XIV. Determinations of the magnetic inclination and force in the British provinces of Nova Scotia and New Brunswick, in the summer of 1847

1848 ◽  
Vol 138 ◽  
pp. 203-211
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Total Force ◽  
Horizontal Force ◽  
Mean Values ◽  
Temperature Coefficients ◽  
Magnetic Inclination ◽  
The Mean ◽  
Small Building ◽  
Made In

In an excursion in the provinces of Nova Scotia and New Brunswick in August and September 1847, 1 took with me some magnetical instruments, with which I made a few observations for determining the magnetic intensity. The observations were of two kinds; those for the relative total force, made with a pair of Lloyd needles, which I shall designate L(1) and L(2), and an inclination circle, seven inches in diameter, with two verniers reading to single minutes, constructed by Barrow, successor to Robinson; and those for the absolute horizontal force, made with a unifilar magnetometer by Jones. The positions of the needles in the inclination circle are determined by two reading microscopes with micrometer scales. The unifilar has a theodolite base and circle of six inches, divided on silver, and reading to twenty seconds. Both instruments are described in Captain Riddell’s “Supplement” to his “Magnetical Instructions.” Observations to determine the temperature coefficients of the Lloyd needles were made in a small building fastened with nothing but copper, and containing a copper stove. For the weights sent by the maker with these needles, which were inconvenient, I substituted two platinum weights, which have never been removed from the holes in which they were placed before my observations commenced. Using t, t', v, v', θ, θ', φ, φ' for the temperatures, the angles of deflection, the inclinations, and the relative forces, respectively, at low and high temperatures, the following Table exhibits the observations and results by the well-known formula φ = Cos v /Sin ( θ + v ). I find the results the same whether the mean values of t , v , and θ , &c. are used to obtain φ and φ' , or a mean of the daily results is taken.

scholarly journals Determinations of the magnetic inclination and force in the British Provinces of Nova Scotia and New Brunswick in the summer of 1847

1851 ◽  
Vol 5 ◽  
pp. 751-751
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Total Force ◽  
Horizontal Force ◽  
Magnetic Inclination ◽  
The Absolute

The observations recorded in this paper are of two kinds; first, those for the relative total force, which were made with - pair of Lloyd needles and an inclination-circle, seven inches in diameter, with two verniers reading to single minutes; and secondly, those for the absolute horizontal force made with a unifilar magnetometer. After a detailed description of these instruments, the results of the observations are given, occupying several pages of tables.

PREDATION BY INSECTS AND SPIDERS INHABITING COLONIAL WEBS OF HYPHANTRIA CUNEA

1972 ◽  
Vol 104 (8) ◽  
pp. 1197-1207 ◽  
Author(s):  
R. F. Morris
Keyword(s):  
Population Dynamics ◽  
Nova Scotia ◽  
North America ◽  
Population Density ◽  
New Brunswick ◽  
Numerical Response ◽  
Initial Number ◽  
Hyphantria Cunea ◽  
The North ◽  
The Mean

AbstractThe number of predators inhabiting nests of Hyphantria cunea Drury was recorded annually for 13 years in four areas in New Brunswick and two areas on the coast of Nova Scotia. The most common groups were the pentatomids and spiders, which sometimes reproduced within the nests, but the mean number per nest was low in relation to the number of H. cunea larvae in the colonies. The rate of predation on fifth-instar larvae was low. Small or timid predators appeared to prey largely on moribund larvae or small saprophagans during the principal defoliating instars of H. cunea.No relationship could be detected between the number of larvae reaching the fifth instar and the number of predators in the colony; nor could any functional or numerical response of the predators to either the initial number of larvae per colony or the population density of colonies be found. It is concluded that the influence of the nest-inhabiting predators is small and relatively stable, and may be treated as a constant in the development of models to explain the population dynamics of H. cunea.H. cunea is a pest in parts of Europe and Asia, where it has been accidentally introduced from North America. The introduction to other continents of the North American predator, Podisus maculiventiis (Say), is discussed briefly.

