Conclusions: Based on the prevalence of BRCA muations and its associated comprehensive and specific risk factors, we hope our findings will provide a reference for future strategies to build an effective treatment plan and manage the risk of cancer development. Registration: PROSPERO ( CRD42022340152; 30 June 2022).

Intonation is an instrument for structuring discourse and emphasizing different types of information. In German, for example, pitch is used to highlight focus, while in Vietnamese, different pitch contours distinguish lexical tones. As of yet, the interplay between intonation and lexical tone in relation to information structure has not been sufficiently investigated across languages. Vietnamese has six lexical tones and is particularly interesting for investigating the influence of different intonation strategies on the realization of tones. Here, we present a production study with 70 Northern Vietnamese speakers. The participants read six sentences under two conditions. In each sentence, a word occurring in the final position of the sentence and carrying one of the six tones was pronounced in two different discourse contexts. Acoustic analyses of the intonation contours showed that Vietnamese speakers realized the words with significant differences in pitch at the onset. Yet, the strategies for raising or lowering the pitch varied depending on the tone. Our results show the use of prosodic cues in a complex tone system across a large number of speakers. In addition, the study can serve as a starting point for educational programs that include training on intonation patterns in specific contexts. [ABSTRACT FROM AUTHOR]

Probiotics are widely applied in aquaculture, which can improve the growth, survival and health of aquatic animals. The aim of this study was to isolate and evaluate a Lactobacillus strain from the intestine of healthy whiteleg shrimp, Litopenaeus vannamei. A total of 20 Lactobacillus isolates showed rod-shaped morphology, gram-positive, non-motile, non-spore forming, and catalase and oxidase negative. Among the isolates, strain CMT1 exhibited the highest antibacterial activity against Vibrio parahaemolyticus and extracellular enzyme activity, which was selected and identified as Lactobacillus plantarum CMT1 based on 16S rDNA gene sequencing. This strain was also chosen to evaluate its effects on growth and survival of the whiteleg shrimp as a feed supplement. Four different diets were prepared, including the control (a commercial diet without L. plantarum CMT1) and three different concentrations of L. plantarum CMT1, viz. T1 (106 CFU kg diet-1), T2 (107 CFU kg diet-1), and T3 (108 CFU kg diet-1). After a 56-day feeding trial, the growth parameters in the T3 group had the highest values and showed a significant difference compared to the other groups. The survival rates of shrimp fed T2 and T3 diets were significantly higher than those in the control diet (p < 0.05). The lowest FCR value was recorded in the T3 group and showed a significant difference compared to the control group (p < 0.05). In addition, Lactobacillus counts in T2 and T3 groups increased significantly from day 28, which indicated that L. plantarum CMT1 could sustain its population in the intestine of shrimp. However, the total Vibrio sp. count in the T2 and T3 groups was significantly lower than that in the control group (p < 0.05). In conclusion, L. plantarum CMT1 could be used as a potential probiotic for shrimp aquaculture, and the recommended level of the probiotic strain CMT1 is 108 CFU kg diet-1. [ABSTRACT FROM AUTHOR]

Recycling is viewed as a key component in a circular economy and serves as an ideal solution for promoting sustainability. During the global plastic crisis, plastic recycling practices have been adopted worldwide, leading to the production of various products made from recycled plastics (PRP). Nevertheless, a gap persists between consumption and demand for such products, which is primarily attributed to a lack of comprehension from the consumer perspective. Given the pivotal role consumers play in the adoption of these products, this study explores consumers’ intentions to purchase PRP. This is particularly significant in Vietnam, which is an emerging economy aspiring to achieve the objectives of a circular economy and sustainable development. Utilizing an integrated cognitive-emotional framework comprising the Valence Theory and the Norm Activation Model, data from 564 Vietnamese students were gathered and analyzed using structural equation modeling. The results show that awareness of consequences is a major driver of consumer purchase intentions, followed by perceived ease of application and monetary incentives. The results also indicate that health concerns have the strongest effect on purchase intention and in the negative side, meaning that the health-related risk is the primary concern for consumers during the decision-making process. This research holds substantial value for academics and managers, as it aids in the theoretical exploration and the formulation of strategies to improve consumer acceptance of PRP. [ABSTRACT FROM AUTHOR]

