http://vital.seals.ac.za:8080/vital/access/manager/Index en-us 5 http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2750 Wed 12 May 2021 23:44:21 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2608 Wed 12 May 2021 23:41:06 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1208 Wed 12 May 2021 23:18:49 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:20569 Wed 12 May 2021 23:14:52 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39197 Wed 12 May 2021 23:14:46 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5924 Wed 12 May 2021 23:08:40 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1333 Wed 12 May 2021 23:03:16 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1334 Wed 12 May 2021 23:02:41 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:20556 Wed 12 May 2021 22:55:14 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3257 .05, in all instances), although the two groups were clearly differentiated on the basis of a history of reported concussions (p = < .05). Video analyses documented the tackling maneuvers observed amongst the players during all matches across the rugby season revealing a sobering average of more than a thousand tackles per player, excluding any contact practice sessions. Five rugby players (n = 5) who were observed to have a head jarring event were also isolated for individualized postconcussive follow-up analysis of their neurocognitive profiles. Measures included the ImPACT Verbal and Visual Memory, Visual Motor Speed and Reaction Time composites and the Purdue Pegboard. Independent and dependent statistical analyses were employed to compare the rugby versus control group neurocognitive test profiles at and between the three test intervals. Correlational analyses explored the association between concussion, tackling and neurocognitive test outcomes. Descriptive comparisons of individual neurocognitive test scores with normative data were employed for the case analyses. Taken together, the results implicated vulnerability amongst club rugby players on the motor and speeded tasks, with less robust indications on the memory tasks. While limited in terms of its small sample size, it is considered that the outcome of the study was rendered more robust by virtue of being methodologically multifaceted with heuristic implications for future research studies in the area. The novel inclusion of tackling data as well as fine-tuned case analyses, were of particular relevance in that regard. The results add to a growing body of literature that implicates deleterious neurocognitive effects in participants of a sport such as rugby due to repetitive head jarring incidents that are intrinsic to the game.]]> Wed 12 May 2021 22:41:51 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2327 Wed 12 May 2021 22:22:20 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4713 Wed 12 May 2021 20:50:50 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2625 Wed 12 May 2021 19:59:01 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:24333 Wed 12 May 2021 19:41:54 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4718 Wed 12 May 2021 19:33:32 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4559 Wed 12 May 2021 19:26:07 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6049 Wed 12 May 2021 19:15:57 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5929 Wed 12 May 2021 19:10:20 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:28594 Wed 12 May 2021 19:05:02 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3540 Wed 12 May 2021 19:02:56 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4538 Wed 12 May 2021 19:02:23 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3722 Wed 12 May 2021 18:59:27 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3400 Wed 12 May 2021 18:55:23 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:27588 Wed 12 May 2021 18:45:03 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:9702 Wed 12 May 2021 18:31:38 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3403 Wed 12 May 2021 18:27:42 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:20605 Wed 12 May 2021 18:25:39 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3658 Wed 12 May 2021 18:17:45 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4537 Wed 12 May 2021 17:56:16 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6048 Wed 12 May 2021 17:56:06 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:29362 Wed 12 May 2021 17:42:31 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1329 Wed 12 May 2021 17:41:22 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5431 Wed 12 May 2021 17:26:03 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6047 Wed 12 May 2021 17:17:41 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:20473 Wed 12 May 2021 17:17:27 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2053 Wed 12 May 2021 17:16:42 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5933 Wed 12 May 2021 17:13:05 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4545 Wed 12 May 2021 17:12:36 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:9710 Wed 12 May 2021 16:45:59 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:28214 Wed 12 May 2021 16:42:40 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2124 Wed 12 May 2021 16:29:35 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:10677 Wed 12 May 2021 16:26:06 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:9573 Wed 12 May 2021 16:19:06 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:24320 Wed 12 May 2021 15:57:34 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:26563 50 %) in the upper to middle reaches (river), but low (< 20 %) in the lower reaches (estuary). The current investigation represents the first attempt to assess the validity of the River Continuum Concept (RCC) in a southern African temperate river. The phytoplankton and phytobenthos communities, and chl-a concentration followed a trend similar to that proposed for the river continuum concept (RCC). The middle reaches based on the phytobenthos or phytoplankton communities and chl-a concentrations which were employed as proxies for primary production, were the most productive, while the upper reaches were the least primary productive. The evaluation of organic matter contributions to the SPM and detritus along the river–estuary continuum provided a baseline assessment of the nature and sources of potential food for consumers inhabiting different locations during different times of the year. Incorporating such spatio-temporal variations in SPM and detritus into food web studies will improve our understanding of the flow of carbon through aquatic systems.]]