scholarly journals Food quality dominates the impact of food quantity on Daphnia life history: possible implications for re-oligotrophication

Inland Waters ◽  
2014 ◽  
Vol 4 (4) ◽  
pp. 363-368 ◽  
Author(s):  
Dirk Sarpe ◽  
Lisette de Senerpont Domis ◽  
Steven Declerck ◽  
Ellen van Donk ◽  
Bas Ibelings
Keyword(s):  
Life History ◽  
Food Quality ◽  
Food Quantity ◽  
The Impact

Managing Service Quality, Food Quality, Price Fairness and Customer Retention: A Holistic Perspective

2020 ◽  
Vol 2 (1) ◽  
pp. 1-5
Author(s):  
Ammar Ahmed ◽  
Rafat Naseer ◽  
Muhammad Asadullah ◽  
Hadia Khan
Keyword(s):  
Service Quality ◽  
Food Quality ◽  
Service Sector ◽  
Customer Retention ◽  
Price Fairness ◽  
Policy Makers ◽  
Restaurant Management ◽  
The Subject ◽  
Research Propositions ◽  
The Impact

In this competitive environment, organizations strive to satisfy their customer by providing best quality service at affordable and fair prices with a view to enhance their revenues. To achieve the objective of revenue maximization, organizations strive to identify the factors that help them in retaining their customers. Drawing from the signalling theory of marketing, the current study proposes a novel conceptual model representing the impact of service quality with food quality and price fairness on customer retention in restaurant sector of Pakistan. The paper underlines an important arena of knowledge for academicians as well as organizational scientists on the subject. On the basis of literature available on the variables understudy, the present study forwards eight research propositions worthy of urgent scholarly attention. The conceptualized model of the present article can also be viewed significant in unleashing further avenues for the restaurant management entities, policy makers and future researchers in the domain of managing in the service sector businesses.

scholarly journals The impact of sex ratio and economic status on local birth rates

2013 ◽  
Vol 9 (2) ◽  
pp. 20130027 ◽  
Author(s):  
A. Chipman ◽  
E. Morrison
Keyword(s):  
Life History ◽  
Sex Ratio ◽  
Economic Status ◽  
Life History Strategy ◽  
Reproductive Behaviour ◽  
Female Competition ◽  
Birth Rates ◽  
Economically Deprived ◽  
Human Mating ◽  
The Impact

Human mating and reproductive behaviour can vary depending on various mechanisms, including the local sex ratio. Previous research shows that as sex ratios become female-biased, women from economically deprived areas are less likely to delay reproductive opportunities to wait for a high-investing mate but instead begin their reproductive careers sooner. Here, we show that the local sex ratio also has an impact on female fertility schedules. At young ages, a female-biased ratio is associated with higher birth rates in the poorest areas, whereas the opposite is true for the richest areas. At older ages, a female-biased ratio is associated with higher birth rates in the richest, but not the poorest areas. These patterns suggest that female–female competition encourages poorer women to adopt a fast life-history strategy and give birth early, and richer women to adopt a slow life-history strategy and delay reproduction.

Impact of age, size, and sex on adult black soldier fly [Hermetia illucens L. (Diptera: Stratiomyidae)] thermal preference

2021 ◽  
pp. 1-12
Author(s):  
N.F. Addeo ◽  
C. Li ◽  
T.W. Rusch ◽  
A.J. Dickerson ◽  
A.M. Tarone ◽  
...  
Keyword(s):  
Life History ◽  
Thermal Gradient ◽  
Life History Traits ◽  
Animal Feed ◽  
Mass Rearing ◽  
Thermal Preference ◽  
Black Soldier Fly ◽  
Hermetia Illucens ◽  
Surface Temperatures ◽  
The Impact

Population growth and rapid urbanisation have increased the global demand for animal feed and protein sources. Therefore, traditional animal feed production should be increased through the use of alternative nutrient sources. Insects as feed are beginning to fill this need. One such insect is the black soldier fly, Hermetia illucens L. (Diptera: Stratiomyidae). However, to more effectively mass produce the black soldier fly, a better understanding of its thermal biology is needed. Thus, the aim of this study was to evaluate the impact of age, size, and sex on adult black soldier fly thermal preference. The thermal preference of adult black soldier flies was determined by exposing flies to a thermal gradient with a range of surface temperatures and monitoring their positions over time. An aluminium plate was used to create a linear thermal gradient where surface temperatures ranged from ~15-60 °C. Flies were distinguished by age (1-d-post-emergence vs 7-d-post-emergence), size (large vs small) and sex (male vs female) to assess whether thermal preference differed by specific life-history traits. Thermal preference for 7-d-post-emergence adults was significantly lower (19.2 °C) than 1-d-post-emergence adults (28.7 °C), respectively. Similarly, small adults selected significantly cooler (21.1 °C) temperatures than large adults (26.9 °C). No significant differences in thermal preferences were found between sex, regardless of age or size. In fact, males and females had similar thermal preference of 23.8 and 24.2 °C, respectively. This study reveals that multiple life-history traits of adult black soldier fly affect their thermal preference, and thus should be taken into consideration by mass rearing facilities to optimize production.

