bluuebunny/crossref_metadata_2025 huggingface dataset:
In vitro effect of lemon essential oil and garlic extract on Monilinia fructicola growth
Authors: Mitidieri Mariel , Barbieri Martín , Brambilla María Virginia , Piris Estela
Published: May 2021

Brown rot produced by Monilinia fructicola (MON) is the main disease that causes postharvest losses in peaches of Argentina. There is a public concern in reducing the use of synthetic fungicides. The objective of this work was to evaluate the effect of lemon essential oil (LO) and aqueous garlic extract (GE) on MON in vitro mycelial growth inhibition (INH). In a first trial a MON colony disc was placed in the middle of a Petri dish containing PDA 2%, or over the plate lid containing 1 mL of the following treatments: Control, LO 0.5%, LO 1%, LO 3% and Fludioxonil 0.02%. In a second trial, GE was obtained processing fresh garlic (cultivar Colorado) in a blender with tap water; 1 mL of garlic extract was placed in the cover of each plate, the treatments were: Control, GE 2.27%, GE 5.68%, GE 11.35% and Fludioxonil 0.02%, the MON colony was placed over the lid containing the extract. All concentrations of LO assayed and GE 11.35% showed INH > 90%. Following these results LO and GE could be evaluated in future trials as postharvest treatments on peach fruits for Monilinia fructicola control.
PROCEDIMENTOS PARA DETERMINAÇÃO DE DENSIDADE RELATIVA DOS MINERAIS: UMA VIVÊNCIA NOS LABORATÓRIOS DE MINERALOGIA DO MUSEU DE GEOCIÊNCIAS DA UFPA
Authors:   Geólogo, Eng. de Segurança do Trabalho, autônomo, Belém, Pará,, XAVIER Milson
Published: May 2021

The role of Mineralogy in society has an extraordinary and unique importance, to the point of verifying its presence both on the wall of the environment where the individual is, in times of pandemic, or on the unoccupied asphalt of the external environment. In the study of Mineralogy, the determination of the relative density of minerals is a constant assignment of professionals in the mineral industry, either for the purpose of identifying mineral substances or for solving storage and transportation issues. Therefore, knowing the equipment and which procedures for determining it are fundamental issues for solving these problems. In this way, descriptions of operational procedures of some equipment are presented, built with the purpose of determining the relative density of minerals, as a way to contribute to undergraduate students in Geology or similar sciences.
Welfare problems of horses
Authors:   National University of Life and Environmental Sciences of Ukraine, Nedosekov V. V. , Krytsia Y. P. ,   National University of Life and Environmental Sciences of Ukraine
Published: May 2021

The article presents an analysis of the basic concepts of animal welfare, which is a prerequisite for quality and successful innovative animal husbandry. The horses welfare should be considered from the standpoint of the concept of the "five freedoms", which should be reflected in the lives of animals. The aim of the article is to analyze the state of the horses welfare and the prospects of development and implementation at the national and European levels. The analysis indicates the need to develop a system for assessing the welfare of horses and its implementation in Ukraine, while, taking into account objective and subjective indicators, the system for assessing the welfare of horses should include owners, veterinarians (horse care) and experts. To assess the welfare of sport horses, the Veterinary Regulations (BP) of the International Equestrian Federation (FEI) must be used during the competition, which must be observed during the event. Methods for assessing the degree of welfare, characterize the condition of the animal in both external and internal indicators, but the dominant is stress, which through the nervous and endocrine systems adversely affect all parts of the immune system. In Ukraine, the horse population has tripled reduce in thirty years and continues to decline, but the analysis of horse welfare in Ukraine is either not conducted at all, or is sporadic and mainly aimed at assessing individual animal health indicators (assessment of body condition, lameness, etc.). Therefore, in Ukraine it is necessary to establish criteria and develop a system for assessing the welfare of horses, improving the legal framework and implementation in practice. A plan of recommended action for stakeholders (federations, veterinarians, horse owners, government services, etc.) was presented, and it was recommended to develop and implement criteria for assessing the welfare of horses that could be used to study animal welfare. We believe that the system of horse welfare assessment as a consulting tool is necessary for the standardization of survey and analysis of welfare, to develop measures to optimize the management of horses, which should be the main document of equestrian associations of Ukraine. In addition, legislation on the welfare of horses is crucial, but there is no legislation acts in the field of welfare. Undoubtedly, in combination with the welfare of horses, it is important to develop an algorithm for biosecurity in the horses management with an emphasis on the epizootology of diseases, vaccination conditions, disinfection and analysis of critical points of admission to animals, which should be the basis for the development of the National Standard for Welfare and Biosecurity at the level of horse farms in Ukraine.
Improvements in Cognition and Educational Attainment as a Result of Integrating Music into Science Teaching in Elementary School
Authors: Mualem Raed
Published: May 2021

