Comprehensive Measures Research Articles

Comparing Spoken Versus iPad-Administered Versions of a Narrative Retell Assessment Tool in a Practice-Based Research Partnership.

In the current age of greater digital delivery of services, it is important to examine the validity and differences between spoken and digital delivery of materials. The current study is a practice-based research partnership between school-based speech-language pathologists (SLPs) and researchers, evaluating presentation effects and validity of a narrative retell assessment tool created by SLPs. Fifty-one children across kindergarten, Grade 1, and Grade 2 completed the narrative retell task, retelling One Frog Too Many and Frog Goes to Dinner in three in-person story presentation conditions administered 1 week apart: spoken, iPad with audio-recorded natural rate of speech, and iPad with slow rate of speech. This was followed by 10 comprehension questions related to story events. Children also completed the Story Retelling subtests from the Test of Integrated Language and Literacy Skills (TILLS). Children recalled significantly fewer events in the spoken condition compared to audio-recorded iPad conditions. No significant effect of speaking rate was found. Presentation condition and rate did not affect performance on comprehension questions. Correlations among retell measures and corresponding subtests on a standardized language test ranged from weak to strong, providing some evidence of concurrent validity. This practice-based research partnership provided valuable insight into differences in delivery modality as well as the validity of a school-based SLP created narrative retell assessment tool. This study found that rate did not impact recall of events or performance on comprehension questions. Additionally, children performed better on narrative retell measures when stories were told using an iPad. This highlights the potential for iPad delivery as an option in narrative retell tasks. Finally, this study provided an initial examination of the Narrative Evaluation Tool's validity, finding the tool captures ability to recall narrative events; however, future studies are needed to examine the tool's validity as a measure of narrative comprehension. https://doi.org/10.23641/asha.25260910.

Property status and wife beating justification in Ghana: an integrated theoretical approach

Intimate partner violence is a pervasive global human rights issue that has prompted the establishment of various international charters and national-level comprehensive legislative measures to combat this problem effectively. To attain success, it is also imperative to contextualize intimate partner violence within its underlying precursors and address them systematically and methodically. In this article, we focus on two obstacles hindering the effort of policymakers to eradicate intimate partner violence in Ghana: wife beating justification and restricted access to permanent or temporary shelters for victims. The aim is to investigate the correlation between these two indicators to determine if empowerment in property ownership can influence and unseat the belief that wife beating is justified. Leveraging data from the 2014 Ghana Demographic and Health Survey, we utilized a comprehensive theoretical approach by integrating normalization, social learning, resource, and gendered resource theories. Subsequently, we estimated a stepwise logistic regression, which revealed that while a higher proportion of women justified wife beating than men, empowering women with landed properties (arable or otherwise) significantly reduced the odds of justifying wife beating. However, among the men, a different pattern was observed. The findings presented in this article emphasize the protective nature of property ownership and stress the significance of improving women’s access to property. This enhancement aims not only to support livelihoods but also to diminish the inclination to justify wife beating.

Traditional herbal medicine use doubled the risk of multi-organ dysfunction syndrome in children: A prospective cohort study.

Traditional herbal medicine (THM) is frequently used in pediatric populations in many low-income countries as a form of healthcare and has been associated with a range of adverse events, including liver toxicity, renal failure, and allergic reactions. Despite these concerns, its impact on multi-organ dysfunction syndrome (MODS) risk has not been thoroughly investigated. This study aimed to investigate the incidence and predictors of MODS in a pediatric intensive care unit (PICU) in Ethiopia, with a focus on the association between THM use and the risk of MODS. This was a single-center prospective cohort study conducted at a PICU in the university of Gondar Comprehensive Specialized hospital, Northwest Ethiopia. The study enrolled eligible patients aged one month to 18 years admitted to the PICU during the study period. Data on demographic characteristics, medical history, clinical and laboratory data, and outcome measures using standard case record forms, physical examination, and patient document reviews. The predictors of MODS were assessed using Cox proportional hazards models, with a focus on the association between traditional herbal medicine use and the risk of MODS. A total of 310 patients were included in the final analysis, with a median age of 48 months and a male-to-female ratio of 1.5:1. The proportion and incidence of MODS were 30.96% (95% CI:25.8, 36.6) and 7.71(95% CI: 6.10, 9.40) per 100-person-day observation respectively. Renal failure (17.74%), neurologic failure (15.16%), and heart failure (14.52%) were the leading organ failures identified. Nearly one-third of patients (32.9%) died in the PICU, of which 59.8% had MODS. The rate of mortality was higher in patients with MODS than in those without. The Cox proportional hazards model identified renal disease (AHR = 6.32 (95%CI: 3.17,12.61)), intake of traditional herbal medication (AHR = 2.45, 95% CI:1.29,4.65), modified Pediatric Index of Mortality 2 (mPIM 2) score (AHR = 1.54 (95% CI: 1.38,1.71), and critical illness diagnoses (AHR = 2.68 (95% CI: 1.77,4.07)) as predictors of MODS. The incidence of MODS was high. Renal disease, THM use, mPIM 2 scores, and critical illness diagnoses were independent predictors of MODS. A more than twofold increase in the risk of MODS was seen in patients who used TMH. Healthcare providers should be aware of risks associated with THM, and educate caregivers about the potential harms of these products. Future studies with larger sample sizes and more comprehensive outcome measures are needed.

