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150 results on '"Dlamini, M."'

1. First Measurement of the EMC effect in B10 and B11

Author

Karki, A, Biswas, D, Gonzalez, FA, Henry, W, Morean, C, Nadeeshani, A, Sun, A, Abrams, D, Ahmed, Z, Aljawrneh, B, Alsalmi, S, Ambrose, R, Androic, D, Armstrong, W, Arrington, J, Asaturyan, A, Assumin-Gyimah, K, Gayoso, C Ayerbe, Bandari, A, Bane, J, Barrow, J, Basnet, S, Berdnikov, V, Bhatt, H, Bhetuwal, D, Boeglin, WU, Bosted, P, Brash, E, Bukhari, MHS, Chen, H, Chen, JP, Chen, M, Christy, ME, Covrig, S, Craycraft, K, Danagoulian, S, Day, D, Diefenthaler, M, Dlamini, M, Dunne, J, Duran, B, Dutta, D, Elliott, C, Ent, R, Fenker, H, Fomin, N, Fuchey, E, Gaskell, D, Gautam, TN, Hansen, JO, Hauenstein, F, Hernandez, AV, Horn, T, Huber, GM, Jones, MK, Joosten, S, Kabir, ML, Kalantarians, N, Keppel, C, Khanal, A, King, PM, Kinney, E, Ko, HS, Kohl, M, Lashley-Colthirst, N, Li, S, Li, WB, Liyanage, AH, Mack, D, Malace, S, Markowitz, P, Matter, J, Meekins, D, Michaels, R, Mkrtchyan, A, Mkrtchyan, H, Nanda, S, Nguyen, D, Niculescu, G, Niculescu, I, Nuruzzaman, Pandey, B, Park, S, Pooser, E, Puckett, AJR, Rehfuss, M, Reinhold, J, Santiesteban, N, Sawatzky, B, Smith, GR, Szumila-Vance, H, Tadepalli, AS, Tadevosyan, V, Trotta, R, Wood, SA, Yero, C, and Zhang, J

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Nuclear and plasma physics
Abstract

The nuclear dependence of the inclusive inelastic electron scattering cross section (the EMC effect) has been measured for the first time in B10 and B11. Previous measurements of the EMC effect in A≤12 nuclei showed an unexpected nuclear dependence; B10 and B11 were measured to explore the EMC effect in this region in more detail. Results are presented for Be9, B10, B11, and C12 at an incident beam energy of 10.6 GeV. The EMC effect in the boron isotopes was found to be similar to that for Be9 and C12, yielding almost no nuclear dependence in the EMC effect in the range A=4-12. This represents important new data supporting the hypothesis that the EMC effect depends primarily on the local nuclear environment due to the cluster structure of these nuclei.

Published
2023

2. First Measurement of the EMC Effect in $^{10}$B and $^{11}$B

Author

Karki, A., Biswas, D., Gonzalez, F. A., Henry, W., Morean, C., Nadeeshani, A., Sun, A., Abrams, D., Ahmed, Z., Aljawrneh, B., Alsalmi, S., Ambrose, R., Androic, D., Armstrong, W., Arrington, J., Asaturyan, A., Assumin-Gyimah, K., Gayoso, C. Ayerbe, Bandari, A., Bane, J., Barrow, J., Basnet, S., Berdnikov, V., Bhatt, H., Bhetuwal, D., Boeglin, W. U., Bosted, P., Brash, E., Bukhari, M. H. S., Chen, H., Chen, J. P., Chen, M., Christy, M. E., Covrig, S., Craycraft, K., Danagoulian, S., Day, D., Diefenthaler, M., Dlamini, M., Dunne, J., Duran, B., Dutta, D., Elliott, C., Ent, R., Fenker, H., Fomin, N., Fuchey, E., Gaskell, D., Gautam, T. N., Hansen, J. O., Hauenstein, F., Hernandez, A. V., Horn, T., Huber, G. M., Jones, M. K., Joosten, S., Kabir, M. L., Kalantarians, N., Keppel, C., Khanal, A., King, P. M., Kinney, E., Ko, H. S., Kohl, M., Lashley-Colthirst, N., Li, S., Li, W. B., Liyanage, A. H., Mack, D., Malace, S., Markowitz, P., Matter, J., Meekins, D., Michaels, R., Mkrtchyan, A., Mkrtchyan, H., Nanda, S., Nguyen, D., Niculescu, G., Niculescu, I., Nuruzzaman, Pandey, B., Park, S., Pooser, E., Puckett, A. J. R., Rehfuss, M., Reinhold, J., Santiesteban, N., Sawatzky, B., Smith, G. R., Szumila-Vance, H., Tadepalli, A. S., Tadevosyan, V., Trotta, R., Wood, S. A., Yero, C., and Zhang, J.

Subjects
Nuclear Experiment
Abstract

The nuclear dependence of the inclusive inelastic electron scattering cross section (the EMC effect) has been measured for the first time in $^{10}$B and $^{11}$B. Previous measurements of the EMC effect in $A \leq 12$ nuclei showed an unexpected nuclear dependence; $^{10}$B and $^{11}$B were measured to explore the EMC effect in this region in more detail. Results are presented for $^9$Be, $^{10}$B, $^{11}$B, and $^{12}$C at an incident beam energy of 10.6~GeV. The EMC effect in the boron isotopes was found to be similar to that for $^9$Be and $^{12}$C, yielding almost no nuclear dependence in the EMC effect in the range $A=4-12$. This represents important, new data supporting the hypothesis that the EMC effect depends primarily on the local nuclear environment due to the cluster structure of these nuclei., Comment: To appear in PRC

Published
2022

3. Constraints on the onset of color transparency from quasi-elastic $^{12}$C$(e,e'p)$ up to $Q^2=\,14.2\,$(GeV$/c)^2$

Author

Bhetuwal, D., Matter, J., Szumila-Vance, H., Gayoso, C. Ayerbe, Kabir, M. L., Dutta, D., Ent, R., Abrams, D., Ahmed, Z., Aljawrneh, B., Alsalmi, S., Ambrose, R., Androic, D., Armstrong, W., Asaturyan, A., Assumin-Gyimah, K., Bandari, A., Basnet, S., Berdnikov, V., Bhatt, H., Biswas, D., Boeglin, W. U., Bosted, P., Brash, E., Bukhari, M. H. S., Chen, H., Chen, J. P., Chen, M., Christy, E. M., Covrig, S., Craycraft, K., Danagoulian, S., Day, D., Diefenthaler, M., Dlamini, M., Dunne, J., Duran, B., Evans, R., Fenker, H., Fomin, N., Fuchey, E., Gaskell, D., Gautam, T. N., Gonzalez, F. A., Hansen, J. O., Hauenstein, F., Hernandez, A. V., Horn, T., Huber, G. M., Jones, M. K., Joosten, S., Karki, A., Keppel, C., Khanal, A., King, P. M., Kinney, E., Ko, H. S., Kohl, M., Lashley-Colthirst, N., Li, S., Li, W. B., Liyanage, A. H., Mack, D., Malace, S., Markowitz, P., Meekins, D., Michaels, R., Mkrtchyan, A., Mkrtchyan, H., Nazeer, S. J., Nanda, S., Niculescu, G., Niculescu, I., Nguyen, D., Nuruzzaman, Pandey, B., Park, S., Pooser, E., Puckett, A., Rehfuss, M., Reinhold, J., Santiesteban, N., Sawatzky, B., Smith, G. R., Sun, A., Tadevosyan, V., Trotta, R., Wood, S. A., Yero, C., and Zhang, J.

