bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamic Image Analysis to Determine Granule Size and Shape, for Selected High Shear Granulation Process Parameters
Authors: Oliver Macho , Matúš Čierny , Ľudmila Gabrišová , Martin Juriga , Radovan Ružinský , Peter Peciar 
Published: April 2020

Abstract
The aim of this study was to investigate the usage of Dynamic Image Analysis for determination of size, shape and distribution of granules of microcrystalline cellulose, created by high shear granulation. A series of experiments was carried out to analyse the effect of process parameters on a created granule morphology. The amount of the granulation liquid and speed of the impeller have a significant effect on the median size granule value, the sphericity, the granule distribution width, but also on the granulation process yield.
Grey-WPCA Based Parametric-Optimization and Modelling of Chromium Powder Mixed Surface-Electro Discharge Diamond Grinding of Inconel 600 Using RSM
Authors: Modi Manoj , Agarwal Gopal , Chaugaonkar Swati D 
Published: April 2020

Abstract
The PMS-EDDG is an effective hybrid process to beat the problems identified in machining of Inconel 600 through the conventional machining process. This hybrid-machining-process is a combination of SDG and Powder Mixed-EDM process. Modeling, comparative investigation, determination of optimal setting of process factors, and various surface developments in S-EDDG of Inconel 600 with chromium and absence of chromium-powder blended dielectric fluid (DF) have been narrated in this research work. One set of 31 experiments with chromium-powder and another set of 31 experiments without chromium-powder mixed DF was conducted on this set-up in accordance with the C-C-R-D plan of experimentation. The developed models through RSM support to investigate the behavior of input process-factors over the responses. The input factors in this research work are ampere-current (I), pulse-on-time (Ton), wheel speed (WS), and duty cycle (DC). The MRR and Ra are the output-responses in this machining process. The optimum setting of process-parameters is computed through the integrated Grey-Taguchi based WPCA-approach. The confirmation experiment is conducted on this set-up at the optimum-condition and its results display the agreeable matching among the actual and predicted values. The WMPI is improved by 0.414. The SEM investigation has been conducted at the optimum-condition on the produced machined-surfaces and on the produced white recast-layer thickness.
Newsletter Spring 2020: Clinician Investigator Trainee Association of Canada (CITAC)
Authors: Marvasti Tina B. , Pietrobon Adam 
Published: April 2020

Message from Tina Marvasti, President of the Clinician Investigator Trainee Association of Canada: National and international collaborations and evidence based advocacy for the Canadian MD/PhD and MD+ trainees

The overarching goals of the Clinician Investigator Trainee Association of Canada (CITAC) for 2020 are to expand its reach to increase membership and to continue to build strong relationships with our national and international partners. These goals will be achieved by applying the following three strategies:

Continue to develop and strengthen our relationships with national and international key partners and with stake holders
Better understand the needs of clinician-scientist trainees for evidence-based advocacy
Increase membership, improve communication with all members and highlight the
accomplishments of trainees
Uso de imagens tomadas por aronaves remotamente pilotadas para detecção da cultura do milho infestadas por Spodoptera frugiperda
Authors: Rezende Denner Borges , Junior Carlos Alberto Matias de Abreu , Martins George Deroco , Marques Odair José , Xavier Laura Cristina Moura 
Published: April 2020

