bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessment of nutritional status of elderly in rural field practice area of Jhalawar medical college, Jhalawar, India
Authors: Yadav Kamlesh , Dubey Deepak Kumar , Shukla Uma Shankar , Sharma Anubhav
Published: June 2023

Background: Worldwide, the population of elderly people is constantly increasing. Elderly population is at risk of under nutrition due to age related physical, cognitive, functional decline and lack of financial support. Malnutrition contributes to decline in health status, increased utilization of healthcare services and increased mortality. Aim of this study was to assess nutritional status of the elderly by MNA and to find association between nutritional status and socio- demographic profile of elderly.
Methods: After ethical approval, a community based cross sectional study was conducted among elderly people residing at Mandawar village, rural field practice area of JMC, Jhalawar during August to October 2022. Complete enumeration technique was used to enrolled participants in study. Door to door household survey was conducted using predesigned questionnaire. Nutritional status was assessed by using standard mini nutritional assessment questionnaire. The data was analyzed through SPSS28.0 (trail version).
Results: Out of 287 elderlies, 139 (48.4%) were male and 148 (51.6%) were female. According to MNA, 73 (25.4%) were found malnourished while 119 (41.4%) were at risk of malnutrition and 95 (33.1%) were well nourished. A statistically significant (p<0.05) association was found between nutritional status with increasing age, gender, marital status, education, occupation, morbidity, financial dependance and substance abuse.
Conclusions: This study showed that malnutrition has multidimensional background. So, to improve nutritional status of elderly approach should be focus on those who are older, illiterate or low educational status, female gender and financially dependance.
Prevalence of depression and anxiety among polycystic ovarian syndrome patients: a cross-sectional study
Authors: Madhuri V. , Koteswaramma C. H. , Snehika Allampally
Published: June 2023

Background: Polycystic ovarian syndrome (PCOS) is one of the most common Hormonal disorder among women in reproductive age group. According to Indian fertility society prevalence of PCOS ranges from 3.7% to 22.5%. Women with PCOS have experienced adverse social, physical, emotional, and psychological consequences and they are at risk of developing depression, anxiety, sadness, and loneliness which had negative impact on their health. The problem was often overlooked and limited literature is available in this aspect. The objectives of this study was (a) to estimate the prevalence of anxiety and depression among women suffering from PCOS; (b) to assess the socio demographic factors among women with PCOS; and (c) to determine the association between depression, anxiety with clinical manifestations of PCOS.
Methods: A cross-sectional study was conducted among 65 women effected with PCOS. International classification of disease-10, Hamilton depression rating scale and anxiety rating scale was used to assess the depression and anxiety. The required data was collected by semi structured, pilot tested questionnaire in local language. Data collected was analysed using MS excel 2019 and Epi-info version 7.2 software.  
Results: The mean age of the study population was 24.2±4.7 years. The prevalence of depression and anxiety among the study population was 66.1%, and 56.9% respectively. Menstrual irregularities 86.6% was the most common symptom.
Conclusions: Higher prevalence of depression, anxiety was found among the PCOS patients, and associated with clinical manifestations. Thus, an appropriate approach towards psychological management should be implemented.
Long haul COVID-19 and its associated risk factors: a systematic review and meta-analysis protocol
Authors: Agarwal Monika , Pandit Pratyaksha , Khan Maviya , Jauhari Sugandha , Singh Abhishek , Verma Smriti
Published: June 2023

COVID-19 is an infectious disease caused by severe acute respiratory syndrome coronavirus-2 (SARS-Cov-2) first reported in December 2019 in Hubei province of Wuhan, China. Most people infected with COVID-19 disease experienced mild to moderate symptoms or even no symptoms at all, but growing body of evidence has shown that large number of COVID-19 survivors are experiencing multitude of long-lasting symptoms persisting for varied number of periods after the acute phase of infection. This condition is known as long COVID and since July 2021 has been added as a recognized condition that could result in a disability under the American with disability act (ADA). We will undertake a systematic search in PubMed, PubMed Central and Google scholar from December 2019 till June 2022. The study designs to be included will be cross-sectional, case-control, cohort, follow-up, observational studies. No ethical issues are anticipated. Dissemination will be done by submitting article to academic peer review journals. To add into the pool of knowledge of long COVID and provide evidence-based insight, this systematic review was planned to know about the prevalence of long COVID sequalae, commonly reported symptoms by COVID-19 survivors at an interval of 3, 6 and 12 months and possible risk factors attributable to the emergence of these symptoms. PROSPERO registration (CRD 42022340175).
Effects of patient education on knee joint injections and the impact on patient care and satisfaction in rural Guatemala
Authors: Ruan Tiffany , Puga Troy B. , Chaparro Elisa , Schroeder Karson , Tyler Robert , Desai Gautam
Published: June 2023

