14 results
Cannabis use and psychotic disorders in diverse settings in the Global South: findings from INTREPID II
- Joni Lee Pow, Casswina Donald, Marta di Forti, Tessa Roberts, Helen A. Weiss, Olatunde Ayinde, Sujit John, Bola Olley, Akin Ojagbemi, Georgina Miguel Esponda, Joseph Lam, Paramasivam Poornachandrika, Paola Dazzan, Fiona Gaughran, Palaniyandi Ponnusamy Kannan, Selvaraju Sudhakar, Jonathan Burns, Bonginkosi Chiliza, INTREPID Group, Alex Cohen, Oye Gureje, Rangaswamy Thara, Robin M. Murray, Craig Morgan, Gerard Hutchinson
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- Journal:
- Psychological Medicine / Volume 53 / Issue 15 / November 2023
- Published online by Cambridge University Press:
- 23 March 2023, pp. 7062-7069
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Background
Cannabis use has been linked to psychotic disorders but this association has been primarily observed in the Global North. This study investigates patterns of cannabis use and associations with psychoses in three Global South (regions within Latin America, Asia, Africa and Oceania) settings.
MethodsCase–control study within the International Programme of Research on Psychotic Disorders (INTREPID) II conducted between May 2018 and September 2020. In each setting, we recruited over 200 individuals with an untreated psychosis and individually-matched controls (Kancheepuram India; Ibadan, Nigeria; northern Trinidad). Controls, with no past or current psychotic disorder, were individually-matched to cases by 5-year age group, sex and neighbourhood. Presence of psychotic disorder assessed using the Schedules for Clinical Assessment in Neuropsychiatry and cannabis exposure measured by the World Health Organisation Alcohol, Smoking and Substance Involvement Screening Test (ASSIST).
ResultsCases reported higher lifetime and frequent cannabis use than controls in each setting. In Trinidad, cannabis use was associated with increased odds of psychotic disorder: lifetime cannabis use (adj. OR 1.58, 95% CI 0.99–2.53); frequent cannabis use (adj. OR 1.99, 95% CI 1.10–3.60); cannabis dependency (as measured by high ASSIST score) (adj. OR 4.70, 95% CI 1.77–12.47), early age of first use (adj. OR 1.83, 95% CI 1.03–3.27). Cannabis use in the other two settings was too rare to examine associations.
ConclusionsIn line with previous studies, we found associations between cannabis use and the occurrence and age of onset of psychoses in Trinidad. These findings have implications for strategies for prevention of psychosis.
Urbanicity and rates of untreated psychotic disorders in three diverse settings in the Global South
- Tessa Roberts, Ezra Susser, Joni Lee Pow, Casswina Donald, Sujit John, Vijaya Raghavan, Olatunde Ayinde, Bola Olley, Georgina Miguel Esponda, Joseph Lam, Robin M. Murray, Alex Cohen, Helen A. Weiss, Gerard Hutchinson, Rangaswamy Thara, Oye Gureje, Jonathan Burns, INTREPID Group, Craig Morgan
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- Journal:
- Psychological Medicine / Volume 53 / Issue 14 / October 2023
- Published online by Cambridge University Press:
- 16 January 2023, pp. 6459-6467
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Background
Extensive evidence indicates that rates of psychotic disorder are elevated in more urban compared with less urban areas, but this evidence largely originates from Northern Europe. It is unclear whether the same association holds globally. This study examined the association between urban residence and rates of psychotic disorder in catchment areas in India (Kancheepuram, Tamil Nadu), Nigeria (Ibadan, Oyo), and Northern Trinidad.
MethodsComprehensive case detection systems were developed based on extensive pilot work to identify individuals aged 18–64 with previously untreated psychotic disorders residing in each catchment area (May 2018–April/May/July 2020). Area of residence and basic demographic details were collected for eligible cases. We compared rates of psychotic disorder in the more v. less urban administrative areas within each catchment area, based on all cases detected, and repeated these analyses while restricting to recent onset cases (<2 years/<5 years).
ResultsWe found evidence of higher overall rates of psychosis in more urban areas within the Trinidadian catchment area (IRR: 3.24, 95% CI 2.68–3.91), an inverse association in the Nigerian catchment area (IRR: 0.68, 95% CI 0.51–0.91) and no association in the Indian catchment area (IRR: 1.18, 95% CI 0.93–1.52). When restricting to recent onset cases, we found a modest positive association in the Indian catchment area.
