bluuebunny/crossref_metadata_2025 huggingface dataset:
Normal pre- and post-prandial bile acids and protein C values vary by age in harbor seal pups (Phoca vitulina richardsi) undergoing rehabilitation
Authors: Linnehan Barbara K. , Leedam Jenelle E. , Rosen David A. S. , Haulena Martin
Published: May 2023

OBJECTIVE

To establish normal values for pre- and post-prandial bile acids and protein C in Pacific harbor seal (Phoca vitulina richardsi) pups.

ANIMALS

45 harbor seals undergoing rehabilitation at the Vancouver Aquarium Marine Mammal Rescue Centre, 0 to 16 weeks, and deemed healthy aside from malnutrition or maternal separation.

PROCEDURES

Venous blood was collected from the intervertebral extradural sinus in fasted seals and again 2 hours after a fish meal.

RESULTS

The reference interval (90% CL, confidence limit) for pre-prandial (fasting) bile acids was 17.2 μmol/L to 25.4 μmol/L, post-prandial bile acids were 36.9 μmol/L to 46.4 μmol/L, and protein C was 72.3% to 85.4%, across ages. For comparison between developmental ages, pups were grouped into 3 age classes: < 14 days, 5 to 8 weeks, and 10 to 16 weeks. Age affected pre- and post-prandial bile acids; pups < 14 days had significantly higher pre-prandial bile acids (36.0 μmol/L ± 16.5 μmol/L; P < .0001) than other age groups and pups 5 to 8 weeks had significantly higher post-prandial bile acids (50.4 μmol/L ± 21.9 μmol/L; P < .001). Protein C was also affected by age, with seals < 14 days having significantly lower values (mean, 51.8% ± 16.7%; P < .0001).

CLINICAL RELEVANCE

This study established normal reference intervals for bile acids in harbor seal pups and offered a preliminary investigation into protein C in pinnipeds. The bile acid values from 0- to 16-week-old seal pups were well above established normal ranges for domestic species, highlighting the utility of age- and species-specific reference ranges. The values presented here and the differences across age classes will aid clinicians in accurately diagnosing hepatobiliary disease in harbor seal pups.
Prevalence of Hepatitis B in Random Bulgarian Blood Samples – A Single-Site Experience
Authors: Gotseva A. , Naseva E.
Published: May 2023

The worldwide distribution of the HBV infection has usually been estimated by the prevalence of hepatitis B surface antigen (HBsAg) among the general population. Total antibodies for hepatitis B core antigen (anti-HBc) are the most important diagnostic marker for proving prior exposure to HBV.

Aim

The aim of this study was to determine the prevalence of Hepatitis B virus (HBV) infection among Bulgarian population. Reliable epidemiologic data is needed to estimate the prevalence of Hepatitis B in order to determine the actual burden of the infection and to plan prevention and control measures.

Materials and methods

A total of 2140 serum samples were tested for major serological markers of HBV (HBsAg and anti-HBc) for a period of two years (2018-2019).

Results

We established an intermediate prevalence of HBsAg (5.1%) and high prevalence of anti-HBc (27%) among HBsAg negative individuals.

Conclusion

In conclusion, the prevalence of Hepatitis B is much higher among those born before the introduction of universal hepatitis B vaccination in Bulgaria (1992).
Cardiac Hamartomas: Report of Two Rare Primary Cardiac Tumors (Rhabdomyoma and Hamartoma of Mature Cardiomyocytes) with Review of the Literature
Authors: Metodiev D. , Gegova A. , Ruseva M. , Ganeva R. , Parvanov D. , Marinov R. , Georgiev D. , Staneva-Mitkova D. , Stamenov G.
Published: May 2023

The most common primary cardiac tumors are myxomas, while cardiac hamartomas are rare. Cardiac hamartomas may constitute manifestation of a genetic disorder such as tuberous sclerosis, or could be diagnosed independently as a solitary lesion. We present two rare cases of primary cardiac tumors detected via diagnostic imaging and subsequent histopathology examination. The first described case is that of a male preterm foetus with multiple rhabdomyomas in the heart, discovered during foetal echocardiography. The finding was later confirmed by autopsy, which also revealed presence of cortical tubers with typical balloon cells constituting well known epileptogenic lesions in the foetal brain. The second case describes an even rarer benign cardiac lesion – a hamartoma of mature cardiomyocytes – which was discovered by chance in a 49-year old female patient during echocardiography. The performed CT scan revealed a 37 x 16 x 12 mm tumor in the right atrium obstructing the superior vena cava inlet. The malformation was surgically removed and examined histologically revealing disorganized hypertrophic mature cardiomyocytes, partly separated by fibrous strands and admixed with mature adipocytes. Differential diagnosis was performed to rule out other benign tumors with myocyte differentiation – cardiac rhabdomyoma, histiocytoid cardiomyopathy and adult cellular rhabdomyoma.

