bluuebunny/crossref_metadata_2025 huggingface dataset:
Restoring rotational stability following anterior cruciate ligament surgery: single-bundle reconstruction combined with lateral extra-articular tenodesis versus double-bundle reconstruction
Authors: Legnani Claudio , Borgo Enrico , Macchi Vittorio , Ventura Alberto
Published: June 2022

Aim:
To compare the outcomes of patients who underwent single-bundle (SB) anterior cruciate ligament (ACL) reconstruction combined with lateral extra-articular tenodesis (LET) with the outcomes of those who underwent double-bundle (DB) ACL reconstruction.
Methods:
16 patients who underwent ACL hamstring SB reconstruction combined with LET (Coker–Arnold modification of the MacIntosh procedure) were retrospectively compared with 20 patients who underwent hamstring DB reconstruction at an average follow-up of 6.2 years. Assessment included Lysholm and International Knee Documentation Committee scores, objective examination and instrumented laxity test.
Results:
No complications were reported. Mean Lysholm and International Knee Documentation Committee scores significantly increased from preoperatively (p < 0.05). No differences were reported between the two groups with regard to point scales, anterior tibial translation and pivot-shift test (p = not significant).
Conclusions:
Both DB ACL reconstruction and combined LET and autologous hamstring SB ACL reconstruction are effective at providing satisfying functional outcomes and restoring rotational stability.
Performance Evaluation and Wetting Pattern Estimation of Drip Irrigation
Authors: Mohapatra Sangeeta , Jena Sonam , Mohapatra Susandhya , Swain Prof. Sushree Monali , Swain Dr. Satyananda
Published: June 2022

Abstract: Population growth is increasing day by day, which leads water scarcity and food scarcity. There is big challenge on food security and crop production to maintain the demand. One solution to this problem is the use of drip irrigation system which improves profitably by increasing crop yield and quality while reducing costs from water, energy, labor, chemical inputs and water runoff. The experiment was conducted in the Gangapada farm, Khorda, Odisha. The actual discharge of the dripper having theoretical capacity 8lph was measured and the result varied in the range of 6.8 -8.15 lph. The wetting pattern also measured by constructing three beds having size 2.6 × 2 × 1 ft. The average wetting pattern was found of are 43.5, 36.3,26,12,0 cm at the depth of 0, 10, 20, 30, 40 cm respectively. The moisture content was also measured at different depth to study the variation at different depth using 8lph dripper. Keywords: Drip Irrigation, Wetting pattern, Discharge
Optimizing the role of youth cadre through education about the impact of drug abuse on adolescents
Authors: Isrofah I , Prastiwi Dani , Handoko Redy
Published: June 2022

Adolescents are a very vulnerable age at risk of drug abuse. Through the empowerment of youth Posyandu (health center) cadres in education about the impact of drug abuse, it is expected to be one of the promotive and preventive efforts so that teenagers are not entangled in drug abuse. This community service program aimed to provide socialization to youth Posyandu cadres about the dangers of drug abuse. This activity was attended by 40 participants who had previously taken the Covid-19 screening test to ensure this activity was safe to do at the Sumurjomblangbogo Village Hall, Pekalongan. Pretest and Posttest were conducted to measure the knowledge of cadres before and after being given education. The results of this community service, can increase the knowledge of cadres from the majority of good knowledge (70%) to very good (90%). Similar activities are needed to develop youth Posyandu cadres to have health maintenance skills. Of course, it takes support and participation from residents and village officials.
Floating hotels in the structure of riverside cities
Authors:   Moscow State University of Civil Engineering (National Research University) (MGSU), Klochko Asmik R. , Klochko Aleksey K.
Published: June 2022

Introduction. The river is the most important strategic city-forming resource, a historical factor of life support, economic development, trade, and tourism. The role of the backbone elements that form urban ensembles is always assigned to the areas along river banks. Hence, inefficiently used urban riverside territories are always conspicuous and disharmonious. Hotels on urban embankments is a stable trend that can increase the tourist attractiveness of cities, and therefore it requires a systematic and professional study. Materials and methods. The analysis and synthesis, based on foreign and domestic research and literary sources and design materials, prove that over the past decades, areas along river banks have been actively involved in the life of cities. In many cities complex, systemic programmes for the reconstruction of river bank areas are being developed. Results. The research results are presented in the form of an analysis of the world experience and relevant issues of the formation of public zones on embankments. The conditions for the construction of architectural facilities along river banks must be determined by the concept of transforming the embankment and the general principles of urban development. Trends in the arrangement of riverside areas and their general architectural principles are identified. The features and the international experience of the architectural design of floating hotels, the conditions for the interaction between water spaces and the structure of these hotels are also considered. Conclusions. The huge image potential of embankments is a significant factor for the tourist attractiveness of these areas. The insufficient legislative support of such facilities has been identified; the legislation, governing the operation of hotels, is to be revised to conform to the present-day reality.
Theoretical and experimental studies of steel-reinforced concrete structures that have bent steel sections
Authors:   Moscow State University of Civil Engineering (National Research University) (MGSU), Akhramochkina Tatiana I.
Published: June 2022

