bluuebunny/crossref_metadata_2025 huggingface dataset:
Energetics of the Antarctic Circumpolar Current. Part I: The Lorenz Energy Cycle and the Vertical Energy Redistribution
Authors: Matsuta Takuro , Masumoto Yukio
Published: March 2023

Recent studies suggest that the eddy kinetic energy is localized in the lee of significant topographic features in the Antarctic Circumpolar Current (ACC). Here we explore the importance of the local dynamics quantitatively using the outputs from the realistic ocean general circulation model hindcast with the aid of the modified Lorentz energy cycle. Results confirm the importance of energy transfer among reservoirs in the downstream region of standing meanders, showing that the major five standing meanders are responsible for more than 70% of the kinetic energy transfer to eddies and dissipation over the Antarctic Circumpolar Current region. The eddy kinetic energy is generated in the upper 3000-m depth downstream of the standing meanders and transported due to the vertical energy redistribution governed by the vertical pressure flux toward the deeper layer where the eddy energy is dissipated. Moreover, we also calculate the work done by the Ekman transport to confirm that the wind energy input works as the dominant energy source for the baroclinic energy pathway. The advantage of this quantity against the vertical mean density flux is that it is independent of the reference states defined arbitrarily. It is shown that the westerlies can supply sufficient energy locally to initiate baroclinic instability in the Indian and Pacific sectors of the ACC, whereas the nonlocal process is important in the Atlantic sector. Our results suggest that the five narrow regions associated with significant topography play key roles in the energy balance of the ACC region.

Significance Statement

The purpose of this study is to understand the eddy–mean flow interactions in the Antarctic Circumpolar Current from the energetic viewpoint. Our results show that the five narrow regions called “hotspots” in our study are responsible for the energy transfer from the mean flow to eddies. It is also found that the hotspots are important for the energy sink in the Southern Ocean. These findings suggest that the five hotspots are likely to play key roles in the responses of the Antarctic Circumpolar Current to the changes in westerlies in these decades.
Impact of Fluid Balance on Intensive Care Unit Length of Stay in Critically Ill Trauma Patients
Authors: Bright Treasure V. , Johnson Donald W. , Humanez Jose C. , Husty Todd D. , Crandall Marie , Shald Elizabeth A.
Published: March 2023

Background

There is significant data in the medical and surgical literature supporting the correlations between positive volume balance and negative outcomes such as AKI, prolonged mechanical ventilation, intensive care unit and hospital length of stay and increased mortality.

Methods

This single-center, retrospective chart review included adult patients identified from a Trauma Registry database. The primary outcome was the total ICU LOS. Secondary outcomes include hospital LOS, ventilator-free days, incidence of compartment syndrome, acute respiratory distress syndrome (ARDS), renal replacement therapy (RRT), and days of vasopressor therapy.

Results

In general, baseline characteristics were similar between groups with the exception of mechanism of injury, FAST exam, and disposition from the ED. The ICU LOS was shortest in the negative fluid balance and longest in the positive fluid balance group (4 days vs 6 days, P = .001). Hospital LOS was also shorter in the negative balance group than that of the positive balance group (7 days vs 12 days, P < .001). More patients in the positive balance group experienced acute respiratory distress syndrome compared to the negative balance group (6.3% vs 0%, P = .004). There was no significant difference in the incidence of renal replacement therapy, days of vasopressor therapy, or ventilator-free days.

Discussion

A negative fluid balance at seventy-two hours was associated with a shorter ICU and hospital LOS in critically ill trauma patients. Our observed correlation between positive volume balance and total ICU days merits further exploration with prospective, comparative studies of lower volume resuscitation to key physiologic endpoints compared with routine standard of care.
Early Use of Extracorporeal Membrane Oxygenation for Traumatically Injured Patients: A National Trauma Database Analysis
Authors: Lammers Daniel , Rokayak Omar , Uhlich Rindi , Hu Parker , Baird Emily , Rakestraw Stephanie , Betzold Richard , McClellan John , Eckert Matthew
Published: March 2023

Introduction

Extracorporeal membrane oxygenation (ECMO) in acute trauma patients is a poorly characterized event. While ECMO most commonly has been deployed for advanced cardiopulmonary or respiratory failure following initial resuscitation, growing levels of evidence for out of hospital cardiac arrest support early ECMO cannulation as part of resuscitative efforts. We sought to perform a descriptive analysis evaluating traumatically injured patients, who were placed on ECMO, during their initial resuscitation period.

Methods

We performed a retrospective analysis of the Trauma Quality Improvement Program Database from 2017 to 2019. All traumatically injured patients who received ECMO within the first 24 hours of their hospitalization were assessed. Descriptive statistics were used to define patient characteristics and injury patterns associated with the need for ECMO, while mortality represented the primary outcome evaluated.

