bluuebunny/crossref_metadata_2025 huggingface dataset:
Cold cathode electron emission with ultralow turn-on fields from Au-nanoparticle-decorated self-organized Si nanofacets
Authors: Saini Mahesh , Singh Ranveer , Sooraj K. P. , Basu Tanmoy , Roy Abhijit , Satpati Biswarup , Srivastava Sanjeev Kumar , Ranjan Mukesh , Som Tapobrata
Published: October 2020

Fabrication of highly dense conical nanostructures and their subsequent controlled metallization make them ideal candidates for enhancing cold cathode electron emission efficiency.
Optical control of Er3+-doped M0.5Bi2.5Nb2O9 (M = Li, Na, K) materials for thermal stability and temperature sensing using photochromic reactions
Authors: Li Xuefeng , Guan Lili , Li Yong , Sun Haiqin , Zhang Qiwei , Hao Xihong
Published: October 2020

Thermal stability and temperature sensing of Er3+-doped M0.5Bi2.5Nb2O9 (M = Li, Na, K) upconversion materials can be effectively modulated using photochromic reactions.
Screening of key genes related to the prognosis of mouse sepsis
Authors: Chen Muhu , Chen Xue , Hu Yingchun , Cai Xianfu
Published: October 2020

Sepsis is a common clinical disease with high mortality, and patients with sepsis have varied prognoses. Researchers need to explore the underlying mechanisms that determine the prognosis of sepsis. Hence, a mouse model was used to evaluate new potential prognostic markers of sepsis. Mice were randomly divided into low-dose group (n=3, lipopolysaccharides [LPS], 20 mg/kg) and high-dose group (n=3; LPS, 40 mg/kg). Total RNA was extracted from the peripheral blood of mice, and samples were then subjected to RNA sequencing. When complete data were normalized, the high-dose group and low-dose group were screened for differentially expressed genes (DEGs, log2FC ≥ 1 and q value ≤ 0.05). DEGs were analyzed by gene ontology enrichment, and potential core genes were screened using protein–protein interaction (PPI) network and weighted gene co-expression network analysis (WGCNA). Moreover, the survival data in GSE65682 were used to observe the correlation between core genes and prognosis. A total of 967 DEGs were identified in the low-dose group, of which 390 were up-regulated and 577 were down-regulated. These genes were mainly enriched in white blood cell activation, lymphocyte activation, immune system response etc. LCK, ZAP70, ITK, CD247, and DOCK2 were found at the core of PPI network, while WGCNA found that interferon-inducible protein 35 (IFI35), ITGB3, and mediator complex subunit 25 (MED25) may be potential core genes. It was demonstrated that CD247, DOCK2, IFI35, ITK, and LCK core genes were positively correlated with prognosis based on GSE65682. CD247, DOCK2, IFI35, ITK, LCK, and MED25 might be important targets affecting the prognosis of sepsis.
Évaluation quantitative du risque rocheux : de la formalisation à l’application sur les zones urbanisées ou urbanisables
Authors: Farvacque Manon , Eckert Nicolas , Bourrier Franck , Corona Christophe , Lopez-Saez Jérôme , Toe David
Published: October 2020

Les chutes de blocs représentent un aléa majeur dans les zones montagneuses, menaçant infrastructures collectives, zones urbanisées et vies humaines. Les conséquences de ces événements peuvent être importantes pour les collectivités locales ainsi que les pouvoirs publics, qui restent démunis en matière de méthode de diagnostic et d’analyse du risque. Dans ce contexte, l’évaluation du risque rocheux par une approche de type QRA (quantitative risk assessment) est devenue incontournable pour l’aménagement des territoires de montagne et le choix des stratégies destinées à réduire le risque. Cependant, en pratique, la QRA reste peu utilisée et développée. À cet égard, cet article propose de renforcer les bases formelles du calcul du risque dans le domaine des chutes de blocs et démontre sa faisabilité sur des zones urbanisées/urbanisables. Les effets de la non-stationnarité du phénomène, et l’apport de nouvelles mesures de risque permettant les arbitrages court terme/long terme, sont également abordés. Le potentiel de l’approche est illustré par le cas d’étude réel de la commune de Crolles, dans les Alpes françaises.
Complex multilevel fracture tests of concrete: basic mechanical fracture parameters of standard size specimens
Authors: Lehký David , Šimonová Hana , Kucharczyková Barbara , Daněk Petr
Published: October 2020

The aim of the current research is to develop a complex multilevel approach for the experimental–computational determination of mechanical fracture parameters of concrete as a typical quasi-brittle material. This includes testing, advanced evaluation and soft computing-based identification of specimens of multiple sizes in multiple test configurations and analyses of fracture processes using multiscale modelling approaches. The evaluation of a part of an extensive experimental program is presented in this paper. The basic mechanical fracture parameters of the investigated concrete determined on standard test specimens with nominal dimensions of 100 × 100 × 400 mm subjected to the standard three-point bending fracture test are introduced. The results of three different sets of specimens provided with different depths of the initial notch are compared in terms of absolute values of the selected mechanical fracture parameters. The results indicate different sensitivity of particular mechanical fracture parameters in relation to the depth of the initial notch.
Anthropometric characteristics and physical fitness in elite futsal male players. A systematic review
Authors: Stubbs-Gutierrez Alejandro , Medina-Porqueres Ivan
Published: October 2020