Introduction. The main problem of the behaviour of composite structures is the method of combining materials that have different qualitative characteristics. In the case of collaboration of concrete and steel, the load-bearing capacity of the structure increases, while the consumption of materials decreases. Thanks to these advantages, the use of steel-reinforced concrete floor slabs is more and more popular. A theoretical study has made it possible to assess the load-bearing capacity of a floor slab. Materials and methods. A theoretical analysis of the bearing capacity of a composite floor slab is proposed. Four samples, that consisted of a galvanized steel plate embedded in a concrete parallelepiped, were used to conduct experimental studies. Rectangular plates had different types of surface: smooth, perforated with holes, with stamped “pins”, and with bolted connecting elements. Results. The analysis of the bearing capacity of a steel-reinforced concrete floor slab, that has bent profiles, was performed. The deformation dependences of the experimental samples were obtained; the graphs describing the dependence of displacement on the load for the four types of surfaces are made; the values of the load at which samples fail, and the dependence of the breaking load on the structure of the embedded part of the plate are identified. Conclusions. The analysis of the bearing capacity of a steel-reinforced concrete floor slab, that has bent steel sections, has shown that the use of light steel thin-walled beams is possible if spans correspond to residential and public buildings. The results of the experiment allow to conclude that the collaboration of concrete and a steel beam is possible without any additional elements in the composite structures that have bent sections. Adhesive properties of materials and the stamped part of the section can take the shear forces arising in structures.
Similarity criteria of an autonomous pumping system and their impact on energy efficiency indicators
Authors:   Kaliningrad State Technical University (KSTU), Ahmedova Natal’ya R. , Naumov Vladimir A.
Published: June 2022

Introduction. The authors have formulated a system of equations to describe the liquid flowing in a self-contained pumping system (SPS) that has a centrifugal pump (CP). To solve the problem, it is necessary to take into account a change in static pressure, features of the hydraulic resistance of pipes, and the influence of temperature. The authors have shown that the flow under study has two similarity criteria in the case of a certain characteristic flow rate. The authors have also assessed their influence on the energy efficiency values of a basic hydraulic circuit. Materials and methods. The authors make a hydraulic analysis of an SPS that has pump 1K 50-32-125, whose characteristics are presented in the technical specification. A mathematical model, based on the Bernoulli equation for an unsteady flow, was developed to solve the problem. Results. The authors solve the non-steady problem of pumping liquid through the central heating system into the SPS if the liquid level is variable in the self-similar (quadratic) resistance range. For the case when Str = 0 and Str is the analogue of the Strouhal number, the authors find the analytical expression of pumping time for the pre-set amount of liquid and the value of criterion Θ (a dimensionless complex value linking the difference between the head in the central heating system and the initial static head in the event of zero supply, the steepness of the pressure characteristic and the hydraulic resistance of the circuit). The results of the hydraulic analysis of SPS that has pump 1K 50-32-125 and different pipeline diameters, technical parameters characteristic of self-contained water supply and sanitation systems are presented. Power consumption value E is identified for water pumping. This value is used to assess the energy efficiency of water supply and sewerage systems. Conclusions. The authors have found that the values of the similarity criterion Θ increase together with the pipeline diameter, while efficiency decreases and the energy consumption value improves. Under the conditions under consideration, it is advisable to focus on a change in the value of E rather than efficiency, when energy efficiency is assessed in the process of selecting equipment.
In silico Target Class Prediction and Probabilities for Plant Derived Omega 3 Fatty Acid from Ethyl Acetate Fraction of Moringa oleifera Leaf Extract
Authors: Murugan M. , Krishnaveni K. , Sabitha M. , Kandeepan C. , Senthilkumar N. , Loganathan T. , Grace Lydial Pushpalatha G. Lydial , Pandiarajan G. , Ramya S. , Jayakumararaj R.
Published: June 2022

Plant Derived Omega 3 Fatty Acid – α Linolenic Acid (ALA) a carboxylic acid with 18 carbon atoms, 3 cis double bonds. ALA obtained from plant based food source is converted into eicosa-pentaenoic acid (EPA) and docosa-hexaenoic acid (DHA). However, the rate of conversion is influenced by dose, gender, and health status. Further, intake of ALA significantly reduces the risk of sudden death among myocardial infarction patients consistent with induced antiarrhythmic effect. ALA is concomitant with cardiovascular-protective, anti-cancer, neuro-protective, anti-osteoporotic, anti-inflammatory, and anti-oxidative properties. ALA has anti-metabolic syndrome that regulates gut-micro-floral functionalities. Clinical trials indicate that ALA can be used in the management of multi-metabolic syndrome effects but in-depth target based ADMET studies are required to ascertain its clinical efficacy and market potential.