Conclusion

The diagnosis of cardiac hamartomas was possible only after pathomorphological examination of material from the tumors. Reporting of rare neoplasms is crucial in order to determine their prevalence and to inform clinical practice.
Origanum majorana Essential Oil Ameliorated the Behavioral, Biochemical, Physiological and Performance Perturbations Induced by Aflatoxin B1 in Growing Rabbits
Authors: Farag Mayada R. , Gharib Heba S.A. , El-Naggar Karima , Hendam Basma M. , Ahmad Enas A.M. , Alagawany Mahmoud , El-Ghazali Hanaa M.
Published: May 2023

The current study assessed the benefits of marjoram essential oil (MEO) in reducing the aflatoxin B1 (AFB1) toxicity in growing rabbits. Forty-eight rabbits, aged 4 weeks, were randomly assigned to four groups (4 replications of 3 rabbits/replicate) as follows: BD group (control); AFB1 group (supplemented with AFB1 0.3 mg/kg diet); MEO-supplemented group (1 g MEO/kg diet); AFB1 + MEO group (AFB1 0.3 mg/kg diet + 1 g MEO/kg diet). AFB1 exposure resulted in reduction of rabbit growth and total protein and albumin content in serum; increased liver function related enzymes (ALP, ALT and AST); induced oxidative stress displayed by lower level of antioxidant enzymes (CAT and GSH), increased biomarkers of DNA and lipid oxidative damage with significant upregulation of the tumor suppressor protein interferon-γ, interleukin 1β, tumor necrosis factor-α and heat shock protein-70 when compared to the control (P<0.05). Moreover, exposure to AFB1 increased the bioaccumulation of AFB1 residues in rabbit liver. Supplementation of MEO in the AFB1-exposed rabbits alleviated all of its negative effects. In conclusion, dietary addition of 1 g MEO could effectively ameliorate the adverse impacts of AFB1 on rabbit growth; enhanced their antioxidants and reduced oxidative stress and inflammatory response indicators, as well as the AFB1 residues in liver.
Seasonal Variation and Clinical Manifestations of Hypertrophic Pyloric Stenosis: A Retrospective Study
Authors: Mihai Cristina Maria , Balasa Adriana Luminita , Mihai Larisia , Frecus Corina Elena , Litrin Radu Mihai , Andrusca Antonio , Chisnoiu Tatiana , Iorga Andra Maria
Published: May 2023

Hypertrophic pyloric stenosis (HPS) is a gastrointestinal condition that affects newborns and young infants and is characterized by progressive, non-bilious projectile vomiting. This study aimed to investigate the demographics and clinical manifestations of HPS. A retrospective, non-randomized study was conducted over a period of three years (2019-2022) and included 29 patients diagnosed with HPS at the Pediatric Clinic of the County Clinical Emergency Hospital of Constanta. The results showed a significant male predilection, with a ratio of 1:4.8, and a seasonal variation with a higher incidence of HPS in the summer months. The primary symptom of HPS was non-bilious forceful vomiting after feeding, observed in nearly all cases. Other symptoms included dehydration, stagnation and decrease in weight. The thickness of the pyloric muscle was measured using ultrasonography and was found to be an average of 54.5 mm, with a range between 30 mm and 79 mm, which is considered a strong indication of HPS. This study highlights the importance of considering HPS as a possible diagnosis in newborns and young infants presenting with symptoms of projectile vomiting, and emphasizes the need for further research into the seasonal variation of HPS and its underlying causes.
The Spectrum of Intoxication Among Adolescents
Authors: Iorga Andra Maria , Mihai Cristina Maria , Chisnoiu Tatiana , Mihai Larisia , Balasa Adriana Luminita , Frecus Corina , Elena Grosan , Nistor Ioana Livia , Nitescu Viorela Gabriela
Published: May 2023

Among adolescents, acute intoxications caused by drugs as well as intoxications caused by toxic substances make up an important chapter of emergency pediatric pathology.

We conducted a retrospective study carried out for a period of 1 year, 2021–2022, which included a number of 37 patients, admitted in the Pediatric Clinic of the County Clinical Hospital “Sfântul Apostol Andrei” Constanța.

Out of the total of admissions during a 12 months period, 0,5% consisted in acute intoxications in adolescents.

There is a higher tendency for substance intoxication in females (65,5% of total cases).

There is a higher tendency for adolescents with suicide ideation to use substances in order to end their life because of multiple risk factors, mental health disorders putting them at a higher risk to attempt suicide. Alcohol is widely used.
Failure Plane on Precast Block Retaining Wall
Authors: Mazni Deni Irda , Hakam Abdul , Tanjung Jafril , Ismail Febrin Anas , Yossyafra
Published: May 2023

Rankine's theory stated that the soil failure plane behind the monolith retaining wall is a linear equation and is applied similarly to the plane of precast block retaining walls. However, the actual failure plane in the field may differ from the theory. This research is done to determine the plane of soil failure behind a precast block retaining wall using wall modeling tests in the laboratory. Several stages for laboratory tests are carried out. Starting with making a precast block retaining wall with the planned dimensions, then a failure test is carried out by giving variations and adding loads in stages. The plane and pattern of failure from recorded laboratory tests. The failure shape is analyzed to obtain the mathematical equation. The shape of the failure obtained from the analysis is in the form of an S curve, with a power three polynomial function. Furthermore, the total area of the failure land is calculated. When compared with the results of the analysis using Rankine's theory equation, it is found that the area of the failure soil from the laboratory test of the precast block retaining wall is smaller, while the length of the failure of the soil is longer. The altitude simulation is continued based on the obtained mathematical model.
Mechanical Properties of High Strength Self Compacting Concrete Based on Rheological Mix Proportioning
Authors: Narayana Rao U. V. , Naga Satish Kumar Ch.
Published: May 2023

The main problem is to raise the standard of construction, rethinking concrete's expanding potential as a construction material. The scarcity of river sand as a fine aggregate ingredient is currently a widespread issue for many concrete plants. As a result, quarried stones that were accessible locally were used as fine aggregate. Crushed Rock Particles, also known as crushed sand, performs better in terms of fresh characteristics since there are more fines present in CRF than in river sand. The current study additionally examines the relationship between plastic viscosity and the fresh and hardened SCC properties. As a partial substitute for Ordinary Portland Cement, Fly Ash and Ground Granulated Blast Slag blends are used to generate binary and ternary. The experimental tests satisfactorily validate the suggested blend design. The results shown that SCC mixture with ternary blend, binary blend with GGBS, fly ash, and blend with pure OPC are suitable for creating fresh characteristics. Additionally, it was found that a cohesive and workable mix was produced when 100 % CRF was used in place of sand.
Urban Constructed Wetlands in Arid and Semiarid Zones
Authors: Lachinani Kordesofla Maryam , Abna Parisa
Published: May 2023

