№ files_lp_3_process_9_44066
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Technical engineering report describing the historical development, operating mechanism and zero-dimensional mathematical modeling of gas-fired Helmholtz-type pulse combustors with reference to early experimental discoveries and propulsion applications.
Document Type:
Technical report
Subject:
Pulse combustion technology and mathematical modeling
Field:
Mechanical Engineering
Topic:
Pulse combustor design, operation and analysis
Models Discussed:
Kilicarslan model, Ahrens model, Richard model
Combustor Type:
Gas-fired Helmholtz type pulse combustor
Phenomenon:
Heat-excited acoustic oscillations
Key Historical Figures:
Higgins; Rijke; Lord Rayleigh; Esnault-Pelterie; Marconnet; Paul Schmidt
Historical Application:
German V-1 “buzz” flying bomb during the Second World War
Mathematical Approach:
Zero-dimensional modeling; energy balance; conservation equations
Assumptions:
Ideal gases; constant specific heats; negligible heat and viscous losses
Main Components:
Mixer head; combustion chamber; tailpipe; flapper valves
Purpose:
Study of pulse combustion phenomenon and derivation of operating frequency
Price: 8 / 10 USD
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The product description is provided for reference. Actual content and formatting may differ slightly.
Year:
2026
Region / City:
Minnesota
Theme:
Air Quality Compliance
Document Type:
Compliance/Enforcement Correspondence
Agency:
Minnesota Pollution Control Agency (MPCA)
Audience:
Facilities operating non-class IV waste combustors
Period of validity:
Not specified
Approval Date:
Not specified
Date of amendments:
Not specified
Context:
A form for reporting operating data and calculating applicable operating limits related to air quality performance tests for non-class IV waste combustors, submitted as part of a performance test report.
Document Type:
Certification Application
Program:
Air Quality Permit Program
Form Number:
WC-04
Jurisdiction:
Minnesota
Governing Law:
Minn. Stat. § 13.41
Issuing Agency:
Minnesota Pollution Control Agency
Administering Institution:
Minnesota State College-Southeast Technical (Red Wing, MN)
Processing Fee:
$35
Applicable Facilities:
Class I, II, III, A, C, and Large Hospital Waste Combustors
Eligibility Requirements:
Experience in steam generation or power generation facilities; Minnesota Stationary Engineers licensure (minimum Second Class Engineer, Grade B) or equivalent experience
Data Classification:
Private data until certification; public data upon certification
Organization:
United States Census Bureau
Survey name:
Small Business Pulse Survey (SBPS)
Year launched:
2019
Subject:
Economic impacts of COVID-19 on small businesses
Type of document:
Methodological and data dissemination statement
Data product classification:
Experimental statistics
Publication frequency:
Weekly
Data format:
Graphical online release
Website:
https://www.census.gov/businesspulsedata
Quality standards referenced:
Census Bureau Statistical Quality Standards
Protection standards:
S1 – Protecting Confidentiality; F2 – Providing documentation to support transparency in information products
Methodological features:
Cognitive testing for Survey Phases 1 and 2; publication of response rates; source and accuracy statements; standard errors and coefficient of variation notes
Target audience:
Survey respondents, data users, stakeholders
Year:
2023-24
Region / City:
United States
Topic:
Education, School Staffing, Internet & Technology
Document Type:
Survey Report
Agency / Institution:
National Center for Education Statistics (NCES), U.S. Department of Education
Author:
National Center for Education Statistics (NCES)
Target Audience:
Educational institutions, School administrators
Period of Validity:
2023-24
Approval Date:
June 2023
Date of Changes:
N/A
Year:
2021
Region / City:
Punjab Province
Topic:
Labor Management Procedures
Document Type:
Project Implementation Procedures
Institution:
Government of Punjab
Author:
N/A
Target Audience:
Project stakeholders, government officials, contractors, and workers
Period of Effect:
2021–2025
Approval Date:
December 2021
Date of Amendments:
N/A
Note:
Context
Year:
2024-2025
Region / city:
United States
Topic:
Education, Research, COVID-19 impact
Document type:
Research Proposal, Survey Invitation
Institution:
National Center for Education Statistics (NCES), U.S. Department of Education
Author:
Chris Chapman, Associate Commissioner
Target audience:
School Districts, School Administrators, Education Researchers
Effective period:
2024-2025
Approval date:
October 2023
Revision date:
N/A
Year:
2020
Region / City:
United States
Topic:
Survey methodology and weighting
Document type:
Statistical methodology attachment
Organization:
United States Census Bureau
Author:
United States Census Bureau
Target audience:
Researchers, policymakers, statisticians
Survey levels:
Metropolitan Statistical Areas, State, National
Population groups:
Educational attainment, age, sex, race/ethnicity
Data sources:
2018 American Community Survey, July 2020 population estimates
Adjustment procedures:
Household nonresponse, housing unit counts, adult counts, raking by demographics
Year:
2023
Region / City:
YYZ (Toronto Pearson International Airport)
Topic:
