bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Study on Generalized Heat and Mass in Casson Fluid with Hybrid Nanostructures
Authors: Sadiq Muhammad A. , Bahaidarah Haitham M. S.
Published: October 2021

The rheological model for yield stress exhibiting fluid and the basic laws for fluid flow and transport of heat and mass are used for the formulation of problems associated with the enhancement of heat and mass due to dispersion of nanoparticles in Casson. The heat and mass transfer obey non-Fourier’s laws and the generalized Fick’s law, respectively. Model problems are incorporated by thermal relaxation times for heat and mass. Transfer of heat energy and relaxation time are inversely proportional, and the same is the case for mass transport and concentration relaxation time. A porous medium force is responsible for controlling the momentum thickness. The yield stress parameter and diffusion of momentum in Casson fluid are noticed to be inversely proportional with each other. The concentration gradient enhances the energy transfer, and temperature gradient causes an enhancement diffusion of solute in Casson fluid. FEM provides convergent solutions. The relaxation time phenomenon is responsible for the restoration of thermal and solutal changes. Due to that, the thermal and solutal equilibrium states can be restored. The phenomenon of yield stress is responsible for controlling the momentum boundary layer thickness. A porous medium exerts a retarding force on the flow, and therefore, a deceleration in flow is observed. The thermal efficiency of MoS2−SiO2−Casson fluid is greater than the thermal efficiency of SiO2−Casson fluid.
Analyzing the Influence of Wine and Beer Drinking, Smoking, and Leisure Time Screen Viewing Activity on Body Weight: A Cross-Sectional Study in Germany
Authors: Raptou Elena , Papastefanou Georgios
Published: October 2021

The increasing global prevalence of overweight and obesity highlights an urgent need to explore modifiable obesogenic factors. This study investigated the impact of lifestyle factors, such as beer and wine drinking, cigarette smoking, and leisure time screen viewing activities, on body weight and the development of obesity. Individual level data were selected from a random sample of 3471 German adults using a two-stage disproportionate random sampling procedure. The empirical analysis employed a two-stage equations system and combined the endogenous treatment effects model with the quantile regression technique. Our estimations showed that the decisions to smoke and consume wine and beer were positively interrelated, especially in women. Frequent beer/wine drinkers of normal weight were found to have a lower BMI in the male subsample. Quantile regression estimates indicated a significant influence of smoking on BMI in both genders, with smokers’ BMI following an upward trend, especially in the upper quantiles of the distribution. Leisure time screen activity was found to have a major impact on females’ BMI. Prolonged television viewing and regular computer gaming had a strong relationship with weight increase in overweight women, whereas internet surfing was inversely correlated with the BMI of normal weight and slightly overweight female participants. Nutrition and health policies should direct individuals toward alternative recreational activities in order to substitute screen usage and reduce sedentary time. This study also raised doubts about the general belief that smokers have a lower body weight. As unhealthy behaviors usually co-occur or cluster together, obesity prevention interventions might also contribute to a decrease in smoking.
Molecular Epidemiology of Anisakis spp. in Wedge Sole, Dicologlossa cuneata (Moreau, 1881), from Fishmarkets in Granada (Southern Spain), Caught in Two Adjacent NE and CE Atlantic Areas
Authors: Buzo-Domínguez Sara , Morales-Yuste Manuel , Domingo-Hernández Ana María , Benítez Rocío , Adroher Francisco Javier
Published: October 2021

The presence of third stage larvae (L3) of Anisakis spp. in wedge sole, Dicologlossa cuneata (Moreau, 1881), purchased in fishmarkets in the city of Granada (Andalusia, southern Spain) was assessed. The wedge sole were caught in two FAO zones: area 27.IXa NE Atlantic (SW Spain coast) and area 34.1.11 CE Atlantic (NW Morocco coast). Only Anisakis larvae, type I, were detected in the largest fish (>20 cm) from the CE Atlantic. These were molecularly identified as A. simplex s.s. The prevalence (P) of Anisakis in this area was 12.5% and the mean intensity (MI) was 1. The presence of Hysterothylacium spp. larvae was also detected in the fish from both areas, with the prevalence being approximately double in the CE Atlantic area (12.5 vs. 5.7). A comparison between the Anisakis-infected and non-infected fish from this area showed that the former were significantly longer than the latter (p < 0.01). These results show that Anisakis parasitization of wedge sole sold in the markets of the city of Granada is of low prevalence and intensity (P = 4.5, MI = 1), especially in those from area 27.IXa (P = 0), indicating that the risk of human infection is low, particularly as this fish is traditionally prepared by deep-frying in oil in Andalusia (southern Spain).
Student Pharmacists’ Perceptions of Amazon Pharmacy
Authors: Stich Alexandra , Cava Christian , Cava Dominic , Axon David R.
Published: October 2021

