bluuebunny/crossref_metadata_2025 huggingface dataset:
A glimpse of axion phenomenology in astrophysics
Authors: CARENZA Pierluca
Published: April 2023

The old and successful idea of using astrophysical systems as laboratories for fundamental physics is becoming extremely popular nowadays. Axions are a remarkable example of Feebly Interacting Particles playing an important role in astrophysical phenomena. It is well-known that stars are powerful axion factories, giving strong constraints on their properties. Aspects of the axion phenomenology in horizontal-branch stars and supernovae are reviewed.
ANALYZING THE SUCCESS FACTORS OF THE ISRAEL EMPLOYMENT SERVICE PLACEMENT PROGRAM
Authors:   Azrieli Academic College of Engineering, Shalev Chen , Davidov Pini ,   Azrieli Academic College of Engineering, Graguer Sergei ,   Ashkelon Academic College
Published: April 2023

Unemployment is one of the world’s most challenging tasks to solve, with 6.3-6.5% of the world’s population unemployed in 2021 (4.6% unemployment in Israel). Job placement programs for the unemployed can reduce the duration of unemployment and government unemployment expenditures. This paper explores one of the Israel Employment Service programs for 2016-2019, based on 56,000 job seekers and 82 job seeker profiles. The main findings of the study are: (1) there is no difference between good placement of job seekers from the Arab sector (49%) compared to job seekers from the other population groups (51%); (2) the longer a job seeker remains in the program, the lower is the probability of their returning to the labor market. Moreover, the increased number of activities the job seekers are engaged in can negatively affect their chances of finding a job; (3) socioeconomic factors such as education, disability, religion, and number of children affect job placement.
CAN THE POLICY ENVIRONMENT IMPROVE POLICY IMPLEMENTATION PRACTICE?
Authors:   Universitas Lampung, Tresiana Novita , Duadji Noverman ,   Universitas Lampung
Published: April 2023

This study aims to introduce the concept of social capitalbased on public policy environment into the study of policy implementation modalities. Using recent empirical data, it describes the challenge of institutionalizing a new set of social capital and its relationship within the framework of governance quality to address the question of how social capitalis implemented . To answer this question, the authors used qualitative methods and case studies to discuss crucial aspects of regulating the institutionalization of social capital development and the interaction of social capital within the governance framework that government will adopt. The group of independent home-based workers at the village level was selected based on national policy and program support, which provides a comprehensive empirical foundation for observing it inside the village governance framework.The findings show that social capital can improve policy implementation through 2 things:strengthening social capital through affirmative policy support and programs for special groups/forums. Development of a variety of decision-making innovations, such as women's network leadership meetings, village discussions, women's schools and an important role in formal planning at the village level. Both are correlated to the institutionalization of a new value system, relations between institutions, and the formation of new public values that are more genuine, and reinforce the diversity of previous implementation values. Social capital is the most elementary part for the successful implementation of public policies initiated by the state. The impact is that policy implementation has the ability to reduce the socio-economic costs of development, and functions to synergize the achievement of decent work and self-reliance for groups of women homeworkers.
THE MODEL OF FACTORS AFFECTING WORKERS' QUALITY OF WORKING LIFE: A COMPARATIVE STUDY BETWEEN THAI AND MIGRANT WORKERS
Authors:   Mahidol University, Sangthong Duangruthai , Natrujirote Waruesporn ,   Mahidol University
Published: April 2023

The aim of this research was to study the factors that affected the quality of working life of Thai and migrant workers and how labour public management affected the quality of working life. This study employed a mixed-methods research design which consisted of qualitative and quantitative methodology. The first phase was qualitative research, in-depth interviews and the focus group interviews were conducted with Thai and Burmese workers. The data obtained in the first phase was analyzed using content analysis. The second phase was quantitative research in which questionnaires were collected from 400 participants. The data obtained in this phase were analyzed using exploratory factor analysis to describe the factors that affected the quality of working life of Thai and Burmese migrant workers. The results showed that the factors affecting the quality of life of both Thai and migrant workers are the following: 1) government policies such as public health, economic aspects, and education can improve the well-being of the workers; 2) the quality of working life can be improved through the support of the government labour administration; it can provide labour protections and welfares following the international labour law and diversity within the workplace according to the human rights principles; 3) government officials’ attitudes toward migrant workers discriminate against them. These findings can be used as the guidelines to develop Thai and migrant workers’ management. The results can be practical knowledge to support the performance of government agencies in the future.
Antimicrobial resistance: The next probable pandemic
Authors: Krishnapriya U
Published: April 2023

Even as the world continues to grieve for those lost to the SARS-CoV-2 pandemic, another pandemic is brewing that has the potential to kill hundreds of millions of people in a century or less. In the far future, patients’ lives are being cut short in hospital wards by the stealthy but widespread epidemic of antimicrobial resistance. Unfortunately, the global health community is now confronting the silently growing pandemic that could threaten some of the most significant advancements in contemporary medicine. Considering that current medical professionals will eventually pass the torch to their students, who will hopefully lead to further improvements in antimicrobial resistance and antibiotic usage, medical students have the opportunity to contribute to a long-term solution to this problem. Future medical professionals, then, need to be better equipped to make prudent and economical use of antimicrobials.
Monitoring Production of Bacterial Cellulose by Acetobacter xylinum 0416 with Fuzzy Logic via Simulation
Authors:   Research Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Sulaiman Nur Najihah , Abd. Rahman Norliza ,   Chemical Engineering Programme, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Esa Faezah ,   Chemical Engineering Programme, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia
Published: April 2023

