Faculty of Pharmacy, Lj. (FFALJ)
-
Proučevanje kristalizacije nifedipina z IR spektroskopijo in termično analizo (DSC) = Investigation of nifedipine crystallization by using IR spectroscopy and thermal analysis (DSC) : diplomska nalogaPopović, Ana, farmacevtkaInfrardeča spektroskopija je nedestruktivna, neinvazivna metoda, s katero lahko spremljamo prehod amorfne v kristalno obliko trdne snovi. Glede na to, da ima amorfna oblika visjo entalpijo, veèjo ... entropijo, večjo Gibbsovo prosto energijo in večjo hitrost raztapljanja, je delež amorfne oblike učinkovine v zdravilnih pripravkih bistven zaradi posrednega vpliva na biološko uporabnost. S pomočjo infrardeče spektroskopije lahko spremljamo prehod ene oblike (amorfne ali kristalne) v drugo, tako na kvantitativni kot na kvalitativni ravni. Za kvantitativno analizo je bolj primerna IR spektroskopija v bliznjem IR območju, medtem ko za analizo same strukture učinkovin bolj pogosto uporabljamo srednje obmoèje infrardečega spektra. Na začetku eksperimentalnega dela smo s primerjalno analizo zmesi nifedipina in MCC z uporabo dveh tehnik (DR tehniko v bliznjem IR obmoèju in ATR tehniko v srednjem IR obmoèju) poskusali ugotoviti katera izmed tehnik je bolj primerna za kvantitativno analizo praskaste zmesi. S kemometrično metodo PLS (metoda regresije več dimenzionalnih podatkov na osnovi vsote najmanjših kvadratov), smo izvedli kalibracijo metode ter izračunali koeficient determinacije in napako modeliranja. Nato smo s pomočjo izračuna osnovnih kemometričnih parametrov ustrezni model tudi validirali. Po izvedbi Ćleave-one-outĆ in Ćleave-many-out crossĆ validacije smo izračunali ustrezen koeficient determinacije, napako napovedi ter stevilo faktorjev potrebnih za najbolj točno kvantitativno analizo posamezne komponente v zmesi.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [Popović, A.], 2005Language - slovenianCOBISS.SI-ID - 1841777
Author
Popović, Ana, farmacevtka
Other authors
Srčič, Stanko |
Zega, Anamarija
Topics
IR spektroskopija |
termična analiza |
kemometrija |
nifedipin |
kvantitativna analiza |
validacija
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Call number – location, accession no. ... |
Copy status | Reservation |
---|---|---|
Knjižnica dp 0000000615 Popović Ana Proučevanje IN: 0008668 Knjižnica dp 615 Popović Ana Proučevanje IN: 0008668 |
available - reading room
|
![loading ... loading ...](themes/default/img/ajax-loading.gif)
![loading ... loading ...](themes/default/img/ajax-loading.gif)
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|---|
Popović, Ana, farmacevtka | ![]() |
Srčič, Stanko | 09031 |
Zega, Anamarija | 18633 |
Source: Personal bibliographies
and: SICRIS
Select pickup location:
Material pickup by post
Delivery address:
Address is missing from the member's data.
The address retrieval service is currently unavailable, please try again.
By clicking the "OK" button, you will confirm the pickup location selected above and complete the reservation process.
By clicking the "OK" button, you will confirm the above pickup location and delivery address, and complete the reservation process.
By clicking the "OK" button, you will confirm the address selected above and complete the reservation process.
Notification
Automatic login and reservation service currently not available. You can reserve the material on the Biblos portal or try again here later.
Subject headings in COBISS General List of Subject Headings
Select pickup location
The material from the parent unit is free. If the material is delivered to the pickup location from another unit, the library may charge you for this service.
Pickup location | Material status | Reservation |
---|
Reservation in progress
Please wait a moment.
Reservation was successful.
Reservation failed.
Reservation...
Membership card:
Pickup location: