bluuebunny/crossref_metadata_2025 huggingface dataset:
The Recent Development in Chemoresistive-Based Heterostructure Gas Sensor Technology, Their Future Opportunities and Challenges: A Review
Authors: Alam Mir , Pooja Pheiroijam , Aamir Muhammad , Souayeh Basma , Mushtaq Shehla , Khan Muhammad , Amin Muhammad , Khan Kaffayatullah , Shajahan Shanavas
Published: May 2022

Atmospheric pollution has become a critical problem for modern society; therefore, the research in this area continually aims to develop a high-performance gas sensor for health care and environmental safety. Researchers have made a significant contribution in this field by developing highly sensitive sensor-based novel selective materials. The aim of this article is to review recent developments and progress in the selective and sensitive detection of environmentally toxic gases. Different classifications of gas sensor devices are discussed based on their structure, the materials used, and their properties. The mechanisms of the sensing devices, identified by measuring the change in physical property using adsorption/desorption processes as well as chemical reactions on the gas-sensitive material surface, are also discussed. Additionally, the article presents a comprehensive review of the different morphologies and dimensions of mixed heterostructure, multilayered heterostructure, composite, core-shell, hollow heterostructure, and decorated heterostructure, which tune the gas-sensing properties towards hazardous gases. The article investigates in detail the growth and interface properties, concentrating on the material configurations that could be employed to prepare nanomaterials for commercial gas-sensing devices.
Simultaneous Release of Silver Ions and 10–Undecenoic Acid from Silver Iron–Oxide Nanoparticles Impregnated Membranes
Authors: Nechifor Gheorghe , Grosu Alexandra Raluca , Ferencz (Dinu) Andreea , Tanczos Szidonia-Katalin , Goran Alexandru , Grosu Vlad-Alexandru , Bungău Simona Gabriela , Păncescu Florentina Mihaela , Albu Paul Constantin , Nechifor Aurelia Cristina
Published: May 2022

The bio-medical benefits of silver ions and 10–undecenoic acid in various chemical-pharmaceutical preparations are indisputable, thus justifying numerous research studies on delayed and/or controlled release. This paper presents the effect of the polymer matrix in the simultaneous release of silver ions and 10–undecenoic acid in an aqueous medium of controlled pH and ionic strength. The study took into consideration polymeric matrices consisting of cellulose acetate (CA) and polysulfone (PSf), which were impregnated with oxide nanoparticles containing silver and 10–undecenoic acid. The studied oxide nanoparticles are nanoparticles of iron and silver oxides obtained by an accessible electrochemical method. The obtained results show that silver can be released, simultaneously with 10–undecenoic acid, from an impregnated polymeric membrane, at concentrations that ensure the biocidal and fungicidal capacity. Concentrations of active substances can be controlled by choosing the polymer matrix or, in some cases, by changing the pH of the target medium. In the studied case, higher concentrations of silver ions are released from the polysulfone matrix, while higher concentrations of 10–undecenoic acid are released from the cellulose acetate matrix. The results of the study show that a correlation can be established between the two released target substances, which is dependent on the solubility of the organic compound in the aqueous medium and the interaction of this compound with the silver ions. The ability of 10–undecenoic acid to interact with the silver ion, both through the carboxyl and alkene groups, contributes to the increase in the content of the silver ions transported in the aqueous medium.
Formation of a Fully Anionic Supported Lipid Bilayer to Model Bacterial Inner Membrane for QCM-D Studies
Authors: Swana Kathleen W. , Camesano Terri A. , Nagarajan Ramanathan
Published: May 2022

Supported lipid bilayers (SLBs) on quartz crystals are employed as versatile model systems for studying cell membrane behavior with the use of the highly sensitive technique of quartz crystal microbalance with dissipation monitoring (QCM-D). Since the lipids constituting cell membranes vary from predominantly zwitterionic lipids in mammalian cells to predominantly anionic lipids in the inner membrane of Gram-positive bacteria, the ability to create SLBs of different lipid compositions is essential for representing different cell membranes. While methods to generate stable zwitterionic SLBs and zwitterionic-dominant mixed zwitterionic–anionic SLBs on quartz crystals have been well established, there are no reports of being able to form predominantly or fully anionic SLBs. We describe here a method for forming entirely anionic SLBs by treating the quartz crystal with cationic (3-aminopropyl) trimethoxysilane (APTMS). The formation of the anionic SLB was tracked using QCM-D by monitoring the adsorption of anionic lipid vesicles to a quartz surface and subsequent bilayer formation. Anionic egg L-α-phosphatidylglycerol (PG) vesicles adsorbed on the surface-treated quartz crystal, but did not undergo the vesicle-to-bilayer transition to create an SLB. However, when PG was mixed with 10–40 mole% 1-palmitoyl-2-hydroxy-sn-glycero-3-phospho-(1′-rac-glycerol) (LPG), the mixed vesicles led to the formation of stable SLBs. The dynamics of SLB formation monitored by QCM-D showed that while SLB formation by zwitterionic lipids followed a two-step process of vesicle adsorption followed by the breakdown of the adsorbed vesicles (which in turn is a result of multiple events) to create the SLB, the PG/LPG mixed vesicles ruptured immediately on contacting the quartz surface resulting in a one-step process of SLB formation. The QCM-D data also enabled the quantitative characterization of the SLB by allowing estimation of the lipid surface density as well as the thickness of the hydrophobic region of the SLB. These fully anionic SLBs are valuable model systems to conduct QCM-D studies of the interactions of extraneous substances such as antimicrobial peptides and nanoparticles with Gram-positive bacterial membranes.
Influence of ICCGHAZ on the Low-Temperature Toughness in HAZ of Heavy-Wall X80 Pipeline Steel
Authors: Fu Chao , Li Xueda , Li Haichuan , Han Tao , Han Bin , Wang Yong
Published: May 2022

