bluuebunny/crossref_metadata_2025 huggingface dataset:
A practical, long-term production scheduling model in open pit mines using integer linear programming
Authors: Gholamnejad J. , Lotfian R. , Kasmaeeyazdi S.
Published: August 2021

SYNOPSIS Long-term production scheduling is a major step in open pit mine planning and design. It aims to maximize the net present value (NPV) of the cash flows from a mining project while satisfying all the operational constraints, such as grade blending, ore production, mining capacity, and pit slope during each scheduling period. Long-term plans not only determine the cash flow generated over the mine life, but are also the basis for medium- and short-term production scheduling. Mathematical programming methods, such as linear programming, mixed integer linear programming, dynamic programming, and graph theory, have shown to be well suited for optimization of mine production scheduling. However, the long-term plans generated by the mathematical formulations mostly create a scattered block extraction order on several benches that cannot be implemented in practice. The reason is the excessive movement of mining equipment between benches in a single scheduling period. In this paper, an alternative integer linear programming (ILP) formulation is presented for long-term production scheduling that reduced the number of active benches in any scheduling period. Numerical results of the proposed model on a small-scale open pit gold mine show a 34% reduction in the average number of working benches in a given scheduling period. Keywords: long-term production scheduling, mathematical programming, practical plans, equipment movements.
InDrop Library Preparation - TruDrop (modified V2) Detailed v1
Authors: Southard-Smith Austin , J Simmons Alan , Lau Ken
Published: August 2021

This protocol details the library preparation process of dual-indexed, NovaSeq-compatible, single-cell RNA-Seq libraries from the inDrop V2 platform. The final library structure combines the TruSeq sequencing primers and indices from standard illumina libraries with the inDrop V2 library features such as the cell barcodes, unique molecular identifier, and transcript. As such it is referred to TruSeq-inDrop (TruDrop).
Dissociation of fresh colorectal biopsies v1
Authors: J Simmons Alan , Lau Ken
Published: August 2021

Current procedures for the dissociation of intestinal biopsies (<50mg)
SOEM-X: Identifying non-healthcare industries for SARS-CoV-2 exposure in the United States (Extreme Variant) v2
Authors: Walsh Michael
Published: August 2021

This protocol describes a way to identify non-healthcare industries in the United States based on the following operational definition: Any industry that does not exceed the upper boundary limit set by the third quartile plus 3 times the interquartile range for the percentage of workers employed in healthcare occupations as defined in the Epidemiological Classification of COVID-19 Work-Relatedness and Documentation of Public-Facing Occupations of the Council of State and Territorial Epidemiologists Occupational Health Subcommittee. Note, this protocol extends the SARS-CoV-2 Occupational Exposure Matrix (SOEM). It exploits the fact that the SOEM does not capture risk factors of exposure to SARS-CoV-2 across all occupations in the United States: The SOEM excludes healthcare occupations as defined in the Epidemiological Classification of COVID-19 Work-Relatedness and Documentation of Public-Facing Occupations of the Council of State and Territorial Epidemiologists Occupational Health Subcommittee. Note further, this protocol is a variant of "SOEM-X: Identifying non-healthcare industries for SARS-CoV-2 exposure in the United States." The key distinction is that this protocol sets boundary limits for extreme outliers rather than normal outliers.
SOEM-X: Identifying non-healthcare industries for SARS-CoV-2 exposure in the United States v1
Authors: Walsh Michael
Published: August 2021

This protocol describes a way to identify non-healthcare industries in the United States based on the following operational definition: Any industry that does not exceed the upper boundary limit set by the third quartile plus 1.5 times the interquartile range for number of workers employed in healthcare occupations as defined in the Epidemiological Classification of COVID-19 Work-Relatedness and Documentation of Public-Facing Occupations of the Council of State and Territorial Epidemiologists Occupational Health Subcommittee. Note, this protocol extends the SARS-CoV-2 Occupational Exposure Matrix (SOEM). It exploits the fact that the SOEM does not capture risk factors of exposure to SARS-CoV-2 across all occupations in the United States: The SOEM excludes healthcare occupations as defined in the Epidemiological Classification of COVID-19 Work-Relatedness and Documentation of Public-Facing Occupations of the Council of State and Territorial Epidemiologists Occupational Health Subcommittee.
Research on the Impact of Customer Perceived Value of Remanufactured Products on Purchase Intention
Authors:   Department of Economics and Management, China University of Geosciences, Lu Mo Road, Wuhan, China, Zhang Qi , Hou Yue
Published: August 2021

Remanufacturing is an environmentally-friendly and energy-saving production concept and manufacturing technology, but it is low in China's consumer level. Therefore, it is especially important to explore the factors that Chinese consumers purchase remanufactured products. This paper uses empirical methods to analyze the impact of perceived value on the purchase intention of remanufactured products and the adjustment of consumer psychological variables. Studies have shown that: (1) the lack of perceived gains and the exaggeration of perceived gains and losses have a negative impact on purchase intention. (2) The degree of price sensitivity and risk avoidance play a regulatory role between perceived value and purchase intention. The higher the price sensitivity and risk aversion, the more obvious the effect of perceived profit on purchasing intention. Finally, management proposals for the development of the remanufacturing market have been proposed for governments and remanufacturing companies.
Significance of histopathology in the evaluation of paucibacillary leprosy
Authors: N Sindhushree , C Sindhu , SV Sunita
Published: August 2021

