bluuebunny/crossref_metadata_2025 huggingface dataset:
Green Synthesis, Characterization and Electrical Properties of Iron Doped Vanadium Oxide for Strain Gauges
Authors: Kishan Chand T. R. , Kalpana H. M. , Lalithamba H. S.
Published: December 2022

A series of vanadium oxide (V2O5) nanoparticles containing small varying concentrations of iron (Fe) were synthesized using green protocol to test its suitability towards strain gauges. The morphological, structural, transmission spectral and the dielectric properties of the synthesized nanoparticles were characterized using SEM, HRTEM, XRD, FTIR and the LCR meter respectively. The structural analysis results depict a transformation from amorphous to orthorhombic cubic phased crystalline structure. The morphological data denote an improvement in the appearance of the samples without any cracks. A better electronic transition due to high activation energy was observed from the slight shift of the transmission spectral peaks towards the lower wave number. The improved conductivity from 5.37 to 12.51 S/m in conjunction with the better temperature characteristics, specially incase of 15 wt% Fe:V2O5 contributes to the enhanced sensitivity of the samples. The overall results from the characterization emphasize the synthesized nanoparticle’s remarkable attributes towards the fabrication of thin film strain gauges.
Influence of Hot Forging and Heat Treatment on Mechanical Properties of D-Series Cutting Tools
Authors: Shivashankar H. S. , Siddaligaprasad T. S. , Ganiger Basavaraj , Chandrashekharaiah T. M.
Published: December 2022

In this experimental work D2 and D3 type cutting tool samples have hot forged and heat treated. The belt a drop hammer of weight 500N was employed to press forge the selected steel tool materials. In the forging operation the materials were heated to 1100°C-1200°C. The structures of hot forged and heat treated tool samples were observed through metallurgical microscope. The hardness and impact strength of the tool materials were studied using Vickers micro hardness tester and Charpy impact testing machine. The wear resistance of the tool materials was assessed using pin on disc wear tester at constant sliding speed (1.675m/s) and sliding distance (1005m) at room temperature condition. The hardness, impact strength and wear resistance of the 20% forged and heat treated D2 tool and D3 tool materials were found comparatively better and the same was discussed under the background of microstructural changes.
Mechanical Characterization of Hybrid Polymer Composite for Marine Application
Authors: Raheem Abdul , Subbaya K. M. , . Harish , Vikram C. K.
Published: December 2022

An investigative work was conducted to examine the tensile, flexural and impact strength of carbon fiber reinforced vinyl ester composites filled with different proportions (0, 0.5, 1, 1.5 and 2) of graphitic carbon nitride (g-C3N4) and silicon nitride (Si3N4) filler. Composites were fabricated by hand layup method. Results showed an increase in tensile strength of g-C3N4 and Si3N4 particles content by 1% and beyond which the strength decreased. With the addition of 1wt% of g-C3N4 and Si3N4 in carbon fiber reinforced vinyl ester composites, the flexural strength increased to 16% and the tensile strength increased by 10%. The eroded surface of specimen was observed under scanning electron microscope and the results are reported. Incorporation of nano fillers in hybrid polymer composite will enhance the mechanical properties. Hence hybrid C-V extensively used in marine applications.
Impact of Stock Splits on Stock Returns and Liquidity of the Selected Firms : A Study from NSE
Authors: Hemanth Kumar K. P. , Shashidhar R. , Paramashivaiah P.
Published: December 2022

Stock splits are used as a tool to bring down the current share price in a market in order to attract all kinds of investors in the market and to make it affordable especially to the small investors. During this course it is not expected to gain any abnormal returns but practically it will most of the times as it supports the signaling hypothesis theory. Corporate actions are just cosmetic events where do not have any impact on firms investments or capital structure, so there is a scope for analyzing the impact of splits on the shareholders return. The purpose of this paper is to evaluate the abnormal returns and to analyze the changes in the liquidity position of the pre-split and post-split announcement. Study has considered 10 samples which are gone for stock splits during the year 2016-2020 and also should be trading under Nifty 50 and derivative segment too. The results were highlighting that the spot market and derivative markets are correlated and moves parallel but just immediately after the spot is near month contract; there it is observed that there is a negative abnormal returns on the event announcement day where investors were not able to cope up the information rapidly.
The role of the fibrinolytic system laboratory markers in the assessment of the cerebral small vessel disease severity
Authors: Khutorov Dmitrii N. , Startseva Olga N. , Tikhomirova Olga V. , Zybina Natalia N.
Published: December 2022

