bluuebunny/crossref_metadata_2025_split huggingface dataset:
Removal of textile dyes by modified soybean hulls
Authors: Schirmer Malena Castagnino , Bertoni Fernando Ariel , Giordano Enrique David Victor 
Published: January 2023

El agua es uno de los recursos naturales más preciado, en consecuencia, la escasez en algunas regiones sumado a la alta concentración de elementos y sustancias tóxicas provocados por el mal uso y descuido de los seres humanos amenazan en gran medida la sustancia más vital de este planeta. En el caso particular de la industria textil, los colorantes empleados (generalmente azoicos) son compuestos tóxicos y mutagénicos, además, incrementan los valores de DQO y DBO. Por lo tanto, encontrar nuevas estrategias sustentables para los tratamientos de aguas industriales textiles es de suma importancia para poder mitigar el impacto ambiental generado por los colorantes textiles.
De los diversos métodos de tratamientos existe el proceso de adsorción. Para ello, los adsorbentes utilizados generalmente son derivados del petróleo, y en el caso del carbón activado, éstos poseen un alto costo de obtención. En este contexto, el uso de bioadsorbentes renovables es de gran interés para aplicar en estos procesos. Por lo tanto, utilizando un residuo agroindustrial, tal como la cascarilla de soja modificada con adición de grupos catiónicos (CS-Cat) como bioadsorbente, es altamente atractivo y promisorio. Para evaluar la capacidad adsorbente de CS-Cat, como adsorbato se escogió un colorante textil industrial muy utilizado en las industrias de teñidos de telas, tal como Naranja Reactivo 122 (NR122). El NR122 es azoico y posee grupos aniónicos, qué tendrá gran afinidad cuando entre en contacto con la CS-Cat. Para las evaluaciones, se prepararon soluciones de NR122 (10 - 2200 ppm) para las isotermas de adsorción, y de 300, 600 y 1200 ppm de NR122 para cada ensayo en las cinéticas de adsorción.
Los resultados obtenidos a partir de las isotermas y cinéticas de adsorción mostraron una capacidad máxima de adsorción de 705.4 mg/g, y un tiempo máximo de adsorción de 1 h, respectivamente. Los modelos matemáticos que ajustaron a los datos experimentales fueron el modelo de Freundlich para las isotermas, y de pseudo-segundo orden para las cinéticas. Además, se han realizado estudios de diseños de experimentos para buscar las condiciones óptimas en los ensayos de adsorción en columna de lecho empacado utilizando diferentes variables tales como: altura, masa del adsorbente, flujo, y concentraciones de los colorantes. Los resultados experimentales obtenidos mostraron que las curvas de rupturas obtenidas por el proceso de adsorción en columna fueron representadas por el modelo modificado de la curva de dosis-respuesta, obteniéndose un porcentaje de remoción de 79%, y una capacidad máxima de adsorción de 678.1 mg/g.
Decision Consequence Analysis (DCA) of Intervention Alternatives on Landfills Wandir I and II, Volta Redonda (RJ - Brasil)
Authors: Gouvea Júnior Jose Carlos Rocha 
Published: January 2023

Decision Consequence Analysis (DCA) is the application of a formalized decision-making process that employs decision theory, probability and statistics (Brown et al, 2010). A decision problem is addressed by disaggregating uncertainties and predicting positive and negative outcomes of possible management approaches. DCA provides a structured model for mapping and evaluating possible outcomes and risks associated with decisions.
The DCA can be used as a decision support system for the management of environmental liabilities. An environmental liability may involve several aspects such as legal, physical, chemical, biological, political, financial and social. Through global analysis of these aspects, logical consequence models are generated to assist the decision maker in choosing the best management alternatives.
In this work, DCA is applied to the management of landfills Wandir I and II, in Volta Redonda (RJ). These landfills received wastes between 1995 and 1997, in an area of almost 140,000 m². After environmental studies initiated in 2000, the area was classified as contaminated and has been the subject of environmental monitoring until the present.
Contamination in soil and groundwater is due to metals and PAHs in concentrations that exceed human health risk thresholds under the hypothetical scenario of groundwater consumption by residents. Alternatives for intervention and site closure were evaluated through DCA.
Forensic Analytical Approach for Hydrocarbon Fingerprinting in Soil Vapor Samplings: Example of a Residential Neighborhood in Brazil
Authors: Gouvea Júnior Jose Carlos Rocha 
Published: January 2023

