منابع مشابه
Tetrazolium violet – a new spectrophotometric reagent for molybdenum determination
* corresponding author. e-mail: [email protected] The interaction of Mo(VI) and tetrazolium violet (TV) has been examined. The ion-associate formed is extracted into 1,2-dichloroethane. The tetrazolium violet : molybdenum(VI) : 3,4,5-trihydroxybenzoic acid ratio (R) is 2 : 1 : 2. The optimum conditions have been established. Beer’s law is obeyed in the range of 0.2–5 μg ml–1 molybdenum(VI...
متن کاملPost-Katrina Fecal Contamination in Violet Marsh near New Orleans
Fecal material entrained in New Orleans flood waters was pumped into the local environment. Violet Marsh received water pumped from St. Bernard Parish and the Lower Ninth Ward. Sediment core samples were collected from canals conducting water from these areas to pump stations and from locations within Violet Marsh. Viable indicator bacteria and fecal sterols were used to assess the levels of fe...
متن کاملNew Legionella Control Options by UV and Violet LEDs for Hospitals and Care Facilities
Legionella infections caused by contaminated water are a widespread problem worldwide. Discharge lamps like mercury vapor lamps are widely known for the disinfection properties of their radiation, but they suffer technical disadvantages, like high voltages and toxic content, and are, therefore, not suitable for some infection control applications. New high-intensity ultraviolet (UV) an...
متن کاملAnalysis of violet-excited fluorochromes by flow cytometry using a violet laser diode.
BACKGROUND Low power violet laser diodes (VLDs) have been evaluated as potential replacements for water-cooled argon-ion and krypton-ion ultraviolet and violet lasers for DNA content analysis using the Hoechst dyes and 4,6-diamidino-2-phenylindole (Shapiro HMN, Perlmutter NG: Cytometry 44:133-136, 2001). In this study, we used a VLD to excite a variety of violet-excited fluorescent molecules im...
متن کاملPreparation and luminescence of a new violet blue phosphor derived from proton-type zirconium phosphate
A violet blue phosphor was prepared by thermal treatment of HZr2(PO4)3 at 700 C in a reducing atmosphere and its PL was investigated. The phosphor shows violet blue emissions at around 392 nm when excited by 254 nm UV light. Its absorptivity, internal and external quantum efficiency are found to be 43, 41, and 18%, respectively, at room temperature when excited at 254 nm. Analyses using non-dis...
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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1900
ISSN: 0006-8071
DOI: 10.1086/327957