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Journal articles on the topic 'Silver manipulation'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Thanikaivalan, E., R. Jothilakshmi, and P. Murugakoothan. "Silver Nanoparticles - Trapping and Manipulation." Materials Science Forum 832 (November 2015): 123–31. http://dx.doi.org/10.4028/www.scientific.net/msf.832.123.

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Silver nanoparticles with different radii were synthesized using silver nitrate solution added with sodium borohydride solution at different ratios. The synthesized silver nanoparticles of radii 25.3 nm, 31 nm, 33.6 nm and 37.1 nm were characterized by transmission electron microscopy (TEM) and UV-vis absorption spectroscopy. The synthesized silver nanoparticles exhibit spherical morphology for all radii. The silver nanoparticles exhibit the plasmon resonance band between 390 nm – 400 nm. The optical trapping effect of Gaussian beam acting on a silver nanoparticle in Rayleigh regime was studied. The optical scattering and optical gradient forces were calculated for silver nanoparticles of different radii.

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2

Crain, Susan, Seth Hoelscher, and Jeffrey Jones. "Fixing the Fix for Silver and Gold." ACRN Journal of Finance and Risk Perspectives 9, no. 1 (2020): 177–97. http://dx.doi.org/10.35944/jofrp.2020.9.1.013.

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Accusations of price manipulation in the silver and gold markets have emerged in recent years. In an effort to increase transparency, the London spot price “fixing” mechanism was recently changed from an opaque negotiation process among a small number of dealer banks to a more observable auction platform system with more participants and public reporting. This change in the price fixing process raises questions about whether manipulation was occurring prior to the fix change and whether any perceived manipulation has since been reduced. Our results suggest that the changes to the price fixing process have impacted volatilities and prices within the silver and gold markets which could be an indicator of manipulation prior to the change.

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3

FUKUI, Satoru, Hjronori TOHMYOU, and Masumi SAKA. "T0301-2-1 Manipulation and welding of silver nanowires." Proceedings of the JSME annual meeting 2010.8 (2010): 177–78. http://dx.doi.org/10.1299/jsmemecjo.2010.8.0_177.

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4

Batten, Jonathan A., Brian M. Lucey, and Maurice Peat. "Gold and silver manipulation: What can be empirically verified?" Economic Modelling 56 (August 2016): 168–76. http://dx.doi.org/10.1016/j.econmod.2016.03.005.

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5

Bailey, R. E., and Jeffrey Williams. "Manipulation on Trial: Economic Analysis and the Hunt Silver Case." Economic Journal 106, no. 439 (November 1996): 1785. http://dx.doi.org/10.2307/2235221.

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6

Yan, Zijie, Justin E. Jureller, Julian Sweet, Mason J. Guffey, Matthew Pelton, and Norbert F. Scherer. "Three-Dimensional Optical Trapping and Manipulation of Single Silver Nanowires." Nano Letters 12, no. 10 (September 10, 2012): 5155–61. http://dx.doi.org/10.1021/nl302100n.

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7

Tanabe, Ichiro, and Tetsu Tatsuma. "Plasmonic Manipulation of Color and Morphology of Single Silver Nanospheres." Nano Letters 12, no. 10 (September 6, 2012): 5418–21. http://dx.doi.org/10.1021/nl302919n.

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8

HEILMANN, A., A. D. MÜLLER, and J. WERNER. "SIZE AND SHAPE MANIPULATION OF SILVER AND INDIUM SMALL PARTICLES BY ELECTRON-BEAM IRRADIATION." Surface Review and Letters 03, no. 01 (February 1996): 1113–19. http://dx.doi.org/10.1142/s0218625x96001996.

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Small particles of indium or silver were encapsulated in a thin polymer film matrix by simultaneous plasma polymerization and metal evaporation. Electron-beam irradiation inside transmission electron microscopes and with a microfocus electron source was used to induce changes of the encapsulated particle size and shape. At encapsulated indium particles, substantial microstructural changes were observed during the electron-beam irradiation in the electron microscope. Selected area diffraction demonstrates that indium oxide was formed during the electron irradiation. Additional in situ annealing demonstrates that the indium melting point was not reached during electron-beam-induced local heating of the indium particles. At electron-beam irradiation of plasma polymer films with encapsulated silver particles by using a microfocus electron source, the coalescence of the silver particles can be limited to the irradiated areas of the films.

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9

Ozawa, Ryota, Sanghee Nah, John T. Fourkas, and Shoji Maruo. "G2-1-1 Manipulation of silver nanowires using an optical vortex." Proceedings of the Symposium on Micro-Nano Science and Technology 2012.4 (2012): 25–26. http://dx.doi.org/10.1299/jsmemnm.2012.4.25.

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10

Schomaker, Jennifer M., Logan E. Vine, and Emily E. Zerull. "Taming Nitrene Reactivity with Silver Catalysts." Synlett 32, no. 01 (July 29, 2020): 30–44. http://dx.doi.org/10.1055/s-0040-1707197.