Background: Leprosy patients are classified into paucibacillary and multibacillary types on the basis of the number of skin lesions for the purpose of therapy. Patients with 1–5 skin lesions are clinically categorized as paucibacillary for treatment purposes. Aim: To study paucibacillary leprosy cases and compare clinical details with histopathological findings. Materials and methods: Three and half year study involving 130 patients of paucibacillary cases of leprosy diagnosed clinically and based on the 1–5 skin lesions was included in this study after ethical clearance and taking informed consent from patients. A number of skin lesions were recorded. Skin biopsies were taken in all patients. Biopsies were evaluated for the type of pathology and acid fast bacilli (AFB) status. Results: Of 130 patients, 81(62.3%) were males and 49(37.6%) were females. Majority of the clinically classified cases were borderline tuberculoid leprosy. The histological diagnoses were: TT 19(14.6%), BT 40(30.7%), IL 51(39.2%) and No evidence of leprosy 20(15.3%). AFB were found in 3(15.3%) out of 130 skin biopsies and all were borderline tuberculoid leprosy. Conclusion: Tissue diagnosis play a significant role in the diagnosis of leprosy. Early and borderline cases of leprosy poses a diagnostic difficulty to label only on clinical basis, so histopathological evaluation is must for confirming the diagnosis in doubtful cases of leprosy.
Comparative study of long segment versus short segment posterior fixation of thoracolumbar fractures with pedicle screws
Authors: SJ Vihar , DS Naveen , NK Agrawal
Published: August 2021

Choice of long or short segment fixation for thoracolumbar fractures, benefits of either of these techniques has been a topic for analysis and assessment. Kyphotic angles in twenty patients diagnosed to have thoracolumbar vertebral fractures between December 2019 to December 2020 in Bapuji hospital and Chigateri general hospital, Davanagere, Karnataka, India were measured pre operatively, post operatively and at one year follow up and assessed. No statistical difference between the degrees of correction of initial kyphotic angle between long segment fixation and short segment posterior fixation in our study was found (p<0.6). Method of fixation of the thoracolumbar vertebral fracture did not correlate with initial degree of kyphosis (p=0.4). Amount of correction loss at one year follow up was found to be statistically significant in short segment fixation (p<0.05). Loss of kyphotic angle at one year follow up was higher in case of short segment fixation than long segment fixation and found to be statistically significant (p<0.005). Our study showed that long segment fixation helps in better correction of the kyphosis angle with lesser chance of loss of correction and can be opted when pedicles aren’t intact at the fracture level, as in cases of burst fractures. Short segment fixation provides better rigid fixation at the site of fracture with increased range of motion at the thoracolumbar segment and can be treatment of choice when the pedicles at the fractured level are intact, as in cases of compression fractures, having benefits of shorter duration of surgery and reduced risks.
Unusual presentations of ‘‘left ventricular non compaction’’- A rare form of cardiomyopathy
Authors: S Maheen , MJ Srikala
Published: August 2021

Left ventricular non-compaction is an overall rare form of non-ischemic cardiomyopathy. The true prevalence of left ventricular non compaction (LVNC) is unclear, but it has been reported in 0.014–0.05% of adults and even less in paediatric population [1]. We present the case series of the patients who presented with varied clinical presentation and diagnosed to have left ventricular non-compaction on imaging. We have reviewed the literature regarding diagnostic imaging criteria and imaging pitfalls of this condition.
Factores asociados a la no utilización de servicios de salud en personas LGBTI de Perú
Authors: Romani Luccio , Ladera-Porta Katerine , Quiñones-Laveriano Dante M. , Rios-Garcia Wagner , Juarez-Ubillus Alejandro , Vilchez-Cornejo Jennifer
Published: August 2021

Objetivo: Determinar los factores asociados a la no utilización de servicios de salud en una muestra de la población de lesbianas, gais, bisexuales, transgénero e intersexuales (LGBTI) de Perú. Materiales y métodos: Estudio transversal analítico, análisis de datos secundarios de la Primera Encuesta LGBTI de Perú. Se tomó como variable de interés a las personas que tuvieron alguna enfermedad durante los últimos doce meses y que tuvieron que recibir atención médica. Se calcularon razones de prevalencias crudas (RPc) y ajustadas (RPa), con intervalos de confianza al 95 % (IC 95 %), usando regresiones de Poisson con varianza robusta. Se desarrollaron tres modelos, ajustados a variables agrupadas en correspondencia con la orientación sexual, identidad de género e intersexualidad, respectivamente. Resultados: El 55,4 % fueron registrados como varones al nacer, la mediana de la edad fue 25 años (Rango intercuartil: 21-30). El 16 % manifestó no haber buscado atención médica. Los tres modelos presentaron una asociación negativa respecto de padecer una enfermedad crónica, enfermedad infectocontagiosa, enfermedad mental y en quienes expresaban su orientación abiertamente. El no ser respetados por el género con el que se identificaban estuvo relacionado a no usar los servicios en el modelo 3. Los modelos 1 y 3, incluyeron una asociación positiva con no ser respetados con el género que se identifica. Conclusión: Padecer de alguna enfermedad mental, una enfermedad infectocontagiosa y una enfermedad crónica además de no ser tratado con respeto según el género con el que se identifica son factores asociados a la no utilización de los servicios de salud.
Encefalitis letal por amebas de vida libre en tres miembros de una familia, Tumbes, Perú
Authors: Solís-Castro María Edith
Published: August 2021

