The author synthesized a Green reagent N, N1-bis (4-dimethyl amino benzyl) ethylene diamine for the analysis of heavy metals namely Fe, Cd, Cr, Cu and Co by FAAS using Amberlite-XAD-16 in various environmental samples. The results shows good recovery compared with the results obtained with Cytosine. Effects of pH, reagent concentration, flowrate, volume of sample etc were studied.

The suitability of 5,10,15,20-tetrakis(4-carboxyphenyl)porphine as a complexing agent for the on-line preconcentration of cadmium using an anion exchanger (Amberlite IRA-904) in a microcolumn has been tested. Various parameters which affect complex formation and its sorption, as well as elution into the nebulizer of flame atomic absorption spectrometry (FAAS), were optimized. A 5 x 10(-4) mol 1...

A fast, simple, and reliable method for determination of hexavalent chromium species in soil aqueous and alkaline extracts has been developed. The procedure is based on the ion-pair extraction of Cr(VI) with methyltrioctylammonium chloride (Aliquat 336) into xylene. The extract is analyzed by flame (FAAS) or electrothermal atomic absorption spectrometry (ETAAS). The method allows the detection ...

Function-as-a-Service (FaaS) is a cloud service model enabling developers to offload event-driven executable snippets of code. The execution and management such functions becomes FaaS provider’s responsibility, therein included their on-demand provisioning automatic scaling. Key enablers for this are platforms, e.g., AWS Lambda, Microsoft Azure Functions, or OpenFaaS. At the same time, choice m...

Daniela Faas School of Applied Science and Engineering Harvard University Cambridge, MA USA Qifang Bao Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA USA Daniel D. Frey Department of Mechanical Engineering and Engineering Systems Division Massachusetts Institute of Technology Cambridge, MA USA Maria C. Yang Department of Mechanical Engineering and Engin...

This research aimed to quantify the speciation of chromium in different industrial effluent samples Hyderabad and Jamshoro, Pakistan. The hexavalent (Cr(VI)) was determined by microsample injection system flame atomic absorption spectroscopy (MIS-FAAS). total measured MIS-FAAS after oxidation trivalent (Cr(III)) Ce(SO4)2 an acidic medium (0.07 M H2SO4). content Cr(III) difference method (total ...

Serverless computing is a popular cloud paradigm that frees developers from server management. Function-as-a-Service (FaaS) the most implementation of serverless computing, representing applications as event-driven and stateless functions. However, existing studies report functions FaaS severely suffer cold-start latency. In this paper, we propose an approach namely FaaSLight to accelerating co...

In FaaS, users invoke remote functions, which encapsulate service(s). These functions typically need to remotely access a persistent state via external services: this makes the paradigm less attractive in edge systems, especially for IoT applications, due increased delay and outbound traffic. We propose generalize FaaS by allowing alternate between remote-state local-state phases, depending on ...

This study examined the effects of long-term frozen storage (-20 °C for 5 months) of free amino acids (FAAs) and nucleotide-related compounds (NRCs) in muscle and hepatopancreas of the coconut crab Birgus latro. Although long-term frozen storage had little effect on FAA composition in muscle, the amounts of several FAAs increased in the hepatopancreas that may be the result of protein decomposi...