Background: Small vessel disease (SVD) is a common brain disease causing about 40% of all dementias and about 25% of ischemic strokes, which makes important the study of its pathophysiology and the search for its biomarkers. A number of studies have shown a significant role of endothelial dysfunction and nonspecific inflammation, as well as of some individual parameters of hemostasis disorders in the development of SVD.
Aim: To identify the role of the laboratory markers of fibrinolytic system in the assessment of the severity of white matter lesions in patients with SVD.
Materials and methods: This single center cross-sectional non-controlled observational study included 117 patients with dyscirculatory encephalopathy (chronic brain ischemia), with a mean ( SD) age of 57.7 11.5 years. Laboratory tests of the fibrinolytic system, endothelial dysfunction, markers of inflammation and for an integral assessment of plasma hemostasis were performed in all patients, including XIIa-dependent fibrinolysis, levels of plasminogen, alpha2-antiplasmin, plasminogen activator inhibitor 1 (PAI-1), fibrinogen, von Willebrand factor (vWF) and activity of blood coagulation factor VIII (FVIII), highly sensitive C-reactive protein and parameters of the thrombodynamics assay. In all the patients, brain magnetic resonance imaging was performed with the assessment of the white matter lesions by the Fazecas scale.
Results: Depending on the identified neuroimaging SVD markers (assessed with the Fazecas scale), the patients were divided into the SVD group (n = 54) and no-SVD group (n = 63). Those with SVD were older than those without (65 9 vs 51 10 years; p 0.001), had higher prevalence of arterial hypertension (p 0.001), diabetes mellitus (p = 0.029) and past thrombotic events (p 0.001). The SVD patients, compared to those without SVD, had a higher time of XIIa-dependent fibrinolysis (7.6 2.9 vs 6.5 1.7 min, p = 0.032), higher alpha2-antiplasmin levels (111 [95117] vs 105 [95111]%, p = 0.016) and higher clot density (D) (22789 [2056726411] vs 20627 [1832422650] U, p 0.001), although the parameters were within the reference ranges. As far as the thrombodynamics is concerned, the SVD group had higher values for all test parameters, as well as higher levels of the inflammation and endothelial dysfunction markers. Increased time of XIIa-dependent fibrinolysis was associated with higher probability of periventricular and subcortical leukoareosis grade 2 by the Fazecas scale (odds ratio 1.31 [1.071.60], p = 0.009), including an increase in the size and number of gliosis areas. Higher plasminogen levels were associated with a lower probability of leukoareosis by the Fazecas scale (odds ratio 0.97 [0.950.98], p 0.001).
Conclusion: The severity of fibrinolytic and hemostatic abnormalities correlates with the severity of brain SVD, thus forming the hypofibrinolytic and prothrombotic status of the patients with this disorder.
Physical education teachers’ attitudes towards the use of the Internet in education
Authors: Jawarneh Randa Saleh , AL-Momania Mohammad Omar
Published: December 2022

The use of the Internet in the educational process is one of the factors that help to consolidate students’ knowledge and acquire new skills based on the exchange of experiences that take place via email or open group dialogues. The study aimed to identify the attitudes of physical education teachers in Jordan towards the use of the Internet in the teaching–learning process. The descriptive approach was used, in addition to the use of the questionnaire as a tool for the study. The data collection instrument was applied to the study sample of 328 teachers and educators in Jordan in the second academic year 2021–2022. After carrying out the necessary statistical treatment, the study concluded that there is a presence of positive attitudes among teachers towards the use of the Internet in the educational process. In addition, there is a disparity in the use of the Internet in the educational process among physical education teachers in Jordan.

Keywords: Educational process, Internet, physical education, teachers;
Creativity as a complex form of creation and thinking
Authors: Stanic Goranka
Published: December 2022

Creativity is the highest form of human creation, thought and action. We have known it since the earliest beginnings of human existence. Freed, stereotyped and elevated above the primitive level, the human mind encounters creativity. It encompasses intellectual thinking, problem solving and challenges, and with its homologous heritage, raises man as an individual and the entire civilisation to a level higher than the very beginnings. The aim of this research is to generate a design that can be followed for creativity. Information is needed for creativity. However, the classic form of information and creation has been replaced by computer technology. It is almost impossible to follow the course of development of the branch and the progress of all human activities. In a sea of new information and data, we are losing the thread and have to opt for a narrowly specialised area or areas that we monitor. A large selection of communications and ideas slowly leads us into chaos. As much as it seems to us that the channels of creativity and opportunities for innovation are enriched, we also encounter the problem of overload. Creativity in â€˜designâ€™ translates into creating software with many capabilities, and a true designer is a programmer who designs features and a program for a particular branch of design. The goal of design is not commercialism, but quality and progress, making life easier, instead of creating imaginary desires and needs for the offered product.

 

Keywords: Design, creativity, computer design, functionality.
PSYCHOPHYSICAL DISADAPTATION AS A FACTOR OF INITIATION OF THE CONSUMPTION OF PSYCHOACTIVE SUBSTANCES IN THE STUDENT ENVIRONMENT
Authors: Mulik Alexander B. , Yusupov Vladislav V. , Nazarov Nikita O. , Ulesikova Irina V. , Popov Sergey F. , Shatyr Yulia A.
Published: December 2022