BACKGROUND AND OBJECTIVE: This study examines the effect on third-grade students’ academic achievement and their pleasure and interest in lessons as a result of the incorporation of music into science classes. MATERIAL AND METHODS: Sixty third grade Arab school children were studied before and after listing a Mozart Concerto. Their pleasure and interest in the lesson was evaluated using the 20-statement Barak questionnaire. Comparison was made between an initial 6 lessons without music and subsequent 6 lessons with music. In another study at the Institute of Neurology and Neurosurgery in Havana, Cuba, continuous electroencephalographic monitoring (CEEG) was performed in 15 third-grade school children during 10 minutes at basal condition and for 10 minutes while listening to the same piece of music. RESULTS: Assessment scores in the science examination were significantly higher overall after listening to music. A clear increment of alpha and gamma absolute powers was found when listening to music, although for the alpha band this augmentation was significantly greater. An increment of the alpha band power was related to significantly better performance of spatial–temporal tasks when listening to music. Changes in the gamma frequency band represent cognitive processes. Hence, CEEG analysis adds to evidence that listening to music can increase enjoyment and improve academic achievement among elementary school students. CONCLUSION: We propose that music stimulates the formation of neural networks that prime the brain for learning. We recommend that teachers of core subjects, especially mathematics, science and languages, begin their lessons with 5 minutes of calm music.
SARC-F test in Sarcopenia and Frailty: A Narrative Review
Authors: Bahat Gülistan , Erbaş Sacar Duygu
Published: May 2021

SARC-F is a commonly used screening tool for sarcopenia case finding due to its user-friendly and very practical application. It has been introduced to screen for sarcopenia with simple functional questions obviating the need for the measurement of muscle mass. A score equal to or greater than 4 has been reported as predictive of poor outcomes. Sarcopenia is a geriatric syndrome associated with well-known adverse consequences. The growing awareness of sarcopenia as a determinant of poor health in older people has underlined the importance of rapidly diagnosing sarcopenia, which will aid clinicians for implementing prevention and treatment strategies. It has been recommended formal tool for sarcopenia screening/case-finding. In this narrative review, we aimed to evaluate the use of SARC-F, its ability to screen and diagnose sarcopenia and its potential use in the fields other than sarcopenia, i.e. frailty. We conclude that SARC-F stands as one of the most useful and applied tool in studies focusing on screening and diagnosis of sarcopenia. In addition, it has a great potential to be used as a frailty screening tool.
The Lived Experience of Nurses Working in Cardiology Services with Online Continuing Professional Programs in Advancing their Specialized Clinical Practice: Phenomenology Study Analysis
Authors: Salmi Issa
Published: May 2021

Introduction: Cardiology nursing is one of the most challenging nursing specialties. Online continuing professional development (CPD) programs may allow nurses to fulfil the demand for specialty competency. Methods and materials: This manuscript described the process of data analysis and discusses the philosophical and theoretical frameworks that shape this study. the study was conducted in one of the largest accredited teaching hospitals in South Australia. Results: Volunteer participants were interviewed where each participant was given a pseudonym to protect confidentiality. First, interviews were transcribed manually. Transcription is considered an interpretive act and a perfect way to immerse oneself within the data because it helps create initial meanings. Second, the researcher listened to each interview while checking compatibility with the transcript. Third, the researcher read and re-read transcripts and highlighted essential ideas before the coding process. Repeated transcript reading helped develop main ideas, recognise shared thoughts, meanings, and patterns, and identify potential themes. Furthermore, it was evident during this stage that some of the researcher’s pre-assumptions regarding the phenomena were revealed in certain aspects of nurses’ lived experiences. In addition, audio recordings and a reflective diary were utilised to reveal non-verbal clues of participants, adding depth and transparency to data analysis. The final step involved writing a summary for each transcript containing the main ideas. Conclusions: It is apparent that six main themes were embedded in the lived experiences of the RNs working in cardiac services and using the online CPD course to advance themselves knowledge and skills.
A Comprehensive Approach to the Diagnosis and Treatment of Chronic Coronary Syndrome
Authors: Stoyanova Velina
Published: May 2021

Coronary artery disease (CAD) is a chronic progressive disease with social significance, result of obstructive or non- obstructive atherosclerotic plaque accumulation in the epicardial arteries. CAD is one of the leading causes for deterioration in quality of life and cardiovascular mortality. CAD has dynamic character and its major clinical presentations are: acute coronary syndromes / STEMI, NSTEMI, UA/ and chronic coronary syndromes. In this case report we present the treatment algorithm in patient with chronic coronary syndrome: from optimal medical therapy, through objective methods of examination leading to the decision for interventional treatment and the importance of regular follow-up
Clinical Oncology Research and Reports (E-ISSN: 2693-4787) Dear Dr. Wilma D. Heemsbergen, Greetings! I am writing this email to introduce our Journal “Clinical Oncology Research and Reports” due for release our upcoming issue in the End of May. We have just gone through your published manuscript which was quite interesting “Breast-shape changes during radiation therapy after breast-conserving surgery” so we would like to publish your valuable manuscript in our Journal too. We believe that your research experience and abundance of knowledge will help us in spreading the scientific knowledge throughout the world, we request you to kindly submit your unpublished manuscript towards our esteemed Journal. Note: If you are interested in joining our Editorial/Reviewer Board please send your CV and a recent photograph We look forward to a long-lasting scientific relationship. Best Regards, Tracy Roy Editorial Coordinator Clinical Oncology Research and Reports Disclaimer: If you don’t want to wish to get emails from us please revert us with unsubscribe
Authors: Atroune L. Atroune
Published: May 2021

