Results 71 to 80 of about 111,032 (263)

Migration of Electronic Energy from Chlorophyll b to Chlorophyll a in Solutions

Biophysical Journal, 1972
Absorption, emission, and fluorescence excitation spectra of pure solutions of chlorophyll a (Chl a) and chlorophyll b (Chl b) in diethyl ether and of equimolecular mixed solutions of the two pigments, were determined at room temperature as functions of concentration (in the range from 5 x 10(-6) M to 4 x 10(-3) M) and of wavelength of the exciting ...
Bauer, R.K., Szalay, L., Tombacz, E.
openaire   +2 more sources

Rapid assessment of fern spore quality using microscale electrical conductivity testing

Applications in Plant Sciences, EarlyView.
Abstract Premise Ex situ spore banks are essential for fern conservation and research, yet traditional germination tests for assessing spore quality are time consuming and labor intensive. We explored whether electrical conductivity (EC), a rapid proxy for seed vigor, could offer an efficient alternative for evaluating fern spore quality. Methods Using
Yao‐Moan Huang, Chia‐Wen Ko, Chin‐Tzer Duh, Chu‐Mei Huang, Wen‐Liang Chiou, Tzu‐Tong Kao   +5 more
wiley   +1 more source

Biochar‐based fertilizers improve nutrient use efficiency in sunflower grown on a subtropical tidal soil

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Improving fertilizer use efficiency is essential for reducing environmental pollution, sustaining agricultural production, and maximizing the economic profitability of crop production systems. This study tested the hypothesis that the formulation strategy of biochar‐based fertilizers, rather than nutrient addition alone, is associated with ...
Md. Al‐Amin, Miftahul Jannat Mim, S. M. Mahbubul Alam, Shamim Mia, M. M. Masud, Gopal Saha, Md. Abdul Kader, Keiji Jindo   +7 more
wiley   +1 more source

Bioeconomy, sustainability, and digital technologies in Haematococcus lacustris biomass and astaxanthin production: advances and outlook

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Astaxanthin is a carotenoid with strong antioxidant properties, used in research on cancer treatment, ocular injuries, and neurological disorders. When produced by the microalgae Haematococcus lacustris, its antioxidant potential is even higher than that of the synthetic molecule, making it particularly attractive for pharmaceutical and ...
Renata Kühl Rocha, Lucas Nascimento Dario, Ana Caroline de Souza Barnabé, Paulo Sérgio de Arruda Ignácio, Reinaldo Gaspar Bastos, Augusto Ducati Luchessi   +5 more
wiley   +1 more source

Selenium supply affects chlorophyll concentration and biomass production of maize (Zea mays L.)

Die Bodenkultur, 2018
The objective of this work was to investigate the effect of selenium (Se) on the biomass production and the contents of photosynthetically active pigments. The pot experiment included two maize genotypes: hybrid 408BC originating from Croatia and a local
Sali Aliu, Zeka Dukagjin, Fetahu Shukri, Rusinovci Imer, Kaul Hans-Peter   +4 more
doaj   +1 more source

First‐in‐human, phase I, randomized, safety, pharmacokinetic, food‐effect and pharmacodynamic study of a tyrosine kinase 2/Janus kinase 1 inhibitor, SDC‐1801

British Journal of Clinical Pharmacology, EarlyView.
Aim The purpose of this study is to evaluate safety, tolerability, pharmacokinetics (PK), food‐effect (FE) and pharmacodynamics (PD) of an oral tyrosine kinase‐2 (TYK2)/Janus kinase‐1 (JAK1) inhibitor, SDC‐1801, in healthy adult participants. Methods This first‐in‐human study randomized 95 male and female participants.
Chris Brearley, Sam Francis, John Reader, Judi Proctor   +3 more
wiley   +1 more source

Loss of the N-terminal domain of chlorophyllide a oxygenase induces photodamage during greening of Arabidopsis seedlings

BMC Plant Biology, 2008
Background Chlorophyll b is a major photosynthetic pigment in green plants that is synthesized by chlorophyllide a oxygenase (CAO). The regulation of chlorophyll b biosynthesis is an important determinant for the antenna size of photosystems. Chlorophyll
Tanaka Ryouichi, Yamasato Akihiro, Tanaka Ayumi   +2 more
doaj   +1 more source

Effect of activated carbon microstructure and adsorption mechanism on the efficient removal of chlorophyll a and chlorophyll b from Andrographis paniculata extract. [PDF]

Sci Rep, 2023
Liang D, Ji BY, Wang Y, Li X, Gao WY.
europepmc   +1 more source

Micellar enhanced spectrofluorometric determination of chlorophyll a and chlorophyll b in fresh waters☆

Talanta, 1992
The enhancement of the fluorescence of chlorophyll a and chlorophyll b in a non-ionic micellar media is used for the establishment of a new analytical method for the determination of these pigments. After optimization of the variables, including concentration of surfactant, pH, temperature and percentage of organic solvent, the analytical figures of ...
Department of Chemistry, University of Florida, Gainesville, FL 32611, U.S.A. ( host institution ), Santana, Jose J., Gunshefski, MaryAnn, Winefordner, James D.   +3 more
openaire   +4 more sources

Assessment of Light Absorbance and Pigment Composition in Fenugreek (Trigonella foenum-graceum L.) Under Two Agronomic Factors Across Ecologically Distinct Sites

Journal of Medicinal and Industrial Plant Sciences
The purpose of this study was to measure the concentrations of leaf pigment and assess the light absorbance of fenugreek (Trigonella foenum-graecum L.) plants cultivated in two different ecologically locations while being influenced by two agronomic ...
lavinia Wahid fakhri, Kawa Abdulkareem Ali   +1 more
doaj   +1 more source