Anaerobic performance in ice hockey : the effect of skate blade radius of hollow

The purpose of the study was to investigate the effect of skate blade radius of hollow (ROH) on anaerobic performance, specifically during the acceleration and stopping phases of an on-ice skating test. Fifteen, male Junior B hockey players (mean age 19 y ± 1.46) were recruited to participate. On-icc testing required each participant to complete an on-ice anaerobic performance test [Reed Repeat Skate (RRS)) on three separate days. During each on-ice test, the participant's skate blades were sharpened to one of three, randomly assigned, ROH values (0.63 cm, 1.27 cm, 1.90 cm). Performance times were recorded during each RRS and used to calculate anaerobic variables [anaerobic power (W), anaerobic capacity (W), and fatigue index (s, %)). Each RRS was video recorded for the purpose of motion analysis. Video footage was imported into Peak Motus™ to measure kinematic variables of the acceleration and stopping phases. The specific variables calculated from the acceleration phase were: average velocity over 6 m (m/s), average stride length (m), and mean stride rate (strides/s). The specific variables calculated from the stopping phase were: velocity at initiation of stopping (rn/s), stopping distance (m), stopping time (s). A repeated measures ANOV A was used to assess differences in mean performance and kinematic variables across the three selected hollows. Further analysis was conducted to assess differences in trial by trial performance and kinematic variables for all hollows. The primary findings of the study suggested that skate blade ROH can have a significant effect on kinematic variables, namely stride length and stride rate during the acceleration phase and stopping distance and stopping time during the stopping phase of an on-ice anaerobic performance test. During the acceleration phase, no significant difdifferences were found in SR and SL across the three selected hollows. Mean SR on the 1.27 cm hollow was significantly slower than both the 0.63 cm and 1.90 cm hollows and SL was significantly longer when skating on the 1.27 cm hollow in comparison to the 1.90 cm hollow. During the stopping phase, stopping distance on the 0.63 cm hollow (4.12 m ± 0.14) was significantly shorter than both the 1.27 cm hollow (4.43 m ± 0.08) (p < 0.05) and the 1.90 cm ho])ow (4.35 m ± 0.12) (p < 0.05). Mean ST was also significantly shorter when stopping on the 0.63 cm hollow then both the 1.27 cm and 1.90 cm hollows. Trial by trial results clearly illustrated the affect of fatigue on kinematic variables; AV, SR, IV decreased from trial 1 to 6. There was no significant effect on anaerobic performance variables during the RRS. Altering the skate blade ROH has a significant and practical affect on accelerating and stopping performance will be discussed in this paper.

An analysis of the photoelectron and Rydberg states of formaldehyde /|nby Carol R. Lessard. -- 260 St. Catharines [Ont.] : Dept. of Chemistry, Brock University,

Although it is generally accepted that Rydberg orbitals are very large and diffuse, and that electron promotion to a Rydberg orbital is not too different from ionization of the molecule, analysis of the two types of transitions proves otherwise. The photoelectron spectrum of the 2B2 (n) ion has very little vibrational structure attached to the origin band; on the other hand, several of the Rydberg transitions which involve the promotion of the n(bZ) electron exhibit a great deal of vibrational activity. In particular, the members of the n=3 Rydberg\ series interact with and perturb each other through pseudo-Jahn-Teller vibronic coupling. The vacuum ultraviolet spectrum contains a number of features which are difficult to explain, and two unusually sharp bands can only be identified as representing some form of electron promotion in formaldehyde.

Second Welland Canal - Book 3, Survey Map 21 - Village of Port Colborne

Survey map of the Second Welland Canal created by the Welland Canal Company showing the areas in and around Port Colborne. Identified structures associated with the Canal include Lighthouse, Pier Light, Old Lock House, Collector's Office, Harbour Master's House, Canal Boundary, Back Ditch, Reserved Back Ditch, Basin, Light-Keeper's House and Ferry Recess. The surveyors' measurements and notes can be seen in red and black ink and pencil. Local area landmarks and businesses are also identified and include Gordon's Woodyard, Welland Rail Road, Welland Railway Elevator and Proposed Elevator, W.R.R. Flour Shed, Roman Catholic Church, School House, Sandhills, Lake Erie, and the High Water Mark. Streets running parallel to Canal include King St., West St., East St., Queen St., Hamilton St., and the Road Allowance are labelled. Streets running perpendicular to Canal include Kent St., Victoria St., Adelaide St., SugarLoaf St., George St., Alexandrina St., William St., Fort Erie St., Lake Rd., and New Road to Dutch Settlement are also labelled. Property owners and leasers as well as buildings on lots are also idenitified and noted as follows: Adams estate, J. Towhig, J.C. Kerr, Mrs. Hill, S. Cooke, Mrs. Yocum, W.T. Cooke, P. Wintermute, J. Shickluna, William Cooke, J. McChesney, John Beatty, W. Robertson, John Gordon, T. Armstrong, John Harper, George Keefer, Estate of James Black, Thomas Park, N. Higgins, S. Hopkins, and L.G. Cartier. Map of the Village of Port Colborne. Being Lot No. 27 and part of Lot No. 28 in the 1st Con. Township of HUMBERSTONE. Scale 2 Chs. per Inch. land shaded in RED Owned by DEPT. Do. Do. BLUE Sold to the COUNTY of WELLAND

Welland Canal Survey of Lands Nathan Pawling 1826; includes map and text.

Survey map and description of Nathan Pawling's land created by The Welland Canal Company. Included is a written description of the land along with a drawing of the land. Noteable features include; the dock, pier and tow path. The original bed of 12 mile creek is also noted on the map. Surveyor notes are seen in pencil on the map. The map notes the division of land between Pawling and Robert Brown's land. Click on 'detail' to see Map.

London Gazette, 1812

The London Gazette, originally called The Oxford Gazette, was first published in 1665, making it the world's oldest continuously published newspaper. This government paper, which contains official dispatches of Great Britain during peace time and war, provides a mix of State intelligence, government notices and trade/business news. Articles also discussed anything from naval operations, royal appointments, state visits, to military reports from Generals. The paper was and still is said to be published "with Authority". This issue was printed by Robert George Clarke, Cannon-Row, Parliament-Street.