Keywords: ADMET; Moringa oleifera; Secondary Metabolites; Natural Products (NPs); Bioactive Substances; Octadecatrienoic acid (ODA); Eicosa-Pentaenoic Acid (EPA); Docosa-Hexaenoic Acid (DHA); Plant Derived Omega 3 Fatty Acid (PDO3FA)
Sex Workers and the Best Interests of their Children: Issues Faced by Sex Workers Involved in Custody and Access Legal Proceedings
Authors: DeWolf Julie E.
Published: June 2022

Sex worker parents often lose custody of their children. The purpose of this research was to study theimpact of a parent’s status as a past or present sex worker on judicial decision-making in custody and access disputes. Through doctrinal legal research, I explored judicial treatment of sex workers involved in custody and access disputes in Child Protection and Family Law case law from Ontario. I reviewed every reference to parental involvement in sex work from Child Protection and Family Law decisions from January 2010-March 2020. Parental involvement in sex work was often presented as an unfavourable aspect of the parent, or otherwise had a negative influence on their claim. Sex work was treated as a negative quality in a parent rather than an aspect of their life warranting further factual exploration. I argue that stigma against sex workers appears to carry more weight in custody and access disputes than evidence concerning the impact that a parent’s sex work has on a child.
A Comparative Study to Check the Effectiveness of Task Oriented Activity on Walking Speed in Sub-Acute Stroke Patients
Authors: K Shohe Tokupu , Saikia Baruah Trishna , Paul Mantu , Dutta Abhijit , Kalita Abhijit
Published: June 2022

Stroke which is also known as cerebrovascular accident (CVA) is a leading cause of impairment and disability in the world. There are many factors that affect the functional independence in post stroke people in which gait impairment plays a significant role. The purpose of stroke rehabilitation is to help patients to achieve as high level of functional independence as possible within their particular impairments. It is found that Task oriented activity has been shown to be an effective intervention to improve mobility. However, little is known about the impact of this intervention on the walking speed. The objective of study is to determine the combined effects of task oriented activity with conventional physiotherapy over conventional physiotherapy alone on walking speed in subjects with sub-acute stroke. This was a comparative study where pre and post design were used. Thirty (30) subjects with sub-acute stroke were taken considering the selection criteria; where Experimental group (Group-A) received task oriented activities and conventional physiotherapy and Control group (Group-B) received Conventional physiotherapy with 15 subjects in each group. Six minutes walk test (MWT) was used to assess the walking endurance and Functional ambulation categories (FAC) was used to evaluate the level of dependency of subjects in performing functional activities. Statistical analysis was done by using paired ‘t’ tests which showed significant improvement as the mean value of Group A (experimental group) mean 6MWT increase from -0.517 to -17.582, mean FAC increase from -1.288 to -3.055 but when intergroup analysis was done, its result was significant only in 6MWT were P= 0.046. task oriented activity after stroke could significantly improve walking endurance but not much significant on the level of dependency of the subject in performing functional activities.
Optimización de la PCR en punto final y en tiempo real para la detección de Salmonella enterica serotipo Gallinarum en aves de corral de Costa Rica
Authors: Leza-Leza Makayla Tatiana , Víquez-Ruiz Eunice , Barquero-Calvo Elías , Sancho-Blanco Carolina , Umaña-Castro Rodolfo
Published: June 2022

Introducción: La tifosis aviar y la pulorosis, enfermedades ocasionadas por Salmonella enterica subsp. enterica serotipo Gallinarum biotipo Gallinarum y biotipo Pullorum respectivamente, son responsables de una elevada mortalidad en aves de corral generando grandes pérdidas económicas para los avicultores. Objetivo: Fortalecer la detección de los agentes causales de la tifosis aviar y la pulorosis mediante la optimización de técnicas moleculares, tales como la PCR punto final y la PCR tiempo real (qPCR). Métodos: Se emplearon cepas bacterianas control, aislamientos y tejidos de aves de corral infectadas con Salmonella Gallinarum para estandarizar la detección mediante PCR punto final y qPCR. Resultados: Para la PCR punto final se obtuvo una repetibilidad, especificidad y sensibilidad del 100%, y un valor Kappa de 0.98 para la reproducibilidad. Mientras que, con la qPCR se obtuvo una eficiencia del 103% y valores de repetibilidad y reproducibilidad con coeficientes de variación menores al 6%. El límite de detección de ADN genómico fue de 6.4 pg/μL y el del número de células viables de 3x102 UFC/mL para la PCR punto final y de 10 copias de ADN por reacción para la qPCR. Mediante la secuenciación y análisis de los productos de PCR, la topología de taxonomía molecular posicionó a las cepas de este estudio junto con las del serotipo S. Gallinarum, corroborando su identidad. Conclusión: Se logra optimizar una técnica molecular que permite una detección rápida, confiable y sensible de Salmonella Gallinarum/Pullorum, lo cual puede reducir el tiempo de espera para tomar acción en casos de sospecha clínica y posibles brotes.
Analysis Quality Control of UMKM Tiga Bintang Snack Stick Product Using Statistical Quality Control (SQC)
Authors: Audina Jassinca Chrissma , Fadjryani Fadjryani , Pawellangi Siti Annisa Rahmasari
Published: June 2022

UMKM Tiga Bintang is one of the household-scale agro industries that processes roa fish, duo fish, moringa, and purple sweet potatoes as the basic ingredients into various kinds of snacks in the form of sticks. To get the best quality in accordance with the standards desired by consumers, quality control is needed, which aims to minimize deviations that are not in accordance with the standards set by the industry itself. The purpose of this study is to see whether quality control in the production process by UMKM Tiga Bintang is controlled or uncontrolled. The type of data used in this study is primary data. The analysis process carried out in this study uses the Statistical Quality Control (SQC) approach. Statistical Quality Control is a statistical technique that is widely used to control the quality of a product, by evaluating quality in terms of compliance with specified specifications. The SQC analysis results show that the number of products examined was 24800, where the average product damage was 0.095121 or 9.5121%, with the most type of damage occurring there was a brownish product colour. The upper control limit (UCL) and the lower control limit (LCL) for each production vary. Quality control of UMKM Tiga Bintang is not well controlled because of uncontrolled production time within the upper and lower control limits.
Analysis of poverty factors in Sulawesi by using path analysis
Authors: Fadjryani Fadjryani , Lombang Nur Sakinah
Published: June 2022

