bluuebunny/crossref_metadata_2025 huggingface dataset:
Online Voting System Using Block Chain
Authors: Sowmya Mandala , Reddy Mandadi Dileep , Kumar Kanakam Shiva , Reddy Kasireddy Saketh
Published: April 2023

Abstract: New opportunities to create new kinds of digital services are being provided by blockchain. Although research on the subject is still in its early stages, it has largely concentrated on the technical and legal issues rather than making use of this novel idea and developing advanced digital services. In order to develop a new electronic voting system that could be used in local or national elections, we will make use of the open source Blockchain technology. The Blockchain-based system will be safe, dependable, and anonymous, and it will contribute to a rise in voter turnout and public confidence in their governments. In order to be accessible to voters while being guarded against outside influences preventing votes from being cast or preventing a voter's ballot from being tampered with, an e-Voting system must have enhanced security
Providing Statistical Methods for Industrial Development in Surkhandarya Region
Authors: Tokhirovna Toshaliyeva Saodat , o'g'li O'ktamov Sunnatullo Azamat
Published: April 2023

Annotation: This article provides information on the development of light and food industries in the Surkhandarya region, as well as practical examples.
Ways to Increase the Ability to Develop the Production Forces of the Regions
Authors: Xudoyberdiyevich Xurramov Eshmamat
Published: April 2023

Annotation: The article deals with the problems and tasks that should be solved in order to develop the regional economy and the growing role of regional competitiveness and innovative potential of the region in the context of globalization.
Uçuk Tedavisinde Kullanılmak Üzere Antiviral Etkin Madde İçeren Dudak Balmı (Lip Balm) Formülasyonunun Geliştirilmesi
Authors: CENGİZ Rumeysa Nur , GÜLBAĞ PINAR Sıla
Published: April 2023

Amaç: Herpes simpleks labialis (uçuk) tedavisinde kullanılmak üzere ‘Asiklovir’ etkin maddesi içeren dudak balmı formülasyonunun geliştirilerek, mevcut tedavilerdeki bazı olumsuzlukların giderilip, uyunç sorunlarının ortadan kaldırılması ve ekonomik yöntemlerle kolay hazırlanışa sahip yeni bir formülasyonun tedaviye kazandırılmasının yanı sıra geleneksel majistral hazırlama yöntemlerine değer katılması amaçlanmıştır.
Materyal-Metot: Asiklovir etkin maddesi ile kakao yağı, balmumu, lanolin ve karnauba mumu olmak üzere dört çeşit sıvağ ve çeşitli yardımcı maddelerin eşliğinde supozituvar hazırlama yöntemlerinden biri olan eritme metodu kullanılarak, 4 farklı sıvağdan oluşan 3 farklı formülasyon ve her bir formülasyondan 20 adet dudak balmı geliştirilmiştir. Son 2 sıvağ ile tüm denemelere rağmen kullanıma uygun bir formülasyon hazırlanamaması sebebiyle bu iki sıvağ kombine edilerek yeni bir formülasyon oluşturulmuştur. Her bir formülasyon tipinden oluşturulan 20 adet dudak balmı üzerinde morfolojik kontroller, ağırlık sapması kontrolü, erime derecesi kontrolü, kırılma ve mekanik dayanıklılık tayini gibi kontroller gerçekleştirilmiştir.
Bulgular: Her bir formülasyon tipi üzerinde gerçekleştirilen kontroller sonucu tüm formülasyonların tekdüze bir ağırlığa sahip oldukları, morfolojik olarak homojen dağılım gösterdikleri, erime derecelerinin insan dudak yüzey sıcaklığından yakın derece fazla olduğu bulguları elde edilmiş, fakat kırılma ve mekanik dayanıklılık kontrolünde birbiriyle uyumlu sonuçlara ulaşılamamıştır.
Sonuç: Sonuç olarak en optimum özellik gösteren formülasyon tipinin kakao yağıyla hazırlanan formülasyon olduğuna karar verilmiş, günlük hayatta kullanım kolaylığı sunan, kozmetiği iyi, hoş kokulu, antiviral özellik gösteren dudak balmı formunda bir formülasyon elde edilmiştir.
Study of Neutrosophic Magnified Translation on Incline Algebra
Authors: Manokaran Surya , Prakasam Muralikrishna
Published: April 2023

The concept of magnified translation is studied in Neutrosophic set which is a segregation of mf (membership function) is known as t(truth)mf, i(indeterminate)mf, and f(falsity)mf which has been applied in incline algebra sub - structures and raises with a name called neutrosophic incline substructures are interlinked with the new frame of (nmt) neutrosophic magnified translation. Further, some more engrossing outputs such as homomorphic image, preimage and cartesian product on this neutrosophic magnified translation of incline substructure are investigated.
HYPOTHESIS OF QUANTUM ENTANGLEMENT AND FRACTAL SPACE THEORY
Authors: Yefremov A. P.
Published: April 2023

The cardinal differences in the theoretical description of classical and quantum particles, the contradictions of the probabilistic (Copenhagen School) and deterministic (De Broglie - Bohm theory) interpretation of quantum mechanics, and the features of entangled quantum states are briefly discussed. It is assumed that the strange properties of the entangled pair can be explained by the localization of particles not in 3D physical space, but in the domain of a fractal space arising in the process of purely mathematical derivation of the Schrodinger and Pauli equations.
ON LEIBNIZ’S RELATIONISM
Authors: Erekaev V. D.
Published: April 2023

The article analyzes the basics of G. Leibniz’s ideas about the nature of space.
THE PERIODIC TABLE OF CHEMICAL ELEMENTS AND THE PROBLEM OF ITS JUSTIFICATION
Authors: Babenko I. A.
Published: April 2023

