bluuebunny/crossref_metadata_2025 huggingface dataset:
Hematological Profile of Iron Overload in Rats Administered with Fruit Extract of Mahkota Dewa (Phaleria macrocarpa)
Authors: Verna Fransisca Dela , Ari Estuningtyas
Published: October 2022

Background: Repeated blood transfusions lead to an accumulation of iron that exceeds the body's iron storage capacity. Free iron is able to catalyze the formation of hydroxyl radicals that cause oxidative damage and cell death. The use of iron chelating medicines for iron chelation therapy is limited by side effects. Mangiferin is a natural bioactive compound with iron chelating and antioxidant activity. Mahkota dewa is a plant native to Indonesia that contains mangiferin. Objectives: The aim of this study was to evaluate the effect of mahkota dewa fruit extract administration on hematological profile of iron overload rats. Material and Methods: Thirty rats were divided into 6 groups: normal rats (N), iron overload rats (IO), iron overload rats rats given deferiprone (D), mangiferin (M), Mahkota dewa fruit extract at a dose of 100 mg/kg BW (PM1), or 200 mg/kg BW (PM2). Rats were given injection of iron sucrose 15 mg every 3-4 days for 8 weeks. At week 8, rats were sacrificed. Hematological analysis was performed in this study. Results: Iron overload condition caused by iron sucrose injection did not cause statistically significant changes in the haematological profile. Likewise, the administration mahkota dewa fruit extract at a dose of 100 or 200 mg/kg BW did not cause changes in the hematological profile. Conclusions: The administration of mahkota dewa fruit extract did not alter hematological profile of iron oveload rats.
SENSIBLE: Sequestered and Synergistic Blockchain Ecosystem
Authors: Kshirsagar Meghana , Vaidya Gauri Vaidya , Yao Yao , Kasar Smita , Conor Ryan
Published: October 2022

Healthcare interoperability unfolds the way for personalized healthcare
services at a reduced cost. Furthermore, a decentralized system holds
the promise to prevent compromises such as cyber-attacks due to data
breaches. Hence, there is a need for a framework that seamlessly
integrates and shares data across the system stakeholders. We
propose SENSIBLE, a blockchain-powered, knowledge-driven data-sharing
framework that gives patients complete control of their medical history
and can extract rich information hidden in it using knowledge graphs
(KGs). By incorporating both blockchain and KGs, we can provide a
platform for secure data sharing amongst stakeholders by
maintaining data privacy and integrity through data authentication
and robust data integration. We present a Proof-of-Concept of the
SENSIBLE network with Ethereum to share dynamic knowledge across
stakeholders. Dynamic knowledge generation on the blockchain provides a
two-fold advantage of cooperation and communication amongst the
stakeholders in the healthcare ecosystem. This leads to operational
ease through sharing relevant portions of complex information while also
ensuring the isolation of sensitive medical data.
Research on the effects of local throttling on thermal-induced two-phase flow instabilities in the typical coolant open-channel system in the nuclear reactor core
Authors: Long Jianping , Yang Bao-Wen , Zhang Bin , Wang Sipeng
Published: October 2022

Thermal-induced two-phase flow instabilities could badly slow the runtime performance of two-phase systems, such as boiling water reactor core, and even endanger the safe operation. Hence, many researchers have carried out numerous researches on flow instability characteristics, but few publications cover the effects of local throttling on two-phase flow instabilities in open-channel systems such as coolant rod bundle subchannel with spacer grids in the nuclear reactor core. This paper provides a numerical study on the effects of local throttling on two-phase flow instabilities in a simplified typical coolant open-channel system in a nuclear reactor core by using the NUSOL-SYS code. The effects of local throttling ratio, throttling position, and other throttling parameters on the stability of the boiling channel system were carried out. The results show that usually in uniformly distributed throttling conditions, the stability of the system and high throttling ratio are positively correlated. In fixed throttle ratio conditions, the stability of the system is positively correlated with the distance from the throttling region to the entrance and local void fraction. If throttling regions are uniformly arranged along the heating channel with a certain value, the number of throttle regions will enhance the instability of the system. Besides, this paper preliminarily proposed a criterion function f(n, RT, ?) to study the complicated throttling effects on flow instability which could provide technical reference for the safe design and operation of two-phase systems, especially, the reactor core.
Energy-saving and emission reduction system of data center heat pipe based on latent heat of water evaporation
Authors: Zhao Jinhui , Wang Panle , Li Jingshun , Gu Tianwei , Lu Jiaxu
Published: October 2022

