Search Results

You are looking at 21 - 30 of 1,677 items for :

  • "literature" x
  • Chemistry and Chemical Engineering x
  • All content x
Clear All

In this Section of the journal, the literature on continuous flow synthesis (primarily organic synthesis and functional materials) from the period of October — December 2016 is presented. All the publications are listed ordered by journal name, with two Review articles appearing at the end. In this quarter the number of papers on continuous flow organic synthesis is relatively less as a few special issues are planned in the coming months. Two contributions on machine learning for optimization in flow synthesis and the scale-up of continuous flow reactors from Eli Lilly are the real highlights of this quarter!

Restricted access

In this section of the journal, the literature on continuous-flow synthesis (primarily organic synthesis and functional materials) from the period of January–March 2015 is presented. All the publications are listed and ordered by journal name, with review articles grouped at the end. This time, there is no section on highlighted articles; however, from the next issue, a succinct overview of specific publications will be included in this section. From the next issue, some publications having engineering principles relevant to flow synthesis will also be included in this list with specific highlights that will give new insights on flow synthesis.

Restricted access

In this section of the journal, the literature on continuous-flow synthesis (primarily organic synthesis and functional materials) from the period of July to September 2015 is presented. All the publications are listed and ordered by journal name, with a few review articles appearing at the end. With a few special issues related to flow synthesis and advances in organic process development, the number of publications on flow synthesis has grown steadily in this period. This also shows the growing interest of the community in adapting to flow synthesis.

Restricted access

Abstract  

The applicability of the INIS database for literature retrieval on nuclear-related analytical techniques [e.g. neutron activation analysis (NAA), X-ray fluorescence (XRF), particle-induced X-ray emission (PIXE)] has been studied. There exist about 9700 documents on NAA and other forms of activation analysis, about 3500 documents on XRF and about 1200 documents on PIXE in the database collected from 1976 until July 1988. They cover a variety of elements and matrices in the fields of biology, geochemistry and the physical sciences. Some technical notes and comments on the practical use of this database are also included.

Restricted access

In this section of the journal, the continuous-flow chemistry literature of the preceding months is presented. Included are articles published in the period July–December 2014. Some key examples are highlighted in the form of graphical abstracts. The remaining publications in the field are then listed ordered by journal name, with review articles grouped at the end. This will be the final part in this series.

Restricted access

Abstract  

A comparative review of mineral-specific radionuclide sorption databases created for performance assessment and reported in both the open literature and grey literature (e.g. technical reports) has in part shown poor quality of documentation describing the database selection procedures. Inadeguate information is available on the chemical species of the radionuclide under consideration and the laboratory conditions for determining Kd-values. Sorption data derived from literature are neither comparable nor generally applicable due to the wide range in the composition of the aqueous and the solid phases applied in migration experiments. Subsequently, standardized characterization and determination procedures are needed. To improve the reliability of a mathematical model for the prediction of radionuclide sorption on cementitious and ash-type binder materials, determination of mineral-specific sorption coefficients is indispensable.

Restricted access

Abstract  

The results of a literature survey on non-radiometric analytical techniques for the determination of long-lived radionuclides are described. The methods which have been considered are accelerator mass spectrometry, inductively coupled plasma mass spectrometry, thermal ionization mass spectrometry, resonance ionization spectrometry, resonance ionization mas spectrometry and neutron activation analysis. Neutron activation analysis has been commonly used for the determination of129I and237Np in environmental samples. Inductively coupled mass spectrometry seems likely to become the method of choice for the determination of99Tc,237Np and Pu-isotopes. The methods are discussed and the chemical separation methods described.

Restricted access

Abstract  

The reliability of the single comparator method depends mainly on the accuracy of k factors. This paper describes error in theoretical k factors, especially that due to the scattering in literature data for thermal and epithermal neutron activation cross-sections. Error calculations were performed for thirteen elements using comparator sets of60Co−198Au and95Zr−97Zr to evaluate the accuracy of this method.

Restricted access