Low-temperature embrittlement in the heat-affected zone (HAZ) of heavy-wall X80 weld joints is a primary challenge for arctic oil & gas exploitation. In this paper, the influence of intercritically reheated coarse-grained HAZ (ICCGHAZ) on the low-temperature toughness of the weld joint in a 22 mm thick X80 spiral submerged arc welded pipe was studied through instrumented Charpy V-notch impact test at −80~20 °C and corresponding fracture surface characterization. The results indicated that the influence of ICCGHAZ on the overall toughness of the weld joint is related to temperature. At temperatures below −45 °C, individual and tiny martensite-austenite (MA) constituent debonding can trigger cleavage fracture–which was proved to be nucleation-controlled–and the probability of embrittlement of the ICCGHAZ increases. At temperatures higher than −45 °C, only relatively large or closely distributed MA constituent in ICCGHAZ satisfies the conditions to trigger propagation-controlled cleavage fractures, and the influence of ICCGHAZ on the overall toughness is not remarkable.
Comparison of the Three-Phase Corrosion Behavior of SiN and 304L Stainless Steels in 6 M Nitric Acid Solution at Different Temperatures
Authors: Sun Shengxuan , Zhang Lianmin , Ma Aili , Daniel Enobong Felix , Zhang Chunzhi , Zheng Yugui
Published: May 2022

In this work, the three-phase corrosion behavior of SiN and 304L stainless steels was comparatively investigated in a 6 M nitric acid solution at different temperatures. It was found that the corrosion rates of both steels in the liquid phase, vapor phase and condensate phase of nitric acid showed an increasing trend with rising temperature. Meanwhile, there also existed some differences in the corrosion kinetics and the corrosion resistance in the different phases of nitric acid. The corrosion rate of SiN and 304L stainless steels in the liquid phase of nitric acid had a cubic function relationship with temperature, and SiN stainless steel presented better corrosion resistance without intergranular corrosion (IGC) compared with 304L stainless steel with IGC at 100 °C and 120 °C. By contrast, the SiN stainless steel displayed a lower corrosion resistance than 304L stainless steel in the vapor phase of nitric acid at the same temperature, and the corrosion rates of SiN and 304L stainless steels showed a quadratic function relationship with temperature, indicating a milder corrosion in the vapor phase in comparison with that in the liquid phase of nitric acid. In the condensate phase of nitric acid, there was a similar corrosion behavior of the two steels to that in the nitric acid vapor phase, and 304L stainless steel also demonstrated a better corrosion resistance than SiN stainless steel at the same temperature. The differences in corrosion behavior between the two steels could be attributed to the changed media environment and the different alloy composition, and the two aspects were discussed in detail based on relevant experimental results. This work can provide an important insight into the material selection for reprocessing equipment and the development of new corrosion-resistant materials used in spent fuel reprocessing.
Identification and Quantification of Flavonoids in Okra (Abelmoschus esculentus L. Moench) and Antiproliferative Activity In Vitro of Four Main Components Identified
Authors: Yang Jing , Chen Xiaoqi , Rao Shuaiqi , Li Yaochen , Zang Yunxiang , Zhu Biao
Published: May 2022

Okra is a kind of flavonoid-rich food which was reported to have a variety of health functions. Flavonoids are the major polyphenolic compounds in okra and are thought to play a role in reducing the risk of disease. The aim of this study was to isolate and identify the flavonoids composition in okra pods and explore the activity of the main flavonoids components identified on inhibiting tumor cell proliferation in vitro. Six individual flavonoids were identified by HPLC-MS/MS: quercetin-3-gentiobioside (Q3G), quercetin-3-sambubioside (Q3S), rutin, quercetin-7-glucoside (Q7G), isoquercitrin (ISO) and quercetin-3-malonylglucoside (Q3M), which were all separated well within 30 min. The analytical method was validated by the recovery of spiked samples and so on. Moreover, four main flavonoids components, namely Q3G, Q3S, ISO and Q3M, exhibited significant (p < 0.05) inhibition of NCI-N87, A375, A549 cells proliferation (25−100 μmol/L) and of HFLS-RA (200−300 μmol/L) in different levels, according to MTT method, respectively. It is demonstrated that the flavonoids components of okra exhibited a noteworthy development prospect as a possible nutraceutical dietary supplement.
Computational Metabolomics Tools Reveal Metabolic Reconfigurations Underlying the Effects of Biostimulant Seaweed Extracts on Maize Plants under Drought Stress Conditions
Authors: Tinte Morena M. , Masike Keabetswe , Steenkamp Paul A. , Huyser Johan , van der Hooft Justin J. J. , Tugizimana Fidele
Published: May 2022

