Results 11 to 20 of about 25,848 (291)

Utilization of Aloe Vera Extract as A Natural Coagulant and its Effect on The Characteristics of IRR 118 Clone Rubber

open access: yesJurnal Rekayasa Kimia & Lingkungan, 2023
Rubber is one of the plantation products as a foreign exchange earner for the country. The process of processing rubber requires coagulants to accelerate coagulation.
Feerzet Achmad   +5 more
doaj   +1 more source

ANALYSIS OF METHODS FOR STUDYING THE SIZE OF NANOPARTICLES

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
In the presented work, various methods for determining the size of nanoparticles are considered. An effective method for finding possible options has been determined. Information on various methods and studies was selected and analyzed.
G.I. Sverdlik   +4 more
doaj   +1 more source

Influence of scarification method on seed germination of the terrestrial orchid Anacamptis laxiflora (Lam.)

open access: yesThe EuroBiotech Journal, 2021
A critical step during in vitro sexual propagation of terrestrial orchids is the treatment of the microscopic seeds with a disinfecting solution that kills bacteria and fungi attached to the seeds.
Deconninck Gwenaëlle, Gerakis Argyrios
doaj   +1 more source

Washing solution and centrifugation affect kinematics of cryopreserved boar semen

open access: yesJournal of Animal Reproduction and Biotechnology, 2021
Cryopreservation is a widely-used efficient means of long-term sperm preservation. However, unlike other types of semen, cryopreserved boar semen has reduced fertility and the efforts continue to optimize post-thawing sperm recovery.
Areeg M. Almubarak   +5 more
doaj   +1 more source

How do Planktonic Particle Collection Methods Affect Bacterial Diversity Estimates and Community Composition in Oligo-, Meso- and Eutrophic Lakes?

open access: yesFrontiers in Microbiology, 2020
Particles are hotspots of bacterial growth and nutrient recycling in aquatic ecosystems. In the study of particle-attached (PA) and/or free-living (FL) microbial assemblages, the first step is to separate particles from their surrounding water columns ...
Guijuan Xie   +7 more
doaj   +1 more source

Observations on Centrifugation: Application to Centrifuge Development [PDF]

open access: yesClinical Chemistry, 1999
Abstract This report outlines the background to the development of an automated, serial, discrete centrifuge, reporting on the criteria considered essential in such an instrument. We established the criteria by examining the detailed logistics of centrifuge operation in a hospital laboratory.
Mathew Smith   +2 more
openaire   +2 more sources

Quantifying the Influence of Pollen Aging on the Adhesive Properties of Hypochaeris radicata Pollen

open access: yesInsects, 2022
Although pollination is one of the most crucial biological processes that ensures plant reproduction, its mechanisms are poorly understood. Especially in insect-mediated pollination, a pollen undergoes several attachment and detachment cycles when being ...
Steven Huth   +2 more
doaj   +1 more source

Influence of Centrifugation and Shaking on the Self-Assembly of Lysozyme Fibrils

open access: yesBiomolecules, 2022
Protein self-assembly into fibrils and oligomers plays a key role in the etiology of degenerative diseases. Several pathways for this self-assembly process have been described and shown to result in different types and ratios of final assemblies ...
Marzena Krzek   +4 more
doaj   +1 more source

Dynamic electron-phonon and spin-phonon interactions due to inertia [PDF]

open access: yesPhysical Review Research 4, L012004, 2022, 2021
THz radiation allows for the controlled excitation of vibrational modes in molecules and crystals. We show that the circular motion of ions introduces inertial effects on electrons. In analogy to the classical Coriolis and centrifugal forces, these effects are the spin-rotation coupling, the centrifugal field coupling, the centrifugal spin-orbit ...
arxiv   +1 more source

State- and molecule-selective rotational control in gas mixtures with a shaped optical centrifuge [PDF]

open access: yes, 2021
We demonstrate experimentally a method of all-optical selective rotational control in gas mixtures. Using an optical centrifuge - an intense laser pulse whose linear polarization rotates at an accelerated rate, we simultaneously excite two different molecular species to two different rotational frequencies of choice.
arxiv   +1 more source

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