bluuebunny/crossref_metadata_2025_split huggingface dataset:
Entropy Generation Analysis and Cooling Time Estimation for a Rotating Vertical Hollow Tube in the Air Medium
Authors: Rana Basanta Kumar , Senapati Jnana Ranjan 
Published: January 2021

Abstract
An objective function combining the first and second laws of thermodynamics has been employed to delineate the thermodynamic performance on mixed convection around a vertical hollow, rotating cylinder within the laminar range with the variation of Rayleigh number (104 ≤ Ra ≤ 108), Reynolds number (ReD &lt; 2100), and aspect ratio (1 ≤ L/D ≤ 20). Entropy generation in the system is predominantly triggered by heat transfer in comparison to fluid friction. The irreversibility incurred progressively increases with an increase in Ra and ReD. The variation pattern of (I/Q)Rotation/(I/Q)Non−Rotation has been demonstrated to find out the optimized regime where heat transfer is maximum within the laminar range. The contribution of fluid friction irreversibility toward total irreversibility rises abruptly with an increase in ReD for all cases of L/D and Ra. To demonstrate this study's thermodynamic characteristics, the static temperature contours as well as the contours of entropy generation have been represented pictorially. The estimation of cooling time has been reported by using the method of lumped capacitance.
Evolutionary Design Method for a Conducting Solid Cooled by Combined Free Convection and Radiation
Authors: Sevart Chadwick D. , Bergman Theodore L. 
Published: January 2021

Abstract
An iterative design algorithm is used to adjust the shape of a conducting solid body that is subjected to a surface heat flux and cooled simultaneously by free convection and radiation in order to reduce the overall thermal resistance. Parametric simulations are carried out over a range of domain dimensions and emissivity values to determine the sensitivity of (i) the predicted solid shape and (ii) the overall thermal resistance to the relative strength of convection or radiation. Results show that, for the conditions considered, surface radiation has a significant influence on the predicted optimal solid geometry and overall thermal resistance.
Microstructural Evaluation of Alloy 800H After SCWL Exposure
Authors: Marušáková D. , Aparicio C. , Fukač R. 
Published: January 2021

Abstract
Alloy 800H is a candidate material for supercritical water-cooled reactors (SCWR), specifically for in-core components in Canadian-type SCWR, that will operate at a pressure of 25 MPa and a core temperature from 350 °C to 625 °C. To evaluate this, several exposures to supercritical water took place at 395 °C and 25 MPa in a supercritical water loop (SCWL). The duration of each exposure was 500, 150, and 1000 h. Scanning electron microscopy (SEM) with electron backscatter diffraction (EBSD), in combination with Raman spectroscopy (RS) and X-ray diffraction (XRD), was used to evaluate the microstructure of alloy 800H after the exposures to supercritical water. All these methods confirmed the presence of magnetite and trevorite/chromite crystals, with a thickness of less than 1 μm, on the surface after each exposure. No significant change occurred after the second and third exposures. The matrix crystallography did not change during the exposures and demonstrated grain twinning with a grain size of 100–400 μm.
Comparison Between the Effects of Zero and Non-Zero Flow Acceleration on the Entropy Wave Decay: An Experimental Study
Authors: Hosseinalipour S. M. , Rahmani E. , Fattahi A. 
Published: January 2021

Abstract
Entropy wave, as the convecting hot spot, is one of the sources of combustion instabilities, which is less explored through the literature. Convecting in a highly turbulent flow of a combustor, entropy waves may experience some levels of dissipation and deformation. In spite of some earlier investigations in the zero acceleration flow, the extent of the wave decay has not been clear yet. Further, there exist no results upon the wave decay in non-zero accelerated flows. This is of crucial importance, as the wave passes through the end nozzle of the combustor or gas turbine stages. The current experiment, therefore, compares the wave decay in both flow of constant and variable bulk velocity, meaning, respectively, a uniform pipe and a convergent nozzle. The comparison will aid the theoretical models to reduce complexity by simplifying the relations of non-zero acceleration flow to those of no acceleration, as followed by the earlier effective-length method. Reynolds number and inlet turbulence intensity are considered as the governing hydrodynamic parameters for both investigated flows. The entropy wave is generated by an electrical heater module and detected using fast-response thermocouples. The results show that the entropy wave variation is point-wise and frequency-dependent. The accelerated flow of the nozzle is generally found to be more dissipative in comparison with the zero acceleration flow.
Numerical Assessment of Density Ratio and Mainstream Turbulence Effects on Leading-Edge Film Cooling: Heat and Mass Transfer Methods
Authors: Ravelli S. , Abdeh H. , Barigozzi G. 
Published: January 2021

