bluuebunny/crossref_metadata_2025_split huggingface dataset:
Health care providers’ awareness of breastfeeding practice recommendations during COVID-19 pandemic and associated factors in Northwest Ethiopia, 2021: A multicenter study
Authors: Kebede Azmeraw Ambachew , Taye Birhan Tsegaw , Wondie Kindu Yinges , Tiguh Agumas Eskezia , Eriku Getachew Azeze , Mihret Muhabaw Shumye 
Published: December 2021

Background
Prevention of coronavirus disease 2019 (COVID-19) transmission to newborns is one of the basic components of perinatal care in the era of the COVID-19 pandemic. As such, scientific evidence is compulsory for evidence-based practices. However, there was a scarcity of evidence on health care providers’ awareness of breastfeeding practice recommendations during the COVID-19 pandemic in Ethiopia, particularly in the study setting.

Objective
The study aimed at assessing healthcare providers’ awareness of breastfeeding practice recommendations during the COVID-19 pandemic and associated factors among healthcare providers in northwest Ethiopia, 2021.

Methods
A multicenter cross-sectional study was conducted among 405 healthcare providers working in hospitals of Gondar province from November 15, 2020, to March 10, 2021. A simple random sampling technique was employed to select the study subjects. Data were collected via a structured-self-administered questionnaire. EPI INFO version 7.1.2 and SPSS version 25 were used for data entry and analysis respectively. Binary logistic regression analyses were done to identify associated factors and the adjusted odds ratio (AOR) with its 95% confidence interval (CI) at a p-value of <0.05 was used to declare significant association.

Results
The healthcare providers’ awareness of breastfeeding practice recommendations during the COVID-19 pandemic was 40.7% (95% CI: 35.9, 45.6). Working in a tertiary hospital (AOR = 3.69; 95% CI: 2.24, 6.08), using COVID-19 guideline updates (AOR = 3.34; 95% CI: 2.1, 5.3), being trained on COVID-19 (AOR = 2.78; 95% CI: 1.74, 4.47), owning a smartphone and/or a computer (AOR = 2.26; 95% CI: 1.39, 3.68), and perceiving that COVID-19 is dangerous (AOR = 1.78; 95% CI: 1.05, 3.01) were factors positively associated with healthcare providers’ awareness of breastfeeding practice recommendations during the pandemic of COVID-19.

Conclusion
Only two in five healthcare providers were aware of recommendations on breastfeeding practice during the COVID-19 pandemic and related to information of accessibility information on COVID-19. Therefore, expanding COVID-19 related information through the provision of COVID-19 training and guidelines to all levels of hospitals would improve health care providers’ awareness of breastfeeding practice recommendations amid the COVID-19 pandemic.
COVID-19 symptoms at time of testing and association with positivity among outpatients tested for SARS-CoV-2
Authors: Wohl David A. , Barzin Amir H. , Napravnik Sonia , Davy-Mendez Thibaut , Smedberg Jason R. , Thompson Cecilia M. , Ruegsegger Laura , Gilleskie Matt , Weber David J. , Whinna Herbert C. , Miller Melissa B. 
Published: December 2021

Introduction
Symptoms associated with SARS-CoV-2 infection remain incompletely understood, especially among ambulatory, non-hospitalized individuals. With host factors, symptoms predictive of SARS-CoV-2 could be used to guide testing and intervention strategies.

Methods
Between March 16 and September 3, 2020, we examined the characteristics and symptoms reported by individuals presenting to a large outpatient testing program in the Southeastern US for nasopharyngeal SARS-CoV-2 RNA RT-PCR testing. Using self-reported symptoms, demographic characteristics, and exposure and travel histories, we identified the variables associated with testing positive using modified Poisson regression.

