Results 11 to 20 of about 90,626 (263)

Colloidal Stability of Positively Charged Dispersions of Styrene and Acrylic Copolymers in the Presence of TiO2 and CaCO3

open access: yesColloids and Interfaces, 2019
Increasing antibiotic resistance of several pathogenic microorganisms calls for alternative approaches to prevent spreading of bacterial diseases. We propose to employ for this purpose coatings obtained from positively charged latex dispersions.
Kamil Wojciechowski   +6 more
doaj   +1 more source

From Small Molecules toward Whole Cells Detection: Application of Electrochemical Aptasensors in Modern Medical Diagnostics

open access: yesSensors, 2021
This paper focuses on the current state of art as well as on future trends in electrochemical aptasensors application in medical diagnostics. The origin of aptamers is presented along with the description of the process known as SELEX.
Robert Ziółkowski   +3 more
doaj   +1 more source

Cytotoxicity of Quillaja saponaria Saponins towards Lung Cells Is Higher for Cholesterol-Rich Cells

open access: yesBiophysica, 2021
The purpose of the study was to compare cytotoxicity of two Quillaja saponaria bark saponin (QBS) mixtures against two lung cell lines: normal MRC-5 fibroblast cell line and tumor A-549 epithelial cells of lungs’ alveoli.
Natalia Kozińska   +3 more
doaj   +1 more source

Soapwort (Saponaria officinalis L.) Extract vs. Synthetic Surfactants—Effect on Skin-Mimetic Models

open access: yesMolecules, 2021
Our skin is continuously exposed to different amphiphilic substances capable of interaction with its lipids and proteins. We describe the effect of a saponin-rich soapwort extract and of four commonly employed synthetic surfactants: sodium lauryl sulfate
Ilona Jurek   +3 more
doaj   +1 more source

Expression of miR-664-3p in Osteosarcoma and Its Effects on the Proliferation and Apoptosis of Osteosarcoma Cells

open access: yesIranian Journal of Public Health, 2019
Background: To explore the expression level of miR-664-3p in osteosarcoma and its effects on the proliferation and apoptosis of osteosarcoma cells. Methods: Specimens of osteosarcoma tissues were collected from 41 cases undergoing surgical treatment ...
Ye LI   +4 more
doaj   +1 more source

Influence of the Support Composition on the Activity of Cobalt Catalysts Supported on Hydrotalcite-Derived Mg-Al Mixed Oxides in Ammonia Synthesis

open access: yesChemistry, 2022
Recently, catalysts with hydrotalcites and hydrotalcite-derived compounds have attracted particular interest due to their specific properties, mostly well-developed texture, high thermal stability, and favorable acid–base properties.
Magdalena Zybert   +6 more
doaj   +1 more source

Rapid and Efficient Optimization of Poly(1,2-Ethanediol Citrate) Synthesis Based on Magic Squares’ Various Methods

open access: yesGels, 2022
New biomaterials among aliphatic polyesters are in demand due to their potential applications in tissue engineering. There is a challenge not only to design scaffolds to regenerate defects in load-bearing tissues but also to ensure a proper blood supply ...
Joanna Howis   +2 more
doaj   +1 more source

Experience in Rearing Common Carder Bees (Bombus pascuorum Scop.), with Some Notes on Three Similar Species: Shrill Carder Bee (B. sylvarum L.), Red-shanked Carder Bee (B. ruderarius Müll.), and Brown-banded Carder Bee (B. humilis Ill.) (Hymenoptera: Apidae)

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2015
The rearing method under controlled conditions known for Bombus terrestris was successful in initiating egg-laying for 83% of B. pascuorum queens. After larvae had hatched, fresh pollen pellets needed to be inserted into brood pockets daily.
Vladimír Ptáček   +2 more
doaj   +1 more source

Prevalence and Distribution of Three Bumblebee Pathogens from the Czech Republic

open access: yesInsects, 2022
Bumblebees are significant pollinators for both wild plants and economically important crops. Due to the worldwide decrease in pollinators, it is crucial to monitor the prevalence and distribution of bumblebee pathogens.
Alena Votavová   +5 more
doaj   +1 more source

Phytoextraction of heavy metal from sewage sludge by plants

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2010
In 2008 and 2009, studies made contents of cadmium and lead in the soil and their uptake by non-traditional plants were studied in a small-plot trial. At the same time also the effect of bio-algeen preparations on phytoextraction of heavy metals by these
Jaroslava Bartlová   +3 more
doaj   +1 more source

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