scholarly journals Synthetic biology for the development of bio-based binders for greener construction materials

2019 ◽  
Vol 9 (02) ◽  
pp. 474-485
Author(s):  
Virginia Echavarri-Bravo ◽  
Ian Eggington ◽  
Louise E. Horsfall
Keyword(s):  
Synthetic Biology ◽  
Construction Materials ◽  
Image Position

Abstract

G-protein-coupled receptors function as logic gates for nanoparticle binding using systems and synthetic biology approach

2019 ◽  
Vol 34 (11) ◽  
pp. 1854-1867 ◽  
Author(s):  
Aman Chandra Kaushik ◽  
Xueying Mao ◽  
Cheng-Dong Li ◽  
Yan Li ◽  
Dong-Qing Wei ◽  
...  
Keyword(s):  
Synthetic Biology ◽  
G Protein ◽  
Logic Gates ◽  
G Protein Coupled Receptors ◽  
Image Position ◽  
G Protein Coupled ◽  
Synthetic Biology Approach

Abstract

Synthetic biology with nanomaterials

2018 ◽  
Vol 8 (01) ◽  
pp. 100-106
Author(s):  
Sanhita Ray ◽  
Ahana Mukherjee ◽  
Pritha Chatterjee ◽  
Kaushik Chakraborty ◽  
Anjan Kr Dasgupta
Keyword(s):  
Synthetic Biology ◽  
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Abstract

scholarly journals Synthetic biology for fibers, adhesives, and active camouflage materials in protection and aerospace

2019 ◽  
Vol 9 (02) ◽  
pp. 486-504 ◽  
Author(s):  
Aled D. Roberts ◽  
William Finnigan ◽  
Emmanuel Wolde-Michael ◽  
Paul Kelly ◽  
Jonny J. Blaker ◽  
...  
Keyword(s):  
Synthetic Biology ◽  
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Abstract

scholarly journals Coupling synthetic biology and programmable materials to construct complex tissue ecosystems

2019 ◽  
Vol 9 (02) ◽  
pp. 421-432 ◽  
Author(s):  
Catherine S. Millar-Haskell ◽  
Allyson M. Dang ◽  
Jason P. Gleghorn
Keyword(s):  
Synthetic Biology ◽  
Image Position ◽  
Programmable Materials

Abstract

scholarly journals Synthetic biology meets bioprinting: enabling technologies for humans on Mars (and Earth)

2016 ◽  
Vol 44 (4) ◽  
pp. 1158-1164 ◽  
Author(s):  
Lynn J. Rothschild
Keyword(s):  
Synthetic Biology ◽  
Thermal Protection ◽  
Construction Materials ◽  
In Situ Extraction ◽  
Smart Fabrics ◽  
Robotic Missions ◽  
Life On Earth ◽  
The Cost ◽  
Traditional Approaches ◽  
Human Exploration

Human exploration off planet is severely limited by the cost of launching materials into space and by re-supply. Thus materials brought from Earth must be light, stable and reliable at destination. Using traditional approaches, a lunar or Mars base would require either transporting a hefty store of metals or heavy manufacturing equipment and construction materials for in situ extraction; both would severely limit any other mission objectives. Long-term human space presence requires periodic replenishment, adding a massive cost overhead. Even robotic missions often sacrifice science goals for heavy radiation and thermal protection. Biology has the potential to solve these problems because life can replicate and repair itself, and perform a wide variety of chemical reactions including making food, fuel and materials. Synthetic biology enhances and expands life's evolved repertoire. Using organisms as feedstock, additive manufacturing through bioprinting will make possible the dream of producing bespoke tools, food, smart fabrics and even replacement organs on demand. This new approach and the resulting novel products will enable human exploration and settlement on Mars, while providing new manufacturing approaches for life on Earth.