Extracranial metastases from glioblastoma multiforme (GBM) are rare, especially cutaneous metastasis. However, the metastatic mechanism of GBM remains unknown with no current consensus regarding the best therapeutic regimen. We report the clinical, imaging and pathological features of a case of a 47 years old man with primary glioblastoma; who 12 months after receiving a macroscopically total resection and adjacent radiotherapy, developed scalp metastasis and subsequent multiple skin metastasis. We also discuss the details of this case in comparison with the previously reported cases in literature in terms of clinical presentation, lesions’ site, management and survival.
The Mercury Product of Mining and its Relationship with Cardiovascular Disease: State of the Art
Authors: Núñez Rocío
Published: May 2021

It is clear, according to the literature, mercury from mining, in its methylmercury form, produces neurotoxicity and decreased IQ in fetuses; However, there are several reviews and studies on the association of mercury with cardiovascular diseases, because these are the cause of greater morbidity and mortality worldwide; it is necessary to clarify their relationship, as the purpose of this state of art. These documents were reviewed, analyzed and synthesized to define said association; within which, a meta-analysis was found that reviews 37 studies and concludes that there is no association of mercury with cardiovascular diseases and that on the contrary; lead, arsenic, cadmium and copper, if they have a strong relationship with cardiovascular disease.
In Search of Quality: Echocardiographic Mitral Regurgitation Evaluation Discrepancies
Authors: Kundelis Ričardas
Published: May 2021

Introduction: Two-dimensional (2D) transthoracic echocardiography (TTE) for mitral regurgitation (MR) evaluation plays a vital role in choosing the adequate type of treatment. Considerable undertreatment prevalence suggests a possible knowledge gap. The aim of the present study was to assess physician diagnostic adherence according to clinical echocardiographic guidelines. Methods: 438 echocardiographically confirmed MR cases evaluated by 60 beginner, intermediate, or expert level physicians were enrolled. MR eyeballing tendencies, quantitative method application accuracy, and guideline adherence were analyzed. Results: Main discrepancies were unjustified eyeballing (66.95%; p<0.001), inaccurate application of methods (22.46%, p=0.002), and misinterpretation of diagnostic criteria (10.59%). Female patient gender (p=0.026) and lower physician competence levels (p<0.001) were identified as predictors for eyeballing discrepancy possibility. The latter was also a predictor quantitative method discrepancy (p=0.043). Method choice had the most substantial correlation to discrepancies when determining moderate–severe MR (p<0.001). Conclusions: Echocardiographic evaluation of hemodynamically significant MR discrepant in 53.88% of cases as non-quantitative evaluation of hemodynamically significant MR, methodological inaccuracies, and misinterpretation of diagnostic criteria compile the largest proportion of discrepancies. Female gender, lower physician competence, and downgraded diagnostic method application were the most substantial predictors of discrepancy occurrence.
ON THE ISSUE OF IMPROVING THE QUALITY OF ELECTRICITY IN THE TRANSIENT OPERATING MODES OF MARINE DIESEL GENERATOR SETS
Authors: Pronina A.
Published: May 2021

The operation of diesel generator sets (DGS) under conditions of significant frequency deviations with sharp load changes is investigated. Systems containing powerful static converters in transient operating modes experience a sharp deterioration in the quality of electricity in terms of non-sinusoidal voltage. The use of filtercompensating devices in conditions of frequency deviation is not effective. In order to improve the quality of the transition process, it is proposed to reduce the speed (frequency) dips by increasing the inertial mass of the DGU by hanging the flywheel.
DEVELOPMENT OF INTERAСTIVETESTS IN WOLFRAM MATHEMATICA AND DELPHI
Authors:   Belarusian National Technical University, Hundzina M , Kandratsyeva N ,   Belarusian National Technical University
Published: May 2021

The educational process at a technical university is inextricably connected with the use of information technology. The process of creating interactive tests in Wolfram Mathematica and Delphi is described in this paper. The main advantage of using such technologies is the continuity and availability of learning anywhere and anytime. The interaction of teachers, students or administrators with the cloud platform and its services is realized using any device (computer, tablet, mobile phone, etc.), which has a browser with the ability to connect to the Internet. Any student can begin to complete the assignment in the classroom, and continue to work at home without the need to copy part of the completed assignment to any storage medium due to the fact that all the necessary information is stored in the cloud (information center) on a remote server. The algorithm described in the paper allows to automatically create various individual tasks for large streams of students. Such developments can be used in the organization of intermediate and final control in physical, mathematical and technical disciplines. The standardized form of knowledge assessment used allows us to correlate the level of achievement in the discipline as a whole, according to certain sections, according to certain types of tasks. The features of the use of cloud technologies for organizing such testing are described in this paper. The use of the developed materials helps to stimulate the systematic study of students, to reduce the role of random factors when passing the control stages of the educational process. The organization of interactive testing allows to carry out the motivational functions of the assessment and to increase the student’s interest in the studied discipline. The use of interactive tests contributes to an increase in the level of information and communication literacy of teachers and students and is aimed at solving the most important task of higher education and education in general - to teach students to work fruitfully in the world of global informatization.
A New Way to Assess Chronic Pain: Application of Machine Learning on Emotional Body Maps
Authors: Chauveau T.
Published: May 2021