The development of societies and the increasing growth of recent constructions, especially in cities, have caused environmental issues, destruction, and reduction of natural resources and the environment, especially green and green-blue spaces. According to studies, in the past years, many parts of natural and even pristine surfaces and spaces in big cities have been turned into artificial, and impermeable spaces, which has aggravated environmental and ecological problems and also it has aggravated the aesthetic characteristics of the urban landscape, particularly in arid and semiarid areas. In this case, the studies show that identifying and applying natural ecosystems such as wetlands and their artificial types due to their multifunctional aspects and benefits, especially in urban areas, can be the basis for reducing many issues mentioned. Therefore, it is necessary to pay attention to this critical issue and do more research to know different types of constructed wetland ecosystems along with their services and values. The primary aim of this research is to identify the values and services of this ecosystem and to examine the diverse patterns of constructed wetlands in order to extract and design simple patterns of construcred wetlands. We want to know their role and position in landscape architecture and urban planning and design process. Also, this study aims to examine the potencial and possibillity of building constructed wetlands in urban areas particularly in arid areas and Mediterranean regions, according to Koppen climate classiffication. In this regard, the theoretical framework is provided based on the study of specialized texts and the study of similar foreign case studies and diverse patterns of urban wetlands with their different functions. These reviews have been done in a specific format consisting of some main aspects, such as the function and supply sources of wetlands. The final result and extractted simplified patterns, according to case studies, can be considered as a framework for designing and planning urban constructed wetlands and a guide for planning and designing a landscape consisting of this element, especially in areas with arid, semiarid, and Mediterranean climates with hot and dry summers.
Analytical Study of Buckling Restrained Braced Frames in Different Seismic Zone Using ETABS
Authors: Gottem Aparna Shiny , Lingeshwaran N. , Himath Kumar Y. , Mallika Chowdary Ch. , Pratheba S. , Perumal K.
Published: May 2023

Tall buildings have unique seismic challenges, particularly the P-delta effect. This can cause an increase in loads on certain parts of the structure, leading to potential instability or collapse. The solution is to use buckling restrained bracing (BRB) systems, which improve the lateral strength of the structure and control the P-delta effect. The present study aimed to determine the effectiveness of various brace configurations in reducing the seismic response of a 50-story reinforced concrete structure, with a focus on P-delta effects. To achieve this, linear dynamic analysis (response spectrum analysis) was conducted using E-TAB software. The selection of bracing configuration, however, depends upon the seismic zone. For this reason, five distinct configurations (X-pattern, inverted V, forward inclined, zig-zag, and bare frame) are considered for the analysis of buildings in different seismic zones. A building model was employed to study the behaviour of a structure with and without BRB to compare the parameters of storey drift, story displacement, diaphragm drift, story shear, story stiffness, and story acceleration using E-TAB software. Results showed that both Type-4 and Type-2 braces perform similarly in several aspects in seismic zones III and V. However, Type-2 braces perform slightly better in terms of storey stiffness-Y, with a lower difference of 39-40 % compared to Type-4 braces with a difference of 49 %.
Susceptibility of Fluvalinate and Esfenvalerate on Adult Tarek Alburnus tarichi (Güldenstädt 1814)
Authors: Kankaya Ertuğrul
Published: May 2023

Fluvalinate and esfenvalerate are pyrethroid insecticides and are used to control insect pests. These pesticides can enter the aquatic environment in different ways after use, causing toxicity. Tarek is a fish of the Cyprinidae family native to the Lake Van basin in Turkey. This study was conducted to determine the acute toxicity of fluvalinate and esfenvalerate to adult tarek. In the bioassays, tarek with an average length of 20.6±1.2 cm and an average weight of 93.9±14.0 g were used for fluvalinate, while an average length of 19.7±1.2 cm and an average weight of 85.5±16.6 g were used for esfenvalerate. Fish were exposed to fluvalinate using the semi-static test method, and esfenvalerate using the static test method. The toxicity tests were performed under the natural photoperiod. The concentrations used for fluvalinate were 0.15, 0.30, 0.45, 0.60 µg L−1, while for esfenvalerate they were 0.33, 0.67, 1.00, 1.34 µg L−1. The tests were performed at 13±1 °C for 96 hours with dechlorinated tap water. At the end of the toxicity tests, the mean lethal concentration (LC50) of fluvalinate after 96 hours was determined to be 0.338 (0.230-0.477) µg L−1 and the above concentration of esfenvalerate was determined to be 0.475 (0.293-0.640) µg L−1 for adult tarek. Tarek exposed to fluvalinate and esfenvalerate showed toxic effects throughout the test, such as splashing, vigorous and then slower swimming, loss of balance, increased respiratory rate and contraction. Consequently, fluvalinate and esfenvalerate were found to be highly toxic to tarek and therefore the concentration of fluvalinate should not exceed 0.003 µg L−1, and that of esfenvalerate should not exceed 0.005 µg L−1 in freshwater environments where tarek lives.
Investigating Impact of Sea Sand Mining in Tunda Island Waters, Indonesia Based in Mike 21 Modelling
Authors: Wahyudi Wawan , Martono Dwi Nowo , Utomo Suyud Warno , Sutjiningsih Dwita
Published: May 2023

