Search

Your search keyword '"Colvin J"' showing total 1,037 results
Start Over Author "Colvin J"
1,037 results on '"Colvin J"'

2. INFLUENCE OF ALTERNATIVE PLANT HABITATS ON CASSAVA WHITEFLY COLONISATION IN MALAWI.

Author

TEMBO, Y. L. B., KARUNGI, J., KYAMANYWA, S., KACHIGAMBA, D., MACFAYDEN, S., and COLVIN, J.

Subjects
POTATOES, PLANT habitats, COLONIZATION (Ecology), SWEETPOTATO whitefly, VIRUS diseases, SWEET potatoes
Abstract

Copyright of African Crop Science Journal is the property of African Crop Science Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024
Full Text
View/download PDF

5. Effect of temperature and cassava genotype on the development, fecundity and reproduction of Bemisia tabaci SSA1

Author

Katono, K., Macfadyen, S., Omongo, C.A., Colvin, J., Karungi, J., and Otim, M.H.

Subjects
Climate change, net reproductive rate, General Medicine
Abstract

The Bemisia tabaci complex is currently recognised as key agricultural pests that cause economic damage globally. Temperature is the most important driver of changes in behaviour, abundance and distribution of insect pests, including the whitefly (Bemisia tabaci). The objective of this study was to evaluate the development, fecundity and reproduction of B. tabaci SSA1 on cassava genotypes under a range of temperatures. A laboratory study was conducted using three cassava genotypes (Alado alado, NAROCASS 1 and NASE 14) at five constant temperatures (16, 20, 24, 28 and 32 °C). The parameters assessed included development duration, survival, fecundity and population parameters for B. tabaci SSA1. Temperature had significant effects (P0.05). An inverse relationship was observed between development time and temperature for all stages across all cassava genotypes. The total life cycle was 63.8 days at 16 °C and 17.9 days at 32 °C on NAROCASS 1. Survival for each stage throughout the entire life cycle increased with temperature and was highest at 32 °C, although this was not significantly different from that at 28 °C. Fecundity increased with temperature and was highest at 32 °C on all cassava genotypes. For all cassava genotypes, the intrinsic rate of increase (rm), finite rate of increase (l) and net reproductive rate (Ro) increased with temperature, while mean generation time (T) reduced following a similar pattern. At 32 °C, rm, Ro, l and T were 0.2, 48.7, 1.2 and 22.6 days, respectively; compared to 0.01, 1.9, 1.0 and 71.2 days at 16 °C on Alado alado. Therefore, the ideal development temperature for B. tabaci SSA1 is 32 °C. Thus, there is a risk of accelerated future expansion of B. tabaci SSA1 populations globally, with global warming and climate variability.

Published
2023

24. Transforming knowledge systems for life on Earth: Visions of future systems and how to get there

Author

Fazey I, Schäpke N, Caniglia G, Hodgson A, Kendrick I, Lyon C, Page G, Patterson J, Riedy C, Strasser T, Verveen S, Adams D, Goldstein B, Klaes M, Leicester G, Linyard A, McCurdy A, Ryan P, Sharpe B, Silvestri G, Abdurrahim AY, Abson D, Adetunji OS, Aldunce P, Alvarez-Pereira C, Amparo JM, Amundsen H, Anderson L, Andersson L, Asquith M, Augenstein K, Barrie J, Bent D, Bentz J, Bergsten A, Berzonsky C, Bina O, Blackstock K, Boehnert J, Bradbury H, Brand C, Böhme (born Sangmeister) J, Bøjer MM, Carmen E, Charli-Joseph L, Choudhury S, Chunhachoti-ananta S, Cockburn J, Colvin J, Connon ILC, Cornforth R, Cox RS, Cradock-Henry N, Cramer L, Cremaschi A, Dannevig H, Day CT, de Lima Hutchison C, de Vrieze A, Desai V, Dolley J, Duckett D, Durrant RA, Egermann M, Elsner (Adams) E, Fremantle C, Fullwood-Thomas J, Galafassi D, Gobby J, Golland A, González-Padrón SK, Gram-Hanssen I, Grandin J, Grenni S, Lauren Gunnell J, Gusmao F, Hamann M, Harding B, Harper G, Hesselgren M, Hestad D, Heykoop CA, Holmén J, Holstead K, Hoolohan C, Horcea-Milcu AI, Horlings LG, Howden SM, Howell RA, Huque SI, Inturias Canedo ML, Iro CY, Ives CD, John B, Joshi R, Juarez-Bourke S, Juma DW, Karlsen BC, Kliem L, and Kläy A