Results

A total of 696 trauma patients received ECMO during their hospitalization, of which 221 were placed on ECMO within the first 24 hours. Early ECMO patients were on average 32.5 years old, 86% male, and sustained a penetrating injury 9% of the time. The average ISS was 30.7, and the overall mortality rate was 41.2%. Prehospital cardiac arrest was noted in 18.2% of the patient population resulting in a 46.8% mortality. Of those who underwent resuscitative thoracotomy, a 53.3% mortality rate was present.

Conclusion

Early cannulation for ECMO in severely injured patients may provide an opportunity for rescue therapy following severe injury patterns. Further evaluation regarding the safety profile, cannulation strategies, and optimal injury patterns for these techniques should be evaluated.
Time to Splenic Angioembolization Does Not Impact Splenic Salvage Rates
Authors: Harfouche Melike N. , Dhillon Navpreet K. , Hawley Kristy L. , DuBose Joseph J. , Kozar Rosemary A. , Feliciano David V. , Scalea Thomas M.
Published: March 2023

We aimed to determine whether early (<6 hours) vs delayed (≥6 hours) splenic angioembolization (SAE) after blunt splenic trauma (grades II-V) impacted splenic salvage rates at a level I trauma center (2016-2021). The primary outcome was delayed splenectomy by timing of SAE. Mean time of SAE was determined for those who failed vs those who had successful splenic salvage. We retrospectively identified 226 individuals, from which 76 (33.6%) were in the early group and 150 (66.4%) were in the delayed group. The early group had higher AAST grade, greater amount of hemoperitoneum on CT, and 3.9x greater odds of undergoing delayed splenectomy (P = .046). Time to embolization was shorter in the group that failed splenic salvage (5 vs 10 hours, P = .051). On multivariate analysis, timing of SAE had no effect on splenic salvage. This study supports performing SAE on an urgent rather than emergent basis in stable patients after blunt splenic injury.
Case Report of Renal Cell Carcinoma Metastasis to the Breast
Authors: Breese Rebecca O. , Friend Kara
Published: March 2023

Metastases from other primary malignancies to the breast are extremely rare, with an incidence of up to 2%. Renal cell carcinoma (RCC) is known to form micrometastases in unusual organs. This report describes a case of a RCC metastasis to the breast that was identified 20 years after nephrectomy. The patient, a 68-year-old female, presented after a new abnormality was found on a screening mammogram. The biopsy, which was reviewed by several pathologists, revealed a renal cell carcinoma metastasis. Imaging confirmed no other metastases, and she was treated with a partial mastectomy. This case highlights how RCC metastases can be found many years after a nephrectomy, and staining for RCC should be considered in patients with this history and a newly identified breast mass.
“We are Human too.”: The Challenges of Being an End-of-Life Doula
Authors: Hahn Sarah , Butler Emily A. , Ogle Kimberly
Published: March 2023

End-of-life (EOL) doulas are emerging professionals who provide an intimate approach to the death process by focusing on the psychological, social, spiritual, and emotional needs of dying individuals. EOL doula work is stressful; it exposes individuals to recurring stressors such as suffering and grief. Trained professionals are needed to help advocate for the dying individual and their families. Despite the growing literature on EOL doulas, information regarding the challenges of being an EOL doula is underrepresented in the literature. This paper is one of the first to address this concept. Twelve in-depth, semi-structured interviews regarding the EOL doula experience were conducted as a part of a larger exploratory study. Three overarching themes emerged from the larger project: motivations to become an EOL doula, roles of an EOL doula, and challenges of an EOL doula. In this article, only challenges of EOL are discussed, along with subsequent subordinate themes.
Investigating Surgeons’ Reactions to Patients’ Death: A Phenomenological Study
Authors: Jalili Maryam , Rezapour-Mirsaleh Yasser , Mirhosseini Seyed Jalil
Published: March 2023

The main purpose of this study was to scrutinize the reaction of surgeons towards patients’ death. This study enjoyed a qualitative approach using a phenomenological lived experience. 12 surgeons who had witnessed patients’ death were selected through purposive sampling until data saturation was achieved. The data were collected using semi-structured interviews and were analyzed through the Colaizzi’s method. The main concepts extracted from the analysis of the participants' experience comprised three main themes, six sub-categories and 19 initial sub-categories. The main themes were (a) emotional-mental reactions including the sub-themes of emotional distress, mood disorder and mental distress, (b) death encounter including the sub-themes of rational encounter and pre-emptive measure and (c) post-traumatic growth covering the concepts of optimism and performance improvement. The obtained findings imply that the patients’ death can sometimes make surgeons aware of the post-incident growth although such deaths affect their personal, family, social and professional lives.
Daily Hassles and Eating Behaviours in Adults: Exploring the Buffering Effects of Daily Uplifts
Authors: Moss Rachael H. , Conner Mark , O’Connor Daryl B.
Published: March 2023