Results
Among 20,177 tested individuals, the proportion positive was 9.4% (95% CI, 9.0–9.8) and was higher for men, younger individuals, and racial/ethnic minorities (all P<0.05); the positivity proportion was higher for Hispanics (26.9%; 95% CI. 24.9–29.0) compared to Blacks (8.6%; 95% CI, 7.6–9.7) or Whites (5.8%; 95% CI, 5.4–6.3). Individuals reporting contact with a COVID-19 case had the highest positivity proportion (22.8%; 95% CI, 21.5–24.1). Among the subset of 8,522 symptomatic adults who presented for testing after May 1, when complete symptom assessments were performed, SARS-CoV-2 RNA PCR was detected in 1,116 (13.1%). Of the reported symptoms, loss of taste or smell was most strongly associated with SARS-CoV-2 RNA detection with an adjusted risk ratio of 3.88 (95% CI, 3.46–4.35). The presence of chills, fever, cough, aches, headache, fatigue and nasal congestion also significantly increased the risk of detecting SARS-CoV-2 RNA, while diarrhea or nausea/vomiting, although not uncommon, were significantly more common in those with a negative test result. Symptom combinations were frequent with 67.9% experiencing ≥4 symptoms, including 19.8% with ≥8 symptoms; report of greater than three symptoms increased the risk of SARS-CoV-2 RNA detection.

Conclusions
In a large outpatient population in the Southeastern US, several symptoms, most notably loss of taste or smell, and greater symptom burden were associated with detection of SARS-CoV-2 RNA. Persons of color and those with who were a contact of a COVID-19 case were also more likely to test positive. These findings suggest that, given limited SARS-CoV-2 testing capacity, symptom presentation and host characteristics can be used to guide testing and intervention prioritization.
Assessment of practice of Covid-19 preventive measures and associated factors among residents in Southern, Ethiopia
Authors: Kaso Abdene Weya , Hareru Habtamu Endashaw , Agero Gebi , Ashuro Zemachu 
Published: December 2021

Introduction
Coronavirus (Covid-19) is a respiratory disease mostly affecting old aged and those with comorbidities. Due to resource constraints in developing countries, control of Covid-19 was based on preventive measures. However, there is variation in adherence to these precautionary measures from place to place among communities. Therefore, this study assessed the practice of Covid-19 preventive measures and associated factors among residents of Southern, Ethiopia.

Methods
A community-based cross-sectional study was employed on residents of Southern, Ethiopia. Interviewer administered questionnaire was used to collect data from households through systematic random sampling methods. Data was entered, coded, and analyzed using STATA version 16. Logistic regression analysis was used to explore the association between outcome variables and predictor variables. Finally, the interpretation of Adjusted Odds ratio (AOR) with 95% Confidence Interval (CI) and p-value was done for statistically significant factors of Covid-19 preventive measures practice.

Results
The proportion of residents who had good practice of Covid-19 preventive measures was 31.3% (95% CI: 26.5, 36.1). Out of 364 residents, 264 (72.5%) used facemasks, 218 (59.9%) washed their hands frequently, 167 (45.9%) practiced social distancing, 135 (37.1%) stayed at home, 75 (18.1%) avoided handshaking and 228 (62.6%) used hand sanitizer. Following government directions (AOR = 225; 95% CI: 68.6, 738), good knowledge about Covid-19 (AOR = 3.47; 95% CI: 1.12, 10.73), having access to water supply (AOR = 2.92; 95% CI: 1.05, 8.18), belief towards protectiveness of preventive measure (AOR = 3.53; 95% CI: 1.08, 11.61) and chronic illness (AOR = 5.09; 95% CI: 1.44, 17.96) were significantly associated with practice of Covid-19 preventive measures.

Conclusion
In this study, the proportion of residents practicing Covid-19 preventive measures was low. Having comorbidity, following government directions, knowledge about Covid-19 and access to water supply were significantly associated with Covid-19 preventive measures practice. Therefore, government and all concerned stakeholders should increase the accessibility of infrastructure and provide continuous awareness creation campaigns regarding Covid-19 mode of transmission, sign and symptom, and protectiveness of Covid-19 preventive measures. Moreover, dissemination of teaching aids using local languages and close monitoring of community compliance to Covid-19 preventive measures is crucial.
Demographic differentials of lung cancer survival in Bangladeshi patients
Authors: Islam Muhammad Rafiqul , Hasan A. T. M. Kamrul , Khatun Nazrina , Ridi Ishrat Nur , Rasheed Md. Mamun Or , Islam Syed Mohammad Ariful , Karim Md Nazmul 
Published: December 2021

Background
Lung cancer is the leading cause of cancer-related mortality worldwide. Demographic differential has been linked with the treatment outcome and survival in recent literature, mostly from the developed world. Considering diversity in population characteristics across income strata, it’s worth assessing the link in low- and middle-income population as well. Current study aimed to assess the association of demographic characteristics with lung cancer survival in Bangladeshi lung cancer patients.