Bacterial cellulose (BC) is a unique biopolymer with high mechanical strength, crystallinity, purity and biocompatibility which make it suitable in various fields. An economical and high quantity production in industrial scale has become a concern in BC production. This study emphasizes on the usage of matured coconut water, an agro waste as the fermentation medium of bacterial cellulose synthesis by Acetobacter xylinum 0416. A central composite design was employed to predict the optimum production of BC based on a combination of three parameters that are initial pH, temperature and inoculum size. To stimulate and improve the performance in fermentation, a fuzzy logic system was designed. The controlled variables are pH and temperature whereas flowrate of cooling water and acid or alkaline flowrate are the manipulated variables respectively. The temperature of 32˚C, pH 4.5 and 15% of inoculum size were found as the optimum condition to achieve a maximum dry weight of BC in this fermentation. The optimal value of pH is the set point for pH (4.5) and temperature (32˚C). For the size of inoculum, it is considered constant for the control method of fuzzy logic. The results show that control and monitoring of pH and temperature reached set point as well as ability to maintain the set point after the introduction of disturbance for pH from 4.5 to 4.3 and temperature from the 32˚C to 30˚C. This shows the effectiveness of the control system by using fuzzy logic.
Application of Alcohol Fuel Properties in Spark Ignition Engine: A Review
Authors:   Faculty of Mechanical Engineering, Universiti Teknologi MARA (Pulau Pinang), 13500 Permatang Pauh, Pulau Pinang, Sharudin Hazim , Abdullah Nik Rosli ,   Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Malaysia, Mamat A.M.I. ,   Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Malaysia, Badrulhisam N.H. ,   Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Malaysia, Mamat Rizalman ,   Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
Published: April 2023

Rapid depletion of petroleum resources had raised the awareness of reducing the dependency on the fossil fuels by means of alternative fuels. Alcohols had emerged as the most competitive candidate among the well-known alternative fuels because it can be produced from renewable resources such as waste material. Some of the examples of alcohols are methanol, ethanol, and butanol. Each of these alcohols has the capability for its utilization in vehicles due to its cheap price than the other alcohol and has similar chemical properties to gasoline and diesel. Currently, only few research papers had discussed the alcohol fuel properties in the collective form of information including adverse effect of alcohol fuel usages and its responses in spark ignition engine performance and emissions. Therefore, this paper is focusing on the physical and chemical properties of alcohol fuels with recent literature data specifically for spark ignition engines. In addition, the usages on the properties of alcohol fuel to the current available spark ignition engine will also be review in this paper. Advantages and disadvantages of alcohol fuel usages are also summarized. This review indicates that continuous research and development still need to be done especially on alcohol fuel properties as it will give greater engine performance and better emissions.
Quantification of Constraint Loss in Three-Dimensional Non-hardening Crack-tip Fields
Authors:   School of Mechanical Engineering, Universiti Sains Malaysia, Nibong Tebal, 14300 Penang, Yusof Feizal , Karh Heng Leong ,   School of Mechanical Engineering, Universiti Sains Malaysia, Nibong Tebal, 14300 Penang
Published: April 2023

Analysis of crack tip stress field is important in determining of the integrity of structures under the influence of cracks and defects. Current techniques to analyze crack tip stress fields are based on two-dimensional approach and very conservative. Efforts to develop three-dimensional crack tip stress analysis methods have been inconclusive with various drawbacks. In this paper, the structure of three-dimensional crack tip fields has been examined under non-hardening condition which will allow a detail examination of crack tip stresses in the absence of strain hardening effects. Three-dimensional crack tip analysis is based on three-dimensional bend and tension cracked models. The fields along the crack front were examined as a function of load level, J, and thickness, x3/t. The results showed that at the crack tip (r = 0), a group of asymptotic fields develop which feature a constant stress sector directly ahead of the crack tip. Within this sector the fields differ hydrostatically while being similar in respect of the maximum stress deviator. From the behavior of the crack tip stresses, explicit expression of crack tip constraints are given for constraint loss in terms of maximum stresses due to out-of plane effects at θ=0° and along the crack front 0  x3/t  0.5. Significantly, the results showed that constraint based fracture mechanics can be extended to fully three dimensional crack tip fields.
Fatigue Analysis of Hybrid Composites of Kenaf/Kevlar Fibre Reinforced Epoxy Composites
Authors:   Department of Mechanical Engineering Faculty of Engineering, Universiti Pertahanan Nasional Malaysia (UPNM), Muhamad Paudzi Mohd Khairul Faidzi , Abdullah Mohamad Faizal ,   NDUM Institute of Executive Education (NIEED) UPNM, Ali Aidy ,   Department of Mechanical Engineering Faculty of Engineering, Universiti Pertahanan Nasional Malaysia (UPNM)
Published: April 2023

