https://commons.ufh.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9852 Wed 13 Mar 2024 10:42:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:808 Wed 12 Oct 2022 12:46:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4639 Wed 12 Oct 2022 12:31:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:1548 Tue 18 Jul 2023 22:55:00 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9984 Thu 13 May 2021 16:27:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10369 Thu 13 May 2021 14:50:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8544 Thu 13 May 2021 13:15:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9354 Thu 13 May 2021 12:29:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5232 Thu 13 May 2021 10:47:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:1935 Thu 13 May 2021 09:26:05 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9742 Thu 13 May 2021 08:18:57 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4631 Thu 13 May 2021 08:16:07 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:6032 Thu 13 May 2021 08:11:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3439 Thu 13 May 2021 08:11:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3986 Thu 13 May 2021 08:03:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5832 Thu 13 May 2021 07:35:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:765 Thu 13 May 2021 07:35:22 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5328 Thu 13 May 2021 07:25:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2006 Thu 13 May 2021 07:25:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3479 Thu 13 May 2021 07:13:13 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:948 Thu 13 May 2021 07:11:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:737 Thu 13 May 2021 06:55:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8599 Thu 13 May 2021 06:52:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:11017 Thu 13 May 2021 06:51:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3839 Thu 13 May 2021 06:47:49 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8536 Thu 13 May 2021 06:43:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8539 Thu 13 May 2021 06:35:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8546 Thu 13 May 2021 06:25:22 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10787 Thu 13 May 2021 06:25:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:1625 Thu 13 May 2021 06:20:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:1418 Thu 13 May 2021 06:17:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3015 Thu 13 May 2021 06:12:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2938 Thu 13 May 2021 06:07:27 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5112 1800mm). The musculoskeletal responses indicated that Tall subjects were forced to adopt the most awkward general body postures as a result of the low computer screen. However, the low screen allowed for the Short subjects to adopt the most natural general body postures, although levels of muscular activity in the upper trapezius suggest that the muscular load imposed on both Short and Tall subjects was significantly greater than that imposed on the Medium subjects. In addition, the Medium subjects’ perceptions of the Standard workstation dimensions support the fact that this workstation was better suited to users with “average” morphologies. The responses elicited in the Personalised and Wrist Support workstations were improved significantly when compared to the Standard workstation. Joint angles were more natural, upper trapezius EMG was reduced, standard of performance improved and perceptual responses indicated a diminished incidence of body and visual discomfort, as well as greater perceived satisfaction with these workstation dimensions. The improved physical responses suggest a decrease in the risk of developing cumulative trauma disorders. Although subjects were unaccustomed to the wrist support device, this workstation demonstrated a further reduction in the range of wrist angles, as well as a general positive attitude towards the concept.]]> Thu 13 May 2021 05:56:42 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9631 Thu 13 May 2021 05:54:26 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9842 Thu 13 May 2021 05:53:05 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10158 Thu 13 May 2021 05:44:49 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10166 Thu 13 May 2021 05:42:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9376 Thu 13 May 2021 05:41:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9490 Thu 13 May 2021 05:25:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9740 Thu 13 May 2021 05:16:20 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10939 Thu 13 May 2021 05:11:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8542 Thu 13 May 2021 05:06:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4068 Thu 13 May 2021 04:58:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:4746 Thu 13 May 2021 04:56:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9263 Thu 13 May 2021 04:51:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3518 Thu 13 May 2021 04:42:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3142 Thu 13 May 2021 04:39:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3869 Thu 13 May 2021 04:37:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:2841 Thu 13 May 2021 04:33:05 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10924 Thu 13 May 2021 04:29:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:1926 Thu 13 May 2021 04:28:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:5913 0.05). The multivariate analysis identified two interacting mechanisms controlling the distribution patterns, abundance and biomass of the various euphausiid species, namely (1) diel changes in abundance and biomass, (2) and restricted distribution patterns associated with the different water masses. Ingestion rates were determined for five euphausiid species. E. triacantha was found to have the highest daily ingestion rate ranging from 1 226.1 to 6 029.1 ng pigm ind⁻¹d⁻¹, while the lowest daily ingestion rates were observed in the juvenile Thysanoessa species (6.4 to 943.0 ng pigm ind⁻¹ d⁻¹). The total grazing impact of the selected euphausiids ranged from < 0.1 to 20.1 μg pigm m⁻²d⁻¹, corresponding to < 0.15 % of the areal chl-a biomass. The daily ration estimates of autotrophic carbon for the euphausiids suggested that phytoplankton represented a minor component in their diets, with only the sub-adult E. vallentini consuming sufficient phytoplankton to meet their daily carbon requirements. A cyclonic cold-core eddy spawned from the region of the APF located in the southwest Indian sector of the PFZ was the dominant feature during the 2005 survey. The total areal chl-a biomass throughout the region was low, ranging between 5.6 and 11.4 mg chl-a m⁻², and was significantly higher within the core of the eddy compared to the surrounding waters (p < 0.05). RMT-8 and WP-2 total euphausiid abundance and biomass estimates were high, and ranged from 0.004 to 0.36 ind m⁻³ and 0.065 to 1.21 mg dwt m⁻³, and from 0.01 to 18.2 ind m⁻³ and 0.01 to 15.7 mg dwt m⁻³, respectively. A distinct spatial pattern in the euphausiid community was evident with the Antarctic species, Euphausia frigida, E. triacantha and E. superba predominating within the core of the eddy, while the PFZ waters were characterized by the sub-Antarctic species, E. longirostris, Stylocheiron maximum, Nematoscelis megalops and Thysanoessa gregaria. The eddy edge acted as a transition zone where species from both regions co-occurred. Within the survey area the combined ingestion rate of the six numerically dominant euphausiid species ranged between 0.02 and 5.31 μg pigm m⁻²d¹, which corresponded to a loss of between < 0.001 and 0.11 % of the available chl-a biomass. E. triacantha and juvenile T. macura were identified as the dominant grazers. There was no apparent spatial pattern in the grazing activity of the euphausiids within the region of investigation. The average daily rations of the euphausiids examined were < 2 % of their body carbon. The low daily ration of the euphausiids could be ascribed to the predominance of small picophytoplankton in the region of investigation, which are too small to be grazed efficiently by larger zooplankton. The marked spatial patterns in species composition and the elevated abundance and biomass of euphausiids, suggest that the mesoscale eddies contribute to the spatial and temporal heterogeneity of the planktonic community of the PFZ and may represent important foraging regions for many of the apex predators within the region.]]> Thu 13 May 2021 04:21:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3491 Thu 13 May 2021 04:19:03 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:3163 Thu 13 May 2021 04:18:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10513 Thu 13 May 2021 04:13:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9841 Thu 13 May 2021 04:06:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8597 Thu 13 May 2021 03:58:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10764 Thu 13 May 2021 03:57:57 SAST ]]> 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