Abstract
Within the context of leading-edge film cooling in a high-pressure turbine vane, the present study is a step forward toward modeling showerhead performance for a baseline geometry (namely four staggered rows of cylindrical holes) at engine-like conditions, starting from a previous investigation, at low-speed flow (exit isentropic Mach number of Ma2is = 0.2), low inlet turbulence intensity of Tu1 = 1.6%, and density ratio of DR ∼ 1. Those operating conditions, dictated by experimental constraints, were essential to validate results from delayed detached-eddy simulation (DDES) against off-the-wall measurements of velocity, vorticity, and turbulent fluctuations, for the coolant-to-mainstream blowing ratio of BR = 3 (momentum flux ratio of I = 9). Here, the potential of DDES is exploited to predict the aerothermal features of the flow in the leading-edge region in the presence of a larger density ratio (DR ∼ 1.5) and turbulent mainstream (Tu1 = 13%), while matching either BR or I. The experimental database contains surface measurements of film cooling adiabatic effectiveness (η), obtained by using the pressure-sensitive paint (PSP) technique. DDES predictions of η were computed using the species transport model (i.e., mass transfer), for comparison against the conventional thermal method, based on creating a temperature differential between the mainstream and the coolant (i.e., heat transfer). The simulated film cooling performance was found to depend on the method used, thus suggesting that other parameters than DR, BR, I, and Tu1 should be taken into account when the goal is matching engine-like conditions.
A scanner for in situ X-ray radiography of large paintings: the case of “Paolo and Francesca” by G. Previati
Authors: Impallaria Anna , Petrucci Ferruccio , Chiozzi Stefano , Evangelisti Federico , Squerzanti Stefano 
Published: January 2021

AbstractA scanner for digital radiography of large paintings has been designed and developed, aimed to in situ performances. We report here the application to “Paolo and Francesca” ($$260 \times 230 \,\hbox {cm}^{2}$$

260
×
230

cm
2

), masterpiece by the Italian divisionist painter Gaetano Previati (1909). The scanner has given the whole radiography in 1137 X-ray shots, which were corrected for X-ray inhomogeneities and finally processed, minimizing the visual impact of the frame structure. The original version of the painting has been brought to the light, and it appears to be a further step in the evolution of the theme frequently experienced by the artist.
Optimising Hand Surgery during COVID-19 Pandemic
Authors: Saha Shivangi , Dash Suvashis , Ansari Mohammed Tahir , Bichupuriya Ashish Dhanraj , Gupta Amit Kumar , Singhal Maneesh 
Published: January 2021

Background: With the emergence of the COVID-19 pandemic, most health-care personnel and resources are redirected to prioritize care for seriously-ill COVID patients. This situation may poorly impact our capacity to care for critically injured patients. We need to devise a strategy to provide rational and essential care to hand trauma victims whilst the access to theatres and anaesthetic support is limited. Our center is a level 1 trauma center, where the pandemic preparedness required reorganization of the trauma services. We aim to summarise the clinical profile and management of these patients and highlight, how we modified our practice to optimize their care. Methods: This is a single-centre retrospective observational study of all patients with hand injuries visiting the Department of Plastic Surgery from 22nd March to 31st May 2020. Patient characteristics, management details, and outcomes were analysed. Results: A total of 102 hand injuries were encountered. Five patients were COVID-19 positive. The mean age was 28.9 ± 14.8 years and eighty-two (80.4%) were males. Thirty-one injuries involved fractures/dislocations, of which 23 (74.2%) were managed non-operatively. Seventy-five (73.5%) patients underwent wound wash or procedure under local anaesthetic and were discharged as soon as they were comfortable. Seventeen cases performed under brachial-plexus block, were discharged within 24 hours except four cases of finger replantation/ revascularisation and one flap cover which were discharged after monitoring for four days. At mean follow-up of 54.4 ± 21.8 days, the rates of early complication and loss to follow-up were 6.9% and 12.7% respectively. Conclusions: Essential trauma care needs to continue keeping in mind, rational use of resources while ensuring safety of the patients and health-care professionals. We need to be flexible and dynamic in our approach, by utilising teleconsultation, non-operative management, and regional anaesthesia wherever feasible.
The Malay Version of the Michigan Hand Outcomes Questionnaire: Cross-Cultural Adaptation, Validation and Reliability Testing
Authors: Lye Jun Xiong , Kow Ren Yi , Ismail Raffael , Khalid Kamarul Ariffin 
Published: January 2021

