bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Full-Scale Agent-Based Model to Hypothetically Explore the Impact of Lockdown, Social Distancing, and Vaccination During the COVID-19 Pandemic in Lombardy, Italy: Model Development
Authors: Giacopelli Giuseppe 
Published: June 2021

Background
The COVID-19 outbreak, an event of global concern, has provided scientists the opportunity to use mathematical modeling to run simulations and test theories about the pandemic.

Objective
The aim of this study was to propose a full-scale individual-based model of the COVID-19 outbreak in Lombardy, Italy, to test various scenarios pertaining to the pandemic and achieve novel performance metrics.

Methods
The model was designed to simulate all 10 million inhabitants of Lombardy person by person via a simple agent-based approach using a commercial computer. In order to obtain performance data, a collision detection model was developed to enable cluster nodes in small cells that can be processed fully in parallel. Within this collision detection model, an epidemic model based mostly on experimental findings about COVID-19 was developed.

Results
The model was used to explain the behavior of the COVID-19 outbreak in Lombardy. Different parameters were used to simulate various scenarios relating to social distancing and lockdown. According to the model, these simple actions were enough to control the virus. The model also explained the decline in cases in the spring and simulated a hypothetical vaccination scenario, confirming, for example, the herd immunity threshold computed in previous works.

Conclusions
The model made it possible to test the impact of people’s daily actions (eg, maintaining social distance) on the epidemic and to investigate interactions among agents within a social network. It also provided insight on the impact of a hypothetical vaccine.
Measuring the Impact of COVID-19 on Siyan Mental Health Patients Using the Epidemic-Pandemic Impacts Inventory: Survey Study
Authors: Shah Anish , Darling Michele , Arstein-Kerslake Olivia , Morgan Tiffany , Vance Tovrea Aubreen , Young James , Laines Helen 
Published: June 2021

Background
Recent research has shown that the impacts of the COVID-19 pandemic and social isolation on people’s mental health are quite extensive, but there are limited studies on the effects of the pandemic on patients with mental health disorders.

Objective
The objective of this study was to assess the negative impacts of the COVID-19 pandemic on individuals who have previously sought treatment for a mental health disorder.

Methods
This study uses the newly developed Epidemic-Pandemic Impacts Inventory (EPII) survey. This tool was designed to assess tangible impacts of epidemics and pandemics across personal and social life domains. From November 9, 2020, to February 18, 2021, a total of 245 adults recruited from a mental health clinic completed the consent form and responded to the survey link from the Siyan Clinical Corporation and Siyan Clinical Research practices located in Santa Rosa, California, USA.

Results
We found that the least affected age group included individuals aged 75 years or older. This was followed closely by the 65- to 75-year-old age group. People with children under the age of 18 years also reported both more negative indicators associated with the pandemic and more positive indicators compared to those without children at home. Gender queer, nonconforming, and transgender individuals may also be at higher risk for more negative impacts associated with the pandemic. When respondents were assessed with regard to their mental health diagnosis, no differences were noted. Substance use also increased during the pandemic.

Conclusions
In conclusion, the data collected here may serve as foundational research in the prevention, care, and treatment of mental health disorders during pandemics such as COVID-19. Populations such as those with previously diagnosed mental health disorders are particularly at risk for negative effects of pandemic-related stressors such as social isolation, especially if they have children in the household, are part of a younger age group, or have substance use disorder. Gender may also be a factor. Further, the EPII survey may prove to be a useful tool in understanding these effects. Overall, these data may be a critical step toward understanding the effects of the COVID-19 pandemic on populations with a mental health diagnosis, which may aid mental health practitioners in understanding the consequences of pandemics on their patients’ overall well-being.

Trial Registration
ClinicalTrials.gov NCT04568135; https://clinicaltrials.gov/ct2/show/NCT04568135
Minuciosos panoramas
Authors: De la Calleja Miguel Ángel , Véliz Cantú Mayela Eunice 
Published: June 2021

The breadth of the minuscule becomes a dim visual oxymoron; but, while subtle, it does not lose its intensity in the display of different perspectives or in the attribution of sensations in ways that do not correspond directly. Thus, the textures digitize the skin, and the aromas turn the sense of smell in these images.
To look inside is to look outside at the complexity of the universe. In the encounter of the fractalities, in the differences, the equalities converge. By accepting it, we assume the gift that we have as humans: especially when the panoramas are achieved through minutiae.