Introduction: Crohn's disease (CD) is a chronic inflammatory bowel disease, of which the etiology involves genetic, environmental and microbial factors. Adherent-invasive Escherichia coli (AIEC) and polymorphisms in autophagy-related genes have been implicated in CD etiology. Autophagy is a key process for the maintenance of cellular homeostasis, which allows the degradation of damaged cytoplasmic components and pathogens via lysosome. We have shown that a functional autophagy is necessary for AIEC clearance. Here, we aimed at identifying the autophagy receptor(s) responsible to target AIEC to autophagy for degradation. Methods: The levels of autophagy receptors p62, NDP52, NBR1, TAX1BP1 and Optineurin were knocked down in human intestinal epithelial cells T84 using siRNAs. The NDP52 knock-out (KO) and p62 KO HeLa cells, as well as NDP52 KO HeLa cells expressing the wild-type NDP52 or the mutated NDP52Val248Ala protein were used. Results and discussion: We showed that, among the tested autophagy receptors (p62, NDP52, NBR1, TAX1BP1 and Optineurin), diminished expression of p62 or NDP52 increased the number of the clinical AIEC LF82 strain inside epithelial cells. This was associated with increased pro-inflammatory cytokine production. Moreover, p62 or NDP52 directly colocalized with AIEC LF82 and LC3, an autophagy marker. As the NDP52Val248Ala polymorphism has been associated with increased CD susceptibility, we investigated its impact on AIEC control. However, in HeLa cell and under our experimental condition, no effect of this polymorphism neither on AIEC LF82 intracellular number nor on pro-inflammatory cytokine production was observed. Together, our results suggest that p62 and NDP52 act as autophagy receptors for AIEC recognition, controlling AIEC intracellular replication and inflammation. [ABSTRACT FROM AUTHOR]

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Misconceptions and pressures have increased the sales of antibiotics without a prescription across countries. There are concerns with such practices in Vietnam given rising antimicrobial resistance rates. A national survey was conducted among 360 private drugstores located in nine provinces in Vietnam. Anonymous interviews were conducted with participants selected by convenience sampling. Subsequently, multivariable logistic regression analyses were undertaken evaluating the relationship between customer characteristics and antibiotic purchases. A total of 480 out of 1626 surveyed participants purchased antibiotics, 81.7% of which did not have a prescription, involving 29 different antibiotics. In 86.4% of these, participants were prescribed antibiotics by drug sellers. Most antibiotics were sold to treat respiratory tract infections (61.4%), with the ‘Access’ antibiotics (amoxicillin and cephalexin) being the most frequently sold. Only one-fifth of participants understood that they were breaking the law by purchasing antibiotics without a prescription. Participants purchasing antibiotics without a prescription had lower awareness concerning antibiotic laws and treatment duration (p < 0.05). Under 50% agreed to having a doctors’ prescription in the future when purchasing antibiotics. Freelancer occupation (OR = 0.52, 95% CI = 0.83–0.96) and a lower educational level (OR = 0.49, 95% CI = 0.25–0.96) were factors related to purchasing antibiotics without a prescription. Overall, we recommend increasing fines and monitoring of drugs stores, greater promotion of the family doctor system as well as increasing media and educational campaigns to limit self-purchasing of antibiotics in Vietnam and reduce resistance.

A synergistic multilayer membrane design is necessary to satisfy a multitude of requirements of an ideal wound dressing. In this study, trilayer dressings with asymmetric wettability, composed of electrospun polycaprolactone (PCL) base membranes coated with oligomer chitosan (COS) in various concentrations of polyvinylpyrrolidone (PVP), are fabricated for wound dressing application. The membranes are expected to synergize the hygroscopic, antibacterial, hemostatic, and biocompatible properties of PCL and COS. The wound dressing was coated by spraying the solution of 3% COS and 6% PVP on the PCL base membrane (PVP6–3) three times, which shows good interaction with biological subjects, including bacterial strains and blood components. PVP6–3 samples confirm the diameter of inhibition zones of 20.0 ± 2.5 and 17.9 ± 2.5 mm against Pseudomonas aeruginosa and Staphylococcus aureus, respectively. The membrane induces hemostasis with a blood clotting index of 74% after 5 min of contact. In the mice model, wounds treated with PVP6–3 closed 95% of the area after 10 days. Histological study determines the progression of skin regeneration with the construction of granulation tissue, new vascular systems, and hair follicles. Furthermore, the newly-growth skin shares structural resemblances to that of native tissue. This study suggests a simple approach to a multi-purpose wound dressing for clinical treatment.

Income improvement is the primary expectation when deciding to migrate. However, due to the limited resources and urban facilities, informal sector work leads to an increasing income gap with local workers, migrant workers in big cities are considered the most vulnerable population. When there is no social policy, migrants are even more susceptible to the negative impacts of COVID-19. To identify necessary bases for short-term and long-term intervention to attract workers to return and quickly adapt to the urban life in the economic recovery process, the study surveyed to clarify the assessment of COVID-19 support packages from which the most beneficial are electricity and water exemption and reduction, food support, loan interest reduction, and loan for salary payment. The study also used survey results from two pandemic centers in the southern region to estimate factors and impacts on the workers’ income in terms of integration, the results show that the major significant factors are education, housing, work sector, self-employment, and social insurance. We take notices to enhance workers’ integration to help retain workers by short-term measurements from the support package’s assessments and long-term measurements from the income and integration estimates to attract workers after the pandemic.