Background: The Michigan Hand Outcomes Questionnaire (MHQ), a self-reported questionnaire for patients with hand disorders, has been widely used globally. It has been cross-culturally adapted into different languages across all continents. Aims of this study were to translate the MHQ into Malay language and to evaluate its reliability and validity compared with Disabilities of the Arm, Shoulder and Hand (DASH) questionnaire in a Malay-speaking population. Methods: The MHQ was cross-culturally adapted into a Malay version based on the guidelines. A pre-testing involving thirty patients with hand disorders was performed to assess whether it was comprehensible to the target population. One hundred patients with hand disorders were recruited in this study to answer the MHQ and DASH questionnaires. The MHQ was tested twice with an interval of two weeks in between. Statistical analysis was performed to assess the reproducibility and internal consistency via the test-retest method and Cronbach’s alpha calculation, respectively. The association between MHQ and DASH questionnaire was assessed with Spearman’s correlation calculation. Results: In the pre-testing, twenty-six patients (86.7%) understood all the questions in the Malay version of MHQ. The test-retest analysis showed a good reliability across the duration of two weeks with the intraclass correlation coefficient of all subscales ranging from 0.925 to 0.984. Cronbach’s alpha values of the Malay version MHQ ranged from 0.82 to 0.97, indicating a good internal consistency. Spearman’s correlation factor of the MHQ in comparison with DASH showed a fair to moderately strong correlation with the values ranging from 0.513 to 0.757. Conclusions: The Malay version of MHQ was successfully translated and culturally-adapted with excellent reliability (reproducibility and internal consistency) and good construct validity.
Possible role of traditional systems of medicine to manage covid-19: A review
Authors: Singh Preet Amol , Bajwa Neha , Baldi Ashish 
Published: January 2021

Abstract
The covid-19 pandemic has wreaked havoc on the global healthcare system and the economy. At present, no specific antiviral vaccine is available to combat this contagious virus. Traditional medicine has a long history of playing a significant role in managing several infectious diseases. In this context, scientists around the globe are also exploring various traditional medical interventions to prevent the covid-19 pandemic. In the present work, we summarize available scientific data advocating the use of traditional medicine for preventing covid-19. A robust literature review was conducted using scientific platforms such as Science Direct, National Center for Biotechnology Information (ncbi), Pubmed, Google Scholar, and online database like The Plant List (The Plant List 2013) version 1.1. Special emphasis was given to potential natural antiviral, immuno-modulator plants, and traditional medicines to highlight their possible roles in reducing the disease burden. Immuno-modulator such as Withania somnifera and other natural compounds especially glycyrrhizin, kaempferol, ginsenoside, and lycorine can be leading candidates against sars-CoV-2. Besides the need for rigorous scientific validation of potential herbs and related formulations, their use can be beneficial for the preventive as well as symptomatic treatment of covid-19 infected patients. This work provides a run-through of the experimental therapeutics, preventive and treatment options for covid-19.
Validating Psychometric Properties of a Revised Patient Version of the Combined Assessment of Psychiatric Environments (CAPE)
Authors: Barnes Todd , Phillips Kathryn E. , Bautista Cynthia 
Published: January 2021

