The Boston Marine Society, 1754--1812
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PUMP STATION MECHANIC I/II DEFINITION to Perform Semi-Skilled and Skilled Work in the Installation Maintenance and Repair Of
PUMP STATION MECHANIC I/II DEFINITION To perform semi-skilled and skilled work in the installation maintenance and repair of pumps, motors, chain drives, valves and related equipment; and to do related work as required. DISTINGUISHING CHARACTERISTICS Pump Mechanic I: This is the entry level class in the Pump Mechanic series. Positions in this class normally perform beginning level mechanical repair and maintenance work on a wide variety of wastewater and storm water lift station and equipment. Under this class, individuals employed at the entry level (Pump Mechanic I) may, based on the acquisition of higher skill levels through training and experience, become eligible for promotion to the Pump Mechanic II position. This promotion would be based on satisfactory demonstration of skills through examination or certification from an accepted organization, training institution, or school and demonstrated ability to perform high level maintenance and repairs on City pump stations. Particular skill areas of interest are installation and maintenance of telemetry systems, computerized pump control systems and pump preventative maintenance programs. Pump Mechanic II: This is the journey level class in the Pump Mechanic series. Positions assigned to this class are flexibly staffed and are expected to perform the most skilled repair and maintenance work and have a thorough knowledge of the operational characteristics, maintenance and repair methods and techniques and most typical system difficulties for the full range of equipment and operational systems in a lift station. All positions assigned to this class require the ability to work independently, exercising judgment and initiative. Pump Station Mechanics II may also be expected to assist in the oversite of less experienced personnel. -
High Pressure Pumps
HIGH PRESSURE PUMPS 120 INDUSTRIAL DR. SLIDELL, LOUISIANA 70460 USA P: 985.649.3000 | F: 985.649.4300 THOMASPUMP.COM HIGH PRESSURE PUMPS T-GTO / T-GTO XD / T-GEAR T-GTO / T-GTO XD / T-GEAR are high pressure pumps designed for critical applications, making them the most reliable high-pressure pumps in the marketplace. FIELDS OF APPLICATION T-GTO / T-GTO XD / T-GEAR • Sanitation Cleaning • Paper Mill Showering • Truck Cleaning Facilities • Brine Injection • Environmental Waste Disposal • Boiler Feed • Mill De-scaling • Oil and Gas DESIGN T-GTO series is a heavy duty oil lubricated Pitot tube T-GTO XD series has been developed for low flow, high pump designed for critical applications making it the most pressure applications. The Pitot tube design produces a reliable high-pressure pump in the marketplace. stable, pulsation free flow. The ability to operate with low minimum flow makes the pump suitable for a wide variety With a full range of capacities from 30-400 GPM (6-100 of applications, within its performance envelope. m3hr) and pressures reaching 1600-psi (110 bar) the T-GTO offers a variety of pump choices. A robust power frame, features that include only two basic working parts: T-GEAR series is a single-stage, parallel shaft speed 1) a rotating case and 2) a stationary pick-up tube, and a increaser. Heat dissipation is from a dynamically balanced mechanical seal that only seals against suction pressure, fan blowing across the finned gearbox casing. The design ensure pump reliability in the most demanding applications. is for horizontal installation only. -
Cyclic Hydraulic Actuation for Soft Robotic Devices
2016 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) Daejeon Convention Center October 9-14, 2016, Daejeon, Korea Cyclic Hydraulic Actuation for Soft Robotic Devices Robert K Katzschmann, Austin de Maille, David L Dorhout, Daniela Rus Abstract— Undulating structures are one of the most diverse Soft Body and successful forms of locomotion in nature, both on ground Pressurized Liquid and in water. This paper presents a comparative study for actuation by undulation in water. We focus on actuating a 1DOF systems with several mechanisms. A hydraulic pump attached to a soft body allows for water movement between two inner Deflection cavities, ultimately leading to a flexing actuation in a side-to- side manner. The effectiveness of six different, self-contained designs based on centrifugal pump, flexible impeller pump, Cyclic Actuator external gear pump and rotating valves are compared. These hydraulic actuation systems combined with soft test bodies were De-Pressurized Liquid then measured at a lower and higher oscillation frequency. The deflection characteristics of the soft body, the acoustic noise of the pump and the overall efficiency of the system Fig. 1: Cyclic hydraulic actuation of a soft body through an are recorded. A brushless, centrifugal pump combined with a actuator producing undulating motions. novel rotating valve performed at both test frequencies as the most efficient pump, producing sufficiently large cyclic body deflections along with the least acoustic noise among all pumps tested. An external gear pump design produced the largest body and compact actuation with long endurance for soft fluidic deflection, but consumes an order of magnitude more power actuators [1]. -