MVC-MACL

Gallery
Apunte geológico de la zona geotérmica de Pathé, Hidalgo ? nuevos datos y revisión histórica a partir de fuentes documentales
Authors: Canet Miquel Carlos , Franco Sara I. , Morelos Rodríguez Lucero , Rajabi Abdorahman , Núñez Useche Fernando 
Published: June 2021

La zona geotérmica de Pathé, en el sector oriental de la Faja Volcánica Transmexicana, ha atraído la atención de exploradores y científicos desde finales del siglo XVIII. El ingeniero de minas alemán Joseph Burkart (1798-1870), discípulo de Alexander von Humboldt (1769-1859), elaboró en 1836 una detallada descripción geológica de la zona, gracias a la cual esta zona geotérmica fue la primera en México en investigarse bajo los paradigmas de la ciencia moderna. A inicios del siglo XX la zona fue estudiada por el ingeniero José Guadalupe Aguilera Serrano (1857-1941), quien en 1907 describió las rocas eruptivas y sus productos de alteración. Su interés eran los yacimientos de caolín de Yexthó, situados a un km de las manifestaciones de termales. A mediados de siglo la zona ya se prospectaba como fuente de energía geotérmica, lo que culminó en la primera planta geotermoeléctrica del continente americano, en operación entre 1959 y 1972 con una capacidad nominal de 3.5 MW.
Las manifestaciones termales de Pathé se ubican en la intersección de dos sistemas regionales de fallas, de dirección N-S y E-W, y están encajonadas en una unidad volcánica (toba y lava) de composición básica a intermedia y edad Mioceno superior. Las alteraciones hidrotermales superficiales son conspicuas y su distribución está igualmente controlada por fallas pertenecientes a ambos sistemas. Asociada a las fallas N-S ocurre la asociación de alteración calcita-yeso, que involucra fluidos oxidados y alcalinos. Por otro lado, ligados a las fallas E-W ?más tardías? se hallan los depósitos de caolín, producto de una alteración argílica avanzada, característica de zonas de condensación de vapor. Las condiciones del fluido indicadas por esta alteración son un pH muy ácido (2–3) y temperaturas cercanas a los 100 °C. Por su clara asociación con las fallas, así como por la ausencia de vulcanismo reciente (Cuaternario) cercano, Pathé se clasifica como un sistema geotérmico convectivo controlado por fallas. La sucesión de eventos de alteración sugiere que la actividad hidrotermal inició desde antes del Plioceno.
ANALISIS POTENSI BRIKET BIO-ARANG SEBAGAI SUMBER ENERGI TERBARUKAN
Authors: Fitriana Widya , Febrina Wetri 
Published: June 2021

The research aimed to examine the potential of bio-charcoal briquettes as solid fuel using a SWOT analysis approach, by comparing them with non-briquette solid fuels. The SWOT method examines internal factors (IFAS) and external factors (EFAS). The research was conducted at a wood charcoal produces located at Dumai City, Riau. Data retrieval was carried out by means of observation and interview with the owner and workers. Including production data, marketing, problems faced during production, promotion and sale, product added value, product shortages and weaknesses, competitor data and opportunities in business development. The results of this research indicated that the advantages of briquette products was renewable, cheap, raw materials environmentally friendly, ease of packaging, cleanliness in the production process and efficiency in transportation. The disadvetages was less popular, requires a combustion furnace and fluctuating heat. The ooportunity was that the need for charcoal continues to increase, especially for restaurants and micro small industry. This research was recommend the importance of public policies related to the promotion and socialization of the use of bio-charcoal briquettes as a source of clean energy that is economical and environmentally friendly. Keywords: bio-charcoal briquettes, renewable energy, SWOT analysis
PEMANFAATAN SERAT PELEPAH KELAPA SAWIT SEBAGAI BAHAN PEMBUATAN KAMPAS REM SEPEDA MOTOR
Authors: Guntoro Guntoro , Yosephine Ingrid Ovie , Simanjuntak Simon 
Published: June 2021