Expert consensus on immunoprophylaxis of childhood rotavirus gastroenteritis (2024 version)

Rotavirus gastroenteritis (RVGE) is a global public health challenge that seriously threatens the health of children under 5 years of age. In China, the burden associated with RVGE is substantial and its prevention and control are difficult. On the basis of Expert Consensus on Immunoprophylaxis of Childhood Rotavirus Gastroenteritis (2020 Version) and Rotavirus Vaccines: WHO Position Paper-July 2021, in this updated consensus we systematically review advances in RVGE epidemiological research; safety, effectiveness/efficacy, and immune persistence of post-marketing rotavirus (RV) vaccines; and RV immunization strategies. We also provide guidance for RVGE diagnosis and treatment. Following the principles of prioritizing prevention and integrating medical and preventive approaches, we aim to facilitate the implementation of comprehensive prevention and control measures focusing on RV vaccination to reduce the childhood RVGE disease burden and provide reference for professionals working for disease control and prevention, vaccination, clinical diagnosis and treatment, and related fields.

Unpacking the terminology used in human cochlear dimension methodologies

Many definitions of the dimensions of cochlear measurements are described in the literature. However, these terminologies are typically not standardised or vary among disciplines. Confusion of the defined parameters may lead to ambiguity in the derived dimensions. Inconsistent terminology may, therefore, contribute to the variations reported in cochlear morphology. This article proposes using a standard set of terminology, including its associated landmarks and measurements, to describe the shape and dimensions of the human cochlea. To provide a basis for comparison for the dimensional description of ambiguous terms in the literature and to supplement existing data where terms are unique, micro-CT (μCT) scans of thirty temporal bones were subjected to landmarking and measuring according to the terminology standard. The results confirm that methodological techniques and definitions of cochlear measurements may affect the quantification of dimensions that describe cochlear morphology and may, therefore, introduce variations when reporting these measurements. Histology and μCT images, for example, could provide a more accurate and comprehensive measure of cochlear dimensions than measurements on casts.

Targeted Metabolomics on Rare Primary Cells.

Cellular function critically depends on metabolism, and the function of the underlying metabolic networks can be studied by measuring small molecule intermediates. However, obtaining accurate and reliable measurements of cellular metabolism, particularly in rare cell types like hematopoietic stem cells, has traditionally required pooling cells from multiple animals. A protocol now enables researchers to measure metabolites in rare cell types using only one mouse per sample while generating multiple replicates for more abundant cell types. This reduces the number of animals that are required for a given project. The protocol presented here involves several key differences over traditional metabolomics protocols, such as using 5 g/L NaCl as a sheath fluid, sorting directly into acetonitrile, and utilizing targeted quantification with rigorous use of internal standards, allowing for more accurate and comprehensive measurements of cellular metabolism. Despite the time required for the isolation of single cells, fluorescent staining, and sorting, the protocol can preserve differences among cell types and drug treatments to a large extent.

Critical Thinking in Reading Comprehension: Fine Tuning the Simple View of Reading

Critical thinking has been identified as an essential skill for the 21st century, yet little research has investigated its role in reading comprehension. Executive functions (EF) and critical thinking overlap, where the latter often rely on the proficient operation of EF and vice versa. Extending the simple view of reading, the active view of reading considers the contribution of language comprehension and decoding to reading comprehension by including the role of EF. In the present study, we assess 360 seventh-grade English language learners attending schools in three states in India. We gathered measures of reading comprehension, critical thinking and listening comprehension, reading fluency, academic vocabulary, and encoding. Using multiple regression to fit a linear model, the best-fit model explained 59.3% of the total variance in reading comprehension. Two indicators of critical thinking, induction and deduction, were significant predictors of reading comprehension, along with listening comprehension, encoding, and academic vocabulary. Also of interest was the result showing reading fluency to be a non-significant predictor of reading comprehension. Results of this study add empirical support for the role of critical thinking in reading comprehension.