The article considers five stages in the history of the discovery and attempts to substantiate Mendeleev’s periodic system of chemical elements. The first stage consists in the accumulation, systematic analysis of extensive empirical material and in the direct establishment of the periodic law of chemical elements by Mendeleev. At the second stage, attempts were made to atomic-electronic explanation of the periodicity of the physical and chemical properties of elements on the basis of quantum mechanics and the Pauli principle. The third stage is associated with the development of nuclear physics, as well as with the development of such chemical methods as radiochemical analysis, the chromatographic method of color, etc. At the fourth stage, a solution to the problem was proposed on the basis of group theory in the quantum mechanical understanding. The fifth stage is based on the relational substantiation of the periodic system of chemical elements of the Mendeleev’s table, corresponding to the method of describing hadrons.
“CONCRETE METAPHYSICS” OF THE SCIENCE OF THE PHILOSOPHER FR. PAVEL FLORENSKY
Authors: Dmitriev V. G.
Published: April 2023

The name of Pavel Alexandrovich Florensky is widely known as a philosopher, an Orthodox priest who tragically died in 1937. It is little known that he is also an outstanding mathematician, physicist, electrical engineer, who founded a new scientific direction - materials science, who made a great contribution to the development of this direction. His works devoted to science contain many deep thoughts of philosophical content, relevant now. His, as he defined it - “concretely metaphysical” ideas, are of interest, both from the point of view of the philosophical approach and the applied content. In particular, he substantiated the geometric and physical meaning of imaginary numbers and put forward the idea of imaginary space; approach to physics and mathematics as a symbolic language; computing devices based on various physical laws. This article is devoted to these and his other ideas.
SPATIAL AND TEMPORAL ASPECTS OF UNIVERSAL PERIODS SPECTRUM
Authors: Panchelyuga V. A. , Panchelyuga M. S.
Published: April 2023

The paper discusses the role of the Mach principle as a theoretical basis for the universal spectra of periods obtained experimentally. The connection following from this principle according to the “all-to-all” principle can be used as the basis for the model of complementary fractal distributions or R-fractal. It is shown that the irrational fractal sequences following from the R-fractal can serve as a model of the universal spectra of periods, which act as the temporal aspect of the R-fractal. Examples of phenomena that represent the spatial aspect of the R-fractal are given, in particular, the icosahedral-dodecahedral model of the Earth’s structure.
ABOUT SCIENTIFIC ACHIEVEMENTS OF RUSSIAN CIVILIZATION: THE KEY TO SCIENTIFIC AND PHILOSOPHICAL CREATIVITY
Authors: Antipenko L. G.
Published: April 2023

Opponents of Russian culture have spent a lot of effort to prove that our culture has not reached the level of development at which European and Western culture in general is. It did not reach it, if only because it did not develop its own national philosophy. The article shows why such a false idea has developed in the minds of Western ideologists. The fact is that they are looking for Russian philosophy only in a purely religious area, in the so-called “Berdyaevshchina”, far from the scientific achievements of Russian civilization. And in scientific achievements, as the author shows on a number of examples given in this article, national philosophy is contained. They do not notice it because it is presented in a logical form, mediated by a special dialectical logic, which was later rediscovered in the fundamental ontology of the German thinker Martin Heidegger. Since this logic permeates both the sphere of scientific and philosophical thinking, Russian philosophy, the Russian national worldview, originates in it. This can be seen in the example of the logical structure of Lobachevsky’s non-Euclidean geometry, it is the origin of Russian philosophy, Russian national worldview. It is no coincidence that D.I. Mendeleev saw in Lobachevsky’s geometry something more than a particular mathematical discipline of thought, and said: “Geometric knowledge formed the basis of all exact science, and the originality of Lobachevsky’s geometry was the dawn of the independent development of sciences in Russia. The scientific sowing will sprout for the harvest of the people...”. An equally high assessment of Lobachevsky’s geometry was voiced by prof. V.F. Kagan: “I take the liberty of asserting that it was easier to stop the sun, that it was easier to move the earth than to reduce the sum of angles in a triangle, to reduce the parallels to convergence and push the perpendiculars to the straight line to divergence”. This is one of the results of applying dialectical logic.
Studi Terhadap Makna Hadis-Hadis Moderasi Beragama
Authors: Wahid Abd , Maizuddin Maizuddin , M Jakfar Tarmizi
Published: April 2023

