bluuebunny/crossref_metadata_2025 huggingface dataset:
AAO Mould for Fabricating Anti-Reflective Polymer Nanopillar Array on Large Area
Authors: Sharma Anagdha , Aravindan Sivanandam , Venkateswara Rao Paruchuri
Published: September 2022

Anti-reflective polystyrene nanopillar arrays were fabricated by the process of hot embossing where it utilizes the nickel coated anodised aluminium oxide template. Electroless plating being a catalytic method of plating uniformly coats the membrane which increases its strength. The supporting layer of nickel makes AAO template suitable to be used as a mould multiple times. Highly conformal nanopillars of average diameter 400nm and length 30 μm to 50μm were fabricated on the area of ⁓5cm2. Hot embossing process ensures repeatability with precision and high throughput. The enhanced light entrapping is attributed to the multiple internal reflection in the nanopillars of high aspect ratio.
Low Temperature Synthesis of Fluorescent Carbon Dots from Pomegranate Peels
Authors: Anagbonu Prince , Allam Ahmed , Ghali Mohsen
Published: September 2022

In recent times, much attention has been drawn to the synthesis of carbon dots from agro waste since they are a cheap source, readily available, non-toxic and in most instances disposed of as waste. Yet, the synthesis of fluorescent carbon dots at low temperatures from agro waste remain a challenge. Herein, we report for the first time on a sucessful synthesis of flourescent carbon dots, with average size 4.7 nm, at low temperature of only 100 °C using hydrothermal method from pomegranate peels as a sole precursor. The crystal structure and the morphological features of the synthesized dots were characterized by XRD, UV-vis absorption spectroscopy, photoluminescence (PL), nanosecond fluorescence lifetime, FTIR and Zeta potential measurments. The synthesized dots showed bluish emission at 440 nm, when excited at a wavelength of 360 nm, with relatively long decay lifetime of 7.4 ns.
Defect Characterization in Gel Phantom Using Ac Impedance Spectroscopy
Authors: Jusi Arvin Lester C. , Tapia Alvin Karlo Garcia , Reyes John Lorenzo , Lebosada Ravtor A. , Belizario Viktor Joshua L. , Ramoso John Paolo A.
Published: September 2022

Gel phantoms are useful materials for medical diagnostics and impact testing. The gel phantoms can be tailored to suit various tissues from the bulk, microscopic and molecular components. These components have responses under an AC electric field. In this work, a gel phantom was prepared using a commercially-available gel powder. Cylindrical samples with varying degrees of defects were cut from the prepared gel phantom and tested using an AC impedance analyzer. The defects were created by piercing a needle along the center plane of the sample and the degree of defects was varied by increasing the number of piercings in the sample. The conductivity of the sample at lower frequencies was influenced by the mechanism involved in water leakage due to piercing while the conductivity at higher frequencies was dominantly affected by space charge relaxation and structural conductivity barriers. The Nyquist plots obtained were seen to exhibit modified Randles-type behavior. Equivalent circuit fittings showed the parameters to be distinct with varying degrees of defects.
Experimental Study of Cement Mortar on Compressive Strength and Wave Velocity Characteristics for Different Sand/Cement Ratio and Particle Sizes
Authors: Lu Liang Liang , Zhang Rui , Zhang Yi Bin
Published: September 2022

Cement mortar is the most commonly used cement-based material, which widely used in construction materials, filling materials and other fields. The aim of this paper is to study the compressive strength and wave velocity characteristic in different particle sizes and sand/cement ratio. The uniaxial compressive strength test and wave velocity test were carried out in different particle size and sand content of mortar samples, respectively. It was found that the compressive strength and wave velocity decrease with the increase of sand/cement ratio. It is interesting that compressive strength and wave velocity in all specimens gradually increases with the increase of particles sizes. The compressive strength of cement mortar is related to the wave velocity. In detailed, the compressive strength and wave velocity was fit to linear relationship. It could thus be used to predict the compressive strength of cement mortar by wave velocity.
Mechanical Properties of Ultra-Lightweight Geopolymer Composite after Elevated Temperature Exposure
Authors: Huang Huan Sheng , Wu Xiu Long , Zheng Xiu Mei , Lu Hai Sheng , Li Jun Hao , Liao Zuo Cong
Published: September 2022

This paper investigates the mechanical properties of a new type of ultra-lightweight geopolymer composite (ULGC) exposed to elevated temperatures up to 700 °C. This ULGC materials, using ground granulated blast furnace slag, fly ash, and silica fume as the precursor as well as fly ash cenosphere as lightweight aggregates, has a density of less than 1400 kg/m3 and compressive strength up to 40 MPa and thus it has high structural efficiency compared to other types of concrete materials. The effect of polyvinyl alcohol (PVA) fiber dosage and PVA fiber length on the compressive strength, bending strength as well as mass loss of ULGCs after elevated temperature exposure were evaluated, combining a two-factor analysis of variance. The results indicated that when the temperature was below 300 °C, the PVA fiber could improve the mechanical properties of ULGC. However, when the temperature was higher than 300 °C, due to the melting of fibers, the positive effect of fiber dosage on bending strength significantly reduced, and fiber dosage exhibited a negative effect on compressive strength. The ULGCs containing 6mm and 18mm fibers showed better bending strength, while the effect of fiber length on compressive strength of ULGC was negligible.
Effect of Ferronickel Slag as Cementitious Material on Strength of Mortar
Authors: Edwin Romy Suryaningrat , Kimsan Masykur , Tamburaka Irmawatty Paula , Pramono Bambang , Azis Asminar , van den Heede Philip , de Belie Nele , Gruyaert Elke
Published: September 2022