Subjects
Nuclear Experiment
Abstract

Quasi-elastic scattering on $^{12}$C$(e,e'p)$ was measured in Hall C at Jefferson Lab for space-like 4-momentum transfer squared $Q^2$ in the range of 8--14.2\,(GeV/$c$)$^2$ with proton momenta up to 8.3\,GeV/$c$. The experiment was carried out in the upgraded Hall C at Jefferson Lab. It used the existing high momentum spectrometer and the new super high momentum spectrometer to detect the scattered electrons and protons in coincidence. The nuclear transparency was extracted as the ratio of the measured yield to the yield calculated in the plane wave impulse approximation. Additionally, the transparency of the $1s_{1/2}$ and $1p_{3/2}$ shell protons in $^{12}$C was extracted, and the asymmetry of the missing momentum distribution was examined for hints of the quantum chromodynamics prediction of Color Transparency. All of these results were found to be consistent with traditional nuclear physics and inconsistent with the onset of Color Transparency.

Published
2022
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4. Deeply virtual Compton scattering cross section at high Bjorken $x_B$

Author

Georges, F., Rashad, M. N. H., Stefanko, A., Dlamini, M., Karki, B., Ali, S. F., Lin, P-J., Ko, H-S, Israel, N., Adikaram, D., Ahmed, Z., Albataineh, H., Aljawrneh, B., Allada, K., Allison, S., Alsalmi, S., Androic, D., Aniol, K., Annand, J., Atac, H., Averett, T., Gayoso, C. Ayerbe, Bai, X., Bane, J., Barcus, S., Bartlett, K., Bellini, V., Beminiwattha, R., Bericic, J., Biswas, D., Brash, E., Bulumulla, D., Campbell, J., Camsonne, A., Carmignotto, M., Castellano, J., Chen, C., Chen, J-P., Chetry, T., Christy, M. E., Cisbani, E., Clary, B., Cohen, E., Compton, N., Cornejo, J. C., Dusa, S. Covrig, Crowe, B., Danagoulian, S., Danley, T., De Persio, F., Deconinck, W., Defurne, M., Desnault, C., Di, D., Duer, M., Duran, B., Ent, R., Fanelli, C., Franklin, G., Fuchey, E., Gal, C., Gaskell, D., Gautam, T., Glamazdin, O., Gnanvo, K., Gray, V. M., Gu, C., Hague, T., Hamad, G., Hamilton, D., Hamilton, K., Hansen, O., Hauenstein, F., Henry, W., Higinbotham, D. W., Holmstrom, T., Horn, T., Huang, Y., Huber, G. M., Hyde, C., Ibrahim, H., Jen, C-M., Jin, K., Jones, M., Kabir, A., Keppel, C., Khachatryan, V., King, P. M., Li, S., Li, W. B., Liu, J., Liu, H., Liyanage, A., Magee, J., Malace, S., Mammei, J., Markowitz, P., McClellan, E., Mazouz, M., Meddi, F., Meekins, D., Mesik, K., Michaels, R., Mkrtchyan, A., Montgomery, R., Camacho, C. Muñoz, Myers, L. S., Nadel-Turonski, P., Nazeer, S. J., Nelyubin, V., Nguyen, D., Nuruzzaman, N., Nycz, M., Obretch, O. F., Ou, L., Palatchi, C., Pandey, B., Park, S., Park, K., Peng, C., Pomatsalyuk, R., Pooser, E., Puckett, A. J. R., Punjabi, V., Quinn, B., Rahman, S., Reimer, P. E., Roche, J., Sapkota, I., Sarty, A., Sawatzky, B., Saylor, N. H., Schmookler, B., Shabestari, M. H., Shahinyan, A., Sirca, S., Smith, G. R., Sooriyaarachchilage, S., Sparveris, N., Spies, R., Su, T., Subedi, A., Sulkosky, V., Sun, A., Thorne, L., Tian, Y., Ton, N., Tortorici, F., Trotta, R., Urciuoli, G. M., Voutier, E., Waidyawansa, B., Wang, Y., Wojtsekhowski, B., Wood, S., Yan, X., Ye, L., Ye, Z., Yero, C., Zhang, J., Zhao, Y., and Zhu, P.

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment, Nuclear Experiment
Abstract

We report high-precision measurements of the Deeply Virtual Compton Scattering (DVCS) cross section at high values of the Bjorken variable $x_B$. DVCS is sensitive to the Generalized Parton Distributions of the nucleon, which provide a three-dimensional description of its internal constituents. Using the exact analytic expression of the DVCS cross section for all possible polarization states of the initial and final electron and nucleon, and final state photon, we present the first experimental extraction of all four helicity-conserving Compton Form Factors (CFFs) of the nucleon as a function of $x_B$, while systematically including helicity flip amplitudes. In particular, the high accuracy of the present data demonstrates sensitivity to some very poorly known CFFs.

Published
2022
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5. Deeply Virtual Compton Scattering Cross Section at High Bjorken x_{B}.

Author

Georges, F, Rashad, MNH, Stefanko, A, Dlamini, M, Karki, B, Ali, SF, Lin, P-J, Ko, H-S, Israel, N, Adikaram, D, Ahmed, Z, Albataineh, H, Aljawrneh, B, Allada, K, Allison, S, Alsalmi, S, Androic, D, Aniol, K, Annand, J, Atac, H, Averett, T, Ayerbe Gayoso, C, Bai, X, Bane, J, Barcus, S, Bartlett, K, Bellini, V, Beminiwattha, R, Bericic, J, Biswas, D, Brash, E, Bulumulla, D, Campbell, J, Camsonne, A, Carmignotto, M, Castellano, J, Chen, C, Chen, J-P, Chetry, T, Christy, ME, Cisbani, E, Clary, B, Cohen, E, Compton, N, Cornejo, JC, Covrig Dusa, S, Crowe, B, Danagoulian, S, Danley, T, De Persio, F, Deconinck, W, Defurne, M, Desnault, C, Di, D, Duer, M, Duran, B, Ent, R, Fanelli, C, Franklin, G, Fuchey, E, Gal, C, Gaskell, D, Gautam, T, Glamazdin, O, Gnanvo, K, Gray, VM, Gu, C, Hague, T, Hamad, G, Hamilton, D, Hamilton, K, Hansen, O, Hauenstein, F, Henry, W, Higinbotham, DW, Holmstrom, T, Horn, T, Huang, Y, Huber, GM, Hyde, CE, Ibrahim, H, Jen, C-M, Jin, K, Jones, M, Kabir, A, Keppel, C, Khachatryan, V, King, PM, Li, S, Li, WB, Liu, J, Liu, H, Liyanage, A, Magee, J, Malace, S, Mammei, J, Markowitz, P, McClellan, E, Mazouz, M, and Meddi, F

Subjects
Jefferson Lab Hall A Collaboration, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We report high-precision measurements of the deeply virtual Compton scattering (DVCS) cross section at high values of the Bjorken variable x_{B}. DVCS is sensitive to the generalized parton distributions of the nucleon, which provide a three-dimensional description of its internal constituents. Using the exact analytic expression of the DVCS cross section for all possible polarization states of the initial and final electron and nucleon, and final state photon, we present the first experimental extraction of all four helicity-conserving Compton form factors (CFFs) of the nucleon as a function of x_{B}, while systematically including helicity flip amplitudes. In particular, the high accuracy of the present data demonstrates sensitivity to some very poorly known CFFs.