Socio-Ecological Responsibility Using Triple Bottom Line Method Perspective of Mamayu Hayuning Bawana

This research explores the application of the Triple Bottom Line (TBL) concept and Socio-Ecological Responsibility from the perspective of Mamayu Hayuning Bawana (MHB) at Unisma Islamic Hospital Malang. Facing the complex challenges of life, especially in the healthcare sector, companies need to consider social, economic, and environmental aspects in a balanced manner. Unisma Islamic Hospital Malang demonstrates a commitment to TBL with a focus on Profit, People, and Planet. This is reflected in efficient financial management, improved access to healthcare services, proper medical waste management, and the adoption of green technology. The Mamayu Hayuning Bawana concept is also applied, emphasizing harmony between humans, nature, and the divine. The implementation of TBL and Mamayu Hayuning Bawana aims to create a balance between economic needs, social welfare, and environmental sustainability. The Islamic Hospital of the University of Islam Malang (RSI Unisma) has successfully achieved harmony between economic growth, social concern, and environmental preservation, replacing competition with harmonious synergy. This research contributes to understanding sustainability practices in the healthcare sector and encourages other companies to adopt TBL for socio-ecological sustainability. Future studies can focus on other industries, develop more comprehensive impact measurement methods, and involve the community in decision-making processes.

Paternal Activation as a Protective Factor against Problem Behaviors in Early Childhood.

Activation parenting includes behaviors that challenge children to approach novel situations, explore their environments, and take physical and socioemotional risks through a balance of encouragement and limit-setting. Although components of activation parenting have been linked to lower levels of children's problem behaviors, comprehensive measures of activation parenting and longitudinal research on families from low socioeconomic backgrounds are lacking. The goal of the present study was to test associations between paternal activation parenting at age 3 and children's externalizing and internalizing problems at age 5 in a sample of low-income, ethnically diverse fathers. Participating fathers (N = 171; 9% Black, 47% white, 8% Latinx; mean household income = $25,145) and their children (51% female) were drawn from the Early Steps Multisite Study. Activation parenting during a teaching task at child age 3 was associated with lower levels of internalizing problems at age 5 and decreases in externalizing problems from baseline (age 2). Implications of the current findings are presented for future research on associations between activation parenting and child problem behaviors, including the potential for the development of prevention and intervention programs.

Degradable and biocompatible nanofibrous scaffold incorporating a natural cell culture medium for skin tissue engineering

The use of green materials in biomedical and bioengineering applications has significantly expanded in recent years. In this study, we utilized egg white (EW) as an abundant and cost-effective green material, blended with polycaprolactone/gelatin (PCL/Gel), to fabricate an electrospun scaffold. The fabricated samples underwent comprehensive physicochemical characterization, including SEM, FT-IR spectroscopy, tensile assay, and contact angle measurement. These optimized samples were subsequently employed for cell culture experiments. The average diameter of the prepared nanofibers ranged from 215.9 to 434.1 nm. FT-IR and DSC assays confirmed the physical blending of EW, PCL, and Gel without any occurrence of new chemical reactions. The contact angle test demonstrated a decrease in scaffold hydrophilicity from 26.25° to 116.5° with an increase in EW content within the PCL/Gel blend (0%-15%). Notably, the electrospun PCL/Gel nanofibrous mat containing 10% EW exhibited enhanced bioactivity compared to other samples with varying amounts of EW. Consequently, incorporating 10% EW into PCL/Gel nanofibers can significantly improve the efficiency of fibroblast culture. This research introduces a novel nanofibrous scaffold for skin tissue engineering, incorporating Gel and EW as low-cost and readily available materials, with great potential for various biological applications.

Comparison of Amine-Modified Polymeric Stationary Phases for Polar Metabolomic Analysis Based on Unified-Hydrophilic Interaction/Anion Exchange Liquid Chromatography/High-Resolution Mass Spectrometry (Unified-HILIC/AEX/HRMS).

