				AD Scientific Index - 2021				H INDEX			i10 INDEX			CITATION
University	Country	Region	World	Name	Country	University	Subject	Total	Last 5 year	Last 5 year / total	Total	Last 5 year	Last 5 year / total	Total	Last 5 year	Last 5 year / total
1	1	1	102	Rajaí¢ Cherkaoui El Moursli		Université Mohammed V de Rabat	Natural Sciences / Physics Nuclear Physics\|Medical Physics\|High Energy Physics\|	205	170	0.829	866	785	0.906	198302	131294	0.662
2	2	2	124	Farida Fassi		Université Mohammed V de Rabat	Natural Sciences / Physics High Energy Physics\|Astronomy\|Engineering\|Grid Computing\|	199	164	0.824	774	730	0.943	218203	141747	0.650
1	1	3	231	Sahal Yacoob		University of Cape Town	Natural Sciences / Physics High Energy Particle Physics\|	184	141	0.766	898	738	0.822	174820	102203	0.585
1	1	4	477	Shaaban Khalil		Zewail City of Science and Technology	Natural Sciences / Physics High Energy Physics\|	165	140	0.848	765	653	0.854	140043	95696	0.683
2	2	5	609	Ahmed Ali Abdelalim		Zewail City of Science and Technology	Natural Sciences / Physics Physics and Astronomy\|	156	123	0.788	454	417	0.919	150113	87633	0.584
2	2	6	811	Dan J Stein		University of Cape Town	Medical and Health Sciences / Psychiatry Anxiety disorders\|Psychiatry in Africa\|	145	94	0.648	910	759	0.834	89830	50427	0.561
1	3	7	999	Mohammed Attia Mahmoud		Fayoum University	Natural Sciences / Physics High Energy Physics\|	137	114	0.832	379	357	0.942	109214	70173	0.643
1	3	8	1116	Loan Truong		University of Johannesburg	Natural Sciences / Physics HEP\|LHC\|ATLAS\|	134	133	0.993	490	490	1.000	69832	66048	0.946
1	4	9	1365	David M. Richardson		Stellenbosch University	Natural Sciences / Biological Science invasion ecology\|invasion biology\|invasion science\|conservation biology\|biological invasions\|	128	94	0.734	438	380	0.868	71748	33754	0.470
3	5	10	2672	Jean Cleymans		University of Cape Town	Natural Sciences / Physics Physics\|Thermal Models\|particle Physics\|	110	94	0.855	392	300	0.765	56067	33806	0.603
1	6	11	2751	Bruce Mellado		University of the Witwatersrand	Natural Sciences / Physics Particle Physics\|	109	71	0.651	414	290	0.700	62616	30766	0.491
1	7	12	2769	Mike Wingfield		University of Pretoria	Agriculture & Forestry / Forestry forest protection\|mycology\|entomology\|biotechnology\|	109	68	0.624	900	626	0.696	56196	28043	0.499
1	8	13	2948	Richard M. Cowling		Nelson Mandela University	Natural Sciences / Biological Science Plant diversity and evolution\|palaeovegetation science\|conservation science\|	108	52	0.481	359	244	0.680	37747	11910	0.316
2	9	14	3627	Robert J Scholes		University of the Witwatersrand	Natural Sciences / Biological Science carbon cycle\|savannas\|earth observation\|biodiversity\|	102	66	0.647	273	191	0.700	70463	31177	0.442
4	10	15	3922	Dan Stein		University of Cape Town	Medical and Health Sciences / Psychiatry Anxiety Disorders\|Psychiatry research in Africa\|	101	45	0.446	115	103	0.896	29065	9258	0.319
5	11	16	4317	Eric Bateman		University of Cape Town	Medical and Health Sciences / Chest Diseases Respiratory medicine\|	98	65	0.663	293	224	0.765	52685	24301	0.461
6	12	17	4510	William Bond		University of Cape Town	Natural Sciences / Biological Science Ecology\|evolution\|	97	66	0.680	278	209	0.752	48636	22687	0.466
