Wellington UniVentures (New Zealand)

Organic photovoltaics (OPVs) promise cheap and flexible solar energy. Whereas light generates free charges in silicon photovoltaics, excitons are normally formed in organic semiconductors due to their low dielectric constants, and require molecular heterojunctions to split into charges. Recent record efficiency OPVs utilise the small molecule, Y6, and its analogues, which - unlike previous organic semiconductors - have low band-gaps and high dielectric constants. We show that, in Y6 films, these factors lead to intrinsic free charge generation without a heterojunction. Intensity-dependent spectroscopy reveals that 60-90% of excitons form free charges at AM1.5 light intensity. Bimolecular recombination, and hole traps constrain single component Y6 photovoltaics to low efficiencies, but recombination is reduced by small quantities of donor. Quantum-chemical calculations reveal strong coupling between exciton and CT states, and an intermolecular polarisation pattern that drives exciton dissociation. Our results challenge how current OPVs operate, and renew the possibility of efficient single-component OPVs.

Deep sea scleractinian corals will be particularly vulnerable to the effects of climate change, facing loss of up to 70% of their habitat as the Aragonite Saturation Horizon (below which corals are unable to form calcium carbonate skeletons) rises. Persistence of deep sea scleractinian corals will therefore rely on the ability of larvae to disperse to, and colonise, suitable shallow-water habitat. We used DNA sequence data of the internal transcribed spacer (ITS), the mitochondrial ribosomal subunit (16S) and mitochondrial control region (MtC) to determine levels of gene flow both within and among populations of the deep sea coral Desmophyllum dianthus in SE Australia, New Zealand and Chile to assess the ability of corals to disperse into different regions and habitats. We found significant genetic subdivision among the three widely separated geographic regions consistent with isolation and limited contemporary gene flow. Furthermore, corals from different depth strata (shallow <600 m, mid 1000-1500 m, deep >1500 m) even on the same or nearby seamounts were strongly differentiated, indicating limited vertical larval dispersal. Genetic differentiation with depth is consistent with the stratification of the Subantarctic Mode Water, Antarctic Intermediate Water, the Circumpolar Deep and North Pacific Deep Waters in the Southern Ocean, and we propose that coral larvae will be retained within, and rarely migrate among, these water masses. The apparent absence of vertical larval dispersal suggests deep populations of D. dianthus are unlikely to colonise shallow water as the aragonite saturation horizon rises and deep waters become uninhabitable. Similarly, assumptions that deep populations will act as refuges for shallow populations that are impacted by activities such as fishing or mining are also unlikely to hold true. Clearly future environmental management strategies must consider both regional and depth-related isolation of deep-sea coral populations.

Risk assessments are fundamental to invasive species management and are underpinned by comprehensive characterization of invasive species impacts. Our understanding of the impacts of invasive species is growing constantly, and several recently developed frameworks offer the opportunity to systematically categorize environmental and socioeconomic impacts of invasive species. Invasive ants are among the most widespread and damaging invaders. Although a handful of species receives most of the policy attention, nearly 200 species have established outside their native range. Here, we provide a global, comprehensive assessment of the impacts of ants and propose a priority list of risk species. We used the Socioeconomic Impact Classification for Alien Taxa (SEICAT), Environmental Impact Classification for Alien Taxa (EICAT) and Generic Impact Scoring System (GISS) to analyze 642 unique sources for 100 named species. Different methodologies provided generally consistent results. The most frequently identified socioeconomic impacts were to human health. Environmental impacts were primarily on animal and plant populations, with the most common mechanisms being predation and competition. Species recognized as harmful nearly 20 years ago featured prominently, including Wasmannia auropunctata (little fire ant, electric ant), Solenopsis invicta (red imported fire ant), Anoplolepis gracilipes (yellow crazy ant), and Pheidole megacephala (African big-headed ant). All these species except W. auropunctata have been implicated in local extinctions of native species. Although our assessments affirmed that the most serious impacts have been driven by a small number of species, our results also highlighted a substantial number of less well publicized species that have had major environmental impacts and may currently be overlooked when prioritizing prevention efforts. Several of these species were ranked as high or higher than some of the previously recognized "usual suspects," most notably Nylanderia fulva (tawny crazy ant). We compared and combined our assessments with trait-based profiles and other lists to propose a consensus set of 31 priority species. Ever-increasing global trade contributes to growing rates of species introductions. The integrated approaches we used can contribute to robust, holistic risk assessments for many taxa entrained in these pathways.

