bluuebunny/crossref_metadata_2025 huggingface dataset:
Impacto psicossocial na reabilitação estética anterior com resina composta direta: relato de caso
Authors: Bento Matheus de Jesus , Bento Victor Augusto Alves , Castillo Daisilene Baena , Pereira Fabrícia Araújo
Published: February 2021

Devido a crescente valorização da harmonização facial, faz grande a procura de tratamentos estéticos nas clínicas odontológicas, devido aos fatores que interferem na harmonia do sorriso. Com isso, cada vez mais se torna um desafio satisfazer as exigências estéticas de cada paciente. Portanto, o objetivo deste trabalho foi relatar o impacto psicossocial em um caso clínico que foi realizado reabilitação estética anterior com resina composta direta. O paciente, gênero masculino, 32 anos, compareceu à clínica de Dentística da Faculdade de Odontologia da Universidade Federal de Mato Grosso do Sul (FAODO-UFMS) em 2019, queixando-se da aparência do seu sorriso devido ao “espaço” que havia entre os dentes e “cor amarelada”. No exame clínico detalhado foi verificado a presença de diastema entre os elementos 11 e 21, devido a desproporção do tamanho dos dentes nessa região. Foi proposto, então, clareamento de consultório combinado com caseiro e realização de facetas diretas de resina composta nos elementos 11,12,13, 21, 22 e 23. Para isso, foi realizado fotografias, enceramento diagnóstico inicial e teste com mock-up. As facetas foram confeccionadas pela técnica estratificada com auxílio de guia de silicone para confecção da face palatina. Foi aplicado o questionário OHIP-14 antes e após o tratamento para analisar a eficácia do tratamento na qualidade de vida do paciente. Concluiu-se o tratamento baseado no clareamento dental seguido por facetas diretas com resina composta foi capaz promover uma melhor qualidade de vida.
STUDYING THE EFFECT OF MILK PROCESSING PRODUCTS ON THE STRUCTURAL-MECHANICAL PROPERTIES OF WHEAT FLOUR DOUGH
Authors: Bilyk Olena , Vasylchenko Tetyana , Kochubei-Lytvynenko Oksana , Bondarenko Yulia , Piddubnyi Volodymyr
Published: February 2021

Dry whey enriched with magnesium and manganese (DW) that contains protein in the amount of 13 %, and a whey protein concentrate (WPC) with a protein content of 65 %, have been chosen as functional bases in the production of complex baking improvers with a targeted effect. When developing a composition of the complex improver, the rational dosage of DW is 2 % by weight of flour, and that of WPC – 3 % by weight of flour. Adding DW and WPC during the kneading of wheat flour dough predetermines a decrease in its gluten content, by 4 % and 6.1 %, respectively, after 20 minutes of the dough rest, and by 7.5 and 10.7 % after two hours of the dough fermentation. This is due to the introduction of lactic acid with milk processing products, which peptizes proteins resulting in that the gluten proteins are partially converted into water-soluble ones. If DW and WPC are included in the dough formulation, there is an increase in the total amount of proteins in it, as well as a change in their fractional composition: the mass fraction of water-soluble and intermediate fractions of proteins increases while the amount of gluten proteins decreases. That confirms a decrease in the amount of gluten washed out from the dough with the addition of DW and WPC. Increasing the mass fraction of water-soluble proteins contributes to the intensification of the fermentation process through the additional nutrition of microflora with nitrogenous substances and an increase in the content of free water in the dough, which predetermines its thinning. It was established that despite the high water absorption capacity of DW and WPC, the water-absorbing ability of the dough that contains them decreases compared to control by 8.4 and 10.7 %, respectively. Studying the dough at the farinograph has shown that in the case of using DW, its stability is somewhat prolonged while in the case of WPC introduction the dough stability is extended by almost 10 minutes, which leads to prolonging the dough kneading. Along with this, in the case of using WPC, there is a rapid descent of the farinogram curve, which could lead to a strong weakening of the dough during fermentation and rest, even though that the thinning after 12 minutes is lower than that of control
ORGANISATIONAL CLIMATE AND JOB SATISFACTION OF FACULTY MEMBERS IN HIGHER EDUCATION:A STUDY ON BODOLAND UNIVERSITY, ASSAM, INDIA
Authors:   Research Scholar, Department of Management, Mizoram University, Aizawl, Mizoram, India., Boro Moneswari
Published: February 2021

Organisational climate is a process of quantifying the culture of an organisation. The word climate usually describes the practices involved in communication, conflict, leadership and rewards. Job satisfaction is the level of gratification a person feels regarding his or her job. This feeling is mainly based on an individuals perception of satisfaction. Organisational climate and job satisfaction are distinct but related constructs, and both appear to influence employees understanding of the work environment and their level of job satisfaction. The present study is undertaken with a view to study the relationship between Organisational climate and Job satisfaction of faculty members and also to examine different dimensions of Organisational climate and Job satisfaction in Bodoland University. For the study, an established assessment instrument on organisational climate is used as organisational climate survey instrument which includes organisational design, communication, leadership, teamwork, decision-Making, culture, job satisfaction and motivation (Instrument development by Allen and Mayer, 1991). The survey questionnaire consisted of a series of 35 items which was administrated to selected respondents. The respondents were required to indicate based on a 7 â€“ point scale from strongly disagree to strongly agree. The findings indicate that there is moderate level of relationship between organisational climate and Job satisfaction.
ON THE QUESTION OF THE MAINTENANCE OF LEGALITY AND OFFICIAL DISCIPLINE IN THE ADMINSTRATIVE ACTIVITIES OF THE INTERNAL AFFAIRS OF UZBEKISTAN
Authors:   Head of the Investigation Department at the Office for Coordination of the Activities of the Internal Affairs Directorate of the Sergeli District of Tashkent, Lieutenant Colonel., Turayevich Berdiev Alisher
Published: February 2021