To address the current problem of high energy consumption in data centers,
this paper proposes a data center heat pipe air-conditioning system based on
the latent heat of water evaporation, which uses the latent heat of water
evaporation for cooling by creating a low pressure environment to evaporate
large amounts of water. In order to verify the effect of the system, a heat
pipe test bench based on the latent heat of water evaporation was designed
and built. Compared with the traditional heat pipe in the data center for
heat dissipation, the performance and economy of the water evaporation
latent heat pipe system designed in this paper are analyzed experimentally.
A multi-physics coupled model of water evaporation latent heat pipe
air-conditioning based on COMSOL Multiphysics was established to simulate
and study the temperature field and velocity field distribution of water
evaporation latent heat pipe air-conditioning system in data centers. The
research shows that: - Under the designed test conditions, compared with
the traditional heat pipe system, the water evaporation latent heat pipe air
conditioner can conduct 2540 kJ more heat in one day in an outdoor
environment of 24?C. - At an ambient temperature of 35?C and an indoor
temperature of 25.8 ?C, the cooling capacity of the heat pipe in the data
center water evaporation latent heat pipe air-conditioning system is twice
the cooling capacity of the air conditioner, and the heat pipe can work
efficiently regardless of the outdoor ambient temperature. - The
energy-saving effect of the latent heat pipe of water evaporation in the
data center has a significant effect on air conditioners with an energy
efficiency rating (EER) lower than 2.5-4.4. It can improve the energy
efficiency of level 5 with an EER of 2.5 to level 2 with an EER of 3.22,
greatly reducing the power consumption of the data center air-conditioning
system. When the EER of the air conditioner exceeds 4.4, the coefficient of
performance of the data center water evaporation latent heat pipe
air-conditioning system will be lower than that of the air conditioner
itself.
Long-Term Outcomes with Islet-Alone and Islet-after-Kidney Transplantation for Type 1 Diabetes in the Clinical Islet Transplantation Consortium: the CIT08 Study
Authors: Rickels Michael R. , Eggerman Thomas L. , Bayman Levent , Qidwai Julie C. , Alejandro Rodolfo , Bridges Nancy D. , Hering Bernhard J. , Markmann James F. , Senior Peter A. , Hunsicker Lawrence G. , Consortium the Clinical Islet Transplantation
Published: October 2022

  

OBJECTIVE 

To determine long-term outcomes for islet-alone and islet-after-kidney transplantation in adults with type 1 diabetes complicated by impaired awareness of hypoglycemia. 

RESEARCH DESIGN AND METHODS

Prospective interventional and observational cohort study of islet-alone (n =48) and islet-after-kidney (n =24) transplant recipients followed for up to 8-years after intraportal infusion of one or more Purified Human Pancreatic Islet products under standardized immunosuppression. Outcomes included duration of islet graft survival (stimulated C-peptide ≥0.3 ng/mL), on-target glycemic control (HbA1c <7.0%), freedom from severe hypoglycemia, and insulin-independence. 

RESULTS 

Of the 48 islet-alone and 24 islet-after-kidney recipients, 26 and 8 completed long-term follow-up with islet graft function, 15 and 7 withdrew from follow-up with islet graft function, and 7 and 9 experienced islet graft failure, respectively. Actuarial islet graft survival at median and final follow-up was 84 and 56% for islet-alone and 69 and 49% for islet-after-kidney (P =0.007) with 77 and 49% of islet-alone and 57 and 35% of islet-after-kidney recipients maintaining post-transplant HbA1c <7.0% (P =0.0017); freedom from severe hypoglycemia was maintained at >90% in both cohorts. Insulin-independence was achieved by 74% of islet-alone and islet-after-kidney recipients with more than half maintaining insulin-independence during long-term follow-up. Kidney function remained stable during long-term follow-up in both cohorts and rates of sensitization against human leukocyte antigens were low. Severe adverse events occurred at 0.31 per patient-year for islet-alone and 0.43 per patient-year for islet-after-kidney.

CONCLUSIONS

Islet transplantation results in durable islet graft survival permitting achievement of glycemic targets in the absence of severe hypoglycemia for most appropriately indicated recipients having impaired awareness of hypoglycemia with acceptable safety of added immunosuppression for both islet-alone and islet-after-kidney transplantation.
Pre-diabetes is associated with increased risk of heart failure among patients with atrial fibrillation
Authors: Huang Jia-Yi , Tse Yi-Kei , Li Hang-Long , Chen Cong , Zhao Chun-Ting , Liu Ming-Ya , Wu Mei-Zhen , Ren Qing-Wen , Yu Si-Yeung , Hung Denise , Li Xin-Li , Tse Hung-Fat , Lip Gregory Y.H. , Yiu Kai-Hang
Published: October 2022

  

Abstract

Objective: To evaluate the association between pre-diabetes and HF and the association of HF with changes in glycaemic status. 

Design and Methods: Patients newly diagnosed with AF between 2015 and 2018 were divided into 3 groups (normoglycaemia, pre-diabetes, and type 2 diabetes) according to their baseline glycaemic status. The primary outcome was incident HF. Fine and Gray model was applied, with death defined as the competing event. 

Results: Among 17,943 AF patients (mean age 75.5 years, 47% female), 3,711 (20.7%) had pre-diabetes and 10,127 (56.4%) had diabetes at baseline. Over a median follow-up of 4.7 years, 518 (14%) normoglycaemic, 646 (15.7%) pre-diabetic, and 1,795 (17.7%) diabetic patients developed HF. Pre-diabetes was associated with an increased risk of HF compared with normoglycaemic patients (subdistribution Hazard Ratio (SHR) =1.12, 95% confidence interval (CI): 1.03-1.22). In patients with pre-diabetes at baseline, 403 (11.1%) progressed to diabetes and 311 (8.6%) reversed to normoglycaemia at 2 years. Compared to those who remained pre-diabetic, patients who progressed to diabetes were associated with an increased risk of HF (SHR=1.50, 95% CI: 1.13-1.97), whereas those who reversed to normoglycaemia were associated with decreased risk (SHR=0.61, 95% CI: 0.42-0.94). 