Changing Special Education Practice: Law, Advocacy, And Innovation

1990 ◽  
Vol 9 (2) ◽  
pp. 65-78 ◽  
Author(s):  
Gordon L. Porter ◽  
Diane Richler
Keyword(s):  
Special Education ◽  
Nova Scotia ◽  
School Districts ◽  
New Brunswick ◽  
Integrated Education ◽  
Education Practice ◽  
Application Of Law ◽  
Collaborative Action ◽  
School Programs ◽  
Made In

The development of integrated school programs in Canadian schools is described. The article identifies three factors that have produced progress which is unique to Canada (i.e., the application of law, advocacy, and innovation). The legal factors are linked to the Charter of Rights and Freedoms, the Schools Act in New Brunswick, and two cases, the Elwood case in Nova Scotia and the Robichaud case in New Brunswick. Developments in New Brunswick since the passage of Bill 85 in 1986 that mandates integration are recounted. Advocacy is described in relation to the vision parents have articulated for their children's futures and the collective and individual advocacy of those committed to integrated education. The innovative changes made in a number of schools and school districts and factors linked to districts that have implemented innovative programs are described. Recommendations are made for collaborative action by parents and professionals to achieve exclusionary school programs.

scholarly journals An explanation of criticisms on Dr. S. Chapman's recent paper, “An outline of a theory of magnetic storms.”

1920 ◽  
Vol 96 (679) ◽  
pp. 426-428
Keyword(s):  
Magnetic Storm ◽  
Mean Value ◽  
Horizontal Force ◽  
High Latitudes ◽  
Mean Values ◽  
Primary Object ◽  
Difference Of Opinion ◽  
Sudden Commencements ◽  
Rule Set ◽  
The Mean

Criticism of Dr. Chapman was not the primary object of my paper, and it would seem that I have studied brevity too much in referring to differences which to myself were conspicuous. That fault I shall hope to repair now. But first I should make it clear that there are certain points about which there is, I think, no difference of opinion. Our knowledge of magnetic storm phenomena in high latitudes is very limited, but in low and moderate latitudes the following phenomena in the variations of H (horizontal force) during storms having Sc’s (sudden commencements) have been, I think, generally recognised for many years. The result of the Sc movement or movements is almost invariably to enhance H, and a marked fall does not as a rule set in immediately. This rule is not absolutely without exception. For instance, on the occasion of the very large storm on August 11-12 of the present year, a large reverse movement set in so soon after the Sc that the mean values alike for the first hour, the first half hour, and even the first quarter hour of “storm time” are much below the pre-storm value. Still exceptions are rare, and the mean value of H for the first hour or half hour after the Sc is nearly always in excess of the pre-storm value.

HYPERPARASITISM IN POPULATIONS OF HYPHANTRIA CUNEA

1976 ◽  
Vol 108 (7) ◽  
pp. 685-687 ◽  
Author(s):  
R. F. Morris
Keyword(s):  
Nova Scotia ◽  
Population Density ◽  
New Brunswick ◽  
Parasite Species ◽  
Hyphantria Cunea ◽  
The Mean

AbstractFour of the parasite species attacking Hyphantria cunea Drury spin their cocoons inside the colonial web of the host, where they are exposed to attack by five species of hyperparasites. Percentage hyperparasitism was measured over a 15-year period in permanent study areas in New Brunswick and Nova Scotia. The mean percentage was about 50%, with very wide variations from year to year. These variations were not related to the population density of H. cunea or its parasites and no model for hyperparasite-parasite interaction could be constructed.

scholarly journals Lightness, chroma, and hue distributions in natural teeth measured by a spectrophotometer

2017 ◽  
Vol 11 (01) ◽  
pp. 036-040 ◽  
Author(s):  
Teuta Pustina-Krasniqi ◽  
Kujtim Shala ◽  
Gloria Staka ◽  
Teuta Bicaj ◽  
Enis Ahmedi ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Lateral Incisor ◽  
Central Incisor ◽  
Tooth Color ◽  
Mean Values ◽  
Color Differences ◽  
Natural Teeth ◽  
The Mean ◽  
Clinically Significant ◽  
Made In

ABSTRACT Objective: The aim of the study was to analyze the distribution of color parameters, lightness (L*), chroma (C), hue (H), a* and b*, in the intercanine sector in maxilla. Material and Methods: Patients' tooth color measurements were performed using an intraoral spectrophotometer VITA Easyshade® (VITA Zahnfabrik H. Rauter GmbH and Co. KG, Bad Sackingen, Germany). The measurements were made in 255 subjects in the intercanine sector in maxilla. Results: The mean values for the group of 255 subjects were as follows: L*, a*, b*, C, and H as 81.6, 0.67, 21.6, 21.7, and 92.7, respectively. For F=206.27 and P < 0.001 between L*, a*, b*, C, H, and central incisor/lateral incisor/canines, there were statistically significant differences. Conclusion: With the statistical analysis, it was determined that there are significant color differences between the teeth of the intercanine sector, which differences are clinically significant also.