In this work, the performance of mortar made with ferronickel slag (FNS) as cement replacement was investigated. The granulated FNS was ground to obtain a fineness higher than cement. To assess the performance of FNS in fresh and hardened mortar, the workability, flexural, and compressive strength were experimentally assessed. Based on the results obtained, the fluidity of mortar increased with increasing FNS content. It was found that FNS did not promote the compressive strength of mortar in the early days of curing, but at longer curing times the FNS starts to react. Although there is a decrease in flexural strength of mortar containing FNS, this result tends to be better than the compressive strength performance. The presence of FNS in mortar increased the porosity.
Preparation of Crosslinked Alginate-Cellulose Derivative Microparticles for Protein Delivery
Authors: Guerrero Rodel , Heng Paul W.S. , Tumolva Terence P.
Published: September 2022

Microparticle protein delivery system using alginate and cellulose derivative (HPC, HEC and CMC) composite system was prepared using external gelation with vibration technology. Bovine serum albumin (BSA) as a model protein was encapsulated using these biodegradable materials. This preparation showed an increase in encapsulation efficiency in comparison to the samples where pure alginate was used as the encapsulating material. Compared with the other microparticles, the 50:50 alginate/HEC samples exhibited significant encapsulation efficiency. Consequently, its release rate in the acidic medium was comparatively substantial and higher cumulative release in the simulated intestinal fluid (SIF) medium at the end of the dissolution study was observed to be high at around 86.17%.
Structural Analysis and Dielectric Properties of Oxygen Non-Stoichiometry 5% Fe-Doped BaTiO3 Ceramic
Authors: Ku Muhsen Ku Noor Dhaniah , Osman Rozana Aina Maulat , Idris Mohd Sobri , Muhammad Nadzri Nur Izzati , Ruiz León Domingo Arturo
Published: September 2022

The 5 mol% Fe-doped BaTiO3 ceramic has been synthesized by using solid-state method. The sample was characterized by X-ray diffraction (XRD) and Impedance spectroscopy. It is interesting to note that the sample can developed a phase transformation between 1000 °C to 1350 °C. The XRD results showed that sample exhibited cubic structure when heated at 1000 °C and developed oxygen non-stoichiometry when it was heated at 1350 °C for 8 hours. It was confirmed by the ceramic color changes. The dielectric properties of the sample is relatively low which is due to the oxygen non-stoichiometry effect and gives the dielectric constant, εr value around 150 at 30 °C with frequency 1 kHz. The capacitance value of this sample lies within 10-8 to 10-10 which represents that the electrical properties of the sample has shown bulk and grain boundary response. There are pores that can be observed from the SEM images indicates the porosity of the sample which is in a good agreement with the low dielectric constant value. Moreover, the grains are composed of rectangular orientations, hexagonal shapes and inhomogeneous microstructures that might represent the coexistence of tetragonal and hexagonal phase of the sample.
Solvothermal Prepared Slag Nanocomposite as a Catalyst for Organic Dye Photodegradation
Authors: Safo Kingsley , Noby Hussien , Matatoshi Mitsuhara , Naragino Hiroshi , El-Shazly Ahmed H.
Published: September 2022

Steel slag nanocomposite was synthesized in this study using a solvothermal preparation technique from raw electric arc furnace (EAF) slag. XRF, SEM, FTIR, and UV–Vis spectroscopy techniques were used to characterize the prepared nanocomposite. The XRF result shows a high amount of SiO2 and Fe2O3 constituent in the slag with a small weight percentage of TiO2. The prepared slag nanocomposite was utilized for methylene blue (MB) dye degradation. The Photodegradation result from the study indicated an optimum degradation efficiency of 77.07 % at a 40 min irradiation time. The effect of pH variation and catalyst dosage on photodegradation was studied. The results reveal that photodegradation of the dye occurs best in an alkaline solution and that increasing the catalyst dosage above the reaction threshold reduces the degradation efficiency.
Reconnaissance surficial geology, Bloody River, Northwest Territories-Nunavut, NTS 96-P
Authors: Kerr D E
Published: September 2022

Preliminary surficial geology, based on airphoto interpretation and limited legacy field data of Bloody River map area, records a dynamic Late Wisconsin glacial landscape. Streamlined till and bedrock landforms, relating to Laurentide ice originating east of the
map region, indicate regional westward flow diverged northwestward and southwestward at the eastern end of two topographic highs. Ice then converged between and south of these two highs, then diverged at the western end of these highlands. During deglaciation, ice stagnated in northwestern and
central highland regions, forming extensive hummocky moraine, large kames, recessional moraines, and kame moraines. In other parts of the map area, hummocky till, small moraines, and undifferentiated till ridges, were deposited over fluted till. Outwash plains, eskers, and meltwater corridors record
northwestward to southwestward meltwater flow. Glaciolacustrine sediments associated with glacial Lake McConnell occur in the southeast, up to 280 m elevation. Other unrelated, isolated glaciolacustrine deltas indicate small ice-marginal lakes between 400 and 460 m
elevation.
Unusual clinical presentations of scrub typhus, a neglected tropical disease
Authors: Verma Shiva , Shukla Suruchi , Himanshu D , Sawlani KK , Prakash Shantanu , Jain Amita
Published: September 2022

Background & objectives: Scrub typhus is a neglected tropical disease common in Asia and Africa. It usually presents with non-specific symptoms like fever, rashes, and lymphadenopathy. It has a varying range of clinical picture that often leads to misdiagnosis and initiation of non-specific treatment. This disease is thus associated with high morbidity and mortality. We aim to highlight the uncommon presentations of this common disease to create awareness regarding the unusual presentations of scrub typhus.