The aim of the work was to determine the relationship between indicators of psychophysical maladjustment, individual functional status and consumption of psychoactive substances among students. The study involved 137 students of state universities in Arkhangelsk. Identification of the experience of using psychoactive substances was carried out using questionnaire and blank methods of retrospective self-assessment of the study participants. Determination of psychophysical maladaptation was carried out on the basis of a combination of psychological and psychosomatic symptoms of stress reactions and anxiety-depressive disorders. Stress resistance was assessed by analyzing the level of general nonspecific reactivity of the organism. The psychological status was determined by a combination of indicators of accentuations and personality traits that characterize the temperament and character of the individual. It was revealed that the regular use of alcohol (2 times a week or more) among students, in the overwhelming majority of cases, is associated with psychophysical maladjustment against the background of low human stress resistance. The level of smoking and samples of narcotic substances among students are positively, linearly related to the frequency of alcohol consumption. The psychological conditionality of the formation of anxiety-depressive and acute stress disorders simultaneously provokes the demand for psychoactive substances. A comprehensive assessment of the functional and psychological indicators of predisposition to psychophysical maladjustment can provide a prediction of the risk of chemical addiction formation among students.
Management of a traumatic avulsion fracture of the occipital condyle in polytrauma patient in Korea: a case report
Authors: Ham Chang Hwa , Kwon Woo-Keun , Kim Joo Han , Park Youn-Kwan , Kim Jong Hyun
Published: December 2022

Avulsion fracture of the occipital condyle are rare lesion at craniovertebral junction. It is often related to high-energy traumatic injuries and show diverse clinical presentations. Neurologic deficit and instabilities may justify surgical treatment. However, the integrity of neurovascular structures is undervalued in the current literatures. In this case report, we described a 26-year-old female patient with avulsion fracture of occipital condyle following a traffic accident. On initial presentation, her Glasgow Coma Scale was 8. She presented with fracture compound comminuted depressed, on the left side of her forehead with skull base fracture extending into clivus and occipital condyle. Her left occipital condyle showed avulsion injury with displacement deep into the skull base. On her computed tomography angiography, the displaced occipital condyle compressed on the sigmoid sinus resulting in its obstruction. While she was recovering her consciousness during her stay in the hospital, the lower cranial nerves showed dysfunctions corresponding to Collet-Sicard syndrome. Due to high risk of vascular injury, the patient was conservatively treated for the occipital condyle fracture. On the 4 months postdischarge follow-up, her cranial nerve symptoms practically recovered, and the occipital condyle showed signs of fusion without further displacement. Current literatures focus on neurologic deficit and stability for the surgical decisions. However, it is also important to evaluate the neurovascular integrity to assess the risk of its manipulation as it may result in fatal outcome. This case shows, an unstable avulsion occipital condyle fracture with neurologic deficit can be treated conservatively and show a favorable outcome.
Anatomy of attacks on IoT systems: review of attacks, impacts and countermeasures
Authors: Msgna Mehari
Published: December 2022

Aim: The Internet of Things is a disruptive technology that converts physical objects into a constant source of information. Internet-connected devices bridge the gap between the physical and virtual worlds through their data-generating set of sensors. Due to the large-scale proliferation of Internet-of-Things systems into practically every sector of modern life, they have also become the centre of growing cybersecurity threats and attacks. This is exacerbated by the connectivity between different kinds of devices and the lack of standardisation to govern them. The majority of papers on the security of the Internet of Things discuss one attack or threat at a time, which could lead to a fragmented understanding of their overall security posture. The aim of this paper is to provide a concise review of attacks on an Internet-of-Things system, their impacts on IoT assets and possible countermeasures. Methods: We review the available layered representation and functional components of the Internet of Things. We then identify the system's assets and review the literature on IoT attacks. We categorise these attacks into groups using common classification criteria and map them against the assets they target. We also identify the possible impacts that these attacks could have on an IoT system. We explore a number of security controls that could be deployed to detect or prevent the attacks. Finally, we evaluate these countermeasures against the assets they protect and the impacts they intend to prevent. Results: To clearly show the security of IoT systems, we identify assets, categorise the different attacks and map them to the different components of an IoT system. Further, we identify the different countermeasures and evaluate their effectiveness against IoT assets and attacks. Conclusion: The paper provides a clear and concise description of IoT functional components and computational models. It also presents an anatomy of attacks on such a system. In addition, the main assets of a typical IoT system are identified and elaborated. The different types of attacks that can be launched in an IoT environment are categorised and mapped against the different functional components. Further, the different assets are identified and countermeasures are evaluated on their effectiveness to protect them.
La perception sociale de l'adaptation des espaces littoraux aux effets du changement climatique : le projet Adapto par le Conservatoire du littoral
Authors: HILBERT Myriam
Published: December 2022

Le projet Adapto a pour objet d’expérimenter diverses méthodes de gestion souple du trait de côte sur dix sites pilotes du Conservatoire du littoral. Un des axes du projet consiste à interroger, sur site, les perceptions et avis des usagers et habitants sur leurs ressentis et leur compréhension des choix de gestion, réalisés ou envisagés à l’avenir. De l’échelle globale du changement climatique à l’échelle locale d’un enjeu spécifique de gestion du littoral, les usagers et habitants ont des réponses variées. La gestion souple du trait de côte est un domaine peu, voire pas connu du grand public. L’information sur les raisons, moyens et objectifs de cette gestion ressort comme le socle de la confiance que les habitants seraient prêts à lui accorder.
Quality Assessment of Sludge from Filter Washings in Swimming Pool Facilities
Authors: Łaskawiec Edyta
Published: December 2022

