bluuebunny/crossref_metadata_2025 huggingface dataset:
nanopore nCoV-2019 sequencing protocol (RAPID barcoding, 1200bp amplicon, combined RT-PCR) v1
Authors: Pembaur Anton , Sallard Erwan , Weil Patrick , Ortelt Jennifer , Ahmad-Nejad Parviz , Postberg Jan
Published: July 2021

We established a protocol for fast, cost efficient Sars-CoV-2 sequencing with little as possible hands-on time (around 3h in total, excluding RNA extraction). The whole Sequencing can be done in one working day, including the bioinformatic pipeline. The cost per sample accumulates at around 40$, with already isolated RNA. We adapted and simplified existing workflows using the ‘midnight’ 1,200 bp amplicon split primer sets for PCR, which produce tiled overlapping amplicons covering almost all of the SARS-CoV-2 genome. Subsequently, we applied the Oxford Nanopore Rapid barcoding protocol and the portable MinION Mk1C sequencer in combination with the ARTIC bioinformatics pipeline. We tested the simplified and less time-consuming workflow on confirmed SARS-CoV-2-positive specimens from clinical routine and identified pre-analytical parameters, which may help to decrease the rate of sequencing failures. Duration of the complete pipeline was approx. 7 hrs for one specimen and approx. 11 hrs for 12 multiplexed barcoded specimens. This protocol is a modified version of Nikki Freed and Olin Silanders protocol. To get information such as Primers, visit their protocol. Nikki Freed, Olin Silander 2020. nCoV-2019 sequencing protocol (RAPID barcoding, 1200bp amplicon).doi: 10.1093/biomethods/bpaa014
Growing Soybean in the Greenhouse v2
Authors: Doran Lynn
Published: July 2021

Protocol for planting, germinating, and growing soybeans in the UIUC RIPE or ACES Plant Care Facility greenhouse. Has been verified on Petite Havana and Samson cultivars.
Numerical solutions of the randall-wilkins and one trap one recombination models for first order kinetic
Authors: UZUN Erdem
Published: July 2021

Randall-Wilkins and One Trap One Recombination (otor) models have been proposed to explain thermoluminescence emission and it should be emphasized that each model has its own allowed charge carrier transitions, trapping parameters and differential equations set. The equations are generally first or higher order linear differential equations with constant coefficients and their numerical solutions are an initial value problem. From this point on, numerical solutions of the thermoluminescence equations have been effectively used. In this paper the models were solved, numerically by using Euler and Runge-Kutta methods on Mathematica 8.0. In this work, although the fastest result calculated by Explicit Euler method, the most accurate results were calculated Linearly Implicit Euler method.
Spina bifida: a multidisciplinary problem (a literature review)
Authors: Ivanov Stanislav V. , Kenis Vladimir M. , Shchedrina Anna Y. , Onufriichuk Oleg N. , Khodorovskaya Alina M. , Osipov Igor B. , Sarychev Sergei A.
Published: July 2021

BACKGROUND: Congenital malformations of the spine and spinal cord can be combined with various clinical manifestations of the spine, spinal cord, and lower extremities. Children with these neurological disorders often lack sensitivity and motor activity of their lower extremities and, in most cases, have bladder infections and incontinence (lack of bladder and bowel control).
AIM: This study aims to analyze publications with the diagnostic and treatment results of patients with neurological, orthopedic, neurological, and ophthalmological problems with spina bifida.
MATERIALS AND METHODS: We searched PubMed, Web of Science, Scopus, MEDLINE, eLibrary, and RSCI databases and found about 2000 references and 374 articles. We selected 60 articles for review in orthopedics, neurosurgery, urology, and ophthalmology.
RESULTS: Neural tube defects are a wide range of congenital malformations, including skull defects and open or closed spinal dysraphism. The incidence of spine and spinal cord malformations in different countries is quite broad and amounts to 0.3199.4 cases per 10,000 births worldwide. Spinal cord malformations often occur in combination with bladder infections and incontinence, limb deformities, and other central nervous system developmental anomalies. Among the orthopedic problems leading to impaired support function, the most common are foot deformities and hip joint instability. Orthopedic monitoring of a patient with spina bifida consists of mainly preventing or correcting deformities according to the rehabilitation potential of the child. The timely completion of treatment allows the child to maintain mobility and independence of movement daily activities. At the same time, such treatment must pursue realistic goals according to the potential motor level of the child. In addition to neurosurgical and orthopedic problems, most children with spina bifida (88%94%) suffer from pelvic disorders. A urologist should observe a patient with spina bifida to perform ultrasound and laboratory monitoring of both the lower and upper urinary tract conditions from an early age. Timely procedures to eliminate urinary retention and sanitation can maintain normal kidney function and contribute to the adequate conduct of motor and neurological rehabilitation of the child. The most common complication of spina bifida is the Chiari II malformation, which is manifested by damage to brain stem structures and internal occlusal hydrocephalus with various symptoms, including neuroophthalmological signs.
CONCLUSIONS: A multidisciplinary team of specialists comprising a neurologist, neurosurgeon, urologist, orthopedic surgeon, ophthalmologist, orthosis specialist, and psychologist should be involved in treating the children with the above presented problems. The use of an integrated approach to treat this group is absolutely justified and enabled the maximum rehabilitation potential of the child to be achieved.
Sepsis in children: federal clinical guideline (draft)
Authors: Lekmanov Andrey U.
Published: July 2021

