Crystallography

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Crystallography is the experimental science of the arrangement of atoms in solids. (Wikipedia.org)






Conferences related to Crystallography

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2023 Annual International Conference of the IEEE Engineering in Medicine & Biology Conference (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted full papers will be peer reviewed. Accepted high quality papers will be presented in oral and poster sessions,will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE.


2021 IEEE Photovoltaic Specialists Conference (PVSC)

Photovoltaic materials, devices, systems and related science and technology


2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting

The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science


2020 IEEE International Conference on Image Processing (ICIP)

The International Conference on Image Processing (ICIP), sponsored by the IEEE SignalProcessing Society, is the premier forum for the presentation of technological advances andresearch results in the fields of theoretical, experimental, and applied image and videoprocessing. ICIP 2020, the 27th in the series that has been held annually since 1994, bringstogether leading engineers and scientists in image and video processing from around the world.


2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC)

The 2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC 2020) will be held in Metro Toronto Convention Centre (MTCC), Toronto, Ontario, Canada. SMC 2020 is the flagship conference of the IEEE Systems, Man, and Cybernetics Society. It provides an international forum for researchers and practitioners to report most recent innovations and developments, summarize state-of-the-art, and exchange ideas and advances in all aspects of systems science and engineering, human machine systems, and cybernetics. Advances in these fields have increasing importance in the creation of intelligent environments involving technologies interacting with humans to provide an enriching experience and thereby improve quality of life. Papers related to the conference theme are solicited, including theories, methodologies, and emerging applications. Contributions to theory and practice, including but not limited to the following technical areas, are invited.


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Periodicals related to Crystallography

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Advanced Packaging, IEEE Transactions on

The IEEE Transactions on Advanced Packaging has its focus on the modeling, design, and analysis of advanced electronic, photonic, sensors, and MEMS packaging.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Circuits and Systems Magazine, IEEE


Computational Biology and Bioinformatics, IEEE/ACM Transactions on

Specific topics of interest include, but are not limited to, sequence analysis, comparison and alignment methods; motif, gene and signal recognition; molecular evolution; phylogenetics and phylogenomics; determination or prediction of the structure of RNA and Protein in two and three dimensions; DNA twisting and folding; gene expression and gene regulatory networks; deduction of metabolic pathways; micro-array design and analysis; proteomics; ...


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Most published Xplore authors for Crystallography

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Xplore Articles related to Crystallography

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Large area direct X-ray conversion detector for protein crystallography

2008 Canadian Conference on Electrical and Computer Engineering, 2008

This work proposes a large area detector for protein crystallography based on an amorphous silicon (a-Si:H) thin film transistor (TFT) pixel array backplane and an overlying amorphous selenium (a-Se) photoconductor for direct conversion of incident X-ray into image charge. To achieve high sensitivity, avalanche multiplication in a-Se is adopted to make the detector sensitive to each incident X-ray. The use ...


Hard-wired computation of FFT: an application to crystallography

Proceedings of the Twenty-Seventh Southeastern Symposium on System Theory, 1995

Replacing software calculation of FFT by hard-wired computation is of interested for applications requiring lengthy and reiterated FFT routine. A crystallographic method which allows to access to macromolecule architecture at atomic level is one of the potential applications.<<ETX>>


A 2D smart pixel detector for time resolved protein crystallography

IEEE Transactions on Nuclear Science, 1996

A smart pixel detector is being developed for Time Resolved Crystallography for biological and material science applications. Using the Pixel Detector presented here, the Laue method will enable the study of the evolution of structural changes that occur within the protein as a function of time. The X-ray pixellated detector is assembled to the integrated circuit through a bump bonding ...


Uniqueness for ab initio phase retrieval in macromolecular X-ray crystallography

2015 International Conference on Image and Vision Computing New Zealand (IVCNZ), 2015

Protein X-ray crystallography, the determination of three-dimensional structures of protein molecules from crystal X-ray diffraction data, requires determining the phases of the diffraction signal, since only the amplitude is measured. This so-called phase problem is a key component of protein X-ray crystallography. Most current methods for phasing are experimentally based and utilise either additional diffraction data from modified crystals or ...


Challenges and advances of long-wavelength macromolecular crystallography at Diamond Light Source

International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014), 2014

The beamline I23 at Diamond Light Source will be the first dedicated beamline for long-wavelength phasing experiments from macromolecular crystals (MX). The challenges of in-vacuum long-wavelength macromolecular crystallography and the opportunities by extending the wavelength range towards the sulfur and phosphorous K-absorption edges will be discussed and an overview on the current status of the project will be given.


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Educational Resources on Crystallography

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IEEE.tv Videos

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IEEE-USA E-Books

  • Large area direct X-ray conversion detector for protein crystallography

    This work proposes a large area detector for protein crystallography based on an amorphous silicon (a-Si:H) thin film transistor (TFT) pixel array backplane and an overlying amorphous selenium (a-Se) photoconductor for direct conversion of incident X-ray into image charge. To achieve high sensitivity, avalanche multiplication in a-Se is adopted to make the detector sensitive to each incident X-ray. The use of a-Si:H technology promises large area imaging of protein diffraction patterns at less expense compared to existing CCD and image plate detectors. In addition, a theoretical analysis shows that the detector exhibits fast readout speed (readout time &lt; 1 s), high dynamic range (~10<sup>6</sup>), and high sensitivity (~1 X-ray photon), thus validating the detectorpsilas use in protein crystallography.

