bluuebunny/crossref_metadata_2025 huggingface dataset:
Carpectomía de la fila proximal en procesos degenerativos de la muñeca. Nuestra experiencia a mediano plazo
Authors: Matellanes Palacios Clara , Cabanes Ferrer Isabel , Alfonso Porcar Miguel , Gázquez Gázquez Gemma , Losar Sogues Colom Ana , Castillo Ruipérez Laura , Garrido Ferrer José , Hernández Ferrando Lorenzo
Published: August 2024

Objetivo: Evaluar los resultados clínico-radiográficos a mediano plazo del tratamiento de los procesos degenerativos de la muñeca mediante carpectomía proximal.
Materiales y Métodos: Estudio descriptivo retrospectivo de 33 pacientes operados entre 2009 y 2019 en nuestro Centro. Se evaluaron el rango de movilidad, el dolor con la escala analógica visual y la capacidad funcional con el cuestionario QuickDASH. Se realizaron pruebas de valoración biomecánica. Se estudió la incidencia de complicaciones y de una segunda intervención. Se evaluó la progresión radiográfica de la artrosis y su asociación con los malos resultados clínicos.
Resultados: El seguimiento medio fue de 10 años. El rango de movilidad medio fue de 77,11° en el arco de flexo-extensión y 36,7° en el radiocubital. El puntaje medio de dolor evolucionó de 7,9 a 2,7 tras la cirugía (p <0,003). El puntaje QuickDASH en el último control fue de 24,3. Se halló una asociación inversa entre el grado de artrosis radiocarpiana preoperatoria y el resultado clínico (p <0,03); sin embargo, no hubo una relación entre la evolución artrósica radiográfica posoperatoria con la mala evolución (p <0,04). Cuatro pacientes necesitaron una segunda intervención mediante artrodesis total de muñeca.
Conclusiones: La carpectomía proximal es una opción terapéutica que ofrece resultados satisfactorios a mediano plazo en pacientes con procesos degenerativos de la muñeca, proporciona un adecuado rango de movilidad con una baja tasa de complicaciones. El uso de esta técnica en pacientes con degeneración articular de mayor grado antes de la cirugía puede llevar a un peor resultado clínico.
Research Corner: ORNL next-generation materials research
Authors: Hun Diana E. , Brewe Jared
Published: August 2024

In 2017, PCI and Oak Ridge National laboratory (ORNL) engaged in a Cooperative Research and Development program, the results of which are discussed in Next Generation of Architectural Precast Insulated Wall Panels. This Research Corner has excerpts from the project summary final report; provides an overview of the work performed by ORNL, UT, and PCI; and presents some of the resulting technologies.
Circulating dengue virus serotypes, demographics, and epidemiology in the 2023 dengue outbreak in Chittagong, Bangladesh
Authors: Rob Md. Abdur , Hossain Mohabbat , Sattar M.A. , Ahmed Istiaq Uddin , Chowdhury Abul Faisal Md. Nuruddin , Mehedi H.M. Hamidullah , Mohammed Noor , Maruf ul Quader Mohammed , Hossain Md. Zakir , Rahman Mustafizur , Chakma Kallyan , Barua Susmita , Naznin Etu Silvia , Sikder Uschash , Tanni Afroza Akter , Mannan Adnan
Published: August 2024

Dengue is a serious epidemic for Bangladesh affecting thousands of lives. This study aimed to identify and determine the prevalence of the circulating variants of dengue virus (DENV) and their association with demographics and clinical manifestations among the dengue-infected patients. A total of 711 participants with NS1 antigen positivity were enrolled, followed by viral RNA extraction from the collected blood samples and a multiplex real-time reverse transcription-polymerase chain reaction (RT-PCR) assay to determine the dengue virus serotypes. Of 711 dengue-infected patients, 503 (70.7%) were male. Among different age groups, most of the patients were 21–30 years old (n = 255, 35.9%). The DENV2 (n = 483, 67.9%) serotype was more prevalent than the DENV3 (n = 144, 20.3%) and DENV1 (n = 84, 11.8%). The duration of fever was highest in the DENV-1 patients (4.79 ± 1.84 days) in contrast to DENV-3 (4.48 ± 1.68 days) and DENV-2 (4.33 ± 1.45 days) (P = 0.039). Importantly, five highly populated areas were identified as dengue hotspots in Chittagong metropolitan city. Our results provide crucial insights into the patterns of dengue virus transmission and severity among southern Bangladeshi population, thereby aiding in the development of targeted public health interventions and management strategies to combat future outbreaks.
Comparative analysis of an electromechanical model of an exoskeleton with links of variable length and a model containing absolutely solid links
Authors:   Branch of the National Research University Moscow Power Engineering Institute in Smolensk, Blinov Alexander , Borisov Andrey , Konchina Larisa , Kulikova Marina , Maslova Kseniia
Published: August 2024

The plane motion of an exoskeleton with five links of variable length is considered. It is assumed that there is a person inside the exoskeleton, and the exoskeleton is equipped with sensors that read indicators of a person’s muscle activity, convert them into control signals for electric drives and instantly implement them in the exoskeleton. The novelty of the study is due to the model of changes in the lengths of sections of exoskeleton links. The relevance of the research lies in the possibility of restoring and enhancing the motor functions of the human body with the help of an exoskeleton and replacing people with anthropomorphic mechanisms in harmful and hazardous production that does not have the ability to use wheeled, tracked and other types of robots. The model specifies the design of links of variable length. Each link includes a weightless section with varying length, located between two absolutely solid weighty sections. Numerical and analytical modeling was carried out based on solving the inverse problem of dynamics for the mechanism under consideration. A method has been developed for controlling the proposed mechatronic robotic system in the form of a person in an exoskeleton based on specifying programmed movement and determining control moments localized in large hinge joints and longitudinal forces that determine changes in the lengths of the mechanism links. A comparison is made with the model containing absolutely rigid links, considered earlier. The problems that arise when taking into account changes in the lengths of links are identified. A model of the functioning of the human – exoskeleton biomechatronic system is proposed.
Apresentação outros temas
Authors: Pinheiro dos Santos Naira
Published: August 2024