The purpose of the study was to summarize scientific literature on anthropometric characteristics and physical condition in high-level futsal male players. Potentially relevant publications were identified by searching electronic databases from inception to September 2019. Selected studies were independently reviewed for methodological quality and assigned a level of evidence. A total of 10 articles comprised this review, all of them being observational designs. Physical fitness studies included power, speed, agility, flexibility, and functional tests, maximum oxygen consumption (VO2max) and ventilatory threshold (VT) testing. PEDro scale values ranged from 4 to 7, with an average of 5.7 and low/moderate to moderate/strong methodological quality. Futsal players tend to show different physical profiles depending on their position. In general, field futsal players present higher VO2max, VT, and heart rate values than goalkeepers. Together with these findings, more interventional studies are needed for the purpose of defining proper physiological and anthropometric profile in high-level futsal.
Rekonvaleszentenplasma zur Behandlung von schwerem COVID-19: Rationale und Design einer randomisierten, offenen klinischen Studie von Rekonvaleszentenplasma verglichen mit bestmöglicher supportiver Behandlung (CAPSID-Studie)
Authors: Körper Sixten , Jahrsdörfer Bernd , Appl Thomas , Klüter Harald , Seifried Erhard , Schrezenmeier Hubert
Published: October 2020

Rekonvaleszentenplasma wurde bei Patienten mit akuten, viralen respiratorischen Erkrankungen mit schwerem Verlauf eingesetzt (SARS- oder MERS-Coronavirus, Influenza H1N1, H5N1). Diese Studien erbrachten Hinweise auf eine Reduktion der Viruslast, einer Verkürzung des Krankenhausaufenthalts und eine Reduktion der Mortalität durch Rekonvaleszentenplasma. Die Wirkung konnte jedoch nicht abschließend belegt werden, da es sich nicht um randomisierte Studien handelte. Nach einer SARS-CoV-2-Infektion kommt es bei den meisten Patienten zu einer raschen Bildung von neutralisierenden Antikörpern. Wegen der pandemischen Entwicklung gibt es eine wachsende Zahl Genesener mit neutralisierenden Antikörpern, die als potenzielle Spender in Betracht kommen. Wir konzipierten eine prospektive, randomisierte Studie, um die Wirksamkeit und Sicherheit von Rekonvaleszentenplasma zur Therapie von schwerem COVID-19 und dessen Wirkmechanismus zu untersuchen (CAPSID-Studie). In diesem Beitrag werden
die Rationale und das Design der Studie vorgestellt.
Regional Recurrences and Hyams Grade in Esthesioneuroblastoma
Authors: Ziai Hedyeh , Yu Eugene , Weinreb Ilan , Perez-Ordonez Bayardo , Yao Christopher M. K. L. , Xu Wei , Yang Dongyang , Witterick Ian J. , Monteiro Eric , Gilbert Ralph W. , Irish Jonathan C. , Gullane Patrick J. , Goldstein David P. , Ringash Jolie , Bayley Andrew , de Almeida John R.
Published: October 2020

Objective The aim of this study is to determine if Hyams grade may help predict which patients with esthesioneuroblastoma (ENB) tumors are likely to develop regional recurrences, and to determine the impact of tumor extent on regional failure in ENB patients without evidence of nodal disease at presentation.

Design The study was designed as a retrospective review for ENB patients.

Settings The study was prepared at tertiary care academic center for ENB patients.

Participants Patients with ENB were included in the study.

Main Outcome Measures  Oncologic outcomes (5-year regional and locoregional control (LRC) and overall survival) in patients with Hyams low grade versus high grade. Oncologic outcomes based on radiographic disease extent.

Results A total of 43 patients were included. Total 25 patients (58%) had Hyams low-grade tumor, and 18 (42%) had high-grade tumor. Of the 34 patients without regional disease at presentation, 8 (24%) were treated with elective nodal radiation. There were no statistically significant differences in 5-year regional control in the Hyams low-grade versus high-grade groups (78 vs. 89%; p = 0.4). The 5-year LRC rates in patients with low grade versus high grade were 73 versus 89% (p = 0.6). The 5-year overall survival rates in patients with low-grade versus high-grade tumors were 86 versus 63% (p = 0.1). Radiographic extension of disease into the olfactory groove, olfactory nerve, dura, and periorbita were statistically associated with decreased 5-year overall survival (5-year OS 49 vs. 91% [p = 0.04], 49 vs. 91% [p = 0.04], 44 vs. 92% [p = 0.02], and 44 vs. 80% [p = 0.04], respectively).

Conclusion ENBs are associated with a risk of regional failure. The current analysis suggests that Hyams low-grade and high-grade malignancies have comparable rates of early and delayed regional recurrences, although small sample size may limit our conclusions.
Temporal Bone Adenoma: A Comprehensive Analysis of Clinical Aspects and Surgical Outcome on a Very Rare Entity
Authors: Alsalman Hussain , Crowther John A. , McLellan Douglas , Kontorinis Georgios
Published: October 2020

Objective The aim of this study is to present our experience in dealing with middle ear adenomas (MEAs), very rare tumors of the middle ear.