ConclusionsThis study suggests that urbanicity is associated with higher rates of psychotic disorder in some but not all contexts outside of Northern Europe. Future studies should test candidate mechanisms that may underlie the associations observed, such as exposure to violence.
Chapter 46 - Comparing and Contrasting the Approach to Advance Care Planning in Multiple Sclerosis
- from Section 6 - Demyelinating Diseases and Autoimmune Neurology
- Edited by Maisha T. Robinson
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- Case Studies in Neuropalliative Care
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- 08 June 2018
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- 28 June 2018, pp 158-160
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- By John Andrzejowski, Joseph E. Arrowsmith, Sam Bass, Clare Bates, Dominic Bell, David Bogod, Tim M. Cook, Mike Coupe, Mark Dougherty, Derek Duane, Peter Faber, Fay J. Gilder, Helen Goddard, Tom Holmes, Victoria Howell, James Hoyle, Aoibhin Hutchinson, Alison Kavanagh, Andrew A. Klein, Nick Lees, Benias Mugabe, Jurgens Nortje, Felicity Plaat, Saxon Ridley, Andrew Roscoe, Martin Shields, Alistair Steel, Jane Sturgess, Rajinikanth Sundararajan, Kasia Szypula, Dafydd Thomas, Hamish Thomson, Kamen Valchanov, A. James Varley, Stephen T. Webb, Matt Wilkner, Nick Woodall
- Edited by Kamen Valchanov, Stephen T. Webb, Jane Sturgess
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- Anaesthetic and Perioperative Complications
- Published online:
- 07 October 2011
- Print publication:
- 22 September 2011, pp ix-x
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- By Rose Teteki Abbey, K. C. Abraham, David Tuesday Adamo, LeRoy H. Aden, Efrain Agosto, Victor Aguilan, Gillian T. W. Ahlgren, Charanjit Kaur AjitSingh, Dorothy B E A Akoto, Giuseppe Alberigo, Daniel E. Albrecht, Ruth Albrecht, Daniel O. Aleshire, Urs Altermatt, Anand Amaladass, Michael Amaladoss, James N. Amanze, Lesley G. Anderson, Thomas C. Anderson, Victor Anderson, Hope S. Antone, María Pilar Aquino, Paula Arai, Victorio Araya Guillén, S. Wesley Ariarajah, Ellen T. Armour, Brett Gregory Armstrong, Atsuhiro Asano, Naim Stifan Ateek, Mahmoud Ayoub, John Alembillah Azumah, Mercedes L. García Bachmann, Irena Backus, J. Wayne Baker, Mieke Bal, Lewis V. Baldwin, William Barbieri, António Barbosa da Silva, David Basinger, Bolaji Olukemi Bateye, Oswald Bayer, Daniel H. Bays, Rosalie Beck, Nancy Elizabeth Bedford, Guy-Thomas Bedouelle, Chorbishop Seely Beggiani, Wolfgang Behringer, Christopher M. Bellitto, Byard Bennett, Harold V. Bennett, Teresa Berger, Miguel A. Bernad, Henley Bernard, Alan E. Bernstein, Jon L. Berquist, Johannes Beutler, Ana María Bidegain, Matthew P. Binkewicz, Jennifer Bird, Joseph Blenkinsopp, Dmytro Bondarenko, Paulo Bonfatti, Riet en Pim Bons-Storm, Jessica A. Boon, Marcus J. Borg, Mark Bosco, Peter C. Bouteneff, François Bovon, William D. Bowman, Paul S. Boyer, David Brakke, Richard E. Brantley, Marcus Braybrooke, Ian Breward, Ênio José da Costa Brito, Jewel Spears Brooker, Johannes Brosseder, Nicholas Canfield Read Brown, Robert F. Brown, Pamela K. Brubaker, Walter Brueggemann, Bishop Colin O. Buchanan, Stanley M. Burgess, Amy Nelson Burnett, J. Patout Burns, David B. Burrell, David Buttrick, James P. Byrd, Lavinia Byrne, Gerado Caetano, Marcos Caldas, Alkiviadis Calivas, William J. Callahan, Salvatore Calomino, Euan K. Cameron, William S. Campbell, Marcelo Ayres Camurça, Daniel F. Caner, Paul E. Capetz, Carlos F. Cardoza-Orlandi, Patrick W. Carey, Barbara