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Nitrene transfer (NT) is a convenient strategy to directly transform C–H bonds into more valuable C–N bonds and exciting advances have been made to improve selectivity. Our work in silver-based NT has shown the unique ability of this metal to enable tunable chemo-, site-, and stereoselective reactions using simple N-dentate ligand scaffolds. Manipulation of the coordination environment and noncovalent interactions around the silver center furnish unprecedented catalyst control in selective NT and provide insights for further improvements in the field.1 Introduction1.1 Strategies for Nitrene Transfer1.2 Brief Summary of Chemocatalyzed Nitrene Transfer1.3 Focus of this Account2 Challenges in Chemocatalyzed Nitrene Transfer2.1 Reactivity Challenges2.2 Selectivity Challenges2.3 Chemoselective Nitrene Transfer2.4 Site-Selective Nitrene Transfer2.5 Enantioselective Nitrene Transfer3 Summary and Perspective3.1 Future Opportunities and Challenges3.2 Conclusion

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11

Bonezzi, Jason, Tulashi Luitel, and Aliaksei Boika. "Electrokinetic Manipulation of Silver and Platinum Nanoparticles and Their Stochastic Electrochemical Detection." Analytical Chemistry 89, no. 17 (August 10, 2017): 8614–19. http://dx.doi.org/10.1021/acs.analchem.7b02807.

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12

Matveeva, Evgenia G., Tanya Shtoyko, Ignacy Gryczynski, Irina Akopova, and Zygmunt Gryczynski. "Fluorescence quenching/enhancement surface assays: Signal manipulation using silver-coated gold nanoparticles." Chemical Physics Letters 454, no. 1-3 (March 2008): 85–90. http://dx.doi.org/10.1016/j.cplett.2008.01.075.

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13

Durham, Jessica L., Kevin Kirshenbaum, Esther S. Takeuchi, Amy C. Marschilok, and Kenneth J. Takeuchi. "In-situ Formation of a Series of AgFeO2/γ-Fe2O3 Composites: Impact on Electrochemical Performance." MRS Advances 1, no. 6 (2016): 389–94. http://dx.doi.org/10.1557/adv.2016.5.

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ABSTRACTA paradigm for the synthetic manipulation of composition and crystallite size of bimetallic composites via a low-temperature, aqueous co-precipitation technique employing non-stoichiometric ratios of starting materials, AgNO3 and Fe(NO3)3, is introduced. In-situ formation of composites containing crystalline silver ferrite, AgFeO2, and nanocrystalline maghemite, γ-Fe2O3 is demonstrated and established by Raman spectroscopic and X-ray absorption analyses. As a cathode, the lowest silver content composites exhibited profoundly improved electrochemical performance, with reversible capacities approximately 100% higher relative to stoichiometric AgFeO2, and demonstrate the lowest capacity fade.

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14

Aluicio-Sarduy, Eduardo, Simone Callegari, Diana Gisell Figueroa del Valle, Andrea Desii, Ilka Kriegel, and Francesco Scotognella. "Electric field induced structural colour tuning of a silver/titanium dioxide nanoparticle one-dimensional photonic crystal." Beilstein Journal of Nanotechnology 7 (October 6, 2016): 1404–10. http://dx.doi.org/10.3762/bjnano.7.131.

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An electric field is employed for the active tuning of the structural colour in photonic crystals, which acts as an effective external stimulus with an impact on light transmission manipulation. In this work, we demonstrate structural colour in a photonic crystal device comprised of alternating layers of silver nanoparticles and titanium dioxide nanoparticles, exhibiting spectral shifts of around 10 nm for an applied voltage of only 10 V. The accumulation of charge at the metal/dielectric interface with an applied electric field leads to an effective increase of the charges contributing to the plasma frequency in silver. This initiates a blue shift of the silver plasmon band with a simultaneous blue shift of the photonic band gap as a result of the change in the silver dielectric function (i.e. decrease of the effective refractive index). These results are the first demonstration of active colour tuning in silver/titanium dioxide nanoparticle-based photonic crystals and open the route to metal/dielectric-based photonic crystals as electro-optic switches.

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15

Grosserueschkamp, Marc, Christoph Nowak, Wolfgang Knoll, and Renate L. C. Naumann. "Time-resolved surface-enhanced resonance Raman spectro-electrochemistry of heme proteins." Spectroscopy 24, no. 1-2 (2010): 125–29. http://dx.doi.org/10.1155/2010/815817.

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Heme proteins such as cytochrome c (cc) play a fundamental role in many biological processes. Surface-enhanced resonance Raman spectroscopy (SERRS) combined with electrochemical methods is an ideal tool to study the redox processes of heme proteins. In this context we designed a new measuring cell allowing for simultaneous electrochemical manipulation and high sensitive SERRS measurements of heme proteins. The measuring cell is based on an inverted rotating disc electrode for excitation by using a confocal Raman microscope. Furthermore, we developed a SER(R)S-active silver modified silver substrate for spectro-electrochemical applications. For this purpose silver nanoparticles (AgNPs) were adsorbed on top of a planar silver surface. The substrate was optimized for an excitation wavelength of 413 nm corresponding to the resonance frequency of heme structures. An enhancement factor of 105was achieved. The high performance of the new measuring cell in combination with the new silver substrate was demonstrated using cc as a reference system.

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16

Polyakov, Boris, Sergei Vlassov, Leonid M. Dorogin, Jelena Butikova, Mikk Antsov, Sven Oras, Rünno Lõhmus, and Ilmar Kink. "Manipulation of nanoparticles of different shapes inside a scanning electron microscope." Beilstein Journal of Nanotechnology 5 (February 5, 2014): 133–40. http://dx.doi.org/10.3762/bjnano.5.13.

