bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of Warm-Ups with Weighted Vests and Resistance Bands on Physical Fitness and Combat Ability of Kumite Karate Athletes
Authors: Ioannides Christos , Despotopoulou Chrysanthi , Hadjicharalambous Marios , Zaras Nikolaos
Published: March 2024

The purpose of this study was to investigate whether a dynamic warm-up either with weighted vests (WVs) or with resistance bands (RBs) may enhance the physical fitness and combat ability of kumite karate athletes. Nine male athletes (age range from 16 to 30 years), participated in this study. Athletes followed three different warm-up programs in a randomized order: (a) with their body mass only (C), (b) with a WV of 10% load of their body mass and (c) with a wearable RB of 10% tension of their body mass. Following the warm-up, athletes performed the following tests: countermovement jump (CMJ), standing long jump (LJ), punch and kick reaction time, bench press throws, T-Half test and the kick frequency test. CMJ remained unaltered following the WV and RB warm-up compared to the C. Standing long jump increased significantly following the RB warm-up compared to the C (2.2 ± 1.7%, p = 0.011). Punch reaction time was significantly shortened following the RB warm-up compared to C (−7.3 ± 5.9%, p = 0.019). No changes were observed for kick reaction time, bench press throws or the T-Half test. The kick decrement index, measured from the kick frequency test, was significantly decreased following the RB warm-up compared to the C (33.1 ± 20.2%, p = 0.011). These results suggest that an RB warm-up may significantly enhance the physical fitness and combat ability in kumite karate athletes.
A Study of the Composting Capacity of Different Kinds of Leathers, Leatherette and Alternative Materials
Authors: Sardroudi Nima Pourrasoul , Sorolla Sílvia , Casas Concepció , Bacardit Anna
Published: March 2024

The leather industry is in the midst of a shift towards sustainability and circular economy principles, placing a strong emphasis on the biodegradability of its products. There has been a notable upswing in the traction gained by eco-friendly leather alternatives. Concurrently, a diverse spectrum of commercial substitutes for conventional leather has surfaced, encompassing a range from synthetic constructs like leatherette to plant-based options. The objective of this study was to evaluate the composting capabilities of genuine leather and three alternatives, namely leatherette, Piñatex®, and Desserto®, in conjunction with leather subjected to treatment with alginate derivatives. The composting evaluation was conducted in accordance with ISO standards, simulating an intensive aerobic composting process. Results revealed that bovine leather samples treated with alginate derivatives underwent complete degradation within 21 to 25 days, and conventional wet-blue production resulted in total degradation after 31 to 35 days. In contrast, vegetable-tanned bovine leather manifested initial signs of degradation after 60 days, but fell short of achieving complete disintegration even after a protracted 90-day incubation period. Alternative materials showed no degradation after the 90-day composting test, indicating a potentially lower degradation capacity compared to leather, likely attributed to the presence of non-biodegradable materials like PU and PVC, among others. The negligible degradation observed in alternative materials after 90 days of composting highlights their inferior composting performance compared to leather.
The Economic Potential of Agrivoltaic Systems in Apple Cultivation—A Hungarian Case Study
Authors: Chalgynbayeva Aidana , Balogh Péter , Szőllősi László , Gabnai Zoltán , Apáti Ferenc , Sipos Marianna , Bai Attila
Published: March 2024

Agrivoltaic systems (AVS) allow the simultaneous use of land—as a limited resource—for crop production and electricity generation. This paper introduces the development prospects of AVS in Hungary with insights into international trends. The most important part is a complex economic analysis and a unit cost analysis of a 38 MWp capacity AVS, considering the most typical basic data in electricity and apple production. The applied risk analysis is based on a Monte Carlo simulation, the distribution function, and probabilities. To introduce the economic facet of the competitiveness of AVS, a comparative analysis was carried out between AVS, ground-mounted photovoltaic (GM-PV) systems, and conventional apple production systems (ConAPS). In the most probable scenario, the AVS was financially attractive (NPV = 70 million EUR under 30 years). Our correlation analysis shows that feed-in tariff (FIT) price and the role of financing are considered the dominant economic factors. A favorable FIT price enhances the profitability of AVS; however, it makes GM-PV systems more profitable compared to AVS, so it negatively affects the competitiveness of AVS systems. AVS operations result in a more balanced unit cost of apples and of electricity compared to the independent operation of GM-PV systems and of ConAPS; in addition, it allows for land saving and more intensive land use.
Volatilization Kinetics of Zinc from the Flotation Products of Low-Grade Lead–Zinc Oxide Ore during Carbothermic Reduction
Authors: Zeng Peng , Wang Chengyan , Li Minting , Wei Chang , Ma Baozhong , Li Xingbin , Deng Zhigan , Wei Xuchang
Published: March 2024

