8 resultados para Electric transformers -- Equipment and supplies

em Brock University, Canada


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List entitled “Total amount of ½ September paid” includes tax and supplies prices, n.d.

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Walter D’Arcy Ryan was born in 1870 in Kentville, Nova Scotia. He became the chief of the department of illumination at the General Electric Company of Schenectady, New York. He was a founder in the field of electrical illumination. He built the electric steam scintillator which had numerous nozzles and valves. The operator would release steam through the valves. The nozzles all had names which included: Niagara, fan, snake, plume, column, pinwheel and sunburst. The steam scintillator was combined with projectors, prismatic reflectors, flashers and filters to produce the desired effects. In 1920 a group of businessmen from Niagara Falls, New York formed a group who called themselves the “generators’. They lobbied the American and Canadian governments to improve the illumination of the Falls. They were able to raise $58, 000 for the purchase and installation of 24 arc lights to illuminate the Falls. On February 24th, 1925 the Niagara Falls Illumination Board was formed. Initially, the board had a budget of $28,000 for management, operation and maintenance of the lights. The power was supplied free by the Ontario Power Company. They had 24 lights installed in a row on the Ontario Power Company surge tank which was next to the Refectory in Victoria Park on the Canadian side. The official opening ceremony took place on June 8th, 1925 and included a light parade in Niagara Falls, New York and an international ceremony held in the middle of the Upper Steel Arch Bridge. Walter D’Arcy Ryan was the illuminating engineer and A.D. Dickerson who was his New York field assistant directed the scintillator. with information from American Technological Sublime by David E. Nye and the Niagara Falls info website Location: Brock University Archives Source Information: Subject Headings: Added Entries: 100 Ryan, W. D’A. |q (Walter D’Arcy), |d 1870-1934 610 General Electric Company 650 Lighting, Architectural and decorative 650 Lighting |z New York (State) |z Niagara Falls 700 Dickerson, A.F. 700 Schaffer, J.W. Related material held at other repositories: The Niagara Falls Museum in Niagara Falls, Ontario has a program (pamphlet) dedicating new lighting in 1958 and it has postcards depicting the illumination of the Falls. Some of Ryan’s accomplishments can be seen at The Virtual Museum of the City of San Francisco. Described by: Anne Adams Date: Sept 26,Upper Steel Arch Bridge. Walter D’Arcy Ryan was the illuminating engineer and A.D. Dickerson who was his New York field assistant directed the scintillator. with information from American Technological Sublime by David E. Nye and the Niagara Falls info website

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A survey of predominantly industrial silicon carbide has been carried out using Magic Angle Spinning nuclear magnetic resonance (MAS nmr); a solid state technique. Three silicon carbide polytypes were studied; 3C, 6H, and 15R. The 13C and 29 Si MAS nmr spectra of the bulk SiC sample was identified on the basis of silicon (carbon) site type in the d iff ere n t pol Y t Y pes • Out to 5.00 A fro mac en t r a lsi 1 i con (0 r carbon) atom four types of sites were characterized using symmetry based calculations. This method of polytype analysis was also considered, in the prelminary stages, for applications with other polytypic material; CdBr 2 , CdI 2 , and PbI 2 " In an attempt to understand the minor components of silicon carbide, such as its surface, some samples were hydrofluoric acid washed and heated to extreme temperatures. Basically, an HF removable species which absorbs at -110 ppm (Si0 2 ) in the 29 Si MAS nmr spectrum is found in silicon carbide after heating. Other unidentified peaks observed at short recycle delays in some 29 Si MAS nmr spectra are considered to be impurities that may be within the lattice. These components comprise less than 5% of the observable silicon. A Tl study was carried out for 29 Si nuclei in a 3C ii polytype sample, using the Driven Equilibrium Single-Pulse Observation of T1 (DESPOT) technique. It appears as though there are a number of nuclei that have the same chemical shift but different T1 relaxation times. The T1 values range from 30 seconds to 11 minutes. Caution has to be kept when interpreting these results because this is the first time that DESPOT has been used for solid samples and it is not likely in full working order. MAS nmr indicates that the 13C and 29 Si ~sotropic chemical shifts of silicon carbide appear to have a reciprocal type of relationship_ Single crystal nmr analysis of a 6H sample is accordance with this finding when only the resultant isotropic shift is considered. However, single crystal nmr also shows that the actual response of the silicon and carbon nuclear environment to the applied magnetic field at various angles is not at all reciprocal. Such results show that much more single crystal nmr work is required to determine the actual behavior of the local magnetic environment of the SiC nuclei.

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Single crystals of (Bal - xKx)Fe2As2 were prepared using the Sn flux method. Two heating methods were used to prepare the single crystals: the slow heating and rapid heating methods. It was found that the single crystals grown using the slow heating method were not superconducting due to a significant loss of potassium. When the rapid heating method was used, the single crystals were observed to be superconducting with the desired potassium concentration. The energy dispersive X-ray spectroscopy analysis indicated the presence of multiple phases in the single crystals. Using single crystal X-ray diffraction, the crystal structure of the single crystals was found to be 14/mmm tetragonal at room temperature. The magnetic measurements on the single crystals indicated the presence of multiple phases and magnetic impurities.