Las amebas de vida libre (AVL) son parásitos protozoarios que ocasionalmente causan enfermedad en humanos luego del contacto con alguna fuente de agua o suelo contaminado. Se describe una serie de tres casos de encefalitis con desenlace fatal en un grupo familiar que tuvo lugar en el departamento de Tumbes entre diciembre de 2019 y febrero de 2020. En la muestra de líquido cefalorraquídeo del primer caso se identificó Acanthamoeba sp. Los tres casos presentaron como antecedente la exposición a piscina meses antes de la enfermedad. En Tumbes no hay registro previo de casos de encefalitis por AVL y no se han reportado a nivel mundial su ocurrencia en un conglomerado familiar.
Primer caso de reinfección confirmada por SARS-CoV-2 en el Perú
Authors: Pampa-Espinoza Luis , García María , Gavilán Ronnie G. , Donaires Luis , Cabezas César , Rojas Nancy , Palomino Miryam , Huaringa Maribel , Rios Pamela , Gonzales-Valdez Hilda , Solari Lely
Published: August 2021

-
Otoimmün hepatit tanılı hastada azatioprin tedavisi sonrası gelişen Kaposi sarkomu
Authors: ÇAĞLAR Tuğçe , ABİYEV Azar , ERDEM Özlem , KEKİLLİ Murat , DOĞAN İbrahim
Published: August 2021

Kaposi sarkomu, insan herpes virüsü-8 ile ilişkili mezenkimal bir neoplazmdır. Genellikle birincil veya ikincil immün yetmezliği olan hastalarda bulunur. Azatioprin gibi immünomodülatör ilaçlar otoimmün hepatit hastalığında etkilidir, ancak bunların kullanımı toksisite endişeleri nedeniyle sınırlıdır. Burada, otoimmün hepatit hastalığı için azatioprin tedavisi alan ve sonrasında Kaposi sarkomu gelişen, insan immün yetmezlik virüsü negatif bir olguyu sunuyoruz.
Energetic and exergetic performance comparison of an experimental automotive air conditioning system using refrigerants R1234yf and R134a
Authors: ALKAN Alpaslan , KOLIP Ahmet , HOSOZ Murat
Published: August 2021

In this study, the energetic and exergetic performance merits of an automotive air condition-ing (AAC) system using R134a and R1234yf have been investigated. For this aim, a laboratory AAC system was developed and equipped with devices for mechanical measurements. The refrigeration circuit of the system mainly had an evaporator, condenser, liquid receiver, fixed capacity compressor, and thermostatic expansion valve. The tests were performed by changing the compressor speed and air stream temperatures incoming the condenser and evaporator. Based on energy and exergy analysis, various performance parameters of the AAC system for both refrigerants were determined and presented in comparative graphics. It was found that R1234yf resulted in 0.4–10.9% lower refrigeration capacity, 5.5–11.6% lower COP, and 4.7–16.1°C lower compressor discharge temperature, while yielding 9.3–22.3% higher refrig-erant mass flow rate and 1.1–3.5°C higher conditioned airstream temperature in comparison to R134a. Moreover, the components of the R1234yf system usually destructed more exergy, and the total exergy destruction rate per unit refrigeration capacity of the R1234yf system was 4.1–15.3% greater than that of the R134a one.
Towards the Implementation of Monetary Management in Islamic Economic System Based on Recent Developments
Authors: Hassan Mohammad Kabir , Shah Muhammad Abdul Rehman , Alazhari Manzoor Ahmad , Selim Mohammad
Published: August 2021

Monetary management is an essential part of the objectives of Shari’ah under the umbrella of the preservation of wealth (Ma’al). Our primary sources: Qur’an and Sunn’ah, provide divine legislation on the prohibition of Riba to manage bases of monetary transaction. Further, the juristic tools facilitate scholars to propose solutions to meet the emerging issues on diversified aspects of society. Muslim scholars have always adapted and contributed to the Islamic finance system and regulation, theoretically and practically. In recent decades, Islamic banking and finance has seen strong momentum with double digit growth, fulfilling the monetary requirement of depositors on the liability side along with industry on the asset side. We seek to review the theoretical and empirical literature on Islamic monetary mangement. Monetary management in the Islamic economic context is still an area that needs more research. This paper examines how literature has been developed over time up until modern Islamic economic and banking practices. The findings suggest that Islamic monetary management has been gradually developed in recent years and such development is remarkable steps forward in pursuing Islamic monetary policy independently. In addition, Islamic monetary policy is proved to be relatively more effective compared to interest based conventional monetary policy. The implications of such findings have established new milestones for the central banks of all the countries, including the muslim majority countries for pursuing interest free Islamic monetary policy with full confidence.  Furthermore, there are four major views on Islamic monetary policy and the central banks of the world should choose one of the best methods and views for the greater effectiveness of monetary policy because conventional monetary policy has been less effective in bringing full employment and price stability in recent years and financial crisis has crippled the interest based conventional economic systems quite badly.
Assessment of the Service Performance of Zakah Institutions in Gombe Metropolis, Nigeria
Authors: Sulaiman Sagir Muhammad , Magaji Mohammed , Rabiu Warshu Tijjani
Published: August 2021