Background: As the rates of osteoarthritis increase among the elderly population across the world, the number of intra-articular corticosteroid injections has also steadily increased. The objective of this research study was to compare the ratings of anxiety level, pain level, and education about glucocorticoid injections between the group who received expansive education about joint injections and the group who received minimal education about joint injections.
Methods: Each participant was given a pre-injection survey allowing them to rate their anxiety level, pain level, prior education level on knee injections, and duration and severity of symptoms. Each participant completed a post-injection survey following the procedure. Rating data were analyzed using a paired t-test to compare each of the groups to themselves and unpaired t-tests were used to compare the two groups. Demographic and survey data were analyzed using Fisher’s exact test.
Results: Statistical significance was noted when a paired t-test was run between pain levels before and after the knee injection was administered in group A and between pain levels before and after the knee injection was administered in group B (p<0.001). A paired t-test also showed statistical significance when comparing the educational levels before and after the knee injection was administered in group A (p=0.04).
Conclusions: This research study showed that increased education on corticosteroid knee injections prior to the procedure demonstrated increased education on corticosteroid knee injections after the injection and decreased pain levels following the injection in participants with osteoarthritis in rural Guatemala.
Comparative study of the functional outcome of semitendinosus graft versus peroneus longus graft in arthroscopic reconstruction surgeries of anterior cruciate ligament
Authors: Ambulgekar Rajesh K. , Chhabda Gurneet Kaur , Malu Mukesh , Sangnod Pradeep
Published: June 2023

Background: ACL disruption is the commonest ligamentous knee injury among active adults, invariably leading to changes in knee kinematics which are most likely to result in secondary degenerative changes and long-term functional impairment. Thus, due to the ACL's crucial role as the primary restraint against anterior tibial translation, its reconstruction using varying graft options are being extensively studied for better functional outcome.
Methods: In this prospective study, we analysed 30 patients having ACL tear (clinically and radiographically) and treated with arthroscopic reconstruction of ACL. Among these, 15 cases were operated using semitendinosus graft and 15 cases by using peroneus longus tendon graft. The study was conducted in a tertiary care hospital from January 2021 to June 2022 with minimum follow up of 6 months and maximum follow up of 15 months.
Results: Mean Lysholm score (post op) in Group ST was 90.6±3.18 and in Group PLT was 92.2±2.65. The Lysholm Score and IKDC grading between the two groups was comparable and showed no significant difference. Post-Op laxity assessed using the Lachman’s grading showed normal findings in 70% patients, and of the remaining 30% (9 patients), 5 patients from ST group and 4 patients from PLT group showed 1+ laxity at follow up examination.
Conclusions: Arthroscopy assisted ACL reconstruction with peroneus longus tendon autograft provides a steady knee, reduces postoperative donor site morbidity and enables early rehabilitation, similar to the traditional semitendinosus tendon autograft.
Study of outcome of displaced calcaneal fractures by closed reduction and percutaneous internal fixation with multiple k wires and screws
Authors: Kharat Akshay Ravindra , More Dhananjay Eknathrao , Desai Shrikant Sudamrao
Published: June 2023

Background: Calcaneum is the largest of the tarsal bones and the largest bone of the foot. Calcaneum fracture account for 2% of all fracture of the body and 60% of all tarsal fractures. Many calcaneal fractures are work related as they result from a fall from height, especially in male age 35-45 years. In our study we treated the displaced calcaneal fracture with closed reduction and percutaneous fixation using multiple percutaneous K-wires and screw to evaluate their functional outcome.
Methods: The study was conducted as a prospective study at the department of Orthopaedics, Dr. Shankarrao chavan Government Medical College, Nanded, India during the period January 2019 to June 2020. Thirty patients of 20 to 60 years, who underwent surgical fixation for displaced calcaneal fracture using multiple K wires and screws were followed up. Functional outcomes at six month follow up were assessed.
Results: In this study we selected 30 patients with displaced calcaneal fracture admitting in our institute. All patients underwent operative procedure in the form of multiple k wire and cc .screws by percutaneous approach Out of all 30 patients treated with this method had shown excellent results with minimal postoperative complications.
Conclusions: The study with percutaneous K wires and screws for displaced calcaneal fractures showed very good functional outcome. Although it was not free of complications, our study has shown very good results. Technique involve in our study is less invasive, with minimum blood loss, less operative time without soft tissue stripping.
Clinical profile of ocular morbidities associated with systemic lupus erythematosus
Authors: Vasu Aisvarya , Anamalai Radha , Kim Gowtham , Muthukumar Muthayya
Published: June 2023

: Systemic lupus erythematosus (SLE) is an autoimmune disorder involving multiple organs. Ocular involvement occurs in both the active and chronic phases. We have conducted a study to illustrate the ocular inflammations associated with SLE leading to visual morbidity.

: This prospective, descriptive, hospital-based study was conducted on 75 patients with SLE over 1 year diagnosed by the physician based on the Systemic Lupus Collaborating Clinics (SLICC) criteria. These patients underwent complete ocular examination. Ancillary investigations were done for patients with clinically suspected ocular pathology.

: 69% patients had ocular involvement and keratoconjunctivitis sicca (76%) was the most common.42% patients had multiple ocular tissue pathologies. Corneal involvement was noted in 7 patients (14%), comprising of punctate corneal erosions (10%), pannus (2%) and peripheral corneal ulcer (2%), all during the active phase of the disease. 30% patients had episcleritis, diffuse pattern (73%) being the most common and also the presenting sign of SLE in 9% of patients. Retinopathy was seen in 9 patients (18%), vasculitis in 12% being the most common posterior segment association with SLE. The most common cause of defective vision in these patients was steroid induced or complicated cataract (24%). 42% of patients had associated SLE nephropathy.