A Mandrágora chega ao seu 30º. ano de existência desafiando cânones e fazendo ecoar as vozes femininas, feministas no campo religioso, mesmo naqueles temas ainda pouco explorados, como é o caso do budismo, contemplado com um dossiê na última edição de 2023. O fato de ser ainda pouco debatido no Brasil nos levou a propor um segundo dossiê na presente edição. Os artigos do dossiê Gênero e Justiça Social nas Tradições Budistas, coordenado por Fernanda Marina Feitosa Coelho e Patricia Guernelli Palazzo Tsai contemplam análises de múltiplos aspectos e formas pelas quais questões de justiça social e de gênero atravessam as tradições budistas, articulando raça, sexo, sexualidade em perspectiva interseccional.
A experiência vivida:
Authors: Andrade Renata
Published: August 2024

As pesquisas que abordam mulheres e religião têm se dedicado, especialmente, em análises que buscam compreender como as relações de poder se estabelecem sobre o gênero feminino dentro dessas instituições. Ainda não foram encontradas pesquisas que joguem luz para a compreensão do fenômeno do crescimento do número de mulheres que se declaram sem religião. Neste trabalho, portanto, objetiva-se apresentar a  trajetória religiosa de mulheres sem religião pertencentes a coletivos feministas, demonstrando os elementos que contribuíram para seu afastamento das instituições religiosas.
Das oito mulheres entrevistadas, sete vem de famílias católicas e uma de família já sem laços institucionais. Todas elas romperam entre a adolescência e a fase adulta os laços com suas instituições religiosas e permanecem assim até os dias atuais. O afastamento das instituições religiosas ocorreu devido às suas vivências religiosas particulares nas igrejas correlacionadas às suas origens étnicas, seu gênero e sua orientação sexual. Seus relatos, portanto, não representam apenas um retorno ao passado, mas uma tomada de posição em suas próprias vidas e que nesse caso refere-se a se tornar uma mulher sem religião.
Reforma da saúde, alimentação e o cuidado de si no Adventismo
Authors: Fernanda da Cruz Bach Luanna
Published: August 2024

O artigo discute como a reforma da saúde ocorrida no século XIX nos Estados Unidos se relaciona com o surgimento da Igreja Adventista do Sétimo Dia e como ela contribuiu para a elaboração dos princípios adventistas em relação à alimentação e ao cuidado com o corpo. No adventismo, a alimentação saudável é considerada um dos “oito remédios naturais”. Sua adesão, em conjunto com outras práticas como a ingestão regular de água, a prática de exercícios físicos e a respiração de ar puro, seria a forma ideal de cuidado com o corpo. Contudo, ao analisar a mídia impressa adventista, principal fonte de divulgação de suas doutrinas, algumas problemáticas surgem nesse discurso sobre o cuidado, em especial com o corpo, mas não limitado a ele.
Uma reflexão sobre as desigualdades de gênero a partir da perspectiva do sūtrā budista Āveṇikadukkhasutta - Os cinco sofrimentos particulares das mulheres
Authors: Loureiro Motta Chinaglia Magda , Panitza Beluzzi Ethel
Published: August 2024

Este artigo busca trabalhar o Āveṇikadukkhasutta (os cinco sofrimentos particulares das mulheres), um sutta budista da tradição Páli, a partir das desigualdades de gênero, na cultura indiana antiga e na sociedade contemporânea. Esse sutta apresenta cinco sofrimentos que perpassam a condição feminina, tanto sob o ponto de vista biológico quanto social, como a menstruação, a gravidez e o parto, a separação da família no casamento e a submissão forçada ao homem. Eles são trabalhados no contexto histórico e cultural no qual o texto foi proferido, e considerações sobre como até hoje podemos observá-los em nossa sociedade. Trazemos, por fim, elementos da tradição budista que se opõem diretamente às estruturas que causam esse sofrimento, defendendo a proteção a todos os seres.
Sürdürülebilir kalkınma hedeflerinin gerçekleştirilmesinde lojistik köy ve merkezlerin önemi
Authors: Kaya Metin , Dışkaya Sude
Published: August 2024

Küresel ısınma ve iklim değişikliği gibi faktörler doğal ekosistemi ve insan topluluklarını derinden etkilemekte, sürdürülebilir ve yenilikçi çözümler arayışını artırmaktadır. 2015 yılında Birleşmiş Milletler tarafından belirlenen 17 Sürdürülebilir Kalkınma Hedefi (SDG), çevresel, sosyal ve ekonomik dengeyi sağlama amacına hizmet etmektedir. Lojistik köy ve merkezler, mal ve hizmetlerin taşınması, depolanması ve dağıtımını optimize ederek tedarik zincirinin verimliliğini artırmaktadır. Bu yapılar, ekonomik kalkınmayı teşvik ederek SDG 1, 9 ve 17’ye; gıda israfını azaltarak SDG 2’ye; sağlık hizmetlerini iyileştirerek SDG 3’e; toplumsal cinsiyet eşitliğini teşvik ederek SDG 5, 10 ve 16’ya katkıda bulunmaktadır. Ayrıca sorumlu tüketim ve üretimi teşvik ederek SDG 12 ve 13’e ve ekosistemlerin korunmasına yardımcı olarak SDG 14 ve 15’e destek vermektedir. Böylece, lojistik köy ve merkezler, sürdürülebilir kalkınma hedeflerine ulaşmada ekonomik, çevresel ve sosyal boyutlarda kayda değer katkılar sağlayarak daha sürdürülebilir ve refah içinde bir dünya inşa edilmesine olanak tanımaktadır.
Optimizing Energy Efficiency in High-Rise Buildings: Strategies and Innovations
Authors: Hoonka Vaibhav , Tiwari Manish , Mishra Gurusharan , Verma Parth , Khare AK , Sirbaiya Bhupendra
Published: August 2024