Zinc extraction from oxide ore has been paid more and more attention to due to the exhaustion of zinc sulfide ore resources. In this work, the volatilization kinetics of Zn from the flotation products of low-grade lead–zinc oxide ore during carbothermal reduction in the temperature range of 900–1300 °C were investigated. The phase transformation in briquettes during the reduction process was investigated by XRD and EPMA. The results showed that the transformation of ZnS by CaO may begin within the temperature range of 900–1050 °C, with the main occurrence observed in the range of 1050–1250 °C. The kinetics behavior of Zn volatilization was associated with the phase transformation. The volatilization of Zn was controlled by the interfacial chemical reaction within 900–1150 °C. As the reaction proceeded, the generation of the product layers (CaS, FeS and new slag phase) impeded the internal diffusion of Zn, CO and CO2. At this time, internal diffusion served as the rate-controlling step for Zn volatilization in the range of 1150–1300 °C. Hence, a staged kinetics model of Zn volatilization during carbothermal reduction in the form of carbon-bearing briquettes was established, and the apparent rate constants (k(T)) and activation energies (Ea) were obtained. This work provides a scientific basis for the flotation products treatment by carbothermal reduction and is of great significance in improving the sustainability of resources in the zinc smelting industry.
Sustainable Watershed Management: Assessing the Impact of Data Precision on Sediment Transport in the Oostanaula Creek Watershed, Tennessee
Authors: Bauer Miroslav , Jáchymová Barbora , Krása Josef , Bynum Karina , Schwartz John S. , Dostál Tomáš
Published: March 2024

This study applies the WaTEM/SEDEM model, a watershed-scale model based on the Universal Soil Loss Equation (USLE), to enhance sustainable watershed management by identifying high-erosion-risk areas for targeted mitigation at various scales. It focuses on identifying potential errors in using statewide or worldwide land use data layers derived from remote-sensing algorithms and inaccuracies in the spatial distribution of cropland and soil types resulting in misinterpretation of sediment yields. These model limitations emphasize the need for field validation and precise input data, particularly stream data, to improve the reliability of these models. The study examines hydrologic rainfall-runoff processes in Tennessee’s 182 km2 Oostanaula catchment using various data sources, including the National Land Cover Database (NLCD), the European Space Agency WorldCover dataset (ESA), and manual field surveys. Three modeling scenarios were evaluated, with and without stream topology corrections, using the WaTEM/SEDEM model. It details the global data used, the methodology of the field survey, the simulation and validation of data, and the critical point identification. Significant discrepancies in long-term sediment transport predictions were found, depending on the land use data source. This study addresses watershed model validity and potential errors and recommendations for the use of globally available data.
Sustainable Production of Carboxymethyl Cellulose: A Biopolymer Alternative from Sugarcane (Saccharum officinarum L.) Leaves
Authors: Churam Teerapong , Usubharatana Phairat , Phungrassami Harnpon
Published: March 2024

This study explores the potential of sugarcane (Saccharum officinarum L.) leaves (SCLs), a significant agricultural waste, for the sustainable production of carboxymethyl cellulose (CMC) utilizing an innovative approach of carboxymethylation with monochloroacetic acid and varying sodium hydroxide (NaOH) concentrations (ranging from 20 to 60 g/100 mL). The optimal carboxymethylation condition was identified as 40 g/100 mL NaOH, which yielded the highest degree of substitution (DS = 0.86). Furthermore, a higher ash content in the obtained CMC indicated significant carboxymethyl substitution within the structure. The chemical structure of cellulose and the resulting polymers were characterized using Fourier transform infrared spectroscopy (FTIR). The FTIR spectrum exhibited characteristic peaks of carboxymethyl groups and their salts at wavenumbers of 1588–1591 cm−1 and 1413–1415 cm−1, respectively. The analyses from X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) revealed detailed insights into the crystallinity and morphology of carboxymethyl cellulose (CMC). The levels of heavy metals, including arsenic, lead, cadmium, and mercury, in the purified CMC were assessed using inductively coupled plasma mass spectrometry (ICP-MS) and were found to be within the recommended WHO/FAO limits, except for lead, which exceeded permissible levels. The prepared CMC demonstrated high purity at 99.34%, surpassing the 98.00% purity requirement for commercial-grade CMC. This product exhibits strong potential for diverse industrial applications, including paper coating, textile sizing and printing, ceramic glazing, and various uses in the oil industry.
Evaluation of Two Vaccines against Foot-and-Mouth Disease Used in Transcaucasian Countries by Small-Scale Immunogenicity Studies Conducted in Georgia, Azerbaijan and Armenia
Authors: Foglia Efrem Alessandro , Chaligava Tengiz , Aliyeva Tamilla , Kharatyan Satenik , Tranquillo Vito , Pötzsch Carsten , van Maanen Cornelis , Rosso Fabrizio , Grazioli Santina , Brocchi Emiliana
Published: March 2024

In countries endemic for foot-and-mouth disease (FMD), routine or emergency vaccinations are strategic tools to control the infection. According to the WOAH/FAO guidelines, a prior estimation of vaccine effectiveness is recommendable to optimize control programs. This study reports the results of a small-scale immunogenicity study performed in Transcaucasian Countries. Polyvalent vaccines, including FMDV serotypes O, A (two topotypes) and Asia1 from two different manufacturers, were evaluated in Georgia, Azerbaijan and Armenia. Naïve large and small ruminants were vaccinated once and a subgroup received a second booster dose. The titers of neutralizing antibodies in sera collected sequentially up to 180 DPV were determined through the Virus Neutralization Test versus homologous strains. This study led to the estimate that both the vaccines evaluated will not induce a protective and long-lasting population immunity, even after a second vaccination, stressing that consecutive administrations of both vaccines every three months are mandatory if one aspires to achieve protective herd immunity.
Influenza Vaccine Uptake in Italy—The 2022–2023 Seasonal Influenza Vaccination Campaign in Italy: An Update from the OBVIOUS Project
Authors: Capodici Angelo , Salussolia Aurelia , La Fauci Giusy , Di Valerio Zeno , Montalti Marco , Odone Anna , Costantino Claudio , Larson Heidi J. , Leask Julie , Lenzi Jacopo , Manzoli Lamberto , Gori Davide ,   on behalf of the OBVIOUS Board
Published: March 2024

