scholarly journals Utilization of MOSFET transistor as an electronic load to trace I-V and P-V curve of a solar panel

2021 ◽  
Vol 229 ◽  
pp. 01021
Author(s):  
Abdellah Asbayou ◽  
Mohamed Agdam ◽  
Amine Aamoume ◽  
Ahmed Soussi ◽  
Ahmed Ihla ◽  
...  
Keyword(s):  
Experimental Data ◽  
Simple Technique ◽  
The Other ◽  
Variable Load ◽  
Electrical Behavior ◽  
Variable Resistor ◽  
Photovoltaic Panel ◽  
Standard Temperature ◽  
Electronic Load ◽  
The One

To understand the electrical behavior of a photovoltaic panel, it is necessary to know the characteristic Ipv = f(Vpv). The best way to obtainthis I-V curve is to use a variable resistor. This paper proposes a new and simple technique based on a MOSFET transistor as a variable load, which whose gate voltage is controlled by an RC filter from the Arduino. A comparison under standard temperature and illumination conditions between the manufacturer’s datasheet with the simulation by MATLAB/Simulink on the one hand, and on the other hand between the manufacturer’s datasheet with the experimental data for the evaluation of this technique that has been performed.

scholarly journals Benchmarking study between capacitive and electronic load technic to track I-V and P-V of a solar panel

2022 ◽  
Vol 12 (1) ◽  
pp. 102
Author(s):  
Abdellah Asbayou ◽  
Amine Aamoume ◽  
Mustapha Elyaqouti ◽  
Ahmed Ihlal ◽  
Lahoussine Bouhouch
Keyword(s):  
Experimental Data ◽  
Response Time ◽  
Solar Panel ◽  
Solar Panels ◽  
Variable Resistor ◽  
Standard Temperature ◽  
Pv Panel ◽  
Panel Type ◽  
Electronic Load

<p>To detect defects of solar panel and understand the effect of external parameters such as fluctuations in illumination, temperature, and the effect of a type of dust on a photovoltaic (PV) panel, it is essential to plot the Ipv=f(Vpv) characteristic of the PV panel, and the simplest way to plot this I-V characteristic is to use a variable resistor. This paper presents a study of comparison and combination between two methods: capacitive and electronic loading to track I-V characteristic. The comparison was performed in terms of accuracy, response time and instrumentation cost used in each circuit, under standard temperature and illumination conditions by using polycrystalline solar panel type SX330J and monocrystalline solar panels type ET-M53630. The whole system is based on simple components, less expensive and especially widely used in laboratories. The results will be between the datasheet of the manufacturer with the experimental data, refinements and improvements concerning the number of points and the trace time have been made by combining these two methods.</p>

The Interaction of Carbon Black with Sulfur, MBT and TMTD in Vulcanization

1961 ◽  
Vol 34 (2) ◽  
pp. 588-599 ◽  
Author(s):  
G. A. Blokh ◽  
Ch. L. Melamed
Keyword(s):  
Experimental Data ◽  
Carbon Black ◽  
Chemical Reactions ◽  
The Other ◽  
Considerable Importance ◽  
Physical Aspect ◽  
Active Centers ◽  
Other Hand ◽  
The One

Abstract The experimental data collected on the interaction of active centers of carbon black with the rubber on the one hand and of the active centers of carbon black with the sulfur and accelerators, and also with the antioxidants, on the other hand, provide a sound basis for belief that the problem of reinforcement of rubber by active fillers in the process of vulcanization cannot be explained from the physical aspect alone. The facts indicate the considerable importance of the chemical reactions between the active groups of carbon black and the compounding ingredients in the course of vulcanization.

Case and φ-feature agreement in advanced L2 Spanish grammars

2002 ◽  
Vol 2 ◽  
pp. 71-86 ◽  
Author(s):  
Florencia Franceschina
Keyword(s):  
Experimental Data ◽  
The Other ◽  
Gender Agreement ◽  
Advanced Learners ◽  
Number Agreement ◽  
Functional Features ◽  
L2 Spanish ◽  
And Gender ◽  
The One ◽  
Case Number

One account of divergence in advanced L2 grammars is that speakers fail to acquire functional features in the L2 that are not part of the L1 inventory, and that this leads to non-native representations. Since this idea was first proposed by Hawkins and Chan (1997), few studies have provided the type of data which would allow for it to be adequately tested. This paper presents experimental data from two studies of the acquisition of Case, number and gender agreement in a group of advanced learners of Spanish who are L1 speakers of English, French, German, Greek, Italian and Portuguese. Differences were found between accuracy on Case and number agreement on the one hand, and gender agreement on the other, in ways predicted by the Failed Functional Features hypothesis.