Conclusions: Pre-diabetes was associated with an increased risk of HF in patients with AF. Compared with patients who remained pre-diabetic, those who progressed to diabetes at 2 years experienced an increased risk of HF, whereas those who reversed to normoglycaemia incurred a lower risk of HF. 
Early-onset type 2 diabetes and mood, anxiety, and stress-related disorders: a genetically informative register-based cohort study
Authors: Liu Shengxin , Leone Marica , Ludvigsson Jonas F. , Lichtenstein Paul , Gudbjörnsdottir Soffia , Landén Mikael , Bergen Sarah E. , Taylor Mark J. , Larsson Henrik , Kuja-Halkola Ralf , Butwicka Agnieszka
Published: October 2022

  

Objective

To assess the association and familial co-aggregation between early-onset type 2 diabetes (diagnosed before age 45) and mood, anxiety, and stress-related disorders, and estimate the contribution of genetic and environmental factors to their co-occurrence. 

Research Design and Methods

This population-based cohort study included individuals born in Sweden 1968-1998, from whom pairs of full-siblings, half-siblings, and cousins were identified. Diagnoses of early-onset type 2 diabetes and mood (including unipolar depression and bipolar disorder), anxiety, and stress-related disorders were obtained from the National Patient Register. Logistic and Cox regression models were used to assess the phenotypic association and familial co-aggregation between type 2 diabetes and psychiatric disorders. Quantitative genetic modeling was conducted in full- and maternal half-sibling pairs to estimate the relative contributions of genetic and environmental factors to the association. 

Results

Among a total of 3,061,192 individuals, 7,896(0.3%) were diagnosed with early-onset type 2 diabetes. These individuals showed higher risks of any diagnosis (Odds Ratio [OR][95%CI]: 3.62[3.44,3.80]) and specific diagnosis of unipolar depression (3.97[3.75,4.22]), bipolar disorder (4.17[3.68,4.73]), anxiety (3.76[3.54,3.99]) and stress-related disorders (3.35[3.11,3.61]). Relatives of individuals with early-onset type 2 diabetes also had higher overall risks of the examined psychiatric disorders (ORs:1.03-1.57). These associations are largely explained by genetic factors (51%-78%), with the rest explained by non-shared environmental factors. 

Conclusion

Our findings highlight the burden of mood, anxiety, and stress-related disorders in early-onset type 2 diabetes and demonstrate that shared familial liability may contribute to their co-occurrence, suggesting that future research should aim to identify shared risk factors and ultimately refine preventive and intervention strategies.  
Cronkhite-Canada Syndrome Mimicking COVID-19-related Symptoms
Authors: Miyawaki Kayo , Komori Takaya , Ishida Yoshihiro , Sakaguchi Yuri , Honjo Hajime , Kudo Masatoshi , Otsuka Atsushi
Published: October 2022

Abstract is missing (Short communication)
Dentin Discoloration and Pulpal Ion Concentrations Following Silver Diamine Fluoride and Potassium Iodide Treatment
Authors: Luong M , Sadr A , Chan DCN
Published: October 2022

Objective

The objective of this in vitro study was to evaluate the effects of potassium iodide on dentin discoloration and ion penetration into the pulp chamber after application of silver diamine fluoride (SDF).

Methods

Proximal surfaces of extracted one-rooted sound human teeth were polished to obtain flat dentin and treated with 17% EDTA for two minutes. Each tooth was then fixed to a test tube. The specimens were distributed into five groups according to the treatment: SDF (Advantage Arrest, Elevate Oral Care); SDF-KI (SSKI, Upsher-Smith); RV-SDF (Riva Star, SDI); and RV-SDFKI. The CIE L*a*b* color value for each proximal dentin was assessed using a colorimeter (CR200, Konica-Minolta) at baseline, after two minutes, 10 minutes, and 24 hours, and ΔE compared to baseline was calculated. Subsequently, the water-filled tube was inverted to collect the ions that had penetrated from the tooth surface into the pulp chamber. Silver, iodide, and fluoride in the pulp were measured using trace element analysis (ISMat) and fluoride ion-selective electrode (Orion, Thermo Scientific) at days 1, 2, 7, and 14.

Results

Dentin in both SDF-KI groups showed no visual change in color whereas the groups using only SDF exhibited gradual staining. The time, the treatment and their interaction had a significant effect on ΔE (p<0.001). The fluoride concentrations at day 1 and day 14 for group SDF and KI were significantly lower compared to SDF (p=0.044). There was a difference between control groups and other groups in silver and iodine (p<0.05), whereas there was no significant difference among groups with treatment after 14 days (p>0.05).