Methods & results
All newly diagnosed primary lung cancer cases attending the national institute of cancer research & Hospital (NICRH), a tertiary cancer care center in Dhaka, Bangladesh between 2018 and 2019 were considered for the study. Demographic information and clinical data were obtained from the patients’ medical records by a trained physician. Survival estimate was generated using the Kaplan-Meier method and compared across demographic and clinicopathological categories using the log-rank test. Hazard ratio and 95% CI for treatment options are generated fitting multivariable Cox proportional hazard regression.
Among 1868 patients, 84.6% were males and 15.4% were females, average (± standard deviation) age at diagnosis was 59.6±10.9 years, only 10.8% had not consumed tobacco of any form. Around two-thirds of the patient had Eastern Cooperative Oncology Group (ECOG) performance score ≥2, 29.5% had at least one comorbidity and 19.4% had metastasis at the time of presentation. Higher survival was associated with institutional education (HR 0.9; 95% CI 0.77, 0.99), and receipt of combined radiotherapy and chemotherapy (HR 0.56; 95% CI 0.46, 0.65; p <0.001). In contrast, lower survival was associated with older age between 60–69 years (HR 1.3; 95% CI 1.3, 1.5;), age ≥ 70 years (HR 1.4; 95% CI 1.1, 1.7), having any comorbidity (HR 1.1; 95% CI 1.0, 1.3), with ECOG score ≥ 3 (HR 1.41; 95% CI 1.01, 1.96) and receipt of radiotherapy treatments only (HR 1.6; 95% CI 1.3, 1.9).

Conclusion
Older age, presence of one or more comorbidity, poorer performance status, and treatment with only RT appeared as a significant predictor of poorer prognosis of lung cancer in Bangladeshi patients. In contrast, having institutional education and treatment with combined Radiotherapy and Chemotherapy appeared as a predictor of a better prognosis. The finding of this study could serve as a basis for future studies inquiring into novel approaches for certain subgroups of patients believed to be challenged in limited resources.
Influência do tipo de substrato dentinário na resistência de união a microtração - estudo “in vitro”
Authors: Burmann Paulo Afonso , Retamoso Luciana Borges , Vizzotto Mariana Boessio , Nascimento Sabrina Almeida do , Sadek Fernanda Tranchesi , Cardoso Paulo Eduardo Capel 
Published: December 2021

Este estudo avaliou a resistência de união entre o conjunto resina composta/adesivo e diferentes tipos de substrato dentinário. Quinze molares humanos extraídos foram divididos em três grupos de acordo com o tipo de dentina: 5 dentes com dentina afetada por cárie (C), 5 restaurados com amálgama (R) e 5 dentes hígidos (H). Todos os dentes tiveram sua superfície oclusal desgastada até expor uma superfície dentinária plana. As diferentes superfícies foram condicionadas com ácido fosfórico a 37% (3M ESPE), seguindo-se a aplicação e fotopolimerização do adesivo Single Bond (3M ESPE) para a imediata inserção de incrementos de 1 mm de resina composta (Z250 – 3M ESPE) até atingir 4 mm de altura. Após 24 horas de armazenagem em água destilada (37ºC), os corpos-de-prova em forma de palito com secção transversal de 1 mm2 de área foram submetidos ao ensaio de microtração (Instron). A análise estatística (ANOVA/Tukey) revelou que o fator substrato interferiu na resistência adesiva (p<0,05), com a dentina hígida (42,0±7,1 MPa a) proporcionando maiores valores que a dentina restaurada (37,1±4,7 MPa b) e que a cariada (37,7±4,8 MPa b).
An Ultra-Fast Digitally Reconstructed Radiograph (DRR) Implementation of the Siddon-Jacobs Algorithm using Parallel Computing: Runtime Improvement of an Intensity-Based 2D/3D Registration
Authors: Alvarez-Gomez Julio C. , Jimenez Palavicini Gerardo , Roth Hubert , Wahrburg Jürgen 
Published: December 2021

