bluuebunny/crossref_metadata_2025 huggingface dataset:
Antibacterial Activity of Papaya Seeds (Carica papaya L.) Ethanol Extract Against Escherichia coli
Authors: Mursyida Eliya , Sella Fitria Dina , Marwan Deinike Wanita
Published: November 2022

Escherichia coli is a normal flora found in the large intestine of humans and is opportunistic. Acute diarrhea is the discharge of watery or loose stools in larger amounts than normal, lasting less than 14 days. Acute diarrhea is caused by several microbes, one of which is Escherichia coli. Treatment of acute diarrhea caused by bacteria can be given antibiotics, but the relatively high use of antibiotics can lead to resistance. One of the natural ingredients known to treat acute diarrhea is papaya seeds (Carica papaya L.). Papaya seeds are known to have antibacterial activity because they contain flavonoids (quercetin), alkaloids, saponins, and tannins. This study aims to determine and analyze the antibacterial activity of the ethanol extract of papaya seeds on the growth of Escherichia coli. This research is an experimental study with a post-test only with a control group research design using papaya seeds (Carica papaya L.). The test bacteria used in this study were Escherichia coli with the dilution method to determine the Minimum Inhibitory Concentration (MIC) and the spread plate to determine the Minimum Bactericidal Concentration (MBC). The results showed that MIC was present at a concentration of 2%, while MBC was at a concentration of 5%. It was concluded that the ethanol extract of papaya seeds (Carica papaya L.) had antibacterial activity against Escherichia coli.
PENGARUH PEMBERIAN PUPUK ZINCOBOR DAN KOMBINASI ZINCOBOR + DOLOMIT TERHADAP PERTUMBUHAN AKASIA DI LAHAN GAMBUT
Authors: Effendi Arman
Published: November 2022

Lahan gambut memiliki karakteristik tanah dengan keasaman tinggi dan tingkat kesuburan yang rendah. Beberapa tanaman yang cocok dibudidayakan di lahan gambut yaitu tanaman perkebunan Akasia, namun kurangnya nutrisi pada lahan gambut juga menyebabkan kondisi shrubby pada akasia. Penelitian ini bertujuan untuk menganalisis pengaruh pemberian pupuk Zincobor dan kombinasi Zincobor + Dolomit terhadap kelurusan batang dan tinggi tanaman akasia. Penelitian menggunakan rancangan nested design dengan lima ulangan dan empat perlakuan, yaitu kontrol, zincobor 20 g, zincobor 20 g + dolomit 250 g, dan zincobor 30 g. Pemberian pupuk dilakukan 1x dan dilakukan pengamatan pada hari ke – 0, 131, 355 setelah pengaplikasian pupuk. Uji kualitas tanah berdasarkan pH, tanah gambut memiliki pH yang rendah yaitu 3,41 – 3,7. Selain itu kandungan unsur mikro seperti Zink, Cu, dan Boron termasuk rendah. Berdasarkan hasil pengamatan, pemberian pupuk Zincobor dengan dosis 20 g menunjukkan nilai kelurusan yang diharapkan paling tinggi dibandingkan perlakuan lainnya. zincobor 20 g juga mampu meningkatkan ketinggian tanaman Akasia dan menurunkan potensi shrubby pada tanaman. Penelitian ini disimpulkan bahwa Zincobor 20 g merupakan dosis pupuk Zincobor yang optimum untuk meningkatkan pertumbuhan tanaman akasia.
Prenatal Exposure to Per- and Polyfluoroalkyl Substances, Maternal Thyroid Dysfunction, and Child Autism Spectrum Disorder
Authors: Shin Hyeong-Moo , Oh Jiwon , J. Schmidt Rebecca , N. Pearce Elizabeth
Published: November 2022

Autism spectrum disorder (ASD), with its high economic and societal costs, is a growing public health concern whose prevalence has risen steadily over the last two decades. Although actual increased incidence versus improved diagnosis remains controversial, the increased prevalence of ASD suggests non-inherited factors as likely contributors. There is increasing epidemiologic evidence that abnormal maternal thyroid function during pregnancy is associated with increased risk of child ASD and other neurodevelopmental disorders. Prenatal exposure to endocrine-disrupting chemicals such as per- and polyfluoroalkyl substances (PFAS) is known to disrupt thyroid function and can affect early brain development; thus, thyroid dysfunction is hypothesized to mediate this relationship. The concept of a potential pathway from prenatal PFAS exposure through thyroid dysfunction to ASD etiology is not new; however, the extant literature on this topic is scant. The aim of this review is to evaluate and summarize reports with regard to potential mechanisms in this pathway.
Yelü Chucai’s Movement in the Mongolian Court Described in Yuanshi
Authors: Sletneva Tatiana
Published: November 2022

This article is about an outstanding political figure Yelü Chucai (1189–1242), who was the main advisor of the Mongol khans. Due to his excellent abilities and skills, he managed to play a significant role at the court of Ögedei Khan (1186–1241), as well as in the elaboration of a tax policy used in Northern China. Yelü Chucai contributed to the creation of a symbiosis of the nomadic Mongolian and sedentary Chinese civilisations that took shape during the Yuan Dynasty (1271–1368) in what is modern-day China.
Ancient Coins of Japan
Authors: Lázár Marianna
Published: November 2022