Brake pads are generally made of asbestos, which is less environmentally friendly and widely available in nature, therefore motorcycle brake pads are made that utilize palm frond fibers filled with alumina powder and bonded to a polyurethane matrix. This research was conducted at the Laboratory of Material Testing of Industrial Chemical Technology Polytechnic (PTKI) Medan. Research was carried out from February-July 2020, using two test, namely the Rockwell Hardness level test and the Pin On Disk Friction Coefficient test. The result showed that oil palm frond fibers can be made into motorcycle brake pads with the addition of alumina powder according to the predetermined composition. After going through the test, the Rockwell hardness level was obtained in A2 treatment (6% Alumina) with the highest and best hardness level, namely 52.75 Kg. And after testing the friction coefficient of the Pin On Disk type, brake pads from palm frounds with the addition of alumina powder composition which have the lowest coefficient value of the best are obtained in treatment A2 (6% Alumina) with a value of 0.000765 N/mm2. Keywords : biocomposite, brake shoes, palm fround fibers, alumina powder
HIDUNG ELEKTRONIK BERBASIS SENSOR GAS MOS UNTUK KARAKTERISASI KEMATANGAN BUAH KELAPA SAWIT
Authors: Shiddiq Minarni , Sitohang Lentina Br , Husein Ikhsan Rahman , Ningsih Sinta Afria , Hermonica Sri , Fadillah Annisa 
Published: June 2021

The ripeness of oil palm fruits is one of the key factors for crude palm oil qualities. Recently, electronic nose systems have been developed intensively for fruit quality assessment which relates odors to ripeness levels. This study developed an electronic nose system to characterize the ripeness levels of oil palm fruits using output voltage of each sensor and fruit hardness. The system consisted of a sensor chamber and a sample chamber. The sensor chamber consisted of eight MOS gas sensor modules of MQ series. Samples were oil palm fruits taken from oil palm fresh fruit bunches (FFB) which were previously categorized traditionally into unripe, ripe, over ripe, peeled and put into the sample chamber. Some of the fruits were also used for hardness measurement. To quantify the output voltages for each sensor, integrated trapezoid areas were calculated and related to the fruit hardness values. The results showed a significant voltage difference of each sensor for the three ripeness levels. Only four out of eight sensors showed significantly higher voltages. Three sensors which can significantly differentiate the ripeness levels are MQ3, MQ5, and MQ135 which MQ135 is the best. This shows that the electronic nose is potential for oil palm fruits. Keywords: electronic nose, fruit hardness, MOS gas sensor, oil palm fruit, ripeness
MEMPELAJARI KARAKTERISTIK FISIK BIJI KAKAO (Theobrema cacao L.) PADA SUHU PENGERINGAN YANG BERBEDA
Authors: Waluyo Sri , Saputra Tri Wahyu , Permatahati Nikita 
Published: June 2021

Drying is a common process step for agricultural grain products for ease of handling and to achieve the desired quality levels. One of the commodities that have high economic value produced by farmers in Lampung Province is cocoa beans. The drying process may change the physical properties of the cocoa beans and affect the processing of cocoa beans at a later stage. This study aims to determine the effect of drying temperature on changes in the physical properties of cocoa beans such as dimension, volume, weight, surface area, true density, bulk density, porosity, sphericity, and angle of repose. This research was applied to fresh non-fermented cocoa beans in testing. The cocoa beans were dried at temperatures of 40, 50 or 60oC. The research data were then statistically tested using paired sample T-Test at the 95% level to determine whether there is any effect of drying temperature on changes in its physical properties. The results showed a significant effect of drying temperature on weight, volume, geometric mean diameter (Dg), surface area, bulk density, porosity, and angle of repose of cocoa beans. Meanwhile, the sphericity and true density parameters did not significantly change. Keywords: cocoa beans, drying, physical properties
DAYA TAMPUNG SUNGAI REMBAGAN TERHADAP BEBAN PENCEMARAN MENGGUNAKAN METODE STREETER-PHELPS
Authors: Wahyuningsih Sri , Novita Elida , Satya Irfan Dwi 
Published: June 2021