Recent studies proposed that understanding the connection between emotional states, pain and bodily sensations might help in the understanding of chronic pain conditions. In the targeted article, the authors developed a mobile platform dedicated to chronic back pain patients in order to measure pain, emotions and associated bodily feelings in their daily life conditions. Applying machine learning, they developed two predictive models of future pain.
Kétamine et douleur aiguë
Authors: Martinez V.
Published: May 2021

Utilisée en anesthésie depuis les années 1960, la kétamine a montré son intérêt particulier par l’absence de dépression respiratoire et par le maintien de la stabilité hémodynamique. Elle se positionne comme une substance de choix dans l’anesthésie de guerre, de catastrophe et d’urgence. La kétamine a longtemps souffert d’une mauvaise image du fait de ses effets secondaires psychodysleptiques. Dans les années 1990, la kétamine a connu un regain d’intérêt au bloc opératoire avec l’émergence de l’analgésie multimodale. Utilisée à dose subanesthésique, elle devient l’antihyperalgésique de choix. Elle présente le meilleur rapport bénéfice/risque avec une épargne morphinique importante, plus particulièrement dans les chirurgies les plus traumatiques. À ce jour, les études suggèrent que son effet antihyperalgésique dans la période périopératoire permettrait de prévenir les douleurs chroniques postopératoires. Les mécanismes d’action de la kétamine sont nombreux, elle n’agit pas seulement sur les récepteurs NMDA, mais elle a une action ubiquitaire sur le système nerveux central, en particulier dans la neuro-inflammation, qui a été étudiée récemment en périopératoire. Ces mécanismes ouvrent de nouvelles perspectives de recherche dans la dépression et les troubles cognitifs postopératoires.
Enhanced Recovery After Surgery strategies for elective craniotomy: a systematic review
Authors: Stumpo Vittorio , Staartjes Victor E. , Quddusi Ayesha , Corniola Marco V. , Tessitore Enrico , Schröder Marc L. , Anderer Erich G. , Stienen Martin N. , Serra Carlo , Regli Luca
Published: May 2021

OBJECTIVE

Enhanced Recovery After Surgery (ERAS) has led to a paradigm shift in perioperative care through multimodal interventions. Still, ERAS remains a relatively new concept in neurosurgery, and there is no summary of evidence on ERAS applications in cranial neurosurgery.

METHODS

The authors systematically reviewed the literature using the PubMed/MEDLINE, Embase, Scopus, and Cochrane Library databases for ERAS protocols and elements. Studies had to assess at least one pre-, peri-, or postoperative ERAS element and evaluate at least one of the following outcomes: 1) length of hospital stay, 2) length of ICU stay, 3) postoperative pain, 4) direct and indirect healthcare cost, 5) complication rate, 6) readmission rate, or 7) patient satisfaction.

RESULTS

A final 27 articles were included in the qualitative analysis, with mixed quality of evidence ranging from high in 3 cases to very low in 1 case. Seventeen studies reported a complete ERAS protocol. Preoperative ERAS elements include patient selection through multidisciplinary team discussion, patient counseling and education to adjust expectations of the postoperative period, and mental state assessment; antimicrobial, steroidal, and antiepileptic prophylaxes; nutritional assessment, as well as preoperative oral carbohydrate loading; and postoperative nausea and vomiting (PONV) prophylaxis. Anesthesiology interventions included local anesthesia for pin sites, regional field block or scalp block, avoidance or minimization of the duration of invasive monitoring, and limitation of intraoperative mannitol. Other intraoperative elements include absorbable skin sutures and avoidance of wound drains. Postoperatively, the authors identified early extubation, observation in a step-down unit instead of routine ICU admission, early mobilization, early fluid de-escalation, early intake of solid food and liquids, early removal of invasive monitoring, professional nutritional assessment, PONV management, nonopioid rescue analgesia, and early postoperative imaging. Other postoperative interventions included discharge criteria standardization and home visits or progress monitoring by a nurse.

CONCLUSIONS

A wide range of evidence-based interventions are available to improve recovery after elective craniotomy, although there are few published ERAS protocols. Patient-centered optimization of neurosurgical care spanning the pre-, intra-, and postoperative periods is feasible and has already provided positive results in terms of improved outcomes such as postoperative pain, patient satisfaction, reduced length of stay, and cost reduction with an excellent safety profile. Although fast-track recovery protocols and ERAS studies are gaining momentum for elective craniotomy, prospective trials are needed to provide stronger evidence.
Endovascular treatment for calcified cerebral emboli in patients with acute ischemic stroke
Authors: Bruggeman Agnetha A. E. , Kappelhof Manon , Arrarte Terreros Nerea , Tolhuisen Manon L. , Konduri Praneeta R. , Boodt Nikki , van Beusekom Heleen M. M. , Hund Hajo M. , Taha Aladdin , van der Lugt Aad , Roos Yvo B. W. E. M. , van Es Adriaan C. G. M. , van Zwam Wim H. , Postma Alida A. , Dippel Diederik W. J. , Lingsma Hester F. , Marquering Henk A. , Emmer Bart J. , Majoie Charles B. L. M. , _ _
Published: May 2021

OBJECTIVE

Calcified cerebral emboli (CCE) are a rare cause of acute ischemic stroke. The authors aimed to assess the association of CCE with functional outcome, successful reperfusion, and mortality. Furthermore, they aimed to assess the effectiveness of intravenous alteplase treatment and endovascular treatment (EVT), as well as the best first-line EVT approach in patients with CCE.

