scholarly journals II. Magnetic survey of the east of France in 1869

1872 ◽  
Vol 162 ◽  
pp. 7-27
Keyword(s):  
Accurate Determination ◽  
Magnetic Survey ◽  
Sources Of Information ◽  
The West ◽  
Mean Values ◽  
The City ◽  
Central Station ◽  
Previous Occasion ◽  
Made In

This survey, which occupied a considerable portion of the months of August and September 1869, is a continuation of the series of observations made in the west of France during the preceding year. The instruments used were the same on both occasions, the only changes made for the second expedition being (1°) the substitution of a theodolite by Jones in lieu of Cooke’s transit-theodolite, which was slightly too heavy for carrying in the hand, and (2°) the procuring, through the kindness of Dr. Stewart, a second tripod stand similar to our own, which rendered the series of observations with two observers much more rapid than on the previous occasion. The observations were undertaken, as before, by the Rev. W. Sidgreaves and myself, the Vibrations and Deflections falling to his share, and the Declination and Chronometer comparisons remaining in my hands, whilst the Dip was in general observed by both. The method of reduction is almost identical with that adopted for the observations taken in the west of France. The geographical positions of the different stations have been calculated, as far as possible, from the data given in the 'Connaissance des Temps,’ but where this could not be done I have had recourse to the most reliable sources of information at my command. For the accurate determination of the positions of Mont Rolland (near Dôle), of N. D. de Myans (near Chambéry), of Mongré (near Villefranche-sur-Soane), of Iseure (near Moulins), and of our station at Marseilles I am indebted to the kindness of the Rev. N. Larcher, S. J., Membre de la Société Météorologique de France. The coordinates of Vaugirard were readily obtained from a good map of Paris, and for Issenheim and Monaco I have to depend on Cassini’s ‘Carte Générale de la France’ and on Philip’s 'Imperial Atlas.’ The Imperial Observatory at Paris is chosen as the natural position for the origin of coordinates, in lieu of our central station of observation at Vaugirard, which lies on the outskirts of the city; the resulting mean values will thus require no correction, and will be immediately comparable with those of most other observers.

Diocletian's Price-Edict at Ptolemais (Cyrenaica)

1955 ◽  
Vol 45 (1-2) ◽  
pp. 106-115 ◽  
Author(s):  
Giacomo Caputo ◽  
Richard Goodchild
Keyword(s):  
Hellenistic Period ◽  
The West ◽  
Italian Government ◽  
Systematic Exploration ◽  
Roman Age ◽  
The City ◽  
Made In ◽  
Late Roman

Introduction.—The systematic exploration of Ptolemais (modern Tolmeita), in Cyrenaica, began in 1935 under the auspices of the Italian Government, and under the direction of the first-named writer. The general programme of excavation took into consideration not only the important Hellenistic period, which gave the city its name and saw its first development as an autonomous trading-centre, but also the late-Roman age when, upon Diocletian's reforms, Ptolemais became capital of the new province of Libya Pentapolis and a Metropolitan See, later occupied by Bishop Synesius.As one of several starting-points for the study of this later period, there was selected the area first noted by the Beecheys as containing ‘heaps of columns’, which later yielded the monumental inscriptions of Valentinian, Arcadius, and Honorius, published by Oliverio. Here excavation soon brought to light a decumanus, running from the major cardo on the west towards the great Byzantine fortress on the east. Architectural and other discoveries made in 1935–36 justified the provisional title ‘Monumental Street’ assigned to this ancient thoroughfare. In terms of the general town-plan, which is extremely regular, this street may be called ‘Decumanus II North’, since two rows of long rectangular insulae separate it from the Decumanus Maximus leading to the West Gate, still erect. The clearing of the Monumental Street and its frontages revealed the well-known Maenad reliefs, attributed to the sculptor Callimachus, a late-Roman triple Triumphal Arch, and fragments of monumental inscriptions similar in character to those previously published from the same area.

scholarly journals III. On the determination, at sea, of the specific gravity of sea-water

1875 ◽  
Vol 23 (156-163) ◽  
pp. 301-308 ◽  
Keyword(s):  
Specific Gravity ◽  
Physical Condition ◽  
Sea Water ◽  
Accurate Determination ◽  
Actual Difference ◽  
Made In