Methods The medical notes of individuals with MEAs treated in tertiary referral; academic settings were retrospectively reviewed. We recorded the presenting symptoms, imaging findings, and pathology results. We additionally examined our surgical outcomes, follow-up period, recurrence, and morbidity.

Results We identified four patients with MEAs: two males and two females with an average age of 36.25 years (range = 27–51 years). Despite the detailed imaging studies, including computed tomography and magnetic resonance imaging with intravenous contrast administration, a biopsy was essential in setting the diagnosis. Total surgical resection was achieved in all patients without any recurrence over an average of 6 years (range = 3–10 years). Complete ipsilateral deafness was the commonest surgical morbidity due to footplate infiltration by the tumor.

Conclusion Total surgical resection is the treatment of choice in MEAs to minimize the risk for recurrence; this can come with morbidity, mostly sensorineural deafness. Given the very limited literature, long-term follow-up is recommended.
Clinical Features of SARS-CoV-2 Infection
Authors: Midha Vandana , Jindal Jyoti , Bhanot Rishu
Published: October 2020

Viral diseases continue to emerge and represent a serious issue to public health. Since viral transmission occurs through respiratory droplets, most patients with coronavirus disease 2019 (COVID-19) predominantly have respiratory tract involvement. The clinical spectrum of COVID-19 ranges from asymptomatic to symptomatic with mild, moderate, and severe degrees of illnesses. There are no specific clinical features that can yet reliably distinguish COVID-19 from other viral respiratory infections. Unexplained worsening of underlying chronic illnesses and comorbidities should raise the suspicion of COVID-19. Beyond the life-threatening pulmonary complications of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the widespread organ-specific manifestations of COVID-19 are increasingly being appreciated. Given that angiotensin-converting enzyme 2, the entry receptor for the SARS-CoV-2, is expressed in multiple extrapulmonary tissues and that all might contribute to these extrapulmonary manifestations of COVID-19, here we review the pulmonary and extrapulmonary presentations for patients with COVID-19.
KMA Entscheider Blog: Gewinner und Verlierer der COVID-19-Pandemie
Authors: Kolb Milena
Published: October 2020

Seit vielen Jahren nimmt der ökonomische Druck auf Krankenhäuser zu. Gerade kleinere Krankenhäuser in öffentlicher Trägerschaft und ohne Spezialisierung kämpfen. Wie verändert die COVID-19-Pandemie die Krankenhauslandschaft?
Krankenhauszukunftsgesetz: Milliarden für die Zukunft
Authors: Kucera Martin
Published: October 2020

Mit dem beschlossenen Krankenhauszukunftsgesetz (KHZG) dürfen Kliniken eine kräftige Finanzspritze erwarten. Der Bund wird drei Milliarden Euro über einen Krankenhauszukunftsfonds in moderne Notfallkapazitäten und die Digitalisierung investieren. Ob die Länder zusätzlich 1,3 Milliarden aufbringen, bleibt abzuwarten.
Notaufnahmen: Verkannte Umsatzbringer
Authors: Rößing Sabine
Published: October 2020

In der Gunst von Klinikmanagern haben Notaufnahmen traditionell einen schweren Stand. Sie sind überfrequentiert und unterfinanziert und für die Krankenhäuser damit vor allem eines: teuer. Ausgerechnet das Coronavirus könnte vielerorts zu einer Neubewertung führen.
Schulungen Gegen Cybercrime: Cybersicherheit ist kein Spiel
Authors: Reichl-Streich Andrea-Julia
Published: October 2020

Schon vor der Corona-Pandemie stellten die zunehmenden Ransomware- und Phishing-Attacken deutsche Krankenhäuser vor Probleme. Mit Awareness-Programmen für Mitarbeiter versuchen Kliniken, der Gefahr zu begegnen. Spätestens mit Corona und der nun forcierten Digitalisierung stellt sich jedoch die Frage, ob klassische Schulungsformate wie E-Learning und Präsenzveranstaltungen noch ausreichen oder nicht neue Ansätze gefragt sind.
Neuer Klinik-Riese: Rhön-Übernahme – ein Erfolgskonzept?
Authors: Köbe Philipp
Published: October 2020

Aus dem Übernahmekampf um die Rhön-Klinikum AG ist Asklepios als Sieger hervorgegangen, der andere Rhön-Großaktionär B. Braun wurde aus dem Unternehmen gedrängt. Wie viele gescheiterte Übernahmen der Vergangenheit zeigen, sind Übernahmen ohne die richtige Strategie aber nicht ohne Risiken.
Neue Pflegeprofessur: Wissenschaftler, Technikfan und Pflegeprofi
Authors: Heeser Alexandra
Published: October 2020

Patrick Jahn ist nicht nur Pflegeforscher, er will der Pflege auch zu einem neunen Selbstverständnis verhelfen – und das mit ungewöhnlichen Themen wie Robotik und Digitalisierung in der Pflege. Seit Kurzem hat er eine Pflege-Professur am Uniklinikum Halle inne, die es so in Deutschland bislang nicht gibt.
Lead iodide and cesium lead halide perovskite highly oriented films deposited by spin coating
Authors: Li Lei , Wei Wenwang , Wang Jiabin , Peng Yi , Zhu Xinglin , Zhao Xinyu , Su Mengwei , Wang Yukun , Sun W. H.
Published: October 2020

