bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nonlinear creep properties and time-to-failure prediction of sandstone under saturated and dry conditions
Authors: Ye Chunfeng , Xie Heping , Wu Fei , Li Cunbao 
Published: July 2022

Abstract
The moisture content of rock significantly influences its time-dependent deformation behavior. This paper studied the different properties of the creep behavior of sandstone under saturated and dry conditions and their impact on the time-to-failure(TTF) through multistage creep tests. The results show that under an identical driving stress ratio (not identical creep stress), the dry specimens' creep strain and steady-state creep rate are relatively higher than those of the saturated ones. Nevertheless, the water-saturated specimen has a shorter creep strain path and TTF due to the softening effect of water. It is evident that in terms of creep deformation and creep rate, the impact of creep stress is much more significant than that of moisture content; however, in terms of creep TTF, the moisture content of sandstone plays a dominant role. The rationality of the generalized Kelvin, Burgers, and power-law creep models was evaluated based on the experimental data. The power-law model was found to be capable of fitting the test data, and better predicting sandstone creep deformation than other two models. Finally, based on the assumption of a critical strain value εcri, a method for predicting creep TTF from limited laboratory data was proposed, providing a foundation for incorporating TTF prediction into continuum numerical simulations.
Electrospun hydrophobic nanofiber films from biodegradable zein and curcumin with improved tensile strength for air filtration
Authors: Xie Shiyu , Xu Bo , Yuan Li , Zhao Yaxin , Ma Na , Wang Yaomin , Liu Dagang , Xiang Aimin , Ouyang Yuge , tian Huafeng 
Published: July 2022

Abstract
Zein as a natural protein had been widely used in various fields due to its biodegradability and biocompatibility. However, its sensitivity to humidity and poor mechanical performance limited its application in practice. In this study, zein-based composite nanofibers loaded with curcumin were prepared by electrospinning assisted with polyvinyl alcohol (PVA). The filtration efficiency of the modified nanofibers to the particles with diameters larger than 0.5 µm was all above 98%. The loaded curcumin interacted with protein molecular chains to form a network structure within tightly connected nanofibers, which exhibited excellent moisture resistance and good adhesion to cellulose paper towels used as air filter substrates. Meanwhile, its tensile strength had also been enhanced vastly to 0.72 MPa compared with the initial tensile strength of 0.21 MPa. This study provides a new electrospinning strategy for the preparation of zein-based composite nanofibers that can be widely utilized in air filtration with high moisture resistance.
Guillain-Barré Syndrome in Association with COVID-19 Vaccination: A Systematic Review
Authors: Abolmaali Meysam , Rezania Fatemeh , Behnagh Arman Karimi , Hamidabad Negin Mahmoudi , Gorji Ali , Mirzaasgari Zahra 
Published: July 2022

Abstract
Since the beginning of worldwide vaccination against coronavirus disease 2019 (COVID-19), studies have reported a possible association between vaccination and Guillain-Barré syndrome (GBS). In this regard, we conducted a systematic review assessing different demographic, clinical, and neurophysiological aspects of patients with GBS following immunization with COVID-19 vaccines. A comprehensive search of PubMed, Web of Science, Scopus, and Google Scholar was performed. Articles in English between January 2020 and November 2021 were included. Data on demographics, clinical characteristics, vaccines information, treatment approaches, and outcomes were extracted. The data of a total of 88 patients out of 41 studies was included. The mean age of patients was 58.7 ± 16.6 years and 55 cases (62.5%) were male. AstraZeneca was the most-reported vaccine associated with GBS with 52 cases (59.1%) followed by Pfizer with 20 cases (22.7%). GBS occurred after the first dose of vaccination in 70 cases (79.5%). The mean time interval between vaccination and symptom onset was 13.9 ± 7.4 days. Limb weakness (47.7%), sensory disturbance (38.6%), and facial weakness (27.3%) were the most common reported symptoms, respectively. Albuminocytologic dissociation was seen in 65% of patients who underwent lumbar puncture (n = 65). Acute inflammatory demyelinating polyradiculopathy was the most common GBS subtype, which was reported in 38 patients (43.2%). While one-fifth of patients underwent intubation (n = 17), a favorable outcome was achieved in the majority of subjects (n = 46, 63%). Overall, a small rise in GBS incidence, following various COVID-19 vaccines, was observed. Notably, 85% of affected individuals experienced at least a partial recovery.
Malware Classification Approaches Utilizing Binary and Text Embedding of Permissions
Authors: Zyout Mo'ath , Shatnawi Raed , Najadat Hassan 
Published: July 2022