Influenza is a significant public health concern, with Italy being profoundly impacted annually. Despite extensive vaccination campaigns and cooperative initiatives between the Public Health Departments of Local Healthcare Authorities and family physicians, low vaccine uptake rates persist. This study builds upon the OBVIOUS project, providing an updated picture of influenza vaccine uptake in Italy through a representative sample. A cross-sectional computer-assisted web interviewing (CAWI) survey of 10,001 Italian citizens was conducted between 31 March and 5 June 2023. Our findings underscore the negative impact of a lack of awareness that a person is in a priority group for influenza vaccination (−26.1 percentage points in vaccine uptake) and the profound influence of social circles on vaccination decisions (−5 percentage points when unfavorable). Medical professionals played a pivotal role, with recommendations from family doctors significantly promoting vaccine uptake (+20.2 percentage points). Age, chronic conditions, and socio-demographic factors also influenced vaccination behaviors. For children, parental negative perceptions regarding the flu (−10.4 percentage points) and vaccine safety (−23.4 percentage points) were crucial determinants. The present study emphasizes the need for a comprehensive approach addressing awareness, societal beliefs, and tailored medical advice to enhance vaccination rates and protect public health in Italy.
Micro-Vibration Analysis, Suppression, and Isolation of Spacecraft Flywheel Rotor Systems: A Review
Authors: Han Qinkai , Gao Shuai , Chu Fulei
Published: March 2024

In this paper, the main excitation sources of micro vibration of spacecraft flywheel rotor systems (SFRSs) are briefly described, and then the research progress is systematically reviewed from four perspectives, including modeling methods, suppression means, vibration isolation techniques, and ground simulation tests. Finally, the existing problems of current research and the direction of further research are given to better serve the micro-vibration prediction and sensitivity analysis of existing models, and provide reference points for the micro-vibration suppression and isolation of the next generation of high-precision spacecraft.
Foreign trade in tourism services of Portugal
Authors:   Russian Economic University named after. G. V. Plekhanov, Moscow, Russian Federation, Tsuglevich K. V.
Published: March 2024

EU members have a common customs union, a single market (in which goods, people and capital move freely), a common trade policy, a common agricultural policy and a common currency (the euro). In addition, the EU has taken steps to develop a common foreign and security policy. The EU currently faces a number of political and economic challenges, including slow growth and persistently high unemployment in many EU countries. Portugal, as a member of the EU, is experiencing a whole range of problems, like other member countries. But due to the peculiarities of the economy, these problems have their own specifics, including those related to the development of the tourism sector and its role in the country’s economy. In the article, the author examines this specificity and draws conclusions about the characteristics of Portugal.
Foreign economic relations of Russia with China and India: modern aspect
Authors:   Russian Peoples’ Friendship University named after Patrice Lumumba, Moscow, Russian Federation, Murtuzaliev S. S. , Murtuzalieva S. Yu. ,   Russian Peoples’ Friendship University named after Patrice Lumumba, Moscow, Russian Federation; Russian Economic University named after. G. V. Plekhanov, Moscow, Russian Federation
Published: March 2024

Russia’s foreign economic relations with India and China are developing at a rapid pace and have only intensified in recent years due to sanctions. But the tourism sector remains without due attention, which, on the basis of mutually beneficial cooperation, could develop at a more active pace. The article examines the development of Russian foreign trade and possible prospects for the development of international tourism.
Experimental studies of the environmental safety of forest vehicles with wheeled, tracked and semi-tracked propulsion when working on slopes
Authors:   Arctic State Agrotechnological University, Gurye A. Y. , Grigorev I. V. ,   Arctic State Agrotechnological University, Dmitriev A. S. ,   St. Petersburg State University of Architecture and Civil Engineering, Kalyashov V. A. ,   St. Petersburg State University of Architecture and Civil Engineering, Dolzhikov I. S. ,   St. Petersburg State University of Architecture and Civil Engineering, Dyachenko V. M. ,   St. Petersburg State University of Industrial Technologies and Design
Published: March 2024

The article presents the results of a study of the impact of forest machinery movers on the soils of logging areas. During the study, various indicators were measured and analyzed, such as the angle of inclination, soil porosity and particle density, as well as a comparison of different types of propulsion: wheeled, semi-tracked and tracked. The results showed that wheeled vehicles have a significant impact on these indicators. The passage of tracked vehicles has less impact on soils, compared with wheeled and semi-tracked types of forest vehicles. These results indicate a potential disturbance of the soil structure and a change in its physico-chemical properties as a result of the use of forest machinery. The results of the study are important for understanding the impact of technology on the ecological state of forest ecosystems and for developing effective strategies for sustainable forest management. Further research in this area will make it possible to refine these results and determine the optimal methods of using forest machines with minimal impact on soils.
Insights into the current management of dyslipidemia from a clinical pharmacological perspective
Authors: Le Chuyen , Nguyen Thi Lan Nhi , Nguyen Le Hong Van , Do Thi Hong Diep , Dang Thi Cat Vy
Published: March 2024

