bluuebunny/crossref_metadata_2025 huggingface dataset:
Inflammatory biomarkers and cardiac injury in COVID-19 patients
Authors: Mumtaz Ayesha , Rehman Erum , Rahaman Mohammad Anisur , Rehman Shazia
Published: November 2022

Introduction

Cardiac injury has received considerable attention due to the higher risk of morbidity and mortality associated with coronavirus disease. However, in a developing country, there is a scarcity of data on cardiac injury in COVID-19 patients related to inflammatory biomarkers.

Methods

Therefore, the present research retrospectively analyzes data from three territorial hospitals in Pakistan's Punjab province to investigate the potential impact of the cardiac injury on the mortality and severity of COVID-19-infected patients. We evaluated 2,051 patients between January 16 and April 18, 2022, with confirmed COVID-19. The in-hospital mortality recorded for the selected sample size was about 16.28%.

Results

The majority of the participants were identified as male (64%) with a median age of 65 years. Also, fever, fatigue, and dyspnea were reported as common symptoms. An aggregate of 623 patients (30.38%) had a cardiac injury, and when these patients are compared to those without cardiac injury, the participants were significantly older and had more comorbidities with higher leukocyte counts, elevated levels of C-reactive protein, interleukin-6, procalcitonin, myohemoglobin, creatinine kinase-myocardial band, serum creatinine, high-sensitivity troponin-I, N-terminal pro-B-type natriuretic peptide had a significant amount of multiple ground-glass opacity and bilateral pulmonary infiltration in radiographic results. Participants with heart injury required more non-invasive or invasive mechanical respiration than those who did not have a cardiac injury. Individuals with cardiac injury had higher rates of sepsis, acute respiratory distress syndrome (ARDS), d-dimer concentration, and respiratory failure than those without cardiac injury. Patients who had had a cardiac injury died at a higher rate than those who had not suffered cardiac damage. In the multivariable logistic regression analysis, participants with cardiac injury showed greater odds of COVID-19 mortality and were found associated with older age (OR = 1.99, 95% CI = 0.04–3.19), elevated cardiac troponin I (OR = 18.64, 95% CI = 13.16–23.01), the complication of sepsis (OR = 10.39, 95% CI = 7.41–13.39) and ARDS (OR = 6.65, 95% CI = 4.04–8.91).

Conclusion

Cardiac injury is a frequent complication among patients with coronavirus-induced infection in Punjab, Pakistan, and it is significantly linked to a greater risk of in-hospital mortality.
Measure on innovation efficiency of China's pharmaceutical manufacturing industry
Authors: Zhong Shen , Liang Shuqi , Zhong Yuxin , Zheng Yunying , Wang Fengjun
Published: November 2022

Pharmaceutical manufacturing industry is an important industry to ensure human life safety. The innovation efficiency is a significant factor to stimulate the development of pharmaceutical manufacturing industry. At present, there are few studies on the innovation efficiency of pharmaceutical manufacturing industry. To fill this gap, this paper estimates the innovation efficiency of China's pharmaceutical manufacturing industry in 23 provinces of China from 2010 to 2020 based on the super-network SBM model and Global-Malmquist index. The results show that: (1) From the perspective of efficiency of research and development stage (ERDS), the ERDS of China shows an increasing trend, with the most prominent growth in the western region. (2) From the perspective of efficiency of economic transformation stage (EETS), although there are fluctuations in the EETS, the overall development is good. The EETS of the central region and western region is better than that of the eastern region. (3) By comparing the efficiency of the two stages, it is found that the change direction of the efficiency of the two stages is not necessarily the same in some provinces.
Purchasing behavior in rural areas for food products during the COVID-19 pandemic
Authors: Pappalardo Gioacchino , Selvaggi Roberta , Pittalà Michela , Bellia Claudio
Published: November 2022

Introduction

Most previous studies have investigated consumer purchasing behavior for food products in urban areas during the COVID-19 pandemic. In contrast, the present study is one of the very few to investigate consumer purchasing behavior for food products within rural areas.

Methods

To this end, research was conducted in Sicily taking as a case study a rural municipality whose population was subjected to a lockdown regime to contain the spread of the virus. The choice of carrying out the research in a rural rather than an urban area contributed to the emergence of new aspects concerning consumer behavior in rural areas during the COVID-19 emergency.

Results and discussion

The research reveals that the amount of money spent on food purchases, as well as the amount of food purchased, increased during the lockdown. In general, the research shows that COVID-19 impacted the purchasing behavior of consumers in rural areas even though they showed a high resilience and adaptation to the health emergency situation caused by the pandemic.
Safety Factor of Masonry Arches under Gravity Loads
Authors: Brandonisio Giuseppe , De Angelis Fabio , De Luca Antonello
Published: November 2022