: Simultaneous and multiple forms of ocular inflammation can occur at any stage of SLE, which could compromise the quality of life of the individual. The onset of uveitis is indicative of active status of the disease. A complete ophthalmic evaluation is an important part of management during the active stage and remission.
Comparison of efficacy and safety of sutureless glue-free versus suture technique for autogenous conjunctivolimbal grafting in primary pterygium excision
Authors: Dahiya Monika , Rathi Manisha , Dua Mohit , Sachdeva Sumit , Dabas Ruchi , Phogat Jitender
Published: June 2023

To compare the efficacy and safety of sutureless glue-free versus suture technique for autogenous conjunctivolimbal grafting in primary pterygium excision.

A prospective observational study was conducted in thirty consecutive patients of primary progressive pterygium after taking their informed written consent and ethical clearance in a tertiary eye care centre of Northern India. Patients were randomly divided equally into group “A” and “B” each constituting fifteen patients. Group A patients underwent suture technique and group “B” patients underwent sutureless technique for conjunctivolimbal graft placement. Comparison of both groups was done in terms of intraoperative time, postoperative symptoms and recurrence over a period of one year. Data was compiled and entered into Microsoft Excel software and SPSS version 21.0 was used for data analysis.

The mean duration of surgery was 42 min and 30 min in group A and B respectively and this difference was found to be statistically significant (p=0.0001). On 1 postoperative day, pain and foreign‐body sensation was present in 12 patients in group A, while only 1 patient of group B had these symptoms and this difference was statistically significant (p = 0.00014). Postoperative hyperaemia was seen in 8 patients of group A and 6 patients of group B which was statistically insignificant (p = 0.564). Only two patients in group A had conjunctival chemosis while no patients in group B developed chemosis, and the difference was statistically insignificant (p = 0.964). Subconjunctival haemorrhage was seen in 2 patients of Group A and 1 patient of Group B which resolved over a period of 2-3 weeks. Conjunctivolimbal graft was found to be more stable in group A while it was misplaced in 1 patient of group B and the difference was statistically insignificant (p = 1.000). Only 1 patient of group A developed suture related complication i.e suture granuloma. Over a period of 1 year follow up, only 1 patient of group A had recurrence of pterygium.

Sutureless glue-free technique is a time saving, cost effective and better surgical modality in comparison to conventional suture technique for autogenous conjunctivolimbal grafting in primary pterygium resection.
A comparative study: Changes in endothelial cell count in phacoemulsification with temporal clear corneal incision vs superior scleral incision in grade II & III cataract
Authors: Choudhary Pooja , Kulariya Anand , Chouhan Arvind
Published: June 2023

Endothelial cell loss is a key indicator of the quality of anterior segment surgery like cataract surgery. The amount and integrity of corneal endothelial cells are the two most essential factors determining corneal transparency.

Aim of this study was to compare the endothelial cell loss between the superior scleral tunnel incision and the temporal clear corneal incision for phacoemulsification.

Prospective observational study.

 This prospective observational study included 50 patients with grade II and III cataracts undergoing phacoemulsification with a temporal clear corneal incision and 50 patients with a superior scleral tunnel incision. Specular microscopy was used to count ocular endothelial cells before and one month after the surgery.

The mean endothelial cell loss was significantly higher with temporal clear corneal incision (14.91% ± 5.13%) in comparison to the superior scleral tunnel incision group (6.58% ± 2.06%).

A superior scleral tunnel incision is associated with less postoperative endothelial cell loss as compared to a temporal clear corneal incision and could provide a better visual outcome.
Assessment of skills and knowledge in clinical ophthalmology: A survey among undergraduate medical students during internship in SKNMC and GH, Pune
Authors: Mali Madhura Milind , Nitnaware Mithila Madanlal , Bhide Rhuta Dattatraya , Kolte Srushti Sunil
Published: June 2023

Internship is the last year of undergraduate medical training wherein a graduate is exposed to actual patients, conduct varied tasks and acquire skills under supervision of a faculty so that medical student becomes capable of performing clinical skills independently. In India interns have a compulsory 15 days posting in the subject of Ophthalmology. In this study we assessed the clinical skills and knowledge of undergraduate students using a structured questionnaire.

A detailed questionnaire based study was conducted which had four parts: (1) clinical skills (2) diagnosis of anterior segment diseases (3) diagnosis of posterior segment diseases and (4) ocular emergencies and sight threatening diseases. Interns were asked to fill this questionnaire before and after completion of 15 days training.

: A statistically significant improvement was found i assessment of clinical skills, anterior segment eye diseases and ocular emergencies; whereas assessment of posterior segment diseases showed no statistically significant improvement.

The undergraduate teaching program in Ophthalmology seems to be adequate in diagnosis of anterior segment eye diseases and ocular emergencies; though more focus is required in training of diagnosis of posterior segment diseases and certain ocular emergencies. There is a need of change in the structure of training programs of undergraduate students in order to improve their clinical skills and knowledge of appropriate referral after graduation during their independent practice.
Prevalence, risk factors and severity of retinopathy of prematurity in preterm infants in a tertiary care hospital in rural Karnataka
Authors: Shaik Raheemunnisa
Published: June 2023

Retinopathy of prematurity (ROP) is a condition which is one of the major causes of preventable childhood blindness. ROP may develop in premature new-borns due to avascular or incompletely vascularized retina at birth which are prone to damage. The purpose of this study is to investigate the prevalence of retinopathy of prematurity (ROP), as well as its risk factors and severity, among newborns who were admitted to and screened at a tertiary care facility that serves a rural community.