This study is aimed to investigate the fatigue limit of the hybrid composites of kenaf and kevlar reinforced epoxy. Most of the engineering components used in the military appliance and in high technology competition like Formula One Racing car, uses synthetic fibre as their main component in their structural design due to their high mechanical properties. However, by using this material in a small portion of quantity is extremely expensive, uneconomical and becomes over-designed. In this study, kevlar-29 and a woven kenaf being hybrid together using technique of vacuum resin infusion. The fatigue test was conducted at a constant stress amplitude with frequency of 3 Hz, in accordance to ASTM D3479. It was found that the transition region has significant influence on the fatigue results since there are significant reductions on Young’s Modulus. In addition, the endurance limit for the developed composites was almost similar with the Aluminium Alloy with known knee of shape determining the exact fatigue limit. The fatigue limit was read at a million cycles (1005498 cycles). The SEM study has showed the damage mechanism of this developed composites which is started by matrix cracking and followed by fibre breakage and delamination between kenaf fibre and kevlar fibre once the develop composite reach the failure point. Thus, this development of hybrid composite shows good agreement findings and has high potential to replace or reduce the usage of synthetics fibre.
Efficiency of the Rocking Kiln – Fluidised Bed for Charcoal Production
Authors:   Malaysia Nuclear Agency (Nuclear Malaysia), Kajang, Malaysia, Che Mat Isa Mohamad Azman , Sopian Kamaruzzaman ,   Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia (UKM), Bangi, Malaysia, Mat Sohif ,   Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia (UKM), Bangi, Malaysia, Razali Halim ,   Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia (UKM), Bangi, Malaysia
Published: April 2023

Rocking Kiln – Fluidised Bed (RK–FB) combustor is a system using thermal technology for processing biomass waste. This system is capable of processing biomass with complete combustion to produce energy and carbonisation for production of biomass – derived fuel (BDF) pellet. A research has been done to transform the biomass waste such as kernel shell into BDF using the newly invented RK-FB technology. This research was also conducted to obtain preliminary data parameters such as the suitable temperature, the angle of the system, residence time, total air for fluidization, rocking speed and reduction of weight sample. The samples used in this research were the palm oil kernel shells. The results of the studies showed that the palm oil kernel shells were combusted evenly using the new parameters; temperature, angle of the rotary kiln, residence time and rocking oscillation frequency, rocking displacement, weight reduction of palm oil kernel shells after combustion and calorific value of product produced and soaking the palm kernel shells in the phosphoric acid solution shows better results than without soaking the palm shell in the phosphoric acid before combustion. The produced charcoal has calorific value of 33 MJ/kg which is better than bituminous coal with calorific value, 25-30 MJ/kg. Due to the high calorific value of the charcoal produced, hence charcoal can be used for the energy production.
Surface Roughness Effects Studies in Transportation Industries
Authors:   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia, Harun Zambri , Abbas Ashraf Amer ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia, Nugroho Bagus ,   Aerodynamics and Flight Mechanics Group University of Southampton, Southampton, SO17 1BJ, UK, Chan Leon ,   Department of Mechanical Engineering, Universiti Tenaga Nasional, 43000 Kajang, Malaysia, Mat Sohif ,   Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia
Published: April 2023

Aerodynamic and skin friction effects are two main factors determining fuel efficiencies in the transportation industry. In any of transportation areas, either road transport, railway, maritime or aerospace, fuel efficiency has become interesting and sometimes sensitive topics. Data were from experimental studies, simulations as well as news and discussions in engineering bulletins dan fuel efficiency, i.e. skin friction. Studies in skin friction are very important because skin friction drag account the majority of drag in a streamlined body e.g. tankers. The use of biomimetic, i.e. the study of the structures and functions of biological systems in the design of engineering systems has attracted a lot of attentions in the last few decades. Mimicking the arrangement and pattern on shark scales and how owls quietly fly has contributed to progress in various engineering fields. Simulation works are carried out especially to reduce costs and to obtain estimation of drags prior to experiment works. However, current computational resources only allow turbulent flows to be simulated at low and medium Reynolds numbers - far below that of engineering flows. This has lead researchers to develop empirical models which can be used for practical engineering applications so that engineers are able to obtain a estimate of the drag on the surface. Throughout the years, many models have been proposed but none has been universally reliable. Indeed, the turbulent flow over rough surfaces is a complex field of research and much is still to be discovered.
Design and Simulation of the Dual-Mass Two-Axis MEMS Inertial Sensor
Authors:   Southern Federal University, Taganrog, 347922, Russian Federation, Lysenko I.E. , Denisenko M.A. ,   Southern Federal University, Taganrog, 347922, Russian Federation, Isaeva A.S. ,   Southern Federal University, Taganrog, 347922, Russian Federation, Kozlov A.V. ,   National Research University of Electronic Technology, Zelenograd, 124498, Russian Federation
Published: April 2023