In the investigation of the physical condition of the ocean the accurate determination of the specific gravity of the water holds a first place. The tolerably numerous observations which have been made in this direction, in a more or less connected manner, are sufficient to prove that the density of the water varies, not only with the latitude and longitude, but also with the distance from the surface of the source from which it is taken. This difference of density depends partly on an actual difference in saltness, and partly on a difference in temperature of the water.

scholarly journals On phenomena relating to the spectra of hydrogen and helium

1916 ◽  
Vol 93 (646) ◽  
pp. 27-28
Keyword(s):  
Accurate Determination ◽  
Principal Series ◽  
Black Body ◽  
Black Body Radiation ◽  
Balmer Series ◽  
Mean Values ◽  
Carbon Arc ◽  
The Mean ◽  
The Individual

In a previous paper the structure of broadened spectrum lines was investigated by a method involving the use of a neutral-tinted wedge as an accessory to the spectroscope. The present communication deals with a method for the accurate determination of the photographic intensities of spectrum lines and the reduction of such intensities to absolute values by comparison with the continuous black-body radiation of the carbon arc. These methods have been applied to a study of the relative intensity distribution in the spectra of helium and hydrogen under different conditions of excitation. It has been found that under certain specified conditions there is a transfer of energy from the longer to the shorter wave-lengths in any given series, and that, under such conditions, the associated series, and in particular the Diffuse series, are relatively enhanced at the expense of the Principal series. It has also been found that the distribution of intensity found in certain celestial spectra can be approximately reproduced in the laboratory. In any attempt to interpret the phenomena observed in connection with the Balmer series of hydrogen, it is necessary to know the particular type to which this series belongs. In order to decide this point a study has been made of the separations of the components of lines of the Balmer series of hydrogen, and the mean values of the separations of the doublets constituting the lines H a and H β have been found to be respectively 0.132 Å.U. and 0.033 Å.U. These values are consistent with the separations appropriate to a Principal series, and the first is in precise agreement with the value deduced by Buisson and Fabry. These results have been obtained by crossing a Lummer Gehrcke plate with the neutral wedge, and submitting the contours obtained to mathematical analysis, by means of which the distribution of intensity in the individual components, and the separation of the components, can be determined.

scholarly journals Discussion on the structure of atomic nuclei

1929 ◽  
Vol 123 (792) ◽  
pp. 373-390 ◽  
Keyword(s):  
Accurate Determination ◽  
Essential Point ◽  
Whole Numbers ◽  
Atomic Nuclei ◽  
Whole Number ◽  
Nuclear Atom ◽  
The Individual ◽  
The Masses ◽  
Made In

Sir Ernest Rutherford: It was on March 19, 1914, that the Royal Society held its last discussion on the constitution of the atom—just fifteen years ago. I had the honour to open the discussion on that occasion, and the other speakers were Mr. Moseley, Profs. Soddy, Nicholson, Hicks, Stanley Allen, S. P. Thomp­son. In my opening remarks I put forward the theory of the nuclear atom and the evidence in support of it, while Mr. Moseley gave an account of his X-ray investigations, which defined the atomic numbers of the elements, and showed how many gaps were present between hydrogen number 1 and uranium number 92. Prof. Soddy drew attention to the existence of isotopes in the radioactive series, and also to a remarkable observation by Sir Joseph Thomson and Dr. Aston, who had obtained two parabolas in the positive ray spectrograph of neon, and he suggested that possibly the ordinary elements might also consist of mixture of isotopes. I think you will find that the remarks and suggestions made in this discussion fifteen years ago have a certain pertinence to-day. In particular Hicks and Stanley Allen drew attention to the importance of taking into account the magnetic fields in the nucleus, although at that time we had very little evidence on that point, and even to-day our information is very scanty. What has been accomplished in the intervening period ? On looking back we see that three new methods of attack on this problem have been developed. The first, and in some respects the most important, has been the proof of the isotopic constitution of the ordinary elements, and the accurate determination of the masses or weights of the individual isotopes, mainly due to the work of Dr. Aston. This has led in a sense to an extension of the original ideas of Moseley. The experiments of the latter fixed the number of possible nuclear charges, while Aston has shown that there are a large number of species of atoms each defined by its nuclear charge, although their masses and their nuclear constitution may be different. The essential point brought out in the earlier work of Dr. Aston was that the masses of the elements are approxi­mately expressed by whole numbers, where oxygen is taken as 16—with the exception of hydrogen itself. But the real interest, as we now see it, is not the whole number rule itself, but rather the departures from it.

