Wyniki wyszukiwania dla: ENANTIOMERIC FRACTION

• The enantiomeric determination of chloro-precursors of methamphetamine

  Publikacja

  • J. Płotka-Wasylka
  • M. Biziuk
  • C. Morrison

  - Rok 2011

  Impurity profiling and classification of seized methamphetamine may supply valuable information with respect to the conditions and the chemicals used in the illicit methamphetamine manufacture and may provide information on the original source of the sample. Determination of the stereochemical makeup of forensic samples is important as well for the same reasons. Laboratories in many places are engaged in clandestine manufacture...

• The theoretical description of friction force in bio-joints as function of cartilage roughness

  Publikacja

  • S. Chizhik
  • K. Wierzcholski
  • A. Miszczak

  - SCIENTIFIC PROBLEMS OF MACHINES OPERATION AND MAINTENANCE - Rok 2006

  Wartości sił tarcia w naturalnych stawach człowieka a szczególnie w endoprotezach stawu biodrowego rzutują na proces zużywania się powierzchni stawowych. Dlatego problem wyznaczania sił tarcia w biołożyskach jest bardzo istotny. W trakcie chodzenia mamy co najmniej ruch sferycznej powierzchni głowy w dwóch różnych kierunkach dla naturalnych i sztucznych stawów biodrowych człowieka. Dlatego też siły tarcia występują co najmniej...

• Action-reaction based synthesis of acoustic wavefield equations

  Publikacja

  • H. Lasota

  - HYDROACOUSTICS - Rok 2011

  The analysis of acoustic fields is usually based on the well-known mathematics of second order partial differential equations called wave equations. The author explores the duality and symmetry of linear fluid mechanics and develops two distinct equations of acoustics on the basis of a causal approach to local small-scale phenomena. Wavefields that are solutions of these equations have different composition, the spherical pressure...

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• A novel methodology for the enantiomeric resolution of methamphetamine, its precursors and intermediates by GC-MS

  Publikacja

  • J. Płotka-Wasylka
  • C. Morrison
  • M. Biziuk

  - Rok 2013

  Impurity profiling and classification of abused drugs using chiral analytical techniques is of particular interest and importance because of the additional information obtained from this approach. When these methods are applied to the synthesis of illicitly used substances, they can supply valuable information about the conditions/chemicals used in the synthesis. In this study, simultaneous chiral separation of methylamphetamine,...

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• Enantiomeric self-recognition of a facial amphiphile triggered by [{Pd(ONO2)(en)}2]

  Publikacja

  • L. Isaacs
  • D. Witt

  - ANGEWANDTE CHEMIE-INTERNATIONAL EDITION - Rok 2002

  Opisano syntezę pochodnych glikolurylu tworzących dimeryczne struktury w roztworze wodnym prowadzące do samorozpoznania enancjomerycznego. Struktury te uzyskano dzięki koordynacji do [{Pd(ONO2)(en)}2].

• Analysis of volatile fraction of hybrid fruit pulp using Proton Transfer Reaction - Time-Of-Flight Mass Spectrometry

  Publikacja

  • D. Sieńska
  • M. Lubinska-Szczygeł
  • A. Różańska
  • T. Dymerski
  • J. Namieśnik

  - Rok 2017

  Fruits and vegetables are important ingredients in human diet. Because of this, it is very important to know their exact composition and to control their quality. Based on the aroma of food products, it is possible to pre-evaluate their quality and freshness. The aim of this work was to characterize the volatile fraction of the hybrid fruit ‘sweetie’ using the modern analytical device PTR-TOFMS. Hybrid fruit samples are human-made...

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• Function

  Czasopisma

  eISSN: 2633-8823

• Two-step mechanism of J-domain action in driving Hsp70 function

  Publikacja

  • B. Tomiczek
  • W. Delewski
  • Ł. Nierzwicki
  • M. Stolarska
  • I. Grochowina
  • B. Schilke
  • R. Dutkiewicz
  • M. A. Uzarska
  • S. Ciesielski
  • J. Czub... i 2 innych

  - PLoS Computational Biology - Rok 2020

  J-domain proteins (JDPs), obligatory Hsp70 cochaperones, play critical roles in protein homeostasis. They promote key allosteric transitions that stabilize Hsp70 interaction with substrate polypeptides upon hydrolysis of its bound ATP. Although a recent crystal structure revealed the physical mode of interaction between a J-domain and an Hsp70, the structural and dynamic consequences of J-domain action once bound and how Hsp70s...

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• Application of chiral chromatography for enantiomeric separation of currently used pesticides from various chemical groups

  Publikacja

  • M. Tankiewicz

  - Rok 2012

  Chiral pesticides account for more than 25 % of currently used pesticides and this ratio is still increasing. According to the number of chiral centers in the structure, a pesticide may consist of two or multiple enantiomers or stereoisomers. Studies into the stereoselective behaviour of pesticides started in the early 1990s and most research efforts focused on understanding the environmental fate and effects of these pesticides....

• Food & Function

  Czasopisma

  ISSN: 2042-6496 , eISSN: 2042-650X