Existing research has shown that daily hassles are associated with increases in between-meal snacking, often resulting in the increased consumption of high sweet and high fat foods. However, it is currently unclear whether the presence of daily uplifts may buffer the negative effects of daily hassles on unhealthy eating behaviour. Therefore, the current study explored the main and interactive effects of daily hassles and daily uplifts on snacking behaviours in adults. One hundred and sixty participants (M age: 23.69 years) reported their daily hassles, daily uplifts and snacking behaviours over the preceding 24 hour period. Participants’ emotional eating style was also measured. Using moderated regression analysis, the daily hassles x daily uplifts interaction was found to be statistically significant for both total snack and unhealthy snack consumption. Simple slopes analyses showed that the relationship between daily hassles and snacking was weaker and non-significant at higher levels of daily uplifts compared to moderate and lower levels. The current study provides novel evidence that daily uplifts may act as a buffer against the negative impact of daily hassles on food consumption.
Maximizing the Potential of Reflective Practice in Pre-Service Language Teacher Education: The Issue of Authenticity
Authors: Yuan Rui
Published: March 2023

Reflective practice (RP) has been widely promoted in many second language teacher education programs to foster pre-service teachers’ pedagogical competence. However, the effectiveness of RP has often been questioned and challenged due to its lack of authenticity in practice. This Viewpoint paper focuses on the issue of authenticity of RP and how it can manifest and shape the complex process of learning to teach. Specifically, the paper proposes a tentative framework with practical tools and strategies for the design and implementation of authentic RP. The framework emphasizes the context, content, and process dimension of authenticity in both RP instruction and assessment, where student teachers can gradually develop their reflective abilities and learn how to integrate RP into their future classroom practice. The paper also outlines directions for future research on RP in second language teacher education.
Digital Storytelling: A Literacy-Building Tool to Promote Willingness to Communicate in a Second Language
Authors: Shen Xiang , Shen Xunbing , Peng Jian-E
Published: March 2023

Digital storytelling has made its way into second language classrooms due to its great potential in promoting linguistic and non-linguistic outcomes increasingly recognized by second language educators. However, the links between digital storytelling and second language learners’ willingness to communicate still remain largely unknown. The present thematic review first presents an introduction to digital storytelling and then elucidates its critical roles in promoting second language willingness to communicate traced to four aspects: creating ample opportunities to practice the second language, negotiating aspired identities, engaging learners with cultural and multimodal resources, and constructing communities of shared interests. Finally, directions for future research are discussed.
Money, Debt and Finance: Reclaiming the Conditions of Possibility in Consumption Research
Authors: Evans David M , Gregson Nicky
Published: March 2023

This article provides an argument for why the sociology of consumption should be reorientated towards a money and finance sensibility. Proceeding from the observation that the rise of financialised capitalism has gone largely ignored in in the field, we suggest that the conditions of contemporary consumption – shaped by austerity, inflation and an energy crisis – render this neglect untenable. In omitting money, the field not only elides its conditions of possibility but also abandons understanding of credit and consumer society to other fields that do not adequately acknowledge the dynamics of consumption. The article offers: (1) an account of why money has been absent from the sociology of consumption; (2) an auto-archaeology of data from our previous studies of household consumption in the UK, but reinterpreted and read through the lens of money and finance and (3) an indication of future research priorities and pathways for a reorientated sociology of consumption.
THE STILLBORN UNITED KINGDOM‒UNITED STATES TRADE AGREEMENT
Authors: Khorana Sangeeta , Kerr William A.
Published: March 2023

With Brexit done and the desire to alter U.S. trade policy in the wake of the election of President Donald Trump, both British Prime Minister Boris Johnson and President Trump were optimistic that a trade agreement between the United Kingdom and the United States could be swiftly negotiated. This proved not to be the case despite the efforts of both leaders. We use an Open Economy Politics lens to examine the political and economic forces at work in both the United Kingdom and the United States during the tenure of the Trump administration that led to the initiative being stillborn and why the original optimism was misplaced.
Diet quality as a mediator in the relationship between perceived stress and depression among family caregivers of patients with chronic illness in Saudi Arabia
Authors: Alreshidi Salman M. , Rayani Ahmad M. , Alhumaid Ahlam F.
Published: March 2023

Objective

The purpose of this research was to examine the correlation between caregivers’ perceived stress and depression and the mediating role of diet in this relationship.

Methods

A cross-sectional survey was performed from January to August 2022 in the Kingdom of Saudi Arabia. Utilizing the Stress Scale, the Anxiety and Depression Scale, the Health Promoting Lifestyle Profile-II questionnaire, and the Patient Health Questionnaire-9, researchers assessed levels of perceived stress, diet quality, and depression. A bootstrap approach and the SPSS PROCESS macro were used to assess the importance of the mediation effect. The target population was family caregivers of patients with chronic illness at Medical City in Saudi Arabia. Researchers surveyed a convenience sample of 127 patients, with 119 providing complete data for a response rate of 93.7%. A significant correlation was found between depression and perceived stress ( β = 0.438, p < 0.001). Diet quality mediated the relationship between depression and perceived stress ( β = 0.187, p = 0.018). The importance of the indirect effect of perceived stress through diet quality was supported by the nonparametric bootstrapping method (95% bootstrap CI = 0.010, 0.080). The indirect effect of diet quality explained 15.8% of the overall variation in depression.

Conclusions

These findings help to clarify the mediating effects of diet quality on the relationship between perceived stress and depression.
Administration and Results of a State Alternate Assessment Based on Alternate Academic Standards in Science for Students Who Are Blind and Have Low Vision
Authors: McCarthy Tessa , Schles Rachel Anne , Moore Debra W.
Published: March 2023

Introduction: This study evaluated performance and engagement on the tactile science alternate assessment based on alternate academic standards (AA-AAS). This assessment was designed for students with significant intellectual disabilities and visual impairments (i.e., blindness and low vision). Four primary research questions guided this study. What were the demographic characteristics of the students who took the tactile AA-AAS-science? How did students who took the tactile AA-AAS-science perform? What accommodations, accessibility options, and communication strategies were employed in the administration of the tactile AA-AAS-science? Was there a correlation between any administration practices and improved student results? Methods: Thirty-four students with visual impairments and significant intellectual disabilities participated in the 2017 administration of the AA-AAS-science. Post-hoc analyses of the testing strategies were conducted using video recordings of each assessment. Videos were coded for accommodations, student performance, engagement, and appropriateness of the assessment for each student. Results: The tactile materials were the primary accommodation provided to students and were totally novel in 79.1% of the administrations. Students were not permitted to thoroughly explore materials. In many cases, the exam content was determined to be too difficult for the students. Discussion: This study supports the literature and suggests benefits in academic instruction for all students. For academic instruction to be meaningful, students need appropriate accommodations and consistent materials. Implications for Practitioners: Test administrators for assessments based on alternate academic standards should use familiar materials during a test administration, preferably the same materials used during instruction. It is also important for teachers to prepare students and allow for time to systematically explore tactile materials. Teachers can support students by including academic goals in the individualized education program.
A Conceptual Framework for Digital Competence of Students With Low Vision and Blindness
Authors: Kamei-Hannan Cheryl , Tuttle Michael J. , Songkhao Rujira
Published: March 2023

Introduction: Proficient use of technology requires many intersecting skills including literacy, citizenship, advocacy, self-determination, and digital competence. In this study, the authors engaged experts in the field of visual impairment in focus groups with the purpose of defining digital competence, discussing issues related to visual impairment, identifying specific skills, and organizing technology competencies. Methods: Purposeful sampling was used to recruit 32 assistive technology and literacy experts in the field of visual impairment to participate in a series of focus groups. Each focus group was presented with four main topics (1) defining digital competence, (2) identifying specific considerations for individuals with visual impairments (i.e., those who are blind or have low vision), (3) forming a list of technology competencies, and (4) categorizing competencies into an organized structure. Within-group consensus and across-group data saturation were achieved after nine focus groups were conducted via teleconferencing. Results: Focus groups led to three significant findings. First, the consensus was reached by participants on the definition of digital competence. Second, participants agreed upon considerations for individuals with visual impairments. Third, a set of 41 competencies was created. A consensus was not reached on categorizing the competencies. However, several themes arose including the need to address problem solving, accessibility, self-advocacy, citizenship, and self-determination, in addition to technology skills. Discussion: Authors concluded the study by presenting a framework for digital competence that may be used to guide future research. Implications for Practitioners: Students’ success in digital learning environments is predicated on skills that extend beyond device usage. In addition to using digital tools efficiently and effectively, instruction should include opportunities for self-determination, access, problem solving, critical thinking, citizenship, and advocacy.
Teaching Strategies and Nonvisual Skills Used by Orientation and Mobility Specialists Who Are Visually Impaired
Authors: Griffin-Shirley Nora , Bozeman Laura , Okungu Phoebe , Ihenagwam Chinomso , Nguyen The
Published: March 2023

Introduction: To better serve students with visual impairments who are enrolled in personnel preparation programs training orientation and mobility (O&M) specialists, faculty should be aware of effective teaching strategies, tools, and resources to use. In this context, it is vital that instructors in personnel preparation programs for O&M specialists to understand how to best serve students with visual impairments. Two prior studies have addressed this need. This study sought to establish what techniques and teaching strategies O&M instructors who are visually impaired use when teaching students O&M skills to ensure their safety. Methods: This study used a qualitative research design using a case study approach to explore the teaching strategies, nonvisual skills, and accommodations that O&M instructors who are visually impaired use when teaching O&M lessons to their students. Eight participants with visual impairments who are O&M instructors were interviewed for this study. Results: The themes that emerged from the interviews included structured discovery learning and philosophy, monitoring and teaching strategies, equipment and materials, and accommodations. These findings played a vital role when instructors with visual impairments provided O&M lessons to students who are visually impaired. Discussion: This research confirms and adds to the previous research regarding instructional strategies, equipment and materials, and accommodations utilized by O&M instructors who are visually impaired. Additionally, further information was provided concerning instructional strategies (e.g., structured discovery learning and philosophy, monitoring). Implications for Practitioners: The results reported in this study can serve as guidelines for O&M personnel preparation program faculty who are teaching students with visual impairments in their blindfold or simulation cane courses. This study can also be used as a reference for students with visual impairments to advocate for accommodations with their university's office of students with disabilities to be successful in an O&M personnel preparation program.
Usability of 4to24: A Transition Application for Parents of Students With Visual Impairments
Authors: Antonelli Karla , Steverson Anne , Cmar Jennifer L.
Published: March 2023