Conclusion

The application of KI after SDF treatment could significantly reduce the dentin staining. The pulpal fluoride concentration in the groups using SDF-KI was lower compared to the ones using SDF only, whereas there was no difference observed in iodide and silver among the groups with treatment.
Resistance of Single-shade Composites to Discoloration
Authors: Ersöz B , Karaoğlanoğlu S , Oktay EA , Aydin N
Published: October 2022

The aim of this study was to examine the color change of single-shade resin composites, which can be used for all tooth shades. In this study, samples were prepared using resin composites with single-shade (Omnichroma, Vitra Unique) and multishade composite systems (G-aenial A’Chord, Clearfil Majesty ES-2 Premium). The initial color values were measured with a spectrophotometer. Then, samples were kept in wine, coffee, black tea, and distilled water and color measurements were made after days 1, 7, and 30. Color change (ΔE00) and whiteness index (WID) values were statistically analyzed using a one-way analysis of variance (ANOVA) test (α=0.05). Single-shade resin composites showed more color change from wine, coffee, and black tea than multishade resin composites (p<0.001). Single-shade composites have a greater discoloration potential. Single-shade resin composites may show more color change from beverages than multishade resin composites, which may negatively affect clinical success.
In-situ x-ray phase contrast observation of the full penetration spot welding on limited aluminum material thickness
Authors: Chung Woo-Sik , Häusler André , Hummel Marc , Olowinsky Alexander , Gillner Arnold , Beckmann Felix , Moosmann Julian
Published: October 2022

The laser-spot welding process of aluminum alloy 1050A with a limited thickness is observed with the x-ray phase contrast method to investigate the melt dynamic especially when the melt penetrates the material. The laser-spot welding is investigated with two different wavelengths of the laser beam source: 515 and 1030 nm to investigate the influence of the absorptivity. The melt progressively penetrates the material during the spot-welding process until reaching the bottom side of the material and when the melt penetrates the lower side of the material, the so-called “lens-like” melt appears at the lower side due to the surface tension. At a comparable beam intensity value, the oscillation of the “lens-like” melt at the lower side of the material is driven by the expansion of vapor capillary. This expansion occurs inside of the material and directly above the “lens-like” melt. The shape of the expanded vapor determines the volume as well as the geometry of the resulting melt volume. Furthermore, the transition from the heat conduction welding mode to the keyhole welding mode is investigated by defocusing the laser beam for the beam source with a 515 nm wavelength. At a given variation, a clear difference between either mode is observed with the x-ray phase contrast method.
Who belongs to a learned society? A report on the findings of the membership survey among learned societies
Authors: Late Elina , Pölönen Janne , Pylvänäinen Elina
Published: October 2022

In 2022, the Federation of Finnish Learned Societies worked on a report on the membership of learned societies. The objective of the report was to collect information on the membership of Finnish and international learned societies and practices in terms of reading scientific journals. The material for the report was collected through a questionnaire named ‘Who belongs to a learned society’, which was sent to the members of learned societies and researchers working in Finland.
DIRECT SOLUTION OF POLYNOMIAL REGRESSION OF ORDER UP TO 3
Authors:   Lviv Polytechnic National University, Dorozhovets Mykhailo
Published: October 2022

This article presents results related to the direct solution of the polynomial regression parameters based on the analytical solving of regression equations. The analytical solution is based on the normalization of the values of independent quantity with equidistance steps. The proposed solution does not need to directly solve a system of polynomial regression equations. The direct expressions to calculate estimators of regression coefficients, their standard deviations, and also standard and expanded deviation of polynomial functions are given. For a given number of measurement points, the parameters of these expressions have the same values independently of the range of input quantity. The proposed solution is illustrated by a numerical example used from a literature source.
Связь гендерной идентичности и нарциссизма
Authors: Волобуев Вахтанг В. , Рядинская Евгения Н.
Published: October 2022

Статья посвящена изучению проблемы нарциссизма и его связи с гендерной идентичностью. Во Введении обосновывается актуальность исследования связи гендерной принадлежности и проявлений нарциссизма, дается теоретический обзор подходов к определению понятия нарциссизма. Новизна исследования заключается в получении сведений относительно связи гендерной идентичности с конструктивным и деструктивным нарциссизмом. В разделе «Методы» дается описание методов исследования связи гендерной идентичности и нарциссизма. По Результатам эмпирического исследования выявлен преобладающий средний уровень нарциссизма и андрогинный тип гендерной идентичности. Статистический расчет позволил доказать связь между данными параметрами, и дать качественный анализ изучаемым явлениям. Определено, что испытуемые с маскулинным типом гендерной идентичности, обладая ярко выраженными мужскими качествами, проявляют некоторую черствость в отношениях, так как не характеризуются высокой степенью эмпатии. Для маскулинов-нарциссов характерно проявлять дерзость и заносчивость в поведении, они обладают высоким чувством значимости. При этом выявлено, что, чем меньше выражена маскулинность, тем больше проявляется деффицитарный нарциссизм, о чем свидетельствует обнаружение связанной с ним обратной корреляционной связи. Данная категория респондентов не способна отстаивать собственные интересы, характеризуется низкой самооценкой, чувством собственной незначительности, неуверенности в себе, довольствуется лишь ролью пассивного реципиента (принимающего). Доказано, что андрогины более склонны к проявлению конструктивного нарциссизма, признанию собственной ценности, реалистическому принятию себя. Такую связь можно объяснить гармоничной интеграцией маскулинных и фемининных черт, повышающих адаптивные способности андрогинов. Отмечено, что они склонны к манипуляциям, проявляя устойчивость в социальных контактах и отсутствие резко выраженных доминантно-агрессивных тенденций в общении, что позволяет им более грамотно достигать поставленных целей, и, как следствие, сохранять уверенность в себе. В разделе «Обсуждение результатов» дается интерпретация полученных результатов о связи андрогинного типа гендерной идентичности с нарциссизмом, в частности, с конструктивным нарциссизмом, и маскулинного гендера с деффицитарным.
Karakteristik Struktur Mikro, Struktur Fasa dan Sifat Fisis Komposit Silika Sekam Padi dengan Aspal
Authors:   Universitas Lampung, Safitri Devi Ika , Sembiring Simon , Rumiyanti Leni
Published: October 2022