The article publishes a draft clinical recommendation on sepsis in children, developed by specialists of the Association of Pediatric Anesthesiologists and Resuscitators (ADAR) of Russia and approved at the 2nd Russian Congress of Pediatric Anesthesiologists and Resuscitators in April 2021. The definitions of sepsis and septic shock in pediatric patients and their criteria are proposed and substantiated. Data on etiology and pathogenesis, epidemiology, clinical picture and diagnosis of shock are presented. The recommendations are based on a large clinical material of intensive care for sepsis and septic shock in children. The paper provides data on the rehabilitation, prevention and organization of medical services for sepsis in children. The editorial staff of the journal accepts all comments and additions to this project for transmission to the developers.
To the 90-th Anniversary of Maya K. Bukhrashvili
Authors: Petlakh Vladimir I.
Published: July 2021

Description of the professional activities and merits of the chief physician of one of the oldest children's hospitals in Moscow - .K.A. Timiryazev Children's Hospital №20 - Maya K. Bukhrashvili, celebrating her anniversary.
Sandra Soler. Mujeres músicas. Dificultades, avances y metas a alcanzar en el siglo XXI. Castellón: Publicacions de la Universitat Jaume I, 2019.
Authors: Saneleuterio Elia
Published: July 2021

Mujeres músicas. Dificultades, avances y metas a alcanzar en el siglo XXI Autora: Sandra Soler.Castellón: Publicacions de la Universitat Jaume I, 2019.
Representación de género en las series españolas de plataformas de streaming=Representation of gender in the Spanish series of streaming platforms
Authors: Barrios Rodríguez Sara , González-de-Garay Beatriz , Marcos Ramos María
Published: July 2021

ResumenEste artículo recoge los principales resultados de un estudio realizado siguiendo la técnica del análisis de contenido en las plataformas de streaming sobre un total de 760 personajes (n = 760) de 33 series de Movistar+, HBO, Amazon Prime, Atresplayer Premium y Netflix. El objetivo es determinar si existen diferencias de género en la representación de los personajes, rasgos de personalidad, actitudes, objetivos personales o laborales, tipo de empleo que desempeñan, comportamientos de salud e interacciones sociales. Algunas de las conclusiones fueron la infrarrepresentación de la mujer y las orientaciones no heterosexuales, la perdurabilidad de los estereotipos de género en cuanto a objetivos personales y rasgos de personalidad, y la permanencia de la mujer en determinados puestos laborales.AbstractThis paper carries out a content analysis on streaming platforms of a total of 760 characters (n = 760) from 33 series from Movistar+, HBO, Amazon Prime, Atresplayer Premium and Netflix. The aim is to determine whether there are gender differences between the characters with respect to representation, personality traits, harmful attitudes, personal or work objectives, type of employment, health behaviors and social interactions. Some of the findings were the under-representation of women and non-heterosexual sexual orientations, the persistence of gender stereotypes in terms of goals and personality traits, and the permanency of women in certain types of employment.
Discurso de la violencia política de género en las notas informativas de las elecciones 2018 en Guerrero, México=Discourse of gender-based political violence in news stories about the 2018 electoral process in the State of Guerrero, Mexico.
Authors: Tello Divicino Aleida Leticia , Morales Jiménez Mónica Violeta , Islas Flores Iván Alfredo
Published: July 2021

ResumenLos resultados que se presentan en este artículo muestran el papel que tiene la actividad periodística en la construcción del discurso acerca de los casos de violencia política de género en Estado de Guerrero, México, en el proceso electoral del año 2018. Se analizaron las notas informativas locales de acuerdo con la propuesta metodológica del análisis crítico del discurso. Los hallazgos demuestran la importancia que la actividad periodística tiene en los procesos electorales y podrían aplicarse en el marco de otras elecciones a nivel federal en México, de otra región o incluso de sociedades con mayor tradición democrática. Asimismo, los resultados muestran la relevancia del discurso periodístico para comunicar las repercusiones de este tipo de violencia contra las mujeres.AbstractThe results presented in this article show the role of journalistic work in the construction of the discourse about gender-based political violence cases in the State of Guerrero, Mexico, in the 2018 electoral process. Local news stories were analyzed according to the Critical Discourse Analysis method. The findings demonstrate the importance of journalism activity in the electoral processes at the federal level in Mexico, in another region or even in societies with a longer democratic trajectory. Likewise, the results show the relevance of journalistic discourse to communicate the repercussions of this type of violence against women.
Candidatas Guerreiras no Brasil: um estudo de caso das narrativas audiovisuais das mulheres mais votadas às prefeituras das capitais em 2020=Women warrior candidates in Brazil: a case study of the audiovisual narratives of the most voted women for capital city halls in 2020
Authors: Panke Luciana
Published: July 2021