Abstract
The development of mobile applications is rapidly increasing with the advances in smartphone technology. These applications are intended to assist mobile users in accomplishing various daily tasks including e-commerce and online services. Many mobile applications were also developed to attack smartphone users. Hence, new challenges have been found such as the difficulty to distinguish between benign and malicious malware categories.In this paper, two approaches for classifying malware applications are presented, including Conv1d (Conventional one dimension) and LSTM (Long short Time Memory). The proposed approaches have modeled and solved the malware classification problem using the natural language processing method. Two encoding techniques, binary and text encoding, were conducted on android permissions as a preprocessing phase. In addition, two other classifiers, the Support Vector Machine (SVM) and K-Nearest Neighbor(KNN) were also reported. The two main approaches were evaluated on well-known dataset, the CICMalDroid2020. The Conv1d-approach and LSTM-approach using text encoding achieved the best classification, i.e., high precision and accuracy (98.16\%, 97.72\% and 96.63\%, 96.69\%, respectively). The Conv1d-approach on binary classification has outperformed the LSTM-approach model when compared with Mal-prem and datasets. The Conv1d-approach achieved the best performance, with 99.3\%,99.80\%, 98.90\%, and 98.95\% of accuracy.
Effect of an e-Educational Poster on Improving Knowledge, Attitude, and Practice on Proper Use of Hand Hygiene among School Students
Authors: Weerasinghe Weerasinghe Mudiyanselage 
Published: July 2022

Abstract
Hand hygiene is important to prevent the spread of the COVID-19 virus by contact. It also interrupts the transmission of other viruses and bacteria causing common colds, flu, and pneumonia, thus useful in reducing the general burden of infectious disease. Literature shows that there is inadequate knowledge, attitude, and practice on the proper use of hand hygiene among school students. Therefore knowledge, attitude, and practice on hand hygiene of school students should be improved. Currently, different approaches are used to improve knowledge, attitude, and practice on the proper use of hand hygiene among school students. But e-educational posters are rare and the effect of e- educational posters to improve the knowledge, attitude, and practice of school students on the proper use of hand hygiene has not been studied. Therefore, the main purpose of this study was to determine the effect of an e-educational poster on improving the knowledge, attitude, and practice of the proper use of hand hygiene among school students. An interventional and prospective study was conducted on advanced-level students in Dehiovita educational zone, Sri Lanka. Pre group consisted of 405 students prior to the e-educational poster intervention. The Post group consisted of 364 subjects after being educated through e-educational poster intervention on the proper use of hand hygiene. Data analysis was conducted by using SPSS Software version 25. Students of the pre and post-groups were identical in terms of demographic variables; gender (P=0.905), subject stream (P=0.972), and grade (P=0.774). After the educational intervention, a significant improvement was established in the mean score of knowledge (P < 0.05), attitude (P < 0.05), and practice (P < 0.05) of students in the post-group compared with the pre-group. Within each group, there was no difference in knowledge, attitudes and practice attributes due to gender (p>0.05) or grade (p>0.05). However, there was an influence of the educational stream on attitude (P<0.05) and practice (p< 0.05) in pre-group as well as post-group. The influence of the educational stream on knowledge was significant (P<0.05) in the pre-group but not significant (P=0.051) in post group.
Is it COVID-19 vaccine hesitancy or inquisitiveness? Factors associated with COVID-19 vaccine acceptance among the adult population in Northern Uganda. A cross-sectional study.
Authors: Oloya Johnson Nyeko , Baguma Steven , Okot Christopher , Alema Nelson Onira , Acullu Denis , Ochula Denis , Atim Pamela , Olwedo Patrick Odong , Okot Smart Godfrey , Pebolo Francis Pebalo , Oyat Freddy Wathum Drinkwater , Ikoona Eric Nzirakaindi , Aloyo Judith , Kitara David Lagoro 
Published: July 2022