The low-density lipoprotein cholesterol (LDL-C) is established as a causative agent of atherosclerotic cardiovascular disease (ASCVD) and lowering plasma LDL-C levels represents the main approach to reduce the risk of cardiovascular events. Statins remain the cornerstone of drug therapy for dyslipidemia. Although moderate- to high- intensity statin therapy has demonstrated consistent benefits for secondary prevention of cardiovascular events, statin monotherapy is insufficient to achieve the guideline-recommended LDL-C levels for high- and very high-risk patients. Some patients cannot tolerate statins, especially when taking long-term high doses. Several non-statin drugs that have a complementary mechanism of action to statins are now available, including ezetimibe, monoclonal antibodies targeted to proprotein convertase subtilisin/kexin type 9 (PCSK9 mAb), and, more recently, inclisiran, bempedoic acid, and evinacumab. Considering the recommendations from guidelines by domestic and international cardiovascular associations, combining these drugs should be contemplated to attain treatment goals for patients.
Key words: dyslipidemia, atherosclerotic cardiovascular disease, lipid-lowering drugs, familial hypercholesterolemia, hypertriglyceridaemia, nonstatin therapies.
The correlation between ambulatory blood pressure parameters and cardiovascular risk factors in older adults with high-risk hypertension
Authors: Tran Van Nam , Hoang Huy Truong , Le Thi Bich Thuan
Published: March 2024

Objective: To explore the correlation of 24-hour ambulatory blood pressure (BP) monitoring (ABPM) parameters and cardiovascular risk factors in older adults with high-risk hypertension.

Material and method: A cross-sectional study was conducted on 96 older adults (≥ 60 years old) with treated high-risk hypertension. Socio-demographic and cardiovascular risk information were gathered. The patients were performed 24-hour ABPM.

Results: The mean age was 70.88 ± 7.86 years, and 64.6% were women. The prevalence of cardiovascular risk factors was as follows: dyslipidemia: 80.2%, family history of hypertension: 54.2%, diabetes mellitus: 51%, smoking: 24%, prior stroke: 11.5%. Significant differences in 24-hour, awake, and sleep systolic BP were observed between men and women. There were significant correlations between 24-hour mean systolic BP with age (r = 0.229, p = 0.025), dyslipidemia (r = 0.223, p = 0.029), family history of hypertension (r = 0.214, p = 0.036), BMI (r = 0.212, p = 0.039), waist circumference (r = 0.226, p = 0.027) and creatinine level (r = 0.207, p = 0.043). There were significant correlations between 24-hour mean diastolic BP with BMI (r = 0.289, p = 0.004) and prior stroke (r = -0.224, p = 0.029). There were significant correlations between 24-hour mean BP with BMI (r = 0.268, p = 0.009), waist circumference (r = 0.220, p = 0.032) and prior stroke (r = -0.215, p = 0.036).

Conclusion: There were significant correlations between ABPM parameters and cardiovascular risk factors in older adults with high-risk hypertension.

Key words: 24-hour ambulatory blood pressure, cardiovascular risk factors, high-risk hypertension, older adults, correlation.
Recortes histórico-matemáticos acerca dos polinômios para sala de aula
Authors: Nunes João Henrique Xavier , Situba Maurício Pereira , Chaquiam Miguel
Published: March 2024

O ambiente educacional matemático apresenta diversos mecanismos e métodos de como ensinar matemática para pessoas alicerçadas à educação, e com isso, o diagrama-metodológico apresenta propostas acerca do uso da História da matemática como recurso didático para construção de variados objetos matemáticos, a partir da exposição de reflexões, textos biográficos, abordagens e postulados matemáticos. Diante desta narrativa, o presente trabalho abordará os alicerces e conceitos dos Polinômios por meio da construção de um texto em que se evidenciarão relatos, experiências e vestígios das pesquisas de muitos estudiosos que fazem parte da composição da estruturação polinomial ao longo da história, organizando-os e sintetizando o diagrama como recurso didático para seu uso em sala de aula. A compreensão avaliativa desta pesquisa será evidenciada na proposição de um texto sintetizando a história da evolução dos estudos acerca dos Polinômios por via de seus personagens, fatores socioculturais, epistemológicos e didáticos, em conjunto, a presença de atividades para compor o processo didático apresentado de maneira efetiva, tendo em vista a visibilidade do uso deste recurso em sala de aula.
Preconceito e outros contos, de Albertino Bragança: uma ponte entre tempos
Authors: Fonseca Fernanda dos Santos , Lima Natália Leão
Published: March 2024

O livro Preconceito e outros contos (2014), do escritor são-tomense Albertino Bragança, oferece ao leitor -além de uma fruição estética singular- uma experiência com a história da cultura descrita, permitindo que este consiga, através da obra presente, visitar o passado colonial e vislumbrar, junto com os personagens, um futuro mais justo e feliz. Por esta razão, esta pesquisa objetiva realizar um estudo da obra supracitada, sublinhando trechos que são como portas que, quando atravessadas (lidas), podem nos levar ao encontro dos mais profundos sentimentos que transbordam da história de São Tomé e Príncipe. Não pretendemos impor significados ou anacronicamente estabelecer sentidos aleatórios, mas refletir sobre como os contos presentes neste livro estabelecem uma ponte entre tempos[1], nos fazendo, através da compreensão do passado, entender o presente e desejar um futuro específico: que seja mais livre e pacífico. Para auxiliar a análise, utilizamos referencial teórico embasado em Araújo; Neto (2020), Castro-Gómez e Grosfoguel (2007), Chaves (2000), Fanon (2008), Gilroy (2001), Mbembe (2014), Medeiros (2012), Mudimbe (2013) e Ramos (2011). Acreditamos que, ao longo da leitura, a comparação com o processo de colonização nacional seja natural e, talvez, oportuna para pensarmos a linha do tempo brasileira com mais criticidade, embora esperemos que essa inferência não nos distraia do ato central no qual, devidamente atentos e dispostos, visitaremos a realidade da nação são-tomense.

