16 Questions 260 Answers 0 Followers
Questions related from Yoram Gerchman
Greetings all As you might know raw milk has an alkaline phosphatase activity, and indeed this activity is used for pasteurization quality control. The question I am wondering about is, what is...
06 June 2019 4,540 1 View
Greetings I am looking for a trusted protocol for extraction of Heme A, Heme B and Heme O, to be used as standards in HPLC analysis. Alternatively if you know of a commercial source also...
05 May 2019 5,556 2 View
Greetings Does anyone have , and is willing to sent me, a plasmid suitable for constitutive expression of gfp in Bacillus subtilis? Many thanks Yoram
04 April 2019 1,581 1 View
Greetings I am looking for an optical setup that will enable me to illuminate a single sample with two different wavelength in the UV range simultaneously. I though about placing 2 monochromators...
11 November 2018 1,634 0 View
Greetings all As wastewater get biologically treated carbon is removed, but obviously not all carbon species are removed, since some are more easily consumed by the bacteria doing the treatment....
11 November 2018 6,341 2 View
Greetings I am trying to find out what is the origin of the 220nm absorbance peak of free amino acids? It is usually attributed to peptide bond but I find it also in single aa... Yoram
06 June 2018 6,746 3 View
Greeting. I have noticed a pattern and wonder what is the reason. When ever I have suspension of particles in water droplet, be it bacteria or abiotic they seem to concentrate in the edge of the...
05 May 2018 10,131 1 View
Greetings We need to buy an RI detector for our Agilent 1200 HPLC system (connected to a computer running ChemStation). Given the high price of new detector I thought about buying a used one....
10 October 2017 7,251 10 View
Greetings all. We are looking into following the kinetics of short dsRNA melting and about using a dye that will bind differently to dsRNA and ssRNA. Any idea for such a dye? Or to another simple...
07 July 2017 6,775 1 View
Greetings I am trying to quantify UV irradiation form different UV lamps buy using UV sensor. The problem is the response curve of the sensor is different for different wavelength (as it is often...
06 June 2017 7,450 4 View
Greetings Does anyone have a simple protocol for coating polymer sheets with TiO2 to obtain effective photocatalytic sheets? Transparency is NOT and issue but flexibility will be. A collaboration...
01 January 2017 2,501 2 View
Greetings This is a rather silly question, but I got to re-think about peptide bond formation. Many biochemistry textbook(s) say to make a peptide bond you connect AA1 carboxyl side as COOH with...
11 November 2016 8,567 3 View
Greetings. I am looking for Q-Dots or other high yield fluorophore that exite at ~254nm and emit at ~300nm. Any ideas welcome Yoram
03 March 2016 5,110 2 View
Greetings all. We have purified a novel enzyme with interesting properties and wish to determine it's (protein) sequence. Since there is no genome data available, neither data on closely related...
11 November 2014 4,669 7 View
Greetings We are trying to determine what sugars are present in squirting cucumber (Ecballium elaterium) 'fruit'. We have access to an HPLC-DAD (unfortunately no RI detector) and to GC/MS. We can...
07 July 2013 1,000 8 View
A great project indeed! 1. I assume the solar panel is meant to expose the water (and bacteria in it) to solar radiation and heat? What are the transparent tubes made from? 2. SODIS call for...
01 January 1970 8,736 4 View