In the present paper, a procedure is presented for the evaluation of the safety factor and the limit conditions of masonry arches subject to gravity loadings. The proposed procedure can be considered an extension of Heyman’s method for determining the geometrical safety factor. At variance with Heyman’s method, herein, the analysis of the static safety condition for the arch is performed by means of modified kinematic configurations of the arch obtained by encompassing settlements at the arch constraints. Furthermore, the procedure allows the identification of the critical locations of the hinges in the arch at the limit conditions. Moreover, the present procedure allows the determination of the geometrical vertical displacement that the crown of the arch can accommodate at the safety limit conditions. Finally, the proposed procedure is applied to a real case in order to show its effectiveness. Numerical results are reported and commented on in order to clarify the application of the proposed procedure for the definition of the safety factor of the arched structure and the evaluation of the critical geometrical configuration compatible with the limit conditions of the arch.
Preventive Effect of Nuciferine on H2O2-Induced Fibroblast Senescence and Pro-Inflammatory Cytokine Gene Expression
Authors: Charoensin Suphachai , Weera Wajaree
Published: November 2022

Human dermal fibroblasts play an important role in skin homeostasis by producing and degrading extracellular matrix components. They have more replicative senescence when exposed to environmental and oxidative insults, resulting in human skin aging. However, this phenomenon can be mitigated by antioxidant phytochemicals. The aim of the present study was to investigate the potential of nuciferine (an alkaloid from Nelumbo nucifera leaf) in preventing stress-induced fibroblast senescence by using a hydrogen-peroxide (H2O2)-induced senescence model. We found that H2O2 treatment resulted in a significant increase in senescence-associated β-galactosidase (SA-β-gal)-positive cells. Nuciferine-treated cells, however, showed a reduction in senescent phenotype. Furthermore, we observed the key molecular markers including the senescence-associated secretory phenotype (SASP) and cell cycle regulators. The mRNA levels of CXCL1, CXCL2, IL-6, and IL-8 (pro-inflammatory cytokines) reduced significantly in nuciferine-treated cells. The extracellular IL-6 and IL-8 levels were also decreased in treated cells, whereas the key cell cycle regulators (p16 and p21) were markedly affected by nuciferine at the highest concentration. The results of the present study clearly show that the preventive activity of nuciferine against H2O2-induced senescence in dermal fibroblasts is fundamental and promising for further applications in anti-aging product research and development.
Well-Defined pH-Sensitive Self-Assembled Triblock Copolymer-Based Crosslinked Micelles for Efficient Cancer Chemotherapy
Authors: Mohamed Mohamed Alaa , Singh Ajay , Prasad Paras N. , Cheng Chong
Published: November 2022

Delivery of chemotherapeutics to cancer cells using polymeric micelles is a promising strategy for cancer treatment. However, limited stability of micelles, premature drug release and off-target effect are the major obstacles that restrict the utilization of polymeric micelles as effective drug delivery systems. In this work, we addressed these issues through the innovative design of targeted pH-sensitive crosslinked polymeric micelles for chemotherapeutic delivery. A well-defined triblock copolymer, poly(ethylene glycol)-b-poly(2-hydroxyethyl methacrylate)-b-poly(butyl acrylate) (PEG-b-PHEMA-b-PBA), was synthesized by living radical polymerization, and then modified by using 4-pentenoic anhydride to incorporate pendant crosslinkable alkene groups in the middle block. The resulting copolymer underwent self-assembly in aqueous solution to form non-crosslinked micelles (NCMs). Subsequently, intramicellar thiol–ene crosslinking was performed by using 1,4-butanediol bis(3-mercaptopropionate) to give crosslinked micelles (CMs) with pH-sensitive crosslinks. The targeted CM (cRGD-DOX10-CM5) was readily prepared by using tumor-targeting ligand cyclo(Arg-Gly-Asp-D-Phe-Cys) (cRGD) together with the 1,4-butanediol bis(3-mercaptopropionate) during the crosslinking step. The study of cumulative DOX release revealed the pH-sensitive feature of drug release from these CMs. An in vitro MTT assay revealed that NCMs and CMs are biocompatible with MCF 10A cells, and the samples exhibited significant therapeutic efficiency as compared to free DOX. Cellular uptake studies confirmed higher uptake of cRGD-DOX10-CM5 by MCF 10A cancer cells via cRGD-receptor-mediated endocytosis as compared to the corresponding analogues without cRGD. These results indicate that such pH-responsive crosslinked PEG-b-PHEMA-b-PBA-based micelles are therapeutically effective against cancer cells and hold remarkable promise to act as smart drug delivery systems for cancer therapy.
Fluorescence vs. Phosphorescence: Which Scenario Is Preferable in Au(I) Complexes with Benzothiadiazoles?
Authors: Khisamov Radmir. M. , Ryadun Alexey A. , Konchenko Sergey N. , Sukhikh Taisiya S.
Published: November 2022

The photoluminescence of Au(I) complexes is generally characterized by long radiative lifetimes owing to the large spin-orbital coupling constant of the Au(I) ion. Herein, we report three brightly emissive Au(I) coordination compounds, 1, 2a, and 2b, that reveal unexpectedly short emission lifetimes of 10–20 ns. Polymorphs 2a and 2b exclusively exhibit fluorescence, which is quite rare for Au(I) compounds, while compound 1 reveals fluorescence as the major radiative pathway, and a minor contribution of a microsecond-scale component. The fluorescent behaviour for 1–2 is rationalized by means of quantum chemical (TD)-DFT calculations, which reveal the following: (1) S0–S1 and S0–T1 transitions mainly exhibit an intraligand nature. (2) The calculated spin-orbital coupling (SOC) between the states is small, which is a consequence of overall small metal contribution to the frontier orbitals. (3) The T1 state features much lower energy than the S1 state (by ca. 7000 cm−1), which hinders the SOC between the states. Thus, the S1 state decays in the form of fluorescence, rather than couples with T1. In the specific case of complex 1, the potential energy surfaces for the S1 and T2 states intersect, while the vibrationally resolved S1–S0 and T2–S0 calculated radiative transitions show substantial overlap. Thus, the microsecond-scale component for complex 1 can stem from the coupling between the S1 and T2 states.
Design of an Internal/External Bicontinuous Conductive Network for High-Performance Asymmetrical Supercapacitors
Authors: Shi Anran , Song Xiumei , Wei Lei , Ma Huiyuan , Pang Haijun , Li Weiwei , Liu Xiaowei , Tan Lichao
Published: November 2022