Abstract
Background
When the COVID-19 vaccines arrived in Uganda in early March of 2021, there was a lack of information on the vaccine acceptance in the population due to many factors, mainly misinformation and disinformation circulating in the Ugandan social and mainstream media. This study aimed to determine factors associated with COVID-19 vaccine acceptance among the adult population in northern Uganda.
Methods
We conducted a cross-sectional study among the 723-adult population in northern Uganda. Participants were selected randomly from the nine districts of the Acholi sub-region. Ethical approval was obtained from a local IRB, and SPSS version 20.0 was used for data analysis at a multivariable logistic regression. A p-value less than 0.05 was considered significant.
Results
The most significant finding was that COVID-19 vaccine acceptance among the adult population in northern Uganda was at 580/723(80.22%) and was significantly associated with those with comorbidities AoR = 0.397, 95%CI: 0.233,0.674; p = 0.001; those who agreed that vaccines in health facilities in northern Uganda were safe AoR = 0.724, 95%CI:0.597,0.878;p = 0.001; graduates AoR = 2.781,95%CI:1.278,6.052;p = 0.010; females AoR = 0.616, 95%CI:0.396,0.957; p = 0.031; Catholics AoR = 1.703,95%CI:1.048,2.765;p = 0.032; Baganda tribe AoR = 3.829,95%CI:1.170,7.790;p = 0.026; non-smokers AoR = 7.349,95%CI:1.767,30.566;p = 0.006; ex-smokers AoR = 8.687,95%CI:1.052,71.734;p = 0.045; Agago district AoR = 2.950,95%CI: 1.118,7.789; p = 0.029, and Lamwo district AoR = 2.781, 95%CI:1.278,6.052; p = 0.010.
Conclusion
COVID-19 vaccine acceptance among the study population was encouragingly high despite the disinformation and misinformation in the Ugandan media. The independent determinants of COVID-19 vaccine acceptance were among females, those who agreed that vaccines in health facilities were safe, those with comorbidities, graduates, Catholics, Baganda tribe, ex-smokers and non-smokers, and participants from Agago and Lamwo districts. The fear of contracting the coronavirus and the fear of death if not vaccinated contributed significantly to the COVID-19 vaccine acceptance in northern Uganda. There is a need for health managers to engage, sensitize and mobilize the population on the COVID-19 vaccine and vaccination using the VHTs and the catholic church structures, which remain critically important for the vaccination campaign if the high COVID-19 vaccine acceptance in the sub-region is to be maintained or improved.
Telehealth for Opioid Use Disorder: One Year Retention during the US COVID-19 Pandemic
Authors: Martin Stephen , Smith Alyson , Kahn Nathan , Strong Stephanie 
Published: July 2022

Abstract
Objective: To determine retention in care for opioid use disorder when treated solely via telehealth with a harm reduction, low-threshold model.
Methods: Retrospective cohort analysis of aggregated, anonymized data from 991 patients in telehealth-based buprenorphine treatment. The cohort consisted of patients with commercial or governmental insurance who enrolled between May 17, 2019 andSeptember 28, 2021. Analysis was extended to a maximum of one year for each patient.
Results: At one year, retention in care was 55% overall. When analyzed separately, retention at one year was 62% for patients with commercial insurance and 53% for those with governmental insurance.
Conclusions: Telehealth-based treatment of opioid use disorder can achieve retention in care for patients—with governmental or commercial insurance—that is superior to inperson treatment as usual.
Policy implications: Telehealth for opioid use disorder can be effective for patients over a range of incomes. Regulatory action allowing telehealth-only care
WITHDRAWN: Effects of different combustion factors on the heat transfer characteristics of microchannel reactors for hydrogen production
Authors: Chen Junjie 
Published: July 2022