The article analyzes the current national legislation regulating the administrative and legal activities of the internal affairs bodies, provides the opinions of scientists who investigated the problems associated with the definition of legality and official discipline, examines their normative legal concept and features of the content in the administrative and legal activities of the internal affairs bodies.
COMPARATIVE EVALUATION OF PUSH-OUT BOND STRENGTH OF FIBER POST LUTED INSIDE THE ROOT CANAL USING LIGHT CURE FLOWABLE COMPOSITE AND DUAL CURE RESIN - AN INVITRO STUDY
Authors:   Post-Graduate Student, Department of Prosthodontics, Govt. Dental College & Hospital, Srinagar, Jammu & Kashmir, India., Bashir Aamir , Fayaz Adil ,   Post-Graduate Student, Department of Prosthodontics, Govt. Dental College & Hospital, Srinagar, Jammu & Kashmir, India., Kaur Bali Sandeep ,   Professor and Head, Department of Prosthodontics, Govt. Dental College & Hospital, Srinagar, Jammu & Kashmir, India., Nazir Qazi Shazana ,   Associate Professor, Department of Prosthodontics, Govt. Dental College & Hospital, Srinagar, Jammu and Kashmir, India.
Published: February 2021

Aim: The aim of this study was to compare by means of Push-Out test the difference in bond strength of two different luting agents with fibre post, and the effect of anatomical root levels on the bond strength of each cement. Materials and Methods: A total of 40 freshly extracted maxillary central incisor and canine teeth were included in the study. The teeth were divided into two groups of twenty each, and were assigned to Groups A and B according to the luting agent (light cure, dual cure) used to cement the post inside the root canal. After decoronation, 10 mm standardized post spaces were prepared inside each root. Luting of fiber posts was carried out, as per manufacturers recommendations, with the respective luting agents. Each root was embedded in a cuboidal plaster block and sectioning was carried out to obtain three slices of 2.5 mm thickness from the coronal, middle and apical aspect of the root. This was followed by Push-Out testing on a Universal Testing Machine after a storage period of 2 months. The recorded data were subjected to statistical analysis. Results: Significant differences were found in the bond strength of light cure flowable composite and dual cure resin cement (p<.05) at different anatomical root levels. In the inter-group comparison it was found that dual cure presents superior mean bond strength in comparison with light cure composite. Conclusion: It was concluded from this study that dual cure resin cement is the best material for luting fiber post to root canal. The push-out bond strength was lower in the apical third than the coronal third for light activated cements. Also, light cure flowable composite performs better when shorter posts are used.
RARE DISEASE REGISTRIES- PURPOSE, CHALLENGES & SOLUTIONS
Authors:   Doctorate in Health Sciences College of Graduate Health Studies A.T. Still University, Mesa, Arizona, USA., Aziz Maria , J. Khan Azma ,   Clinical Research Coordinator Pri-Med Care/DFW Wound Care Center., Khan Sefia ,   Research Assistant Pri-Med Care/DFW Wound Care Center.
Published: February 2021

Rare diseases are defined, as any condition or disease having a low prevalence in the United States and the European Union. There is a scarcity of relevant knowledge and experience with rare diseases due to an incomplete understanding of the underlying disease mechanisms, relevant clinical endpoints, lack of correct diagnosis in the population. These challenges create a unique need for cooperation and infrastructure. Data registry is a critical tool in building a comprehensive knowledge base for these rare diseases. Our paper will provide the overview of patient registries for rare diseases, current use, limitations, challenges and proposed plan for improvement.
ASSESSMENT OF THE PERFORMANCE OF A BUFFER MANAGEMENT SYSTEM TO IMPROVE HIGH PRIORITY MESSAGE DELIVERY TIME LIMIT
Authors:   Ecole Doctorale Polytechnique de lINP-HB Yamoussoukro, Cote dIvoire., Yao Theophile Gballou ,   Laboratoire de Recherche en Informatique et Telecommunication (LARIT)., Kidjegbo Augustin Toure ,   Ecole Doctorale Polytechnique de lINP-HB Yamoussoukro, Cote dIvoire., Yves Tiecoura ,   Ecole Doctorale Polytechnique de lINP-HB Yamoussoukro, Cote dIvoire.,   Laboratoire de Recherche en Informatique et Telecommunication (LARIT).
Published: February 2021

In vehicular delay-tolerant networks, buffer management systems are developed to improve overall performance. However, these buffer memory management systems cannot simultaneously reduce network overload, reduce high priority message delivery time limit, and improve all priority class message delivery rates. As a result, quality of service is not guaranteed. In this paper, we propose a drop policy based on the constitution of two queues according to message weight, the position of the node in relation to the destination and the comparison of the oldness between the high-priority message and the messages in the low-priority queue. The results of the simulations show that compared to the existing buffer management policy based on time-to-live and priority, our strategy simultaneously reduces network overload, reduces the delivery time limit of high-priority messages and allows for an increase in the delivery rate of messages regardless of their priority.
NITRO-OXIDATION PRODUCTS FROM STRUCTURAL STEELS
Authors:   Candidate of Technical Sciences, Associate Professor, Department of Technological machines and equipment, Karshi Engineering and Economic Institute., Karshievich Eshkabilov Kholikul , Alimardonovich Berdiev Sherzod ,   Researcher, Karshi Engineering and Economic Institute., Olimovna Abdullaeva Asila ,   Researcher, Karshi Engineering and Economic Institute.
Published: February 2021

