https://commons.ru.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://commons.ru.ac.za/vital/access/manager/Repository/vital:26403 Wed 12 May 2021 23:43:01 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7185 Wed 12 May 2021 23:42:09 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6826 Wed 12 May 2021 23:40:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6162 Wed 12 May 2021 23:29:23 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6192 Wed 12 May 2021 23:28:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6412 Wed 12 May 2021 23:21:15 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7144 Wed 12 May 2021 23:19:58 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6884 Wed 12 May 2021 22:50:27 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6367 Wed 12 May 2021 22:38:56 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6819 Wed 12 May 2021 22:20:44 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26394 Wed 12 May 2021 22:18:50 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6827 Wed 12 May 2021 20:49:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7141 Wed 12 May 2021 19:32:54 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7179 Wed 12 May 2021 19:23:46 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6381 Wed 12 May 2021 19:07:40 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7140 Wed 12 May 2021 19:04:33 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7133 Wed 12 May 2021 18:49:33 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26396 Wed 12 May 2021 18:45:29 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6371 Wed 12 May 2021 18:43:08 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26392 Wed 12 May 2021 18:29:44 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6391 Wed 12 May 2021 18:27:34 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7011 Wed 12 May 2021 18:24:35 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6814 Wed 12 May 2021 18:18:40 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6808 Wed 12 May 2021 18:17:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26397 Wed 12 May 2021 17:59:24 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6272 Wed 12 May 2021 17:54:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29661 Wed 12 May 2021 17:39:00 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26413 Wed 12 May 2021 17:38:43 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6815 Wed 12 May 2021 17:27:15 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26389 Wed 12 May 2021 17:21:18 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6880 Wed 12 May 2021 17:19:14 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6828 Wed 12 May 2021 17:11:12 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6407 Wed 12 May 2021 17:05:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7158 Wed 12 May 2021 16:19:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6374 Wed 12 May 2021 16:12:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7021 Wed 12 May 2021 16:06:06 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6405 Wed 07 Jul 2021 13:48:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7083 Tue 31 Aug 2021 12:45:56 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7079 Tue 31 Aug 2021 12:38:55 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7088 Tue 31 Aug 2021 12:38:55 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7080 Tue 31 Aug 2021 12:38:54 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7072 Tue 31 Aug 2021 12:38:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7087 Tue 31 Aug 2021 12:38:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7095 Tue 31 Aug 2021 12:38:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6806 Tue 31 Aug 2021 10:04:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6813 Tue 31 Aug 2021 10:04:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6389 Tue 24 Aug 2021 16:43:47 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6390 Tue 17 Aug 2021 13:41:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6386 Tue 17 Aug 2021 13:41:29 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6999 Tue 10 Aug 2021 12:38:34 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6933 20 μm) species composition and distribution along a repeat transect between Cape Town and the Prince Edward Islands were investigated in early austral autumn (April/May) 1996. Samples were collected at approximately 30 nautical mile intervals for the analysis of size-fractionated chl-a and the identification and enumeration of microphytoplankton species. Peaks in total chl-a (>1 μg 1 [superscript -1]) were recorded at the Subtropical Convergence (STC), at the Sub-Antarctic Front (SAF) and in the waters surrounding the Prince Edward Islands. In addition, a minor peak in chl-a concentration was recorded in the continental shelf waters. At stations where elevated chl-a concentrations were recorded, microphytoplankton generally formed a substantial contribution (-10%) to total chlorophyll. Outside these regions, total chlorophyll concentrations were lower (<0.9 μg 1 [superscript -1]) and almost entirely dominated by nano- and picophytoplankton, which contributed >95% of the total. Microphytoplankton species composition along both transects were dominated by chain-forming species of the genera Chaetoceros (mainly C. neglectum, C. peruvianus and C. constrictus), Nitzschia spp. and Pseudoeunotia doliolus. Cluster and ordination analysis based on species composition identified five distinct microphytoplankton assemblages, which were closely associated with the different water masses in the region between Cape Town and the Prince Edward Islands. The microphytoplankton species composition and biogeographic zones identified during this investigation are in general agreement with similar studies conducted in the south-west Indian Ocean during the austral summer, which suggests that there are little seasonal trends in both the microphytoplankton species composition and biogeographic zonation.]]