bluuebunny/crossref_metadata_2025 huggingface dataset:
A Review of the Progress in Globally Important Agricultural Heritage Systems (GIAHS) Monitoring
Authors: Jiao Wenjun , Yang Xiao , Min Qingwen
Published: August 2022

In order to protect traditional agricultural systems of global importance, the Food and Agriculture Organization of the United Nations (FAO) launched an initiative for the conservation of Globally Important Agricultural Heritage Systems (GIAHS) in 2002. After nearly two decades of development, the number of GIAHS has increased from the initial 5 in 2005 to the current 65 in 22 countries around the world. Despite the remarkable increase in the number of GIAHS, many countries are now facing the difficult task of dynamic conservation and adaptive management of GIAHS. As an important element of heritage management, monitoring plays an important role in improving the level of heritage management. Scientific and effective monitoring can not only achieve the conservation of the heritage itself and the maintenance of its value, but also the sustainable development of the heritage site. However, FAO did not put forward mandatory requirements for GIAHS monitoring, nor did it issue any guiding document on GIAHS monitoring, but left it to various countries to explore their own GIAHS monitoring. In this context, the paper systematically sorts out the theoretical research and practical exploration of GIAHS monitoring conducted by different countries and research institutions, comparing and analyzing the differences between the theoretical design of monitoring GIAHS themselves and that of GIAHS action plan monitoring, as well as the differences in practical exploration of GIAHS monitoring among China, South Korea, Japan and Portugal. This paper argues that countries and research institutions face common problems in the research and application of GIAHS monitoring, which are: (1) low enthusiasm of heritage sites about participation; (2) lack of legal and financial support; and (3) lack of technical support and guidance. To further promote GIAHS monitoring globally and better promote dynamic conservation and adaptive management of GIAHS, this paper proposes that FAO should cooperate with various countries to establish a unified, scientific and efficient GIAHS monitoring system, including: (1) clarifying monitoring requirements and formulating monitoring guidelines; (2) improving the management system and establishing incentive mechanisms; (3) promoting multi-stakeholder participation and strengthening technical training.
The Effect of eWOM Source on Purchase Intention: The Moderation Role of Weak-Tie eWOM
Authors: Nofal Reema , Bayram Pelin , Emeagwali Okechukwu Lawrence , Al-Mu’ani Lu’ay
Published: August 2022

Scholars around the world have studied electronic word of mouth (eWOM) heavily in the past decade. However, despite extensive knowledge of the effect of eWOM on consumer behavior, there is still a lack of understanding of how the eWOM source shapes those behaviors. There are many sources of eWOM, the influence of which may have different outcomes when it comes to consumers’ purchase intentions. Moreover, most studies have measured social tie strengths (strong/weak) as one variable. Weak-tie eWOM (W-tie) and strong-tie eWOM (S-tie) are always studied in contrast to each other. The versus characteristics of these two constructs have been considered in almost all studies; however, they may work together via different mechanisms. This study split social ties into two separate constructs, W-tie and S-tie, while adding another source of eWOM (celebrities eWOM), and investigated how W-tie moderated the effect of S-tie and celebrity eWOM on purchase intention, as well as the mediation effect of perceived value/perceived enjoyment on purchase intention. A total of 726 valid responses were analyzed using SPSS and AMOS. The results showed that all direct relationships in the model were supported. Moreover, perceived value mediated only the effect of celebrity eWOM on purchase intentions and did not successfully convey the effect of S-tie on purchase intentions. On the other hand, perceived enjoyment mediated both relationships. W-tie did not moderate the relationship between S-tie and perceived value, perceived enjoyment, or purchase intention. In contrast, W-tie moderated the positive relationship of celebrity eWOM with perceived value, perceived enjoyment, and purchase intention, while it also moderated the positive relationship of perceived value and perceived enjoyment with purchase intention. This research illuminates how different eWOM sources and social ties on social media platforms affect purchase intentions.
Sustainable Fashion and Consumption Patterns in Peru: An Environmental-Attitude-Intention-Behavior Analysis
Authors: Leclercq-Machado Luigi , Alvarez-Risco Aldo , Gómez-Prado Romina , Cuya-Velásquez Berdy Briggitte , Esquerre-Botton Sharon , Morales-Ríos Flavio , Almanza-Cruz Camila , Castillo-Benancio Sarahit , Anderson-Seminario Maria de las Mercedes , Del-Aguila-Arcentales Shyla , Yáñez Jaime A.
Published: August 2022

This study aims to outline the influence of Environmental Attitude (EA) in Purchase Intention (PI) and Purchase Behavior (PB). The Theory of Reasoned Action (TRA) was extended by adding Environmental Concern (EC) and Perceived Environmental Knowledge (PEK) as EA predictors. A total of 396 responses from Peru were analyzed through Partial Least Squares Structural Equation Modeling (PLS-SEM). In the findings, Environmental Attitude acts as a mediator between Environmental Concern and Perceived Environmental Knowledge, and Purchase Intention. Additionally, this actual interrelationship results in a positive relationship with Purchase Behavior. Subjective Norms were not an essential predictor of Purchase Intention, which validates previous studies. Our findings suggest that Peruvian consumers prefer sustainable clothing because they are concerned with and aware of current environmental issues. Consequently, their attitude is shaped based on environmental concern and perceived environmental knowledge, resulting in an increasing intention to buy sustainable clothes, which are aimed at reducing environmental impact. The research findings may support the marketing and selling strategies of firms to show that their brands are green and can generate more interest in current and future customers. The novelty is based on using the partial least squares structural equation modeling (PLS-SEM) technique.
Automatic Assessment of Abdominal Exercises for the Treatment of Diastasis Recti Abdominis Using Electromyography and Machine Learning
Authors: Radhakrishnan Menaka , Ramamurthy Karthik , Kothandaraman Avantika , Premkumar Vinitha Joshy , Ramesh Nandita
Published: August 2022