> Wed 12 May 2021 15:56:40 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4787 Wed 12 May 2021 15:54:59 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:10345 Wed 12 May 2021 15:49:56 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5936 Wed 12 May 2021 15:48:11 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2019 Tue 15 Aug 2023 13:21:16 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39198 Tue 07 May 2024 11:08:42 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5381 Thu 13 May 2021 16:08:44 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4543 Thu 13 May 2021 11:46:40 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2057 Thu 13 May 2021 09:51:06 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5934 Thu 13 May 2021 08:14:57 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:28058 0.25 mm was 61.7 percent for soils under NT and 56.2 percent for soils under CT. The PSDI was 55.2 percent for soils under NT and 61.15 percent for soils under CT. The SA was 43.2 percent for soils under NT and 37.89 percent for soils under CT. The WDC was 125.7 g/kg for SCL soils and 151.4 g/kg for SL soils. The CDR was 0.5 for both SCL and SL soils. The DR was 0.9 for SCL soils and 0.8 for SL soils. The CFI was 0.5 for both SCL and SL soils. The ASC was 56.2 g/kg for SCL soils and 115 g/kg for SL soils. The MWDw was 1.5 mm for SCL soils and 1.4 mm for SL soils. The MWDd was 3.6 mm for SCL soils and 3.6 mm for SL soils. The percent WSA > 0.25 mm was 53.0 percent for SCL soils and 62.5 percent for SL soils. The PSDI was 59.2 percent for SCL soils and 59.7 percent for SL soils. The SA was 33.6 percent for SCL soils and 45.2 percent for SL soils. The WDC was 313.3 g/kg for kaolinitic soils and 120.7 g/kg for quartz dominated soils. The CDR was 0.5 for kaolinitic soils and 0.5 for quartz dominated soils. The DR was 0.9 for kaolinitic soils and 0.8 for quartz dominated soils. The CFI was 0.5 for kaolinitic soils and 0.5 for quartz dominated soils. The ASC was 110.0 g/kg for kaolinitic soils and 101.7 g/kg for quartz dominated soils. The WSA > 0.25 mm was 57.3 percent for quartz dominated soils and 68.4 percent for kaolinitic soils. The MWDw was 1.6 mm for quartz dominated soils and 0.8 mm for kaolinitic soils. The MWDd was 3.6 mm for quartz dominated soils and 3.4 mm for kaolinitic soils. The PSDI was 56.3 for quartz dominated soils and 76.0 for kaolinitic soils.]]> Thu 13 May 2021 07:13:24 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4541 Thu 13 May 2021 07:06:37 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2697 Thu 13 May 2021 06:55:54 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6053 Thu 13 May 2021 06:50:16 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6055 Thu 13 May 2021 06:37:22 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3651 Thu 13 May 2021 06:30:01 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5935 Thu 13 May 2021 06:26:23 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4784 Thu 13 May 2021 06:23:12 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:27439 Thu 13 May 2021 06:06:15 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5928 Thu 13 May 2021 06:02:55 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:20583 Thu 13 May 2021 05:56:13 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2017 Thu 13 May 2021 05:45:54 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:21001 Thu 13 May 2021 05:30:49 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5921 Thu 13 May 2021 05:30:11 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:28522 Thu 13 May 2021 05:29:11 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3650 Thu 13 May 2021 05:27:54 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4892 Thu 13 May 2021 05:12:06 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:29588 Thu 13 May 2021 05:09:48 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1331 Thu 13 May 2021 05:04:10 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:21109 Thu 13 May 2021 04:42:08 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:20799 Thu 13 May 2021 04:37:54 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:29359 Thu 13 May 2021 04:32:25 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:26740 Thu 13 May 2021 04:01:16 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4163 Thu 13 May 2021 03:59:49 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5940 1.00) in BION® treated plants, reflecting increased weevil preferences for SAinduced water hyacinth plants. This concluded that SA-mediated defences are not effective against insect herbivory in water hyacinth plants, but are in fact palatable to insect herbivores, which reflects ecological and physiological costs of SA-mediated defences (pathogen defences) in water hyacinth. Biochemical analyses of leaves exhibited increases in nitrogen content in BION® treated plants. These elevated levels of nitrogenous compounds account for the increases in mirid and weevil preferences for BION® treated plants. The increases in nitrogenous compounds are probably structural proteins (e.g. peroxidises), because leaves treated with BION® increased in toughness, but only when exposed to herbivory. Regardless, insect herbivory was elevated on these leaves, probably because the nitrogenous compounds were nutritionally viable for the insects.]]> Thu 13 May 2021 03:55:03 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:28608 Thu 13 May 2021 03:49:57 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4544 Thu 13 May 2021 03:36:01 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3260 Thu 13 May 2021 03:34:18 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:26583 Thu 13 May 2021 03:30:11 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:26588 Thu 13 May 2021 03:30:04 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6054 Thu 13 May 2021 03:19:11 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:28327 Thu 13 May 2021 03:02:03 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:20817 Thu 13 May 2021 02:30:07 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4160 Thu 13 May 2021 01:48:27 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:26866 Thu 13 May 2021 01:38:18 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:28607 Thu 13 May 2021 01:16:43 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:28593 Thu 13 May 2021 00:58:01 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:26889 Thu 13 May 2021 00:09:50 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:28596 Thu 01 Feb 2024 09:56:38 SAST ]]>