Amazon recently launched their online pharmacy in the United States (US). However, no studies have explored student pharmacists’ perceptions of the potential impact of Amazon Pharmacy. This qualitative study used individual semi-structured interviews to examine third- and fourth-year student pharmacists’ perceptions of how Amazon Pharmacy will affect economic, clinical, and humanistic outcomes; the pharmacy experience; and the job market. Interviews were audio-recorded, transcribed verbatim, and thematically analyzed by two independent reviewers until saturation was reached, with differences resolved through discussion with a third researcher. Seventeen students participated in the study. Five themes were identified: perceived economic outcomes for patients, perceived clinical outcomes for patients, perceived humanistic outcomes for patients, perceived impact of the pharmacy experience for patients, and perceived influence of Amazon Pharmacy on the pharmacy market. The majority suggested Amazon Pharmacy would offer lower costs for patients (71%), improved medication adherence (76%), and improved quality of life (65%). There was a consensus that the Amazon Pharmacy experience would be different, with various opinions highlighting potential positive or negative aspects of the service. There were mixed opinions about job opportunities and impact on existing pharmacies. Future studies should evaluate economic, clinical, and humanistic outcomes for patients utilizing Amazon Pharmacy.
Electrospun Carbon Nanofibers Decorated with Ag3PO4 Nanoparticles: Visible-Light-Driven Photocatalyst for the Photodegradation of Methylene Blue
Authors: Panthi Gopal , Park Mira
Published: October 2021

For the first time, heterostructures of electrospun carbon nanofibers decorated with Ag3PO4 nanoparticles (Ag3PO4/CNFs) were successfully fabricated by the combination of simple and versatile electrospinning technique followed by carbonization and incorporation of Ag3PO4 nanoparticles via colloidal and precipitation synthesis approaches. The as-fabricated heterostructures were characterized by FESEM with EDS, XRD, TEM with HRTEM, FTIR and UV-vis diffuse reflectance spectroscopy. Experimental results revealed that the heterostructure obtained by colloidal synthesis approach (Ag3PO4/CNFs-1) was decorated with small-sized (~20 nm) and uniformly distributed Ag3PO4 nanoparticles on the surface of CNFs without any evident agglomeration, while in the heterostructure obtained by the precipitation synthesis approach (Ag3PO4/CNFs-2), CNFs were decorated with agglomerated and bigger-sized Ag3PO4 nanoparticles. The visible-light-driven photocatalytic investigation signified that the Ag3PO4/CNFs-1 heterostructure can exhibit higher performance towards the photodegradation of MB dye solution compared to the Ag3PO4/CNFs-2 heterostructure, which could be attributed to the synergistic effect between the uniformity and small size of Ag3PO4 nanoparticles and CNFs that can serve as a conductivity network to prevent the recombination of charge carriers. Moreover, the mechanism of the photocatalytic activity as-prepared heterostructure is proposed.
Measuring α-FPUT Cores and Tails
Authors: Flach Sergej
Published: October 2021

Almost 70 years ago, the Fermi–Pasta–Ulam–Tsingou (FPUT) paradox was formulated in, observed in, and reported using normal modes of a nonlinear, one-dimensional, non-integrable string. Let us recap the paradox. One normal mode is excited, which drives three or four more normal modes in the core. Then, that is it for quite a long time. So why are many normal modes staying weakly excited in the tail? Furthermore, how many? A quantitative, analytical answer to the latter question is given here using resonances and secular avalanches A comparison with the previous numerical data is made and extremely good agreement is found.
Acceleration in Germination Sensu stricto Plays a Central Role on Seedling Vigor in Post-Germination
Authors: Ribeiro-Oliveira João Paulo , Bosseli Marco Aurélio , da Silva Edvaldo Aparecido Amaral
Published: October 2021

An obvious relationship between germination sensu stricto and seedling development during post-germination has been considered, but not explained concerning vigor. Taking this into account, we used measurements of water dynamics in germinating seeds and seedling development to clarify that relationship. The biological model was soybean seeds, since it is the most relevant ‘true seed’ produced around world. Our findings suggest that the way energy is used (acceleration) and not its input (velocity) is the main aspect relating seed germination and seedling development, especially when considering vigor. However, velocity and acceleration can be complementary in analyses of seed physiology. Other measurements proposed here also have potential uses for testing vigor in seed lots, such as seedling vigor index and biological activity in the lot. Therefore, water dynamics in germinating seeds can be an interesting way for testing seed lots, because it is an easier, faster and cheaper method in relation to other non-destructive procedures.
Phenolic Composition and Antioxidant Activity of Peel, Pulp and Seed Extracts of Different Clones of the Turkish Grape Cultivar ‘Karaerik’
Authors: Kupe Muhammed , Karatas Neva , Unal Mehmet Settar , Ercisli Sezai , Baron Mojmir , Sochor Jiri
Published: October 2021

The Erzincan plain is one of the richest regions in Turkey in terms of plant biodiversity. In this region, the famous grape cultivar ‘Karaerik’ has always dominated grape production due to its berry characteristics. The cultivar shows great morphological variation at clonal level. In this study, the total phenolic content and antioxidant activity of peel, pulp and seed extracts of nine ‘Karaerik’ clones sampled from same location were investigated. The Folin–Ciocalteu method was used to determine the total phenolic content of peel, pulp and seed extracts of nine clones. To determine antioxidant activity, three well known assays such as DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate), FRAP (Ferric Reducing Antioxidant Power) and TEAC (Trolox Equivalent Antioxidant Capacity) were used. In addition, the correlation between total phenol content and DPPH, FRAP and TEAC was determined. Results showed that among the tissues, seed samples in berries of all clones had the highest total phenol content and antioxidant activity determined by three assays. Seed samples were followed by peel and pulp for total phenolic content and antioxidant activity. Among the nine ‘Karaerik’ clones, Clone 8 had the highest total phenolic content (149 mg GAE/100 g FW) while Clone 3 had the lowest (111 mg GAE/100 g FW). Peel, pulp and seed samples of nine ‘Karaerik’ clones showed strong antioxidant activity in DPPH, FRAP and TEAC assays. In particular, grape seeds were found rich for better in phenolic compounds including gallic acid, quercetin, catechin, chlorogenic acid, caffeic acid and p-coumaric acid. Clones such as 7, 8 and 9 higher antioxidant activity may present great potential for grape breeders and the food industry as well as health-conscious consumers.
To Advance Industrial Green Technology via Environmental Governance—Evidence from China’s Industrial Sector
Authors: Shi Junwei , Yu Yingjing
Published: October 2021