This paper aims to investigate the origins of ancient coins of Japan (until the 10th century CE), introduce the characteristics of their design and patterns, and examine their role in early Japanese culture and public administration, while briefly introducing the ancient Chinese coins that served as inspiration. Japan adopted numerous ancient Chinese cultural practices during the Asuka and Nara periods (538–794 CE). Especially from the second half of the 7th century to the 8th century CE, Japan introduced various social systems from the Tang dynasty in order to build a centralised government. Japanese nobles recognised the importance of metallic currency, leading to some silver and bronze coin production at the second half of the 7th century CE, including that of Mumon Ginsen and Fuhonsen coins. Scholars believe that they were modelled after ancient Chinese coins. The mintage was regarded as an essential tool for the Japanese government to display the independence and the authority of the nation, both inside and outside the country. The system of the first official imperial currency (Kōchōsen) was introduced to Japan in the early 8th century CE and inspired by the Kāiyuán Tōngbǎo cash coins of the Tang dynasty. The oldest known official Japanese imperial coinage is the Wadō Kaichin. In the second half of the 8th century CE, the national currency was reformed, and silver and gold cash coins were introduced. However, by the end of the 10th century CE, Japan subsequently suspended the mintage and circulation of coins.
Recipe for Inferring Subsurface Solar Magnetism via Local Mode Coupling Using Slepian Basis Functions
Authors: Bharati Das Srijan
Published: November 2022

Direct seismic imaging of subsurface flow, sound speed, and magnetic field is crucial for predicting flux-tube emergence on the solar surface, an important ingredient for space weather. The sensitivity of helioseismic mode-amplitude cross-correlation to p- and f-mode oscillations enables formal inversion of such subphotospheric perturbations. It is well known that such problems are written in the form of an integral equation that connects the perturbations to the observations via sensitivity kernels. While the sensitivity kernels for flow and sound speed have been known for decades and have been used extensively, formulating kernels for general magnetic perturbations had been elusive. A recent study proposed sensitivity kernels for Lorentz stresses corresponding to global magnetic fields of general geometry. The present study is devoted to proposing kernels for inferring Lorentz stresses as well as the solenoidal magnetic field in a local patch on the Sun via Cartesian mode coupling. Moreover, for the first time in solar physics, Slepian functions are employed to parameterize perturbations in the horizontal dimension. This is shown to increase the number of data constraints in the inverse problem, implying an increase in the precision of inferred parameters. This paves the path to reliably imaging subsurface solar magnetic features in, e.g., supergranules and (emerging) active regions.
Physical Correlations Lead to Kappa Distributions
Authors: Livadiotis G. , McComas D. J.
Published: November 2022

The recently developed concept of “entropic defect” is important for understanding the foundations of thermodynamics in space plasma physics, and more generally for systems with physical correlations among their particles. Using this concept, this paper derives the basic formulation of the distribution function of velocities (or kinetic energies) in space plasma particle populations. Earlier analyses have shown how the formulation of kappa distributions is interwoven with the presence of correlations among the particles’ velocities. This paper shows, for the first time, that the reverse is true: the thermodynamics of particles’ physical correlations are consistent only with the existence of kappa distributions.
Prevalence and Characteristics of Chronic Obstructive Pulmonary Disease in Dairy Farmers
Authors: Stoleski Sasho , Minov Jordan , Mijakoski Dragan , Atanasovska Aneta , Bislimovska Dragana , Karadzinska-Bislimovska Jovanka
Published: November 2022

Objective: To assess the prevalence and characteristics of chronic obstructive pulmonary disease (COPD) in dairy farmers, and evaluate the role of job exposure and smoking as predictors for respiratory health impairment. Methods: A cross-sectional study was performed, including 83 dairy farmers (mean age: 52.6±8.7 years; mean exposure duration: 23.7±7.6 years) and 80 office workers as a control group (mean age: 52.7±8.2 years) matched for age, smoking habits, and socioeconomic status. Methods for evaluation of study participants included a questionnaire on respiratory symptoms in the last 12 months, baseline spirometry and bronchodilator reversibility testing, and diagnostic criteria for COPD. Results: The mean post-bronchodilator values of spirometric parameters are significantly lower in subjects among EG with negative bronchodilator test compared to those in CG, while the mean post-bronchodilator values of spirometric parameters are lower in dairy farmers with negative BD tests exposed more than 20 years compared to those with exposure less than 20 years, being statistically significant for FEV1/FVC%, MEF25, MEF50 and MEF75. The COPD prevalence is non-significantly higher in dairy farmers compared to controls, and is significantly associated with age over 40 years in dairy farmers (P=0.035). The risk for COPD development in dairy farmers is about 36 fold higher in subjects exposed more than 20 years (OR = 36.00 (1.21-37.77) CI 95%) compared to those with exposure duration less than 20 years, and is about 6 fold higher in dairy farmers who are current smokers (OR = 6.12 (0.95-37.77) CI 95%). COPD is significantly associated with smoking duration among smokers in both groups, while combined effect of smoking, smoking duration, and number of cigarettes smoked daily has a significant impact on COPD development in dairy farmers. According to the GOLD classification, depending on the degree of airflow limitation, mild and moderate types of COPD are detected in dairy farmers, and only mild type in controls, showing no significant difference between the two groups. Conclusion: The study findings recognized the role of farming exposure, and smoking as well, as predictors for respiratory health impairment, and furthermore confirmed their potential to be a predictive factor in the COPD development. These facts should be helpful in detection of critical points for action, indicate the need of adverse occupational exposures reduction through adequate preventive measures and regular health examinations, implementation of relevant engineering controls, smoking cessation programs, and complete and efficient respiratory health assessment.
Population genetics of an invasive mosquito vector, Aedes albopictus in the Northeastern USA
Authors: Gloria-Soria Andrea , Shragai Talya , Ciota Alexander T. , Duval Todd B. , Alto Barry W. , Martins Ademir J. , Westby Kathleen M. , Medley Kim A. , Unlu Isik , Campbell Scott R. , Kawalkowski Malgorzata , Tsuda Yoshio , Higa Yukiko , Indelicato Nicholas , Leisnham Paul T. , Caccone Adalgisa , Armstrong Philip M.
Published: November 2022