Drought is one of the major abiotic stresses causing severe damage and losses in economically important crops worldwide. Drought decreases the plant water status, leading to a disruptive metabolic reprogramming that negatively affects plant growth and yield. Seaweed extract-based biostimulants show potential as a sustainable strategy for improved crop health and stress resilience. However, cellular, biochemical, and molecular mechanisms governing the agronomically observed benefits of the seaweed extracts on plants are still poorly understood. In this study, a liquid chromatography–mass spectrometry-based untargeted metabolomics approach combined with computational metabolomics strategies was applied to unravel the molecular ‘stamps’ that define the effects of seaweed extracts on greenhouse-grown maize (Zea mays) under drought conditions. We applied mass spectral networking, substructure discovery, chemometrics, and metabolic pathway analyses to mine and interpret the generated mass spectral data. The results showed that the application of seaweed extracts induced alterations in the different pathways of primary and secondary metabolism, such as phenylpropanoid, flavonoid biosynthesis, fatty acid metabolism, and amino acids pathways. These metabolic changes involved increasing levels of phenylalanine, tryptophan, coumaroylquinic acid, and linolenic acid metabolites. These metabolic alterations are known to define some of the various biochemical and physiological events that lead to enhanced drought resistance traits. The latter include root growth, alleviation of oxidative stress, improved water, and nutrient uptake. Moreover, this study demonstrates the use of molecular networking in annotating maize metabolome. Furthermore, the results reveal that seaweed extract-based biostimulants induced a remodeling of maize metabolism, subsequently readjusting the plant towards stress alleviation, for example, by increasing the plant height and diameter through foliar application. Such insights add to ongoing efforts in elucidating the modes of action of biostimulants, such as seaweed extracts. Altogether, our study contributes to the fundamental scientific knowledge that is necessary for the development of a biostimulants industry aiming for a sustainable food security.
Nutritional Interactions between Bacterial Species Colonising the Human Nasal Cavity: Current Knowledge and Future Prospects
Authors: Adolf Lea A. , Heilbronner Simon
Published: May 2022

The human nasal microbiome can be a reservoir for several pathogens, including Staphylococcus aureus. However, certain harmless nasal commensals can interfere with pathogen colonisation, an ability that could be exploited to prevent infection. Although attractive as a prophylactic strategy, manipulation of nasal microbiomes to prevent pathogen colonisation requires a better understanding of the molecular mechanisms of interaction that occur between nasal commensals as well as between commensals and pathogens. Our knowledge concerning the mechanisms of pathogen exclusion and how stable community structures are established is patchy and incomplete. Nutrients are scarce in nasal cavities, which makes competitive or mutualistic traits in nutrient acquisition very likely. In this review, we focus on nutritional interactions that have been shown to or might occur between nasal microbiome members. We summarise concepts of nutrient release from complex host molecules and host cells as well as of intracommunity exchange of energy-rich fermentation products and siderophores. Finally, we discuss the potential of genome-based metabolic models to predict complex nutritional interactions between members of the nasal microbiome.
A Review of the Monograph by T. Pimonenko, O. Lyulyov, N. Letunovska “Circular and Carbon-Free Economy: The Roadmap for Harmonizing National and European Standards for Energy Market"
Authors: Tambovceva Tatjana
Published: May 2022

The monograph examines the essence of a circular and carbon-neutral economy and the mechanisms of their implementation to accelerate the development of the European society according to these approaches. The authors analysed the energy market of Ukraine and calculated the degree of convergence of national energy policy and the European climate strategy. The experience of the European Union member states in compliance with the standards of energy market regulation and the implementation of transformational changes in this area is studied. There have been examined the bottlenecks and attractors, which determine the dynamics of an increase or decrease of the country's energy efficiency in the forecast periods. The complex material will help to make rational management decisions in the field of energy production and energy saving. The works of the authors can be used in developing a roadmap for harmonization of Ukrainian and European standards of energy market regulation.
Efeitos da maconha não medicinal no neurodesenvolvimento de adolescentes/jovens
Authors: Fernandes Roberth Geraldo Braga Martins , Souza Rafael Cota Andrade Ferreira de , Martins Katharine Gonçalves , Oliveira Carlos Miguel , Meneses Diego Lessa , Vilela Luciano Rezende Vilela
Published: May 2022

Objetivo. A maconha apresentou estimativa de 13 milhões de casos de dependência em 2010, sendo este quadro fortemente associado ao uso abusivo dessa planta. Diante disso, este estudo busca avaliar os impactos do uso e abuso de maconha em adolescentes e adultos jovens do ponto de vista neuropsiquiátrico, da mortalidade e da afecção de outros sistemas orgânicos. Método. É uma revisão sistemática, baseada no método PRISMA. A seleção da população baseou-se em artigos que abordaram pessoas com faixa etária correspondente à adolescência, jovem e/ou adulta jovem, segundo a definição de adolescência prescrita pela Organização Mundial da Saúde (OMS) e segundo o Estatuto da Juventude Brasileiro em uso de maconha não medicinal. Sem restrição de sexo, raça, cor ou nível socioeconômico. Resultados. O uso de maconha não medicinal, caracterizado por seu consumo pelo fumo ou vaporização, apresentou uma série de alterações desde neurais a fisiológicas gerais. Foi observado amplo efeito do uso da Cannabis sativa com aparente efeito dose dependente no campo da afecção dos domínios neurocognitivos, aprendizado verbal, memória e atenção, função psicomotora, impulsividade cognitiva e flexibilidade cognitiva. Apesar do efeito ser aparentemente atribuído à maior dosagem de consumo, o uso em pequenas doses também foi associado a efeitos deletérios em alguns pacientes com transtorno psicótico subjacente. Conclusão. uso não medicinal da Cannabis sativa apresenta relação significativa com distúrbios neuropsiquiátricos nas esferas da função motora e perceptual, função executiva, cognição social e aprendizado e memória, transtornos de humor e psicóticos, transtornos da função executiva (inibição social) e distúrbios cardiovasculares.
Síndrome mioclonia-ataxia secundária à COVID-19: uma rara complicação neurológica
Authors: Bianchi da Silva Rocha Emanuelle , Eberhardt Camila Moraes , Bastos Ricardo Funes
Published: May 2022