Industrial green technology progress is an effective way to realize high-quality economic development in China. The different competitive incentives of local governments make a difference in the intensity of environmental regulation between regions. The intensity of environmental regulation is different in different areas of the same industry, leading to the inter-regional transfer of pollution enterprises. The regional distribution of industries is different, which determines the different industries’ needs to coordinate different regions. Only when various industries realize the coordination of regional governance can they jointly promote the progress of industrial green technology. Based on data from 33 industrial sectors in China from 2001 to 2015 and considering the institutional evolution of governance synergy, this study comprehensively investigated the influence mechanism of local government environmental regulation on the industrial green technology progress using the mediating effect model. We found that environmental regulation promoted industrial technological progress through governance synergy and a low degree of inter-regional regulation coordination hindered the industries’ green technology progress. With the change in inter-regional governance synergy levels, we further discovered that the impact of environmental regulation on industrial green technology progress changed substantially. At a low level of governance synergy, environmental regulation inhibited industrial green technology progress. At a high level of governance synergy, environmental regulation promoted industrial green technology progress. While strengthening environmental regulation, we should promote inter-regional cooperation at the industry level. Only by collectively enforcing pollution regulations in industrial level can industrial green technology progress be promoted.
Chip-Scale Quantum Emitters
Authors: Sasani Ghamsari Morteza
Published: October 2021

Integration of chip-scale quantum technology was the main aim of this study. First, the recent progress on silicon-based photonic integrated circuits is surveyed, and then it is shown that silicon integrated quantum photonics can be considered a compelling platform for the future of quantum technologies. Among subsections of quantum technology, quantum emitters were selected as the object, and different quantum emitters such as quantum dots, 2D materials, and carbon nanotubes are introduced. Later on, the most recent progress is highlighted to provide an extensive overview of the development of chip-scale quantum emitters. It seems that the next step towards the practical application of quantum emitters is to generate position-controlled quantum light sources. Among developed processes, it can be recognized that droplet–epitaxial QD growth has a promising future for the preparation of chip-scale quantum emitters.
Hydrocracking of Octacosane and Cobalt Fischer–Tropsch Wax over Nonsulfided NiMo and Pt-Based Catalysts
Authors: Ma Wenping , Kang Jungshik , Jacobs Gary , Hopps Shelley D. , Davis Burtron H.
Published: October 2021

The effect of activation environment (N2, H2 and H2S/H2) on the hydrocracking performance of a NiMo/Al catalyst was studied at 380 °C and 3.5 MPa using octacosane (C28). The catalyst physical structure and acidity were characterized by BET, XRD, SEM-EDX and FTIR techniques. The N2 activation generated more active nonsulfided NiMo/Al catalyst relative to the H2 or H2S activation (XC28, 70–80% versus 6–10%). For a comparison, a NiMo/Si-Al catalyst was also tested after normal H2 activation and showed higher activity at the same process conditions (XC28, 81–99%). The high activity of the NiMo/Al (N2 activation) and NiMo/Si-Al catalysts was mainly ascribed to a higher number of Brønsted acid sites (BAS) on the catalysts. The hydrocracking of cobalt wax using Pt/Si-Al and Pt/Al catalysts confirmed the superior activity of the Si-Al support. A double-peak product distribution occurred at C4–C6 and C10–C16 on all catalysts, which illustrates secondary hydrocracking and faster hydrocracking at the middle of the chain. The nonsulfided NiMo/Al and Pt/Al catalysts, and NiMo/Si-Al catalyst produced predominantly diesel (sel. 50–70%) and gasoline range (sel. > 50%) hydrocarbons, respectively, accompanied by some CH4 and light hydrocarbons C2–C4. On the other hand, the hydrocarbon distribution of the Pt/Si-Al varied with conditions (i.e., diesel sel. 87–90% below 290 °C or gasoline sel. 60–70% above 290 °C accompanied by little CH4) The dependence of the isomer/paraffin ratio on chain length was studied as well. The peak iso/paraffin value was observed at C10–C13 for the SiAl catalyst.
Fischer–Tropsch Synthesis: Effect of the Promoter’s Ionic Charge and Valence Level Energy on Activity
Authors: Ribeiro Mirtha Z. Leguizamón León , Souza Joice C. , Gnanamani Muthu Kumaran , Martinelli Michela , Upton Gabriel F. , Jacobs Gary , Ribeiro Mauro C.
Published: October 2021