Spin-coated films are usually polycrystalline or amorphous, while some special materials such as lead iodide (PbI2) and inorganic perovskite could be deposited onto a variety of single-crystal substrates by spin coating obtaining highly oriented films. Herein, we report an effective method for depositing highly textured PbI2 and CsPbI2Br films—via spin coating. An unexpected high-quality PbI2 film with uniform out-plane orientation of the {001} plane was deposited on the gallium nitride substrate, which was benefited from heterogeneous nucleation measured by high-resolution x-ray diffraction (XRD) and Raman mapping. Furthermore, the α-phase CsPbI2Br highly oriented film was deposited on single-crystal (100) silicon with only the (200) plane for the first time. Compressive stress was found both in PbI2 film and in CsPbI2Br film via XRD, Raman spectra, and photoluminescence spectroscopy. Density functional theory calculations were performed to confirm that CsPbI2Br had a tetragonal structure rather than an orthogonal structure.
Quantification and classification of potassium and calcium disorders with the electrocardiogram: What do clinical studies, modeling, and reconstruction tell us?
Authors: Pilia N. , Severi S. , Raimann J. G. , Genovesi S. , Dössel O. , Kotanko P. , Corsi C. , Loewe A.
Published: October 2020

Diseases caused by alterations of ionic concentrations are frequently observed challenges and play an important role in clinical practice. The clinically established method for the diagnosis of electrolyte concentration imbalance is blood tests. A rapid and non-invasive point-of-care method is yet needed. The electrocardiogram (ECG) could meet this need and becomes an established diagnostic tool allowing home monitoring of the electrolyte concentration also by wearable devices. In this review, we present the current state of potassium and calcium concentration monitoring using the ECG and summarize results from previous work. Selected clinical studies are presented, supporting or questioning the use of the ECG for the monitoring of electrolyte concentration imbalances. Differences in the findings from automatic monitoring studies are discussed, and current studies utilizing machine learning are presented demonstrating the potential of the deep learning approach. Furthermore, we demonstrate the potential of computational modeling approaches to gain insight into the mechanisms of relevant clinical findings and as a tool to obtain synthetic data for methodical improvements in monitoring approaches.
A Brewster incidence method for shocked dynamic metrology of transparent materials and its error evaluation
Authors: Zhong Zhicheng , Zhang Lin , Jiang Hao , Gong Wenqi , Gu Honggang , Chen Xiuguo , Liu Shiyuan
Published: October 2020

The shock etalon method with normal incidence is an effective method to extract the shocked dynamic parameters of transparent materials. In order to eliminate the sample surface reflection, additional efforts on the sample preparation are usually introduced, which may limit the application of the method. Here, we proposed a Brewster incidence method to carry out the shock compression experiment on transparent materials. By utilizing the p-polarized light as the probe pulse at Brewster incidence, the sample surface reflection can be directly eliminated, which consequently simplified the experiment preparations. The errors of the proposed method have been evaluated using a set of virtual experiments. The results show that the shocked dynamic parameters can be accurately and robustly retrieved even when the nominal refractive index of the sample deviates 0.01 from its true value, or the incident angle bias 0.33° from the Brewster angle. Finally, a set of shock compression experiments on a polycarbonate film sample are carried out, and shocked dynamic parameters, such as shock velocity, particle velocity, and shocked refractive index, are successfully measured, for demonstration.
Supercell-core software: A useful tool to generate an optimal supercell for vertically stacked nanomaterials
Authors: Necio Tomasz , Birowska Magdalena
Published: October 2020

Vertically oriented materials, such as van der Waals heterostructures, which have novel hybrid properties, are crucial for fundamental scientific research and the design of new nano-devices. Currently, most available theoretical methods require applying a supercell approach with periodic boundary conditions to explore the electronic properties of such nanomaterials. Herein, we present supercell-core software, which provides a way to determine the supercell of non-commensurate lattices, in particular van der Waals heterostructures. Although this approach is very common, most of the reported work still uses supercells that are constructed “by hand” and on a temporary basis. The developed software is designed to facilitate finding and constructing optimized supercells (i.e., with small size and minimal strain accumulation in adjacent layers) of vertically stacked lattices. The developed software tool is accessible as open-source free software.
Jan Lucasz. van Hasselt: A Dutch Painter in Safavid Isfahan
Authors: Floor Willem , Sajadi Forough
Published: October 2020

In February 1617, Jan Lucasz. van Hasselt arrived in Persia accompanying Pietro Della Valle (1586–1652), a Roman noble. Sometime between 1618 and 1621 Van Hasselt entered the service of Shah ʿAbbas I (r. 1588–1629), for whom he worked as a painter until the death of the shah. Later, during the reign of Shah Safi I (r. 1629–42) and until 1654 he tried to establish himself as a commercial agent for Persia. The present paper examines the career of this Dutch painter in Persia and the Netherlands. Meanwhile the artworks that may be attributed to him will be discussed.
Step by Step Stress Analysis of Ammonia Scrubber Vertical Pressure Vessel Using Finite Element Method
Authors: Arhami  , Mubarak Amir Zaki , Saputra Andika , Ali Masri
Published: October 2020