Abstract
Purified hydrogen is an important fuel source for many energy conversion devices. Methanol steam reforming catalysts are typically low temperature shift catalysts that have copper oxide as a primary active component. Although effective at reforming methanol and water into a reformate stream containing hydrogen gas, low temperature shift catalysts are relatively quickly deactivated during use as a steam reforming catalyst. This study relates to a thermochemical process for producing hydrogen by the catalytic endothermic reaction of methanol with steam in a thermally integrated microchannel reforming reactor. Computational fluid dynamics simulations are conducted to better understand the consumption, generation, and exchange of thermal energy between endothermic and exothermic processes in the reactor. The effects of different combustion factors on heat transfer characteristics and reactor performance are investigated. The results indicate that microchannel designs offer advantages for a compact reactor with excellent thermal control. Combustion makes it easier to tailor axial heat flux distribution to minimize entropy production or energy loss and, thus, making it more efficient. The inlet velocity of the mixture is a critical combustion factor in assuring flame stability within the system. There is a narrow range of inlet velocities that permit sustained combustion within the system. Fast flows can cause blowout and slow flows can cause extinction. There exists an optimum inlet velocity for greatest flame stability. The thermal conductivity of the system walls plays a vital role in flame stability. Reaction heat flux profiles are considerably affected by channel dimensions. The peak reaction heat flux increases with the channel dimensions while maintaining the flow rates. Design recommendations are made to improve thermal performance for the reactor.
Socio-ecological contagion in Veganville
Authors: Elliot Thomas 
Published: July 2022

Abstract
In order to meet the 2015 Paris Agreement for 1.5°C global warming, per capita emissions need to come down to 2.9 tonnes by 2030. Food systems are known to be a significant source of an individual’s carbon footprint and demands attention in sustainability management. The objective of this research is to conceptualise and define an intersection between contagion theory and socio-ecological systems models. This is achieved using a population dynamics model between two groups characterised by a distinct food regime: omnivores and vegans. The greenhouse gas emissions of each food regime is used to estimate the city’s changing carbon foodprint as the food regimes shift by social contagion. Social contagion is identified as a catalyst for social tipping points, and emission pathways are explored with a variety of different contagion variables to test sensitivity towards a tipping point. The main finding is that the urban carbon foodprint can be reduced significantly with widespread adoption of veganism, but that the foodprint reaches a minimum at 1.97 tonnes CO2-equivalent per capita. This demonstrates the need to embed food demand in urban climate governance such as nudging towards plant-based food alternatives. Nudging is discussed as a lever of ecological importance to social contagion. Lastly, socio-ecological contagion is defined as the interactions between social contagion and damage done to ecological systems to measure peer-to-peer spread of environmental stewardship agendas, such as the journey to Veganville.
Technological support of digital production when processing parts using a ball-rod hardener
Authors: Tamarkin M. A. , Tishchenko E. E. , Tishchenko R. G. 
Published: July 2022