Carvill, Hal Cauthron, Subhadra Mitra Channa, Mark D. Chapman, James H. Charlesworth, Kenneth R. Chase, Chen Zemin, Luciano Chianeque, Philip Chia Phin Yin, Francisca H. Chimhanda, Daniel Chiquete, John T. Chirban, Soobin Choi, Robert Choquette, Mita Choudhury, Gerald Christianson, John Chryssavgis, Sejong Chun, Esther Chung-Kim, Charles M. A. Clark, Elizabeth A. Clark, Sathianathan Clarke, Fred Cloud, John B. Cobb, W. Owen Cole, John A Coleman, John J. Collins, Sylvia Collins-Mayo, Paul K. Conkin, Beth A. Conklin, Sean Connolly, Demetrios J. Constantelos, Michael A. Conway, Paula M. Cooey, Austin Cooper, Michael L. Cooper-White, Pamela Cooper-White, L. William Countryman, Sérgio Coutinho, Pamela Couture, Shannon Craigo-Snell, James L. Crenshaw, David Crowner, Humberto Horacio Cucchetti, Lawrence S. Cunningham, Elizabeth Mason Currier, Emmanuel Cutrone, Mary L. Daniel, David D. Daniels, Robert Darden, Rolf Darge, Isaiah Dau, Jeffry C. Davis, Jane Dawson, Valentin Dedji, John W. de Gruchy, Paul DeHart, Wendy J. Deichmann Edwards, Miguel A. De La Torre, George E. Demacopoulos, Thomas de Mayo, Leah DeVun, Beatriz de Vasconcellos Dias, Dennis C. Dickerson, John M. Dillon, Luis Miguel Donatello, Igor Dorfmann-Lazarev, Susanna Drake, Jonathan A. Draper, N. Dreher Martin, Otto Dreydoppel, Angelyn Dries, A. J. Droge, Francis X. D'Sa, Marilyn Dunn, Nicole Wilkinson Duran, Rifaat Ebied, Mark J. Edwards, William H. Edwards, Leonard H. Ehrlich, Nancy L. Eiesland, Martin Elbel, J. Harold Ellens, Stephen Ellingson, Marvin M. Ellison, Robert Ellsberg, Jean Bethke Elshtain, Eldon Jay Epp, Peter C. Erb, Tassilo Erhardt, Maria Erling, Noel Leo Erskine, Gillian R. Evans, Virginia Fabella, Michael A. Fahey, Edward Farley, Margaret A. Farley, Wendy Farley, Robert Fastiggi, Seena Fazel, Duncan S. Ferguson, Helwar Figueroa, Paul Corby Finney, Kyriaki Karidoyanes FitzGerald, Thomas E. FitzGerald, John R. Fitzmier, Marie Therese Flanagan, Sabina Flanagan, Claude Flipo, Ronald B. Flowers, Carole Fontaine, David Ford, Mary Ford, Stephanie A. Ford, Jim Forest, William Franke, Robert M. Franklin, Ruth Franzén, Edward H. Friedman, Samuel Frouisou, Lorelei F. Fuchs, Jojo M. Fung, Inger Furseth, Richard R. Gaillardetz, Brandon Gallaher, China Galland, Mark Galli, Ismael García, Tharscisse Gatwa, Jean-Marie Gaudeul, Luis María Gavilanes del Castillo, Pavel L. Gavrilyuk, Volney P. Gay, Metropolitan Athanasios Geevargis, Kondothra M. George, Mary Gerhart, Simon Gikandi, Maurice Gilbert, Michael J. Gillgannon, Verónica Giménez Beliveau, Terryl Givens, Beth Glazier-McDonald, Philip Gleason, Menghun Goh, Brian Golding, Bishop Hilario M. Gomez, Michelle A. Gonzalez, Donald K. Gorrell, Roy Gottfried, Tamara Grdzelidze, Joel B. Green, Niels Henrik Gregersen, Cristina Grenholm, Herbert Griffiths, Eric W. Gritsch, Erich S. Gruen, Christoffer H. Grundmann, Paul H. Gundani, Jon P. Gunnemann, Petre Guran, Vidar L. Haanes, Jeremiah M. Hackett, Getatchew Haile, Douglas John Hall, Nicholas Hammond, Daphne Hampson, Jehu J. Hanciles, Barry Hankins, Jennifer Haraguchi, Stanley S. Harakas, Anthony John Harding, Conrad L. Harkins, J. William Harmless, Marjory Harper, Amir Harrak, Joel F. Harrington, Mark W. Harris, Susan Ashbrook Harvey, Van A. Harvey, R. Chris Hassel, Jione Havea, Daniel Hawk, Diana L. Hayes, Leslie Hayes, Priscilla Hayner, S. Mark Heim, Simo Heininen, Richard P. Heitzenrater, Eila Helander, David Hempton, Scott H. Hendrix, Jan-Olav Henriksen, Gina Hens-Piazza, Carter Heyward, Nicholas J. Higham, David Hilliard, Norman A. Hjelm, Peter C. Hodgson, Arthur Holder, M. Jan Holton, Dwight N. Hopkins, Ronnie Po-chia Hsia, Po-Ho Huang, James Hudnut-Beumler, Jennifer S. Hughes, Leonard M. Hummel, Mary E. Hunt, Laennec Hurbon, Mark Hutchinson, Susan E. Hylen, Mary Beth Ingham, H. Larry Ingle, Dale T. Irvin, Jon Isaak, Paul John Isaak, Ada María Isasi-Díaz, Hans Raun Iversen, Margaret C. 