Dennis Francis

ORCID: 0000-0001-6353-4120
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About
Contact & Profiles
Research Areas
  • Plant Molecular Biology Research
  • LGBTQ Health, Identity, and Policy
  • Gender Roles and Identity Studies
  • Plant Reproductive Biology
  • Plant tissue culture and regeneration
  • African Sexualities and LGBTQ+ Issues
  • Plant nutrient uptake and metabolism
  • Adolescent Sexual and Reproductive Health
  • Plant Stress Responses and Tolerance
  • Plant Genetic and Mutation Studies
  • Plant and animal studies
  • Flowering Plant Growth and Cultivation
  • Plant Physiology and Cultivation Studies
  • Aluminum toxicity and tolerance in plants and animals
  • Chromosomal and Genetic Variations
  • Light effects on plants
  • HIV/AIDS Research and Interventions
  • Photosynthetic Processes and Mechanisms
  • Plant Taxonomy and Phylogenetics
  • Plant Parasitism and Resistance
  • Microtubule and mitosis dynamics
  • Plant Micronutrient Interactions and Effects
  • Poverty, Education, and Child Welfare
  • Children's Rights and Participation
  • Plant responses to water stress

Oldham Council
2025

Stellenbosch University
2016-2024

University of Glasgow
2023-2024

Cardiff University
2008-2021

Imperial College London
2020

Imperial College Healthcare NHS Trust
2020

Shenyang University
2015-2017

University of KwaZulu-Natal
2005-2015

University of the Free State
2010-2014

University of Wales
1991-2011

This paper reports on research with 11 high school teachers in Durban and draws positioning theory to raise important questions the teaching of issues relating homosexuality bisexuality within sexuality education. Using data collected from classroom observations in-depth interviews, it demonstrates that related sexual diversity were most cases ignored or avoided by when did include aspects homosexuality, they took up positions endorsed idea 'compulsory heterosexuality'. I conclude paying...

10.1080/13691058.2012.674558 article EN Culture Health & Sexuality 2012-05-11

This article, a critical review of module on heterosexism and homophobia, sets out the challenges to be overcome if oppressive conditions for lesbian, gay, bisexual students teachers in South Africa are changed. It draws evidence from student assignments, records participatory discussions notes authors, who taught module. The authors argue that methods used this course essential become agents change. However, these need linked clear coherent theoretical foundation enables draw links between...

10.1080/19361653.2011.553713 article EN Journal of LGBT Youth 2011-03-29

10.1023/a:1010762111585 article EN Plant Growth Regulation 2001-01-01

When Xenopus eggs and egg extracts replicate DNA, replication origins are positioned randomly with respect to DNA sequence. However, a completely random distribution of would generate some unacceptably large interorigin distances. We have investigated the in sperm nuclei replicating extract. Replicating was labeled [(3)H]thymidine or bromodeoxyuridine geometry sites on spread examined. Most were spaced 5-15 kb apart. This regular provides an explanation for how complete chromosome can be...

10.1083/jcb.152.1.15 article EN The Journal of Cell Biology 2001-01-08

In published studies, positive relationships between nucleotype and the duration of mitotic cell cycle in angiosperms have been reported but highest number species analyzed was approx. 60. Here an analysis is presented DNA C-values times root apical meristems comprising 110 measurements, including monocots eudicots within a set temperature range, encompassing 290-fold variation C-values. Data for seedlings grown at temperatures 20–25 °C were compared with (58 values 52 eudicots). Regression...

10.1093/aob/mcn038 article EN Annals of Botany 2008-03-13

10.1016/j.ijedudev.2009.12.003 article EN International Journal of Educational Development 2010-01-01

10.1016/0968-0004(90)90240-c article EN Trends in Biochemical Sciences 1990-10-01

S ummary Seedlings of a zinc tolerant cultivar (Merlin) and non‐tolerant (S59) Festuca rubra L. were grown in aerated solution culture at various concentrations zinc. The elongation the longest root was much more inhibited by increasing Zn concentration S59 than Merlin. mitotic index meristem reduced to greater extent Merlin, whilst cell doubling time (estimated colchicine arrest) increased kinetics cycle determined pulse labelling experiment with low specific activity tritiated thymidine...

10.1111/j.1469-8137.1986.tb00819.x article EN New Phytologist 1986-03-01

Although South Africa is one of the most progressive countries in world terms constitutional and legislative rights for LGBT individuals, education many social arenas where these ideals are not carried out. Interviews with 25 practicing teachers revealed very little description practice, but widely divergent understandings around sexual diversity that drew on various authoritative discourses, including religious teachings, educational policy, science, powerful human framework African...

10.1080/00918369.2014.951256 article EN Journal of Homosexuality 2014-08-04

The stakes are high for sex education in South Africa: it has been estimated that 8.7% of young people live with HIV. Within primarily US and UK contexts, there much debate over the relative merits abstinence-only comprehensive sexual programmes. These perspectives have largely presented as irreconcilable, but in-depth interviews 25 life orientation teachers across Free State Province Africa reveal may attempt to reconcile aspects two into a hybridised perspective. They promote abstinence...

10.1080/14681811.2013.833091 article EN Sex Education 2013-09-30

AbstractPost-apartheid, South Africa has come a long way in making the inclusion of gender and sexuality equality explicit its Constitution. To make schools more inclusive for lesbian, gay, bisexual, transgender, intersex queer (LGBTIQ+) identifying learners, Department Basic Education developed what it claims are Africa's first guidelines regarding sexual orientation, identity sex characteristics (SOGIESC). Despite emphasis on post-apartheid policies, which set out to protect rights LGBTIQ+...

10.1080/13691058.2023.2195913 article EN Culture Health & Sexuality 2023-04-05

Health sovereignty – the assertion of rights to culturally and ecologically appropriate medicines ability communities structure their own healthcare is a biopolitical goal Rastafari movement. We examine how health enacted by herbalists in south London contributions these healers make UK, particularly for migrants disenfranchised "hostile environment" immigration policies. Using ethnographic data on "bitters" "roots tonics" we show herbal are used clientele achieve key political spiritual...

10.1080/01459740.2025.2471092 article EN cc-by-nc-nd Medical Anthropology 2025-02-27

Abstract. The effect of Zn on vacuole development in root meristematic cells was examined three cultivars Festuca rubra : a Zn‐tolerant cultivar (Merlin), salt‐tolerant (Hawk) and non‐tolerant (S.59) order to determine whether or not related tolerance. Treatment with greatly increased the percentage apical meristem which were vacuolated all (7.01‐fold increase Merlin, 3.61‐fold Hawk 5.39‐fold S.59 over range 0–0.5 μg cm −3 ). Morphometric analyses electromicrographs indicated that total...

10.1111/j.1365-3040.1991.tb00949.x article EN Plant Cell & Environment 1991-05-01
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