Conventional analytical methods determine the concentration of compounds used to estimate the presence of environmental contamination capable of posing risk to human and ecological receptors (Murphy and Morrison, 2007). While these target analytes help regulators and environmental professional identify and manage potentially harmful conditions, these compounds can be generated by many natural and anthropogenic (man-made) sources and conventional methods alone fail to compositionally differentiate subsurface sources of contamination in complex environments (Morrison, 2000; Wang and Fingas, 2003; Gouvêa et al, 2019; Douglas et al, 2007). This case study demonstrates the advantage of using both conventional and forensic testing methods to accurately identify the source(s) of volatile hydrocarbon contamination in soil vapor samples for the development of an accurate conceptual site model in a neighbourhood near industrial facilities in Rio de Janeiro State, Brazil. The goal of this study was to differentiate potential impacts from a local steelmaking plant from fugitive hydrocarbons associated with more generic human activity in urban settings. This case study demonstrated the advantage of constructing chemical fingerprints from conventional volatile organic compound (VOC) method TO 15 and a forensic volatile hydrocarbon method using an enhanced version of method TO 15 (PIANO). The chemical fingerprints of vapor samples collected from subsurface soil gas and sewers were analysed and compared to laboratory reference samples. These data determined that the VOCs detected in neighbourhood soil vapor samples were associated with fugitive petroleum products migrating in the sewer pipelines and not with the steelmaking wastes emplaced near the residential area. This article discusses the forensic data and chemical signatures that support these findings, and the use of environmental forensic techniques to evaluate environmental data associated with complex scenarios, involving multiple contamination sources.
Óleos essenciais no controle de pragas do cajueiro
Authors: Sobrinho Raimundo Braga , Mesquita Antonio Lindemberg Martins , Mota Maria do Socorro Cavalcante de Sousa 
Published: January 2023

A literatura sobre os óleos essenciais e espécies detentoras de compostos bioativos é por demais vasta e diversificada. Agregam-se ao tema os processos de extração, uso na agricultura, na medicina, veterinária, química fina, na indústria farmacêutica, cosmética, aromática e em outros mais diversos usos e utilidades. Neste trabalho de revisão bibliográfica adotou-se uma forma de narrativa exploratória tendo por base amostras de publicações científicas nacionais e internacionais encontradas na plataforma Scielo e Google e em outras fontes. Constatou-se a imensa diversidade do tema “óleos essenciais” mostrada pelo grande número de “papers” explorando os mais diversos segmentos de usos e aplicações. Uma revisão bibliográfica se configura como uma atividade muito ampla e diversificada. Qualquer tentativa de abordagem em determinado tema conduzirá a um mundo de informações de árdua catalogação. Há necessidade de se estruturar em temas bem específicos a fim de que se possa selecionar trabalhos direcionados para o objetivo proposto. No caso específico de “óleos essenciais de plantas” para uso como inseticidas naturais ainda é uma matéria vastíssima. Portanto, esse trabalho se propõe a fazer uma revisão bibliográfica muito focada no uso de óleos essenciais para o controle de pragas do cajueiro.
Aortic valve repair in patients with ventricular septal defect or subaortic membrane
Authors: Mohamed Abdelhakim Mekkawy Ahmed 
Published: January 2023