METHODS

The Multicenter Randomized Controlled Trial of Endovascular Treatment for Acute Ischemic Stroke in the Netherlands (MR CLEAN) Registry is a prospective, observational multicenter registry of patients treated with EVT for acute ischemic stroke in 16 intervention hospitals in the Netherlands. The association of CCE with functional outcome, reperfusion, and mortality was evaluated using logistic regression models. Univariable comparisons were made to determine the effectiveness of intravenous alteplase treatment and the best first-line EVT approach in CCE patients.

RESULTS

The study included 3077 patients from the MR CLEAN Registry. Fifty-five patients (1.8%) had CCE. CCE were not significantly associated with worse functional outcome (adjusted common OR 0.71, 95% CI 0.44–1.15), and 29% of CCE patients achieved functional independence. An extended Thrombolysis in Cerebral Infarction score ≥ 2B was significantly less often achieved in CCE patients compared to non-CCE patients (adjusted OR [aOR] 0.52, 95% CI 0.28–0.97). Symptomatic intracranial hemorrhage occurred in 8 CCE patients (15%) vs 171 of 3022 non-CCE patients (6%; p = 0.01). The median improvement on the National Institutes of Health Stroke Scale (NIHSS) was 2 in CCE patients versus 4 in non-CCE patients (p = 0.008). CCE were not significantly associated with mortality (aOR 1.16, 95% CI 0.64–2.12). Intravenous alteplase use in CCE patients was not associated with functional outcome or reperfusion. In CCE patients with successful reperfusion, stent retrievers were more often used as the primary treatment device (p = 0.04).

CONCLUSIONS

While patients with CCE had significantly lower reperfusion rates and less improvement on the NIHSS after EVT, CCE were not significantly associated with worse functional outcome or higher mortality rates. Therefore, EVT should still be considered in this specific group of patients.
Tumor location and reduction in functional MRI estimates of language laterality
Authors: Połczyńska Monika M. , Beck Lilian , Kuhn Taylor , Benjamin Christopher F. , Ly Timothy K. , Japardi Kevin , Cavanagh Lucia , Bookheimer Susan Y.
Published: May 2021

OBJECTIVE

Brain tumors located close to the language cortex may distort functional MRI (fMRI)–based estimates of language dominance. The nature of this distortion, and whether this is an artifact of numerous confounders, remains unknown. The authors hypothesized tumor bias based on laterality estimates independent of confounders and that the effects are the greatest for tumors proximal to Broca's area.

METHODS

To answer this question, the authors reviewed more than 1113 patients who underwent preoperative fMRI to match samples on 11 known confounders (tumor location, size, type, and grade; seizure history; prior neurosurgery; aphasia presence and severity; and patient age, sex, and handedness). The samples included 30 patients with left hemisphere tumors (15 anterior and 15 posterior) and 30 with right hemisphere tumors (15 anterior and 15 posterior), thus totaling 60 patients (25 women; 18 left-handed and 4 ambidextrous; mean age 47 [SD 14.1] years). Importantly, the authors matched not only patients with left and right hemisphere tumors but also those with anterior and posterior tumors. Standard fMRI laterality indices (LIs) were calculated using whole-brain and region of interest (ROI) approaches (Broca's and Wernicke's areas).

RESULTS

Tumors close to Broca's area in the left hemisphere decreased LIs independently of known confounders. At the whole-brain level, this appeared to reflect a decrease in LI values in patients with left anterior tumors compared with patients with right anterior tumors. ROI analysis replicated these findings. Broca's area LIs were significantly lower (p = 0.02) in patients with left anterior tumors (mean LI 0.28) when compared with patients with right anterior tumors (mean LI 0.70). Changes in Wernicke's area–based LIs did not differ as a function of the tumor hemisphere. Therefore, in patients with left anterior tumors, it is essential to assess language laterality using left posterior ROIs. In all remaining tumor groups (left posterior tumors and right hemisphere tumors), language laterality derived from the anterior language ROI was the most robust measure of language dominance.