Diastasis Recti Abdominis (DRA) is a medical condition in which the two sides of the rectus abdominis muscle are separated by at least 2.7 cm. This happens when the collagen sheath that exists between the rectus muscles stretches beyond a certain limit. The recti muscles generally separate and move apart in pregnant women due to the development of fetus in the womb. In some cases, this intramuscular gap will not be closed on its own, leading to DRA. The primary treatment procedures of DRA involve different therapeutic exercises to reduce the inter-recti distance. However, it is tedious for the physiotherapists to constantly monitor the patients and ensure that the exercises are being done correctly. The objective of this research is to analyze the correctness of such performed exercises using electromyogram (EMG) signals and machine learning. To the best of our knowledge, this is the first work reporting the objective evaluation of rehabilitation exercises for DRA. Experimental studies indicate that the surface EMG signals were effective in classifying the correctly and incorrectly performed movements. An extensive analysis was carried out with different machine learning models for classification. It was inferred that the RUSBoosted Ensembled classifier was effective in differentiating these movements with an accuracy of 92.3%.
Circuit Complexity from Supersymmetric Quantum Field Theory with Morse Function
Authors: Choudhury Sayantan , Selvam Sachin Panneer , Shirish K.
Published: August 2022

Computation of circuit complexity has gained much attention in the theoretical physics community in recent times, to gain insights into the chaotic features and random fluctuations of fields in the quantum regime. Recent studies of circuit complexity take inspiration from Nielsen’s geometric approach, which is based on the idea of optimal quantum control in which a cost function is introduced for the various possible path to determine the optimum circuit. In this paper, we study the relationship between the circuit complexity and Morse theory within the framework of algebraic topology, which will then help us study circuit complexity in supersymmetric quantum field theory describing both simple and inverted harmonic oscillators up to higher orders of quantum corrections. We will restrict ourselves to N=1 supersymmetry with one fermionic generator Qα. The expression of circuit complexity in quantum regime would then be given by the Hessian of the Morse function in supersymmetric quantum field theory. We also provide technical proof of the well known universal connecting relation between quantum chaos and circuit complexity of the supersymmetric quantum field theories, using the general description of Morse theory.
Approximate Solutions for a Class of Predator–Prey Systems with Nonstandard Finite Difference Schemes
Authors: Nonlaopon Kamsing , Mehdizadeh Khalsaraei Mohammad , Shokri Ali , Molayi Maryam
Published: August 2022

In this paper, we construct new nonstandard finite difference schemes to approximate a set of positive solutions for the predator–prey model, which contains different functional responses. The organization of the denominator of the discrete derivative and nonlocal approximations of nonlinear terms are employed to design the new schemes. The approach results in significant qualitative improvements in how the numerical solution behaves. We establish that the proposed nonstandard finite difference methods are elementary stable and satisfy the positivity requirement. In addition, the instances of applying PESN methods to some predator–prey systems using the Beddington–DeAngelis and Nicholson–Bailey functional responses are provided here. Finally, some numerical comparisons are presented to illustrate our findings. Our results indicate that the proposed methods are very suitable for the symmetric model of predator–prey.
New Unequal Error Protection Strategy for Image Transmission Based on Bilayer-Lengthened PLDPC Code in Half-Duplex Relay System
Authors: Gao Tian , Xiao Min , Chen Pingping , Gao Diyan
Published: August 2022

To reduce the waste of energy in communications, unequal error protection (UEP) is used to provide asymmetric protection for messages with different levels of importance. This paper proposes new efficient strategies of UEP based on bilayer protograph-based low-density parity check (PLDPC) codes in decoding-and-forward (DF) relay systems. In particular, we jointly utilize source coding and channel coding to design UEP strategies and then save transmission energy. According to the different levels of importance of discrete cosine transform (DCT) coefficients of image and variance statistical characteristics of image sub-blocks, bilayer-lengthened PLDPC codes are exploited to protect the transmitted image information with different importance levels at the half-duplex relay system. In the end, the simulation result shows that the proposed UEP schemes achieve excellent performance gains compared to conventional equal error protection (EEP) scheme. Additionally, the complexity analysis of the UEP strategies is given.
The Au12 Gold Cluster: Preference for a Non-Planar Structure
Authors: Nhat Pham Vu , Si Nguyen Thanh , Anh Nguyen Ngoc Khanh , Duong Long Van , Nguyen Minh Tho
Published: August 2022

The transition point from a two-dimensional (2D) to a three-dimensional (3D) structure in a series of small gold clusters remains a topic of continuing debate. In the present study, coupled-cluster CCSD(T) and DFT calculations are performed to re-examine the relative energies of several low-lying isomers of Au12, aiming to shed new light on this issue. At odds with many previous reports on the preference of a planar di-capped elongated-hexagon structure, the Au12 size is found to energetically prefer a globular cup-like form with C2v symmetry. While DFT results are not able to assign the most stable form of Au12 as the relative energies between the lowest-lying isomers are strongly functional-dependent, coupled-cluster theory calculations point out the preference of a 3D structure for having a D3h symmetry. Such a prediction is further supported by a comparison of the vibrational spectra computed using the revTPSS density functional with the available experimental infrared ones that were previously recorded from the far-IR multiple photon dissociation (FIR-MPD) experiment.
An Improved YOLO Algorithm for Fast and Accurate Underwater Object Detection
Authors: Zhao Shijia , Zheng Jiachun , Sun Shidan , Zhang Lei
Published: August 2022

