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Effects of feeding and manure management interventions on technical and environmental performance of Indonesian dairy farms : Results of a pilot study in Lembang Sub-District, West Java
Full text linkThe aim of this pilot study was to evaluate effects of feeding and manure management interventions on the technical, economic, and environmental performance of Indonesian dairy farms, and to assess the adoption potential of these interventions. Various interventions were tested on 18 practical dairy farms in Lembang Sub-District in West Java, Indonesia. Results showed that ration balancing, mineral supplementation, feeding high quality compound concentrate feed, and (vermi-) composting have potential to improve the profitability of dairy farming, health of dairy cows, and/or reduce environmental pollution of dairy farming
Food for deliberation : philosophical reflections on responsible innovation in the business context
No full textIn our time, innovation is considered an important way to address societal problems. That we expect so much from innovation to solve the challenges of our time, makes the question what could count as ‘responsible innovation’ more pressing. And that is what this thesis is about. The aim of this thesis is to offer philosophical reflections on responsible innovation in the business context. Since that is still a quite broad topic, the main title suggests its further focus: deliberation and food. The first focus originates from the idea in the academic literature on responsible innovation, that innovators should not just assess by themselves what ‘responsible’ is, but should invite others (experts and lay people) to think along with them about the social and ethical aspects of innovation. Chapter 2 to 4 zoom in on this aspect of responsible innovation. The second focus has to do with the specific context of application, namely food and the food industry. Chapter 4 and 5 relate the topic of responsible innovation to this context. The question I raise in chapter 2 is whether the ideal of inclusive deliberation is suitable for innovation processes in businesses. I argue that this is not so easy, and provide different reasons why companies might not be willing to involve societal stakeholders into their innovation processes. First, the requirement of deliberation can be tension with the ability of companies to exploit their innovations commercially within a competitive market. Second, deliberation requires a certain degree of transparency about the innovation strategy of a company. Companies might not be willing to provide this transparency, because they fear knowledge leakage to other companies. Third, companies are controlled most often by people with a financial stake. Therefore, we can expect that financial considerations are decisive in the investment decisions of companies. This could conflict with the ideal of responsible innovation to ‘democratize’ innovation processes. Hence, I suggest that scholars should modify the ideal of deliberation in order to make it suitable to the business context, or they should suggest changes in the governance and regulation of markets so as to make deliberation more workable. Chapter 3 discusses the place of conflict and self-interest in deliberation. It starts with a discussion of the literature on stakeholder dialogue. In this literature, the ideal dialogue is presumed to aim at consensus. This also implies that participants avoid conflict and set self-interested considerations aside. I argue that this ideal of dialogue is problematic, especially for a dialogue between companies and NGOs. I show that companies can never completely set aside their profit-orientation, and hence that this ‘self-interest’ always influences their input in a dialogue. Furthermore, conflict and criticism can be necessary to make clear that societal problems require more attention, whether from the general public or from companies. Since the market is an imperfect institution, we need critical citizens and stakeholders such as NGOs to assess the behavior of companies. A certain degree of conflict between companies and NGOs may therefore be more desirable than a focus on consensus. For these reasons, I develop an alternative approach to dialogue (which I call agonistic deliberation) in which conflict and self-interest have a legitimate place, and can even play a productive role. In chapter 4, a case-study is conducted to better understand how participants in a dialogue deal with conflicts. In this case-study, I analyzed different dialogues organized by the foundation ‘Ik Kies Bewust’, which issued a front-of-pack health label (known as ‘Het Vinkje’). In my analysis, I investigate the conflict between, on the one hand, the value of public health and healthy food, and, on the other hand, the commercial interests of companies. In the responses of companies to this conflict, three patterns became visible. First, companies frame their critics as not constructive, because, in their view, they only criticize but do not help to improve the label. Second, they stressed that they are really and genuinely motivated to make food healthier or to make a healthy food choice easier. Thereby, they seemingly tried to counter the image that they are just motivated to make profit. Third, they called on the government to take more control over the label, because this would make the label more reliable and more broadly adopted. I qualify these responses as defensive, which means that the conflict between commercial considerations and public interests is suppressed or ignored. An active response would require to recognize and confront the conflicts and dilemmas that companies face. The case-study makes clear how difficult it can be to engage in dialogue with critical stakeholders. In chapter 5, I reflect on how food innovation can be responsible. In trying to answer this question, I take a certain detour, by starting a discussion about the place of food in a life well-lived. For this purpose, I use the philosophy of Albert Borgmann. On the basis of my analysis of his philosophy, I argue that there are good reasons for engaging with food in active way, for example by growing your own vegetables and home-cooking, instead of consuming food merely passively. I also draw some implications for food innovation. In my view, people responsible for food innovation should critically assess whether new products or services enhance engagement or disengagement. Is it desirable, for example, to develop even more and better pre-packaged meals, or should we stimulate consumers to cook by themselves? I argue that it would be problematic if our overall pattern of dealing with food is characterized by disengagement and convenience, and hence that food innovation should not only go in this direction