Poverty is a human inability to meet the needs of life. Factors that affect poverty can be seen from various indicators. In this study, the path analysis method was used to analyze the factors that directly and indirectly influence poverty in Sulawesi. The results showed that the number of poor people, the labor force participation rate, the human development index, and the average length of schooling had a direct effect on the poverty depth index. Then, the human development index, the average length of schooling, and the poverty depth index have a direct effect on the poverty level. Then, the human development index and the average length of schooling also indirectly affect the poverty level through the poverty depth index.

Keywords: Path Analysis, Poverty Level
Performance and profitability of local banks: The case of the emerging market
Authors: Al Kharusi Sami , Murthy Y Sree Rama , Al Foori Alya
Published: June 2022

This paper investigates the performance and profitability of local banks of Oman for 2017–2020. Financial ratios are employed to measure the financial performance of the local banks listed in the Muscat Securities Market (Sufian, 2009). The study uses cluster analysis procedures for statistical investigation. The cluster results show that cost, profitability, and balance sheet structure (asset-liability structure) are important factors. Big banks behave differently compared to small banks, even though the size was not included as a variable in the cluster analysis. The cluster results did not indicate that COVID-19 has significantly dented the performance of banks in Oman. The financial stability and the soundness of the banking sectors are essential for both investors and depositors, and the main policy implication of this research study is that local banks in Oman are resilient, and a positive outlook is expected, given their ability to survive and manage their business during the global coronavirus outbreak
Application of new rigid sternal plates and prediction of sternal dehiscence in high-risk patients
Authors: Wang Jing , Hao Shuang , Zhang Jing-Chao , Pei Yu
Published: June 2022

Background: Sternal dehiscence is a serious complication of
cardiac surgery that has been a clinically intractable problem. The
study aimed to explore the advantages of new rigid sternal plates (NRSP)
compared with wire cerclage (WC) in the cardiac surgery of high- risk
patients with sternal dehiscence and summarize the application
experience. Methods: A retrospective analysis was performed on
high-risk patients for sternal dehiscence who underwent cardiac surgery
operation in the Department of Cardiovascular Surgery, The First
Affiliated Hospital of Zhengzhou University from January 2017 to
December 2021. All cases were identified and divided into WC (n=276) and
NRSP (n=291). Risk factors for sternal complications, postoperative
outcomes and cost associated with surgery and subsequent treatment were
analyzed. Results: There was no significant difference in
demographics and preoperative comorbidities compared to patients with
WC(p＞0.05), those with NRSP had longer sternal closure time(p＜0.001).
However, there are shorter hospital length of stay(p＜0.001), less
postoperative drainage volume of 24h (p＜0.001), and lower total costs
at 6 months(p=0.043) and 12 months(p＜0.001) in NRSP patients. After
multivariate logistic regression analysis, the remaining five
independent risk factors for the development of sternal dehiscence were
used to compose the nomogram. The area under the receiver operating
characteristic curve (AUC) of the model was 0.865 (95% confidence
interval [CI], 0.802–0.927), and the calibration curve was good by
the Hosmer–Lemeshow test. Conclusions: NRSP can enhance the
stability of sternal fixation in high-risk patients after cardiac
surgery and reduce the risk of sternal complications. Moreover, the
nomogram comprised of age, body mass index (BMI)＞30kg/m
, diabetes mellitus(DM), chronic obstructive
pulmonary disease (COPD) and sternal closure method may predict the risk
of sternal dehiscence.
Coumarin-derived imino sulfonate 5h ameliorates cardiac injury induced by myocardial infarction via activating Sirt1/Nrf2 signaling pathway
Authors: Xu Xueli , Shi Yangyang , Yu Qingwen , Peng Yajie , Zhao Fei , Cui Jing , Chen Yajing , Liu Lingxu , Zhang Yiran , Zhang Ji , Wei Bo
Published: June 2022

