Results 11 to 20 of about 240,760 (305)

Fractionating microplastics by density gradient centrifugation: a novel approach using LuerLock syringes in a low-cost density gradient maker

Chemistry Teacher International
Microplastics are now ubiquitous in the environment and are even considered “technofossils” of the Anthropocene. Given their omnipresence and potential impact, identifying and analyzing these particles becomes increasingly crucial.
Majcen Alina, Gohla Jan, Steinhoff Anna S., Meißner Lena, Tassoti Sebastian, Spitzer Philipp   +5 more
doaj   +2 more sources

Swim‐up method is superior to density gradient centrifugation for preserving sperm DNA integrity during sperm processing

Reproductive Medicine and Biology
Purpose This study aimed to evaluate the effects of swim‐up and density gradient centrifugation methods on sperm DNA fragmentation. Methods Nineteen normozoospermic patient samples with ≥100 × 106 motile sperms were included in this study.
Kenji Amano, Satoko Oigawa, Koichiro Ichizawa, Yukiko Tokuda, Mami Unagami, Mami Sekiguchi, Mayuko Furui, Kentaro Nakaoka, Ayumu Ito, Rika Hayashi, Yuko Tamaki, Yuko Hayashi, Yusuke Fukuda, Yukiko Katagiri, Masahiko Nakata, Koichi Nagao   +15 more
doaj   +2 more sources

Separation of Bacteria, Protozoa and Carbon Nanotubes by Density Gradient Centrifugation [PDF]

Nanomaterials, 2016
Sustainable production and use of carbon nanotube (CNT)-enabled materials require efficient assessment of CNT environmental hazards, including the potential for CNT bioaccumulation and biomagnification in environmental receptors.
Monika Mortimer, Elijah J. Petersen, Bruce A. Buchholz, Patricia A. Holden   +3 more
doaj   +2 more sources

Elimination of bacteria from semen using a combination of density gradient centrifugation and swim-up

Journal of Men's Health, 2022
Background: To evaluate the efficiency of bacterial clearance of different sperm preparation procedure. Methods: A total of 46 semen samples were collected in this study, each semen sample was divided into four equal parts (0.5 mL each).
Zhiheng Chen, Lingxiao Jiang, Hui Wang, Wumin Quan, Li Yang, Chunquan Ou, Ling Sun   +6 more
doaj   +2 more sources

Sperm sexing with density gradient centrifugation in dogs

Animal Reproduction Science, 2018
Sexed sperm in dogs is of interest because of being polytocous, and as a result, the greatest number of offspring of the same sex can improve the market, although few studies assessing sperm sexing have been performed in this species. The present study, therefore, was conducted to evaluate the effects on sperm quality and the effectiveness of three ...
Gabriele Barros Mothé, Caroline Scott, Carmen Cecília Sicherle, Carlos Renato de Freitas Guaitolini, Camila de Paula Freitas Dell'aqua, Camila Dantas Malossi, João Pessoa Araújo-Júnior, Fabiana Ferreira de Souza   +7 more
openaire   +5 more sources

Microfluidic Adaptation of Density-Gradient Centrifugation for Isolation of Particles and Cells

Bioengineering, 2017
Density-gradient centrifugation is a label-free approach that has been extensively used for cell separations. Though elegant, this process is time-consuming (>30 min), subjects cells to high levels of stress (>350 g) and relies on user skill to ...
Yuxi Sun, Palaniappan Sethu
doaj   +2 more sources

The influence of Percoll® density gradient centrifugation before cryopreservation on the quality of frozen wisent (Bison bonasus) epididymal spermatozoa

BMC Veterinary Research, 2022
Background The wisent (Bison bonasus) is a species that has undergone a population bottleneck. Homozygosity is prevalent within the population and may have a negative impact on semen quality in wisent bulls.
Maria Eberhardt, Sylwia Prochowska, Anna M. Duszewska, Ann Van Soom, Wanda Olech, Wojciech Niżański   +5 more
doaj   +2 more sources

Low-Density Granulocyte Contamination From Peripheral Blood Mononuclear Cells of Patients With Sepsis and How to Remove It – A Technical Report

Frontiers in Immunology, 2021
Elucidating the mechanisms contributing to the dysregulated host response to infection as part of the syndrome is a current challenge in sepsis research. Peripheral blood mononuclear cells are widely used in immunological studies.
Judith Schenz, Manuel Obermaier, Sandra Uhle, Markus Alexander Weigand, Florian Uhle   +4 more
doaj   +1 more source

Comparison of Sperm Telomere Length between Two Sperm Selection Procedures: Density Gradient Centrifugation and Zeta Potential [PDF]

International Journal of Fertility and Sterility, 2020
Background Telomeres are particular sequences of DNA located at the end of the eukaryotic chromosomes that are essential for genome integrity. Telomere length in spermatozoa differs among males, as well as spermatozoa.
Razieh Ghorbani-sini, Tayebeh Izadi, Marziyeh Tavalaee, Leila Azadi, Mehdi Hajian, Mahshid Rahimi Zamani, Mohammad Hossein Nasr-Esfahani   +6 more
doaj   +1 more source

Density Gradient Centrifugation of Rubella Virus [PDF]

Journal of Virology, 1968
Rubella virus was centrifuged in sucrose density gradients. One of two densities could be ascribed to the virus, depending upon the suspending medium used. The virus was found at a density of 1.16 g/cm 3 after centrifugation for 18 hr in sucrose gradients prepared in distilled water.
R M, McCombs, W E, Rawls
openaire   +2 more sources