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Rubenstein, Rosemary Radford Ruether, Markku Ruotsila, John E. Rybolt, Risto Saarinen, John Saillant, Juan Sanchez, Wagner Lopes Sanchez, Hugo N. Santos, Gerhard Sauter, Gloria L. Schaab, Sandra M. Schneiders, Quentin J. Schultze, Fernando F. Segovia, Turid Karlsen Seim, Carsten Selch Jensen, Alan P. F. Sell, Frank C. Senn, Kent Davis Sensenig, Damían Setton, Bal Krishna Sharma, Carolyn J. Sharp, Thomas Sheehan, N. Gerald Shenk, Christian Sheppard, Charles Sherlock, Tabona Shoko, Walter B. Shurden, Marguerite Shuster, B. Mark Sietsema, Batara Sihombing, Neil Silberman, Clodomiro Siller, Samuel Silva-Gotay, Heikki Silvet, John K. Simmons, Hagith Sivan, James C. Skedros, Abraham Smith, Ashley A. Smith, Ted A. Smith, Daud Soesilo, Pia Søltoft, Choan-Seng (C. S.) Song, Kathryn Spink, Bryan Spinks, Eric O. Springsted, Nicolas Standaert, Brian Stanley, Glen H. Stassen, Karel Steenbrink, Stephen J. Stein, Andrea Sterk, Gregory E. Sterling, Columba Stewart, Jacques Stewart, Robert B. Stewart, Cynthia Stokes Brown, Ken Stone, Anne Stott, Elizabeth Stuart, Monya Stubbs, Marjorie Hewitt Suchocki, David Kwang-sun Suh, Scott W. Sunquist, Keith Suter, Douglas Sweeney, Charles H. Talbert, Shawqi N. Talia, Elsa Tamez, Joseph B. Tamney, Jonathan Y. Tan, Yak-Hwee Tan, Kathryn Tanner, Feiya Tao, Elizabeth S. Tapia, Aquiline Tarimo, Claire Taylor, Mark Lewis Taylor, Bishop Abba Samuel Wolde Tekestebirhan, Eugene TeSelle, M. Thomas Thangaraj, David R. Thomas, Andrew Thornley, Scott Thumma, Marcelo Timotheo da Costa, George E. “Tink” Tinker, Ola Tjørhom, Karen Jo Torjesen, Iain R. Torrance, Fernando Torres-Londoño, Archbishop Demetrios [Trakatellis], Marit Trelstad, Christine Trevett, Phyllis Trible, Johannes Tromp, Paul Turner, Robert G. Tuttle, Archbishop Desmond Tutu, Peter Tyler, Anders Tyrberg, Justin Ukpong, Javier Ulloa, Camillus Umoh, Kristi Upson-Saia, Martina Urban, Monica Uribe, Elochukwu Eugene Uzukwu, Richard Vaggione, Gabriel Vahanian, Paul Valliere, T. J. Van Bavel, Steven Vanderputten, Peter Van der Veer, Huub Van de Sandt, Louis Van Tongeren, Luke A. Veronis, Noel Villalba, Ramón Vinke, Tim Vivian, David Voas, Elena Volkova, Katharina von Kellenbach, Elina Vuola, Timothy Wadkins, Elaine M. Wainwright, Randi Jones Walker, Dewey D. Wallace, Jerry Walls, Michael J. Walsh, Philip Walters, Janet Walton, Jonathan L. Walton, Wang Xiaochao, Patricia A. Ward, David Harrington Watt, Herold D. Weiss, Laurence L. Welborn, Sharon D. Welch, Timothy Wengert, Traci C. West, Merold Westphal, David Wetherell, Barbara Wheeler, Carolinne White, Jean-Paul Wiest, Frans Wijsen, Terry L. Wilder, Felix Wilfred, Rebecca Wilkin, Daniel H. Williams, D. Newell Williams, Michael A. Williams, Vincent L. Wimbush, Gabriele Winkler, Anders Winroth, Lauri Emílio Wirth, James A. Wiseman, Ebba Witt-Brattström, Teofil Wojciechowski, John Wolffe, Kenman L. Wong, Wong Wai Ching, Linda Woodhead, Wendy M. Wright, Rose Wu, Keith E. Yandell, Gale A. Yee, Viktor Yelensky, Yeo Khiok-Khng, Gustav K. K. Yeung, Angela Yiu, Amos Yong, Yong Ting Jin, You Bin, Youhanna Nessim Youssef, Eliana Yunes, Robert Michael Zaller, Valarie H. Ziegler, Barbara Brown Zikmund, Joyce Ann Zimmerman, Aurora Zlotnik, Zhuo Xinping