We have developed an inertial sensor, which is a functionally integrated microelectromechanical system that includes a two-mass two-axis gyroscope-accelerometer. The device is a highly sensitive multisensor that allows solving problems of object orientation in space and control of its movement parameters. The article presents the design and topology of the sensor element. The results of modeling obtained using CAD ANSYS are presented. The scope of this inertial sensor is diagnostic systems for the needs of railway transport.
The effect of Switching Resistive States in LED Structures based on InGaN/GaN
Authors:   Ulyanovsk State University, Ulyanovsk, 432017, Russian Federation, Vostretsova L.N. , Rebenek V.A ,   Ulyanovsk State University, Ulyanovsk, 432017, Russian Federation, Vostretsov D.Ya. ,   Scientific-Manufacturing Complex "Technological Centre", Zelenograd, Moscow, 124498, Russian Federation
Published: April 2023

In this paper, we study the change in the electrical characteristics of InGaN/GaN-based LED structures caused by the flow of a large current in the pulsed mode. A stable switching between high-conducting (resistive) and low-conducting (light-emitting) states was found, accompanied by a change in current transfer mechanisms. The movement of mobile defects and the formation of conductive filaments (channels) in the region of spatial charge is considered as the main switching mechanism.
Numerical Study of Aperture Shape Effects in Deep Cryogenic Etching of Silicon
Authors:   aliev Institute of Physics and Technology of Russian Academy of Sciences, Moscow, Russian Federation, Rudenko M.K. , Miakonkikh A.V. ,   aliev Institute of Physics and Technology of Russian Academy of Sciences, Moscow, Russian Federation, Lukichev V.F. ,   aliev Institute of Physics and Technology of Russian Academy of Sciences, Moscow, Russian Federation
Published: April 2023

Cryogenic etching of silicon in SF6/O2 plasma is the process of choice for fabrication of deep high aspect ratio structures with strict requirements for the sidewall angle, surface roughness and contamination, including MEMS, X-ray optics, and supercapacitors. The manufacturing of such structures, containing features of various size and shape, poses new challenges for the etching process optimization, since the key parameters of the resulting structures depend on the local aspect ratio and the shape of the mask aperture. As an aid in process optimization, we propose a three-dimensional Monte-Carlo simulator for the cryogenic etching of complex structures. It employs a surface kinetics model tuned to SF6/O2 process in 2.5D geometry and cubic voxel representations of the simulation domain. Systematic study on cryogenic etching of test structures with different mask shapes and aspect ratios is performed and principal mechanisms affecting etching results are identified.
The Issue of Loneliness in the Works of Lesia Ukrainka
Authors:   Uman national university of horticulture, Domoroslyi Valentyn
Published: April 2023

Human lives in a world that requires from up communicativeness to reach success as success is key to social recognition. One struggles for a place in society, but the toughest struggle goes on with oneself to answer an eternal question: «Who am I?». Paradoxical nature of this struggle lies in the fact that by defining oneself among others a human positions oneself according to how others want to see a human and the real «I» is hidden even from oneself. So, a human «socializes», becomes a member of society that teach one to feel loneliness, underlines importance of belonging to a community and if needed demonstrates alienation. Loneliness and alienation always found its reflection in everyday life, social and humanitarian research, found its special manifestation in art and literature. During research it was established that one of the main topics in writing of Lesia Ukrainka was spirituality of a human based on a humanistic ideal. It is noted, that her activity was and is a foundation for demonstration of humanism which is based on heyday of individuality. It is emphasized that Lesia Ukrainka developed a distinctive and wholesome system which is characterized as a humanistic individualism. It is acknowledged that one of the main issues, raised in her writing, was loneliness. Exactly the loneliness because of which a human is distant from everyday life, from what is considered a norm in activity of a society. Such vision of an issue additionally defines its relevance. Taking into consideration that within conditions of development of Ukrainian society we have a deep crisis of self-identification which causes development of loneliness and alienation and prevents consolidation of Ukrainian community. However, full-scale Russia-Ukraine war that started on 24 February 2022 unified Ukrainian society which showed ability to overcome feelings of loneliness and alienation by consolidation in a single whole for survival as a separate ethnic group.
Epidemiological study of patients presenting with anxiety and depression, in their post COVID-19 phase
Authors: KL Bansal , S Kumar , B Kumar , ML Goyal , M Gaur
Published: April 2023

Background: COVID-19 caused havoc on the mankind. Post COVID-19 effects were also very painful. Post COVID-19 symptoms affected almost every organ system of the body not only physically, but also had a very profound effect on psyche of different individuals. We studied prevalence of anxiety and depression in post COVID-19 phase. Materials and methods: All patients attending various outpatient Departments, who had positive RTPCR for COVID-19, more than 3 months before the present symptoms, were included in this study. The patients were divided in two groups depending upon severity of the COVID-19 infection in past. Group-I patients were treated for COVID-19 on domiciliary basis while those required admission to hospital for treatment for COVID-19 were included in Group-II. Scoring system decided if the patient was normal or had anxiety or depression. Results: Both anxiety and depression were common in post COVID-19 phase. Group-II patients were affected more 38.65% (167 out of 432) as compared to only 10.13% (62 out of 612) of Group-I patients. Depression was seen in 52 out of 237 (22.94%) in males as compared to female 20 out of 195 (10.25%) in Group-II. Anxiety was also more common in males in Group-II, 62 out of 237 (26.18%) than females 33 out of 195 (16.92%). Conclusion: Both anxiety and depression were very common post COVID-19 infection. Hospitalized patients suffered more than those who had milder disease and were treated at home for COVID-19. Males suffered more than the females.
Mesothelial cyst, rare and hard to diagnose: A case report
Authors: CH Vasundara , RJ Devi , GJ Pricilla
Published: April 2023