Crystalline lithium metasilicate (Li 2 SiO 3 ) nanoparticles have been synthesized using a sol–gel process with tetraethylorthosilicate and lithium ethoxide as precursors. The particle size examined by using transmission electron microscopy and BET‐specific surface area techniques is in the range 5–50 nm, depending on the temperature at which the material is calcined. The crystalline Li 2 SiO 3 forms at ambient temperature (∼40°C), and it remains in this phase after calcination at temperatures up to 850°C. The BET‐specific surface area is ∼110 m 2 /g for material calcined at temperatures below 500°C, decreasing to ∼29 and ∼0.7 m 2 /g following calcination at 700° and 850°C, respectively. Solid‐state 29 Si NMR spectroscopy shows the presence of only Q 2 structural units in the material. The lithium metasilicate is further characterized using differential scanning calorimetry and thermogravimetric analysis, and Fourier transform infrared spectroscopy.

Factors affecting the Multiplate® assay's analytical precision have not been well defined. We investigated the effect of methodological factors on the measurement of ADP-induced platelet aggregation using the Multiplate® assay. ADP-induced platelet aggregation was analysed in whole blood using the Multiplate® assay. We tested the reproducibility of measurement, the effect of different anticoagulants (hirudin, citrate and heparin) and the effect of time delay (15, 30, 45, 60, 120 and 180 minutes) between sampling and analysis in patients. The use of a manual calibrated pipette with the Multiplate® analyser was also tested. The mean coefficient of variation (CV) using the manufacturers recommended methods was 10.8 ± 8.7% (n = 30). When compared to hirudin (359.5 ± 309 AU*min) the use of heparin (521.0 ± 316 AU*min, p = 0.0015) increased platelet aggregation, while the use of sodium citrate (245.0 ± 209 AU*min, p = 0.003) decreased the platelet aggregation (n = 20). The addition of CaCl2 to the citrate-anticoagulated blood resulted in platelet aggregation levels similar to hirudin. Platelet aggregation varied with time delay (n = 20). When compared to platelet aggregation at 30 minutes (391.1 ± 283 AU*min), platelet aggregation was reduced at 60 minutes (335.2 ± 251.6 AU*min, p < 0.05), 120 minutes (198.8 ± 122.9 AU*min, p < 0.001) and 180 minutes (160.7 ± 92 AU*min, p < 0.001). The use of a manual calibrated pipette did not significantly reduce the mean CV in the assay (n = 20). Methodological factors such as the anticoagulant used and the time delay should be standardised where possible to reduce variability, and allow thresholds derived from one study to be comparable across multiple studies.

ABSTRACT The experiences of Māori and Pacific postgraduate students in STEM (Science, Technology, Engineering and Mathematics) offer insights into how universities, particularly science faculties, currently underserve Māori and Pacific people. This article shares the experiences of 43 current or past postgraduate students at New Zealand universities. Collectively, our stories offer insight into how representation, the white imprint, space invaders/stranger making, and institutional habits, specifically operate to exclude and devalue Māori and Pacific postgraduates in STEM. We provide new understandings of the white imprint (rewarding and incentivising white behaviour), where Māori and Pacific postgraduates were prevented from being their authentic selves. Importantly, this research documents how Māori and Pacific postgraduates experience excess labour because of institutional habits. This research also provides insight into how the science funding system results in superficial and unethical inclusion of Māori and Pacific postgraduates. Our stories provide persuasive evidence that the under‐representation of Māori and Pacific in STEM will not be addressed by simply bolstering university enrolments. Instead, our stories highlight the urgent requirement for universities to change the STEM learning environment which continues to be violent and culturally unsafe for Māori and Pacific postgraduates.