Impact of high pressure processing on microbiological, nutritional and sensory properties of food: a review

2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ajith Amsasekar ◽  
Rahul S. Mor ◽  
Anand Kishore ◽  
Anupama Singh ◽  
Saurabh Sid
Keyword(s):  
High Pressure ◽  
Food Quality ◽  
High Pressure Processing ◽  
Microbial Inactivation ◽  
Sensory Properties ◽  
Process Conditions ◽  
Processed Food ◽  
Content Type ◽  
Food Properties ◽  
The Impact

Purpose The increased demand for high-quality, nutritionally rich processed food has led to non-thermal food processing technologies like high pressure processing (HPP), a novel process for microbial inactivation with minimal loss of nutritional and sensory properties. The purpose of this paper is to highlight the impact of HPP on the microbiological, nutritional and sensory properties of food. Design/methodology/approach Recent research on the role of HPP in maintaining food quality and safety and the impact of process conditions with respect to various food properties have been explored in this paper. Also, the hurdle approach and the effectiveness of HPP on food quality have been documented. Findings HPP has been verified for industrial application, fulfilling the consumer demand for processed food with minimum nutrition loss at low temperatures. The positive impact of HPP with other treatments is known as the hurdle approach that enhances its impact against microorganism activity and minimizes the effects on nutrition and sensory attributes. Originality/value This paper highlights the impact of HPP on various food properties and a good alternative as non-thermal technology for maintaining shelf life, sensory properties and retention of nutrients.

Physiological and Growth Differences in Three Stocks of Underyearling Sockeye Salmon (Oncorhynchus nerka) on Early Entry into Seawater

1994 ◽  
Vol 51 (4) ◽  
pp. 974-980 ◽  
Author(s):  
Stanley D. Rice ◽  
Robert E. Thomas ◽  
Adam Moles
Keyword(s):  
Life History ◽  
Sockeye Salmon ◽  
Salt Water ◽  
Oncorhynchus Nerka ◽  
Early Life History ◽  
Life History Strategies ◽  
Growth Differences ◽  
The Impact ◽  
Lake Type ◽  
River Type

We compared the impact of exposure to seawater on three sockeye salmon (Oncorhynchus nerka) stocks: one that normally migrates to sea as underyearlings (sea-type) and two with the more common life history strategies of 1 (river-type) or 2 (lake-type) yr of freshwater residence prior to seaward migration. Innate differences in survival, ability to regulate tissue chlorides, and oxygen consumption when first introduced into salt water were more evident in April and May when fish were less than 50 mm in length. In fish longer than 50 mm, the only significant differences among the stocks were in saltwater growth. Between June and August, sea-type fish showed faster growth than river-type fish which in turn grew faster than lake-type fish. When introduced into salt water in October, virtually no growth occurred in any stock, regardless of fish size. River-type and lake-type sockeye, which normally overwinter 1 and 2 yr, respectively, in freshwater, can be reared in seawater if underyearlings are raised to a length of 50 mm before release into salt water, similar to the normal life history of sea-type underyearlings. Early life history appears to be influenced more by habitat than by genetics.

scholarly journals Impactos do Programa de Aquisição de Alimentos (PAA) no Rendimento Escolar dos Municípios do Paraná

2019 ◽  
Vol 20 (4) ◽  
pp. 446-451
Author(s):  
Renata Cattelan ◽  
Lirane Elize Defante Ferreto
Keyword(s):  
School Performance ◽  
Dropout Rate ◽  
Food Shortage ◽  
Early Years ◽  
Pass Rate ◽  
Food Quantity ◽  
Politica Publica ◽  
Keywords Education ◽  
The Impact ◽  
Distortion Rate

No Brasil, ao longo das últimas décadas, algumas políticas públicas procuraram sanar os problemas da carência alimentar. Contudo, a insegurança alimentar tem fatores multidimensionais e impacta de maneiras variadas na vida da população, especialmente de crianças e adolescentes. O impacto da quantidade e qualidade insuficiente dos alimentos pode ser um fator de redução do rendimento escolar. O Programa de Aquisição de Alimentos (PAA) é uma política pública que visa a distribuição de alimentos de qualidade nas escolas, bem como em outros órgãos, e que objetiva gerar renda no campo ao mesmo tempo em que oferece qualidade nutricional. Partindo do problema da carência alimentar para crianças e adolescentes e como isso afeta a produtividade escolar, o objetivo desta pesquisa é avaliar o impacto do PAA no rendimento escolar de crianças e adolescentes que estudam em escolas que são beneficiárias do programa. A metodologia utilizada foi o teste de Mann-Whitney e as variáveis utilizadas foram o IDEB, a taxa de aprovação, a taxa de abandono escolar e a taxa de distorção idade/série para o ensino fundamental séries iniciais e finais. O recorte geográfico é o estado do Paraná, e temporal, os anos de 2013 e 2015. O principal resultado do estudo mostrou que a variável taxa de distorção idade/série dos anos iniciais do ensino fundamental, para o grupo formado pelos municípios afetados pelo PAA, obteve melhora estatisticamente significativa em relação a municípios que não participaram do programa. Palavras-chave: Educação. Segurança Alimentar e Nutricional. Teste de Mann-Whitney. AbstractIn Brazil, over the last decades, some public policies have tried to remedy the problems of food shortage. However, food insecurity has multidimensional factors and impacts in various ways on the lives of the population, especially children and teenagers. The impact of insufficient food quantity and quality may be a factor in reducing school performance. The Food Acquisition Program (FAP) is a public policy aimed at the distribution of quality food in schools as well as other agencies, and which aims to generate income in the countryside while providing nutritional quality. Starting from the problem of food shortage for children and teenagers, and how it affects school productivity, the objective of this research is to evaluate the impact of FAP on the school performance of children and adolescents who study in schools that benefit from the program. The methodology used was the Mann-Whitney test and the variables used were the IDEB, the pass rate, the dropout rate and the age / grade distortion rate for elementary and early grades. The geographical cut is the state of Paraná, and temporal, the years 2013 and 2015. The main result of the study showed that the variable age / grade distortion rate of the early years of elementary school, for the group formed by the municipalities affected by the FAP, obtained statistically significant improvement compared to counties that did not participate in the program. Keywords: Education. Food Safety and Nutrition. Test of Mann-Whitney. 

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