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In this work polyhedron-like gold and sphere-like silver nanoparticles (NPs) were manipulated on an oxidized Si substrate to study the dependence of the static friction and the contact area on the particle geometry. Measurements were performed inside a scanning electron microscope (SEM) that was equipped with a high-precision XYZ-nanomanipulator. To register the occurring forces a quartz tuning fork (QTF) with a glued sharp probe was used. Contact areas and static friction forces were calculated by using different models and compared with the experimentally measured force. The effect of NP morphology on the nanoscale friction is discussed.

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17

Wales, RG. "From uncommitted to committed embryonic cells: opportunities for their study and manipulation." Reproduction, Fertility and Development 7, no. 5 (1995): 983. http://dx.doi.org/10.1071/rd9950983.

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This paper offers a broad review of the methodologies used for the study of embryonic development and for the manipulation of embryonic cells. It was written in the context of the silver anniversary of the Australian Society for Reproductive Biology and places particular emphasis on the achievements of Australian scientists in this field. It has attempted to place recent advancements in some historical perspective, to examine the present 'state of the art' in reproductive technologies and to consider future directions.

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18

Liu, Hong-Zhi, Sen Wu, Jun-Ming Zhang, Hui-Tian Bai, Fan Jin, Hai Pang, and Xiao-Dong Hu. "Strategies for the AFM-based manipulation of silver nanowires on a flat surface." Nanotechnology 28, no. 36 (August 8, 2017): 365301. http://dx.doi.org/10.1088/1361-6528/aa7e35.

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19

hellman, mimi. "Elusive Temptations." Gastronomica 11, no. 2 (2011): 7–11. http://dx.doi.org/10.1525/gfc.2011.11.2.7.

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This essay discusses the aesthetic, culinary, and social resonances of an eighteenth-century silver tureen in the collections of the J. Paul Getty Museum. Produced in the Paris workshop of Thomas Germain and probably owned by a Portuguese archbishop, the tureen is embellished with crustaceans and vegetables cast in part from nature. By linking the manipulation of silver to the transformative treatment of ingredients in eighteenth-century cuisine, and by reimagining the tureen’s visual effects and conversational potential in the context of a lavish, candle-lit banquet, the essay explores how this artful object would have simultaneously invited and resisted the attention of eighteenth-century diners.

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20

Lee, Kun-Hong, Kung-Ming Huang, Wei-Lung Tseng, Tai-Chia Chiu, Yang-Wei Lin, and Huan-Tsung Chang. "Manipulation of the Growth of Gold and Silver Nanomaterials on Glass by Seeding Approach." Langmuir 23, no. 3 (January 2007): 1435–42. http://dx.doi.org/10.1021/la061880j.

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21

Kacmaz, Sibel, Kadriye Ertekin, Ozlem Oter, Cevher Gundogdu Hizliateş, Yavuz Ergun, and Erdal Celik. "Manipulation of pH induced sensitivity of a fluorescent probe in presence of silver nanoparticles." Journal of Luminescence 168 (December 2015): 228–35. http://dx.doi.org/10.1016/j.jlumin.2015.07.056.

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22

Penttilä, Heikki, Olga Beliuskina, Laetitia Canete, Antoine de Roubin, Tommi Eronen, Marjut Hukkanen, Anu Kankainen, et al. "Radioactive ion beam manipulation at the IGISOL-4 facility." EPJ Web of Conferences 239 (2020): 17002. http://dx.doi.org/10.1051/epjconf/202023917002.

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The IGISOL-4 facility in the JYFL Accelerator Laboratory of the University of Jyvaskyla (JYFL-ACCLAB) produces low-energy radioactive ion beams, primarily for nuclear spectroscopy, utilizing an ion guide-based, ISOL-type mass separator. Recently, new ion manipulation techniques have been introduced at the IGISOL-4 including the application of the PI-ICR (Phase-Imaging Ion Cyclotron Resonance) technique at the JYFLTRAP Penning trap, as well as commissioning of a Multi-Reflection Time-Of-Flight (MR-TOF) separator/spectrometer. The successful operation of the MR-TOF also required significant improvement of the Radio-Frequency Quadrupole (RFQ) cooler and buncher device beam pulse time structure. In addition, laser ionization techniques have been developed for particular cases, for example, a hot cavity laser ion source for silver production. A new stable isotope ion source and a beam line has been introduced for tuning and calibration purposes. In addition to the installations at the IGISOL-4 facility, the extension of the vacuum-mode recoil separator MARA (Mass Analysing Recoil Apparatus), MARA-LEB (MARA Low Energy Branch) has been under development. MARA-LEB will utilize the gas-cell technique and laser ionization to convert MeV-scale radioactive beams to low-energy ones.

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23

Khan, M. Z. H., F. K. Tarek, M. Nuzat, M. A. Momin, and M. R. Hasan. "Rapid Biological Synthesis of Silver Nanoparticles from Ocimum sanctum and Their Characterization." Journal of Nanoscience 2017 (August 20, 2017): 1–6. http://dx.doi.org/10.1155/2017/1693416.

