https://commons.ufh.ac.za/vital/access/manager/Index en-us 5 https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5665 Wed 21 Jul 2021 13:46:25 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7011 Wed 15 May 2024 15:01:03 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:1416 Wed 12 Oct 2022 11:55:46 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2814 Wed 12 May 2021 23:42:17 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4604 Wed 12 May 2021 23:36:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3830 randomly methylated-β-CD (RM-β-CD) > β-CD ≈ 2-hydroxypropyl-β-CD (2HP-β- CD) > γ-CD ≥ 2-hydroxypropyl-γ-CD (2HP-γ-CD). An industrially applicable kneading method yielded binary systems with spectral and thermal characteristics similar to the respective physical mixtures, implying weak solid-state inclusion complexation. Preparation of an amorphous nifedipine - RM-β-CD product using a heating method is reported. A 1.7- and 1.9-fold improvement in solid-state nifedipine photostability was observed for I : 1 molar ratio β-CD and γ-CD kneaded products, respectively, when exposed to window-filtered daylight and could be attributed to changes in opacity of the crystalline kneaded products. The remaining cyclodextrins produced negligible nifedipine photostabilization. Nifedipine in vitro dissolution was improved considerably from γ-CD and RM-β-CD .kneaded products as a result of increased nifedipine wettability, solubility and reduced particle size. iii]]> Wed 12 May 2021 23:14:34 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:35813 Wed 12 May 2021 23:09:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:693 Wed 12 May 2021 20:36:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2807 Wed 12 May 2021 20:23:26 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38863 Wed 12 May 2021 20:12:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5224 0.05). The length-frequency distribution analysis revealed that the three species had the same growth rate regardless of habitat type. However, females grew faster than males. An investigation of reproductive biology showed that the three species have low fecundity and they are asynchronous spawners, with a breeding peak during August and September period. Furthermore, the length-fecundity relationships for L. ''pinkhead'', and 0. argyrosoma "red" indicated that fecundity was more closely related to length in the south eastern side than in the south western side. Based on the above characteristics of L. ''pinkhead'', 0. argyrosoma "red" and C. cf virginalis, and the substrate types, it was strongly suggested that the existing sanctuary (lightly fished) in the south eastern side of the lake could immediately be enlarged to conserve the fish stocks, favourable substratum and aquatic animals that may be of tourists concern.]]> Wed 12 May 2021 20:03:44 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:37490 Wed 12 May 2021 19:54:20 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:1246 Wed 12 May 2021 19:45:17 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4409 Wed 12 May 2021 19:42:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:1551 Wed 12 May 2021 19:41:18 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4007 Wed 12 May 2021 19:29:13 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2361 Wed 12 May 2021 19:24:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2136 Wed 12 May 2021 19:24:02 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2543 Wed 12 May 2021 18:46:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2945 Wed 12 May 2021 18:46:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2278 Wed 12 May 2021 18:43:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39058 Wed 12 May 2021 18:41:03 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5233 Wed 12 May 2021 18:40:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3085 Wed 12 May 2021 18:30:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4417 99% d.e. for the bomane-2,3-diol acetals. In order to increase diastereofacial selectivity, a camphor-derived diol having a bulky substituent at C-10 was prepared, viz., phenyl 2,3-dihydroxybomane-10sulfonate, and α,β-unsaturated acetals of this diol were shown to undergo Simmons-Smith cyclopropanation with complete topological control (>99% d.e.), the diastereoselectivities being conveniently determined by ¹H and ¹³C NMR spectroscopy. Computer modelling, with the software package HYPERCHEM®, was used to explore the stereochemical aspects of the Simmons-Smith cyclopropanation, and hydrolysis of one of the cyclopropyl acetals has permitted the diastereoselective bias to be confirmed. (+)-Pinane-2,3-diol was also investigated as a chiral auxiliary in the Simmons-Smith reactions of α,β-unsaturated aldehydes, and moderate diastereoselectivities (20-30% d.e.) were observed. In a series of exploratory studies, the Diels-Alder reaction of the 2,3-dihydroxybomane-10-sulfonate acetal of trans-cinnamaldehyde with cyclopentadiene afforded a single cycloadduct, while OSO₄ dihydroxylation, MCPBA oxidation and alkylation of chiral acetals produced from both bomane-2,3-diol and phenyl 2,3-dihydroxybomane-10-sulfonate were less selective.]]> Wed 12 May 2021 18:04:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29770 Wed 12 May 2021 17:56:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2365 Wed 12 May 2021 17:46:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4383 Wed 12 May 2021 17:30:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3838 Wed 12 May 2021 17:22:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29769 Wed 12 May 2021 16:43:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4429 Wed 12 May 2021 16:36:44 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5236 Wed 12 May 2021 16:33:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2131 Wed 12 May 2021 16:10:27 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:1900 Wed 12 May 2021 15:54:17 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43013 Wed 12 May 2021 13:59:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42135 Wed 12 May 2021 13:48:20 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6943 Wed 10 Jul 2024 11:49:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:73724 Wed 03 Jul 2024 10:51:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6342 Tue 14 May 2024 12:38:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6384 Tue 14 May 2024 12:37:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6366 cobra>viper. These differences may be due to the thickness of the skin and the hinge:scale ratio. The results indicate that shed snake skin is not a model membrane for human skin.]]