Synthesis and characterization silica of rice husks and asphalt composites have been carried out with a ratio of 65%: 35%; 70%: 30% and 75%: 25%. Silica synthesis from rice husk was carried out using the sol-gel method. The materials used in this research are rice husks, asphalt, aquades, gasoline, NaOH and HNO3. The purpose of this study was to determine the effect of silica and asphalt mass variations on the characteristics of microstructure, phase structure and physical properties namely density and porosity. Based on the research that has been done, it can be concluded that the results of SEM analysis show the formation of wad and cracks on the surface of the sample with an average grain size of 3,236 µm, 3,728 µm and 2,924 µm. In the EDS analysis results it can be seen that the elemental content contained in the samples is silica, oxygen, carbon, sulfur, sodium and aluminum. Where are the elements that dominate are the elements of silica, oxygen and carbon. Then based on XRD characterization results it is known that the sample has structure amorphous silica and amorphous carbon . The amorphous silica structure experiencing a shift 2θ with the highest peak intensity, from 2θ = 21˚ to 2θ = 22˚. Furthermore, the physical properties test of density 2.402 g / cm3, 2.692 g / cm3 and 2.852 g / cm3. In the physical properties test the porosity obtained was 9,825%, 8,028% and 6,835%.
Karakterisasi Sifat Kekuatan Tarik Komposit Laminat Partikel Cangkang Kerang Simping/E-Glass Menggunakan Matriks Poliester
Authors:   Jurusan Fisika, Universitas Islam Negeri Maulana Malik Ibrahim Malang, Indonesia, Kusairi Kusairi , Nayiroh Nurun
Published: October 2022

The increasing number of traditional boats made from wood can cause the forest to be deforested. Besides, it also results in scarcity and an increase in the price of basic wood materials so that production costs are increasingly expensive—also, the factors of decay by mould, heating, weathering. One of the efforts that can be made in the traditional shipbuilding process is through making boats made from cheap and high-quality E-Glass fibre laminate composite boards. The purpose of this study was to determine the effect of volume composition of E-glass fibres and scallop shell particles on the tensile strength of hybrid composites. Making hybrid composites by mixing scallop shell filler, E-Glass fibre and matrix. Percentage volume fraction 0C: 0E, 10C: 20E, 15C: 15E and 20C: 10E. The results showed that the maximum tensile strength at the volume fraction of 10C: 20E was 34,2694 MPa, this result was higher than the maximum requirements set by BSN in 2006, namely 0.304 MPa. The existence of a strong bond between the fibres and the matrix can increase the tensile strength of the composite as well as the influence of the scallop shell particles which can help the matrix to accept external loads/stresses so that the composite strength increases.
U-bend Optical Fiber to Determine Characteristics of pH Sensor
Authors: Yunus Muhammad
Published: October 2022

Determination of the characteristics of the pH sensor using U-shaped optical fiber was carried out with various varieties, namely length without a coat, indentation diameter, and the number of imperfections. Optical fiber as a light transmission medium is used as a sensor to detect the pH level of the solution. The sensor output is read on the OPM in the form of output power. The best characteristic of the pH sensor was obtained in the number of imperfections, namely number of imperfections 3 with a value range of 32.0 µW, a sensitivity of 3.2 µW/pH, and a resolution of 0.3 x 10-3 pH. The greater the power losses in the optical fiber sensor, the better the sensor characteristics. Determination of the characteristics of the pH sensor is very suitable to be carried out using U-shaped optical fiber in simple measurements and easy fabrication
Actual problems of hydraulic calculations of transport facilities for surface runoff drainage systems
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Feskova A. Ya.
Published: October 2022

