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Electron beam is a way of radiation that can induce different reactions on polymers. The purpose of this work is to analyze the effect that the electron beam can produce on polyester fabrics.

Poly(ethylene terephthalate) (PET) fibres were treated at 0, 50, 100, 150, and 200 KGy. Later on surface modification was analyzed by Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). Colorimetric and thermal measurements were studied too, as well as traction resistance.

Traction resistance showed no significant variations. As a result the authors could observe some changes in fabric witnesses and cristallinity increase, but no changes in traction resistance were observed. Moreover, when surface was studied, roughness was increased as oligomers moved towards fibre surface because of radiation dose.

The authors could appreciate roughness increased with radiation dose as well as yellowness and crystallinity.

This paper aims to discuss the effectiveness of the European Union (EU) at World Radiocommunication Conferences (WRCs) by comparing EU objectives prior to and outcomes of recent WRCs.

A thematic analysis of qualitative data extracted from documents is conducted. The effectiveness of the EU is discussed by using the concepts of agenda-setting and coalition-building, borrowed from international relations literature.

A clear conclusion on EU effectiveness could not be drawn based on the degree of match between EU objectives and WRC outcomes. Other factors need to be included in the analysis, such as relevance of the EU’s participation at WRCs to the EU member states and availability and allocation of EU resources to the various stages of the WRC process.

Further research is encouraged to investigate the role of the EU at WRCs. In particular, interviews with experts involved in the WRC process may help gather relevant information on EU relevance and EU resource availability and allocation.

This paper contributes to existing research on international radio spectrum regulation by drawing attention to the role of the EU as an international actor.

This paper describes the use of the incremental flow formulation for the numerical analysis of forming processes. This formulation is based on the approximation of the flow type of constitutive equations by means of an algorithmic equation based on geometry changes over a timestep. The resulting equilibrium equations are functions of nodal positions. Hence geometrical constraints such as contact and incompressibility can be enforced in an exact manner. Two types of incremental equations leading to first and second order time approximations are presented. The more accurate case is based on the incremental logarithmic stretches. Several examples will be used to demonstrate the validity of the method.

The authors performed a systematic review and meta-analysis of all published randomized controlled trials with the aim to determine and quantify the anti-hyperglycemic effects of glutamine (Gln) in acute and chronic clinical settings.

The authors conducted a comprehensive search of all randomized clinical trials performed up to December 2018, to identify those investigating the impact of Gln supplementation on fasting blood sugar (FBS), insulin levels and homeostatic model assessment-insulin resistance (HOMA-IR) via ISI Web of Science, Cochrane library PubMed and SCOPUS databases. A meta-analysis of eligible studies was conducted using random effects model to estimate the pooled effect size. Fractional polynomial modeling was used to explore the dose–response relationships between Gln supplementation and diabetic indices.

The results of the present meta-analysis suggest that of Gln supplementation had a significant effect on FBS (weighted mean difference (WMD): –2.868 mg/dl, 95 per cent CI: –5.467, –0.269, p = 0.031). However, the authors failed to observe that Gln supplementation affected insulin levels (WMD: 1.06 units, 95 per cent CI: –1.13, 3.26, p = 0.34) and HOMA-IR (WMD: 0.001 units, 95 per cent CI: –2.031, 2.029, p = 0.999). Subgroup analyses showed that the highest decrease in FBS levels was observed when the duration of intervention was less than two weeks (WMD: –4.064 mg/dl, 95 per cent CI: –7.428, –0.700, p = 0.01) and when Gln was applied via infusion (WMD: –5.334 mg/dl, 95 per cent CI: –10.48, 0.17, p = 0.04).

The results from this meta-analysis show that Gln supplementation did not have a significant effect on insulin levels and HOMA-IR. However, it did significantly reduce the levels of FBS, obtaining a higher effect when the duration of the intervention period was less than two weeks.

In sharp contrast to television, various sources of market failure currently prevent market forces fulfilling the promise of digital switchover in radio markets. The purpose of this paper is to review the strengths and weaknesses, business models and market deployment of the two main platforms, with a view to establishing the economic case for higher regulatory involvement in digital radio markets.

The paper analyses the relevant broadcaster, engineering and regulatory literature, with particular emphasis on technical compatibilities among terrestrial radio broadcast technologies, and the technological and economic difficulties they face. The exercise is the first of its kind to scope and bring together these multidisciplinary contributions.

The highly uncoordinated development and deployment of terrestrial digital radio platforms is leading this new digital industry to an impasse. There is a legacy of uncertainty and scepticism amongst market players. Furthermore, prevailing technology and business models have marginalised community radio services and regional audiences.

The analysis does not cover the demand side (contents, culture) nor developments in non‐terrestrial digital platforms, nor in the US‐based IBOC standard.

There is considerable scope, particularly in large, sparsely inhabited countries with sizeable rural audiences to remedy the failings of the current fragmented approach through regulatory intervention through platform integration.

There is a lack of coherent information published on the potential benefits that the new digital platforms are bringing to the audio broadcasting market, and on the current market difficulties they face. The article remedies this gap.

The extent to which research into the design and development of environmental health indicators (EHIs) has translated into operational programmes is unclear. The purpose of this paper is to identify EHI initiatives worldwide, distil the EHIs and draw lessons from the experience.

