NEW RESULTS ON NONMESONIC WEAK DECAY OF Λ HYPERNUCLEI WITH FINUDA

2010 ◽  
Vol 19 (12) ◽  
pp. 2573-2578
Author(s):  
◽  
S. Bufalino ◽  
E. Botta ◽  
T. Bressani ◽  
F. De Mori ◽  
...  
Keyword(s):  
Systematic Study ◽  
Weak Decay ◽  
The Subject

The FINUDA experiment has performed a systematic study of the NonMesonic Weak Decay (NMWD) of Λ hypernuclei analizing all the data collected from 2003 up to 2007. The results of a measurement of the spectra of protons coming from the NMWD of [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] are the subject of this paper.

scholarly journals Continuidad y cambios en las actividades turísticas de Tijuana, 1920-1949

2018 ◽  
Vol 30 (72) ◽  
Author(s):  
José Alfredo Gómez Estrada ◽  
Josefina Elizabeth Villa
Keyword(s):  
20Th Century ◽  
Systematic Study ◽  
Baja California ◽  
Historical Documents ◽  
Documentary Analysis ◽  
The Subject ◽  
Sexual Services ◽  
Siglo Xx

El estudio sistemático del turismo en Baja California en la primera mitad del siglo XX es todavía una tarea por hacer. Este trabajo, basado en análisis documental, es un primer acercamiento al tema, aunque enfocado en Tijuana. La novedad es la utilización de la prensa estadounidense y mexicana como fuente principal, que se complementa con documentos históricos. Se establecen las características generales de las actividades turísticas en la localidad, se describe y se explica la continuidad y los cambios más importantes ocurridos en el turismo entre 1920 y 1949. Se demuestra que los turistas llegaron en masa y que las apuestas y los juegos de azar atrajeron multitudes. También se documentan los cambios relevantes en el perfil del turista estadounidense y la ampliación de la demanda de servicios sexuales en la década de 1940.Continuity and changes in tourism activities in Tijuana, 1920-1949The systematic study of tourism in Baja California in the first half of the 20th century is still a task to be done. This paper, based on documentary analysis, is a first approach to the subject, although focused on Tijuana. What is the new is the use of the American and Mexican press as the main source, along with historical documents. General characteristics of tourism activities in the locality are established, and continuity and the most important changes taking place in tourism between 1920 and 1949 are described and explained. It was proven that tourists arrived en masse, and betting and gambling attracted crowds. Also, relevant changes in the American tourists profile and the increase in the demand for sexual services in the 1940s are documented.

On the action of certain reagents upon the coloured blood-corpuscles. Part I. The coloured blood-corpuscles of the newt and frog

1883 ◽  
Vol 35 (224-226) ◽  
pp. 114-129
Keyword(s):  
Systematic Study ◽  
Quarterly Journal ◽  
Short Paper ◽  
Considerable Time ◽  
Chemical Constitution ◽  
The Subject

The histological and chemical constitution of the coloured blood-corpuscles of man and other animals has formed a fertile source of investigation for a large number of observers, and it might seem that further investigations on this subject were unnecessary. We have, however, devoted considerable time to a systematic study of the effects of certain reagents upon the blood of the newt and frog which have yielded results, some of them of not a little interest and importance. The literature of the subject, chiefly of the German papers, is given somewhat fully in Rollett’s article, “ Blood,” in Stricker’s “ Histology,” and a careful résumé of most of the more recent and some of the older observations will be found in a short paper by G. F. Dowdeswell, in the “ Quarterly Journal of Microscopical Science ” for 1881. Reference will be made to the literature of each reagent under its appropriate heading.

Resistance to the Systematic Study of Multiple Discoveries in Science

1963 ◽  
Vol 4 (2) ◽  
pp. 237-282 ◽  
Author(s):  
Robert K. Merton
Keyword(s):  
History Of Science ◽  
Systematic Study ◽  
Social Needs ◽  
Influential Paper ◽  
History Of ◽  
The Subject ◽  
Sociological Thought

The pages of the history of science record thousands of instances of similar discoveries having been made by scientists working independently of one another. Sometimes the discoveries are simultaneous or almost so; sometimes a scientist will make anew a discovery which, unknown to him, somebody else had made years before. Such occurrences suggest that discoveries become virtually inevitable when prerequisite kinds of knowledge and tools accumulate in man's cultural store and when the attention of an appreciable number of investigators becomes focussed on a problem, by emerging social needs, by developments internal to the science, or by both. Since at least 1917, when the anthropologist A. L. Kroeber published his influential paper dealing in part with the subject (I) and especially since 1922, when the sociologists William F. Ogburn and Dorothy S. Thomas compiled a list of some 150 cases of multiple independent discoveries and inventions (2), this hypothesis has become firmly established in sociological thought.

scholarly journals Fundamental Problems and Methods in the Study of Religion : A Reply to My Critics

2020 ◽  
Vol 74 (3) ◽  
pp. 277-283
Author(s):  
Markus Altena Davidsen
Keyword(s):  
Systematic Study ◽  
Subject Matter ◽  
The Subject

Abstract In this reply I engage with the response articles by Kocku von Stuckrad, Katja Rakow, Eric Venbrux, Arjan Sterken, and Kees de Groot. Noting where we agree, disagree, and seem to talk past each other, I clarify what I consider to be the subject matter and the fundamental problems and methods in the systematic study of religion.