Methods: This prospective study was performed over a period of two months enrolling eleven adult patients with serological evidence of anti-scrub typhus IgM antibodies.

Results: All enrolled 11 cases [5 males (45.5%) and 6 females (54.5%)] were positive for anti-ST IgM antibodies and negative for other tested microbial agents. 7/11 (63.6%) patients were admitted with a clinical diagnosis of acute encephalitis syndrome (AES as per standard WHO definition), 3/11 (27.3%) patients presented with jaundice and 1/11 (9.1%) patients presented with rashes. Two out of 7 (28.6%) AES cases had developed peripheral gangrene of extremities.

Interpretation & conclusion: Scrub typhus is a common tropical disease that can have various unusual clinical presentations like meningoencephalitis, vasculitis, acute kidney injury, jaundice, MODS. It closely mimics other infective etiologies making its diagnosis difficult. A high index of suspicion and clinical awareness is required in clinical practice to identify the different presentations of this disease so that early treatment can be initiated to reduce morbidity and mortality associated with this disease.
Perceived Stress, Anxiety, Stigma, and Coping Strategies during the COVID-19 Pandemic
Authors: Tilak Shruti V. , Kadam Kranti S.
Published: September 2022

Context:

Health-care workers (HCWs) are facing stigma during the COVID-19 pandemic. Stigma is associated with poor mental health.

Aims:

This study aimed to assess the prevalence and psychological impact of COVID-19-related stigma and different coping mechanisms among physicians in Mumbai.

Settings and Design:

An online cross-sectional survey was conducted.

Subjects and Methods:

One hundred and seventy physicians from Mumbai were administered questionnaires on perceived stress, anxiety, COVID-19-related stigma, and coping strategies.

Statistical Analysis Used:

Data were analyzed using descriptive statistics, correlation tests, and binary logistic regression in the SPSS, version 20.0.

Results:

The prevalence of stress and anxiety was 57.6% and 20.0%, respectively. 34.7% of physicians felt stigmatized due to COVID-19. Stress was significantly associated with COVID-19-related stigma (P = 0.009), and emotion-oriented coping (P = 0.000), as was anxiety (P = 0.000, P = 0.000, respectively).

Conclusions:

COVID-19-related stigma is a major issue among physicians. Stigma and emotion-oriented coping mechanisms are predictive of mental distress in this population.
Scientometric Analysis of the World Scientific Production on Tuberculosis Associated with COVID-19
Authors: Nieto-Chumbipuma Jorge , Silva-Reategui Luis , Fernandez-Giusti Alicia , Barja-Ore John , Retamozo-Siancas Yesenia , Mayta-Tovalino Frank
Published: September 2022

Background:

Nowadays, tuberculosis and COVID-19 are the principal infections around the world. This study aimed to determine the global scientific production on COVID-19 associated to tuberculosis during the period 2019–2020.

Methods:

For the collection of metadata on COVID-19 associated to tuberculosis, the Scopus database was used, considering the period 2019–2020, with the last day of update being September 13, 2021. The main authors, countries, institutions, journal metrics, and documents were extracted. The Scival tool was used for the scientometric analysis of the data.

Results:

A total of 464 papers were retrieved where it was found that universities in South Africa, the United States, and England led the world's scientific production. The International Journal of Tuberculosis and Lung Disease was the journal with the highest production and The Lancet Global Health was the journal with the most citations per publication. On the other hand, most papers were published in Q1 journals, with infectious diseases within the area of medicine being the most addressed.

Conclusion:

South African universities lead the world in scientific output. Most of the research on this topic has been published in Q1 journals, with collaboration being largely national. Further analysis is needed in the aftermath of the pandemic.
Measurement of malignant spiculated mass lesions on mammogram: Do we include the length of the spicules?
Authors: Bhatia Mohit , Ahmed Rizwan , Nagarajakumar Anupama , Alani Azhar , Doddi Sudeendra , Metafa Anna
Published: September 2022

Aim:

The aim of this study is to determine if the core size or size with spicules has a better correlation with the final histologic size of spiculated mass lesions.

Methods:

A retrospective study of 48-month duration from January 2014 to December 2017 of biopsy-proven invasive ductal carcinoma presenting as spiculated mass lesions on mammogram was conducted.

Results:

There were 195 patients in the study. The mean of the core size was 16.6 mm; when spicules were included the mean size was 27.4mm and final histologic size 21.1 mm. Using unpaired Student ‘t’ test difference in the means was statistically significant (p<0.0001). Pearson number (R) core size versus final histologic size was 0.535 (P < 0.001) and for size with spicules versus final histologic size was 0.495 (P < 0.001).