Background and Purpose: Myocardial infarction (MI) is an irreversible
damage caused by ischemia and hypoxia in coronary arteries accompanied
with elevated levels of catecholamine, leading to the accumulation of
free radicals. Our previous study discovered coumarin-derived imino
sulfonates as a novel class of potential cardioprotective agents
possessing strong anti-oxidative effect in cardimyocytes. Therefore, the
identification of the compound with the highest cardioprotective
activity, 5h, and the mechanism involved was necessary. Experimental
Approach: As a kind of catecholamine, isoproterenol induces MI injury
mimicking symptoms of MI patients in clinic. Cardiac function, nfarct
area, histopathological changes were evaluated. The potential mechanism
underlying such action of compound 5h was explored via transfection with
adenovirus to downregulate Sirt1 in vitro, and by administration of
Ex527, the specific inhibitor for Sirt1, in vivo. Key Results: Compound
5h exhibited strong cardioprotective actions in vivo and in vitro via
improving cell survival, cardiac function and decreasing the cellular
oxidative stress and cardiac infarct size against MI. Furthermore,
compound 5h significantly enhanced cardiac expression of Sirt1,
subsequently activating the Nrf2/NQO1 signaling pathway. However,
adenovirus induced Sirt1 downregulation or Sirt1 specific inhibitor
largely blocked such beneficial effects of 5h in vitro and in vivo,
respectively. Conclusions and Implications: Our results demonstrated,
for the first time, that the cardioprotective action of 5h against MI
was mediated by reducing oxidative stress and apoptosis through the
Sirt1/Nrf2 signaling pathway. Our findings proposed novel insights in
the development and evaluation of coumarin-derived imino sulfonate
compounds as epigenetics-targeted drug therapy for MI.
A case report of two OSA patients with cervical spine abnormality and relevant literature review
Authors: Sun Anrong , LUO HUIPING , Fang Rui
Published: June 2022

This article reported two cases of adult patients diagnosed as severe
obstructive sleep apnea (OSA) in the Therapy Center of Sleep-disordered
Breathing of the Eye, Ear Nose & Throat (ENT) Hospital of Fudan
University. Both patients were found with invisible cervical spine
structural abnormality. The unknown correlation between the development.
His-Optimized Cardiac Resynchronization Therapy (HOT-CRT) in a subcutaneous ICD patient: first-in-human case report
Authors: Dell’Aquila Andrea , Bontempi Luca , Fundaliotis Angelica , Moretti Marina , Pitì Antonino , Curnis Antonio
Published: June 2022

Recent developments in arrhythmology have enabled the use of new
devices, such as subcutaneous implantable cardioverter-defibrillators
(s-ICD), and the comeback of older strategies, such as His-Bundle pacing
(HBP) in clinical practice, alongside the use of thoroughly proven
therapies such as cardiac resynchronization therapy (CRT), e.g. with
His-Optimized CRT (HOT-CRT). However, interplay between these new and
older techniques is not always clear. We report the first-in-human case
of biventricular pacemaker (CRT-P) implantation with HOT-CRT in an s-ICD
patient. Paced QRS morphology was similar to the spontaneous morphology,
albeit shorter. Correct QRS identification by the s-ICD was confirmed
both intra-procedurally and post-procedurally.
Geography and prevalence of rickettsial infections in Northern Tamil Nadu, India: A cross-sectional study
Authors: Prakash John Antony Jude , D’Cruz Solomon , Karunasree Susmitha , Yuvaraj Jayaraman
Published: June 2022

Rickettsial infections and Q fever are a common cause of acute febrile
illness globally. Data on the role of climate and altitude on the
prevalence of these infections in lacking from Southern India. In this
study, we determined the sero-prevalence of scrub typhus (ST), spotted
fever (SF), murine typhus (MT) and Q Fever (QF) in 8 eight geographical
regions of North Tamil Nadu by detecting IgG antbodies using ELISA.
Totally we tested 2565 people from 86 localities. Among the 27.3 %
positives, approximately 5% were IgG positive for two or more
infections. Seroprevalence to rickettsioses and Q fever was highest for
individuals from rural areas and increased with age (>30
years). Those in the Nilgiris highlands (wetter and cooler) and Erode,
which has the most land under irrigation, demonstrated the least
exposure to rickettsioses and Q fever. Lowland plains (AOR: 8.4-22.9;
95% CI: 3.1-55.3) and highland areas upto 1000 metres (AOR: 6.1-10.3;
95% CI: 2.4-23.9) showed the highest risk of exposure to scrub typhus.
For spotted fever, the risk of exposure was highest in Jawadhi
(AOR:10.8; 95% CI: 2.6-44.3) and Kalrayan (AOR:16.6; 95% CI:
4.1–66.2). Q fever positivity was most likely to be encountered in
Salem (AOR: 5.60; 95% CI: 1.01 – 31.08) and Kalrayan hills (AOR:12.3;
95% CI:2.9 – 51.6). Murine typhus risk was significant only in
Thiruvannamalai (AOR:24.2; 95% CI: 3.3 – 178.6). Based on the data
generated it seems that rickettsial infections and Q fever prevalence is
low in areas which receive rainfall of ≥150 cm/yr, with average minimum
and maximum temperatures between 15-25 C and
elevation in excess of 2000 metres. It is also low in low land and
irrigated lands with dry climate. These preliminary findings need to be
validated by conducting active surveillance in these areas.
Thermoelastic effect in porous media: dispersion and attenuation analysis
Authors: Noé Izabela Bastos , Azeredo Marcia Miranda , Priimenko Viatcheslav Ivanovich
Published: June 2022