Trata-se de um caso de síndrome mioclonia-ataxia secundária a COVID-19, uma manifestação rara de uma doença pandêmica. Relato de caso. Mulher, 45 anos, hígida, diagnosticada com COVID-19. Após 9 dias dos sintomas respiratórios, desenvolveu mioclonias, ataxia de marcha e disdiadococinesia. Investigação evidenciou somente leve acometimento pulmonar pelo coronavírus-19. Nega uso de fármacos neurotóxicos, hipóxia ou distúrbios metabólicos. Tratada com clobazam e acído valproico com resolução do quadro em 30 dias. Conclusão. Manifestações neurológicas secundárias a COVID-19 são relativamente frequentes, porém, existem poucos relatos de distúrbios de movimento. É essencial que profissionais de saúde adquiram conhecimento acerca dessa manifestação clínica incomum.
Co-creation of experiences at dark tourism festivals
Authors: Golz Luisa
Published: May 2022

This work-in-progress paper presents a novel area of thanatourism research, dark tourism festivals. These alternative festivals are located at the lighter end of the thanatourism spectrum, focusing on fun, culture and entertainment. This paper focuses in particular on the co-creation of festival experience at dark tourism festivals. Preliminary findings are presented, predominantly based on data gathered at the Whitby Goth Weekend, which will later be supplemented by research at other dark tourism festivals. Preliminary findings indicate that aspects such as emotional involvement, authenticity, performance and embodiment are important elements during the co-creation process. Embodied performances during which participants engage in creative practices, such as dressing up in elaborate costumes whilst having their photographs taken, enable them to escape from the routines of their day-to-day lives. Initial findings also indicate links between the festival experience and the concept of liminality. Also, participants engage in meaningful social bonds and essentially take ownership of the festival experience. Whilst engaging in these activities, participants become part of the co-creation of a performance. Festival spaces are specifically managed to enable co-creation, whereby festival participants form part of a sharing economy and actively co-create the festival experience together with the organisers, who enable this process by providing a safe and inclusive festival space.
User's Profile of Thermal Establishments: A Literature Review
Authors: Ferreira Fernanda , Rodrigues Cristina , Costa Vânia , Alves Maria José , Fernandes Paula Odete , Vaz Márcia , Nunes Alcina
Published: May 2022

Contemporary society has an increasingly broad and holistic perspective on health and wellness. It is scientifically proven that thermalism perfectly combines these two aspects. It provides a better quality of life and a complete state of well-being, physically and psychologically. Several studies have been carried out over the years, reflecting a paradigm shift in the conception of thermalism establishments. For this reason, the sector's stakeholders need to be prepared and have the necessary knowledge to respond to the different needs, characteristics, and motivations of both usual and new thermal users to define better action strategies. In this context, the research's main objective is to present a literature review and content analysis on the thermalism topic, through the most recognised databases, exploring the offer, identifying its users’ profiles and pointing out some trends for the market. As a result of the analyses, the growing interest and relevance of thermalism in scientific production stand out, particularly in tourism, as a social science. There are several studies that present a direct link between thermalism and tourism activity. It is notorious that thermal activity has both a recreational and medicinal dimension, all over the world. Literature analysis has also revealed the power of thermal waters for the treatment of a wide range of diseases and health issues, related to different medical specialities. Although the more traditional thermalism is still very present, the most recent studies portray some gradual changes on the demand and supply side, with a constant adjustment of both. Particularly in the user profile, there is evidence of a rejuvenated, healthier and heterogeneous demand, with different motivations to frequent the thermal spas. On the supply side, it can be seen that these establishments are seeking to reinvent themselves in order to complement their basic offer related to medical dimension, also focusing on the leisure, to enrich the experience of their regular users and attract others. Regarding the expected trends, they are mainly related to 1) Increased demand for prevention, leisure and well-being dimension; 2) Changes in the user profile; and 3) High potential for tourism activity.
‘Different Strokes for Different Folks’: Segmenting Drag Cabaret Audiences in South Africa
Authors: Hattingh Chris , Niekerk Ashley
Published: May 2022

In a competitive post-modern society, traditional theatre genres (e.g. satire, dance, drama, ballet, opera, classical music concerts and West End/Broadway hits) battle to attract audiences. This is especially the case considering the myriad of more popular entertainment- and leisure activities these offerings compete with. One such activity appears to be that of drag cabarets; which only became an accepted part of mainstream arts and culture during the last decade. Considering the nascent nature of drag cabarets, it is probable that its appeal among audiences has been empirically overlooked by researchers. To investigate the appeal of this increasingly popular leisure activity, a web-based electronic survey was completed by 670 drag cabaret audience members in three South African cities, namely Cape Town, Johannesburg and Pretoria. This study aimed to plug the gap in existing literature through sharing insights on the dynamics of human and social behaviour in a post-modern society through determining the motives of attending drag cabarets. Moreover, drag cabaret audience members were segmented through ‘benefit segmentation’ by applying a hierarchical cluster-analysis using Ward’s procedure with Euclidean distances. The findings revealed four distinct audience clusters, namely the avid drag fan, the comedy enthusiast, the brotherhood tribe and the sisterhood tribe. The identified audience clusters differed partially on some demographical- and consumption behavioural variables, but mostly on motivational factors. Moreover, this study found that drag cabaret audience members should not be regarded as homogeneous. To sustain interest in this developing leisure activity, recommendations were made on how to attract the right audience members, with the right message to ensure that products and services are specifically designed for and/or promoted to these audience members while meeting their particular needs.
Pivoting Online: The Case of the Agri-food Sector
Authors: Rogers Ciana
Published: May 2022

The debate concerning e-Commerce adoption is an evolving one that in the context of the current COVID-19 Pandemic has come centre stage.  Although the shift towards e-Commerce platforms has been an increasing trend in recent years, Curtin (2020) states the current pandemic has accelerated consumers’ shifts toward e-Commerce by five years.