A Spodoptera frugiperda (Smith) (lagarta-do-cartucho) é a principal praga do milho, com a intensificação da agricultura, os cultivos sucessivos possibilitam maior infestação pela praga. Isso levou ao surgimento de populações resistentes a inseticidas e culturas transgênicas. Pesquisas de campo para iniciar tratamentos com inseticidas são demoradas e exaustivas. Pensando em agilidade e qualidade, neste trabalho foi utilizado uma aeronave remotamente pilotada (ARP) equipado com uma câmera RGB e uma câmera MAPPIR 3 para capturar imagens de uma lavoura de milho, com o objetivo de estimar o índice de área foliar (IAF) de um talhão infestado por S. frugiperda. Durante o ciclo da cultura do milho foram realizadas várias avaliações: determinação do índice de área foliar (IAF), severidade do ataque da praga e, voos para aquisição das imagens. Modelos radiométricos para estimativa do IAF foram obtidos a partir de modelos de regressão linear compostos pelas bandas que melhor correlacionaram com os parâmetros medidos. Os resultados obtidos demonstraram eficiência e maior precisão na estimativa do IAF para o modelo radiométrico composto pela a banda do infravermelho próximo na câmera MAPPIR 3. Nesta ocasião, o RMSE calculado foi de 885,0714 cm². Use of images for attack detection of Spodoptera frugiperda in corn under function of loss of foliar area A B S T R A C TSpodoptera frugiperda (Smith) (cartridge-caterpillar) is the main pest of maize, with the intensification of agriculture, the successive crops allow greater infestation by the pest. This has led to the emergence of populations resistant to insecticides and transgenic crops. Field research to begin treatments with insecticides is time consuming and exhaustive. Thus, thinking of agility and quality, in this work was used a remotely piloted aircraft (ARP) equipped with an RGB camera and a MAPPIR 3 camera to capture images of a maize crop with the objective of estimating the leaf area index (LAI) of a field infested by S. frugiperda. The radiometric models for the estimation of LAI were obtained from linear regression models composed by the bands that best correlated with the measured parameters. The obtained results demonstrated efficiency and greater accuracy in the estimation of the LAI for the radiometric model composed by the near infrared band (IVP) in the MAPPIR 3 camera. On this occasion, the RMSE calculated was 885.0714 cm².Keywords: Corn; Cartridge Caterpillar; Remotely Piloted Aircraft.
Análise de tendência das componentes do saldo de radiação e número de horas de frio em Cruz Alta - RS
Authors: Da Rocha Júnior Rodrigo Lins , Dos Santos Silva Fabrício Daniel , Costa Rafaela Lisboa , Gomes Heliofábio Barros , De Oliveira Romão William Max 
Published: April 2020

Esta pesquisa avaliou as tendências balanço de ondas curtas (BOC) e balanço de ondas longas (BOL) e do saldo de radiação (SR), para relacionar com a tendência observada do número de horas de frio (NHF) para a cidade de Cruz Alta-RS, a partir de dados horários da estação meteorológica automática do Instituto Nacional de Meteorologia. O período analisado foi de 2010 a 2018. As análises foram relativas aos períodos das estações do ano, e para obtenção das tendências foi utilizado o teste não paramétrico de Mann-Kendall. O BOC e o BOL apresentaram tendências positivas no inverno e primavera, e negativas no verão e outono. O SR apresentou tendências negativas no outono, inverno e primavera, e positiva no verão. Não foram observada horas de frio no verão. No outono houve a tendência de aumento estatisticamente significante do NHF, enquanto no inverno e primavera as tendências foram de redução do NHF, com significância estatística no inverno. A tendência de redução de -1,4 horas de frio no inverno é preocupante, pois esta é a estação do ano para o acúmulo natural de NHF para diversas culturas, e anos com NHF reduzido estão associados aos piores índices de produtividade destas culturas. Trend analysis of the radiation balance components and number of cold hours in Cruz Alta-RS A B S T R A C TThis research evaluated the shortwave balance (BOC), longwave balance (BOL) and net radiation (SR) trends to correlate with the observed trend of chill hours (NHF) for the city of Cruz Alta-RS. Hourly data from the INMET automatic weather station were used from 2010 to 2018. The analyzes were relative to the seasons, and to obtain the trends, the nonparametric Mann-Kendall test was used. BOC and BOL showed positive trends in winter and negative trends in summer and fall. SR showed negative trends in fall, spring and summer, and positive trends in winter. No cold hours were observed in summer. In the fall there was a trend of statistically significant increase in NHF, while in winter and spring the trends were in NHF reduction, with statistical significance in winter. The tendency to reduce -1.39 chill hours in winter and -0.11 chill hours in spring may be associated with a significant reduction in cold front passage and cold air masses in southern Brazil in the last years of analysis. These results need attention, as it is mainly in winter that natural accumulation of NHF should occur for several crops. In general, years with reduced NHF are associated with worse crop yields that need to accumulate chili hours.Keywords: radiation, temperature, agriculture.
Numerical Modelling of Waves and Surge from Cyclone Mekunu (May 2018) in the Arabian Sea
Authors: Sarker M. A. 
Published: April 2020