Customizing a Self-Healing Soft Pump for Robot
ARTICLE https://doi.org/10.1038/s41467-021-22391-x OPEN Customizing a self-healing soft pump for robot ✉ Wei Tang 1, Chao Zhang 1 , Yiding Zhong1, Pingan Zhu1,YuHu1, Zhongdong Jiao 1, Xiaofeng Wei1, ✉ Gang Lu1, Jinrong Wang 1, Yuwen Liang1, Yangqiao Lin 1, Wei Wang1, Huayong Yang1 & Jun Zou 1 Recent advances in soft materials enable robots to possess safer human-machine interaction ways and adaptive motions, yet there remain substantial challenges to develop universal driving power sources that can achieve performance trade-offs between actuation, speed, portability, and reliability in untethered applications. Here, we introduce a class of fully soft 1234567890():,; electronic pumps that utilize electrical energy to pump liquid through electrons and ions migration mechanism. Soft pumps combine good portability with excellent actuation per- formances. We develop special functional liquids that merge unique properties of electrically actuation and self-healing function, providing a direction for self-healing fluid power systems. Appearances and pumpabilities of soft pumps could be customized to meet personalized needs of diverse robots. Combined with a homemade miniature high-voltage power con- verter, two different soft pumps are implanted into robotic fish and vehicle to achieve their untethered motions, illustrating broad potential of soft pumps as universal power sources in untethered soft robotics. ✉ 1 State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, China. email: [email protected]; [email protected] NATURE COMMUNICATIONS | (2021) 12:2247 | https://doi.org/10.1038/s41467-021-22391-x | www.nature.com/naturecommunications 1 ARTICLE NATURE COMMUNICATIONS | https://doi.org/10.1038/s41467-021-22391-x nspired by biological systems, scientists and engineers are a robotic vehicle to achieve untethered and versatile motions Iincreasingly interested in developing soft robots1–4 capable of when the customized soft pumps are implanted into them. -
A Record of the Services of the Commissioned Officers and Enlisted
6-F : A RECORD OF THE SERVICES COMMISSIONED OFFICEKS AND ENLISTED MEN KITTERY AND ELIOT. MAINE, Who served their Country on land and sea in the American Revolution, from 1775 to 1783. BOSTON Alfred Mddge & Son, Printers, 24 Franklin Street. A^Jt.T mo i. Cheeked dCLIBP. 4 OR, LENOX AND EN FOUNDATIONS. L To the Men of Kittery who gave their lives on land and sea, in battle or in prison, from 1775 to 1783, that this country might be free, and that their example may speak to com- ing generations, this volume is respectfully inscribed. By Lieut. OLIVER P. REMICK, Engineer Corps, U. S. Revenue Cutter Service. Member of the Maine Historical Society and the Maine Genealogical Society. PREFACE. Kittery, at the commencement of the war for Independence, was composed of the present towns of Kittery and Eliot, and this record takes in the soldiers and sailors of both towns ; but Eliot's soldiers are not mentioned as such in their individual records, but one can tell by the parish or militia company residence of the man, in which town as now constituted he lived ; whenever the word "town" occurs in the following pages, it refers to and means the old town of Kittery as it was in 1775. The town at that time was divided into three parishes, viz., first, or lower ; second, or upper ; and third, or middle. The first parish was that part of the town south of a line, commencing at Ports- mouth Ferry, near the old Rice House, and running north fifty-four degrees east, to the town of York. -
Sweet Auburn, Fall 2013
Sweet Auburn Magazine of the Friends of Mount Auburn | Fall 2013 The Art of Memory: Monuments Through Time Fall 2013 | 1 President’sSweet Auburn Corner A publication of the President’s Corner Friends of Mount Auburn Cemetery Many of the pleasures of Mount Auburn are ephemeral, 580 Mount Auburn Street from the brightly-plumaged warblers and vibrant flowers Cambridge, MA 02138 of the spring to the spectacular foliage of the fall. But one 617-547-7105 johnston Jennifer by photo www.mountauburn.org feature remains constant throughout the year–the monuments Editorial Committee erected in the landscape to honor the memory of those buried here. These monuments, ranging from inscribed flat memorials Bree D. Harvey, Editor Vice President of Cemetery & Visitor Services to tall and grand works of sculptural art, appear to be solid Jennifer J. Johnston, Managing Editor unmoving stone, but they have lives of their own, both in Webmaster, Media & Imaging Coordinator the stories they tell