Prophet Muhammad SAW is a source of information and guidance for people in carrying out the complete Islamic law. However, the understanding of this information does not always result in a unanimous agreement among the Muslim community, except in some aspects that are clearly defined in the Quran and authenticated Hadiths. In some cases, there may be opportunities for different practices based on the context of the situation. During the Prophet's lifetime, his companions could easily confirm the correctness of their actions by seeking his guidance. In certain cases, the Prophet's guidance was clear and unambiguous, and his companions were obliged to follow it. In other cases, the Prophet provided alternatives, allowing them to choose according to the situation they faced. In the context of religious moderation, which requires alternatives in some matters, there is a need for in-depth research into some Hadiths that contain messages on the importance of practicing religious moderation. This is necessary to avoid misunderstandings among the Muslim community and to create a harmonious religious social life, both within and outside the Muslim community.ABSTRAKNabi Muhammad Saw merupakan sumber informasi dan panutan bagi manusia dalam melaksanakan syariat Islam secara kaffah. Pemahaman terhadap berbagai informasi tersebut tidak secara tegas menghasilkan satu kata sepakat bagi umatnya, kecuali dalam beberapa aspek yang ditetapkan dengan ayat Alquran yang muhkam dan hadis-hadis mutawatir. Bahkan dalam beberapa kasus, dianggap memiliki peluang untuk dipraktikkan dengan beberapa alternatif, sesuai dengan konteks yang mengitari umat manusia.  Dalam praktiknya, para sahabat dengan mudah dapat mengkonfirmasi setiap amalan yang mereka lakukan karena masih hidupnya Nabi Saw.  Dalam kasus tertentu, para sahabat mendapati titah Nabi jelas dan tegas, sehingga tidak boleh bagi mereka mempraktikkan dengan cara yang tidak diizinkan oleh Nabi mereka. Sedangkan dalam beberapa aspek lainnya, Nabi memberikan alternatif kepada mereka untuk memilih sesuai dengan situasi dan kondisi yang dihadapi. Dalam konteks moderasi beragama, yang menuntut adanya alternatif-alternatif dalam suatu perkara, dibutuhkan penelitian secara mendalam terhadap beberapa hadis yang mengandung pesan-pesan terhadap pentingnya praktik moderasi beragama tersebut, sehingga tidak menimbulkan kesalahpahaman di kalangan umat Islam, dan juga dapat menciptakan kehidupan sosial keagamaan secara harmonis khusus di internal umat Islam itu sendiri, dan secara umum terkait pihak eksternal umat Islam.
Hyperbaric oxygen therapy for treatment of COVID-19-related parosmia: a case report
Authors:   Hyperbaric Medicine Unit, Toronto General Hospital, 200 Elizabeth Street, Toronto, Canada, Krimus Lior , Syed Hasan Rizvi ,   Hyperbaric Medicine Unit, Toronto General Hospital, 200 Elizabeth Street, Toronto, Canada, Marinov Anton ,   Rouge Valley Hyperbaric Medical Center, 2863 Ellesmere Road Unit 110, Scarborough ON M1E 5E9, Ontario, Canada,   Hyperbaric Medicine Unit, Toronto General Hospital, 200 Elizabeth Street, Toronto, Clarke Hance ,   Rouge Valley Hyperbaric Medical Center, 2863 Ellesmere Road Unit 110, Scarborough ON M1E 5E9, Ontario, Canada,   Hyperbaric Medicine Unit, Toronto General Hospital, 200 Elizabeth Street, Toronto, Katznelson Rita ,   Rouge Valley Hyperbaric Medical Center, 2863 Ellesmere Road Unit 110, Scarborough ON M1E 5E9, Ontario, Canada,   Hyperbaric Medicine Unit, Toronto General Hospital, 200 Elizabeth Street, Toronto, Canada
Published: April 2023

Parosmia is a qualitative olfactory dysfunction characterized by distortion of odor perception. Traditional treatments for parosmia include olfactory training and steroids. Some patients infected with COVID-19 have developed chronic parosmia as a result of their infection. Here we present the case of a patient who developed parosmia after a COVID-19 infection that was not improved by traditional treatments but found significant improvement after hyperbaric oxygen therapy.
Barodontalgia during hyperbaric oxygen therapy of an 8-year-old male: a case report
Authors:   Marmara University, Faculty of Dentistry, Department of Oral and Maxillofacial Radiology, Istanbul, Turkey, Öçbe Melisa , Sümen Selin Gamze ,   University of Health Sciences, Kartal Dr. Lutfi Kirdar State Hospital, Department of Underwater and Hyperbaric Medicine, Istanbul, Turkey, Altun Büşra Dilara ,   Marmara University, Faculty of Dentistry, Department of Oral and Maxillofacial Radiology, Istanbul, Turkey, Dumlu Asim ,   Marmara University, Faculty of Dentistry, Department of Oral and Maxillofacial Radiology, Istanbul, Turkey
Published: April 2023

Barodontalgia, barometric pressure-induced dental pain, may occur during hyperbaric oxygen therapy due to pressure changes. This case report represents an 8-year-old male patient with barodontalgia. The patient declared a severe toothache during hyperbaric therapy. The diving medicine specialist referred the patient to the dental clinician immediately. Upon clinical examination, the pain was thought to be caused by caries lesions of the deciduous teeth in the left maxillary molar region. Tooth extraction was suggested. After extraction, patient continued hyperbaric oxygen therapy sessions without any pain. Patient was recommended for a session to intraoral and radiographic examination one week after the extraction. In conclusion, caries lesions and faulty restorations should be examined before hyperbaric oxygen therapy sessions. Even though barodontalgia is a rare phenomenon, dental examination is essential to avoid these kinds of pain-related complications. All carious lesions and defective restorations must be treated, if necessary. Removal of faulty restorations, and management of inflammation as part of the treatment is suggested before being exposed to pressure changes.
Chondronecrosis of the cricoid treated with hyperbaric oxygen therapy: A case series
Authors:   Otolaryngology - Head & Neck Surgery, University of Nebraska Medical Center, Spencer John David , Connely Tyler ,   College of Medicine, University of Nebraska Medical Center, Cooper Jeffrey ,   Hyperbaric and Emergency Medicine, University of Nebraska Medical Center, Dowdall Jayme Rose ,   Otolaryngology - Head & Neck Surgery, University of Nebraska Medical Center
Published: April 2023