Natural hazards like cyclones cause significant loss of life and damage to properties, ecosystems and marine structures and facilities. Numerical modelling of cyclones is carried out for deriving robust design conditions for coastal and marine structures and facilities. Cyclone modelling results are also used for emergency planning and decision-making to estimate potential loss of life, damage to properties and marine facilities and to develop rescue and mitigation measures and plan clean-up operations. Royal HaskoningDHV (RHDHV) has set up regional tidal hydrodynamic and wave transformation models covering the Arabian Sea to address the above issues. Cyclone Mekunu is relatively new (May 2018). A quick literature search by Royal HaskoningDHV has suggested that numerical modelling results of waves and surge on Cyclone Mekunu are hardly available in the public domain. Therefore, this paper has concentrated on this event to illustrate the use of numerical modelling to simulate waves and surge generated by cyclones. The MIKE21 model of DHI was used in the study. Sample results of waves and surge from the modelling study are presented in this paper for illustration purposes. Structural design considerations and cyclone risk reduction measures are also provided. The model could be used to simulate any cyclone generated anywhere within the Arabian Sea. The methodology described in this paper for modelling cyclone waves and surge in the Arabian Sea could also be applied to simulate cyclones at other sites around the world. The paper provides valuable information to the researchers and practitioners of the region on this relatively new event.
Efficient synthesis of porous graphitic carbon nitride nanosheets with different precursors via thermal condensation
Authors: Hu Xuebing , Hu Yan , Zhang Qing , Yu Yun , Wang Yongqing 
Published: April 2020

Abstract
Porous graphitic carbon nitride nanosheets were synthesized by the thermal condensation method using various precursors such as urea and melamine. Relevant properties of as-synthesized products were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and differential thermal analysis (DTA). The overall results suggest that the formation of porous graphitic carbon nitride nanosheets with a varied morphology can be achieved using diverse precursors through this process. Based on this product yield analysis, it is suggested that melamine and the lower synthesis temperature be selected to achieve the higher yield of graphitic carbon nitride production. The present work provides a facile and economic method for controlling the morphology and properties of graphitic carbon nitride products.
Optimal design of automobile structures using moth-flame optimization algorithm and response surface methodology
Authors: Yıldız Betül Sultan 
Published: April 2020

Abstract
In order to present an integrated approach to optimal automobile component design, this research is focused on a shape optimization problem of a bracket using moth-flame optimization algorithm (MFO) and response surface methodology. First, the multiple disc clutch brake problem is optimized using the MFO. Finally, the design problem is posed for shape optimization of the bracket with a mass objective function and a stress constraint. Actual function evaluations are based on finite element analysis while the response surface method is used to obtain the equations for objective and constraint functions. Weight reduction of the bracket is 45.2 % using the MFO. The results show the ability of the MFO to optimize automobile components in the industry.
The spotted hyena optimization algorithm for weight-reduction of automobile brake components
Authors: Yıldız Betül Sultan 
Published: April 2020

Abstract
In recent years, metaheuristic methods have been preferred for the optimum design of automobile components, and important results have been accomplished. In this paper, a comparison of the whale optimization algorithm (WOA), the ant lion algorithm(ALO), and the spotted hyena optimization algorithm (SHOA) are presented to show how these optimization methods have been exploited to achieve weight reduction in an automobile brake pedal while maintaining stress requirements. This research is the first in the literature elucidating the application of the SHOA for the optimum design of automobile components. Optimization using the SHOA results in a reduction of 18.1 % of brake pedal weight.
Electrical contact performance of various electro-deposited graphene reinforced silver-based nanocomposites
Authors: Karslioglu Ramazan , Al-Falahi Lujain 
Published: April 2020

Abstract
Silver and silver(Ag)-graphene(Gr) nanocomposite coatings were prepared via direct current, pulse current and pulse reverse current on copper electrical contacts for evaluating electrical contact performance. The effects of the addition of Gr and current types on microstructure, crystallographic orientation, mechanical properties and electrical contact performance were investigataed via a scanning electron microscope, an X-Ray diffractometer, microhardness test device and an electrical contact test device, respectively. The addition of Gr changed the Ag surface morphology and decreased grain sizes. Moreover, the addition of Gr significantly improved arc erosion resistivity and decreased the average working temperature during the contact test. In addition, pulse current and pulse reverse current provided a significant improvement in microhardness and electrical contact erosion resistance owing to increased embedded graphene amounts in silver layers.
ЕПІСТОЛЯРНА СПАДЩИНА ІЛЛІ ЕРЕНБУРГА ТА ПРОБЛЕМА (НЕ)ПОВЕРНЕННЯ ЕВАКУЙОВАНИХ ЄВРЕЇВ КАЛІНІНДОРФА (КАЛІНІНСЬКОГО) ПІСЛЯ ГОЛОКОСТУ
Authors: Kaparulin Yurii 
Published: April 2020