Swimming pools are examples of water-intensive facilities, where solutions for reducing economic and environmental costs are increasingly frequently searched. One of the solutions is the recovery of water from wastewater, including from washings obtained through the process of rinsing filter bed. The study objective was the qualitative and quantitative assessment of post-coagulation sludges, the main pollutant found in the washings. During the analyses, assessment of the sedimentation capabilities of the sludges was performed (gravitationally), particle size distribution was assessed (particle size distribution analyzer) and assessment of phytotoxicity with the use of plant indicators in short-term tests was performed (Lemna minor, Lepidium sativum, Sinapis alba, Raphanus sativus). The samples were collected from two independent circulations, which differed in terms of capacity and type of coagulant used. The tested post-coagulation sludges were characterized by high content of total suspended solids: in samples from Circulation 1 from 251 to 128 mg/l, in Circulation 2 from 489 to 228 mg/l. However, the sedimentation processes enabled significant separation of sludges. The hydrolyzed coagulant contributed to the improvement of sedimentation capabilities of sludges. Despite the fact that in many samples low sludge concentrations favored stimulation of plant growth, the post-coagulation sludges can constitute a hazard to plant growth, particularly in the long-term perspective.
A Fatal Case of Native Valve Endocarditis With Multiple Embolic Phenomena and Invasive Methicillin-Resistant Staphylococcus Aureus Bacteremia: A Case Report From the Maldives
Authors: Shafeeq Ali , Imad Hisham Ahmed , Azhad Ahmed , Shareef Migdhaadh , Najmy Mohamed Shaneez , Siraj Mohamed Mausool , Sunil Mohamed , Rafeeu Rimsha , Moosa Aishath Sofa , Shaheed Ahmed , Ngamprasertchai Thundon , Matsee Wasin , Aung Pyae Linn , Nguitragool Wang , Shioda Tatsuo
Published: December 2022

Infective endocarditis (IE) is a life-threatening condition caused by infection within the endocardium of the heart, and commonly involves the valves. The subsequent cascading inflammation leads to the appearance of a highly friable thrombus that is large enough to become lodged within the heart chambers. As a result, fever, fatigue, heart murmurs, and embolization phenomena may be seen in patients with IE. Embolization results in the seeding of bacteria, and obstruction of circulation, causing cell ischemia. Of concern, bacteria with the potential to gain pan-drug resistance, such as methicillin-resistant Staphylococcus aureus (MRSA), are increasingly being identified as the causative agent of IE in hospitals and among intravenous drug abusers. We retrospectively reviewed de-identified clinical data to summarize the clinical course of a patient with MRSA isolated using an automated blood culture system. At the time of presentation, the patient showed a poor consciousness level, and the calculated Glasgow scale was 10/15. A high-grade fever with circulatory shock indicated an occult infection, and a systolic murmur was observed with peripheral signs of embolization. This case demonstrated the emerging threat of antimicrobial resistance in the community, and revealed clinical findings of IE that may be helpful to clinicians for the early recognition of the disease. The management of such cases requires a multi-specialty approach, which is not widely available in small island developing states like the Maldives.
3DSSCN: A Sentiment Analysis Model for Short Video Based on 3D-Dense Network
Authors: silva Michele , Kruger Heitor , Vieira Muhammad , Stellato Carlos
Published: December 2022

In recent years, with the development of social media, people are more and more inclined to upload text, pictures and videos on the platform to express their personal emotions, thus the number of short videos is increasing and becoming the first choice for people to socialize. Unlike the traditional way, people can convey their personal emotions and opinions through media other than words, such as video images, etc. for external information. Therefore, the expression and analysis of emotions is not only through text, but also through the analysis of emotional needs in images and videos, and the research scholars have customized products for individual users. Compared with pure text content, video information can more intuitively express users' happiness, anger and sorrow, thus short video-related applications have gained more and more popularity among Internet users in recent years. However, not all short videos on social networking sites can accurately express users' emotions, and related text information can more accurately assist sentiment analysis and thus improve accuracy. However, short video sentiment analysis based on video frame images is inaccurate in some scenarios, such as when expressing tears of joy, the sentiment expressed by the user's facial expression and voice are different, which will cause errors in the analysis of sentiment. As a result, researchers began to consider multimodal sentiment analysis to reduce the impact of the above scenarios on short video sentiment analysis. This paper focuses on proposing a sentiment analysis method for short videos. We first propose a residual attention model to make full use of the information in audio to classify the emotions contained in them. Then the text information in the dataset is classified by feature extraction. The key to extract features from text information is not only to retain the semantic information of the text, but also to explore the potential emotional information in the text, so as to ensure the integrity of the text information features. The experiments show that the sentiment analysis model proposed in this paper is more superior than the baselines.
Diversity and Parasitic Load of Freshwater Fish of the Shipstern Peninsula, Sarteneja, Corozal District, Belize, Central America from Recent Collections and Historical Archives
Authors: Ram Jeffrey , Vasquez Adrian , Trejo-Martinez Jorge
Published: December 2022