> Thu 25 Apr 2024 15:50:06 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6901 Thu 25 Apr 2024 15:47:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6928 200 μm) was investigated on three occasions in a warm temperate, temporarily open/closed estuary situated along the southern African coastline. Results of the investigation indicated that the microheterotrophs represented the most important consumers of bacteria and chlorophyll (chl)-a <5.0 μm. The low impact of the mesozooplankton on the bacteria and chl-a <5.0 μm during the study appeared to be related to the inability of the larger zooplankton to feed efficiently on small particles. During those periods when total chl-a concentration was dominated by picophytoplankton (<2.0 μm) and microphytoplankton (>20 μm), mesozooplankton were unable to feed efficiently on the chl-a due to feeding constraints. In response to the unfavorable size structure of the phytoplankton assemblages, mesozooplankton appeared to consume the microheterotrophs. The negative impact of the mesozooplankton on the microheterotrophs resulted in a decrease in the impact of these organisms on the bacteria and the chl-a <5.0 μm. This result is consistent with the predator-prey cascades. On the other hand, when the total chl-a was dominated by nanophytoplankton (2–20 μm), mesozooplankton were able to feed directly on the phytoplankton. Results of the study indicate that size structure of the phytoplankton assemblages within estuaries plays an important role in mediating the trophic interactions between the various components of the plankton food web.]]> Thu 25 Apr 2024 15:44:49 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6895 Thu 20 Jul 2023 11:01:01 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6357 -cyclodextrin concentrations were investigated. A polyimide fused-silica square capillary column (75 μm I.D. × 360 μm O.D.) with a total length of 60.0 cm and effective length of 45.0 cm was used for the separation. The final BGE consisted of 20 mM phosphoric acid, 40 mM SDS and 12 mM -cyclodextrin (pH 2.2) using reverse polarity with a voltage of −17.5 kV. Samples were injected electrokinetically at −5 kV for 3 s for the qualitative analysis and hydrodynamically at 20 mbar for 0.6 s for the quantitative assay. The total run time was 22 min and the limits of detection were 3.13 μg/ml and 1.88 μg/ml for rutin and quercetin, respectively. Fingerprint profiles of the solid oral dosage forms and the results of the quantitative analysis indicated that there were major discrepancies in the marker content between products and illustrates the value of this method for use as a procedure to assess product quality of commercially available Ginkgo biloba products.]]> Thu 15 Jul 2021 21:30:37 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6396 Thu 15 Jul 2021 21:30:35 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7094 Thu 15 Jul 2021 20:34:36 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7098 Thu 15 Jul 2021 20:34:35 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7022 Thu 15 Jul 2021 20:20:35 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6380 Thu 13 May 2021 08:51:57 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6334 Thu 13 May 2021 07:17:56 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6382 Thu 13 May 2021 07:14:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26405 Thu 13 May 2021 07:04:33 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6138 Thu 13 May 2021 06:55:49 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6824 Thu 13 May 2021 06:39:33 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6817 Thu 13 May 2021 06:16:00 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6379 Thu 13 May 2021 04:44:57 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6384 Thu 13 May 2021 04:40:32 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7131 Thu 13 May 2021 04:10:36 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26399 Thu 13 May 2021 03:40:57 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6414 Thu 13 May 2021 03:38:48 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7130 Thu 13 May 2021 03:38:40 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6372 Thu 13 May 2021 03:20:33 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7128 Thu 13 May 2021 03:09:03 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6370 Thu 13 May 2021 02:44:03 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26388 Thu 13 May 2021 02:28:41 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26391 Thu 13 May 2021 01:46:11 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6820 Thu 13 May 2021 01:25:54 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7182 Thu 13 May 2021 01:25:23 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26415 Thu 13 May 2021 01:23:46 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6377 Thu 13 May 2021 01:13:03 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6364 Thu 13 May 2021 00:56:56 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6373 Thu 13 May 2021 00:42:47 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6499 Thu 11 Aug 2022 07:01:07 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7188 Thu 07 Jul 2022 16:08:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7189 Thu 07 Jul 2022 16:08:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6252 Sat 20 Apr 2024 08:40:16 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7097 Mon 15 Aug 2022 13:41:50 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:61393 Mon 04 Mar 2024 14:10:15 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6904 Fri 26 Apr 2024 12:36:02 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6844 Fri 26 Apr 2024 12:34:22 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7075 Fri 26 Apr 2024 12:16:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6856 Fri 26 Apr 2024 12:15:27 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6953 Fri 26 Apr 2024 12:14:57 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6863 Fri 26 Apr 2024 11:28:24 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6857 Fri 26 Apr 2024 11:27:07 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6956 Fri 26 Apr 2024 10:51:16 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6878 Fri 26 Apr 2024 10:46:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6969 Fri 26 Apr 2024 10:44:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6839 Fri 26 Apr 2024 10:33:17 SAST ]]>