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Items from 1 to 20 out of 8 519 results

article

Adaptacja algorytmu prowadzenia procesu foresightu technologicznego w jednostkach badawczo-rozwojowych

Beata Poteralska, Anna Sacio-Szymańska

Nauka i Szkolnictwo Wyższe > 2008 > 2(32) > 84-95

Dynamiczny wzrost znaczenia konkurencyjności i innowacyjności wysoko zaawansowanych technologii oraz wiążąca się z tym potrzeba strategicznego planowania działań zarówno w skali kraju, regionu, jak i poszczególnych instytucji determinuje działania rozwiniętych gospodarek świata ukierunkowane na przewidywanie zmian i tendencji rozwojowych, zwłaszcza w średnim i długim okresie. Efektywne narzędzie do...

article

Nanotechnology in Mexico: Global trends and national implications for policy and regulatory issues

Gian Carlo Delgado-Ramos, G.C. Delgado-Ramos

Technology in Society > 2014 > 37 > Complete > 4-15

Nanotechnology, or the capacity to manipulate matter at the atomic (or nanometric) scale, promises such potential that important challenges and impacts are now foreseen, both positive and negative. Examples include possibilities to contribute to the production of clean energy, to water purification, and to important medical advances; specific IP and legal questions posed by the sector; the possibility...

article

In vivo human time-exposure study of orally dosed commercial silver nanoparticles

Mark A. Munger, Przemyslaw Radwanski, Greg C. Hadlock, Greg Stoddard, more

Nanomedicine: Nanotechnology, Biology, and Medicine > 2014 > 10 > 1 > 1-9

Human biodistribution, bioprocessing and possible toxicity of nanoscale silver receive increasing health assessment. We prospectively studied commercial 10- and 32-ppm nanoscale silver particle solutions in a single-blind, controlled, cross-over, intent-to-treat, design. Healthy subjects (n=60) underwent metabolic, blood counts, urinalysis, sputum induction, and chest and abdomen magnetic resonance...

article

Drug delivery systems based on nucleic acid nanostructures

Jan Willem de Vries, Feng Zhang, Andreas Herrmann, J.W. de Vries, more

Journal of Controlled Release > 2013 > 172 > 2 > 467-483

The field of DNA nanotechnology has progressed rapidly in recent years and hence a large variety of 1D-, 2D- and 3D DNA nanostructures with various sizes, geometries and shapes is readily accessible. DNA-based nanoobjects are fabricated by straight forward design and self-assembly processes allowing the exact positioning of functional moieties and the integration of other materials. At the same time...

article

Chitosans for delivery of nucleic acids

Michael D. Buschmann, Abderrazzak Merzouki, Marc Lavertu, Marc Thibault, more

Advanced Drug Delivery Reviews > 2013 > 65 > 9 > 1234-1270

Alternatives to efficient viral vectors in gene therapy are desired because of their poor safety profiles. Chitosan is a promising non-viral nucleotide delivery vector because of its biocompatibility, biodegradability, low immunogenicity and ease of manufacturing. Since the transfection efficiency of chitosan polyplexes is relatively low compared to viral counterparts, there is an impetus to gain...

chapter

Investigation of nanocontact electron properties to the semiconductor islands

N.V. Vostokov, V.F. Dryakhlushin, A.Yu. Klimov, A.V. Novikov, more

11th International Conference 'Microwave and Telecommunication Technology'. Conference Proceedings (IEEE Cat. No.1EX487) > 420 - 421

11th International Conference 'Microwave and Telecommunication Technology'. Conference Proceedings

Distribution of charge in semiconductor islands of InAs on GaAs surface and Ge/sub x/Si/sub 1-x/ on Si surface are investigated by atomic-force microscopy method with using conductor probes. Carriers of charge are concentrated on the islands perimeter that are shown in rough current peaks in this regions. Reason of this effect are indicated. Nanodimensional contact with /spl sim/10/sup -2/ mkm/sup...

chapter

Femtosecond studies of coherent phonons in metallic nanoparticles embedded in dielectric films

Y.H. Zou, W. Qian, L. Lin, Z.J. Xia, more

Quantum Electronics and Laser Science Conference (QELS 2000). Technical Digest. Postconference Edition. TOPS Vol.40 (IEEE Cat. No.0CH 37089) > 54

Quantum Electronics and Laser Science Conference (QELS 2000). Technical Digest. Postconference Edition. TOPS Vol.40

Summary form only given. In recent years, nanoparticles of metals, such as gold, silver, and copper, have attracted much attention because they have electrical and optical properties that are different from those of bulk metals. Electron dynamics and optical nonlinear response of metallic nanoparticles have been studied extensively and suggested that metallic nanoparticles are promising candidates...

article

In Situ Liquid Cell Transmission Electron Microscopy Observations of Growth and Anticorrosion Behaviors of AuCl₃ Shell on Au Nanobipyramids