Due to the abundant natural resources of the underwater world, autonomous exploration using underwater robots has become an effective technological tool in recent years. Real-time object detection is critical when employing robots for independent underwater exploration. However, when a robot detects underwater, its computing power is usually limited, which makes it challenging to detect objects effectively. To solve this problem, this study presents a novel algorithm for underwater object detection based on YOLOv4-tiny to achieve better performance with less computational cost. First, a symmetrical bottleneck-type structure is introduced into the YOLOv4-tiny’s backbone network based on dilated convolution and 1 × 1 convolution. It captures contextual information in feature maps with reasonable computational cost and improves the mAP score by 8.74% compared to YOLOv4-tiny. Second, inspired by the convolutional block attention module, a symmetric FPN-Attention module is constructed by integrating the channel-attention module and the spatial-attention module. Features extracted by the backbone network can be fused more efficiently by the symmetric FPN-Attention module, achieving a performance improvement of 8.75% as measured by mAP score compared to YOLOv4-tiny. Finally, this work proposed the YOLO-UOD for underwater object detection through the fusion of the YOLOv4-tiny structure, symmetric FPN-Attention module, symmetric bottleneck-type dilated convolutional layers, and label smoothing training strategy. It can efficiently detect underwater objects in an embedded system environment with limited computing power. Experiments show that the proposed YOLO-UOD outperforms the baseline model on the Brackish underwater dataset, with a detection mAP of 87.88%, 10.5% higher than that of YOLOv4-tiny’s 77.38%, and the detection result exceeds YOLOv5s’s 83.05% and YOLOv5m’s 84.34%. YOLO-UOD is deployed on the embedded system Jetson Nano 2 GB with a detection speed of 9.24 FPS, which shows that it can detect effectively in scenarios with limited computing power.
Risk-Based Maintenance Optimization for a Subsea Production System with Epistemic Uncertainty
Authors: Liu Ying , Ma Liuying , Sun Luyang , Zhang Xiao , Yang Yunyun , Zhao Qing , Qu Zhigang
Published: August 2022

The lack of operation and maintenance data brings difficulties to traditional risk assessment based on probability methods. Therefore, experts are invited to evaluate the key performance indicators related to system risk. These evaluation results are usually described by ambiguous language, so they have epistemic uncertainty. Uncertainty theory is a branch of mathematics used to model experts’ degrees of belief. The uncertain measure has duality, that is, some symmetry, which means that the sum of the uncertain measure of an event and the uncertain measure of its complementary set is equal to 1. Therefore, the risk occurrence time of each basic event evaluated by experts is modeled by the uncertain variable in this article. Then, the risk assessment method of systems with epistemic uncertainty is proposed based on an uncertain fault tree analysis. Furthermore, two risk-based maintenance optimization models for systems with epistemic uncertainty are established. In particular, the leakage risk assessment method and the two risk-based maintenance optimization models for a subsea production system are considered, and the optimization results are given. The optimization results can help practitioners to warn of the leakage risk and make scientific maintenance decisions based on expert knowledge, so as to extend the service life of subsea production systems.
Using a Strongly Intense Observable to Study the Formation of Quark-Gluon String Clusters in pp Collisions at LHC Energies
Authors: Belokurova Svetlana , Vechernin Vladimir
Published: August 2022

Within the framework of the model with quark-gluon strings (color flux tubes) as sources, the properties of the strongly intense variable Σ, which characterizes the correlations between the number of particles in two observation windows separated in rapidity, are studied. It is shown that, in pp collisions at LHC energies, string fusion effects leading to the formation of string clusters have a significant effect on the behavior of this observable. The experimentally observed changes in this variable with the initial energy and centrality of the pp collision can only be explained by taking into account the formation of string clusters consisting of an increasing number of merged strings. It is demonstrated that the study of the behavior of the Σ observable as a function of the rapidity distance between the centers of the observation windows and the width of these windows with variable experimental conditions using different energies and centralities of pp-collisions makes it possible to extract the parameters of string clusters from the experimental data.
Relationships among Physical Activity, Pain, and Bone Health in Youth and Adults with Thalassemia: An Observational Study
Authors: Fung Ellen B. , Goldberg Elijah K. , Bambot Sakina , Manzo Raquel , Lal Ashutosh
Published: August 2022

Patients with thalassemia (Thal) engage in less physical activity than non-Thal populations, which may contribute to pain and osteoporosis. The purpose of this study was to assess relationships between physical activity, pain, and low bone mass in a contemporary sample of patients with Thal. Seventy-one patients with Thal (50 adults ≥18 years, 61% male, 82% transfusion-dependent) completed the Brief Pain Inventory Short Form and validated physical activity questionnaires for youth and adults. Nearly half of the patients reported daily somatic pain. Using multiple regression, after controlling for age and gender, sedentary behavior was positively associated with pain severity (p = 0.017, r2 = 0.28). Only 37% of adult participants met CDC recommendations for physical activity. Spine BMD Z-score was higher (−2.1 ± 0.7) in those who met activity guidelines compared to those who did not (−2.8 ± 1.2, p = 0.048). A positive relationship was observed between self-reported physical activity (hours/week) and hip BMD Z-score in adults with Thal after controlling for transfusion status and sedentary activity time (p = 0.009, r2 = 0.25). These results suggest that decreased physical activity and increased sedentary behavior contribute to low bone mass, which may be related to pain severity in some patients with Thal. Studies focused on increasing physical activity may contribute to improved bone health and reduced pain in patients with Thal.
Searching for Blockers of Dengue and West Nile Virus Viroporins
Authors: Lahiri Hiya , Arkin Isaiah T.
Published: August 2022