Conclusion:

Our study demonstrated that the core size has a stronger positive correlation to final histologic size and should be used preoperatively in decision-making about surgery.
Influence of Nonsurgical Periodontal Therapy on Serum Hemoglobin Levels Among Patients with Type 2 Diabetes Mellitus
Authors: Singh Jatinder , Kaur Inderpreet , Singh Gurpreet Inder , Saini R. G. , Gupta Hemant Kumar , Singh Rakendra
Published: September 2022

Aim:

The present study was carried out to examine the association between periodontitis and glycated hemoglobin (HbA1c) in Type 2 diabetes mellitus adults. The objective of the study was to assess the effect of nonsurgical periodontal therapy on serum levels of HbA1c in patients with Type 2 diabetes mellitus and moderate-to-severe periodontitis.

Material and Methods:

The study population consisted of 78 Type 2 diabetes mellitus patients aged 30–70 years suffering from chronic generalized periodontitis. The patients were selected randomly from among the patients reporting at medicine outpatient department from July 2018 to August 2019. They were assessed for the presence or absence of gingival bleeding, presence or absence of periodontal pockets, and loss of attachment using the Community Periodontal Index (World Health Organization, 2013). Data were analyzed using the statistical package SPSS (version 21.0) and paired t-test at P < 0.05.

Results:

The mean reduction in haemoglobin levels of patients with moderate to severe periodontitis were significantly reduced by 1.19 in Group I, 0.51 in Group II, and 0.09 in Group III respectively after 3 months of nonsurgical periodontal therapy. This periodontal therapy was clinically effective and had a significant effect on the participant's glycemic control.

Conclusion:

This periodontal therapy was clinically effective and had a significant effect on the participant's glycemic control.
Status of Public Sector Dental Health-Care Services in Nellore District, Andhra Pradesh, India
Authors: Vuyyuru Chandrasekhara Reddy , Ponnaiah Manickam , Rangari Rajeshree Narayan
Published: September 2022

Background and Objectives:

Primary health centers (PHCs) are the foundation of rural health services in India. The nonavailability of reports on the status of dental care services at public health-care centers in rural Andhra Pradesh prompted us to describe the status of dental care services provided at public health-care centers in the Nellore district of Andhra Pradesh.

Materials and Methods:

This cross-sectional study was conducted using a semi-structured interview guide, based on the Indian Public Health Standards (IPHSs) guidelines. Data were collected on the dental health workforce, equipment, and facilities available, dental care services provided in all government dental care units, and dental care services provided by PHCs without dentists in the Nellore district, from dental and medical doctors, respectively. The descriptive statistics (frequencies) were performed describing the availability of workforce, equipment, and facilities, and the type of dental care services provided.

Results:

Of 95 public health-care centers in the Nellore district, only 18 centers provided dental care services. No single center was furnished with the prescribed dental health workforce, equipment, and facilities to render comprehensive dental care services to an optimum level according to IPHS guidelines. There were neither oral health promotional activities nor outreach programs targeting rural children, families, and communities carried out at these PHCs as per the IPHS guidelines.

Conclusion:

An inadequate dental health workforce, deficient dental equipment, and facilities, and very limited dental care services were found at these public health-care centers in the Nellore district, making these services almost nonexistent to rural populations.
Intra-peritoneal migration of abdominal drain after cholecystectomy - Laparoscopic retrieval: A case report
Authors: Bindal Vivek , Gupta Shailesh , Pandey Dhananjay , Goel Tushar
Published: September 2022

Intra-peritoneal migration of abdominal drain is a rare complication. Cutting of abdominal drain and putting a colostomy bag over it is done to reduce the pain and infection and to increase the mobility of a patient, but it is also a risk factor for drain intra-peritoneal migration. This case report depicts a case of intra-peritoneal migration of abdominal drain after laparoscopic cholecystectomy and its retrieval.
Robotic re-exploration for post-operative in house complications following robotic pelvic uro-oncologic surgery: Initial experience, tips and tricks
Authors: Singh Amitabh , Khanna Ashish , Jaipuria Jiten , Gupta Shashikant , Pratihar Sarbartha Kumar , Vasudeo Vivek , Gupta Rahul , Rawal Sudhir Kumar
Published: September 2022

Purpose:

Despite widespread acceptance of robotics in urology, literature on using the minimally invasive approach for management of post robotic surgical complications is limited. Here we describe our experience with tips and tricks for robotic re-exploration of post-operative in house complications following robotic pelvic uro-oncologic surgery.

Methods:

A retrospective query of prospectively maintained database was done for all patients who underwent robotic - radical cystoprostatectomy (RCP, 437 patients) and radical prostatectomy (RP, 649 patients), from Jan 2015 or March 2021. Clinical details were collected for all who underwent a second robotic procedure during the same hospital admission for any complication related to the primary surgery.

Results:

Following RCP, 5 patients were re-explored for intestinal obstruction. Surgery was successfully completed in all with a median console time of 80 minutes. Median time to the passage of flatus and discharge from hospital following relook surgery was 3 and 6 days, respectively. Following RP, 3 patients underwent robotic re-exploration (two for reactionary hemorrhage, one for rectal injury). All three cases were managed with a median console time of 75 minutes. Robotic re-exploration was accomplished without extending the skin incision of the index surgery and we did not find an increased incidence of infectious or wound related complications.