Публікацію присвячено проблемі повернення евакуйованих та мобілізованих євреїв-аграріїв Півдня України після Голокосту. У цьому контексті значний інтерес становить епістолярна спадщина радянського культурного діяча Іллі Еренбурга, зокрема його листування з мешканцями та партійними службовцями Херсонщини. Історичне тло періоду відзначається як час початку хвилі урядового та побутового антисемітизму в СРСР, що остаточно звів нанівець перспективу відновлення та розвитку єврейської аграрної громади в регіоні. До уваги читачів пропонуються раніше неопубліковані документи з фондів Державного архіву Херсонської області, що відображають труднощі, з якими зіткнулися євреї с. Калінінського (до 1944 р. Калініндорф) після повернення з евакуації наприкінці Другої світової війни.
Stem Cells Regenerative Properties on New Rat Spinal Fusion Model
Authors: KLÍMA K. , VANĚČEK V. , KOHOUT A. , JIROUŠEK O. , FOLTÁN R. , ŠTULÍK J. , MACHOŇ V. , PAVLÍKOVÁ G. , JENDELOVÁ P. , SYKOVÁ E. , ŠEDÝ J. 
Published: April 2020

Stem cells biology is one of the most frequent topic of physiological research of today. Spinal fusion represents common bone biology challenge. It is the indicator of osteoinduction and new bone formation on ectopic model. The purpose of this study was to establish a simple model of spinal fusion based on a rat model including verification of the possible use of titanium microplates with hydroxyapatite scaffold combined with human bone marrow-derived mesenchymal stem cells (MSCs). Spinous processes of two adjacent vertebrae were fixed in 15 Wistar rats. The space between bony vertebral arches and spinous processes was either filled with augmentation material only and covered with a resorbable collagen membrane (Group 1), or filled with augmentation material loaded with 5 × 106 MSCs and covered with a resorbable collagen membrane (Group 2). The rats were sacrificed 8 weeks after the surgery. Histology, histomorphometry and micro-CT were performed. The new model of interspinous fusion was safe, easy, inexpensive, with zero mortality. We did not detect any substantial pathological changes or tumor formation after graft implantation. We observed a nonsignificant effect on the formation of new bone tissue between Group 1 and Group 2. In the group with MSCs (Group 2) we described minor inflamatory response which indicates the imunomodulational and antiinflamatory role of MSCs. In conclusion, this new model proved to be easy to use in small animals like rats.
Intrapulmonary Activation of the Angiotensin-Converting Enzyme Type 2/Angiotensin 1-7/G-Protein-Coupled Mas Receptor Axis Attenuates Pulmonary Hypertension in Ren-2 Transgenic Rats Exposed to Chronic Hypoxia
Authors: HAMPL V. , HERGET J. , BÍBOVÁ J. , BAŇASOVÁ A. , HUSKOVÁ Z. , VAŇOURKOVÁ Z. , JÍCHOVÁ Š. , KUJAL P. , VERNEROVÁ Z. , SADOWSKI J. , ČERVENKA L. 
Published: April 2020

The present study was performed to evaluate the role of intrapulmonary activity of the two axes of the renin-angiotensin system (RAS): vasoconstrictor angiotensin-converting enzyme (ACE)/angiotensin II (ANG II)/ANG II type 1 receptor (AT1) axis, and vasodilator ACE type 2 (ACE2)/angiotensin 1-7 (ANG 1-7)/Mas receptor axis, in the development of hypoxic pulmonary hypertension in Ren-2 transgenic rats (TGR). Transgene-negative Hannover Sprague-Dawley (HanSD) rats served as controls. Both TGR and HanSD rats responded to two weeks´ exposure to hypoxia with a significant increase in mean pulmonary arterial pressure (MPAP), however, the increase was much less pronounced in the former. The attenuation of hypoxic pulmonary hypertension in TGR as compared to HanSD rats was associated with inhibition of ACE gene expression and activity, inhibition of AT1 receptor gene expression and suppression of ANG II levels in lung tissue. Simultaneously, there was an increase in lung ACE2 gene expression and activity and, in particular, ANG 1-7 concentrations and Mas receptor gene expression. We propose that a combination of suppression of ACE/ANG II/AT1 receptor axis and activation of ACE2/ANG 1-7/Mas receptor axis of the RAS in the lung tissue is the main mechanism explaining attenuation of hypoxic pulmonary hypertension in TGR as compared with HanSD rats.
Kelola Bumi Peduli Ekologi Menurut Kej 1:28
Authors: Surip Stanislaus 
Published: April 2020

