Molasses Tray
Molasses Tray - Related Videos
11:20
The Effect of Reflux Ratio on Tray Distillation Efficiency
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Tray and packed columns are both commonly used for distillation, absorption, and stripping separation operations.1,2 The goal of this experiment is to distill a mixture of alcohols (methanol, isopropanol) and water in a sieve tray column and examine how closely simple theories of distillation based on equilibrium assumptions are followed. Sieve trays provide maximum...
07:41
Using a Tray Dryer to Investigate Convective and Conductive Heat Transfer
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2023
Source: Michael G. Benton and Kerry M. Dooley, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Dryers are utilized in numerous industrial processes. The function of a dryer is to use heat transfer processes to dry solids. A variety of dryer types exist. Adiabatic dryers use convection and direct contact with gases to dry solids, whereas non-adiabatic dryers use methods other than heated gas contact to dry1, including conduction, radiation, and radio frequency...
08:03
Maintenance of a Drosophila melanogaster Population Cage
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Cited by 8 •
2016
This manuscript reports a detailed protocol for culturing, on a regular basis, a population of Drosophila melanogaster using a fly population cage.
05:48
A Behavioral Assay for Mechanosensation of MARCM-based Clones in Drosophila melanogaster
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Cited by 1 •
2015
In order to identify novel mutations affecting mechanosensation, we designed an assay that measures the behavioral response to tactile stimulation of fly bristles in mutant clones generated by the MARCM method. The combination of techniques allows for the identification of mechanosensitive mutations that would otherwise be lethal.
10:55
Primary Cell Cultures from Drosophila Gastrula Embryos
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Cited by 10 •
2011
We provide a detailed protocol for preparing primary cells dissociated from Drosophila embryos. The ability to carry out the effective RNAi perturbation, together with other molecular, biochemical and cell imaging methods will allow a variety of questions to be addressed in Drosophila primary cells.
FAQs
Moisture helps maintain a suitable surface for adult fruit flies, while the nutrient-containing molasses medium encourages feeding and egg deposition. These conditions make the tray more effective than a dry collection surface for gathering embryos. In Drosophila experiments, the resulting eggs can be transferred for controlled developmental studies and other downstream analyses.
A broad surface accommodates egg deposition from many adult flies at the same time, increasing the efficiency of collection. It also helps researchers obtain a larger group of embryos under comparable conditions. This is useful when experiments require synchronized samples for developmental comparisons, genetic work, imaging, or treatments.
Standardized collection helps produce embryos that begin the experiment within a more comparable developmental window. Researchers can then organize samples for staged development and evaluate differences with less variation caused by collection timing. This improves reproducibility, especially in studies that examine embryology, development, genetics, or responses to experimental treatments.
The workflow begins by providing adult flies with the moist, nutrient-containing collection surface. Researchers then gather the deposited eggs from the tray and transfer the embryos into conditions suited to the planned experiment. Depending on the study, the collected material may be organized for developmental staging, genetic crosses, imaging, or treatment.
Collected embryos can support several experimental workflows. Researchers may follow staged development, use them in genetic crosses, image developmental changes, or expose them to experimental treatments. Because the eggs originate from a standardized collection process, the samples are better suited for comparisons across groups and for repeated biological experiments.
The tray provides a consistent way to obtain fruit fly eggs, creating a common starting point for diverse investigations. In genetics, embryos can enter crossing experiments; in developmental biology, they can be staged or imaged; and in behavior-related research, standardized early-life samples can support broader experimental designs. Consistent collection strengthens reproducibility across these applications.