: Belize is located within the Mesoamerican biodiversity hotspot and is an important link between critical biodiverse habitats in Central America. Despite considerable research on biodiversity in marine environments of Belize, research in freshwater environments is limited, with the most recent checklists having been published in obscure, mostly unavailable references more than 20 years ago.Belize is currently experiencing serious degradation of some of its major freshwater resources such as the New River in the northern part of the country. These unique habitats are increasingly threatened by agro-urban development, invasive species and erratic climatic events. The economically important barrier coral reef is also experiencing impacts from the degraded freshwater watersheds that empty into the sea near the reefs. This work addresses the paucity of documentation of the freshwater fishes of Belize, particularly for the Shipstern Peninsula area. The Shipstern Peninsula is a unique region in northern Belize, adjacent to the southern border of Mexico and the northeastern end of the Corozal Bay Wildlife Sanctuary. This paper reports on fish collected in 2015, with comparisons to historical data in surveys published in 1990, 1993, and 1997. We report on 12 genera/species collected in 2015 and provide molecular barcode data on several, which was not available in previous publications. Floridichthys polyommus, a new observation for the Shipstern Lagoon, and Dajaus monticola, a revised name and new observation for the Inland Blue Hole, were confirmed by barcodes. This update is vital to the continued management of freshwater environments in Belize, and especially for the Shipstern Peninsula and its important habitats held in trust for perpetuity for the Belizean people.
DOS CASOS PRÁCTICOS DE CLASIFICACIÓN ARANCELARIA QUE GENERARON CONFLICTO ANTE LA ADUANA DE CIUDAD JUÁREZ, CHIHUAHUA, DURANTE LA PANDEMIA DE LA COVID-19
Authors: Delfín Aguilar Brenda Berenice , Díaz Vázquez Elva Nydia
Published: December 2022

La clasificación arancelaria sin duda es la parte fundamental dentro del comercio exterior, se puede decir que es la columna vertebral de dicha operación, ya que es necesario determinar la fracción arancelaria de cada producto para conocer los aranceles a pagar, así como las regulaciones y restricciones no arancelarias que dichos productos deban cumplir para su importación a nuestro país. Es por ello que en el presente artículo se dan a conocer dos casos que generaron conflicto en la Aduana de Ciudad Juarez, Chihuahua, México.
Feasibility Study of Recrosslinkable Preformed Particle Gels for Natural Gas Injection Profile Control
Authors: Al Brahim Ali , Eriyagama Yugandhara , Bai Baojun , Schuman Thomas
Published: December 2022

Recrosslinkable preformed particle gel (RPPG), a preformed particle gel (PPG) of which particles can bond together to form a strong bulk gel system after being placed inside the target formation, has been successfully applied to control conformance problems for waterflooding projects. However, no research has been conducted about whether RPPG is feasible in improving gasflooding performance in mature reservoirs. The study presents a systematic evaluation of acrylamide (AM) and 2-acrylamide-2-methylpropane sulfonate acid (AMPS)-based RPPG including phase stability under different gel-gas kinetics and plugging performance to natural gas and water. Different experimental apparatuses were designed to quantify and visualize the RPPG phase stability under static and dynamic gel-gas interactions. The RPPG phase stability was evaluated under a different range of injection pressure, gas exposure time, and swelling ratio (SR). Also, the RPPG stability was compared to the in-situ gel system hydrolyzed polyacrylamide crosslinked with chromium acetate [HPAM/Cr(III)], which has been applied in oil fields to control gas injection conformance. The RPPG plugging efficiency was evaluated using open fractured cores with different apertures. The results showed that the RPPG was stable under both static and dynamic gel-natural gas interactions and was stable when being exposed to an acidic environment with an insignificant total percentage weight loss (<3%). Additionally, the strength of the RPPG was further improved with the longevity of the gas exposure. Furthermore, different from the in-situ gel system HPAM/Cr(III), which exhibited a high degree of dehydration under natural gas and exhibited substantial syneresis under acidic conditions, the microstructure of the RPPG remained stable after the dynamic gas exposure. The results of the coreflooding experiments demonstrated that the RPPG had excellent plugging efficiency, which was closely related to the SR and the fracture aperture. This is the first study where a polymer gel system has been systematically assessed through varied testing methodologies using natural gas as opposed to other studies where nitrogen (N2) was used to simulate natural gas behavior. The robustness of the RPPG system makes it a viable candidate for improving the gasflooding processes in mature reservoirs dominated by conformance problems such as void space conduits (VSCs), fractures, and high-permeability channels.
Azimuthal Investigation of a Fractured Carbonate Reservoir
Authors: Bouchaala F. , Mohamed Aala A. I. , Jouini M. S. , Bouzidi Y. , Ali M. Y.
Published: December 2022

Oil production and enhanced oil recovery in carbonate reservoirs in Abu Dhabi, UAE, are largely affected by fracture systems that control the fluid path and the permeability of reservoirs. Most fracture properties, such as fracture orientations and density, are obtained by interpreting petrophysical data acquired at the wellbores, whereas fracture properties between wells are typically derived from nonzero offset seismic data. However, deriving fracture properties from seismic data is challenging, as it requires a robust methodology and a careful seismic processing procedure. In the current case study, we used the azimuthal amplitude vs. offset (AVAz) method on 3D seismic data acquired in onshore Abu Dhabi, to generate maps of fracture orientation and density in a carbonate reservoir. A sophisticated processing series was carefully performed to increase signal-to-noise ratio (SNR) and preserve seismic amplitudes. The main parameters controlling the AVAz method were investigated and optimized before being applied to the 3D seismic data. The reservoir has a high fracture density in the lower regions, but a low fracture density in the upper parts, indicating a weaker anisotropy. The resulting dominant fracture directions span from north-northwest/south-southwest to north-northeast/south-southwest, as well as from northwest/southeast to east/west, which is consistent with the primary fracture orientations determined from the interpretation of fullbore formation microimager (FMI) data acquired at well locations. These fracture systems are the result of the Late Cretaceous obduction of the Semail ophiolite, which was oriented east/west and northeast/southwest, followed by the south/north to southwest/northeast trending Late Oligocene-Miocene continent-continent collision of the Arabian and Central Iran plates along the Zagros orogenic front.
Core-shell encapsulation of PMHS@EPDM onto BF surface for strengthening and toughening of BF/HDPE composites
Authors: Wen Tao , Zhang Xinxiang , Ou Sainan , Olonisakin Kehinde , Xiao Fuchuan
Published: December 2022