The problems of hydraulic calculations of transport facilities include a number of accepted assumptions in the methodology developed in the last century and affecting the reliability of the results obtained. Despite the large number of publications on this subject, there are virtually no studies to assess the degree of influence of these assumptions on the reliability of hydraulic calculations of networks and reservoirs of surface runoff disposal systems. The results of the study of the flow rates in the final section of the collector, obtained using the method of limiting intensities and according to the hydraulic model, show their convergence under the condition of a continuous uniform increase in the surface runoff areas. Consequently, it was found out that in case of uniform discrete growth of runoff areas, application of the method of limiting intensities leads to underestimation of calculated discharges by 15-20%. In the case of non-uniform discrete growth, the calculation error can increase significantly. With an uneven discrete growth, the calculation error can increase significantly. The obtained results contribute to the issues of updating the methodology of hydraulic calculations of transport facilities of surface runoff drainage systems.
Improving the use of solid fuel in the layered combustion method
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Shkarovskiy A. L. , Grimitlin A. M. ,   Saint Petersburg State University of Architecture and Civil Engineering, Taurit V. R. ,   Saint Petersburg State University of Architecture and Civil Engineering
Published: October 2022

The article presents the results of studies, the purpose of which is to improve the efficiency and quality of using solid fuel in the layered method of combustion in low-power boilers. In order to achieve this, there are considered the tasks of increasing the efficiency of fuel use, reducing atmospheric pollution and improving the properties of slag, simplifying its further processing. The methodology of work is based on the use of active additives applied directly to the burning fuel layer. The action of the additives was determined by the methods of gas analysis and the compilation of the heat balance of the boiler. There have been obtained boiler performance indicators, which prove the effectiveness of the method. Recommendations have been developed for the implementation of the method in the conditions of poorly automated boiler houses with minimal costs for its implementation. Scientific and practical results of the study make it possible to significantly increase the efficiency of boilers, reduce emissions of products of incomplete combustion into the atmosphere, increase the density of slag, and reduce its volume and erosion. An additional positive social effect is an improvement in the working conditions of boiler operators and an increase in the culture of boiler maintenance.
Process of interaction of the elastic tire with the road surface covered with de-icing agent based on technical salt
Authors:   Eastern Siberian State University of Technology and Management, Gergenov S. M. , Fedotov A. I. ,   Irkutsk National Research Technical University, Darkhanov Zh. V. ,   Eastern Siberian State University of Technology and Management
Published: October 2022

When studying the traction properties of the elastic tire, it should be kept in mind that it is the investigation of the lateral reaction formation in the wheel contact patch with the supporting surface when it is moving with a lateral drifting that is particularly important for the researcher. In spite of numerous publications on this problem, there are practically no studies of lateral traction of the elastic wheel tire with a winter slippery road treated with chemical de-icing agent. The purpose of this study is to analyze the process of interaction of the elastic tire with a road surface covered with snow glaze and sand-salt mixture. As a result of this research, three variants of interaction of the elastic tire with the winter road have been revealed based on the different models of friction, namely, boundary, mixed and viscous models of friction, depending on the melting ability of technical salt. When mixed and viscous friction occurs between the tire and the road surface, a «third» body is formed, consisting of a mixture of particles of snow-ice deposits, salt and sand, which is able to slide on the layer of liquid salt solution formed on the supporting road surface, and significantly reduce the tire traction properties when driving with lateral drifting. The obtained results contribute to enlarging new scientific knowledge regarding lateral traction of elastic tires with the supporting surface of the road with winter slipperiness, which is important for increasing the active safety of vehicles on the roads in the cold season.
Analysis of strategic problems and prospects for the development of the gas engine market in the context of various scenarios of the «green transition» of the energy sector in Russia and abroad
Authors:   PJSC «Gazprom», Khatkov V. Y.
Published: October 2022

The paper considers the status and main approaches to solving the problems of reducing greenhouse gas emissions in the world and the Russian Federation, taking into account possible scenarios of the «green transition», the strategy of low-carbon development of Russia until 2050 and the prospects for using natural gas as a motor fuel. The purpose of this study is to analyze international and Russian approaches, as well as the tools for regulating greenhouse gas emissions. The study has summarized the administrative, technical and market measures used in the world practice to reduce greenhouse gas emissions. The conclusion is made about the relevance of research aimed at studying the commercial potential of using natural gas in order to achieve the planned indicators for reducing greenhouse gas emissions. The results of the study open up a new theoretical direction in the study of the problems of reducing greenhouse gas emissions.
Industry 4.0 in a series of technological paradigms and industrial revolutions: transformation of the construction industry
Authors:   Petersburg State University of Economics, Fedoseev I. V. , Yudenko M. N. ,   Petersburg State University of Economics, Vasiliev A. N. ,   Russian Presidential Academy of National Economy and Public Administration
Published: October 2022

The article proposes axioms which reveal the features of technological paradigms` development through industrial revolutions. The role of technological paradigms in the development of society is considered and the mechanism of change from the currently dominant paradigm to the incipient one is investigated. The argument for the development of technological paradigms as large socio-economic systems is given, which gives a deep understanding of the regression of technological paradigms, and research points to the exhaustibility of evolutionary improvements of the existing fundamental innovation and the inevitability of a change in technological paradigms. It is determined that the main features of Industry 4.0 allow it to be identified and conclude that the influence of people`s knowledge and their living environment on the volume of gross domestic product of the country is evidently increasing. The results of the expert survey methodology determine different levels of Industry 4.0 interaction and the main factors that influence the world construction industry. Conclusion is made that within the framework of Industry 4.0, the main problem of economy is resource scarcity, and the low material intensity and energy intensity of production in Industry 4.0 will allow rejecting the principle of territorial location of production near raw materials, energy sources, labor resources.
Consideration of progressive collapse in the design of overhead power transmission line supports
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Senkin N. A.
Published: October 2022