The article examines the technology of nitro-oxidation, which consists of nitriding in separated ammonia at the first organize and oxidation in water vapor at the second stage of the process, studied the structure and phase composition of the diffusion nitride-oxide layer, providing high physico-mechanical and physicochemical surface characteristics, competitively capable of galvanic strategies of getting a coating, the conceivable outcomes of regulating the structure and phase composition of the nitride-oxide layer are being investigated to obtain a diffusion coating composition with predetermined properties.
TO ACESS LEVEL OF CA 19.9( CARBOHYDRATE ANTIGEN 19.9) & CA125 (CARBOHYDRATE ANTIGEN 125) IN PATIENTS OF CANCER ( OVARIAN, ENDOMETRIAL & PANCREATIC)
Authors:   Assistant Professor Biochemistry, SGRR Medical College & Hospital, Dehradun., Ahsan Farah , Kukreti Sonali ,   Department of Biochemistry, SGRR Medical College & Hospital, Dehradun., Samreen Sumera ,   Department of Biochemistry, SGRR Medical College & Hospital, Dehradun.
Published: February 2021

Purpose: To investigate the diagnostic value of CA 19.9 & CA125 in patients of cancer. Methods: 100 randomly selected patients coming to Medicine & Gynae OPD with symptoms of cancer. Serum was taken and CA19.9 & CA 125 was analyzed by Electrochemiluminescent Immunoassay. Results: It showed serum levels of CA19.9 & CA125 of patient with malignant ovarian, endometriosis & pancreatic tumor significantly higher than the control group. Out of total 50 patients for CA19.9, 45 were females & 5 males. Out of 45 females, 14 females & 3 males have raised value. All 3 males have significantly raised value more than 500 U/ml & All 3 had pancreatic carcinoma. Out of 14 females those had value more than 1000 had features of malignancy whereas rest females of value more than 100 had features of endometriosis. For CA125 total of 50 patients were taken out of which only 10 patients had raised CA125 level. All were females and 60% had value more than cut off that was 35u/ml. Out of the 10 females who had raised CA125, 6 had carcinoma & metastasis & rest 4 had endometriosis.
DEXMEDETOMIDINE IN PARAVERTEBRAL BLOCK FOR BREAST CANCER SURGERIES- A WAY TOWARDS OPIOID FREE ANAESTHESIA
Authors: Verma Nimisha , A.M. Vighnesh , K. Mathur Sharad
Published: February 2021

Introduction:Breast cancer is one of the leading causes of cancer morbidity and mortality in women across the world. One concerning problem that affects breast cancer patients after surgery is pain. Regional anesthesia may reduce cancer propagation by attenuation of the surgical stress response, reduced opioid usage and by the direct protective action of local anaesthetics on cancer cells migration. Therefore regional anesthesia should be considered for all breast cancer surgeries. Aim:The present study was conducted to compare the efficacy of Dexmedetomidine and Fentanyl as an adjunct to 0.5% Ropivacaine in thoracic paravertebral block, along with general anesthesia, in modified radical mastectomy surgeries. Methods: A total of forty patients were included in the study. All patients received the paravertebral block at 3 levels from T2-T4 with 15 ml of drug solution. Perioperative vitals and any complications wererecorded. Postoperative pain was assessed using Numeric Rating Scale (NRS). Results: Statistics did not reveal any significant difference in the degree of intraoperative analgesia, postoperative pain, nausea and vomiting among the two study groups. Conclusion:Among the two drugs, dexmedetomidine offers better hemodynamic stability and hence can be used in place of fentanyl for opioid free anaesthesia management.
FORMING PROFESSIONAL COMPETENCEOF THE FUTURE ENGLISH TEACHERS
Authors:   Doctor of Philosophy in Pedagogical Sciences (PhD),Jizzakh State Pedagogical University., U.U. Jumanazarov
Published: February 2021

The article discusses the factors that shape the active, personal or professional communicative competence of future English teachers, the specific features of each of the models.
Ineffectiveness Of Online Interactive Video Content Developed For Programming Education
Authors: SÖZERİ Mahmut Can , Kert Serhat Bahadir
Published: February 2021

In this study, the effects of interactive video usage in programming education on academic achievement and self-efficacy perception of programming were investigated by taking into account learning styles. The research was patterned according to causal-comparative model, and also, correlation analysis was performed for relationship research. Sixty-one students attending 3rd grade in Computer and Instructional Technology Education (CEIT) of Yıldız Technical University participated in the study. Research data were collected with “Interview form,” “Academic Achievement Test,” “self-efficacy scale for programming,” “learning styles index” and “interactive Video system.” ANCOVA, Correlation and Kruskal Wallis H-test were used in the analysis of the data. The data was analyzed on the computer with the SPSS package program. According to research findings, interactive video monitoring rates did not differ significantly in the students ' academic achievement and self-efficacy perceptions of programming. It was found that students ' learning style preferences had no impact on interactive video viewing rates. The relationship between the change in students ' academic achievement and the change in self-efficacy perception scores related to programming has been examined; as academic achievement increases, it has been concluded that the perception of self-efficacy about programming has fallen.
Application of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor
Authors: Bagastyo Arseto Yekti , Hidayati Arum Sofiana , Herumurti Welly , Nurhayati Ervin
Published: February 2021