Construction companies are increasingly recognizing the demand for buildings that maximize efficiency and minimize waste. Buyers now seek properties that align with their environmental goals and offer long-term savings compared to conventional buildings. Committing to green building practices not only reflects a builder's dedication to quality but also enhances the building's overall value and appeal.
Exploring Diverse Approaches in VLSI Design
Methodologies
Authors: Mishra Prateek
Published: August 2024

The field of Very-Large-Scale Integration (VLSI) design has witnessed significant evolution, driven by
advances in technology and the increasing complexity of integrated circuits. This paper provides a comprehensive
examination of various methodologies employed in VLSI design, aiming to shed light on their unique advantages,
limitations, and applications. We categorize the methodologies into traditional, contemporary, and emerging
approaches, including Full Custom Design, Standard Cell Design, and ASIC/FPGA-based design strategies. Through
comparative analysis, we explore how each approach addresses key design challenges such as scalability, power
efficiency, and design flexibility. The paper also discusses the impact of automated tools and software innovations on
the efficiency of VLSI design processes. By highlighting case studies and practical examples, we illustrate the
effectiveness of these methodologies in real-world scenarios. This study serves as a valuable resource for both
practitioners and researchers, offering insights into selecting the most suitable VLSI methodology based on specific
project requirements and constraints.
Vilniaus miesto bendruomenių organizacinis gyvenimas XX a. 3-iajame dešimtmetyje lenkų valdžios akimis
Authors: Stravinskienė Vitalija
Published: August 2024

Vilniaus miesto komisaras Kazimiežas Vimboras (Kazimierz Wimbor) išsiuntė 1924 m. pirmojoje pusėje Lenkijos vyriausybės įgaliotiniui Vilniaus mieste slaptą ataskaitą. Dokumento parengimą inicijavo Lenkijos vidaus reikalų ministerija, nurodžiusi vietinei valdžiai surinkti informaciją apie organizacinį gyvenimą atskiruose šalies regionuose. Ataskaitoje buvo aptariama įvairių miesto bendruomenių draugijų veikla, jų vadovybė, nevengta organizacijų politinio vertinimo ir rekomendacijų dėl tolesnės veiklos. Organizaciniu aktyvumu iš kitų bendruomenių išsiskyrė Vilniaus žydai, kurie įkūrė ir išlaikė kelias dešimtis įvairaus pobūdžio draugijų. Publikuojamas dokumentas aktualus ir vertingas vykdant Vilniaus m. XX a. istorijos tyrimus. Lietuvių istoriografijoje jis beveik nežinomas, publikuotas nebuvo.
BALANCING ENERGY EFFICIENCY WITH ROBUST SECURITY IN WIRELESS SENSOR NETWORKS USING DEEP REINFORCEMENT LEARNING-ENHANCED PARTICLE SWARM OPTIMIZATION
Authors: Nelavalli Swathi , RammohanReddy Dondeti , Neelima Gottimukkala , Rao Samudrala Saida
Published: August 2024

This paper addresses the crucial problem of prolonging network lifespan without sacrificing performance by introducing a novel deep reinforcement learning-enhanced particle swarm optimization (DRL-EPSO) model for energy optimization in wireless sensor networks (WSNs). Our approach combines the global search efficiency of PSO with the adaptive learning capabilities of DRL to dynamically optimize energy consumption strategies and operational parameters in real-time. The DRL-EPSO model showed a significant increase in energy efficiency through simulations employing a 500-node network, reaching a 25% reduction in energy consumption compared to standard PSO procedures and a 40% reduction compared to conventional DRL methods. With a proportional increase in data transmission reliability and a 15% improvement in latency under various climatic circumstances, the network's operational lifetime was extended by an average of 30%. These findings highlight the potential of DRL and PSO combined for energy management in WSNs, providing a flexible and scalable approach that can greatly improve the sustainability and efficiency of networks.
Construction engineering to transform the composite frame of YY London
Authors: Roberts John , Simpson James , Murphy Neil , Paxman Jody
Published: August 2024

As part of the first phase of London’s Canary Wharf redevelopment, 30 South Colonnade was a 13-storey composite framed office building completed in the early 1990s. Between 2020 and 2023 it was refurbished to become YY London, a highly sustainable modern workspace. A key aspect of the project was retention and reuse of much of the existing structure, dramatically reducing the new development’s Embodied Carbon Dioxide equivalent (embodied CO2e) impact. This paper describes the way the composite steel-framed building’s original structural configuration was developed to accommodate the move to on-screen share trading in the 1980s. It then outlines the reasons why that change was needed for the 2020s. A key feature of the construction engineering was a demolition that disconnected several bays of the original bracing from the surrounding slab, requiring staged construction of temporary stability, and complicated by an unusual decision by the original designers. UN Sustainable Development Goal 12 (Responsible consumption and production) is stimulating architect, engineers and clients to propose more extensive reuse of structures and their embodied CO2e. This paper describes the construction engineering challenges that these schemes generate for contracting teams, and some of the solutions that can be implemented to preserve and reuse the embodied CO2e of composite buildings.
Satisfação discente com o uso de ferramentas educativas em um curso de Ciências Biológicas na modalidade a distância
Authors:   Univerdidade Estadual do Pará, Ielpo Mourão Charles
Published: August 2024