 

[1] Afirmação feita primeiramente pela escritora Inocência Mata, responsável pelo prefácio da Obra (2014)
Uma abordagem gráfica para resolução de sistemas lineares com duas incógnitas para alunos do oitavo ano do ensino fundamental
Authors: Silva Marcelo Roberto da , Pavani Victor Vaz
Published: March 2024

A maioria dos alunos do 8º ano do Ensino Fundamental, quando se depara com um sistema linear, sente dificuldade para resolvê-lo, pois envolve um conteúdo bastante abstrato: letras e números numa mesma sentença matemática. Neste trabalho, apresentaremos uma abordagem gráfica para a resolução de sistemas lineares de duas equações, com a utilização de papel quadriculado, de tabelas e do software GeoGebra. Abordaremos a história do plano cartesiano, a resolução de exercícios com sistemas lineares, a ferramenta digital GeoGebra e, para finalizar, apresentaremos um roteiro contendo a proposta de uma atividade elaborada com uma estrutura passo a passo, abordando graficamente o sistema linear. Esperamos que este trabalho contribua para o desenvolvimento do aluno e facilite o seu aprendizado.
Dissemination event on research in fluorides and dental fluorosis in Latin America - Santiago, Chile, October 18, 19 and 20, 2023
Authors: Vivian Gallará Raquel , Hugo Ponce Rubén , Farith González-Martinez , Consuelo Fresno Maria , Ana Armas-Vega , Eleanor Velez Maria , Heriberto Núñez , Rosmeri Salas Juana , Emeterio Marino , Ismael Yévenes
Published: March 2024

The activities developed in the Dissemination Day of the FONIS SA21I0117 project called “Academic dissemination events of the Faculty of Dentistry of the University of Chile and entities participating in the study with foreign professors” are presented with the Agenda: Research in Fluorides and Dental Fluorosis”. This activity took place on October 18, 19 and 20, 2023 at the Faculty of Dentistry of the University of Chile, Santiago, Chile (1). The activities carried out included a: I) Symposium on “Dental Fluorosis in Latin America”, with the participation of researchers from Argentina, Chile, Colombia, Ecuador, Paraguay and Peru. II) Seminar on “Feeding in children from 0 to 12 months in Chile” and III) Presentation of results of research on “Fluorides” and Fluorosis developed in Latin American countries. In the fluorosis Symposium section, six research experiences were presented by researchers from 6 presentations were made from Argentina, Colombia, Chile, Ecuador, Paraguay, and Peru. At the seminar on Nutrition in children under 1 year of age in Chile there were three presentations from three government entities in the country.  The presentations of free works on fluorides and fluorosis in Latin America included one work from Argentina, two from Chile, one from Colombia, two from Ecuador, one from Brazil, and one from Peru. As the production of scientific works during the event was extensive and very varied, on this occasion we will present only the expanded summaries of the round table on “Dental Fluorosis in Latin America”.
Residual phytotoxicity effects of different integrated herbicides management in soils from field-treated plots and post-harvest field
Authors: Chhodavadia Sunilkumar
Published: March 2024

Soil residual phytotoxicity of commonly used herbicides in cotton crop in India were investigated through bioassay. Pendimethalin at 900 g a.i. ha-1, oxyfluorfen at 180 g a.i. ha-1, oxadiargyl at 90 g a.i. ha-1, quizalofop-ethyl at 40 g a.i. ha-1, imazethapyr at 75 g a.i. ha-1, propaquizafop at 50 g a.i. ha-1 and glyphosate at 960 g a.i. ha-1 were applied to field plots of 6.0 x 6.0 m2. Sorghum and cucumber were used in the bioassay and succeeding crops groundnut, green gram & pearl millet to test the residual effect of herbicides in the soil of the treated plots and post-harvest field. Soil, sampled at 30 day after treatment (DAT) for pre emergence herbicide and until 2 weeks (WAT) for post emergence herbicide later, show significant affect the seed germination and seedling development stage of sorghum and cucumber. There was no residual toxicity of pre and post-emergence herbicides as observed through field bioassay after harvesting cotton crop and it was found safe to grow groundnut, green gram and pearl millet as succeeding crop.
Physico-chemical bases and mathematical modeling of degassing processes in out-of-furnace steel processing
Authors: L Kamkina , O Velichko , V Kamkin
Published: March 2024

The object of research is the processes of vacuum treatment of liquid steel after its release from the
steelmaking unit.
The purpose of the work is to study the processes of degassing of liquid steel under vacuum and optimize the conditions
for reducing the gas saturation of the metal.
The research method is the use of a dynamic mathematical model, developed taking into account the provisions of
process limitation by diffusion links of the metal - gas phase boundary transfer.
Mathematical models of degassing of metal in ladles with argon purge have been developed, taking into account the
distribution of gases from metal according to three articles - in CO bubbles, in argon bubbles and through the open
surface of the metal. In all variants of change of technological parameters blocking of a considerable part of a surface of
a section of a metal - gas phase by a stream of oxygen is observed. This is because oxygen flows are about an order of
magnitude higher than hydrogen flows. At change of technological parameters there is a process of self-regulation of
redistribution of streams of hydrogen and oxygen. This is primarily due to the large deviation of the reaction of CO
formation from equilibrium.
When replacing argon in the purge gas with nitrogen, the behavior of CO and hydrogen in the bubbles during vacuum
treatment of the metal remains almost the same. The basis of the products of the decarburization reaction is CO. As
oxygen is removed from the metal, the CO content in the purge gas bubbles decreases, and due to this, the hydrogen
and nitrogen content increases. The content of CO and hydrogen in the bubbles of the purge gas does not depend on
the ratio of argon and nitrogen in the vacuum treatment. The optimal ratio of the purge mixture can be changed
depending on the grade of steel being smelted.
Comparison of calculated and experimental data indicates a fairly high adequacy of the model in kind
An Importance–Performance Analysis Approach to a Tourism Destination: the Case of Lisbon Metropolitan Area, Portugal
Authors: Rosário João Ferreira do , Severino Filipe Segurado , Nunes Sandra , Santos Zélia Raposo , Costa Teresa , Calisto Maria de Lurdes
Published: March 2024

