IR and Raman spectroscopy has been used to study the evolution of the vibrational spectrum of bundled single-walled carbon nanotubes (SWNTs) during the purification process needed to remove metal catalyst and amorphous carbon present in arc-derived SWNT soot. We have carried out a systematic study to define the different outcomes stemming from the purification protocol (e.g., DO, DO/HCl, DO/HNO...

The exploration of chemical space for new reactivity, reactions and molecules is limited by the need for separate work-up-separation steps searching for molecules rather than reactivity. Herein we present a system that can autonomously evaluate chemical reactivity within a network of 64 possible reaction combinations and aims for new reactivity, rather than a predefined set of targets. The robo...

Autologous conditioned serum (ACS) is a recent biotherapy based on certain cytokines anti-inflammatory properties mainly used for the reduction of osteoarthritis (OA) symptoms. Here we investigated different physico-chemical factors influencing ACS purification and cytokine production. Human venous blood was incubated in the presence of different diameter beads (respectively 2.5, 3, 3.5, and 4 ...

In an attempt to elucidate the relationships between some pyridine nucleotide-dependent dehydrogenases in Bacillus subtilis, such as alanine dehydrogenase, malate dehydrogenase, lactate dehydrogenase, and glutamate dehydrogenase, these enzymes are being purified and characterized with respect to their chemical, serological, and enzymic properties. In two previous papers (1, 2), the purification...

nanotechnology is the study of manipulating matter on an atomic and molecular scale. generally, nanotechnology deals with developing materials, devices, or other structures possessing at least one dimension size from 1 to 100 nanometers .  carbon nanotubes have great potentials for novel applications in industry, drug delivery system and many other uses. in this work after purification, multiwa...

Water samples from municipal water supplies in Kathmandu District were collected 10 different sampling spots between April to May, 2018. Analyses of various physico-chemical parameters conducted. Physical (pH, electrical conductivity, TDS) and Chemical Parameters like (total alkalinity, total Hardness, calcium, magnesium, chloride, iron, nitrate, ammonia) determined. This analysis was undertake...

Krebs Swiss has been engaged in developing unconventional and innovative processes that are inexpensive, yet achieve highest levels of salt purity. This article examines the nature of impurities in salt and explains the unit operations employed in the Krebs Swiss SALEX salt purification process. It describes the prediction methods of the process performance and presents results obtained in indu...

In an attempt to elucidate the relationships between some pyridine nucleotide-dependent dehydrogenases in Bacillus subtilis, such as alanine dehydrogenase, malate dehydrogenase, lactate dehydrogenase, and glutamate dehydrogenase, these enzymes are being purified and characterized with respect to their chemical, serological, and enzymic properties. In two previous papers (1, 2), the purification...

Modern total protein synthesis has evolved from the ‘chemical ligation’ methods introduced by the Kent laboratory [Kent SBH. Total chemical synthesis of proteins. Chemical Society Reviews 2009; 38: 338-51.]. Unprotected synthetic peptide segments, spanning the amino acid sequence of the mature polypeptide chain derived from a predicted open reading frame, are covalently joined to one another by...