scholarly journals II. Experimental research on the electromotive force from difference of potential during diffusion in tidal streams

1884 ◽  
Vol 37 (232-234) ◽  
pp. 28-35
Keyword(s):  
Fresh Water ◽  
Experimental Research ◽  
Electromotive Force ◽  
Quantitative Measurement ◽  
The Other ◽  
Tidal Stream ◽  
Tidal Streams ◽  
Set Up ◽  
A Current

An examination of the composition of the waters throughout the length of a tidal stream during diffusion of salt and fresh water consequent on tidal action, reveals a very considerable difference in the proportion of saline constituents between the water at the surface and that at the bottom, during certain times of tide this difference amounting sometimes to near 100 per cent., and it may frequently be either much greater or less according to tidal fluctuations. This fact constitutes the basis of the investigation which the author undertook, to obtain some approximate quantitative measurement of the resultant electromotive force, &c., arising from such difference of potential. It is known that a current is set up when a bar or plate of the same metal is immersed in two dissimilar solutions in contact, one capable of acting readily upon the metal, the other having little or no action on it, the whole forming a circuit.

scholarly journals I. The action of tidal streams on metals during diffusion of salt and fresh water. Experimental research. Part II (gravimetric)

1885 ◽  
Vol 38 (235-238) ◽  
pp. 372-378
Keyword(s):  
Fresh Water ◽  
Experimental Research ◽  
Royal Society ◽  
Electromotive Force ◽  
Present Communication ◽  
Tidal Estuaries ◽  
Electrical Part ◽  
Tidal Streams ◽  
One Year

In a paper last session “On the Electromotive Force during Diffusion in Tidal Streams” (see “Proceedings Royal Society,” No. 232), the author recorded the electrical part of this investigation. The present communication contains the concluding gravimetric experiments of the research. The effects attending the diffusion of the salt and fresh water in tidal estuaries, on parts of the same metal, were estimated in each case for a period of one year , during which the metals were constantly exposed to conditions of galvanic action similar to those obtaining in some tidal streams.

Papers read to the Society, November 16, 1899

1900 ◽  
Vol 65 (413-422) ◽  
pp. 433-433
Keyword(s):  
Experimental Research ◽  
Electrical Resistance ◽  
Electromotive Force ◽  
Quantitative Measurement ◽  
Potential Difference ◽  
Pelvic Plexus ◽  
Especial Reference ◽  
Theory Of Evolution ◽  
Earthquake Motion

I. “Note on the Electromotive Force of the Organ Shock, and on the Electrical Resistance of the Organ, in <italic>Malapterurus electricus</italic>” By Professor F. Gotch, F. R. S., and G. J. Burch. II. "On the Formation of the Pelvic Plexus, with especial Reference to the Nervus Collector, in the Genus <italic>Mustelus</italic>." By R. O. Punnett. Communicated by Dr. Gadow, F. R. S. III. “On the Least Potential Difference required to produce Discharge through various Gases.” By the Hon. R. J. Strutt. Communicated by Lord Rayleigh, F. R. S. IV. “Mathematical Contributions to the Theory of Evolution. VII — On certain Formulae in the Theory of Correlation, and their Application to the Inheritance of Characters not capable ot Quantitative Measurement.” By Professor Karl Pearson, F. R. S. V. “On the Propagation of Earthquake Motion to Great Distances" By R. D. Oldham. Communicated by Sir R. S. Ball, F. R. S. VI. “An Experimental Research on some Standards of Light. By J. E. Petavel. Communicated by Lord Rayleigh, F. R. S.

scholarly journals On the structure and functions of tubular and cellular polypi, and of asidiæ

1837 ◽  
Vol 3 ◽  
pp. 268-270
Keyword(s):  
Fresh Water ◽  
Opposite Direction ◽  
Sea Water ◽  
The Other ◽  
Perfect Health ◽  
Southern Coast ◽  
Regular Shape ◽  
The One ◽  
Structure And Functions ◽  
A Current