A presente pesquisa objetivou analisar a satisfação dos alunos com o uso de ferramentas educativas em um curso de licenciatura na modalidade a distância. O estudo, de natureza descritiva e abordagem quantitativa, contou com participação de 124 alunos matriculados em um curso de licenciatura em Ciências Biológicas em municípios do Estado do Ceará. Foi utilizado um questionário via Google Forms®, composto por 11 perguntas, divididas em dados sociodemográficos e nível de satisfação com as ferramentas utilizadas no curso. Para a tratamento dos dados, foram empregados cálculos estatísticos simples. A maioria dos participantes é do sexo feminino, solteira, com a faixa etária mais comum entre 25 e 35 anos. Em relação às atividades com maior índice de satisfação, destacam-se: o fórum, com 66,1% de satisfação entre as atividades de interação e discussão; o plano de aula, com 79,1% de satisfação entre as atividades de produção textual; os modelos didáticos, com 70,9% de satisfação entre as atividades de produção de recursos metodológicos; o podcast, avaliado positivamente por 79,1% dos participantes entre as atividades com uso de recursos tecnológicos; e as pesquisas bibliográficas, que se destacaram com 54,5% de satisfação entre as atividades de pesquisa. Observou-se uma maior satisfação entre as atividades de produção textual e as com uso de recursos tecnológicos, especialmente o plano de aula e o podcast. Esse diagnóstico de satisfação é relevante para orientar as decisões dos docentes em futuros planejamentos de disciplinas.
Evaluating access to education for Rastafarian children and Muslim girls in Malawi
Authors: Chitha Mateo Fatsani
Published: August 2024

Over the years, there has been a challenge for Rastafarian and female Muslim children to access education in public schools as well as Christian-aided or assisted schools in Malawi. This challenge has been due to a policy requiring all students or learners in public schools to have short and combed hair. There is a belief that the policy, dating back to Malawi's one-party era, targeted Rastafarian children and female Muslim children due to their maintaining dreadlocks or long hair and wearing of the hijab, respectively. In challenging this infringement of access to education by Rastafarian and female Muslim students in Malawi, the country has witnessed litigation, circulars and memoranda of understanding. This article examines the effectiveness of the adopted approaches in addressing access to education for Rastafarian and female Muslim children. In so doing, the author presents the applicable legal and policy framework. The article subsequently looks at how access to education challenges have been addressed in relation to female Muslim students and Rastafarian children, respectively. Before the conclusion, there is a brief discussion of the justiciability of the right to education in Malawi and related issues of the role of the courts and other stakeholders. Based on this analysis and examination, the article concludes that much as the adopted approaches have played a crucial role in ensuring access to education for Rastafarian and female Muslim children, there is a need for more action in terms of legislative reform as well as dissemination and public awareness, in particular regarding the recent High Court decision concerning Rastafarian children and their access to education. The article recommends further study on the issue of access to education in Malawi, especially on other aspects of education accessibility as well as dealing with other religious groups.
Sorption processes in the "6-methyluracil-super-cross-linked polymer" system
Authors: Shkutina Irina V. , Mironenko Natalia V. , Selemenev Vladimir F.
Published: August 2024

The study presents the results of investigation of the processes of sorption of 6-methyluracil (MU) by low basic anion exchanger A-100 and high basic anion exchanger A-500R, which have a macroporous structure. It was found that the maximum sorption was observed at pH 3.2-3.5; in the area when 6-methyluracil (6-methyl-2.4-dioxo-pyrimidine) was in the lactam form in the solution. The obtained sorption isotherms were analysed. It was noted that the formation of monomolecular layers of 6-methyluracil (MU) on A-100 and A-500R ion exchangers can be described by the Langmuir isotherm equation. With an increase in the MU concentration in the external solution, the sorption process was due to such interactions as the “sorbate-sorbate” association. Based on the literature data and IR spectroscopy data, it was shown that in macropores and on the surface of anion exchangers, polymolecular layers of methyluracil were formed. These layers were described by the Brunauer-Emmett-Teller (BET) equation. It has been suggested that in this case the formation of supramolecular structures in the form of ions and molecules of 6-methyluracil occurred. Hydrogen bonds and van der Waals interactions made the greatest contribution to the absorption of MC by sorbents. Along with this, the manifestation of electrostatic forces is possible in the interaction between the sorbed ions of 6-methyluracil.
Possible prospects for the use of hypercrosslinked anion exchangers for the isolation and concentration of 6-methyluracil from food production solutions were considered. For this, the sorption of MU under kinetic conditions was studied taking into consideration the acidity of the solution. Based on the kinetic data obtained during the experiment, it was suggested that the sorption process is limited mainly by the internal diffusion stage. The diffusion coefficient of MU on A-100 was 1.12·10-9 cm2/s; for A-500R it was 2.45·10-9 cm2/s. The time to reach equilibrium on the considered sorbents was on average 60 minutes.
The effect of ultrasonic treatment on the sorption-surface characteristics of birch biochar
Authors: Tomina Elena V. , Khodosova Nataliya A. , Manukovskaya Varvara E. , Lukin Anatoliy N. , Korchagina Anna Yu.
Published: August 2024