scholarly journals On a relation between the refractive and dispersive constants of the inert gases

1927 ◽  
Vol 114 (769) ◽  
pp. 659-661
Keyword(s):  
Accurate Determination ◽  
Inert Gases ◽  
Critical Temperatures ◽  
Philosophical Magazine ◽  
Empirical Relations ◽  
Five Elements ◽  
Made In

In 1911 I published in the ‘Philosophical Magazine’ a paper on new determinations of some constants of the inert gases, and drew attention to the remarkable empirical relations which subsist between (1) the calculated numbers of “dispersion” electrons in the atoms of these five elements, (2) their “viscosity diameters” as determined by Prof. A. O. Rankine, and (3) their critical temperatures. Since that time the figures used have undergone revision. The accurate determination of the value of ε by Millikan has enabled us to give absolute, instead of relative, values to the apparent numbers of dispersion electrons ( q , see Table I). Chapman has recalculated the viscosity diameters, and Rankine has revised Chapman’s values, in the light of corrections to be made in his own values of Sutherland’s constants for argon, krypton and xenon. But these alterations have not affected the validity of the relations then published.

scholarly journals III. Magnetic survey of the West of France, 1868

1870 ◽  
Vol 160 ◽  
pp. 33-50 ◽  
Keyword(s):  
Magnetic Survey ◽  
The West ◽  
Magnetic Elements ◽  
Similar Survey

The Magnetic Survey of the West of France, of which the following is a report, was undertaken by the Rev. W. Sidgreaves and myself at the request of the authorities of Stonyhurst College, who generously undertook to defray all the expenses of the expedi­tion. A similar survey of the East of France will be made during the coming autumn, so as to complete the series of observations of the magnetic elements for the whole of France. The instruments employed were those which have been in constant use at Stonyhurst Observatory for the determination of the monthly absolute values of the Dip, Declination, and Intensity. They consisted of a dip-circle by Barrow, No. 32, a unifilar by Jones, and Frodsham’s marine chronometer, No. 3148. A beautiful transit-theodolite and an aneroid barometer were kindly placed at our disposal by the late Mr. Cooke.

scholarly journals A perceptual-behavioural approach with non-parametric experimental coefficient for urban parking business design

2016 ◽  
Vol 37 (1) ◽  
pp. 15-30 ◽  
Author(s):  
Moreno Ferrarese
Keyword(s):  
Urban Areas ◽  
Accurate Determination ◽  
Parking Lots ◽  
Experimental Parameters ◽  
Parking Lot ◽  
Urban Parking ◽  
Integrated Logistics ◽  
The City ◽  
Business Design

Transportation science and integrated logistics of passengers in the cities provide a detailed study of the movements both on entry to the urban areas than within them. Parking lots are, very often, places of exchange between the motorized and the pedestrian or cycling mode, or between individual and collective motorized modes. As the modern urban civilization is known by its impetuous car parking expansion it becomes essential to design the parking lots bearing in mind the needs of those who will really use them and not referring to the political lobbies in the city administration. The study of parking lot in terms of business and financial design, planning and management after the construction needs is a more accurate determination of the experimental parameters, which enable choice of the model to minimize the uncertainty of the data that will define the revenues according to the Project Financing procedures.

scholarly journals Determination of Aristolochic Acids I and II in Brazilian Sugar Cane Spirit Infusions “milhomem” Commonly used in Northeast Brazil as Popular Drinks

Revista Fitos ◽  
2020 ◽  
Vol 14 (01) ◽  
pp. 38-44
Author(s):  
Antonio Jorge Ribeiro Da Silva ◽  
Maria Auxiliadora Coelho Kaplan ◽  
Celuta Sales Alviano ◽  
Daniela Sales Alviano Moreno ◽  
Davi Oliveira e Silva ◽  
...  
Keyword(s):  
Sugar Cane ◽  
High Performance ◽  
Quantitative Estimation ◽  
Scientific Information ◽  
Herbal Products ◽  
Aristolochic Acids ◽  
The Family ◽  
The City ◽  
Made In