Wei Wei, Jun Sun, Songtao Zhang, Litao Sun, more

Chinese Journal of Chemistry > 42 > 22 > 2757 - 2764

Designing new materials and architectures to maintain activity and stability requires a better understanding on the anticorrosion dynamics of nanoparticles. Under‐coordinated atoms on the surface of nanoparticles can be protected by deposited shells. Real‐time observation on how protective shells grow and play a role is challenging but worthwhile. Here, protective effects of AuCl₃ shells on Au nanobipyramids...

article

Heteroatom‐Doped Graphene Nanoribbons: Precision Synthesis and Emerging Properties^†

Pei‐Han Gao, Cheng Chen, Xiao‐Ye Wang

Chinese Journal of Chemistry > 42 > 22 > 2877 - 2894

Comprehensive Summary Graphene nanoribbons (GNRs), which can be considered as a special type of conjugated polymers, are quasi‐one‐dimensional graphene cutouts with an opened band gap, revealing great potential as functional materials in optoelectronic, spintronic, and energy‐related applications. An effective strategy to modulate the properties of GNRs is doping heteroatoms into the π‐skeleton....

article

Antimicrobial and anthelmintic effects of copper nanoparticles against Koi carp parasites and their toxicity

Gracienhe Gomes Santos, Liseth Vanessa Perengue Riofrio, Ana Paula Sousa, Paola Capistrano Santos, more

Journal of Fish Diseases > 47 > 11 > n/a - n/a

This study investigated the in vitro antimicrobial and anthelmintic effect of copper nanoparticles (CuNPs) against the bacterium Aeromonas hydrophila, the monogeneans Dactylogyrus minutus, Dactylogyrus extensus, Gyrodactylus cyprini, and the cestode Schyzocotyle acheilognathi, as well as their toxicity to Cyprinus carpio Koi. In the antimicrobial in vitro test, the inhibition zone method and minimum...

article

Combinatorial approach of cannabidiol and active‐targeted‐mediated photodynamic therapy in malignant melanoma treatment

Nkune Williams Nkune, Heidi Abrahamse

Journal of Biophotonics > 17 > 10 > n/a - n/a

Malignant melanoma (MM) continues to claim millions of lives around the world due to its limited therapeutic alternatives. Photodynamic therapy (PDT) has gained popularity in cancer treatment due it increased potency and low off‐target toxicity. Studies have pointed out that the heterogeneity of MM tumours reduces the efficacy of current therapeutic approaches, including PDT, leading to high chances...

article

Nanotechnology in plant nutrition: Ensuring sustainable agriculture through nanofertilizers

Shabnam Mehta, Anjali Thakur, Ibajanai Kurbah, Neha Chauhan, more

Journal of Plant Nutrition and Soil Science > 187 > 5 > 589 - 603

Fertilizers play a crucial role in enhancing the productivity of plants. However, low nutrient use efficiencies of conventional fertilizers (CFs) associated with several losses have led to widespread multi‐nutrient deficiencies in the soil and lower productivity. Furthermore, their excess application has caused serious damage to the soil and environment. Recently, nanotechnology has broadened its...

article

Zinc and silicon fertilizers in conventional and nano‐forms: Mitigating salinity effects in maize (Zea mays L.)

Abbas Shoukat, Britta Pitann, Md. Sazzad Hossain, Zulfiqar Ahmad Saqib, more

Journal of Plant Nutrition and Soil Science > 187 > 5 > 678 - 689

Background Salinity stress, an escalating concern in the realm of agriculture, significantly hampers crop productivity worldwide. In recent years, nano‐fertilizers have been identified as an innovative and promising avenue for improving nutrient use efficiency and mitigating salt stress in plants. Aims This study delves into the comparative efficacy of nano‐fertilizers (Zn and Si) and their conventional...

article

Bottom‐up Synthesis of Highly Chiral 1T Molybdenum Disulfide Nanosheets

Lorenzo Branzi, Lucy Fitzsimmons, Yurii K. Gun'ko

Angewandte Chemie International Edition > 63 > 41 > n/a - n/a

Chirality in inorganic nanostructures has recently stimulated the attention of many researchers, both to unravel fundamental questions on the origin of chirality in inorganic and hybrid materials, as well as to introduce novel promising properties that are originated by the symmetry breaking. MoS₂ is one of the most investigated among the large family of layered transition metal dichalcogenides. In...

article

Bottom‐up Synthesis of Highly Chiral 1T Molybdenum Disulfide Nanosheets

Lorenzo Branzi, Lucy Fitzsimmons, Yurii K. Gun'ko

Angewandte Chemie > 136 > 41 > n/a - n/a

article

On‐Demand Bioactivation of Inert Materials With Plasma‐Polymerized Nanoparticles (Adv. Mater. 38/2024)

Miguel Santos, Praveesuda L. Michael, Timothy C. Mitchell, Yuen Ting Lam, more

Advanced Materials > 36 > 38 > n/a - n/a

Inert Material Bioactivation Important classes of materials employed in biomedical applications are chemically inert but are resistant to traditional surface modification. In article number 2311313, Miguel Santos, Steven G. Wise, and co‐workers describe a new class of plasma polymerised nanoparticles that can uniformly coat a range of synthetic and natural polymers mimicking the outcomes of plasma...