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With development of nanotechnology, the biological synthesis process deals with the synthesis, characterization, and manipulation of materials and further development at nanoscale which is the most cost-effective and eco-friendly and rapid synthesis process as compared to physical and chemical process. In this research silver nanoparticles (AgNPs) were synthesized from silver nitrate (AgNO3) aqueous solution through eco-friendly plant leaf broth of Ocimum sanctum as reactant as well as capping agent and stabilizer. The formation of AgNPs was monitored by ultraviolet-visible spectrometer (UV-vis) and Fourier transform infrared (FTIR) spectroscopy. X-ray diffraction (XRD) and scanning electronic microscopy (SEM) have been used to characterize the morphology of prepared AgNPs. The peaks in XRD pattern are in good agreement with that of face-centered-cubic (FCC) form of metallic silver. Thermal gravimetric analysis/differential thermal analysis (TGA/DTA) results confirmed the weight loss and the exothermic reaction due to desorption of chemisorbed water. The average grain size of silver nanoparticles is found to be 29 nm. The FTIR results indicated that the leaf broths containing the carboxyl, hydroxyl, and amine groups are mainly involved in fabrication of silver AgNPs and proteins, which have amine groups responsible for stabilizing AgNPs in the solution.

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24

Yin, Chengjie, Longgen Guo, Chunlong Yi, Congqiang Luo, and Leyi Ni. "Physicochemical Process, Crustacean, andMicrocystisBiomass Changes In Situ Enclosure after Introduction of Silver Carp at Meiliang Bay, Lake Taihu." Scientifica 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/9643234.

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In order to control cyanobacteria blooms with silver carp in Lake Taihu, an in situ experiment was carried out by stocking silver carp at a biomass of 35, 70, and 150 g m-3and no carp control in waterproof enclosures. Physicochemical water parameters and biomass of plankton were measured in enclosures to evaluate the suitable stocking density of silver carp for relieving internal nutrients and constraining cyanobacteria growth in Lake Taihu. It is found that the 35 g m-3silver carp group and 70 g m-3silver carp group presented lower total phosphorus, lower chlorophyll-a, and higher water transparency. Increased nitrogen to phosphorus ratio, which indicated the result of algae decline in fish presence enclosures, was attributed to decline of phosphorus. Phosphorus decline also exerted limitation on reestablish of cyanobacteria bloom. Crustacean zooplankton biomass andMicrocystisbiomass decreased significantly in fish presence enclosures. Silver carp could be more effective to regulate algae bloom in enclosures with dense cyanobacteria. Therefore, nonclassic manipulation is supposed to be appropriate method to get rid of cyanobacteria blooms in Lake Taihu by stocking 35 to 70 g m-3silver carp in application.

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25

Willett, DJ. "Use of scale patterns to evaluate stocking success of silver perch, Bidyanus bidyanus (Mitchell), released at two different sizes." Marine and Freshwater Research 47, no. 5 (1996): 757. http://dx.doi.org/10.1071/mf9960757.

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A study was conducted to determine relative success of stocking silver perch (Bidyanus bidyanus) at two different sizes: 35 mm and 50 mm total length. By purposeful manipulation of growth rates of pre-stocked fish it was possible to induce unique markers in scale circulus patterns, thus differentially marking the two size-groups. The scale circulus data were acquired with automated video-digitizing equipment. Both size-classes were stocked into two south-eastern Queensland impoundments. Relative stocking success after two years was quantified by sampling surviving silver perch and using discriminant function analysis to assign individuals to their respective size-at-release groups. Relative survival of fish stocked at 35 mm and at 50 mm was not significantly different in either impoundment. Post-stocking growth rates of 35 mm fish were not compromised due to their smaller size at release. From a management perspective, this suggests that 35 mm is a more cost-effective release size of silver perch than 50 mm. This trial demonstrates the feasibility of using scale circulus patterns to differentially mark multiple groups of fingerlings for such controlled experiments.

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26

Sato, Masahiko, Janice Herring, John Kim, and Eli Lilly. "Reflected polarized darkfield imaging of bone surfaces." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (August 1992): 956–57. http://dx.doi.org/10.1017/s0424820100129413.

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Reflected polarized light microscopy (Fig. 1A) was used previously to generate high contrast images of birefringent and light scattering samples, including bone surfaces and autoradiographic specimens. We now present a modification (Fig. 1B) of the Gullberg system with improved sensitivity for the characterization of bone specimens and quantitation of silver granules on autoradiographic specimens. Reflected imaging techniques were useful to generate high contrast images superior to transmitted light strategies, and both of the strategies presented can be adapted easily to any fluorescence microscope.Reflected light produced images free of refractile noise from materials through the thickness of the specimen which detracts from transmission darkfield imaging of silver grains and brightfield imaging of bone surfaces. The use of crossed polars also eliminated noise from stray light reflected off of internal microscope elements. The rotatable lambda/4 plate mounted on the objective front element (Fig. 1A) allowed considerable manipulation of image contrast, permitting dual imaging of silver granules, birefringent tissues in autoradiographic specimens and the surface topography of bone specimens by rotating the lambda/4 plate to 45°.

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27

Cheng, Wen-Tung, and Yu-Wen Chih. "Manipulation of silver nanostructures using supercritical fluids in the presence of polyvinylpyrrolidone and ethylene glycol." Journal of Supercritical Fluids 54, no. 2 (August 2010): 272–80. http://dx.doi.org/10.1016/j.supflu.2010.05.006.

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28

Swamy, K. M. K., Ha Na Kim, Jung Huyn Soh, Youngmee Kim, Sung-Jin Kim, and Juyoung Yoon. "Manipulation of fluorescent and colorimetric changes of fluorescein derivatives and applications for sensing silver ions." Chemical Communications, no. 10 (2009): 1234. http://dx.doi.org/10.1039/b819538b.