Published
2022

6. Form Factors and Two-Photon Exchange in High-Energy Elastic Electron-Proton Scattering

Author

Christy, ME, Gautam, T, Ou, L, Schmookler, B, Wang, Y, Adikaram, D, Ahmed, Z, Albataineh, H, Ali, SF, Aljawrneh, B, Allada, K, Allison, SL, Alsalmi, S, Androic, D, Aniol, K, Annand, J, Arrington, J, Atac, H, Averett, T, Gayoso, C Ayerbe, Bai, X, Bane, J, Barcus, S, Bartlett, K, Bellini, V, Beminiwattha, R, Bericic, J, Bhatt, H, Bhetuwal, D, Biswas, D, Brash, E, Bulumulla, D, Camacho, CM, Campbell, J, Camsonne, A, Carmignotto, M, Castellanos, J, Chen, C, Chen, J-P, Chetry, T, Cisbani, E, Clary, B, Cohen, E, Compton, N, Cornejo, JC, Dusa, S Covrig, Crowe, B, Danagoulian, S, Danley, T, Deconinck, W, Defurne, M, Desnault, C, Di, D, Dlamini, M, Duer, M, Duran, B, Ent, R, Fanelli, C, Fuchey, E, Gal, C, Gaskell, D, Georges, F, Gilad, S, Glamazdin, O, Gnanvo, K, Gramolin, AV, Gray, VM, Gu, C, Habarakada, A, Hague, T, Hamad, G, Hamilton, D, Hamilton, K, Hansen, O, Hauenstein, F, Hernandez, AV, Henry, W, Higinbotham, DW, Holmstrom, T, Horn, T, Huang, Y, Huber, GM, Hyde, C, Ibrahim, H, Israel, N, Jen, C-M, Jin, K, Jones, M, Kabir, A, Karki, B, Keppel, C, Khachatryan, V, King, PM, Li, S, Li, W, Liu, H, Liu, J, Liyanage, AH, Mack, D, and Magee, J

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

We present new precision measurements of the elastic electron-proton scattering cross section for momentum transfer (Q^{2}) up to 15.75  (GeV/c)^{2}. Combined with existing data, these provide an improved extraction of the proton magnetic form factor at high Q^{2} and double the range over which a longitudinal or transverse separation of the cross section can be performed. The difference between our results and polarization data agrees with that observed at lower Q^{2} and attributed to hard two-photon exchange (TPE) effects, extending to 8  (GeV/c)^{2} the range of Q^{2} for which a discrepancy is established at >95% confidence. We use the discrepancy to quantify the size of TPE contributions needed to explain the cross section at high Q^{2}.

Published
2022

7. Form Factors and Two-Photon Exchange in High-Energy Elastic Electron-Proton Scattering

Author

Christy, M. E., Gautam, T., Ou, L., Schmookler, B., Wang, Y., Adikaram, D., Ahmed, Z., Albataineh, H., Ali, S. F., Aljawrneh, B., Allada, K., Allison, S. L., Alsalmi, S., Androic, D., Aniol, K., Annand, J., Arrington, J., Atac, H., Averett, T., Gayoso, C. Ayerbe, Bai, X., Bane, J., Barcus, S., Bartlett, K., Bellini, V., Beminiwattha, R., Bericic, J., Bhatt, H., Bhetuwal, D., Biswas, D., Brash, E., Bulumulla, D., Camacho, C. M., Campbell, J., Camsonne, A., Carmignotto, M., Castellanos, J., Chen, C., Chen, J-P., Chetry, T., Cisbani, E., Clary, B., Cohen, E., Compton, N., Cornejo, J. C., Dusa, S. Covrig, Crowe, B., Danagoulian, S., Danley, T., Deconinck, W., Defurne, M., Desnault, C., Di, D., Dlamini, M., Duer, M., Duran, B., Ent, R., Fanelli, C., Fuchey, E., Gal, C., Gaskell, D., Georges, F., Gilad, S., Glamazdin, O., Gnanvo, K., Gramolin, A. V., Gray, V. M., Gu, C., Habarakada, A., Hague, T., Hamad, G., Hamilton, D., Hamilton, K., Hansen, O., Hauenstein, F., Hernandez, A. V., Henry, W., Higinbotham, D. W., Holmstrom, T., Horn, T., Huang, Y., Huber, G. M., Hyde, C., Ibrahim, H., Israel, N., Jen, C-M., Jin, K., Jones, M., Kabir, A., Karki, B., Keppel, C., Khachatryan, V., King, P. M., Li, S., Li, W., Liu, H., Liu, J., Liyanage, A. H., Mack, D., Magee, J., Malace, S., Mammei, J., Markowitz, P., Mayilyan, S., McClellan, E., Meddi, F., Meekins, D., Mesick, K., Michaels, R., Mkrtchyan, A., Moffit, B., Montgomery, R., Myers, L. S., Nadel-Turonski, P., Nazeer, S. J., Nelyubin, V., Nguyen, D., Nuruzzaman, N., Nycz, M., Obrecht, R. F., Ohanyan, K., Palatchi, C., Pandey, B., Park, K., Park, S., Peng, C., Persio, F. D., Pomatsalyuk, R., Pooser, E., Puckett, A. J. R., Punjabi, V., Quinn, B., Rahman, S., Rashad, M. N. H., Riordan, S., Roche, J., Sapkota, I., Sarty, A., Sawatzky, B., Saylor, N. H., Shabestari, M. H., Shahinyan, A., Sirca, S., Smith, G. R., Sooriyaarachchilage, S., Sparveris, N., Spies, R., Stefanko, A., Su, T., Subedi, A., Sulkosky, V., Sun, A., Tan, Y., Thorne, L., Ton, N., Tortorici, F., Trotta, R., Uniyal, R., Urciuoli, G. M., Voutier, E., Waidyawansa, B., Wojtsekhowski, B., Wood, S., Yan, X., Ye, L., Ye, Z. H., Yero, C., Zhang, J., Zhao, Y. X., and Zhu, P.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

We present new precision measurements of the elastic electron-proton scattering cross section for momentum transfer (Q$^2$) up to 15.75~\gevsq. Combined with existing data, these provide an improved extraction of the proton magnetic form factor at high Q$^2$ and double the range over which a longitudinal/transverse separation of the cross section can be performed. The difference between our results and polarization data agrees with that observed at lower Q$^2$ and attributed to hard two-photon exchange (TPE) effects, extending to 8~(GeV/c)$^2$ the range of Q$^2$ for which a discrepancy is established at $>$95\% confidence. We use the discrepancy to quantify the size of TPE contributions needed to explain the cross section at high Q$^2$., Comment: 7 pages, 2 figures

Published
2021
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8. Deep Exclusive Electroproduction of π0 at High Q2 in the Quark Valence Regime

Author

Dlamini, M, Karki, B, Ali, SF, Lin, P-J, Georges, F, Ko, H-S, Israel, N, Rashad, MNH, Stefanko, A, Adikaram, D, Ahmed, Z, Albataineh, H, Aljawrneh, B, Allada, K, Allison, S, Alsalmi, S, Androic, D, Aniol, K, Annand, J, Atac, H, Averett, T, Ayerbe Gayoso, C, Bai, X, Bane, J, Barcus, S, Bartlett, K, Bellini, V, Beminiwattha, R, Bericic, J, Biswas, D, Brash, E, Bulumulla, D, Campbell, J, Camsonne, A, Carmignotto, M, Castellano, J, Chen, C, Chen, J-P, Chetry, T, Christy, ME, Cisbani, E, Clary, B, Cohen, E, Compton, N, Cornejo, JC, Covrig Dusa, S, Crowe, B, Danagoulian, S, Danley, T, De Persio, F, Deconinck, W, Defurne, M, Desnault, C, Di, D, Duer, M, Duran, B, Ent, R, Fanelli, C, Franklin, G, Fuchey, E, Gal, C, Gaskell, D, Gautam, T, Glamazdin, O, Gnanvo, K, Gray, VM, Gu, C, Hague, T, Hamad, G, Hamilton, D, Hamilton, K, Hansen, O, Hauenstein, F, Henry, W, Higinbotham, DW, Holmstrom, T, Horn, T, Huang, Y, Huber, GM, Hyde, C, Ibrahim, H, Jen, C-M, Jin, K, Jones, M, Kabir, A, Keppel, C, Khachatryan, V, King, PM, Li, S, Li, W, Liu, J, Liu, H, Liyanage, A, Magee, J, Malace, S, Mammei, J, Markowitz, P, McClellan, E, Meddi, F, and Meekins, D

Subjects
Jefferson Lab Hall A Collaboration, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We report measurements of the exclusive neutral pion electroproduction cross section off protons at large values of x_{B} (0.36, 0.48, and 0.60) and Q^{2} (3.1 to 8.4  GeV^{2}) obtained from Jefferson Lab Hall A experiment E12-06-014. The corresponding structure functions dσ_{T}/dt+εdσ_{L}/dt, dσ_{TT}/dt, dσ_{LT}/dt, and dσ_{LT^{'}}/dt are extracted as a function of the proton momentum transfer t-t_{min}. The results suggest the amplitude for transversely polarized virtual photons continues to dominate the cross section throughout this kinematic range. The data are well described by calculations based on transversity generalized parton distributions coupled to a helicity flip distribution amplitude of the pion, thus providing a unique way to probe the structure of the nucleon.