In order to solve the stress problem of ammonia scrubber pressure vessel, this paper proposes the analysis steps using finite element method. The study is a type of vertical pressure vessel used to remove pollutants in ammonia gas. Firstly, the modeling of the vertical pressure vessel geometry was carried out using Autodesk Inventor Professional 2017. Secondly, the meshing was carried out using Autodesk Nastran In-CAD 2017. For the meshing, we used tetrahedral element and we chose the parabolic type element order. Thirdly, the analysis was carried out using Autodesk Nastran In-CAD and based on the design pressure of 0,5 MPa with a volume of 1,21 m3. The results showed that the maximum stress occurred in the connection area between the inspection opening and the shell of 333,4 MPa. The maximum displacement occurred in the shell adjacent to the inspection opening was 3,268 mm. Based on ASTM standards on SA 240/A240M Gr 304 material, the maximum strength of material stress was 515 MPa. Finally, theoretical validation was carried out for the entire model, and the results were within the permissible limit.
Design and development wire cutter CNC for Styrofoam product
Authors: Syahriza  , Aulia U , Muspika L
Published: October 2020

Cutting Styrofoam manually will result in inaccurate cutting and dissimilar shape. To upgrade the quality of the product, a Styrofoam cutting machine which can cut automatically is needed. Thus, the aim of this research is to create a Styrofoam cutting machine using CNC 2 Axis Wire Cutter which can cut the material according to the CAD drawing module, and accelerate the cutting process. The control system of the machine uses the Arduino UNO microcontroller. The cutting process is performed by sending G-Code file to the microcontroller through the Universal G-Code Sender software. Afterwards, the microcontroller sends a signal to activate the stepper motor, and it is generated actuator movement according to the drawing in G-code file. The optimal Styrofoam cutting resulted by using CNC Wire Cutter with 0.2 mm nickel wire, 220oC, and 2 cm thickness.
The planning of iron sand inventory with System Dynamic Approach
Authors: Sentia P D , Andriansyah  , Lufika R D , Satria M J
Published: October 2020

The need for iron sand as a supporting material of the cement making is increasing, so companies require planning of inventory control of iron ore to get all the needs in terms of quality and quantity. Inventory control planning will be useful to meet the demand and reduce inventory wastage. In the production process, companies often experience a shortage of materials when demand soared and raw materials excessed when demand decreases. This study aims to determine the best ordering method next year so that the company does not experience the stock shortage. The system dynamics method was applied with the help of Powersim software in terms of modelling and simulating the iron ore ordering system in the form of several scenarios. Based on the result, the best scenario was to order the iron ore as much as 4,013 tons/month, which is twice the amount in the previous policy, and the average inventory of the iron ore was 10,943 tons/month.
Heat Transfer Analysis on the Tube Type Heat Exchanger with Fin Pitch Variations
Authors: Syuhada A , Afandi D , Sofyan S E
Published: October 2020

A heat exchanger is a device usually used to dissipate the heat generated during the mechanical processes. To improve the performance of the heat exchanger, a lot of research has been conducted including the addition of fins on the outer surface. This experimental study examines the heat transfer process on the outer surface of the heat exchanger. The heat exchanger was made of galvanized pipes with an inner and outer diameter of 20 mm and 22 mm. The heat exchanger has a pass length of 30 cm, the spacing between the tube of 6 cm and a total length of 6 m. The spiral fin made of an aluminum plate is mounted to the outer surface of the tube pipe of the heat exchanger. It has a thickness of 0.3 mm. The fin pitch of the heat exchangers was varied to 3 cm, 5 cm, and 7 cm. The heat exchanger was fed with hot water at a constant temperature of 80 °C and a flow rate of 0.4 L/s. While, the ambient air was blown at the outer surface of the heat exchanger at three different speeds namely 2.4 m/s, 2.8 m/s, and 3.4 m/s. It is found that the highest convective heat transfer rate and convective heat transfer coefficient are yielded by the heat exchanger with a fin pitch of 3 cm namely, 6607.2 W and 235.8 W/m2K, respectively.
Development of rule-based expert system for conceptualisation of poster design
Authors: Purnomo M R A , Hidayatuloh S
Published: October 2020

This study discusses development of rule-based expert system (R-ES) as a decision support for poster design conceptualisation. Users of the proposed expert system are novice poster designers while the experts are senior and professional poster designers. Development of R-ES is started by defining type of poster to be designed. Based on professional poster designer’s experiences, 5 types of poster have been proposed, which are advertising, information, movie, event and political poster. A knowledge-based system consists of IF-THEN rules have been developed by the experts to determine poster design concept that are colour combination, poster size, font type and size, expert note, and poster sample. Result of this study is an online expert system for conceptualisation of poster design that could be widely used by novice poster designers without constrained by space and time.
Biomechanical Posture Assessment of Salted Fish Industry Workers in West Aceh
Authors: Husni  , Hasanuddin I , Hadi K , Akram  , Firsa T
Published: October 2020