In Indonesia, sea sand mining was introduced in the late 1970s, and one of the sites is Banten Province, Indonesia. Sea sand mining in Banten waters began in 2003 after the issuance of a permit by the Regent of Serang Regency, namely Decree No. 540/Kep.68/Huk/2003, which was updated by the Regional Regulation of Serang Regency No. 2 of 2013 on the Zoning Plan for Coastal and Small Island Areas in Serang Regency for 2013-2033. Studies related to marine sand mining in Banten, Indonesia are required in accordance with the principle of ecosystem sustainability. The objective of this study is to analyze the impact of sea sand mining on the ecological quality of coral reefs and hydro-oceanographic hue on Tunda Island. The survey method was used to determine the coral reef cover, while the hydrodynamic aspects were carried out by simulating bathymetric data, tidal and wave patterns. In addition, a simulation of sediment distribution was performed to determine the effects of sea sand mining using MIKE 12 sand transport module. The percentage of coral cover in the west, east and south of Tunda Island was 66.00%, 39.67% and 28.15%, respectively. The maximum sea depth around the study site reached 70 m, while it is relatively shallow in the mining area. In the last 14 years, the prevailing wave height ranged from 0.5-0.75 m or 49.02%, and 0.25-0.50 m or 36.69%. In addition, the concentration of TSS was relatively high, ranging from 40 mg/l to 60 mg/l. From the results, the most commonly observed impact of sea sand mining off Tunda Island was the high concentration of TSS. This can be prevented by rotating TSHD vessels, especially in the areas adjacent to Tunda Island.
An index to prevent major limb amputations in diabetic foot
Authors: Zengin Bugra , Yuzuguldu Burak , Simsir Ilgin Yildirim , Cetinkalp Sevki
Published: May 2023

Objective. Besides the early detection and treatment of diabetic foot ulcers, being aware of the risk factors for major amputation plays a crucial role in preventing the major lower limb amputations. Major lower limb amputations are not just mentally and physically hard for patients, but also have an effect on patient’s survival and are a financial burden on both patients and healthcare systems.

Subjects and Methods. We defined 37 potential risk factors for major amputation and these risk factors were investigated among 507 patients who had ulcers in their feet and were seen by the diabetic foot ulcer council at Ege University Faculty of Medicine. In our study, 106 (20.9%) patients ended up undergoing major lower limb amputation.

Results. The univariate analysis showed that 24 defined risk factors were statistically significant. In the multivariate analysis using the Cox regression model, 6 risk factors remained statistically significant. Multivariate-adjusted hazard ratios were 4.172 for hyperlipidemia, 3.747 for albumin <3.365 g/dL, 3.368 for C-reactive protein (CRP) >2.185 mg/L, 2.067 for presence of gangrenous Wagner stage, 1.931 for smoking tobacco >30 pack/year, and 1.790 for hematocrit (HCT) <31.5%. Most patients with major amputation presented with a neuroischemic foot (58%). Gender and age were not found to be risk factors for major amputation. Having less than 7% of hemoglobin A1c (HbA1c) levels had a direct proportion with major amputation numbers. The mortality rates in one year, two and three years after the major amputation operations were 24.6%, 30%, and 35.9%, respectively.

Conclusion. Being familiar with these risk factors for major amputation is crucial for multi-disciplinary teams to take good care of patients with diabetic foot ulcers and to lower the need for major amputations.
Problems Related to Selected Methods and Techniques of as-Built Surveys of Low- and Medium-Voltage Electricity Connectors with a Practical Discussion
Authors: Turek Magdalena , Buśko Małgorzata , Buda A. S. , Maciuk K.
Published: May 2023

The aim of the paper was to analyse problems related to the inventory (as-built survey) of low and medium voltage power lines. Measurement methods and techniques were analysed as well as the influence of the network type (low and medium voltage) on the as-built survey procedure. For this purpose, information obtained from five as-built survey reports of medium and low voltage using different measurement methods was also used. Three of them were sample as-built survey of low voltage cable lines measured by tacheometric method, one as-built survey of medium and low voltage lines measured by GNSS method and one of low voltage cable made by indirect method using cable locator and measured by GNSS technology. The paper analyses the differences arising from the accuracy of the measurement, the difficulties encountered during the implementation, the time-consuming nature of the work performed, taking into account safety aspects for the persons performing the work.
Managing soil organic matter through biochar application and varying levels of N fertilisation increases the rate of water-stable aggregates formation
Authors: Šimanský Vladimír , Wójcik-Gront Elżbieta , Buchkina Natalya , Horák Ján
Published: May 2023

The formation of soil aggregates, including water-stable aggregates, is linked to soil organic matter (SOM). Biochar (B) is carbon-rich, which, in addition to storing carbon in a stable form for many years, has important benefits for soils and plants, but the mechanisms of soil structure formation after B and mineral fertiliser application are not sufficiently studied. For this reason, the study aimed to answer the following questions: How (1) the rate of B and (2) varying levels of nitrogen fertiliser (N) being applied to the soil affect the dynamics of soil aggregation due to the increase in the content of soil organic carbon, labile carbon in the bulk soil and in the content of water-stable aggregates (WSA) size-fractions. In 2014–2021, in Dolná Malanta (experimental site of Slovak University of Agriculture on silty loam Haplic Luvisol) during the growing seasons, soil samples were collected from all the B (0, 10 and 20 t ha–1) and N (0, 1st and 2nd level of N fertilisation) treatments. The results have shown that the highest values of many variables were associated with B20 treatment for all the N fertilisation levels. B compared to N more significantly affected the content of almost all the size-fractions of WSA. In all the treatments, the content of WSAma >5 mm, 5–3 mm, 3–2 mm and 1–0.5 mm in size was increasing over time – a yearly increase from 0.31 to 2.14% for 8-years. Based on the changes in the SOM content, WSA were divided into 3 groups: 1) Water-stable microaggregates (WSAmi < 0.25 mm), 2) Smaller size-fractions of water-stable macroaggregates (WSAma 1–0.25 mm), and 3) Medium and large fractions of WSAma (WSAma ≥1 mm).
Effects of thermal and hydrophysical properties of sandy Haplic Podzol on actual evapotranspiration of spring wheat
Authors: Balashov Eugene V. , Dobrokhotov Aleksei V. , Kozyreva Lyudmila V.
Published: May 2023