The Asian tiger mosquito (Aedes albopictus) arrived in the USA in the 1980’s and rapidly spread throughout eastern USA within a decade. The predicted northern edge of its overwintering distribution on the East Coast of the USA roughly falls across New York, Connecticut, and Massachusetts, where the species has been recorded as early as 2000. It is unclear whether Ae. albopictus populations have become established and survive the cold winters in these areas or are recolonized every year. We genotyped and analyzed populations of Ae. albopictus from the northeast USA using 15 microsatellite markers and compared them with other populations across the country and to representatives of the major global genetic clades to investigate their connectivity and stability. Founder effects or bottlenecks were rare at the northern range of the Ae. albopictus distribution in the northeastern USA, with populations displaying high levels of genetic diversity and connectivity along the East Coast. There is no evidence of population turnover in Connecticut during the course of three consecutive years, with consistent genetic structure throughout this period. Overall, these results support the presence of established populations of Ae. albopictus in New York, Connecticut, and Massachusetts, successfully overwintering and migrating in large numbers. Given the stability and interconnectedness of these populations, Ae. albopictus has the potential to continue to proliferate and expand its range northward under mean warming conditions of climate change. Efforts to control Ae. albopictus in these areas should thus focus on vector suppression rather than eradication strategies, as local populations have become firmly established and are expected to reemerge every summer.
A revision of the North American genus Proctorus (Coleoptera, Curculionidae, Ellescini) with descriptions of two new species
Authors: Lewis Jake H. , Anderson Robert S.
Published: November 2022

The rarely collected North American endemic genus Proctorus (Coleoptera, Curculionidae, Ellescini) has hitherto contained two described species, P. armatus LeConte, 1876 and P. decipiens (LeConte, 1876). Here, Proctorus is revised and two new species, namely P. emarginatussp. nov. and P. truncatussp. nov., are described. Lectotypes for P. armatus and P. decipiens are designated from known syntypes. All four species in the genus are associated with Salicaceae, but, in addition to differences in external and genital morphology, there is also evidence of differing host plant usage between the species. A photographic key to the four species is provided to facilitate identification.
Les enjeux de la contribution des armées françaises sur le territoire national
Authors: Dizès Marie-Charlotte
Published: November 2022

Résumé Les crises, qu'elles soient terroristes ou sanitaires, mobilisent les forces de défense sur le territoire national, à travers les opérations Vigipirate, Sentinelle, Résilience , par le biais de la réquisition. De cadre exceptionnel, ces dispositifs tendent à se pérenniser et interrogent sur le continuum entre défense extérieure et intérieure, entre la défense et la sécurité. Cet article se propose d'aborder le cadre juridique du déploiement et le régime juridique d'intervention révélant les enjeux de la contribution des armées françaises à la sécurité nationale sur le territoire français. La réquisition fondée sur un dialogue difficile, entre entités militaires et civiles, échappe à tout contrôle. La réglementation touchant le déploiement des forces militaires sur le territoire national, telle l'utilisation des armes, ne connaît qu'une adaptation prudente. Le système s'ajuste de manière marginale et nécessite d'être anticipé et repensé dans sa globalité.
Opérations extérieures : un essai de définition
Authors: Richer Christophe
Published: November 2022

Résumé Depuis le début des années 2000, la France multiplie les déploiements militaires à l'étranger, désignés sous un vocable unique « opération extérieure » (OPEX). En dépit de l'importance politique, stratégique, militaire et financière de ces opérations, la notion d'OPEX est insuffisamment définie par le droit positif. Par conséquent, il est nécessaire de fournir un effort de définition. Cet article propose trois critères sur lesquels toutes les OPEX reposent : la projection de forces, hors des zones de souveraineté française dans un contexte dégradé. Ces piliers doivent former le tronc commun des définitions. Pour autant, il semble préférable d'abandonner la recherche d'une définition unique au profit d'une diversité de définitions adaptées au cadre d'études dans lequel les OPEX sont envisagées. Sont ici envisagées la question du contrôle politique, la question de la protection sociale et pénale du militaire et enfin celle de la licéité des OPEX entendues comme des conflits armés. Enfin, une définition provisoire est proposée pour le juriste.
La politique européenne de défense à la lumière du CFP 2021-2027 : vers un droit européen de la défense ?
Authors: Saoudi Messaoud
Published: November 2022