In metabolomic analysis, one of the most commonly used techniques to support the detection sensitivity and quantitation of mass spectrometry is combining it with liquid chromatography. Recently, we developed a method that enables comprehensive single-run measurement of hydrophilic metabolites using unified-hydrophilic interaction/anion exchange liquid chromatography/high-resolution mass spectrometry (unified-HILIC/AEX/HRMS) with a polymer-based mixed amines column (Gelpack GL-HilicAex). However, the importance of stationary phase functional groups and mobile phase conditions for the separation mechanisms and sensitive detection in unified-HILIC/AEX/HRMS is not yet fully understood. This study aimed to understand the importance of the mobile and stationary phases in unified-HILIC/AEX/HRMS. Two different alkali-resistant polymer-based amines-modified columns (Gelpack GL-HilicAex, primary, secondary, tertiary, and quaternary amine-modified polyglycerol dimethacrylate gel; Asahipak NH2P-50 2D, secondary amine-modified polyvinyl alcohol gel) and two eluents (acetonitrile and ammonium bicarbonate solution, pH 9.8) were used for comparative validation. A comparison of mobile phase conditions using both columns confirmed that the two-step separation from HILIC to AEX characteristic of unified-HILIC/AEX requires a linear gradient condition from acetonitrile to nearly 50% water and AEX with up to 40 mM bicarbonate ions. We found that when alkali-resistant hydrophilic polymer packing materials are modified with amines, unified-HILIC/AEX separation can be reproduced if at least one secondary amine associated with the amine series is present in the stationary phase. Furthermore, the difference in sensitivity in the HILIC and AEX modes owing to the different columns indicates the need for further improvements in the mobile phase composition and stationary phase.

MAIL ORDER BRIDE DI INDONESIA: ANALISIS PERSPEKTIF FEMINISME LIBERAL

This study aims to examine the practice of mail order bride in Indonesia, a practice that involves the choice of Indonesian women who are below the poverty line. Using qualitative methods with secondary data sources and adopting liberal feminist theory, the findings of the analysis show that women involved in this practice tend to be influenced by economic conditions, patriarchal stigma, and lack of access to education. Despite the Indonesian government's efforts through collaboration with women's protection organizations, the complexity of the challenges faced by Indonesian women indicates the need for more concrete and comprehensive measures. Therefore, in order to confront this practice, the Government of Indonesia needs to strengthen the policies that address the root causes of the poverty line among women involved in mail order bride, and ensure equitable welfare for women across Indonesia.

Constructing and validating the museum product creativity measurement (MPCM): dimensions for creativity assessment of souvenir products in Chinese urban historical museums

AbstractAs museums continue to play an increasingly significant role in the preservation, innovation, and dissemination of cultural heritages, the products sold in their souvenir shops have become a vital carrier of cultural and creative industries. The creativity of these products has drawn intensive attention from various industries. However, the evaluation of museum products’ creativity still lacks objectivity, scientific rigour, and systematisation. This study aims to construct a contextual and comprehensive measurement model to evaluate the creativity of products purchased in souvenir shops affiliated with urban historical museums in China. Based on the literature, ten related hypotheses were introduced, and a conceptual model was illustrated. Six relevant dimensions and 28 corresponding indicators were identified, and then a 7-point Likert-styled questionnaire was developed. An online survey was conducted, which invited 931 participants to take part. Among them, 708 responses are valid (rate 76.05%). The overall reliability of the survey is 0.96 (Cronbach’s α). Then, exploratory factor analysis, confirmatory factor analysis and a structural equation modelling analysis using SPSS and SmartPLS were conducted. The results supported most hypotheses proposed by this study and confirmed the validity of the museum product creativity measurement (MPCM). The validated instrument comprises five dimensions: Affect, Usefulness, Aesthetics, Cultural Values and Novelty, with a total of 21 indicators. Additionally, the findings revealed that Aesthetics mediates Affect, and Cultural Values mediate Usefulness. Moreover, a negative moderating effect of Educational Level on the perception of Cultural Values was detected.

Comprehensive needs, social support, and disease perception in lung cancer patients treated with immune checkpoint inhibitors: a cross-sectional study.