The objectives of the research were to: (1) assess the strength of relationships between the soil thermal and hydrophysical properties, (2) evaluate the strength of association of evapotranspiration of spring wheat crop with soil thermal and hydrophysical properties, and (3) estimate the ranges of the thermal and hydrophysical properties of the sandy Haplic Podzol during the growing period of spring wheat in 2022. The study included instrumental simultaneous measurements of meteorological data, soil water retention curve, soil moisture content (SMC) and thermal properties. Actual evapotranspiration was calculated according to the Allen equation. Spearman’s rank correlation coefficients showed that the increase in SMC from 0.10 cm3 cm−3 to 0.26 cm3 cm−3 resulted in a significant increase in thermal conductivity (r = 0.81, p < 0.001), volumetric heat capacity (r = 0.93, p < 0.001) and thermal diffusivity (r = 0.94, p < 0.001). Actual evapotranspiration also rose with the increasing SMC (r = 0.91, p < 0.001) and matric water potentials (r = 0.61, p < 0.05). As a consequence of the changes in SMC, the Spearman’s rank correlation coefficients supported the strong positive relationships of actual evapotranspiration with volumetric heat capacity (r = 0.97, p < 0.001), thermal conductivity (r = 0.96, p < 0.001) and thermal diffusivity (r = 0.96, p < 0.001). Pearson correlation coefficients also supported the strong input of thermal inertia to the actual evapotranspiration (r = 0.88, p < 0.01). During the whole period of observations, actual evapotranspiration varied from 0.05 to 0.59 mm hr−1, soil thermal conductivity – from 0.225 to −1.056 W m−1 K−1, volumetric heat capacity – from 1.057 to 1.889 MJ m–3 K−1, heat diffusivity from 0.189 to 0.559 mm2 s−1, and thermal inertia – from 516 to 1412 J m−2 K−1 s−0.5.
Analysing the Effect of Body, Mind and Soul State on Subjective Well-Being During COVID-19 Pandemic
Authors: Budişan Roxana Dayana , Cosma Smaranda Adina , Chifu Ioan Cristian
Published: May 2023

The concern about health is continuously increasing and the COVID-19 pandemic has caused so many changes at a global level, affecting people, regardless demographic features. Different analysis show that people have been affected from different points of view, physically, mentally, and emotionally. The research is focusing on Romanians’ perceptions, believes and behaviours in respect with their body, mind and soul (BMS) condition. The paper evaluates the effect of the state of BMS on subjective well-being during the Covid-19 pandemic. It was conducted a descriptive research, using interviews based on an online anonymous questionnaire. The study reveals that when referring to their well-being, the majority are considering emotional and mind condition first. More hours spent in front of a screen and lack of socialization are the main effects of the pandemic. The respondents considered that their emotional state was impacted most in the last year. More then 60% became more aware of the importance of well-being. The majority of the respondents evaluated separately their physical, mental and emotional condition as being good, sustaining their state especially though walking, sleeping enough hours per night and socializing with others, and spending less then 100 euros per month for maintaining their subjective well-being.
Drivers of Digital Transformation and their Impact on Organizational Management
Authors: Mihu Cantemir , Pitic Antoniu Gabriel , Bayraktar Dorin
Published: May 2023

Digital transformation has become a critical topic for organizations that want to stay competitive in today’s digital age. The widespread use of digital technologies has brought significant changes to the way organizations exist, operate and interact with customers. They are going through a process of reshaping and reorganizing processes and operations, as well as rethinking and redefining the human role in the value creation process. However, digital technologies and their diffusion are not the only driver of digital transformation, as the success of such change initiatives depends on many other factors, the definition of which is crucial to the success of digital transformation. The objective of this paper is to explore the drivers of digital transformation and their impact on management. The work presents a comprehensive review of the literature on digital transformation, identifying the main drivers that influence the success of digital transformation initiatives. It also defines the impact of these drivers on the management of organizations, identifying how the role of the executive is being redefined in today’s digital age.
Sovereign ESG Integration: A Bibliometric and Systematic Literature Review
Authors: Pascoal Fabian Buddy , Juwana Hikmahanto , Karuniasa Mahawan , Djojokusumo Himawan Hariyoga
Published: May 2023

Investments with sustainable principles that fulfil environmental, social, and governance (ESG) that stress the notion of sovereignty, with varied financing needs and criteria and jurisdictional features, have just lately begun to emerge. We intend to investigate and debate the volume and scope of research performed in that environment. Using PRISMA framework, we obtained 37 articles from 2009 to 2021 related to sovereign aspects of ESG based sustainable investment from the Scopus database. We found that the issues discussed were dominated by Sovereign Wealth Funds (SWF), particularly from Norway, which has the world’s largest market value. We emphasize the need for research in developing countries that have SWFs as well as host countries, analyze sovereign investment in the climate-impacted sectors, formulate our own composite index as a common denominator, where the cross-border legal basis for SWF is strengthened.
Crecimiento Económico Regional en México, 1980-2020. ¿De vuelta a la Convergencia?
Authors: Fonseca-Hernández Felipe de Jesús , Félix-Armenta Jimmy
Published: May 2023