  • Hard-wired computation of FFT: an application to crystallography

    Replacing software calculation of FFT by hard-wired computation is of interested for applications requiring lengthy and reiterated FFT routine. A crystallographic method which allows to access to macromolecule architecture at atomic level is one of the potential applications.<<ETX>>

  • A 2D smart pixel detector for time resolved protein crystallography

    A smart pixel detector is being developed for Time Resolved Crystallography for biological and material science applications. Using the Pixel Detector presented here, the Laue method will enable the study of the evolution of structural changes that occur within the protein as a function of time. The X-ray pixellated detector is assembled to the integrated circuit through a bump bonding process. Within a pixel size of 150/spl times/150 /spl mu/m/sup 2/, a low noise preamplifier-shaper, a discriminator, a 3 bit counter and the readout logic are integrated. The read out, based on the Column Architecture principle, will accept hit rates above 5/spl times/10/sup 8//cm/sup 2//s with a maximum hit rate per pixel of 1 MHz. This detector will allow time resolved Laue crystallography to be performed in a frameless operation mode, without dead time. Target specifications, architecture and preliminary results on the 8/spl times/8 front-end prototype and the column readout are presented.

  • Uniqueness for ab initio phase retrieval in macromolecular X-ray crystallography

    Protein X-ray crystallography, the determination of three-dimensional structures of protein molecules from crystal X-ray diffraction data, requires determining the phases of the diffraction signal, since only the amplitude is measured. This so-called phase problem is a key component of protein X-ray crystallography. Most current methods for phasing are experimentally based and utilise either additional diffraction data from modified crystals or knowledge of the structure of a related protein. Ab initio phasing refers to computational methods that utilise only the measured diffraction amplitudes and some a priori information on protein electron densities, and potentially offer a dramatic reduction in effort over experimental methods. A key question in ab initio phasing is whether the diffraction amplitudes and the a priori information are sufficient to uniquely define the phases. The question of uniqueness is examined here for the case of a priori information on the molecular envelope.

  • Challenges and advances of long-wavelength macromolecular crystallography at Diamond Light Source

    The beamline I23 at Diamond Light Source will be the first dedicated beamline for long-wavelength phasing experiments from macromolecular crystals (MX). The challenges of in-vacuum long-wavelength macromolecular crystallography and the opportunities by extending the wavelength range towards the sulfur and phosphorous K-absorption edges will be discussed and an overview on the current status of the project will be given.

  • Effect of NiCr and NiFeCr seedlayer on magnetic properties and crystallography of CoCrPt-SiO/sub 2/ perpendicular recording media

    There have been intensive research activities on perpendicular magnetic recording media using CoCrPt-SiO/sub 2/ material as the recording layer. To obtain a relatively high coercivity and good crystallography relatively thick Ru thickness is necessary. In this paper, we studied the effect if NiCr and NiFeCr seedlayer on the magnetic properties and crystallography of CoCrPt- SiO/sub 2/ PMR media using vibrating sample magnetometer and X-ray diffractometry (XRD). The PMR media were deposited by sputtering on a glass substrate.

  • The phase retrieval problem in X-ray crystallography

    The authors introduce several techniques which are used in the X-ray crystallography phase retrieval problem and several unique problems associated with it. Phase retrieval involves signal reconstruction from its Fourier transform magnitude, which in this case is related to the X-ray diffraction pattern intensity. The following techniques are discussed: the isomorphic addition technique, the isomorphic replacement technique, and the multiple anomalous dispersion technique. Finally, a simulation result for the X-ray crystallography problem is presented.<<ETX>>

  • A new thermal neutron detector for protein crystallography

    A new position-sensitive detector is being developed for protein crystallography studies at a spallation source. Based on eight, independent, wire proportional chamber segments housed in a curved pressure vessel, the device covers a scattering angle of 120 degrees, and has a collecting area of 1.5 m by 20 cm. The position resolution will be about 1.3 mm FWHM, with a total counting rate in excess of one million per second. Timing resolution, essential for a spallation source application, is of order 1 /spl mu/s and provides neutron energy determination that is well suited for crystallography. Advanced features of this device include a digital centroid finding scheme, a seamless readout between segments, and a wire array design that minimizes anode modulation. Details of the mechanical design are given, together with digital centroid measurements that illustrate accurate, uniform response.

  • A 2D smart pixel detector for time resolved protein crystallography

    A smart pixel detector is being developed for Time Resolved Crystallography for biological and material science applications. Using the Pixel Detector presented here, the Laue method will enable the study of the evolution of structural changes that occur within the protein as a function of time. The X-ray pixellated detector is assembled to the integrated circuit through a bump bonding process. Within a pixel size of 150/spl times/150 /spl mu/m/sup 2/, a low noise preamplifier-shaper, a discriminator, a 3 bit counter and the readout logic are integrated. The read out, based on the Column Architecture principle, will accept hit rates above 5/spl times/10/sup 8//cm/sup 2//s with a maximum hit rate per pixel of 1 MHz. This detector will allow time resolved Laue crystallography to be performed in a frameless operation mode, without dead time. Target specifications, architecture and preliminary results on the 8/spl times/8 front-end prototype and the column readout are presented.

  • A new thermal neutron detector for protein crystallography

    A new position-sensitive detector is being developed for protein crystallography studies at a spallation source. Based on eight, independent, wire proportional chamber segments housed in a curved pressure vessel, the device covers a scattering angle of 120 degrees, and has a collecting area of 1.5 m by 20 cm. The position resolution will be about 1.3 mm FWHM, with a total counting rate in excess of one million per second. Timing resolution, essential for a spallation source application, is of order 1 /spl mu/s and provides neutron energy determination that is well suited for crystallography. Advanced features of this device include a digital centroid finding scheme, a seamless readout between segments, and a wire array design that minimizes anode modulation. Details of the mechanical design are given, together with digital centroid measurements that illustrate accurate, uniform response.



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