There has been carried out an analysis of regulations on the account of progressive collapse in the design of linear structures in relation to steel structures of supports of overhead power lines with a voltage of 330-750 kV. Methods are considered and examples are given for calculating a two-chain anchor-angular free-standing support for 330 kV overhead lines and an intermediate steel portal support on guy ropes for 750 kV overhead power transmission lines for emergency loads and impacts. The calculations for the conditions of the average operating mode are substantiated. Proposals have been developed to protect power transmission line supports from progressive collapse.
Formation of the architectural and planning structureof fitness centers based on fitness units
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Kozlov K. V.
Published: October 2022

A brief analysis and classification of fitness programs on the example of fitness centers in St. Petersburg are offered in the article. The functional zoning of fitness centers is revealed. There has been made an analysis of the composition of groups of premises related to certain functional zones, which results in a worked out definition of «fitness unit» concept as a minimum functional element included in the functional zones. The author proposes specified architectural and planning designs of fitness centers.
Investigation of the adsorption activity of carbon adsorbent for water purification obtained by thermochemical destruction of paper mill sewage sludge
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Dmitrieva K. G.
Published: October 2022

At present, fresh water sources continue to be polluted by industrial wastewater. At the same time, the materials used for water purification do not fully meet the modern growing needs of science, technology and industry. The use of various inexpensive carbon-containing wastes as adsorbents remains an urgent task to this day. The author proposes a new raw material for the production of a carbon adsorbent for water purification, which makes it possible to utilize the waste of industrial enterprises. There has been studied adsorption activity of the resulting carbon adsorbent, as well as the factors influencing this indicator.
Experimental studies of the efficiency of direct conversion of hydraulic energy into pneumatic one
Authors:   Tyumen Industrial University, Mironov V. V. , Erofeev E. A. ,   Tyumen Industrial University
Published: October 2022

The lack of direct conversion of hydraulic energy into pneumatic energy is considered to be one of the current problems in the sphere of energy conversion technologies. The purpose of this study is to determine the efficiency of the process of converting the initial hydraulic energy into useful pneumatic power at a laboratory experimental installation. As a result of the study, there has been determined the efficiency of direct energy conversion. This technology eliminates four extra stages of conversion. The efficiency of this conversion of hydraulic energy into pneumatic power is approximately 30% higher as compared to traditional technology. The results obtained contribute to the development of the technology of direct conversion of hydraulic to pneumatic energy.
Impact of Emotional Intelligence on Job Performance of Nurses with the Mediating Effect of Job Satisfaction
Authors: Chauhan Richa , Kaul Vidhi , Maheshwari Nidhi
Published: October 2022

The current study investigates the effect of Emotional Intelligence (EI) on the performance of nurses with the mediating effect of job satisfaction. This study measures the concept of EI, Job Performance, and Job Satisfaction across 385 respondents from various private and government hospitals and the locale of the study was the Delhi NCR region.
PLS-SEM was used for analyzing the data. The result indicates that a relationship exists between these three variables and job satisfaction mediates the relationship between Emotional Intelligence & Job performance. The findings of the current study showed that awareness of emotions, regulation of emotions, and managing of emotions are the significant components of EI which enhances leadership, critical care, professional development, interpersonal relationships, planning and collaboration aspects of Job Performance. Further, the mediating effects support that the positive working conditions and organizations’ compensation policy fetches higher level of Job Satisfaction among the professional and nursing employees who are satisfied as well as having a higher level of Emotional Quotient would be a better performer than the employees who are having a low level of emotional intelligence.
It can be recommended that while recruiting nursing employees along with their technical competence EI competence needs to be equally emphasized. Similarly, EI needs to be integrated into healthcare practice guidelines and performance evaluations as it is one of the important assets of individual persona.
Service Quality and Service Satisfaction in the Inpatient Setting: Moderating role of insurance status
Authors: Singh Vanita , Garg Amit
Published: October 2022