Flavivirus infections, such as those caused by dengue and West Nile viruses, emerge as new challenges for the global healthcare sector. It has been found that these two viruses encode ion channels collectively termed viroporins. Therefore, drug molecules that block such ion-channel activity can serve as potential antiviral agents and may play a primary role in therapeutic purposes. We screened 2839 FDA-approved drugs and compounds in advanced experimental phases using three bacteria-based channel assays to identify such ion channel blockers. We primarily followed a negative genetic screen in which the channel is harmful to the bacteria due to excessive membrane permeabilization that can be relieved by a blocker. Subsequently, we cross-checked the outcome with a positive genetic screen and a pH-dependent assay. The following drugs exhibited potential blocker activities: plerixafor, streptomycin, tranexamic acid, CI-1040, glecaprevir, kasugamycin, and mesna were effective against dengue virus DP1. In contrast, idasanutlin, benzbromarone, 5-azacytidine, and plerixafor were effective against West Nile Virus MgM. These drugs can serve as future antiviral therapeutic agents following subsequent in vitro and in vivo efficacy studies.
Manifestation of SARS-CoV-2 Infections in Mink Related to Host-, Virus- and Farm-Associated Factors, The Netherlands 2020
Authors: Wolters Wendy J. , de Rooij Myrna M. T. , Molenaar Robert Jan , de Rond Jan , Vernooij J. C. M. , Meijer Paola A. , Oude Munnink Bas B. , Sikkema Reina S. , van der Spek Arco N. , Spierenburg Marcel A. H. , Hakze-van der Honing Renate W. , van der Poel Wim H. M. , Koopmans Marion P. G. , Stegeman J. Arjan , Smit Lidwien A. M. , Augustijn-Schretlen Marieke , Velkers Francisca C.
Published: August 2022

SARS-CoV-2 outbreaks on 69 Dutch mink farms in 2020 were studied to identify risk factors for virus introduction and transmission and to improve surveillance and containment measures. Clinical signs, laboratory test results, and epidemiological aspects were investigated, such as the date and reason of suspicion, housing, farm size and distances, human contact structure, biosecurity measures, and presence of wildlife, pets, pests, and manure management. On seven farms, extensive random sampling was performed, and age, coat color, sex, and clinical signs were recorded. Mild to severe respiratory signs and general diseases such as apathy, reduced feed intake, and increased mortality were detected on 62/69 farms. Throat swabs were more likely to result in virus detection than rectal swabs. Clinical signs differed between virus clusters and were more severe for dark-colored mink, males, and animals infected later during the year. Geographical clustering was found for one virus cluster. Shared personnel could explain some cases, but other transmission routes explaining farm-to-farm spread were not elucidated. An early warning surveillance system, strict biosecurity measures, and a (temporary) ban on mink farming and vaccinating animals and humans can contribute to reducing the risks of the virus spreading and acquisition of potential mutations relevant to human and animal health.
Non-Invasive Sampling in the Aspect of African Swine Fever Detection—A Risk to Accurate Diagnosis
Authors: Walczak Marek , Szczotka-Bochniarz Anna , Żmudzki Jacek , Juszkiewicz Małgorzata , Szymankiewicz Krzesimir , Niemczuk Krzysztof , Pérez-Núñez Daniel , Liu Lihong , Revilla Yolanda
Published: August 2022

African swine fever remains one of the most economically important and dangerous diseases of the Suidae family. Until now, neither a safe vaccine nor a treatment against ASF has been available, which is why prevention of the disease involves biosecurity measures and early recognition based on accurate diagnosis. Nowadays, different strategies for ASF detection are discussed to reduce both animal suffering and the costs of ASF surveillance. This article aims to indicate the risk, with regard to non-invasive sampling, for the detection of ASFV. In this study, we analyzed data from three independent animal trials, in the framework of the detection of positive samples in different matrices (blood, sera, oral and rectal swabs) collected from nineteen domestic pigs infected with similar doses but under different scenarios, including different ASFV strains or routes of infection. Genetic material of ASFV was found in all matrices, but detection occurred earlier in the blood samples than in the oral and the rectal swabs. Furthermore, analyses revealed that at relevant sampling timepoints, PCR-positive blood samples were detected more frequently and reached higher percentages (up to 100% during fever) than oral and rectal swabs. Moreover, mean Ct values in blood samples collected from animals infected with virulent strains were significantly lower than in oral and rectal swabs, ensuring a higher probability of ASFV detection. High Ct values and occasional shedding in all tested matrices, in the cases of animals infected by an attenuated ASFV-strain, showed that blood sampling may be necessary to confirm the presence of anti-ASFV antibodies in sera. This study showed that during veterinary surveillance, blood sampling (for both PCR and serological analyses) is essential for the accurate diagnosis of ASF and provides the highest probability of detection of the disease.
Psychological and Psychiatric Events Following Immunization with Five Different Vaccines against SARS-CoV-2
Authors: García-Alanis Mario , Morales-Cárdenas Marisa , Toapanta-Yanchapaxi Liz Nicole , Chiquete Erwin , Núñez Isaac , Ceballos-Liceaga Santa Elizabeth , Carbajal-Sandoval Guillermo , Toledo-Salinas Carla , Mendoza-Hernández David Alejandro , Scheffler-Mendoza Selma Cecilia , Ortega-Martell José Antonio , Carrillo-García Daniel Armando , Hernández-Valdivia Noé , Gutiérrez-Romero Alonso , Galnares-Olalde Javier Andrés , Flores-Silva Fernando Daniel , Díaz-Ortega José Luis , Reyes-Terán Gustavo , López-Gatell Hugo , Cortes-Alcalá Ricardo , Pérez-Padilla José Rogelio , Arauz Antonio , García-Grimshaw Miguel , Valdés-Ferrer Sergio Iván
Published: August 2022