A cross-sectional study was conducted for a period of 1 year. All infants born prematurely who were admitted to the hospital and had a birth weight of less than or equal to 1500 g and/or less than 32 weeks of gestation were included in the study. Additionally, babies born between 1501-2500 grams and/or 33-35 weeks who were at a higher risk were also included. Under aseptic conditions all preterms were screened with RetCam in NICU of a tertiary hospital situated in rural area in Karnataka.

224 preterm babies were screened for ROP. No ROP was noted in 185 babies (82.59%), 9 babies had stage 1 (4.02%), 21 babies stage 2 (9.38%), 9 babies had stage 3 ROP (4.02). No infant developed stage 4 and stage 5 ROP. Prevalence of ROP is 17.41% in our study. Low birth weight (LBW), Very low birth weight (VLBW), Respiratory Distress Syndrome and sepsis are found to be clinically significant in this study.

In this study, the prevalence of ROP is 17.41%. LBW, VLBW, Respiratory Distress Syndrome and sepsis are found to significant risk factors. Early screening and timely appropriate treatment of ROP can prevent from causing childhood blindness.
The study of anisometropia and its association with amblyopia in school going children
Authors: Mishra Shraddha , Pandey Ashish , Dubey Shubhra , Jain Shefali
Published: June 2023

To determine the prevalence and type of anisometropia among school going children and to study association of degree of anisometropia with severity of amblyopia.

A hospital based cross-sectional study carried on 500 school going children up to 10th grade (Age group:- 5 years to 16 years) selected by non-probability convenient sampling according to the inclusion and exclusion criteria. The clinical profile of these children was evaluated in department of ophthalmology, P.D.U Govt. medical college, Rajkot and they underwent detail visual assessment and ophthalmic examinations including measurement of uncorrected visual acuity, best corrected visual acuity, auto-refraction, retinoscopy, subjective correction and detailed squint evaluation, if present. During period of November 2019 to February 2021 during school health programme.

Total of 500 school going children were enrolled in the study, out of which 221(44.2%) were females and 279 (55.8%) were males. The prevalence of anisometropia in our study was 23.8% (119 childrens out of 500 childrens). Out of total 119 childrens, 47 were males (39.5%) and 72 were females (60.5%). Maximum patients with anisometropia (n=54 out of 119 patients) were having compound hypermetropia. Prevalance of anisometropia increased as the age increased, till age of 14 years, and then again there occurs a declining trend. X2 = 10.139, p value = 0.051 and it was statistically significant. In our study, prevalence of amblyopia was 8.8% (n=44 out of 500 patients) and among amblyopic patients, 59% patients (n=26 out of 44 patients) had amblyopia due to anisometropia. Out of 26 patients with amblyopia due to anisometropia, 73.1% patients (n= 19 out of 26 patients) were anisohypermetropic and 26.9% patients (n= 7 out of 26 patients) were anisomyopic. In our study, depth and prevalence of amblyopia increased as the degree of anisometropia increased and it was found to be statistically significant(p=0.045).

Our study concludes that the prevalence of anisometropia was high (59%) among the amblyopic patients with maximum patients having compound hypermetropic anisometropia. Depth and prevalence of amblyopia increased as the degree of anisometropia increased.
A study on epidemiology, clinical profile, management, and outcome of Covid-19-associated rhino-orbital-cerebral mucormycosis in a tertiary hospital in Tamil Nadu
Authors: Priya Hannah Ratna , Periasamy Sumathi , Sekar Shanmugapriya
Published: June 2023

: The main objective of the study is to estimate determine the patient demographics, comorbidities, and medications used to treat COVID-19, presenting symptoms and signs, and the outcome of management of COVID-19-associated rhino-orbital-cerebral mucormycosis (ROCM).

: A descriptive cross-sectional study was conducted among 50 patients admitted and suspected with Mucormycosis in 3 months duration from May 21 to July 21 Covid pandemic at a tertiary hospital in Villupuram. Written informed consentwas taken from patients or nearest of kin. This study was approved by Institutional Ethical Committee of Villupuram.

: 84% patients among suspected mucormycosis were found to be diabetic, with 70% being males and 61.9% had covid history either covid positive or post covid status. About 60% of suspected mucor cases had h/o oxygen treatment and almost 44% had h/o steroid treatment for their covid treatment. Clinically 40% had extraocular muscle involvement in the form of restricted eye movement to total ophthalmoplegia and mortality was ranging from 37.5-57.14%. Those with proper glycemic control and initiation of treatment at appropriate time with endoscopic sinus debridement and antifungal therapy showed better recovery.