In this contribution, we examine the effect of the promoter´s ionic charge and valence orbital energy on the catalytic activity of Fe-based catalysts, based on in situ synchrotron X-ray powder diffraction (SXRPD), temperature-programmed-based techniques (TPR, TPD, CO-TP carburization), and Fischer–Tropsch synthesis catalytic testing studies. We compared the promoting effects of K (a known promoter for longer-chained products) with Ba, which has a similar ionic radius but has double the ionic charge. Despite being partially “buried” in a crystalline BaCO3 phase, the carburization of the Ba-promoted catalyst was more effective than that of K; this was primarily due to its higher (2+) ionic charge. With Ba2+, higher selectivity to methane and lighter products were obtained compared to the K-promoted catalysts; this is likely due to Ba´s lesser capability of suppressing H adsorption on the catalyst surface. An explanation is provided in terms of a more limited mixing between electron-filled Ba2+ 5p and partially filled Fe 3d orbitals, which are expected to be important for the chemical promotion, as they are further apart in energy compared to the K+ 3p and Fe 3d orbitals.
Waste Management System Fraud Detection Using Machine Learning Algorithms to Minimize Penalties Avoidance and Redemption Abuse
Authors: Hewiagh Ali , Ramakrishnan Kannan , Yap Timothy Tzen Vun , Tan Ching Seong
Published: October 2021

Online frauds have pernicious impacts on different system domains, including waste management systems. Fraudsters illegally obtain rewards for their recycling activities or avoid penalties for those who are required to recycle their own waste. Although some approaches have been introduced to prevent such fraudulent activities, the fraudsters continuously seek new ways to commit illegal actions. Machine learning technology has shown significant and impressive results in identifying new online fraud patterns in different system domains such as e-commerce, insurance, and banking. The purpose of this paper, therefore, is to analyze a waste management system and develop a machine learning model to detect fraud in the system. The intended system allows consumers, individuals, and organizations to track, monitor, and update their performance in their recycling activities. The data set provided by a waste management organization is used for the analysis and the model training. This data set contains transactions of users’ recycling activities and behaviors. Three machine learning algorithms, random forest, support vector machine, and multi-layer perceptron are used in the experiments and the best detection model is selected based on the model’s performance. Results show that each of these algorithms can be used for fraud detection in waste managements with high accuracy. The random forest algorithm produces the optimal model with an accuracy of 96.33%, F1-score of 95.20%, and ROC of 98.92%.
A Novel Method of Transmission Enhancement and Misalignment Mitigation between Implant and External Antennas for Efficient Biopotential Sensing
Authors: Islam Md Shifatul , Kiourti Asimina , Islam Md Asiful
Published: October 2021

The idea of passive biosensing through inductive coupling between antennas has been of recent interest. Passive sensing systems have the advantages of flexibility, wearability, and unobtrusiveness. However, it is difficult to build such systems having good transmission performance. Moreover, their near-field coupling makes them sensitive to misalignment and movements. In this work, to enhance transmission between two antennas, we investigate the effect of superstrates and metamaterials and propose the idea of dielectric fill in between the antenna and the superstrate. Preliminary studies show that the proposed method can increase transmission between a pair of antennas significantly. Specifically, transmission increase of ≈5 dB in free space and ≈8 dB in lossy media have been observed. Next, an analysis on a representative passive neurosensing system with realistic biological tissues shows very low transmission loss, as well as considerably better performance than the state-of-the-art systems. Apart from transmission enhancement, the proposed technique can significantly mitigate performance degradation due to misalignment of the external antenna, which is confirmed through suitable sensitivity analysis. Overall, the proposed idea can have fascinating prospects in the field of biopotential sensing for different biomedical applications.
Analytical Model for the Design of HSFC and UHSFC Jackets with Various Steel Fiber Volume Fraction Ratios for the Retrofitting of RC Beam-Column Joints
Authors: Tsonos Alexander-Dimitrios , Kalogeropoulos George
Published: October 2021

High-strength steel fiber-reinforced concrete (HSFC) and ultra-high strength steel fiber-reinforced concrete (UHSFC) jackets have been proved experimentally to be much more effective with respect to other strengthening schemes in improving the hysteresis performance of existing substandard reinforced concrete (RC) structural members. In this paper, an existing analytical model for the prediction of the shear capacity of RC beam-column joints strengthened with a HSFC or UHSFC jacket is extended to provide design formulation of these innovative HSFC and UHSFC jackets. An authoritative validation of the proposed formulation is also achieved by comparisons of experimental results of 50 beam-column joint specimens with the analytical predictions of the model. Test data used for verification have been collected from the literature based on experimental studies of the authors and other researchers. The merits of the HSFC and UHSFC jacketing technique are also highlighted in the state of practice. Design and application of the proposed fiber-reinforced concrete jackets in deficient existing RC beam-column joints provides a sustainable strengthening technique by contributing to the reduction in the cost and to labor-intensive procedures of common jackets by completely replacing the installation of reinforcement.
Non-Hemorrhagic Adrenal Infarction during Pregnancy: The Diagnostic Imaging Keys
Authors: Chagué Pierre , Marchi Antoine , Fechner Alix , Hindawi Ghina , Tranchart Hadrien , Carrara Julie , Vivanti Alexandre J. , Rocher Laurence
Published: October 2021