ResumoEsta investigación expone la estructura de un patrón de objetificación respecto al cuerpo Nas últimas eleições municipais brasileiras, apenas uma mulher foi eleita para governar uma capital, entre os 26 estados da federação. Este artigo apresenta o cenário eleitoral para, então, trazer análise das narrativas audiovisuais das três candidatas mais bem votadas naquele pleito:  Cinthia Ribeiro (PSDB), eleita em Palmas (TO), região Norte, Manoela D’Ávila (PCdoB), no Sul, em Porto Alegre (RS) e Marilia Arraes (PT) em Recife (PE), Nordeste. Como metodologia aplicou-se a proposta de PANKE (2015, 2016, 2018) para identificar os arquétipos das candidaturas femininas: Guerreira, Maternal e Profissional. Como resultado, observou-se que os vídeos posicionaram as candidatas de maneira combativa. Ainda que houvesse a exibição também da maternidade nas três campanhas, a eleita foi quem exibiu equilíbrio entre arquétipos. AbstractThis investigation exposes the structure of a landlord of objectification with respect to the body. In the last Brazilian municipal elections, only one woman was elected to govern a capital, among the 26 states of the federation. This article presents the electoral scenario and analyzes the audiovisual narratives of the three best-voted candidates in that election: Cinthia Ribeiro (PSDB), elected in Palmas (TO), North region, Manoela D'Ávila (PCdoB), in the South, in Porto Alegre (RS) and Marilia Arraes (PT) in Recife (PE), Northeast. As a methodology, the proposal of PANKE (2015, 2016, 2018) was applied to identify the archetypes of female candidates: Warrior, Maternal and Professional. As a result, it was observed that the videos positioned the candidates in a combative way. Although there was also an exhibition of motherhood in the three campaigns, the elected was the one who exhibited balance between archetypes.
Otra animación infantil es posible. Un análisis de las series “Steven Universe, She-Ra y Star vs Forces of Evil”=Another children’s animation is possible. An analysis of the tv series ‘Steven Universe, She-Ra and Star vs Forces of Evil’
Authors: Aguado-Peláez Delicia , Martínez-García Patricia
Published: July 2021

ResumenEl objetivo del presente artículo es examinar la representación de personajes femeninos y masculinos y su impacto en las tramas en las series de animación infantil: Steven Universe, Star vs Forces of Evil y She-Ra and the Princesses of Power. Para ello, se utilizan como herramientas metodológicas el análisis de contenido cualitativo y la interseccionalidad. Su apuesta por la diversidad en las presencias y por el diálogo y la empatía en sus narrativas las alejan de modelos hegemónicos de dibujos animados que apuestan por la normatividad y la otredad. Así, estas series constituyen una oportunidad para superar los estereotipos de género dentro (y fuera) del mundo de ficción.AbstractThe aim of this article is to examine the representation of female and male characters and their impact on the plots in the children's animated series: Steven Universe, Star vs Forces of Evil and She-Ra and the Princesses of Power. For this purpose, qualitative content analysis and intersectionality are used as methodological tools. Their commitment to diversity in their presences and to dialogue and empathy in their narratives distance them from hegemonic cartoon models that focus on normativity and otherness. Thus, these series constitute an opportunity to overcome gender stereotypes within (and outside) the fictional world.
Contrast-Enhanced Ultrasound in the Diagnosis of Ocular Pathology: Application Prospects
Authors: Kiseleva T. N. , Bedretdinov A. N.
Published: July 2021

Contrast-enhanced ultrasound is a highly informative method for the differential diagnosis of focal changes in various organs and tissues, which allows to visualize vascular structures and obtain new previously unavailable information when using standard b-scan. At the beginning of the 21st century after the development of a new generation of contrast agents consisting of microbubbles with inert gas contrast-enhanced ultrasound became widely used to improve visual assessment of small-caliber vessels in the diagnosis of the abdominal cavity and retroperitoneal space pathology: benign and malignant liver formations, spleen pathology, inflammatory diseases and tumors of the pancreas, defects in renal perfusion, tumor and cystic lesions of the kidneys. Assessment of intraocular tumors microcirculation and diagnosis of vitreoretinal pathology are still two main directions of using contrast-enhanced ultrasound in ophthalmology. In recent years, there has been a growing interest in the use of contrast-enhanced ultrasound in the study of perfusion of different types of uveal melanoma in an animal experiment. A promising direction in the field of genetic engineering is the use of local contrast-enhanced ultrasound exposure on retinal cells (retinal ganglion cells, retinal pigment epithelium) to promote gene transfection (non-viral nucleic acid delivery into the DNA of a cell), which is an important part of gene therapy. Despite the successes achieved in the study of contrast-enhanced ultrasound effectiveness in medicine, further research is needed to increase the informative value of this method in the diagnosis of ophthalmopathology.
Field Performance of False Horn Plantain (Musa AAB) Corms Treated Mechanically and with Hormone Solutions
Authors: Opata John , Dzomeku Beloved Mensah , Darkey Solomon Kodjo , Opoku Enoch , Bam Raphael Kwame , Wünsche Jens-Norbert
Published: July 2021

