Results 101 to 110 of about 1,387,172 (310)
Green design of circuit breaker electrical life to improve resource utilization
Scientific ReportsA qualified circuit breaker possesses an inherent electrical life upon leaving the factory. During its operational lifespan, this electrical life gradually diminishes due to various factors, including electrical and mechanical wear.
Jungang Zhou, Zhaoxia Shang
doaj +1 more source
Influencing factors and migration rules of 14 kinds of heavy metals in tableware
Shipin yu jixieObjectiveThis study focus on exploring the factors affecting the migration of 14 heavy metal elements such as Ag, As and Pb in tableware and the migration patterns of each element.MethodsSilver tableware was chosen as an example, and the following ...
TANG Shali +4 more
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FEBS Letters, EarlyView.An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley +1 more source
Consumer Behavior: Product Characteristics and Quality Perception
Consumers rely on signals, both extrinsic and intrinsic attributes, to solve their asymmetric information problem regarding product quality. In this study an experiment is designed to evaluate how consumers assess quality perception in terms of specific ...
Pires Gonçalves, Ricardo
core
Vertical Product Differentiation When Quality is Unobservable to Buyers [PDF]
We analyze vertical product differentiation in a model where a good’s quality is unobservable to buyers before purchase, a continuum of quality levels is technologically feasible, and minimum quality is supplied under competitive conditions.
Gerhard Orosel, Klaus G. Zauner
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Shipin yu jixieObjectiveTo establish a method for simultaneous determination of chlorothalonil and its metabolite 4-hydroxychlorothalonil residues in animal-derived food by ultra-high performance liquid chromatography-tandem mass spectrometry.MethodsThe samples were ...
LIU Xiaofang +4 more
doaj +1 more source
FEBS Letters, EarlyView.The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson +6 more
wiley +1 more source
Quality assessment of a service product.
This study brings together two bodies of literature, one concerned with the character of services and the other concerned with the nature of quality, in order to explore the nature and possible forms of measurement of service quality.
Oberoi, Usha
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Towards the definition of a novel quality paradigm for Product-Service Systems
, 2019 Product-Service Systems (PSS) are increasingly emerging as an important source of competitive advantage, allowing manufacturing companies to differentiate themselves from their competitors.
Luca Mastrogiacomo +2 more
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Shipin yu jixieObjectiveThis study aimed to develop a rapid and efficient method for quantifying tetraniliprole residues in animal-derived foods by combining multi-plug filtration cleanup (m-PFC) with high-performance liquid chromatography-mass spectrometry (HPLC-MS ...
YUAN Liejiang +4 more
doaj +1 more source