The mesothelial cysts of the round ligament of uterus are rare. They are misdiagnosed as ovarian/ para ovarian cysts, inguinal hernias, abscess. We report a case of 48-years-old female with gradual painless distension of abdomen. Up on explorative laparotomy cyst was seen arising from right round ligament. Excision of cystic mass was done and pathologically confirmed mesothelial cyst. Establishing accurate per operative diagnosis based on clinical findings before surgery is very important and challenging. Ultrasound and computerized tomography (CT) scan are the imaging modalities used for diagnosis, but these may not be able to differentiate an ovarian cyst from round ligament mesothelial cyst.
Histopathological panoroma and clinocopathological correlation of Hansen’s disease in tertiary care hospital
Authors: S Agrawal , D Sarate , S Agrawal , V Ujade , SH Warke , A Jungare
Published: April 2023

Background: The present study was undertaken to study the histopathological features of leprosy in skin punch biopsies and to categories them in to various type based on microscopy and bacterial index. The aim of study was to know the role of histopathology in diagnosis of Hansen’s disease and to study the clinicohistopathological correlations of suspected cases of Hansen’s disease. Materials and methods: A retrospective hospital-based study of clinically diagnosed leprosy cases was conducted over a period of one year (April 2021 to March 2022). Lesional skin biopsies obtained were fixed, processed and stained with Haematoxylin and Eosin (H&E) followed by Fite-Faraco staining. The lesions were classified on microscopy as per Ridley-Jopling classification. Results: 63 Skin biopsies were obtained from patients with age range of 14-72 years. Highest incidence was in age group of 31 – 50 years. There was male predominance with male to female ratio of 2:1. Clinically borderline Hansen’s (BB) (25.40%) was the most frequent subtype observed followed by borderline lepromatous (BLH) (19.04%) and lepromatous Hansen’s (LL) (19.04%). On histopathology we found tuberculoid Hansen’s (TT) (28.57%) was the most frequently observed subtype followed by borderline tuberculoid Hansen’s (BT) (19.04%). Fite stain revealed lepromatous bacilli in all cases of LL, BL, histoid and indeterminate Hansen’s; whereas bacilli could be demonstrated in six cases of BB, eight cases of BT and two cases of TT. Conclusion: Early diagnosis of leprosy is clinically difficult as patient present in different clinicopathological form, depending on host immune status. Therefore combined clinical, histopathological and bacteriological features are required for accurate diagnosis and classification.
Hyponatremia in sepsis and its association with SOFA score: An observational cross sectional study
Authors: S Kumar , K Pratima , R Bhattacharya , SN Ambedkar , RP Saini
Published: April 2023

Background: Sepsis is the one of the leading causes of hospital admissions and death in India and hyponatremia in sepsis is known to be an independent risk factor for mortality. Aim of the study was to determine the prevalence of hyponatremia in sepsis and its association with SOFA (sequential organ failure assessment) score. Methodology: This is an observational cross-sectional study in a tertiary hospital of New Delhi India. A total of 95 patients with sepsis and more than 18 years of age were enrolled in the study over 18 months period. Blood samples were drawn for estimation of serum sodium and other investigations within 24 hours of admission of patients presenting with sepsis or diagnosis of sepsis if it develops during the hospital stay. Results: Prevalence of hyponatremia in sepsis patients were 69.47% (n=95). No significant association was seen in SOFA with severity of hyponatremia (p value >.05). Conclusion: No statistically significant correlation was observed between SOFA score and presence of hyponatremia or the severity of hyponatremia in the study subjects. Hyponatremia is a common in sepsis patient.
Effect of vaccination on clinical outcomes in COVID-19 positive chronic kidney disease patients on haemodialysis
Authors: H Naseem , E Jyothi , A Ibrahim , S Thasnim
Published: April 2023

Introduction: Coronavirus disease 2019 (COVID-19) resulted in high mortality worldwide, with significantly higher mortality among patients with comorbidities including chronic kidney disease (CKD). Vaccines were developed against COVID-19 and it was given emergency approval because of the associated high mortality. There are only few studies on the efficacy of vaccine in CKD patients on haemodialysis. Effect of vaccination on clinical outcomes in COVID-19 positive CKD patients on haemodialysis was studied. Materials and methods: In this retrospective study on CKD patients on haemodialysis with confirmed COVID-19 infection, comparison was done on the clinical outcomes between the vaccinated and unvaccinated population. Results: Of the 104 patients, 74 patients were vaccinated against COVID-19 and 30 were unvaccinated. The study population received either covishield (50) or covaxin (24) which were the approved vaccines in India at that time. Among the vaccinated group 15 (20%) needed invasive mechanical ventilation and 16 (53%) in the unvaccinated group (P value 0.001). There were 16 (22%) deaths in the vaccinated group and 15 (50%) in the unvaccinated group with a significantly higher mortality in the unvaccinated group (P value 0.005). 11 (21%) patients on covishiled and 4 (18%) on covaxin needed invasive mechanical ventilation and there were 12 (24%) deaths in the covishield group and 4 (18%) in covaxin group. Conclusion: Severity of disease and mortality is less in vaccinated CKD patients on haemodialysis compared to unvaccinated reiterating the importance of vaccination against COVID-19 in high risk patients.
Intraductal photodynamic therapy and its combination with intra-arterial chemoinfusion in the treatment of inoperable patients with Klatskin tumor
Authors: Kozlov Alexey V. , Polikarpov Aleksey A. , Tarazov Pavel G. , Moiseenko Andrey V. , Jutkin Maksim V. , Shapoval Sergey V. , Turlak Anastasia S. , Granov Dmitrii A.
Published: April 2023