Conclusion:

Robotic re-exploration for select post robotic urologic pelvic oncology surgery complications in the immediate and early post-operative period is feasible in the hands of experienced surgeons. Our experience can help others adopt robotics in such scenarios.
Oral management of poorly understood Papillon–Lefèvre syndrome – A case report
Authors: Sharma Deepak , Changra Nancy , Kharbanda Priyanka , Negi Shanta , Mahajan Ankit , Sachdeva Suresh Kumar
Published: September 2022

Rationale:

Papillon-Lefèvre syndrome (PLS) is a rare genodermatosis with autosomal-recessive genetic inheritanceand has features mainly palmoplantar hyperkeratosis and rapidly progressing severe periodontitis leading to early loss of deciduous and permanent dentition.

Patient Concerns:

The patient in the presented report was concerned with loose teeth, gingival bleeding and oral malodour and wanted to get missing teeth replaced.

Diagnosis:

The diagnosis was made based on medical history, clinical and radiological findings.

Interventions:

Periodontal phase I therapy included extraction of hopeless teeth, manual and ultrasonic scaling, mechanical and chemical plaque control and periodic maintenance. Missing teeth were restored by removable and fixed prosthesis. Dermatological lesions were conservatively managed.

Outcomes:

A comprehensive treatment stabilised periodontal disease of the patient and prosthetic rehabilitation improved oral health related quality of life of PLS patient.

Lessons:

PLS patients require an early diagnosis and a team approach for dermatological, periodontal complications and prosthetic rehabilitation.
Socket preservation techniques
Authors: Ebenezer Elsie Sunitha , Muthu Jananni , Balu Pratebha , Kumar R. Saravana
Published: September 2022

Background:

Alveolar bone undergoes residual ridge resorption after tooth extraction and eventually results in inadequate soft tissue and alveolus for dental implant rehabilitation. Therefore, to overcome this, socket preservation is performed immediately after tooth extraction to maximize bone formation within the socket.

Aim:

This review is aimed to give a brief overview of rationale, indications, surgical techniques, decision tree, and recent literature evidence regarding different techniques of socket preservation.

Methods:

An electronic search was performed in databases such as PubMed, Scopus, and Google Scholar with the key words socket preservation, particulate bone grafts, membranes, and platelet-rich fibrin. The articles published from August 2008 to February 2022 were included for the search.

Results:

A total of 18 articles were considered for the review which included 8 meta-analysis, 7 systematic review, and 3 randomized control trial. The outcome parameters such as clinical, radiographical, and histomorphometrical ridge dimensions were analyzed.

Conclusion:

Socket preservation is one of the effective treatment options to prevent bone resorption following an atraumatic extraction with the use of appropriate biomaterials and membranes. The reliability and power of evidence is strong for the combined technique of using bone graft and membrane.
Elucidating the pathogenicity, diagnosis, treatment, and prevention of COVID-19
Authors: Khatri Monisha Parshotam , Mahalaxmi Sekar
Published: September 2022

Background:

From the beginning of 2020, much and more has been spoken about the coronavirus and coronavirus disease-19 (COVID-19). The concepts in terms of the infection, its transmission, the treatment, and its prevention are ever changing as well as unclear.

Aim:

The Part I of this review article strived to provide a clear picture on the pathogenesis, diagnosis, and treatment of COVID-19.

Methods:

An electronic search was performed in PubMed and Google Scholar database with the keywords “Corona Virus, COVID 19, World Health Organization, Severe Acute Respiratory Syndrome (SARS), SARS-CoV-2, Pathogenesis, Diagnosis, Treatment, Plasma Convalescent Therapy, Immune system” from January 2017 to December 2021.

Results:

A total of 65 articles were included in the current review and analyzed to simplify the complicated information available in the literature.

Conclusion:

COVID-19 as said to originate from bats and transmitted through intermediatory hosts like pangolins, can be diagnosed symptomatically and with tests such as blood investigation, reverse transcription–polymerase chain reaction, computed tomography scan, saliva, or gingival crevicular fluid. Various treatment options include use of drugs such as antivirals, antimalarial, immune enhancers, nonsteroidal anti-inflammatory drugs, corticosteroids, anticoagulant therapy, and antibodies.
Detection of Sleep Paralysis by using IoT Based Device and Its Relationship Between Sleep Paralysis And Sleep Quality
Authors: Akhtar Muhammad Shoaib , Feng Tao
Published: September 2022

When a person wakes up in the middle of the night, they are paralyzed. Despite the fact that most episodes are associated with extreme terror and some might cause clinically significant suffering, little is understood about the experience. This study will analyze existing research on the relationship between sleep paralyses and sleep in general. Many studies have connected poor sleep quality to an increased risk of sleep paralysis. Awake yet unable to act, sleep paralysis occurs. This might happen between awake and sleeping. The problem is approached in three steps: Data collection, data storage, calculation and machine learning prediction of sleep paralysis. The data came from the Smart Device. The dataset has several (independent) and dependent variables (Outcome). This device has been put to the test. Each exam has its own set of features and predicted outcomes. To assess the system's validity, we executed a posture recognition accuracy test. The device was hidden on top of the bed. The controller is in charge of measurement and data collection. Experiments were conducted by collecting pressure data from a patient lying down. The person acted out his sleeping positions on a mat for a while. Machine learning has been used to predict sleep paralysis. By comparing sleep postures to the outcome, we were able to show the link between sleep qualities and sleep paralysis. Machine learning approaches have been used to predict sleep paralysis. Comparing sleeping positions with the results showed the link between sleep quality and sleep paralysis. Sleep paralysis correlates with poor sleep quality. The Random Forest model has the highest accuracy of 91.9 percent in predicting sleep paralysis in the given dataset. SVM with Linear Kernel was 80.49 percent accurate, RBF was 42.68 percent, and Polynomial was 47.56 percent. The accuracy of logistic regression was 76.83 percent. KNN had a dismal performance of 60.98%. Decision Trees and Gradient Boosting both fared well at 85.37 percent.
Iterated Hopf Ore extensions in positive characteristic
Authors: Brown Ken A. , Zhang James J.
Published: September 2022