: The study reveals that COVID-19 associated Mucormycosis has risen dramatically due to interplay of uncontrolled diabetes and in-appropriate corticosteroid use leading to pathogenic invasion and adverse outcomes. The infection has caused high morbidity and mortality among covid positive than post covid patients. It could be minimized by strict diabetic control under appropriate insulin dosage, wise use of steroids/oxygen and timely intervention based on clinical evaluation rather than waiting for investigations could minimize the complications from the infection and shorten the hospital stay.
Prospects for the Application and Development of Computer vision Technologies
Authors: Zhilenkov Anton
Published: June 2023

The paper presents examples from different fields of human activity in which computer vision technology is used. It is analyzed what is machine vision, how it differs from computer vision. The advantages and disadvantages of the technology are touched upon, an overview of the system components and methods for processing machine vision is presented, and the areas in which it is applied are explored. The study shows how relevant and in demand computer vision is, as well as the ways of its progress in the near future.
The issues of application of machine vision systems in monitoring the implementation of safety protocols, in quality management are touched upon. Here, machine vision is implemented as an automated visual control and quality control of production processes. The application of computer vision systems in transport for the classification of vehicles, their counting, traffic analysis, detection of traffic violations: speeding, running a red light, not allowing a pedestrian is considered. This improves road safety. Computer vision is used to detect distracted driving: drowsiness, daydreaming, distraction; up to the determination of the sobriety of the driver. The use of computer vision to monitor order in large cities is affected by determining the deviant behavior of citizens.
Imitation model of the labour market behaviour of graduates of secondary vocational education institutions
Authors: Gaisina Amina
Published: June 2023

The structure of the needs of enterprises for workers is undergoing changes, and the system professional education must adapt as quickly as possible to the new realities of the labor market. For a prompt response to current personnel requests, imitation model of the behavior of graduates in the labor market is proposed, taking into account the direction of training (DT) of system professional education, the need for workers by the type of economic activity (TEA), presented in the form of a matrix of professional and qualification compliance with TEA-DT and a sociological survey graduates. The imitation model is based on an agent - oriented approach, where agents are graduates of colleges, enterprises, enlarged by the type of economic activity and authorities, given exogenously. The software implementation makes it possible to imitate the real processes of employment of college graduates, taking into account vacancies in the type of economic activity and direction of training. The use of the simulation model will allow to regulate the emerging imbalance between the offers of the secondary schools and the needs of enterprises.
Blockchain para Rastreabilidade de Alimentos Orgânicos: Um Estudo Sobre a Produção de Espumante
Authors: Mello Marcelo Cristiano de , Ferrazza Adriana Cioato , Secchi Morgana
Published: June 2023

As empresas da cadeia de alimentos orgânicos, que visam melhorar a rastreabilidade de alimentos com a tecnologia blockchain, enfrentam decisões importantes relacionadas com as características da cadeia de valor orgânico, que abrange a otimização da colaboração dos parceiros da cadeia e a seleção de quais dados capturar nessa ferramenta. Este estudo avalia a aplicação da tecnologia blockchain para aprimorar a confiança do consumidor nas cadeias alimentares “da fazenda ao garfo” com base na qualidade e certificação de produtos orgânicos, especificamente para espumantes. A metodologia decorre de um estudo de caso em uma propriedade rural, localizada em Garibaldi-RS, Brasil. Para análise dos dados, utilizou-se a metodologia de análise de conteúdo. Com base no estudo desenvolvido, foi possível identificar que existem atributos da tecnologia blockchain que podem contemplar as expectativas do produtor de espumantes orgânicos, participante da pesquisa. Blockchain atribui rastreabilidade em tempo real ao processo de fabricação, tornando-o transparente e seguro, além de propiciar vantagens econômicas e competitivas à empresa produtora.
Influência de juntas frias no comportamento de elementos de concreto armado sob flexão
Authors: Guimarães Cleidson Carneiro , Filho Raimar Ramos de Macedo , Aragão Helio Guimarães , Coelho Vinícius Almeida
Published: June 2023

É muito difícil fundir toda a estrutura monoliticamente sem que se empregue juntas frias, principalmente no plano de interseção da concretagem das vigas e da laje. Nesses casos, emprega-se, comumente, concretar a viga até a altura da laje e o preenchimento do restante da viga ocorre ao concretar a laje. Esta técnica permite a formação de junta fria na interface entre o concreto novo e o já existente, na viga. Esse trabalho avaliou a interferência da presença de juntas de concretagem no comportamento mecânico das vigas moldadas com e sem junta fria. Para o lote das vigas com junta fria, um grupo foi tratado com argamassa estrutural como elemento de ligação do substrato ao novo concreto. O deslocamento das vigas, quando submetidas à flexão de três pontos, com junta foi comparado com o da viga referência, sem junta fria. Os resultados demonstraram que a presença de juntas não interfere expressivamente no comportamento mecânico nos elementos estruturais ensaiados no Estado de Limite de Serviço (ELS) e Estado de Limite Último (ELU).
Investigação patológica e análise de estabilidade de um muro de arrimo em concreto armado
Authors: Ribeiro Kátia Daniela , Augusto Carlos Henrique José
Published: June 2023