CONCLUSIONS

Patients with tumors close to Broca's area showed more bilateral fMRI language maps independent of known confounders. The authors caution against the assumption that this reduced language laterality suggests no or little risk to language function following tumor resection in the left inferior frontal gyrus. Their results address how to interpret fMRI data for neurosurgical purposes, along with theoretical questions of contralesional functional compensation and disinhibition.
POSSIBILITIES TO RECOVER ALUMINUM FROM MINING WASTE DUMPS LOCATED IN JIU VALLEY. ECONOMIC, SOCIAL AND ENVIRONMENTAL OPPORTUNITIES
Authors:   University of Petroşani, Romania, Faur Florin , Lazăr Maria ,   University of Petroşani, Romania, Apostu Izabela-Maria ,   University of Petroşani, Romania, Rada Constantin ,   University of Petroşani, Romania
Published: May 2021

The exploitation of low-grade ore deposits or the recovery of useful minerals from old waste dumps and tailing ponds is considered as an interesting economic opportunity especially in the context in which we speak more and more of a reduction in availability of some mineral resources or depletion of conventional ore deposits. The exploitation of old waste dumps and tailing ponds is possible on the one hand due to progress in terms of processing technologies (process efficiency and by lowering the minimum useful content that can be recovered) and on the other by the rise in the demand and the price on the internal and international markets for some useful mineral substances. This paper presents some considerations related to the opportunity to extract useful mineral substances, more precisely aluminum, contained in coal mining waste dumps from Jiu Valley (Romania), regarded in terms of economic, social and environmental benefits.
Strategi Pembelajaran Model Blended Learning Solusi Keterbatasan Dosen
Authors: Pongantung Henny , Elmiana B Linggi  , Asrijal Bakri  , Pricilia Tore
Published: May 2021

STIK Stella maris saat ini mengunakan metode pembelajaran                   konvensional dengan metode student center learning (SCL). Hal ini cukup memberatkan dosen karena tenaga dosen cukup terbatas. Dengan melihat kondisi ini, peneliti mengusulkan solusi dengan menggunakan metode pembelajaran blended learning agar mahasiswa lebih banyak mendapatkan pengalaman belajar mandiri sesuai konsisi mahasiswa dan waktu yang digunakan dosen untuk masuk di kelas bisa dialihkan secara online. Tujuan penelitian menganalisis perbedaan pembelajaran metode blended learning dan metode konvensional terhadap peningkatan motivasi belajar mahasiswa di STIK Stella Maris Makassar. Penelitian ini adalah jenis quasy-eksperiment mengunakan rancangan pre- post test control group design. Teknik pengambilan sampel yaitu  total sampling, jumlah sampel 200 mahasiswa, dibagi dalam kelompok intervensi dan kontrol. Teknik analisis data menggunakan uji Mann Whitney. Diperoleh hasil P=0,000;?=0,005 maka Ha diterima Ho ditolak. Hal ini menunjukkan perbedaan antara metode konvensional dan blended learning. Maka dapat disimpulkan bahwa metode blended learning dapat meningkatkan motivasi belajar mandiri pada mahasiswa dari pada metode konventional. Dari penelitian ini disarankan metode blended learning dapat diterapkan di STIK Stella Maris khususnya dan seluruh perguruan tinggi terutama dengan jumlah dosen yang terbatas.
Pengembangan Multimedia Interaktif dalam Pembelajaran Simulasi dan Komunikasi Digital
Authors: Ferdiansyah Handy , Haling Abdul , Nurhikmah H
Published: May 2021

This research aims, (1) to know the description of the need for interactive multimedia development, (2) the validity, (3) practicality, and (4) the effectiveness of interactive multimedia products in learning simulation and digital communication. This research is a research and development (R&D) using the ADDIE development model with the subject of research as a material expert, a media expert, subject teacher, and forty students. Data was collected by interviews, questionnaires, and tests. The data obtained in this study are qualitative and quantitative data. The results of research are: (1) The level of need for interactive multimedia in learning learning simulation and digital communication for 10th grade student at SMK Muhammadiyah Sidenreng Rappang is very high. This is evidenced by the value of student learning outcomes that have reached the minimum completeness criteria after using interactive multimedia. (2) The results of the product validation data analysis are in the very valid category, this is obtained from the validation assessment of material and media experts. (3) The results of the respondents' evaluation of small group trials and teacher responses to interactive multimedia products are stated to be very practical. (3) Interactive multimedia in simulation learning and digital communication developed effectively as seen from the average recapitulation of learning outcomes assessment shows an increase in learning scores of all students is above the minimal completeness criteria value.
Menstrual Hygiene Management Practice in Magelang Senior High School
Authors: Sukini Tuti , Widatiningsih Sri , Rofiah Siti
Published: May 2021

Background: Menstrual Hygiene Management is the management of hygiene and health when women experience menstruation. UNICEF research results state that 46% of young women in Indonesia change sanitary napkins less than 2 times a day, whereas in theory changing sanitary napkins is at least 3-4 hours a day. Use for more than 8 hours causes genital irritation and itching which will have an impact on health. The purpose of this study was to determine the practice of menstrual hygiene management in high schools in Magelang.Methods: This research was conducted in 5 public high schools in Magelang. This research method is a mixed methods design. explanatory The research was conducted by collecting quantitative data then qualitative data. The study population was all high school students in Magelang City with a total of 267 respondents.Results: The results showed that there was a relationship between the peer support variable (p-value 0,000), the role of the teacher (p-value 0.002), and facilities (p-value 0.003) with menstrual health management practicesConclusion: conclusions and implications for midwifery and nursing practiceAll sections in The peer support variable (p value 0.001) had the most influence on menstrual hygiene management. It is hoped that midwives can contribute in providing health education on Menstrual Hygiene Management (MKM) in cross-sectoral collaboration with the Education Office
Influence of posterior tibial slope on three-dimensional femorotibial alignment under weight-bearing conditions in healthy Japanese elderly people
Authors: Katsumi Ryota , Sato Takashi , Mochizuki Tomoharu , Watanabe Satoshi , Tanifuji Osamu , Kawashima Hiroyuki
Published: May 2021