Conventional biological treatments used in most Indonesian landfill sites are mostly ineffective in treating stabilized landfill leachates to meet the standard regulation. Thus, a combination of biological and electrochemical process is offered to successfully treat leachates containing a high concentration of organic and nitrogenous compounds. In this study, a moving bed biofilm reactor (MBBR) was applied prior to electrochemical oxidation by using boron-doped diamond (BDD), Ti/IrO2, and Ti/Pt anodes with applied current of 350, 400 and 450 mA. The objectives were to investigate the effect of anode type and the applied current on the removal of organics as well as total nitrogen from the MBBR-treated leachate with electrochemical oxidation. The optimum removal of chemical oxygen demand (COD) observed on the Ti/Pt anode was 78% by applying 400 mA, with an estimated energy of 56.7 Wh g L–1. In the case of Ti/IrO2 and BDD anodes, the optimum removal of COD was 76 and 85% with an energy consumption of 58.9 and 36.9 Wh g L–1, respectively, both achieved at 350 mA. Although all anodes showed less-satisfactory performances for total nitrogen reduction, around 46–95% removal of nitrogenous compounds was achieved by MBBR, with their partial conversion to nitrates.
Biological Degradation of Keratin by Microbial Keratinase for Effective Waste Management and Potent Industrial Applications
Authors: Chaudhary Latafat , Siddiqui Mohammad Haris , Vimal Archana , Bhargava Prachi
Published: February 2021

:

Enzymes are the biocatalysts synthesized by living organisms having high specificity, catalytic activity, and a broad range of applicability. One such biotechnologicaly relevant enzyme is keratinase with various industrial application that captures a significant place in the enzyme market. It belongs to the proteolytic enzyme group that cleaves the highly stable and fibrous protein, keratin through hydrolysis. Keratins are hard- corrupting sinewy proteins insoluble in natural solvents and water. It is frequently aggregated in nature and expressively present in the plumes, hair, nail, horn, skins, feet, etc. The maximum range of microorganisms, such as bacteria, fungi, and actinomycetes have been accounted for producing keratinases with significant biotechnological applications. Successful application of this group of enzymes have been seen in various industries such as farming, laundry detergent, cosmetics, animal feed, pharmaceutical, leather, and textile. Moreover they have found remarkable usability in environmentally friendly waste management also. This paper focuses on the structure, sources, and various applications of this industrially important enzyme.
Comparison of HPLC-DAD and UPLC-MS/MS in Monitoring Serum Concentration of Lamotrigine
Authors: Hu Lufeng , Tang Congrong , Wang Xubin , Chen Zhibin , Ke Xiaofang , Wang Yingying
Published: February 2021

Background:

Lamotrigine (LTG) is a broad-spectrum and first-line anti-epileptic drug. To monitor the serum levels of LTG in epileptic seizures patients, high-performance liquid chromatography with diode-array detection (HPLC-DAD) and ultra-performance liquid chromatography-- tandem mass spectrometry (UPLC-MS/MS) methods were established and compared.

Methods:

Imatinib was used as the internal standard (IS) for both methods. LTG and IS were detected at 246 nm by HPLC-DAD. In UPLC-MS/MS, LTG and IS positive ion were detected by multiple reaction monitoring (MRM), with m/z of 256/210.9 and 494/394.02, respectively. A total of 37 blood samples from epileptic patients were determined and studied by these two methods.

Results:

There was an acceptable linearity for the two methods. The concentration range of LTG was 0.59 ~ 22.20 mg/L by HPLC, and 0.28 ~ 23.97 mg/L by UPLC-MS/MS. The Pearson regression coefficient of Deming regression was 0.9653 (95% CI: 0.9332 to 0.9821). Bland–Altman method demonstrated that the concentration of LTG determined by UPLC-MS/MS was 8.3% higher than that determined by HPLC (limits of agreement, -32.0% to +48.6%).

Conclusion:

There was a significant correlation between the two methods. Both HPLC and UPLC- MS/MS can be used for routine clinical monitoring of LTG.
Multimodal Protocol for the Treatment of Odontogenic Keratocysts
Authors: Haas Jr. Orion , Betina Belloc. Crescente , Agustín Machado-Fernández , André Xavier Padilha Favoreto , Neimar Scolari , Rogério Belle de Oliveira
Published: February 2021

Purpose:

The aim of this study is to evaluate longitudinally the effectiveness of a multimodal protocol based on decompression followed by enucleation combined with the use of liquid nitrogen under local anesthesia for the treatment of odontogenic keratocysts.

Methods:

Seven patients with a diagnosis of odontogenic keratocyst were evaluated longitudinally to clinical and histological features, and pre- and postoperative radiographs were analyzed. Data were collected on the epidemiological profile of patients and on cysts, including the presence of recurrence, duration of drainage device use, lesion site, and presence of postoperative complications.

Results:

No recurrence was observed during follow-up. Mean follow-up was 59.57 months (range, 18-96 months). No pathological fracture was observed. None of the patients had persistent paresthesia of the inferior alveolar nerve. Substantial reduction in cyst size and epithelial differentiation were observed in all patients after multimodal treatment.