Pull factors, the attributes of a specific location, matter in tourism. These factors encompass the distinctive characteristics and alluring features that attract tourists to a destination, their importance and performance influencing the decision-making process and overall experience. A clear comprehension of this concept is crucial for destinations' economic vitality as they compete for tourists and strive for economic expansion and employment prospects. Indeed, an in-depth knowledge of these factors' importance and performance underscores the need for regions to adjust their approach to evolving tourist preferences. This adaptation is crucial to fostering responsible and sustainable tourism practices that safeguard cultural and natural resources. However, besides learning about the factors considered critical by tourists to visit a location, it is paramount to analyse how they evaluate the performance of each of these factors while staying there.This study focuses on the Lisbon Metropolitan Area (LMA), Portugal, and the findings will provide essential insights into destination competitiveness, sustainable tourism development, and the creation of unique travel experiences. As a destination that gained popularity, attracting tourists from all over the world, it is necessary to comprehend the specific factors that contribute to this vibrant region's allure and how it performs regarding them. The research will use the Importance-Performance Analysis to make data interpretation accessible and suggest relevant measures to improve competitiveness based on optimising the allocation of resources among the various factors/attributes analysed. The research incorporates numerous criteria categories, including historical significance, urban appeal, natural scenery, culinary experiences, cultural heritage, and aspects like streets' cleanliness, transport availability, or health emergency infrastructures. The study's conclusions will impact Lisbon region's (LMA) tourism and destination management. By understanding what factors are more important for tourists that visit the area and their evaluation of the performance of each of these factors, stakeholders can improve marketing, infrastructure, and the visitors' experience to promote sustainable development and maintain Lisbon's standing as a top tourist destination for rewarding and enlightening experiences. Relevant data is also provided to inform future tourism initiatives. This study adds to the academic discussion of location competitiveness and unique travel experiences.
PENDAPATAN DAN KELAYAKAN USAHATANI PADI DI DESA LETBAUN KECAMATAN SEMAU KABUPATEN KUPANG
Authors: Kollan Ermi I , Nampa I Wayan , Chamdra Santhy
Published: March 2024

This research was carried out in Letbaun Village, Semau District, Kupang Regency. In August-September 2022. The research aims to determine (1) the size of farmers' income and (2) the feasibility of rice farming in Letbaun Village, Semau District, Kupang Regency. Data was collected by interviewing 60 farmers (Census). Data analysis was carried out in a quantitative descriptive manner. The results showed that the average income of the respondent,s pet rice farming in Letbaun village, Semau district was of IDR .6,488 148.75, while the income per hectare received by respondent farmers was of IDR.10.191.439. Rice farming in Letbaun Village, Semau District, Kupang Regency worth cultivating with and R/C Ratio of 3.64. Rice production is greater than BEP production (76697 kg > 21,080kg) and the rice price of IDR 7,000/kg is above the BEP price of IDR. 1,924/kg.And the results of the research, rice farming in Letbaun Village, Semau District, Kupang Regency, is feasible to work on.
MANAJEMEN PEMBERDAYAAN SUMBER DAYA MANUSIA DALAM PEMELIHARAAN DAN PASCA-PANEN TANAMAN KELOR PADA KELOMPOK USAHA MAJU BERSAMA DESA NOELBAKI
Authors: Benu Yasper Anderias , Nendissa Doppy Roy , Pudjiastuti Sondang S.P.
Published: March 2024

Moringa is a plant that has many benefits and is easy to develop because it can grow in a variety of land conditions, but in its development there are still many deficiencies where the development process is not accompanied by the application of management of human resources. The purpose of this study is to determine the implementation of management and empowerment strategies for human resources in the Maju Bersama Business Group in Noelbaki village. This study uses ordinal scale analysis, by analyzing the level of participation of members of the Maju Bersama Business Group through questionnaires and interviews and then assessed with scoring criteria. The results showed that in the joint-progress business group, the strategy of empowerment and management of human resources was not implemented properly, where the level of role of human resources in maintenance and post-harvest showed that 2 people were actively involved.
PENENTUAN HARGA JUAL KOPI BUBUK ARABIKA FLORES BAJAWA DI KOPERASI SERBA USAHA FA MASA DESA BEIWALI KECAMATAN BAJAWA KABUPATEN NGADA
Authors: Putri Yuliana Harisna , Kapa Maximillian M.J. , Bano Maria
Published: March 2024

