Results 51 to 60 of about 97,443 (299)

Green preparation of piperazine pyrophosphate and its application in flame-retardant silicone rubber

Hecheng xiangjiao gongye
The expansive flame retardant pipe-razine pyrophosphate was synthesized via "one pot method" using phosphoric acid and piperazine as raw materials. Fourier transform infrared spectroscopy was employed to characterize the resulting product. The properties
HUANG Lun1,2, YE Dan-yang1,2, JIAO Wei-xian1,2, MENG Xi1,2, LI Wen-juan3
doaj   +1 more source

The crystal structures, Hirshfeld surface analyses and energy frameworks of 8-{1-[3-(cyclopent-1-en-1-yl)benzyl]piperidin-4-yl}-2-methoxyquinoline and 8-{4-[3-(cyclopent-1-en-1-yl)benzyl]piperazin-1-yl}-2-methoxyquinoline

Acta Crystallographica Section E: Crystallographic Communications, 2021
The title compounds, 8-{1-[3-(cyclopent-1-en-1-yl)benzyl]piperidin-4-yl}-2-methoxyquinoline, C27H30N2O (I), and 8-{4-[3-(cyclopent-1-en-1-yl)benzyl]piperazin-1-yl}-2-methoxyquinoline, C26H29N3O (II), differ only in the nature of the central six-membered ...
Nisar Ullah, Helen Stoeckli-Evans
doaj   +1 more source

Studies on the Prevalence and Control of Parasitic Helminths in Natural Laying Hens [PDF]

, 2016
One societal trend that has been gaining much traction and popularity since the 21st century began is “organic” and/or “natural” food products. In 1999, the global market accounted for $15.2 billion dollars worth of organic food and drink, compared to ...
Weir, Brittany R
core   +2 more sources

Tip-sample interactions in atomic force microscopy: I. Modulating adhesion between silicon nitride and glass [PDF]

, 1991
An adhesive interaction between a silicon nitride AFM tip and glass substrate in water is described. This adhesion is in the range 5-40 nN, of which a large component is likely to be due to hydrogen bonding between the silanol groups on both surfaces ...
Hansma, Paul K., Hoh, Jan H., Revel, Jean-Paul   +2 more
core   +1 more source

Aqueous Two‐Phase Bioinks for Discrete Packing and Compartmentalization of 3D Bioprinted Cells

Advanced Healthcare Materials, EarlyView.
Aqueous two‐phase systems (ATPS) enable the formation of biomimetic interfaces crucial for tissue engineering. However, clinical translation remains limited by the challenge of precisely controlling cellular compartmentalization. Here, we developed ATPS biomaterial inks for 3D bioprinting allowing tuneable droplet formation via NaCl modulation.
Martina Marcotulli, Arianna Iacomino, Federico Serpe, Lucia Iafrate, Marco Bastioli, Giorgia Montalbano, Michele D'Orazio, Biagio Palmisano, Silvia Franco, Arianna Mencattini, Roberta Angelini, Eugenio Martinelli, Alessandro Corsi, Mara Riminucci, Giancarlo Ruocco, Chiara Scognamiglio, Andrea Barbetta, Gianluca Cidonio   +17 more
wiley   +1 more source

A Study on the Synthesis and Anticancer Activities of Novel 6-Methoxy Flavonyl Piperazine Derivatives

Proceedings, 2017
Cancer is an extensive and complicated family of malignancies that can affect virtually every part of the body. It is reported that over 1.2 million new cases are diagnosed every year.
Meltem Ceylan-Ünlüsoy, Oya Bozdağ-Dündar   +1 more
doaj   +1 more source

Bis[N-(2-hydroxyethyl)-N-isopropyldithiocarbamato-κ2S,S′](piperazine-κN)cadmium: crystal structure and Hirshfeld surface analysis [PDF]

, 2016
The title compound, [Cd(C6H12NOS2)2(C4H10N2)], features a distorted square-pyramidal coordination geometry about the central CdII atom. The dithiocarbamate ligands are chelating, forming similar Cd—S bond lengths and define the approximate basal plane ...
Jotani, Mukesh M., Siti Artikah M. Safbri,, Siti Nadiah Abdul Halim,, Tiekink, Edward R. T. *   +3 more
core   +2 more sources

Diels‐Alder Click Chemistry as a Dynamic‐Covalent Crosslinking Method in Spheroid‐Encapsulating Hydrogels for Cartilage Engineering

Advanced Healthcare Materials, EarlyView.
This research shows the development of hydrogels with Diels‐Alder click chemistry for engineering cartilage‐like tissue. The hydrogels support cartilage spheroids which could be cultured for at least 28 days. Furthermore, the spheroids showed a tendency to fuse together into a more consistent construct, and produced important components needed for ...
Sanne M. van de Looij, Antonia G. Vasilopoulou, Lennard Spauwen, Antoinette van den Dikkenberg, Jasmijn V. Korpershoek, Mylene de Ruijter, Jos Malda, Bas G. P. van Ravensteijn, Tina Vermonden   +8 more
wiley   +1 more source

A comprehensive review on the synthesis of substituted piperazine and its novel bio-medicinal applications

Chemistry of Inorganic Materials
Piperazine is two nitrogen containing heterocyclic compound. The fundamental activity of the piperazine is due to the 1,4-position of nitrogen atoms and their substitutions. The SN1 reaction is followed by the others alkylation and substitution reactions.
Muhammad Rizwan, Sobia Noreen, Sadia Asim, Zohaib Liaqat, Musrat Shaheen, Hina Ibrahim   +5 more
doaj   +1 more source

MODELING POLARIZATION CURVE IN AN AQUEOUS CARBONATED SOLUTION OF PIPERAZINE

Journal of Engineering and Sustainable Development, 2022
A polarization curve model is developed for carbon steel in an aqueous carbonated solution of piperazine (PZ). This model has been used to generate the polarization curve and control the parameters relevant to the corrosion rate of carbon steel in the PZ-
Lubna Ghalib, Brahim Si Ali, Shaukat Ali Mazari   +2 more
doaj   +1 more source