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29

Wan, Tao, Peiyuan Guan, Xinwei Guan, Long Hu, Tom Wu, Claudio Cazorla, and Dewei Chu. "Facile Patterning of Silver Nanowires with Controlled Polarities via Inkjet-Assisted Manipulation of Interface Adhesion." ACS Applied Materials & Interfaces 12, no. 30 (July 9, 2020): 34086–94. http://dx.doi.org/10.1021/acsami.0c07950.

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30

Shi, Chao, Yi Zhang, Claire Gu, Leo Seballos, and Jin Z. Zhang. "Manipulation and light-induced agglomeration of carbon nanotubes through optical trapping of attached silver nanoparticles." Nanotechnology 19, no. 21 (April 21, 2008): 215304. http://dx.doi.org/10.1088/0957-4484/19/21/215304.

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31

Yang, Zhuo, and Dengfeng Kuang. "Visible-broadband Localized Vector Vortex Beam Generator with a Multi-structure-composited Meta-surface." Nanomaterials 9, no. 2 (January 29, 2019): 166. http://dx.doi.org/10.3390/nano9020166.

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We demonstrate a vortex beam generator meta-surface that consists of silver structures and graphene layers. The miniature material is just a few microns in size and the working part is only a few hundred nanometers thick. With the incidence of the linearly polarized beam, the meta-surface generates high-localized vector vortex beam with a high proportion of the longitudinal component. Being compared with the constituent part of the meta-surface, the multi-structure-combined meta-surface increases the localization by 250% and the longitudinal component proportion by 200%. Moreover, the above artificial material can generate vortex beams in broadband within the visible light range. These novel optical properties have the potential to improve the precision and sensitivity of nanoparticle manipulation. The study serves as a foundation in optical miniaturization and integration, nanoparticle manipulation, high-efficiency optical and quantum communication, and light-driven micro-tools.

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32

Lu, Xiwen, Jinhang Liu, Ye Ding, Lijun Yang, Zhan Yang, and Yang Wang. "Simulation and fabrication of carbon nanotube–nanoparticle interconnected structures." Mechanical Sciences 12, no. 1 (April 27, 2021): 451–59. http://dx.doi.org/10.5194/ms-12-451-2021.

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Abstract. With the rapid development of nanotechnology, the size of a device reaches sub-nanometer scale. The larger resistivity of interconnect leads to serious overheating of integrated circuits. Silicon-based electronic devices have also reached the physical limits of their development. The use of carbon nanotubes instead of traditional wires has become a new solution for connecting nano-structures. Nanocluster particles serving as brazing material play an important role in stabilizing the connection of carbon nanotubes, which places higher demands for nanoscale manipulation techniques. In this paper, the dynamic processes under different operating scenarios were simulated and analyzed, including probe propulsion nanoparticle operation, probe pickup nanoparticle operation and probe pickup nanocluster particle operation. Then, the SEM (Scanning Electron Microscope) was used for nanoparticle manipulation experiments. The smallest unit of carbon nanotube wire was obtained by three-dimensional (3D) construction of a carbon nanotube–silver nanocluster particle (CN-AgNP), which verified the feasibility of 3D manipulation of carbon nanotube wire construction. The experiments on the construction of carbon nanotube–nanocluster particle structures in three-dimensional operation were completed, and the smallest unit of carbon nanotube wire was constructed. This nano-fabrication technology will provide an efficient and mature technical means in the field of nano-interconnection.

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33

Tao, Jingqi, Ni Liu, Shuxin Li, Jun Shi, and Shulin Ji. "Structural manipulation of silver nanowire transparent conductive films for optoelectrical property optimization in different application fields." Thin Solid Films 729 (July 2021): 138679. http://dx.doi.org/10.1016/j.tsf.2021.138679.

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34

Koo, Bon-Woong, Seung-Pyo Hong, Seong-Il Kim, Chan S. Kang, Sang-Sub Han, Kyu H. Oh, and Young-Woon Kim. "Design and Application of a Novel In Situ Nano-Manipulation Stage for Transmission Electron Microscopy." Microscopy and Microanalysis 21, no. 2 (March 17, 2015): 298–306. http://dx.doi.org/10.1017/s1431927615000239.

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AbstractA novel nano-scale manipulator capable of handling low-dimensional materials with three-dimensional linear motion, gripping action, and push–pull action of the gripper was developed for an in situ experiment in transmission electron microscopy. X-Y-Z positioning and push–pull action were accomplished by a piezotubing system, combined with a specially designed assembly stage that consisted of a lever-action gripping tip backed by a push–pull piezostack. The gripper tip consisted of tungsten wire fabricated by electrochemical etching followed by a focused ion beam process. Performance of the nano-scale manipulator was demonstrated in a grab-and-pick test of a single silver nanowire and in an in situ tensile test of a pearlitic steel sample with a specific orientation.

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35

Barriada, Jose L., Jason B. Truscott, and Eric P. Achterberg. "Automation of a flow injection system for the determination of dissolved silver at picomolar concentrations in seawater with inductively coupled plasma mass spectrometry." Journal of Automated Methods and Management in Chemistry 25, no. 4 (2003): 93–100. http://dx.doi.org/10.1155/s1463924603000166.