High-energy density supercapacitors have attracted extensive attention due to their electrode structure design. A synergistic effect related to core–shell structure can improve the energy storage capacity and power density of electrode materials. The Ni-foam (NF) substrate coupled with polypyrrole (PPy) conductive coating can serve as an internal/external bicontinuous conductive network. In this work, the distinctive PPy@FeNi2S4@NF and PPy@NiCo2S4@NF materials were prepared by a simple two-step hydrothermal synthesis with a subsequent in situ polymerization method. PPy@FeNi2S4@NF and PPy@NiCo2S4@NF could deliver ultrahigh specific capacitances of 3870.3 and 5771.4 F·g−1 at 1 A·g−1 and marvelous cycling capability performances of 81.39% and 93.02% after 5000 cycles. The asymmetric supercapacitors composed of the prepared materials provided a high-energy density of over 47.2 Wh·kg−1 at 699.9 W·kg−1 power density and 67.11 Wh·kg−1 at 800 W·kg−1 power density. Therefore, the self-assembled core–shell structure can effectively improve the electrochemical performance and will have an effective service in advanced energy-storage devices.
Effect of Cordyceps spp. and Cordycepin on Functions of Bones and Teeth and Related Processes: A Review
Authors: Jędrejko Karol , Kała Katarzyna , Sułkowska-Ziaja Katarzyna , Pytko-Polończyk Jolanta , Muszyńska Bożena
Published: November 2022

Cordyceps spp. (belonging to the Ascomycota group) are entomopathogenic mushrooms that have traditionally been used in ethnomedicine in Asian countries such as China, Japan, Korea, and India. They are unique parasites of larvae of selected species of moths. Cordyceps militaris is one of the best sources of cordycepin. Worldwide, osteoporosis is one of the most common bone diseases, whose pharmacotherapy includes various medical interventions; however, the research and development of new molecules and new drugs is required. The impact of adenosine receptors (ARs) on the purinergic signaling pathway may regulate proliferation, differentiate dental pulp stem cells and bone marrow, and modulate osteogenesis and bone repair. The aim of the review was to collect and analyze the available data on the effects of Cordyceps spp. or cordycepin on bone function and related processes. To the best of our knowledge, this is the first systematic review in this perspective, not necessarily using mushroom raw material or even the isolated parent compound cordycepin, but new molecules that are analogs of nucleosides, such as those from C. militaris. This review found that Cordyceps spp. or isolated cordycepin interacts via the AR, 5′ adenosine monophosphate-activated protein kinase (AMPK), and adenosine-5′-triphosphate (ATP) signaling pathway and evaluated their impact on bones, teeth, and dental pulp. Cordyceps spp. was found to have the potential to develop regenerative medicines, thus providing an opportunity to expand the treatment or intervention methods in the recovery after traumatic injuries, convalescence, and terminal-stage or devastating diseases.
TiO2 Catalyzed Dihydroxyacetone (DHA) Conversion in Water: Evidence That This Model Reaction Probes Basicity in Addition to Acidity
Authors: Abdouli Insaf , Dappozze Frederic , Eternot Marion , Guillard Chantal , Essayem Nadine
Published: November 2022

In this paper, evidence is provided that the model reaction of aqueous dihydroxyacetone (DHA) conversion is as sensitive to the TiO2 catalysts’ basicity as to their acidity. Two parallel pathways transformed DHA: while the pathway catalyzed by Lewis acid sites gave pyruvaldehyde (PA) and lactic acid (LA), the base-catalyzed route afforded fructose. This is demonstrated on a series of six commercial TiO2 samples and further confirmed by using two reference catalysts: niobic acid (NbOH), an acid catalyst, and a hydrotalcite (MgAlO), a basic catalyst. The original acid-base properties of the six commercial TiO2 with variable structure and texture were investigated first by conventional methods in gas phase (FTIR or microcalorimetry of pyridine, NH3 and CO2 adsorption). A linear relationship between the initial rates of DHA condensation into hexoses and the total basic sites densities is highlighted accounting for the water tolerance of the TiO2 basic sites whatever their strength. Rutile TiO2 samples were the most basic ones. Besides, only the strongest TiO2 Lewis acid sites were shown to be water tolerant and efficient for PA and LA formation.
Edible Pueraria lobata-Derived Exosomes Promote M2 Macrophage Polarization
Authors: Wu Jiaqi , Ma Xiaoyu , Lu Yu , Zhang Tao , Du Zuoqin , Xu Jin , You Jingcan , Chen Ni , Deng Xin , Wu Jianbo
Published: November 2022