Subjects
1604 Human Geography, 1605 Policy and Administration
Abstract

© 2020 The Author(s) Formalised knowledge systems, including universities and research institutes, are important for contemporary societies. They are, however, also arguably failing humanity when their impact is measured against the level of progress being made in stimulating the societal changes needed to address challenges like climate change. In this research we used a novel futures-oriented and participatory approach that asked what future envisioned knowledge systems might need to look like and how we might get there. Findings suggest that envisioned future systems will need to be much more collaborative, open, diverse, egalitarian, and able to work with values and systemic issues. They will also need to go beyond producing knowledge about our world to generating wisdom about how to act within it. To get to envisioned systems we will need to rapidly scale methodological innovations, connect innovators, and creatively accelerate learning about working with intractable challenges. We will also need to create new funding schemes, a global knowledge commons, and challenge deeply held assumptions. To genuinely be a creative force in supporting longevity of human and non-human life on our planet, the shift in knowledge systems will probably need to be at the scale of the enlightenment and speed of the scientific and technological revolution accompanying the second World War. This will require bold and strategic action from governments, scientists, civic society and sustained transformational intent.

Published
2020

27. Electrophoretic and diffusion studies on gluten /

Author

Colvin, J. R., University of Alberta. Department of Plant Science, University of Alberta Libraries (archive.org), Colvin, J. R., and University of Alberta. Department of Plant Science

Subjects
Gluten
Published
1948

29. Materials science under extreme conditions of pressure and strain rate

Author

Remington, B. A., Bazan, G., Belak, J., Bringa, E., Colvin, J. D., Edwards, M. J., Glendinning, S. G., Kalantar, D. H., Kumar, M., Lasinski, B. F., Lorenz, K. T., McNaney, J. M., Pollaine, S. M., Rowley, D., Stölken, J. S., Weber, S. V., Wolfer, W. G., Caturla, M., Ivanov, D. S., Zhigilei, L. V., Kad, B., Meyers, M. A., Schneider, M., Meyerhofer, D. D., Yaakobi, B., and Wark, J. S.

Published
2004
Full Text
View/download PDF

32. Scoticitas: Reframing "Scotus" in Late Antiquity and the Early Middle Ages.

Author

Reaux Colvin, J.-Michel

Abstract

Early medieval ethnic thinkers inherited a conceptual palette from their classical and late antique forebears. This inheritance included an essentially derogatory estimation of Ireland as an extreme place at the extremity of the known world and the Irish as thoroughgoing barbarians. Coupled with the persistence of this estimation of alterity was lexical innovation—especially in the realm of ethnonyms. The word "Scotus," a Late Latin coinage of the fourth century CE, initially conveyed forward the semantic field previously established to refer to the "Otherness" of the Irish. Owing to "autoethnographic" reappraisals undertaken by the Scoti themselves and, consequentially, the "cultural brokerage" of Bede in his Historia ecclesiastica, Continental ecclesiastics grew to reassess these Scoti and to valorize them. So complete was this valorization that the word "Scotus" became uncoupled from its ethnonymic work as historians and hagiographers began to apply the word vocationally. In this sense, a Scotus was an itinerant, avowed, encloistered ecclesiastic abroad. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