The growth and yield performance of macropropagated plantlets of the False Horn plantain cultivar ‘Apantu’ was evaluated due to the lack of reliable data on the effectiveness of that planting material under typical farming conditions in West Africa, Ghana. Corms were either mechanically treated by the Plants Issus de Fragments de tige (PIF) technique to destroy the apical meristem or remained intact as untreated controls. Subsequently, PIF-treated corms were vacuum infiltrated with either natural or synthetic plant hormone solutions. Emerging plantlets were harvested, acclimatized for three months and planted in a freshly prepared field. Vegetative growth characteristics of each mother (main) plant were taken at 6 and 9 months after planting and for the main and first sucker crop along with yield parameters at harvest, respectively. The results indicated that treatment induced growth differences at 6 and 9 months after planting and were no longer significant at harvest. Consequently, final growth performance was quite homogenous across all treatments for the main and sucker crop, respectively. In contrast, fruit yield parameters of the main and sucker crops were to some extent affected by treatment; however, hormone infiltration tended to have little additional effect over the PIF-treatment. Nevertheless, treating corms with hormonal solutions enhanced the production of rooted plantlets at the nursery stage and ensured improved field performance.
Effect of NPK Fertilizer Rates on Growth and Yield of Field and Greenhouse Grown Pepino Melon (Solanum muricatum Aiton)
Authors: Mutua Carol , Ogweno Joshua Otieno , Gesimba Robert Morwani
Published: July 2021

Pepino melon (Solanum muricatum Ait.) is an exotic vegetable whose consumption is on the increase in Kenya due to its health and nutritional benefits. A study was conducted at Egerton University, Kenya in 2018-2019 to investigate the effect of NPK fertilizer rates (0, 100, 200. 300 and 400 kg ha-1) on growth and yield of field and greenhouse grown pepino melons. The experiment was laid in a randomized complete block design with three replications. Data was recorded on plant height, stem diameter, number of leaves per bush, number of branches, days to 50% flowering, fruit weight and total yield. Data were analyzed using analysis of variance with the SAS statistical package. Significant means were separated using Tukey’s Honestly Significant Difference at p ≤ 0.05. Results indicated that NPK fertilizer rates and growing environment influenced growth and yield of pepino melon. At 100 DAP plants grown in the greenhouse and supplied with 200 kg NPK ha-1 had a stem diameter of 14.01 mm which was significantly bigger p ≤ 0.05 compared to those grown in the field and supplied with 300 kg NPK ha-1 with a stem diameter of 11.71 mm in trial two. Application of 300 kg NPK ha-1 for field grown pepino melons gave the highest yield of 1102.48 kg ha-1 and 1060.55 kg ha-1 in trial one and two respectively. In conclusion, application of 300 kg ha-1 of NPK fertilizer for field grown pepino melon is recommended.
Moving with the Screen on Zoom: Reconnecting with Bodily and Environmental Awareness
Authors: Loussouarn Claire
Published: July 2021

Rather than seeing Zoom as a replacement for practicing movement and dance in a shared physical space, I propose to consider our relationship with the screen on Zoom as a movement in its own right. Using my experience of teaching movement on Zoom, I ask how we can connect with another via the screen without losing awareness of our bodies and the space which we're in. I argue that Zoom is a place of 'moving selfies' in dialogue where we can engage critically with the screen by practicing seeing with the whole body and moving with diffuse awareness and where we can critically reflect on our own habits of framing the world and its biases.
Coming Together by Moving Apart: Contemporary Dance Scores and Communities During the Covid-19 Pandemic
Authors: Blades Hetty
Published: July 2021

This paper discusses Roof/Roof Piece, an adaptation of Trisha Brown's Roof Piece by Trisha Brown Dance Company and perch a dance made by Amy Voris and adapted by Voris and Katye Coe for Coe to perform in her home and online. Both these adaptations began during the Covid-19 pandemic, in contexts when the artists could not meet in person. I consider the role that the scores played in facilitating these shared practices, asking how they allowed for the development and continuation of bonds between members of dance communities during this period.
Extended Beings: Screendance as a Reflective and Interrogative Tool During Covid-19
Authors: Kalyanasundaram Sandhiya
Published: July 2021

No abstract available.
A Forum of Questions for Active Viewing, Learning and Creating on Screen(s) During a Global Pandemic
Authors: Frasson Elisa , Hayes Marisa C. , Longo Marco , Mikou Ariadne , Vaghi Katja
Published: July 2021

No abstract available.
Honoring the Unseen
Authors: Cabeen Catherine
Published: July 2021

No abstract available.
Notes on Pandemic-Era Screendance-making
Authors: Salzer Rebecca
Published: July 2021

No abstract available.
Two-way Mirrors: Dancing in the Zoomosphere
Authors: Murphy Siobhan
Published: July 2021

Dan Graham's work with mirrors and installation from the 1970s provides an unexpected launchpad for understanding the structures underlying perception in Zoom interfaces. The article explores the intricacies of Graham's two-way mirrors as a means to articulate perceptual experiences of dancing in the Zoomosphere, with examples from teaching, choreographing and performing via Zoom during Covid 19 isolation conditions.
Virtual Democracy: Online Ballet and Contemporary Dance Classes During the Covid-19 Crisis
Authors: Milovanovic Dara
Published: July 2021

