Sodium Activity in the Heterogeneous Phase System Na-beta/Al[sub 2]O[sub 3]/Borate Glass, MeO/Me [J. Electrochem. Soc., 151, H101 (2004)]

2004 ◽  
Vol 151 (7) ◽  
pp. L7
Author(s):  
H. Näfe ◽  
S. Gollhofer
Keyword(s):  
Borate Glass ◽  
Phase System ◽  
Sodium Activity ◽  
Heterogeneous Phase

Folate-mediated targeting of albumin conjugates of paclitaxel obtained through a heterogeneous phase system

2009 ◽  
Vol 382 (1-2) ◽  
pp. 117-123 ◽  
Author(s):  
Franco Dosio ◽  
Silvia Arpicco ◽  
Barbara Stella ◽  
Paola Brusa ◽  
Luigi Cattel
Keyword(s):  
Phase System ◽  
Heterogeneous Phase

On the Problem of “Two-Phase” Activated Sludge

1991 ◽  
Vol 24 (7) ◽  
pp. 59-64 ◽  
Author(s):  
R. W. Szetela
Keyword(s):  
Activated Sludge ◽  
Single Phase ◽  
Phase System ◽  
Two Phase ◽  
Wastewater Treatment Process ◽  
Sludge Stabilization ◽  
Technological Advantage ◽  
In Series ◽  
State Models ◽  
Activated Sludge Systems

Steady-state models are presented to describe the wastewater treatment process in two activated sludge systems. One of these makes use of a single complete-mix reactor; the other one involves two complete-mix reactors arranged in series. The in-series system is equivalent to what is known as the “two-phase” activated sludge, a concept which is now being launched throughout Poland in conjunction with the PROMLECZ technology under implementation. Analysis of the mathematical models has revealed the following: (1) treatment efficiency, excess sludge production, energy consumption, and the degree of sludge stabilization are identical in the two systems; (2) there exists a technological equivalence of “two-phase” sludge with “single-phase” sludge; (3) the “two-phase” system has no technological advantage over the “single-phase” system.

Application of Ionic Liquids for the Determination of Lipophilicity Parameters Using TLC Method, and QSRR Analysis for the Antipsychotic Drugs

2020 ◽  
Vol 16 (7) ◽  
pp. 848-859
Author(s):  
Dominik Mieszkowski ◽  
Marcin Koba ◽  
Michał P. Marszałł
Keyword(s):  
Ionic Liquids ◽  
Antipsychotic Drugs ◽  
Molecular Descriptors ◽  
Harmful Effect ◽  
Correlation Coefficients ◽  
Reversed Phase ◽  
Assessment Process ◽  
Phase System ◽  
Phase Liquid ◽  
Lipophilicity Parameters

Background: Reversed-phase liquid chromatography may cause difficulties, especially in the case of basic drugs due to the strong silanophilic interactions in the partition mechanism. Recently, imidazolium-based ionic liquids additives appeared interesting and a convenient solution for suppressing the harmful effect of free residuals of silanol groups, allowing remodeling of the stationary/mobile-phase system, and thus improving the lipophilicity assessment process. Objective: The aim of the study was to evaluate the retention behavior of basic antipsychotics using various RP-LC systems, and compare them with data obtained from the modified ionic-liquids RP-TLC systems, and perform the QSRR analysis. Methods: Retention and lipophilicity parameters of diverse antipsychotics have been examined in various RP-LC systems. Lipophilicity indices were compared with miscellaneous computed logP values. Furthermore, a large number of molecular descriptors have been computed and compared using various medicinal chemistry software, in order to contribute to the analysis of QSRR. Results: Designated correlation coefficients showed that lipophilicity parameters from TLC systems without [EMIM][BF4] additive correlates very poor with the calculated logPs indices, whereas the indices from the traditional HPLC and TLC systems (with [EMIM][BF4]) were clearly better. Furthermore, QSRR analysis performed for these experimentally obtained lipophilicity parameters showed significant relationships between the retention constants (RO>M, logkw) and the in silico calculated physicochemical molecular descriptors. Conclusion: ILs additive may be a significant factor affecting the lipophilicity of basic compounds, thus their use may be favorable in lipophilicity assessment studies. QSRR models with ILs showed that they may be useful in searching/or predicting HPLC/TLC retention parameters for the new/other antipsychotic drugs.

Interphase distribution of 2-furylethylenes

1985 ◽  
Vol 50 (8) ◽  
pp. 1642-1647 ◽  
Author(s):  
Štefan Baláž ◽  
Anton Kuchár ◽  
Ernest Šturdík ◽  
Michal Rosenberg ◽  
Ladislav Štibrányi ◽  
...  
Keyword(s):  
Partition Coefficient ◽  
Partition Coefficients ◽  
Transport Rate ◽  
Phase System ◽  
Two Phase ◽  
Interphase Distribution ◽  
Distribution Kinetics ◽  
System 1 ◽  
Kinetics Of

The distribution kinetics of 35 2-furylethylene derivatives in two-phase system 1-octanol-water was investigated. The transport rate parameters in direction water-1-octanol (l1) and backwards (l2) are partition coefficient P = l1/l2 dependent according to equations l1 = logP - log(βP + 1) + const., l2 = -log(βP + 1) + const., const. = -5.600, β = 0.261. Importance of this finding for assesment of distribution of compounds under investigation in biosystems and also the suitability of the presented method for determination of partition coefficients are discussed.

scholarly journals Rapid conversion of highly porous borate glass microspheres into hydroxyapatite

2021 ◽  
Author(s):  
Md Towhidul Islam ◽  
Laura Macri-Pellizzeri ◽  
Virginie Sottile ◽  
Ifty Ahmed
Keyword(s):  
Borate Glass ◽  
Rapid Development ◽  
Glass Microspheres ◽  
Porous Hydroxyapatite ◽  
Interconnected Porosity ◽  
Highly Porous ◽  
Rapid Conversion

This paper reports on the rapid development of porous hydroxyapatite (HA) microspheres with large external pores and fully interconnected porosity.

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