http://vital.seals.ac.za:8080/vital/access/manager/Index en-us 5 http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3024 Wed 12 Oct 2022 10:10:04 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4440 Wed 12 May 2021 23:34:27 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2587 Wed 12 May 2021 23:06:18 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4085 Wed 12 May 2021 20:21:15 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2942 Wed 12 May 2021 20:07:37 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:877 Wed 12 May 2021 20:03:08 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2595 Wed 12 May 2021 19:54:50 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5118 Wed 12 May 2021 19:45:01 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:21028 Wed 12 May 2021 19:36:12 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3456 Wed 12 May 2021 19:17:42 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3759 Wed 12 May 2021 19:03:28 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5404 Wed 12 May 2021 18:57:22 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1700 Wed 12 May 2021 18:56:53 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5805 Wed 12 May 2021 18:53:48 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3976 Wed 12 May 2021 18:46:00 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1185 Wed 12 May 2021 18:36:05 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2719 Wed 12 May 2021 18:30:57 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4092 Wed 12 May 2021 18:30:08 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4078 Wed 12 May 2021 18:28:46 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3453 Wed 12 May 2021 18:20:40 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5755 Wed 12 May 2021 18:13:50 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5561 Wed 12 May 2021 18:11:32 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2158 Wed 12 May 2021 18:05:58 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5506 Wed 12 May 2021 17:56:29 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4222 Wed 12 May 2021 17:42:24 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5128 Wed 12 May 2021 17:30:14 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2189 Wed 12 May 2021 17:21:49 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4771 Wed 12 May 2021 17:08:21 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4082 Wed 12 May 2021 16:43:32 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4080 Wed 12 May 2021 16:35:29 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4625 Wed 12 May 2021 16:30:45 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2395 Wed 12 May 2021 16:30:11 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3894 Wed 12 May 2021 16:06:52 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3578 Wed 12 May 2021 15:53:31 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4248 Wed 07 Jul 2021 14:02:53 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3397 Thu 13 May 2021 16:40:34 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4553 600 nm) in dimethylsulphoxide solution. All the ligands were transformed into the dihydroxy silicon octaphenoxyphthalocyanine with varying degrees of phototransformation quantum yields ranging in order from 10⁻³ to 10⁻⁵ depending on the axial ligand involved. During and after axial ligand transformations a photodegredation of the dihydroxy silicon octaphenoxy phthalocyanine was observed upon continued irradiation. The oligomers were found to undergo the same axial ligand transformation process with a phototransformation quantum yield of 10⁻⁵ The singlet oxygen quantum yields of the unaggregated monomeric silicon octaphenoxy phthalocyanines were all found to be approximately 0.2 with the exception of a compound with two (trihexyl)siloxy axial substituents that had a singlet oxygen quantum yield of approximately 0.4 in dimethylsulphoxide solutions. The oligomers showed a surprising trend of an increase in singlet oxygen quantum yield with an increase in phthalocyanine ring number up to the pentamer and then a dramatic decrease to the nonamer. The triplet quantum yield and triplet lifetime were determined by laser flash photolysis for selected compounds and no correlation was observed with any of these properties and the singlet oxygen quantum yields. These selected compounds all fluoresce and a very good correlation was found between the fluorescence lifetimes determined experimentally by laser photolysis and the Strickler-Berg equation for the non-aggregated compounds. Electrochemical measurements also indicate the importance of the axial ligands upon the behaviour of the phthalocyanines as cyclic voltammetric behaviour was determined by the nature of the axial ligand.]]> Thu 13 May 2021 14:52:35 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1442 Thu 13 May 2021 13:14:16 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5253 Thu 13 May 2021 10:49:07 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1914 Thu 13 May 2021 08:09:25 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3109 Thu 13 May 2021 07:39:05 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3001 Thu 13 May 2021 07:28:43 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1563 Thu 13 May 2021 07:23:38 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2156 Thu 13 May 2021 07:16:39 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3919 Thu 13 May 2021 07:05:18 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3764 Thu 13 May 2021 06:45:58 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4554 SnPc>ZnPc. Triplet lifetimes of the GePc (168-340μs) are very similar to that of the ZnPc (197 - 366μs), but the triplet lifetimes of the SnPc are ten fold shorter (10 - 32μs ). Triplet quantum yields are higher for the GePc (0.20 - 0.50) and SnPc (0.08 - 0.45) than for the ZnPc (0.02 - 0.25). Fluorescence lifetimes of GePc ( 4.0 - 5.1 ns) are significantly longer than that of ZnPc (1.9 - 3.0 ns) and SnPc (0.2 - 0.4 ns). Fluorescence quantum yields decrease in the following order: GePc(0.21-0.31)>ZnPc(0.02-0.21)>SnPc(0.02- 0.06). Ring-substituted cobalt phthalocyanine complexes of the form CoPc(R)4 (R= NH2, N02, C(CH3)3, S03H and COOH) are compared for their catalytic activities towards the oxidation of cysteine. The potential for the electrocatalytic oxidation of cysteine is closely related to the Com/Co11 couple of the CoPc(R)4 complexes in acidic media and to the Con/Co1 couple in basic media. The catalytic current and the oxidation potential for cysteine are dependent on the pH of the solution, the potential becoming less positive and the currents increasing with increase in pH.]]