Abstract. The theory of thermoelasticity for saturated porous media correlates the heat equation with the poroelastic equations through the coupling between the fields of mechanics deformations and temperature. This theory is widely used in the analysis of high pressure and high temperature reservoirs and other areas of knowledge. We analyze the dispersion and attenuation of the thermoelastic waves depending on the time frequency, thermic, and petrophysical parameters of a medium. Three different poroelastic models coupled with the hyperbolic heat equation are considered: the Biot models, with and without viscous dissipation, and the Biot-JKD model, which involves the dynamic permeability of the rock.Keywords: thermoelastic coupling; hyperbolic heat equation; Biot/Biot-JKD equations; thermic and petrophysical parameters; dispersion and attenuation effect Efeito termoelástico em meios porosos: Análise de dispersão e atenuaçãoResumo. A teoria da termoelasticidade para meios porosos saturados correlaciona a equação do calor com as equações poroelásticas através do acoplamento entre os campos de deformações mecânicas e temperatura. Esta teoria é amplamente utilizada na análise de reservatórios de alta pressão e alta temperatura e em outras áreas do conhecimento. Analisamos a dispersão e atenuação das ondas termoelásticas em função da frequência temporal, parâmetros térmicos e petrofísicos de um meio. São considerados três diferentes modelos poroelásticos acoplados à equação do calor hiperbólico: os modelos Biot, com e sem dissipação viscosa, e o modelo Biot-JKD, que envolve a permeabilidade dinâmica da rocha.Palavras-chave: acoplamento termoelástico; equação de calor hiperbólico; equações Biot/Biot-JKD; parâmetros térmicos e petrofísicos; efeito de dispersão e atenuação.
Modeling of convection-dominated melting in rectangular enclosures
Authors: Ibrahim Seoudi , Kamal Mahmoud , Abotaleb Hamdy
Published: June 2022

A validated CFD by ANSYS model is built for a melting process of PCM (gallium), inside rectangular enclosure heated from one side and cooled from another. This was carried out by enabling the solidification and melting model in addition energy model of ANSYS. Regression model of melting front results from CFD model by ANSYS is utilized and integrated inside numerical approach by MATLAB to generate constants for Nusselt correlations and effective conductivity during different melting stages that can be used to define melting front locations and temperature at grid different locations. In addition, effect of the wall temperature and model aspect ratio variation on melting process have been simulated by ANSYS and analyzed in details. Enthalpy method and conduction equations for 2-D model were used to describe the predicted share of convection in melting process, with trial and error by assuming the constants automatically. Accordingly, melting process can be predicted in a simple and a conservative time way at the same time, the results are mainly indicating that convection heat transfer affects the melting process and melting behavior which is in coherence with previous experimental and analytical literature. Also, the effect of aspect ratio were investigated to assure that the more the aspect ratio, the better is the temperature homogeneity.
The impinging wall effect on flame dynamics and heat transfer in non-premixed jet flames
Authors: Sun Meng , Jiang Jieyu , Yu Yongzhe , He Canxing , Liu Kun , Zhang Bin
Published: June 2022

The impinging jet flame is studied experimentally and numerically accounting for the complex flame-wall interactions in practical combustion devices. Flame dynamics and heat transfer with the effect of impinging wall are analyzed. The 3-D large eddy simulation coupled with detailed chemical reaction mechanism and particle image velocimetry experiment based on cross-correlation measurement principle are performed for verification and further analysis. Results show that vortices are generated due to the Kelvin-Helmholtz instability originated from velocity gradient. The 3-D vortex interactions involving vortex rings and spirals are also indicated by vorticity and the convection of streamwise vorticity is responsible for the effect of vortex spirals associated with turbulent flow transition. In addition, results calculated from four wall thermal conditions are compared and analyzed. Dirichlet condition is inferred to be more suitable for the case of wall materials with higher thermal conductivity. It is indicated that wall thermal condition mainly affects the heat transfer in the near-wall region, but has little effect on the momentum transfer. This study provides references for the adoption of wall conditions in numerical simulation and near-wall treatment in combustion systems.
Regression and Machine Learning Methods to Predict Discrete Outcomes in Accounting Research
Authors: Krupa Jake , Minutti-Meza Miguel
Published: June 2022

Predictive modeling focuses on iteratively trying various combinations and transformations of a set of variables to generate a decision rule that predicts outcomes for new observations. Although accounting researchers have demonstrated interest in predictive modeling, we identify a lack of accessible and applied guidance on this topic for accounting settings. This issue has become more salient with the increasing availability of machine learning models that use unfamiliar terminology, are estimated using algorithms, and produce different outputs than other models used for causal inference. To overcome this gap, we provide an overview of how to predict discrete outcomes with logistic regression and machine learning models used in recent studies. We also include guidance and a comprehensive example—predicting investigations by the U.S. Securities and Exchange Commission—that illustrates the elements of the prediction process, highlighting the importance of out-of-sample accuracy and unique aspects in the presentation of a prediction model's results.

Data Availability: The data and code to replicate our example are available upon request. First, those interested must request and receive the SEC investigation data from Blackburne et al. (2021). Next, we will provide code to merge the SEC investigation data with Compustat and CRSP and replicate our analyses.