Aristolochic acids (AA) are phytochemicals found in plants of the genus Aristolochia belonging to the family Aristolochiaceae. These compounds bear a nitrophenanthrene carboxylic acid skeleton and are reported to be carcinogenic, mutagenic, and nephrotoxic. Sugar cane spirit infusions containing Aristolochia species are commonly used in Brazil as popular drinks, in total absence of scientific information. The presence aristolochic acids was confirmed in samples collected in popular markets of the city of Aracaju, Sergipe, Brazil. The aristolochic acids quantitative estimation was made in five samples of sugar cane spirit infusions obtained from different places of that city and were performed by high-performance liquid chromatography. The samples analyzed contained aristolochic acids I and II in concentrations ranging between 1.96 and 6.10 µg/ml for AA I and 2.22 and 11.55 µg/ml for AA II. The immediate banning of such popular drinks is recommended in view of the danger to ingest aristolochic acids, botanical products containing aristolochic acids or herbal products containing plants belonging to Aristolochiaceae family.          

scholarly journals DETERMINATION OF WATER ACTIVITY, pH, COAGULASE POSITIVE Staphylococcus COUNTS, TOTAL AND FECAL COLIFORM COUNTS IN MINAS MEIA CURA CHEESE SOLD IN STREET MARKETS IN THE SOUTHERN REGION OF THE CITY OF SÃO PAULO

2018 ◽  
Vol 13 (2) ◽  
pp. 201-207
Author(s):  
Claudia Flaborea Favaro ◽  
Marcos Amaku ◽  
Simone De Carvalho Balian ◽  
Evelise Oliveira Telles
Keyword(s):  
Water Activity ◽  
Fecal Coliform ◽  
Southern Region ◽  
Fecal Coliforms ◽  
Mean Values ◽  
Physical Chemical ◽  
Sanitary Conditions ◽  
The City ◽  
Coagulase Positive Staphylococcus

The objective of the present study was to determine the water activity and pH, as well as toenumerate coagulase positive Staphylococcus, total and fecal coliforms in 32 samples ofMinas meia cura cheese purchased in street markets in the southern region of the city of SãoPaulo. In order to classify the product in terms of percentage moisture content, 5 sampleswere submitted to the analysis. Mean values obtained in physical-chemical analyses were 0.96for water activity, 4.91 for pH. These values do not represent obstacles for the multiplication /survival of agents of hygienic-sanitary importance in the product. Considering that the meanmoisture level was 40.31%, this cheese is classified as presenting medium moisture,according to the regulation RDC no.12. In the analyses performed, 40.62 % (13/32) of thesamples presented fecal coliform counts above the standard determined by the regulation, and28.12% (9/32) of them were above the standard for coagulase positive Staphylococcus. Itshould be pointed out that 3 (9.37%) of the samples were above the standards for bothanalyses. Thus, 19 (59.38%) samples were considered to be inadequate for consumptionbecause they presented at least one of the microbiological requirements above the legalstandards determined for the product, and therefore, were classified as “products ininadequate sanitary conditions”.

scholarly journals Derivation of the Rotational Frequency of Massive Stars from Seismic Studies

2004 ◽  
Vol 215 ◽  
pp. 199-204 ◽  
Author(s):  
C. Aerts ◽  
R. Scuflaire ◽  
A. Thoul
Keyword(s):  
Main Sequence ◽  
High Spatial Resolution ◽  
Massive Stars ◽  
Accurate Determination ◽  
Rotation Frequency ◽  
Rotational Frequency ◽  
Current Status ◽  
B Stars ◽  
Made In

In this contribution we review the current status of the determination of the rotational frequency in non-radially pulsating B stars, i.e. β Cep stars and slowly pulsating B stars. Considerable progress is currently being made in the understanding of the non-radial oscillations of main-sequence B stars by means of high-temporal, high-spatial resolution spectroscopic time series. This has led to the detection of frequency multiplets, which are interpreted as rotationally splitted non-radial modes and which allow an accurate determination of the surface rotational frequency in some stars. We outline how our future goal, i.e. the derivation of the internal rotation frequency, can be achieved.

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