Results 101 to 110 of about 6,068,407 (304)

Reversible addition-fragmentation chain-transfer polymerization: Unambiguous end-group assignment via electrospray ionization mass spectrometry

, 2002
Electrospray ionization mass spectrometry was performed to identify the structure of polymeric methyl acrylates generated via the cumyl dithiobenzoate (CDB), cumyl p-fluorodithiobenzoate (CPFDB), and 1-phenylethyl dithiobenzoate (PEDB) mediated ...
Davis, T. P., Barner, Leonie, Barner, L, Vana, Philipp, Vana, P, Davis, TP, Albertin, L, Barner-Kowollik, C., Davis, Thomas P., Albertin, L., Vana, P., Barner-Kowollik, C, Barner, L., Barner-Kowollik, Christopher, Albertin, Luca   +14 more
core   +1 more source

Controlled polymerization in microfluidics: Advancement in nanogel synthesis

SPE Polymers
This comprehensive review provides a detailed examination of controlled polymerization in the development of nanogels‐based microfluidic devices. Here, we have explored the integration of atom transfer radical polymerization (ATRP) and reversible ...
Tejasvi Pandey, Aditi Sharma, Anuradha Sandhu, Vivek Pandey   +3 more
doaj   +1 more source

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Polymerization-Induced Cooperative Assembly of Block Copolymer and Homopolymer via RAFT Dispersion Polymerization

, 2017
Polymerization-induced cooperative assembly (PICA) is developed to promote morphological transitions at high solids via RAFT dispersion polymerization, using both a macromolecular chain transfer agent (macro-CTA) and a small molecule chain transfer agent
Xiaoqing Lv (1491601), Liangliang Shen (521576), Anqi Zhu (1488514), Baohua Zhang (521406), Zesheng An (1488511)   +4 more
core   +1 more source

Silyl Ketene Acetals/B(C6F5)3 Lewis Pair-Catalyzed Living Group Transfer Polymerization of Renewable Cyclic Acrylic Monomers

Molecules, 2018
This work reveals the silyl ketene acetal (SKA)/B(C6F5)3 Lewis pair-catalyzed room-temperature group transfer polymerization (GTP) of polar acrylic monomers, including methyl linear methacrylate (MMA), and the biorenewable cyclic monomers γ-methyl-α ...
Lu Hu, Wuchao Zhao, Jianghua He, Yuetao Zhang   +3 more
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Catalytic polymeric nanoreactors : more than a solid supported catalyst [PDF]

, 2012
Polymeric nanostructures can be synthesized where the catalytic motif is covalently attached within the core domain and protected from the environment by a polymeric shell.
Cotanda, Pepa, O'Reilly, Rachel K., Petzetakis, Nikos, O'Reilly, Rachel K.; id_orcid   +3 more
core   +1 more source

Alargamento da distribuição de massa molar de polímeros sintetizados com catalisadores metalocênicos dual-site Broadening of molecular weight distribution of polymers synthesized by metallocene-based dual-site catalysts

Química Nova, 2008
The main topics related to the use of dual-site catalysts in the production of polymers with broad molecular weight distribution are reviewed. The polymerization using dual-site catalysts is more economical and allows to produce a higher quality product ...
João H. Z. dos Santos, Adriano G. Fisch, Nilo S. M. Cardozo, Argimiro R. Secchi   +3 more
doaj   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

FEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas, Aaron D. Morgan, Ignas Čiurlionis, Christian Böhm, Stefan Jockenhövel, Willi Jahnen‐Dechent, Marc A. M. J. van Zandvoort   +6 more
wiley   +1 more source

The Effect of Additives on the Polymerization of Ethylene

The Journal of the Society of Chemical Industry, Japan, 1967
ニッケル-カーボン触媒を用いるエチレン重合で,種々の添加剤を加えその影響を検討した。ハロゲン,ハロゲン化炭化水素,プロトン酸,π-酸などを加えると,重合収量と分子量の減少をもたらし触媒活性点を失活させると同時に,停止反応を行なうと考えられる。Lewis塩基の添加は重合収量を低下させるが,分子量にはほとんど影響を与えない。これはLewis塩基が重合反応開始前に触媒活性種と安定な配位化合物を形成するためである。アルコールの添加によって重合収量の増加がみられることから,共触媒と考えられ,水の影響についても同じようなことが推察される。また添加剤によるポリエチレン構造の変化について簡単に検討を加えた。
Toshio TADOKORO, Teikichi HOSOI, Masahilzo KATSURAYAMA, Hiroshi KONISHI   +3 more
openaire   +2 more sources