Conclusion:

Based on these results, the multimodal protocol proposed here was effective in the treatment of odontogenic keratocysts by reducing lesion size, avoiding possible damage to adjacent anatomical structures, and allowing a surgical procedure with less morbidity. The longitudinal follow-up of patients showed that this treatment modality is associated with a low recurrence rate compared with alternative therapies.
Topical 5% Imiquimod as Monotherapy for Primary Cutaneous and Cutaneous Metastatic Melanoma: Systematic Review of the Literature
Authors: O’Hern Keegan , Chambers Meagan , Liang Shu T. , Badin Dylan J. , Chapman Michael S.
Published: February 2021

Background:

Surgery is the gold standard treatment for primary cutaneous melanoma but may not be suitable given some comorbiditiies, lesion size or location, or anticipated functional impairment. Imiquimod (IMQ) is a topical immunotherapy infrequently used for melanoma, often in combination with other treatments.

Objective:

The present work aims to review the available literature on the safety and efficacy of imiquimod in the treatment of cutaneous primary and metastatic melanoma.

Methods:

We systematically reviewed the literature on topical imiquimod as monotherapy for melanoma, excluding in situ disease. MEDLINE, EMBASE, and CINAHL searches were conducted using terms related to imiquimod and melanoma, results summarized according to the PRISMA Guidelines and quality of evidence assessed using the GRADE tool.

Results:

Of 559 citations identified, 14 case reports and series with 38 patients with 95 lesions met inclusion criteria. There was heterogeneity in treatment regimens, including the number of applications and treatment length. Complete clearance was observed in 39% of cases, while the stable or progressive disease was seen in 42% of cases; treatment efficacy was limited in cases with prior metastatic disease.

Conclusion:

The current literature for the use of imiquimod in cutaneous primary and metastatic melanoma remains scarce, with most evidence derived from case reports and series likely to be influenced by selection bias for positive treatment results. Nevertheless, imiquimod remains a relatively well-tolerated treatment for cutaneous primary and metastatic melanoma that may be used in selected cases.
Chemical evaluation and anti-radical activity of varieties of Morus alba l. (morera, moraceae) from Venezuela.
Authors: Sosa del Castillo Daynet , Quintero Mesa José Johnatan , Rojas Alvear Yeifre José , Rodríguez María , Rea Suárez Ramón Antonio , Miranda Martínez Migdalia
Published: February 2021

Mulberry (Morus alba L.), known as white mulberry, is a plant widely used in medicine and food due to its chemical composition. The qualitative study of the primary and secondary metabolites of the methanolic extracts of the four varieties of Morera was developed by chromatographic profile (TLC) against standards. Quantification was performed through colorimetric assays. All results were analyzed through statistical analysis. The results indicated the existence of similarities between varieties for both primary and secondary metabolites. The radical capacity of the varieties analyzed was also evaluated by finding that the Táchira variety had the highest anti-radical capacity with an IC50 of 553.58 ± 3.23 µg / mL followed by the Maracay IC50 varieties of 1054.01 ± 1.76 µg / mL, Boconó IC50 of 1398.93 ± 2.23 µg / mL and Yu-62 IC50 of 3817.89 ± 18.08 µg / mL. It was found that the use of the thin layer chromatography (CCF) technique was efficient to detect the presence of phenolic compounds, soluble carbohydrates, and amino acids in the four varieties studied. The Yu-62 variety had the highest total phenol contents and proteins; the amino acid content was higher for the Táchira variety, while the soluble carbohydrate content was higher in the Boconó variety. The presence of saponins was not detected in any of the four varieties evaluated
Factors Affecting Public Adoption of COVID-19 Prevention and Treatment Information During an Infodemic: Cross-sectional Survey Study
Authors: Han Yangyang , Jiang Binshan , Guo Rui
Published: February 2021

Background

With the spread of COVID-19, an infodemic is also emerging. In public health emergencies, the use of information to enable disease prevention and treatment is incredibly important. Although both the information adoption model (IAM) and health belief model (HBM) have their own merits, they only focus on information or public influence factors, respectively, to explain the public’s intention to adopt online prevention and treatment information.

Objective

The aim of this study was to fill this gap by using a combination of the IAM and the HBM as the framework for exploring the influencing factors and paths in public health events that affect the public’s adoption of online health information and health behaviors, focusing on both objective and subjective factors.

Methods

We carried out an online survey to collect responses from participants in China (N=501). Structural equation modeling was used to evaluate items, and confirmatory factor analysis was used to calculate construct reliability and validity. The goodness of fit of the model and mediation effects were analyzed.

Results

The overall fitness indices for the model developed in this study indicated an acceptable fit. Adoption intention was predicted by information characteristics (β=.266, P<.001) and perceived usefulness (β=.565, P<.001), which jointly explained nearly 67% of the adoption intention variance. Information characteristics (β=.244, P<.001), perceived drawbacks (β=–.097, P=.002), perceived benefits (β=.512, P<.001), and self-efficacy (β=.141, P<.001) jointly determined perceived usefulness and explained about 81% of the variance of perceived usefulness. However, social influence did not have a statistically significant impact on perceived usefulness, and self-efficacy did not significantly influence adoption intention directly.