Background: Despite the high number of vaccines administered against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) worldwide, the information on the psychological/psychiatric adverse events following immunization (AEFI) with these newly developed vaccines remains scarce. Objective: To describe the frequency of psychological/psychiatric symptoms among recipients of five different anti-SARS-CoV-2 vaccines and to explore the factors associated with their development reported in the nationwide Mexican registry of AEFI against SARS-CoV-2. Methods: Descriptive study of all the psychological/psychiatric symptoms, including anxiety, panic attacks, insomnia, and agitation reported to the Mexican Epidemiological Surveillance System from 21 December 2020 to 27 April 2021, among adult (≥18 years old) recipients of 7,812,845 doses of BNT162b2, ChAdOx1 nCov-19, rAd26-rAd5, Ad5-nCoV, or CoronaVac. The factors associated with their development are determined by multivariate regression analysis. Results: There were 19,163 AEFI reports during the study period; amongst them, 191 (1%) patients had psychological/psychiatric symptoms (median age of 41 years, interquartile range of 32–54; 149 [78%] women) for an observed incidence of 2.44 cases per 100,000 administered doses (95% confidence interval [CI] 2.12–2.82), 72.8% of psychiatric AEFIs were reported among recipients of BNT162b2. The median time from vaccination to symptom onset was 35 min (interquartile range: 10–720). Overall, the most common psychological/psychiatric symptoms were anxiety in 129 (67.5%) patients, panic attacks in 30 (15.7%), insomnia in 25 (13%), and agitation in 11 (5.7%). After adjusting for the confounding factors, the odds for developing psychological/psychiatric symptoms were higher for those concurrently reporting syncope (odds ratio [OR]: 4.73, 95% CI: 1.68–13.33); palpitations (OR: 2.47, 95% CI: 1.65–3.70), and dizziness (OR: 1.59, 95% CI: 1.10–2.28). Conclusion: In our population, psychological/psychiatric symptoms were extremely infrequent AEFIs. No severe psychiatric AEFIs were reported. Immunization stress-related responses might explain most of the detected cases.
Inefficient Induction of Neutralizing Antibodies against SARS-CoV-2 Variants in Patients with Inflammatory Bowel Disease on Anti-Tumor Necrosis Factor Therapy after Receiving a Third mRNA Vaccine Dose
Authors: López-Marte Paola , Soto-González Alondra , Ramos-Tollinchi Lizzie , Torres-Jorge Stephan , Ferre Mariana , Rodríguez-Martinó Esteban , Torres Esther A. , Sariol Carlos A.
Published: August 2022

Management of inflammatory bowel disease (IBD) often relies on biological and immunomodulatory agents for remission through immunosuppression, raising concerns regarding the SARS-CoV-2 vaccine’s effectiveness. The emergent variants have hindered the vaccine neutralization capacity, and whether the third vaccine dose can neutralize SARS-CoV-2 variants in this population remains unknown. This study aims to evaluate the humoral response of SARS-CoV-2 variants in patients with IBD 60 days after the third vaccine dose [BNT162b2 (Pfizer-BioNTech) or mRNA-1273 (Moderna)]. Fifty-six subjects with IBD and 12 healthy subjects were recruited. Ninety percent of patients with IBD (49/56) received biologics and/or immunomodulatory therapy. Twenty-four subjects with IBD did not develop effective neutralizing capability against the Omicron variant. Seventy percent (17/24) of those subjects received anti-tumor necrosis factor therapy [10 = adalimumab, 7 = infliximab], two of which had a history of COVID-19 infection, and one subject did not develop immune neutralization against three other variants: Gamma, Epsilon, and Kappa. All subjects in the control group developed detectable antibodies and effective neutralization against all seven SARS-CoV-2 variants. Our study shows that patients with IBD might not be protected against SARS-CoV-2 variants, and more extensive studies are needed to evaluate optimal immunity.
PHYSICO-CHEMICAL BASIS FOR OBTAINING LOW-CARBON SPONGE ALLOYS
Authors: Grishin Oleksandr , Nadtochij Anzhela , Petrenko Vitaliy , Kyrychok Vladyslav
Published: August 2022