Abstract Addressing the multiple dimensions of gender inequality requires commitments by policy‐makers, practitioners and scholars to transformative practices. One challenge is to assemble a coherent conceptual framework from diverse knowledges and experiences. In this paper, we present a framework that emerged from our involvement in changing market culture in the P acific, which we name a radical empowerment of women approach. We draw on detailed narratives from women market vendors and women‐led new initiatives in marketplaces to explain this approach. We argue that the primary focus of recently developed projects for marketplaces in the P acific is technical and infrastructural, which is insufficient for addressing gendered political and economic causes of poor market management and oppressive conditions for women vendors. By exploring the complex array of motives and effects of the desire to transform or improve marketplaces in the P acific, we caution against simplistic technical or infrastructural solutions. This paper also introduces the practice of working as a cooperative, hybrid research collaboration. The knowledges and analyses that we bring to this issue demonstrate that substantive analysis generated from diverse and shifting ‘locations’ and roles, but underpinned by a shared vision of, and commitment to, gender justice, can provide distinctive policy and research insights.

A qualitative study by ChangeMakers Refugee Forum and the National Refugee Network of the experiences of 18 Convention refugees has highlighted that the standards of safety and protection that Aotearoa New Zealand is obliged to extend to Convention refugees are inadequately met; most notably that there is a significant disparity between United Nations High Commissioner for Refugees quota refugees and Convention refugees, despite there being no distinction between the two within the 1951 Refugee Convention. Themes relating to participants' experiences of destitution, discrimination, and the deterioration of their physical and mental health during the process of seeking asylum and protection emerged from the study. Lack of resources, information and insufficient policies amounts to a lack of security and protection for Convention refugees in Aotearoa New Zealand, revealing an environment where funding, collaboration, and political and public goodwill are minimal.

Cesium lead halide perovskite nanocrystals show great promise for optoelectronic applications due to their thermal stability, wide absorption range, and intense photoluminescence. These properties make CsPbX3 (X = Cl, Br, or I) nanocrystals great potential candidates for incorporation into light harvesting antenna complexes and photon multipliers via the coordination of organic chromophores as surface-bound ligands. In this paper, we demonstrate the synthesis of CsPbBr3 and CsPbI3 NCs and direct in situ attachment of anthracene-9-carboxylic acid ligands to their surface. Using steady-state and time-resolved fluorescence measurements, we show that CsPbX3–anthracene systems demonstrate energy transfer from the anthracene ligands via FRET with efficiencies as high as 40%.

Abstract: Whanganui Inlet, South Island, New Zealand, is a structurally controlled estuary where most of the accommodation space has been occupied by sediment and expanses of mud/sand flats are exposed at low tide. A flood‐tide delta extends 1.5 km from the entrance; however, both a mud basin and surfical fluvial deltas are absent from the inlet. Sedimentological and foraminiferal analysis of vibrocores from the inlet's southern half indicates that the intertidal flats accreted close to modern elevations soon after sea level flooding. The present surfical morphology of Whanganui Inlet therefore appears to be inherited from sedimentation that took place soon after sea level stabilized, with little deposition now occurring on the intertidal flats.