The aim of this study was to investigate the comprehensive needs of lung cancer patients treated with immune checkpoint inhibitors and to explore the relationships between comprehensive needs and social support and disease perception, moreover, to analyse associated factors of comprehensive needs. The study was conducted in a teaching hospital in Jiaxing Province, China. A total of 141 patients with lung cancer completed a battery of self-report questionnaires, including the Comprehensive Needs Assessment Tool in Cancer for Patients (CNAT), Social Supportive Rating Scale (SSRS), Brief Illness Perception Questionnaire (BIPQ), and demographic and clinical characteristics questionnaire. The level of comprehensive needs was highest in the domain "medical demand" (42.17 ± 26.57), and the item with the highest level of comprehensive needs was "I need information about the financial support for my medical expenses" (2.00 ± 1.07). Statistically significant correlations were identified between the comprehensive needs score, social support, and disease perception. The multiple regression analysis showed that immunotherapy course, whether irAEs occur, social support, and disease perception were factors influencing patients' comprehensive needs. The most prevalent needs in lung cancer patients were found in the "medical needs" domain. Additionally, immunotherapy course, whether irAEs occur, disease perception, and social support were associated with comprehensive needs among lung cancer patients. It is essential to combine the associated factors to accurately evaluate patient needs. We should pay more attention to proposing the comprehensive measures for these patients and providing more individualized supportive care during the lengthy treatment period.

Application Research of Fish-Plant Symbiosis Technology in a Urban Lake: A Case Study of the Environment Remediation Project with Machine Learning Application

This research examines the Jiefang Park Water Environment Remediation Project, a pioneering initiative in urban lake rehabilitation. The project is anchored in a fish-plant symbiosis system, which has significantly improved water quality, upgrading it from Category V to Category III, and in certain zones, achieving the commendable Category II. This enhancement is quantitatively marked by a notable reduction in nitrogen and phosphorus levels, and a marked increase in water transparency, with submerged plants covering over 70% of the lakebed.A key innovation is the utilization of a machine learning model to predict chlorophyll-a concentration, a vital water quality metric. The model’s accuracy is underscored by its R² values, ranging from 0.23 to 0.99, and RMSE values between 6.921 and 0.237, with the best performance at point 1. Additionally, comprehensive measurement data highlight the project’s effectiveness. Water transparency significantly improved from baseline levels, as evidenced by increased dissolved oxygen levels at various sampling sites, indicative of restored ecological equilibrium in the lake. This study represents an exemplary fusion of ecological restoration and advanced data analytics, signifying a substantial advancement in urban lake restoration. It underscores the potential of combining synergistic ecological approaches with technological innovation to further sustainable urban environmental management.

Biosecurity Challenges: How Defense Strategies Against Tuberculosis In Asean Countries

This comprehensive research provides a thorough analysis of tuberculosis (TB) incidence trends and sanitation challenges within the ASEAN region spanning from 2005 to 2021. It underscores the critical need for robust defense strategies against TB, particularly in light of setbacks exacerbated by the COVID-19 pandemic. The research, conducted in Jakarta, Indonesia, from June to July 2023, delved into biosecurity challenges of tuberculosis in ASEAN countries, using a quantitative approach and cross-sectional design. Data from 2005 to 2021, sourced from the ASEAN database, underwent descriptive statistics and trend analysis to explore TB incidence rates, ensuring a comprehensive investigation scope. The study places emphasis on the imperative of implementing comprehensive measures encompassing prevention, screening, swift diagnosis, utilization of advanced treatment regimens, and ensuring robust patient support systems. Moreover, it highlights the pivotal role of addressing sanitation challenges, as substandard conditions significantly heighten the risks of TB transmission. The study's scope encompasses an array of critical subjects, with a central focus on TB incidence rates, as well as the crucial aspects of access to improved sanitation facilities and sanitation services. The conclusion is the ASEAN region, especially the Philippines, faces a notable tuberculosis burden, coupled with uneven access to sanitation. Effective interventions and collaboration are vital for improving public health and sanitation standards in ASEAN countries.

Health care disparities and chronic rhinosinusitis: Does neighborhood disadvantage impact outcomes in sinonasal disease?