Study of Electromagnetic Multipole Transition Half-Lives of One-Hole 15O–15N and One-Particle 17O–17F Mirror Nuclei

2013 ◽  
Vol 68 (10-11) ◽  
pp. 709-714 ◽  
Author(s):  
Mohammadreza Pahlavani ◽  
Behnam Firoozi
Keyword(s):  
Experimental Data ◽  
Wave Functions ◽  
The Other ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Matrix Elements ◽  
Saxon Potential ◽  
N Isotopes ◽  
The One ◽  
Theoretical Results

Energy spectrum and wave functions are obtained numerically with a potential consisting of Woods-Saxon, Coulomb, and spin-orbit coupling parts for the nuclei 15O, 15N, 17O, and 17F. The radial parts of the wave functions are used to calculate some matrix elements of electromagnetic transitions. These results are applied to calculate half-lives of low-lying exited states in the one-particle 17O and 17F as well as in the one-hole 15O and 15N isotopes. The calculated half-lives are compared with available experimental and theoretical results based on harmonic oscillator wave functions and Weisskopf units. In comparison with the results calculated from the other methods, our results based on the Woods-Saxon potential indicate a satisfactory agreement with accessible experimental data.

RÉSISTANCE COMPARÉE DES VIRUS POLIOMYÉLITIQUE, HERPÉTIQUE, SPUMEUX ET SV-40 À L"ACIDITÉ

1963 ◽  
Vol 9 (3) ◽  
pp. 359-367 ◽  
Author(s):  
Robert Dubreuil ◽  
André Chagnon ◽  
Vytautas Pavilanis
Keyword(s):  
Herpes Virus ◽  
Simple Technique ◽  
Foamy Virus ◽  
The Other ◽  
Human Herpes ◽  
Human Herpes Virus ◽  
Poliomyelitis Vaccine ◽  
Different Types ◽  
Herpès Virus ◽  
The One

Poliovirus suspensions of different types and strains, as well as vacuolating virus (SV-40) and human herpes virus, were adjusted to various points between pH 8.5 and pH 1.5. The comparative inactivation of these viruses was established for different conditions of temperature and time of treatment. There appeared to be a large enough difference in the resistance of the poliovirus group on the one hand and that of herpes and vacuolating virus on the other to permit a selective inactivation of these last-mentioned viruses in contaminated suspensions of poliovirus. A few assays done with foamy virus showed that this selective inactivation could be applied also to poliovirus suspensions contaminated with this agent.This simple technique could be of help in the preparation of poliomyelitis vaccine, live or inactivated.

The search for the active base operating in alkoxide promoted E2 reactions in low polar solvents: A kinetic analysis of the elusive problem

1981 ◽  
Vol 46 (13) ◽  
pp. 3247-3263 ◽  
Author(s):  
Jiří Závada ◽  
Magdalena Pánková ◽  
Antonín Vítek
Keyword(s):  
Experimental Data ◽  
Kinetic Analysis ◽  
Kinetic Models ◽  
The Other ◽  
Polar Solvents ◽  
Tert Butanol ◽  
Isomer Distribution ◽  
Single Substrate ◽  
The One ◽  
Active Base

Partial kinetic orders in base for 1-decene, cis-2-decene and trans-2-decene formation from the reaction of 2-decyl bromide with t-C4H9OK in tetrahydrofuran and in tert-butanol and with t-C4H9ONa in tert-butanol have been determined and their significance for assessment of active base has been probed. It has been ascertained that assessment of active base in alkoxide promoted E2 reactions is model-dependent. An unambiguous evidence has been provided by a kinetic analysis of the effect of base concentration on olefin-isomer distribution in the reaction. Two alternative kinetic models of this effect have been devised, the one assuming a competition of several active base species for a single substrate and the other a competition between an uncomplexed and alkoxide-complexed substrate for a single active base. Compatibility of both kinetic models with experimental data has been demonstrated.

