Men on the margins? Reflections on recruiting and engaging men in reproduction research

Open access articleWhile social science research into reproduction is a vibrant and growing field of scholarly activity, the majority of research is conducted with women and focusses on women’s lives. Reproduction research which does focus on men tends to overlook aspects such as pre-conception desires for parenthood and planning. Scholars have argued for a greater inclusion of men in reproduction research, yet there is a paucity of methodological literature addressing how best to do so. This paper reports methodological reflections from a qualitative study into men’s perceptions and intentions regarding the ‘right time’ to have children. It does this in reference to Critical Studies of Men and Masculinities (CSM) - which foregrounds men as gendered beings and comprises the study of the gendered nature of men’s lives - as both a theoretical position influencing study conception and design, and as an explanatory framework for enhancing understanding of the research encounter. The first part of the paper describes the CSM-informed study conceptualisation and design, specifically the decisions to include unpartnered men in the sample and to address the absence of men in reproduction research in recruitment materials. It then goes on to discuss the most effective recruitment strategy employed, recruiting through informal gatekeepers, and to consider the consequences of this. The second part of the paper presents data from the male participants pertaining to their stated motivations for participating, which relate to interest, helpfulness, and in response to perceived marginalisation, as well as their reflections on the interview encounter as enabling them to construct a narrative. It aims to extend knowledge and understanding regarding engaging men in reproduction research and to illustrate the utility of CSM for doing so; and in doing so to advance both reproduction research as well as discussions of CSM and methodology more broadly

Biologically infallible? Men’s views on male age‐related fertility decline and sperm freezing

open access articleTrends in people having children later in life and increasing evidence of male age‐related fertility decline (ARFD) has led some to propose sperm freezing as a suitable response. However, little consideration has been given to how men might respond to such a proposal, and there has been a paucity of empirical data to inform such a consideration. This paper arises from in‐depth, semi‐structured interviews with men (n = 25) who do not have children but want or expect to have them in the future. Data on men’s perceptions of male ARFD and sperm freezing are presented and discussed in accordance with theoretical and conceptual tools relating to reproductive masculinity, biomedicalisation, gendered risk perception and meanings of sperm and masculinity. It suggests that that men’s overall lack of concern regarding male ARFD and resistance towards ideas of sperm freezing result not only from a lack of exposure to evidence regarding male ARFD but are also shaped by ideals of reproductive masculinity, and may indicate resistance towards the idea of reproductive control. It argues that these positions perpetuate a gender unequal politicisation of ARFD and perpetuate particular gendered subjectivities relating to culpability and responsibility for guarding against risks of ARFD

A job well done: social enterprises and the learning and skills sector: a partnership for the education, training and employment of disabled people

http://readingroom.ypla.gov.uk/ypla/170910_a_job_well_done_final.pd

Plant Diversity and Plant Performance of Indoor and Outdoor Vertical Greening Systems in Hong Kong

This study aimed to examine the plant diversity and plant performance of vertical greening system (VGS) and how the hardware setup (including growing substrates) potentially affect plant performance. A total of 125 VGS (including 85 outdoor and 40 indoor VGS) were surveyed in Hong Kong. We recorded the type of VGS, species composition, frequency and plant coverage; substrate medium type, and plant performance. The findings revealed that indoor soilless VGS performed comparably well as on conventional soil, and outdoor soilless VGS performed significantly better than on soil. Regardless of substrate type, plants on indoor VGS performed better than outdoor VGS. Keywords: Vertical greening system; Floristic composition; Growing medium; Plant performance eISSN: 2398-4287© 2020. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. DOI: https://doi.org/10.21834/ebpj.v5i14.226

Low-frequency electronic noise in superlattice and random-packed thin films of colloidal quantum dots

We report measurements of low-frequency electronic noise in ordered superlattice, weakly-ordered and random-packed thin films of 6.5 nm PbSe quantum dots prepared using several different ligand chemistries. For all samples, the normalized noise spectral density of the dark current revealed a Lorentzian component, reminiscent of the generation-recombination noise, superimposed on the 1/f background (f is the frequency). An activation energy of 0.3 eV was extracted from the temperature dependence of the noise spectra. The noise level in the ordered films was lower than that in the weakly-ordered and random-packed films. A large variation in the magnitude of the noise spectral density was also observed in samples with different ligand treatments. The obtained results are important for application of colloidal quantum dot films in photodetectors.Comment: 24 pages, 6 figures and supplemental inf

Evaluation-perception of site attributes and plant species selection in the public urban green space of a compact city