1	1	18	4650	Abdelouahed Tounsi		Djillali Liabes university of Sidi Bel Abbes	Natural Sciences / Mathematics Nanocomposites\|Mechanics of Nano-structures\|Composite structures\|Applied Mathematics\|Plates and Shells\|	97	90	0.928	324	289	0.892	29453	25283	0.858
3	13	19	4907	Zeblon Vilakazi		University of the Witwatersrand	Natural Sciences / Physics High Energy physics\|Grid Computing\|	95	91	0.958	265	248	0.936	46966	31873	0.679
2	14	20	5260	Josua Meyer *		University of Pretoria	Engineering & Technology / Mechanical Engineering Heat transfer\|	94	71	0.755	441	360	0.816	30631	18234	0.595
2	15	21	6402	Simon Connell		University of Johannesburg	Natural Sciences / Physics Nuclear Physics\|Particle Physics\|Diamond Physics\|Quantum Physics\|	89	84	0.944	227	169	0.744	42476	34505	0.812
1	16	22	6471	Fernando Albericio		University of Kwazulu Natal	Natural Sciences / Chemical Sciences medicinal chemistry\|peptides\|	89	52	0.584	584	331	0.567	34887	14415	0.413
7	17	23	6636	Karen Sliwa		University of Cape Town	Medical and Health Sciences / Cardiology cardiology\|heart failure\|Africa\|peripartum\|	88	75	0.852	252	224	0.889	80045	59481	0.743
1	18	24	6782	Christo Venter		North West University	Engineering & Technology / Civil Engineering Pulsars\|gamma-ray astronomy\|globular clusters\|cosmic rays\|	88	54	0.614	208	190	0.913	31939	12619	0.395
1	4	25	6814	Ahmed M Hamed		American University in Cairo	Natural Sciences / Physics â€¦ High Energy Nuclear and Particle Physics\|Cosmology\|Nano-Physics\|General Relativity\|Computational Physics\|	88	59	0.670	212	195	0.920	30433	13006	0.427
8	19	26	7275	Bongani M Mayosi		University of Cape Town	Medical and Health Sciences / Medicine Medicine\|	86	69	0.802	277	229	0.827	85640	66187	0.773
2	20	27	7572	Robin M Warren		Stellenbosch University	Medical and Health Sciences / Infectious Diseases Tuberculosis\|	86	57	0.663	305	238	0.780	25563	12109	0.474
1	5	28	8052	Ms El Naschie		Alexandria University	Engineering & Technology / Civil Engineering Structural Egeneering\|EM-DRIVE\|Nano-Tech Casimir Reactors\|â€¦ Physics and Cosmology-Dark Energy-Deter\|	84	40	0.476	804	283	0.352	38114	10704	0.281
9	21	29	8187	Keertan Dheda		University of Cape Town	Medical and Health Sciences / Chest Diseases pulmonary infections\|tuberculosis\|diseases of poverty\|	84	59	0.702	249	226	0.908	27775	15515	0.559
10	22	30	8390	George Fr Ellis		University of Cape Town	Natural Sciences / Mathematics Relativity\|cosmology\|complexity\|	83	43	0.518	278	148	0.532	40306	10601	0.263
4	23	31	8420	Nukri Komin		University of the Witwatersrand	Natural Sciences / Physics gamma-ray astronomy\|Cosmic Rays\|	83	51	0.614	181	163	0.901	34985	14338	0.410
1	3	32	8960	Belkheir Hammouti		Université Mohammed Premier Oujda	Natural Sciences / Chemical Sciences Chemistry & Environment & Electrochemistry\|	82	56	0.683	456	363	0.796	24714	13824	0.559
1	24	33	9413	Roy Maartens		University of the Western Cape	Natural Sciences / Physics Physics\|	81	45	0.556	224	152	0.679	22273	7804	0.350
2	25	34	9416	Eno E. Ebenso		North West University	Natural Sciences / Chemical Sciences corrosion\|corrosion inhibition\|corrosion of metals\|adsorption\|quantum chemical calculations\|	81	68	0.840	339	311	0.917	22164	15331	0.692