Zakah is an important tool in Islamic economic system, it plays a crucial role in reducing some social and economic problems such as poverty, unemployment, indebtedness and inequitable redistribution of income in the Muslim communities. The Zakah institutions in Gombe metropolis are said to practice favouritism and unfair service quality and distribution of Zakah funds among recipients. The main objective of this study is to empirically examine perception of the Zakah recipients towards the services provided by the institutions. This study adopted descriptive survey design approach. PLS-SEM is employed to test the hypothesized model of the study. The result reveals that reliability, responsiveness and assurance significantly affect performance of Zakah institutions but tangibility and empathy were found to be insignificant. The study recommends the need for Zakah institutions in Gombe metropolis to consider improving the tangibles and empathy dimensions of service quality. The study also recommends the need to concentrate on the antecedents of service quality as it will assist Zakah institutions to improve performance. Lastly, the study suggests the establishment of Zakah board that will serve as regulatory body in charge of supervising the activities of private  Zakah institutions in Gombe state.
Assessment of parenting skills of parents having children with psychiatric disorders attending psychiatry unit
Authors: Sharma Renu , Sharma Sunita , Sharma Akhilesh
Published: August 2021

Parenting is defined as a process of promotion of the physical, social, emotional, financial and intellectual development of a child till adulthood. But parenting a child with mental health issues can be difficult and stressful for parents. So, therefore this study was conducted to know about the parenting skills of parents having children with psychiatric disorders. A descriptive study was conducted in psychiatry unit of PGIMER, Chandigarh for which 40 parents were selected who were having children with psychiatric illness and attending psychiatry unit. The obtained data was statistically analyzed by SPSS-20 version. Main findings showed that50% of the subjects exhibits good parenting skills, 47.5% have average parenting skills and only 2.5% of subjects have negligent parenting. The study concluded that parent- child gap is evident in parents who take care of their child.
New viral hepatitis caused by covid-19 virus- A case report
Authors: Gobbur R H , M Ranjima , S Akki Aravind
Published: August 2021

During the current COVID-19 pandemic, the assessment, and management of patients are challenging. The clinical features of COVID-19 are heterogeneous and subtle in many cases. Although diffuse alveolar damage and acute respiratory failure are the main features of COVID-19, the impairment of other organs are also seen. Gastrointestinal symptoms are common in pediatric patients with COVID-19 as SARS-CoV-2 is able to enter gastrointestinal epithelial cells. However, these complaints can also be caused by a COVID-19-independent concomitant abdominal pathology. Therefore, patients with fever with acute abdominal pain, anorexia, nausea, vomiting and diarrhea need to be assessed very thoroughly. Previous studies reported that COVID-19 was likely to result in liver injury. Based on clinical cases, we present our approach of management of children with symptoms and signs of viral hepatitis and concomitant suspicion of ­COVID-19.
Isolated gallbladder perforation in paediatric blunt abdominal injury: A case report and review of literature
Authors: Neogi Sujoy , Banerjee Arka , S Panda Shasanka , K Ratan Simmi
Published: August 2021

Gallbladder injury in blunt abdominal trauma is rare, around 2% of all abdominal traumas. Vague symptoms and inconclusive imaging make it an elusive diagnosis, more so in children. Only 30 pediatric cases have been reported worldwide till date. We report a case of a 7yrs old boy presenting 2 weeks after a road accident with a gallbladder rupture which was eventually discovered on a diagnostic laparoscopy. This is the second such case being reported from India. The injury is most often identified at exploration and although cholecystectomy is the preferred treatment, there are occasions when the gallbladder may be left in situ. The classification system of Losanoff and Kjossev has merit in guiding treatment. The various presentations, mechanisms and modes of injury have been highlighted along with the clinical and imaging findings. Despite the developments in modern radiology, identifying gallbladder perforation has always been difficult because of the rarity of the condition. In a child with blunt abdominal trauma and intra-abdominal free fluid without any solid organ injury, a diagnostic peritoneal tap may be helpful. Based on the current evidence, we advocate a low threshold for performing a diagnostic laparoscopy in all such cases.
Achieving Sustainable Recovery: Criteria for Evaluating the Sustainability and Effectiveness of Covid-19 Recovery Investments in Latin America and the Caribbean
Authors: Watkins Graham , Breton Hervé , Edwards Guy
Published: August 2021

The Covid-19 pandemic has precipitated unprecedented health, social and economic crises across the countries of Latin America and the Caribbean. All countries in the region moved quickly to implement rescue policies to safeguard lives and livelihoods. The rescue phase continues along with the challenge of orchestrating the post-COVID-19 economic recovery: designing packages of investments and initiatives to stimulate employment, liquidity, reignite sustainable and inclusive economic growth and transition towards net-zero emission and climate-resilience economies to confront the worsening climate and ecological crisis. These policies must be sustainable in the short and long term and bring institutional, social, economic/financial, and environmental co-benefits. This working paper proposes criteria for evaluating the sustainability of recovery investments and initiatives, to serve as a checklist for stakeholders to use to ensure a recovery that builds an inclusive, sustainable and resilient future for all.
Cost Analysis of Maxillofacial Trauma in Shiraz Shahid Rajayee Hospital
Authors: Aliabadi Ehsan , Jalali Nima
Published: August 2021