As obras de contenção são estruturas utilizadas com a finalidade de estabilizar encostas e/ou aterros de solos. Essas estruturas podem ser compostas de diversos materiais e geometrias, dependendo da condição e ambiente que forem empregadas. Em Arcos (MG), após um intenso período chuvoso ocorrido entre 2019 e 2020, um muro de arrimo localizado no complexo de uma indústria cimenteira apresentou diversas patologias no trecho 3 de sua estrutura, que colocaram em dúvida a sua estabilidade. Neste sentido, o presente trabalho objetivou avaliar as manifestações patológicas ocorridas e investigar, por meio de pesquisa em campo e bibliográfica, quais os principais fatores que influenciaram o evento ocorrido, bem como propor uma terapia para intervenção da estrutura. A verificação da estabilidade do muro revelou que a capacidade de carga da fundação, juntamente às deficiências observadas no sistema de drenagem, foram as causas mais prováveis para a ocorrência das patologias verificadas no muro. A implementação dos reforços estruturais e a construção de um novo sistema de drenagem para o muro são propostas que garantirão a integridade, segurança e estabilidade da estrutura.
Formação de Professores para EAD: uma Análise Considerando os Domínios de Conhecimento do Modelo TPACK
Authors: Ribeiro Priscilla Ramos Lara , Nunes Piedade João Manuel
Published: June 2023

O quadro Conhecimento Tecnológico Pedagógico do Conteúdo, do inglês Technological Pedagogical Content Knowledge - TPACK, procura compreender a base de conhecimentos necessária aos professores para que integrem adequadamente as tecnologias em suas práticas. Assim sendo, esta pesquisa investiga as contribuições do TPACK como referencial teórico para programas de formação de professores na área da Educação a Distância (EaD). Verificou-se o impacto de um curso de especialização voltado para a docência em EaD, ofertado por uma instituição pública de ensino superior brasileira (IES), na autoavaliação do conhecimento TPACK dos cursistas, pós-graduandos de uma das universidades públicas conveniadas a esta IES, na integração das Tecnologias de Informação e Comunicação (TIC) em suas práticas docentes. Optou-se por uma abordagem quantitativa, com a aplicação de um questionário com 41 itens, construído e validado exclusivamente para o estudo. Os resultados evidenciam que os participantes (1) consideram a formação obtida como satisfatória; (2) apresentam os maiores níveis de confiança no domínio de conhecimento do conteúdo e suas intersecções; (3) sentem-se mais confortáveis em usar a tecnologia para fazer ciência do que para ensinar e (4) possuem a idade como único dado sociodemográfico que influencia o TPACK. A partir destes resultados, foi possível detectar as demandas formativas dos participantes e vislumbrar futuros redirecionamentos acerca da matriz curricular do curso em análise.
 
Palavras-chave: Educação a distância. Tecnologias de informação e comunicação. Conhecimento tecnológico pedagógico do conteúdo. TPACK.
Práticas Musicais de Multiletramento Mediadas por Plataformas Digitais: uma Análise Multimodal da Plataforma Digital Yousician
Authors: Araújo José Magnaldo de Moura , Junqueira Eduardo Santos , Barros David Priscila
Published: June 2023

Este artigo analisa a plataforma digital de aprendizagem musical Yousician, na perspectiva da teoria dos gêneros textuais, segundo Marcuschi (2002) e dos multiletramentos, à luz de Cope e Kalantzis (2009). A ascensão das plataformas digitais tem contribuído para o surgimento de diversos serviços de aprendizagem musical interativo-digital, fazendo-nos refletir sobre as possibilidades existentes nesses ciberespaços de práticas musicais. A partir de uma pesquisa exploratória, os parâmetros de identificação de gêneros no ambiente virtual de Marcuschi (2002) e as categorias de multimodalidade de Cope e Kalantzis (2009) foram utilizados para situar o Yousician como uma plataforma digital para a construção de significados e práticas. Os resultados alcançados permitiram compreender que as práticas de multiletramentos dos usuários do Yousician transgridem as instruções programadas do sistema e articulam outros cibercontextos, para compensar as limitações educacionais, linguísticas, tecnológicas e temporais da plataforma digital. Os resultados também evidenciaram os diferentes papéis assumidos pelos usuários enquanto aprendizes, mediadores e colaboradores na construção de saberes em rede.
 
Palavras-chave: Plataformas digitais. Multimodalidade. Multiletramentos. Gênero virtual. Aprendizagem musical interativo-digital.
As Limitações da Educação Básica Brasileira Durante a Pandemia da COVID-19
Authors: Ribeiro Victor Barbosa , Silva Andressa Stephanie Fernandes , Santos Nicoli Brandão dos , Teixeira Renata Plaza
Published: June 2023

Em dezembro de 2019, foi notificado, na China, o primeiro caso do mundo de COVID-19. Já em março de 2020, em função dessa doença, as escolas começaram a ser fechadas no Brasil. Diante desse contexto, o presente estudo teve como objetivo verificar sob a óptica dos professores da Educação Básica brasileira se a educação brasileira estava preparada para toda essa conjuntura promovida pela pandemia da COVID-19. Para tanto, foi aplicado um questionário estruturado em um número máximo possível de professores. A divulgação do estudo perdurou entre os meses de junho e agosto de 2020, via Facebook e Instagram, e teve a intenção de entrevistar uma amostra de conveniência de pelo menos 500 professores. Foi identificado que grande parte deles não estavam preparada para o ensino remoto emergencial (ERE) e que não tinham estrutura de trabalho adequada em suas casas para suas ações.  Além disso, relataram que boa parte dos estudantes não participaria ou participaria do ERE e demonstraram receio quanto à possibilidade de aglomerações e contaminação pela COVID-19 em escolas, assim como ansiedade e preocupação quanto ao ERE. Sugere-se que o contexto analisado é suficiente para promover desgastes emocionais e sobrecarga de trabalho. É intuitivo concluir ser necessário que os órgãos governamentais desenvolvam políticas de acompanhamento próximas aos professores, instituindo programas de acompanhamento psicológico, bem como que criem políticas de capacitação em ferramentas tecnológicas de forma contínua e retomem mais políticas de investimentos em educação, melhorando os processos de ensino-aprendizagem e reduzindo riscos de piora das condições de trabalho docente.
 