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The equipment and store room of Brock's Physical Education Complex.

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Transcript [original spelling and grammar retained]: Albany June 28 1812 Sir Your letter of the 23d has been received. I had anticipated your request by ordering the detachment from Washington, Essex, Clinton and Franklin Counties into service and have fixed the days and places of their Rendezvous. Upon application to the quarter master General I find there are but 139 tents & 60 camp kettles at this place & even those I take by a kind of stealth. The Deputy Quarter Master General declines giving an order for their delivery until he shall have a written order from the Quarter Master General, and the latter is willing I Shall take them but will not give the Deputy a written order for that purpose. Under Such circumstances I shall avail myself of the rule of Possession and by virtue of the Eleven Points of Law Send them tomorrow morning without a written order from anyone. You may remember that when you were Secretary of the war department I invited you to forward and deposit in our Frontier Arsenals, arms ammunition and camp equipage free of expense to be ready in case of war and the same invitation to the war department has been repeated some time, Since The United States have now from 5 to 600 regular troops at Plattsburgh, Rome, Canandaigua & c, where those arsenals are, and yet those recruits are now and must be for weeks to come unarmed and unequipped in every respect although within musket Shot of arsenals. The recruits at Plattsburgh are within 50 miles of two tribes of Canadian Indians. In case of an attack upon the Frontiers that portion of the United States army would be as inefficient and unable to defend the inhabitants or themselves even. The Militia Detachments on the Western Frontiers received the news of war with [cherafulness] and determined courage, and I am happy to find they are united late brothers, highly improved in Discipline & ready to devote themselves to any Service or danger which the good of the Country may require. But they are in barracks from which they cannot move a days march for the want of tents and other equipage, and they are in Separate and Independent Detachments without a General Officer to command them or combine their exertions for the accomplishment of any desirable and important object. The only officer of the United States here who can do anything is the Quarter Master General and he has not a tent Camp Kettle or Knapsack in this arsenal except what I have concluded to send off tomorrow morning as above mentioned to furnish men As to Cannon Muskets and Ammunition. I can find now one here who will exercise any authority over them or deliver a Single article upon my requisition. Neither can I find any Officer of the army who feel himself authorized to exercise any authority or do any act which will aid me in the all important object of protecting the Inhabitants of an extended Frontier exposed to the Cruelties of Savages and the depredations of the enemy. If I must rely upon the Militia Solely for Such protection I entreat you to give orders to your Officers to furnish upon my orders, for the use of the Militia Detachments , all needful weapons and articles with which the United States are Supplied and of which we are destitute . You may rely upon all the assistance which my talents, influence or authority can furnish in the active prosecution of the first & necessary way which has been declared by the Constituted Authorities of our beloved Country. I am, Sir, respectfully Your ob. Servt. Daniel D. Tompkins

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This study sought to explore the current state of Grades 4 to 8 science education in Ontario from the perspective of Junior/Intermediate (J/I) teachers. The study’s methodology was a sequential 2-phased mixed methods explanatory design denoted as QUAN (qual)  qual. Data were collected from an online survey and follow-up interviews. J/I teachers (N = 219) from 48 school boards in Ontario completed a survey that collected both quantitative and qualitative data. Interviewees were selected from the survey participant population (n = 6) to represent a range of teaching strategies, attitudes toward teaching science, and years of experience. Survey and interview questions inquired about teacher attitudes toward teaching science, academic and professional experiences, teaching strategies, support resources, and instructional time allotments. Quantitative data analyses involved the descriptive statistics and chi-square tests. Qualitative data was coded inductively and deductively. Academic background in science was found to significantly influence teachers’ reported level of capability to teach science. The undergraduate degrees held by J/I science teachers were found to significantly influence their reported levels of capability to teach science. Participants identified a lack of time allocated for science instruction and inadequate equipment and facilities as major limitations on science instruction. Science in schools was reported to be of a “second-tiered” value to language and mathematics. Implications of this study include improving undergraduate and preservice experiences of elementary teachers by supporting their science content knowledge and pedagogical content knowledge.

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A report of the Directors to the shareholders, it reads "The year 1965 showed a continued trend of decrease in sales. The opening of new wineries in Moose Jaw, Calgary, Nova Scotia and New Brunswick has resulted in a change in wine marketing across Canada and are contributing factors. The Company's sales both retail and wholesale have continued to drop in Ontario, notwithstanding the advertising program undertaken by the Company. This decline is a matter of great concern to the Directors of the Company. Our new package introduced in the late fall of 1965 is now available across Canada which should improve our sales picture during the present year. Net profit is down $19, 000 from 1964, due to increases in the cost of raw materials and supplies and to reduced sales." The directors listed are: John M. Woodbridge, William R. Barnes, A.H. Kidder, P.G.D. Armour, H.M. Pawling, Miss Florence A. Goffin, William D. McLean.