Introduction: This article covers the technical development and usability testing of 4to24, a mobile application (app) for students with visual impairments and their parents. The app includes information and resources on numerous topics to support and encourage preparation for employment from an early age. Methods: We partnered with technical developers from the blindness field to design and develop the app using an iterative approach that included usability testing at two key points in the development process. Technical developers incorporated accessibility into the app's design as it was built. Researchers conducted two rounds of usability testing with a total of 9 parents and 10 students. Participants completed specific tasks in the app and completed the System Usability Scale (SUS) to assess the app's usability. Results: Mean SUS scores were 80.83 for Round 1 and 83.75 for Round 2, indicating above-average usability at both time points. In each round, participants provided feedback on the app interface and identified issues impacting the app's ease of use. Discussion: We devised a system that automatically sends relevant informational modules to users based on the student's age, grade level, experience, and progress. The iterative design process allowed us to seek user feedback through usability testing and correct identified issues as development progressed, resulting in an intuitive and easy-to-use app. We also assessed and corrected accessibility issues as they arose, ensuring that the app met users’ accessibility needs. Implications for Practitioners: 4to24 is a usable and accessible mobile app that provides parents and students with relevant, timely information and resources to help students prepare for employment as they grow.
The Efficacy of Tranexamic Acid on the Postoperative Bleeding in Patients Receiving Head-and-Neck Surgery: A Meta-Analysis
Authors: Kim Do Hyun , Kim Sung Won , Basurrah Mohammed A. , Hwang Se Hwan
Published: March 2023

Objectives

We assessed the effect of tranexamic acid on postoperative bleeding, and any adverse effects, in patients undergoing head-and-neck surgery.

Methods

We searched databases (PubMed, SCOPUS, Embase, the Web of Science, Google Scholar, and the Cochrane database) from their dates of inception to August 31, 2021. We analyzed studies that compared bleeding-related morbidity between perioperative tranexamic acid and placebo (control) groups. We subanalyzed tranexamic acid administration methods.

Results

The extent of postoperative bleeding (standardized mean difference [SMD] = –0.7817, [–1.4237; –0.1398], P = 0.0170, I2 = 92.2%) was significantly less in the treatment group. However, there were no significant between-group differences in terms of operative time (SMD = –0.0463 [–0.2147; 0.1221]; P = 0.5897, I2 = 0.0% [0.0%; 32.9%]); intraoperative blood loss (SMD = –0.7711 [–1.6274; 0.0852], P = 0.0776, I2 = 94.4%); drain removal timing (SMD = –0.3382 [–0.9547; 0.2782], P = 0.2822, I2 = 81.7%); or the amount of infused perioperative fluid (SMD = –0.0622 [–0.2615; 0.1372], P = 0.5410, I2 = 35.5%). Also, there were no significant between-group differences in laboratory findings (serum bilirubin, creatinine, and urea levels; and the coagulation profiles) between the tranexamic acid and control groups. Topical application was associated with a shorter postoperative drain tube dwell time than was systemic administration.

Conclusion

Perioperative tranexamic acid significantly reduced postoperative bleeding in patients undergoing head-and-neck surgery. Also, topical administration might be more effective in postoperative bleeding and postoperative drain tube dwell time.
Right transmanubrial approach to the cervicothoracic spine with venous reconstruction
Authors: Yutaka Yojiro , Date Hiroshi , Otsuki Bungo , Fujibayashi Shunsuke
Published: March 2023

The transmanubrial approach first reported by Grunenwald in 1997 is well-known for superior sulcus lung malignancies involving the thoracic inlet. Because an anterior approach to levels below Th2 is difficult without removing the manubrium, we used the transmanubrial approach for anterior cervicothoracic corpectomy and fusion (C7–Th3) in a patient with bilateral lower extremity paralysis due to ossification of the posterior longitudinal ligament in the cervicothoracic spine. To ensure more working space in the deep surgical field, which was hindered by a prior cardiac operation with median sternotomy and a goiter protruding into the upper mediastinal region, the right brachiocephalic vein was temporarily divided and subsequently reconstructed using bovine pericardium.
Development and validation of the MAnchester Needs Tool for Injured Children (MANTIC)
Authors: Jones Samantha , Tyson Sarah , Yorke Janelle
Published: March 2023

Objective

To develop a measure of the needs injured children and their families’ needs throughout recovery; The MAnchester Needs Tool for Injured Children (MANTIC).

Design

Tool development, psychometric testing.

Setting

Five children's major trauma centres in England.

Participants

Children aged 2 to 16 years with any type of moderate/severe injury(ies) treated in a major trauma centre within 12 months of injury, plus their parents.