A systematic internet-based review was undertaken. Programmes were selected for inclusion if they: first, had the ability to monitor both the physical environment and associated health outcomes; and second, the parent agency had the ability to influence policies related to the environment and health.

The small number of eligible programmes indicates EHI initiatives are not yet well established, especially in developing countries. The use of indicators was also limited by uncertainties in the exposure-response relationships that they implied, and the consequent inability to translate the indicators into a common measure of health impact. In addition, there is no information on the extent to which the indicators have been applied in decision making, nor on the policy implications of using indicators.

More effort is needed to encourage the development and use of more balanced and informative sets of indicators, and to evaluate their use and outcomes in terms of health benefits.

The time is right for a substantial review paper on EHIs as they are now being used by a number of organisations and to the knowledge this is the first review of operational EHI programmes worldwide.

High-level labor waste is a major challenge in construction projects. This paper aims to identify, quantify and categorize labor waste in the context of Iranian housing construction projects.

This research uses a case study approach, with empirical data collected through direct observations and semi-structured interviews.

Having triangulated the findings from the literature review and empirical studies, a list of eight types of waste was derived for the thirteen observed laborers in ten case study projects. The empirical studies allowed the labor waste identified from the literature to be verified and refined by considering it in the context of the observed activities, and led to two new types of waste being identified which were not considered in the literature. Findings indicate that nearly 62% of laborers' time is spent on non-value-adding activities. It appeared that “unnecessary movement,” “waiting” and “indirect work” make up the highest labor waste.

This research focuses only on onsite resource flows in a housing construction site. It does not include offsite flows such as material delivery to site.

The findings have provided substantial evidence on type and amount of labor waste and provide a solid basis to stimulate construction actors to participate in reducing labor waste and improving productivity.

Fieldwork in architectural conservation education is a proven practice to develop skills in documenting current conditions and start methodological engagements with a site's architectural and historical values. It is a vehicle to generate intensive learning experiences in comprehensive degrees or short courses. Review of the practice within conservation education is not extensive and the purpose of this paper is to reflect on enhancing pedagogy further.

This reflection was triggered by a major case study, a workshop to generate UG teaching capacity for an Architecture school in Colombia. This led to mapping the fieldwork spectrum, reviewing the authors' experiences (PG courses and external workshops) and activities planned in other MSc programmes. Fieldwork is often seen as skills training, so enhancement is explored through the affiliate geography and architecture UG curricula.

The Colombia workshop provoked strong engagement among students and tutors, and their commitment to make heritage meaningful to their projects is a measure of this pedagogy's success. Fieldwork around a site's essence, beyond skills development can induce conservation students into critical enquiries by motivating them to develop personalised contexts and enhance engagement with the unexpected through inversion of linear learning processes. Setting up site exercises early on PG programmes can encourage curiosity in exploring historic environments and contextualise surveying methods.

Student reaction to these ideas has still to be tested by designing new activities. The educational methods of this implementation need deeper analysis, beyond the paper's scope.

The paper maps the academic value of fieldwork in conservation education, investigating enhancement and cross-fertilisation from architecture and geography.

The production of long-lasting fragrant semi-worsted fabrics using dendritic compounds as one of the nano size materials is concerned. Also quantitative assessments of the odour intensity of the fragrant fabrics using an electronic-nose (E-nose) are made. The paper aims to discuss these issues.

The semi-worsted fabrics were perfumed using the second generation of polypropylene-imine (PPI) dendrimer as a host molecules. The ginseng and rosewater fragrances as guest molecules were applied into the PPI dendrimer to produce long-lasting fragrant fabrics. The odour intensity as well as long-lasting properties of the fragrant fabrics perfumed recently and the other sample perfumed one year ago were evaluated via E-nose fabricated in our laboratory. Physical properties of the fragrant fabrics were compared to the non-fragrant ones.

The interaction between ginseng and rosewater fragrances with the second generation of PPI dendrimer into the semi-worsted fabrics made a long-lasting fragrant fabrics without considerable impacts on bending length, air permeability and wrinkle recovery angles based on statistical analysis. However, the effects of making fragrant fabrics on the increasing weight are significant. In addition, the E-nose was successfully used to monitor the release of ginseng and rosewater fragrance from the fabrics by the response patterns of a temperature-modulated chemo-resistive gas sensor. E-nose analysis showed that the aroma intensity released from the old fragrant semi-worsted fabrics has no obvious diversity from that of new fragrant fabrics.

The findings suggest that the semi-worsted fabrics perfumed with dendritic materials revealed excellent sustained release property.

This paper aims to review the metabolism, epidemiology and treatment of vitamin D and calcium insufficiency as well as its relation to rickets and diabetes type 1 during childhood and adolescence.

The most up‐to‐date and pertinent studies within the literature are included in this narrative review.

Vitamin D deficiency is common in developing countries and exists in both childhood and adult life. The great importance of vitamin D is the moderation of calcium (Ca) and phosphorus (P) homeostasis as well as the absorption of Ca. While insufficiency of vitamin D is a significant contributing factor to the risk of rickets in childhood, it is possible that a more marginal deficiency of vitamin D during life span contributes to osteoporosis as well as potentially to the development of various other chronic diseases such as diabetes type 1.

This paper gives a concise, up‐to‐date overview to nutritionists and dietitians on how vitamin D deficiency may effect rickets and type 1 diabetes.