Background: A palliative or symptomatic treatment is indicated for 7080% of patients with Klatskins tumor because of the advanced lesion volume and the patients grave condition. Hepatic arterial infusion chemotherapy, chemoembolization, radioembolization are successfully used in the treatment of hepatocellular carcinoma and liver metastases. Aim: to estimate the immediate and long-term results of photodynamic therapy (PDT) and its combination with hepatic arterial infusion in inoperable patients with Klatskin tumors. Methods: Between 2010 and 2021, 83 palliative PDT sessions (from 1 to 8, average 2.4) were performed in 82 patients as a single treatment or in combination with hepatic arterial infusion. In all cases, percutaneous transhepatic biliary drainage was previously performed; no chemotherapy was applied. Two groups of 48 patients were stratified according to the ECOG status (23) and the numbers of PDT sessions (no more than two). The treatment group of the combination therapy consisted of 24 patients (13 male, 11 female) aged 38 to 85 (mean 63) years with the ECOG status of 24 (mean 2.4). This group received PDT with hepatic arterial infusion using a GemCis regimen. On average, 1.4 PDT sessions were performed, the treatment started on the 89th (27225) day after the biliary drainage. The hepatic arterial infusion was performed on the 2d3th day after the PDT. The control group received only PDT and consisted of 24 patients (13 male, 11 female) aged 51 to 83 (66 on average) years, with the ECOG status of 23 (mean 2.6). On average, 1.4 PDT sessions were performed, starting on the 106th (32405) day after the biliary drainage. Results: There were no serious adverse events associated with PDT in both groups. Toxic complications of hepatic arterial infusion were observed in 13 of 24 patients (54%): III grade hematological (54%) and gastrointestinal (69%); all were eliminated with medical therapy. Complications of the percutaneous transhepatic biliary drainage in three patients (hemobilia, n=2, and sepsis, n=1) were estimated as grade III by the CIRSE classification (2017) and successfully treated without surgery. In the combination treatment group, the overall mean survival and median survival were higher than those in the control group: 327.939.8 days (10.9 mo) versus 246.931.2 days (8.2 mo) and 275 days versus 244 days. However, these differences did not reach the statistical significance (p=0.12). Conclusions: PDT is a safe method of a palliative treatment of critically ill patients with Klatskin tumor (ECOG 23). PDT alone has limited clinical efficacy. A combination of PDT and hepatic arterial infusion does not cause serious complications and may increase the survival rates.
Electrochemical measurements of the levels of nitric oxide metabolites in the blood serum
Authors: Goroncharovskaya Irina V. , Evseev Anatoly K. , Klychnikova Elena V. , Tazina Elizaveta V. , Bogdanova Alina S. , Shabanov Aslan K. , Petrikov Sergey S.
Published: April 2023

Background: Sepsis is a serious clinical condition caused by a dysregulated immune response to infection resulting in multiple organ failure. In the pathogenesis of sepsis, especially that of septic shock, great importance is given to the endothelial marker of vascular regulation, nitric oxide (NO). In septic shock, dysregulation of the vascular tone plays a key role in the development of hypotension. Therefore, the control of the level of nitric oxide and its stable metabolites in critically ill patients is a very important task. Aim: the aim of this study was to evaluate the potential of the electrochemical nitrite detection in the patients blood serum. Methods: The levels of nitric oxide stable metabolites in the blood serum of healthy individuals (n=20) and septic patients (n=25) were studied by the electrochemical method using a composite electrode and by the spectrophotometric method using the Griess reagent. Results: The data in the groups of healthy people and patients with sepsis differ significantly (p 0.00001) both when measured using electrochemical and spectrophotometric methods. The median value of the current response in healthy people was 0.41 A (0.33; 0.55), and the total content of nitric oxide metabolites (NOx) was 26.8 mol/L (20.8; 31.0), while in patients with sepsis, these values were 0.79 A (0.61; 1.28) and 38.89 mol/L (29.64; 57.45), respectively. A negative correlation was found between the data obtained for practically healthy persons (r=-0.696, p=0.0007). Conclusion: The obtained results allow us to conclude that the nitrite measurement in the blood serum by amperometry using a composite electrode is promising as a diagnostic technique.
The Dilution of Rights as a Stage in the Development of the Institution of Property
Authors:   Plekhanov Russian University of Economics, Komarova Irina P. , Ustyuzhanina Elena V. ,   CEMI RAS, Khodzha Kava ,   Plekhanov Russian University of Economics
Published: April 2023