 As store closures and new enforcements became a reality, it forced many companies to pivot their online strategies overnight (Shadler et al, 2020). Since its inception in the late 90’s, e-Commerce adoption and research has championed the rise and the significant benefits of e-Commerce. Industries as diverse as financial, retail, manufacturing, and hospitality (Josanov, 2011; Kremez et al, 2019; Helper and MacDuffie, 2000; Hua, 2016) have embraced e-Commerce. By contrast, research into the use and level of adoption by Agri-food businesses indicates that this sector has not kept pace with this digital revolution. This is surprising given the importance of this sector worldwide. Indeed, it is one of the most important indigenous industries in Ireland in terms of employment, economic output, and export performance. However, there is scarce research found in the case for Irish Agri-food e-Commerce development, with limited industry reports available. Previous research elsewhere called for government support to encourage the move to online territory (Sparkes and Thomas, 2001; Sturiale and Scuderi, 2016), and the onset of COVID-19 furthered this. Numerous support agencies expanded on their current offerings in relation to digital support, although little is known around Agri-food businesses adoption of these.               

 For this reason, this paper intends to add to the limited studies surrounding this important indigenous industry in Ireland within the widely dynamic topic of e-Commerce platforms. The focus of this paper is directed toward the adoption and integration of these online platforms during COVID-19, the benefits and challenges faced, the role of support agencies and further support suggested by SMEs through survey data. This study has both an academic and industry focus and hence aims to improve our understanding of online activity and digital support within this sector.
Implications of the New Balearic Islands Circularity Law for Tourism Practice and Research
Authors: Moon Dr Christopher J
Published: May 2022

In February 2022 the Balearic Islands government approved a new law to introduce Circular Economy (CE) principles into the Tourism Industry (Decree Law 3/2022, of Urgent Measures for the Sustainability and Circularity of Tourism in the Balearic Islands, Mallorca Daily Bulletin, 2022a) including fines for non-compliance. As a result, the Balearic Islands could be considered as the world’s first circular tourist destination. This paper thus explores the preparedness of the Tourism Industry in the Balearics to implement the circular principles, with planned interviews of a sample of tourism businesses. The paper includes a review of the new CE principles and discusses the implications of them for the tourism industry and potential impact on tourism from a Triple-Bottom-Line perspective i.e. impact on social, environmental and economic criteria.
Karakteristik COVID-19 Pada Anak
Authors: Hakim Alfi
Published: May 2022

Pendahuluan; COVID-19 adalah permasalahan baru dunia Kesehatan di seluruh negara yang masih belum teratasi secara total hingga saat ini. COVID-19 dapat menginfeksi siapapun termasuk anak. Tujuan; Mengkaji terkait angka kejadian, penularan, gejala, pengobatan, pemeriksaan, klasifikasi dan tatalaksana COVID-19 pada anak.
Metode; Membahas publikasi 26 artikel penelitian mengenai COVID-19 pada anak dari berbagai sumber seperti NCBI, Schoolar sejak 2020-2022 dan menyajikannya dalam bentuk artikel yang relevan.
Hasil; Kejadian COVID-19 pada anak memiliki angka yang lebih rendah, manifestasi klinik yang cenderung ringan dan tanpa gejala disbanding orang dewasa. Penularan pada anak utamanya dari keluarga. Klasifikasi COVID-19 pada anak cenderung sama dengan orang dewasa. Hingga kini pengobatan COVID-19 belum ditemukan dan hanya diberikan terapi suportif.
Kesimpulan; Angka kejadian dan gejala klinis lebih ringan dibandingkan orang dewasa serta pada anak memiliki prognosis yang baik
ASI Eksklusif Sebagai Faktor Protektif Terhadap Kejadian Stunting Pada Balita 24-59 Bulan
Authors: Putra Pratama Rafika Surya , Dasuki Mohammad Shoim , Agustina Tri , Soekiswati Siti
Published: May 2022

Pendahuluan: Stunting merupakan suatu permasalahan gizi yang sampai waktu ini tengah menjadi atensi dan persoalan yang belum mampu teratasi. Asupan ASI eksklusif diprediksi mampu meminimalkan risiko stunting karena dalam ASI eksklusif terkandung komponen imun antibodi dan kalsium serta nutrisi yang dibutuhkan oleh bayi.
Tujuan: Menganalisis pengaruh pemberian ASI eksklusif terhadap kejadian stunting pada anak usia 24-59 bulan.
Metode: Literatur review dengan menggunakan PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) untuk ekstraksi data. Database yang digunakan meliputi Google Scholar, Science direct, Pubmed. Dan Sage Journals dengan menggunakan kata kunci (“Exclusive Breastfeeding” OR Breastfeeding OR “Breast fed”) AND (Stunting OR “Growth Disorder” OR “Stunted Growth”) AND Toddler.
Hasil: Eksktraksi diperoleh 16 artikel yang dianalisis.
Kesimpulan: Pemberian ASI eksklusif pada balita 24-59 bulan dapat menjadi faktor protektif terhadap stunting sedangkan pemberian ASI non eksklusif dapat menjadi faktor risiko balita mengalami stunting.
3.4 GHz strip-type thickness shear mode solidly-mounted bulk acoustic wave resonator using X-cut LiTaO3
Authors: Kadota Michio , Ishii Yoshimi , Tanaka Shuji
Published: May 2022