Simple Identification of Electron Diffraction Ring Patterns

1969 ◽  
Vol 27 ◽  
pp. 160-161
Author(s):  
Carolyn Nohr ◽  
Ann Ayres
Keyword(s):  
Electron Microscope ◽  
Electron Diffraction ◽  
Diffraction Ring ◽  
Image Position

Texts on electron diffraction recommend that the camera constant of the electron microscope be determine d by calibration with a standard crystalline specimen, using the equation

Atomic orientation effects in proton stopping at low velocity

1983 ◽  
Vol 41 ◽  
pp. 708-709
Author(s):  
Kin Lam
Keyword(s):  
Polycrystalline Material ◽  
Charged Particles ◽  
Target Material ◽  
Stopping Power ◽  
Low Velocity ◽  
Electronic Density ◽  
Interatomic Distances ◽  
Frame Work ◽  
Image Position ◽  
Atomic Orientation

The energy of moving ions in solid is dependent on the electronic density as well as the atomic structural properties of the target material. These factors contribute to the observable effects in polycrystalline material using the scanning ion microscope. Here we outline a method to investigate the dependence of low velocity proton stopping on interatomic distances and orientations.The interaction of charged particles with atoms in the frame work of the Fermi gas model was proposed by Lindhard. For a system of atoms, the electronic Lindhard stopping power can be generalized to the formwhere the stopping power function is defined as

A Magnetic Spectrometer for a Scanning Transmission Electron Microscope

1974 ◽  
Vol 32 ◽  
pp. 436-437
Author(s):  
A. Kosiara ◽  
J. W. Wiggins ◽  
M. Beer
Keyword(s):  
Scanning Transmission Electron Microscope ◽  
Magnetic Spectrometer ◽  
Fringe Field ◽  
Curvature Radius ◽  
Magnetic Pole ◽  
Quadrupole Field ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Under Construction ◽  
Image Position

A magnetic spectrometer to be attached to the Johns Hopkins S. T. E. M. is under construction. Its main purpose will be to investigate electron interactions with biological molecules in the energy range of 40 KeV to 100 KeV. The spectrometer is of the type described by Kerwin and by Crewe Its magnetic pole boundary is given by the equationwhere R is the electron curvature radius. In our case, R = 15 cm. The electron beam will be deflected by an angle of 90°. The distance between the electron source and the pole boundary will be 30 cm. A linear fringe field will be generated by a quadrupole field arrangement. This is accomplished by a grounded mirror plate and a 45° taper of the magnetic pole.

Optimizing conditions for x-ray microchemical analysis in analytical electron microscopy

1978 ◽  
Vol 36 (1) ◽  
pp. 548-549 ◽  
Author(s):  
N. J. Zaluzec
Keyword(s):  
Solid Angle ◽  
Analytical Electron Microscopy ◽  
Incident Beam ◽  
Thin Foil ◽  
Experimental Conditions ◽  
X Ray ◽  
Microchemical Analysis ◽  
Analytical Electron ◽  
Image Position ◽  
Incident Beam Energy

The ultimate sensitivity of microchemical analysis using x-ray emission rests in selecting those experimental conditions which will maximize the measured peak-to-background (P/B) ratio. This paper presents the results of calculations aimed at determining the influence of incident beam energy, detector/specimen geometry and specimen composition on the P/B ratio for ideally thin samples (i.e., the effects of scattering and absorption are considered negligible). As such it is assumed that the complications resulting from system peaks, bremsstrahlung fluorescence, electron tails and specimen contamination have been eliminated and that one needs only to consider the physics of the generation/emission process.The number of characteristic x-ray photons (Ip) emitted from a thin foil of thickness dt into the solid angle dΩ is given by the well-known equation

X-ray microanalysis of thin specimens in the transmission electron microscope at voltages up to 1000 Kv.

1978 ◽  
Vol 36 (1) ◽  
pp. 540-541
Author(s):  
G. Cliff ◽  
M.J. Nasir ◽  
G.W. Lorimer ◽  
N. Ridley
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Weight Fraction ◽  
Present Series ◽  
Constant Independent ◽  
X Ray ◽  
Transmission Electron ◽  
Series Of Experiments ◽  
Image Position ◽  
X Ray Absorption

In a specimen which is transmission thin to 100 kV electrons - a sample in which X-ray absorption is so insignificant that it can be neglected and where fluorescence effects can generally be ignored (1,2) - a ratio of characteristic X-ray intensities, I1/I2 can be converted into a weight fraction ratio, C1/C2, using the equationwhere k12 is, at a given voltage, a constant independent of composition or thickness, k12 values can be determined experimentally from thin standards (3) or calculated (4,6). Both experimental and calculated k12 values have been obtained for K(11<Z>19),kα(Z>19) and some Lα radiation (3,6) at 100 kV. The object of the present series of experiments was to experimentally determine k12 values at voltages between 200 and 1000 kV and to compare these with calculated values.The experiments were carried out on an AEI-EM7 HVEM fitted with an energy dispersive X-ray detector.

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