BACKGROUND: Assessment of three-dimensional (3D) femorotibial alignment is essential for successful knee osteoarthritis treatment in the elderly. The complex morphology of the posterior tibial slope (PTS) might have an influence on sagittal and rotational alignment and the positional relationship between the femur and tibia in the anterior–posterior (AP) direction under weight-bearing conditions. OBJECTIVE: This study aimed to clarify the association between the PTS and 3D femorotibial alignment under weight-bearing conditions in healthy Japanese elderly individuals. METHODS: We investigated the 3D femorotibial alignment of 110 lower extremities of 55 healthy individuals (26 women, 29 men, mean age: 70 ± 6 years). Using our previously reported 3D-to-2D image registration technique, we evaluated the 3D hip-knee-ankle angle (3DHKA) in the sagittal plane, rotational alignment, and the distance between the femoral and tibial origins in the AP direction (tibial AP position) as femorotibial alignment parameters under weight-bearing conditions. We assessed the medial and lateral PTS and their angular difference (PTS difference) as PTS parameters. Stepwise multiple linear regression analysis was performed using PTS parameters and other possible confounders (age, sex, height, and weight) as the independent variables and femorotibial alignment parameters as the dependent variable. RESULTS: Weight (𝛽 = 0.393, p < 0.001) and lateral PTS (𝛽 = 0.298, p < 0.001) were the predictors associated with 3DHKA in the sagittal plane. Lateral PTS (𝛽 = 0.304, p = 0.001) was the only predictor associated with the tibial AP position. Sex (𝛽 = −0.282, p = 0.002) and PTS difference (𝛽 = −0.231, p = 0.012) were associated with rotational alignment. CONCLUSIONS: We found that a steeper lateral PTS resulted in a more flexed knee and anterior tibia. The PTS difference was positively correlated with tibial external rotation. Our data could be used as the standard reference for realignment surgery to ensure PTS is appropriately maintained.
FakeFilter: A cross-distribution Deepfake detection system with domain adaptation
Authors: Jiang Jianguo , Li Boquan , Wei Baole , Li Gang , Liu Chao , Huang Weiqing , Li Meimei , Yu Min
Published: May 2021

Abuse of face swap techniques poses serious threats to the integrity and authenticity of digital visual media. More alarmingly, fake images or videos created by deep learning technologies, also known as Deepfakes, are more realistic, high-quality, and reveal few tampering traces, which attracts great attention in digital multimedia forensics research. To address those threats imposed by Deepfakes, previous work attempted to classify real and fake faces by discriminative visual features, which is subjected to various objective conditions such as the angle or posture of a face. Differently, some research devises deep neural networks to discriminate Deepfakes at the microscopic-level semantics of images, which achieves promising results. Nevertheless, such methods show limited success as encountering unseen Deepfakes created with different methods from the training sets. Therefore, we propose a novel Deepfake detection system, named FakeFilter, in which we formulate the challenge of unseen Deepfake detection into a problem of cross-distribution data classification, and address the issue with a strategy of domain adaptation. By mapping different distributions of Deepfakes into similar features in a certain space, the detection system achieves comparable performance on both seen and unseen Deepfakes. Further evaluation and comparison results indicate that the challenge has been successfully addressed by FakeFilter.
Dual-cell differentiable architecture search for language modeling
Authors: Wan Quan , Wu Lin , Yu Zhengtao
Published: May 2021

Initial results of neural architecture search (NAS) in natural language processing (NLP) have been achieved, but the search space of most NAS methods is based on the simplest recurrent cell and thus does not consider the modeling of long sequences. The remote information tends to disappear gradually when the input sequence is long, resulting in poor model performance. In this paper, we present an approach based on dual cells to search for a better-performing network architecture. We construct a search space that is more compatible with language modeling tasks by adding an information storage cell inside the search cell, so that we can make better use of the remote information of the sequence and improve the performance of the model. The language model searched by our method achieves better results than those of the baseline method on the Penn Treebank data set and WikiText-2 data set.
Air distribution in convex wall jets for ventilation with a constant air flow
Authors: Korbut V. , Mileikovskyi Viktor
Published: May 2021

