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The heating of flat workpieces of different materials and geometrical characteristics (width, thickness) is often required in the metal industry. The temperature requirements depend on the process to which the workpiece should undergo and the mechanical and chemical characteristics which must be obtained by the heat treatment. For certain applications in which the electrical resistivity of the workpiece material is low or the ratio between the width and thickness of the body is high, the classical longitudinal flux induction heating is efficient only if high frequencies are used. A good alternative is the travelling wave induction heating (TWIH) which has a structure similar to the linear induction machines (LIM).

In this paper an analytical method, based on Fourier's series, which allows to determine the eddy currents distribution in travelling wave induction heaters with cylindrical symmetry is described. The method is particularly suitable for parametric analyses of heating systems with magnetic or non‐magnetic, solid, bimetallic or hollow loads, with inductors (with or without external magnetic yoke) of the transverse flux or travelling wave type. Useful results can be obtained also for the heating of “flat” metal loads, by inductors facing one side of the load.

Childhood obesity is a major global health concern. Understanding children's and adolescent’s eating behaviours and promoting healthier behaviours is key for reducing the negative health outcomes associated with obesity. The current study explored the perceptions of healthy eating behaviours and the influences on eating behaviours amongst 11-to-13-year-old secondary school students.

Nine semi-structured same-sex focus group discussions were conducted in schools located in deprived areas of England, with the discussions subjected to a thematic framework analysis.

Three main constructs were identified in the analysis as follows: (1) eating patterns and lifestyle, (2) social influences and (3) environmental influences. Participants understood what healthy eating behaviours are and the benefits of eating healthy; yet, they reported irregular mealtimes and consuming unhealthy snacks. Students reported that their parents and fellow student peers were strong influences on their own eating behaviours, with girls subjected to being teased by male students for attempting to eat healthily. Finally, students perceived that unhealthy foods were cheaper, tasted better and were readily available in their social environments compared to healthier options, making healthier behaviours less likely to occur.

Findings indicate that students had a good understanding of healthy eating behaviours but did not always practise them and are seemingly influenced by their social and environmental context. The promotion of healthier eating in this age group needs to challenge the misperceptions associated with the accessibility and social acceptability of unhealthy food items.

The purpose of this is study is to evaluate the diet quality in nine local government areas drawn from three states of the south-east geo-political zone of Nigeria.

A multi-stage sampling procedure yielded 1,200 women of childbearing age (15-49 years), who responded to a multi-pass 24-hour diet recall questionnaire at the household. Diet quality (DQ) was assessed using the “diet quality index international” (DQI-I) tool with a scale of 0-100.

Mean age of respondents was 28 ± 5.6 years and body mass index was 26.81 ± 4.8 kg/m². Majorities (96 per cent) were married, 53.2 per cent had complete secondary and 18 per cent post-secondary education, 41.7 per cent were traders, 14.3 per cent civil servants and 25.8 per cent were unemployed. Main staple foods included root and tubers, cereals, legumes and vegetables. The total DQ in the South-east was 58.8 ± 8.1 with a low “variety” (9.5 ± 3.0), poor “adequacy” (22.3 ± 4.7), good “moderation” (25.0 ± 3.8) and “overall balance” (2.0 ± 1.8).The total DQ in Imo, Enugu and Anambra were 58.6 ± 8.3, 58.8 ± 8.0 and 59.0 ± 8.1, respectively (P > 0.05).

The study was limited to three states in South-east Nigeria; it does not give a holistic view of the DQ of women of childbearing age in Nigeria.

The total DQ-I score revealed average overall DQ (59/100) for South-east. However, distinct patterns of low consumption of fruits and vegetables were identified. The need for national (and cross-continental) comparison of DQ using the DQI-I tool is hereby advocated.

The purpose of this paper is to present a first proposal of a healthy dietary diversity index to evaluate meals in self-service restaurants.

This was a cross-sectional, descriptive pilot study in a Brazilian buffet-style restaurant. The study group was selected by systematic sampling and consisted of 678 individuals aged 16-81 years, who were regular diners at a selected restaurant during lunchtime. Photographs were used to assess food choices and a sociodemographic questionnaire was administered to the subjects. A healthy dietary diversity model was created following WHO recommendations and the Brazilian Food Guide. A consensus workshop was conducted with experts to discuss and classify certain dishes as more or less healthy (high/low energy density). The model attributed negative (−3.0-0.0) and positive (0.0-12.0) scores to different food groups. Higher scores meant greater diversity on the plate, and therefore a greater chance of a healthy meal (=9.0), while a lower score reflected a higher variety of energy-dense foods, such as fried dishes (=6.0).

Most diner’s plates (65.3 per cent) obtained low diversity score indexes (=6) and were considered inadequate, represented the dishes where intake should be controlled from a nutritional viewpoint (over caloric meal). There was a significant association between healthy diversity scores (=9.0) and low variety of high energy density dishes on the plates.

This method of assessing the healthy dietary diversity of a main meal could be tested as an innovative model for investigating the food choices of individuals who eat away from home.

The aim of the study is to assess the dietary diversity score (DDS) and nutritional status of women in the University of Agriculture extension village in rural areas of Ogun State, Nigeria.

