Bluetooth essentials for programmers sep 2007

... (ACL) for details 11 PAB CUNY993C-Huang 978-0-521-70375-8 July 18, 2007 8:41 Bluetooth Essentials for Programmers the delivery guarantees for L2CAP also changes the delivery guarantees for RFCOMM ... 978-0-521-70375-8 July 18, 2007 8:41 Bluetooth Essentials for Programmers these channels, and a discoverable Bluetooth device periodically listens for and replies to...

Ngày tải lên: 14/09/2015, 10:29

Ngày tải lên: 04/06/2014, 12:06

... Almeroth TCP/IP Sockets in Java: Practical Guide for Programmers Kenneth L Calvert and Michael J Donahoo TCP/IP Sockets in C: Practical Guide for Programmers Michael J Donahoo and Kenneth L Calvert ... Spielman Java: Practical Guide for Programmers Zbigniew M Sikora The Struts Framework: Practical Guide for Java Programmers Sue Spielman Multicast Sockets: Pra...

Ngày tải lên: 20/08/2012, 11:57

... techniques, principally in the form of high-performance liquid chromatography (HPLC) / MS (LC/MS), mass spectrometry has become the principal method of mixture analysis in pharmaceutical research and ... ions Clearly, the ion formation process is separated from solvent evaporation process in APCI (in contrast to ESI), allowing the use of solvents unfavorable for ion formation For exampl...

Ngày tải lên: 15/12/2013, 12:15

... metabolites are important biotransformation pathways for many drugs and xenobiotics [127, 132, 133] For example, the formation of acyl glucuronide conjugate forced the withdrawal of four marketed ... was achieved for the exact mass measurements, using PEG sulfates as internal calibration substance Based on the high-resolution MS information, empirical formulae were obtained for all co...

Ngày tải lên: 15/12/2013, 12:15

... sometimes the ACD prediction of the solubility for the ionized form of bases and acids shows greater deviation than for the solubility predicted for the neutral form of the molecules Reaction of the excipients ... ACD prediction versus HPLC experimental results for the solubility of a basic compound for these studies Fast gradient methods on short columns are usually used in most...

Ngày tải lên: 15/12/2013, 12:15

... by the pressure limitation of the HPLC equipment For more information on gradient separation and developing fast HPLC methods, see Chapter 17 and Practical HPLC Method Development from Synder ... respective analytical method that is applied to a real in-process sample or a dosage form for subsequent HPLC analysis The analytical procedure must specify the manufacturer, type of filte...

Ngày tải lên: 15/12/2013, 12:15

... peak height) for peak B ≤ 1.5 Tailing factor (5% peak height) for peak A ≤ 1.5 Rt for peak A must be 12.0 ± 1.3 Rt for peak B must be 21 ± 1.0 The S/N of the LOQ solution (0.05%) for both actives ... acetonitrile The experiments for w pH 2–4 were performed on day w 1, and those for w pH 5–7 were performed on day (≈36 hr after initial prepaw ration) A further investigation was pe...

Ngày tải lên: 15/12/2013, 12:15

... analyte pKa shift) for both basic ionization centers Therefore this cors relates with a spKa of 2.7 for pyridinal nitrogen (i.e., 3.3 − 0.6 = 2.7) and with s a spKa of 4.7 for the morpholinal ... is in its neutral form No lower METHOD DEVELOPMENT APPROACHES 411 limit plateau is observed where the analyte would be in its fully ionized form Therefore, further analysis for this compound...

Ngày tải lên: 15/12/2013, 12:15

... isocratic conditions for determining the most suitable pH for the method The retention behavior of active as a function of pH (isocratic) was determined The best mobile-phase pH for further gradient ... AMDS/Dry Lab for method optimization and then use MS to confirm the separation of active species from possible co-eluting species MS/MS analysis can 426 METHOD DEVELOPMENT be performed...

Ngày tải lên: 15/12/2013, 12:15

... NORMAL-PHASE SEPARATIONS Reversed-phase HPLC is the dominant method used for the majority of pharmaceutical applications (>95%) Normal-phase chromatography may be required for separations that are not compatible ... crystals that will damage the seal over time Therefore it is recommended to wash the HPLC system with acetonitrile/water (20 : 80) for at least 30 before the system is...

Ngày tải lên: 24/12/2013, 18:15

... three basic types of molecular forces: ionic forces, polar forces, and dispersive forces Each specific technique capitalizes on each of these specific forces: Polar forces are the dominant type of ... normal-phase HPLC (see Chapter 5) Dispersive forces are employed in reversed-phase HPLC (see Chapter 4) Ionic forces are employed in ion-exchange HPLC (see Chapter 4, Section 4.10) The fourt...

Ngày tải lên: 24/12/2013, 18:15