We present two cases of cricoid chondronecrosis treated with hyperbaric oxygen (HBO2) therapy. Both patients presented with biphasic stridor and dyspnea several weeks after an intubation event. Tracheostomy was ultimately performed for airway protection, followed by antibiotic treatment and outpatient HBO2 therapy. Both patients were decannulated within 6 months of presentation and after at least 20 HBO2 therapy sessions. Despite a small sample size, our findings are consistent with data supporting HBO2 therapy’s effects on tissue edema and neovascularization as well as HBO2 potentiation of antibiotic treatment and leukocyte function. We suggest HBO2 therapy may have accelerated airway decannulation by way of infection resolution as well as the revitalization of upper airway tissues, ultimately renewing the structural integrity of the larynx. Physicians should be aware of the potential benefits of HBO2 therapy when presented with this rare but significant clinical challenge.
Cerebral arterial gas embolism and neurogenic stunned myocardium in a previously healthy freediver
Authors:   U.S Navy Explosive Ordnance Disposal Mobile Unit Five, Santa Rita, Guam, Baldino Tyler J. , Goh Mei S. ,   U.S Navy USS Frank Cable (AS-40), Santa Rita, Guam
Published: April 2023

Cardiomyopathy is a known but rare sequelae of diving-related cerebral arterial gas embolism (CAGE). In previously reported cases, patient findings have been consistent with takotsubo cardiomyopathy (TCM) per the revised Mayo Clinic’s diagnostic criteria. A lesser-known variant of stress-related cardiomyopathy is neurogenic stunned myocardium (NSM), which occurs after a neurological event such as subarachnoid hemorrhage and typically presents in younger patients. Presentation tends to differ slightly to TCM with non-specific left ventricular dysfunction and T wave inversions. This case adds to the rare numbers of reported cardiomyopathy from diving and is the first reported case of suspected NSM associated with CAGE.
Aerobic exercise performance is reduced following prolonged cold-water immersion
Authors:   University at Buffalo, Department of Exercise and Nutrition Sciences, Center for Research and Education in Special Environments, Buffalo, NY, Hess Hayden W. ,   Indiana University-Bloomington, Department of Kinesiology, School of Public Health, Bloomington, IN, Schlader Zachary J. ,   Indiana University-Bloomington, Department of Kinesiology, School of Public Health, Bloomington, IN, Johnson Blair D. ,   Indiana University-Bloomington, Department of Kinesiology, School of Public Health, Bloomington, IN, Pryor Riana R. ,   University at Buffalo, Department of Exercise and Nutrition Sciences, Center for Research and Education in Special Environments, Buffalo, NY, Hostler David ,   University at Buffalo, Department of Exercise and Nutrition Sciences, Center for Research and Education in Special Environments, Buffalo, NY,   University at Buffalo, Department of Emergency Medicine, Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY
Published: April 2023

We tested the hypotheses that self-paced aerobic exercise performance is reduced following four hours of cold-water immersion when breathing air and further reduced when breathing 100% oxygen (O2). Nine healthy adults (four women; age 24 ± 3 years; body fat 17.9 ± 6.4 %; V̇O2max 48 ± 9 mL·kg·minute-1) completed three visits: a no-immersion control trial and two experimental trials consisting of a four-hour cold-water immersion (20.1±0.3C) either breathing air (FIO2 = 0.21) or O2 (FIO2 = 1.0). During the no-immersion control trial and following immersion in the experimental trials, subjects first completed a 60-minute ruck-march carrying 20% of body mass in a rucksack, immediately followed by an unweighted, self-paced 5-km time trial on a motorized treadmill. Core temperature, heart rate, and rating of perceived exertion were recorded every 1,000 meters during the 5-km time trial. Data are presented mean ± SD. Time trial performance was reduced following immersion in both the 100% O2 trial (32 ± 6 minutes; p=0.01) and air trial (32 ± 5 minutes; p=0.01) compared to the control trial (28 ± 4 minutes). However, there was no difference between the 100% O2 and air trials (p=0.86). Heart rate, core temperature, and rating of perceived exertion increased during the time trial (time effect: p<0.01), but were not different between trials (trial effect: p≥0.33). These findings suggests that prolonged cold-water immersion attenuates self-paced aerobic exercise performance, but does not appear to be further affected by breathing gas type.
From UPTD to ESOT: Monitoring hyperoxic exposure in surface-oriented diving
Authors:   NUI, Bergen, Norway, Risberg Jan , van Ooij Pieter-Jan ,   Diving Medical Center; Royal Netherlands Navy, Den Helder, The Netherlands, Matity Lyubisa ,   Hyperbaric and Tissue Viability Unit, Gozo General Hospital, Malta
Published: April 2023

A recent review suggested that the measure K = t2 x pO24.57 (t is exposure time in h, pO2 in Atm) should replace UPTD as an exposure index for pulmonary oxygen toxicity (POT) in surface-oriented diving. K would better predict reduction in vital capacity (VC) during exposure and allow prediction of recovery. Although K is more accurate estimating VC changes than UPTD, the calculation of K is more extensive, particularly when estimating hyperoxic exposure for dives with multiple pO2 segments. Furthermore, and in contrast with UPTD, K is difficult to interpret on its own given its non-linear dimension of time. We suggest that a new metric: ESOT (Equivalent Surface Oxygen Time) should be used to replace UPTD. ESOT = t x pO22.285 (t is exposure time in min, pO2 in Atm). ESOT=1 is thus the hyperoxic exposure reached after 1 min breathing of 100% O2 at surface pressure. Hyperoxic monitoring by ESOT is more practical than K to apply in an operational environment, with no loss of accuracy in POT prediction. In addition, it intuitively allows interpreting hyperoxic exposures on its own, analogous to UPTD. The daily hyperoxic threshold limits suggested by Risberg and van Ooij for two, five and an unlimited number of successive diving days would translate to ESOTs of 650, 500 and 420 respectively.
Arterial gas embolism in a breath-hold diver
Authors:   Naval Diving and Salvage Training Center, 350 South Crag Road, Panama City Beach, FL, Gall Ryan A , Rahimi Rahman R ,   Naval Diving and Salvage Training Center, 350 South Crag Road, Panama City Beach, FL
Published: April 2023