Creating a public policy framework to support urban agriculture
No full textThis chapter reviews the development of urban agriculture policy making. It assesses the key dilemmas, challenges and tensions involved in creating policy frameworks for urban agriculture. The chapter discusses examples of cities that have developed an urban (food and) agriculture policy: Rosario (Argentina), Belo Horizonte (Brazil), Antananarivo (Madagascar), and Toronto (Canada). Based on the dilemmas, challenges and tensions faced by urban policymakers, as well as these four examples, conclusions on future policy development are drawn and trends and priorities for future research are identified
Resolving humic and fulvic acids in binary systems influenced by adsorptive fractionation to Fe-(hydr)oxide with focus on UV–Vis analysis
No full textHumic acid (HA) and fulvic acid (FA) are two operationally defined classes of natural organic matter. In the environment, both materials are present simultaneously and bind in a competitive manner to Fe-(hydr)oxides and other minerals, but their quantification in mixtures is a challenge. In this study, an UV–Vis method was developed to quantify concentrations of HA and FA without and after adsorptive fractionation by an iron oxide (goethite, α-FeOOH). In addition, the performance of the UV–Vis method was compared to that of acid precipitation and size exclusion chromatography (SEC). Among the three methodologies (UV–Vis, acid precipitation, SEC), the UV–Vis method is the most successful in quantifying the ratio of HA to FA subject to fractionation. The UV–Vis method is based on distinct differences in the UV–Vis spectra of HA and FA, including fingerprints in both the spectra shape and intensity. Adsorption to goethite decreased the specific light absorbance of HA and FA, but the changes in spectral shape were not significant enough to cover their differences. The acid precipitation method can also quantify the HA to FA ratio. But to minimize the influence of incomplete HA precipitation or co-precipitation of FA, the concentration of both HA and FA needs to be at least ~20 mgC L−1. The SEC method is not suitable to measure HA and FA after adsorption, because preferential adsorption significantly affects the shape of SEC chromatograms.</p
Modelling the kinetics of osmotic dehydration of mango: Optimizing process conditions and pre-treatment for health aspects
Full text linkThe kinetics of mass transfer and vitamin C loss in mango during osmotic dehydration (OD) were described by mathematical models. Water loss (WL) and weight reduction (WR) was modelled by Weibull's model, soluble solid gain (SSG) was better described by Peleg's model. Vitamin C loss was described by a multiresponse model incorporating both degradation and leaching processes into the OD-solution. Effects of vacuum impregnation (VI) and pectin methylesterase (PME) addition on the model parameters were evaluated. VI increases SSG indicated by a 55% lower value of k2 in the Peleg model (P < 0.05). PME addition showed no significant effect on the mass transfer kinetics. The major mechanism of vitamin C loss during OD was degradation. The pretreatments have no significant effect on degradation and leaching rate constants of vitamin C. The combination of modelling the mass transfer and vitamin C retention was shown to be valuable in optimizing the OD process design to enhance the health-promoting value of OD mango (sugar content, vitamin C) and processing time.</p
Rural-urban differences in meeting physical activity recommendations and health status in cancer survivors in central Pennsylvania
No full textPurpose: This study explored rural-urban differences in meeting physical activity (PA) recommendations and health status in cancer survivors in central Pennsylvania and associations between PA and health status. Methods: Cancer survivors (N = 2463) were identified through a state cancer registry and mailed questionnaires assessing PA and health status. Rural-urban residence was based on county of residence at diagnosis. Participants self-reported frequency and duration of leisure-time PA and were classified as meeting: (1) aerobic recommendations (≥ 150 min/week), (2) muscle-strengthening recommendations (≥ 2 times/week), (3) both aerobic and muscle-strengthening recommendations, or (4) neither recommendation. Logistic regression models examined associations between rural-urban residence and meeting PA recommendations and associations between PA and health status, adjusting for age, cancer type, gender, and income. Results: Nearly 600 (N = 591, 24.0%) cancer survivors returned completed questionnaires (rural 9.5%, urban 90.5%). Half (50.0%) of rural cancer survivors reported no leisure-time PA compared to 35.2% of urban cancer survivors (p = 0.020), and urban cancer survivors were 2.6 times more likely to meet aerobic PA recommendations (95% CI 1.1–6.4). Odds of reporting good physical and mental health were 2.3 times higher among survivors who reported meeting aerobic recommendations compared to those who did not meet PA recommendations (95% CI 1.1–4.5), adjusting for rurality and covariates. Conclusions: Results demonstrate persistent rural-urban differences in meeting PA recommendations in cancer survivors and its association with self-reported health. Implications for cancer survivors: Findings underscore the need for interventions to increase PA in rural cancer survivors in an effort to improve health status and reduce cancer health disparities.</p