A discussion on the cytoplasm in variation and development - Enzymic ‘de-adaptation’: the stability of an acquired character on withdrawal of the external inducing stimulus

1958 ◽  
Vol 148 (932) ◽  
pp. 340-352 ◽  
Keyword(s):  
Genetic Control ◽  
Enzyme Induction ◽  
Systematic Study ◽  
Genetic Background ◽  
Enzyme Production ◽  
External Environment ◽  
Clear Cut ◽  
Growth Variation ◽  
The Subject ◽  
The Stability

In most cases of enzymic induction (‘adaptation’) the specifically increased rate of enzyme production evoked by the presence of the inducer in the external environment returns to normal immediately the inducer is removed. However, the situation is not always so clear-cut. The changes in the cell underlying the phenomenon of enzyme induction have long been known to be—from a genetical standpoint—transitory. But the mechanism of enzymic reversion (‘de-adaptation’) has not yet been the subject of much systematic study. Most cell characters presumably have an underlying enzymic basis, and in most cases enzyme induction, even if under some sort of nuclear genetic control which determines its scope, appears to be almost certainly a cytoplasmic function. It therefore seems likely that a study of the specific gain and loss of enzymic function that occurs during enzymic adaptation or de-adaptation will prove to have some bearing on the problems of growth, variation and differentiation under conditions where the genetic background may be supposed to remain constant.

The Application of Latex to Highway and Floor Surfacing

1940 ◽  
Vol 13 (4) ◽  
pp. 979-988
Author(s):  
W. G. Wren
Keyword(s):  
Physical Properties ◽  
Systematic Study ◽  
Small Scale ◽  
Economic Factors ◽  
Kuala Lumpur ◽  
Aluminous Cement ◽  
The Subject ◽  
Materials Used ◽  
The Relationship ◽  
Working Out

Abstract Investigations on the development of latex mixtures for roadways were carried out in Malaya by Hastings during the period 1931 to 1933. Of the different mixtures tried, those containing aluminous cement gave the most promising results. Considerable progress of a practical character in working out the details of a suitable cement-latex mixture was then made, culminating in the laying in 1933 of an experimental section of road 4.5 miles from Kuala Lumpur on the Kuala Lumpur—Port Swettenham Road, where the traffic is fast and fairly heavy. In view of the promising results obtained in these experiments, it was agreed that the subject should be studied further in London, and that particular attention should be given to obtaining a better understanding of the fundamental principles involved in the preparation of latex mixtures for road and floor surfacing. As the economic factors are less exacting for flooring than for highways, it was decided that the application of latex mixtures to flooring should receive prior attention. The main purpose of the investigation has now been fulfilled, and this paper presents a summary of the work carried out and the results obtained. Mixtures of aluminous cement and latex have been in use for some time, both for flooring and other purposes; as early as 1923–4 patents were obtained for mixing cement with specially treated latex. The theory underlying this process is that the cement combines with the water of the latex and becomes hydrated, the latex losing its water and coagulating. How far this occurs in practice was not established at the outset of the work in London, and attempts were made to determine the extent of hydration of the cement and to examine the microstructure of the mixtures. During the course of this work it became apparent that the structure and physical characteristics of the products were largely dependent on the materials used in compounding and especially on the latex stabilizer. A systematic study of the principles underlying the compounding of the mixtures was then undertaken, and the relationship between compounding and physical properties determined. It thus became necessary to develop a series of tests to measure the physical properties, as no suitable methods were available. As a result of these experiments, a number of cement-latex compositions were developed and the most suitable selected for small scale trials. A summary of the work carried out and the conclusions reached are given in the following sections.

THE LAST RESULTS FROM THE FINUDA EXPERIMENT

2013 ◽  
Vol 28 (32) ◽  
pp. 1330029 ◽  
Author(s):  
ALESSANDRO FELICIELLO
Keyword(s):  
Experimental Evidence ◽  
Systematic Study ◽  
Weak Decay ◽  
Magnetic Spectrometer ◽  
Decay Modes ◽  
Extensive Program ◽  
Hypernuclear Physics

FINUDA was a complex magnetic spectrometer installed on the DAΦNE e+e- collider, the Italian ϕ-factory put in operation at the INFN National Laboratories of Frascati, near Rome. It was carefully designed and specially dedicated to an extensive program of hypernuclear physics, mainly focussed on spectroscopy of light Λ-hypernuclei and on systematic study of their decay modes. Among the latest FINUDA results, of particular importance are the first observation of the neutron-rich Λ-hypernucleus [Formula: see text] and the first experimental evidence of the so-called hypernucleus two-nucleon induced non-mesonic weak decay.