Introduction: Accidents are one of the most important cause of morbidity and mortality in different societies. One of the prevalent complications of crash and other accidents is maxillofacial fractures which in addition to abundant difficulties for patients has a high burden for health system of countries. So the aim of this study was analytical evaluation of financial burden of maxillofacial trauma with respect to demographic variables, therefore the costs of maxillofacial traumas were evaluated in Shiraz.
Materials & Methods: In this cross-sectional study, records of 200 patients hospitalized for maxillofacial trauma in Shiraz Shahid Rajayee hospital during 2018 to 2019 were evaluated. Costs of different parts of treatment, trauma mechanisms in addition to demographic characteristics (age and gender) were recorded for each patient. Data analysis was carried out by descriptive analysis.
Results: Of total of 200 patients were hospitalized due to the maxillofacial injuries, 40 (20 %) were female and 160 (80%) were male. The age average was 39.9 years. The most common cause of trauma was crashes (81.5%). In average, 89272763 Rials was spent for each patient.
Conclusion: Results of the current study demonstrated that a huge budget is spent each year for accident patients whom have maxillofacial fractures.
Etiology of soybean (Glycine max) leaf spot in Sinaloa, Mexico
Authors: González-Molotla Iris Alejandrina , Félix-Gastélum Rubén , Leyva-Madrigal Karla Yeriana , Quiroz-Figueroa Francisco Roberto , Maldonado-Mendoza Ignacio Eduardo
Published: August 2021

La soya es una de las leguminosas más importantes en el mundo. En años recientes en el norte de Sinaloa se ha observado incidencia de mancha foliar en la etapa de llenado de grano e inicio de la madurez. El objetivo del presente trabajo fue identificar el agente causal de esta enfermedad. Se colectaron muestras de foliolos sintomáticos en ocho lotes comerciales de soya, de los cuales se obtuvieron ocho aislados fúngicos, y se identificaron morfológica y molecularmente. Se realizaron pruebas de patogenicidad en plantas de soya var. Nainari y se confirmaron los postulados de Koch, mediante el reaislamiento de los aislados originales. Los análisis morfológicos determinaron al género Curvularia asociado a la mancha foliar de la soya. El análisis filogenético del gen gadph permitió la identificación de Curvularia ahvazensis, C. muehlenbeckiae, C. spicifera y Curvularia sp. Estas especies resultaron patogénicas en soya var. Nainari mostrando variación en virulencia, pues el área foliar afectada varió de 3 a 31%. Los resultados abren nuevas líneas de investigación relacionadas con el impacto de la enfermedad en el rendimiento y calidad de la cosecha de la soya en Sinaloa.
Elementos identitarios indígenas desde la autogestión comunitaria en tiempos de la pandemia de COVID-19: los jóvenes shipibos voluntarios del Comando Matico
Authors: Balvín Bellido Sandra
Published: August 2021

Frente a las muchas pérdidas humanas que trae consigo la emergencia sanitaria causada por la COVID-19 y el abandono estatal, un grupo de jóvenes shipibos y mestizos de Yarinacocha - Pucallpa, formaron un colectivo voluntario denominado Comando Matico; para enfrentar dicha emergencia a base de medicina ancestral shipiba. Estos jóvenes deciden actuar a pesar de las restricciones estatales, motivados por un carácter solidario que parece ser de raíz antigua entre los shipibos. El presente artículo, explora la construcción identitaria del grupo; que realiza una serie de prácticas de convocatoria para obtener el apoyo de la comunidad virtual a su labor voluntaria y de demanda ciudadana al Estado, entremezcladas y sostenidas en formas de auto representaciones particulares en el espacio virtual de Facebook. Esta construcción con fines prácticos en la virtualidad (orientada, como veníamos mencionando, a la autogestión indígena) está íntimamente vinculada al proceso de construcción identitaria offline. El contexto pandémico, es propicio para una renovación de la puesta en práctica de los conocimientos ancestrales shipibos; así como, para los jóvenes voluntarios que retoman la búsqueda del reconocimiento de su herencia ancestral, alimentando el mencionado proceso de construcción identitaria al mismo tiempo que fortalece la búsqueda de autonomía indígena –al menos en lo que respecta al ámbito de la salud.
​Synthesis, Characterization and Safety Assessment of Nano Selenium and Organic Selenium for Incorporation in Lamb Feed
Authors: Vajpeyee S.S. , Ramesh J. , Karunakaran R. , Muralidharan J. , Sankar V.
Published: August 2021

Background: Selenium is an important trace mineral required by the animals. It is an integral part of antioxidant system, protecting the body against free radical injury. Nano particles attract a widespread attention due to its high bioavailability and efficacy. The current study was aimed to synthesize, characterize nano selenium and evaluate the cytotoxic effect of nano selenium and organic selenium (selenocysteine) under in vitro condition in vero cell line. Methods: Nano selenium was synthesized by wet chemical method by using sodium selenite, selenium powder, ascorbic acid and sodium hydroxide at laboratory level. In this study particle size, shape, zeta potential and selenium content were characterized by using Particle Size Analyser (PSA), Transmission Electron Microscope (TEM) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The toxicity was analysed by MTT assay against vero cell line. Result: The result revealed that selenium nano particles were spherical in shape, nano in size (less than 50 nm) and pure in nature. The nano selenium and organic selenium (selenocysteine) effectively inhibited the growth of vero cells in a dose dependent manner.
The Ussing Chamber System: Functioning and Determination of Intestinal Transepithelial Electrical Measurements and Intestinal Integrity in Broiler Chickens
Authors: Suganthi R. Umaya , Malik P.K. , Reddy G.B. Manjunatha
Published: August 2021