> Thu 13 May 2021 06:41:11 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3152 Thu 13 May 2021 06:33:02 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4627 Thu 13 May 2021 06:32:06 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2190 Thu 13 May 2021 06:28:27 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4868 Thu 13 May 2021 06:04:09 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5401 Thu 13 May 2021 05:48:23 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3502 Thu 13 May 2021 05:46:34 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3684 Thu 13 May 2021 05:44:52 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2857 Thu 13 May 2021 05:39:23 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2191 Thu 13 May 2021 05:37:45 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5937 Thu 13 May 2021 05:33:32 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5405 Thu 13 May 2021 05:32:14 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:20973 Thu 13 May 2021 05:23:13 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3148 Thu 13 May 2021 05:05:28 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3917 Thu 13 May 2021 05:04:53 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3177 Thu 13 May 2021 04:44:56 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1791 Thu 13 May 2021 04:36:39 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3475 Thu 13 May 2021 04:35:15 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4079 Thu 13 May 2021 04:31:19 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5305 0.05) apparent nutrient (protein, fat, fiber, starch) digestibility. Using the above digestibility protocol amino acid availability of all plants ingredients currently used in the South African animal industry was evaluated for H. midae. Soybean meal (96.86 %) and lupins (96.51 %) presented the highest apparent mean amino acid availability of all plant protein ingredients evaluated with H. midae. Canola meal (94.21 %), faba beans (92.87 %) sunflower meal (92.77 %), peanut meal (87.39 %) and cottonseed meal (85.15 %) presented higher apparent mean amino acid availability values than fish meal (82.75 %). Apparent protein digestibility was highly correlated (r = 0.99) with mean apparent amino acid availability, while true amino acid availability was 1.88 % units higher than apparent amino acid availability for all ingredients tested. Predicted apparent protein digestibility in compound diets was within 1.1-6.5 % of determined values. Calcium phosphate mono dibasic presented the lowest (P < 0.05) dietary phosphorus leaching (51.51 % maximum) and highest apparent phosphorus digestibility (66.27 %) in comparison to other inorganic phosphorus sources. Based on the method of direct experimentation to determine the optimal dietary protein level using graded levels of dietary protein 28.1-35.9 % dietary protein from good quality sources is recommended for maximum growth of juvenile H. midae. This study provides a scientifically sound research tool including a faecal collection technique, suitable marker and assay technique that could be use in further studies to improve least-cost diet formulation for H. midae. Future nutritional studies in H. midae should primarily concentrate on reducing dietary nutrient leaching and improving the intake of nutrients in order to properly evaluate responses of this species to different dietary regimes.]]> Thu 13 May 2021 04:20:05 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2803 Thu 13 May 2021 04:17:12 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3360 Thu 13 May 2021 04:15:55 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4449 Thu 13 May 2021 04:08:44 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6058 Thu 13 May 2021 04:06:15 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4626 Thu 13 May 2021 04:05:20 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3347 Thu 13 May 2021 04:02:08 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3780 Thu 13 May 2021 04:00:04 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3398 Thu 13 May 2021 03:55:01 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5703 Thu 13 May 2021 03:25:08 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5343 Thu 13 May 2021 03:21:54 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2376 Thu 13 May 2021 03:21:41 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:713 Thu 13 May 2021 03:20:14 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3916 Thu 13 May 2021 03:16:52 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5953 Thu 13 May 2021 02:36:04 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3511 Thu 13 May 2021 02:23:17 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3918 Thu 13 May 2021 02:17:58 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3092 Thu 13 May 2021 02:16:56 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4434 Thu 13 May 2021 02:00:59 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3169 Thu 13 May 2021 02:00:04 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3447 Thu 13 May 2021 01:53:14 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5952 Thu 13 May 2021 01:34:30 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1058 Thu 13 May 2021 01:32:41 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4207 Thu 13 May 2021 01:26:22 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1662 Thu 13 May 2021 01:18:36 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1477 Thu 13 May 2021 01:16:39 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4685 Thu 13 May 2021 00:56:50 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5218 Thu 13 May 2021 00:48:32 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:3153 Thu 13 May 2021 00:43:39 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4056 Thu 13 May 2021 00:37:11 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:4435 Thu 13 May 2021 00:36:20 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2279 Thu 13 May 2021 00:15:52 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:8145 Thu 13 May 2021 00:12:04 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:1960 Thu 13 May 2021 00:04:06 SAST ]]> http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:2865 Thu 01 Feb 2024 09:45:35 SAST ]]>