Salted fish is dried fish that is preserved by adding salt as the preservative medium. The process of production starts with cleaning, salting, boiling, drying, sorting, and packing. The length and complexity of the process lead to an increase in the risk of MSDs and posture complaints among the workers. This study aimed to find out the factors that caused the complaints with the biomechanical posture method. Six subjects were measured for the tension at erector spinae and the moment at (lumbar 5 sacrum 1) L5-S1 vertebral joint created by body segments and load, the calculation of the workers’ body segment weight, the distance of the body’s center point to the lumbar 5 sacrum 1 (L5-S1), and biomechanics at L5-S1. The largest body segment weight was found at the cleaning station, which dealt with the process of manually lifting the fish, with a bodyweight value of 70 kg, Wtrunk: 350 N, Whead: 58.8 N, Warm: 35.7 N and Wload: 300 N. The farthest distance from the body’s center point to L5-S1 was found at the drying station, which deals with the process of drying the fish, with values of the distance of head (dhead): 54.78 cm, distance of trunk (dtrunk): 59.26 cm, distance of arm (darm): 67.39 cm and distance of box (dbox): 86.11 cm. The largest moment in force on L5-S1 was found at the packing station, which deals with the fish transferring and packaging process, with the value of the moment of force at 5351.86 N and 4215.28 N. Therefore, it is suggested that the salt fish industry finds solutions, re-designing the work station, decreasing the lifting load, and producing proper equipment to assist workers during labor to improve their safety and health.
The Design of Rowing Ergometer Based on the Anthropometry of Acehnese Male Athletes
Authors: Hasanuddin I , Husaini  , Rizki M N , Akhyar  , Nasruddin M , Amir N , Marlina Y , Asmawati L
Published: October 2020

A rowing athlete requires effective and systematic physical training. Thus, an ergometer is very influential on the endurance of an athlete’s body and becomes a vehicle of simulating groundwater rowing. However, the ergometer tool currently used has no specifications and dimensions that are in accordance with the anthropometry of male rowing athletes in Aceh. Based on these conditions, the rowing ergometer tool will be designed based on the anthropometry of rowing athletes in Aceh. Data retrieval was done by taking samples from six male rowing athletes. The data were then tested for the level of trust, accuracy, uniformity, and adequacy. From the results of data analysis, the design of the ergometer tool was in accordance with the anthropometry of male rowing athletes in Aceh. This situation can build comfort for male athletes and increase the endurance of their muscles. This includes maintaining the tempo of rowing and being able to move oars with long distances in a short time.
The influence of energy production from renewable energy sources on energy efficiency and total factor productivity
Authors: Balashova S. A. , Gomonov K. G. , Matyushok V. M.
Published: October 2020

The article analyzes the international experience of improving energy efficiency due to increasing the level of energy production from renewable sources and technological changes. Empirical verification of the related hypothesis has been carried out for the USA, China, India, Germany and Russia using econometric tools. The necessity of the transition to a new energy structure based on the active introduction of energy-efficient technologies, renewable energy sources, integrated systems and intellectual energy services based on an open grid architecture is substantiated. The posed hypotheses confirm the following: the production of energy from renewable sources is increasing in all countries, not only in the countries with the lack of fossil energy sources (Germany, India, China), but also in the USA and Russia; the growth of energy consumption caused by the growth of the economy and the population is humped due to the introduction of energy-efficient technologies and due to an increase in the share of renewable energy; growth in the share of renewable sources in energy consumption and total factor productivity increases energy efficiency in terms of GDP per unit of energy used in Germany, India and Russia.
Fast and Integrated Chargers for Lithium Ion Batteries
Authors: Sabarimuthu M , Senthilnathan N , Kumar M Arun , Kamalesh M S , Jayaprakash V , Srinivasan R
Published: October 2020

Electric vehicles were introduced in the year of 1908, where they have larger battery for power supply. Now- a- days the technique for charging e-bikes is done either by using grid supply or solar power. This paper says about charging circuit for batteries which uses both solar power and power from the grid to charge the electric vehicles. The charging with solar helps to reduce the emission from power grid. Ever-increasing demand for fuel supply, rising fuel prices, and increased environmental awareness among masses are paving the way for electric vehicles (EVs). Although, in recent years EV market has seen an exponential growth, one of the major challenges faced by this automotive/vehicular market. Now the Indian government had ordered to Indian Vehicle Association to launch the electric vehicles with in 2023. But the charging of electric Batteries has taken more time, which compare to fossil fuel and gas. To overcome this issue use of turbo charger, to reduce the charging time as well as self charging by solar during running time is proposed. The charger uses the source from EB grid and solar as well as at parking time. The results proves that proposed work have reduced the charging time of the lithium ion battery compared to the conventional charging technique and all under controlled temperature raise.
Performance Enhancement of Boost Converter Fed Permanent Magnet Synchronous Machine
Authors: SachinAmreiss GN. , Kalavalli C. , Nazar Ali A.
Published: October 2020

The renewable energy plays a vital role in various fields like electronic and automotive applications. This paper presents the Permanent magnet synchronous machine (PMSM) which is fed by boost converter. A wide range of dc voltage is fed to bridge inverter by boost converter which in turn controls the speed of PMSM. Boost converter is used to boost up the input voltage. An electric vehicle may be powered through a shaft of the motor to run the various electric vehicles like electric aircraft, electric truck, electric space craft, electric locomotive etc. In this paper by using converter topologies increase the performance of the motor speed. The performance of the proposed system is verified using MATLAB/Simulink and presented results demonstrate the performance and analysis of the system to provide high speed by using PID controller.
Groundwater Monitoring System Using Internet of Things
Authors: SachinAmreiss GN. , Karthikeyan B. , Premkumar K.
Published: October 2020

