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This document describes an educational procedure for conducting an osmosis experiment, focused on observing diffusion across a selectively permeable membrane in a laboratory setting.
Note:
Year
Topic:
Cell biology, osmosis
Document type:
Educational lab procedure
Target audience:
Students, educators
Price: 8 / 10 USD
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The product description is provided for reference. Actual content and formatting may differ slightly.
Year:
2018
Region / City:
Syracuse, NY
Subject:
Reverse Osmosis Water Purification System for Veterans Affairs
Document Type:
Solicitation
Agency:
Department of Veterans Affairs
Target Audience:
Small Business Suppliers
Period of Validity:
30 days after award
Approval Date:
06-12-2018
Modification Date:
N/A
Type of document:
Laboratory handout
Subject:
Cell biology
Educational level:
Introductory college biology
Learning objectives:
Use of light microscope; identification of cell structures; examination of eukaryotic multicellular cells; demonstration of osmosis in plant cells; interpretation of the animated short film The Inner Life of the Cell
Topics:
Prokaryotic and eukaryotic cells; microscopy; staining techniques; multicellularity; osmosis
Activities:
Microscope practice with prepared slides; simple staining of human cheek cells; sketching and labeling of observed specimens
Organisms mentioned:
Bacteria; Archaea; Protists; Fungi; Plants; Animals; Humans
Materials:
Compound light microscope; prepared slides; toluidine blue stain; toothpicks; coverslips
Assessment requirements:
Labeled biological sketches with total magnification indicated
Year:
N/A
Region / City:
N/A
Topic:
Osmosis, Plant Biology
Document Type:
Scientific Experiment
Author:
N/A
Target Audience:
N/A
Period of Action:
N/A
Approval Date:
N/A
Date of Changes:
N/A
Note:
Year
Subject:
Biology
Document type:
Examination paper
Target audience:
Students
Duration:
1 hour
Experiment details:
Investigating osmosis in potato tissue
Year:
1970s
Region / City:
Middletown, DE, USA
Subject:
Plant physiology, diffusion, osmosis
Document Type:
Laboratory report
Institution:
Appoquinimink High School
Author:
Not specified
Target Audience:
High school biology students
Experiment Date:
Not specified
Materials:
Russet potatoes, dialysis tubing, sucrose solutions, glucose Testape®, IKI solution, beakers, peeler, knife, cork borer, metric ruler, balance
Methods:
Observation of mass changes in potato tissue to determine sucrose concentration and water potential
Results:
Percent change in mass, ranking of sucrose solutions, water potential calculated as -7.70 bars, isotonic point approximately 0.305 M
Key Concepts:
Diffusion, osmosis, water potential, isotonic point, solute concentration
Year:
Not specified
Region / City:
Not specified
Subject:
Biology, Cell Biology
Document Type:
Lecture Outline
Institution:
Not specified
Author:
Not specified
Target Audience:
Students of Biology
Period of Effectiveness:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
2015
Region / City:
United States
Subject:
Antimicrobial Susceptibility Testing
Document Type:
Template
Organization:
Regional Medical Center
Author:
N/A
Target Audience:
Laboratory personnel involved in AST testing
Effective Period:
N/A
Approval Date:
N/A
Modification Date:
N/A
Year:
2026
Region / Institution:
Multicenter / International Working Group
Subject:
Spinal Cord Injury, Diffusion Tensor Imaging
Document Type:
Imaging Protocol
Target Audience:
Radiologists, MRI Technicians, Neurologists
MRI Field Strength:
1.5 T or 3 T
Acquisition Plane:
Axial
Sequence Type:
Reduced FOV EPI SE DTI
Parameters Included:
TR, TE, FA, FOV, Matrix size, Slices, Voxel size, Phase encoding, Fat suppression, Bandwidth, 2DRF tilt, Echo train length, b-values
Year:
2026
Region / city:
Cambridge, UK
Document type:
Research study
Organization / institution:
University of Cambridge
Author:
Thais Minett, Li Su, Elijah Mak, Guy Williams, Michael Firbank, Rachael A. Lawson, Alison J. Yarnall, Gordon W. Duncan, Adrian M. Owen, Tien K. Khoo, David J. Brooks, James B. Rowe, Roger A. Barker, David Burn, John T. O’Brien
Target audience:
Researchers, medical professionals, clinicians
Study period:
18 months
Date of approval:
Not provided
Date of changes:
Not provided
Funding sources:
Parkinson’s UK, Lockhart Parkinson’s Disease Research Fund, NIHR, Wellcome Trust, Alzheimer’s Research UK
Supplemental Data:
SupplData 1, Table e-1
Context:
Longitudinal study examining white matter changes in Parkinson’s disease patients using diffusion tensor imaging to predict cognitive and motor decline.