Conclusions

By integrating IAM and HBM, this study provided the insight and understanding that perceived usefulness and adoption intention of online health information could be influenced by information characteristics, people’s perceptions of information drawbacks and benefits, and self-efficacy. Moreover, people also exhibited proactive behavior rather than reactive behavior to adopt information. Thus, we should consider these factors when helping the informed public obtain useful information via two approaches: one is to improve the quality of government-based and other official information, and the other is to improve the public’s capacity to obtain information, in order to promote truth and fight rumors. This will, in turn, contribute to saving lives as the pandemic continues to unfold and run its course.
Evidence Synthesis of Digital Interventions to Mitigate the Negative Impact of the COVID-19 Pandemic on Public Mental Health: Rapid Meta-review
Authors: Rauschenberg Christian , Schick Anita , Hirjak Dusan , Seidler Andreas , Paetzold Isabell , Apfelbacher Christian , Riedel-Heller Steffi G , Reininghaus Ulrich
Published: February 2021

Background

Accumulating evidence suggests the COVID-19 pandemic has negative effects on public mental health. Digital interventions that have been developed and evaluated in recent years may be used to mitigate the negative consequences of the pandemic. However, evidence-based recommendations on the use of existing telemedicine and internet-based (eHealth) and app-based mobile health (mHealth) interventions are lacking.

Objective

The aim of this study was to investigate the theoretical and empirical base, user perspective, safety, effectiveness, and cost-effectiveness of digital interventions related to public mental health provision (ie, mental health promotion, prevention, and treatment of mental disorders) that may help to reduce the consequences of the COVID-19 pandemic.

Methods

A rapid meta-review was conducted. The MEDLINE, PsycINFO, and CENTRAL databases were searched on May 11, 2020. Study inclusion criteria were broad and considered systematic reviews and meta-analyses that investigated digital tools for health promotion, prevention, or treatment of mental health conditions and determinants likely affected by the COVID-19 pandemic.

Results

Overall, 815 peer-reviewed systematic reviews and meta-analyses were identified, of which 83 met the inclusion criteria. Our findings suggest that there is good evidence on the usability, safety, acceptance/satisfaction, and effectiveness of eHealth interventions. Evidence on mHealth apps is promising, especially if social components (eg, blended care) and strategies to promote adherence are incorporated. Although most digital interventions focus on the prevention or treatment of mental disorders, there is some evidence on mental health promotion. However, evidence on process quality, cost-effectiveness, and long-term effects is very limited.

Conclusions

There is evidence that digital interventions are particularly suited to mitigating psychosocial consequences at the population level. In times of physical distancing, quarantine, and restrictions on social contacts, decision makers should develop digital strategies for continued mental health care and invest time and efforts in the development and implementation of mental health promotion and prevention programs.
Early Improvement of Acute Respiratory Distress Syndrome in Patients With COVID-19 in the Intensive Care Unit: Retrospective Analysis
Authors: Zhan Zhu , Yang Xin , Du Hu , Zhang Chuanlai , Song Yuyan , Ran Xiaoyun , Zhang An , Yang Mei
Published: February 2021

Background

Since the start of the COVID-19 pandemic, there have been over 2 million deaths globally. Acute respiratory distress syndrome (ARDS) may be the main cause of death.

Objective

This study aimed to describe the clinical features, outcomes, and ARDS characteristics of patients with COVID-19 admitted to the intensive care unit (ICU) in Chongqing, China.

Methods

The epidemiology of COVID-19 from January 21, 2020, to March 15, 2020, in Chongqing, China, was analyzed retrospectively, and 75 ICU patients from two hospitals were included in this study. On day 1, 56 patients with ARDS were selected for subgroup analysis, and a modified Poisson regression was performed to identify predictors for the early improvement of ARDS (eiARDS).

Results

Chongqing reported a 5.3% case fatality rate for the 75 ICU patients. The median age of these patients was 57 (IQR 25-75) years, and no bias was present in the sex ratio. A total of 93% (n=70) of patients developed ARDS during ICU stay, and more than half had moderate ARDS. However, most patients (n=41, 55%) underwent high-flow nasal cannula oxygen therapy, but not mechanical ventilation. Nearly one-third of patients with ARDS improved (arterial blood oxygen partial pressure/oxygen concentration >300 mm Hg) in 1 week, which was defined as eiARDS. Patients with eiARDS had a higher survival rate and a shorter length of ICU stay than those without eiARDS. Age (<55 years) was the only variable independently associated with eiARDS, with a risk ratio of 2.67 (95% CI 1.17-6.08).

Conclusions

A new subphenotype of ARDS—eiARDS—in patients with COVID-19 was identified. As clinical outcomes differ, the stratified management of patients based on eiARDS or age is highly recommended.
Evaluation of a Blended Relapse Prevention Program for Anxiety and Depression in General Practice: Qualitative Study (Preprint)
Authors: Krijnen-de Bruin Esther , Geerlings Jasmijn A , Muntingh Anna DT , Scholten Willemijn D , Maarsingh Otto R , van Straten Annemieke , Batelaan Neeltje M , van Meijel Berno
Published: February 2021

BACKGROUND

Existing studies have yet to investigate the perspectives of patients and professionals concerning relapse prevention programs for patients with remitted anxiety or depressive disorders in primary care. User opinions should be considered when optimizing the use and implementation of interventions.

OBJECTIVE

This study aimed to evaluate the GET READY relapse prevention programs for patients with remitted anxiety or depressive disorders in general practice.

METHODS

Semistructured interviews (N=26) and focus group interviews (N=2) with patients and mental health professionals (MHPs) in the Netherlands were performed. Patients with remitted anxiety or depressive disorders and their MHPs who participated in the GET READY study were interviewed individually. Findings from the interviews were tested in focus group interviews with patients and MHPs. Data were analyzed using thematic analysis.