This paper contains the account of a great number of observations made by the author during the last summer, while he was at the southern coast of England, on several species of Sertulariæ , Plumulariæ , Tubulariæ , Campanulariæ , Flustræ , and other polypiferous zoophytes, and also on various Ascidiæ . Each specimen was placed for examination in a glass trough with parallel sides, before the large achromatic microscope of the author, directed horizontally; and care was taken to change the sea-water frequently, which was done by means of two syphons, the one supplying fresh water, while the other carried off the old; a plan which succeeded in keeping the animals in perfect health and vigour. The drawings which were taken of the appearances that presented themselves were traced with a cameralucida, slid over the eye-piece of the microscope. In a specimen of the Tubularia indivisa , when magnified 100 times, a current of particles was seen within the tube, strikingly resembling, in the steadiness and continuity of its stream, the vegetable circulation in the Chara . Its general course was parallel to the slightly spiral lines of irregular spots on the tube; on one side flowing from, and on the other towards, the polypus, each current occupying one half of the circumference of the tube. The particles were of various sizes, some very small, others larger, but apparently aggregations of the smaller: a few were nearly globular, but in general they had no regular shape. At the knots, or contracted parts of the tube, slight vortices were observed in the current; and at the ends of the tube the particles were seen to turn round, and pass over to the other side. Singular fluctuations were also observed in the size of the stomach and of the cavity of the mouth; the one occasionally enlarging, while the other contracted, as if produced by the passage of a fluid from the one into the other and its subsequent recession, thus distending each alternately. This flux and reflux took place regularly at intervals of 80 seconds; besides which two currents were continually flowing, both in the mouth and stomach; an outer one in one direction, and an inner one in the opposite direction.

scholarly journals Effectiveness of Think-Pair-Square Strategy on Students’ Reading Comprehension

2016 ◽  
Vol 6 (2) ◽  
pp. 41
Author(s):  
Warno Edi
Keyword(s):  
Reading Comprehension ◽  
Experimental Research ◽  
Learning Process ◽  
Quantitative Measurement ◽  
The Other ◽  
Seventh Grade ◽  
Significant Difference ◽  
Academic Year

This research is about the effects of Think-Pair-Square (TPR) strategy on the reading comprehension of Seventh grade students’ at SMPN 16 Batam. It is purpose to find out the effect of TPR strategy on the reading comprehension. To achieve the objectives of the research, the researcher conducted experimental research. This experimental research was held at SMPN 16 Batam. The population in this research is all students of eight grade students at SMPN 16 in academic year 2014/2015. The researcher conducted research in one class. The first class is (VII.4) was as experimental class. The experimental class was taught reading descriptive text using TPR strategy. In analyzing the data, the researcher used a quantitative measurement to find the result. The analysis of the data showed that there was a significant difference of the students’ achievement before conducted treatment 62.17 for experimental class. The average of the students’ achievement after conducted treatment in experimental class was 87.33. The implication of this research seems to be applicable for seventh grade students. This strategy encouraged the students to be more active during the learning process. The suggestion is the students should know about this strategy. It will make easier while learning if they understand about the rule and procedure. To the other research, the researcher expects to understand well about this strategy in order to make easy for doing further research. Based on this finding, it can be concluded that the use of TPR strategy give significant effect in reading comprehension than the use of other conventional method.Keywords: TPR strategy, reading comprehension, experimental research

Rem Study of Current Effect on the Structure of Clean Si(111) Surface

1990 ◽  
Vol 48 (1) ◽  
pp. 306-307
Author(s):  
A. Yamanaka ◽  
H. Ohse ◽  
K. Yagi
Keyword(s):  
The Other ◽  
Current Direction ◽  
Clean Surface ◽  
Current Effect ◽  
Atomic Steps ◽  
Step Bunching ◽  
Terrace Width ◽  
Step Down ◽  
A Current

Recently current effects on clean and metal adsorbate surfaces have attracted much attention not only because of interesting phenomena but also because of practically importance in treatingclean and metal adsorbate surfaces [1-6]. In the former case, metals deposited migrate on the deposit depending on the current direction and a patch of the deposit expands on the clean surface [1]. The migration is closely related to the adsorbate structures and substrate structures including their anisotropy [2,7]. In the latter case, configurations of surface atomic steps depends on the current direction. In the case of Si(001) surface equally spaced array of monatom high steps along the [110] direction produces the 2x1 and 1x2 terraces. However, a relative terrace width of the two domain depends on the current direction; a step-up current widen terraces on which dimers are parallel to the current, while a step-down current widen the other terraces [3]. On (111) surface, a step-down current produces step bunching at temperatures between 1250-1350°C, while a step-up current produces step bunching at temperatures between 1050-1250°C [5].In the present paper, our REM observations on a current induced step bunching, started independently, are described.Our results are summarized as follows.(1) Above around 1000°C a step-up current induces step bunching. The phenomenon reverses around 1200 C; a step-down current induces step bunching. The observations agree with the previous reports [5].