Modeling the Combined Effect of pH and Temperature on the Heat Resistance of Bacillus stearothermophilus Spores Heated in a Multicomponent Food Extract

2001 ◽  
Vol 64 (10) ◽  
pp. 1631-1635 ◽  
Author(s):  
W. TEJEDOR ◽  
M. RODRIGO ◽  
A. MARTÍNEZ
Keyword(s):  
Experimental Data ◽  
Heat Resistance ◽  
Mathematical Models ◽  
Bacillus Stearothermophilus ◽  
Combined Effect ◽  
The Other ◽  
Distilled Water ◽  
Effect Of Ph ◽  
Food Extract ◽  
The One

The combined effect of pH and temperature on the heat resistance of Bacillus stearothermophilus spores heated in an extract of complex food was studied. The results showed that, in general, reducing the pH reduced the heat resistance of the spores. Similarly, the value for the D parameter in the nonacidified extract was between 30 and 70% lower than the one obtained with double-distilled water. This result once again shows the importance of the substrate in inactivation studies of microorganisms. The experimental data were used to carry out a comparison of two predictive mathematical models of inactivation, one based on a multiparametric regression obtained in this study and the other obtained from the bibliography and based on a linear-Bigelow equation. Both models predict reasonably well, although the multiparametric model presented a slightly better accuracy factor (1.11) than the one obtained with the linear-Bigelow equation (1.13).

scholarly journals The plastico-viscous deformation of right circular cylinders of soft metal under variable load axially directed

1934 ◽  
Vol 233 (721-730) ◽  
pp. 217-245
Keyword(s):  
The Other ◽  
Circular Cylinders ◽  
Variable Load ◽  
Similar Nature ◽  
Viscous Deformation ◽  
Standard Of Comparison ◽  
Soft Metal ◽  
The Subject ◽  
The Many ◽  
The One

1. Soft metals are of service to man in many ways, extended use following each advance in knowledge. The present investigation had its origin in an attempt to account analytically for the many apparently irreconcilable properties exhibited by right circular cylinders of soft copper when subjected to appreciable strain under heavy crushing loads. During the course of the work it became clear that if advance at all were to be made general methods of analysis would require to be adopted ; and that results forthcoming would be applicable to materials, of a similar nature, other than the one directly used as a standard of comparison. The presentation of the subject matter has accordingly been arranged to give prominence to theoretical and rational aspects, references to experiment being rather for comparison than for support to the argument. Two publications will be found of service in the present connection, the one illustrative of a cogent point in the theory, the other descriptive of practice. They will be referred to as I, and II, respectively.

scholarly journals Putting Biomedical Ontologies to Work

2010 ◽  
Vol 49 (02) ◽  
pp. 135-140 ◽  
Author(s):  
M. Brochhausen ◽  
B. Smith
Keyword(s):  
Experimental Data ◽  
General Trend ◽  
Information Resources ◽  
The Other ◽  
Ontology Development ◽  
Biomedical Ontologies ◽  
Snomed Ct ◽  
User Friendliness ◽  
Cross Domain ◽  
The One

Summary Objectives: Biomedical ontologies exist to serve integration of clinical and experimental data, and it is critical to their success that they be put to widespread use in the annotation of data. How, then, can ontologies achieve the sort of user-friendliness, reliability, cost-effectiveness, and breadth of coverage that is necessary to ensure extensive usage? Methods: Our focus here is on two different sets of answers to these questions that have been proposed, on the one hand in medicine, by the SNOMED CT community, and on the other hand in biology, by the OBO Foundry. We address more specifically the issue as to how adherence to certain development principles can advance the usability and effectiveness of an ontology or terminology resource, for example by allowing more accurate maintenance, more reliable application, and more efficient interoperation with other ontologies and information resources. Results: SNOMED CT and the OBO Foundry differ considerably in their general approach. Nevertheless, a general trend towards more formal rigor and cross-domain interoperability can be seen in both and we argue that this trend should be accepted by all similar initiatives in the future. Conclusions: Future efforts in ontology development have to address the need for harmonization and integration of ontologies across disciplinary borders, and for this, coherent formalization of ontologies is a prerequisite.

Phases of hormone action

1926 ◽  
Vol 22 (3) ◽  
pp. 354-355
Author(s):  
R. Luria
Keyword(s):  
Experimental Data ◽  
Salivary Glands ◽  
The Body ◽  
The Other ◽  
Hormone Action ◽  
Series Of Experiments ◽  
Set Up ◽  
The One

Phases of hormone action. Proceeding from the provisions of the Kraus school, which established the value of electrolytes as a factor determining the course of life processes in the body, on the one hand, and on the basis of experimental data on the antagonism between insulin and adrenaline, on the other, V.M. Kogan, Kamenev and Mants (Pr. Doctor, 1925, No. 5) set up a series of experiments to study the effect of increments on the separation of the salivary glands in various combinations of insulin, adrenaline and electrolytes K and Ca.

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