Background: non-hemorrhagic adrenal infarction (NHAI) is a rare cause of acute abdominal/flank pain during pregnancy; in order to ensure prompt and appropriate treatment, this diagnosis should not be overlooked. This case series highlights pertinent imaging findings, including ultrasounds (USs), computed tomography (CT), and magnetic resonance imaging (MRI) of recent NHAI cases. Methods: we compiled all consecutive NHAI cases from two university hospitals over a two-year period and checked the relevant clinical, laboratory, and imaging findings. Relevant articles on NHAI published from January 2010 to March 2021 were analyzed. Results: six cases were found in our database. CT-scans typically showed enlarged, hypodense, and non-enhanced adrenal glands. Unenhanced MRIs allowed for diagnoses and showed enlarged adrenal glands in the signal hyperintensity on T2 and diffusion-weighted imaging, without any signal hyperintensity on T1. In two of our six cases, USs showed swollen adrenal glands with fluid collection. Conclusion: NHAI and its differential diagnosis—in cases of acute pain during pregnancy—highlight the crucial roles of integrated radiological examination and cooperation between obstetricians and radiologists, both of whom should consider the location of the pain, the accessibility and tolerance of MRI, and the radiation exposure of CT. Despite its supposed poor sensitivity, an US performed because the patient reports pain should also be used to examine the adrenal gland regions. Non-enhanced MRI is clearly of value and access to it in emergencies is important to avoid radiation exposure
Improved Image Quality for Static BLADE Magnetic Resonance Imaging Using the Total-Variation Regularized Least Absolute Deviation Solver
Authors: Chen Hsin-Chia , Yang Haw-Chiao , Chen Chih-Ching , Harrevelt Seb , Chao Yu-Chieh , Lin Jyh-Miin , Yu Wei-Hsuan , Chang Hing-Chiu , Chang Chin-Kuo , Hwang Feng-Nan
Published: October 2021

In order to improve the image quality of BLADE magnetic resonance imaging (MRI) using the index tensor solvers and to evaluate MRI image quality in a clinical setting, we implemented BLADE MRI reconstructions using two tensor solvers (the least-squares solver and the L1 total-variation regularized least absolute deviation (L1TV-LAD) solver) on a graphics processing unit (GPU). The BLADE raw data were prospectively acquired and presented in random order before being assessed by two independent radiologists. Evaluation scores were examined for consistency and then by repeated measures analysis of variance (ANOVA) to identify the superior algorithm. The simulation showed the structural similarity index (SSIM) of various tensor solvers ranged between 0.995 and 0.999. Inter-reader reliability was high (Intraclass correlation coefficient (ICC) = 0.845, 95% confidence interval: 0.817, 0.87). The image score of L1TV-LAD was significantly higher than that of vendor-provided image and the least-squares method. The image score of the least-squares method was significantly lower than that of the vendor-provided image. No significance was identified in L1TV-LAD with a regularization strength of λ= 0.4–1.0. The L1TV-LAD with a regularization strength of λ= 0.4–0.7 was found consistently better than least-squares and vendor-provided reconstruction in BLADE MRI with a SENSitivity Encoding (SENSE) factor of 2. This warrants further development of the integrated computing system with the scanner.
Sediment Sources and Dispersion on the Western Sunda Shelf, Malay Peninsula, Southern South China Sea
Authors: Liu Yanguang , Li Chuanshun , Omar Ramlan Bin , Shi Xuefa , Zhang Hui , Faiz Noraswana Nor
Published: October 2021

Thirty-nine surface sediment samples collected from the western Sunda Shelf off the Malay Peninsula (WSSMP) in the southern South China Sea (SCS) were analysed for grain size, major and trace elemental compositions, and light/heavy mineral contents to trace the sediment sources and their transport mechanisms in the study area. In the WSSMP, the surface sediments are relatively poorly sorted but transportable. A principal component analysis of 37 elements and grain size fractions indicates that the surface sediments can be grouped into four major assemblages in the study area. Integrating with the light/heavy minerals data in the 63–125 μm fractions of the surface sediment samples, to better trace the sediment sources of the coarse-grained components in the marine environment, the study area can be further divided into four sediment provinces. Province I is located in the northwestern part of the study area. The concentrations of TiO2, Na2O, garnet, siderite, and glauconite in Province I were higher than in the other provinces. The main sediment source for this province originated from the Kelantan River and the Gulf of Thailand transported by the northeastern monsoon current. Province II is located offshore of the Pahang and Endau Rivers. The percentages of TiO2, rare earth elements, Al2O3, quartz, plagioclase, hypersthene, and magnetite in the surface sediments were typically higher in this province than in the other provinces. The Pahang and Endau rivers provide most of the sediments to this province, which are transported by southward coastal currents. Province III is located in the northeastern and eastern parts of the study area, where the coarse-grained sediment fraction had relatively high hornblende and biotite contents. Sediments in this province are mostly transported from the Mekong River during the northeastern monsoon. The other parts of the study area belong to Province IV, where the surface sediment elemental and mineral concentrations were mostly between those of the other three provinces. Therefore, we suggest that Province IV has a mixed source due to inputs from the surrounding rivers.
Testing and Evaluation of the Electric Drive System on the Vehicle Level
Authors: Kong Zhiguo , Zhang Wei , Zhang Helin
Published: October 2021