In this work, a module of an automated design system for machining using a multi-contact vibrating impact tool, namely a ball-rod hardener, was developed. The technological process of machining using such a hardener was studied. The performance and production cost of machining expressed as the duration and cost of achieving the specified hardening parameters were used to assess the efficiency. The specified geometric, physical and mechanical parameters of the surface layer of processed parts were used as restrictive functions. Residual stresses in samples were determined by Davydenko’s method. The Microsoft Visual Studio software and the C# programming language were used to automate process design. The studies established that the quality of the surface layer of parts is influenced by the main technological parameters (the impact energy of the indenter, the number of rods and grinding radius and tension in processing). The adequate theoretical models of developing various quality parameters of the surface layer of machined parts and processing time were obtained from the theoretical studies of the machining process using a ball-rod hardener. The obtained dependence was subjected to a comprehensive verification under the operating conditions at PJSC “Rostvertol” (Rostov-on-Don). Residual stresses in the surface layer of the BRH machined parts were measured using the ASCON-3-KI automated test stand produced by the Kazan Aviation Institute. The discrepancy between the theoretical and experimental results of the machining process was less than 15 %. The adequacy of the theoretical formulas was assessed by Fisher’s criterion. Based on the research findings, an algorithm and method of designing rational parameters for machining parts of complex geometry using a ball-rod hardener were developed. Using this software for the automated design of technological processes allowed the time of manufacturing preparation to be reduced and the stable quality of machined parts to be ensured. This offers manufacturing preparation in a digital production environment and ensures a significant increase in the useful life of manufactured products.
Determination of heat-transfer coefficients in multi-vortex heat-mass-exchange apparatus
Authors: Dmitriev A. V. , Madyshev I. N. , Galimova A. T. , Sakhibgareev N. F. , Badretdinova G. R. 
Published: July 2022

In this work, heat transfer coefficients from the working surfaces of a multi-vortex heat-and-mass exchange apparatus developed by the authors are determined along with dimensionless equations for calculating the heat transfer coefficients from the inner wall of a housing and bottom when generating. Numerical modelling is carried out using the ANSYS Fluent software package. When determining the velocity profile of a fluid in order to calculate the coefficient of heat transfer, the SST k-ω turbulence model is used. This allows for an adequate convergence in near-wall fluid and gas flow areas when simulating flows in similar constructions used, for example, to classify finely dispersed bulk solids. Dimensionless equations are obtained that relate the Nusselt number to the Reynolds and Prandtl numbers. Relationships are obtained for the increase in the heat transfer intensity as a function of the Reynolds number. It is established that the intensity of heat transfer from the inner wall in the multi-vortex apparatus exceeds the heat transfer from the bottom by 12.7–15.8 % depending on the Reynolds number. The values of heat transfer coefficients at the inner wall of the proposed apparatus can reach 14747 W/(m2 ∙ K) at an average fluid flow rate of 1 m/s. The proposed multi-vortex heat-exchange apparatus ensures swirling gas or fluid flow in the annular gap between the branch pipe and unit housing to provide high heat transfer coefficients and, hence, high intensity of heat transfer, especially through the wall of the contact stage. The numerical studies demonstrate the possibility of achieving high values of specific heat flux through the wall of the contact stage, which enables the most efficient use of the apparatus in the processes associated with the additional heat supply or removal from the contact stage through its external.
Treatment experience of post-COVID cognitive impairment (clinical observation)
Authors: Zhitkova Yu. V. , Khasanova D. R. 
Published: July 2022

Post-Cognitive Impairment, including in the young population, is an urgent medical and social problem. It is known that COVID-19, even in the absence of direct brain damage associated with covid-associated stroke or encephalitis, regardless of the severity of the infection during the acute period and the age of patients, can cause long-term and maladaptive cognitive impairment. The pathogenesis of these disorders is complex, and it is not completely clear today and continues to be actively studied. There is also no standardized diagnostic and therapeutic approach in the management of patients with post-COVID cognitive impairment. The presented clinical observation demonstrates the experience of treating cognitive impairment after COVID-19 in a young patient using the available knowledge of pathogenesis. A review of modern publications on the problem of post-COVID cognitive impairment was carried out. Based on the available literature data, the role of various pathogenetic factors in the development of post-covid cognitive impairment in the presented patient is discussed. Based on a specific clinical example, the rationale for the choice of treatment strategies and the need to further increase knowledge about the postCOVID syndrome, conduct future research in the field of pathogenesis, diagnosis and treatment of post-COVID cognitive impairment, which will create an evidence base for the development of clinical recommendations, is given.