Pueraria lobata (known as Gegen) is an edible and medicinal herb that is a nutritious medicine food homology plant in China. Previous studies indicated that P. lobata plays an essential role in controlling cytokines. However, the exact mechanism of the inflammation response is still unknown. In this study, we observed the uptake of P. lobata-derived exosomes (Exos) in isolated mouse macrophages. Our results show that P. lobata-derived Exos shift M1 macrophages toward the M2. These data present that P. lobata and puerarin might exert and enhance anti-inflammatory effects through the activation of exosomes and shifts in macrophage polarization, providing strong evidence for the application of P. lobata as novel an anti-inflammatory therapeutic biomaterial.
Vaccination against tick-borne encephalitis
Authors:   Federal Budgetary Healthcare Institution «Medical and Sanitary Unit No. 52» of the Federal Medical and Biological Agency. FBUZ «MSCH No. 52» of the FMBA of Russia, Zubova Y. A.
Published: November 2022

Research on the creation of a vaccine against CE in the USSR was started in 1937 shortly after the isolation and initial study of the CE virus. In 1939, a team of authors led by Professors A. A. Smorodintsev and E. N. Levkovich prepared the first samples of the CE vaccine, which was a 5 % suspension of brain tissue of mice infected with tick-borne encephalitis virus, inactivated with formalin at a concentration of 1:600–1:750. To this day, many vaccines have been developed, which are an integral salvation against the deadly virus.
From Hippocrates to the present. Institutionalization (transformation) of efferent treatment methods
Authors:   Private Institution Educational Organization of Higher Education Moscow branch of the Medical University «Reaviz», Moscow, Pakina V. A. , Krasnova M. Yu. ,   Private Institution Educational Organization of Higher Education Moscow branch of the Medical University «Reaviz», Moscow
Published: November 2022

The article is devoted to the issue of institutionalization (transformation) of efferent treatment methods in the world, from Hippocrates to the present day. The history of efferent treatment methods is quite relevant in the modern world in connection with the development of science and advanced methods of treating patients. The development process is complex and thorny, and in order to avoid possible serious mistakes, it is useful to turn to history: studying the experience of past centuries helps to identify patterns in the development of a particular process. The authors of the article consider the institutionalization (transformation) of efferent treatment methods as a process associated with the formation of the main components, i.e. clinical training and practical application of this method by doctors. It is shown that the formation of the clinical component consisted in the introduction of clinical training methods, stages in approaches to treatment, and the formation of an effective system for monitoring the data obtained during experiments. The formation of a practical component for doctors was expressed in the expansion of the scope of knowledge and horizons on this topic, change in the doctor's thinking on efferent treatment methods, and the inclusion of patients with different nosological forms in the treatment algorithm. Prospects for fur ther development of ef ferent therapy have been proposed.
Reminder for patients with constipation
Authors:   Hospital No. 4, Ufa, Korobka Y. I.
Published: November 2022

Constipation is slow, difficult or systematically insufficient defecation (bowel emptying). Constipation is a serious medical and social problem. In developed countries, 30 to 50 % of the working population and 5 to 20 % of children suffer from constipation to some extent. In the elderly, constipation occurs 5 times more often than in young people.
Study on noise reduction method of main noise transmission path of axial piston pump with new damping material
Authors: Pan Yang , Liu Rui , He Xiao hui
Published: November 2022

Axial piston pump is complex fluid machinery with mechanical fluid coupling, and it has the characteristics of multiple noise sources. In order to solve the high noise problem of axial piston pump, this paper proposes a noise reduction method by identifying the main noise sources of
axial piston pump and laying new damping materials to reduce noise. It breaks through the existing method of optimizing the parameters of piston pump shell and valve plate structure. A multi-parameter trajectory sensitivity identification and noise reduction method for vibration transmission
path of axial piston pump is proposed in this paper. First, the lumped parameter method is used to establish the mathematical model of vibration transmission path of axial piston pump. The sensitivity of structural vibration response to transmission path multi-parameters are analyzed based
on trajectory sensitivity method. The most sensitive parameters in the main noise transmission path are determined. Then, the experimental study of radiated noise transmission path of axial piston pump is carried out. A new type of viscous damping material is proposed to reduce the noise on
the transmission path of the main noise source. The experimental results show that the noise of piston pump is reduced by 2.32 dB. The research results provide a new method and way for the design and manufacture of low noise piston pump.
Experimental investigation of cavitation-induced noise and vibration in a centrifugal pump
Authors: Kaya Mehmet , Erol Haluk
Published: November 2022

Cavitation has become a serious concern threatening operational stability as the need for high-speed machinery has grown. In this study, noise (sound pressure level) and vibrations (structural) were measured in a radial flow centrifugal pump for design and off-design conditions under
cavitation. Because the structure of a particular noise/vibration spectrum (as well as its total level) is affected by the operating conditions and stage of cavitation within the pump, a detailed analysis the noise/vibration spectra during the pumping process was carried out to detect of the
cavitation phenomenon's progression. We aim to identify the association between noise/vibration and the corresponding net positive suction head value at different flow rates. The results showed that the cavitation structure affects the vibration/noise behavior of the pump. Moreover, total
noise level measurements at partial flow rates cannot be used to diagnose full cavitation breakdown, whereas total noise level measurements can be used to detect cavitation intensity at higher flow rates than the optimum operating point.
A hybrid method for creating auralizations of vibroacoustic systems
Authors: Miller A. Jared , Sommerfeldt Scott D. , Blotter Jonathan D. , Copley David C.
Published: November 2022