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An automated flow injection system for the determination of dissolved silver at ultratrace concentrations in seawater, and controlled under LabVIEW, is described. The flow injection system allows online processing of seawater samples before their analysis using a magnetic sector inductively coupled plasma mass spectrometry (MS-ICP-MS) instrument. Samples were analysed with a minimum amount of manipulation, thereby reducing the risk of contamination. In addition, the flow injection approach with incorporation of an anion exchange minicolumn allowed ready removal of analytical interferences caused by the saline matrix. The software allowed full control of all flow injection components (valves and pumps) and removed manual time control and, therefore, operator errors. The optimized system was capable of five sample injections per h, including preconcentration and wash steps. The limit of detection was 0.5 pM for a 240-s sample load time, which allowed the determination of dissolved silver in open ocean waters, where picomolar concentration levels are typically encountered.

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36

Knight, C. H. "Physiological Manipulation of Milk Protein Content." Proceedings of the British Society of Animal Production (1972) 1994 (March 1994): 7. http://dx.doi.org/10.1017/s0308229600025617.

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The aim of this review is to assess to what extent the biological processes of milk protein synthesis and secretion might be manipulated to the benefit of the milk producer, processor and consumer. There is considerable impetus for such an analysis. A completely new ‘agroceutical’ industry is in prospect, utilising novel biotechnology to produce high-value, non-mammary proteins in the milk of transgenic dairy animals (Carver et al., 1993). Nearer to home, the milk processing industry and the consumer may wish to see more modest modification of endogenous milk proteins, making use of naturally occurring genetic variants or, again, using biotechnological approaches (Dalgleish, 1992). Exciting as such possibilites are, I intend to set them to one side and concentrate on the issue that most immediately concerns the dairy farmer: how can he increase his milk protein concentration and, thereby, his profitability. Retrospective analysis reveals some small scope for improvement; between 1985 and 1990, compositional quality data (the basis for milk payment) revealed an increase in protein content from 32.6 to 32.8 g/1, an improvement of 0.6%. Over the same period, milk fat increased by 3.1% and recorded milk yields by 6.4% (all data from UK Dairy Facts and Figures, Federation of United Kingdom Milk Marketing Boards), suggesting that protein content is least amenable to manipulation. Gross production figures of this sort can be misleading, but more controlled experimentation supports the contention. By reducing the forage to concentrate ratio, Rook et al. (1992) increased total protein yield by an impressive 200 g/d. However, only one-quarter of this effect was due to improved protein content, the remainder coming from increased milk yield. Endocrine manipulation of milk production gives a similarly discouraging picture. Growth hormone treatment undoubtedly increases protein yield, but it does so by increasing the volume of milk produced with no detectable effect on protein content (Bauman, 1992). Milk production is also responsive to milking frequency but, once again, the effect is on yield of milk rather than on the protein content of that milk (Hillerton et al., 1990). So, where is the silver lining? Does biotechnology have the answer; can the presence, in mammary cells, of extra copies of correctly expressed milk protein or foreign protein genes markedly increase protein content? In Edinburgh, transgenic sheep are producing milk containing as much as 30 g/1 of human alpha- 1-antitrypsin (Carver et al.. 1993), representing some 50% or the total protein content (Wright et al., 1991). There is good anecdotal reason for believing that total protein content is elevated (one sheep reached 70 g/1), but the definitive statistical analysis is, so far, lacking. We have examined mammary function in transgenic mice expressing the sheep beta-lactoglobulin gene and compared them with non-transgenic controls (Wilde et al.,1992). Expression was good: beta-lactoglobulin accounted for 30% of all the protein present. But, at 95 and 106 mg/ml. respectively, transgenic mouse milk contained no more total protein than that of control mice. The encouraging feature of this work was that mammary tissue from transgenic mice cultured in vitro synthesised 41 % more total protein than did tissue from control mice, a significant difference (P ˂ 0.05).It would appear that the tissue itself had the intrinsic capability for increased protein synthesis, but a block or some sort was imposed in vivo. The next step is to discover the nature of that block, and to do so we must understand the complex series of events leading ultimately to protein secretion into the alveolar lumen.

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Wen, Hongjing, Bin Wang, Hongbo Zhu, Shiyu Wu, Xiaoxuan Xu, Xiangping Li, and Yaoyu Cao. "Security-Enhanced 3D Data Encryption Using a Degradable pH-Responsive Hydrogel." Nanomaterials 11, no. 7 (July 1, 2021): 1744. http://dx.doi.org/10.3390/nano11071744.

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Based on degradable pH-responsive hydrogel, we report on an enhanced three-dimensional data encryption security technique in which a pH value is used for information manipulation. Featuring three types of states upon the pH value variation, namely, shrinkage, expansion and degradation, the hydrogel renders a limited pH value window as the “key” for information decryption. The pH-dependent shrinkage-to-expansion conversion of the hydrogel leads to a threshold pH value for retrieving the recorded data, whilst the degradability of the hydrogel, which can be tuned by adjusting the composition ratio of PEGDA/AAc, gives rise to a second threshold pH value for irreversibly sabotaging the retrieved data. Pre-doping silver ions in the hydrogel facilitates explicit recording and reading of binary data in forms of three-dimensional silver patterns through photoreduction and scattering, respectively, with a femtosecond laser. By accurately matching the vertical spacing of the encoded silver nanopatterns with the diffraction-limited focal depth of the decryption microscope, we can tune the pH value to encrypt and retrieve information recorded in layers and set a critical pH value to smash encoded information, which proves a highly secured 3D data encoding protocol. This strategy can effectively enrich data encryption techniques, vastly enhancing data security within unattained chemical dimensions.