Understanding citizens’ evaluation of public urban green space (UGS) attributes and plant species features can inform greenspace design to meet public expectations. This study evaluated the public’s responses to UGS attributes and plant species in Hong Kong using a questionnaire survey of 827 adult respondents. Principal component analysis followed by cluster analysis were applied to analyze the data. The respondents were differentiated into three groups (ecological, eclectic, and pragmatic users) based on the evaluations of UGS attributes. Additionally, three clusters (conservation supporters, all-round perfectionists, and safety defenders) were classified based on evaluating plant species features. Plant knowledge and gender were the main factors associated with respondents’ evaluation profiles. Respondents with different expectations of UGS attributes harbored different evaluations of plant species features. The respondent groups agreed unanimously that similar plant species composition was deployed across UGS sites in Hong Kong. Respondents attaching importance to the conservation value of plant species (i.e., “conservation supporters”) were more concerned about plant species selection. The conservation supporters were dissatisfied with the current plant selection strategy. A zonation strategy for large UGS could cater to a broad range of user demands and create a socially-inclusive venue for residents. Alternatively, a collection of small UGS in a given district can cover a range of functions. The findings could inform a modified approach to UGS design and plant selection to satisfy the residents’ disparate expectations and needs

Dynamic deformability of individual PbSe nanocrystals during superlattice phase transitions

The behavior of individual nanocrystals during superlattice phase transitions can profoundly affect the structural perfection and electronic properties of the resulting superlattices. However, details of nanocrystal morphological changes during superlattice phase transitions are largely unknown due to the lack of direct observation. Here, we report the dynamic deformability of PbSe semiconductor nanocrystals during superlattice phase transitions that are driven by ligand displacement. Real-time high-resolution imaging with liquid-phase transmission electron microscopy reveals that following ligand removal, the individual PbSe nanocrystals experience drastic directional shape deformation when the spacing between nanocrystals reaches 2 to 4 nm. The deformation can be completely recovered when two nanocrystals move apart or it can be retained when they attach. The large deformation, which is responsible for the structural defects in the epitaxially fused nanocrystal superlattice, may arise from internanocrystal dipole-dipole interactions

Tree species composition, growing space and management in Hong Kong’s commercial sky gardens

Sky gardens, a type of above-ground urban green space, have been increasingly welcomed and installed in cities. However, few studies have assessed tree planting, management and health in high-rise greenery. This study investigated tree species composition, planting space design and management, and their relationships with tree health in sky gardens in 15 commercial sky gardens with 480 trees in Hong Kong. We assessed the differences between old and new sites regarding tree species, height, crown diameter, and health. We also evaluated selected planting and management factors, including planter type, distance to neighbor trees, root-growth obstacles, canopy barriers, canopy overlap and topping history. Tree species selection in commercial sky gardens was substantially different from public and private residential green spaces. Older sky gardens had more palm trees by species and tree counts. Newer gardens had increased adoption of broadleaf and conifer species with high ornamental value and compact form but fewer native tree species and lower species diversity. The widely planted Ficus spp. had created long-term management issues. Trees were often densely planted, particularly in newer sky gardens. The common practice of topping indicates poor species selection and mismanagement. Planter types with insufficient growing space had dampened tree health. Our findings reveal the trend of tree species adoption, narrower planting spaces and wider adoption of the sunken planter. Improvements in species selection, growing space design and management practices could promote healthy, stable and safe trees in sky gardens with contributions to biodiversity and other ecosystem services

In Situ TEM Study of the Degradation of PbSe Nanocrystals in Air

PbSe nanocrystals have attracted widespread attention due to a variety of potential applications. However, the practical utility of these nanocrystals has been hindered by their poor air stability, which induces undesired changes in the optical and electronic properties. An understanding of the degradation of PbSe nanocrystals when they are exposed to air is critical for improving the stability and enhancing their applications. Here, we use in situ transmission electron microscopy (TEM) with an environmental cell connected to air to study PbSe nanocrystal degradation triggered by air exposure. We have also conducted a series of complementary studies, including in situ environmental TEM study of PbSe nanocrystals exposed to pure oxygen and PbSe nanocrystals in H2O using a liquid cell, and ex situ experiments, such as O2 plasma treatment and thermal heating of PbSe nanocrystals under different air exposure. Our in situ observations reveal that when PbSe nanocrystals are exposed to air (or oxygen) under electron beam irradiation, they experience a series of changes, including shape evolution of individual nanocrystals with the cuboid intermediates, coalescence between nanocrystals, and formation of PbSe thin films through drastic solid-state fusion. Further studies show that the PbSe thin films transform into an amorphous Pb rich phase or eventually pure Pb, which suggest that Se reacts with oxygen and can be evaporated under electron beam illumination. These various in situ and ex situ experimental results indicate that PbSe nanocrystal degradation in air is initiated by the dissociation and removal of ligands from the PbSe nanocrystal surface