An arterial gas embolism (AGE) is a potentially fatal complication of scuba diving that is related to insufficient exhalation during ascent. During breath-hold diving, an arterial gas embolism is unlikely because the volume of gas in the lungs generally cannot exceed the volume at the beginning of the dive. However, if a diver breathes from a gas source at any time during the dive, they are at risk for an AGE or other pulmonary overinflation syndromes (POIS). In this case report, a breath-hold diver suffered a suspected AGE due to rapidly ascending without exhalation following breathing from an air pocket at a depth of approximately 40 feet.
Unpacking the Impact of Customer Perceived Value and Competitive Advantage on Customer Loyalty: The Mediating Role of Trust
Authors: Basrowi Basrowi , Ali Juhary , Suryanto Tulus
Published: April 2023

New studies are needed to illuminate the factors that affect customer satisfaction when using sharia banking services in Indonesia. This is especially significant given the existing study gap regarding Indonesia's relatively low number of sharia bank customers, despite the country's predominantly Muslim population. Instead, many of them prefer to use conventional banks, highlighting the need for a deeper understanding of the reasons behind this trend. This study examined the impact of customer perceived value and competitive advantage on customer loyalty mediated by trust. This investigation employed a quantitative methodology to examine the relationship between consumers' perceived value, competitive advantage, trust, and customer loyalty. The participants of this study were selected from the customer of Bank Syariah Indonesia (BSI), and data were collected through a questionnaire. The sample size was 210, and the researchers utilized random sampling to select participants. To analyze the collected data, the researchers employed structural equation modeling (SEM) analysis. The study results indicate that perceived value, competitive advantage, and trust significantly impact customer loyalty. This study also shows the mediating role of trust in the relationship between variables.
The effect of community mobility changes to air quality in Java-Bali during the early phase of COVID-19 pandemic
Authors: Subekti Hening Tyas , Christanto Joko
Published: April 2023

Previous studies found a reduction in pollution levels when travel was banned due to the COVID-19 pandemic. This study aims to identify the changes in community mobility and air quality, as well as to analyze the effect of community mobility changes on air quality during the early phase of the COVID-19 pandemic. This study used daily secondary data from Google Mobility Report and station data archive of Air Quality Monitoring System (AQMS) which records Air Pollutant Index Standard (ISPU). This study focused on the early phase of the pandemic (15th Feb – 15th June 2020) in six provinces in Java and Bali. This study used panel regression and GIS. The results show that there is 35-90% reduction in mobility and also some decreases in air quality pollutants. Furthermore, it was shown that there is a positive relationship between ISPU and mobility. Community mobility explains ISPU in Bali, the Special Region of Yogyakarta, the Special Capital Region of Jakarta, West Java, Central Java, and East Java by 24%, 53%, 13%, 3.7%, 20%, and 39% respectively. Meanwhile, the combined influence of the six provinces is 18.8%. The variable that has a significant effect is the community mobility changes on transit stations. Every 1% increase in the transit station's mobility is capable to increase ISPU by 0.4.
Dynamics of land use/cover changes and plant diversity in Tubah Sub-Division, Cameroon
Authors: Egbe Awo Miranda , Fonge Beatrice Ambo  , Angwi Judith T  , Tabot Pascal Tabi
Published: April 2023

Land use change detection is often conducted to critically discern trends, causes, and their impacts on the landscape to enhance decision-making for conservation of biodiversity and ecological functions. The objectives of the study were to evaluate Land Use and Land cover changes in Tubah Sub-Division, Cameroon, from 1986 to 2017, and to determine plant diversity and abundance in areas with different land uses. Field surveys were carried out to determine the diversity of this area, eight 50x50m sample plots were established in four different sites and trees and shrubs with diameter at breast height (DBHâ‰¥10mm) were sampled. Primary data was obtained through field observations and ground truthing in order to confirm observations on satellite images. Land use maps were produced using GIS ArcGis 10.2. Images were extracted for the years 1986, 1996, 2006, and 2017. A total of 173 species were recorded in all the sites belonging to 63 families and 146 genera. The fallow land and secondary forest were the most diverse of all the sites with the highest Shannon index of Hâ€²= 3.09 and Hâ€²= 2.97 respectively. The least diverse were the agricultural and grazing lands, with Hâ€²= 1.39. Analysis of the GIS data revealed a decline in vegetation cover of 90.24 hectares from 1986-1996, 23.76 ha from 1996-,2006 and 86.70 ha from 2006-2017. Settlement areas increased by 63.64 ha from 1986-1996, 53.37 ha from 1996-2006 and 15.36 ha from 2006-2017. Water bodies reduced from 1986-1996 by 7.34 ha, 14.28 ha from 1996-2006 and 3.56 ha from 2006-2017. Bare ground increased by 135.88 ha from 1986-2017. Field observations revealed that agricultural intensification, construction of buildings, unsustainable logging and grazing were the major causes affecting plant diversity in Tubah Sub-Division. The studyâ€™s outcomes are critical for future land-use planning exercises and the long-term conservation of the biodiversity and water sources for the communities. The population of Tubah should be educated on sustainable land use management and biodiversity conservation.
Global Crude Oil Refinery Models: Parametric and Non-Parametric Methods
Authors: Umeozor Evar
Published: April 2023