Rembagan River is the main tributary of the Bedadung River in Cangkring Village, Patrang District, Jember Region. Various community activities in the Rembagan River area such as bathing, washing, defecating and urinating as well as agricultural activities will produce domestic and agricultural waste. These wast can cause river water pollution, especially water quality degradation. then the research needs to be done an analysis of the capacity of the Rembagan River in receiving pollution costs. The purpose of this study is to find out how much the ability of the Rembagan River to accept the burden of pollutants using the Streeter-Phelps method. Streeter-Phelps modeling takes into account two phenomena, namely the process of measuring dissolved oxygen (deoxygenation) and the process of increasing dissolved oxygen (reaeration). The results obtained from these calculations are oxygen drop curves determined on the basis of oxygen deficit values. The average values of deoxygenation rate and reoxygenation rate were sequentially 1.58931 mg/L/day and 10.09982 mg/L/day. So that self-purification can run well which means the water quality of the Rembagan River was still relatively good. This can be seen in the DO model pattern that goes up in each segment. The actual DO of 5.6760 mg / L was greater than the DO standard of class III quality of 3 mg / L. It can be interpreted that the Rembagan River still has a remaining DO of 2.676 mg / L and was still able to accept pollution cost of 18.8 kg/day. Keywords: pollution load, Rembagan River, river capacity
UJI KINERJA DAN KELAYAKAN FINANSIAL PENGERING PATI SAGU TIPE PNEUMATIC CONVEYING RING DRYER
Authors: Jading Abadi , Payung Paulus , Tethool Eduard Fransisco 
Published: June 2021

Sago starch drying in remote areas or difficult to reach transportation requires artificial dryers to increase the quantity and quality of the dry sago starch. The purpose of this study was to test performance, and analyze the economic value of biomass powered pneumatic conveying ring dryer (PCRD) for drying sago starch for small scale commercial. This research was conducted in two stages, namely performance testing and financial analysis. Small scale (mini) PCRD has been created for drying sago starch with a capacity of 160 kg of dry sago starch per day. The resulting moisture content varies according to variations in temperature and initial moisture content of sago starch and has met the Indonesia National Standard (SNI) No. 3729 regarding the maximum water content of sago starch (13%), except at temperature variations of 50oC and 75oC with an initial moisture content of 41% that did not meet the SNI, which was greater than 13% (14.27% and 13.23%). The drying efficiency varies between 7.339% to 9.689%. Likewise, the yield of dry sago starch that was produced varied between 65% and 73%. PCRD is very feasible to be developed into a commercial scale sago starch dryer with a Pay back value of 2.66 years to return the initial capital of Rp. 186,879,200. Keywords: drying, financial analysis, PCRD, sago starch
ХВИЛЕВІДНА СИСТЕМА ЖИВЛЕННЯ РУПОРНОЇ АНТЕНИ З КОЛОВОЮ ПОЛЯРИЗАЦІЄЮ
Authors: Забегалов Ігор Вікторович , Шарпан Ярослав Едуардович , Діхтярук Іван Іванович , Пільтяй Степан Іванович , Булашенко Андрій Васильович 
Published: June 2021

У статті наведена методика розробки та оптимізації системи живлення рупорної антени із коловою поляризацією. Рупорна антена має металеву конструкцію та складається із хвилеводу, що має змінний переріз та відкритий випромінюючий кінець. Електромагнітні хвилі у такій антені збуджують за допомогою хвилеводу, що вмикають до вузької стінки рупорної антени. Запропонована система живлення рупорної антени складається із прямокутного хвилеводу зі щілиною. Щоб на виході отримати в рупорній антені збудження сигналів із коловою поляризацією, щілину було вирізано у прямокутному хвилеводі під кутом 45º. В результаті схема дає можливість формувати сигнали з правою круговою поляризацією та лівою круговою поляризацією. Представлена конструкція системи живлення рупорної антени усуває необхідність розробки окремо хвилевідного пристрою формування колової поляризації. Спроектована система живлення рупорної антени із коловою поляризацією може використовуватися на робочій частоті 8 ГГц. На ній коефіцієнт відбиття є нижчим за −19 дБ. Запропонована рупорна антенна забезпечує максимальне значення коефіцієнта підсилення 21дБ для правої колової поляризації та максимальне значення коефіцієнта підсилення 10 дБ для лівої колової поляризації. Кросполяризаційна розв’язка перевищує 10 дБ. Таким чином, розроблена система живлення рупорної антени забезпечує вузькосмуговий режим роботи на коловій поляризації із задовільними електромагнітними поляризаційними характеристиками та узгодженням на частоті 8 ГГц. Розроблена система живлення рупорної антени з коловою поляризацією може використовуватися у радіотехнічних системах, які здійснюють поляризаційне оброблення сигналів.
A procedure of automatic evaluation of residual statistic adjustments for increasing information value of exploration seismology data
Authors: Verpakhovska A.O. , Lesnoy G.D. , Polunin A.I. 
Published: June 2021