This article considers the politics and dynamics of online ballet and contemporary dance classes during the Covid-19 lockdown on geo-political, economic, and cultural implications of dance classes in digital media. Using a post-colonial lens and popular dance studies, this research analyzes the effect of the online ballet and contemporary classes colonizing digital spaces and the effect of this phenomenon on creating a more democratic and participatory access to dance that has built a more global and inclusive engagement with the arts for geographically peripheral spaces. This essay investigates the kind of common created by kinaesthetic experience of the dancers teaching and participating in the classes in digital media providing a key strategy to analyze the participatory embodiment of dancers as a radical, material, corporeal challenge to the hierarchies of the dance world, and furthermore, the economic dynamics that shape it.
A Provocation for Screendance as a Secular Space
Authors: Bhattacharyya Sumedha
Published: July 2021

No abstract available.
TikTok and Short-Form Screendance Before and After Covid
Authors: Harlig Alexandra , Abidin Crystal , Boffone Trevor , Bowker Kelly , Eloi Colette , Krayenbuhl Pamela , Oh Chuyun
Published: July 2021

No abstract available.
Reimagining mined landscape for various new purposes: bringing life back to the derelict sites
Authors: Bhattacharya Jayanta
Published: July 2021

No Abstract.
Shale oil and ecology in Australia – the search for balance
Authors: Mekhdiev Elnur T. , Guliev Igbal A. , Solovova Yulia V.
Published: July 2021

Today Australia is one of the main mineral resources exporters in Asia. Besides, the country possesses huge reserves of shale oil and gas. The estimation of these resources extraction potential without any harm to country’s ecology and society is one of the key aims of this article. The authors research an export and import dynamic of hydrocarbon by Australia with the aim to identify an economic effect from the beginning of shale oil extraction in 2011. Besides, according to expert community’s opinion, there is the emission dynamic of carbon dioxide, which is one of the key factors, determining the environment pollution after the beginning of shale oil extraction in Australia. The major challenge of the article is to estimate the difficulty in real correlation between the ecology and the financial benefits for the economy, as these two factors are loosely connected and the index of additional harm to wildlife and people cannot be directly calculated in financial losses. The major contribution of the article is the development and comparison of the two scenarios of oil extraction and exports with or without frocking bans in Australia. The authors come to the conclusion that positive effects from shale oil and gas extraction for country’s economy do not surpass negative effects for ecology; thus, the authors suggest to use the shale oil reserves only as the strategic resource for economic recovery after crises and at the present moment it should be to realize the shale oil extraction in test mode.
Design of remnant pillar in mechanized depillaring using continuous miner
Authors: Chawla Shailendra , Jaiswal Ashok , Shrivastva B. K.
Published: July 2021

Ribs and snooks are the critical natural support at the goaf edge in the mechanized depillaring operation of the bord and pillar mining system. The pillar extraction has been carried out by taking the slices and leaving ribs and snooks during the depillaring operation. Remnants are the remaining portion of the extracted pillar. The depillaring operation leads to an unsupported roof, and the immediate unsupported roof imposes its weight on the pillar (remnant) under extraction. The remnant’s purpose is to provide a necessary reaction to the overhang to restrict roof failure until the pillar’s final slice. The remnant’s stability during depillaring operation has been accessed in the study using three-dimensional numerical simulations. A scheme has also been proposed in the study to evaluate the factor of safety (FOS*) of the remnant pillar in the residual phase at different stages of slicing operation. A case of an Indian coal mine using the fish-bone method has been chosen for the study. A typical depillaring stage has been selected for the extraction of the pillar using the fish-bone method. The numerical simulation of the considered panel provides the vertical stress and yielding profile on the pillars at different stages of depillaring. The simulation results show the influence zone up to one pillar from the goaf edge. The immediate intact pillar shows considerable yielding of about 60% of the pillar area. The remnants have completely yielded during the slicing operation but provide a reaction to the immediate strata. The remnant should provide the reaction to the immediate roof till taking the final slice from the pillar. The remnant’s FOS* is calculated by taking the ratio of reaction offered by the remnant (numerical simulations) and the weight of the overhang (estimation). The area’s borehole section shows two layers of medium to coarse-grained sandstone as an immediate stratum. The weight of the immediate strata has been estimated in the study considering the immediate strata’s thickness. Two different scenarios of immediate strata thickness (i.e., 4.75 m and 9 m) have been considered in the study to evaluate the remnant’s FOS at different depillaring stages.
Rheological behaviour of water based mud formulated with sodium hydroxide (NaOH) plant extracts
Authors: Chibuike Onyeogulu , Millicent Uzoamaka Ibezim-Ezeani , Onyewuchi Akaranta
Published: July 2021

The rheological behaviour of drilling mud formulated with sodium hydroxide extracts of Bitter-leaf (BL), Pawpaw (PL), Almond (AL) and Moringa (ML) leaves applied as surfactant (emulsifiers) was studied. The rheological properties (plastic viscosity (PV), yield point (YP), and gel strength) of the mud were measured using standard procedures. The mud specific gravity for BLEM and PLEM was observed to give same value (1.08) as that of the C1 mud. pH of the formulated mud were all alkaline and in the order BLEM (8.6) > PLEM (8.3) > ALEM (8.3) > C1(8.3) > MLEM (8.2) > C2 (8.2). The highest PV (19cP) was recorded by PLEM at 30ºC, while the least value (6cP) was by C2 at 60ºC temperatures. Highest YP (70 1b/100ft2) was recorded by C2 while the lowest YP value (22 1b/100ft2) by C1 both at 30ºC. Gel strength at 10 seconds showed reduction in value as the temperature increased for MLEM, ALEM, C2 and C1 formulated mud and recorded maximum of 45 1b/100 ft2 at 30ºC for C2 while the lowest gel strength was reported by C1 at 60ºC. The results obtained from the study showed that the various alkaline plant extracts used as emulsifying agent have no negative effect on the rheological properties of the formulated mud, rather it enhances the rheological properties even after aging of the mud at 65oC. These results therefore, show the need to use the various plant extracts as alternative additive (emulsifying agent) in the formulation of water based drilling mud.
If you have a computer, you have a little slice of Spruce Pine
Authors: Bhattacharya Jayanta
Published: July 2021