In order to obtain the performance of the electric drive system (EDS) on the vehicle level correctly and effectively, the authors carried out research on the testing and evaluation technology. Firstly, the typical control strategy and its influence and limitations regarding the EDS performance were discussed in detail. Secondly, a test system on four-wheel dynamometers with a high-performance data acquisition and analysis system was introduced. A dedicated test was performed. Further analysis of the results was introduced. It is proved that the method introduced here is feasible and effective, which is beneficial to benchmarking and evaluation of the EDS used in electric vehicles.
Without the past there is no future
Authors: Ryzhonina Tatyana Vladimirovna
Published: October 2021

The article tells about the formation of the nursing service in the Penza region and the history of the development of nursing in one of the oldest medical organizations.
Epidemiological features of age-gender distribution of coronavirus infection COVID-19 incidence and mortality (review)
Authors: Kaira Alla Nikolaevna , Svitich Oksana Anatolievna , Murzina Alena Andreevna
Published: October 2021

The review of available literature sources and Internet resources for 2019–2021 is presented. It is devoted to the age-gender characteristics of the incidence of COVID-19, as well as mortality and mortality as a result of coronavirus infection in the world and in the Russian Federation as of May 2021. It is established that the main number of cases of new coronavirus infection is concentrated among the young working population from 40 to 59 years. At the same time, some countries have their own characteristics with a shift to younger age groups. There were no significant differences between men and women, with the exception of the age group of 85 years and older, where the female population prevails. The analysis of lethality showed that the most vulnerable groups are those over 80 years of age.
Medical examinations for office employees
Authors: Burak Vasiliy Evgenievich , Dontsov Sergey Aleksandrovich
Published: October 2021

The transition of the Russian Federation to new regulations in the field of labor protection in 2021 requires preliminary and periodic medical examinations of about 30–40 million office employees, which creates a number of organizational and economic problems for employers. The basis for conducting medical examinations of office personnel is the presence at the workplace of the electromagnetic field of the broadband frequency spectrum (5 Hz — 2 kHz, 2 kHz — 400 kHz), which is considered as a prerequisite for the appearance of occupational diseases associated with the influence of the electromagnetic field, leading to a disorder of the autonomic (autonomous) nervous system and with visually strenuous work, leading to the appearance of progressive myopia. The order of the Ministry of Health of the Russian Federation No. 29n of 28.01.2021 does not contain the exceptions characteristic of the latest editions of the order of the Ministry of Health and Social Development of the Russian Federation No. 302n concerning the intensity of the impact of the factor «when exceeding the maximum permissible level» or «work on reading, entering information, working in the dialog mode in the amount of at least 50 % of the working time», which means that the employer must conduct medical examinations of office employees working with a PC. The number of necessary laboratory and functional tests decreased by 1.8 times. Paradoxical is the transfer from the order of the Ministry of Health and Social Development (No. 302n) to the new order of the Ministry of Health of the Russian Federation (No. 29n) of the connection of electromagnetic fields exclusively with ophthalmological problems, ignoring no less significant problems of damage to the nervous system. The inclusion of a dermatovenerologist in the commission is completely unjustified, since the impact of the electromagnetic field of the broadband frequency spectrum does not cause significant problems of the dermatovenerological profile. Taking into account the requirements of the order of the Ministry of Health and Social Development No. 417n, it was proposed to replace a dermatovenerologist with a psychotherapist in the composition of the commission for conducting medical examinations of office employees with a psychotherapist with the inclusion in the table «Frequency and volume of mandatory preliminary and periodic medical examinations of employees» of the Appendix of the order of the Ministry of Health No. 29n of laboratory and functional studies of a psychotherapeutic profile.
The role of education in the accumulation and transmission of social experience
Authors: Flier Andrey Yakovlevich
Published: October 2021

It is demonstrated that social experience is accumulated in the process of real joint life activity of people in the course of satisfying their group and individual interests and needs, in which there is a constant spontaneous rejection of those forms (technologies and results) of their actions, conduct, communicative acts, the used means, ideological and value foundations, etc. that are recognized as harmful or potentially dangerous for the existing level of social integration of the team and turn out to be unacceptable in terms of their social cost and consequences. Some of these undesirable forms eventually fall under institutional taboo (legislative, religious and other prohibitions, sanctions, etc.), while others remain condemned within the framework of customs (morality, virtue). The forms that in the short term, and especially in the long term, prove to be quite acceptable or even desirable from the point of view of maintaining, reproducing, and sometimes increasing the level of social consolidation of community members, their tolerance, the quality of their mutual understanding and interaction, both spontaneously and over time institutionally selected as recommended, are accumulated and consolidated in social norms, standards, values, rules, laws, and ideological principles. Education is one of these most effective forms. The article shows what functions are performed by education at all levels and stages.
From modernism to metamodernism. Change of eras as transformation of forms of creative activity: from philosophy to fashion
Authors: Sapozhnikova Viktoriya Stanislavovna
Published: October 2021