Abstract
A key component of an intensity-based 2D/3D registration is the digitally reconstructed radiograph (DRR) module, which creates 2D projections from pre-operative 3D data, e.g., CT and MRI scans. On average, an intensity-based 2D/3D registration requires ten iterations and the rendering of twelve DRR images per iteration. In a typical DRR implementation, the rendering time is about two seconds, and the registration runtime is four minutes. We present an implementation of the Siddon-Jacobs algorithm that uses a novel pixel-step approach to determine the pixel location of the rendering plane. In addition, we calculate the intensity of each pixel in the rendering plane using a parallel computing approach. The DRR rendering time is reduced to 10ms on average so that the registration runtime can be achieved in an average of 4.8 seconds.
Investigating dry electro-chemical polishing of titanium structures
Authors: Simeunovic Sven , Jung Christiane , Mory Dominik , Seiler Daniel , Wild Michael de 
Published: December 2021

Abstract
With the introduction of novel automated polishing methods, more attention has recently been paid to postprocessing methods of metallic implants. One such method is the polishing process known as DryLyte®. The most significant difference to previous electropolishing methods is the use of solid organic polymer particles activated with sulfonic acid acting as the electrolyte. The solid particle electrolyte raises new question in terms of polishing results for small features as well as overall polishing quality of metallic surfaces. The aim of this study was to determine the quality of the polishing process for titanium rods with different initial surface roughness and with tapped holes in three different orientations (0°, 45°, 90°) by subjecting them to the DryLyte® polishing process for 30 min. In addition, the influence of the process parameters voltage and the anodic time T2 during the treatment on the resulting surface quality and the polishing efficiency was determined. In conclusion, the dry electrochemical finishing process has shown great smoothing capabilities for titanium even with small, tapped holes. The Ra values were lowered significantly throughout all titanium samples after 30 min polishing time.
Development of a virtual reality simulation for exposure based addiction therapy
Authors: Rick Faust Moritz Mourice , Hanshans Christian , Bröll Lukas M. , Maisch Bettina 
Published: December 2021

Abstract
After the success of virtual reality (VR) applications in supporting exposure-based and psychoeducational cognitive behavioural therapy for various mental illnesses, the technology is also gaining traction in addiction medicine. This paper will describe the concept behind a custom-developed VR simulation for this application with a particular emphasis on alcohol-related addictive disorders. Using Unreal Engine 4, an exposure simulation and a scenario for learning and applying coping strategies were developed for the Oculus Quest. Because of the common association of supermarkets with the procurement of alcohol among addicts, a small shop was implemented as initial scenario. Since the feeling of presence is an important parameter in the quality assessment of a simulation, the degree of immersion was evaluated in initial practical tests after development. In surveys with ten healthy testers, the majority showed a feeling of immersion. Cybersickness and unrealistic collision physics were identified as disruptive factors to the extent of immersion. This work provides the basis for a novel concept for addiction therapy which focusses on a fusion of playful psychoeducation, adjustable exposure, and the internalization of coping strategies with the help of multisensory biofeedback as well as the documentation of the objective physiological measurements for assessment of therapy success. The aim is to best possible address the specific requirements for clinical and home use in terms of self-containment, immersion, and ease of use. To evaluate and exploit the scientific potential of this concept scientific studies and technical improvements to both simulation and hardware are required.
Forecasting the Future of Healthcare Democratization
Authors: Barbazzeni Beatrice , Fritzsche Holger , Friebe Michael 
Published: December 2021