Iterated Hopf Ore extensions (IHOEs) over an algebraically closed base field

\Bbbk

of positive characteristic

p

are studied. We show that every IHOE over

\Bbbk

satisfies a polynomial identity (PI), with PI-degree a power of

p

, and that it is a filtered deformation of a commutative polynomial ring. We classify all

2

-step IHOEs over

\Bbbk

, thus generalising the classification of

2

-dimensional connected unipotent algebraic groups over

\Bbbk

. Further properties of

2

-step IHOEs are described: for example their simple modules are classified, and every

2

-step IHOE is shown to possess a large Hopf center and hence an analog of the restricted enveloping algebra of a Lie

\Bbbk

-algebra. As one of a number of questions listed, we propose that such a restricted Hopf algebra may exist for every IHOE over

\Bbbk

.
Analysis of Zika Virus Sequence Data Associated with a School Cohort in Haiti
Authors: Alam Md. Mahbubul , Mavian Carla , Okech Bernard A. , White Sarah K. , Stephenson Caroline J. , Elbadry Maha A. , Blohm Gabriela M. , Loeb Julia C. , Louis Rigan , Saleem Cyrus , Madsen Beau de Rochars Valery E. , Salemi Marco , Lednicky John A. , Morris J. Glenn
Published: September 2022

Zika virus (ZIKV) infections occurred in epidemic form in the Americas in 2014–2016, with some of the earliest isolates in the region coming from Haiti. We isolated ZIKV from 20 children with acute undifferentiated febrile illness who were part of a cohort of children seen at a school clinic in the Gressier region of Haiti. The virus was also isolated from three pools of Aedes aegypti mosquitoes collected at the same location. On phylogenetic analysis, three distinct ZIKV clades were identified. Strains from all three clades were present in Haiti in 2014, making them among the earliest isolates identified in the Western Hemisphere. Strains from all three clades were also isolated in 2016, indicative of their persistence across the time period of the epidemic. Mosquito isolates were collected in 2016 and included representatives from two of the three clades; in one instance, ZIKV was isolated from a pool of male mosquitoes, suggestive of vertical transmission of the virus. The identification of multiple ZIKV clades in Haiti at the beginning of the epidemic suggests that Haiti served as a nidus for transmission within the Caribbean.
PEMANFATAAN TEKNOLOGI SEBAGAI MEDIA PEMBELAJARAN DALAM PENDIDIKAN ERA DIGITAL
Authors: Julita  , Dheni Purnasari Pebria
Published: September 2022

Penelitian ini bertujuan untuk menelaah pemanfaatan teknologi menjadi media pembelajaran dan penemuan pendidikan era digital diberbagia aspek. Melalui kajian penelusuran litetarur yang relevan untuk menjawab penelitian yang hendak diteliti. Hasil kajian menunjukkan saat ini kita memesuki era revolusi generasi 4.0 atau lebih dikenal dengan Era Digital. Kekhasan dari generasi ini adalah meningkatkan penggunaan teknologi sebagai penganti tenaga manusia. Dunia pendidikan tentunya akan mempunyai tantangan tersendiri dalam menyikapi perubahan yang signifikan ini. Oleh sebab itu, diperlukan reformulasi proses dari pembelajaran yang baik di sekolah maupun di luar sekolah.
MATHEMATICS CONCEPT IN ELEMENTARY SCHOOL: A BIBLIOMETRIC ANALYSIS
Authors: Sreylak Ork , Sampouw Falenthino , Didik Saputro Totok Victor , Lumbantobing Winda Lidia
Published: September 2022

The purpose of this study was to describe the trend and development of research about the mathematics concept in elementary schools in Indonesia. This study was a literature review research using bibliometric analysis. The exploration process of the articles’ published results was taken through an open-access website such as google scholar database for the last ten years. The exploration of articles published results used Harzing’s Publish or Perish software with the keywords “Konsep Dasar Matematika Sekolah Dasar” and “Mathematics Concept in Elementary School”. The results of the exploration process were analyzed by using VOSviewer software for visualization and relationship for all of the research results. This study’s results showed there were 1185 articles had been published based on articles exploration criteria. After reducing the data, there were 37 articles with the relevant criteria. The bibliometric analysis results of the relevant articles were the understanding of student mathematics concepts in elementary school, the pre-service students and teacher knowledge about the mathematics concept in elementary school, and the solution for improving students’ understanding of mathematics concepts in elementary school
Denominalizarea și doimea divin-demonică a Marelui Anonim
Authors:   Universitatea  de  Vest  din  Timișoara, Facultatea de  Muzică  și Teatru, Zonte Violeta-Simona
Published: September 2022