Methods

Stage 1a (Item generation): Interviews with injured children and their parents to generate draft items. Stage 1b (Co-production): Feedback about item clarity, relevance and appropriate response options was provided by parents and the patient and public involvement group. Stage 2 (Psychometric development): Completion of the prototype MANTIC by injured children and their parents with restructuring (as necessary) to establish construct validity. Concurrent validity was assessed by correlation with quality of life (EQ-5D-Y). MANTICs were repeated 2 weeks later to assess test–retest reliability.

Results

Stages 1a,b: Interviews (13 injured children, 19 parents) generated 64 items with semantic differential four-point response scale (strongly disagree, disagree, agree, strongly agree). Stage 2: One hundred and forty-four participants completed MANTIC questionnaires (mean age 9.8 years, SD 3.8; 68.1% male). Item responses were strong requiring only minor changes to establish construct validity. Concurrent validity with quality of life was moderate ( r = 0.55, P < 0.01) as was test–retest reliability (ICC = 0.46 and 0.59, P < 0.001). Uni-dimensionality was strong (Cronbach's α > 0.7)

Conclusion

The MANTIC is a feasible, acceptable, valid self-report measure of the needs of injured children and their families, freely available for clinical or research purposes.
Mass Concrete Mixtures Optimized for Temperature Control and High Workability
Authors: Ozyildirim H. Celik , Sharifi Mary , Hossain M. Shabbir
Published: March 2023

Mass concrete is prone to thermal cracking, deleterious chemical reactions, and ultimate strength reduction caused by a high temperature rise. Defining mass concrete has been difficult since many factors affect the thermal behavior and the distress formation. Mass concrete is usually reinforced and may have geometric constraints that require concretes with high workability, as with self-consolidating concrete. For high workability and strength, high amounts of cementitious material are used for stability and low water–cementitious material ratios. Such amounts generally cause high water and paste contents that lead to cracking because of moisture loss and thermal contraction. In this study, a practical and useful definition of mass concrete was explored. Concretes with low cementitious material contents and high workability were investigated. To minimize the total cementitious material and paste contents, optimum aggregate gradations were considered. To achieve and maintain high workability during construction, a combination of admixtures was used that included high-range water reducing, workability-retaining, and viscosity-modifying admixtures. Laboratory testing of concretes with reduced cementitious material contents including high amounts of the supplementary cementitious materials and a combination of admixtures showed that concretes with a decreased temperature rise, high workability, and adequate strength can be obtained.
Textured Epoxy-Coated Rebars: Physical, Structural, and Empirical Characterization
Authors: Pérez-Claros Ernesto , Andrawes Bassem
Published: March 2023

Although the traditional epoxy coating represents an effective corrosion protection system, it has the disadvantage of making bridge decks more susceptible to cracking. This phenomenon occurs because its smooth surface reduces the bond with the concrete and, therefore, increases the radial components of the force-transferring mechanism. To try to mitigate these problems, the Illinois Department of Transportation developed the textured epoxy-coated (TEC) reinforcement, which possesses a roughened surface and, in recent years, has been the subject of study at the University of Illinois Urbana-Champaign, in the U.S. Particularly, this experimental program explores, complements, and compares the physical and bond-slip characteristics of the TEC rebars developed hitherto. From the physical characterization, different parameters are measured on the textured surfaces to obtain a numerical comparison of each roughness type. Also, determining the adhesion strength and thickness of the textured coating reveals that it provides similar corrosion protection to the traditional approach while keeping its integrity on the steel substrate. The bond-slip characterization, in turn, was done using pull-out tests and, by combining these results with the microstructure examination of TEC bars, it is found that the absence of texture voids is related to the degradation of the slip resistance. Furthermore, through a finite element model, the development length of the TEC reinforcement is estimated and compared with the values calculated according to current standards. Finally, given the complexity of obtaining the surface parameters of the coating, an empirical, weight-based approach is developed for the TEC bars as a rapid method for assessing their roughness.
Adaptive Headway Control Algorithm for Mixed-Traffic Stabilization and Optimization with Automated Cars and Trucks
Authors: Xiao Xiao , Zhang Yunlong , Wang Xiubin B. , Guo Xiaoyu
Published: March 2023