Background: The delay in the surgical intervention of subaortic ventricular septal defect (VSD) and subaortic membrane leads to significant damage in the aortic valve, and multiple surgical interventions may be needed. We aimed to describe the pathology of the aortic valve in patients with subaortic membrane or VSD and different surgical strategies to manage the aortic regurgitation in those patients.
Methods: The study included patients who had surgery for subaortic membrane or VSD from 2017 to 2021. We reviewed strategies and surgical techniques to deal with aortic regurgitation in patients with subaortic membrane or VSD and the short and midterm outcomes.
Results: Twelve cases were included in the study; 5 cases had subaortic membrane, and 7 cases had subaortic VSD. The age ranged from 1.5 to 10 years old. Postoperative follow-up ranged from 1 to 3.5 years. We performed sub-commissural stitches and peeling of the leaflets to correct residual regurgitation. Four patients with subaortic membrane achieved satisfactory outcomes, and one patient had severe aortic regurgitation. Two patients with VSD had progression of the aortic regurgitation. Patients with failed repair had severe prolapse and thickening of the valve.
Conclusion: Severe prolapse and dense thickening of the valve were difficult pathologies to repair. The sub-commissural stitches could be mandatory to achieve good midterm results. Complete freeing and peeling of the leaflets till restoring the natural appearance is crucial.
Intensive care unit psychosis after cardiac surgery
Authors: Elgazzar Mohammed , Elmaghraby Mohammed , Sallam Khaled , Ebada Ahmed , Abdelmoteleb Anhar 
Published: January 2023

Background: Postoperative psychosis after cardiac surgery is associated with increased morbidity, length of hospital stay, and mortality. We aimed to assess the risk factors and outcomes of postoperative psychosis after cardiac surgery. Methods: This research is a retrospective observational case-control study that included 100 patients divided into two groups. Group 1 included 50 patients with postoperative psychosis, and Group 2 included 50 patients with no postoperative psychosis. Data were collected from the Cardiac Surgery Department database from October 2020 to April 2021.
Results: The mean age was 67.94 ± 11.69 years in patients with psychosis and 68.98 ± 10.19 years in the control (P= 0.636). Males patients presented 66% (n= 33) in patients with psychosis versus 70% (n= 35) in the control group. Cardiopulmonary bypass (144.9 ± 35.61 vs. 109.1 ± 17.19 min, P˂0.001) and ischemic times (61.96 ± 15.93 vs. 50.52 ± 9.62 min, P˂0.001) were significantly longer in patients with psychosis. The mean arterial pressure (MAP) (61.93± 13.44 vs. 80.78 ± 5.91 mmHg, P˂0.001) and oxygen saturation (79.82 ± 8.81 vs. 90.12 ± 4.91%; P˂0.001) were significantly lower in patients with psychosis. Central venous pressure was 11.76± 2.33 in patients with psychosis versus 3.58± 1.70 mmHg in the control group (P˂0.001). ICU was significantly longer in patients with psychosis (4.82 ±2.14 vs. 1.62 ± 0.55 days; P˂0.001), while there was no difference in the hospital stay. By multivariable analysis, lower MAP was an independent predictor of postoperative psychosis (OR: 0.930 (95% CI: 0.737–0.999), P= 0.045).
Conclusion: Low mean arterial pressure could predict postoperative psychosis. Proper blood pressure control could decrease the incidence of psychosis after cardiac surgery.
The effect of subcutaneous drain insertion after median sternotomy on surgical site infection in obese patients
Authors: Zahra Ashraf 
Published: January 2023

Background: Sternal wound infection after cardiac surgery is associated with high morbidity and mortality. This study aimed to assess the effect of subcutaneous wound drainage on surgical site infection in overweight patients undergoing cardiac surgery via median sternotomy.
Methods: This prospective study was conducted on 100 obese patients undergoing sternotomy as a part of cardiac surgery from March 2021 to June 2022. The study included two groups. Group 1 (n= 45) had prophylactic subcutaneous drainage after surgery, and Group 2 (n= 55) did not have prophylactic subcutaneous drainage.
Results: Hospital stay (7.8±1.9 vs. 8.65±1.38 days; P= 0.013) were higher in patients without drains. Deep sternal wound infection [2 (4.44%) vs. 9 (16.4%); P= 0.105], superficial wound infection [2 (4.44%) vs. 7 (12.7%); P= 0.18] and debridement with secondary suture [1 (2.2%) vs. 6 (10.9%); P= 0.125] were non-significantly lower in patients with subcutaneous drains.
Conclusion: Obese cases who received prophylactic subcutaneous wound drainage after sternotomy wound closure could have a lower incidence of wound complications. A larger randomized trial is recommended.
Candida Auris Endocarditis: An Enigmatic Case from Diagnosis to Management
Authors: Almramhi Khalid , Al-Ebrahim Khalid , Elassal Ahmed 
Published: January 2023