- Edited by Daniel Patte, Vanderbilt University, Tennessee
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- The Cambridge Dictionary of Christianity
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- 05 August 2012
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- 20 September 2010, pp xi-xliv
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Land Restoration in Britain—by Nature and by Man
- Joseph Hutchinson
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- Environmental Conservation / Volume 1 / Issue 1 / Spring 1974
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- 24 August 2009, pp. 37-41
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To sum up, the dereliction of industrially damaged land will be overcome by the natural processes of weathering, erosion, and leaching, moderated selectively by the influence of vegetation. Old pit-dumps in the Forest of Dean, ancient quarries as at Barnack in Lincolnshire, and the old peat diggings that now constitute the Norfolk Broads, all bear witness to the healing of man-inflicted destruction, given time. But in such a small country as Britain, with such a crowded population, we cannot leave these damaged areas for a sufficient length of time to heal naturally. Instead, we can, and we must—in the interests of health, good living, and the conservation of our assets in land—minimize the destruction which we leave behind, and ensure the conditions under which natural processes will most effectively and most speedily repair such damage as we cannot repair ourselves. So we must establish a landform appropriate to the use to which the land is to be put. We must ensure the adequacy of mineral nutrients for the soil which we wish to regenerate. And we must establish a vegetation that will contribute to those soil-forming processes whereby toxic elements are leached and nutrients retained.
Two outbreaks of Legionnaires' disease in Bolton Health District
- E. Mitchell, M. O'Mahony, J. M. Watson, D. Lynch, C. Joseph, C. Quigley, R. Aston, G. N. Constable, R. J. Farrand, S. Maxwell, D. N. Hutchinson, J. Craske, J. V. Lee
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- Epidemiology & Infection / Volume 104 / Issue 2 / April 1990
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- 15 May 2009, pp. 159-170
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In 1988, there were two outbreaks of legionellosis in Bolton Health District. Altogether 37 cases of Legionnaires' disease and 23 cases of non-pneumonic legionellosis were identified. Twenty-five patients with Legionnaires' disease were associated with an engineering plant, 4 with Bolton town centre, and 8 with both the plant and town centre. Twenty-two people with non-pneumonic legionellosis were linked with the engineering plant and one with the plant and the town centre. A case-control study carried out among 37 employees with legionellosis and 109 control subjects at the plant showed that infection was associated with one of the 15 cooling towers on the site. Legionella pneumophila indistinguishable by serological and genetic typing methods was isolated from this cooling tower and from sputum samples from two patients. In the town centre, no one tower was linked with infection and L. pneumophila was not cultured from any of the nine towers identified. Control measures were implemented and to date there have been no further cases of legionellosis associated with Bolton Health District.