JEL Classifications: C10; C25; C45; C53; M48.
Implementation of a Prediabetes Risk Test for an Underserved Population in a Federally Qualified Health Center
Authors: Kim Misun , Kreider Kathryn Evans , Padilla Blanca I. , Lambes Katherine
Published: June 2022

  

Consistent screening for prediabetes is imperative to ensure early detection and timely intervention to prevent progression to diabetes. Adopting a standardized approach such as a screening tool can streamline the screening process. This articles describes a quality improvement project conducted at a federally qualified health center to assess whether implementation of the Prediabetes Risk Test improved early detection of prediabetes in an underserved population. Use of the risk test was found to improve detection of prediabetes in this populatio
Usnea in West Java: a potential source of bioactive secondary metabolites
Authors: Jannah Miftahul , A`yun Qurrota , Afifah Nida , Prasetya Eko , Hariri Muhammad Rifqi
Published: June 2022

Lichen is a symbiotic organism consisting of algae (photobionts) and fungi (mycobiont). In Indonesia, Usnea is the only genus of lichen that has been widely recognized and used by the local community for traditional medicine. It is locally known as kayu angin, rusuk angin, or janggot Kai. Furthermore, it produces lichen acid and other compounds as secondary metabolites that need investigation. Therefore, this study aimed to identify species and determine the secondary metabolites of Usnea in West Java. There were 13 species of Usnea identified, with U. rubrotincta, U. mutabilis, and U. barbata being new to West Java. The extraction of U. esperantiana has the highest number of lichen acids, with 20 different types identified. This study showed that Usnea contains lichen acid, flavonoid, and saponin compounds. The secondary metabolites are a potential source of natural products for bioprospecting.
Understanding and Development of Pseudo Glass Film for Grain Oriented Electrical Steel
Authors:   , Hill Ashley S.
Published: June 2022

The mechanisms and the development of the surface oxide known as “Forsterite” during the high-temperature annealing process of electrical steel is not fully understood. Research has demonstrated that a uniform Forsterite layer develops at 1200oC and adding certain compounds to the magnesium slurry improves consistency. This thesis investigates the development of Forsterite during the high-temperature coil annealing cycle and the effect of introducing selected compounds to the magnesium slurry on the Forsterite layer. Based on a literature review on the transition of Fayalite to Forsterite and the influence of high-temperature soak, an experiment was conducted on laboratory coated samples that were then heat-treated using a custom laboratory furnace. The heat treatment that was conducted was interrupted at various points during the heating phase and the high-temperature soak phase. An additional investigation into the effects of TiO2, V2O3 and FeO-Fe2O3 when added to the magnesium slurry has on Forsterite was also studied. The results indicate that magnesium-enriched surface is developed as early as 1050oC, and with the introduction of TiO2 to the magnesium slurry a Ti enriched region also develops at 1050oC as part of the surface oxide. Further research is needed to identify the compounds of the magnesium and titanium enriched regions.
Post COVID-19 Multisystemic Inflammatory Syndrome Revealed by Seizures: A Case Report
Authors: Mebrouk Nadia , Lachkar Yasmine , Bentalha Aziza , Chat Latifa , Kriouile Yamna , Alaoui Asmaa Mdaghri
Published: June 2022

The Covid-19 infection disrupts various organs, including the liver, kidney, and nervous system. Common neurological symptoms of the Covid-19 infection include delirium, confusion, headache, and loss of sense of smell and taste. In rare cases it can cause seizure. The virus enters the nervous system either directly through nerve pathways or indirectly through the ACE2 receptor. Understanding the potential mechanisms is necessary to gain better insight into COVID-19 induced seizure pathogenesis and to design the correct treatment strategies to achieve appropriate treatment for seizure and epilepsy.
We report the case of a child with post covid syndrome with multisystemic inflammatory syndrome damage, and we explain the mechanisms of the damage to the nervous system.
Congenital and Placenta Malaria and Newborn Birth Weight in Asymptomatic HIV Positive Pregnant Women at Term
Authors: Kuku-Kuye Taiwo O. , Orekoya Oluwaseun O. , Fabamwo Adetokunbo O. , Akinola Oluwarotimi I. , Olumodeji Ayokunle M.
Published: June 2022

Background: Human Immuno-deficiency Virus (HIV) and Malaria infection independently are major contributors to adverse perinatal outcomes in sub-Saharan Africa. A co-infection of both in pregnancy has been associated with more deleterious birth weight- related neonatal outcomes. We assessed for congenital malaria and evaluated the birth weights of babies born to HIV positive mothers with and without evidence of placenta malaria at term delivery. Methods: This was a comparative cross-sectional study in which 90 low-risk, HIV positive pregnant women on highly active retroviral therapy (HAART), asymptomatic for malaria, with uncomplicated delivery, at the Lagos State University Teaching Hospital, were consecutively recruited to have their maternal venous, placenta and newborn blood samples assessed following delivery for malaria. A placenta biopsy was also done to assess for features of placenta malaria. Data obtained were expressed in frequencies and percentages and variables were tested as appropriate using an independent t-test, chi-square and spearman’s correlation. The level of significance was set at p<0.05. Findings: The prevalence of placenta malaria and congenital malaria in the study was 11.1% and 0.0% respectively. Only 3.3% of the asymptomatic HIV positive, pregnant women at delivery had positive malaria tests of their venous blood samples. The mean neonatal packed cell volume at birth for women with and without placenta malaria was 43.6% and 44.9% respectively (p=0.044). The mean birth weight of the babies born to HIV positive women with and without placenta malaria was 2.7±0.2kg and 3.0±0.4kg respectively (p=0.008). The correlation between birth weight and CD4 count was positive but insignificant (r=0.069, p=0.515). Conclusion: Although, irrespective of placenta malaria status, congenital malaria is a rarity in babies of HIV positive pregnant women, the birth weight and packed cell volume of babies born to HIV positive women is significantly lower in this group of women with features of placenta malaria than in women without placenta malaria.
Peningkatan Kemampuan Pemahaman Matematis Dan Penalaran Matematis Melalui Problem Based Learning (PBL) Siswa Sekolah Menengah Pertama
Authors: . Topik
Published: June 2022