Résumé Le nouveau cadre financier pluriannuel (CFP) 2021-2027 au contraire des précédents prévoit sept et non plus cinq grandes catégories de dépenses ou rubriques dans sa présentation des politiques publiques européennes financées par les États membres. Ces rubriques, correspondant aux priorités et domaines d'action de l'Union européenne (UE), comprennent notamment une nouvelle rubrique 5 intitulée « Résilience, sécurité et défense ». On sait que l'inscription budgétaire et financière d'un domaine d'activité annonce souvent l'émergence d'une politique et donc d'un droit de mise en œuvre de cette politique publique. La guerre en Ukraine déclenchée par la Russie le 24 février 2022 impulse un nouveau plan d'action visant à renforcer la capacité de défense et de sécurité de l'UE d'ici 2030. Approuvée par le Conseil le 21 mars 2022, cette « boussole stratégique » invite l'UE et ses États membres à augmenter leurs dépenses en matière de défense. L'autonomie stratégique européenne doit en effet avoir une traduction budgétaire pour se concrétiser et s'inscrire dans la durée à travers un droit européen de la défense.
La lutte contre le tabagisme des jeunes : des associations de prévention aux prises d’un pilotage national cadrant
Authors: Arnal Caroline , Beaumel Capucine , Étienne Lucie , Le Tyrant Marion
Published: November 2022

Le programme Tabado vise à accompagner lycéen·nes professionnel·les et apprenti·es dans l’accès au sevrage tabagique. Jugé probant lors de son expérimentation en 2009, il connaît un déploiement progressif en France métropolitaine et ultra-marine depuis 2018. Sa mise en œuvre, pilotée nationalement par l’ inc a (Institut national du cancer), est confiée à différentes associations de prévention en santé à l’échelle régionale dans une logique de territorialisation. À la lumière d’une enquête de terrain qualitative menée durant trois ans dans le cadre de l’évaluation du programme, l’article analyse la manière dont les associations se positionnent vis-à-vis du cadrage national relativement balisé du programme – et qui se rigidifie au fil de son déploiement – oscillant entre conformation aux règles édictées par l’ inc a et négociation de marges de manœuvre. Il souligne plus précisément plusieurs types de résistances déployés par ces dernières allant d’un non-recours aux supports d’animation du programme à des remises en cause plus substantielles des logiques de contrôle ou d’intervention qui l’incarnent. Ce faisant, l’étude de cas montre les ambivalences dans lesquelles sont placées les associations qui, tout en cherchant à valoriser des registres d’actions et des cultures qui leur sont propres et donc leurs spécificités, tendent aussi à se faire reconnaitre comme des acteurs centraux de l’action publique de santé préventive.
Time delay estimation of traffic congestion propagation due to accidents based on statistical causality
Authors: Oh YongKyung , Kwak JiIn , Kim Sungil
Published: November 2022

The accurate estimation of time delays is crucial in traffic congestion analysis, as this information can be used to address fundamental questions regarding the origin and propagation of traffic congestion. However, the exact measurement of time delays during congestion remains a challenge owing to the complex propagation process between roads and high uncertainty regarding future behavior. To overcome this challenge, we propose a novel time delay estimation method for the propagation of traffic congestion due to accidents using lag-specific transfer entropy (TE). The proposed method adopts Markov bootstrap techniques to quantify uncertainty in the time delay estimator. To the best of our knowledge, our proposed method is the first to estimate time delays based on causal relationships between adjacent roads. We validated the method's efficacy using simulated data, as well as real user trajectory data obtained from a major GPS navigation system in South Korea.
A bionic topology optimization method with an additional displacement constraint
Authors: Zhong Yuhai , Feng Huashan , Wang Hongbo , Wang Runxiao , Yu Weiwei
Published: November 2022

Displacement is an important measure of stiffness, and its constraint must be considered in many real engineering designs. However, traditional volume-constrained compliance minimization methods for load-bearing structures do not deal with displacements of practical importance directly. Based on this situation, the paper extends an improved bionic topology optimization method to solve the topology optimization problem with an additional displacement constraint. The updates of density design variables are based on an improved bone remodeling algorithm rather than gradient information employed by traditional methods. An explicit relationship between the threshold in the bone remodeling algorithm and target node displacement is constructed to satisfy displacement constraint. As a result, one will obtain a topology with an optimal cost-weighted sum of stiffness and mass while the target node displacement does not exceed its predefined limit. 2D and 3D examples are given to demonstrate the effectiveness of the proposed method.
Sustav socijalne skrbi iz perspektiva roditelja djece s teškoćama u razvoju
Authors: Gović Josipa , Buljevac Marko
Published: November 2022

The aim of this research is to gain insight into parents‘ of children with developmental disabilities perspectives about rights and services in Croatian social welfare system. This qualitative research was conducted with 13 participants. The results show positive and negative aspects about the realization of rights and services in social welfare system from parents´ of children with developmental disabilities perspectives. Social welfare system as formal support system provides different types of emotional, informational and practical support to families of children with developmental disabilities. The positive aspects indicate professionalism of social workers, improvement of family members´ quality of life, and realization of services, while negative aspects show problems and challenges facing social welfare centers and realization of rights and services. Key words: social welfare system, parents of children with developmental disabilities, rights in social welfare system, services in social welfare system.
Rethinking the Contribution-Benefit Linkage in Pay-As-You-Go Retirement Systems Based on Algerian Case
Authors: Flici Farid
Published: November 2022