Bamboo flour/high-density polyethylene (BF/HDPE) composite was strengthened and toughened simultaneously by the surface encapsulation of BF with poly(methylhydrogen)siloxane(PMHS) and Ethylene Propylene Diene Monomer (EPDM). An elastic PMHS@EPDM shell was fabricated on BF surface by successively spraying PMHS/hexane and EPDM/hexane solutions onto BF, based on the dehydrogenation and addition reaction of PMHS with BF and EPDM. It was found that surface encapsulation of wood at high PMHS content would simultaneously increase the strength and toughness of BF@PMHS/HDPE composite. The tensile strength and impact strength were increased by 54.2% and 9.9%, respectively as PMHS content was 3.3%. Furthermore, an encapsulation of BF@PMHS with EPDM further increased the strength and toughness by 5.1% and 14.7%. Compared with the pristine BF/plastic composites (BPC), the tensile, flexural and impact strength of modified BPC increased by 62.1%, 28.0% and 26.1%. The changes in the microstructure of the interface between BF and HDPE as a function of encapsulation of PMHS and EPDM and the relationship between chemical structure, microstructure and mechanical properties were discussed in detail. This work gave a novel MAH-free method for strengthening and toughening BF/HDPE or wood flour/high-density polyethylene (WF/HDPE) composites.
Effects of adjuvant application of corticosteroid and ozone after ultrasound-guided puncture and lavage for the treatment of rotator cuff calcifific tendinitis: study protocol for a non-inferiority randomized controlled trial
Authors: Dong Jing , Zhang Lan , Jia Haibin , Zhu Yuanjiang , Xiang Rui , Li Peiyu
Published: December 2022

Background: Steroid injection after percutaneous irrigation of calcific deposits is a common method for treatment of rotator cuff calcifific tendinitis(RCCT). However, steroid may prevent calcification resorption and cause potential irreversible damage to tendons. Recent studies have confirmed the positive effects of ozone injection in shoulder tendinopathies,but the application in RCCT has not been reported.Thus, our study aims to evaluate the non-inferiority of ozone versus steroid injection.
Methods: This is a prospective, randomized, parallel control and non-inferiority trial. A total of 100 patients with unilateral symptomatic RCCT will be enrolled and randomised in a 1:1 ratio to two groups: ultrasound-guided injection with ozone or corticosteroid.The primary outcome is the numeric rating scale for pain(NRS) at 1 week and 3 months following the procedure. Secondary outcomes include multi- dimensional evaluation of shoulder disability and quality of life improvement,degree of calcification absorption after treatment and the number of multiple treatments.
Discussion: The results of this study will provide short-term and long-term evidence for ozone treatment of RCCT in relieving pain or improving shoulder function.
Trial registration: Chinese Clinical Trial Registry ChiCTR2200063469.Registered on 7 September 2022.
Effects of remote ischemic conditioning on conditioned pain modulation and cardiac autonomic modulation in women with knee osteoarthritis: placebo-controlled randomized clinical trial protocol
Authors: Biral Taíse Mendes , Cavina Allysiê Priscilla de Souza , Junior Eduardo Pizzo , Filho Carlos Alberto Toledo Teixeira , Vanderlei Franciele Marques
Published: December 2022

Background

It is estimated that over 240 million people worldwide have osteoarthritis, which is a major contributor to chronic pain and central changes in pain processing, including endogenous pain modulation. The autonomic nervous system plays a crucial role in the pain regulatory process. One of the main mechanisms of remote ischemic conditioning is neuronal signaling from the preconditioned extremity to the heart. This study aims to analyze the acute effect of remote ischemic conditioning on local pain, conditioned pain modulation and cardiac autonomic control in women with knee osteoarthritis and to see if there is a correlation between them.

Methods

Randomized, placebo-controlled, double-blind clinical trial. Participants will be divided into: i) remote ischemic conditioning in which an adapted cuff will be positioned in the proximal region of the thigh of the lower limb with the greatest complaint of knee pain and a protocol consisting of four cycles of total ischemia, followed immediately by four cycles of five minutes of vascular reperfusion, totaling 40 minutes, will be performed; ii) placebo remote ischemic conditioning that differs from the previous one in relation to ischemia of 10 mmHg. The main outcomes evaluated will be the conditioned pain modulation in which the test stimulus will be performed through the pressure pain threshold and the conditioning stimulus through the cold pressor test and cardiac autonomic modulation through heart rate variability. Comparisons will be performed using generalized linear mixed models fitted to the data. For correlation, the Pearson or Spearman test will be used depending on the normality of the data. All analyzes will assume a significance level of p < 0.05.

