Results 61 to 70 of about 301,103 (302)

Applications of carbon dots and its modified carbon dots in bone defect repair

Journal of Biological Engineering, 2022
AbstractBone defect repair is a continual and complicated process driven by a variety of variables. Because of its bright multicolor luminescence, superior biocompatibility, water dispersibility, and simplicity of synthesis from diverse carbon sources, carbon dots (CDs) have received a lot of interest.
Longchuan Zhu, Weijian Kong, Jijun Ma, Renfeng Zhang, Cheng Qin, Hao Liu, Su Pan   +6 more
openaire   +3 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Green fluorescent sensor based on carbon quantum dots for Cr(VI) determination [PDF]

شیمی کاربردی روز, 2018
In this study, a new, cheap and green fluorescence sensor based on carbon quantum dots was used for Cr (VI) determination. Carbon quantum dots were synthesized from citric acid, polyvidon and boric acid by microwave assisted method.
Reza Tabaraki, Negar Sadeghi nezhad, Sedigheh Yousefi poor   +2 more
doaj   +1 more source

Mapping electron delocalization by charge transport spectroscopy in an artificial molecule

, 2007
In this letter we present an experimental realization of the quantum mechanics textbook example of two interacting electronic quantum states that hybridize forming a molecular state.
Blick, Burkard, Coish, DiCarlo, Fasth, Gräber, Hatano, Holleitner, Kong, Livermore, Mason, Pioro-Ladrière, Reed, Sapmaz, van der Wiel, Ziegler   +15 more
core   +1 more source

Current and Shot Noise Measurements in a Carbon Nanotube-Based Spin Diode [PDF]

, 2008
Low-temperature measurements of asymmetric carbon nanotube (CNT) quantum dots are reported. The CNTs are end-contacted with one ferromagnetic and one normal-metal electrode.
Christopher A. Merchant, Nina Marković, Saraga D. S., Tinkham M.   +3 more
core   +2 more sources

Cytoplasmic p21 promotes stemness of colon cancer cells via activation of the NFκB pathway

Molecular Oncology, EarlyView.
Cytoplasmic p21 promotes colorectal cancer stem cell (CSC) features by destabilizing the NFκB–IκB complex, activating NFκB signaling, and upregulating BCL‐xL and COX2. In contrast to nuclear p21, cytoplasmic p21 enhances spheroid formation and stemness transcription factor CD133.
Arnatchai Maiuthed, Kerstin Huebner, Katharina Erlenbach‐Wuensch, Chuanpit Hampel, Daniela Thalheim, Adriana Vial‐Roehe, Bodee Nutho, Susanne Merkel, Arndt Hartmann, Pithi Chanvorachote, Regine Schneider‐Stock   +10 more
wiley   +1 more source

Fluorescent Carbon Dots from Food Industry By-Products for Cell Imaging

Journal of Functional Biomaterials, 2023
Herein, following a circular economy approach, we present the synthesis of luminescent carbon dots via the thermal treatment of chestnut and peanut shells, which are abundant carbon-rich food industry by-products.
Federica Mancini, Arianna Menichetti, Lorenzo Degli Esposti, Monica Montesi, Silvia Panseri, Giada Bassi, Marco Montalti, Laura Lazzarini, Alessio Adamiano, Michele Iafisco   +9 more
doaj   +1 more source

Electronic Transport Spectroscopy of Carbon Nanotubes in a Magnetic Field [PDF]

, 2004
We report magnetic field spectroscopy measurements in carbon nanotube quantum dots exhibiting four-fold shell structure in the energy level spectrum. The magnetic field induces a large splitting between the two orbital states of each shell, demonstrating
C. Dekker, C. Dekker, C. Schönenberger, H. Grabert, H. S. J. van der Zant, J. Kong, L. P. Kouwenhoven, P. Jarillo-Herrero, P. L. McEuen, S. De Franceschi   +9 more
core   +1 more source

Carbon Dots and Graphene Quantum Dots in Electrochemical Biosensing [PDF]

Nanomaterials, 2019
Graphene quantum dots (GQDs) and carbon dots (CDs) are among the latest research frontiers in carbon-based nanomaterials. They provide interesting attributes to current electrochemical biosensing due to their intrinsic low toxicity, high solubility in many solvents, excellent electronic properties, robust chemical inertness, large specific surface area,
Susana Campuzano, Paloma Yáñez-Sedeño, José M. Pingarrón   +2 more
openaire   +5 more sources

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

Molecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat, Aslihan Kucuk, Omer Erdogan, Samed Ozer, Bensu Kozan, Tugba Cuceli, Erkan Gumus, Evrim Cevik, Ozge Cevik   +8 more
wiley   +1 more source