RESULTS

Participants were positive about the program because it created awareness of relapse risks. Lack of motivation, lack of recognizability, lack of support from the MHP, and symptom severity (too low or too high) appeared to be limiting factors in the use of the program. MHPs play a crucial role in motivating and supporting patients in relapse prevention. The perspectives of patients and MHPs were largely in accordance, although they had different perspectives concerning responsibilities for taking initiative.

CONCLUSIONS

The implementation of the GET READY program was challenging. Guidance from MHPs should be offered for relapse prevention programs based on eHealth. Both MHPs and patients should align their expectations concerning responsibilities in advance to ensure optimal usage. Usage of blended relapse prevention programs may be further enhanced by diagnosis-specific programs and easily accessible support from MHPs.

INTERNATIONAL REGISTERED REPORT

RR2-10.1186/s12888-019-2034-6
Characterization of Cassia Tora Seed (CTS) Oil-Based Biodiesel-Diesel Blends
Authors:   Kaduna Refining and Petrochemical Company, Morakinyo Saferiel Onatola , Muhammad Idris Misau ,   Abubakar Tafawa Balewa University, Yusuf Abdulwadud Abdulkarim ,   Abubakar Tafawa Balewa University, Aroke Umar Omeiza ,   Abubakar Tafawa Balewa University, Mohammed Jibril ,   Abubakar Tafawa Balewa University
Published: February 2021

The paper reported on the characterization of CTS oil-based biodiesel-diesel blends. The study's primary objective are the physicochemical characterization of oil and biodiesel from Cassia Tora seed (CTS) oil, characterization of CTS oil-based biodiesel using FTIR and GCMS analysis. Extraction revealed the pres-ence of 8.8% oil in Cassia Tora seed. The CTS biodiesel's viscosity was found to be 0.9092, which is well above the petroleum diesel. The physiochemical characterization showed that 5, 12.5 and 20 % CTS oil-based biodiesel-diesel blends are within acceptable limit for combustion engine without modification having viscosities of 0.8744, 0.8764, and 0.8787 respec-tively while 100% CTS oil-based biodiesel would require upgrading to meet up with the recommended standard for fuel used as diesel in internal combustion engines. FTIR and GCMS analysis showed functional groups and characteristic peaks of fatty acids and methyl ester with carbon range from C13–C17, C16 constituted the major Fatty acid group and contained 61.69 % Monounsaturated Fatty Acid (MUFA), and 38.31 % Saturated Fatty Acid (SFA) giving a 94.3% biodiesel yield.
The Model of Development of Aesthetic Competence of Future Educators of Preschool Education Institutions
Authors:   Oleksandr Dovzhenko Hlukhiv National Pedagogical University, Rozhnova Victoria
Published: February 2021

The article is devoted to the characteristics of the structural model of development of aesthetic competence of future educators of preschool education institutions. The concepts «model», «modeling» are revealed. The own definition of the concept «structural model of development of aesthetic competence of future educators of preschool education institutions» is offered. The characteristics of the target, methodological, organizational, semantic, activity, result-evaluation blocks of the author’s model are represented.
СЕТЬ SPACEWIRE/SPACEFIBRE КАК ОСНОВА ГЛОБАЛЬНОЙ КОСМИЧЕСКОЙ ИНФРАСТРУКТУРЫ
Authors: Гришин В.Ю. , Еремеев П.М. , Орлов А.В.
Published: February 2021

В статье анализируются тенденции развития глобальных космических группировок. Для обеспечения эффективности таких группировок предлагается создание космической информационной инфраструктуры с бортовым сегментом на основе сети SpaceWire / GigaSpaceWire / SpaceFibre.
АВТОНОМНЫЙ НОСИМЫЙ РАДИОПЕЛЕНГАЦИОННЫЙ КОМПЛЕКС С ПРИМЕНЕНИЕМ АЛГОРИТМОВ КОРРЕЛЯЦИОННОГО ИНТЕРФЕРОМЕТРА
Authors: Бабич В.В. , Собченко М.И. , Ухандеев В.И. , Тикменов В.Н.
Published: February 2021

Разработан автономный носимый радиопеленгационный комплекс, предназначенный для определения направления на источник радиоизлучения. Приведены технические характеристики радиопеленгационного комплекса, показана его структурная схема. Рассмотрены алгоритмы определения направления на источник радиоизлучения.
ПОСТРОЕНИЕ ИНДУКТИВНЫХ СИСТЕМ ЧРЕСКОЖНОЙ ПЕРЕДАЧИ ЭНЕРГИИ СО СТАБИЛЬНЫМИ ВЫХОДНЫМИ ХАРАКТЕРИСТИКАМИ
Authors: Миндубаев Э.А.
Published: February 2021

Предложен метод построения систем индуктивной беспроводной передачи энергии со стабильными выходными характеристиками. Продемонстрирован сложный характер зависимости выходной мощности и эффективности системы от выбранной рабочей точки усилителя мощности в передающей части системы.
КОМПАКТНЫЙ МУЛЬТИДИАПАЗОННЫЙ РАДАР С СИНТЕЗИРОВАННОЙ АПЕРТУРОЙ
Authors: Переверзев А.Л. , Лялин К.С. , Милёшин Ю.М. , Хасанов М.С. , Затонская А.А.
Published: February 2021