Discussion

the results of this study are believed to show a new perspective for the interaction between pain processing and cardiovascular systems; in addition to providing the therapist and patient with better conditions to ensure greater cardiovascular safety in the use of the intervention and trigger knowledge of an acute response for future chronic intervention strategies that aim to be used in the clinical environment as another strategy that can help, within the multimodal approach, for the management of knee osteoarthritis.
Trial registration number: ClinicalTrials.gov, (NCT05059652). Registered on 27 September 2021; Last Update 19 April 2022.
Optimization of absenteeism indicators for a face recognition based syndromic surveillance system: a longitudinal study, China, September 2021 to June 2022
Authors: Wang Wei Ye , Huang Xiao Liu , Yang Zhen
Published: December 2022

Background
Although smart attendance can only collect all-cause absenteeism currently, whichis conductive to the modernization of school-oriented syndromic surveillance system (SSS).It is of great significance to optimize indicators of all-cause absenteeism based on smart attendance.
Aim
To choose an appropriate time standard for absenteeism, and explore more effective indicators for the face-recognition-based SSS (FRSSS).
Methods
Two primary schools in Hangzhou, China participated in the pilot study. Grade 1-2 (DARL), 3-6 (DARH), and school-wide (DARX) all-cause-absenteeism reported by FRSSS, and all-cause (DARY) and sickness absenteeism (DARZ) reported by school physicians, were daily collected from September 1, 2021, to June 24, 2022, and these five indicators' effectiveness of epidemic detection were compared by correlations, time series, and control charts.
Results
The time standard of absenteeism was "≥ 24 hours" for DARY and DARZ, while "≥ one hour" for DARX, DARL and DARH. DARY and DARZ only were 32.6% and 25.2% of DARX. The correlation coefficient between DARY and DARZ was 0.843 (P<0.001) in school A and 0.933 (P<0.001) in school B. In school A, Yoden indexes of DARL, DARH, DARX, DARY and DARZ were 83.0%, 85.0%, 80.6%, 78.2% and 80.4%, respectively. In school B, Yoden indexes of these five indicators were 89.3%, 91.0%, 83.9%, 76.8% and 81.0%, respectively.
Conclusions
The effectiveness of outbreak detection for the smart attendance based indicators could be raised to a considerable level by setting reasonable time standard and adopting multi-level indicators. It is feasible and effective to popularize smart attendance in school-oriented SSSs.
Pre-Hospital Delays among Patients with Acute Coronary Syndrome in the Russian Federation: a multicentre prospective observational cohort study (the AMIR Study)
Authors: Bates Katie , Schirmer Henrik , Kontsevaya Anna , Bobrova Natalia , Leon David A. , McKee Martin
Published: December 2022

Objective To describe total pre-hospital delays (symptom onset to admission), patient delay (symptom onset to calling for help), and transport delay (calling for help to admission) experienced by patients with acute coronary syndrome (ACS) in Russia and to identify factors associated with longer delays.
Methods A prospective observational cohort study of ACS patients with myocardial infarction recruited in both PCI and non-PCI hospitals across 13 regions and multiple levels of the health system in Russia.
Results Median total pre-hospital delays in our study was 5.1 hours, median patient delay was 1.5 hours and median transport delay was 2.1 hours. Patient delay did not differ by age and sex, although having a STEMI and certain symptom presentations, including severe pain, reduced delays. Transport delays were markedly reduced in those transported by Emergency Medical Services (EMS) and taken directly to the hospital of definitive treatment (rather than one closer but unable to offer Percutaneous coronary intervention (PCI)).
Whilst transport delays were reduced in those using EMS, just half of patients using EMS had a transport delay of less than 2 hours (first medical contact to admission). Among all patients taken directly to hospital by EMS, 70% were STEMI patients. Of these STEMI patients, 78% had a transport delay of 2 hours or more. Among these patients, only 16.0% received thrombolysis in the ambulance. As expected, regional differences were apparent with all types of delay, with greatest variation found in transport delays.
Conclusions Delays are currently longer than the ESC guidelines for STEMI patients and other severe cases., Reducing patient delay will reduce overall delays. Transport delays are inevitable in many regions of Russia but better triage of patients, increased use of EMS, and early thrombolysis in EMS, particularly for STEMI patients facing excessive transport delays, will reduce delays and buy time before PCI.
The relationship between metabolic associated fatty liver disease and thyroid nodule: A Cross-sectional Study in China
Authors: Xiao Jun , Tian Shen , Wu Juan , Xu Zhou , Li Hao , Li Shu , Liang Xin-yu , Chen Yu-ling , Adhikari Vishnu Prasad , Song Jing-yu , Ma Chen-yu , She Rui-ling , Li Zhao-xing , Ran Liang , Kong Ling-quan
Published: December 2022