The article deals with the current direction of metamodernism as the final stage of the postmodernism era and with the main representatives of this era. The author traces in a comparative plan the features of three eras: modernism, postmodernism and metamodernism, showing the specifics of the subject of historical action in these periods, and reveals such features of the modernism era as its rationalism and the desire to produce new meanings and ideas, historical consistent thinking, allowing the representatives of the Enlightenment era to realize the qualities of this period as the next stage of development that replaced the Middle Ages. The author demonstrates that the era of postmodernism, which replaced the Enlightenment or modernism, recorded a stable denial of the former main dominants, replacing uniqueness with replicability, novelty - with repetition, the desire to follow big ideas - an intellectual game. The era of metamodernism is associated by the author with the development of digital technologies. The article touches upon the problem of fashion as the sphere of culture, which quite fully embodies the main tendencies of the change of eras.
Digital society technologies: benefits and risks
Authors: Kostina Anna Vladimirovna
Published: October 2021

In his Address to the Federal Assembly on December 1, 2016, the President of Russia outlined the relevance of the systematic program of the digital economy related to the development of the “economy of a new technological generation”. The definition of the digital economy was presented in the Strategy for the Development of the Information Society in the Russian Federation for 2017–2030, published a little later, as an activity in which the key factors of production are data presented in digital form, while their processing and use in large volumes, including directly at the time of their formation, allow to significantly increase the efficiency, quality and productivity in various types of production, technologies, equipment during storage, sale, delivery and consumption of goods and services, in comparison with traditional forms of management. Today, the digital transformation of society, its economic, financial, social spheres, and education has acquired a large-scale nature. In October 2020, Russian Prime Minister M. Mishustin signed Resolution No. 1646 on a new approach to digitalization of government agencies. The article shows the unconditional benefits of the introduction of digital technologies, as well as the risks associated with their implementation.
Association of urinary triclosan and methyl-triclosan levels with predictive indicators of cardiovascular disease and obesity in children and adolescents in 2020 (case study: Kerman, Iran)
Authors: Nasab Habibeh , Mirzaee Moghaddameh , Ebrahimpour Karim , Hashemi Majid
Published: October 2021

Background: Exposure of children and adolescents to endocrine disrupting chemicals (EDCs) causes the development of non-communicable diseases. Triclosan (TCS) is a fat-soluble antimicrobial agent, and methyl-triclosan (MTCS) is the predominant metabolite of TCS. The increasing use of consumables TCS (toothpaste, mouthwash, personal care products) in human has raised concerns about human health. Methods: The urinary concentrations of TCS and MTCS were measured by GC/MS. Lipid profiles (TG, TC, LDL, and HDL), anthropometric parameters (WC, BMI z-score, and BMI), FBS, SBP, and DBP tests were performed on 79 children and adolescents. Results: Of 79 people included as the study population, 42 subjects (53.16%) were males. Most of the study population as 32 subjects (40.50%) were obese. The mean concentrations of TCS and MTCS in the obese population were 5.47 ± 2.99 and 2.32 ± 1.04 µg/L, respectively. After adjusting for possible confounding factors, the results showed that a one-unit increase in DBP caused a 0.03 units increase in TCS levels in male subjects (P=0.01). A one-unit increase in DBP also caused a 0.02 units increase in MTCS (P=0.001). There was a significant relationship between TCS and HDL (OR=0.90, P=0.005), LDL (OR=1.13, P=0.01), and TG (OR =1.05, P<0.0001). There was also a significant relationship between MTCS and HDL (OR=0.88, P=0.001), LDL (OR=1.03, P=0.009), and TG (OR=1.04, P < 0.0001). Conclusion: According to the results, there is a relationship between TCS, MTCS, and predictive indicators of cardiovascular diseases and obesity.
RESULTS OF EXPERIMENTAL STUDIES OF THE PROCESS OF CUTTING SOFT WOOD WITH DISC KNIVES
Authors: Ivanovskiy Vladimir , Jujukin Nikolai , Safarov Kishvarsho
Published: October 2021

Stamping of softwood is still a poorly researched process of chipless division. The research on commercially available equipment was carried out. Multivariate experiments were held according to standard methods with the number of measurements from 20 to 150 using softwood including conifers. A computer was used to substantiate the obtained coefficients of the regression equations. The magnitude of external factors such as loading mode, duration and the introduction of plasticizers were studied. Exploratory experiments made it possible to accurately establish the magnitude of the external load during direct and oblique collapse, as well as the optimal deformation temperature. Moreover, the studies were carried out taking into account the different moisture content of the wood. Regression models for four factors with two outputs were obtained. Insignificant coefficients were excluded and further research of the influence of humidity, temperature, section size and shape of the work piece on the surface quality of stamped parts were carried out. As a result, the dependence of the magnitude of deformations in wood on load and temperature was built. Solving the optimization problem made it possible to identify the following parameters of the processes of stamping softwood: density within 400 kg/m3 and temperature 156 degrees Celsius
Propuesta de automatización para el seguimiento de ventas en microempresas
Authors: Reza Morales Juan Sebastián
Published: October 2021