Socioeconomic status (SES) is linked to health outcomes but has not been well studied in patients with chronic rhinosinusitis (CRS). The area deprivation index (ADI) is a comprehensive measure of geographic SES that ranks neighborhood disadvantage. This investigation used ADI to understand the impact of neighborhood disadvantage on CRS treatment outcomes. A total of 642 study participants with CRS were prospectively enrolled and self-selected endoscopic sinus surgery (ESS) or continued appropriate medical therapy as treatment. The 22-item SinoNasal Outcome Test (SNOT-22) and Medical Outcomes Study Questionnaire Short-Form 6-D (SF-6D) health utility value scores were recorded pre- and post-treatment. Using residence zip codes, national ADI scores were retrospectively assigned to patients. Spearman's correlation coefficients (Rs) and Cramer's V effect size (φc) with 95% confidence interval (CI) were calculated. A history of ESS was associated with significantly worse ADI scores compared to no history of ESS (φc=0.18; 95% CI: 0.10, 0.25; p<0.001). Baseline total SNOT-22 (Rs=0.14; 95% CI: 0.06, 0.22; p<0.001) and SF-6D values (Rs=-0.20; 95% CI: -0.27, -0.12; p<0.001) were significantly negatively correlated with national ADI rank. No significant correlations between ADI and within-subject improvement, or achievement of>1 minimal clinically important difference, in SNOT-22 or SF-6D scores after treatment were found. Geographic socioeconomic deprivation was associated with worse baseline disease severity and history of prior surgical intervention. However, ADI did not correlate with improvement in disease-specific outcomes. The impact of socioeconomic deprivation on outcomes in CRS requires further investigation.

The Technical Adequacy of Coding Procedures for Retell Measures in Elementary School Students with Dyslexia

This study examined the psychometric properties of two common frameworks for scoring retell data (i.e., clause- and idea unit-based methods) among 86 third- through fifth-grade students with dyslexia. At the beginning and end of the school year, students read two grade-level R-CBM probes (one orally and one silently) and engaged in a retell following each passage. Results from the clause- and idea unit-based scoring frameworks were compared to a criterion measure, the GORT-5 Reading Comprehension subtest. Both retell scoring methods demonstrated adequate temporal stability across the school year and were also sensitive to detecting growth in student’s comprehension skills across the year. Clause- and idea unit-based scores were found to correlate strongly with one another and correlated moderately to strongly with the criterion measure. Although differences did not emerge in the correlational results, mean differences did emerge with clause-based scoring resulting in a higher percentage of recall than did idea-units. Overall, results from this study provide support for the validity of retell as a measure of reading comprehension among elementary school students with dyslexia.

The effect of incentive spirometry in perioperative patients with lung cancer—a systematic review and meta-analysis

BackgroundIncentive spirometry (IS) as a routine respiratory therapy during the perioperative period has been widely used in clinical practice. However, the impact of IS on patients with perioperative lung cancer remains controversial. This review aimed to evaluate the efficacy of IS in perioperative pulmonary rehabilitation for patients with lung cancer.MethodsCochrane Library, PubMed, Web of Science, Ovid, CINAHL, Chinese National Knowledge Infrastructure, Weipu, and Wanfang Databases were searched from inception to 30 November 2023. Only randomized controlled trials were included in this systematic review. The PRISMA checklist served as the guidance for conducting this review. The quality assessment of the included studies was assessed by the Cochrane risk-of-bias tool. The meta-analysis was carried out utilizing Review Manager 5.4. Furthermore, sensitivity analysis and subgroup analysis were also performed.ResultsNine studies recruited 1209 patients met our inclusion criteria. IS combined with other respiratory therapy techniques was observed to reduce the incidence of postoperative pulmonary complications, enhance pulmonary function, curtail the length of hospital stay, and lower the Borg score. Nevertheless, no improvements were found in the six-minute walk distance or quality of life score.ConclusionsAlthough IS demonstrates benefits as a component of comprehensive intervention measures for perioperative patients with lung cancer, it proves challenging to determine the precise impact of IS as a standalone component within the comprehensive intervention measures. Therefore, further researches are required to better understand the effectiveness of IS isolation and its interactions when integrated with additional respiratory therapies for these patients.Clinical trial registrationPROSPERO, https://www.crd.york.ac.uk/prospero/, registry number: CRD42022321044.

Study on Bulk-Surface Transport Separation and Dielectric Polarization of Topological Insulator Bi1.2Sb0.8Te0.4Se2.6.

This study successfully fabricated the quaternary topological insulator thin films of Bi1.2Sb0.8Te0.4Se2.6 (BSTS) with a thickness of 25 nm, improving the intrinsic defects in binary topological materials through doping methods and achieving the separation of transport characteristics between the bulk and surface of topological insulator materials by utilizing a comprehensive Physical Properties Measurement System (PPMS) and Terahertz Time-Domain Spectroscopy (THz-TDS) to extract electronic transport information for both bulk and surface states. Additionally, the dielectric polarization behavior of BSTS in the low-frequency (10-107 Hz) and high-frequency (0.5-2.0 THz) ranges was investigated. These research findings provide crucial experimental groundwork and theoretical guidance for the development of novel low-energy electronic devices, spintronic devices, and quantum computing technology based on topological insulators.