This paper describes a high-frequency bulk acoustic wave resonator (BAWR) with a solidly-mounted (SM) structure using single crystal LiTaO3 (LT) thin plates. A Bragg reflector solidly supports the LT thin plate, which is fragile if self-suspended. The two kinds of BAWRs use a strip-type thickness shear mode in 0.56 μm thick X37°Y LT and X127°Y LT. The Bragg reflector is made of 5 pairs of Al and Ta films, i.e. 10 layers in total. The X37°Y LT SM structure BAWRs exhibited a resonance frequency (f
r) of 3.250 GHz, an anti-resonance frequency (f
a) of 3.463 GHz, a bandwidth (BW) of 6.6%, and an impedance (Z) ratio of 48 dB. The X127°Y LT BAWR has a similar characteristic with f
r of 3.153 GHz, f
a of 3.367 GHz, a BW of 6.8%, and a Z ratio of 46 dB. The X37°Y LT BAWR showed an advantage of 2 dB compared with the X127°Y LT one. The Al film acts as a low acoustic impedance film, but an acoustic impedance layer combination of Al and Ta films is not suitable and that of SiO2 and W films suitable among the four combinations, Al/Ta. SiO2/Ta, Al/W, and SiO2/W films. Although the acoustic impedance layer combination, the acoustic film quality, the structure, electrode design, and fabrication process of the fabricated BAWRs were not optimized yet, this result suggests the high potential of this device.
PERSEPSI PARA HAKIM PENGADILAN AGAMA KABUPATEN MALANG TERHADAP KEDUDUKAN HUKUM ANAK DI LUAR NIKAH
Authors: Syarofi Ahmad Muhtar , Bahrul Ulum
Published: May 2022

Status of children out of wedlock in Indonesia, which is currently associated with many (having a civil relationship) other than with mother but also with her father. Problems in this article, namely: Constitutional Court Decision Number 46 / PUU / VII / 2010 and, how the rights and obligations of children outside of Marriage before and after the Decision of the Constitutional Court Number 46 / PUU-VIII / 2010. Because in the Malang District Religious Court there are many civil cases as described in the Case statistics. The method of approach used in this study is the research of qualitative description and legal sociology (legal research, rechtsonderzoek) and libre researce. Qualitatively analyzed, namely from primary data from interviews and secondary theories. The results of the study show that the perceptions of the judges of Malang Regency religious court in the case of children out of wedlock can get their rights by considering aspects of justice and the child's needs.
A Study on PWM Rectifier for Battery Charging Applications – A Review
Authors:   Ph.D. Research Scholar, Department of Electrical and Electronics, UVCE, Banglore University, Banglore (Karnataka), India., G. Shwetha , K P. Guruswamy ,   Associate Professor, Department of Electrical and Electronics, UVCE, Banglore University, Banglore (Karnataka), India.
Published: May 2022

Electric Vehicles (EV) are becoming more popular in present scenario because it can be easily charged using charger. Thus, the chargers play a vital role in EV vehicle. Hence, many distinct types of EV charging technologies have been developed so far. This paper reviewes an effective and quick charging approach which extends the life cycle of a battery with high charging efficiency. This article also presents about characteristics of charger in terms of converter topologies, modulation schemes and control algorithms.
Identifying Centrifugal Pump Effectiveness Through Utilizing OEE Measures as a Basis Towards Optimum Process Stability
Authors:   Department of Mechanical Engineering, Glasgow Caledonian University, Glasgow, UK., Al-Toubi Soud , Alkali Prof. Babakalli ,   Department of Mechanical Engineering, Glasgow Caledonian University, Glasgow, UK., Harrison Prof. David ,   Department of Mechanical Engineering, Glasgow Caledonian University, Glasgow, UK., C.V. Prof. Sudhir ,   Department of Mechanical & Industrial Engineering, National University of Science and Technology, Muscat, Sultanate of Oman.
Published: May 2022

The present global competitive within the petroleum industry obliges companies to improve production performance continually. In this paper, Overall Equipment Effectiveness (OEE) used as improvement driver tools that measure various types of production losses and indicate the area of process improvement. The study approach attempts to measure the effectiveness of the centrifugal oil pump during one year of operating based on the historical data acquired. Then used this gained data of the OEE metrics in order to predict the pump effectiveness over the three years. Monte Carlo simulation method used to prognosis the machine behavior patterns in the future and estimating the effectiveness of the pump system. Also, it supports management for clear understanding to draw their maintenance strategy in advance and identifies the opportunities to reduce wastages of time and resources. Further, the results show how individual OEE factors influence the overall productivity and efficiency of the oil pump. This identification will contribute not just to improve the maintenance plan but also will protect the equipment from early deterioration and achieve process stability. OEE is a globally recognized best practice measure to systematically improve processes for higher efficiencies and better productivity, ultimately leading to lower manufacturing costs and higher profitability.
Igiene può avere il plurale?
Authors: Thornton Anna M.
Published: May 2022

Diversi igienisti e igieniste dentali ci chiedono se sia possibile usare la forma plurale igieni, anche su documenti fiscali, per indicare un numero superiore a uno di prestazioni di igiene dentale. Giustamente, l’uso del plurale igieni desta in loro qualche perplessità.
Integrasi Failure Tracking Matrix (FTM) dan Failure Modes and Effects Analysis (FMEA) untuk Perbaikan Sistem Perawatan Mesin Pulverizer
Authors: Wahid Abdurrahman , Suhandini Tjahjaningsih Yustina , Mustakim
Published: May 2022