Background: The epithelial barrier integrity reflects gut health in broiler chickens and impaired intestinal barrier is associated with production losses. So, the present report was undertaken to determine the transepithelial electrical measurements and intestinal integrity of intestinal tissues in broilers from retail shops in Bangalore, India using an Ussing chamber system. Methods: For the present study, commercial broiler chickens were purchased from registered retail meat shops, sacrificed and the intestinal tissues were collected. The transepithelial electrical voltage, short circuit current and transepithelial electrical resistance were measured in jejunum using a contemporary Ussing chamber system following methodologies as detailed in the manuscript. Result: The studied intestinal tissues exhibited transepithelial electrical movements across intestine and the integrity of intestinal tissues were maintained. The study also indicated the preservation of intestinal barrier integrity of broilers at the crucial destination of the live broiler chicken market which in turn ascertains the quality of the product offered to the customers.
​Comparative Studies on Therapeutic Efficacy Intrauterine Turmeric Extract and Ceftiofur Sodium Alone and in Combination with Micronutrients Supplementation in Postpartum Metritic Crossbred Cows
Authors: Kumar Rajender , Nema Sant Prasad , Mahour Sobaran Sing , Patil Ashok Kumar , Shivhare Madhu , . Vinita
Published: August 2021

Background: The postpartum period is crucial in dairy cows and is marked by major physiological and metabolic changes that affect milk production, immune response and fertility. Nutrition remains the most important lever for limiting the negative energy balance and its consequences on general health status in highly selected dairy cows. Therefore, the present study is design to investigate the Therapeutic efficacy intrauterine turmeric extract and ceftiofur sodium alone and in combination with micronutrients supplementation in postpartum metritic crossbred cows. Methods: The present study was conducted on 24 crossbred cows with history of postpartum metritis randomly divided into four treatment groups: intrauterine turmeric extract (group I), intramuscular ceftiofur sodium (group II), intrauterine turmeric extract + micronutrient supplementation (group III) and intramuscular ceftiofur sodium + micronutrient supplementation (group IV). Result: The mean time interval required for resumption of cyclicity was highest in gp II followed by gp I, gp III and gp IV. The group turmeric extract + micronutrients supplementation and ceftiofur sodium + micronutrients supplementation group registered a considerable higher conception rate (66.66) followed by (50%) in turmeric extract and ceftiofur sodium group.
​Influence of Temperature and Salinity Stress on Seed Germination and Seedling Growth of Soybean (Glycine max L.)
Authors: Çirka Mustafa , Kaya Ali Rahmi , Eryiğit Tamer
Published: August 2021

Background: The high salt level of a germinating environment can lead to reduced, delayed, and even complete inhibition of germination and seeding growth due to osmotic action and/or ion toxicity. Based on this viewpoint, the aim of this study was to investigate germination temperature and salinity effects on germination and early seedling growth of soybean, which can be sown as first and second crops. Methods: Soybean seeds were subjected to NaCl induced saline germinating media prepared in petri dishes under two different germination temperatures (20±2 and 25±2oC). Thirty sterilized seeds per petri dish were sown in ten salt treatments (0, 100, 150, 250, 750, 1000, 2250, 5000, 7500 and 10000 ppm NaCl L-1). The study was carried out according to the completely randomized design with four replications. Result: Lower temperature promoted seed germination, while the high temperature significantly inhibited the seed germination at all NaCl doses tested. As a result, 25oC temperatures, which can only be measured at the time of the second sowing, have been found to negatively affect germination and also increase the negative effects of salt. Due to the moderate tolerance of soybeans to salt stress, the germination rate was positively affected up to 750 ppm NaCl L-1 dose and resulted in severe reductions in subsequent doses. Also, the tolerance of soybean was negatively influenced by the interaction of temperature and NaCl concentration.
​The Effect of Rhizobacteria in the Reducing drought Stress in Soybean (Glycine max L.)
Authors: Oral E. , Tunçtürk R. , Tunçtürk M.
Published: August 2021

Background: This study was carried out to determine the effects of rhizobacteria and blue green algae applications on some physiological properties of soybean (Glycina max L.) grown under water stress. Methods: The experiment was conducted in factorial order with 4 replications according to the randomized plot trial design. In the research, Arýsoy variety belonging to soybean (Glycine max L.) species was used. In the experiment, it was aimed to examine the effects of three different irrigation levels (100, 50 and 25%) on some physiological characteristics of soybean with a control (control (B0), two different bacteria used. In this study, strains R1 of Azospirillum lipoferum bacteria, strains numbered 98 belonging to Bacillus megaterium bacteriaein and one blue green algae (Chlorella saccharophilia) were used. Result: According to the average data obtained, root length is 24.75 cm- 30.85 cm, seedling length 28.10-36.57 cm, root fresh weight 1.10-1.43 g, seedling wet weight 1.55-2.41 g, root dry weight 0.15-0.18 g, seedling dry weight 0.38-0.46 g, azote balance index 70.64-82.90 (dualex value), flavonol 0.375-0.398 (dualex value) and anthocyanin 0.016-0.045 (dualex value), with water restriction showed a decrease in most of these values. It has been determined that the rhizobacteria and blue-green algae have a decreasing and regulating effect on the physiological properties examined.
Thai undergraduate digital citizenship skills education: A second-order confirmatory factor analysis
Authors: Ruenphongphun Prarichart , Sukkamart Aukkapong , Pimdee Paitoon
Published: August 2021