IV. Magnetic observations made at Stonyhurst College Observatory, from April 1863 to March 1870

1871 ◽  
Vol 161 ◽  
pp. 69-75
Keyword(s):  
Royal Society ◽  
Continuous Series ◽  
Horizontal Force ◽  
Single Observation ◽  
Mean Values ◽  
The Third ◽  
The Earth ◽  
Magnetic Elements ◽  
The Mean ◽  
Residual Errors

Results of Seven Years' Observations of the Pip and Horizontal Force . In a paper published in the Philosophical Transactions for 1863, the President of the Royal Society enters into a discussion of a six years’ series of the Kew Magnetic Observations, with the view of ascertaining whether the sun’s position with reference to the earth really produces a sensible semiannual inequality in the terrestrial magnetic elements. The probability of the existence of such a disturbing cause, founded on a comparison of the monthly determinations of the Dip and Horizontal Force taken at Hobarton and at Toronto, was made much more evident by Sir Edward Sabine’s discussion of the Kew observations; and it was from a desire of bringing more data to bear upon this important question that the reduction of the seven years’ observations, just completed at this observatory, has been undertaken. With this object in view, it was considered of great importance to adhere closely to the plan laid down by Sir Edward Sabine, and to present the results, for the sake of comparison, in three Tables. The first contains the mean monthly determinations of the elements, with their deduced mean values and secular variation, the second presents a view of the semiannual inequality, and the third gives the residual errors and the consequent most probable errors of any single observation and of the deduced mean values of the elements. Magnetic observations were first taken at Stonyhurst in 1858, but the continuous, series of monthly determinations of the Dip, Declination, and Intensity were only commencedin March 1863. The same instruments, i. e . a dip-circle by Barrow and a Jones unifilar, have been used throughout the whole seven years. These instruments were both tested at Kew before being sent to this observatory, and the dip-circle was again examined there last January with most satisfactory results. The constants of the vibration-magnet were determined by Mr. W else, and are given in the Proceedings of the Royal Society for February 1865. In calculating the value of the Horizontal Force, it has never been found necessary to apply any correction for the arc of vibration, which has always been small, nor for the Frodsham chronometer, whose rate has never exceeded 2 s per day.

scholarly journals XXIII.—On the Horizontal Force of the Earth's Magnetism

1861 ◽  
Vol 22 (3) ◽  
pp. 511-565 ◽  
Author(s):  
John Allan Broun
Keyword(s):  
Royal Society ◽  
Horizontal Force ◽  
Mean Intensity ◽  
Temperature Coefficients ◽  
The Individual ◽  
Made In

The only observations made with Dr Lloyd's bifilar magnetometer, published with corrections applied to the individual observations, are those made in the Makerstoun Observatory, forming part of the Transactions of the Royal Society of Edinburgh. The results obtained from these observations (especially from those for 1844 and 1845), were first compared by me in 1856, with observations (also corrected by myself) made in the Trevandrum Observatory during the same years. The singular resemblance of the variations of daily mean intensity thus discovered at two places so distant, and so differently situated on the earth's surface, induced me to undertake the considerable labour of determining the temperature coefficients, and of correcting and discussing all the published (and some unpublished) observations made in the colonial observatories. This labour was too great to have been undertaken by me alone, in consistence with my other duties, and it is due to the liberality of His Highness the Rajah of Travancore, that I could employ in part for this work the computers attached to his Observatory.

TRACE ELEMENTS IN SOME NEW BRUNSWICK SOILS

1965 ◽  
Vol 45 (3) ◽  
pp. 305-310 ◽  
Author(s):  
E. W. Presant ◽  
W. M. Tupper
Keyword(s):  
Trace Elements ◽  
New Brunswick ◽  
Soil Profiles ◽  
Mean Values ◽  
Trace Element Study ◽  
Copper Zinc ◽  
The Mean ◽  
Sulphide Deposits ◽  
Iron Manganese ◽  
Element Study

A trace element study was carried out on 71 well-drained Podzol soil profiles from the Bathurst region of northeastern New Brunswick. Of these profiles 18 were selected from soils located above sulphide deposits; the other 53 were chosen randomly from areas not underlaid by sulphide-rich rocks. Lead, copper, zinc, iron, manganese, arsenic, antimony, silver, and tin were the elements studied.Lead, silver, and manganese showed definite tendencies to accumulate in the surface L–H horizons. Tin was the only element to consistently show concentrations in the Ae horizons. Arsenic, iron, and lead have accumulated in the B horizons of most profiles. The mean amounts of trace elements for all horizons of the profiles overlying sulphide deposits were higher than similar mean values for profiles above non-mineralized bedrock.

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