Automated vehicle (AV) technology provides an opportunity to increase capacity and reduce congestion while maintaining stability and flow rate by allowing AVs to control their movements using references such as vehicle headways. Studies have been conducted on advancing the control algorithm of automated cars, and recent research has focused on different AV market penetration ratios. However, a straightforward way to control AVs using model parameters considering different AV types (i.e., cars and trucks) has seldom been both investigated and implemented. A method is developed to show the feasibility of controlling AVs using the desired headway as a variable to ensure stability and satisfy demand. The proposed adaptive headway control method for automated vehicles can stabilize flow and optimize flow rate in a mixed-traffic environment with four vehicle types: (1) AV cars, (2) non-AV cars, (3) AV trucks, and (4) non-AV trucks. At various AV market penetration ratios and truck percentages, the relationship between AV headways and stability is investigated. The model is implemented and tested in a simulation environment based on real-time interactions of the External Driver Model and VISSIM. Numerical analyses demonstrate that if the truck percentage is 80% or less, traffic is stable with the proposed control algorithm. The proposed algorithm is evaluated in microscopic simulation. Compared with the baseline case with no headway control, the proposed adaptive headway control algorithm can lead to less oscillation in traffic flow and can also reduce the delay by 23.19% while increasing the average travel speed up to 9.09%.
Medial Discoid Meniscus in Children: A Multicenter Case Series of Clinical Features and Operative Results
Authors: Anderson Kathryn G. , Carsen Sasha , Stinson Zachary , Kushare Indranil , Finlayson Craig J. , Nault Marie-Lyne , Lee R. Jay , Haus Brian M. ,   PRiSM Meniscus Research Interest Group, Schmale Gregory A.
Published: March 2023

Background:

The discoid medial meniscus is a rare congenital anomaly of the knee. The literature is limited to small case series.

Purpose/Hypothesis:

Our purpose is to report the clinical manifestations and operative treatments of discoid medial menisci in children from multiple centers in North America. We hypothesized that symptoms and signs, arthroscopic findings, surgical treatments, and outcomes are similar to those for symptomatic discoid lateral menisci.

Study Design:

Case series; Level of evidence, 4.

Methods:

A retrospective review identified patients with a diagnosed discoid medial meniscus confirmed at surgery across 8 children’s hospitals between January 2000 and June 2021. The literature on discoid lateral menisci was reviewed and summarized for comparison.

Results:

A total of 21 patients (9 female, 12 male) with 22 discoid medial menisci were identified. The mean ± SD age at the time of diagnosis was 12.8 ± 3.8 years. The most common symptoms and signs were locking and/or clunking, present in 12 of 22 knees (55%), similar to that reported in patients with discoid lateral menisci. Twelve discoid medial menisci were complete (55%); 8, incomplete (36%); and 2, indeterminate (9%). Tears were present in 13 knees, most commonly horizontal cleavage (54%). Five discoid medial menisci were unstable (23%): 3 for posterior tears and 2 for rim insufficiency. All 22 knees underwent arthroscopic saucerization, and of the 13 torn menisci, 7 (54%) were repaired. The median follow-up was 24 months (range, 2-82 months). Four knees underwent reoperation. All knees that required reoperation had undergone repair for a posteriorly located tear. There was a significant association between operative repair and need for reoperation ( P = .0048). High rates of peripheral instability were also noted in case series of patients with discoid lateral menisci.

Conclusion:

Patient presentations and treatments for those with discoid medial menisci were similar to those reported for patients with discoid lateral menisci. Knees with discoid medial menisci also demonstrated instability attributed to peripheral insufficiency and posterior tears. Tears were present in over half of knees with discoid medial menisci, and reoperation was more common in knees that underwent repair of tears than those without repair.
Study of the possible effect of sacubitril/valsartan combination versus valsartan on the cognitive function in Alzheimer’s disease model in rats
Authors: El-din Hussein Abdallah Salah , Abou-El Nour Rahma Kamal El-Din , Khorshid Omayma A , Osman Afaf S
Published: March 2023

Objectives: Alzheimer’s disease (AD) is an irreversible, progressive neurodegenerative disorder. The proportion of elderly individuals at risk for AD and cardiovascular problems increases by raising life expectancy. The present study was designed to investigate the effect of the sacubitril/valsartan combination compared to that of valsartan alone in a rat model of AD. Methods: 72 male adult Wistar rats were divided into seven groups; control untreated rats received saline, control valsartan-treated rats received valsartan orally, control sacubitril/valsartan treated rats received sacubitril/valsartan orally, model rats received aluminum chloride i.p., model valsartan treated rats received aluminum chloride i.p. and valsartan orally and model sacubitril/valsartan treated rats received aluminum chloride i.p. and sacubitril/valsartan combination orally. All previous treatments continued on a daily basis for 6 weeks. At the second, fourth, and sixth weeks of the experiment, behavioral changes were evaluated using the Morris water maze and novel object recognition tests, and systolic blood pressure was measured. In the end, rat brain malondialdehyde and amyloid-beta 1-42 levels were measured, and the isolated hippocampus was evaluated histopathologically. Results: Valsartan improved AD symptoms in the aluminum-induced rat model, while the sacubitril/valsartan combination significantly worsened all tested parameters in both control and model rats compared with untreated and valsartan-treated animals. Conclusion: Based on the current study’s findings, valsartan did not increase the risk for AD development in control rats and improved AD symptoms in a rat model, while sacubitril/valsartan combination increased the risk of AD in control rats and worsened the condition in a rat model.
Natural rubber latex films with effective growth inhibition against S. aureus via surface conjugated gentamicin
Authors: Arakkal Aswin , Sirajunnisa Paramban , Sailaja Gopalakrishnanchettiar Sivakamiammal
Published: March 2023