Scientific collections have been built by people. For hundreds of years, people have collected, studied, identified, preserved, documented and curated collection specimens. Understanding who those people are is of interest to historians, but much more can be made of these data by other stakeholders once they have been linked to the people's identities and their biographies. Knowing who people are helps us attribute work correctly, validate data and understand the scientific contribution of people and institutions. We can evaluate the work they have done, the interests they have, the places they have worked and what they have created from the specimens they have collected. The problem is that all we know about most of the people associated with collections are their names written on specimens. Disambiguating these people is the challenge that this paper addresses. Disambiguation of people often proves difficult in isolation and can result in staff or researchers independently trying to determine the identity of specific individuals over and over again. By sharing biographical data and building an open, collectively maintained dataset with shared knowledge, expertise and resources, it is possible to collectively deduce the identities of individuals, aggregate biographical information for each person, reduce duplication of effort and share the information locally and globally. The authors of this paper aspire to disambiguate all person names efficiently and fully in all their variations across the entirety of the biological sciences, starting with collections. Towards that vision, this paper has three key aims: to improve the linking, validation, enhancement and valorisation of person-related information within and between collections, databases and publications; to suggest good practice for identifying people involved in biological collections; and to promote coordination amongst all stakeholders, including individuals, natural history collections, institutions, learned societies, government agencies and data aggregators.

Ultrafast transient absorption spectroscopy is a powerful tool to reveal excited state dynamics in various materials. Conventionally, probe pulses are generated via bulk supercontinuum generation or (noncollinear) optical parametric amplifiers whilst pump pulses are generated separately using (noncollinear) optical parametric amplifiers. These systems are limited by either their spectral density, stability, spectral range, and/or temporal compressibility. Recently, a new intense broadband light source is being developed, the multi-plate compression, which promises to overcome these limitations. In this paper, we analyze the supercontinuum generated by a single Multiple Plate Compression system to set a benchmark for its use in the field of ultrafast pump-probe spectroscopy. We have compressed the supercontinuum to 3.3 fs using chirp mirrors alone, making it an excellent candidate for pump-probe experiments requiring high temporal resolution. Furthermore, the single light source can be used to generate both probe and pump pulses due to its high spectral density (>14.5 nJ/nm) between 490 and 890 nm. The intensity has an average shot-to-shot relative standard deviation of 4.6 % over 490 to 890 nm, calculated over 2,000 sequential shots. By using only 1,000 shot pairs, a [Formula: see text] noise level of [Formula: see text] RMS is achieved. Finally, as a proof of concept, the transient absorption spectrum of a methylammonium lead iodide perovskite film is taken, showing great signal to noise with only 1,000 shot pairs. These results show great potential for the employment of this technique in other spectroscopic techniques such as coherent multidimensional spectroscopy.

Abstract Controlling problem species for conservation can be fraught, particularly when native species are subject to lethal control. The noisy miner ( Manorina melanocephala ), has been the target of numerous lethal control efforts. Outcomes of these noisy miner removals have varied substantially, so identifying the circumstances under which they are effective is essential for ethical and effective management. We compiled data for all identified noisy miner removals ( n = 45), including both permit‐based and unofficial removals. We investigated whether methodological and ecological factors explained the effectiveness of removals in reducing noisy miner density or increasing woodland bird richness and abundance. The only predictor of any measure of success was time between first and final culls which was positively related to reduction in noisy miner density. Surprisingly, despite removals mainly failing to reduce noisy miner density to below a threshold above which noisy miners impact smaller birds, woodland birds usually still increased. Disrupted social structure as noisy miners recolonized may have led to less effective aggressive exclusion of small birds. Further removals may not need to reduce noisy miner density to below this threshold to benefit woodland birds, but consistent monitoring and reporting would support better evaluation of effectiveness and correlates of success.

