Vacuum Sectioning
Vacuum Sectioning - Related Videos
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Proper Operation of Vacuum Based Equipment
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Source: Robert M. Rioux, Ajay Sathe & Zhifeng Chen, Pennsylvania State University, University Park, PA Vacuum is required for a number of laboratory procedures. This is most routinely achieved in the laboratory by the use of vacuum pumps. In addition to working at low pressures, vacuum pumps can also be used to enable rapid changing of the atmospheres in a reactor or flask by evacuation and backfilling.
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Cross-Sectional Research
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In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
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Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation
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A protocol for seedless and high yield growth of bismuth nanowire arrays through vacuum thermal evaporation technique is presented.
03:03
Inoculating a Bacterial Pathogen into Arabidopsis Leaves via Vacuum Infiltration
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Source: Rufián, J. S., et.al. Single-Cell Analysis of the Expression of Pseudomonas syringae Genes within the Plant Tissue. J. Vis. Exp. (2022)This video demonstrates a vacuum infiltration method to introduce a bacterial pathogen into Arabidopsis plant leaves. The approach uses a prepared bacterial suspension and vacuum pulses to enable uniform entry through stomata, resulting in controlled leaf infection.
09:26
How to Build a Vacuum Spring-transport Package for Spinning Rotor Gauges
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Cited by 1 •
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Here we describe how to build a robust spring-transport mechanism for a spinning rotor gauge. This device securely immobilizes the rotor and keeps it under vacuum during transportation. We also describe packaging that minimizes the risk of damage during transport. Tests show our design works for typical shocks during transport.
FAQs
Reduced pressure removes air from around the specimen and the sectioning system. This can improve contact among the sample, its support medium, and the cutting surface, helping the specimen remain positioned during slicing. Better contact and reduced movement may produce more regular section surfaces, which is particularly useful when delicate material is disrupted by conventional cutting.
Consistent contact helps the cutting surface interact with the specimen in a more controlled way. When air or movement interferes, sections may become irregular or the sample may sustain damage. Vacuum sectioning addresses these problems by limiting air around the cutting setup, supporting preparation of surfaces that are more suitable for later microscopic examination.
The technique is most relevant when conventional cutting produces irregular sections or damages delicate specimens. Its reduced-pressure environment can limit disruption during slicing and improve the relationship between the specimen and cutting system. This makes it a useful alternative for biological samples whose organization or material interfaces need to remain sufficiently intact for microscopy.
A basic workflow places the biological specimen within the sectioning system, establishes reduced pressure around the specimen and cutting components, and then produces thin sections through slicing. The resulting sections can be prepared for subsequent staining or imaging. The key procedural purpose of the vacuum step is to remove surrounding air and reduce movement during cutting.
Sections produced through this approach can support microscopic examination of tissue organization and cellular features. They may also reveal characteristics of interfaces between biological materials when those surfaces are preserved during preparation. After sectioning, staining and imaging allow researchers to compare visible structures across specimens or experimental conditions within a histology or microscopy workflow.
Researchers apply the method within histology and microscopy workflows when thin, well-prepared specimen surfaces are needed for observation. It can support analysis of tissue organization, cellular features, and material interfaces, while the sections may undergo staining, imaging, or comparative evaluation. Its value is greatest when preserving specimen condition during cutting affects the quality of interpretation.