A hybrid method for creating a unified broadband acoustic response from separate low-frequency and high-frequency simulation responses is proposed. This hybrid method is ideal for creating simple auralizable approximations of complex acoustic systems. The process consists of four steps:
1) creating separate low- frequency and high-frequency responses of the system of interest, 2) interpolating between the two responses to get a single broadband magnitude response, 3) introducing amplitude modulation to the high-frequency portion of the response, and 4) calculating approximate
phase information. Once the appropriate frequency response is obtained, an inverse fast Fourier transform is applied to obtain an impulse response. An experimental setup of an acoustic cavity with one flexible wall is used to validate the hybrid method. The simulated and measured impulse responses
are both convolved with various excitation signals, so the validity of the approach could be assessed by listening. Listening tests confirm that the method is able to produce realistic auralizations. The degree of realism is subject to a few limitations, such as pitch differences and dependence
on the presence of transients in the excitation signal, but these limitations are incidental and only indirectly related to the proposed method.
Colonização às avessas? O domínio da televisão brasileira em Angola, Moçambique e Portugal em 2021
Authors:   , Rios Ricardo Matos de Araújo
Published: November 2022

O presente trabalho tem o objetivo de compreender como a televisão brasileira e seus canais impactam a televisão em Angola, Moçambique e Portugal e como estes afetaram a cultura televisiva destes Estados. O interesse da pesquisa está em verificar a possibilidade de uma “colonização às avessas”, em que o Brasil coloniza por meio da via cultural os Estados analisados. Como objetivos específicos, o trabalho propõe-se a discutir a importância e a eficácia da televisão brasileira como soft power do Brasil e discutir a construção, por meio da TV, de Tensões Interculturais ou Interações Étnicas do Brasil. O corpus é formado por duas frentes de análise, a saber: 1) análise socio-histórica dos modelos televisivos de Angola, Moçambique e Portugal, com levantamento do processo de inserção da TV brasileira nos três Estados; 2) análise da programação diária dos três principais canais em audiência de cada Estado no período de 01 de janeiro de 2021 a 31 de dezembro de 2021 (para tal, serão utilizados o Índice de Colonização por Canal [ICC] e o Índice Nacional de Colonização Televisiva [INCT], desenvolvidos para este trabalho). Espera-se, ao final do processo analítico, observar se há Colonização às Avessas exercida pela televisão brasileira nos Estados analisados, além de contribuir com a discussão sobre a ligação entre mídia e política externa.
Análise da matriz DAFO no sistema de monitoramento RFID no posto de fiscalização da Suframa
Authors: Marques Ricardo Jander Cardoso , Ferreira Márcio Antônio Couto , Reis Dércio Luiz , Craveiro Joaquim Maciel da Costa , Barbosa Edilson Pinto , Bichara Julimar da Silva
Published: November 2022

A movimentação em posto de fiscalização e terminais portuários desenvolve-se a cada ano e com este desenvolvimento, é importante utilizar tecnologias que podem diminuir o tempo gasto em circunstâncias adversas, tais como, encontrar e verificar um material/contêiner dentro do terminal portuário de forma rápida e produtiva. Este sistema pode ser executado com a tecnologia RFID (Radio Frequency Identification), que utiliza radiofrequência para captar as informações enviadas pelos transmissores, decodificando e transmitindo essas informações para o software, o que permite a verificação em tempo real. Este artigo faz uma análise utilizando a matriz DAFO (Debilidades, Ameaças, Fortalezas e Oportunidades) sobre a eficácia do sistema RFID na observação e rastreamento de materiais dentro de terminais portuários, utilizando a metodologia de investigação qualitativa bem como uma revisão bibliográfica. A partir da matriz DAFO, o que se pôde observar foi que mesmo diante de debilidades e ameaças o sistema RFID é uma tecnologia bastante promissora para as empresas tendo em vista que esses pontos negativos podem ser corrigidos e neutralizados.
Uso de lama residual de concreto como agregado miúdo para produção de novos concretos
Authors: Farias Uiliana Márcia da Silva Mercês , Leite Mônica Batista , De Cerqueira Leonardo Brito
Published: November 2022

Uma das consequências do alto consumo do concreto oriundo de centrais dosadoras de concreto (CDC) é a geração de resíduos, durante e após o processo de fabricação, na forma de lama residual do concreto (LRC). Este resíduo é proveniente da lavagem interna dos balões dos caminhões betoneira, das operações de limpeza do ponto de carga/descarga e de concretos que retornam à CDC. O presente estudo analisou as propriedades de concretos produzidos com 20 e 40 % de lama residual de concreto usada como agregados miúdos reciclados (AMR). Os resultados foram analisados estatisticamente através da ANOVA e observou-se ganhos de resistência à compressão axial de até 28 % e redução de até 62 % do índice de vazios nas misturas com 20 % de substituição do agregado miúdo natural pelo agregado miúdo reciclado. Para as misturas com 40 % de LRC os resultados foram pelo menos semelhantes aos resultados obtidos nos concretos de referência. Desse modo, pode-se afirmar que a LRC apresentou grande potencial de utilização como AMR em substituição parcial aos agregados miúdos naturais para produção de novos concretos.
Plantas medicinais e aromáticas comercializadas no mercado municipal de Manaus Adolpho Lisboa
Authors: Da Silva Janaina Teonilia Libório , Pinheiro Érika Cristina Nogueira Marques , Ferreira Grace Anne Coelho
Published: November 2022