The major problem among the people is that they are lacking in the awareness of the underground water usage. Thus, they are in the process of designing the “Application” which gives the data about the underground water consumption of the consumers and monitor the ground water usage of the consumers. Also, alarming when the maximum usage of water or wastage of water. This system sends the information of the water usage of that area and automatically recorded in the government water board of that area with quantity of the water usage, If exceeds the limit will have the locking system of the water supply of the usage area with fine. Thus the paper gives the total guidance to the people according the usage of the underground water resources digitally with the application itself
Comparison of Emulated Inertia controller with Synchronous Generator
Authors: Sarojini Ratnam Kamala , Palanisamy K
Published: October 2020

The emulated inertia controller (EIC) is designed to emulate the inertia to the power electronic inverter. The EIC helps to integrate the large-scale PV into the grid without affecting the stability. This paper demonstrates the design of EIC control. This paper the highlights the comparison of EIC with the traditional synchronous generator (SG). The frequency response of both EIC and SG are compared for different scenarios.
Liquid metal level measurement techniques
Authors: Reshma R , Ramachandraiah Uppu , Devabalaji K R , Sitharthan R.
Published: October 2020

Various types of liquid metal level measurement are used in various applications. Liquid metals have excellent electrical properties which can also be utilized for level measurement. Many types of level measurement exist such as pressure transducers, floats, inductive devices, resistance tubes, visual etc. Many liquid metals have corrosive or toxic nature. This mandates indirect or non-intrusive means of measurement. So techniques are being experimented even now for the easy attainment of accurate measurements. This paper gives a brief description on various level measurement techniques used to measure the level of liquid metals. Detailed description about a mutual inductance based level probe is also presented in this paper.
HERIC Inverter- A SEPIC based transformer-less converter design and simulation for isolated standalone PV system
Authors: Udayakumar M.D. , Gowthaman K.S. , Prabhu A , Nazar Ali A.
Published: October 2020

Photovoltaic transformer-less inverter due to its high efficiency, low power loss and cost plays an important role in energy market. In this paper solar PV based 1φ transformer-less HERIC converter for standalone isolated PV system has been designed and analysed. To control the solar PV output, a dc-dc SEPIC converter is modelled and designed with the feature of Maximum Power Point Tracking. Contrary to other inverter topologies H5, H6, NPC (neutral point clamping), HERIC inverter comprises low leakage current. The entire proposed system is designed and simulation is carried out in MATLAB environment.
Design, analysis and optimal sizing of standalone PV/diesel/battery hybrid energy system using HOMER
Authors: Thirunavukkarasu M , Sawle Yashwant
Published: October 2020

Now that the world’s most important problems are the lack of fossil fuel reserves, we need to find a solution to preserve non-renewable resources and replace them with other renewable resources such as solar power. The next focus is on the rising level of undesired gases, such as carbon dioxide, etc. There is a need to regulate the impact of such greenhouse gases. This paper mainly intentional to situate optimal scheduling and to meet the power demand profile by the utilization of available solar energy resources. Considering the above data we have put forth an attempt to scrutinize the leverage of distributed Generation considering solar energy, alone can vary, when associated together they give a dependable wellspring of vitality as a DG is utilized as reinforcement unit for the crisis. So consolidating a solar powered energy source with a diesel generator provides reliable generation, utilizing independent sunlight based renewable power system for a chose area in Vellore region, Tamil Nadu, India. The principle goal of this paper is to decide the optimal sizing dependent on different designs, moreover reduce the cost parameters such as, total net preset Cost (TNPC), system cost of Energy (COE), unmet electric load, CO2 emissions by utilizing HOMER Software. It is found that the PV/Diesel/converter combination provides optimal results which providing vitality with 0% unmet load at the minimum electricity cost, which is diminished from$ 0.672 to $0.319/Kwh.
Noise Resilient distributed Voltage and Frequency Control for Low Voltage Islanded Microgrid
Authors: Shrivastava S , Sahu J , Sitharthan R
Published: October 2020

Motivated by advancement in distributed control schemes of microgrid (MG) network, this paper presents a noise resilient secondary control scheme for low voltage (LV) islanded MG network. For a LV MG the grid lines are highly resistive, hence conventional droop control results in poor stability and power sharing. A combination of droop-boost primary control with a noise resilient secondary distributed control is presented in this work. The presented control scheme achieves accurate power sharing and voltage and frequency restoration under noisy communication links for LV MG network. The communication links used for information sharing in secondary control are subjected to noisy environment; therefore the data received is corrupted with noise. The presented control scheme counteracts the noise effect for LV MG network. The performance of presented control scheme is evaluated by simulating a 4-bus MG test system in MATLAB/SimPowerSystem environment under different test scenarios. The obtained results envisage that the presented control scheme restores the voltage/frequency and provide accurate active power sharing in short time under load perturbation, varying noise parameters, and plug and play operating conditions.
Generation of energy from Solar and its protections
Authors: Rajkumar A. , Nagendran J. , Subramaniyan J. , Jai Ganesh R.
Published: October 2020

In this article, a seven-level inverter powered by solar has been proposed to achieve a sinusoidal output voltage with high efficiency and enhanced power quality. This system consists of active inverter and flipped condenser clamping. It gives output voltage level of 2/3. By connecting the switched condenser branch in the front or back end series to the inverter output a seven-level output voltage wave shape can be obtained with ample non-work switching states to match the voltage of switching condensers. The consequence of the proposed method is validated using MATLAB SIMULINK for simulation. Comparing with conventional seven-level inverter topology, the proposed design used a minimal number of switches using a basic modulation process. The demand for electricity that is so high in India might be a key driver for the use of renewable power as an option for energy requirements. To satisfy this need, this article introduces a solar smart flower layout and then modeled using the resources provided in the solid function system. And use a set Photovoltaic panels harvest additional power mostly during 12 pm to 2:00 Pm in Nigeria which resulted in less renewable energy. Consequently, there is a need to increase the energy consumption of PV solar panel by developing a solar tracker cannot be overlooked. Photovoltaic cells must be aligned with the sun in order to just get optimum energy.