There is a dearth of public literature on reliable, evidence-based
modeling representation of global crude oil refineries, this has led to
the lack of transparency and consistency on how business and government
policy processes are informed in many energy systems and energy
transitions modeling scenarios. This paper uses actual field data to
identify that 40 unique refining configurations account for the global
refinery landscape. A machine learning algorithm training extremely
randomized trees predictors is applied to develop a non-parametric
production model of the refineries. To facilitate computational
convenience and suitable deployments in diverse use cases, a
multivariate linear regression model of the refineries is also
presented. For all refined products captured, the machine learning model
demonstrate superior predictive performance with coefficients of
determination of over 90%, even though both models are useful. Other
performance metrics are also assessed for both models.
Transient increase of platelet associated with COVID-19 infection during TRAs as the second-line treatment in children ITP：a single center report on the prevalence of BV7 mutant in December 2022 from Beijing, China
Authors: Wang Zhifa , Cheng Xiaoling , Meng Jinxi , Ma Jingyao , Chen Zhenping , Wu Runhui
Published: April 2023

Background:The thrombopoietin receptor agonists (TRAs) were
recommended for primary immune thrombocytopenia (ITP) during the
pandemic of COVID-19. However, the incidence of thrombocytosis and
thrombosis was sporadically reported in the chronic immune
thrombocytopenia (CITP) patients receiving TRAs during the COVID-19
infection. Objective: With the local prevalence of COVID-19 in
Dec 2022 in the Beijing area, we got more powerful evidence about the
change in platelet (Plt) counts associated with COVID-19 infection.
Methods: A signal center observational cohort study was
performed from the beginning of Dec. 2022 to the end of Feb. 2023 to
enroll CITP children treated with TRAs alone as the second-line
treatment and suffering from the COVID-19 infection in Dec. 2022. The
Plt counts before, during, and after COVID-19 infection were collected.
Results: In total, 67 (34 males and 33 females) patients with
8.10 (2.15, 15.70) years of age were enrolled. Sixty-three patients who
had responded to the TRAs showed a transient increase in Plt counts
after the infection of COVID-19. The time of starting to increase was on
Day 3(2,7), and to the peak level on Day 14(7,19) of infection with the
peak Plt count was 289 (88, 1974)×10 /L. With at
least two months observation period from COVID-19 infection, the Plt
counts of 100% (63/63) patients declined to the baseline on Day 25(14,
41). Conclusion: The phenomenon of transient increasing of Plt
counts has been shown in the CITP children who have treatment responses
to TRAs when suffering from COVID-19 infection.
Increased fetal fraction is associated with the incidence of birth weight discordance and selective fetal growth restriction：a retrospective cohort study
Authors: Hua Renyi , Xia Yuanqing , Wang Shan , Sun Jinling , Gao Li , Wu Yi , Zhao Xinrong , Wang Yanlin
Published: April 2023

Objective To test the hypothesis that the fetal fraction in
twin pregnancy would reflect birthweight discrepancy. Design
Retrospective cohort study. Setting International Peace
Maternity and Child Health Hospital in Shanghai, China
Population We included 237 twin pregnancies undergoing cfDNA
screening for aneuploidy and delivered at International Peace Maternity
and Child Health Hospital in Shanghai, China between January 2018 to
December 2021. Exclusion criteria including abnormal NIPT results，
fetal demise or structural abnormalities. Methods All women
with twin pregnancies were offered a scan to determine chorionicity as
well as first-trimester nuchal translucency (NT) at 11
-13 weeks. Dichorionic was
confirmed when ultrasound assessment clearly indicates two placentas.
The twin peak sign is used to distinguish chorionicity if only one
placenta is visualized. Main Outcome Measures Fetal fraction
and birth weight of the new borns were collected. Relationships between
fetal fraction and birth weight discordance or sFGR were analysed.
Results Fetal fraction was positively correlated with the
difference of birth weight (β=0.004, 95%CI:
0.001~0.006). Higher fetal fraction was significantly
associated with the increased risk of birthweight discordance of 20%
(adjusted OR:1.073, 95%CI: 1.009~1.142) and 25%
(adjusted OR:1.092, 95%CI: 1.006~1.185) and
sIUGR(adjusted OR:1.130, 95%CI: 1.038~1.231). We
obtained the optimum cut-off point of fetal fraction ≥ 11.790, ≥ 14.800
and ≥ 14.800 for birthweight discordance of 20% and 25% and sFGR,
respectively. Conclusion This study shown that fetal fraction
was positively correlated with the difference of birth weight. Fetal
fraction could be used as a biomarker in predating birth weight
discordance and sFGR, and help to make individualized clinical
monitoring plans for twin pregnancies.
IP-10 for the diagnosis and treatment monitoring of tuberculosis in children.
Authors: Komorowska-Piotrowska Anna O. , Strzelak Agnieszka M. , Borowa Agnieszka , Krasińska Maria , Feleszko Wojciech , Kulus Marek
Published: April 2023