Objetivo: estudiar convergencia absoluta para los estados mexicanos entre 1980 y 2020. Metodología: se utilizan modelos de datos en panel con la técnica empleada por Barro (2012). Resultados: presencia débil de convergencia absoluta en todo el periodo con sigma divergencia procíclica. Limitaciones: los datos se deflactan con el índice de precio nacional lo cual puede ocasionar que las diferencias regionales no sean captadas. Conclusiones: los períodos de crecimiento de la economía amplifican la dispersión de los niveles de ingreso mientras que los períodos de contracción tienen el efecto contrario con marcados patrones de crecimiento regionales muy desiguales que han propiciado la consolidación de la frontera norte y del centro-norte y el estancamiento del sur.
Migración y seguridad hemisférica en las Américas
Authors: Sierra-Gutiérrez William Alfredo , Torrijos-Rivera Vicente
Published: May 2023

La protesta social es un derecho constitucional que garantiza la expresión de demandas sociales dentro del acuerdo democrático del país. Pero cuando el ejercicio de este derecho es desdibujado por manifestaciones violentas, genera nuevos fenómenos que afectan el ejercicio mismo de este derecho y amenazan la seguridad nacional. Este libro analiza este fenómeno desde múltiples perspectivas. El capítulo 1 lo estudia en el contexto internacional, en relación con el terrorismo global; el capítulo 2 lo aborda como un problema de acción colectiva y el comportamiento de las multitudes; el capítulo 3 analiza el impacto en la seguridad nacional de lo ocurrido en Colombia durante las recientes protestas sociales; el capítulo 4 estudia el fenómeno desde una dimensión psicopolítica; el capítulo 5 hace una revisión histórica de esta problemática, y el capítulo 6 brinda unas pautas para su análisis desde la teoría y la práctica de la política contenciosa. Con ello, este libro busca ofrecer herramientas de análisis y de atención a los desafíos que la movilización social violenta plantea con cada vez más fuerza a las democracias liberales en la actualidad.
Application of Machine Learning Algorithms in Studying Water Quality in the Red River System
Authors: Quoc Son Nguyen , Linh Nguyen Cam , Quynh Le Thi Phuong , Thu Le Phuong
Published: May 2023

The Red River system plays an important role in the socio-economic development of the Northern of Vietnam. Therefore, regular monitoring and evaluation of water quality parameters in the Red River system are important in water resources management and protection. However, current monitoring methods are often quite expensive and time-consuming. To predict the downstream water quality, this study uses multiple machine learning algorithms to understand the correlation between environmental parameters measured at upstream and downstream stations of the Red River system. The environmental parameters that are chosen for this study include suspended sediment concentration (SSC), inorganic nitrogen content (total N), phosphorus content (total P), and dissolved silicon (DSi). The results show that machine learning algorithms can estimate the downstream DSi and sediment concentrations based on combining values of three upstream stations with relatively high efficiency (R2 equals 0.75 and 0.66, respectively). Meanwhile, these algorithms have limited performance in estimating total N and P content, due to the influence of many exogenous factors. The study introduces a new direction for applying machine learning algorithms in water quality research in the Red River system with the potential application in other river systems in Vietnam.
Synthesis of Methyl Ester from Waste Cooking Oil Toward Application in Transformer’s Insulating Liquid
Authors: Dung Nguyen Van , Thi Nguyen Thi Xuan , Truong Le Vinh
Published: May 2023

This study evaluated the feasibility of using methyl ester prepared from waste cooking oil for electrical insulation in distribution transformers. Methyl ester is produced by a transesterification reaction between waste cooking oil and methanol using sodium hydroxide as a catalyst. The physicochemical parameters and breakdown voltage of the methyl ester were determined. The effects of ageing on breakdown voltage, viscosity and acid value of methyl ester were also investigated. In addition, the breakdown voltage of Kraft paper impregnated with methyl ester was determined. Experimental results showed that methyl ester from waste cooking oil had low viscosity (5.17 cSt) and high breakdown voltage (40.3 kV). Other parameters also meet ASTM D6871 except for the pour and flash points. Ageing insignificantly affected the breakdown voltage of the methyl ester. After ageing, the breakdown voltage of the methyl ester increased to 42.1 kV. However, the viscosity of the methyl ester also increased by 23.5% and the acid value increased by 79.2 times. Finally, the breakdown voltage of Kraft paper impregnated with the methyl ester was about 5-10% lower than that of paper impregnated with the mineral oil.
Ultra Wideband (UWB) Multiple Input and Multiple Output (MIMO) Antenna Design : A Review
Authors: Nursal Firdaus , Kurnia Rahmadi , Elfitri Ikhwana
Published: May 2023

Since the Federal Communication Commission (FCC) issued a license for the 3.1 – 10.6 GHz frequency spectrum for unlicensed radio applications, many papers have been published regarding ultrawideband (UWB) antenna design. The issue of UWB antenna design is determining how to create an antenna with a wide bandwidth, capable of rejecting communication systems that coexist with UWB bands, and capable of designing UWB antennas for multiple input multiple output (MIMO) communication system applications. This study examines the design of UWB antennas with monopole and slot types based on evaluations published over the last two decades. The discussion began with UWB and MIMO systems and then moved on to the configuration of monopole and slot UWB antennas. UWB antenna layout with notched bands and the several types of notched bands available. Finally, two port and quad-port MIMO antenna configuration is examined. To further understand UWB antenna design, numerous UWB antenna configurations are simulated. The outcomes of this review can be utilized as preliminary reading material for researchers looking into UWB antennas.
Analysis of Exhaust Gas Heat Utilization in Waste Heat Recovery Power Generator at Indarung V Factory PT Semen Padang
Authors: Safira Mayang , Latif Melda , Zaini Zaini , Aulia Aulia , Muharam Mumuh , Njeri Waweru
Published: May 2023