No Abstract.
Stope boundary optimization for an underground copper deposit using mixed integer linear programming based algorithm
Authors: Samanta Gopinath , Dey Tapan , Samanta Biswajit , Sinha Suranjan
Published: July 2021

Optimal ore body boundary and production area geometry (Stope) are essential to maximize the profit from an underground mining project subject to inherent physical, geotechnical and geological constraints. Number of researches have been introduced for stope boundary optimization but true optimal solution in three dimensional spaces is still out of reach. This article proposed a computer programming based optimization model using mixed integer linear programming based algorithm that incorporate stope boundary optimization with varying cost of mining and selling price of the metal. An actual ore body model was taken as case study to implement the algorithm in real mining scenario. In validation study, it is observed that, by using proposed model, the profit can be increased by 10% - 15% as compared to the present stoping practice. Simulating the optimal stope boundary by changing the various cost and price parameters helps to opt the best possible option for a given mining scenario to make most realistic plan.
Assessment of coal pillar stability using principal component analysis and stepwise selection and elimination
Authors: Kumar Brijesh , Paurush Punit , Sharma Sanjay K. , Prasad Singh Gauri S.
Published: July 2021

Prediction of pillar stability is one of the most critical tasks in underground mining industries. This pillar stability analysis requires many input parameters and some of them are difficult to be determined. Various statistical based analysis is presented in literature for assessing pillar stability successfully. In the present work, the data from three mines had been to determine the factor of safety. A total of 63 pillar cases had been collected from the mines. Principal component analysis (PCA) and Stepwise selection and elimination (SSE) models were developed by using multi variate linear regression (MLR) on 45 data sets and subsequently the proposed models were validated on 18 different data sets. The value of coefficient of determination (R2) is 0.86 and 0.84 for PCA and SSE respectively. The root mean square error for PCA and SSE are found to be 0.112 and 0.123 respectively. On validation of the proposed model developed by PCA and SSE, the PCA model provided a better validation results. Hence, PCA is recommended for modelling pillar stability.
An approach to assessment of post mining-induced seismic hazard in Kolar Gold Fields mines – a review
Authors: Das Jennifer Praveena , Porchelvan P.
Published: July 2021

A common challenge faced in underground hardrock mines worldwide is post mining-induced seismicity, as the events have been quite disastrous, causing risk to the structures and lives. In the recent years, many of the worked out mining areas are slowly getting populated and in due course of time shall be posing environmental threat to the people residing above and to the surface structures like sudden void formations or sudden ground collapse becoming visible on the surface. Worked out or closed mines have most of the time shown existence of post mining-induced seismicity signatures. Some of the closed mines showing post mining induced seismicity in Korea, South Africa, Sweden and India are being discussed. Post mining induced seismicity observed in Kolar Gold Fields worked out mine still being felt since closure of deeper levels is discussed. As mining depth increases especially in hard rock mines, magnitude of stress increases, hence, the occurrence and severity of postmining induced seismicity also increases. The problem becomes more serious if proper fund allocation is not done to investigate these areas, may be due to the absence of economic interest once the mine site has been abandoned and in many cases, direct investigations inside the mines may not be possible due to stability problems or due to the ingress of water into the void spaces of the mining area. Several approaches and techniques adopted by researcher’s world over are being discussed in this paper, with a view to gaining insight into the techniques of evaluation of seismic hazard. Seismic vulnerability assessment should integrate the effects of all the seismic events occurring at different locations of mining area during mining and post mining, along with their uncertainties also being considered. Based on the recorded data and some of the derived parameters from previous years, an attempt should be made to evaluate the existing risk prone areas. The past records of induced seismicity due to mining should be used as a precursor for identification of impending future events and their expected probable locations of occurrence. The methods discussed here for assessment of seismic hazard are based on direct waveform and seismic source parameters, parameters from indirect waveform methods, frequency-magnitude relationship based, and frequency content analysis based. From the assessment it is found that the choice of method that can be used depends on the period of monitoring (short-term monitoring, intermediate-term or long-term monitoring) and the objective of the study required to be achieved, this varies on site-to-site basis. The main focus is to show the importance and need to install a micro seismic monitoring system for long term assessment of seismic risk especially in abandoned/worked out mines showing post mining-induced seismicity.
How a mining equipment manufacturing company found its core competence and used it for growth
Authors: Bhattacharya Jayanta
Published: July 2021

No Abstract.
Research on determining reasonable negative pressure based on the control of the goaf
Authors: Yue-hong Wang , Yi Wu , Jiu-ling Zhang , Zhi Li
Published: July 2021