BACKGROUND: Measuring patient experience is an essential challenge in the inpatient behavioral health population. AIM: This initiative analyzed the psychometric properties of a revised version of the patient Combined Assessment of Psychiatric Environments (p-CAPE-R) survey. METHODS: The p-CAPE was revised to encompass the interdisciplinary treatment team and implemented on five inpatient psychiatric units at an academic medical center. A psychometric analysis was performed on the p-CAPE-R. RESULTS: Analysis of factor loadings with a large sample ( n = 786) revealed a more coherent item structure under the “staff competency and engagement” and “treatment effectiveness” domains than presented in the original instrument development research. CONCLUSIONS: Although the p-CAPE-R reflects a more useful and psychometrically sound instrument than the original p-CAPE, further analysis and revision to reflect the entire interdisciplinary team is warranted.
Outcomes of tunneled cuffed hemodialysis catheters: An experience from a tertiary care center in Karachi, Pakistan
Authors: Yaqub Sonia , Abdul Razzaque Muhammad Raheel , Aftab Azib , Siddiqui Nadeem Ahmed 
Published: January 2021

Introduction: Tunneled cuffed catheters (TCC) are generally used as a temporary means to provide hemodialysis (HD) until permanent arteriovenous access is established. However, certain complications are associated with use of TCCs such as infections, catheter malfunction/malposition or venous stenosis. Limited data is available on outcomes and long term complications associated with TCCs in our country. The aim of this study was to study the outcomes of TCCs and associated long term complications during the course of its usage. Methods: We retrospectively studied case records of patients who had TCCs placed for HD at our institution, from January 2016 to June 2018. Results: A total of 116 TCCs were placed during the study period. The mean age of the population was 57.09 years; 58.6% were males. The right internal jugular vein (52.6%) was the most common site of TCC insertion followed by the left internal jugular vein (29.3%). Functioning TCCs were successfully removed in almost two-thirds of cases (65.7%) once their permanent access was mature. Development of catheter related blood stream infection (CRBSI) was seen in 22 patients (19.8%) requiring catheter removal in 14 (12.6%) patients. Mechanical complications leading to catheter removal were seen in seven patients (6.3%). The median catheter duration was 62.5 days ranging from 1 to 343 days. Conclusion: TCCs, though associated with complications particularly CRBSI, are a viable option for short- to intermediate-term use for HD till the maturation of permanent arteriovenous access in a limited-resource setting.
Flexible Work Arrangements: A Human Resource Development Tool to Reduce Turnover
Authors: Bontrager Marvin , Clinton M. Suzanne , Tyner Lee 
Published: January 2021

The Problem. An increasing number of organizations are experiencing concerns from employees regarding work-life balance. Organizations that have chosen to implement formal flexible work arrangements (FWAs) have experienced reluctance from their employees to participate. COVID-19 has forced the hand further toward FWAs, and created additional work life balance concerns. The Solution. FWAs present an opportunity for organizations to address work-life balance concerns, especially amid the black swan event of COVID-19. Implementing FWAs provides opportunity for organizations to reduce turnover and facilitate employee development through work life balance programs. The Stakeholders. The informal processes of FWAs should receive due attention by HRD practitioners and scholars alike.
The role of intimate partner violence victimization during pregnancy on maternal postpartum depression in Eastern Ethiopia
Authors: Ashenafi Wondimye , Mengistie Bezatu , Egata Gudina , Berhane Yemane 
Published: January 2021

Background: Intimate partner violence during pregnancy is a strong predictor of maternal postpartum depression. In Ethiopia, evidence on the association of intimate partner violence during pregnancy with postpartum depression is very limited. To design appropriate intervention, it is thus important to understand how postpartum depression varies as a function of the type and severity of intimate partner violence victimization during pregnancy. The aim of this study is to explore the association of different types of intimate partner violence during pregnancy and its severity with postpartum depression in Eastern Ethiopia. Method: A community-based cross-sectional study was conducted from January to October 2018. The study included a sample of 3015 postpartum women residing in Eastern Ethiopia. The cutoff point for postpartum depression was defined as ⩾13 points according to the Edinburgh Postnatal Depression Scale. The prevalence ratio with 95% confidence intervals was calculated, and the association between the main predictor (i.e. intimate partner violence during pregnancy) and the outcome variable (postpartum depression) was determined using log binomial regression model. Results: 16.3% (95% confidence interval: 14.9–17.7) of women experienced postpartum depression. After controlling potential confounding factors, the prevalence of postpartum depression among women exposed to severe physical intimate partner violence during pregnancy was 1.98 times higher as compared to those not exposed to physical intimate partner violence during pregnancy (adjusted prevalence ratio = 1.98; 95% confidence interval: 1.53–2.54). Exposure to psychological intimate partner violence during pregnancy was found to increase the prevalence of postpartum depression by 1.79 as compared to non-exposure to psychological intimate partner violence during pregnancy (adjusted prevalence ratio = 1.79; 95% confidence interval: 1.48–2.18). Conclusion: The study provides evidence that psychological and severe physical intimate partner violence during pregnancy were significantly associated with maternal postpartum depression. Screening of pregnant women for intimate partner violence and providing them the necessary support can minimize the risk to postpartum depression.
Remote Evaluation of a Wireless Ultrasound Probe
Authors: Merton Daniel A. , Nair Shobana , Gaev Jonathan A. 
Published: January 2021