The alloying materials obtained by the technology of solid-phase reduction have higher physical and chemical parameters in comparison with traditional ferroalloys. A thermodynamic analysis of the Cr-O-C system in the temperature range of 1273-1673K was carried out, which makes it possible to clarify the possible ways of developing carbothermic reduction of Cr2O3 with the formation of stable and unstable solid products at various C/O ratios in the charge. The thermodynamic and structural shifts caused by the presence of iron in the reacting system are analyzed. The available possibilities for reducing the carbon concentration in solid reduction products are considered. A regression equation was obtained using the factor analysis method, which determines the influence of various parameters on the carbon content in the product. The kinetics of reduction of Cr2O3 in the presence of iron has been experimentally studied. The features of the effect of iron introduced into the charge mixture in the metallic form and in the form of oxide on the development of the process at different temperatures and at individual stages of Cr2O3 reduction are revealed. Ideas about the mechanism of the influence of Fe on the rate regularities and the depth of chromium reduction from the oxide phase are developed.
RARE EARTH METALS IN ROLLED CAST IRON
Authors: Ivanova Lyudmyla , Kolotilo Yevhen , Miroshnichenko Hanna
Published: August 2022

The effect of the additive value of three rare earth metals individually (lanthanum, cerium, and yttrium) on the crystallization parameters of cast iron was studied. The study was carried out using a differential scheme for measuring cooling temperatures using the ФПК -59 device. As a result of the conducted studies, a similar effect of experimental rare earth metals on the crystallization parameters of rolled cast iron was shown. Additives of rare earth metals, which led to the greatest changes in the crystallization parameters and the formation of spherical graphite inclusions in the structures of modified cast irons, were different. When modifying cast iron melt to produce spherical graphite, yttrium must be added less than cerium or lanthanum.
ON THE RESISTANCE TO ABRASIVE WEAR OF CHROMIUM-MANGANESE ALLOYS IN DIFFERENT ENVIRONMENTS
Authors: Kovzel Maksym , Parusov Eduard
Published: August 2022

Research in the direction of increasing the service life of iron-based alloys, which operate in difficult conditions, has been carried out. The possibility of using chromium-manganese alloys (cast iron) as a material has been proven. The material is characterized by a lower manufacturing cost compared to traditional ones (high-chromium cast iron and nikorin-type alloy) due to a decrease in the content of chromium, nickel and vanadium. The results of studies of the influence of the chemical and phase composition, structure and hardness of the metal matrix on the abrasive wear of chromium-manganese alloys after the crystallization of castings were presented. Using X-ray diffraction analysis, carbides Me7C3-(Cr, Mn, Fe)7C3, cementite, ferrite and austenite in the structure of chromium-manganese alloys were identified. With an increase in the content of carbon and manganese, the amount of austenite in the matrix increases. An alloy that contains 3.1% C, 13.1% Cr and 15.7% Mn is the most resistant to wear in various abrasive media. This is due to the hardness of the metal matrix, the amount of austenite-carbide eutectic based on Me7C3 carbide, and deformation-phase transformations that occurred during the tests.
STUDY OF INFORMATIVITY OF THE INVERSION CRITERION IN TESTING THE HYPOTHESIS ABOUT ACCIDENTALITY IN PROBLEMS CONTROL AND CYBER SECURITY
Authors: Malaychuk Valentin , Klymenko Svitlana , Astakhov Dmytro
Published: August 2022

A study of the inversion criterion in the control and cybersecurity problems for measurement samples was conducted. The sensitivity to correlation within the samples of experimental measurements is determined and it is proved that this criterion can be applied to random variables with both symmetric and asymmetric distribution laws. Research of an estimation of informativeness of criterion at their application on short samples by computer processing of experimental measurements are carried out.
STRUCTURE AND PROPERTIES OF THIN SHEET STEEL 08ПС AFTER SKIN-ROLLING
Authors: Kotova Tetiana , Kovzel Maxim
Published: August 2022

The requirements of standards for quality indicators of rolled products are increasing. Relevant is the saving of operating costs in the manufacture of a thin sheet. Skin rolling is one of the key operations in the technological process of production of hot-rolled sheets for cold stamping. In order to improve the quality of thin-sheet rolled products, it is important to develop an effective skin rolling technology. In this work, the structure and properties of hot-rolled thin-sheet low-carbon steel 08пс after skin pass at a separately located mill are studied. It is shown that as a result of processing, the plasticity of the metal increases and a uniform structure is formed over the sheet section. It has been established that hot-rolled sheet metal in terms of quality meets the requirements for cold-rolled products in accordance with ДСТУ 2834-94. It is possible to replace an expensive cold-rolled sheet with a cheaper, but of the same quality, hot-rolled sheet. As a result, an increase in labor productivity, a decrease in the metal consumption coefficient, and savings in electricity and natural gas are achieved.
WAYS TO IMPROVE THE TECHNOLOGY OF PRODUCTION OF HOT-EXTRUDED TUBES HIGH-ALLOYED STEELS AND TITANIUM BASED ALLOYS
Authors: Frolov Yaroslav , Berezos Volodymyr , Medvedev Michael , Bobukh Oleksandr , Samsonenko Andriy
Published: August 2022

Sustainable development of human civilization as well as responsible manufacturing require new approaches to metallurgical production chains. A major part of that requirements lies in plane of solid-state treatment of high alloyed steels and Ti-based alloys. In this work we pay an attention to the development of production of tubes of these alloys, which are widely used in energy and chemical engineering. The aim of research – an excellent microstructure, what is the warrant of the set of mechanical properties attractive for customers. The aim is reached through the creation of the deformation mode, which includes wall-thickness and diameter strain distribution, thermal balance along the treatment and auxiliary operation. That mode consists of the solutions, providing measurable considering of current chemical composition of the incoming billet. Applied approach results in fine adjustment of the solid-state treatment to the potential of chemical composition of the billet.
DESIGN AND CREATION OF EXTENDED SPECIAL CHARGERS
Authors: Huliaiev Andrii , Fyl Ruslan , Melnyk Volodymyr
Published: August 2022