Background: The most common diagnosed cause of invasive candidiasis is Candida Albicans but according to literature a lot of confirmed cases of Candida Auris become emerging multidrug-resistant infections. In a Japanese patient in 2009, Candida Auris was first described. This fungus is attributed to many outbreaks in different countries. It is a highly resistant variant and one of the most violent emerging pathogens.
Case presentation: We present a case of endocarditis caused by Candida arius that resulted in a large vegetation on the mitral valve with severe mitral regurgitation.
Conclusion: Management of endocarditis by collaboration between surgical and non-surgical facilities may ensure a good outcome even in the case of rare violent infections.
ChatGPT on Characteristic Mode Analysis
Authors: Ghosal Sandip 
Published: January 2023

<p>ChatGPT is a natural language processing model based text-to-text AI interactive conversation platform developed using generative pre-trained architecture (GPT) by OpenAI. The present study utilizes the ChatGPT to understand the characteristic mode analysis-a popular numerical technique for antenna and array design in recent times. It was noted that ChatGPT can provide a basic understanding of characteristic mode theory in an elegantly simplified text language. However, being a data-driven model, its accuracy strongly depends on the data used to train the model, low accuracy is noted on predicting the names of the reference papers or related journal authors correctly in most cases. Another major limitation of using chatGPT is the lack of plagiarism check as it chooses sentences based on the training data resources. </p>
Design of Dispersion-Reconfigurable Phaser using PIN-Diode Loaded Stepped-Impedance Line
Authors: Lei Haoling , Huang Yi , Duan Chaijie , Zhang Qingfeng 
Published: January 2023

<p>This paper proposes a dispersion-reconfigurable reflection-type phaser based on PIN-diode loaded stepped-impedance microstrip line. By configuring `ON' and `OFF' states of PIN-diode, the proposed phaser exhibits positive-slope, negative-slope, and zero-slope linearly dispersive group delay responses. For proof-of-concept demonstration, we use line connection/disconnection to mimic ON/OFF states of PIN diode. Three prototypes are hence fabricated to represent the three different states. The experimental results agree well with the expected responses, which finally validate the proposed concept.</p>
Extraction of Mobility and Threshold Voltage from Noisy Current-Voltage Data
Authors: Ahmed Khaled 
Published: January 2023

<p>A simple, four-parameter formula is proposed and used to smooth noisy transistors curves for the purpose of stable extraction of transistor field-effect mobility and threshold voltage. The proposed smoothing shape function is found to work for data obtained for short and long transistors, low and high drain voltage, and for TFTs, ET-SOI, and Trigate MOSFETs</p>
Analytic Model of Quantum Dot LED Current-Voltage Characteristics
Authors: Ahmed Khaled 
Published: January 2023

<p>Quantum dot light-emitting diode (QDLED) displays promise superior color gamut with respect to organic light-emitting diode (OLED) displays and liquid-crystal displays (LCDs). In this paper, for the first time, a data-validated closed-form physics-based expression is derived for the I-V characteristics of QDLEDs. The I-V equation is derived using an approximation scheme which not only brings the previously intractable transport mechanisms back into the fold of analytic tractability but emphasizes the underlying physics of each transport mechanism in doing so. The model is shown to fit state-of-the-art experimental data over a large range of operating currents. The model may be used for circuit simulations.</p>
Toward a Nanostructured TeV accelerator: The DLA Nanostructured Cyclotron
Authors: Ghaderi Salar 
Published: January 2023

