scholarly journals ATP Bioluminescence for Rapid and Selective Detection of Bacteria and Yeasts in Wine

2021 ◽  
Vol 11 (11) ◽  
pp. 4953
Author(s):  
Saverio Monica ◽  
Elena Bancalari ◽  
Vincenzo Castellone ◽  
Jos Rijkx ◽  
Sarah Wirth ◽  
...  

Microbial contamination may represent a loss of money for wine producers as several defects can arise due to a microorganism’s growth during storage. The aim of this study was to implement a bioluminescence assay protocol to rapidly and simultaneously detect bacteria and yeasts in wines. Different wines samples were deliberately contaminated with bacteria and yeasts at different concentrations and filtered through two serial filters with decreasing mesh to separate bacteria and yeasts. These were resuscitated over 24 h on selective liquid media and analyzed by bioluminescence assay. ATP measurements discriminated the presence of yeasts and bacteria in artificially contaminated wine samples down to 50 CFU/L of yeasts and 1000 CFU/L of bacteria. The developed protocol allowed to detect, rapidly (24 h) and simultaneously, bacteria and yeasts in different types of wines. This would be of great interest for industries, for which an early detection and discrimination of microbial contaminants would help in the decision-making process.

2014 ◽  
Vol Volume 2 ◽  
Author(s):  
Hasmik Atoyan ◽  
Jean-Marc Robert ◽  
Jean-Rémi Duquet

The utilization of Decision Support Systems (DSS) in complex dynamic environments leads the human operator almost inevitably to having to face several types of uncertainties. Thus it is essential for system designers to clearly understand the different types of uncertainties that could exist in human-machine systems of complex environments, to know their impacts on the operator's trust in the systems and decision-making process, and to have guidelines on how to present uncertain information on user interfaces. It is also essential for them to have an overview of the different stages, levels, and types of system automation, and to know their possible impacts on the creation of different types of uncertainties. This paper investigates these topics and aim at helping researchers and practitioners to deal with uncertainties in complex environments.


2016 ◽  
Vol 6 (2) ◽  
pp. 57-71
Author(s):  
E.V. Shmakova ◽  
E.M. Popova ◽  
E.S. Shekhovtsova ◽  
T.N. Kabanova

The article presents the results of a study of psychological factors of decision making amongforensic psychiatric specialists. Given the survey data of10 medical psychologists and 10 psychiatrists carrying out compulsory treatment in the psychiatric hospital №5, Moscow Department of Public Health, in comparison with the control group, consisting of professionals working in the field of education, manufacturing, services and technology. Methodical complex included: 1. The Epstein questionnaire of the intuitive style (adaptation Kornilova T. V., Kornilov S. A.); A new questionnaire of tolerance/intolerance to uncertainty (Kornilova T. V.); Melbourne questionnaire of decision making (adaptation T. V.Kornilova); The questionnaire «Personal factors of decision making»(T.V. Kornilova); TheV. Smecalo and V. M. Kucher method; The Tsvetkova Method; 7. The questionnaire «Styles of thinking» by R. Bramsonand Harrison (adaptation of A. A. Alekseev); 8.The questionnaire «Scale of base convictions» (R.Yanov-Boulemane, adaptation M.A. Padun, A.V. Kotelnikov); 9. The check-list aimed to identify the type of decisions taken by the expert in professional activity, their frequency, importance, subjective evaluation is necessary for decision making qualities and to evaluate the most significant opinions of other persons in the decision-making process. There were defined the characteristics of decision making depending on gender. The relationships between type of activity and frequency of occurrence of different types of decisions in professional activities of specialists were revealed. Analyzed the relationship between consideration of the views of others when making decisions and activity.


2018 ◽  
Vol 7 (4.36) ◽  
pp. 854
Author(s):  
K. Palani Raj ◽  
G. Veeramani

Marketing based decision making process in engineering design is an important study required for industries. How to take efficient decision in design that influence marketing? Most of the engineering design decisions are based on consumer behaviour. Decision making in risk and uncertainty in engineering design is an important phenomenon. Cost and time are the two important factors that results loss because of inefficient decision and it affects marketing. Problems involved in marketing based engineering design and decision making process in solving problems is elaborately studied in this journal. How to choose a design in various alternatives, design process, manufacturing feasibility, material and methodology are the important factors that influences decision making in engineering design for marketing. Different types of theories in decision making process that helps in taking proper decision were studied in this journal. This study is based on data taken from various Research & Development centre in Industries. 