Varias microempresas realizan gran parte de la comercialización de sus productos de forma manual, sin una gestión de información óptima. En muchas ocasiones, el almacenamiento de estos datos es nulo. Registrar el trabajo realizado a lo largo de los principales flujos y acciones que se dan al momento que el agente de ventas contacta al cliente, oferta el producto y registra una orden de compra, es clave a razón de generar una visión concreta e integra acerca del desempeño real de los colaboradores, sin dejar de lado que pone a disposición una estadística global del negocio. La automatización de los procesos que realizan los agentes para llevar a cabo el registro de órdenes incrementará la eficiencia y la productividad de este flujo. Toda esta información automatizada, gestionada y almacenada a través de un sistema, brindará a la gerencia facilidad en la toma de decisiones que potenciarán el auge del negocio.
La automatización de los procesos que realizan los agentes de un negocio para llevar a cabo el registro de órdenes, se podría presentar como una vía para aumentar la eficiencia y la productividad de los mismos, sin dejar de lado que ayudaría a la gerencia a tener una sólida información acerca del desempeño de sus colaboradores y contar con estadísticas fundamentales acerca del rating de sus productos. Con toda esta información automatizada y persistente a través de un sistema web, la gerencia del negocio podrá tomar decisiones para el beneficio del mismo.
Ingeniería social, un ejemplo práctico
Authors: Prado Díaz Juan Pablo
Published: October 2021

En la actualidad, las empresas han adoptado espacios de almacenamiento digitales, donde recopila uno de sus activos más valiosos, la información, la misma que puede constituir datos como estados financieros, cartera de clientes, datos que representa valor monetario, etc., esta puede ser codiciada por entidades mal intencionadas como puede ser empresas competidoras, ex empleados o también criminales informáticos, los cuales pueden utilizar estos datos como objeto de venta a la competencia, extorsión, manipulación, entre otros crímenes. Los delincuentes informáticos han empezado a robar y filtrar información mediante un conjunto de métodos y técnicas, la cual se denomina ingeniería social, la cual se enfoca en ataques a los empleados de una entidad. Es por esta razón que se ve necesario realizar campañas de concientización a todo el personal de una empresa, puesto que es uno de los vectores de riesgo informático que más ha sido explotado en la historia de la ciberseguridad. En el presente trabajo de investigación se propone una metodología para la generación y ejecución de campañas de ingeniería social, en el mismo se obtendrá como resultado una evaluación de vulnerabilidad a nivel del personal de determinada empresa, y se concluirá un grado de riesgo para la misma.
Análisis de sentimientos para Twitter con Vader y TextBlob
Authors: Alemán Viteri Sofía Belén
Published: October 2021

El análisis de sentimientos constituye una herramienta fundamental para el éxito de las actividades orientadas al público. Las redes sociales se han consagrado como un escenario válido para realizar este análisis, especialmente Twitter, que ofrece un API libre para la obtención de datos. El proceso para análisis de sentimientos incluye etapas de descarga, utilizando la librería Tweepy, depuración implementando métodos para eliminar símbolos que no aporten en el sentimiento del tuit y análisis con dos librerías: Vader y TextBlob. Estas devuelven un porcentaje que define si el tuit es positivo o negativo; sin embargo, cada una funciona con un algoritmo y entrenamiento diferente que ocasiona discrepancia en los resultados, TextBlob presentó mayor precisión. La parte final del análisis constituyen en el cálculo de métricas: precisión, exactitud, sensibilidad, especificidad y matriz de confusión.
Simulación de una red empresarial mediante la herramienta Cisco Packet Tracer
Authors: Chicaiza Puedmag Carlos Alexander
Published: October 2021

A partir de la pandemia suscitada en el año 2020 se han tenido que postergar varias actividades de diferentes sectores, mientras que otras han migrado de la modalidad presencial a la virtual. La educación es una de estas que ha tenido que cambiar, aunque en un inicio fue complicado adaptarse a la modalidad online, muchas aplicaciones han ayudado en este proceso, estas aplicaciones, de hecho, han llegado a tener un mayor auge a causa de ello, una de esas plataformas es Cisco Packet Tracer. Dicho programa mencionado anteriormente permite realizar simulaciones de redes empresariales, ya que, dentro de la plataforma se pueden utilizar distintos dispositivos de hardware, al igual que permite realizar la configuración de cada uno de esos dispositivos, por lo cual, la herramienta es de gran importancia, tanto para las universidades, como para los estudiantes, ya que permite estudiar a mayor profundidad cada uno de los dispositivos de red que emula la aplicación.
Evaluación de riesgos ergonómicos en productores de cacao
Authors: Gavilanez-Dalgo Nix Santiago , Orozco-Ramos Jhonny Marcelo , Moyano-Alulema Julio César , Brito-Carvajal Jesús Román
Published: October 2021

El objetivo general de la investigación fue identificar la situación actual de los agricultores expuestos a lesiones músculo esqueléticas en la cosecha y transporte de la mazorca del cacao en la asociación Agroartesanal Wiñak. Se planteó como metodología la descriptiva, desde un enfoque cuantitativo. Se aplicó una encuesta, conformada por 8 interrogantes de tipo cerradas y selección única, la cual fue validada por tres expertos con conocimiento de seguridad industrial, salud ocupacional y ergonomía. La misma se aplicó a la muestra constituida por 81 socios activos de dicha organización. En cuanto a los resultados se destaca que la mayoría manifestó el desconocimiento en cuanto a la postura, buen manejo y resguardo de la salud laboral. Se concluye que es necesario la profundización acerca de las lesiones y enfermedades que los agricultores contraen mediante la forma de trabajo tradicional (chacra) y como lesiona su salud y además promover la capacitación requerida.