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Ultrasonic-Assisted Preparation of Biodiesel Products from Vegetable Oils04:40

Ultrasonic-Assisted Preparation of Biodiesel Products from Vegetable Oils

A safe ultrasonic-assisted transesterification method for vegetable oils using an alkaline catalyst is presented here. The method is rapid and efficient for preparing pure biodiesel products.
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Enhanced Oil Recovery using a Combination of Biosurfactants13:19

Enhanced Oil Recovery using a Combination of Biosurfactants

We illustrate the methods involved in screening and identification of the biosurfactant producing microbes. Methods for chromatographic characterization and chemical identification of the biosurfactants, determining the industrial applicability of the biosurfactant in enhancing residual oil recovery are also...
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Exploring the Two Herb Combination Strategy to Treat Injured PC12 Cells10:33

Exploring the Two Herb Combination Strategy to Treat Injured PC12 Cells

This protocol provides a combination strategy of two herbs to treat injured PC12 cells. The protocol provides a reference for optimizing the best application mode of traditional Chinese medicine...
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Nuclear Stability03:18

Nuclear Stability

Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
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RNA Stability01:53

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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A Gnotobiotic System for Studying Microbiome Assembly in the Phyllosphere and in Vegetable Fermentation07:51

A Gnotobiotic System for Studying Microbiome Assembly in the Phyllosphere and in Vegetable Fermentation

A method of growing germ-free Napa cabbages has been developed which enables researchers to evaluate how single microbial species or multispecies microbial communities interact on cabbage leaf surfaces. A sterile vegetable extract is also presented which can be used to measure shifts in community composition during vegetable...
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