The research aims to studyof improvement mathematical understanding and mathemacal reasoning. The design researchis control group non-equivalen pretest and posttest. The population of all private secondaryschool in west bandung. The selection of a cluster sampling (area sampling) i.e. eighth classprivate secondary boarding school Darun Nasya. The instrument used are mathematicalunderstanding, mathemacal reasoning and observation sheets. The analysis of quantitativedatum using two way anova test. Research results : (1) there was no difference inimprovement of the ability of mathematical understanding; (2) there is a deffernce inmathematical reasoning ability improvement; (3) there is a defference in mathematicalreasoning ability improvement KAM among group with KAM hight group, the other groupthere is no defference; (4) there is no intreraction between the learning model and KAM toimprovement ability mathematical understanding, mathemacal reasoning
Implementasi Pengembangan Bahan Ajar Berbasis Howard Gardner’s Multiple Intelligences Untuk Meningkatkan Kemampuan Koneksi Dan Kemandirian Belajar Siswa
Authors: Sulastri Fitri
Published: June 2022

Penelitan ini bertujuan untuk mengetahui peningkatan kemampaun koneksi dan kemandirian belajar siswa yang pembelajarannya menggunakan  Modul Program Linear Berbasis Howard Gardner’s Multiple Intelligences. Penelitian ini adalah penelitian mix method dengan tindakan penelitian adalah penelitian tindakan kelas yang dilaksanakan di kelas XI MIPA 2 sebagai kelas modul MI dan XI MIPA 3 sebagai siswa kelas konvensional. Instrumen yang digunakan adalah tes kemampuan koneksi dan skala kemandirian belajar siswa. Uji statistik yang dilakukan adalah Independent Sample t-test, Uji Mann Whitney, dan Uji Korelasi Berganda. Hasil penelitian yang diperoleh adalah: (1) Modul Program Linear Berbasis MI dapat meningkatkan kemampuan koneksi matematis siswa;  (2) Peningkatan kemampuan koneksi matematis siswa yang  pembelajarannya menggunakan modul MI lebih  baik dari pada siswa dengan pembelajaran konvensional; (3) tidak terdapat peningkatan kemandirian belajar siswa yang pembelajarannya menggunakan modul MI; (4) tidak terdapat korelasi antara kemampuan koneksi dan kemandirian belajar siswa.
Clinical Reasoning Learning Sessions in COVID 19 Pandemic
Authors: Wakrim Soukaina , Chakiri Radia , Wakrim Asmaa
Published: June 2022

Clinical reasoning teaching is an approach educational method based on learning and contextualized and synthesis education. The aim of this study was to determine the value of clinical reasoning teaching sessions, from the perspective of third year medical students using a self-administered questionnaire. One group of ten students participated in this study. They had clinical case sessions during three weeks. An anonymous evaluation self-administered questionnaire was submitted to the students at the end of the period. The average scores given by students for the items “quality of education”, “atmosphere”, “interest in teaching sessions” and “acquisition of new clinical knowledge” were greater than 7/10. All students opted for clinical reasoning teaching as the preferred teaching method for optimal memorization and have found a real contribution of reasoning teaching in the management of relationship with the patient. Clinical reasoning teaching session appears to be widely desired by medical students.
Doctoral Studies in the Context of the Bologna Process: Industrial Doctorates in Greece
Authors: Vasilopoulos Andreas , Giotakou Angeliki
Published: June 2022

There is a major shift, recently, in the structure, content and even the very focus of doctoral studies in Europe - both for universities and students themselves. In the context of the Bologna Process, at the Berlin meeting in 2003, ministers responsible for higher education in the Member States agreed to place doctoral studies at the service of the effort to achieve the EU's research objectives, acting as a link between the European Higher Education Area (EHEA) and the European Research Area (ERA), with the aim to serving the overarching economic purpose. Accordingly, in this paper, we will attempt, first of all, to highlight recent changes in doctoral studies in Europe and describe the corresponding developments in Greek legislation. Finally, we will focus on a very recent trend concerning doctoral studies in Greece: industrial doctorates
Students’ Perceptions of Outcome-Based Learning Activities: A Case Study of University of Social Sciences and Humanities, Vietnam National University Ho Chi Minh City
Authors: Thuy Cao T. C.
Published: June 2022

This case study has two aims: to analyze the internal structure of outcome-based learning activities in the University of Social Sciences and Humanities, Vietnam National University Ho Chi Minh City and to understand the implementation of these outcome-based learning activities. An exploratory factor analysis of data from 400 undergraduate students in Year 3 and 4 revealed a four-factor structure with the selected 19 items. 70,648 percent of the total variance was explained by these four factors. The results also show that students have positive attitudes towards all the outcome-based learning activities, especially how information about the learning outcomes was communicated to them and the activities designed to develop transversal skills.