Characterization of Photochemical Reaction in Photosensitive Printing Plates.

3D-Printing Plates without “Support”

When printing a plate (or dish) by an FDM 3D printer, the process normally requires support material, which causes several problems. This paper proposes a method for forming thin plates without using wasteful support material. This method requires several extraordinary parameter values when slicing plates. The experiments show that the plates can, for the most part, be successfully formed using...

Photochemical behavior and photobiological action of photosensitive drug Tolbutamide

Irradiation of sulfonamide derived oral antidiabetic drug, tolbutamide (N-[(butylamino) carbonyl]-4methylbenzenesulfonamide,1) in a phosphate buffered solution under aerobic atmosphere afforded two photoproducts by cleavage of S-N and C (O)-N bonds of urea units. When irradiated with linoleic acid it photoinduced lipid peroxidation. The insignificant decrease in lipid peroxidation test under ar...

The Photochemical Reaction in Photosynthesis

Measurements of photosynthesis were made in continuous and flashing light of high intensity, using cells varying in chlorophyll content. The amount of chlorophyll present per molecule of carbon dioxide reduced per single flash of light was found to be about 2480 molecules. The length of time required for one unit in the photosynthetic mechanism to complete the cycle of photochemical and Blackma...

Blue Printing Directly from Agar Plates.

Photochemical Reaction of Nalidixic Acid in Methanol

The photochemical reactions of methanolic nalidixic acid (NAL) solution in the absence and in the presence of air have been investigated using 300 nm UV light. From the reactions, 1-ethyl-7-methyl-4-oxo-4-hydro-1,8naphthyridine (EMDN), formic acid, and formaldehyde are produced. In the presence of air, hydrogen peroxide is also detected along with the products listed above. The presence of oxyg...