11	26	35	9517	Th Jarrett		University of Cape Town	Engineering & Technology / Meteorology & Atmospheric Sciences astronomy and astrophysics\|	80	53	0.663	211	162	0.768	43411	20068	0.462
1	6	36	9967	Ayman Mahrous		Egypt Japan University of Science & Technology	Natural Sciences / Physics Space weather\|ionosphere\|cosmic rays\|solar physics\|particle physics\|	79	75	0.949	170	158	0.929	42664	29448	0.690
12	27	37	10206	Estelle Lambert		University of Cape Town	Medical and Health Sciences / Epidemiology and Public Health physical activity and public health\|non-communicable diseases\|health behavior change\|global south and healthy cities\|obesity\|	79	55	0.696	268	215	0.802	25051	14920	0.596
2	7	38	10407	Elsayed Z Soliman		American University in Cairo	Medical and Health Sciences / Cardiology Electrocardiography\|Atrial fibrillation\|Preventive cardiology\|Cardiovascular epidemiology\|Global health\|	78	68	0.872	378	356	0.942	98316	60317	0.614
2	28	39	10543	Salim S. Abdool Karim		University of Kwazulu Natal	Medical and Health Sciences / Epidemiology and Public Health HIV Prevention and Treatment\|	78	61	0.782	325	223	0.686	30902	14309	0.463
1	29	40	10598	Tebello Nyokong		Rhodes University	Natural Sciences / Chemical Sciences Photophysics\|	78	40	0.513	571	399	0.699	27325	12302	0.450
13	30	41	11179	Landon Myer		University of Cape Town	Medical and Health Sciences / Family Medicine epidemiology\|biostatistics\|HIV\|maternal & child health\|women's health\|	77	55	0.714	305	254	0.833	23902	11576	0.484
14	31	42	12311	Lucy Gilson		University of Cape Town	Medical and Health Sciences / Epidemiology and Public Health	75	52	0.693	204	148	0.725	21552	9366	0.435
15	32	43	12623	Heather Zar		University of Cape Town	Medical and Health Sciences / Pediatrics and Child Health	74	56	0.757	266	222	0.835	33726	17832	0.529
2	33	44	12783	Mattia Vaccari		University of the Western Cape	Natural Sciences / Physics Astrophysics\|Observational Optical/Infrared/Radio Galaxy â€¦\|Cloud Computing\|Machine Learning\|Statistics\|	74	51	0.689	176	152	0.864	23490	13382	0.570
3	34	45	13018	Steven D. Johnson		University of Kwazulu Natal	Agriculture & Forestry / Plant Science Evolutionary biology\|pollination biology\|plant reproduction\|chemical ecology\|invasion biology\|	74	47	0.635	273	214	0.784	19177	8482	0.442
5	35	46	13252	Linda Richter		University of the Witwatersrand	Medical and Health Sciences / Epidemiology and Public Health child development\|adolescent development\|HIV\|AIDS\|public health\|	73	52	0.712	286	191	0.668	29211	16179	0.554
3	36	47	13666	Markus Boettcher		North West University	Engineering & Technology / Meteorology & Atmospheric Sciences Astrophysics\|	73	46	0.630	252	198	0.786	17660	9212	0.522
16	37	48	13695	Graeme Meintjes		University of Cape Town	Medical and Health Sciences / Infectious Diseases HIV\|Tuberculosis\|Cryptococcosis\|Immune Reconstitution Inflammatory â€¦\|	73	58	0.795	227	192	0.846	16707	10236	0.613
3	38	49	13697	Gerard Tromp		Stellenbosch University	Engineering & Technology / Computer Science Bioinformatics\|statistics\|	73	44	0.603	201	124	0.617	16620	6941	0.418
4	39	50	14166	Brian W. Van Wilgen		Stellenbosch University	Natural Sciences / Biological Science Applied ecology\|fire ecology\|invasion ecology\|ecosystem management\|	72	50	0.694	194	150	0.773	19146	7935	0.414