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Pliatsikas, Nikolaos, Andreas Jamnig, Martin Konpan, Andreas Delimitis, Gregory Abadias, and Kostas Sarakinos. "Manipulation of thin silver film growth on weakly interacting silicon dioxide substrates using oxygen as a surfactant." Journal of Vacuum Science & Technology A 38, no. 4 (July 2020): 043406. http://dx.doi.org/10.1116/6.0000244.

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YOKOYAMA, Kosuke, Ryota OZAWA, and Shoji MARUO. "2A2-C08 Manipulation and fixation of silver nanowires using dual-beam optical trap using spatial light modulation." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2015 (2015): _2A2—C08_1—_2A2—C08_2. http://dx.doi.org/10.1299/jsmermd.2015._2a2-c08_1.

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Fukushima, M., N. Takamura, B. H. Kim, M. Nakagawa, L. Sun, and Y. Zheng. "The responses of an aquatic ecosystem to the manipulation of the filter-feeding silver carp (Hypophthalmichthys molitrix)." SIL Proceedings, 1922-2010 27, no. 2 (October 2000): 1033–39. http://dx.doi.org/10.1080/03680770.1998.11901396.

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El Kadiri, Selma, and Hanane Baybay. "Localized cutaneous argyria: a new observation." Our Dermatology Online 12, no. 1 (January 2, 2021): 30–32. http://dx.doi.org/10.7241/ourd.20211.7.

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A 27-year-old female, a radiotherapy technician, was referred to our consultation with a localized gray pigmentation of the perinasal area. The condition had been asymptomatic for its entire duration of 2 years. A dermatological examination found a localized bluish-gray pigmentation in the perinasal area. Dermoscopy revealed an annular bluish-gray patch. Her occupation involved the manufacture and micromanipulation of machines, which required handling pure iron, nickel, copper, and silver with bare hands. She also reported a tic of flaring the nose. A skin biopsy was performed and histology revealed deposits of fine granules in the basal cell layer of eccrine sweat glands and along the elastic fibers of the superficial dermis, conforming with the diagnosis of argyria. The patient was given laser Q-switching treatment and showed a measurable improvement. This case studies a currently rare dermatological curiosity. Argyria is a disease caused by chronic absorption of silver-rich materials. This is the first description of argyria following the manipulation of radiopaque caches with a tic of flaring the nose.

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Liu, Gui-Shi, Mengyi He, Ting Wang, Li Wang, Zhi He, Runze Zhan, Lei Chen, et al. "Optically Programmable Plateau–Rayleigh Instability for High-Resolution and Scalable Morphology Manipulation of Silver Nanowires for Flexible Optoelectronics." ACS Applied Materials & Interfaces 12, no. 48 (September 2, 2020): 53984–93. http://dx.doi.org/10.1021/acsami.0c11682.

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43

Stojkovska, Jasmina, Jovana Zvicer, Zeljka Jovanovic, Vesna Miskovic-Stankovic, and Bojana Obradovic. "Controlled production of alginate nanocomposites with incorporated silver nanoparticles aimed for biomedical applications." Journal of the Serbian Chemical Society 77, no. 12 (2012): 1709–22. http://dx.doi.org/10.2298/jsc121108148s.

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Production of nanocomposite alginate microbeads with electrochemically synthesized silver nanoparticles (AgNPs) based on electrostatic extrusion technique was investigated with respect to potentials for utilization in pharmaceutical and biomedical applications. It was shown that electrochemical synthesis of AgNPs results in reduction of practically all Ag+ ions present in the initial solution yielding stable Ag/alginate colloid solutions that were demonstrated to be suitable for sterilization, manipulation, and electrostatic extrusion with retention of AgNPs. Presence of AgNPs in alginate colloid solutions had negligible effects on the size of the produced Ag/alginate microbeads, which was chiefly determined by the applied electrostatic potential during the extrusion. On the other hand, incorporation of AgNPs within the alginate hydrogel induced slight changes in biomechanical properties determined in a biomimetic bioreactor, so that packed beds of nanocomposite Ag/alginate microbeads exhibited slightly higher dynamic compression modulus as compared to that of control alginate microbeads (154 ? 4 and 141 ? 2 kPa, respectively). On the other hand, equilibrium unconfined compression modulus was significantly lower for nanocomposite microbeads as compared to that of controls (34 ? 2 and 47 ? 0.5 kPa, respectively).

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Isler, Iván Valdebenito. "Biotechnology applied to salmoniculture." Revista Brasileira de Zootecnia 38, spe (July 2009): 36–42. http://dx.doi.org/10.1590/s1516-35982009001300004.

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This work presents a conceptual analysis of the main biotechnologies used in Chilean salmoniculture, which is based on the production of Atlantic salmon (Salmo salar, 356.407 t),silver salmon or coho (Oncorhynchus kisutch, 116.481 t), (O. tshawytscha, 2.062 t) and rainbow trout (O. mykiss, 189.178 t).These activities are focused on the photoperiod artificial manipulation to obtain out-of-season spawning, in the use of hormonal therapies which allow synchronizing the final oocyte maturation (FOM) and sexual maturity acceleration or the increase in milt volume produced by males. Such actions are carried out using GnRHa in doses close to 10 µg/kg of fish. Once sexual maturity is reached, in vitro manipulation of gamets must often be done due to either the prolonged storage (particularly milt) they have to undergo in order to transport them where fertilization takes place, or awaiting for the ichtiopathological results, usually taken to broodstock. The production of "all female" populations is also common. Frequently, these populations in rainbow trout are triploided (through shock temperature close to 28º C or pressure close to 8.000 psi) to obtain sterile species which improve productive perfomance of cultured populations without sexual maturity signs. Besides, the perspectives of industrial use of transgenic organisms in the culture of salmonids are analyzed.