Interest in biochar as a sorbent for wastewater treatment, including for the extraction of heavy metal ions, is due to its properties: resistance to degradation, large area and significant negative surface charge, the possibility of generating reactive oxygen species under ultraviolet irradiation with the subsequent destruction of organic pollutants.
The purpose of the study was the creation of a sorbent based on birch sawdust as sawmill wood waste as a result of directed physico-chemical modification of biochar, the determination of its characteristics and sorption capacity for copper ions.
According to scanning electron microscopy data, simultaneous activation of birch sawdust carbonizate with KOH and ultrasound for 30 minutes contributed to an increase in the fraction of biochar particles with a size of 20-60 microns and the disappearance of biochar particles larger than 100 microns, an increase in bulk density was noted. An increase in the carbon content in biochar after activation and a decrease in the O/C molar ratio from 0.304 to 0.258 were established using energy dispersive analysis method. IR spectroscopy confirmed the presence of a number of surface oxygen-containing functional groups: hydroxyl, carbonyl, carboxyl, quinoid.
The sorption of Cu2+ by modified coal increased by 2.2 times compared with the original birch sawdust carbonizate. Sorption isotherms of copper ions both by the initial and activated biochar were satisfactorily described by the Langmuir equation. Physical and chemical modification of biochar with KOH and ultrasound contributed to an increase in the capacity of the adsorption monolayer and the equilibrium constant. The sorption at pH=5.8 contributed to the deprotonization of oxygen-containing functional groups –COOH and –OH present on the biochar surface, which increased the adsorption of Cu2+ ions.
The formation of Cu-O bond between carboxylate ions and Cu2+ was confirmed by shift at 1200 cm-1, corresponding to the stretching vibrations of the C-O bond in the carboxyl group, to the region of lower frequencies in the IR spectra of biochar samples after sorption. A larger shift was typical for the spectrum of B+KOH+US+CuSO4 sample, which was consistent with an increase in the sorption of copper ions by activated biochar.
The use of magnetic carbons obtained from vegetable raw materials based on rice husks for the extraction of chlorophenoxyacetic acids and their metabolites
Authors: Sypko Ksenia S. , Gubin Aleksander S. , Kushnir Aleksei A. , Sukhanov Pavel T.
Published: August 2024

Carbon sorbents (CS) are one of the most studied and used in various industries (oil and gas, chemical, etc.), they are also effective for extracting and concentrating almost all groups of organic and inorganic compounds. Various organic raw material are the basis for obtaining CS, inexpensive sorption materials obtained from natural materials. Their advantages include abundance, availability, low cost, high sorption capacity. One of the modern areas of concentration technology is the use of "core-shell” magnetic sorbents.
The purpose of the study was the possibility of obtaining a magnetic adsorbent based on natural material - rice husk (RH) and further application for the extraction of chlorophenoxyacetic acids [2,4-dichlorophenoxyacetic (2,4-D), 2,4-dichlorophenoxybutyric (2,4- DM), 2,4-dichlorophenoxypropionic (2,4-DP)] and their metabolites [2,4-dichlorophenol (2,4-DCP) or 4-chlorophenol (4-CP)].
A method for the synthesis of magnetic coal (Fe3O4/C) from RH, waste of plant origin was suggested. The synthesis includes burning at 600ºС, grinding in a planetary mill and mixing the resulting coal in solution with FeCl3 and FeSO4 in an alkaline medium at a temperature of 70ºС. Dimensions of the magnetic core Fe3O4/C were 8 – 22 nm, particle sizes were from 0.5 to 3 µm. The specific surface area of the adsorbent was 892 m2/g, pore volume was 0.2945 cm3/g, the average pore size was 2.24 nm.
Synthesized Fe3O4/C showed high efficiency in relation to chlorophenoxyacetic acids and chlorophenols. Optimal sorption conditions were established: adsorbent dose - 2 g/dm3, pH 3 (the degree of extraction depends on the surface charge of the adsorbent and sorbate), adsorption time was 3–5 min. The recovery rates were 87.5 – 99.9%. Under such conditions, sorption isotherms were obtained and the sorption capacity of the studied adsorbent with respect to sorbates was evaluated. Sorption isotherms were processed using the Langmuir and Freundlich equations. The highest correlation coefficients (r2 = 0.987-0.993) were established when they were presented in Langmuir coordinates, the maximum adsorption capacity of 2,4-D, 2,4-DP, 2,4-DM, 2,4-DCP, 4-CP was 318.1, 352.2, respectively, 382.5, 512.2, 482.5 mg/g.
Chromatography in the separation of stable isotopes
Authors: Ivanov Vladimir A.
Published: August 2024

The feasibilities of chromatographic methods for the separation of stable isotopes, such as isotopes of hydrogen, lithium, boron, and nitrogen, are considered. The advantages of these methods compared to traditional physicochemical gas-liquid systems, mainly used for separating isotope mixtures, are that the HETS values are smaller, stopping the process even for a sufficiently long time does not lead to a fatal change in the distribution of the separated components over the layer, usually no special temperature conditions are required. At the same time, in most cases, these methods have not yet been able to compete significantly with traditional technologies for the separation of stable isotopes by rectification and chemical isotope exchange in gas-liquid systems. This is due to their periodicity, the need to use large quantities of auxiliary reagents and insufficiently high productivity. Therefore, in ongoing research on the use of chromatographic methods for isotope separation, attempts are made to solve these problems. The greatest successes have been achieved in the separation of mixtures of dihydrogens by chromatographic methods, which is used in the creation of technologies for the preparation and regeneration of fuel for thermonuclear fusion, and for obtaining high-pure dihydrogens for metrological studies.
Novel highly hydrophilic resins with grafted polymer layers for liquid chromatography
Authors: Gorbovskaia Anastasiia V. , Timichev Arsenii A. , Chernobrovkina Alla V. , Uzhel Anna S. , Shpigun Oleg A.
Published: August 2024