Current data on seized and destroyed explosive devices are given. The design and creation of shells of elongated special charges using the system of automated design and 3D printing for the needs of the National Police of Ukraine are considered. Data on the disadvantages and advantages of using an overhead charge and hydro-cumulative devices (shells of elongated special charges) are given. A comparison of the traditional manufacture of shells of elongated special charges and using 3D printing. The basic requirement for the created shells of the extended special charges is defined. Material for 3D printing, its advantages are considered. The results of researches of shells of the extended special charges on influence of climatic factors according to GOST are resulted. Conclusions are made on the advantages of the technology, the obtained samples of shells of extended special charges, over traditional technologies.
INFLUENCE FACTORS ON THE FORMATION OF MECHANICAL PROPERTIES AND STRUCTURE OF STEEL FOR MANUFACTURE OF RAILWAY AXES
Authors: Babachenko Oleksandr , Тоhobytska Daria , Balakhanova Tetiana , Kononenko Hanna
Published: August 2022

The characteristics of two industrial data sets with chemical composition and mechanical properties of rough railway axles steel samples of ОС and EA1N grades are studied. The main difference between the samples was the methods of manufacturing the original continuously cast blanks. Steel brand ОС is a converter manufacturing method without undergoing a vacuum operation. EA1N steel is smelted in an electric furnace with a degassing process in a vacuum cleaner. In each sample, two arrays were identified with different reduced and increased values of toughness. Analysis of differences in chemical composition was performed using Student's t-test. It was found, that when choosing the optimal chemical composition of steel for the manufacture of critical parts of the railway, it is necessary to take into account the method of steel production, raw materials and technological features of the metallurgical enterprise, as steel of even close chemical composition may have a completely different structure.
SIMULATION OF VAPN OPENING IN SLAG OF THE STEEL STEELING IN EAF OXIDATION PERIOD
Authors: Kamkin Volodymyr , Mishalkin Anatolii
Published: August 2022

An important problem in improving the slag mode of steelmaking in EAF is the substantiation of the rational component and chemical composition of fluxes that form the slag phase, the properties of which provide high performance and an energy-efficient mode of electric steelmaking. The kinetics of dissolution of lime in the slag of the oxidation period of steelmaking in EAF was studied by introducing a high-temperature furnace model (40 kg; LPZ-67 with periclase lining) onto the surface of the bath using limestone fractions of 3 and 10 mm with different degrees of firing.
Literary Scar: The Marina Shooting
Authors: S Veerapandiyan
Published: August 2022

Histories tend to be forgotten or blurred over time. Even if society fails to preserve them, literature is a treasure trove of records. Finding them and reclaiming history becomes part of justice for the people of a region. In that way, this review presents the incident of firing on fishermen during the process of renovating the Marina beach in Chennai. It also shows the various stages of development since the start of the refinement project. The situation in which the fishermen lose their livelihood due to the scheme and the struggle raised by the fishermen is analysed in detail. The police's excessive power and various losses, such as the deaths of fishermen, are restored here. As there is no literary contribution to this event in any other literature, the main sources in this article are the literary records of Palamalai and Inkulab (revolution) poems. This study reveals the effects of the fishermen on the plan to rehabilitate the marina beach and the poetry as a socio-historical document.
An InN/InGaN quantum dot nonlinear constant phase element
Authors: Peng Yingchun , Xie Lingyun , Wang Jialin , Qin Ling , Nötzel Richard
Published: August 2022

InN/InGaN quantum dots (QDs) are found to establish a nonlinear constant phase element (CPE) response over a wide frequency range, measured by electrochemical impedance spectroscopy (EIS). The intrinsic surface donors together with the near-surface electron accumulation layer form the fractional capacitor. The magnitude of the impedance and the phase angle depend on the QD structural parameters and contact area. Importantly, they consistently change with applied voltage, constituting the nonlinear CPE response. A noise-filtering DC voltmeter with the phase angle as readout is proposed.
VESTIBULINIO NEURONITO ETIOLOGIJA IR JO RYŠYS SU COVID-19 INFEKCIJA
Authors: Šulskutė Raminta , Šulskus Giedrius , Čikotienė Aistė
Published: August 2022

Vestibulinis neuronitas – ūmus, užsitęsęs galvos svaigi­mas, su sutrikusia pusiausvyros funkcija, kuriam nebū­dingas neurologinių simptomų pasireiškimas ir klausos sutrikimas. Vestibulinis neuritas yra aštuntojo galvinio nervo vestibulinės dalies uždegimo pasekmė, dažniausiai pasireiškianti galvos svaigimu, pykinimu ir pusiausvyros sutrikimu. Šios ligos gydymas yra simptominis, dažniau­siai pasveikstama savaime. Vestibulinio neuronito etio­logija vis dar neaiški, tačiau manoma, kad jo atsiradimo pagrindinė priežastis yra virusinė infekcija. Nors dar nėra pagrįsta, tačiau galvojama, kad vestibulinis neuronitas gali būti sukeliamas latentinės herpes simplex viruso reaktyvacijos vestibulinėse ganglijose. Mokslinėje li­teratūroje galima rasti pavienių klinikinių atvejų, apra­šančių COVID-19 sukeltą vestibulinį neuronitą, tačiau nėra atlikta šią sąsają pagrindžiančių mokslinių tyrimų.
LAIMO LIGOS KLINIKINIS PASIREIŠKIMAS
Authors: Pakeltytė Donata
Published: August 2022