Palavras-chave: Educação. COVID-19. Pandemia
Step-by-step simulation of wear of working surfaces in roller bearings
Authors: Klebanov Ya. M. , Murashkin V. V. , Brazhnikova A. M.
Published: June 2023

The purpose of this work was to develop effective methods for calculating the wear rate of raceways and roller bearings under dynamic loads. The wear of the working surfaces of rolling bearings in many practical cases is an important critical factor affecting their performance and durability. However, only a limited number of publications are devoted to this issue. In most of them, Archard's law, which has been experimentally confirmed during hydrodynamic friction of bearing steels, is used to calculate the wear rate of the contacting surfaces. Based on this law, the article presents a method of direct step-by-step calculation of the wear rate at variable contact loads and sliding speeds. In accordance with it, the change in the normal force, sliding speed and thickness of the oil film in contact is determined in the dynamic calculation of the bearing, and the finite element method is used to calculate the contact pressure field. The multi-mass model of bearing dynamics includes a contact friction model that allows adequately reproducing the conditions of hydrodynamic contact of solids. The direct calculation method involves a large number of calculations that make the impact of individual factors on the wear rate opaque. Therefore, along with it, a method for calculating the wear rate by averaged parameters is proposed. Using these two methods, the wear calculations of the raceway of the inner ring and the rollers of a double-row tapered roller bearing were performed. The comparison of the results confirms the acceptable accuracy of the calculation according to the averaged parameters.
Method of individual selection of parts for selective assembly of electrohydraulic servo drives
Authors: Medvedev A. V. , Khalatov E. M.
Published: June 2023

A method for selecting parts and assembly units (hereinafter briefly referred to as parts) in sets for assembling a batch of electrohydraulic servo drives is presented, based on the measured (individual) mechanical and hydraulic characteristics of the parts. The preparatory stage is described: construction of a mathematical model of the product, determination of the parameters of parts and adjustments that have the greatest impact on the parameters of end products, formation of a system for assessing the quality of products in the batch, mathematical formulation of the task of selecting parts. The task of selecting parts is formulated as the assignment problem in the maximin formulation. A deterministic algorithm for solving the problem is presented, based on the branch and bound method and taking into account the fact that adjustments are made during the assembly of drives. A significant reduction in the number of steps (iterations) when searching for the optimal distribution of parts across assembly sets achieved due to the chosen mathematical formulation of the task, as well as due to the chosen strategy of selecting parts in the next assembly set. We suggest that an assembly set should include, first of all, the most troublesome parts the parameters of which do not allow obtaining a set, the projected quality indicator of which will be higher than the established value. At the same time, the negative impact of these parts on the product parameters is compensated by combining them with other parts in one assembly set. The results of mathematical modeling of assembling 992 drives with random formation of assembly sets and with individual selection of parts are presented. Modeling shows that as a result of implementing individual selection of parts in accordance with the described method, a significant reduction in the spread of parameters of end products within batches can be expected, as well as improvements in functional performance of the products. The presented method of individual selection of parts can be used in the assembly of various products.
Development of a model for determination of preloads on blade shrouds
Authors: Pechenina E. Yu. , Kudashov E. V. , Pechenin V. A.
Published: June 2023

The article presents a digital model for calculating the change in the angles of incidence of compressor rotor wheel blades that characterize tightness. The input parameters for the model are the geometric deviations of the disc slots and blades of the set. The calculation is based on the modeling of joints using the finite element method. To automate the modeling, a parametric design model of the blade created in the CAD module of the NX program is used; a calculation automation program created in the MATLAB environment and an algorithm for converting deformations at points obtained in finite element method into angles. The initial data and the resulting parameter values are stored in spreadsheets. Experimental studies have been carried out, including measurements of the disk and blades of the impeller, their assembly and measurement of interference. A Gaussian filter was applied to process the results of angle measurements. The tightness of the set under consideration was calculated using the developed model. The results showed that the limiting simulation error amounts to 16% of the value of experimental data; the index of correlation between the simulated and experimental data was 0.71.
Assessing the Change in Psychosocial Stress of Fireworks Workers of West Bengal During the Pre-Pandemic and During COVID-19 Pandemic
Authors: Laskar Payel , Ganguly Subhadeep , Hossain Zakir Md
Published: June 2023