Purpose: To determine the utility of interferon-gamma-inducible
protein 10 (IP-10) for identifying active tuberculosis (TB) and latent
TB infection (LTBI) in children in BCG-vaccinated population, establish
its diagnostic performance characteristics, and evaluate changes in
IP-10 level during anti-TB-chemotherapy. Methods: Concentrations
of IP-10 and IFN-γ were measured in QuantiFERON-TB Gold (QFT)
supernatants in children with suspected TB or due to a recent TB
contact. A total of 225 children were investigated: 33 with active TB,
48 with LTBI, 83 TB contacts, 20 with suspected TB but other final
diagnosis, and 41 controls. In 60 children cytokine responses were
evaluated on follow-up visit after 2 months of anti-TB-treatment.
Results: IP-10 expression was significantly higher in infected
children (active TB and LTBI cases) than in uninfected individuals.
IP-10 proved effective in identifying TB infection at its optimal
cut-off (>1084.5 pg/ml), but was incapable of
differentiating between children with active TB and LTBI. Combining
IP-10 and IFN-γ increased QFT sensitivity. IP-10 but not IFN-γ decreased
significantly during anti-TB-treatment in children with active TB (p =
0.003). Conclusion: IP-10 identifies TB infection and declines
during anti-TB-chemotherapy in children. Incorporating IP-10 into new
immunodiagnostic assays could improve TB diagnosis and allow treatment
monitoring.
Design and Analysis of Compact Dual Band WPT System Using Interdigital Capacitor
Authors: Atallah Hany A.
Published: April 2023

In this paper, a noteworthy compact dual band wireless power
transfer (DB-WPT) system is presented and studied. This system is
proposed using interdigital capacitor which reduced the size of the
whole system and accomplished high efficiencies. An interdigital
capacitor is printed in the ground plane of the design and loaded with a
chip capacitor to produce dual bands. The operation of the system is
verified by fabricating the proposed DB-WPT system, which shows measured
coupling efficiencies of 96 % and 98.8 % at 0.53 and 1.1 GHz,
respectively at a transfer space of 12 mm. The fabricated structure has
dimensions of 13.5 mm × 20 mm. The results show good agreement between
the circuit model and the measurements. The idea of this design makes it
applicable for compact near field WPT applications.
Influence of specific electrical resistance on the heating of metal plates exposed to high frequency electromagnetic waves
Authors: Milosevic-Mitic Vesna , Jovanovic Milos , Petrovic Ana , Ivanovic Ivana , Micovic Aleksandar
Published: April 2023

Temperature distribution in the metallic plate influenced by high frequency electromagnetic wave depends on thermal and electrical properties of the plate material. The goal of the paper is to present the significance of the temperature dependence of the electrical resistivity and its influence on the plate heating. A mathematical model of the problem was established and an analytical closed-form solution the problem was presented. The active power of the electromagnetic wave was calculated by Poynting vector. Temperature field was obtained by integral-transform technique. Numerical examples were presented for three different materials (copper, aluminum, and steel). Calculated results show the large influence of temperature dependent electrical resistance on heating of the metallic plate.
Non-Newtonian natural-convection cooling of a heat source of variable length and position placed at the bottom of a square cavity
Authors: Horimek Abderrahmane
Published: April 2023

Natural-convection cooling of a heat source placed at the bottom wall of a square cavity filled with non-Newtonian fluid was investigated numerically. Two thermal conditions were assumed at the source (imposed temperature or flux density). The effects of Rayleigh number, rheological index, n, source length, SL, its position, D, and Prandtl number, were analyzed. For a centered source. The three first parameters were varied. The results show an increase in dynamic and thermal fields? perturbations when Rayleigh number increases and/or source length increases and/or n decreases. These observations are clearer in the first heating type compared to the second. Mean Nusselt number increase is recorded when Rayleigh number increases and/or n decreases, while it decreases with source length increase until SL = 1.0 where a new increase is recorded. For a non-centered source, the previous observations still valid, noting the loss of symmetry. The highest mean rate of heat exchange is recorded when D = 0.0 with decreasing amounts when moving towards the center. Finally, Prandtl number effect is analyzed. Results show a better diffusion of heat when increases for low n. Consequently, a marked increase in the mean Nusselt number for n < 1.0, weak for n = 1.0 and almost absent for n > 1.0 are recorded with a clearer effect for the first type of heating.
Study of a novel ternary second-order viscosity model on Al2O3-water nanofluid
Authors: Huang Hongyan , Li Chunquan , Huang Siyuan , Shang Yuling , Wang Qiao
Published: April 2023

In terms of heat dissipation, nanofluids with strong thermal conductivity are becoming more and more common, attracting more and more research and attention to date.In this study, Al2O3-H2O nanofluids were studied using molecular dynamics simulations and model parameterization. The dynamic viscosity distribution patterns were obtained at various temperatures(290K~360K), nanoparticle volume fractions(1.24%~6.2%), and particle sphericity(0.69~1.0), and an efficient ternary second-order polynomial viscosity prediction model was proposed on the basis of these results.The findings demonstrate the model's goodness-of-fit with a coefficient of determination over 0.96 and a root mean square error under 0.05, as well as its high predictive ability with a maximum relative error between simulated and predicted values under 9%. Using this viscosity prediction model, a subsequent parametric sensitivity study showsthat the volume fraction had the most significant impact on viscosity, exhibiting not just a second order effect but also an interacting effect with temperature and sphericity. The relative nanofluid viscosity, which is the ratio of nanofluid viscosity to aqueous base fluid viscosity, exhibits a convex parabolic growth at constant temperature and sphericity and increases more quickly at the same volume fraction the higher the temperature. The viscosity of the nanofluid increases by up to 34% when the volume fraction is equal to 6.28% and the particle sphericity is equal to 1.An efficient viscosity prediction model makes it easier to control important variables to reduce energy consumption during flow and increase its capacity to dissipate heat.
Experimental study results of the front-end device with two-tier air burner as part of the gas turbine engine combustion chamber
Authors: Dostiyarov Abay , Nauryz Bauyrzhan , Kumargarina Madina , Dostiyarova Aliya , Turymbetova Gulzukhra , Anuarbekov Maxat , Aidymbayeva Zhanar
Published: April 2023

