Double Bladed Knife
Double Bladed Knife - Related Videos
11:37
Propeller Characterization: Variations in Pitch, Diameter, and Blade Number on Performance
0 Views •
2023
Source: Shreyas Narsipur, Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC A propeller is a twisted airfoil, where the angle of the chord changes with respect to the location, along the radial station, as shown in Figure 1. Propellers are widely used in aircraft and watercraft propulsion systems thereby necessitating detailed characterizations of propellers to design high performance vehicles. Figure 1. Chord, thickness, and pitch at a radial station. One of...
10:25
Specimen Preparation, Imaging, and Analysis Protocols for Knife-edge Scanning Microscopy
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Cited by 15 •
2011
The full process from brain specimen preparation to serial sectioning imaging using the Knife-Edge Scanning Microscope, to data visualization and analysis is described. This technique is currently used to acquire mouse brain data, but it is applicable to other organs, other species.
05:52
Clinical Efficacy of Small Needle Knife Therapy on Stage I-II Frozen Shoulder
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Cited by 5 •
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The protocol presented here describes the detailed operation method and proves the effectiveness of a small needle knife in the treatment of frozen shoulders.
06:56
Isolation of Double Negative αβ T Cells from the Kidney
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Cited by 26 •
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DNabT cells are rare among peripheral T cells; however, they are abundant in certain non-lymphoid tissues. Difficulty of isolating DN T cells from non-lymphoid tissue hinders their functional analysis despite increasing recognized pathophysiologic significance. We describe a novel protocol for isolation of highly purified DN T cells from murine kidney.
02:04
Fixing Double-strand Breaks
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2020
The double-stranded structure of DNA has two major advantages. First, it serves as a safe repository of genetic information where one strand serves as the back-up in case the other strand is damaged. Second, the double-helical structure can be wrapped around proteins called histones to form nucleosomes, which can then be tightly wound to form chromosomes. This way, DNA chains up to 2 inches long can be contained within microscopic structures in a cell. A double-stranded break not only damages...
FAQs
The two blades act at the same time, so their separation establishes the width of the strip produced between the incisions. Because both cuts occur during one movement, the resulting piece is shaped by a shared cutting pass rather than by two separately positioned cuts. This coordinated action supports consistent sampling when comparable tissue dimensions are important.
Blade spacing determines the distance between the paired incisions, while applied pressure affects how the knife passes through the specimen and therefore the resulting section. Keeping these factors controlled helps preserve the intended cut dimensions. If spacing or pressure changes, strips may differ in width or form, reducing comparability among samples prepared for structural examination.
Repeatability makes samples easier to compare because similar cuts reduce variation introduced during specimen preparation. In anatomical dissection or microscopic examination, more uniform material can help observations focus on biological structure rather than inconsistent section size. The instrument therefore contributes to controlled sampling and supports more reliable comparisons of structural and morphological features.
A basic workflow is to position the biological specimen, establish the intended blade spacing, and guide the knife through the material in a controlled pass. The paired blades then create the section or strip defined by that spacing. The resulting material can be collected or examined according to the study’s preparation needs, with pressure monitored because it influences the cut.
Researchers may choose this instrument when they need controlled removal, anatomical dissection, or uniform samples for microscopy. Its main value is procedural consistency: paired cuts can produce material with more comparable dimensions across preparations. That consistency is especially relevant when structural or morphological observations require researchers to distinguish genuine biological differences from variation caused by uneven sectioning.
In biology, the instrument connects specimen preparation with downstream structural analysis. A controlled strip or slice can provide material for microscopic examination, while anatomical dissection can use the paired cuts to remove or separate a defined region. By regulating cut dimensions, the method supports clearer comparisons of form and organization across biological specimens.