From the study’s initial qualitative analysis, 10 latent variables and 22 indicators concerning digital citizenship skills (DCS) were used in a questionnaire on a sample of 506 Thai Business Computer Programme undergraduate students attending one of six regional Thai Rajabhat Universities. Goodness-of-fit and descriptive statistical analysis [mean, standard deviation, Kaiser–Meyer–Olkin index analysis and Bartlett’s test of sphericity were analysed by using SPSS® for Windows Version 21 and LISREL 9.10 for the second-order confirmatory factor analysis CFA. The results revealed that each student’s opinion on their DCSs had a ‘high agreement’ level. Moreover, importance ranking from high to low of the 10 primary indicators was each student’s footprint (1.00), cyberbullying (1.00), law (0.97), access (0.88), security (0.84), literacy (0.83), empathy (0.81), etiquette (0.80), collaboration (0.70) and thinking (0.65). Therefore, it is suggested that this study’s results be used to assist various agencies and ministries in building programmes for student digital citizenship skills.

 

Keywords: Digital skills education; student cyberbullying; student digital footprints; teaching digital literacy; Thailand
Attitudes of preservice teachers having pedagogical formation certificate training towards instructional technology and material design course
Authors: Oz Recep , Kayalar Murat Tolga
Published: August 2021

The purpose of this study was to determine the attitudes of the trainees registered in Pedagogical Formation Certificate Program (PFCP) towards the Instructional Technologies and Material Design (ITMD) course and to analyze whether these attitudes differed according to gender, department and level of grade. The data were obtained from totally 110 trainees including 78 females and 38 males. In addition to the personal information form, the Attitude Scale towards ITMD Course was used as the data collection tool. The scale had three sub-dimensions as effectiveness, admiration and denial, and the internal consistency coefficients calculated for the current implementation were between .99 and .77. It was understood that the trainees regarded the ITMD course effective enough to be considered good, admired the course at a moderate level, and did not neglect the course very much. It was noticed that female trainees found the course more effective and admired it more rather than the male trainees. The trainees in the English group were determined to consider ITMD course more effective than the trainees in the philosophy group. Moreover, it was proved that the students in the English group admired more rather than the trainees in the theology and philosophy groups. The graduate trainees regarded ITMD course more effective than the ones who were still students.

 

Keywords: instructional technologies, information technologies, instructional technologies and material design, attitude towards itmd course;
Criteria of subjectivity of master’s students instructional technology and education degree program
Authors: Maratovna Sovetkanova Damira , Nurlanbekovna Umirbekova Akerke , Ismailbekovna Shalabayeva Laura , Askarovna Butabayeva Laura , Armysovna Kulmysheva Nazym , Yuryevna Sarsembayeva Ella
Published: August 2021

The source of the prospects for the development of an independent state is the education of younger generation. The globalizing world requires particular attention and responsibility in nurture the young generation. That is why the secularism of the education system is a blessing and a necessity. This article discusses the achievements and new challenges in the field of education over the years of independence of the Republic of Kazakhstan.The article presents questions of the criteria and indicators for identifying and studying the subjectivity of future masters. The article analyzes the diversity and multifunctionality of the phenomenon of subjectivity in the context of an interdisciplinary approach. The strategic and practical directions for the development of the student's subjectivity in the educational process of the university are characterized on the basis of highlighting plans for the social and professional life of a future specialist in an education situation.

 

Keywords: subject, subjectivity, subject-oriented approach, Master’s degree program, Master’s degree student, criteria, indicators;
Evaluation of oral speech of Students with hearing impairments with perspectives of special learning technologies
Authors: Aigerim Chulembayeva , Nursultanovna Autayeva Akbota , Askarovna Butabayeva Laura , Kapalova S.K. , Sikinbayev B.B. , Genc Zeynep
Published: August 2021

In recent years, much attention has been paid to the problem of language and correct pronunciation in the native language when working with the younger generation, including the formation of oral speech in children with hearing impairments with perspectives of special learning technologies, which formed the basis for our research work. Theoretically, the effective methods in shaping the oral skills of students with hearing impairments imply the provision of opportunities for their further successful socialization, unlimited communication with the outside world, and personality formation. In order to tackle the problem, we have identified the problem of testing methods and determining the level of formation of oral speech of students with hearing impairment, offering special methods, techniques for its improvement. In the course of implementation, diagnostic studies, quantitative and qualitative analysis of indicators, practical implementation of the methodology, and various practical works were carried out.

 

Keywords: Learning technologies, oral speech, children, hearing impairment, Kazakh language
El cine, una estrategia para desarrollar habilidades del pensamiento crítico en sociales
Authors: Morantes Cepeda Sandra Liliana , Gordillo Ávila Yasmín
Published: August 2021

El trabajo “El cine, una estrategia para desarrollar habilidades del pensamiento crítico en sociales” parte de una problemática encontrada en los estudiantes de los grados primero (109) y segundo (207) de la Sede Manitas de la Institución Educativa Politécnico Álvaro González Santana (IEPAGS) de la ciudad de Sogamoso, en la que se pudo observar que, en su aprendizaje cotidiano, no desarrollaban las habilidades de pensamiento crítico, como son: comprensión, interpretación y proposición. Con el fin de mejorar estas dificultades, se utilizaron diversas estrategias didáctico-pedagógicas, a través del cine, que permitieron desarrollar en ellos dichas habilidades. Esta investigación, se enmarcó en la metodología de investigación acción, con un enfoque cualitativo, que definió la ruta a seguir, en tres fases: diagnóstica, intervención y análisis e interpretación, facilitando en los estudiantes la recordación, contextualización y el fortalecimiento de su expresión escrita y oral sobre temas de Ciencias Sociales.
El Juego Dramático. Una Estrategia para Mejorar La Expresión Oral
Authors: Soler Guerrero Gloria Isabel , López Vargas Leidy Yanet , Duarte Acero Jorge Enrique
Published: August 2021