and in their presence in the landscape David P. Barnett, Contributing Editor around them. Their stories live on through the research Dave Barnett President & CEO, Mount Auburn Cemetery and educational efforts of our historical collections staff Steve Brown / Preservation Craftsperson and volunteers, while their physical presence lives on through the work of our preservation Jessica Bussmann / Education & Volunteer Coordinator staff. In this issue, we explore the meaning and challenges of maintaining these monuments Jane M. Carroll / Vice President of Development of Mount Auburn and introduce you to the staff responsible for preserving them. We also Dennis Collins / Horticultural Curator provide examples of how new monuments continue to enhance the landscape as new memories and traditions are added to the collection that make the Cemetery a visible Candace Currie / Director of Planning & Sustainability representation of remembrance and love for those who have passed. -
Nathaniel Bowditch from Wikipedia, the Free Encyclopedia
Nathaniel Bowditch From Wikipedia, the free encyclopedia Nathaniel Bowditch (1773-1838), American mathematician and actuary Bowditch is often credited as the founder of modern maritime navigation. Born March 26, 1773 Salem, Province of Massachusetts Bay Died March 16, 1838 (aged 64) Boston, Massachusetts, U.S. Occupation Mathematician, ship's captain, and actuary Spouse(s) Elizabeth Boardman Bowditch, Mary Polly Ingersoll Bowditch Nathaniel Bowditch was an early American mathematician remembered for his work on ocean navigation. He is often credited as the founder of modern maritime navigation; his book The New American Practical Navigator, first published in 1802, is still carried on board every commissioned U.S. Naval vessel. In 2001, an elementary and middle school in Salem was named in his honor. Life and work Nathaniel Bowditch, the fourth of seven children, was born in Salem, Province of Massachusetts Bay, to Habakkuk Bowditch, a cooper, and Mary (Ingersoll) Bowditch. At the age of ten, he was made to leave school to work in his father's cooperage, before becoming indentured at twelve for nine years as a bookkeeping apprentice to a ship chandler. In 1786, age fourteen, Bowditch began to study algebra and two years later he taught himself calculus. He also taught himself Latin in 1790 and French in 1792 so he was able to read mathematical works such as Isaac Newton's Philosophiae Naturalis Principia Mathematica. He found thousands of errors in John Hamilton Moore's The New Practical Navigator; at eighteen, he copied all the mathematical papers of the Philosophical Transactions of the Royal Society of London. -
MOUNT AUBURN CEMETERY Page 1 United States Department of the Interior, National Park Service National Register of Historic Places Registration Form
NATIONAL HISTORIC LANDMARK NOMINATION NFS Form 10-900 USDI/NPS NRHP Registration Form (Rev. 8-8 OMB No. 1024-0018 MOUNT AUBURN CEMETERY Page 1 United States Department of the Interior, National Park Service National Register of Historic Places Registration Form 1. NAME OF PROPERTY Historic Name: Mount Auburn Cemetery Other Name/Site Number: n/a 2. LOCATION Street & Number: Roughly bounded by Mount Auburn Street, Not for publication:_ Coolidge Avenue, Grove Street, the Sand Banks Cemetery, and Cottage Street City/Town: Watertown and Cambridge Vicinityj_ State: Massachusetts Code: MA County: Middlesex Code: 017 Zip Code: 02472 and 02318 3. CLASSIFICATION Ownership of Property Category of Property Private: X Building(s): _ Public-Local: _ District: X Public-State: _ Site: Public-Federal: Structure: _ Object:_ Number of Resources within Property Contributing Noncontributing 4 4 buildings 1 ___ sites 4 structures 15 ___ objects 26 8 Total Number of Contributing Resources Previously Listed in the National Register: 26 Name of Related Multiple Property Listing: n/a NFS Form 10-900 USDI/NPS NRHP Registration Form (Rev. 8-86) OMB No. 1024-0018 MOUNT AUBURN CEMETERY Page 2 United States Department of the Interior, National Park Service National Register of Historic Places Registration Form 4. STATE/FEDERAL AGENCY CERTIFICATION As the designated authority under the National Historic Preservation Act of 1966, as amended, I hereby certify that this ___ nomination ___ request for determination of eligibility meets the documentation standards for registering properties in the National Register of Historic Places and meets the procedural and professional requirements set forth in 36 CFR Part 60. -
Liminal Encounters and the Missionary Position: New England's Sexual Colonization of the Hawaiian Islands, 1778-1840