Gen. 1:28 presents the three blessings of God to humans in the form procreation, natural subdue and rule over creatures. These three blessings must be placed in the context of human creation as image and likeness of God (Gen. 1:26-27) so that he becomes his co-worker in cultivating nature and pastoring all His creatures (Gen. 1:28). It was on this purpose that God placed humans in the garden of Eden and gave the task of cultivating and maintaining them (Gen. 2:4-8,15). The Sabbath of God, which became a crown of His creative work, was explored as a model for humans to carry out their missionary work (Gen. 2:1-3). As God rests after six days of work, man must know the limits in cultivating nature and mastering other creatures so as to avoid exploitative greed. The catastrophe of the Flood was the impact of the failure of humans to become partners with God and the presence of the figur of Noah reveals symbolically efforts to preserve the environment or care fo the ecology (Gen. 6-9). The ark that Noah made was like a house, a place to protect and care for all living creatures and their existence was threatened with extinction. Gen. 1:26-28; 2:1-3; 2:4-8,15 and Gen. 6-9 inspire us to care about ecology.
Kej 1:28 memaparkan tiga berkat Allah kepada manusia yang berupa prokreasi, penaklukan alam dan penguasaan makhluk-makhluk ciptaan lainnya. Ketiga berkat itu harus ditempatkan pada konteks penciptaan manusia sebagai gambar dan rupa Allah (Kej 1:26-27) sehingga menjadi rekan kerja-Nya dalam mengolah alam dan menggembalakan segenap makhluk ciptaan-Nya (Kej 1:28). Atas tujuan inilah Allah menempatkan manusia di taman Eden dan memberi tugas mengusahakan dan memeliharanya (Kej 2:4-8,15). Sabat Allah yang menjadi mahkota karya penciptaan-Nya pun dieksplor sebagai model bagi manusia dalam menjalani karya misinya (Kej 2:1-3). Sebagaimana Allah beristirahat setelah enam hari berkarya demikianlah manusia harus tahu batas dalam mengolah alam dan menguasai makhluk ciptaan lainnya sehingga terhindar dari kerakusan yang eksploitatif. Malapetaka Air Bah adalah dampak dari gagalnya manusia menjadi rekan kerja Allah dan kehadiran figur Nuh menyingkapkan secara simbolis upaya pemeliharaan lingkungan atau peduli ekologi (Kej 6-9). Bahtera yang dibuat Nuh ibarat sebuah rumah, tempat perlindungan dan pemeliharaan segala makhluk yang hidup dan keberadaannya terancam kemusnahan. Kej 1:26-28; 2:1-3; 2:4-8,15 dan Kej 6-9 menginspirasi kita untuk peduli ekologi.
Pengujian Organoleptik Produk Yogurt dengan Penambahan Variasi Konsentrasi Daun Kelor (Moringa oleifera)
Authors: Aznury Martha , Zaman Zaman , Zikri Ahmad , Panzurli Panzurli 
Published: April 2020

Penelitian ini bertujuan untuk mengetahui berapa persentase penambahan tepung daun kelor dan lama waktu fermentasi untuk menghasilkan yogurt yang berkualitas. Pada pembuatan yogurt ini memvariasikan konsentrasi penambahan tepung daun kelor dan lama waktu fermentasi selama 14 dan 16 jam. Bahan baku yang digunakan adalah susu UHT dengan variasi yang sama untuk semua sampel, sedangkan variasi penambahan tepung daun kelor sebanyak 0, 2, 4, 6 dan 8 gram. Pada pembuatan yogurt ini dilakukan uji organoleptik untuk mengetahui tingkat kesukaan konsumen terhadap penambahan tepung daun kelor yang paling tepat agar dihasilkan formula yogurt daun kelor yang paling baik. Pilihan pada B1 (kontrol), B2 (disukai) dan B5 (tidak disukai).