The aim of the work was to obtain novel mixed-mode stationary phases with increased hydrophilicity and to apply them in ion and hydrophilic interaction liquid chromatography modes. The resins were prepared by covalent attachment of branched polyethyleneimine and following fixation of polyelectrolytes obtained via reaction of diepoxide and secondary amine on the base of epoxidized polystyrene-divinylbenzene. Polymerization of glycidol in the functional layer of the phases was conducted at an increased pH of the reaction medium for additional shielding of the substrate.
Synthesized resins are highly hydrophilic as compared to the majority of phases based on a copolymer of styrene and divinylbenzene with covalently grafted layers. It is evidenced by a decreased relative retention of polarizable anions, weakly hydrated oxyhalides (up to changing the elution order of bromate), and haloacetic acids in ion chromatography mode. Increased hydrophilicity of the phases in hydrophilic interaction liquid chromatography mode is confirmed by the growth of polar analytes’ retention factors, as well as changing the elution order of ascorbic and nicotinic acids as compared to polystyrene-divinylbenzene-based phases presented in the literature. The low efficiency of the obtained stationary phases in ion chromatography mode was noted, which is associated with slow mass transfer in the bulky polymer functional layer. The negative effect of the polymer layer on efficiency in hydrophilic interaction liquid chromatography is less pronounced due to the presumably smaller thickness of the functional layer’s part involved in this mode.
Proposed synthesis method provided the increase of phase’s efficiency, selectivity, and separation ability in hydrophilic interaction liquid chromatography mode in comparison with phases based on a copolymer of styrene and divinylbenzene described earlier in the literature. Obtained highly hydrophilic resin made it possible to separate mixture of 9 nitrogenous bases and nucleosides in 18 min, 6 vitamins in 24 min, and 8 sugars in 11 min. Thus, the method of hydrophilizing the substrate described in this work is promising for improving the chromatographic characteristics of phases in hydrophilic interaction liquid chromatography and can be used for creation of resins with increased selectivity and efficiency.
Adsorption immobilization of inulinase from Aspergillus ficuum and Kluyveromyces marxianus: a comparative aspect
Authors: Holyavka Marina G. , Kondratyev Maxim S. , Artyukhov Valery G.
Published: August 2024

Virtual screening of ligands for the immobilization of fungal inulinase from Aspergillus ficuum and yeast inulinase from Kluyveromyces marxianus was performed using computer simulation methods. An algorithm has been developed to reveal the molecular mechanism of adsorption immobilization of inulinases using sequential (cascade) docking methods. The probable binding sites of polymeric matrices with enzyme molecules from various producers were visualized during adsorption immobilization. It has been established that the complexation of inulinase with charged carrier matrices occurs mainly due to hydrogen bonds and van der Waals interactions. It has been shown that during the sorption of inulinases from Aspergillus ficuum and Kluyveromyces marxianus on the matrices KU-2, AV-17-2P, VION KN-1, VION AN-1, KOPAN-90 and chitosan, the following similarities are revealed: 1) when both types of inulinases interact with the KU-2 matrix, hydrogen bonds are formed only between the carrier sulfo groups and the protein molecule; 2) only van der Waals interactions and the absence of hydrogen bonds are revealed between the matrix of the anion exchange resin AV-17-2P and enzymes; 3) chitosan forms the largest number of hydrogen bonds with both inulinases among the carriers studied by us.
Distinctive features of inulinases from Aspergillus ficuum and Kluyveromyces marxianus during sorption on KU-2, AV-17-2P, VION KN-1, VION AN-1, and KOPAN-90 matrices were revealed: 1) binding affinity of yeast inulinase to the surface of KU-2 resin generally higher, and the number of hydrogen bonds and the number of amino acid residues that form van der Waals interactions, is greater than that of the fungal enzyme; 2) the binding affinities and the number of amino acids involved in van der Waals interactions for inulinase from Kluyveromyces marxianus during sorption on the anion exchange resin AV-17-2P also exceed their values for the enzyme from Aspergillus ficuum; 3) in contrast to fungal inulinase, in which 21 amino acid residues are part of the binding sites with all the carriers we studied, the yeast enzyme has only one such residue.
Application of zeolites in high-performance liquid chromatography
Authors: Luzanova Viktoria D. , Rozhmanova Nina B. , Lanin Sergey N. , Nesterenko Pavel N.
Published: August 2024

Inorganic zeolites or microporous crystalline aluminosilicates have high porosity, developed specific surface area, uniform pore size and ion exchange properties, which determines their molecular sieve and adsorption properties. The use of zeolites as catalysts, dryers of solvents and gases, and selective sorbents for the separation of low molecular weight compounds is widely known. Zeolites are widely used as fillers for chromatographic columns in gas adsorption chromatography.
Little is known about the use of zeolites in high-performance liquid chromatography (HPLC) and the mechanism of sorbate retention on these sorbents. Depending on the properties of sorbates, retention is determined by a combination of ion exchange, adsorption, molecular sieve effect, as well as kinetic selectivity. Due to solvation of the sorbent surface in HPLC, the thermodynamic parameters of the interaction of sorbates with zeolite change, the effective pore size decreases, and the diffusion of separated compounds into the pores of the sorbent becomes more difficult.
Nevertheless, zeolites are promising adsorbents, since specific size (dpore) and the pore geometry of zeolites, as well as the possibility of selecting zeolites with a certain polarity, determines the high selectivity of the separation of low molecular weight compounds. Wide-pore zeolites with dpore (0.6-0.8 nm) with 8, 10, 12, and 14-membered ring channels are of greatest interest for HPLC.
This review provides brief information about the classification, composition, structure of zeolites and their effect on their adsorption properties, as well as systematizes data on the use of zeolites in HPLC.
Less invasive surfactant administration versus intubation-surfactant-extubation in preterm infants: a retrospective study
Authors: Dini Gianluca , Grazia Santini Maria , Celi Federica , Verrotti Alberto
Published: August 2024

