Results 71 to 80 of about 1,007,835 (292)
Rapid Corrosion Testing of Polymer Coated Steel Using a Constant Voltage
International Journal of Electrochemical Science, 2015 An alternative to accelerated corrosion performance evaluation, e.g. neutral salt spray test (NSS), is proposed by applying a constant voltage in a corrosive media.
Junwei Wu +4 more
doaj +1 more source
Variable speed constant frequency constant voltage alternator. Annual report [PDF]
, 1980 A test alternator is operated with digital control of its output frequency for variable shaft speed. The machine is a two-pole alternator with power removed through slip rings. The output frequency of the alternator is controlled by rotating the field by stepping through sixteen coils around the rotor. Usually four coils are active at one time.
Grannemann, W.W., Yang, C.E., Seo, P.H.
openaire +2 more sources
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
Dynamic Voltage Restorer to Maintain Constant Voltage at Load
IOP Conference Series: Materials Science and Engineering, 2020 Abstract This paper is used for decrease the power quality problems in electrical distribution. Sometimes potential is not stable so it causes potential disturbances in power system then it produces harmonics in the system. Therefore, this gained with a concept called DVR.
K Sravan Kumar +3 more
openaire +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
FEBS Letters, EarlyView.This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel +13 more
wiley +1 more source
IET Power ElectronicsIn the field of wireless power transfer technology, capacitive power transfer (CPT) technology has received more and more attention due to its numerous advantages.
Gang Yang +5 more
doaj +1 more source
World Electric Vehicle JournalTo address the limitations of conventional magnetically coupled resonant wireless power transfer (MCR-WPT) systems in multi-frequency multi-load applications—specifically inadequate load power independence and high complexity inconstant-voltage/constant ...
Lu Zhang +5 more
doaj +1 more source
A micromachined flow shear-stress sensor based on thermal transfer principles [PDF]
, 1999 Microhot-film shear-stress sensors have been developed by using surface micromachining techniques. The sensor consists of a suspended silicon-nitride diaphragm located on top of a vacuum-sealed cavity.
Ho, Chih-Ming +6 more
core
Linear Approximations to AC Power Flow in Rectangular Coordinates
, 2015 This paper explores solutions to linearized powerflow equations with bus-voltage phasors represented in rectangular coordinates. The key idea is to solve for complex-valued perturbations around a nominal voltage profile from a set of linear equations ...
Chen, Yu Christine +2 more
core +1 more source