Hospital-associated infections and related complications are of extreme concern in the healthcare sector since biofilms generated over material surfaces not only create turbulence in the healthcare practices followed but also ruin the device performance, and increased medication, leading to significant chances of drug resistance. Natural rubber latex (NRL) being the first choice for the manufacture of several conventional biomedical devices, it is essential to ensure the surfaces of the same are inherently inactive against most microorganisms. This study presents NRL film surface conjugated with a well-known antibiotic, gentamicin through an amide linkage to generate antibacterial activity to the surface with a significant growth inhibition rate, especially against Staphylococcus aureus. The NRL films were surface-oxidized under controlled acidic conditions to generate carboxyl groups exploring the unsaturation of the base monomer unit. The carboxyl group reacts with the amine groups of gentamicin facilitating its surface conjugation. The surface anchoring was authenticated by FTIR-ATR complimented further by contact angle measurement as a function of hydrophilicity and elemental analysis by EDX spectroscopy. The antibacterial efficacy of modified NRL films was evaluated using antibacterial drop test and the results indicated a substantial growth inhibition rate (>60%) against Pseudomonas aeruginosa and Staphylococcus aureus. The study could be further optimized and proposed as a viable route for the conjugation of active molecules over inert polymer molecules.
Navigating and Countering Everyday Antimuslim Racism: The Case of Muslim Women in Sweden
Authors: Muftee Mehek
Published: March 2023

In a socio-political context where antimuslim racism has gained momentum, this article aims to understand Muslim women’s everyday life experiences of racialization in Sweden. More importantly, it aims to highlight what strategies are developed in order to navigate and counter these experiences. By using the concepts of double consciousness, orientations, and respectability together with an understanding of Muslims as a racialized category, the article shows how experiences of antimuslim racism are handled by the women in different ways, both on individual and collective level. Being a Muslim woman in Sweden requires developing strategies and sometimes engaging in respectability politics.
Choreographies of Care: A Dance of Human and Material Agency in Rehabilitation Work with Robots
Authors: Gasparre Angelo , Tirabeni Lia
Published: March 2023

This article seeks to advance the understanding of how human and material agency enmesh in human-robotic workplaces. By means of a qualitative study, the practical use of robots is investigated within two organisations for medical rehabilitation. The theoretical framework combines Andrew Pickering’s ‘dance of agency’ with a process-oriented view of technology as technical rationality. It shows how resistances and accommodations are enacted by both humans and nonhumans as analytical loci of the dance of agency, and it explains how the experimental activities that are concerned with technology adoption and use are emergently fixed in formal or informal rules of coordination of action – the ‘choreographies of care’. By extending the processual orientation of Pickering’s ‘dance of agency’, and by further elaborating on the organisational implications of technological change within it, the article increases understanding of how the transformation of material agency may enact processes of change in the organisational culture.
Numerical simulation of moving boundary problem with moving phase change material and size-dependent thermal conductivity
Authors: Rabeeb Ali VP , Awasthi Ashish , Nisar Kottakkaran Sooppy
Published: March 2023

The Keller box method is applied to the one-phase moving boundary problem with moving phase change material, size-dependent thermal conductivity, and periodic boundary conditions. The phase transition process is allowed to occur when the material is forced to move in one direction or the other at a constant speed. The boundary immobilization method is applied to immobilize the moving boundary, and for the numerical approximation of moving boundary problem, we proposed Keller box method. Keller box method also accommodates the non-linearity in thermal conductivity and Stefan condition. Using the convergence analysis, the proposed scheme obtains stability, as well as second-order accuracy for both spatial and temporal directions, under reasonable conditions. To validate the proposed numerical scheme, we have considered a particular case of this problem having a similarity solution. It is found that the numerical results obtained by the Keller box method have good agreement with the similarity solution and also verified that the computational rate of convergence of our scheme is two. The effects of various parameters and size-dependent thermal conductivity on the position of moving boundary are also investigated.
Inequality and the social construction of urban disaster risk in multi-hazard contexts: the case of Lima, Peru and the COVID-19 pandemic
Authors: Lavell Allan , Chávez Eslava Angel , Barros Salas Cinthya , Miranda Sandoval Diego
Published: March 2023

This field note examines the disaster risk construction process in Lima, Peru. More commonly experienced hazard contexts are considered in the light of the COVID-19 pandemic. We provide an empirical analysis based on Lima-wide data and using findings from a single case study settlement to illustrate more general conclusions. We attempt to reveal how exposure and vulnerability factors signify that very different hazards, including COVID-19, predominantly affect the same population groups. Underlying causes and drivers, all related to different expressions of urban inequality, include problems of access to suitable urban land, land trafficking and invasion, State exclusion from social housing and basic services, unsafe building practice and corruption. The research confirms the usefulness of a social construction approach to disaster risk, based on the notion of underlying causes and drivers, and the need to reconfigure urban planning processes, breaking sector silos and encouraging integrated intersectoral and interspatial approaches.