Published
2021

9. Deep exclusive electroproduction of $\pi^0$ at high $Q^2$ in the quark valence regime

Author

The Jefferson Lab Hall A Collaboration, Dlamini, M., Karki, B., Ali, S. F., Lin, P-J., Georges, F., Ko, H-S, Israel, N., Rashad, M. N. H., Stefanko, A., Adikaram, D., Ahmed, Z., Albataineh, H., Aljawrneh, B., Allada, K., Allison, S., Alsalmi, S., Androic, D., Aniol, K., Annand, J., Atac, H., Averett, T., Gayoso, C. Ayerbe, Bai, X., Bane, J., Barcus, S., Bartlett, K., Bellini, V., Beminiwattha, R., Bericic, J., Biswas, D., Brash, E., Bulumulla, D., Campbell, J., Camsonne, A., Carmignotto, M., Castellano, J., Chen, C., Chen, J-P., Chetry, T., Christy, M. E., Cisbani, E., Clary, B., Cohen, E., Compton, N., Cornejo, J. C., Dusa, S. Covrig, Crowe, B., Danagoulian, S., Danley, T., De Persio, F., Deconinck, W., Defurne, M., Desnault, C., Di, D., Duer, M., Duran, B., Ent, R., Fanelli, C., Franklin, G., Fuchey, E., Gal, C., Gaskell, D., Gautam, T., Glamazdin, O., Gnanvo, K., Gray, V. M., Gu, C., Hague, T., Hamad, G., Hamilton, D., Hamilton, K., Hansen, O., Hauenstein, F., Henry, W., Higinbotham, D. W., Holmstrom, T., Horn, T., Huang, Y., Huber, G. M., Hyde, C., Ibrahim, H., Jen, C-M., Jin, K., Jones, M., Kabir, A., Keppel, C., Khachatryan, V., King, P. M., Li, S., Li, W., Liu, J., Liu, H., Liyanage, A., Magee, J., Malace, S., Mammei, J., Markowitz, P., McClellan, E., Meddi, F., Meekins, D., Mesik, K., Michaels, R., Mkrtchyan, A., Montgomery, R., Camacho, C. Munoz, Myers, L. S., Nadel-Turonski, P., Nazeer, S. J., Nelyubin, V., Nguyen, D., Nuruzzaman, N., Nycz, M., Obretch, O. F., Ou, L., Palatchi, C., Pandey, B., Park, S., Park, K., Peng, C., Pomatsalyuk, R., Pooser, E., Puckett, A. J. R., Punjabi, V., Quinn, B., Rahman, S., Reimer, P. E., Roche, J., Sapkota, I., Sarty, A., Sawatzky, B., Saylor, N. H., Schmookler, B., Shabestari, M. H., Shahinyan, A., Sirca, S., Smith, G. R., Sooriyaarachchilage, S., Sparveris, N., Spies, R., Su, T., Subedi, A., Sulkosky, V., Sun, A., Thorne, L., Tian, Y., Ton, N., Tortorici, F., Trotta, R., Urciuoli, G. M., Voutier, E., Waidyawansa, B., Wang, Y., Wojtsekhowski, B., Wood, S., Yan, X., Ye, L., Ye, Z., Yero, C., Zhang, J., Zhao, Y., and Zhu, P.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

We report measurements of the exclusive neutral pion electroproduction cross section off protons at large values of $x_B$ (0.36, 0.48 and 0.60) and $Q^2$ (3.1 to 8.4 GeV$^2$) obtained from Jefferson Lab Hall A experiment E12-06-014. The corresponding structure functions $d\sigma_L/dt+\epsilon d\sigma_T/dt$, $d\sigma_{TT}/dt$, $d\sigma_{LT}/dt$ and $d\sigma_{LT'}/dt$ are extracted as a function of the proton momentum transfer $t-t_{min}$. The results suggest the amplitude for transversely polarized virtual photons continues to dominate the cross-section throughout this kinematic range. The data are well described by calculations based on transversity Generalized Parton Distributions coupled to a helicity flip Distribution Amplitude of the pion, thus providing a unique way to probe the structure of the nucleon.

Published
2020
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10. Ruling out color transparency in quasi-elastic $^{12}$C(e,e'p) up to $Q^2$ of 14.2 (GeV/c)$^2$

Author

Bhetuwal, D., Matter, J., Szumila-Vance, H., Kabir, M. L., Dutta, D., Ent, R., Abrams, D., Ahmed, Z., Aljawrneh, B., Alsalmi, S., Ambrose, R., Androic, D., Armstrong, W., Asaturyan, A., Assumin-Gyimah, K., Gayoso, C. Ayerbe, Bandari, A., Basnet, S., Berdnikov, V., Bhatt, H., Biswas, D., Boeglin, W. U., Bosted, P., Brash, E., Bukhari, M. H. S., Chen, H., Chen, J. P., Chen, M., Christy, E. M., Covrig, S., Craycraft, K., Danagoulian, S., Day, D., Diefenthaler, M., Dlamini, M., Dunne, J., Duran, B., Evans, R., Fenker, H., Fomin, N., Fuchey, E., Gaskell, D., Gautam, T. N., Gonzalez, F. A., Hansen, J. O., Hauenstein, F., Hernandez, A. V., Horn, T., Huber, G. M., Jones, M. K., Joosten, S., Karki, A., Keppel, C., Khanal, A., King, P. M., Kinney, E., Ko, H. S., Kohl, M., Lashley-Colthirst, N., Li, S., Li, W. B., Liyanage, A. H., Mack, D., Malace, S., Markowitz, P., Meekins, D., Michaels, R., Mkrtchyan, A., Mkrtchyan, H., Nazeer, S. J., Nanda, S., Niculescu, G., Niculescu, I., Nguyen, D., Nuruzzaman, Pandey, B., Park, S., Pooser, E., Puckett, A., Rehfuss, M., Reinhold, J., Santiesteban, N., Sawatzky, B., Smith, G. R., Sun, A., Tadevosyan, V., Trotta, R., Wood, S. A., Yero, C., and Zhang, J.

Subjects
Nuclear Experiment, High Energy Physics - Experiment, Nuclear Theory
Abstract

Quasielastic $^{12}$C$(e,e'p)$ scattering was measured at space-like 4-momentum transfer squared $Q^2$~=~8, 9.4, 11.4, and 14.2 (GeV/c)$^2$, the highest ever achieved to date. Nuclear transparency for this reaction was extracted by comparing the measured yield to that expected from a plane-wave impulse approximation calculation without any final state interactions. The measured transparency was consistent with no $Q^2$ dependence, up to proton momenta of 8.5~GeV/c, ruling out the quantum chromodynamics effect of color transparency at the measured $Q^2$ scales in exclusive $(e,e'p)$ reactions. These results impose strict constraints on models of color transparency for protons., Comment: 5 pages, 2 figures

Published
2020
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11. Form Factors and Two-Photon Exchange in High-Energy Elastic Electron-Proton Scattering