> Tue 14 May 2024 12:37:35 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6383 Tue 14 May 2024 12:37:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6344 Tue 14 May 2024 12:35:42 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6343 Tue 14 May 2024 12:35:18 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6341 Tue 14 May 2024 12:34:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6424 Tue 14 May 2024 12:12:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6423 Tue 14 May 2024 10:44:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40082 Tue 14 May 2024 06:40:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44213 Tue 14 May 2024 06:39:32 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:74015 Tue 09 Jul 2024 13:02:10 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:73495 Thu 20 Jun 2024 08:36:48 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:73502 Thu 20 Jun 2024 08:26:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2110 Thu 13 May 2021 15:05:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2631 Thu 13 May 2021 08:45:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4198 Thu 13 May 2021 08:12:44 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5510 Thu 13 May 2021 07:44:17 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4010 Thu 13 May 2021 07:34:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4218 Thu 13 May 2021 07:07:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3005 Thu 13 May 2021 07:05:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2534 Thu 13 May 2021 06:58:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5733 Thu 13 May 2021 06:47:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2567 Thu 13 May 2021 06:18:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7016 Thu 13 May 2021 06:16:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3341 Thu 13 May 2021 06:13:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:37550 Thu 13 May 2021 06:13:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2532 Thu 13 May 2021 06:10:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5713 Thu 13 May 2021 06:04:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4316 Mn⁽¹¹⁾ > Fe⁽¹¹⁾Pc > Ni⁽¹¹⁾Pc > Cu⁽¹¹⁾Pc > H₂Pc > Zn⁽¹¹⁾Pc > Bare GCE. A report is also given on electrocatalysis using [CoTSPc]⁴⁻ electrochemically deposited on the glassy carbon electrode. This was also found to enhance the anodic peak currents for the oxidation of all phenolic compounds. A report on the effects of scan rate, operating potential, analyte concentration and other variables is also given.]]> Thu 13 May 2021 06:04:02 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:21103 Thu 13 May 2021 05:59:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5306 Thu 13 May 2021 05:34:12 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5242 Thu 13 May 2021 05:30:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3042 Thu 13 May 2021 04:51:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3455 Thu 13 May 2021 04:50:35 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:11022 Thu 13 May 2021 04:42:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5705 Thu 13 May 2021 04:30:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5467 Thu 13 May 2021 04:24:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3080 Thu 13 May 2021 03:47:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3089 Thu 13 May 2021 03:41:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2362 Thu 13 May 2021 03:40:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6148 Thu 13 May 2021 03:27:16 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2992 Thu 13 May 2021 03:16:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2776 Thu 13 May 2021 03:08:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3023 Thu 13 May 2021 03:01:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5400 Thu 13 May 2021 01:54:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2642 Thu 13 May 2021 01:42:00 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2759 Thu 13 May 2021 01:03:42 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29653 Thu 13 May 2021 00:51:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40625 Thu 01 Feb 2024 09:09:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6921 Sun 16 Jun 2024 07:19:27 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:35780 Mon 13 May 2024 15:06:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38877 Mon 13 May 2024 12:30:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36801 Mon 13 May 2024 12:29:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6681 Mon 13 May 2024 11:20:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6697 Mon 13 May 2024 11:01:07 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:72908 Mon 03 Jun 2024 13:08:20 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:72894 Mon 03 Jun 2024 08:46:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:57101 10−2 mol dm−3) , two electron oxidation of the [Pc (−2) LnPc (−2) ] − species directly to [Pc (−1) LnPc (−1) ] + occurs.]]> Fri 30 Sep 2022 10:01:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:57100 Fri 30 Sep 2022 09:56:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6944 Fri 26 Apr 2024 12:45:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:72437 Fri 17 May 2024 05:21:52 SAST ]]>