The Early Quaker Literature of Defense

1973 ◽  
Vol 42 (2) ◽  
pp. 203-228
Author(s):  
M. G. F. Bitterman
Keyword(s):  
Systematic Study ◽  
The Press ◽  
The Subject ◽  
Liberty Of Conscience ◽  
Established Order ◽  
Established Church

Faced with suspicion, hostility and repression, yet small in number and dedicated increasingly to peaceful principles, the early Quakers had recourse to the press. They published detailed accounts of their persecutions and a large number of purely theological treatises which are relatively well known. They also published a literature of defense which, although widely cited, has not until now been the subject of systematic study. In these tracts they refuted charges that they were emissaries of Rome and enemies of the established order; justified their refusal to do “hat honor”, to take oaths, to pay tithes and to participate in the rituals of an established church; pleaded for liberty of conscience; threatened their opponents with God's wrath; and encouraged each other to stand fast in adversity. The literature of defense grew rapidly in the decade before the Restoration and declined steadily in the decade or so thereafter.

scholarly journals Pedagogical profile of a pupil: occurence vs phenomenon

2019 ◽  
Vol 24 (1) ◽  
pp. 214-223
Author(s):  
Oleksandr Mikhno
Keyword(s):  
Systematic Study ◽  
Comprehensive Analysis ◽  
Educational Process ◽  
Educational Institutions ◽  
Value Judgments ◽  
The Subject ◽  
Definition Of ◽  
Historical Periods ◽  
Pedagogical Science ◽  
Scientific Pedagogical

Based on the analysis and comparison of the concepts «occurrence» and «phenomenon» in philosophy and pedagogy, the pedagogical profile is substantiated as a phenomenon that differs from occurrence by comprehension, analysis, generalizations, and conclusions. It has been substantiated that the phenomenon in pedagogy is an occurrence that: 1) has its own history, 2) is clearly defined, and 3) its existence has an impact on the subjects of the pedagogical process and the development of pedagogical science. It has been proved that the problem of pedagogical characteristics was developed by the leading domestic educators and psychologists of the middle of the XIX — the second half of the XX century. It has been emphasized that the pedagogical profile has been used in the educational process since the beginning of the twentieth century. It has been concluded that, like every scientific pedagogical phenomenon, the pedagogical profile is subject to operationalization and a holistic study with the definition of the subject, object, chronological boundaries, carrying out of the historic and graphical search, coverage of the contribution of scientists — teachers and psychologists — in its development, a comprehensive analysis of the structure, content and the use of characteristics in educational institutions in different historical periods. The author's definition of pedagogical profiles as a phenomenon that appeared in the second half of the nineteenth century and was further developed theoretically and methodically by teachers and psychologists O. Lazursky, S. Rubinstein, B. Baev, V. Sukhomlinsky, and others; it is a kind of text in which the value judgments about a pupil are substantiated; it has a structure of the text-reasoning, in which the traits of character and the personality of the pupil are indicated, the arguments are concrete facts of life, the behavior of the pupil, obtained as a result of a long systematic study of the pupil through observation and special research, and the conclusion — pedagogical recommendations, advice on further work with the pupil.

Determination of Rubber in Rubber-Bearing Plants

1934 ◽  
Vol 7 (1) ◽  
pp. 111-124 ◽  
Author(s):  
D. Spence ◽  
M. L. Caldwell
Keyword(s):  
Quantitative Determination ◽  
Systematic Study ◽  
Plant Tissue ◽  
Extensive Investigation ◽  
Present Communication ◽  
Rubber Content ◽  
Essential Step ◽  
Rubber Bearing ◽  
The Subject

Abstract THE determination of the true rubber content of both raw and manufactured rubber has been the subject of extensive investigation. Search has failed to reveal any corresponding record covering studies applicable to rubber-bearing plants. The authors' investigations, covering such methods as have been published, demonstrate their inaccuracy and inadequacy for practical use. There has never been published, as far as the authors have been able to determine, any thorough, systematic study of the factors which determine the value and accuracy of any method for the quantitative determination of the pure caoutchouc contained in a given specimen of plant tissue. The work embodied in the present communication was undertaken as an essential step towards the solution of some of the complex problems in the production of rubber from the guayule shrub. Without some method for determining with completeness and accuracy in terms of pure caoutchouc the value of any given sample it would have been fruitless to proceed to studies of the metabolism of the plant. The equally important problems in the control of commercial operations, both in field and factory, hinged at the outset on the development of an accurate means to determine the rubber content of the plant.

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