In present-day seismic exploration the quality of the observed wave field that guarantees obtaining the most exact and complete information on the structure of the studied area plays an important role. Therefore much attention is paid to elaboration of procedures for elimination of different noises and distortions present in the registered data. They include correction of statics or calculation and maintenance of static adjustments with taking into account the influence of small velocities zone (SVZ) and locality relief at each station of reception and explosion along the profile or observation area to the form of hodograph.
A procedure of automatic finding of residual statistic corrections based on usage of seismograms of equal distances and first wave arrivals without conducting their correlations that gives a possibility to exclude the effect of operator mistakes to the result has been considered. A theory has been proposed with algorithm consisting of putting in the observed wave fields, assortment of paths, finding temporal shifts by equidistant paths and computation of correcting adjustments for all the sources and receivers and the programming realization of finding the residual statistic corrections as a new interactive program corst3D, aimed at increasing the level of studies of structure of geological medium of different complexity by the data of both 2D and 3D seismic exploration. Effectiveness of the given procedure at the real data of seismic exploration for improvement of their quality and as a result for rising information value of their processing and interpretation has been shown together with colleagues of «GEOUNIT» company.
Nitrogênio em soja: qualidade fisiológica das sementes
Authors: Barão Medeiros Letícia , Aisenberg Geison Rodrigo , Peter Márcio , Mengue Rolim Jéssica , Zanatta Aumonde Tiago , Pedó Tiago 
Published: June 2021

O objetivo deste estudo foi avaliar os componentes de rendimento e de qualidade fisiológica de sementes de soja cultivadas com aplicação de diferentes doses e épocas de aplicação de nitrogênio. O delineamento inteiramente casualizado, em esquema fatorial 4x2 (quatro doses de nitrogênio e duas épocas de aplicação), com quatro repetições. A aplicação de nitrogênio foi feita na forma de uréia (45% de N), nas doses de 0, 25, 50 e 75 kg N ha- 1 durante a semeadura e no estádio R4 da cultura. Foi avaliado o número de vagens por planta, o número de sementes por planta, a massa de mil sementes, primeira contagem de germinação, porcentagem de germinação, massa seca de parte aérea e raiz. A aplicação de nitrogênio influenciou positivamente nos parâmetros de rendimento da soja na dose de 75 kg N ha-1 durante o enchimento de grãos. Durante a semeadura, a dose de 25 kg N ha-1 resultou em maiores médias da massa seca de parte aérea, 50 kg N ha-1 incrementou a massa de mil grãos e massa seca de raiz e a aplicação de 75 kg N ha-1 na semeadura durante a primeira safra obteve resultados positivos para a primeira contagem de germinação e germinação. Para os resultados da segunda safra, a aplicação de 50 kg N ha-1 em semeadura proporcionou incremento da primeira contagem de germinação.
Fragmentation of Modern Artistic Narrative (English-Language Prose)
Authors: Lushnikova G. I. , Osadchaya T. Yu. 
Published: June 2021

The question of the role, forms and functions of fragmentation of modern artistic narra tive is considered. The results of the analy sis of the fragmentary narrative of the works of contemporary English-speaking authors (J. Barnes, D. Mitchell, M. Cunningham, I. Banks, J. Franzen, S. Faulks, J. Eugenides, A. Smith, J. McGregor and others) are presented. The relevance of the study is due to the fact that in the modern literature of the postmodernist direction, nonlinearity of narration, deliberate mixing of temporal, local, descriptive and other layers are becoming widespread, practically becoming the norm. The novelty of the research is seen in the fact that the fragmentation of a literary text is studied at different levels — compositional, content-thematic, plot, ideological-figurative, genre, narrative, chronotopic. It has been proved that the forms of implementation of fragmentariness are quite diverse: irregular division of the text, heterogeneity of themes and ideas, lack of linear development of the plot, combination of elements of different genres, the presence of internal polystylism, the use of different types of narration and narrator, violation of the unity of the chronotope. The analysis of specific material showed that the functions of a fragmentary narrative are determined by each specific context, the leading ones being the impact on the reader, the management of his attention, the placement of accents according to the writer's intention, the creation of the impression of authenticity and reliability.