scholarly journals Pelagic diatoms communicate through synchronized beacon natural fluorescence signaling

2021 ◽  
Vol 7 (51) ◽  
Author(s):  
Joan S. Font-Muñoz ◽  
Marc Sourisseau ◽  
Amanda Cohen-Sánchez ◽  
Idan Tuval ◽  
Gotzon Basterretxea
Keyword(s):  
Fluorescence Signaling ◽  
Natural Fluorescence

Fluorescence Signaling of Hydrogen Sulfide in Broad pH Range Using a Copper Complex Based on BINOL–Benzimidazole Ligands

2015 ◽  
Vol 54 (8) ◽  
pp. 3766-3772 ◽  
Author(s):  
Mingtai Sun ◽  
Huan Yu ◽  
Huihui Li ◽  
Hongda Xu ◽  
Dejian Huang ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Copper Complex ◽  
Fluorescence Signaling ◽  
Ph Range

Engineering DNA aptamers and DNA enzymes with fluorescence-signaling properties

2004 ◽  
Vol 76 (7-8) ◽  
pp. 1547-1561 ◽  
Author(s):  
R. Nutiu ◽  
Shirley Mei ◽  
Zhongjie Liu ◽  
Y. Li
Keyword(s):  
Dna Sequences ◽  
Rational Design ◽  
In Vitro Selection ◽  
Random Sequence ◽  
Pair Potential ◽  
Dna Aptamers ◽  
Dna Molecules ◽  
Dna Enzymes ◽  
Fluorescence Signaling

Single-stranded DNA molecules with ligand-binding ability and catalytic function, referred to as DNA aptamers and DNA enzymes, respectively, are special DNA sequences isolated from random-sequence DNA libraries by “in vitro selection”. These two new classes of artificial DNA molecules have the potential of being used as molecular tools in a variety of innovative applications ranging from biosensing to gene regulation. Our laboratory is interested in engineering fluorescence-signaling DNA aptamers and DNA enzymes that can be widely exploited for detection-directed applications. In this article, we will first discuss our recent efforts on the rational design of a new class of signaling aptamers denoted “structure- switching signaling aptamers”, which report target binding by switching structures from DNA/DNA duplex to DNA/target complex. We will then describe the in vitro selection of fluorescence-signaling DNA enzymes that exhibit a synchronized catalysis-signaling capability by cleaving a chimeric RNA/DNA substrate at the lone RNA linkage surrounded by closely spaced fluorophore-quencher pair. Potential utilities of these signaling DNA molecules will also be discussed.

scholarly journals Bio-optical characterization of the waters of the Bay of La Paz, southern Gulf of California, during late spring 2004

2020 ◽  
Vol 54 (3) ◽  
pp. 343
Author(s):  
Erik Coria-Monter ◽  
María Adela Monreal-Gómez ◽  
David Alberto Salas de León ◽  
Elizabeth Durán-Campos
Keyword(s):  
Primary Production ◽  
Gulf Of California ◽  
Net Primary Production ◽  
Light Extinction ◽  
La Paz ◽  
Light Extinction Coefficient ◽  
Production Values ◽  
Subsequent Calculation ◽  
Natural Fluorescence ◽  
Community Growth

Information on selected bio-optical properties and primary production values of the waters of the Bay of La Paz, southern Gulf of California, is reported during June 2004, a region characterized to have very rich biodiversity, including endemic and endangered species, with high ecological relevance. In-situ measurements of natural fluorescence and photosynthetically available radiation (PAR) enabled the subsequent calculation of the incident irradiance (E0), the light extinction coefficient (k), compensation depth (Zc) and critical depth (Zcr). The results suggest the presence of light propitious conditions for phytoplankton community growth and net primary production, which are highly significant for the potential development of models of light penetration, ocean color, primary productivity, and analyses of organic carbon energy flow.

scholarly journals ESTIMACIÓN DE LA PRODUCTIVIDAD PRIMARIA EN DOS BAJOS DE LA PARTE SUR DEL GOLFO DE CALIFORNIA, MÉXICO

2008 ◽  
Vol 23 (1-2) ◽  
pp. 39
Author(s):  
G. Verdugo-Díaz ◽  
R. Cervantes Duarte ◽  
M. O. Albáñez-Lucero
Keyword(s):  
Surface Temperature ◽  
Water Column ◽  
Primary Productivity ◽  
Gulf Of California ◽  
Inorganic Nutrients ◽  
Water Transparency ◽  
Vertical Profiles ◽  
Subsurface Maximum ◽  
Natural Fluorescence ◽  
Productivity Estimation

Primary productivity estimation in two seamounts in the southern Gulf of California, México Vertical profiles of temperature and natural fluorescence from 100 m deep were made during February 2005. Water transparency was measured using Secchi’s disc, as well samples of superficial water and at maximum of fluorescence deep were collected to analyze inorganic nutrients. In “El Bajo Espiritu Santo” temperature (20 °C at surface) diminished gradually with depth, without significant stratification.Primary productivity shows superficial values close to 6 mg C m-3 h-1, recahing undetectable values at 20 m of depth. In “El Bajo Gorda” surface temperature reached 22 °C and the water column shows a thermocline between 35 m and 45 m of depth. The profiles of primary productivity presented a subsurface maximum (approximately 2 mg C m-3 h-1) associated with the thermocline.

Fluorescence signaling molecularly imprinted polymers for antibiotics prepared via site-directed post-imprinting introduction of plural fluorescent reporters within the recognition cavity

2016 ◽  
Vol 4 (44) ◽  
pp. 7138-7145 ◽  
Author(s):  
Hirobumi Sunayama ◽  
Takeo Ohta ◽  
Atsushi Kuwahara ◽  
Toshifumi Takeuchi
Keyword(s):  
Molecular Imprinting ◽  
Molecularly Imprinted Polymers ◽  
Fluorescent Dyes ◽  
Specific Binding ◽  
Fluorescence Signal ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Fluorescent Reporters ◽  
Binding Event ◽  
Fluorescence Signaling

An antibiotic-imprinted cavity with two different fluorescent dyes was prepared by molecular imprinting and subsequent post-imprinting modifications (PIMs), for the readout of a specific binding event as a fluorescence signal.

scholarly journals DNA-Length-Dependent Fluorescence Signaling on Graphene Oxide Surface

Small ◽  
2012 ◽  
Vol 8 (7) ◽  
pp. 977-983 ◽  
Author(s):  
Po-Jung Jimmy Huang ◽  
Juewen Liu
Keyword(s):  
Graphene Oxide ◽  
Oxide Surface ◽  
Fluorescence Signaling

An Automated System for Kinetic Multiple-Point Determinations Exemplified by Serum Lactic Dehydrogenase Determination

1970 ◽  
Vol 16 (12) ◽  
pp. 972-979 ◽  
Author(s):  
Charles F Fasce ◽  
Robert Rej
Keyword(s):  
Time Delay ◽  
Lactic Dehydrogenase ◽  
Automated System ◽  
Multiple Point ◽  
Normal Range ◽  
Ldh Activity ◽  
Serum Lactic Dehydrogenase ◽  
Natural Fluorescence ◽  
Catalyzed Oxidation

Abstract A fully automated procedure is presented for kinetic determinations and for use of the AutoAnalyzer in their study; serum lactic dehydrogenase has been used to illustrate such an application. The LDH-catalyzed oxidation of L-lactate by NAD in separate, unequal time-delay coils is determined by measuring the natural fluorescence of reduced coenzyme. The normal range for LDH activity by this method was 63-169 U/liter at 37°C.

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