Разработан компактный мультидиапазонный радар с синтезированной апертурой Ku-диапазона частот, позволяющий получать радиолокационные изображения местности с высокой разрешающей способностью. Показаны преимущества использования алгоритма многодиапазонной обработки для компактных РСА, устанавливаемых на малых БПЛА. Приведены способы уменьшения массогабаритных характеристик компактных РСА.
АРХИТЕКТУРНОЕ МОДЕЛИРОВАНИЕ И ОЦЕНКА ПРИНИМАЕМЫХ РЕШЕНИЙ НА ПРИМЕРЕ КЕШ-ПАМЯТИ ДВУХЪЯДЕРНОГО МИКРОПРОЦЕССОРА
Authors: Бычков К.С. , Гревцев Н.А. , Зубковский П.С. , Кулешов А.С. , Лазутин Ю.М. , Чибисов П.А.
Published: February 2021

Средства имитационного моделирования архитектуры микропроцессора являются базовым инструментом для оценки вклада новых идей, вносимых разработчиками на микроархитектурном уровне, на производительность системы в целом, а также для понимания поведения пользовательских программ и выявления аппаратных элементов, ограничивающих эффективность системы.
HYBRID GPS/SINS SYSTEM - AN OVERVIEW
Authors: Andrejević Milan , Milovanović Aleksandra , Nikolić Saša S.
Published: February 2021

This paper describes a hybrid navigation system consisting of an integrated GPS/INS system. The integration of the navigation systems has been performed to improve the accuracy of the navigation parameters and it is a current trend in the world. The need for continuous navigation, during the change of position of the GPS receiver, during the closing time of the GPS receiving antenna, and during the appearance of interference, has imposed a solution that is achieved by the integration of GPS / INS. The role of SINS, which is part of the integrated GPS / INS navigation system, is to determine the navigation parameters at intervals between two adjacent measurements of GPS receivers, i.e., at times when there is no GPS navigation information for any reason. In this way, GPS and INS, when used together, complement and correct each other, significantly increasing the reliability and accuracy of the hybrid navigation system.
A STUDY OF THE ENVIRONMENTAL KUZNETS CURVE FOR TRANSPORT GREENHOUSE GAS EMISSIONS IN THE EUROPEAN UNION
Authors: Petrović Nikola , Bojović Nebojša , Petrović Marijana , Jovanović Vesna
Published: February 2021

In view of the European Union as one of the main polluters in the word and the fact that GDP per capita in the European Union is equivalent to the 282 percent of the world`s average, it is interesting to study the relationship between transport GHG emissions and the economic activity within the European Union. In the paper, the authors check the environment Kuznets curve hypothesis for members of the EU over the period 2000-2014. The analysis results show that an inverse-U relationship exists between transport GHG emissions and GDP per capita. At the same time, the results indicate that the change of economic structure has influenced the transport GHG emissions in the developed countries, that is, in the countries that record a higher level of GDP per capita.
DEVELOPMENT OF A NEW HYBRID MULTI CRITERIA DECISION-MAKING METHOD FOR A CAR SELECTION SCENARIO
Authors: Ali Yousaf , Mehmood Bilal , Huzaifa Muhammad , Yasir Umair , Khan Amin Ullah
Published: February 2021

Increasing competition in the automobile industry has led to a vast variety of choices when buying a car thus making car selection a tedious task. The objective of this research is to develop a new hybrid multi-criteria decision-making technique, with accuracy greater than that of the already existing methods, in order to help the people in decision-making while buying a car. Hence, considering a broader spectrum, this study aims at easing the process of multi-criteria decision-making problems in different fields. To achieve the objective, seven different alternatives were evaluated with respect to the enlisted evaluation criteria, which were selected after analyzing the secondary data obtained from Pak wheels based on style, fuel economy, price, comfort and performance. These criteria were then analyzed using the proposed Full Consistency Fuzzy TOPSIS method. As the name tells, this method is a unique combination of two techniques. The Full Consistency method is used to calculate the weights of the criteria while the Fuzzy TOPSIS approach is applied to rank the alternatives according to their scores in the selected criteria. The outcomes demonstrate an increase in the consistency ratio of the weight coefficients due to which the ranking of the alternatives by the FCF-TOPSIS is more accurate than the TOPSIS and the Analytical Hierarchy Process. The novelty of the method lies in the fact that this combination has not been used for an alternative selection scenario before. In addition to this, it can be used in various industries where a choice between the available alternatives arises based on a set of evaluation criteria.
Stability, boundedness and existence of unique periodic solutions to a class of fourth order functional differential equations
Authors: Ademola Adeleke Timothy
Published: February 2021

In this paper a novel class of fourth order functional differential equations is discussed. By reducing the fourth order functional differential equation to system of first order, a suitable complete Lyapunov functional is constructed and employed to obtain sufficient conditions that guarantee existence of a unique periodic solution, asymptotic and uniform asymptotic stability of the zero solutions, uniform boundedness and uniform ultimate boundedness of solutions. The obtained results are new and include many prominent results in literature. Finally, two examples are given to show the feasibility and reliability of the theoretical results.
A study of topological structures on equi-continuous mappings
Authors: Gupta Ankit , Sarma Ratna Dev
Published: February 2021

Function space topologies are developed for EC(Y,Z), the class of equi-continuous mappings from a topological space Y to a uniform space Z. Properties such as splittingness, admissibility etc. are defined for such spaces. The net theoretic investigations are carried out to provide characterizations of splittingness and admissibility of function spaces on EC(Y,Z). The open-entourage topology and pointtransitive-entourage topology are shown to be admissible and splitting respectively. Dual topologies are defined. A topology on EC(Y,Z) is found to be admissible (resp. splitting) if and only if its dual is so.