In Pay-As-You-Go systems, retirement benefits result from the multiplication of the reference wage by the contribution duration by an annuity rate. This formulation can undergo some adjustments to ensure sustainability within a changing environment. In this paper, we showed that the current contribution-benefit linkage might generate a large gap between individuals in terms of profitability and thus in terms of wealth accumulation over long periods. Considering the possible career scenarios in the Algerian retirement system, we found that return rates vary from 9.6% to 13.2%. To reduce inequality, we propose a new retirement benefit formula partially based on the actuarial fairness principle. Keywords: retirement, PAYG, equality, IRR, scenario, Algeria.
F. Alnajjar, C. Bartneck, P. Baxter, T. Belpaeme, M. Cappuccio, C. Di Dio, F. Eyssel, J. Handke, O. Mubin, M. Obaid, N. Reich-Stiebert: Robots in Education: An Introduction to High-Tech Social Agents, Intelligent Tutors, and Curricular Tools
Authors: Kuleto Valentin , Ilić Milena
Published: November 2022

The use of educational technologies to help learn and teach has evolved from computer-aided presentations to educational robots, as the Ozobot and Pepper presented in this book. Many schools and institutions worldwide are already using robots in the classroom. We are witnessing rapid technological advancements. This progress is due to the term “digitalisation”. The book is written on 238 pages with 49 B/W Illustrations. The book is composed of eleven chapters named: 1. Introduction 2. Theories of Learning 3. The Interactive Mind 4. What Makes a Robot? 5. The Robot as a Tool 6. The Robot as a Social Agent 7. Deployment Requirements 8. Applications 9. Attitudes towards Robots 10. Ethics 11. Research Methods in Educational Robotics. It has a great significance for teachers, students, and society.
Collages dans les fours droits et moyen de les éviter
Authors: Matouschek F.
Published: November 2022

No diponible
L'action néfaste du froid sur la plactioité des aciers employés dans la construction métallique et le bâtiment
Authors: Chagneau André
Published: November 2022

No disponible
Tests of properties of fresh concrete
Authors: Bergström Sven G.
Published: November 2022

No disponible
Cementos de escorias
Authors: Garcia de Paredes Pablo
Published: November 2022

No disponible
Chemische und mineralogische zusammensetzung und einige charakteristische eigenschaften des sulfathüttenzementes
Authors: Mussgnug G.
Published: November 2022

No disponible
Los derivados volcánicos argentinos
Authors: Rocco Arcangelo
Published: November 2022

El autor después de estudiar durante varios años, en el Laboratorio de Investigaciones Tecnológicas de la provincia de Mendoza, las rocas volcánicas argentinas, bajo el punto de vista de su posible utilización como puzolanas, ha redactado un extenso trabajo, cuyo original se publicará en la revista argentina "Técnica e Industria", y del que se expone a continuación un amplio resumen.
Barite-aggregate concrete for gamma-ray shielding
Authors: Shelstad K.A. , Vaughan V.E. , Cameron E.L.
Published: November 2022

No disponible
Pressure treated timbers in dock construction
Authors: Metcalfe L.S.
Published: November 2022

No disponible
El horno vertical (2ª parte) - dimensiones y características de la cocción en el mismo
Authors: Anselm Wilhelm
Published: November 2022

No disponible
What causes kiln ringa?
Authors: Davis W.G.
Published: November 2022

No disponible
Improved portland cement mortars with polyvinyl acetate emulsions
Authors: Geist J.M. , Amagna S.V. , Meller B.B.
Published: November 2022

No disponible
Density measurements of concrete slabs using gamma radiation
Authors: Smith E.E. , Whiffin A.C.
Published: November 2022

No disponible
Wirtschaftliche betrachtungen über die verwendung von papiersäcken
Authors: Anselm W.
Published: November 2022

No disponible
Die bedeutung dar calciumaulfatformen bei der abbindezeitregelung des zementes
Authors: Mussgnug G.
Published: November 2022

No disponible
Contribución al estudio de la estructura del clinker de cemento Portland (continuación)
Authors: Calleja Carrete J.
Published: November 2022

No disponible
Kiln setting and burning. Part two
Authors: Starkie F.
Published: November 2022

No disponible
Contribución al estudio de las normas de diferentes países para el cemento Portland. III.- Especificaciones físicas
Authors: Gaspar Tebar D. , Fraga Sánchez S.
Published: November 2022

No disponible
Contribución al estudio de las normas de diferentes países para el cemento Portland. IIIc.- Finura de molino
Authors: Gaspar Tebar D. , Fraga Sánchez S.
Published: November 2022

No disponible
Contribución al estudio de las normas de diferentes países para el cemento Portland. V.- Apéndice
Authors: Gaspar Tebar D. , Fraga Sánchez S.
Published: November 2022

No disponible
Contribución al estudio de la estructura del clinker de cemento portland (continuación)
Authors: Calleja Carrete J.
Published: November 2022

No disponible
Der verbrennungsvorgang im drehofen. Wege zu seiner intensivierung
Authors: Anselm Wilhelm , Fritsch W. Hans
Published: November 2022

No disponible
L’allègement des produits de terre cuite
Authors: Alviset L.
Published: November 2022

Las piezas aligeradas presentan una serie de propiedades: densidad, aislamiento térmico, etc. Que determina siempre, siempre que no se precisen, simultáneamente, grandes resistencias. Su preparación, tal como se indica en este artículo, carece de dificultades.
Wärmebilanz dar drehöfen mit wärmeaustauscher
Authors: Anselm K. Werner
Published: November 2022