In recent years, the gas turbine power plant has been increasingly used in various industries in Kazakhstan. The reasons for this are: thermal efficiency, simplicity of the thermal scheme and design, small mass per power unit, high maneuverability, low toxicity, and relatively simple automation of operation. This paper presents the experimental study results of a two-tier air burner as the part of the gas turbine engine combustion chamber at burning liquid fuel. ? new design of a microflame device was developed. Two-tier burner makes possible the combustion process in a number of discrete zones, i.e. microflame combustion. During the experiment, the installation angles of the blades of the external and internal registers, as well as the ratio of the coefficients of excess air in the tiers, were changed. The experimental studies of a two-tier burner confirmed the possibility to increase fuel combustion efficiency, a low degree of temperature field unevenness and to decrease NOx emission.
Laminar premixed burning characteristics of methanol/ethanol/air at high temperature and pressure
Authors: Lu Chenyu , Zhou Jianxi , Oppong Francis , Feng Aixin
Published: April 2023

A numerical study was conducted to evaluate the laminar burning characteristics of methanol/ethanol/air flames under engine operating conditions. Methanol and ethanol are common burning oil of biomass that can replace fossil fuels and have a high laminar combustion rate relative to gasoline. Few scholars have studied the laminar combustion characteristics of methanol/ethanol mixture. This study aims to analyze the similarities and differences of methanol/ethanol/air flames for different methanol percentages and equivalence ratios in a wide range of pres?sure and temperature conditions. Chemkin software with chemical reaction kinetic mechanism of Mittal was used and validated against experimental data from the literature. The results showed that methanol significantly increases the laminar burning velocities and the net heat release rate. The maximum laminar burning ve?locities is obtained at the equivalence ratio of 1.1. Due to the high calorific value of ethanol, the adiabatic flame temperature of ethanol are slightly higher than that of methanol. The hydrodynamic instabilities of methanol/ethanol/air flame increase at first and then decrease with the increase of equivalence ratio. Finally, sensitiv?ity analysis show that H + O2 < = > O + OH (R1) mainly influences the laminar burning velocities.
Parameter analysis and optimization of a heat sink for cooling intelligent power modules based on Taguchi method
Authors: Ding Wenhao , Yang Peng , Chen Pengfan , Liu Yingwen
Published: April 2023

The stability of the intelligent power module has a very significant impact on the operation of the air conditioner. In this paper, a prototype experimental platform is built to verify the feasibility of the simulation results. Next, the thermal performance and flow characteristics of the heat sink are analyzed, including single-factor analysis and analysis of interactive effects. The results show that a smaller pipe diameter can reduce the maximum temperature of intelligent power modules, TIPM, but it will increase the pressure drop, ?P, and entropy generation. The thickness of the heat sink plate and the height of the protruding table have an interactive effect on the TIPM. Then the sensitivity of the TIPM and pressure drop to different parameters was analyzed, and the contribution ratio of the pipe diameter to both the TIPM and pressure drop was the largest. Finally, the optimal combination of parameters was obtained to minimize both the TIPM and pressure drop. Compared with the original structure, the TIPM decreased by 3.98 K.
The influence of temperature on geothermal power plant performance based on geology in Huangshadong geothermal field, China
Authors: Luo Chao , Huang Lichang , Lin Chaohui , Huang Huiwen , Zeng Huipeng
Published: April 2023

The geological structure is rather complicated in Guangdong province, in China. The 10 deep fault belts are mainly oriented in North-East. The North-East fault belts are good channels for deep thermal energy upwelling, which can form a geothermal water reservoir zone. The heating of atmospheric precipitation and surface water by deep rocks is the primary formation mechanism for the hydrothermal resources in the Huangshadong geothermal field. The results show that the two-stage conversion system of flash-binary is more reasonable when the geofluid temperature is higher than 130?C. With every 10?C increment of geofluid temperature for flash-binary system, the power output and exergy efficiency in-crease by 21.6-38.7% and 6.0-13.1%, respectively. The power output and exergy efficiency will decrease by about 20-40% when cooling temperature arising from 15?C to 25?C. The research will provide the basic data for the demonstration of geothermal resource exploitation.
Shape optimization of inlet header of micro-channel heat sink using surrogate model combined with genetic algorithm
Authors: Shao Huaishuang , Wang Zongyi , Liao Min , Li Chao , Liang Zhiyuan , Zhao Qinxin
Published: April 2023

A lot of work has documented the significance of fluid-flow uniformity on the thermal-hydraulic performance of the micro-channel heat sink. The purpose of this work is to optimize the shape of inlet/outlet headers of a micro-channel heat sink to improve the flow distribution characteristics using the back propagation neural networks combined with the genetic algorithm as the surrogate model. The slanted edge of the inlet header is defined as the quadratic parabola instead of straight line. Meanwhile, the shape of the parabola is optimally designed for different flow rates. The 40 training sample points and six testing sample points on different geometry structures of inlet header are designed by the Latin hypercube sampling method. The 3-D CFD calculation is performed for all models. The objective function is defined as the non-uniformity of the fluid-flow. It is found that the prediction of the genetic algorithm back propagation for the fluid-flow distribution is capable of obtaining objective function values within the designed space. Through the optimizations, the non-uniformity of the optimal inlet header structure can be reduced by 52.43% to 33.17% for the inlet velocity of 0.05 m/s to 0.1 m/s, respectively, compared to that of the original design. The results demonstrate that the parabolic treatment for the slanted edge of the inlet header as well as structural optimization can greatly improve the flow uniformity of the micro-channel heat sink.