INTRODUCTION Establishing the nurse practitioner (NP) workforce in New Zealand is a viable solution to health and workforce challenges in primary health care. General practices have been slow to implement NP services. Managers of general practices are central to the employment and development of NP roles. AIM To explore the perspectives of managers on employing NPs in general practice. METHODS An electronic survey was used to collect demographic and numerical data, which were analysed descriptively and analytically using SPSS (version 26). Written answers to open-ended questions were analysed qualitatively. RESULTS In total, 143 managers participated in the survey (response rate 39.7%); 54 (37.8%) worked in practices employing at least one NP. Of respondents, 88.9% (n = 127) agreed or strongly agreed that NPs could enhance continuity of care (89/143, 62.2%), improved access to services and medications (89/143, 62.2%) and filled a gap that added value to health care (97/143, 67.8%). Practices employing NPs had statistically significant higher levels of agreement about the advantages of NPs than practices not employing NPs. Challenges and enablers to employing NPs were themed under organisational environment, NP scope of practice and role, and NP workforce development. DISCUSSION This exploratory study revealed that there is little knowledge about the NP workforce in surveyed general practices. Ongoing work is required to improve knowledge for employing general practices, including dissemination of information about NP education and training, scope and models of care, and ability to generate business income.

In many birds and mammals, the size and sex composition of litters can have important downstream effects for individual offspring. Primates are model organisms for questions of cooperation and conflict, but the factors shaping interactions among same-age siblings have been less-studied in primates because most species bear single young. However, callitrichines (marmosets, tamarins, and lion tamarins) frequently bear litters of two or more, thereby providing the opportunity to ask whether variation in the size and sex composition of litters affects development, survival, and reproduction. To investigate these questions, we compiled a large dataset of nine species of callitrichines (n = 27,080 individuals; Callithrix geoffroyi, Callithrix jacchus, Cebuella pygmaea, Saguinus imperator, Saguinus oedipus, Leontopithecus chrysomelas, Leontopithecus chrysopygus, Leontopithecus rosalia, and Callimico goeldii) from zoo and laboratory populations spanning 80 years (1938-2018). Through this comparative approach, we found several lines of evidence that litter size and sex composition may impact fitness. Singletons have higher survivorship than litter-born peers and they significantly outperform litter-born individuals on two measures of reproductive performance. Further, for some species, individuals born in a mixed-sex litter outperform isosexually-born individuals (i.e., those born in all-male or all-female litters), suggesting that same-sex competition may limit reproductive performance. We also document several interesting demographic trends. All but one species (C. pygmaea) has a male-biased birth sex ratio with higher survivorship from birth to sexual maturity among females (although this was significant in only two species). Isosexual litters occurred at the expected frequency (with one exception: C. pygmaea), unlike other animals, where isosexual litters are typically overrepresented. Taken together, our results indicate a modest negative effect of same-age sibling competition on reproductive output in captive callitrichines. This study also serves to illustrate the value of zoo and laboratory records for biological inquiry.

AIMS: Previous studies have reported the defibrillation testing during implantable cardioverter defibrillator (ICD) implantation is associated with elevated cardiac biomarkers and ST-segment electrocardiogram (ECG) changes suggesting that shocks during testing may cause harm. However, the effects of testing have not been isolated from the implant procedure itself, where lead deployment may cause myocardial damage. This prospective study examined high sensitivity troponin T (hs-TnT) levels and ECG changes during ICD implanting alone, ICD implantation with testing and device testing as a stand-alone procedure. METHODS AND RESULTS: We examined hs-TnT at baseline, and 6-8 h post procedure and 12 lead ECG at baseline, and 30 s, 5 min, and 10 min post right ventricle lead deployment and post defibrillation. There was no significant change in hs-TnT levels in a group of patients (n = 11) undergoing defibrillation testing alone, while hs-TnT was significantly elevated in patients undergoing implantation alone (n = 13, median increase 96%, P = 0.005) and in patients undergoing implantation and testing (n = 13, median increase 161%, P = 0.005). There was a significant correlation between the number of lead deployments and the percentage change in hs-TnT (r = -0.51, P = 0.01), but no correlation between either the number of shocks (r = 0.26, P = 0.25) or the total delivered energy (r = 0.24, P = 0.30) and percentage change in hs-TnT. CONCLUSION: Implantation of ICD leads was associated with release of troponin, but we did not observe any evidence that ICD shocks alone cause myocardial injury.