The domination and the divine-demonic duality of the Great Anonymous In its capacity as the metaphysical Center of the world, the Great Anonymous is also the Central Mystery, generator of an infinite variety of mysteries. Overwhelmed by the fear of a pernicious self- generation, by the danger of the appearance of “equivalent Gods“, the Great Anonymous avoids thinking positively about himself. That’s why he opts for the apophatic paradigm, defining himself by an infinity of unknowns, undisclosed and above all unnamed secrets. The denomination of the Great Anonymous is a paradoxical epistemological solution, but not an agnostic one; because through the series of negative statements, the philosopher defines what the Central Mystery of the world is not and never what it is. The nominalization of the transcendent is also present in Blaga’s dramatic work, so that God is generically called Old Man, in Noah’s Ark and Turbulence of the Waters, or the Blind Man in Zamolxe. The Old Man without a name heats up the minds of the judges (from “Noah’s Ark”): “Are you so sure that the Old Man was – the one without a name?”. Profoundly analogous to his own creation, the Great Anonymous willfully degrades and mutilates his reproductive capacities. Therefore, the world is “a mutilated Story”, and man “a mutilated God”. Violeta-Simona ZONTE The demonic side of the Great Anonymous manifests both through the anti-creative paroxysm and through the blocking of man’s access to the absolute. Using “his cherubic lieutenants”, censorship and transcendent restraint, the Great Anonymous condemns the man, from the pre-genetic state, to the ontological imperfection. The divine-demonic secondness of the Great Anonymous is reflected in the dramaturgy through the conflicting identity between God and Satan, between the Blood Brother and the Non-blood brother.
Teatrul – locul întâlnirii nemijlocite Jerzy Grotowski și actorul „sfânt“
Authors:   Universitatea de Arte din Târgu Mureș, Sabadoș Sabin
Published: September 2022

Getting to configure the profile of the “holy” actor, Grotowski remakes the entire structure of the theater, from the conditioning of the dramatic text (which constantly demands to be overcome) to the investment of the body with an unparalleled significance. Knowledge is replaced by an understanding of the actors’ gestures through emotions and a dynamiting of the social conventions. This leads to a reconfiguration of the stage dialogue, in which the spectator acquires a rank equal to that of the actor, mobilizing energies and giving meaning to the stage work.
Geografii teatrale pe firul istoriei și al râului (III): Sena – via Marly – spre Versailles
Authors:   Universitatea de Arte din Târgu Mureș, Stamatoiu Cristian
Published: September 2022

The study follows the cultural route fertilized by the Seine, after exiting Paris towards the west. It is about the impressive hydrographic adduction of the river with the help of the „Marly machine“, in order to animate the water games and the fireworks in the gardens of Versailles / Trianon palace during the reign of Louis XIV. In this space, a culture of the outdoors spectacle was developed, through royal entertainment and gallant games, but also via private theatrical performances held in various venues, of which the most imposing is the one finalized by Louis XV: the Royal Opera added to the north wing of the palace. The names of the great classics of the theatre can be linked to these spectacle events, such as Corneille, Racine, Molière, and also the musician Lully, the choreographer Beauchamp, or the intendant Viga- rani, not to mention the architectural spectacle resulting from the collaboration of the Sun King with his famous court artists: architects (Le Vau, Le Nôtre, Mansart, etc.) and painters (Le Brun, Poussin, etc.).
Creație și ideologie: de la libertatea opiniilor la „cancel culture“
Authors:   Universitatea de Arte din Târgu Mureș, Crișan Sorin
Published: September 2022

The space of cultural and language exchange (of speech, opinions, etc.) has entered a new phase which is authoritatively dominated by everything that is carried by the new and vastly adopted cultural and ideo- logical movement of African American origins, referred to as “Cancel Culture”. This movement – an extension of the previous movement, the “callout culture”, in other words, the culture of cancellation, neutralization, refusal or interdiction – sets the mission of a new conformism, becoming a controversial and polarizing topic of discussion. The phrase, borrowed from the rappers and already used in all media, hardly receives an equivalent in Romanian, becoming and echoing a type of totalitarian censorship – which I believed we got rid of – that, unfortunately, is not a simple trend adopted by the followers of Progressivism and, thus, that is not going to go away any soon.
Cryptanalysis of Rocca and Feasibility of Its Security Claim
Authors: Hosoyamada Akinori , Inoue Akiko , Ito Ryoma , Iwata Tetsu , Minematsu Kazuhiko , Sibleyras Ferdinand , Todo Yosuke
Published: September 2022

Rocca is an authenticated encryption with associated data scheme for beyond 5G/6G systems. It was proposed at FSE 2022/ToSC 2021(2), and the designers make a security claim of achieving 256-bit security against key-recovery and distinguishing attacks, and 128-bit security against forgery attacks (the security claim regarding distinguishing attacks was subsequently weakened in the full version in ePrint 2022/116). A notable aspect of the claim is the gap between the privacy and authenticity security. In particular, the security claim regarding key-recovery attacks allows an attacker to obtain multiple forgeries through the decryption oracle. In this paper, we first present a full key-recovery attack on Rocca. The data complexity of our attack is 2128 and the time complexity is about 2128, where the attack makes use of the encryption and decryption oracles, and the success probability is almost 1. The attack recovers the entire 256-bit key in a single-key and nonce-respecting setting, breaking the 256-bit security claim against key-recovery attacks. We then extend the attack to various security models and discuss several countermeasures to see the feasibility of the security claim. Finally, we consider a theoretical question of whether achieving the security claim of Rocca is possible in the provable security paradigm. We present both negative and positive results to the question.
Investigation of the penetration of the counter-body in the nitride zone of steels and analysis of concomitant characteristics
Authors:   Technical University of Sofia, Plovdiv Branch, Zyumbilev Angel , Tonchev Nikolay ,   University of Transport, Sofia, Bulgaria, Yankov Emil ,   University of Ruse “Angel Kanchev”, Ruse, Bulgaria, Zyumbilev Iliya ,   Technical University of Sofia, Plovdiv Branch, Gaydarov Valentin ,   University of Transport, Sofia, Bulgaria
Published: September 2022