Laimo liga skirstoma į tris stadijas – ankstyvąją lokalią, ankstyvąją išplitusią ir lėtinę. Pirmajai stadijai būdinga migruojanti eritema, kartu gali būti ir į gripą panašių simptomų. Ankstyvoji išplitusi stadija dažniausiai pasi­reiškia neurologiniais simptomais, artritu, širdies ir akių pažeidimais. Lėtinės stadijos simptomai gali išryškėti praėjus mėnesiams ar net metams nuo užkrėstos erkės įsisiurbimo. Paskutiniajai stadijai būdingas artritas, cen­trinės nervų sistemos pažeidimai, lėtinis atrofinis akro­dermatitas bei kiti simptomai. Dėl nespecifinių Laimo ligos simptomų susirgimo atpažinimas apsunkintas. Šio tyrimo tikslas – apžvelgti mokslinėje literatūroje apra­šomą Laimo ligos klinikinį pasireiškimą.
موتيف الامام الحسين عليه السلام في شعر فاروق جويده
Authors: عموري نعيم
Published: August 2022

ظهرت ظاهرة الموتيف في النقد الأدبي الحديث و في الدرس البلاغي الجديد و لها أصول في النقد و البلاغة العربيين، و ذاک الأصل هو ما يشبه التکرار في البلاغة، فتکرار الفکرة الواحدة عند شاعر أو أديب ما نعني بها الموتيف، في هذا البحث درست شخصية الإمام الحسين ابن علي ابن ابي طالب-عليهما السلام- في أشعار الشاعر المصري المعاصر فاروق جويدة؛ حيث رکّز الشاعر علی شخصية الحسين(ع) و کفاحه و عطائه للأمة الاسلامية و ينادي الشاعر بأنّ العالَم اليوم أحوج إلی الحسين(ع) من أيّ زمن مضی، فالحسين(ع) رمز للحرية و العدالة و الکرامة و التضحية و النهوض و عدم الانصياع للجبابرة، الشاعر يأتي بموتيف الحسين(ع) و يقصد بهذه الشخصية العظمية الفکرة و تتمثّل الفکرة بالکفاح و النهضة و الحرية و عدم التذلذل للطغاة، ومن النتائج التي توصلت إليها أنّ الشاعر يحنُّ إلی الحسين(ع) و إلی نهضته و دعا الناس في ثورتهم الی التمسک بفکر و نهج الحسين(ع) في الواقع لجأ فاروق جويدة إلی تکرار فکرة الحرية و ذلک لبيان الاضطهاد و الظلم الذي وقع علی الشعب المصري.
New Historicism in George Gissing’s The Odd Women
Authors: Al-abbasi Zahid Habeeb
Published: August 2022

The Odd Women is a novel written by the English novelist George Robert Gissing in 1883. Gissing as a novelist was interested in feminist movement. Indeed, he supported women in his novel and based on his experience of the society in the 19th century, he wrote this novel.  The novel illustrates how millions of women were considered as strange or odd because they were without pair or husband because they had to choose between their desires and their principles in life. Furthermore, Gissing attempts to portray to us the nature of women in relation to marriage and sexuality, and he depicts this through his characters in the novel.  The novel gives vivid images to several issues dominant in the nineteenth century, such as women suffering the humiliation of being elderly and unmarried in the Victorian period, sexual anarchy and sex oppression, and women challenging the most deeply held attitudes and ideologies of the culture. In this paper, I am studying George Gissing in order to explain how sexuality and marriage were regarded in the Victorian period.
مخلفات الصرف الصحي وأثرها في تلوث مياه نهر الديوانية
Authors: عبد حسون رافد موسى
Published: August 2022

لا يوجد
العوامل المؤثرة في استدامة الموارد الطبيعية وأثرها على التنمية الريفية في ريف ناحية العباسية
Authors: الجبوري هاتف لفته , كريم عتاب يوسف
Published: August 2022

لا يوجد
Assessment of the Level of Health Anxiety among College Students in a Private Higher Educational Institution during COVID-19
Authors: David Janella Rome , Quiroz Bernadeth , Manlulu Irish Vibeth , Paule Trishia Lance , Calaguas Noriel
Published: August 2022

Background: Worldwide, people who were exposed to the virus reported heightened health anxiety compared to the individuals with the absence of exposure related to the COVID-19 during the pandemic. Young adults reported higher levels of health anxiety when compared to other groups. To a certain extent, health anxiety serves a protective role until it becomes perseverate and dysfunctional. The researchers aim to describe the level of anxiety of college students by utilizing the COVID-19 Anxiety Syndrome Scale to form a foundation for programs and policies that would address dysfunctional health anxiety. Methods: The researchers used a quantitative, non-experimental, descriptive online survey research design to describe the level of COVID-19 health anxiety among college students in a private higher educational institution in Central Luzon, Philippines. Results: A total of 378 college students completed the survey. Analysis revealed that participants checked for symptoms of COVID-19 and were worried about possibly contracting COVID-19 for more than 7 days within two weeks (M=3.9; SD=1.5). It also revealed that the participants avoided situations that put them at risk for COVID-19 at a similar frequency (M=4.1; SD=0.4). Conclusion: The study reveals the sampled college students manifested COVID-19 anxiety for more than 7 days in a 2-week timeframe. This means that the students spend a significant amount of their time, in a two-week timeframe, worrying, checking, and avoiding situations that may put them at risk for COVID-19. These anxiety-induced behaviors may hinder the accomplishment of their activities of daily living or productive pursuits.