Background: The relationship between metabolic associated fatty liver disease (MAFLD) and thyroid nodule (TN) is unknown, despite the obese individuals showed a greater risk of nonalcoholic fatty liver disease（NAFLD）and thyroid cancer compared to the normal BMI individuals. . This is a cross-sectional study examining the association between TN and MAFLD in healthy Chinese population undergoing simultaneous abdominal and thyroid ultrasonography.
Methods： A total of 78077 healthy individuals with complete biochemical, thyroid and liver ultrasonography data from the Quality Control Center of Health Examination in Chongqing, China were included in the study. TNs were classified into malignancy risk levels of 5 different categories in accordance with Thyroid Imaging Reporting and Data System(TI-RADS). We investigated the association between MAFLD and TNs by binomial logistic regression analyses，and multinomial logistic regression analyses were performed to test the independence of associations between TNs or different TI-RADS categories of TNs and MAFLD.
Findings: The prevalence of TN, MAFLD and combined TN with MAFLD were 30.4% (female: 36.7%, male: 26%), 26.9% (female: 13.4%, male: 36.4%) and 8.8% (female: 10.1%, male: 6.8%), respectively. The males with MAFLD had a higher risk of TN after adjustment for age, gender, blood pressure and some hepatic and renal function indicators, males with MAFLD had a higher risk of TN (OR=1.108 ,95%CI: 1.054-1.165，P<0.001)and TN of TI-RADS≥4A (OR=1.231 ,95%CI：1.158-1.308，P<0.001) compared to males without MAFLD; Furthermore, with stratification on the basis of BMI, only non-obese men with MAFLD had a higher risk of TN (OR=1.100 ,95%CI：1.016-1.191，P=0.019) and TN of TI-RADS≥4A (OR=1.213, 95%CI：1.099-1.340，P<0.001). However, no statistical risk of TN or TN of TI-RADS≥4A was observed in females with MAFLD.
Conclusion: The prevalence of MAFLD and TN is high in Chinese healthy population with difference between males and females; The association between TN or TN of TI-RADS≥4A and MAFLD is only observed in non-obese males.
Clinical and economic impact of pneumonia and acute respiratory infection related with influenza vaccination in diabetic patients or patients with chronic obstructive pulmonary disease in Colombia, 2013-2016
Authors: Dario Londoño , Fernando Valderrama José , Ludy Parada , Marco Acosta , Alejandra Taborda
Published: December 2022

Background
Influenza is a public health problem and has important outcomes in at-risk populations such as children, pregnant women, chronic patients, and the elderly. The influenza vaccine has demonstrated to be effective in these groups and is indicated in the Colombian health policy. Chronic patients with highly prevalent diseases in middle and late adulthood such as type 2 diabetes mellitus (DM) and chronic obstructive pulmonary disease (COPD) require special attention for influenza vaccination. The aim was: assess the frequency of hospitalizations and consultations related to respiratory diseases, as well as number of deaths due to pneumonia in subjects with DM or COPD, comparing those who received the influenza vaccine against those who did not receive it retrospectively over the years 2013 to 2016, and the economic impact thereof for the health system in Colombia.
Methodology:
An analysis of a retrospective cohort from 2013 to 2016 of diabetic or COPD patients was performed, assessing national information on annual vaccination coverage, and the vaccinated and unvaccinated populations were adjusted through a Propensity Score Matching (PSM) for each chronic disease, the frequency of hospitalizations, consultations due to respiratory (any etiology) and mortality rates for pneumonia. The main source of information was the Individual Health Services Provision Records (RIPS), vaccination data from the Expanded Program on Immunization (EPI) and mortality data from the National Administrative Department of Statistics (DANE). The process of analysis was validated by the Ministry of Health and Social Protection.
Results
There was a reduction of about 50% in the number of pneumonia hospitalizations of vaccinated chronic patients with DM and COPD compared to unvaccinated patients, which translates into lower economic impact costs, with potential savings of about USD $1.1 to $2.3 million for COPD, and between USD $265 thousand and USD $504 thousand for DM.
Conclusion
Vaccination against influenza in chronic patients with DM or COPD avoids hospitalizations and deaths from pneumonia, which translates into significant potential savings for the Colombian health system.
Southern Himalayas rainfall as a key driver of interannual variation of pre-monsoon aerosols over the Tibetan Plateau
Authors: Zhao Chun , Liu Weichen , Xu Mingyue , Feng Jiawang , Du Qiuyan , Gu Jun , Leung L. , Lau William
Published: December 2022

The Tibetan Plateau (TP) is one of the most climate sensitive regions around the world. Aerosols imported from adjacent regions reach its peak during the pre-monsoon season and play a vital role in the TP environment. However, the strong interannual variation in aerosols transported to the TP has not been fully understood. Here, we show that the interannual variability of pre-monsoon aerosols transported to the TP is influenced more by rainfall over the southern Himalayas than near-surface wind. Rainfall modulates fire events and biomass burning emissions and reduces aerosols over the TP by wet scavenging. Contrary to the role of wind in increasing aerosol transport, the positive correlation between wind and aerosols in the TP reported in previous studies is contributed by the negative interannual correlations between wind and rainfall and between rainfall and fire events over the southern Himalayas. This study highlights the co-variability of wind and rainfall and their confounding impacts on aerosols in the southern Himalayas and over the TP. With pre-monsoon rainfall projected to increase in adjacent regions of southern TP, aerosol transport to the TP may be mitigated in the future.