Results 71 to 80 of about 177,844 (287)

Simultaneous quantification of depolymerization and mineralization rates by a novel 15N tracing model [PDF]

, 2016
The depolymerization of soil organic matter, such as proteins and (oligo-)peptides, into monomers (e.g. amino acids) is currently considered to be the rate-limiting step for nitrogen (N) availability in terrestrial ecosystems.
Andresen, Louise C, Björsne, Anna-Karin, Bodé, Samuel, Boeckx, Pascal, Klemedtsson, Leif, Rütting, Tobias   +5 more
core   +3 more sources

Modelling adhesion-independent cell migration [PDF]

, 2020
A two-dimensional mathematical model for cells migrating without adhesion capabilities is presented and analyzed. Cells are represented by their cortex, which is modelled as an elastic curve, subject to an internal pressure force.
Jankowiak, Gaspard, Peurichard, Diane, Reversat, Anne, Schmeiser, Christian, Sixt, Michael   +4 more
core   +5 more sources

Electrochemically Driven Dissipative Growth of Affinity Hydrogels for Bioresponsive Interfaces

Advanced Functional Materials, EarlyView.
Voltage pulses drive the growth and reinforcement of hydrogel films under dissipative conditions. This biocompatible strategy enables efficient integration of affinity ligands into the hydrogel matrix, enhancing the selective capture of growth factors and allowing precise temporal control over their release, making them well‐suited as adaptive ...
Roberto Baretta, Marco Frasconi
wiley   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

Advanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov, Patrick Fesser, Boris A. Bulgakov, Ulrich S. Schubert   +3 more
wiley   +1 more source

Atomic Force Microscopy of height fluctuations of fibroblast cells [PDF]

, 2002
We investigated the nanometer scale height fluctuations of 3T3 fibroblast cells with the atomic force microscope (AFM) under physiological conditions. Correlation between these fluctuations and lateral cellular motility can be observed.
A. Czirók, B. Hegedös, Bálint Szabó, C. Pasternak, C. Rotsch, C.A. Shönenberger, Ch. Rotsch, Ch.S. Peskin, Dávid Selmeczi, E. Henderson, Emília Madarász, F. Jülicher, G.G. Borisy, H. Chen, H. Haga, H.J. Butt, J. Domke, K. Yasuda, L. Mahadevan, L.M. Machesky, M. Bornens, M. Lekka, M.U. Ehrengruber, Noémi Rozlosnik, O.J. Pletjushkina, S.W. Schneider, T. Duke, T.A.J. Duke, U.G. Hofmann, V. Parpura, Zs. Környei, Zsuzsanna Környei   +31 more
core   +2 more sources

A Modular Bioinstructive Platform Reveals Mechanistic Insights into Additive‐Free, Topography‐Driven Osteogenesis

Advanced Healthcare Materials, EarlyView.
Engineered microparticle topographies direct human mesenchymal stem cell osteogenesis without biochemical additives. This osteogenic commitment is driven by canonical Hedgehog signaling and followed by temporal IGF‐II engagement. Two‐photon polymerization demonstrates spatial control, enabling the engineering of topographical gradients that pattern ...
Fatmah I. Ghuloum, Leo A. H. Zeef, Lee A. Stevens, Marco A. N. Domingos, Susan J. Kimber, Mahetab H. Amer   +5 more
wiley   +1 more source

Estudo cinético da reação heterogênea de despolimerização do PET pós-consumo em meio alcalino: influência da velocidade de agitação Kinetics study of the heterogeneous depolymerization of waste PET in alkaline medium: stirring rate effect

Polímeros, 2006
Existe grande preocupação ambiental e econômica quanto à reutilização dos materiais poliméricos pós-consumo, devido ao grande volume de descarte destes nos lixos urbanos e ao valor agregado que esses materiais apresentam.
Priscila S. Curti, Adhemar Ruvolo Fº
doaj   +1 more source

Photo-oxidative and soil burial degradation of irrigation tubes based on biodegradable polymer blends [PDF]

, 2019
Irrigation tubes based on biodegradable polymers were prepared via an extrusion-drawing process by Irritec and compared to conventional pipes made of high-density polyethylene (HDPE).
Ceraulo M., Giuffre C., La Mantia F. P., Mistretta M. C., Pellegrino R., Rapisarda M., Rizzarelli P., Valenti G.   +7 more
core   +1 more source

Rewriting Polymer Fate via Chemomechanical Coupling

Advanced Materials, EarlyView.
This work introduces a life‐like “living” polymer platform that can grow, degrow, and reprogram its properties after fabrication. By integrating mass transport, reversible polymerization, and controlled catalysis, the material achieves on‐demand changes in size, shape, and mechanical properties.
Jiahe Huang, Haohui Zhang, Jiehao Chen, Xuelin Sui, Febby Krisnadi, Dongjing He, Huajian Ji, Will R. Gutekunst, Michael D. Dickey, Yuhang Hu   +9 more
wiley   +1 more source

Normal-hexane treatment on PET-based waste fiber depolymerization process

e-Polymers
The global increase in polyethylene terephthalate (PET)-based waste fiber poses a persistent environmental risk. While efforts have been made to repurpose waste fibers into bags, clothing, and building materials, the depolymerization process to extract ...
Cho Woo Seok, Lee Joon Hyuk, Na Da Yun, Choi Sang Sun   +3 more
doaj   +1 more source