Aim To compare the need for intubation and mechanical ventilation after surfactant delivery between less invasive surfactant administration (LISA)-treated and intuba-tion-surfactant-extubation (IN-SURE)-treated premature infants with respiratory distress syndrome (RDS). 
Methods Retrospective registry-based cohort study enrolled 36 newborns admitted to the Neo-natal Intensive Care Unit of the “Santa Maria” Hospital of Terni between 2016 and 2023. As a primary outcome, the need for intubation and mechanical ventilation within 72 hours of life was followed, and major neonatal morbidities and death before discharge as the secondary outcome. 
Results The LISA group and the IN-SURE group included 13 and 23 newborns, respectively. Demographic features showed no significant differences between the two groups. The need for mechanical ventilation in the first 72 hours of life was similar in both groups (p>0.99). There were no significant differences in morbidities. 
Conclusion LISA and INSURE are equally effective modalities for surfactant administration for the treatment of RDS in preterm infants.
Collection demo 1 v1
Authors: Gasque Gabriel
Published: August 2024

Abstract here for collection
Montaigne. Ética en diálogos modernos: los Ensayos
Authors:   Universidad de Antioquia, Raga Rosaleny Vicente
Published: August 2024

La primera pregunta que uno puede plantearse al leer un libro publicado en Colombia sobre Michel de Montaigne (1533-1592), un escritor francés del Renacimiento tardío, es el sentido que puede tener volver sobre dicho autor hoy, su actualidad para nuestro contexto. Sin duda, Los ensayos del pensador perigordino son conocidos por el lector culto. De hecho, a menudo se dice que su obra ha dado pie a un género nuevo, a una manera de escribir y, quizá, a un modo de pensar, que todavía nos es cercano.
Trüf aşılı meşelerde trüf mantarının tutma başarısının ve yaşama oranlarının belirlenmesi
Authors: Denli Özge , Yolcu Halil İbrahim , Çobanoğlu Abdurrahman , Cılız Neşe , Mahsun Murat
Published: August 2024

Türkiye ormanlarının trüf verimliliğini fark eden Orman Genel Müdürlüğü 2013 yılında Trüf Ormanı Eylem Planını yayınlamış; Orman Fidanlıklarında trüf mantarıyla aşılanan meşe fidanları ile trüf aşılı meşe ağaçlandırmaları yapmaya başlamıştır. Trüf aşılanmış fidanların orman içi boşluklara aktarılmasının akabinde meşe köklerinde trüf mantarı gelişiminin devam edip etmeyeceğinin ve dikimden sonra hangi türlerin daha üstün geleceğinin araştırıldığı bu çalışma 2015 yılında başlatılmıştır. Türkiye’de doğal olarak yetişen T. aestivum (Yazlık siyah trüf) ve dünyada trüf yetiştiriciliğinde çok tercih edilen T. melanosporum (Kışlık siyah trüf) türleri ile aşılanmış meşe fidanlarının alçak ve yüksek rakımlara dikildiği dört ayrı deneme sahası kurulmuştur. Antalya ilindeki deneme sahalarına dört meşe türünden otuzar adet trüf aşılı meşe fidanı tesadüf blokları deneme deseniyle dikilmiştir: Meşe türleri (1+0) Q. robur, Q. ithaburensis, Q. infectoria ve Q. suber (T. melanosporum denemesine alınmamıştır) ‘dir. Beş yılın sonunda T. aestivum kolonizasyon oranı en yüksek %35 ve en düşük %1 olarak belirlenmiştir. T. melanosporum kolonizasyon oranı ise en yüksek %67,7 ve en düşük %13,6 olmuştur. Q. ithaburensis ise saha ve trüf mantarı fark etmeksizin benzer kolonizasyon oranlarını vermiştir. Bir deneme alanında Q. suber, üç deneme alanında Q. infectoria yaşama oranı en yüksek türler olmuştur.
Delayed Cord Clamping at Delivery of a Newborn- A Position Statement by the College of Paediatrics and the College of Obstetricians and Gynaecologists, Academy of Medicine of Malaysia
Authors:   Department of Paediatrics, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000 Cheras, Kuala Lumpur, Malaysia.
Published: August 2024

Delayed cord clamping (DCC) is a practice in which the umbilical cord of a newborn is not immediately clamped and cut after birth, but deferred to allow the transfer of vital blood and nutrients from the placenta to the neonate. This position paper, in advocating DCC, highlights some key physiological factors of the newborn transitioning into extrauterine life in justifying the delay in cord clamping. The optimum timing in clamping the cord is also discussed based on the recommendations on best practice from some of the foremost international bodies involved in maternal, fetal and neonatal care. In explaining the benefits of DCC from a scientific perspective, this paper also reviews the significant impact on neonatal health, especially in decreasing intraventricular haemorrhage and circulatory instability in the preterm infant, iron deficiency anaemia, and improving long-term neurodevelopment outcome. Common concerns and potential risks related to DCC such as postpartum haemorrhage and neonatal hyperbilirubinemia are largely disproved. This position paper provides recommendations for healthcare providers and advice for parents in Malaysia, in the hope that DCC will be implemented nationwide soon as a standard of care.
A Scoping Review of Supervised Machine Learning Techniques in Predicting the Prevalence of Type 2 Diabetes Mellitus
Authors:   Earth Observation Centre, Institute of Climate Change, Universiti Kebangsaan Malaysia, 43600 Selangor Darul Ehsan, Malaysia.
Published: August 2024