Contributors
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- By Gareth Allen, Rowan Burnstein, Mick Cafferkey, Joseph Carter, Jonathan Cole, Giles Critchley, Marek Czosnyka, Egidio J. da Silva, Bruce Downey, Susan Dutch, Jonathan J. Evans, Peter Farling, Judith Fewings, Clare N. Gallagher, Helen M. K. Gooday, Arun K. Gupta, Adel Helmy, Camilla Herbert, David A. Hilton, Peter J. Hutchinson, Roisin Jack, Thérèse Jackson, Deva S. Jeyaretna, Peter J. Kirkpatrick, W. Hiu Lam, Fiona Lecky, Paul McArdle, Duncan McAuley, William W. McKinlay, Chris Maimaris, Alexander R. Manara, Anjum Memon, Patrick Mitchell, H. C. Patel, Brian Pentland, Puneet Plaha, Ann-Marie Pringle, Richard Protheroe, Heinke Pülhorn, Robert Redfern, Jane V. Russell, Ayan Sen, Martin Smith, Fiona Summers, Matthew J. C. Thomas, Elfyn O. Thomas, I. Timofeev, Lorna Torrens, Rikin A. Trivedi, Martin B. Walker, Laurence Watkins, Ruwan Alwis Weerakkody, Peter C. Whitfield, Maggie Whyte, Maralyn Woodford
- Edited by Peter C. Whitfield, Elfyn O. Thomas, Fiona Summers, Maggie Whyte, Peter J. Hutchinson
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- Head Injury
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- 09 April 2009, pp ix-xii
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Crop water requirements of cotton
- Joseph Hutchinson, H. L. Manning, H. G. Farbrother
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- The Journal of Agricultural Science / Volume 51 / Issue 2 / October 1958
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- 27 March 2009, pp. 177-188
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1. Attention is drawn to the enormous variations in yield experienced in commercial cotton growing under rain-fed conditions. Yields at Namulonge have ranged from 161 to 1163 lb./acre.
2. In seeking an explanation of this enormous variation past and present fertilizer trials in Uganda have failed to show that much of this variation is due to nutrient status.
3. From Manning's previous analysis of yields in relation to seasonal rainfall, over many district trials, it is evident that 20–25 in. of rainfall per season is optimum.
4. The purpose of more recent studies has been to examine the effect of distribution of rainfall within the season. Clearly the pattern of crop water requirement, also within the season, must supersede a simple seasonal concept of crop water use.
5. Experimental evidence, based on several seasons' data, led to the conclusion that evapotranspiration rates exceeding the commonly accepted figure of 0·8E must in fact occur in order to provide a satisfactory explanation of results recorded.
6. The within-season pattern of water requirement of an annual arable crop is shown to be more dependent on its state of development than on the pattern of a physical model based on calculations of energy availability.
Genetic Diversity and Agricultural Potential in Phaseolus vulgaris L
- George Froussios, Joseph Hutchinson
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- Experimental Agriculture / Volume 6 / Issue 2 / April 1970
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- 03 October 2008, pp. 129-141
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To assess the potentialities of Ph. vulgaris for haricot type bean production in Britain, a large collection of types was surveyed. One hundred varieties, mostly but not exclusively bush types, were grown both in the greenhouse and in the field. Characters of agronomic importance were evaluated. The morphological basis of the difference between the climbing and the bush habit was shown to be the interaction between two character contrasts, indeterminate versus determinate vegetative growth, and long versus short internodes. The four classes resulting from this interaction were identified and are described. Flowering habit, pod type and seed size were surveyed. Among the bush beans, wide variation in day length sensitivity in flowering was shown, and it is clear that day length neutral types can easily be selected. Among the determinate dwarfs, pods are either leathery or fleshy. Leathery types dry out readily, and do not dehisce freely in the field, and are therefore agronomically desirable in dry bean production. Fleshy pods are used for culinary purposes. The indeterminate bush types included in this survey have parchmented pods, which tend to dehisce when dry, and hence are subject to crop loss in the field. A wide range of seed size and seed colour is available for selection according to requirement. Two small variety trials yielded evidence that Colombian determinate bush types grow and crop satisfactorily within the limits of the growing season in eastern England. From two spacing trials, optimum within-row spacing was deduced.
Changing Concepts in Crop Plant Evolution*
- Sir Joseph Hutchinson
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- Journal:
- Experimental Agriculture / Volume 7 / Issue 4 / October 1971
- Published online by Cambridge University Press:
- 03 October 2008, pp. 273-280
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Evolutionary studies in the cottons began with the demonstration by Harland that true cottons could be divided into four genetically distinct species, each carrying an internally balanced genotype that was disrupted in crosses with any other. Harland's genetic classification has stood the test of time, and contributes substantially to our understanding of speciation in other genera, as for example, Phaseolus. In addition, it provides a genetic basis for the observations described by Anderson as ‘introgression’.