The present research summarises the influence of technological modes based on experimental studies of steels BH11 and BH21 (BS 4659) for hot work in ion nitriding. The peculiarity is that one or several precisely defined modes are not fixed, but a group of parameters from the action of the considered technology in a planned experiment is studied. As a result, the technological modes of ion-nitrided steels are determined, corresponding to the minimal and maximal penetration of the counter-body in the nitrided layer. The obtained results are based on additional research related to microhardness and relative wear resistance. In this way a finished idea of the tribological properties of ion nitrided steels with a specialised purpose is obtained. The tools by which the problem is solved are design of experiments (DOE), modelling and single-criteria optimisation of controlled quantities. The main contribution of the paper is a formalised determination of the influence of the technological parameters of ionic nitriding on the phase composition of the nitrided zone and respectively on the wear resistance of the surface layer.
PRUŽANjE USLUGE MIRENjA U REŠAVANjU KOLEKTIVNIH RADNIH SPOROVA
Authors:   University of Kragujevac, Faculty of Law, Urdarević Bojan
Published: September 2022

The Republic of Serbia does not have a long tradition related to conciliation service in collective labour disputes. This paper analyzes courtbased and out of court conciliation, starting from beginnings to the present situation in conciliation services, as well as the institutional framework in which such services were first applied and where conciliation services are now provided. We concluded that the current legal framework in this field has not been used to its full potential. Main reasons being: low level of social dialogue, weak trade unions and the State that is not interested enough in labour relations. In conclusion, author propose ways in which the situation could be improved so that the advantage of the conciliation service could be fully appreciated.
NEPOŠTENA POSLOVNA PRAKSA U SAVREMENIM USLOVIMA POSLOVANjA
Authors:   University of Kragujevac, Faculty of Law, Mihajlović Borko
Published: September 2022

After enactment of EU Directive on unfair commercial practices, different forms of unfair and unconscious behaviors of traders have come in the centre of interest of modern legal theory. In the first part of this paper, the author analyzes purpose of existence of prohibition of unfair commercial practices, as well as scope of application of this prohibition,using as a starting point scope of application of Directive on unfair commercial practices. Afterwards the author makes a review of legal regulation of unfair commercial practices in Serbian law, which, modeled on EU law, adopts so called three level approach in the regulation of this institution. Finally, the author points to different forms of realization of consumers’ protection from unfair commercial practices, while special attention has been dedicated to the provisions of Consumer Protection Act on protection of collective interests of consumers.
PERSPEKTIVE EKOLOŠKOG OPOREZIVANjA KAO EKONOMSKOG INSTRUMENTA ZA ZAŠTITU ŽIVOTNE SREDINE U REPUBLICI SRBIJI
Authors:   University of Kragujevac, Faculty of Law, Stojanović Predrag
Published: September 2022

In more developed countries for almost several decades, Green Taxes and "Greening" Tax Systems represent - requisite reality, and on the other hand, for developing and countries in transition - still nothing but queues in different strategies and programmatic Acts. It seems positive that there is a tendency to normative inclusion of all payments related to the use of public goods in a legitimate text and as well as normative arrangement of excise taxation of electricity considering the fact that through these norms a significant incentive towards renewable energy sources is provided. Although evidently there are certain normative data related to environmental protection, unfortunately, the Republic of Serbia still represents a typical country of delayed transition that "draws" many ecological issues as the weight from past. Certainly, what could be useful to the political elites of underdeveloped countries, specifically countries in transition, is the fact that they could use positive and negative experiences of those legal systems that have already carried out the ecological reforms
Federal Policy Building Blocks to Support a Just and Prosperous New Climate Economy in the United States
Authors: Shrestha Rajat , Neuberger Jillian , Saha Devashree
Published: September 2022

The report estimates the socioeconomic impact of federal climate policies under three mitigation scenarios. These mitigation scenarios focus on tax incentives, climate-friendly infrastructure investments, and sector-based performance standards—many of which have been enacted in the 2021 Bipartisan Infrastructure Law and the 2022 Inflation Reduction Act.
The Mathematical Modeling of the Flow Variation of Natural Gas Extraction Wells Depending on the Diameter of the Mixing Pipe
Authors:   Ph.D. School, Oil-Gas University Ploiesti, Romania, Damascan Timur Chis, Alexandra
Published: September 2022

The exploitation of natural gas deposits also requires the transport of the extracted fluids through pipelines to their treatment facilities. Usually the extracted fluids contain, in addition to methane, ethane, liquid fractions of propane, butane, hexane and sometimes salt water associated with the deposit. Given that the delivery of natural gas for consumption must be carried out without water and oil liquids, the flow rates of the gas extraction wells are taken in two-phase mixing pipelines and transported to a single treatment facility. The article presents the impact of the diameter of the mixing pipes on the gas flow