2019 ◽  
Vol 61 (2) ◽  
pp. 223-229
Author(s):  
Jie Li ◽  
Marina Predic ◽  
Miguel I. Gómez

A larger share of U.S. wineries is increasingly relying on direct-to-consumer sales mediated by tasting room experiences to make wine a more accessible and less intimidating product for consumers. Previous literature has shown that more favorably descriptive and evocative notes on menus and labels are associated with higher sales and product appeal in restaurant or retail settings. This study estimates the impacts of different types of tasting sheet descriptors on wine sales in winery tasting rooms, where the consumer decision-making process differs from the restaurant and retail settings. We find that using tasting sheets with only objective descriptors is associated with higher wine sales, in comparison with sheets that (a) use subjective descriptors only or (b) combine subjective and objective descriptors. This study supplements the current literature on the effects of product descriptions on sales performance. The findings suggest that wine tasting rooms should employ only objective tasting descriptors in their tasting sheets.


Author(s):  
Yuin Jeong ◽  
Sangheon Oh ◽  
Younah Kang ◽  
Sung-Hee Kim

The decoy effect is a well-known, intriguing decision-making bias that is often exploited by marketing practitioners to steer consumers towards a desired purchase outcome. It demonstrates that an inclusion of an alternative in the choice set can alter one’s preference among the other choices. Although this decoy effect has been universally observed in the real world and also studied by many economists and psychologists, little is known about how to mitigate the decoy effect and help consumers make informed decisions. In this study, we conducted two experiments: a quantitative experiment with crowdsourcing and a qualitative interview study—first, the crowdsourcing experiment to see if visual interfaces can help alleviate this cognitive bias. Four types of visualizations, one-sided bar chart, two-sided bar charts, scatterplots, and parallel-coordinate plots, were evaluated with four different types of scenarios. The results demonstrated that the two types of bar charts were effective in decreasing the decoy effect. Second, we conducted a semi-structured interview to gain a deeper understanding of the decision-making strategies while making a choice. We believe that the results have an implication on showing how visualizations can have an impact on the decision-making process in our everyday life.


2021 ◽  
Vol 38 (05) ◽  
pp. 560-564
Author(s):  
Mithil B. Pandhi ◽  
Ravi Tyagi ◽  
Divya Surabhi ◽  
Ketan Y. Shah

AbstractA wide variety of wires are available for use in interventional radiology, with wires demonstrating differences in construction, diameter, length, coating, shape, and taper. It is crucial to understand the difference in characteristics between these wires to select the most effective and safe wire for the intended purpose when undertaking a procedure. This article reviews the qualities and functions of different types of wires to aid in this decision-making process.


Author(s):  
Wiboon Kittilaksanawong

Managers in organizations are typically faced with changing and ambiguous signals in their operating environment. Based on interpretation of these signals, managers react with appropriate strategies. This chapter presents critical organizational issues in decision making process and its outcomes, including the manager's selective attention, interpretation, and reasoning of uncertain operating environment. In particular, the chapter first discusses why individual managers in the same organization who are faced with same environmental changes may differently interpret threat and opportunity aspects of these changes. Second, the chapter links outcomes of such interpretation to investigate different types of organizational actions. Third, the chapter drives into a greater depth to explore how the manager's experience and characteristics of the environment affect forms of reasoning in interpretation process and performance of subsequent organizational actions.


2011 ◽  
Vol 162 (7) ◽  
pp. 227-232
Author(s):  
Diane Morattel

In land-use planning, taking natural hazards into account cannot be based uniquely on the degree of danger, as shown on natural hazards maps. The level of risk brought in by the different types of human activity in the areas exposed to these hazards must also be taken into consideration. The communes in canton Vaud will soon have completed the realisation of all gravitational natural hazards maps according to catchment area. Consequently, a cantonal and intercommunal strategy for integral risk management must be put in place. The implementation of this strategy requires some prerequisites such as: legislation based on risks, a definition of protection objectives, the organisation of a decision-making process involving all parties concerned, and which will make possible a comprehensive evaluation of land-use related interests. These reflections should result in a change of attitude when faced with the risks linked to natural hazards, and hence land-use adapted to these risks respecting the principles of precaution, equity and proportionality.


2017 ◽  
Vol 11 (3) ◽  
Author(s):  
David B. Wax ◽  
Bryan Hill

Prior studies have linked microbial contamination of intravenous (IV) ports and stopcocks with postoperative infections. Existing technologies to address contamination are not consistently utilized because of the time and effort they require. Herein, novel barrier devices were created that form a protective shell to passively prevent contact between injection sites and practitioner hands or environmental surfaces while still allowing rapid connection of a syringe for injection of medications via an opening in the shell. Prototypes were tested using a grossly contaminated environment and adenosine triphosphate (ATP)-bioluminescence assay. For eight pairs of unshielded versus shielded IV ports/stopcocks, average contamination was 4102 versus 35 RLU (p < 0.02), respectively, indicating that the devices could significantly reduce IV port/stopcock contamination.


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