46. Transforming knowledge systems for life on Earth : Visions of future systems and how to get there

Author

Fazey, I., Schäpke, N., Caniglia, G., Hodgson, A., Kendrick, I., Lyon, C., Page, G., Patterson, J., Riedy, C., Strasser, T., Verveen, S., Adams, D., Goldstein, B., Klaes, M., Leicester, G., Linyard, A., McCurdy, A., Ryan, P., Sharpe, B., Silvestri, G., Abdurrahim, A. Y., Abson, D., Adetunji, O. S., Aldunce, P., Alvarez-Pereira, C., Amparo, J. M., Amundsen, H., Anderson, L., Andersson, L., Asquith, M., Augenstein, K., Barrie, J., Bent, D., Bentz, J., Bergsten, A., Berzonsky, C., Bina, O., Blackstock, K., Boehnert, J., Bradbury, H., Brand, C., Böhme (born Sangmeister), J., Bøjer, M. M., Carmen, E., Charli-Joseph, L., Choudhury, S., Chunhachoti-ananta, S., Cockburn, J., Colvin, J., Connon, I. L. C., Cornforth, R., Cox, R. S., Cradock-Henry, N., Cramer, L., Cremaschi, A., Dannevig, H., Day, C. T., de Lima Hutchison, C., de Vrieze, A., Desai, V., Dolley, J., Duckett, D., Durrant, R. A., Egermann, M., Elsner (Adams), E., Fremantle, C., Fullwood-Thomas, J., Galafassi, D., Gobby, J., Golland, A., González-Padrón, S. K., Gram-Hanssen, I., Grandin, J., Grenni, S., Lauren Gunnell, J., Gusmao, F., Hamann, M., Harding, B., Harper, G., Hesselgren, M., Hestad, D., Heykoop, C. A., Holmén, J., Holstead, K., Hoolohan, C., Horcea-Milcu, A. -I, Horlings, L. G., Howden, S. M., Howell, R. A., Huque, S. I., Inturias Canedo, M. L., Iro, C. Y., Ives, C. D., John, B., Joshi, R., Juarez-Bourke, S., Juma, D. W., Karlsen, B. C., Kliem, L., Kläy, A., Kuenkel, P., Kunze, I., Lam, D. P. M., Lang, D. J., Larkin, A., Light, A., Luederitz, C., Luthe, T., Maguire, C., Mahecha-Groot, A. -M, Malcolm, J., Marshall, F., Maru, Y., McLachlan, C., Mmbando, P., Mohapatra, S., Moore, M. -L, Moriggi, A., Morley-Fletcher, M., Moser, S., Mueller, K. M., Mukute, M., Mühlemeier, S., Naess, L. O., Nieto-Romero, M., Novo, P., ÓBrien, K., O'Connell, D. A., O'Donnell, K., Olsson, Per, Pearson, K. R., Pereira, L., Petridis, P., Peukert, D., Phear, N., Pisters, S. R., Polsky, M., Pound, D., Preiser, R., Rahman, M. S., Reed, M. S., Revell, P., Rodriguez, I., Rogers, B. C., Rohr, J., Nordbø Rosenberg, M., Ross, H., Russell, S., Ryan, M., Saha, P., Schleicher, K., Schneider, F., Scoville-Simonds, M., Searle, B., Sebhatu, S. P., Sesana, E., Silverman, H., Singh, C., Sterling, E., Stewart, S. -J, Tàbara, J. D., Taylor, D., Thornton, P., Tribaldos, T. M., Tschakert, P., Uribe-Calvo, N., Waddell, S., Waddock, S., van der Merwe, L., van Mierlo, B., van Zwanenberg, P., Velarde, S. J., Washbourne, C. -L, Waylen, K., Weiser, A., Wight, I., Williams, S., Woods, M., Wolstenholme, R., Wright, N., Wunder, S., Wyllie, A., Young, H. R., Fazey, I., Schäpke, N., Caniglia, G., Hodgson, A., Kendrick, I., Lyon, C., Page, G., Patterson, J., Riedy, C., Strasser, T., Verveen, S., Adams, D., Goldstein, B., Klaes, M., Leicester, G., Linyard, A., McCurdy, A., Ryan, P., Sharpe, B., Silvestri, G., Abdurrahim, A. Y., Abson, D., Adetunji, O. S., Aldunce, P., Alvarez-Pereira, C., Amparo, J. M., Amundsen, H., Anderson, L., Andersson, L., Asquith, M., Augenstein, K., Barrie, J., Bent, D., Bentz, J., Bergsten, A., Berzonsky, C., Bina, O., Blackstock, K., Boehnert, J., Bradbury, H., Brand, C., Böhme (born Sangmeister), J., Bøjer, M. M., Carmen, E., Charli-Joseph, L., Choudhury, S., Chunhachoti-ananta, S., Cockburn, J., Colvin, J., Connon, I. L. C., Cornforth, R., Cox, R. S., Cradock-Henry, N., Cramer, L., Cremaschi, A., Dannevig, H., Day, C. T., de