Subject:
Semiconductor physics
Topic:
Excess carrier transport
Type of document:
Scientific theoretical exposition
Physical context:
n-type semiconductor under uniform electric field
Main equation:
Carrier diffusion equation with drift and recombination terms
Key variables:
Δp(x,t), D, μ, E, G, τ, σ
Phenomena analyzed:
Diffusion, recombination, drift, carrier generation
Mathematical methods:
Partial differential equations, Gaussian approximation, exponential solution
Related experiment:
Haynes–Shockley experiment
Field of study:
Solid-state electronics
Field:
Neuroimaging
Topic:
Diffusion tensor imaging metrics and white matter lesions in cerebral small vessel disease
Document type:
Literature review
Data sources:
MEDLINE; EMBASE
Imaging methods:
Diffusion Tensor Imaging (DTI); Magnetic Resonance Imaging (MRI)
Key metrics:
Fractional anisotropy (FA); Mean diffusivity (MD)
Medical conditions discussed:
Cerebral small vessel disease; stroke; Alzheimer’s disease; Parkinson’s disease; aging-related white matter changes
Anatomical focus:
White matter; white matter lesions; normal appearing white matter
Research objective:
Examination of how DTI-derived microstructural measures relate to white matter lesions of presumed vascular origin
Analytical approach:
Targeted database review, synthesis of findings, and critical appraisal of reported associations
Main variables:
WML burden; FA values; MD values; lesion location; disease context
Year:
Not specified
Region / City:
Not specified
Subject:
Biology, Cell Biology
Document Type:
Lecture Outline
Institution:
Not specified
Author:
Not specified
Target Audience:
Students of Biology
Period of Effectiveness:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
The Can Challenge: Understanding the Best Ways to Incentivise Recycling through a Diffusion Approach
Year:
2024
Region / City:
United Kingdom
Subject:
Recycling behaviour and monetary incentives
Document Type:
Research article
Institution:
University of East Anglia, Norwich City Council, Norfolk County Council
Authors:
Michael Brock, Lucia M. Murgia, Stefania Sitzia, Jiwei Zheng
Target Audience:
Environmental policy makers, researchers in behavioural economics and sustainability
Methodology:
Field experiment
Locations:
Student accommodation, residential housing, workplace offices
Duration:
20 weeks (10-week monitoring phase, 10-week incentive phase)
Key Focus:
Drinks can recycling, aluminium recycling rates
Model Used:
Bass Diffusion Model
Policy Relevance:
Circular economy, waste management strategies
Year:
2018
Region / City:
London Borough of Lewisham
Document Type:
Air Quality Monitoring Report
Prepared by:
AECOM Limited
Author:
James Berman
Reviewed by:
Zadie Astill
Approved by:
Gareth Collins
Project Number:
60194269
Date of Approval:
May 2019
Revision History:
Draft 29/03/2019, Final 30/05/2019
Monitoring Locations:
50 diffusion tube sites
Sampling Period:
January 2018 – December 2018
Analyzed by:
Gradko International Ltd
Target Pollutant:
Nitrogen Dioxide (NO2)
Methodology:
TEA in acetone diffusion tube method
Compliance Standards:
UK and EU NO2 objectives
Year:
2019
Region / city:
OECD
Topic:
Adverse Outcome Pathway, oxidative stress, brain development, neurotoxicity
Document Type:
External Review Report
Author:
OECD EAGMST review manager
Target Audience:
Scientific community, regulators, policymakers
Period of validity:
Not specified
Approval Date:
June 2018
Date of revisions:
17 March 2020
Year:
2023
Region / City:
Kenya
Theme:
Agriculture, Social Development
Document Type:
Framework
Organization:
Ministry of Agriculture and Livestock Development, State Department for Crop Development
Author:
Not specified
Target Audience:
Vulnerable and marginalized groups, governmental bodies, NGOs, and stakeholders involved in social development projects
Period of Effectiveness:
September 2023 and ongoing
Approval Date:
September 2023
Date of Changes:
Not specified
Year:
1980
Region / City:
New Zealand
Subject:
Physiotherapy, Research, Health
Document Type:
Guidelines
Organization / Institution:
Physiotherapy New Zealand
Author:
Physiotherapy New Zealand
Target Audience:
Physiotherapy professionals, Researchers
Period of Validity:
Not specified
Approval Date:
Not specified
Modification Date:
2010
Year:
2021
Region:
New South Wales
Document Type:
Policy guidance / template
Applicable Policies:
Aboriginal Procurement Policy, SME and Regional Procurement Policy
Target Audience:
Suppliers bidding for contracts above $3 million
Contract Thresholds:
Goods and services contracts $3–7.5 million, over $7.5 million, construction contracts over $7.5 million
Reporting Requirements:
Quarterly reporting on plan progress
Agency:
Relevant NSW government contracting agencies
Year:
2024
Region / City:
South Carolina
Topic:
Request for Proposal / Government Procurement
Document Type:
Solicitation
Organ / Institution:
South Carolina Department of Mental Health, South Carolina Department of Veterans’ Affairs
Author:
State Fiscal Accountability Authority
Target Audience:
Potential Offerors (Bidders)
Period of Action:
3/1/2025 – 2/28/2030
Approval Date:
12/6/2024
Amendment Date:
N/A
Reference number:
RFB 3024/2024
Document type:
Bid specification annexure
Procuring entity:
South African Police Service (SAPS)
Implementing agency:
State Information Technology Agency (SITA)
Country:
South Africa
Year:
2024
Subject matter:
Procurement of F5 load balancers and related services
Products covered:
F5 VELOS hardware, software, licenses and add-ons
Services included:
Maintenance, support and professional services
Service period:
Five years (60 months)
Scope of work:
Supply, design, installation, configuration and support of load balancing and application security solutions
Delivery locations:
SITA Centurion, SITA Beta, Pretoria
Evaluation framework:
Mandatory administrative, technical and contractual evaluation stages
Related annexes:
Annex A (Bidder substantiating evidence), Annex B (Addendum 1)