Results 141 to 150 of about 185,610 (340)

Towards a representative periphytic diatom sample [PDF]

Hydrology and Earth System Sciences, 2007
The need to acquire a representative periphytic diatom sample for river water quality monitoring has been recognised in the development of existing diatom indices, important in the development and employment of diatom monitoring tools for the Water ...
doaj  

Possible role of microtubules in vesicular transport of matrix protein during sea urchin larval biomineralization

Developmental Dynamics, EarlyView.
Abstract Background Biomineralization is a vital biological process through which organisms produce mineralized structures such as shells, skeletons, and teeth. Microtubules are essential for biomineralization in various eukaryotic species; however, their specific roles in this process remain unclear.
Areen Qassem, Tsvia Gildor, Smadar Ben‐Tabou de‐Leon   +2 more
wiley   +1 more source

Identification coral reef diatom using scanning electron microscope at Nature Reserve Pulau Sempu (NRPS), East Java

Depik Jurnal
Diatom, Bacillariophyceae, has an important role in environmental support because these algae contribute to 25% of the oxygen supply globally and each year represent 40% of primary production by fixed carbon using photosynthesis.
Sayyid Afdhal El Rahimi, Adryan Kryk, Sulastri Arsad, Oktiyas Muzaky Luthfi, Andik Isdianto, M. Azurea Bahri Luthfi   +5 more
doaj   +1 more source

Diatomic Gasdynamic Lasers [PDF]

The Physics of Fluids, 1972
Predictions from a numerical model of the vibrational relaxation of anharmonic diatomic oscillators in supersonic expansions are used to show the extent to which the small anharmonicity of gases like CO can cause significant overpopulations of upper vibrational states.
openaire   +1 more source

Moss diatoms show regional structuring, high potential endemism, and an inverse latitudinal diversity gradient in the Arctic

Ecography, EarlyView.
Microorganisms perform essential functions in Arctic terrestrial ecosystems. Yet, their ecology and biogeography are poorly understood, despite being necessary to predict microbial responses to future climate change. Here, we provide the first large‐scale floristic and biogeographic study of the moss diatom flora in the tundra regions of the North ...
Charlotte Goeyers, Elie Verleyen, Bart Van de Vijver, Tyler J. Kohler, Petra Klímová, S. Robbert Gradstein, Koen Sabbe   +6 more
wiley   +1 more source

Bottlenecks‐Breaking in Zinc‐Iodine Batteries Toward Practical Implementation: A Review and Perspective

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Aqueous zinc–iodine batteries (Zn–I2Bs) offer promise for grid storage due to safety and cost advantages yet face critical bottlenecks: severe self‐discharge (polyiodide shuttling and HER), limited energy density, sluggish kinetics, and zinc anode instability.
Jia‐Lin Yang, Jun‐Ming Cao, Dai‐Huo Liu, Xing‐Long Wu   +3 more
wiley   +1 more source

Satellite Observations Reveal Declining Diatom Concentrations in the Three Gorges Reservoir: The Impacts of Dam Construction and Local Climate

Remote Sensing
An effective satellite observation system is developed to retrieve the diatom concentration in freshwater ecosystems that could be utilized for understanding aquatic biogeochemical cycles.
Menglan Gan, Lei Feng, Jingan Shao, Li Feng, Yao Wang, Meiling Liu, Ling Wu, Botian Zhou   +7 more
doaj   +1 more source

Rate constant calculations on fast diatom–diatom reactions

J. Chem. Soc., Faraday Trans., 1991
A new method for calculating rate constants for fast reactions between two diatomic molecules is presented. The method involves applying a rotationally adiabatic capture theory with a simultaneous treatment of the rotational motions of both molecules. Results from calculations for dipole–dipole (SO + OH) and dipole–quadrupole (CN + O2) interactions are
Stoecklin, T, Dateo, C, Clary, D
openaire   +2 more sources

Constructing Cu/Cu2O Heterogeneous Interface for Efficient Urea Electrosynthesis

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In this study, a Cu/Cu2O heterogeneous interface with dual active sites is prepared for electrocatalytic CO2 and NO3−$$ {\mathrm{NO}}_3^{-} $$ coupling to urea. The catalyst shows high yield rates of 1156.63 mmol g−1 h−1 and FE of 29.67% at −1.0 V (vs RHE), which is significantly higher than Cu and Cu2O, highlighting the advantages of heterogeneous ...
Jiani Liu, Peiyue Jin, Yujing Liu, Tian Cheng, Jianlong Wei, Jingjing Liu, Yiqiong Zhang, Shuangyin Wang   +7 more
wiley   +1 more source

Efimov effect from functional renormalization

, 2009
We apply a field-theoretic functional renormalization group technique to the few-body (vacuum) physics of non-relativistic atoms near a Feshbach resonance. Three systems are considered: one-component bosons with U(1) symmetry, two-component fermions with
C. Wetterich, G. V. Skorniakov, G. V. Skorniakov, I. V. Brodsky, K. Aoki, R. Schmidt, S. Floerchinger, S. Moroz, U. Niederer   +8 more
core   +1 more source