Doctrine and Dialectic in Plato’s Dialogues

2018 ◽  
Author(s):  
Rachana Kamtekar
Keyword(s):  
Methodological Approach ◽  
The Other ◽  
Set Up

Chapter 1 lays out the methodological approach employed throughout the book, which is to pay attention to the dialectical dependence of what the main speaker in the dialogue says on the intellectual problem(s) set up in the dialogue both by himself and the other speakers. To illustrate, Chapter 1 describes Socrates’ use of the method of hypotheses from the Meno and Phaedo to answer questions that go beyond his claims to knowledge in the Republic.

scholarly journals Preparation of alcohol-based handrub in COVID-19 Alsatian cluster

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Elodie Di-Falco ◽  
Johan Bourbon ◽  
Isalyne Sbaffe ◽  
Jean-Daniel Kaiser
Keyword(s):  
Critical Period ◽  
Hospital Management ◽  
Management Team ◽  
The Other ◽  
Packaging Materials ◽  
Local Production ◽  
Technical Grade ◽  
Hand Sanitizer ◽  
Set Up ◽  
Real Challenge

AbstractAlsace, in particular Haut-Rhin, is one of the main clusters of COVID-19 in France. There has been a shortage of essential supplies in the area, especially alcohol-based hand sanitizer. In this context, and in accordance with the decree dated March 6, 2020, our hospital management team asked us to start local production of alcohol-based handrub. This was a real challenge: In one week, we had to implement the production of handrub to meet the needs of a 1,400-bed hospital. The production had to comply with the French preparation guidelines and take place on specific premises, with qualified and calibrated equipment, by qualified staff, under the supervision of a pharmacist. The other big challenge we faced was the supply of pharmaceutical raw and packaging materials. During this particular critical period, all suppliers were out of stock. Here, we describe the organizational set-up and the decisions made, e. g., to use technical-grade ethanol before the publication of the decrees dated March 13 and March 23, 2020.

scholarly journals Astronomy to understand a human environment

1998 ◽  
Vol 162 ◽  
pp. 211-213
Author(s):  
S. Isobe
Keyword(s):  
School System ◽  
Environmental Science ◽  
The Other ◽  
Human Environment ◽  
Science Courses ◽  
The Public ◽  
Global Environmental Problems ◽  
Global Environmental ◽  
Set Up ◽  
School Period

Astronomy is an important science in understanding a human environment. However, it is thought by most politicians, economists, and members of the public that astronomy is a pure science having no contribution to daily human activities except a few matters relating to time. The Japanese government is studying a reorganisation of our school system to have 5 school days per week, instead of 6 days per week, and this July its committee made a recommendation to reduce school hours for science and set up new courses for practical computers and environmental science. I currently made a proposal. It is very difficult for most of the school pupils, who will have non-scientific jobs, to understand science courses currently taught in school, because each science is taught independently from the other sciences. Therefore, their knowledge of sciences obtained during their school period does not greatly help their understanding of global environmental problems.

Statics Analysis of the Mechanical Model of Nucleosome

2011 ◽  
Vol 343-344 ◽  
pp. 661-667 ◽  
Author(s):  
Yun Xue ◽  
De Wei Weng ◽  
Gang Ming Gong
Keyword(s):  
Mechanical Model ◽  
The Other ◽  
Elastic Rod ◽  
Equilibrium Equations ◽  
Constraint Force ◽  
Precession Angle ◽  
Nutation Angle ◽  
Analytic Expression ◽  
Set Up ◽  
Calculated Analysis

Mechanical model of nucleoside and its equilibrium equations are set up, and the mechanical properties on the equilibrium position are analyzed. In the case constraint force and electrostatic attraction between cylinder OH and elastic rod are balanced, the analytic expression of nutation angle of the section and its conditions of existence are given. It is show that the cylinder OH can maintain equilibrium at any range of the precession angle. In the other case when unbanced, there is phenomenon of separation of elastic rod from cylinder OH in the spiral wound 2 circles, and numerical solution of the precession angle at separation points are calculated. Analysis of equilibrium of cylinder H1 illustrates that the generatrix of cylinder H1 and OH are not parallel, and the angle between them is obtained

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