&lt;div class="htmlview paragraph"&gt;An electronic engine management system has been developed to control both ignition timing and air-fuel (A/F) ratio to maximize fuel economy. Both controls employ feedback techniques and are therefore intrinsically adaptable to a wide variety of models, as required for a universal retrofit market. The ignition control loop monitors the position of the combustion pressure peak while the mixture control loop senses the lean limit as defined by a roughness threshold. Test results demonstrate fuel economy and transient operation. A brief background to the New Zealand energy conservation program is in included as background to the system’s specification.&lt;/div&gt;

The well-being of Pacific island communities and the ecosystems that support them is inextricably linked. Island ecosystems are fragile, complex, and have often evolved in isolation. Many species have not evolved defenses against common predators such as rats, cats, and invasive ants, and the introduction of new invasive species threatens the delicate balance between island communities and the ecosystems that nourish and sustain them. Invasive ants pose an especially severe threat and impact human health, agriculture, and the natural environment. A best-practice integrated biosecurity system is needed to prevent the entry and establishment of these species as well as mitigate impacts caused by priority invasive ants currently present in the region. We recommend a regional approach to invasive ant biosecurity be considered, which includes the essential elements of prevention, early detection, rapid response, ongoing management, capacity building, outreach, and research. This system should operate at island, national, and regional scales. The strategy has six main objectives: Prevention (prevent the entry of invasive ants into the Pacific region and prevent their spread to new locations within the region). Early detection and incursion response (detect and eradicate new invasive ant incursions while eradication is still possible and costs are low). Management of existing species (mitigate the impacts of priority invasive ants already present). Public awareness and engagement (increase public awareness of invasive ant impacts, enlist their cooperation and support for detection and control). Enhance capacity for invasive ant biosecurity and management (prevention plans, pre-approved control chemicals, monitoring protocols, etc.). Targeted research (develop an active research program that provides practical improvements in detection and mitigation of invasive ants).

Background: A discussion on social media led to the formation of a multidisciplinary group working on this project to highlight women's contributions to science. The role of marginalised groups in science has been a topic of much discussion, but data on these contributions are largely lacking. Our motivation for the development of this dataset was not only to highlight names of plant genera that honour women, but to enrich this information with data that would allow the names, roles and lives of these women to be shared more widely with others, both researchers and data sources like Wikidata. Amplification of the contributions of women to botany through multiple means will enable the community to better recognise and celebrate the role of this particular marginalised group in the history and development of science. New information: The innovative approach of our study resulted in a dataset that is dynamic, expansive and widely shared. We have published a static dataset with this paper and have also created a dynamic dataset by linking flowering plant genera and the women in whose honour those genera were named in Wikidata. This concurrent addition of the data to Wikidata, a linked open data repository, enabled it to be enriched, queried and proactively shared during the whole process of dataset creation and into the future. This innovative workflow allowed wide, open participation throughout the research process. The methodology and workflows applied can be used to create future datasets celebrating and amplifying the contributions of marginalised groups in science.

Abstract Systems archetypes are effective in communicating complex behaviour with relatively simple structures, across a wide range of topics. The “power dynamics” between different power holders are critically important in decision making when it comes to formulating and implementing policies. This topic was explored at a four‐day Australasian systems workshop run in New Zealand. A synthesis approach was combined with analytical procedures from system dynamics (SD). Building on Rahn's “Fear and Greed” political archetype, a conceptual “Power and Influence” political archetype was developed. This political archetype shows the impact of public support. It is used to analyse a crowdfunding story in New Zealand. A small SD concept model was subsequently constructed to test this story and evaluate alternative public support scenarios. A library of political archetypes and concept models would be an asset for the field of SD and provide a means of synthesising insights from case studies and social theory. © 2019 System Dynamics Society