Conical Tube Assembly
Conical Tube Assembly - Related Videos
01:29
Polar Equations of Conics
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2025
A conic section can be defined in polar coordinates as the set of all points whose distance from a fixed point, known as the focus, bears a constant ratio to their distance from a fixed line, known as the directrix. This constant ratio is called the eccentricity. This definition unifies all types of conic sections—ellipses, parabolas, and hyperbolas—under a single framework. When the focus is positioned at the origin of the polar coordinate system, a single polar equation can describe any conic...
11:36
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
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Cited by 21 •
2009
The analytical ultracentrifuge (AUC) sample cell holds sample and reference buffer and during experiments and is exposed to high vacuum and rotor speeds up to 60,000 rpm. This video will demonstrate the rigorous attention to detail necessary for assembly, loading and alignment of this very important component of an AUC experiment.
10:56
Tube Thoracostomy
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Source: Rachel Liu, BAO, MBBCh, Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA Tube thoracostomy (chest tube placement) is a procedure during which a hollow tube is inserted into the thoracic cavity for drainage of fluid or air. Emergency chest tube insertion is performed for definitive treatment of tension pneumothorax, traumatic hemothorax, large-volume pleural effusions, and empyemas. Irrespective of the cause of air and fluid accumulation in the pleural space, the...
12:10
Single Particle Electron Microscopy Reconstruction of the Exosome Complex Using the Random Conical Tilt Method
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Cited by 35 •
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This article describes a standard method to get a three-dimensional (3D) reconstruction of biological macromolecules using negative staining electron microscopy (EM). In this protocol, we explain how to get the 3D structure of the Saccharomyces cerevisiae exosome complex at medium resolution using the random conical tilt reconstruction method (RCT).
01:16
Uterine Tubes
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2024
The uterine or fallopian tubes function as the conduit through which oocytes travel from the ovaries to the uterus. Each fallopian tube measures approximately 10 to 13 cm long and is anatomically divided into the infundibulum, ampulla, isthmus, and interstitial part (or intramural segment). The infundibulum is characterized by its funnel shape and features extensions called fimbriae which reach towards the peritoneal cavity. These fimbriae play a critical role during ovulation as they extend...
FAQs
The tapered interior guides cells, embryos, tissue fragments, and other particles toward the tube tip rather than leaving them distributed across a broad flat surface. This concentration can support more consistent collection and washing steps. In developmental biology, the geometry is therefore relevant when recovering small or unevenly distributed biological material for microscopy, molecular analysis, or later experiments.
Properly aligning the closure and securing any required accessories helps maintain containment while the vessel is handled, mixed, or centrifuged. A poorly assembled tube can increase the risk of material loss or contamination. Consistent assembly provides a more reliable barrier around developmental biology samples and supports reproducible preparation before downstream analysis.
Two practical factors are consistent joining of the tube and closure and correct positioning of any required accessories. Together, they help preserve containment and reduce opportunities for sample escape or contamination. The tapered tube geometry also supports recovery by directing biological material toward the tip, making assembly quality relevant to both handling efficiency and experimental reliability.
Preparation begins by combining the conical tube with its closure and any required accessories. The components should be properly aligned and joined to create a secure vessel before samples or reagents are handled. Consistency at this stage helps maintain containment during subsequent collection, washing, mixing, or centrifugation and reduces avoidable material loss.
Developmental biologists can use these assemblies during the collection, washing, and temporary processing of embryos, cells, tissue fragments, and reagents. The format is useful when samples must remain contained during routine handling or centrifugation. It supports preparation workflows that lead to microscopy, molecular analysis, or other downstream developmental biology experiments.
Consistent assembly can improve sample recovery while reducing contamination and loss of biological material. Those improvements contribute to more reliable preparation for microscopy and molecular analysis, where incomplete recovery or contamination may compromise interpretation. In developmental biology, maintaining a dependable sample-handling vessel helps connect early processing steps with more consistent downstream experimental results.