Author

Christy, ME, Gautam, T, Ou, L, Schmookler, B, Wang, Y, Adikaram, D, Ahmed, Z, Albataineh, H, Ali, SF, Aljawrneh, B, Allada, K, Allison, SL, Alsalmi, S, Androic, D, Aniol, K, Annand, J, Arrington, J, Atac, H, Averett, T, Gayoso, C Ayerbe, Bai, X, Bane, J, Barcus, S, Bartlett, K, Bellini, V, Beminiwattha, R, Bericic, J, Bhatt, H, Bhetuwal, D, Biswas, D, Brash, E, Bulumulla, D, Camacho, CM, Campbell, J, Camsonne, A, Carmignotto, M, Castellanos, J, Chen, C, Chen, J-P, Chetry, T, Cisbani, E, Clary, B, Cohen, E, Compton, N, Cornejo, JC, Dusa, S Covrig, Crowe, B, Danagoulian, S, Danley, T, Deconinck, W, Defurne, M, Desnault, C, Di, D, Dlamini, M, Duer, M, Duran, B, Ent, R, Fanelli, C, Fuchey, E, Gal, C, Gaskell, D, Georges, F, Gilad, S, Glamazdin, O, Gnanvo, K, Gramolin, AV, Gray, VM, Gu, C, Habarakada, A, Hague, T, Hamad, G, Hamilton, D, Hamilton, K, Hansen, O, Hauenstein, F, Hernandez, AV, Henry, W, Higinbotham, DW, Holmstrom, T, Horn, T, Huang, Y, Huber, GM, Hyde, C, Ibrahim, H, Israel, N, Jen, C-M, Jin, K, Jones, M, Kabir, A, Karki, B, Keppel, C, Khachatryan, V, King, PM, Li, S, Li, W, Liu, H, Liu, J, Liyanage, AH, Mack, D, and Magee, J

Subjects
nucl-ex, hep-ex
Abstract

We present new precision measurements of the elastic electron-protonscattering cross section for momentum transfer (Q$^2$) up to 15.75~\gevsq.Combined with existing data, these provide an improved extraction of the protonmagnetic form factor at high Q$^2$ and double the range over which alongitudinal/transverse separation of the cross section can be performed. Thedifference between our results and polarization data agrees with that observedat lower Q$^2$ and attributed to hard two-photon exchange (TPE) effects,extending to 8~(GeV/c)$^2$ the range of Q$^2$ for which a discrepancy isestablished at $>$95\% confidence. We use the discrepancy to quantify the sizeof TPE contributions needed to explain the cross section at high Q$^2$.

Published
2021

12. Deep exclusive electroproduction of $π^0$ at high $Q^2$ in the quark valence regime

Author

Collaboration, The Jefferson Lab Hall A, Dlamini, M, Karki, B, Ali, SF, Lin, P-J, Georges, F, Ko, H-S, Israel, N, Rashad, MNH, Stefanko, A, Adikaram, D, Ahmed, Z, Albataineh, H, Aljawrneh, B, Allada, K, Allison, S, Alsalmi, S, Androic, D, Aniol, K, Annand, J, Atac, H, Averett, T, Gayoso, C Ayerbe, Bai, X, Bane, J, Barcus, S, Bartlett, K, Bellini, V, Beminiwattha, R, Bericic, J, Biswas, D, Brash, E, Bulumulla, D, Campbell, J, Camsonne, A, Carmignotto, M, Castellano, J, Chen, C, Chen, J-P, Chetry, T, Christy, ME, Cisbani, E, Clary, B, Cohen, E, Compton, N, Cornejo, JC, Dusa, S Covrig, Crowe, B, Danagoulian, S, Danley, T, Persio, F De, Deconinck, W, Defurne, M, Desnault, C, Di, D, Duer, M, Duran, B, Ent, R, Fanelli, C, Franklin, G, Fuchey, E, Gal, C, Gaskell, D, Gautam, T, Glamazdin, O, Gnanvo, K, Gray, VM, Gu, C, Hague, T, Hamad, G, Hamilton, D, Hamilton, K, Hansen, O, Hauenstein, F, Henry, W, Higinbotham, DW, Holmstrom, T, Horn, T, Huang, Y, Huber, GM, Hyde, C, Ibrahim, H, Jen, C-M, Jin, K, Jones, M, Kabir, A, Keppel, C, Khachatryan, V, King, PM, Li, S, Li, W, Liu, J, Liu, H, Liyanage, A, Magee, J, Malace, S, Mammei, J, Markowitz, P, McClellan, E, and Meddi, F

Subjects
hep-ex, nucl-ex
Abstract

We report measurements of the exclusive neutral pion electroproduction crosssection off protons at large values of $x_B$ (0.36, 0.48 and 0.60) and $Q^2$(3.1 to 8.4 GeV$^2$) obtained from Jefferson Lab Hall A experiment E12-06-014.The corresponding structure functions $d\sigma_L/dt+\epsilon d\sigma_T/dt$,$d\sigma_{TT}/dt$, $d\sigma_{LT}/dt$ and $d\sigma_{LT'}/dt$ are extracted as afunction of the proton momentum transfer $t-t_{min}$. The results suggest theamplitude for transversely polarized virtual photons continues to dominate thecross-section throughout this kinematic range. The data are well described bycalculations based on transversity Generalized Parton Distributions coupled toa helicity flip Distribution Amplitude of the pion, thus providing a unique wayto probe the structure of the nucleon.

Published
2020

13. An Evaluation of Severe Anesthetic-Related Critical Incidents and Risks From the South African Paediatric Surgical Outcomes Study: A 14-Day Prospective, Observational Cohort Study of Pediatric Surgical Patients

Author

Cronjé, Larissa, Torborg, Alexandra M., Meyer, Heidi M., Bhettay, Anisa Z., Diedericks, Johan B.J.S., Cilliers, Celeste, Kluyts, Hyla-Louise, Mrara, Busisiwe, Kalipa, Mandisa N., Cloete, Esther, Burke, Annemie, Mogane, Palesa N., Alphonsus, Christella S., Mbeki, Motselisi, Thomas, Jennifer, Rodseth, Reitze N., Biccard, Bruce M., Allopi, K., Singh, U., Diyelela-Ndwandwa, P., Nongqo, N., Ravid, B., Anamourlis, P., Coetzee, G., Dlamini, M., Foster, C., Nel, D., Oosthuizen, A., Redford, L., Murray, R., Basson, C., Joubert, J., Tshifularo, N., Els, T., Orrock, J., Muthambi, M., Matebesi, T., Tshukudu, G., Maela, D., Allorto, N., Bertie, J., Bishop, D., Chetty, K., Grobbelaar, M., Wise, R., von Steiger, I., Nundlal, P., Garoufalias, E., Westcott, G., Davids, J., Rajah, C., Cairns, C., Mzoneli, Y., Bhagwan, K., Jaworska, M., Semenya, E., Porrill, O., Mungar, R., Seonandan, P., Perumal, N., Bosman, M., De Castro, A., Drummond, L., Du Bruyn, M., Govender, P., Hardcastle, T., Hlangu, Z., Jeena, P., Mbuyisa, M., Naidu, T., Sewlall, J., Taylor, J., Timakia, K., Van der Walt, W., Biyase, T., Khumalo, Z., Kusel, B., Mukama, I., Ramburuth, M., Singaram, S., Schutte, H., Anderson, P., Dorasamy, B., Kint, P., Goga, S., Dube, N., Jithoo, S., Naidoo, L., Naidu, L., Reddy, T., Saman, Y., Rungan, D., Naidoo, K., Kabambi, K., Mgoqo, N., Mofoka, M., Usenbo, A., Chiu, C., Machere, N., Maiwald, D., Davies, G., Serdyn, T., Gokal, P., Dhanjee, N., Wege, M., Govender, S., Tarr, S., Moodley, M., Balkisson, M., Maharaj, A., Ngcobo, S., Rorke, N., Sikhakhane, S., Khumalo, M., Ramsamy, T., Kabongo, K., Kuhn, W., Matos-Puig, R., Naidoo, R., Thotharam, A., Chohan, A., Adam, S., Appel, I., de Vos, C., Gautam, S., Joubert, E., Rautenbach, R., Roytowski, D., Szpytko, A., Brits, E., Naude, G., van Niekerk, J., and Fullerton, Z.