In order to study the law of spontaneous combustion in goaf under the condition of gas extraction, the method of beam tube monitoring and numerical analysis is adopted to obtain three dimensional distribution of oxygen concentration and contour map under the condition of different negative pressure. Based on the way of regression analysis, reasonable negative pressure are determined. The results show that with the increase of negative pressure, the spontaneous combustion “three-zone” in goaf: the heat dissipation zone and the spontaneous combustion zone become wider and the suffocation zone narrows. At the same time, the trend of spontaneous combustion zone presents to the deep part of the goaf; the amount of gas extraction increases first and then decreases with the increase of negative pressure. Combined with the trend of spontaneous combustion zone and the amount of gas extraction in goaf, and the reasonable negative pressure value is 32kpa and verified.
Study on the role of the accident statistics in the design of coal mine safety signs
Authors: Wei Jiang , Yuan-chi Xiang
Published: July 2021

Accident statistics is an important basis in designing coal mine safety signs. In this paper, we study the process and feasibility for accident statistics as the design basis of the coal mine enterprise safety signs. This paper comes into a conclusion of unsafe actions which cause the accident can be divided into two categories: illegal action and error action. Illegal action could be subdivided into habitual illegal action and accident illegal action, while error action could be subdivided action into skills, decisionmaking and physiological perceptual action. In this paper, we specifically analyze five coal mine accident cases as examples, in order to conclude unsafe actions and unsafe states in every case. Specifically, unsafe acts are: bolt pretightening does not reach the designated position, sitting on the belt, no remote operating point column, maintenance without power cuts and operating under pressure. In addition, these unsafe acts lead to relative unsafe states, which are insufficient bolt pressure, point column instability, machine charging electricity and hydraulic pipe under pressure? Finally, these unsafe states become causations of accidents. Based on statistical analysis, we found out illegal actions of coal mine accident cases and specifically designed five safety signs, which are ‘bolt must be preloaded in place’, ‘be careful of the column’, ‘ban to sit on belts’, ‘forbidden pressing operation’ and ‘maintenance must be power outages’.
Reliability evaluation for colliery machine based on fuzzy interval model
Authors: Yang Li , Chen Chuang
Published: July 2021

The mechanical reliability design method is a common method, and it is the most direct and effective method to carry out the mechanical reliability design at present. The reliability optimization design is an effective optimization design method which is developed in combination with the reliability design theory on the basis of the conventional optimization design. Taking the antifriction bearing as an example, this paper systematically expounds all kinds of mechanical reliability design methods. Through comprehensive analysis of various factors that affect the reliability of colliery machine, the index system of colliery machine reliability evaluation is established. Because of the complexity and diversity of the use of colliery machine in the evaluation system, and the fuzziness of human thinking, it is difficult to give the deterministic evaluation information in numerical form, so this paper also analyzes the design method of colliery mechanical reliability, and puts forward an interval fuzzy evaluation method for colliery mechanical reliability evaluation to avoid overload operation of colliery machine and ensure safety production and safety of workers. The simulation results show that the inherent law of reliability is effectively characterized by this method, and it provides a evidence for security produce and scientific decision-making of colliery mechine.
Predictive control of Si content in blast furnace smelting based on improved SA-BP
Authors: Liu Wenhan , Wang Hongli , Shi Liye
Published: July 2021

Blast furnace smelting process is a highly complex nonlinear dynamic process, its purpose is to refining the quality of liquid iron. From the point of view of chemical reaction kinetics, the main chemical reactions in the blast furnace are as many as 108 kinds, and the high complexity is obvious. From the point of view of hydrodynamics, there are three-phase mixed compressible viscous fluids in the blast furnace smelting process. The hydrodynamic equation is nonlinear, high-dimensional and high-coupling. In addition, the blast furnace smelting process has the characteristics of time-varying, high-dimensional, distributed parameters and other characteristics of the complex conditions and the failure of the operation under the conditions of the test, making the blast furnace smelting process automation and furnace temperature precision control to become metallurgical workers face the problem. In this study, from the data point of view, to explore the furnace temperature can be characterized by [Si] content prediction. Based on the data of 1000 furnace blast furnace, an accurate and reasonable prediction model of Si content in blast furnace is established. First of all, through the calculation of correlation coefficients of various factors and the time trend diagram, the general lag time between each parameter and Si content in the process of blast furnace production is obtained. Through correlation and analysis of the correlation between lag time, before and after the two largest furnace, with improved simulated annealing algorithm to determine the optimal initial weights, the content of Si, the N furnace of S content, the quantity of coal and air PML FL as input, the contents of Si in n+1 furnace as output to establish dynamic prediction model of improved SA-BP neural network based. Finally, the data used to detect the model is brought into the model to be tested, the error is analyzed, and the error local map is used to express the error visually. The model is tested.
Rebeldes com causa: a juventude como agente de mudança social numa perspectiva histórica europeia
Authors: Cruz Elena , Pereira Cláudia
Published: July 2021