This research was carried out at the Fa Masa, Beiwali subdistrict, Bajawa district, Ngada Regency, in May-June 2023. The purpose of this study was to find out 1) Determination of the selling price of Arabica Flores Bajawa ground coffee at the Fa Masa and 2) The difference profit derived from each package size from the sale of Flores Bajawa Arabica Coffee Powder at the Fa Masa. The data collected is in the form of primary and secondary data. Primary data was obtained through interviews with informants, namely managers and employees who work at the Fa Masa and secondary data obtained from jurnal literature, and previous research. To answer the first objective, the Full Costing method, and objectived were used. Secondly, the qualitative descriptive analisis method was used The results of the research showed that Fa Masa multi-purpose cooperative determiners the selling price of ground coffee packaging sizes at a price namely for a 500 gram packaging for IDR  90.000, a 250 gram packaging for IDR 45.000 and 100 gram for IDR 20.000. the profits obtained and sales of coffee in 500 gram packages amounted to Rp. 1,838,555, while profits from sales of 250 gram and 100 gram packages amounted to Rp. 631,005, and Rp. 238,055.
Taktiksel Şehircilik: Kamusal Mekanları (Nasıl) Dönüştürür (Mü)?
Authors: SEVİNÇLİ Nalan , AKSOY Anıl , POLAT Sibel
Published: March 2024

Hızlı kentleşmeyle birlikte kamusal mekanlar özelleşme, trafik baskısı altında otopark alanlarına dönüşme, terkedilerek güvensiz alanlar haline gelme veya bakımsızlık nedeniyle eskime gibi pek çok problemle karşılaşmaktadır. Halbuki topluma ifade özgürlüğü sağlayan kamusal mekanlar, insanların sosyalleşme, dinlenme, spor yapma, oyun oynama, doğayla etkileşim kurma gibi ihtiyaçlarının karşılanmasında önemli roller üstlenmektedir. Kamusal mekanların tasarımında/dönüştürülmesinde tavandan tabana doğru ilerleyen bir hiyerarşiden ziyade katılımcı yaklaşımların benimsenmesi sorunların daha verimli bir şekilde çözülmesini sağlamaktadır. Bu doğrultuda makalede halkın katılımıyla gerçekleşen, düşük maliyetli geçici çözümler sunan, yenilikçi taktiksel şehircilik yaklaşımının kamusal mekanları dönüştürme potansiyeline odaklanılmıştır. Bursa Uludağ Üniversitesi ve Bursa Büyükşehir Belediyesi iş birliğiyle gerçekleştirilen “Sağlıklı Kentler İçin atıl Kamusal Mekanları Katılımcı Yaklaşımlarla Dönüştürmek” temalı çalıştayın sonuç ürünü olan bu çalışmada Bursa kent merkezindeki bir sokağın taktiksel şehirciliğin ilkeleri temel alınarak dönüştürülmesi amaçlanmıştır. Çalışmada yöntem olarak literatür araştırması, deneysel gözlemler, görüşmeler ve swot analizi yapıldıktan sonra, bölgenin yerel kimliği dikkate alınarak çalışma alanına yönelik taktiksel şehircilik uygulama önerileri geliştirilmiştir. Sonuç olarak, Bursa’da oyun, sanat ve kentsel tarım temalarına odaklanan önerilerle yaşanılabilir kamusal mekanlar üretilebileceği görülmüş, taktiksel şehircilik gibi yenilikçi yaklaşımların kamusal mekanları dönüştürmedeki rolü ortaya koyulmuştur
EFEKTIVITAS PROGRAM CANTING DALAM UPAYA MENGURANGI ANGKA PERTUMBUHAN STUNTING DI DESA SONGKA KECAMATAN BATU SOPANG
Authors: Rianggara Rio , Wicaksono Ferri
Published: March 2024

One dietary issue that needs to be addressed is stunting, particularly in underdeveloped and impoverished nations. A type of growth and development failure known as stunting leads in linear growth abnormalities in toddlers and a build-up of malnutrition that persists from pregnancy until the child is 24 months old. Early on in a child's growth and development, inadequate nourishment can have a fatal effect on the child's mental and physical development. The purpose of this study is to determine how well Songka Village, Batu Sopang District, mother and child health has improved as a result of the stunting control program. Enhancing parental practices via an intervention program to raise nutritional status identification, data collection, and monitoring in order to prevent stunting in 1,000 Hertz. There is a strategy design analysis done based on the prioritized intervention program. The analysis's findings demonstrate that a combination of aggressive tactics, optimizing targeted and sensitive nutritional interventions to promote improvements in the caliber of parenting practices for children under five, is an efficient way to hasten the decline in rural stunting rates. In order to expedite the decline in stunting rates in Songka Village, the long-term strategy makes use of the chance to bolster the government's commitment and the convergence of stunting prevention strategies.
A miniature swimmer actuated by a PZT ring ultrasonic underwater propulsion system
Authors: Qian Yuan , Kong Deqing , Nagasaki Daiki , Aoyagi Manabu , Kurosawa Minoru Kuribayashi
Published: March 2024

This study investigates a scheme utilizing a ring transducer for an acoustic underwater propulsion system. Acoustic underwater propulsion systems are well suited for the inspection and repair of underwater robots due to their small size, high power density, and simple structure. Previous research has focused on self-propelled swimmers utilizing disc transducers. However, the radial vibration component of disc transducers makes it difficult to provide propulsion for an acoustic underwater propulsion system driven by an acoustic driving force. Pure longitudinal vibration requires a greater thickness to achieve the same vibration area, resulting in higher impedance and reduced driving efficiency. In this paper, simulation, and measurements of vibration distribution demonstrate that a ring transducer exhibits a vibration distribution closely resembling pure longitudinal vibration. A prototype swimmer using a ring transducer was fabricated for experimental evaluation through measurements of admittance characteristics, zero-speed propulsion, and no-load speed in water.
DMD maskless lithography optimization based on an improved genetic algorithm
Authors: Huang Shengzhou , Tang Yuanzhuo , Ren Bowen , Wu Dongjie , Pan Jiani , Tian Zhaowei , Jiang Chengwei , Li Zhi , Huang Jinjin
Published: March 2024