A representative sample of 204 women was surveyed from the rural villages in two seasons using simple random technique. A pretested interview guide was used to collect information on personal data, and socio demographic characteristics of the subjects. Information on dietary diversity was obtained using Food and Nutrition Technical Assistance Project questionnaire (FANTA). Body mass index (BMI), waist‐hip ratio (WHR) and skin fold thickness were used in classifying obesity. Information on food intake was obtained from 24‐hour dietary recall techniques. For each season, a DDS was computed and the nutritional status was assessed. Data were analysed using descriptive statistics; SPSS software package version 16.0.

The socio economic characteristic revealed that more than half (53 percent) had no formal education, 59 percent were small scale farmers. The DDS increased from 3.55±7.6 to 3.93±4.3 between the two seasons. DDS within the various food groups showed that fruit group increased from 0.48±0.20 to 0.52.±0.10, vegetable group 0.60±0.30 to 0.66±0.30, and meat group 0.48±0.20 to 0.58±0.30 while cereals/grain groups and oil/dairies group decreased from 0.42±0.30 to 0.37, 0.11±0.30 to 0.09, respectively, between the two seasons. The nutrient content of the subjects was calculated from nutrient contents of foods obtained from food composition tables and compared to dietary reference intake (DRI). The results showed that the protein, energy and fat intakes of the subjects increased significantly during the rainy season (p<0.05). Two percent of the subjects gained weight, 4 percent had weight reduction from overweight and obese category. The result of the waist‐hip ratio showed that 78 percent had normal waist‐hip ratio, 14 percent had overweight, and 7 percent were obese. The dietary diversity score of the subjects was low. There is need for nutritional education in the villages.

This may be the first research work to assess the dietary diversity score of rural women in Nigeria.

To provide a selective bibliography for researchers and graduate students who have an interest in induction processes applied to the electromagnetic processing of materials.

The objective is to provide references that identify seminal, early work, and references that represent the current state of the art. References are listed in categories that cover the broad range of induction modeling and application issues.

A brief overview of the key areas in induction processing of materials is provided, but greater emphasis and space is devoted to the references provided.

The middle years of each topic area are not covered.

A very comprehensive coverage of material is provided to those with an interest in induction processing of materials.

This paper fulfils an identified information/resources need.

The purpose of this paper is to evaluate the effects of an intervention to reduce the energy density of meals in the workplace food environment.

This study was conducted on a cosmetics manufacturer that employed 243 people, and was divided into three phases: diagnostic evaluation; development and testing of modifications to the energy density of the preparations; and evaluation of the results obtained. To evaluate the menus, the Meal Quality Index was used. This index consists of five components ranging from 0 to 20 points: “Adequacy of availability of vegetable and fruit”, “Carbohydrate availability”, “Total fat availability”, “Saturated fat availability” and “Menu variability”. The Kruskal‐Wallis test was used to evaluate differences in phases 1 and 3.

The classification, according to the scores for the Meal Quality Index, showed that there was an improvement in the menus, with a decrease in inadequate menus from 31 per cent to 5 per cent and in menus needing improvement from 44 per cent to 29 per cent.

Changes that are relatively simple to implement and reproduce regarding meal production may contribute towards controlling the obesity epidemic, through discouraging the obesogenic environment, especially among captive healthy customers such as workers who use the food services in their workplaces.

Consumption of breakfast is often associated with important health‐related behaviours. For example, skipping breakfast is related to obesity and eating breakfast is also correlated to cognitive, behavioural, and affective components. The purpose of this paper is to review the breakfast eating literature, and investigate the circumstances under which people consume breakfast, what is actually being consumed, and how much breakfast is eaten therefore.

This systematic review summarises the results from 24 studies which focus on who is eating what, where, and with whom.

All 24 of the included studies are of a self‐report nature, from which nine were analysed from second‐hand survey data. Sample sizes vary from 100 to a total of 35,119 with a reported participants' age range from two years old to 70 years of age. Ready‐to‐eat cereal and dairy foods are the most commonly consumed breakfast items across the studies. Between 1.7 and 30 per cent of participants are found to skip breakfast and approximately one‐quarter of the studies report that those with lower socio‐economic status, non‐whites, and females were the groups more likely to omit breakfast.

The evidence provided in this review suggests that there is still considerable variation in studies into breakfast consumption. This has implications for future research into breakfast eating if interventions are based on these studies.

There are very few systematic reviews detailing the quality, context, and content of breakfast consumption and the lack of consistency in the results show the need for further research to be conducted to find a degree of consistency in how breakfast should be defined and measured.

The food pattern that includes ready‐to‐eat (RTE) cereals at breakfast is associated with important reductions in total fat, saturated fat, and cholesterol, and increases the likelihood of an individual meeting the recommended dietary allowances for iron and calcium for three sub‐populations studied (Anglos, African‐Americans, and Hispanics). Beverages, fruit, cereals, breads, and egg items represent the major components of breakfast. RTE cereals were consumed in 30 per cent of the breakfasts; they were fifth in the number of grams consumed per capita. Consumers of RTE cereals consumed a very different pattern of food from non‐consumers of RTE cereals. Individuals aged five and older with three days of dietary data from the US 1989‐91 Continuing Survey of Food for Individuals Intake were used for the analysis, n = 9,957. All breakfasts were combined (n = 26,271).