article

On‐Demand Bioactivation of Inert Materials With Plasma‐Polymerized Nanoparticles

Miguel Santos, Praveesuda L. Michael, Timothy C. Mitchell, Yuen Ting Lam, more

Advanced Materials > 36 > 38 > n/a - n/a

Conventional gas plasma treatments are crucial for functionalizing materials in biomedical applications, but have limitations hindering their broader use. These methods require exposure to reactive media under vacuum conditions, rendering them unsuitable for substrates that demand aqueous environments, such as proteins and hydrogels. In addition, complex geometries are difficult to treat, necessitating...

article

Improved post‐harvest preservation effects of mushroom (Agaricus bisporus) using bacterial cellulose nanocrystals‐gelatin/cinnamon essential oil emulsion coatings

Abdollah Golmohammadi, Mohammad Tahmasebi, Mahsa Sadat Razavi, Vahid Neysari‐Fam, more

International Journal of Food Science & Technology > 59 > 10 > 7528 - 7540

This work investigated the effect of bacterial cellulose nanocrystals (BCNCs)‐gelatin (GelA)/cinnamon essential oil (CEO) emulsion coatings (BCNCs‐GelA/CEO) on the shelf‐life extension of button mushrooms (Agaricus bisporus). CEO loadings between 1200 and 2400 μL/L were used in the coatings applied on the mushrooms' surface. The overall quality of coated mushrooms was monitored over 15 days of cold...

article

Biofunctional features of Pickering emulsified film from citrus peel pectin/limonene oil/nanocrystalline cellulose

Gracella Kusuma, Vincensius Marcellino, Ata Aditya Wardana, Laras Putri Wigati, more

International Journal of Food Science & Technology > 59 > 10 > 7837 - 7851

The application of edible films can be an alternative solution for maintaining the quality of post‐harvest horticultural commodities. This study aimed to determine the effect of adding a stabiliser, cellulose nanocrystals (CNCs), on the functional characteristics of citrus peel pectin and limonene essential oil (LEO)‐based coatings. A formulation comprising pectin (0.5%), CNC (0.075%) and LEO (0.5%)...

article

Extracellular vesicles‐based theranostics for neurodegenerative diseases

Han Zhao, Ling Zhu, Chen Wang, Yanlian Yang

Wiley Interdisciplinary Reviews: Nanomedicine and Nanobiotechnology > 16 > 5 > n/a - n/a

With the accelerated aging of the global population, the incidence of neurodegenerative diseases (NDDs) is increasing year by year. Because of the presence of the blood–brain barrier (BBB), the low concentration of the biomarkers in peripheral blood and the low penetration rate of the drugs through BBB into brain hinders the development of diagnosis and treatment of NDDs. As an effective mediator...

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Search results

Adaptacja algorytmu prowadzenia procesu foresightu technologicznego w jednostkach badawczo-rozwojowych

Nanotechnology in Mexico: Global trends and national implications for policy and regulatory issues

In vivo human time-exposure study of orally dosed commercial silver nanoparticles

Drug delivery systems based on nucleic acid nanostructures

Chitosans for delivery of nucleic acids

Investigation of nanocontact electron properties to the semiconductor islands

Femtosecond studies of coherent phonons in metallic nanoparticles embedded in dielectric films

In Situ Liquid Cell Transmission Electron Microscopy Observations of Growth and Anticorrosion Behaviors of AuCl₃ Shell on Au Nanobipyramids

Heteroatom‐Doped Graphene Nanoribbons: Precision Synthesis and Emerging Properties^†

Antimicrobial and anthelmintic effects of copper nanoparticles against Koi carp parasites and their toxicity

Combinatorial approach of cannabidiol and active‐targeted‐mediated photodynamic therapy in malignant melanoma treatment

Nanotechnology in plant nutrition: Ensuring sustainable agriculture through nanofertilizers

Zinc and silicon fertilizers in conventional and nano‐forms: Mitigating salinity effects in maize (Zea mays L.)

Bottom‐up Synthesis of Highly Chiral 1T Molybdenum Disulfide Nanosheets

Bottom‐up Synthesis of Highly Chiral 1T Molybdenum Disulfide Nanosheets

On‐Demand Bioactivation of Inert Materials With Plasma‐Polymerized Nanoparticles (Adv. Mater. 38/2024)

On‐Demand Bioactivation of Inert Materials With Plasma‐Polymerized Nanoparticles

Improved post‐harvest preservation effects of mushroom (Agaricus bisporus) using bacterial cellulose nanocrystals‐gelatin/cinnamon essential oil emulsion coatings

Biofunctional features of Pickering emulsified film from citrus peel pectin/limonene oil/nanocrystalline cellulose

Extracellular vesicles‐based theranostics for neurodegenerative diseases

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