Results 51 to 60 of about 751,572 (302)

Application of Lamp as a Point-of-Care Diagnostic Assay in Remote and Low-Income Regions: Mini-Review

open access: yesActa Medica Bulgarica
Loop-mediated isothermal amplification (LAMP) has received increased attention as a sensitive and fast molecular technique that could be applied at the site of need.
Nikolova E.
doaj   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

Ivory and Stone: Direct Connections between Sculptural Media along the Coast of Sierra Leone, 15th–16th Centuries

open access: yesAfrique Archéologie Arts, 2020
Since the discovery of the ancient stone sculptures in Sierra Leone and the assignment of ivory works of art in European collections to the ancient Sapi peoples of Sierra Leone, the question has arisen as to the connection between the two. Where were the
Frederick John Lamp
doaj   +1 more source

Lamp modulator provides signal magnitude indication [PDF]

open access: yes, 1970
Lamp modulator provides visible indication of presence and magnitude of an audio signal carrying voice or data. It can be made to reflect signal variations of up to 32 decibels.
Zeman, J. R.
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger   +10 more
wiley   +1 more source

The Nazarov Complex of the Lower Don: on Zoroastrianism of the Khazar Ethnos

open access: yesВестник Волгоградского государственного университета. Серия 4. История, регионоведение, международные отношения, 2017
Among the early medieval antiquities of the Lower Don basin, two funerary complexes are of interest. One was accidentally discovered in 1914 in the Cossack village Nazarov, and the other – near the settlement Bolshaya Orlovka in 1972.
Leonid S. Ilyukov
doaj   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

open access: yesAdvanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao   +5 more
wiley   +1 more source

Molecular genetic analysis SARS-CoV-2 of asymptomatic patients in Rostov region

open access: yesМедицинский вестник Юга России, 2020
Objective: conduct molecular genetics diagnosis of SARS-CoV-2 in asymptomatic individuals in the Rostov region.Material and methods: 22037 individuals who at the time of delivery of the material did not have clinically expressed symptoms of respiratory ...
O. A. Perevesentsev   +4 more
doaj   +1 more source

Rapid analysis & design methodologies of High-Frequency LCLC Resonant Inverter as Electrodeless Fluorescent Lamp Ballast [PDF]

open access: yes, 2007
The papers presents methodologies for the analysis of 4th-order LCLC resonant power converters operating at 2.63 MHz as fluorescent lamp ballasts, where high frequency operation facilitates capacitive discharge into the tube, with near resonance ...
Ang, Y A   +3 more
core   +1 more source

Reducing Open‐Circuit Voltage Losses in Wide‐Bandgap FAPbBr3 Perovskite Solar Cells for Continuous Unassisted Light‐Driven Water Splitting

open access: yesAdvanced Functional Materials, EarlyView.
The combination of formamidinium thiocyanate and 1,3‐propane diammonium iodide for bulk and top‐surface passivation, and a ternary fullerene blend to improve energy band alignment, suppresses energy losses in wide‐bandgap FAPbBr3 perovskite solar cells.
Laura Bellini   +9 more
wiley   +1 more source

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