Rapid Assessment of Floating Macroplastic Transport in the Rhine
Full text linkMost marine litter pollution is assumed to originate from land-based sources, entering the marine environment through rivers. To better understand and quantify the risk that plastic pollution poses on aquatic ecosystems, and to develop effective prevention and mitigation methods, a better understanding of riverine plastic transport is needed. To achieve this, quantification of riverine plastic transport is crucial. Here, we demonstrate how established methods can be combined to provide a rapid and cost-effective characterization and quantification of floating macroplastic transport in the River Rhine. We combine visual observations with passive sampling to arrive at a first-order estimate of macroplastic transport, both in number (10–75 items per hour) and mass per unit of time (1.3–9.7 kg per day). Additionally, our assessment gives insight in the most abundant macroplastic polymer types the downstream reach of the River Rhine. Furthermore, we explore the spatial and temporal variation of plastic transport within the river, and discuss the benefits and drawbacks of current sampling methods. Finally, we present an outlook for future monitoring of major rivers, including several suggestions on how to expand the rapid assessment presented in this paper.</p
Standardised soil profile data to support global mapping and modelling (WoSIS snapshot 2019)
Full text linkThe World Soil Information Service (WoSIS) provides quality-assessed and standardised soil profile data to support digital soil mapping and environmental applications at broadscale levels. Since the release of the first "WoSIS snapshot", in July 2016, many new soil data were shared with us, registered in the ISRIC data repository and subsequently standardised in accordance with the licences specified by the data providers. Soil profile data managed inWoSIS were contributed by a wide range of data providers; therefore, special attention was paid to measures for soil data quality and the standardisation of soil property definitions, soil property values (and units of measurement) and soil analytical method descriptions. We presently consider the following soil chemical properties: organic carbon, total carbon, total carbonate equivalent, total nitrogen, phosphorus (extractable P, total P and P retention), soil pH, cation exchange capacity and electrical conductivity. We also consider the following physical properties: soil texture (sand, silt, and clay), bulk density, coarse fragments and water retention. Both of these sets of properties are grouped according to analytical procedures that are operationally comparable. Further, for each profile we provide the original soil classification (FAO, WRB, USDA), version and horizon designations, insofar as these have been specified in the source databases. Measures for geographical accuracy (i.e. location) of the point data, as well as a first approximation for the uncertainty associated with the operationally defined analytical methods, are presented for possible consideration in digital soil mapping and subsequent earth system modelling. The latest (dynamic) set of quality-assessed and standardised data, called "wosis-latest", is freely accessible via an OGC-compliant WFS (web feature service). For consistent referencing, we also provide time-specific static "snapshots". The present snapshot (September 2019) is comprised of 196 498 geo-referenced profiles originating from 173 countries. They represent over 832 000 soil layers (or horizons) and over 5.8 million records. The actual number of observations for each property varies (greatly) between profiles and with depth, generally depending on the objectives of the initial soil sampling programmes. In the coming years, we aim to fill gradually gaps in the geographic distribution and soil property data themselves, this subject to the sharing of a wider selection of soil profile data for so far under-represented areas and properties by our existing and prospective partners. Part of this work is foreseen in conjunction within the Global Soil Information System (GloSIS) being developed by the Global Soil Partnership (GSP). The "WoSIS snapshot-September 2019" is archived and freely accessible at https://doi.org/10.17027/isric-wdcsoils.20190901 (Batjes et al., 2019).</p
Plant factories: Reducing energy demand at high internal heat loads through façade design
Full text linkThe increase in global food demand has led to the introduction of new food production systems. One key example is the plant factory. Plant factories face the same challenge as many high-tech building functions: high energy demands resulting from high internal heat loads. In this study we investigate how this energy demand can be reduced through façade design. Energy efficient design closely follows function, façade construction and local climate. Therefore, we analysed the effects of façade properties on the energy use in plant factories for three disparate climate zones: Sweden (Dfc), the Netherlands (Cfb) and the United Arab Emirates (BWh). We coupled the building energy simulation program EnergyPlus with a crop transpiration model to calculate the lighting, sensible cooling, latent cooling, and heating demand from the energy balance. In terms of energy demand (kWh m−2), opaque façades with high U-values and optimised albedo can reduce the facilities’ cooling demand by 18.8%, 30.0% and 30.4%, and their energy demand by 6.1%, 12.5% and 9.5%, for the United Arab Emirates, the Netherlands and Sweden, respectively. In terms of electricity use (kWhe m−2), transparent façades are more efficient, as they allow the use of freely available solar energy instead of artificial light. These façades can reduce electricity use by 9.4%, 7.6% and 7.4%, for the United Arab Emirates, the Netherlands and Sweden, respectively. The presented façade design strategies can significantly reduce energy demand in plant factories. The investigation provides a foundation for the energy efficient design of high-tech buildings, tailored to local climate.</p