It is crucial for medical practice to navigate from solely dependent on conventional data-analytical approaches for disease screening, diagnostics, and treatment plans to decisions that are configured rapidly through big data analytics from artificial intelligence algorithms. The fog- and edge-computing architectures built within the huge healthcare database systems would allow the applications of machine learning (ML) algorithms for disease predictions and forecasting capacities. This scoping review appraised the use of multiple ML methods for type 2 diabetes mellitus (T2DM) prediction. Search engines used were IEEE Xplore, JSTOR, PubMed, Sage, Scopus, Wiley, and WOS. Inclusion criteria included articles published within the past six years, open access and studies that focused on T2DM only. Out of 41 studies included, the most used ML method was Random Forest (n=33) and the most occurred best ML model (n=13). Customised Ensemble ML method adapted to the dataset was found to show the highest accuracy. However, there were insufficient study areas and samples in Southeast Asia countries, as there were differences in demographics and culture that affect the T2DM risk factors where computational resource and systems development were limited. We conclude ML methods can predict T2DM, from the system’s perspective its intra-operability is viable for use in healthcare systems.
The Effects of Labour Neuraxial Analgesia Used on Maternal and Neonatal Outcomes
Authors:   Department of Anaesthesiology and Intensive Care,  Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000 Cheras, Kuala Lumpur, Malaysia.
Published: August 2024

The effect of types of labour central neuraxial (CN) technique used on maternal mode of delivery (MOD) and neonatal Appearance, Pulse, Grimace, Activity and Respiration (APGAR) score were evaluated. Data of 1378 parturients who were aged ≥18 with singleton pregnancy at term (≥37 and ≤42 weeks’ gestation) and received labour CN analgesia were retrospectively reviewed. Their demographic data, types of CN technique used, maternal MOD and neonatal APGAR score were recorded. Labour CN techniques were performed in 19.36% parturients which mostly was epidural technique (16.76%). Parturients who used combined spinal epidural (CSE) technique for labour analgesia had more instrumental deliveries (IDs) compared to using epidural technique (22 (22.4%) vs. 76 (77.6%), p=0.011). Parturients who used CSE technique for labour analgesia had an increased likelihood of IDs by 2.044 (95% CI 1.186-3.253, p=0.01) and parturients who were nulliparous had higher risk by 2.110 (95% CI 1.299-3.249, p=0.03). The types of labour CN technique used did not affect the neonatal APGAR scores (APGAR score: Good [epidural 1182 (99.6%) vs. CSE 189 (99%) and Bad [epidural 5 (0.4%) vs. CSE 2 (1.0%)], p=0.252). In conclusion, the types of labour CN technique used affected the maternal MOD without affecting the neonatal outcome.
Difficult Intubation in Pediatric Due to Vocal Cord Granuloma: A Case Report
Authors:   Department of Otorhinolaryngology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000 Kuala Lumpur, Malaysia.
Published: August 2024

Vocal cord granuloma (VCG) is a benign laryngeal lesion. Common causes in adult are prolonged intubation or irritation as well as injury to vocal cord. In term of airway management, VCGs may lead to difficult intubation. We reported a case scenario of VCG during rapid sequence induction. A 4-month-old baby girl, with a diagnosis of recurrent diaphragmatic hernia. She was intubated for impending respiratory collapse prior to operation. Successful intubation with smaller endotracheal tube (ETT) size 3Fr with stylet at 3rd attempts by pediatric intensivist. Direct laryngoscope was done post operation. Finding was granuloma noted over the both posterior commissures. In the present case, the 4-month-old baby had no sign and symptom of vocal cord granuloma. However, she was at risk of develop VCG in view of the history of intubation for first operation of diaphragmatic hernia and possibility of laryngopharyngeal reflux due to the hernia. Difficult airway should be anticipated in this patient in view of the history of intubation and laryngopharyngeal reflux.
Influencia de la Autorregulación del Aprendizaje en el Rendimiento Académico del Alumnado de Secundaria
Authors: Álvarez-Pérez Pedro Ricardo , López-Aguilar David , Pérez-González Sofía Haydeé
Published: August 2024

Este trabajo analiza la capacidad de autorregulación del aprendizaje en estudiantes de secundaria y Bachillerato y su influencia en la realización de sus tareas académicas y en el rendimiento académico. Uno de los aspectos claves del proceso formativo del alumnado, en todas las etapas educativas, es la autorregulación en el aprendizaje, ya que en juego está el logro de las propias metas educativas. La autorregulación constituye, desde esta perspectiva, un elemento mediador en el proceso de adaptación académica y en la prevención del abandono escolar temprano. Siguiendo un método empírico-analítico ex post-facto, el objetivo del estudio fue analizar si el proceso de autorregulación seguido por estudiantes de ESO y Bachillerato influía en su rendimiento académico. Partiendo de una perspectiva socio-constructivista y tomando en consideración las fases del modelo cíclico de Zimmerman (2002) para la autorregulación del aprendizaje, se elaboró y aplicó un cuestionario a una muestra de 309 alumnos/as de Enseñanza Secundaria y Bachillerato. Los resultados obtenidos pusieron de manifiesto que hay relación entre la autorregulación del aprendizaje y el rendimiento en los estudios. Concretamente, aquellos estudiantes que obtuvieron mejores calificaciones académicas, lograron niveles elevados de autorregulación del aprendizaje, en sus tres dimensiones principales: planificación, ejecución y autoevaluación.