Abstract:
The invention includes methods for automating acquisition of electron microscopic images. Methods use in the invention include development of search algorithms, including spiral search algorithms for the automated determination of areas suitable for imaging in vitrified specimens at liquid nitrogen temperatures, development of criteria to image areas that meet user-specific needs for the thickness of vitreous ice in which the proteins are embedded, automated setting of key imaging parameters such as extent of defocus and magnification required for recording images, automated assessment of most suitable conditions such as thermal and mechanical stability of specimen stage immediately before recording of the image, recording a “low-dose” image of radiation sensitive biological specimens by carrying out all of the setting and assessment steps on an area immediately adjacent to the area of interest, thereby avoiding pre-exposure of the final imaged area to electrons, creation of a seamless interface to transfer the images recorded on a CCD camera directly to computers capable of processing the recorded images, and carrying out the entire process of data collection from a remote computer either within the network, or connected to the network through a telephone modem from any remote location.
Abstract:
The invention provides a probe and a method of obtaining a three-dimensional compositional map of one or more targets in a biological sample, or a portion thereof, comprising: (a) milling a surface layer of a biological sample with a focused ion beam, thereby creating a newly exposed surface layer of the biological sample; (b) imaging the newly exposed surface layer of the biological sample; (c) identifying the chemical composition of the newly exposed surface layer of the biological sample, or a portion thereof, with a mass spectrometer; and (d) repeating (a) to (c) until a three-dimensional compositional map of one or more targets in the biological sample, or portion thereof, is obtained. Uses of the three-dimensional map obtained from the inventive method are further provided.
Abstract:
The invention provides a probe and a method of obtaining a three-dimensional compositional map of one or more targets in a biological sample, or a portion thereof, comprising: (a) milling a surface layer of a biological sample with a focused ion beam, thereby creating a newly exposed surface layer of the biological sample; (b) imaging the newly exposed surface layer of the biological sample; (c) identifying the chemical composition of the newly exposed surface layer of the biological sample, or a portion thereof, with a mass spectrometer; and (d) repeating (a) to (c) until a three-dimensional compositional map of one or more targets in the biological sample, or portion thereof, is obtained. Uses of the three-dimensional map obtained from the inventive method are further provided.
Abstract:
The invention includes methods for automating acquisition of electron microscopic images. Methods use in the invention include development of search algorithms, including spiral search algorithms for the automated determination of areas suitable for imaging in vitrified specimens at liquid nitrogen temperatures, development of criteria to image areas that meet user-specific needs for the thickness of vitreous ice in which the proteins are embedded, automated setting of key imaging parameters such as extent of defocus and magnification required for recording images, automated assessment of most suitable conditions such as thermal and mechanical stability of specimen stage immediately before recording of the image, recording a “low-dose” image of radiation sensitive biological specimens by carrying out all of the setting and assessment steps on an area immediately adjacent to the area of interest, thereby avoiding pre-exposure of the final imaged area to electrons, creation of a seamless interface to transfer the images recorded on a camera directly to computers capable of processing the recorded images, and carrying Automated out the entire process of data collection from a remote computer either within the network, or connected to the network through a telephone modem from any remote location.
Abstract:
Modular content framework and document format methods and systems are described. The described framework and format define a set of building blocks for composing, packaging, distributing, and rendering document-centered content. These building blocks define a platform-independent framework for document formats that enable software and hardware systems to generate, exchange, and display documents reliably and consistently. The framework and format have been designed in a flexible and extensible fashion. In addition to this general framework and format, a particular format, known as the reach package format, is defined using the general framework. The reach package format is a format for storing paginated documents. The contents of a reach package can be displayed or printed with full fidelity among devices and applications in a wide range of environments and across a wide range of scenarios.