A utilização de espécies de plantas com propriedades medicinais e aromáticas têm origem antiga, e se estende até os dias atuais, atuando como fonte de prevenção e tratamento para vários tipos de doenças. Essas plantas também servem de matéria-prima para a produção de medicamentos na medicina moderna. Podem ser cultivadas em pequenos espaços suspensos, tipo canteiro ou vasos nos quintais das residências, mas também podem ser encontradas em feiras, mercados e estabelecimentos comerciais. Dessa forma, o trabalho objetivou realizar um levantamento das espécies de plantas medicinais e aromáticas comercializadas no Mercado Municipal Adolpho Lisboa na cidade de Manaus/Am e suas respectivas indicações de uso. Além de relacionar as espécies de plantas comercializadas por diferentes feirantes, identificar sua classificação botânica e verificar as indicações terapêuticas atribuídas pelos raizeiros.  Ademais, buscou-se determinar qual família é mais utilizada e descrever as partes comercializadas de cada espécie (raiz, caule, folha e/ou semente). Através das visitas feitas ao mercado e da coleta de dados foram identificadas 67 espécies vegetais, sendo 54 de uso medicinal, 13 de uso medicinal e aromático.
Fuzzy expert system based on the principles of multi-criteria choice of alternatives using fuzzy inference rules
Authors:   Reshetnev Siberian State University of Science and Technolog, Popov A.A. , Ivanova K.S. , Artyshko A.A. , Mironov D.E. , Nechaev N.S.
Published: November 2022

The article presents the results of the development of the expert system software module based on fuzzy logic methods, which allows calculating the most profitable alternative based on a certain evaluation matrix of alternatives and criteria, and certain selection rules. The problem of increasing the efficiency of decision-making of various tasks with the help of a fuzzy expert system is solved. The paper shows the implementation of one of the modules of the expert system using the fuzzy logic apparatus in order to select a journal to publish an article.
Reliability of telecommunication systems of underwater robotic complexes
Authors:   Makarov State University of Maritime and River Fleet, Martynov V.L. , Shimanskaya M.S. , Krechetova E.V. , Shimanskaya G.S. ,   St. Petersburg State University of Architecture and Civil Engineering
Published: November 2022

Quantitative assessment of the reliability of technical means is given one of the important places in the design and creation of not only telecommunications systems, but also all radio–electronic equipment of underwater robotic complexes (RTK). The problem of reliability is a key one in solving the problems of ensuring the efficiency of all technical systems and the safety of their operation. Taking into account the fact that telecommunications issues play a major role in the exchange of information between correspondents, they can be considered as an integral part of the integrated search engine of the RTK, which ensures the performance of one of the main functions in the link of its management. This article is devoted to the study of the issues of the theory of reliability of telecommunications systems as part of integrated RTK search engines, justified by mathematical calculations.
Antimicrobial activity of Strobilanthes crispus leaves aqueous extract and green biosynthesis iron oxide nanoparticles against selected human pathogens
Authors: Suboh Siti Fatimah , Mahat Annie Maria , Yusof Mohd Helmy , Wan Abdul Razak Wan Razarinah
Published: November 2022

Strobilanthes crispus is a plant species from the family of Acanthaceae, known as ‘pecah kaca’ or ‘jin batu’ among Malaysians. S. crispus have medicinal properties that are anti-diabetic, diuretic, laxative, antimicrobial and wound healing properties. The study aimed to investigate the antimicrobial activity of S. crispus leaves aqueous extract and iron oxide nanoparticles (IONP) against the selected human pathogens namely Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, Bacillus cereus ATCC 11778, Salmonella typhi ATCC 14028, Candida albicans ATCC 10231 and Aspergillus niger ATCC 16404. The antimicrobial properties of S. crispus leaves aqueous extract and IONP was measured through the disc diffusion test. The inhibitory action of S. crispus leaves aqueous extract was only visible against E. coli; at 25 mg/ml with mean diameter zone of inhibition was 7.3 ± 0.017 mm and at 50 mg/ml (8.7 ± 0.017 mm). However, IONP was able to show better antimicrobial activity against all selected human pathogens compared to S. crispus leaves aqueous extract. The largest mean diameter zone of inhibition exhibited was 11.50 ± 0.288 mm at 0.2 M IONP and 9.00 ± 0.577 mm at 0.3 M IONP against S. aureus. The properties and structural of IONP was investigated through UV-Vis, SEM, XRD and FTIR method. Hence, these data concluded that S. crispus leaves aqueous extract and IONP have antimicrobial properties against selected human pathogens thus act as potential antimicrobial agent in pharmaceutical industry.
Growth of Ru-doped β-FeSi2 polycrystalline thin films by RF magnetron sputtering
Authors: Terai Yoshikazu , Yoshihara Ren , Oishi Yuya
Published: November 2022