<p>Particle accelerators and their key characteristics including size, energy scale, gradient, and efficiency are at the core of any revolutionary development in various fields including particle physics, bioimaging, and many more. [2,3,4] Recently, linear accelerators benefiting from nanoscale optical interactions have been truly proven to be practical in various demonstrations and have made the miniaturization of massive accelerators possible up to 10⁴ times.[5,6] among various methods, DLA accelerators have shown the highest tolerance over highly intense fields [7,8]. Also, the successful demonstration of DLAs in an integrated chip structure that could reach an acceleration of up to 1.21 keV in 30 µm with a gradient of 40.3 Mev/m, further qualifies this method.[1] However, research in this field is bounded to the Linear accelerator (LINAC) model.[7] Here we for the first time demonstrate a novel DLA structure that accelerates in a cyclic manner thus introducing the curved structures to the field. This model is actually based on the cyclotron structure that we call the DLA cyclotron. According to square multiplication of area, this new method shifts the miniaturization of accelerators from 10⁴ reduction up to 10⁸ reduction due to cyclic acceleration in the micro-scale ring. We demonstrate an acceleration of 10 Mev in a radius of 800 µm via a gradient of 13.2 ev/m which is a record for DLA structures. This novel model is the window for nano-scale accelerators to reach the TeV range and even pass the current kilometer scale LHC ring. </p>
Electrode Effects in mmWave Frequency Multilayer Bulk Acoustic Wave Resonators
Authors: Peng Wenhao 
Published: January 2023

<p>Electrodes are present in acoustic resonators to set electrical boundary conditions. Electrodes are acoustically part of a bulk acoustic wave (BAW) resonator that affect both its electromechanical coupling coefficient and its quality factor. Calculation of electromechanical coupling coefficient in multilayer structures requires the analysis of a system of equations relating the waves inside each layer to those in its adjacent layers. In this work, layer thicknesses and material constants in each layer are used to calculate the series and parallel resonance frequencies. Due to the proximity in frequency of series and parallel resonance, a series expansion of the series resonance frequency equation is performed around the parallel resonance frequency, and a closed form expression for electromechanical coupling coefficient from material constants and layer thicknesses is obtained to facilitate the observation of the electromechanical coupling coefficient effects of electrodes. Thermoelastic damping (TED) has been identified as the dominant acoustic loss mechanism in conductors. In this work, the complex wavenumber is calculated based on the unified theory of thermoelasticity to incorporate acoustic loss due to the interaction between elastic deformation and heat flow. Acoustic quality factors due to TED for common metals in microelectromechanical systems (MEMS) processing are calculated to facilitate the observation of the quality factor effects of electrodes. It is observed that there exists tradeoff among electromechanical coupling coefficient, acoustic quality factor, and electrical conductivity in the selection of electrode metals.</p>
The Riemann Zeta function using the Method of Stationary Phase Approximation of the Van der Pol Fourier Integral
Authors: kermiche noureddine 
Published: January 2023

<p>The Van der Pol Fourier representation of the Riemann Zeta function in the critical strip is evaluated using the Method of Stationary Phase. The approximation allows us to propose new representation for the zeta function. </p>
Optimal Decision Strategies for the Generalized Cuckoo Card Game
Authors: Mignoni Nicola , Carli Raffaele , Dotoli Mariagrazia 
Published: January 2023

<p>Cuckoo is a popular card game, which originated in France during the 15th century and then spread throughout Europe, where it is currently well-known under distinct names and with different variants. Cuckoo is an imperfect information game-of-chance, which makes the research regarding its optimal strategies determination interesting. The rules are simple: each player receives a covered card from the dealer; starting from the player at the dealer's left, each player looks at its own card and decides whether to exchange it with the player to their left, or keep it; the dealer plays at last and, if it decides to exchange card, it draws a random one from the remaining deck; the player(s) with the lowest valued card lose(s) the round.</p>
<p>We formulate the gameplay mathematically and provide an analysis of the optimal decision policies. Different card decks can be used for this game, e.g., the standard 52-card deck or the Italian 40-card deck. We generalize the decision model for an arbitrary number decks' cards, suites, and players. Lastly, through numerical simulations, we compare the determined optimal decision strategy against different benchmarks, showing that the strategy outperforms the random and naive policies and approaches the performance of the ideal oracle.</p>
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<p>This preprint has been accepted for publication in<em> IEEE Transactions on Games</em>. </p>
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<p><strong>How to cite</strong>: N. Mignoni, R. Carli and M. Dotoli, "Optimal Decision Strategies for the Generalized Cuckoo Card Game," in IEEE Transactions on Games.</p>
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