Background: The purpose of this study is to propose and test for the moderating role of insurance status on the relationship between service quality (SQ) and service satisfaction (SS) in a hospital setting. The study focuses on the state-run health insurance (SHI) provided to economically deprived families in India.
Methodology: Using a reliable and validated structured questionnaire adapted from Dagger’s hierarchical model of health service quality, exit interviews were conducted with 279 respondents. 310 study participants were randomly recruited (response rate = 90%) from the discharge list of general surgery ward of a private hospital in the Thane district of Maharashtra, India. Multi-group Structural Equation Modelling (SEM) in AMOS v.22 was used to test for the hypothesized model.
Findings:  The study finds that patients’ perceptions of different service quality dimensions, including inter-personal, administrative and technical are affected by the insurance status. The analysis identified technical quality as the key determinant of overall perceived service quality for patients insured under SHI. Results support our proposed moderating effect of insurance status on the relationship between service quality and service satisfaction.
Conclusion: The study findings indicate that patients receiving free treatment under SHIs may not have higher expectations of inter-personal and/or administrative quality, but are concerned about technical quality. For paid patients all the dimensions of service quality determine overall perceived service quality and service satisfaction. The study findings have implications for market segmentation strategies based on the insurance status. The study provides insights to SHI implementers for improving the program in the long run and also help hospital administrators identify the quality dimensions to focus upon and ensure patient satisfaction and loyalty.
The Lingering Effects: Examining mental health in India during a period of COVID-19 regression
Authors: Dhaliwal Amandeep
Published: October 2022

Purpose: COVID-19 has been recognized as a contagious disease which can cause serious health problems, even proving to be fatal in some cases. The swift spread of COVID-19 epidemic shook the world which led to lockdowns, isolation, and social distancing for the general population so as to curb and contain the spread. This was found to lead to mental health disorders amongst people. This study examines the prevalence and severity of anxiety, stress perception, and well-being levels among the people at the time when the COVID-19 was in regression (decline) in India.
Methods: In this cross-sectional study, 374 respondents’ mental health was evaluated using three standardized questionnaires: Generalized Anxiety Disorder [GAD-7], Perceived Stress Scale [PSS-4], and Five Wellbeing Index [WHO-5].
Results: The study revealed that almost 82% of respondents had moderate to severe levels of stress while 66% of respondents had mild to moderate levels of anxiety. Overall, 60% of respondents had poor (low) mental well-being. A strong negative correlation was found between mental well-being and perceived stress, and mental well-being and level of anxiety, in comparison to the correlation between anxiety and perceived stress was positive and statistically significant.
Conclusions: This study identified several long-term psychological effects of COVID. The presence of stress and anxiety and poorer mental well-being even at the time of decline in COVID-19 cases, highlights the need for serious attention to be given to psychological and psychiatric help and support throughout the duration and regression of such diseases. Health policymakers must ensure coherent and consistent plans for screening the mental health of the general population are in place to provide the required support in managing the long-term psychological and psychiatric effects of COVID.
Walmart Inc. in light of COVID-19 pandemic: the financial assessment
Authors: Mrozek Michał
Published: October 2022

Motivation: The pandemic's trajectory is challenging to be forecast. The COVID-19 pandemic modifications can cause the growth of infected people. Furthermore, the defined financial activity resulting from additional lockdowns may have a meaningful contrary impact on aggregate demand. The paper can motivate further study and examination in the field of financial indicators of the Walmart Inc. and other inspiring research.
Aim: The research regards the selected Walmart's financial indicators during the COVID-19 pandemic. The aim of the paper is the assessment of the financial situation of the Walmart Inc. as an American multinational retail corporation in light of COVID-19.
Materials and methods: The paper is using of statistical, dynamics, comparative, documentation analysis.
Results: The discussion shows that the multinational corporation within the retail sector succeeded in the research period. Walmart implemented the suitable mechanisms, solutions, and actions that mitigated the impact of the COVID-19 pandemic and, in consequence, positioned the world pioneer in multinational corporation retail in the leading rank against the rest of the entities competing in that diversified market.
BOKO HARAM: SHEKAU’S DEMISE – HALCYON OR NADIR FOR SUB-SAHARAN AFRICA’S FIGHT AGAINST TERRORISM?
Authors:   Department of Peace and Conflict Studies, Federal University Oye-Ekit, AJIBOYE Babatope Matthew
Published: October 2022

In Sub-Saharan Africa, no terrorist group has been as lethal as Boko Haram, under the leadership of Abubakar Shekau. Barely more than a decade, since the group’s inception, the entire Sub-Saharan Africa has been engulfed by deadly activities of the dreaded terrorist group. From evidence, more than 40,000 people have been killed, over 2 million people have been displaced, scores of forced migrants have been scattered across West Africa, properties worth billions of dollars have been destroyed, and governance in the sub-region has, essentially, been ineffective since 2009, when the group launched its violent campaign. Although there were responses both at the local front and regional front to hold back the menace of Boko Haram, these efforts were repeatedly met with repression under Shekau. However, on June 7th, 2021, there was a turn of events, as Abu Musab Al-Banawi, leader of the Islamic State of West Africa Province (ISWAP), confirmed the death of Shekau arising from a confrontation with this rival group. The question posed by this atypical occurrence is, ‘can we convincingly say Shekau’s death means the end of the road for terrorism in Sub-Saharan Africa?’ This article argues the opposite. Rejigging the memory of Mohammed Yusuf’s extermination by the police, Shekau’s influence, and the dominance of the Islamic State of West Africa Province (ISWAP), as the radical points of departure, the paper sees Shekau’s death as an alleyway for dynamic terrorism in Sub-Saharan Africa. Keywords: Shekau, Halcyon, Nadir, Lethal, Terrorism, Sub-Saharan, Africa.