Workplace Injury and Compensation Procedures for Cabin Crew
Document Type:
Safety Bulletin
Organization:
CUPE (Canadian Union of Public Employees)
Author:
CUPE Health & Safety Team
Target Audience:
Air Canada Cabin Crew Members
Period of Validity:
Ongoing
Approval Date:
Not specified
Modification Date:
Not specified
Year:
Not specified
Country:
United States
Issuing Authority:
U.S. Census Bureau
Director:
Robert Santos
Survey Name:
Household Trends and Outlook Pulse Survey (HTOPS)
Document Type:
Survey invitation letter, informational brochure, reminder postcard, and phone call script
Target Audience:
Selected households and adult residents aged 18 or older
Selection Method:
Random address-based sampling
Incentives:
$10 enrollment payment; $5 per completed monthly survey; $2 prepaid cash included
Participation Period:
Up to 3 years
Survey Frequency:
Approximately monthly
Legal Authority:
13 U.S.C. Sections 141, 182, and 193
Privacy Framework:
Privacy Act of 1974 (5 U.S.C. 552a); Title 13 U.S.C. confidentiality provisions
Contact Information:
[email protected]
Note:
; 1-888-595-1334
Official Website:
https://www.census.gov/programs-surveys/htops.html
Year:
2023
Region / City:
Massachusetts
Topic:
VPN Connectivity
Document Type:
Instruction Manual
Organization:
State of Massachusetts
Author:
Unknown
Target Audience:
Users of Pulse Secure VPN in Massachusetts
Period of Validity:
Ongoing
Approval Date:
Not specified
Modification Date:
Not specified
Year:
2026
Organization:
PULSE Accelerator
Document Type:
Email Communication
Audience:
Program Participants
Purpose:
Program Impact Assessment
Topics Covered:
Program Evaluation, Participant Feedback, Business Growth
Follow-Up Period:
Six Months and One Year
Reminder Period:
One Week Before Questionnaire Closure
Year:
2019
Region / City:
Missan, Iraq
Subject:
Optical Fiber Communication
Document Type:
Research Paper
Organization / Institution:
University of Basrah, Ministry of Education
Authors:
M. S. Jasim, H. A. Sultan, C. A. Emshary
Target Audience:
Researchers, Engineers, Academics in Optical Fiber Communication
Period of Action:
Not specified
Approval Date:
Not specified
Date of Modifications:
Not specified
Keywords:
optical fibers, attenuation, dispersion, soliton
Abstract:
Fiber optics being the most important in many of applications like medicine and communication. Many factors affect the light propagation through it, like attenuation, dispersion, and nonlinear effects.
Context Description:
A research paper analyzing the effect of attenuation and dispersion on the propagation of a Gaussian pulse in optical fibers using theoretical simulations.
Year:
Not specified
Region / City:
Not specified
Topic:
Infection control, hospital sanitation, multidrug-resistant microorganisms
Document Type:
Research Table
Institution / Organization:
Not specified
Author:
Not specified
Target Audience:
Researchers, healthcare professionals
Period of Validity:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Keywords:
MDR A. baumannii, ESBL E. coli, ESBL K. pneumoniae, CRE E. coli, MDR P. aeruginosa, PX-UV Disinfection
Year:
2017
Region:
Victoria, Australia
Topic:
Early childhood education assessment
Document type:
Practice principle guide
Framework:
Victorian Early Years Learning and Development Framework
Author:
Department of Education and Training; Dr Anne Kennedy; Anne Stonehouse; Dr Sue Lopez Atkinson
Contributors:
Annette Sax
Institution:
Department of Education and Training, State of Victoria
Intended audience:
Early childhood professionals
Licence:
Creative Commons Attribution 4.0
Cultural context:
Aboriginal perspectives from Yorta Yorta and Taungurung communities
Note:
Year
Theme:
Blood Transfusion, ABO Grouping
Document Type:
Procedure
Target Audience:
Medical Laboratory Staff
Note:
Year
Subject:
Specimen Processing and Handling
Document Type:
SOP (Standard Operating Procedure)
Organization / Institution:
St. John’s Rehab Campus (SJRH)
Target Audience:
Healthcare staff, phlebotomists, laboratory technicians
Year:
2025
Region / City:
Not specified
Subject:
Christian theology, interfaith dialogue
Document type:
Course syllabus
Institution:
HJ International Graduate School for Peace and Public Leadership
Author:
Dr. Robert S. Kittel
Target audience:
Graduate students, Christian clergy
Period of validity:
Spring Semester 2025
Approval date:
Not specified
Date of changes:
Not specified
Year:
2021
Region / city:
Manchester
Topic:
Property law, Lease disputes
Document type:
Judgment
Court / institution:
High Court of Justice, Business and Property Courts in Manchester
Author:
Judge Hodge QC
Target audience:
Legal professionals, Property lawyers, Academics
Period of validity:
2021
Approval date:
1 April 2021
Date of changes:
None
Year:
2015
Region / city:
Not specified
Topic:
Residual Current Devices (RCDs)
Document type:
Technical guide
Organization:
ABB
Author:
Not specified
Target audience:
Electrical engineers, professionals in photovoltaic systems
Effective period:
Not specified
Approval date:
Not specified
Amendment date:
Not specified
Year:
1964
Region / City:
Cotulla, Texas
Subject:
Civil Rights, Politics, History
Document Type:
Educational Activity
Author:
Not specified
Target Audience:
Students, Educators
Period of Effect:
1964 and onwards
Approval Date:
Not specified
Date of Changes:
Not specified