Lima Hutchison, C., de Vrieze, A., Desai, V., Dolley, J., Duckett, D., Durrant, R. A., Egermann, M., Elsner (Adams), E., Fremantle, C., Fullwood-Thomas, J., Galafassi, D., Gobby, J., Golland, A., González-Padrón, S. K., Gram-Hanssen, I., Grandin, J., Grenni, S., Lauren Gunnell, J., Gusmao, F., Hamann, M., Harding, B., Harper, G., Hesselgren, M., Hestad, D., Heykoop, C. A., Holmén, J., Holstead, K., Hoolohan, C., Horcea-Milcu, A. -I, Horlings, L. G., Howden, S. M., Howell, R. A., Huque, S. I., Inturias Canedo, M. L., Iro, C. Y., Ives, C. D., John, B., Joshi, R., Juarez-Bourke, S., Juma, D. W., Karlsen, B. C., Kliem, L., Kläy, A., Kuenkel, P., Kunze, I., Lam, D. P. M., Lang, D. J., Larkin, A., Light, A., Luederitz, C., Luthe, T., Maguire, C., Mahecha-Groot, A. -M, Malcolm, J., Marshall, F., Maru, Y., McLachlan, C., Mmbando, P., Mohapatra, S., Moore, M. -L, Moriggi, A., Morley-Fletcher, M., Moser, S., Mueller, K. M., Mukute, M., Mühlemeier, S., Naess, L. O., Nieto-Romero, M., Novo, P., ÓBrien, K., O'Connell, D. A., O'Donnell, K., Olsson, Per, Pearson, K. R., Pereira, L., Petridis, P., Peukert, D., Phear, N., Pisters, S. R., Polsky, M., Pound, D., Preiser, R., Rahman, M. S., Reed, M. S., Revell, P., Rodriguez, I., Rogers, B. C., Rohr, J., Nordbø Rosenberg, M., Ross, H., Russell, S., Ryan, M., Saha, P., Schleicher, K., Schneider, F., Scoville-Simonds, M., Searle, B., Sebhatu, S. P., Sesana, E., Silverman, H., Singh, C., Sterling, E., Stewart, S. -J, Tàbara, J. D., Taylor, D., Thornton, P., Tribaldos, T. M., Tschakert, P., Uribe-Calvo, N., Waddell, S., Waddock, S., van der Merwe, L., van Mierlo, B., van Zwanenberg, P., Velarde, S. J., Washbourne, C. -L, Waylen, K., Weiser, A., Wight, I., Williams, S., Woods, M., Wolstenholme, R., Wright, N., Wunder, S., Wyllie, A., and Young, H. R.

Abstract

Formalised knowledge systems, including universities and research institutes, are important for contemporary societies. They are, however, also arguably failing humanity when their impact is measured against the level of progress being made in stimulating the societal changes needed to address challenges like climate change. In this research we used a novel futures-oriented and participatory approach that asked what future envisioned knowledge systems might need to look like and how we might get there. Findings suggest that envisioned future systems will need to be much more collaborative, open, diverse, egalitarian, and able to work with values and systemic issues. They will also need to go beyond producing knowledge about our world to generating wisdom about how to act within it. To get to envisioned systems we will need to rapidly scale methodological innovations, connect innovators, and creatively accelerate learning about working with intractable challenges. We will also need to create new funding schemes, a global knowledge commons, and challenge deeply held assumptions. To genuinely be a creative force in supporting longevity of human and non-human life on our planet, the shift in knowledge systems will probably need to be at the scale of the enlightenment and speed of the scientific and technological revolution accompanying the second World War. This will require bold and strategic action from governments, scientists, civic society and sustained transformational intent.

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results