N-acetyl Cysteine Coated Gallium Particles Demonstrate High Potency against Pseudomonas aeruginosa PAO1 SUMMARY: Antibiotic resistant bacterial infections are on the rise, especially in hospitals. One of the culprits is the bacteria Pseudomonas aeruginosa (POA1). Researchers are quickly running out of antibiotics to use against resistant strains. The problem has reached the point where colistin, a… Continue reading Using NAC Against Antibiotic Resistance Bacteria
Category: CR 3: Evidence of Reactions (HS)
Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs
Beaming Purines
The Formation of Nucleobases from the Ultraviolet Photoirradiation of Purine in Simple Astrophysical Ice Analogues SUMMARY: Purines were combined with water and ammonia and beamed with UV photons similar to the pyrimidines in “Beaming Pyrimidines Part 1”. Researchers found many purine compounds in the products including adenine and guanine (at different concentration levels). The discussion… Continue reading Beaming Purines
Beaming Pyrimidines Part 3
Irradiation of Pyrimidine in Pure H2O Ice with High-Energy Ultraviolet Photons SUMMARY: In Part 3 of pyrimidine beaming, researchers looked at different energy levels of photons and their effect on pyrimidines. They beamed a water and pyrimidine ice mixture with photons of three different wavelengths. Uracil and the molecule that is the precursor to uracil… Continue reading Beaming Pyrimidines Part 3
Beaming Pyrimidines Part 2
Thymine and Other Prebiotic Molecules Produced from the Ultraviolet Photo-Irradiation of Pyrimidine in Simple Astrophysical Ice Analogs(NOT OPEN ACCESS) SUMMARY: In the second edition of beaming pyrimidines, instead of using ammonia, scientists beamed pyrimidines with methanol, water and methanol, methane, and water and methane. As with “Beaming Pyrimidines Part 1”, the gases were cooled way… Continue reading Beaming Pyrimidines Part 2
Beaming Simulated Space Ice
Enantiomeric separation of complex organic molecules produced from irradiation of interstellar/circumstellar ice analogs(NOT OPEN ACCESS) SUMMARY: To simulate conditions in space and in asteroids and meteorites, scientists put simple gases (water, carbon dioxide, ammonia, and methanol) into a low temperature and low pressure chamber. Then, using UV light, they irradiated these gases (which at the… Continue reading Beaming Simulated Space Ice