Tujuan  dari penelitian ini adalah untuk menentukan prioritas penjadwalan perawatan mesin guna meminimalisir corrective maintenance dengan mengintegrasikan 2 metode Failure Tracking Matrik (FTM) dan Failure Modes And Effects Analysis (FMEA). Perawatan (maintenance) adalah adalah kegiatan pendukung utama yang bertujuan untuk menjamin kelangsungan fungsional suatu sistem produksi (peralatan) sehingga pada saat dibutuhkan dapat dipakai sesuai dengan kondisi yang diharapkan. Hal ini dapat dicapai antara lain dengan melakukan perencanaan dan penjadwalan tindakan perawatan dengan tetap memperhatikan fungsi pendukungnya dandengan memperhatikan fungsi pendukungnya dan dengan memperhatikan kriteria minimal ongkos untuk mengantisipasi tingkat kerusakan dan mencegah terputusnya kegiatan produksi. Penelitian ini dilaksanakan di PT. PJB UBJ O&M Unit 9 Paiton, Probolinggo. Dalam menentukan strategi perawatan mesin diperlukan informasi tentang penyebab kegagalan (failure) proses yang bersumber dari mesin produksi. Terdapat beberapa cara perawatan mesin guna membantu dalam meminimalisir kerusakan dengan mengintegrasikan 2 metode antara lain yaitu Failure Tracking Matrix (FTM) bersumber dari ide Wang & Ling. FTM merupakan alat quality control yang mampu beradaptasi untuk menyesuaikan perubahan yang sering terjadi dalam proses produksi. Pada penelitian ini dihasilkan desain sistem pemeliharaan terintegrasi  untuk mendeteksi kegagalan proses sehingga respon perbaikan mesin dilakukan dengan cepat dan terpantau. Dari hasil analisis didapatkan proporsi failure terbesar mesin purverizer  adalah pada mesin bearing lube oil pump rusak, oil filter kotor, dan hot air damper macet. Pada analisis FTM pada mesin pulverizer didapatkan 19 failure mode (FM) dan 19 fuctional failure component (FC). Analisis FMEA memberikan 10 prioritas perbaikan dari RPN yang terbesar pada mode kerusakan cold air damper macet  dan yang terendah adalah pada bearing grinding roller rusak. Integrasi FTM dan FMEA terbukti dapat diterapkan untuk mendeteksi kegagalan proses yang berlangsung selama produksi berjalan.
APLIKASI KLASIFIKASI SENTIMEN PADA ULASAN SMARTPHONE DI SITUS JUAL BELI ONLINE BERBASIS WEB MENGGUNAKAN NAIVE BAYES DENGAN TF-IDF
Authors: Karisma Risky , Lestanti Sri , Chulkamdi M.Taofik
Published: May 2022

Consumer satisfaction can be seen through the product review column and everyone is free to see it, but the problem that occurs is that limited human resources make business owners and prospective smartphone product buyers unable to read all the reviews in a short time. For that we need a method that can assess these reviews automatically. The solution to overcome the limitations in assessing review data is to use machine learning because it produces analysis with a statistical basis with a fairly reliable algorithm with high accuracy that can be used to classify sentiment analysis on smartphone product reviews called Naive Bayes. Web-based classification applications using Naïve Bayes can be made through 5 stages of SDLC written into source code using the web programming language on the Laravel Framework. Before doing the classification, each word in the review data was first given a weight using TF-IDF and all words were successfully weighted and then stored in the database. The results of testing the accuracy of the application achieve very good results, namely 93% and the results of precision and recall which reach numbers above 85% indicate that the Naive Bayes algorithm is functioning well in the application.
ANALISIS PERBANDINGAN PENGGUNAAN ALGORITMA SEQUENTIAL SEARCH DAN BINARY SEARCH PADA APLIKASI SURAT PERJALANAN DINAS
Authors: Markuci Dian , Prianto Cahyo
Published: May 2022

Algoritma pencarian merupakan proses menemukan data atau informasi tertentu dalam sekumpulan data menggunakan kata kunci atau keyword. Terdapat bermacam-macam algoritma pencarian dan setiap algoritma memiliki kelebihan dan kekurangannya masing-masing, Pada penelitian kali ini penulis akan meneliti dua algoritma pencarian yaitu sequential search dan binary search. Pada studi kasus ini dua algoritma tersebut akan diterapkan untuk pencarian data pegawai di aplikasi surat perjalanan dinas. kemudian akan dianalisis kecepatan rata-rata waktu pencarian masing-masing algoritma. Selanjutnya akan dilakukan perbandingan dua algoritma tersebut dalam melakukan proses pencarian. Setelah melakukan analisis, kecepatan rata-rata pencarian sequential search untuk data yang terletak di awal , tengah dan akhir  yang di peroleh  yaitu 0.001750 s, 0.002227 s, 0.002387. Sedangkan kecepatan pencarian binary search untuk data yang terletak di awal , tengah dan akhir  yang di peroleh  yaitu 0.001827 s, 0.001747 s, 0.001750 s. Dapat disimpulkan algoritma sequential search dapat mencari data dengan cepat apabila data yang dicari terletak di awal, Namun apabila data yang dicari terletak di akhir maka pencarian akan semakin lama.  Sedangkan kecepatan binary search cenderung lebih stabil dan cepat untuk pencarian data sehingga akan lebih cocok untuk diterapkan pada aplikasi surat perjalanan dinas atau pencarian data pada aplikasi dengan jumlah data yang banyak atau besar.
OTOMATISASI POMPA AIR MENGGUNAKAN NODEMCU ESP8266 BERBASIS INTERNEToOF THINGS (IOT)
Authors: Moch. Bakhrul Ulum  , Moch. Lutfi  , Arif Faizin
Published: May 2022