No disponible
Compaction and flow of concrete
Authors: Poucher M.P.
Published: November 2022

La finalidad de las investigaciones era la preparación de un hormigón de alta calidad, con empleo de árido lo más grueso posible (lo que determina una economía en el consumo de cemento), y con una relación agua cemento lo más bajo posible, presentando, al mismo tiempo, la máxima docilidad y movilidad.
First lepol system wet process kiln in the world
Authors: Boiso J.
Published: November 2022

En Clavarria, Argentina funciona un horno Lepol, por vía húmeda, con una producción diaria de 400 toneladas. El consumo de combustible es semejante al del proceso por vía seca.
Die verwendung von chlorkalk für das bauen im winter
Authors: Savtschev L.
Published: November 2022

Se presenta un nuevo procedimiento para contrarrestar la acción nociva de las temperaturas bajas sobre los morteros y hormigones. Se Detallan su fundamento, ventajas e inconvenientes. El procedimiento es económico.
Contribución al estudio de la estructura del clinker de cemento portland (conclusión)
Authors: Calleja Carrete J.
Published: November 2022

No disponible
Errechnung des entsäuerungsgrades in vorwärmern für drehöfen aus der orsatanalyse
Authors: Weber P.
Published: November 2022

No disponible
Beitrag zur flammenphotometrischen bestimmung des caloiums
Authors: Konopicky K. , Kampa P.
Published: November 2022

No disponible
The extrusion problem
Authors: Mecka E.
Published: November 2022

Sugerencias prácticas para la sustitución de las hélices, diseño de las boquillas y funcionamiento de las galleteras.
Some practical aspects of draught
Authors: Mays G.E.
Published: November 2022

Se indica la función del tiro en cada etapa de la cocción, su efecto sobre los productos y su relación con otras variables de la combustión. Se comparan el tiro inducido y el tiro forzado. Se fijan las directrices para la cocción de diversos tamaños de tubos de drenaje.
Neuartige betonstein-fertigung in verbindung mit niederdruckdampfhärtung
Authors: Wellenstein R.
Published: November 2022

No disponible
Construcción y reparación de hornos rotatorios
Authors: Bohman W.
Published: November 2022

El empleo de la soldadura facilita la reparación de los hornos rotatorios, acortando el tiempo necesario para dicha operación. Se presentan diversos ejemplos prácticos.
Briques on béton caverneux de caleaire. Procédé Orsini
Authors: Laine G.
Published: November 2022

Fabricación y características de un nuevo tipo de bloque cavernosos, resistentes y de tabiquería de hormigón calcáreo.
Investigation of material transport in wet-process rotatory kilns by radio isotopes
Authors: Rutle J.
Published: November 2022

El empleo de isótopos permite estudiar perfectamente el desplazamiento de los materiales a lo largo del horno. en otros aspectos referentes a la influencia de diversos factores sobre el funcionamiento del horno y sobre el proceso de cocción, se llega a la misma conclusión que mediante los métodos clásicos de investigación.
Zur geschichte der mansfelder pflastersteine
Authors: Nökring F.
Published: November 2022

No disponible
Die technologie dr' kervit - platten - herstellung
Authors: Korach M.
Published: November 2022

Nuevo procedimiento de fabricación de placas de revestimiento, con características especiales (preparación por vertido, vidriado y cogió en conjunta con la base cerámica). Se pueden preparar placas de un espesor mínimo de 1 mm.
Graphic method of proportioning sands
Authors: Werner I.
Published: November 2022

No disponible
Die betriebskontroll künstlicher trecknereien
Authors: Thor P.
Published: November 2022

No disponible
Behavior of cementa and relatad materials under hydrostatic pressures up to 10.000 atmospheres
Authors: Weir C.E. , Hunt C.M. , Blaine R.L.
Published: November 2022

No disponible
Aumento de la producción de cemento y mejora simultánea de la calidad
Authors: Calleja Carrete J.
Published: November 2022

Por vía teórica también experimentalmente se llega a la conclusión de que, en general, es conveniente elevar la cifra máxima SO3 mantenida en la actualidad en la mayor parte de las normas para cemento. Esta medida es particularmente beneficiosa en el aspecto de la retracción.
Avantages de l'emploi du broyeür vibrant en céremique fine
Authors: Nossova Z.A. , Smirnova K.A.
Published: November 2022

El empleo de molino vibrante permite reducir en 50-60ºC la temperatura de cocción, reducir la tendencia al agrietamiento del vidriado y conseguir que éste sea más opaco.
Les récifs artificiels, un outil évolutif pour l’aménagement du milieu marin : approche géographique en France métropolitaine
Authors: Salaün Jessica , Pioch Sylvain , Dauvin Jean-Claude
Published: November 2022