A relação estabelecida entre as ideias de juventude e de mudança social pode apresentar uma percepção de “naturalidade” para o senso comum. No entanto, ao adentar a trajetória da juventude como construção social, nota-se uma disputa por seu reconhecimento como parte legítima da vida em sociedade. Movimentos políticos, sociais e culturais favoreceram, advertida ou inadvertidamente, o surgimento do jovem como um ator social, visto pelo contexto europeu, a partir do século XIX. Para tanto, são tomados como referência textos de David Le Breton, Philippe Ariès, Jon Savage, Edgar Morin e Luis Antonio Groppo, entre outros autores, que nos ajudam a compreender os percursos da noção de juventude ao longo do tempo. Esse artigo evidencia o entendimento do jovem como um problema social, articulado com suas representações nas esferas públicas e, por outro lado, destaca a juventude como um rico objeto de estudo sociológico à luz dos meios de comunicação. A juventude se trata, portanto, de uma categoria de pensamento em permanente construção, sujeita a transformações sócio-histórico-culturais, em diferentes contextos.
Transdisciplinariedad decolonial de la Educación Matemática
Authors: Rodriguez Milagros Elena
Published: July 2021

La transdisciplinariedad no siempre es decolonial, ha tenido rezagos modernistas, postmodernistas y de allí coloniales. Desde el proyecto transmodernista, el transparadigma transcomplejo se cumple con el objetivo complejo de analizar la transdisciplinariedad decolonial en la Educación Matemática Decolonial Transcompleja. Se trata de una indagación transmetódica con el uso del transmétodo: la deconstrucción rizomática transcompleja en la transmodernidad. En la reconstrucción de la investigación como conclusiones de aperturas: la transdisciplinariedad como decolonialidad la Educación Matemática Decolonial Transcompleja cobra preeminencia en los niveles de realidad decoloniales, la decolonialidad de las disciplinas, la complejidad converge para investigar mediante transmétodos que profundizan la realidad, su multireferencialidad y maneras de manifestarse. Se motivan a diversas investigaciones enmarcadas en la línea de investigación: Educación Matemática Decolonial Transcompleja donde el re-ligaje, des-ligando primeramente, es una esencia transmodernista.
Comprometimento vascular periférico em pacientes diabéticos: fatores etiológicos e manifestações clínicas
Authors: Moraes da Silva Lorrany Fontenele , Nogueira Ferreira Adriana Gomes , Pereira Ana Lúcia Fernandes , Pascoal Lívia Maia , Neto Marcelino Santos , Dutra Richard Pereira
Published: July 2021

Introdução: A avaliação da perfusão periférica é fundamental para o manejo de pacientes diabéticos, com o intuito de detectar os riscos de amputações e a evolução da cicatrização de feridas Objetivo: Identificar os fatores etiológicos e manifestações clínicas que caracterizam o comprometimento vascular periférico em pacientes diabéticos. Metodologia: Desenvolveu-se uma revisão integrativa em maio de 2019 utilizando as seguintes bases de dados BDENF, CINAHL, LILACS, MEDLINE e PUBMED com os descritores angiopatias diabéticas, diabetes mellitus, pé diabético nos idiomas inglês e português. A amostra foi constituída por 18 artigos. Os fatores etiológicos mais frequentes foram Doença arterial periférica (DAP), tempo de evolução do diabetes, neuropatia periférica, idade avançada e tabagismo. Sobre as manifestações clínicas, apresentaram maior frequência baixo Índice Tornozelo-braquial (ITB), baixo Índice Hálux-braquial (IHB), ausência de pulsos periféricos e retardo na cicatrização. Conclusão: A DAP foi mais evidente e considerada a principal causa de acometimento vascular, verificou-se que o ITB não é uma técnica segura para avaliar a perfusão periférica em pacientes diabéticos e esta deve ser realizada em concomitância ao IHB, alternativa mais confiável. Portanto, é fundamental os profissionais de saúde rastrearem os fatores etiológicos e manifestações clínicas para realizarem uma atenção direcionada para essa população de risco.
Implementation of marriage itsbat in Aceh
Authors: Mubarak Aulia , Adli M. , Jauhari Iman
Published: July 2021

This paper describes the process of marriage itsbat in Aceh and its approval factors despite its non-compliance with the applicable provisions. From the study results, it is known that the judge determining marriage itsbat prioritized benefit (maslahah) for the litigants. Its approval is considered to have more positive impacts, both for the litigants and their children. When it is granted, their marriage has had legal force and is recognized by the state, with the result that the litigants and their children have the same rights as those who register their marriage. This study used empirical legal research method obtained by conducting interviews. For further suggestion, it is expected that the government give legal socialization to increase public awareness of the importance of marriage registration
The accuracy of online-based prayer times applications
Authors: Rojak Encep Abdul
Published: July 2021

There are various types of prayer times that Muslims refer to on a daily basis. Specifically, there are offline and online prayer times as well as traditional and modern prayer times. Online prayer times that can be accessed from a mobile phone in forms such as android-based applications, online websites, and Google applications. The purpose of this study is to investigate the accuracy of online-based prayer times applications and seek for the possible consistency across these applications. This study employs a qualitative approach and a descriptive data analysis. The data collection is conducted through observations, literature study, and in-depth interviews. This study indicates different degree of deviations among online-based prayer times applications, in which Google applications show the most deviation among the others. This study suggests that Muslims refer to online applications recommended by the Ministry of Religious Affairs of Indonesia.