The work is devoted to the consideration of two trends in the development of property relations – the trend towards greater specification of individual rights, which is characteristic of the market economy model, and the trend of dilution of rights and incompleteness of obligations that is typical for the network model of relations. For a long time, the prevailing point of view in economic research was that a high certainty of property rights is a necessary condition for the effective development of the economy. The article presents the main arguments of the supporters of this position. At the same time, within the framework of the new institutional theory, the two trends casting doubt on this postulate emerged – the theory of property regimes and the economic theory of contracts. The article justifies that under certain conditions strict certainty of property rights may create some barriers to improving the efficiency of economic interaction. Such ways of organizing economic interaction as cooperation and partnership can be based on a system of implicit expectations, which are a classic example of a fuzzy specification of rights and obligations. The authors note that the dilution of rights is characteristic not only for a stationary state – the determination of rules for accessing resources, the order of its use, and the order of changing both of them. The dynamic perspective of the property problem is no less important – the dilution of obligatory rights associated with contractual relations. In real practice incomplete contracts characterized by a fuzzy specification of mutual rights and obligations are common. Thus, in the modern economy, a fuzzy specification of rights is characteristic of both the static (property rights) and dynamic (obligatory rights) aspects of the distribution of rights and obligations.
Upaya Meningkatkan Kemampuan Dasar Kognitif Anak Melalui Metode Proyek dengan Media Loose Parts
Authors: Adchani Alifah Mei , Rokhman Nissa Mawarda , Amini Mukti
Published: April 2023

Kemampuan kognitif sangat erat sekali kaitannya dengan berfikir, mengingat, dan memecahkan masalah. Pada penelitian yang dilakukan oleh peneliti di TK PKK Kartini Gayam Argosari Sedayu Bantul ini yakni dengan metode Penelitian Tindakan Kelas (PTK). Tujuan analisis ini adalah untuk melihat peningkatan kemampuan kognitif pengenalan huruf pada anak usia 4-6 tahun semester I tahun pelajaran 2022/2023. Penelitian ini dilakukan dengan perbaikan 2 siklus, pada setiap siklus terdiri dari 5 kali pertemuan dengan 5 RPPH. Perbaikan siklus terdiri dari perencanaan, pelaksanaan, observasi, dan refleksi. Subyek dalam penelitian yakni anak usia 4-6 tahun, terdiri dari 11 anak. Teknik pengumpulan data yang dipakai yakni observasi dengan memakai instrument observasi dan dokumentasi foto anak. Metode penelitian yang dipergunakan yakni metode penelitian deskriptif kuantitatif. Hasil perolehan dari penelitian tersebut meningkatkatnya hasil kemampuan kognitif anak ketika metode proyek dengan media loose parts diterapkan. Hasil yang diperoleh anak mengalami peningkatan pada setiap kategori perkembangan yang masing-masing skor rata-ratanya adalah 29,3 dengan permulaan pra siklus 14,83 dan pada siklus I 22. Peningkatan tersebut terjadi secara signifikan.
Hubungan Antara Kecerdasan Emosional dan Academic Burnout dengan Prestasi Belajar Siswa SMPN 2 Pakis Kabupaten Malang
Authors: Kirana Aulia Widya , Flurentin Elia , Setiyowati Arbin Janu
Published: April 2023

Abstract: The purpose of this study was to determine the relationship between emotional intelligence and academic burnout with learning achievement. This study used correlational research design. The total population of class VIII students of SMP Negeri 2 Pakis is 156 students, the sample is 112 students obtained by the slovin formula with a 5 percent allowance. Sampling using simple random sampling method. Data collection used the emotional intelligence scale adapted by Bantolo (2020), and the academic burnout scale "MBI-SS" adapted by Maharani (2017). Both have been tested for validity and reliability. Measurement of learning achievement used odd mid-term semester scores 2022/2023. The results of this study are that there is no significant relationship between emotional intelligence and academic burnout with learning achievement. The variables of emotional intelligence and academic burnout only contribute 2.8 percent to learning achievement. While the other 97.2 percent is influenced by other factors or variables that are not measured in this study.

Abstrak: Penelitian ini bertujuan untuk mencari tau hubungan antara kecerdasan emosional dan academic burnout dengan prestasi belajar siswa. Rancangan penelitian yang digunakan yaitu kuantitatif non-eksperimen, dengan desain deskriptif korelasional. Total populasi siswa kelas VIII SMP Negeri 2 Pakis sebanyak 156 siswa, dengan jumlah sampel 112 siswa yang didapatkan dengan rumus slovin tingkat kelonggaran 5 persen. Dalam penentuan sampel, digunakan metode simple random sampling. Pengumpulan data melalui skala kecerdasan emosional mengadaptasi milik Bantolo (2020), dan skala academic burnout “Maslach Burnout Inventory-Student Survey (MBI-SS)” yang diadaptasi dari Maharani (2017). Keduanya telah melalui uji validitas dan uji reliabilitas. Pengukuran prestasi belajar menggunakan nilai UTS semester gasal 2022/2023. Hasil dari penelitian ini yaitu tidak terdapatnya hubungan yang signifikan antara kecerdasan emosional dan academic burnout dengan prestasi belajar. Variabel kecerdasan emosional, dan academic burnout hanya berkontribusi sebesar 2,8 persen dengan prestasi belajar. Sedangkan 97,2 persen lainnya dipengaruhi oleh faktor atau variabel lain yang tidak diukur pada penelitian ini.
Pengembangan Modul Perencanaan Karier untuk Meningkatkan Keterampilan Pengambilan Keputusan Karier Siswa SMP
Authors: Wibowo Suci Murni Prastiwi , Santoso Djoko Budi , Apriani Rizka
Published: April 2023