Parmi les outils d’aménagement côtier destinés à la gestion des milieux marins, les récifs artificiels (RA), dont le Japon a initié et généralisé l’utilisation pour le développement des ressources halieutiques dès le xviie, ont été implantés en France métropolitaine pour la première fois en 1968. Depuis, une cinquantaine de projets d’aménagement côtier a vu le jour, dans des contextes territoriaux, environnementaux et socio-économiques, très différents. Fort de ces cinquante années d’expérience, il est proposé une revue des caractéristiques des RA par une approche géographique de leur déploiement en France métropolitaine. D’un point de vue chronologique, trois périodes d’immersion se distinguent : une période propédeutique d’expérimentation des RA, suivi d’une période de multiplication des sites de RA et enfin d’une période d’innovation de l’outil et des usages, poussée par une pression socio-environnementale de protection de la nature. D’un point de vue spatial, ces implantations sont très hétérogènes d’une façade maritime à l’autre, avec une diversité forte en Méditerranée et moindre en Manche. Ces variations peuvent s’expliquer par des rapports culturels à l’environnement divergents, notamment dans les modes de gestion des zones de pêche (telles que les prud’homies en Méditerranée), ou des différences morpho-géologiques des côtes (présence de substrats durs naturels ou d’épaves) et des différences dans les orientations des pêcheries (pêche côtière, hauturière, mono-spécifique, état des stocks des espèces d’intérêt halieutique). D’un point de vue sociogéographique, les immersions de RA ont été initiées pour 70 % des cas par des pêcheurs et cofinancées dans 72 % des cas par les collectivités territoriales à l’échelle régionale. Malgré une absence de planification à l’échelle nationale, les sites de RA en France ont réussi à voir le jour en s’appuyant sur les acteurs territoriaux et locaux. Enfin, cette étude montre comment les RA, en tant qu’outil d’aménagement, créent une dynamique territoriale d’échanges entre les acteurs locaux afin d’assurer une gestion durable et pérenne du territoire marin côtier.
Dynamics of Dialogue, Humanity, and Peace in the Metaverse
Authors: Lahiri Indrani , Deka Lipika , Chakraborty Nandini , Pattni Kamla , Punwani Anita
Published: November 2022

All our fundamental aspects of living a fulfilled life have become at odds with progress. This chapter will consider what are the key components of humanity, thereby addressing the fundamental question of whether metaverse going to alter our understanding of humanity, peace, and collegiality. This chapter aims to trigger a conceptual debate by applying a digital anthropological framework to examine how human beings have been socially conditioned to think, perceive, and anticipate. In doing so, the authors argue that the social construction of fear of the unknown prevents humans from critically analysing our relationship with humanity and technology. Additionally, the chapter aims to initiate some discussion around (1) metaverse and what it means in a human world; (2) will the virtually modified human beings recreate or alter humanity; (3) what would peace look like in metaverse?
Framing Public Policy in the Digital Era
Authors: Bhattacharya Pranata
Published: November 2022

In the digital era, the spatial understanding of Metaverse is necessary to figure out the justice. To understand the spatial justice, one must understand the configuration of a space and its variations. Facebook and other apps created virtual space that is more interactive. The augmented reality is essential to make the participants more real and experience reality through virtual platforms. How these space creations are accomplishing this must be investigated.
A Study of English E-Learning Courses in Improving Student Learning Performance in Higher Education
Authors: Zhao Qun , Toshiyuki Hasumi , Liu Shih-Hao , Wang Jin-Long
Published: November 2022

This study explored the impact of the fully implementing an English e-learning course on students' learning performance. Technology acceptance model was used to examine the factors influencing students' attitudes and learning performance. A sample of 1,949 students was collected. Structural equation modeling was employed for data analysis. The authors found that subjective norm, system accessibility, and e-learning self-efficacy positively affected the students' attitudes and behavioural intentions through perceived usefulness and perceived ease of use. The students' behavioural intention was positively related to learning performance. The students with higher English proficiency would lead to a stronger subjective norm-perceived usefulness relation, while a lower English proficiency would lead to a stronger relationship between perceived ease of use and perceived usefulness.
Business Analytics and Collaborative Innovation Performance in the ICT Sector
Authors: Daradkeh Mohammad
Published: November 2022

This study aims to investigate the impact of business analytics (BA) capabilities on collaborative innovation, which involves the exchange of ideas and knowledge with external sources on digital innovation platforms. Based on the resource-based view (RBV), BA capabilities were divided into three dimensions: tangible, personal, and intangible. A research model is then developed to describe the relationships among BA capabilities, collaborative innovation capabilities, and collaborative innovation performance. To test the model, data were collected through a questionnaire survey from 167 companies and analyzed using structural equation modeling (PLS-SEM). The results show that BA tangible capabilities have a positive impact on BA personal and intangible capabilities. Both BA personal and intangible capabilities are positively associated with collaborative innovation capability, which in turn was found to be a strong predictor of collaborative innovation performance. These results demonstrate the positive influence of BA in driving collaborative innovation performance.
Autocorrelation Regression Model Analysis and Selection of Cross-Border RMB Settlement From 2011 to 2020
Authors: Zhang Cheng , Hu Ni , Yan Qiang
Published: November 2022

With China's continuous opening to the outside world, changes in the international environment and the operation of the cross-border RMB settlement system (CIPS), the scale of cross-border RMB settlement has fluctuated continuously. In response to this phenomenon, the authors collected and sorted out the total amount of RMB cross-border settlement and payments from 2011 to 2020 time sequence data in China, then use five AR models including ARMA, GARCH(1.1), EGARCH(1.1), PARCH(1.1), and CARCH(1.1) to fit. The experimental results show that the four autocorrelation models all prove that the cross-border RMB settlement has autocorrelation relationship, and the long-term trend continues to grow up. According to the precision and accuracy of the five models, the ARMA model equation is one optimal prediction equation. On the basis of the ARMA model equation, and the establishment of the VENSIM system dynamics simulation model, the scale of China's cross-border RMB settlement in the next 10 years is predicted.
Damping Subsynchronous Oscillations Using a High Voltage Direct Current-Based Multi-Modal Damping Controller
Authors: Tambwe Christophe Basila , Sarma Rudiren
Published: November 2022