Published
2021
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15. South African Paediatric Surgical Outcomes Study: a 14-day prospective, observational cohort study of paediatric surgical patients

Author

Allopi, K., Singh, U., Diyelela-Ndwandwa, P., Nongqo, N., Ravid, B., Anamourlis, P., Coetzee, G., Dlamini, M., Foster, C., Mogane, P., Nel, D., Oosthuizen, A., Redford, L., Murray, R., Basson, C., Joubert, J., Tshifularo, N., Els, T., Kluyts, H., Orrock, J., Muthambi, M., Matebesi, T., Tshukudu, G., Maela, D., Allorto, N., Bertie, J., Bishop, D., Chetty, K., Grobbelaar, M., Wise, R., von Steiger, I., Nundlal, P., Garoufalias, E., Westcott, G., Davids, J., Rajah, C., Rodseth, R., Cairns, C., Mzoneli, Y., Bhagwan, K., Cloete, E., Biccard, B., Jaworska, M., Semenya, E., Porrill, O., Mungar, R., Seonandan, P., Perumal, N., Alphonsus, C., Bosman, M., De Castro, A., Drummond, L., Du Bruyn, M., Govender, P., Hardcastle, T., Hlangu, Z., Jeena, P., Mbuyisa, M., Naidu, T., Sewlall, J., Taylor, J., Timakia, K., Torborg, A., Van der Walt, W., Biyase, T., Khumalo, Z., Kusel, B., Mukama, I., Ramburuth, M., Singaram, S., Mbeki, M., Schutte, H., Anderson, P., Dorasamy, B., Kint, P., Goga, S., Cronjé, L., Dube, N., Jithoo, S., Naidoo, L., Naidu, L., Reddy, T., Saman, Y., Rungan, D., Naidoo, K., Kabambi, K., Mgoqo, N., Mofoka, M., Mrara, B., Usenbo, A., Chiu, C., Machere, N., Maiwald, D., Davies, G., Serdyn, T., Gokal, P., Bhettay, A., Dhanjee, N., Meyer, H., Wege, M., Thomas, J., Govender, S., Tarr, S., Moodley, M., Balkisson, M., Maharaj, A., Ngcobo, S., Rorke, N., Sikhakhane, S., Khumalo, M., Ramsamy, T., Kabongo, K., Kuhn, W., Matos-Puig, R., Naidoo, R., Thotharam, A., Chohan, A., Adam, S., Appel, I., Burke, A., Cilliers, C., de Vos, C., Gautam, S., Joubert, E., Rautenbach, R., Roytowski, D., Szpytko, A., Brits, E., Diedericks, B., Naude, G., van Niekerk, J., Fullerton, Z., Cronje, L., Diedericks, J., and Kalipa, M.

Published
2019
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17. Cerebral physiology.

Author

Dlamini, M.

Subjects
*PHYSIOLOGY, *PHYSIOLOGICAL transport of oxygen, *INDUCED hypothermia, *BLOOD circulation, *ANESTHETICS, *INTRACRANIAL pressure, *VASCULAR resistance, *OXIMETRY
Abstract

The article focuses on cerebral physiology, covering topics such as cerebral metabolic rate, cerebral circulation, and factors affecting cerebral blood flow. It discusses how various physiological variables such as cerebral autoregulation, neurovascular coupling, and vasomotor reactivity influence cerebral blood flow and oxygen delivery.

Published
2023
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18. The Effect of Irrigation Frequency and Amount on the Growth and Yield of Kale (Brassica Oleracea var. Acephala)

Author

Dlamini M., V., Manyatsi, A.M., and Dube, S.

Subjects
amount, frequency, agriculture journal, Bottle drip, irrigation, yield, Kale
Abstract

— A study was conducted in which Kale (Brassica oleracea var. Acephala) was grown in a Randomized Block Design experiment at the Faculty of Agriculture at Luyengo Campus of the University of Eswatini to compare five different irrigation frequencies (treatments) on the production of kale. The five treatments were: Treatment 0 (T0) the control irrigated daily – applying 5.0 mm, treatment 1 (T1) irrigated after two days, treatment 2 (T2) irrigated after three days, treatment 3 (T3) irrigated after four days and treatment 4 (T4) irrigated after five days. Two litre (2 L) soft drink plastic bottles were used as the irrigation method. The results showed that irrigating kale every two days and applying 14 mm of water was the best option for the Luyengo area compared to applying 5 mm daily. Skipping more than two days between irrigations resulted in significantly lower yields. There were no significant differences in the other measured plant parameters: leaflength, leafwidth, plant height and the number of leaves per plant. The results of these parameters for treatment 1 (T1) were higher of that of the other treatments.

Published
2022
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19. TB testing in HIV-positive patients prior to antiretroviral treatment

Author

Spooner, E., primary, Reddy, S., additional, Ntoyanto, S., additional, Sakadavan, Y, additional, Reddy, T, additional, Mahomed, S., additional, Mlisana, K, additional, Dlamini, M, additional, Daniels, B., additional, Luthuli, N, additional, Ngomane, N, additional, Kiepiela, P, additional, and Coutsoudis, A, additional

Published
2022
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22. Deep Exclusive Electroproduction of π0 at High Q2 in the Quark Valence Regime

Author

Dlamini, M. and Androić, Darko

Subjects
High Energy Physics::Experiment, experimental results, distribution amplitude, electroproduction, generalized parton distribution, virtual quark, structure function momentum, Nuclear Experiment
Abstract

We report measurements of the exclusive neutral pion electroproduction cross section off protons at large values of xB (0.36, 0.48, and 0.60) and Q2 (3.1 to 8.4 GeV2) obtained from Jefferson Lab Hall A experiment E12-06-014. The corresponding structure functions dσT/dt+εdσL/dt, dσTT/dt, dσLT/dt, and dσLT′/dt are extracted as a function of the proton momentum transfer t-tmin. The results suggest the amplitude for transversely polarized virtual photons continues to dominate the cross section throughout this kinematic range. The data are well described by calculations based on transversity generalized parton distributions coupled to a helicity flip distribution amplitude of the pion, thus providing a unique way to probe the structure of the nucleon.

Published
2021

23. Ruling out Color Transparency in Quasielastic $^{12}$C(e,e'p) up to $Q^2$ of 14.2 (GeV/c)$^2$

Author

Bhetuwal, D., Matter, J., Szumila-Vance, H., Kabir, M. L., Dutta, D., Ent, R., Abrams, D., Ahmed, Z., Aljawrneh, B., Alsalmi, S., Ambrose, R., Androic, D., Armstrong, W., Asaturyan, A., Assumin-Gyimah, K., Gayoso, C. Ayerbe, Bandari, A., Basnet, S., Berdnikov, V., Bhatt, H., Biswas, D., Boeglin, W. U., Bosted, P., Brash, E., Bukhari, M. H. S., Chen, H., Chen, J. P., Chen, M., Christy, E. M., Covrig, S., Craycraft, K., Danagoulian, S., Day, D., Diefenthaler, M., Dlamini, M., Dunne, J., Duran, B., Evans, R., Fenker, H., Fomin, N., Fuchey, E., Gaskell, D., Gautam, T. N., Gonzalez, F. A., Hansen, J. O., Hauenstein, F., Hernandez, A. V., Horn, T., Huber, G. M., Jones, M. K., Joosten, S., Karki, A., Keppel, C., Khanal, A., King, P. M., Kinney, E., Ko, H. S., Kohl, M., Lashley-Colthirst, N., Li, S., Li, W. B., Liyanage, A. H., Mack, D., Malace, S., Markowitz, P., Meekins, D., Michaels, R., Mkrtchyan, A., Mkrtchyan, H., Nazeer, S. J., Nanda, S., Niculescu, G., Niculescu, I., Nguyen, D., Nuruzzaman, Pandey, B., Park, S., Pooser, E., Puckett, A., Rehfuss, M., Reinhold, J., Santiesteban, N., Sawatzky, B., Smith, G. R., Sun, A., Tadevosyan, V., Trotta, R., Wood, S. A., Yero, C., Zhang, J., Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Hall C