In this paper, we propose an effective method for optimizing mask design using an enhanced genetic algorithm (GA), significantly boosting digital micromirror device (DMD) maskless lithography performance. After a thorough evaluation of various optimization techniques, we determined that the simulated annealing-enhanced GA (SA-GA) offers superior improvements in lithography simulations, thus optimizing mask design more effectively. Our findings reveal that this method achieves up to 88% and 75% enhancement in simulation accuracy for circular and heart-shaped patterns, respectively, surpassing the results of conventional Hopkins lithography simulations. The remarkable effect of improved GA in enhancing the quality of DMD digital lithography shows that it will have great potential in micro-fabrication applications, and paves the way for the realization of high-fidelity and efficient DMD digital lithography technology, which has excellent versatility and adaptability in the field of microelectronics manufacturing.
Photoelectrical characterization of heavily doped p-SiC Schottky contacts
Authors: Imabayashi Hiroki , Sawazaki Hitose , Yoshimura Haruto , Kato Masashi , Shiojima Kenji
Published: March 2024

The availability of photoelectrical characterizations of heavily Al-doped p-SiC Schottky contacts was clarified. We conducted a systematic study of four samples with different Al doping concentrations from 1 × 1018 to 5 × 1019 cm−3. Although the current–voltage (I–V) characteristics had lost rectification, reasonable Schottky barrier height (qϕ
B) values were obtained up to 1 × 1019 cm−3 by capacitance voltage, photo response, and scanning internal photoemission microscopy (SIPM) measurements. In the two-dimensional characterization by SIPM, large photocurrent spots corresponding with low qϕ
B were observed in an average density of 103 to 104 cm−2. However, except for these spots, a high uniformity of about 2 meV standard deviation was obtained for qϕ
B over the entire observed electrodes. These results indicate that SIPM is able to characterize the inhomogeneity of heavily doped p-SiC contacts with very leaky I–V characteristics.
Monitoring the Occurrence of Alarms in High Flow Nasal Cannula (HNFC) Using IoT-Based Thinger.io Platform for COVID-19 Isolation Room
Authors: Fauziah Sapty Taurisita , Mak'ruf Muhammad Ridha , Pudji Andjar , Wakidi Levana Forra , Masood Faraz
Published: March 2024

Covid-19 has become a virus that has become a world pandemic and this virus has caused mass deaths because medical personnel have difficulty treating patients when oxygen levels in the blood have fallen to critical levels. HFNC (High Flow Nasal Cannula) is a method of administering additional oxygen to patients with acute respiratory failure. The use of HFNC in recent years has been highly recommended as a solution to provide supplemental oxygen to patients. Administration of HFNC to COVID-19 patients begins at a flow range of 30-60 LPM.Unfortunately, HFNC, which used to exist, can only be monitored manually, resulting in the transmission of HFNC-produced aerosols between patients and staff. So this study aims to analyze errors in HFNC that cause a decrease in flow to HFNC using a flow sensor as a sensor to detect leaks or other flow errors from the HFNC output hose and monitor if there is a blockage through IoT in the form of notifications.This research method uses the Pre-experimental with the After Only Design type. In this design, the researcher only used one group of subjects and only looked at the results without measuring and knowing the initial conditions, but there was already a comparison group. The independent variable in this study was the HFNC error condition. While the dependent variable in this study is the data flow read by the sensor, where IoT notifications and device status show error leaks. The sensors used in this research are MPX5700GP pressure sensors and SEN0343 Differential Pressure sensors as flow sensors. The benefit of this research is that in addition to reducing the burden on medical staff in handling Covid-19 patients, it can also minimize transmission between staff and patients caused by high aerosol production by this HFNC device, this is because HFNC device alarm monitoring can be monitored in the nurse's room via internet technology. In conclusion, to obtain maximum benefits from this research, it is necessary to select a sensor that truly has a high enough resistance to humidity produced by this HFNC humidifier's water vapor.
Analysis of BPM and Temperature Data Retrieval in Smartband Design with Android Applications Using the Multiplexing Method
Authors: Wibowo Jarot Hadi , Ariswati Her Gumiwang , Wisana I Dewa Gede Hari , Misra Shubhrojit
Published: March 2024

Monitoring and recording of patient medical records is very necessary if there are symptoms of a disease that must be taken quickly so that the patient's condition does not worsen and find out how the pattern of a disease attacks the body's condition, this is so that the patient's history data can be checked by a doctor to make it easier and improve the accuracy of the doctor's diagnosis. In its application, the use of two sensors for smartband requires the use of a multiplexer method so that the data does not collide with each other because of the similarity of the two sensor systems. In this study, the Wemos D1 Mini microcontroller was used to process BPM and temperature data, as well as to process the time of using the multiplexer of the two sensors, then the BPM and temperature values ​​were displayed on the OLED screen. Based on the results of the research that has been done, it can be concluded that the smartband has an error (error value) which is still within the allowable tolerance limit of ±5%. This study has the advantage of a portable device design and is very suitable for daily use to monitor the patient's condition, so that patients are not disturbed by the presence of this smartband. This research has a development that is the use of a larger battery so that its use can last longer, then the use of a temperature sensor that has a medical grade standard.