Conventional series capacitors in transmission lines are of paramount importance for enhancing power transfer capability. However, the major drawback of series capacitors is the induced subsynchronous resonance phenomenon in power systems. This phenomenon affects nearby turbogenerator shafts and severely limits their reliability. Also, the controls of High Voltage Direct Current links are considered as a potential source of subsynchronous oscillations. This paper investigates the performance of a multimodal damping controller to stabilize unstable torsional modes in combination with a Power System Stabilizer for inertial mode damping. This research uses time-domain simulation-based multimodal damping controller design methods, namely the test signal and phase correction methods. These two methods involve injecting a test signal at a frequency of interest into the rectifier current control loop and measuring its phase difference with the electromagnetic torque, thus providing corresponding compensators to minimize the resulting angle. This work uses Power System Computer-Aided Design for time-domain simulation and Fast Fourier Transforms Analysis to conduct the phase correction method and verify controller performance.
Combined Thermal Performance Enhancement of Parabolic Trough Collectors Using Alumina Nanoparticles and Internal Fins
Authors: Yehia Mohamed H. , Hassan Muhammed A. , Abed Nabeel , Khalil Adel , Bailek Nadjem
Published: November 2022

Parabolic trough collectors are the currently dominant technology for concentrated solar power systems, employed to produce thermal energy at low to medium temperatures (up to 400°C). Extensive research has been carried out to enhance the thermal efficiency and reduce the power production costs of these concentrators. However, there is a lack of studies on combined passive performance enhancement using alternative fluids and absorber designs. In this study, the thermal performance of a full-sized parabolic trough collector is analyzed with the presence of internal longitudinal fins in combination with the use of oil-based nanofluid (Al2O3-Syltherm 800) of different volume fractions. The governing equations are numerically solved using ANSYS FLUENT 17.1 software and the Monte-Carlo ray-tracing (MCRT) model was used to apply the non-uniform heat flux profile over the external surface of the solar receiver. The results show that both techniques enhance thermal energy utilization and reduce radiative and convective thermal losses, resulting in higher thermal efficiency, but also larger pressure losses. The thermal performance is enhanced by 0.1-1.16 % with nanofluid, up to 6.8 % with internal fins, and by up to 7.25 % when both techniques are adopted. These enhancements are attributed to the reduced mean circumferential temperature of the absorber tube.
Experimental Study on the Behaviour of Short Columns Confined by Waste Plastic Bags-Epoxy Composites
Authors: Shahzad Shaban , Hameed Rashid , Gillani Syed Asad Ali , Riaz Muhammad Rizwan , Hameed Umair , Gulzar Khurram
Published: November 2022

An experimental study was carried out to investigate the behaviour of short column confined by waste plastic bags and nylon strips and findings of this study are presented in this paper. Eight reinforced concrete (RC) short columns were casted. Among them two specimens were named as control, while remaining six specimens were divided into three groups [two specimens for each group] based on different confinement techniques investigated in this study. In retrofitting technique 1 (RT-1), RC short columns were externally confined by full wrap of plastic bags, while in retrofitting techniques 2 (RT-2) and 3 (RT-3), confinement was provided to the short columns by stirrups of nylon and plastic bags with 25 mm clear spacing, respectively. The testing under compression loading was performed on UTM of 100T capacity. From the results obtained, seismic parameters such as ductility, fracture energy before peak and after peak, factor k* and load-displacement response were studied. The results indicated that RC short column confined by RT-1 (full wrap) gives better performance in terms of ductility and fracture energy after peak. Increase in the ductility of RT-1 specimen was about 25% as compared to the control one. Moreover, post-peak fracture energy exhibited by short column confined through techniques RT-1 and RT-2 was 132 and 125 N/mm as compared to control one with 14 N/mm of fracture energy. The experimental observations further indicated that the failure of control specimen was sudden showing high brittleness while the failure of confined specimens by RT-1 and RT-2 techniques was observed to be gradual giving some warning before final failure.
Persistent unilateral diaphragmatic paralysis in the course of Coronavirus Disease 2019 pneumonia: A case report
Authors: Skouvaklidou Elpida , Neofytou Ioannis , Kipourou Maria , Katsoulis Konstantinos
Published: November 2022

Coronavirus Disease 2019 infections can cause a wide range of symptoms, particularly in the respiratory system. Diaphragmatic paralysis is a rare condition that is poorly documented in the literature. We present the case of a 38-year-old Caucasian male adult who developed unilateral diaphragmatic paralysis during the course of the disease. The patient presented to the Emergency Department with fever, cough, and dyspnea, was admitted, and was immediately fitted with a high flow nasal cannula. When his condition worsened eight days later, he was admitted to the Intensive Care Unit and a tracheostomy was performed. A CT scan of the chest revealed significant left diaphragm elevation. On the 48th day, the patient gradually improved and was discharged. The paralysis of the diaphragm persisted three months later in the follow-up examination. This case illustrates a possible neuromuscular virus invasion that may have an impact on the patient's health after discharge.