Objective: To determine whether an evaluation of a wireless ultrasound transducer could be completed remotely. Materials and Methods: Video conferencing was used for communication between a sonographer and a minimally trained operator to allow evaluation of a flat linear array transducer that communicated via Wi-Fi with a smartphone and the probe vendor’s software. A tissue-mimicking phantom was used for quantitative testing, while scanning human models allowed qualitative assessments. Video conferencing using a tablet camera directed at the smartphone screen or transducer allowed the sonographer to view images, and guide the operator on probe positioning, and image optimization techniques. Results: All tests were completed during three 60-minute video conferences. Assessments of models were more challenging than tests using the phantom. The glare from ambient lighting sometimes made it difficult to view the smartphone screen. A connectivity limitation, which has since been resolved, prevented simultaneous use of video conferencing and the transducer software on the smartphone. Conclusion: This study confirmed that an evaluation of a wireless ultrasound transducer can be successfully performed remotely.
MEG-PLAN: a clinical and technical protocol for obtaining magnetoencephalography data in minimally verbal or nonverbal children who have autism spectrum disorder
Authors: Kuschner Emily S. , Kim Mina , Bloy Luke , Dipiero Marissa , Edgar J. Christopher , Roberts Timothy P. L. 
Published: January 2021

AbstractBackgroundNeuroimaging research on individuals who have autism spectrum disorder (ASD) has historically been limited primarily to those with age-appropriate cognitive and language performance. Children with limited abilities are frequently excluded from such neuroscience research given anticipated barriers like tolerating the loud sounds associated with magnetic resonance imaging and remaining still during data collection. To better understand brain function across the full range of ASD there is a need to (1) include individuals with limited cognitive and language performance in neuroimaging research (non-sedated, awake) and (2) improve data quality across the performance range. The purpose of this study was to develop, implement, and test the feasibility of a clinical/behavioral and technical protocol for obtaining magnetoencephalography (MEG) data. Participants were 38 children with ASD (8–12 years) meeting the study definition of minimally verbal/nonverbal language. MEG data were obtained during a passive pure-tone auditory task.ResultsBased on stakeholder feedback, theMEG Protocol for Low-language/cognitive Ability Neuroimaging(MEG-PLAN) was developed, integrating clinical/behavioral and technical components to be implemented by an interdisciplinary team (clinicians, behavior specialists, scientists, and technologists). Using MEG-PLAN, a 74% success rate was achieved for acquiring MEG data, with a 71% success rate for evaluable and analyzable data. Exploratory analyses suggested nonverbal IQ and adaptive skills were related to reaching the point of acquirable data. No differences in group characteristics were observed between those with acquirable versus evaluable/analyzable data. Examination of data quality (evaluable trial count) was acceptable. Moreover, results were reproducible, with high intraclass correlation coefficients for pure-tone auditory latency.ConclusionsChildren who have ASD who are minimally verbal/nonverbal, and often have co-occurring cognitive impairments, can be effectively and comfortably supported to complete an electrophysiological exam that yields valid and reproducible results. MEG-PLAN is a protocol that can be disseminated and implemented across research teams and adapted across technologies and neurodevelopmental disorders to collect electrophysiology and neuroimaging data in previously understudied groups of individuals.