Ternary silicide β-(Fe1−x
Ru
x
)Si2 polycrystalline thin films were fabricated by RF magnetron sputtering. The crystal structure of β-(Fe1−x
Ru
x
)Si2 was the same orthorhombic (space group: Cmca) as β-FeSi2 in the Ru composition of 0 ≤ x ≤ 0.63. The lattice constants increased with increasing Ru composition, and Vegard’s law was obtained. The wavenumber of the Raman line of Fe−Fe and Fe−Si vibrations shifted to a lower wavenumber with increasing Ru composition. The 1.5 μm photoluminescence (PL) was observed in Si/β-(Fe1−x
Ru
x
)Si2/Si double heterostructure (DH) with x = 0.57. The PL lifetime of the Ru-doped DH sample was shorter than that of the β-FeSi2 (x = 0) DH sample.
Heterogeneous integration of lithium tantalate thin film on quartz for high performance surface acoustic wave resonator
Authors: Chen Yang , Wu Jinbo , Zhao Xiaomeng , Li Zhongxu , Ke Xinjian , Zhang Shibin , Zhou Min , Huang Kai , Ou Xin
Published: November 2022

Surface acoustic wave (SAW) resonator based on the piezo film on a foreign substrate is promising to enhance the performance of radio frequency filters. In this work, the 4 inch wafer-scale lithium tantalate thin film on quartz (LTOQ) heterogenous substrate was fabricated by ion-cut process. The cut angle of quartz was optimized to achieve high-quality factor (Q) based on finite element analysis. The average film thickness and the film nonuniformity for the whole wafer are 602 nm and ±2.2%, respectively. The lithium tantalate film exhibits single-crystalline quality where the full width at half-maximum of high-resolution X-ray diffraction rocking curve is 47.4 arcsec. The shear horizonal surface acoustic wave resonator based on the LTOQ structure exhibits a maximum Bode-Q exceeding 3000 and the electromechanical coupling coefficient of 10.26%. The temperature coefficient of frequency at resonant frequency and anti-resonant frequency are −25.21 ppm °C−1 and −35.22 ppm °C−1, respectively.
2D scalar wave modelling of apodized RF BAW resonators for transverse mode analysis
Authors: Wu Ting , He Yi-wen , Wong Yu-po , Li Wuping , Bao Jing-fu , Hashimoto Ken-ya
Published: November 2022

This paper proposes the use of a two-dimensional scalar wave model for fast analysis of apodized AlN-based radio frequency bulk acoustic wave devices. First, the working principle and model setup is introduced. Only one particular Lamb mode (S1−) is considered, and its behavior is modeled by a simple scalar wave equation looking from the top surface. Multiple layers are added to the side boundaries so that mode conversion to other modes is treated as leakage to surroundings. The wavenumber of field distribution for each resonance mode is calculated, and then its excitation coefficient, quality factor, and resonance frequency are derived. The device input admittance is calculated by applying derived parameters to the equivalent circuit. A series of oval-shaped AlN-based film bulk acoustic resonator devices are simulated and compared with experimental results. The theoretical results agreed well with the experimental ones, and accuracy and effectiveness of the present analysis are verified.
Explosive atmosphere analysis for simulation of acetone source of release using ALOHA software
Authors: Tugyi Levente , Siménfalvi Zoltán , Szepesi Gábor L.
Published: November 2022

The analysis of the explosive atmosphere for the simulation of acetone using ALOHA (Arial Location Hazardous Atmosphere) was evaluated against a previous evaporation measurement in the present study. With ALOHA, evaporation from large liquid surfaces can be studied on a global scale. Such fluid surfaces can be formed during high leakage from process units. In third world countries, there are still operating pools that, under normal operating conditions, contain large quantities of flammable and explosive substances that can be a source of highly explosive atmospheres. In the more developed countries of Europe, you are more likely to encounter puddles during overfilling and dumping. Unlike under normal operating conditions, failure may result in the formation of large liquid surface in storage salvage tray or transport tank leaks. The simulation considers several boundary conditions, such as the type and temperature of the solid or porous medium on which the fluid surface is located, as well as different weather factors. An additional advantage of the software is that it can be used to investigate the extent of hazardous areas geographically anywhere, depending on different concentrations.
Side Information-based distributed source coding with Low-Density Parity-Check code
Authors:   Department of Science and Engineering, Specialty of Electronic Information Engineering, DianChi College of Yunnan University, Kunming, China., Chen Hui
Published: November 2022

Considering the shortcomings of the existing Distributed Source Coding schemes on the bit error rate and the compression ratio, a side information-based distributed source coding scheme with Low-Density Parity-Check code is proposed. In the design of source encoder, redundancy is used to provide error protection, which is similar to insert redundancy to error protection in convolution coding; Set redundancy and Side Information approach is applied in the paper. Because of the correlation along the source, Low-Density Parity-Check code based Slepian-Wolf bound is adopted to implement the distributed source coding strategy. Experimental results are shown that the proposed method in paper can reach high compression ratio when the correlation among neighboring symbols is strong. The bit error rate of the sequence can be kept low between the sources are weak. It is an efficient distributed source coding scheme and is easy to be implemented.
Crowdfunding Platform Recommendation Algorithm Based on Collaborative Filtering
Authors:   Shaanxi University of Science and Technology, Xi'an, China., Li Yaming , Liu Jiahao ,   Shaanxi University of Science and Technology, Xi'an, China., Jin Yuying ,   Xi'an International Studies University, Xi'an, China., Fan Xinxin ,   University of Electronic Science and Technology of China, Chengdu, China., Wang Bixi ,   Xi'an University, Xi'an, China.
Published: November 2022