Increasing energy efficiency in the cement production process at PT Semen Padang is carried out by reusing exhaust gas to produce electricity using Waste heat recovery power generation (WHRPG) with a capacity of 8.5 MW. WHRPG is a technology for utilizing exhaust gas heat as a source of heat energy to heat feed water into steam by using a suspension preheater (SP) boiler and air quenching cooler (AQC) boiler. This study aims to calculate the power potential of the steam heat influenced by the steam temperature and the mass flow rate of the steam produced by the boiler, to calculate the efficiency of the boiler using the direct method by comparing the boiler output heat against the boiler input heat, to calculate the turbine efficiency based on the difference between the steam enthalpy enter the turbine against the steam enthalpy out of the turbine and the isotropic enthalpy of the steam out of the turbine and to calculate the power generated by WHRPG at PT Semen Padang. The results obtained in this study are the total potential power of steam heat is 19.778 MW, the boiler AQC efficiency is 70.30%, the boiler SP efficiency is 94.04% and the turbine efficiency is 78.64%. The electricity generated by PT Semen Padang's WHRPG is 3.70 MW.
Electric Load Modeling for Managing Electric Energy Consumption Through the PDCA Cycle in the Library Building of Andalas University
Authors: Budiman Refki , Nazir Refdinal
Published: May 2023

The need for electrical energy in the public building sector is quite dominant, reaching 33-40% of the total energy consumption of all sectors. To control electrical energy in buildings effectively, an Energy Management System (EMS) is needed. EMS stage consists of Plan-Do-Check-Act (PDCA). The study conducted in this research is on how to use the PDCA cycle method to model the consumption of electrical energy in campus buildings in a sustainable manner. Modeling of energy-efficient electrical loads is formed in several ways: modeling by replacing T8 fluorescent lamps and CFLs with LED, modeling by replacing non-inverter AC with inverter AC, modeling by the number of library visitors, modeling by improving the power factor, and finally, modeling with a combination of the four previous models. Modeling using LEDs results in savings of 1,464 kWh per month; inverter AC modeling saves 1742 kWh per month; modeling by adjusting the number of visitors saves 857 kWh per month; and modeling by improving the power factor saves 56 kWh per month. This electrical load modeling can save up to 8 kW of power outside of the library's operating hours. Meanwhile, during operational hours, the modeling library can save up to 30 kW of electric power
Kosmetik Rambut menurut Ibn Sina dalam Al-Qanun fi'l-Tibb II; Komponen Kimia dan aktivitasnya - Review
Authors: Dahlizar Sabrina , Novitri Suci Ahda , Betha Ofa Suzanthi , Kurniasih Putri , Suryani Nelly
Published: May 2023

Buku Al-Qanun Fi’l Tibb merupakan karya Ibnu Sina mengenai prinsip – prinsip pengobatan yang disusun dalam 5 jilid dan telah digunakan sebagai dasar –dasar pengobatan dan menjadi kurikulum dalam pendidikan kedokteran dan farmasi sampai abad ke 18.  Salah satu dari rangkaian buku tersebut yaitu jilid ke_2 disusun oleh Ibn Sina berupa materia medika yang menguraikan aktivitas dan khasiat, cara penggunaan, dan karakteristik serta deskripsi sebanyak 790 bahan obat tunggal berasal dari tanaman, hewan dan bahan alam lainnya. Penelitian ini bertujuan untuk mengeksplorasi komponen metabolit sekunder utama yang terkandung di dalam tanaman yang berdasarkan hasil pengujian Ibnu Sina memiliki aktivitas sebagai kosmetik rambut. Dari hasil penelitian didapatkan bahwa tanaman - tanaman tersebut mengandung komponen metabolit sekunder utama diantaranya terpen, asam fenolat, flavonoid, asam lemak, tanin, alkaloid, saponin, kuinon, dan feniletanoid glikosida. Tanaman dengan komponen utama berupa terpenoid berjumlah 9 tanaman, asam fenolat sebanyak 5 tanaman, flavonoid, asam lemak, alkaloid, dan tannin masing – masing 4 tanaman, senyawa kuinon saponin dan feniletanoid glikosida masing -masing sebanyak 1 tanaman.
Metode Analisis Gelatin Sapi dan Babi pada Kapsul Lunak menggunakan Kromatografi Cair Kinerja Tinggi dan Analisis Komponen Utama
Authors: Zilhadia Zilhadia , Bayyinah Bayyinah , Suzanti Betha Ofa
Published: May 2023

Penggunaan gelatin babi pada kapsul lunak menimbulkan kekhawatiran konsumen terkait status kehalalannya. Penelitian ini bertujuan untuk mengetahui perbedaan gelatin sapi dan babi yang digunakan pada kapsul lunak menggunakan High Performance Liquid Chromatography (HPLC) kombinasi  Principal Component Analysis (PCA) melalui data komposisi asam amino. Metode HPLC dilakukan dengan derivatisasi prakolom dan fase gerak sistem gradien menggunakan pelarut dapar asetat-fosfat dan acetonitrile. Persen tinggi puncak yang menunjukkan konsentrasi asam amino digunakan sebagai data yang diinput ke dalam software kemometrik dan menu yang dipilih adalah PCA. Hasil komposisi asam amino yang diolah dengan PCA menunjukkan bahwa gelatin babi memiliki nilai PC1 positif dan PC2 negatif sedangkan gelatin sapi memiliki nilai PC1 dan PC2 positif. Kapsul lunak gelatin babi memiliki nilai PC1 negatif dan PC2 positif sedangkan kapsul lunak gelatin sapi memiliki nilai PC1 dan PC2 negatif. Dapat disimpulkan bahwa gelatin babi dan sapi serta kapsul lunak yang terbuat dari gelatin babi dan sapi dapat dibedakan berdasarkan perbedaan profil asam amino. Namun penelitian ini belum dapat mengklasifikasikan gelatin yang ada pada kapsul lunak yang ada di pasaran.
Penggunaan Herbal berbasis Kearifan Lokal dalam Pengobatan Penyakit Influenza pada Anak di Provinsi Bali
Authors: Putri Dhiancinantyan Windydaca Brata , Apsari Dewi Puspita
Published: May 2023