Abstract
Health longevity, cost reduction, prevention-based healthcare, personalized medicine, predictive diagnostic, transformed care delivery, de-aging, healthy lifestyle trends, and implementation of intelligent technologies should lead to a more democratized (availability for everyone on this planet) healthcare provision. Forecasting the future of healthcare and health policy certainly is imperfect but nevertheless a precious scientific approach that can lead to novel innovative approaches. In the last decade, the healthcare system faced several challenges, including the significant increase of care costs, demographic changes towards the older population, inability to prevent and overcome pandemics, increased chronic and non-communicable diseases, or resistance to adopting emerging technologies. The need to shift the focus from sickness to health becomes a critical mission. We developed a lecture titled "Healthtech Innovation Design" for graduate students from medicine, biomedical engineering, neuroscience and software engineering. The lecture's goal is to teach innovation methodologies, exponential technologies and methods to achieve healthcare democratization. A critical component is to promote initiatives with global teams focused on the future of health. The educational and initiative programs were impactful in growing interest toward innovation, focusing on disruption and healthcare democratization. Participants awareness towards the main issues and challenges was raised. Interdisciplinary participation was qualitatively processed to generate a holistic vision toward innovation. Through embracing digitalization to a patient-centric approach, affordable care services, and the expansion of precision medicine, the entire healthcare organization and management will likely undergo a worldwide change. Notably, digital technologies, the leverage of artificial intelligence and empathy would satisfy unmet clinical needs. With a future-oriented statement, the forecast of healthcare becomes more imaginable, in which democratization will allow the affordability of services in different countries and economic status.
Assuring Quality of Scaffolds in Musculoskeletal Tissue Engineering
Authors: Becker Alexander , Fricke Dierk , Roth Bernhard , Glasmacher Birgit 
Published: December 2021

Abstract
In order to achieve the high quality required in medical products, reliable characterization methods and quality management systems are necessary. In the field of musculoskeletal Tissue Engineering (mTE), electrospinning is utilized to manufacture fibre scaffolds as implant material. Depending on the application, in this case the regeneration of tendon-bone junctions, properties like the degree of fibre orientation, homogeneity of fibre throughout the scaffold and reaction to external mechanical load are of particular importance. Currently, destructive methods, like scanning electron microscopy (SEM), are widely used to determine these properties. In addition to the destruction of the samples, these methods often only allow the investigation of very small sections. In this study, we present two new methods for the fast, non-destructive and contactless characterization of electrospun fibre scaffolds for mTE. These methods are based on Transillumination Imaging (TI) and Mueller Matrix Polarimetry (MMP), utilizing low-power laser sources or LED light sources, respectively, to determine the relative homogeneity (TI) and the degree of fibre orientation (MMP) in electrospun fibre scaffolds.
Haptic User Interface of a Cable-Driven Input Device to Control the End Effector of a Surgical Telemanipulation System
Authors: Schäfer Max B. , Al-Abboodi Bha A. , Pott Peter P. 
Published: December 2021

Abstract
In robotic telemanipulation for minimally-invasive surgery, lack of haptic sensation and non-congruent movement of input device and manipulator are major drawbacks. Input devices based on cable-driven parallel mechanisms have the potential to be a stiff alternative to input devices based on rigid parallel or serial kinematics by offering low inertia and a scalable workspace. In this paper, the haptic user interface of a cable-driven input device and its technical specifications are presented and assessed. The haptic user interface allows to intuitively control the gripping movement of the manipulator’s end effector by providing a two-finger precision grasp. By design, the interface allows to command input angles between 0° and 45°. Furthermore, interaction forces from the manipulator’s end effector can be displayed to the user’s twofinger grasp in a range from 0 N to 6 N with a frequency bandwidth of 17 Hz.
Concept for parallel placement of flexible needles for Irreversible Electroporation
Authors: Arif Hanbal , Liehr Uwe Bernd , Wendler Johann Jakob , Friebe Michael , Boese Axel 
Published: December 2021

Abstract
Irreversible Electroporation (IRE) is a non-thermal tumor ablation treatment applicable for prostate cancer. IRE uses ultra-short but strong electrical pulses to destroy cancer cells nonthermally [1]. Clinically available IRE therapy requires two or more needle electrodes placed around the target tissue to apply the electric fields. A pre-requirement to achieve successful and effective ablation is an accurate and parallel needle placement to cover the tumor zone. Differences in tissue density, organ surface curvature as well as organ and patient motion in combination with long and highly flexible needle electrodes causes’ difficulties to achieve the desired target accuracy during needle placement process. We propose a concept of a shooting mechanism in combination with a grid template support to improve the parallel needle placement process for prostate cancer treatment. Instead of conventionally inserting the needle in the body by hand, it can be placed with high speed using a shooting device setup, that works similar like a biopsy gun.