Crowdfunding platforms are a novel method of internet fundraising. The production of data from the crowdfunding platform has increased, but the benefits of this data have not. This has led to a state of "information overload." User-specific recommendation systems driven by data mining can play an effective role in solving this problem. This study introduces a collaborative filtering system that is driven by its end-users by fusing user input with the closest neighbor technique from machine learning. The results of this test demonstrate that the algorithm can provide useful project suggestions to those who utilize the crowdfunding site.
Creating Secure File Systems in Open-Source Operating Systems
Authors: Ochilov Nizomiddin
Published: November 2022

The relevance of this study is determined by insecure data storage on personal computers, as it is the main operating system that performs authentication and file access control. Bypassing these security rules is possible in case of using another open-source operating system on the same personal computer. The aim of this work is the research and development of file encryptors, disk encryptors and file system encryptors. Each of them has its shortcomings which manifest themselves during development. Combining the advantages of file encryptors and file system encryptors helped to overcome those shortcomings. The userspace filesystem library was used for this purpose. The study involved the methods aimed at designing and developing the Udev daemon file system for Linux using the OpenSSL library. The file system design was mathematically modelled and formally verified through a test parser. The file system also has its own authentication and authorization procedures to provide uniform access across multiple operating systems. The Udev daemon file system is the result of this work. Each file is encrypted with a separate key to protect against cryptanalysis. This key is encrypted with the owner’s private key, thereby enabling him/her to change the ownership. The passphrase is used to decrypt the user’s private key. The developed file system has passed authentication and access control testing successfully. The file system shows best performance with file sizes 1 KB to 256 MB. Encryption-caused performance degradation was also measured and found to be within acceptable limits. This Udev daemon stackable file system is available for all Unix clones with OpenSSL libraries. The prospects for further work are the development of a file system using several combined methods from a list of existing design and development methods for file systems.
Analyzing University Writing Education for Foreign Students
Authors:   Korean Association for Literacy, Song Myung Jin
Published: November 2022

This study aimed to prove the effect of academic writing education for foreign students and recommend directions for university writing education for foreign students accordingly. Therefore, a survey on academic literacy was conducted for foreign students who attended a lecture on  at a university located in the metropolitan area in the first semester of 2022; the reports that the students submitted were analyzed from the perspective of academic writing. Although the foreign students attending the course on  lacked Korean language skills, they had writing experience in their home country and were confident about their writing skills. High writing self-efficacy typically translates into high academic writing self-efficacy, and this held true for the foreign students as well. According to the academic literacy survey results, the students had considerable knowledge and information related to academic writing. They stated that they had acquired this knowledge and information through , and the theoretical contents of the course had a positive effect on their academic writing skills. The foreign students had to receive Korean-centered education because of their lack of Korean language skills. However, they had basic writing skills and were able to perform well in academic writing. Therefore, university writing education for foreign students should be designed in the direction of improving writing ability and, not Korean language ability.
The Analysis of Compositions of University Freshmen According to the Difference and Deferral
Authors:   Korean Association for Literacy, Kang Jiyoung
Published: November 2022

This paper aims to analyze the process in which learners derive meaning from writing. Considering the act of writing as well as the act of writing itself as the process of generating meaning field, the compositions of first-year university learners under the three questions with a similar context in Michael Sandel’s “What is justice?” are analyzed. For the detailed analysis, Difference and Deferral from Derrida is applied. Compositions are classified as; first, the same answer to all three questions, second, the same answer on the two questions, third, each of answers on the three questions. Learners showed different reasons and patterns even if they were choices with the same orientation. It could be analyzed that text in itself can not be a fixed entity, but a becoming field that changes endlessly. Based on this study, learning and teaching strategies can be established with the goal of learners as independent and active writers.
Subject and sentence change patterns of public service advertisement language: Focusing on print public service advertisements from 1983 to 2020
Authors:   Korean Association for Literacy, Ko Hye Won
Published: November 2022

This study analyzes the changes in the subject and linguistic characteristics of print public service advertisements over 40 years and examines the change in persuasion strategies and expressions of public service advertisement language. First, looking at the change in the subject of public service advertisements in print from around 2000, the fields for social community and natural environment increased, and for economic and social themes it decreased. This indicates a change in the focus of social issues. Next, we examined the changes in a speaker’s attitude and persuasion strategy over time by analyzing the sentence length, calligraphy, and an analysis of ending. The number of words per sentence has been reduced by more than 20% over 40 years, The imperative sentence have increased, the propositive sentence have decreased, Hashibsiyo is decreasing and haeyo is increasing rapidly. The reason for this phenomenon is that the public service advertisement language is changing in a softer, non-deterministic, and subjective direction. This demonstrates that a change in the spirit of the times can be determined through the change of the subject and sentence type of the public service advertisements in print.