Industrial

This document describes the features and characteristics of a VCC supervisory circuit with serial E2PROM memory. It includes low Vcc detection and reset assertion, Block LockTM protection, in-circuit programmable ROM mode, low power consumption, multiple power supply operation ranges, fast programming time, SPI modes, and write protection.

X24C16 is a CMOS 16,384 bit serial E2PROM from Xicor, introduced in 1991. It is internally organized 2048 x 8, features a serial interface and software protocol, and operates on a simple two wire bus. It is fabricated with Xicor's advanced CMOS Textured Poly Floating Gate Technology and uses Xicor's proprietary Direct WriteTM cell, providing a minimum endurance of 100,000 cycles and a minimum data retention of 100 years.

Analysis of amino acids in beer using HPLC with online derivatization.

This article introduces a method for analyzing unsaturated triglycerides using HPLC. The method can use UV-visible diode-array detection (UV-DAD) to analyze triglycerides, hydroperoxides, sterols and vitamins. Spectra were evaluated to trace hydroperoxides and to differentiate saturated from unsaturated triglycerides. Unsaturated triglycerides in olive oil have a very distinctive pattern. Other fats and oils are also complex mixtures of triglycerides but exhibit an entirely different pattern. Adulteration with foreign fats and the use of refined triglycerides in olive oil can also be detected through triglyceride analysis.

The HPLC method for direct analysis of glyphosate in water with postcolumn derivatization was presented.

A method for the determination of aspartame by high-performance liquid chromatography is described. The method involves low-pH liquid extraction and OPA/MPA derivatization, and exhibits good sensitivity and selectivity.

This document introduces a method for analyzing all eight naturally occurring tocopherols (T) and tocotrienols (T3) in margarine using normal-phase chromatography. This method uses fluorescence detection to avoid detecting peaks that overlap with coeluting peaks.

This paper introduces a method for detecting vitamins using high performance liquid chromatography (HPLC). This method can simultaneously detect fat-soluble vitamins and water-soluble vitamins. The method has high sensitivity, selectivity, and can simultaneously detect multiple vitamins.

The article introduces the HPLC method for analyzing carbohydrates in lemonade.

This article describes the analysis of triglycerides in olive oil and rap oil using HPLC. Unsaturated triglycerides in olive oil have very characteristic patterns. Other fats and oils are also complex mixtures of triglycerides but with different patterns.

The document introduces the HPLC method for analysis of aflatoxins in pistachio nuts.

This document describes the analysis method of bitter compounds in orange juice and lists several common bitter compounds. High-performance liquid chromatography (HPLC) is used for analysis, which is suitable for low volatile or thermally unstable compounds. Sample preparation involves protein precipitation using potassium ferrocyanide and zinc sulfate. The results show the presence of bitter compounds such as hesperidin and naringenin in orange juice.

This document describes a method for using HPLC to analyze the quality of vanillin extract. The method uses a gradient elution method using water and acetonitrile as the mobile phases. The method is able to separate a variety of compounds in vanillin extract, including vanillin alcohol, 4-hydroxybenzoic acid, vanillin, ethyl vanillin, and coumarin.