Subjects
Nuclear Theory, carbon: target, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], FOS: Physical sciences, color: transparency, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], p: recoil, Nuclear Experiment (nucl-ex), Nuclear Experiment, yield: measured, Nuclear Physics, nucleus: target, electron nucleus: scattering, momentum transfer, p: momentum, inelastic scattering, impulse approximation: plane wave, quantum chromodynamics: effect, nucleus: transparency, experimental results, Jefferson Lab
Abstract

Quasielastic $^{12}$C$(e,e'p)$ scattering was measured at space-like 4-momentum transfer squared $Q^2$~=~8, 9.4, 11.4, and 14.2 (GeV/c)$^2$, the highest ever achieved to date. Nuclear transparency for this reaction was extracted by comparing the measured yield to that expected from a plane-wave impulse approximation calculation without any final state interactions. The measured transparency was consistent with no $Q^2$ dependence, up to proton momenta of 8.5~GeV/c, ruling out the quantum chromodynamics effect of color transparency at the measured $Q^2$ scales in exclusive $(e,e'p)$ reactions. These results impose strict constraints on models of color transparency for protons., 5 pages, 2 figures

Published
2021
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24. Enhancing the teaching and learning of mathematical geometry at a TVET college using indigenous knowledge approach

Author

Madimabe, Makhosi Princess, Tsotetsi, C. T., Dlamini, M. E., Madimabe, Makhosi Princess, Tsotetsi, C. T., and Dlamini, M. E.

Abstract

This study aimed at enhancing the teaching and learning of Mathematical Geometry through the integration of indigenous knowledge as an approach. This study defines Mathematical Geometry as a division in Mathematics concerned with shapes, their relationships, their properties and relations of point, lines, surface and the relative arrangement in various parts of the environment that enables students' spatial imagination. Indigenous knowledge is defined as the overall summation of the knowledge, language, and skills which individuals in a precise community retain and which enables them to get the most out of their surroundings. The literature indicates that Education in South Africa is customized on western values. This has contributed to many students located in the Rural Areas being unable to connect the education they receive at school and their everyday experiences. Consequently, there is a high failure rate amongst Mathematics students, as well as the apparent levels of difficulty in Mathematical Geometry. It is against this background that previous work has attempted to address these challenges, but with less success, hence this study emerged. The study intends to respond to the research question by making use of a Pilot Practical Assessment Task as a means of demonstrating how indigenous knowledge can be integrated into the teaching and learning of Mathematical Geometry through the aid of indigenous teaching aids, in particular bead work. Furthermore, the study aimed to determine challenges prevailing in the teaching and learning of MG, conducive conditions to the solution and the threats that could hinder the successful implementation of the approach. Critical Emancipatory Research coached the study while Participatory Action Research was used as a Research Methodology for generating data through Focus Group Discussion. The discussions occurred between 10 co-researchers, whereby the co-researchers were selected based on their level of experience in Mathematics

Published
2020

34. Assessing the availability of community water at Madlangamphisi, a community in the Hhohho region of Eswatini

Author

Dlamini, M. V., Ndlela, Z. P., Dlamini, K. A., and Masuku, G.

Subjects
Community, water, rural schemes
Abstract

— The research was conducted to assess the availability of domestic water and the extent of the problems associated with water scarcity at Madlangamphisi area in the Hhohho district of Eswatini. The research was a descriptive survey. A questionnaire was used to collect both qualitative and quantitative data for the survey. A total of 169 households out of 300 households in the community were randomly selected to participate in the survey. The majority (56.2%) of the households confirmed that there was water scarcity problems in the area as the streams they used for domestic water frequently dried up during the winter months. The study showed that a majority, 51.5% used water from rivers as the main source of domestic water, while 40.2% of the people travelled for more than 1,000 m to fetch water. To cope with water scarcity problems, 43.2% of the households reduced their water consumption level during droughts while 45% practiced rooftop rainwater harvesting. The study concluded that Madlangamphisi community experienced serious water scarcity problems since they relied on unprotected water sources for domestic use. Moreover, they had to travel for more than 200 m to collect water from nearest sources which is considered an indication of water scarcity by the WHO. The study observed that there was a need to introduce a rural water supply scheme in the area to solve the water scarcity problems and that households should treat water for drinking by either boiling or use a disinfectant to eliminate pathogenic organisms in the water.

Published
2019
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35. Comparing the performance of a home-made bottle drip to a commercial drip system in the production of lettuce (Lactucasativa L.)

Author

Dlamini M., V. and Khumalo, T.

Subjects
otorhinolaryngologic diseases, Lettuce, yield, drip, irrigation, water use efficiency
Abstract

— A study was conducted in which lettuce (Lactucasativa L.) was grown in a plot at the Faculty of Agriculture at Luyengo Campus of the University of Eswatini to compare three different irrigation methods on the production of marketable heads of lettuce. The performance of lettuce under a commercial drip tape was compared with a home-made bottle drip and a hand watering can as used typically by rural people in the country. The commercial drip had emitters discharging 2 liters per hour and therefore 2 liters per hour was applied with both the home-made bottle drip and the watering can during irrigation. The irrigation frequency was every after two days for all the treatments. The plot sizes were 1.5 m x 4.0 m and there were four replications per treatment. There were eighteen lettuce plants per plot. The lettuce was grown for a period of four weeks and then harvested whole. Yield parameters measured included the plant height (cm), leaf area index (LAI), root length (cm) and the fresh head mass (grams). Significant differences (P < 0.01) between treatments were obtained for fresh lettuce head mass and root length. The commercial drip treatment had largest fresh mass at 226.8 g. It was followed by bottle drip at 184.8 g. The control had the lowest yield at 165.3 g. There were no significant differences between treatments for plant height and leaf area index. It was concluded that the home-made bottle drip irrigation method could be recommended for rural people who cannot afford to buy the commercial drip system for the production of vegetables for household consumption.

Published
2019
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36. Sodium disturbances in neurosurgery.

Author

Dlamini, M.

Subjects
*HYPONATREMIA, *DIABETES insipidus, *SODIUM, *INAPPROPRIATE ADH syndrome
Abstract

The article offers information on the Sodium disturbances in neurosurgery; and mentions that sodium regulation is controlled via renal mechanisms that are influenced by both sympathetic innervation and natriuretic factor.

Published
2021
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37. South African Paediatric Surgical Outcomes Study: a 14-day prospective, observational cohort study of paediatric surgical patients