Abstract: Research and development aims to produce a product out of a career planning module to enhance the middle-school career-making skills. Adapting the 5 steps of research and development of the Borg & Gall (1983) which covered (1) the stage of data collection; (2) research planning; (3) product design stage; (4) product trials; And (5) the product revision. The expert test consists of one materials expert, two media experts and two user candidates who are counselors. The analysis of the data results from the materials test uses the feasibility percentage formula, while the data of the media expert and the user test results use the inter-rater agremeent model formula. The results from a data analysis of materials collected by 90%. Validation from the media expert test scores by 1 as well as the user test scores by 1. The results of data analysis from the product testing process fall into very precise category, and thus the product that has been developed may be stated to meet the appropriate criteria for acceptance that include the four aspects of accuracy, usefulness, ease and attraction.

Abstrak: Penelitian dan pengembangan bertujuan menghasilkan produk berupa modul perencanaan karier untuk meningkatkan keterampilan pengambilan keputusan karier siswa SMP. Mengadaptasi 5 langkah penelitian dan pengembangan dari Borg & Gall (1983) yang meliputi (1) tahap pengumpulan data; (2) perencanaan penelitian; (3) tahap desain produk; (4) uji coba produk; dan (5) revisi produk.Uji ahli terdiri satu ahli materi, dua ahli media dan dua calon pengguna yang merupakan konselor. Analisis data hasil uji ahli materi menggunakan rumus presentase kelayakan, sedangkan data hasil uji ahli media dan uji calon pengguna menggunakan rumus inter-rater agremeent model. Dari hasil analisi data uji ahli materi diperoleh hasil sebesar 90%. Hasil validasi dari uji ahli media memperoleh skor sebesar 1 begitu pula dengan hasil uji calon pengguna memperoleh skor sebesar 1. Hasil analisis data dari proses uji coba produk tergolong dalam kategori sangat tepat, dengan demikian produk yang telah dikembangkan dapat dinyatakan sesuai dengan kriteria keberterimaan yang mencakup empat aspek yakni ketepatan, kegunaan, kemudahan dan kemenarikan.
Media Sosial Tiktok Sebagai Sumber Belajar Informal Bagi Orang Dewasa
Authors: Frizka Isdinah , Sopingi Sopingi , Listyaningrum Anggia
Published: April 2023

Abstract: TikTok is a learning resource that is currently being used by students because it provides a lot of information and knowledge that can be accessed easily. In relation to TikTok, it acts as a mass media that provides a place for informal learning. The aims of this study are: (1) to describe TikTok as an informal source of learning for adults, (2) to find out the process of learning informally for adults from social media TikTok. This study uses a qualitative approach to the type of phenomenological research. The data collection method used in this study was in-depth interviews. Data analysis techniques used data reduction, data display, and conclusion. Triangulation was carried out to explain the validity of the data using time triangulation. The results of the research obtained are that TikTok is considered a learning resource for students because TikTok is an effective learning resource. TikTok provides all the information and knowledge needed by students. The things students often learn are various, such as make-up content, history, learning media, self-development, cooking recipes, tricks and tips for correct writing, and life hacks. Informal learning processes carried out by students include self-directed learning (SDL), incidental learning and socialization.

Abstrak: TikTok merupakan sumber belajar yang sedang marak digunakan oleh mahasiswa karena TikTok memberikan banyak informasi dan pengetahuan yang dapat diakses dengan mudah. Pada kaitannya dengan TikTok bertindak sebagai media massa yang memberikan tempat pembelajaran informal. Tujuan dari penelitian ini adalah 1) Mendeskripsikan TikTok sebagai sumber belajar informal orang dewasa, 2) Untuk mengetahui proses belajar secara informal orang dewasa dari media sosial TikTok. Penelitian ini menggunakan pendekatan kualitatif dengan jenis penelitian fenomenologi. Metode pengumpulan data yang digunakan dalam penelitian ini adalah wawancara mendalam. Teknik analisis data yang digunakan reduksi data, display data, dan pengambilan kesimpulan. Triangulasi dilakukan untuk menjelaskan keabsahan data dengan menggunakan triangulasi waktu. Hasil dari penelitian yang diperoleh adalah TikTok dianggap sebagai sumber belajar bagi mahasiswa karena TikTok menyediakan segala informasi dan pengetahuan yang dibutuhkan oleh mahasiswa. Hal-hal yang sering dipelajari oleh mahasiswa beranekaragam seperti konten make up, sejarah, media pembelajaran, self development, resep masak, Trik dan Tips kepenulisan yang benar, dan life hack. Proses belajar informal yang dilakukan oleh mahasiswa meliputi pembelajaran secara self directed learning (SDL), Incidnetal learning and sosialization.