Anak-anak merupakan kelompok yang paling rentan mengalami penyakit influenza akan tetapi antivirus dan vaksin yang ada masih terbatas efektivitasnya. Kecamatan Kintamani merupakan daerah perbukitan dengan tanaman obat yang tumbuh subur dan terbatasnya akses menuju fasilitas pelayanan kesehatan. Oleh karena itu tanaman obat memegang peranan penting dalam pengobatan penyakit influenza pada anak. Penelitian ini bertujuan  menginvestigasi tanaman obat yang digunakan masyarakat di Bali dalam mengatasi gejala influenza pada anak. Data pada penelitian kualitatif ini dikumpulkan melalui teknik wawancara dan observasi. Wawancara dilakukan pada pada dukun (balian usada), pedagang tradisional (ceraken) serta masyarakat. Penelitian ini dilakukan pada 37 narasumber yang tersebar di 6 Desa. Hasil penelitian menunjukkan terdapat 36 tanaman obat yang berasal dari 21 famili berpotensi mengatasi penyakit influenza pada anak. Famili tanaman obat yang paling banyak digunakan adalah Zingiberaceae dan daun merupakan bagian tanaman yang paling banyak digunakan dengan angka 35,14%. Metode pengolahan tanaman obat yang paling sering dilakukan adalah dengan dikunyah (37,84%) selanjutnya digunakan secara topikal. Demam merupakan gejala penyakit yang sering diobati dengan 11 jenis pilihan tanaman obat. Hasil penelitian ini menunjukkan masyarakat di kecamatan Kintamani masih menggunakan tanaman obat untuk mengatasi gejala penyakit influenza pada anak
Pengaruh Variasi Suhu dan Lama Waktu Penyimpanan terhadap Karakteristik Fisikokimia Kolagen Kulit Ikan Gabus (Channa striata Bloch)
Authors: Nofita Rahmi , Agustin Rini , Fajrin Mutiara Izmu
Published: May 2023

Kebutuhan kolagen sebagai bahan baku untuk industri farmasi dan kosmetika pada saat ini sangat tinggi. Hambatan dalam proses produksi kolagen, proses pembuatan sediaan yang mengandung kolagen, dan pada waktu penyimpanan bahan baku serta sediaan yang mengandung kolagen adalah stabilitas kolagen. Kolagen sangat rentan terhadap pengaruh perubahan suhu, diatas suhu ±40°C kolagen akan berubah menjadi gelatin, dimana struktur triple helix kolagen rusak menjadi rantai lurus, sehingga menyebabkan penurunan kualitas, perubahan susunan gugus fungsi, intensitas serapan, viskositas, perubahan suhu transisi kaca, bahkan perubahan suhu denaturasi. Penelitian ini bertujuan untuk mengetahui pengaruh variasi suhu dan lama penyimpanan terhadap karakteristik fisikokimia kolagen kulit ikan gabus. Kolagen disimpan dan diamati sebagai serbuk dan dispersi pada kelembaban relatif 80% pada suhu 5, 26 dan 40°C selama 60 hari penyimpanan. Untuk serbuk kolagen, terdapat penurunan suhu transisi gelas dengan suhu terendah setelah penyimpanan adalah 55,05°C. Karakterisasi gugus fungsi serbuk kolagen menunjukkan perubahan hipsokromik pada bilangan gelombang gugus amida A seiring dengan peningkatan suhu penyimpanan. Pada dispersi kolagen, intensitas serapan UV tampak hiperkromik pada panjang gelombang ± 230 nm. Viskositas dispersi kolagen juga menurun seiring dengan peningkatan suhu dan waktu penyimpanan, serta terdapat penurunan suhu denaturasi dispersi kolagen menjadi 28,3°C. Selama penyimpanan, semakin tinggi suhu maka kualitas fisikokimia kolagen semakin rendah. Dari sini dapat disimpulkan bahwa serbuk kolagen disimpan secara optimal pada suhu 5, 26 dan 40°C, sedangkan dispersi kolagen pada suhu 5 dan 26°C.
Intestinal Adhesions and the Use of Dressings and Bio- Resorbable Membranes as Prevention and Treatment
Authors: O. Rodrigues Sarah de , O. Rodrigues Rebecca de , O. Rodrigues Thiago de , P. Pagnossa Jorge
Published: May 2023

Abstract After surgery, intra-abdominal intestinal adhesions present a big problem that is not solved yet. The formation of adhesions begins at the moment when the discontinuity of the peritoneal integrity occurs and the endocrine metabolic response is initiated at a cellular level to repair the defect caused in the peritoneum's surface. However, preventing adhesions from forming in the abdominal portion is considered to be a correlation, from the moment of the execution of the techniques to the total recovery of the patient. Containment measures and the best healing of the tissue can be applied, such as; the use of bio-resorbable membranes and specific dressings emphasized in this analysis. Ensuring stability and a lower probability of the development of the tissular adhesion.