Este artículo reseña los resultados de una investigación desarrollada en la Institución Educativa Técnica Agropecuaria San Rafael del municipio de Rondón (Boyacá) en las sedes Granada Oriente y Páramo; mediante un trabajo reflexivo, a partir de un diagnóstico realizado mediante la aplicación de entrevistas y observación directa, evidenciando escaso dominio del lenguaje verbal y gestual utilizado en procesos comunicativos. Esta investigación es de tipo acción, conenfoque de corte cualitativo, teniendo como objetivo evaluar los cambios presentados en la expresión oral con la implementación del juego dramáticocomo estrategia didáctica en los estudiantes de grado segundo; estructuradas en tres fases: primera; identificar el problema y diseño de talleres; segunda; aplicación de talleres; tercera; análisis y evaluación de resultados. La metodología planteada; muestra resultados en cuanto al tono de voz, incremento del vocabulario y expresiones corporales en situaciones comunicativas. Evidencia un progreso significativo en la expresión oral de la población objeto de estudio.
Uso del mapa conceptual como estrategia didáctica para mejorar la comprensión lectora
Authors: Toro Soler Cecilia , Cepeda Cepeda Consuelo Esperanza , Gil Sánchez Luz Esperanza
Published: August 2021

Este artículo tiene como objetivo describir el contexto educativo de la comprensión lectora de los estudiantes de 3º y 4º grado de la I. E. SergioCamargo (Municipio de Miraflores). Se pretende demostrar el efecto que existe entre el uso de los mapas conceptuales y el mejoramiento en la comprensiónlectora. Mediante la metodología cualitativa, con un enfoque crítico social y un diseño basado en la investigación acción, se puede encontrar que el primer personaje pedagógico que estimula a los estudiantes en emular ideas y formas de la comprensión lectora, es el docente, dando ejemplos y organizando los ejercicios, de tal modo que si este agente principal no encuentra estrategias adecuadas para mejorar el proceso de comprensión lectora sino que lo hace de una manera monótona, implícitamente hace de la lectura y la comprensión lectora un deber y una obligación para los niños, leer de este modo genera una disminución en el interés propio y autónomo por parte de los estudiantes, además que dificulta en los educandos la posibilidad de que ellos plasmen sus propias ideas. En este sentido, la utilización de los mapas conceptuales como estrategia influye en la comprensión lectora y ayuda a mejorar en el rendimiento académico de manera positiva, pronosticando el éxito de los estudiantes.
Un dispositivo pedagógico desde la ruralidad para el desarrollo de competencias básicas
Authors: Chinchilla Villate Yennifer Maritza , Mongui Naranjo Carlos Alberto , Sarabanda Barrera Andrés Fernando , Pérez Martínez Ana Mercedes
Published: August 2021

En este artículo se exponen los resultados de una estrategia encaminada al desarrollo de competencias básicas, empleando aspectos novedosos queinvolucran los saberes escolares propios del contexto rural. Se establecieron relaciones de saberes y poderes tanto de los docentes como de los estudiantes, que permitieron una mejor comunicación y aprendizajes significativos mutuos, aportaron elementos valiosos que contribuyeron al logro del objetivo. El artículo expone la creación e implementación de un dispositivo pedagógico dirigido a los estudiantes de grado octavo de la Institución Educativa Marco Antonio Quijano Rico del sector rural del Municipio de Sogamoso; mediante la metodología “investigación - acción” se unificaron procesos aparentementeindependientes que permitieron la reflexión y superación de problemáticas propias del aula en contextos particulares y significativos para los estudiantes, estrategia que puede ser aplicada en contextos semejantes. Palabras clave: dispositivo pedagógico, competencia, educación, ruralidad, contexto
El cuento de las matemáticas
Authors: Hernández Pacheco Diana Margarita , Hernández Moreno Martha Leidy , Leguizamón Romero José Francisco
Published: August 2021

En el documento se presenta los resultados de la investigación que tenía como objetivo desarrollar la comprensión lectora en el aula de matemáticas, a través del cuento, en el grado décimo A de la Institución Educativa Magdalena de Sogamoso. Se emplearon los niveles de comprensión lectora expuestos por Barret (1968): Literal, inferencial, crítico y apreciativo, adaptados hacia las matemáticas, utilizando el cuento como mediación, recurso y estrategia. Este proyecto investigativo tuvo un enfoque cualitativo, con la metodología de la investigación acción. Los instrumentos empleados para la recolección de datos fueron pruebas documentales (diagnóstica, intermedia y final), y diarios de campo. Los resultados evidenciaron que, al utilizar el cuento como recurso, el estudiante logró comprender lo que se le preguntaba, relacionar los temas que ya conocía con los nuevos, que el texto le presentaba, realizar razonamientos matemáticos y, por último, usó la temática aprendida en los diferentes contextos para dar solución a situaciones problema planteadas.