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Sooksawat, Treerat, Traimat Boonthai, Subuntith Nimrat, and Verapong Vuthiphandchai. "Development of cryopreservation methods for silver barb ( Barbodes gonionotus , Bleeker) spermatozoa by manipulation of cooling rates in dry shipper." Aquaculture Research 50, no. 8 (May 24, 2019): 2289–99. http://dx.doi.org/10.1111/are.14114.

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Ghoshal, Sib Krishna, Masni Shafie@Haron, and M. R. Sahar. "Luminescence Features of Silver Nanoparticles Sensitized Samarium Doped Boro-Zinc Tellurite Glasses." Materials Science Forum 846 (March 2016): 96–101. http://dx.doi.org/10.4028/www.scientific.net/msf.846.96.

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Spectral features modification of rare earth (RE) doped tellurite glasses via controlled manipulation of metallic nanoparticles (NPs) is the current challenge in achieving enhanced lasing action. Triggering the localized surface plasmon resonance (SPR) of NPs in the glass generates tremendous applied interests especially in solid state lasers and nanophotonics. Despite several promising features of RE doped zinc-boro-tellurite glass, the low absorption and emission cross-section of RE ions prohibit them from fabricating efficient lasers. This drawback needed to overcome and significant enhancement of spectral features is required. Co-doping by rare earths and/or embedding metallic NPs (acts as sensitizer) are demonstrated to be the alternative route to surmount such shortcomings. Series of glass samples with composition 74TeO2–15B2O3–10ZnO– 1Sm2O3 – (x)Ag, where 0 ≤ x ≤ 0.1 mol% (in excess) are prepared using melt quenching method and the impacts of silver (Ag) NPs concentrations in altering their photoluminescence properties are inspected. The XRD spectra confirmed the amorphous nature of prepared glasses and the presence of Ag NPs are evidenced in EDX spectra. TEM micrographs revealed the distribution of Ag NPs with average size 7.2 nm. Absorption spectra revealed eight bands which most intense between 6F11/2 and 6F1/2. Photoluminescence spectra exhibited three prominent peaks corresponding to the transition from the excited state 4G5/2 to 6H5/2, 6H7/2, and 6H9/2 states, respectively. Our observation may be useful for the development of tellurite glass based nanophotonic devices.

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Fukui, Taisuke, Hiroyuki Naiki, and Sadahiro Masuo. "In Situ Observation of Surface-Enhanced Raman Scattering from Silver Nanoparticle Dimers and Trimers Fabricated Using Atomic Force Microscopy Manipulation." Journal of Physical Chemistry C 121, no. 35 (August 29, 2017): 19329–33. http://dx.doi.org/10.1021/acs.jpcc.7b03709.

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Kudryashov, Mikhail, Alexander Logunov, Daniela Gogova, Aleksandr Mashin, and Giovanni De Filpo. "Ag/PVP/PAN nanocomposites with triangular nanoprisms of silver synthesized by UV-induced polymerization: Morphology manipulation and optical properties tuning." Optical Materials 101 (March 2020): 109746. http://dx.doi.org/10.1016/j.optmat.2020.109746.

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Amano, Toshiyuki, and Hiroto Rakusho. "3-2 Manipulation of Material Perception by the Projection Mapping and Novel Representation of Gold and Silver Leaf art Beauty." Journal of The Institute of Image Information and Television Engineers 71, no. 1 (2017): 30–35. http://dx.doi.org/10.3169/itej.71.30.

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Kolek, Ludmiła, Maciej Pilarczyk, Michał Inglot, Bartłomiej Stonawski, and Joanna Szczygieł. "Observations of carbon-nitrogen manipulation and periphyton growth stimulation on fish farming in an integrated intensive-extensive aquaculture system." Fisheries & Aquatic Life 27, no. 4 (December 1, 2019): 169–77. http://dx.doi.org/10.2478/aopf-2019-0019.

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Abstract The results of observations of intensive sturgeon production integrated with an extensive earthen fish pond are described. The main objective of the study was to show how technological modifications applied to enhance nitrogen assimilation in ponds and nutrient retention in aquaculture products influenced fish production. Each of two integrated systems, A and B, consisted of four intensive fish tanks stocked with sturgeon and one extensive carp pond stocked with carp (Cyprinus carpio L.), silver carp (Hypophthalmichthys molitrix (Val.)) and common nase (Chondrostoma nasus L.). The fish tanks were supplied with water from the extensive pond and the effluent from the tanks was discharged into the same pond, which acted as a biological filter for fish production. System B pond was supplemented with carbohydrates (methanol) and plastic substrates for periphyton development that were installed to increase nutrient utilization. The results of the observations showed better water quality and higher fish production in pond B, but no differences were noted in sturgeon growth performance in system A. The combination of these modifications appeared to be an efficient way of increasing nutrient retention and improving water quality.

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