The fireworks industries of South 24 Parganas, West Bengal, are centuries-old, unorganized cottage industries. The goal of the current study was to evaluate how psychosocial stress of fireworks workers of Bengal had changed during the COVID-19 pre-pandemic and during pandemic period, and to determine the underlying causes of it. 152 male fireworks workers of varying ages were chosen for this purpose. To measure the psychosocial stress of fireworks employees, the Job Content Questionnaire (JCQ) based on Karasek’s Demand-Control Model was used. A shortened Social Readjustment Rating Questionnaire (SRRQ- Holmes and Rahe, 1967) was followed to measure the life change value. The socioeconomic status related to psychosocial stress was also measured along with food habits. After analyzing psychosocial factors and outcomes, it was determined that financial condition and job stability of fireworks workers worsened notably during pandemic. There were prevalence of musculoskeletal disorders and lack of health awareness among them. Though, they were benefitted by different government schemes, low income and job stress led to increased psychosocial stress during the pandemic.
Design and Implementation of a Programming Automatic Assessment System in Jupyter Notebook
Authors: Go HakNeung , Kim Seong-Won , Lee Youngjun
Published: June 2023

Learning programming is challenging. So, computer educators have developed various tools to help students. In this paper, we have developed a tool that combines the advantages of a Programming Automatic Assessment (PAA) system and Jupyter Notebook (JN) to support learning programming. The design direction of this system is free to use, easy to set up, and supports interactive computing. The Programming Automatic Assessment in Jupyter Notebook (PAAinJN) is available free of charge using the assessment module released on Git and the personal JN. The initialization is completed by executing in a code cell with two lines of code that downloads and executes the assessment module. In an interactive computing environment, presenting problems, writing code to be evaluated, and evaluating code can be executed in the code cells, and the problems and the results of the assessment are presented in the code cell outputs. The performance was verified by the examples presented in a high school informatics textbook using the programming automatic assessment system as teaching learning material. In addition, we propose a way to develop teaching-learning materials using PAAinJN in consideration of teachers and students and a way of distributing and collecting teaching-learning materials using the free Learning Management System. PAAinJN is expected to help students learn programming by eliminating assessment and feedback delays through PAA while learning to program in an interactive computing environment.
Cocoa Pod Husk (CPH) for Biomass on Bioethanol Production
Authors: Rahman Syifa Afifah , Meryandini Anja , Juanssilfero Ario Betha , Fahrurrozi -
Published: June 2023

Cocoa pod husk (CPH) is an underutilized agricultural lignocellulosic biomass. CPH and its contents are considered suitable to be used as raw material in the production of 2G biofuels. Various hydrolysis methods and processing are still being developed and have not yet been well studied. This study aimed to investigate the efficiency of hydrolysis process using microwave irradiation AND the stress tolerance phenotype of yeast. The pretreatment of CPH biomass was carried out using hydrogen peroxide (H2O2). The chemical and structural component of CPH was analyzed before and after pretreatment. The results showed that H2O2 reduced up to 34% of lignin and increased the solubility of this component. Pretreated CPH powder was hydrolyzed by combining 1M H2SO4 and microwave-assisted hydrolysis, resulting in high glucose-xylose concentration within short reaction times. The highest glucose-xylose concentrations from CPH were 3.40 g/L â€“ 0.94 g/L within 12 minutes at 180 Â°C. The oxidative-fermentative test showed that yeast Y003 could ferment xylose. The stress tolerance test showed that S. cerevisiae Y003 tolerance up to 40 Â°C temperature, up to 14% ethanol concentration, and up to pH 3 under pH stress. The highest glucose-xylose consumption by S. cerevisiae Y003 was observed under the treatment of E2 (93.59%), with ethanol production up to 1.85 g/L. Fermentation efficiency was 85 â€“ 97%, indicating that this research succeeded in producing bioethanol from CPH biomass. Cocoa pod husk is a promising resource for further development of bioethanol production.
La nueva regulación del delito de uso fraudulento de medios de pago distintos del efectivo al albur de la reforma de 22 de diciembre de 2022: Un análisis del art. 249.1 b) y 249.2 b) del CP
Authors: Abadías Selma Alfredo
Published: June 2023

Indudablemente, nos ha tocado vivir en unos tiempos complejos y cambiantes que afectan a muchas facetas de nuestras vidas, y por supuesto a la realidad delictiva. Desde una contextualización y ejemplificación detallada de los cambios históricos que nos han llevado al momento actual, en el presente artículo pretendemos abordar la reforma del CP de 22 de diciembre de 2022, centrándonos en el art. 249.1 b) y 249.2 b), que penaliza el uso fraudulento de los medios de pago distintos del efectivo metálico, y que toma sustento en la Directiva 2019/713, de 17 de abril, del Parlamento Europeo y del Consejo, sobre la lucha contra el fraude y la falsificación de medios de pago distintos del efectivo, por la que se sustituyó la Decisión Marco 2001/413 JAI, del Consejo. La citada y necesaria reforma del delito de estafa del art. 249 CP, que entendemos que proviene de una obsolescencia causada por los avances tecnológicos raudos e imparables de los últimos tiempos, incorpora una serie de medios de pago indeterminados o abiertos «…cualquier otro instrumento de pago material o inmaterial distinto del efectivo o los datos obrantes en cualquiera de ellos», que aperturan cierta incertidumbre en relación con la seguridad jurídica y su eficacia real en la lucha contra el delito, y por ende para el servicio a la ciudadanía, y sobre todo, para aquellos colectivos más vulnerables. Ello requiere una reflexión que toma como base la jurisprudencia y la doctrina científica más autorizada para realizar una exégesis crítica del tipo y ofrecer propuestas concretas que aquí proponemos.

Recibido: 01.02.2023Aceptado: 13.06.2023