Author

Torborg, A., primary, Cronje, L., additional, Thomas, J., additional, Meyer, H., additional, Bhettay, A., additional, Diedericks, J., additional, Cilliers, C., additional, Kluyts, H., additional, Mrara, B., additional, Kalipa, M., additional, Rodseth, R., additional, Biccard, B., additional, Allopi, K., additional, Singh, U., additional, Diyelela-Ndwandwa, P., additional, Nongqo, N., additional, Ravid, B., additional, Anamourlis, P., additional, Coetzee, G., additional, Dlamini, M., additional, Foster, C., additional, Mogane, P., additional, Nel, D., additional, Oosthuizen, A., additional, Redford, L., additional, Murray, R., additional, Basson, C., additional, Joubert, J., additional, Tshifularo, N., additional, Els, T., additional, Orrock, J., additional, Muthambi, M., additional, Matebesi, T., additional, Tshukudu, G., additional, Maela, D., additional, Allorto, N., additional, Bertie, J., additional, Bishop, D., additional, Chetty, K., additional, Grobbelaar, M., additional, Wise, R., additional, von Steiger, I., additional, Nundlal, P., additional, Garoufalias, E., additional, Westcott, G., additional, Davids, J., additional, Rajah, C., additional, Cairns, C., additional, Mzoneli, Y., additional, Bhagwan, K., additional, Cloete, E., additional, Jaworska, M., additional, Semenya, E., additional, Porrill, O., additional, Mungar, R., additional, Seonandan, P., additional, Perumal, N., additional, Alphonsus, C., additional, Bosman, M., additional, De Castro, A., additional, Drummond, L., additional, Du Bruyn, M., additional, Govender, P., additional, Hardcastle, T., additional, Hlangu, Z., additional, Jeena, P., additional, Mbuyisa, M., additional, Naidu, T., additional, Sewlall, J., additional, Taylor, J., additional, Timakia, K., additional, Torborg, A., additional, Van der Walt, W., additional, Biyase, T., additional, Khumalo, Z., additional, Kusel, B., additional, Mukama, I., additional, Ramburuth, M., additional, Singaram, S., additional, Mbeki, M., additional, Schutte, H., additional, Anderson, P., additional, Dorasamy, B., additional, Kint, P., additional, Goga, S., additional, Cronjé, L., additional, Dube, N., additional, Jithoo, S., additional, Naidoo, L., additional, Naidu, L., additional, Reddy, T., additional, Saman, Y., additional, Rungan, D., additional, Naidoo, K., additional, Kabambi, K., additional, Mgoqo, N., additional, Mofoka, M., additional, Usenbo, A., additional, Chiu, C., additional, Machere, N., additional, Maiwald, D., additional, Davies, G., additional, Serdyn, T., additional, Gokal, P., additional, Dhanjee, N., additional, Wege, M., additional, Govender, S., additional, Tarr, S., additional, Moodley, M., additional, Balkisson, M., additional, Maharaj, A., additional, Ngcobo, S., additional, Rorke, N., additional, Sikhakhane, S., additional, Khumalo, M., additional, Ramsamy, T., additional, Kabongo, K., additional, Kuhn, W., additional, Matos-Puig, R., additional, Naidoo, R., additional, Thotharam, A., additional, Chohan, A., additional, Adam, S., additional, Appel, I., additional, Burke, A., additional, de Vos, C., additional, Gautam, S., additional, Joubert, E., additional, Rautenbach, R., additional, Roytowski, D., additional, Szpytko, A., additional, Brits, E., additional, Diedericks, B., additional, Naude, G., additional, van Niekerk, J., additional, and Fullerton, Z., additional

Published
2019
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41. The association between preoperative anemia and postoperative morbidity in pediatric surgical patients: A secondary analysis of a prospective observational cohort study.

Author

Meyer, Heidi M., Torborg, Alexandra, Cronje, Larissa, Thomas, Jennifer, Bhettay, Anisa, Diedericks, Johan, Cilliers, Celeste, Kluyts, Hyla, Mrara, Busisiwe, Kalipa, Mandisa, Biccard, Bruce, Goobie, Susan, Allopi, K, Singh, U, Diyelela‐Ndwandwa, P, Nongqo, N, Ravid, B, Anamourlis, P, Coetzee, G, and Dlamini, M

Subjects
SECONDARY analysis, ANEMIA, COHORT analysis, SURGICAL complications, MIDDLE-income countries
Abstract

Background: The prevalence of anemia in the South African pediatric surgical population is unknown. Anemia may be associated with increased postoperative complications. We are unaware of studies documenting these findings in patients in low‐ and middle‐income countries (LMICs). Aim: The primary aim of this study was to describe the association between preoperative anemia and 26 defined postoperative complications, in noncardiac pediatric surgical patients. Secondary aims included describing the prevalence of anemia and risk factors for intraoperative blood transfusion. Method: This was a secondary analysis of the South African Paediatric Surgical Outcomes Study, a prospective, observational surgical outcomes study. Inclusion criteria were all consecutive patients aged between 6 months and <16 years, presenting to participating centers during the study period who underwent elective and nonelective noncardiac surgery and had a preoperative hemoglobin recorded. Exclusion criteria were patients aged <6 months, undergoing cardiac surgery, or without a preoperative Hb recorded. To determine whether an independent association existed between preoperative anemia and postoperative complications, a hierarchical stepwise logistic regression was conducted. Results: There were 1094 eligible patients. In children in whom a preoperative Hb was recorded 46.2% had preoperative anemia. Preoperative anemia was independently associated with an increased risk of any postoperative complication (odds ratio 2.0, 95% confidence interval: 1.3‐3.1, P =.002). Preoperative anemia (odds ratio 3.6, 95% confidence interval: 1.8‐7.1, P <.001) was an independent predictor of intraoperative blood transfusion. Conclusion: Preoperative anemia had a high prevalence in a LMIC and was associated with increased postoperative complications. The main limitation of our study is the ability to generalize the results to the wider pediatric surgical population, as these findings only relate to children in whom a preoperative Hb was recorded. Prospective studies are required to determine whether correction of preoperative anemia reduces morbidity and mortality in children undergoing noncardiac surgery. [ABSTRACT FROM AUTHOR]

Published
2020
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47. Nurse-managed care for health care workers in southern Africa

Author

Dlamini M, Williams, Mamba P, and Mallinson Rk

Subjects
Pulmonary and Respiratory Medicine, Service delivery framework, media_common.quotation_subject, Health Personnel, education, Population, Occupational Health Services, HIV Infections, Communicable Diseases, Nurse's Role, Scarcity, Nursing, Societies, Nursing, Health care, Pandemic, Medicine, Humans, Tuberculosis, media_common, Quality of Health Care, education.field_of_study, business.industry, virus diseases, Private sector, Occupational Diseases, Infectious Diseases, Workforce, Managed care, business, Delivery of Health Care, Eswatini
Abstract

In Swaziland, the health care system is experiencing severe scarcity of health care workers (HCWs) due to difficult working conditions, migration and the human immunodeficiency virus (HIV) pandemic. Nurses and other HCWs in Swaziland are personally as affected by communicable diseases as the general population. High levels of HIV and TB co-infection bring added complexity to care. The loss of skilled staff in key positions has had a particularly negative impact on the quality of care and service delivery. The Swaziland Nurses Association (SNA) has established a Centre for Comprehensive Wellness for HCWs in the public and private sector and their immediate families to support the health workforce.

Published
2013

48. CHALLENGING HETERONORMATIVE SCRIPTS THROUGH FILM AND TRANSFORMATIVE PEDAGOGY AMONG TVET COLLEGE STUDENTS.

Author

Ngidi, N. D. and Dlamini, M. A. C.

Subjects
COLLEGE students, VOCATIONAL education, UNIVERSITIES & colleges, SOCIAL change, HETERONORMATIVITY
Abstract

We describe an initiative aimed at addressing homophobia and destabilising heteronormativity in higher education. The initiative was implemented in 2014 at a Technical Vocational Education and Training (TVET) college in KwaZulu-Natal (KZN) and involved 20 newly formed peer educators and one lecturer from the college. We focussed on work which emphasised the creation of a safe and welcoming environment for gender non-conforming students. In particular, we made use of film and transformative pedagogy to address homophobia at the TVET college. Through analysing the participants' reflections, we found evidence that the intervention facilitated students' critical thinking and self-examination, while helping them find alternative ways of bringing about social change and gender equity in their 'day-to-day praxis'. The initiative further provided space to forge new ways of talking about and addressing abuse of LGBTI students; thus enabling an appreciation of the resourcefulness of film. Overall we highlight the potential value of film and transformative pedagogy in addressing homophobia and disturbing heteronormativity among students in a TVET college. [ABSTRACT FROM AUTHOR]

Published
2017
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49. A CFD simulation of a single phase hydrocyclone flow field

Author

Dlamini, M F, Powell, M S, Meyer, C J, Department of Mechanical Engineering, and Faculty of Engineering and the Built Environment

Subjects
Physics::Fluid Dynamics, hydrocyclone, computational fluid dynamics (CFD), classification mechanism
Abstract

The hydrodynamics of a hydrocyclone present a complex internal flow structure, the numerical simulation of which remains a nontrivial task. We report on three-dimensional water-only computational fluid dynamics (CFD) hydrocyclone flow field predictions and highlight some of the issues concerned with the development of a CFD model incorporating an air core. The potential for the application of CFD as a hydrocyclone design tool is also discussed. Physically realistic velocity profile predictions were obtained, which challenge the classical account of the hydrocyclone radial particle classification mechanism. A pressure field distribution consistent with literature reports was also predicted.

Published
2005

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