The microcontroller is being used to power the motor dependent on information gathered from the LDRs. The findings of this research have clearly demonstrated that the monitoring solar panel generates more electricity compared to a conventional panel. The location of solar panel including voltage was going to monitor by using IoT. Light Dependent Resistors LDRs are being used to detect the strength of lighting and thus the PV solar panel is appropriately addressed to control maximum energy. The system uses motors to regulate the amount of the solar panel. The microcontroller is being used to power the motor centered on signals obtained from the LDRs. The outcome of this work has demonstrated clearly that the monitoring solar panel generates more power compared to a conventional panel. The location of solar panel and volts was going to monitor through using IoT.
Analyzing the performance of Cascaded H-Bridge Multilevel Inverter with three phase multiwinding transformer and single phase supply
Authors: Kathirvel P. , Karpagam V. , Vijayakumar K. , Venkatesh A.
Published: October 2020

A multi-level inverter type cascaded H-bridge design with a different harmonic reduction technique is provided. The proposed design includes the DC source, hybrid cascaded multilevel inverter, transformer and load circuit. For a hybrid, multi-level inverter, the 7-level stepped form of the wave is achieved similar to the sinus wave. The transformer supplies the seven-tier hybrid inverter with cascading into the load. The 5th and 7th harmonics were efficiently extracted with the algorithm from the line current. The simulation and research was carried out to show how the system proposed works. The observed harmonic detail results, the THD are approximately 12.27% only. The 3rd level harmonics magnitude is 5.2% and 5th level harmonics is only 8.2%. Simulation results from SIMULINK/MATLAB software and hardware experimental results are tabulated. The results are explained with graphically.
Comparative Study of Recurrent and Non Recurrent Neural Network Based Approach for Modeling of PEM Fuel Cell Powered Electric Vehicle
Authors: Gomathi K , Karthik M , Usha S
Published: October 2020

In this paper, a non recurrent Focused Time Delay Neural Network (FTDN) and a recurrent nonlinear autoregressive network with exogenous inputs (NARX) Neural Network are employed as a black box prediction model for substituting the complex conventional model of PEM 5kW Proton Exchange Membrane (PEM) Fuel Cell system. A comparative assessment is performed between the recurrent and non recurrent neural network on certain performance measures to identify an optimal network for modeling the PEM Fuel Cell System in PEM Fuel Cell powered electric vehicle application. From the simulation result, it is observed that the recurrent NARX network is showed excellent prediction ability in terms of minimizing the Mean Square Error (MSE) value with faster convergence. The optimized network is tested with intermittent data for examining its adaptability and validated with experimental benchmark data for proving its reliability. Hence the optimum network is integrated with converters and vehicle dynamic system to develop a fuel cell based electric vehicle system. The performance of the proposed vehicle is tested with US06 drive cycle pattern for justifying its reliability.
Experimental analysis of PQ parameter estimation of VFD drives
Authors: Dutta Nabanita , Kaliannan Palanisamy , Subramaniam Umashankar
Published: October 2020

Controlling the AC motor speed and torque changing voltage and frequency for electrical and mechanical system the adjustable speed drive system is required which is known as Variable Frequency Drive. The usage of VFD is gradually increasing every day. The 25% of the world’s energy is consumed by the motor load for which the usage of VFD is responsible. The cost of VFD can be reduced and size also reduced to help the system more compatible within a very short span of space. It is based on semiconductor topologies, driver circuit, control circuit and both software and hardware devices are also used. Now power quality is the important role plays for the energy efficiency of the system. The researchers are working on various issues of power quality like voltage sag, swell, system unbalance etc. which are required to be analysed for the improvement of the efficiency of the system. In this research the VFD based induction motor faces various power quality issues which are described. The paper is concentrating on various power quality issues which affects the performance of VFD drives through various parameters. The various power quality parameters are predicted for the change in loadings with the help of MATLAB curve fitting tool. With different load variations voltage and current unbalance have been measured. The process has been done though experimental setup with the help of power quality analyser Fluke 302 and both the controller technique like VVC+ and V/F methods have been used.
Seamless Engineering Process to Adapt IEC 61850 Standard for Substation Automation Through Requirements Specification
Authors: Khan S U , Kalam A
Published: October 2020

Whatever demographic one belongs to in the technology adaption life cycle, for a seamless implementation of IEC 61850 Standard it is required to answer the key concern related to extent of change. This paper provides guidelines on the evaluation of amount of change by going through the requirement specification process, interface evaluation, and configuration tools. All this information is presented in a process form which makes it easier to quantify the inputs for organizational change management.