Studies of cottons found growing wild, and of their relationship to cultivars in the same areas, led to the hypothesis that all true cottons are cultivars, and those now found wild are escapes. This hypothesis, though it led to purposeful exploration of the distribution and relationships of the cottons, was found to be inadequate. A new approach to the relationships of the cottons became possible following Thoday's demonstration of ‘disruptive selection’ in Drosophila. The disruptive situation has been shown to obtain as between cultivars and their wild relatives in Sorghum and in a number of other crop plants.
Consideration of the time scale of agricultural evolution makes it clear that the recent origin theory is untenable, and a review of the status of the ‘wild’ cottons shows that they are adequately accounted for as weedy relatives of the cultivars, descended from common wild ancestors under disruptive selection.
It is concluded that crop plant evolution has gone on very largely within the balanced gene pools which Harland regarded as genetic species.
Common structural features of MAPEG— A widespread superfamily of membrane associated proteins with highly divergent functions in eicosanoid and glutathione metabolism
- PER-JOHAN JAKOBSSON, RALF MORGENSTERN, JOSEPH MANCINI, ANTHONY FORD-HUTCHINSON, BENGT PERSSON
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- Journal:
- Protein Science / Volume 8 / Issue 3 / March 1999
- Published online by Cambridge University Press:
- 01 March 1999, pp. 689-692
- Print publication:
- March 1999
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A novel superfamily designated MAPEG (Membrane Associated Proteins in Eicosanoid and Glutathione metabolism), including members of widespread origin with diversified biological functions is defined according to enzymatic activities, sequence motifs, and structural properties. Two of the members are crucial for leukotriene biosynthesis, and three are cytoprotective exhibiting glutathione S-transferase and peroxidase activities. Expression of the most recently recognized member is strongly induced by p53, and may therefore play a role in apoptosis or cancer development. In spite of the different biological functions, all six proteins demonstrate common structural characteristics typical of membrane proteins. In addition, homologues are identified in plants, fungi, and bacteria, demonstrating this superfamily to be generally occurring.
Laser Performance and Material Properties of a High Temperature Plastic Doped with Pyrromethene-BF2 Dyes
- Toomas H. Allik, Suresh Chandra, Timothy R. Robinson, J. Andrew Hutchinson, Govindarao Sathyamoorthi, Joseph H. Boyer
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- Journal:
- MRS Online Proceedings Library Archive / Volume 329 / 1993
- Published online by Cambridge University Press:
- 15 February 2011, 291
- Print publication:
- 1993
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Four pyrromethene-BF2 visible laser dyes, dissolved in a MIL-STD tested high temperature polymer matrix and pumped with a doubled Nd:YAG laser produced 61 % slope efficiency and retained 78% of the initial lasing efficiency after 95,000 pulses.
Preface
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- By Joseph Hutchinson, St John's College, Cambridge
- Edited by Tim Bayliss-Smith, Sudhir Wanmali
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- Book:
- Understanding Green Revolutions
- Published online:
- 25 May 2010
- Print publication:
- 03 May 1984, pp ix-x
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Summary
This volume is a tribute by his students and colleagues, to B.H. Farmer on his retirement as Reader in South Asian Geography and Director of the Centre of South Asian Studies in the University of Cambridge. The essays it contains are evidence of the esteem and affection in which he is held. Moreover their content bears the stamp of his critical and encouraging guidance. It is not the function of a preface to enlarge upon them. They speak for themselves.
This is, however, an opportunity to record something of Farmer's influence on geographical studies in Cambridge. My first experience of his work came when I was asked to review his Pioneer Peasant Colonisation in Ceylon. Coming from East Africa where the term ‘dry zone’ would be interpreted as an area with an uncertain rainfall averaging perhaps 400 mm a year, I was immediately struck by his use of ‘dry zone’ to embrace areas with a very high (though seasonal) rainfall. It was an indication of his powers as a writer and a teacher that I found his exposition conclusive, and thereby widened my concept of the relations between climate, season and soil.
I regarded Farmer at that time as a specialist on Sri Lanka. The opportunity for him to widen his horizons, and to develop research and teaching interests throughout the subcontinent of India, came in 1961 with the allocation to Cambridge University of resources to develop modern studies of some of the major cultural regions of the world. To Ben Farmer fell the task of establishing the Centre of South Asian Studies.