Air merupakan sumber daya alam yang sangat diperlukan bagi kelangsungan kehidupan untuk semua makhluk yang ada di bumi. Untuk pemanfaatan air yang maksimal dibutuhkan alat bantu salah satunya yaitu pompa air. Pengoprasian pompa air biasanya dilakukan dengan manual yang mana membutuhkan sistem kontrol yang efisien. Perkembangan konektifitas internet adalah sebuah konsep dari  Sistem  IoT (Internet of Things) yang akan di gunakan untuk membantu kemudahan untuk kehidupan sehari-hari.. Untuk itu peneliti akan memanfaatkan sistem ini untuk dipadukan dengan pompa air.  Dalam penelitian ini dimaksudkan untuk mengkoneksikan NodeMCU ESP8266 dengan pompa air agar pompa air bisa berjalan secara otomatis. Koneksi internet (WiFi) digunakan untuk menghubungkan antara NodeMCU dengan pompa dan dapat di monitoring dan dinyalakan secara manual dengan smartphone. Dari hasil pengujian alat ini pompa air bisa berjalan secara otomatis dengan baik, dan dapat dimonitoring serta manual control dari smartphone dengan baik, serta dari hasil uji level ketinggian air memiliki rata-rata kesalahan relatif sebesar 14,78% atau ± 0,5 cm pada setiap level.
SISTEM PENDUKUNG KEPUTUSAN DENGAN METODE SIMPLE ADDITIVE WEIGHTING (SAW) DALAM MEMILIH SAHAM BADAN USAHA MILIK NEGARA (BUMN) BERBASIS WEB
Authors: Putra Ade , Achmadi Sentot , Mahmudi Ali
Published: May 2022

Investasi ialah sebuah langkah usaha untuk menanamkan modal untuk memperoleh sebuah keuntungan. Masa sekarang ini, dunia investasi bukan lagi didominasi oleh jenis investasi konvensional seperti deposito, tabungan atau emas. saat ini investor mulai tertarik untuk menanamkan modalnya melalui kepemilikan suatu perusahaan yang ditandai dengan surat berharga yang disebut saham. salah satu investasi yang memiliki daya tarik yang besar dalam saham adalah membeli saham perusahaan Badan Usaha Milik Negara (BUMN) yang dimiliki oleh pemerintah karena produk dari perusahaan Badan Usaha Milik Negara (BUMN) banyak dibutuhkan oleh masyarakat seperti perbankkan, telekomunikasi, infratruktur dll. Sistem Pendukung Keputusan (SPK) ialah sistem yang bisa membantu seseorang pada mengambil subuah keputusan dari beragam jenis pilihan secara akurat dan sesuai yang diinginkan, Suatu keputusan saat situasi yang semiterstruktur serta tak terstruktur bisa mengunakan SPK buat memilih suatu keputusan. metode Simple Additive Weighting (SAW) dipilih dikarenakan bisa memilih nilai bobot buat setiap atribut, lalu dilanjutkan menggunakan proses perangkingan yg akan menyeleksi cara lain terbaik asal sejumlah alternatif asal kriteria yang dipergunakan. Berdasarkan hasil dari perancangan dan implementasi dari aplikasi sistem pendukung keputusan dengan metode saw dalam memilih saham bumn berbasis web maka dari pengujian fungsional yang telah dilakukan Metode SAW dapat digunakan untuk menghasilkan rekomendasi keputusan dalam memilih saham Badan Usaha Milik Negara (BUMN), Sistem yang dikembangkan menghasilkan rangking alternatif saham Badan Usaha Milik Negara (BUMN) berdasarkan urutan total bobot kriteria, Hasil pengujian dari sistem pendukung keputusan dalam memilih saham Badan Usaha Milik Negara (BUMN), dalam pengujian terdapat 5 saham yang diuji yaitu saham ANTM (PT. Aneka Tambang), BBNI (Bank Negara Indonesi), BBRI (Bank Republik Indonesi), BBTN (Bank Tabungan Negara) dan BBJB (Bank Daerah Jawa Barat) hasil yang didapat dalam pengujian BBRI (Bank Republik Indonesi) berada diperingkat pertama dan dapat disimpulkan bahwa saham tersebut bagus untuk diinvestasikan  semua fitur yang terdapat dalam sistem berjalan dengan lancar.
KOMPARASI TINGKAT AKURASI INFORMATION GAIN DAN GAIN RATIO PADA METODE K-NEAREST NEIGHBOR
Authors: Fajriyan Fajriyan Nur , Ahsan Moh. , Harianto Wahyudi
Published: May 2022

Seleksi fitur merupakan salah satu metode yang digunakan untuk memperkecil atau mengurangi dimensi antar atribut sehingga menghasilkan atribut yang relevan, metode ini dianggap bisa mengurangi anomali pada atribut dalam dataset. Metode KNN  diangap metode klasifikasi yang tergolong sebagai metode dengan akurasi yang rendah, terlebih lagi apabila dibandingkan dengan metode klasifikasi lain. Penelitian Farid Naufal, 2021 akurasi metode KNN mendapatkan nilai 75,4% sedangkan metode svm mendapatkan nilai 85,7%. Solusi dari permasalahan kecilnya nilai klasifikasi tersebut menggunakan seleksi fitur, teknik ini digunakan untuk mengurangi kompleksitas dari atribut. Pada penelitian ini digunakan teknik seleksi fitur Information Gain dan pengembangannya yaitu Gain Ratio.  Teknik gain ratio dianggap lebih baik terlebih ketika dibandingkan dalam pembobotan pada data glass terlihat nilai pembobotan Gain Ratio yang lebih baik dibanding pendahulunya Information Gain.