University of Southern Maine USM Digital Commons All Theses & Dissertations Student Scholarship 2014 Liminal Encounters and the Missionary Position: New England's Sexual Colonization of the Hawaiian Islands, 1778-1840 Anatole Brown MA University of Southern Maine Follow this and additional works at: https://digitalcommons.usm.maine.edu/etd Part of the Other American Studies Commons Recommended Citation Brown, Anatole MA, "Liminal Encounters and the Missionary Position: New England's Sexual Colonization of the Hawaiian Islands, 1778-1840" (2014). All Theses & Dissertations. 62. https://digitalcommons.usm.maine.edu/etd/62 This Open Access Thesis is brought to you for free and open access by the Student Scholarship at USM Digital Commons. It has been accepted for inclusion in All Theses & Dissertations by an authorized administrator of USM Digital Commons. For more information, please contact [email protected]. LIMINAL ENCOUNTERS AND THE MISSIONARY POSITION: NEW ENGLAND’S SEXUAL COLONIZATION OF THE HAWAIIAN ISLANDS, 1778–1840 ________________________ A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTERS OF THE ARTS THE UNIVERSITY OF SOUTHERN MAINE AMERICAN AND NEW ENGLAND STUDIES BY ANATOLE BROWN _____________ 2014 FINAL APPROVAL FORM THE UNIVERSITY OF SOUTHERN MAINE AMERICAN AND NEW ENGLAND STUDIES June 20, 2014 We hereby recommend the thesis of Anatole Brown entitled “Liminal Encounters and the Missionary Position: New England’s Sexual Colonization of the Hawaiian Islands, 1778 – 1840” Be accepted as partial fulfillment of the requirements for the Degree of Master of Arts Professor Ardis Cameron (Advisor) Professor Kent Ryden (Reader) Accepted Dean, College of Arts, Humanities, and Social Sciences ii ACKNOWLEDGEMENTS This thesis has been churning in my head in various forms since I started the American and New England Studies Masters program at The University of Southern Maine. -
Review Article
Review Article GHRISTON ARCHER Voyages of the "Columbia" to the Northwest Coast 1787-1790 and 1790- 1793, edited by Frederic W. Howay. Portland: Oregon Historical Society Press, 1990. xxvii, 518 pp. $40.00 U.S. cloth. The republication of Judge Frederic W. Howay's 1941 work on the voy ages of Columbia Rediviua and the sloop Washington occurs at a time of heightened bicentennial interest in the early explorations of the Northwest Coast. Although additional documents and many studies have appeared in the nearly half century since Howay compiled the two logs of Robert Haswell, John Hoskin's narrative, John Boit's log, and many supporting documents from the expeditions, the volume retains its importance as a primary source on the American explorations into the treacherous waters and diplomacy of the Northwest Coast and the difficulties for entre preneurs involved in the trans-Pacific trade in sea otter skins. Of great importance, perhaps even beyond Howay's own interest in the native cultures, the American accounts provide significant information on the Northwest Coast cultures and the shocks to their societies provoked by the European commercial activities. Despite the existence of good documentation by their subordinates, Captains John Kendrick and Robert Gray were both enigmatic figures whose goals and ideas remain unclear. Neither of the commanders kept personal journals to explain their motives, and both were highly control versial in important parts of their Northwest Coast adventures. Like many other captains involved in North Pacific exploration, John Kendrick was an impractical dreamer whose ideas led to inevitable financial disasters and conflicts rather than to the formation of a new commercial empire. -
Cole, Douglas. Sigismund Bacstrom's Northwest Coast Drawings and An
Sigismund Bacstrom's Northwest Coast Drawings and an Account of his Curious Career DOUGLAS COLE Among the valuable collections of British pictures assembled by Mr. Paul Mellon is a remarkable series of "accurate and characteristic original Drawings and sketches" which visually chronicle "a late Voyage round the World in 1791, 92, 93, 94 and 95" by one "S. Bacstrom M.D. and Surgeon." Of the five dozen or so drawings and maps, twenty-nine relate to the northwest coast of America. Six pencil sketches of northwest coast subjects, in large part preliminary versions of the Mellon pictures, are in the Provincial Archives of British Columbia, while a finished watercolour of Nootka Sound is held by Parks Canada.1 Sigismund Bacstrom was not a professional artist. He probably had some training but most likely that which compliments a surgeon and scientist rather than an artist, His drawings are meticulous and precise, with great attention to detail and individuality. He was not concerned with the representative scene or the typical specimen. In his native portraits he does not tend to draw, as Cook's John Webber had done, "A Man of Nootka Sound" who would characterize all Nootka men; Bacstrom drew Hatzia, a Queen Charlotte Islands chief, and his wife and son as they sat before him on board the Three Brothers in Port Rose on Friday, 1 March 1793. The strong features of the three natives are neither flattered nor romanticized, and while the picture may not be "beautiful," it possesses a documentary value far surpassing the majority of eighteenth-century drawings of these New World natives. -