The scheme of air exchange organization using air supply above a working zone by convex wall jets that interact with each other has been substantiated. This scheme is advisable in cases where it is impossible to supply air directly to the working zone. It provides optimal microclimate parameters with minimal recirculation of polluted air from the upper zone. Simulation of the air exchange organization in an exhibition hall in International Exhibition Centre in Kyiv with ventilation at a constant air volume (CAV) has been performed. The floor area is 5258 m2, the height is 19 m, the minimum outdoor air flow is 21.667 m3/s (78000 m3/h). The current design scheme of air exchange organization is zonal. General air exchange is 43.3333 m3/s (156000 m3/h). Recirculation is accepted 50 %. The air flow supplied in the upper and middle zones is, respectively, 22.5 m3/s (81000 m3/h) and 20.833 m3/s (75000 m3/h). Inlet air has temperature 291.65 K (18.5 °C). It is supplied downward by twisted jets. There are 65 Trox VDL-AHLD-E3/800/0/0/0/RAL 9010 air diffusers with a diameter of 800 mm. The proposed scheme is single-zonal using 24 diffusers PES-D-8-10/15-0,9 4 m above the floor and air removal from the upper zone. This scheme allows halving the air exchange to the minimum outdoor air without recirculation. The air temperature should be decreased by 3.3 K to 288.35 K (15.2 °С). The number of air-conditioners is decreased twice. The calculated consumption of cold decreased by 65.58 W/m2 or 29 %, the calculated consumption of heat for the second heating – by 7.17 W/m2 or 18 %. Saving of capital investments in prices of February 2020 is 792.16 UAH/m2 or 55 %, and decrease of operating costs for the cooling period is 6.61 UAH/m2 or 15 %. Thus, the system is economically beneficial from the beginning of its installation. In the future, its operation will be simulated in a mode with a variable flow rate.
On the calibration dependencies designing for concrete strength testing by sclerometric nondestructive metods
Authors: Snezhkov D.
Published: May 2021

Sclerometric methods of testing concrete, in particular, the rebound hammer testing, retain their positions as the most common indirect methods for concrete strength determining in situ. They are used as a means for technological testing during the buildings construction, as well as during their inspection during maintenance. Indirect parameters of current sclerometric devices are usually point-values: the rebound index, the diameter and depth of the print, the duration of the indenter insertion process, and the maximum interaction force. However, the lack of an unambiguous relationship between these parameters and the strength of concrete leads to additional uncertainty of the test result, which is one of the problems of sclerometric methods of concrete control. The instability of the calibration dependencies of the method is also observed. Even strict compliance with the requirements of the procedure does not guarantee the repeatability of the obtained dependencies.The article considers the possibility of improving metrological indicators of calibration dependencies of sclerometric methods by introducing an additional parameter-concrete humidity. The possibility of combining two sclerometric methods – the elastic rebound method and the shock pulse method is also considered. Data were obtained on concrete samples with a curing time of 25..60 days. Two-parameter calibration dependencies, including concrete humidity as an additional parameter, allowed for all experimental series of samples to reduce the residual mean square deviation of the calibration dependence of elastic rebound and shock pulse methods by 10%..16%, and to consistently provide the minimum acceptable value of the correlation coefficient r = 0.7 for the studied concrete compositions. The influence of concrete heterogeneity on the readings of sclerometric test methods is considered.The developed method of constructing two-parameter calibration dependencies can be recommended for inclusion in the current standards governing the determination of the strength of concrete structures under construction.
Selection of optimal technical solutions for thermal modernization of school buildings
Authors: A. Maksymov  , A. Vakhovych
Published: May 2021

Analysis of the most common design and technological solutions used in thermal modernization, showed the impossibility of choosing the optimal solution for a single enclosing structure only by direct assessment of physical, mechanical and technical and economic characteristics.It is proposed to select the optimal design and technological solution in thermal modernization projects from all possible in two stages. At the first stage, it is necessary to discard those solutions, the implementation of which for this type of building is technically impossible or economically or technically impractical. In the second - to assess the system of indicators that comprehensively characterize the design and technological solution.In the article, based on the analysis of literature sources and the authors' own experience in the development and maintenance of thermal modernization projects, a system of criterion evaluation for structural and technological solutions of thermal modernization is developed. The criterion evaluation system for structural and technological solutions of thermal modernization contains a number of indicators that take into account the physicochemical properties of the insulation, environmental friendliness, reliability and stability of the insulation system, technological factors such as maintainability, seasonality, high quality of work due to system technology, ability to sound insulation, economy, artistic efficiency. The method of expert evaluations for each criterion and sub-criterion determines its weight in the overall evaluation. The system of evaluation of technical decisions of thermal modernization of enclosing designs developed by us provides that the estimation on criteria which have subcriteria is defined as the sum of estimations of subcriteria. The evaluation of the criteria is carried out on a five-point scale. The optimal technical solution is the solution that received the highest score on the total.
Technical advantages of the city sedimentation water reconstruction system
Authors: V. I. Donenko  , O. M. Nazarenko  , I. A. Nazarenko  , M. P. Marchenko  , V. P. Sulima
Published: May 2021

The work designs a system of production components of urban infrastructure to create an energy efficient city. Hydraulic, hydrological, heat exchange processes of interaction of water structure and elements of treatment structures for centrifugal deposition of suspended matter have been investigated. Depending on the degree of contamination, devices for resource recovery are calculated. The duration of recovery operations was investigated. The technological cycle of re-water recovery and the number of cycles of cavitation generator for controlled conditioning of conditionally clean and dirty waters have been determined. Reverse osmosis devices for the recovery of conditionally pure water have been investigated. Categorized potential effluents of industrial waters as appropriate for restoration. Samples of experimental sediments for the needs of the construction industry at operating and supercritical modes of operation of the technological stream were obtained. A mathematical model of the productivity of irrigation of agro-centers in drought conditions with drip irrigation by repeated water has been developed.