摘要:
A method for hydrodesulfurizing FCC naphtha is described. More particularly, a Co/Mo metal hydrogenation component is loaded on a silica or modified silica support in the presence of organic ligand and sulfided to produce a catalyst which is then used for hydrodesulfurizing FCC naphtha. The silica support has a defined pore size distribution which minimizes olefin saturation.
摘要:
A method of analyzing acoustic data comprising, determining fluid sound speed through connate fluid. The method involves sampling the fluid, sending an acoustic signal into the fluid between a first and a second reflective interface. Data is recorded that represents acoustic signals over time as they are reflecting from the interfaces. A smoothed first derivative with respect to time of the cumulative sum of squares (CSS) of the filtered amplitude data is determined. This first derivative is cross correlated to the time-shifted versions of itself.
摘要:
Provided is an apparatus for writing Bragg gratings and a reflection unit used in the same capable of readily adjusting an incident angle of light radiated from a light source, in order to write Bragg gratings on a target object such as an optical fiber. In accordance with the present invention, it is possible to readily adjust the incident angle of light introduced into the target object using the reflection unit when the position of the target object changes or an interval between the Bragg gratings is adjusted.
摘要:
Devices, systems and techniques to monitor signal fading based on a cluster of subcarriers at a receiver and feedback monitored signal fading to a transmitter in wireless communication systems such as OFDM and OFDMA systems.
摘要:
Catalysts for dewaxing of hydrocarbon feeds, particularly feeds with elevated sulfur and nitrogen levels, are provided. The dewaxing catalysts include a zeolite with a low silica to alumina ratio combined with a low surface binder, or alternatively the formulated catalyst has a high ratio of zeolite surface area to external surface area.
摘要:
A signal generating circuit for detecting ground status includes a power supply input unit (A), a step down rectified power supply or DC power supply unit (C) in series. The DC power supply required by a signal detection and process unit (D) is obtained by the power supply input unit (A) passing through the step down DC power supply unit (C), and then a ground status signal is obtained and outputted via a resistor unit (B) and the signal detection and process unit (D) connected in turn.
摘要:
Supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, and an organic additive, and methods for synthesizing supported metallic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic additive, dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.
摘要:
Devices, systems and techniques to monitor signal fading based on a cluster of subcarriers at a receiver and feedback monitored signal fading to a transmitter in wireless communication systems such as OFDM and OFDMA systems.
摘要:
There is provided systems and method for sensitive data protection during user interface automation testing. A user may transmit sensitive data to the test website framework, where the sensitive data is encrypted as a data key. The encrypted data key is set by an administrator of the test website and given to the user. The user may enter the key, where the test website framework application utilizes a conversion kit to decrypt the encrypted data key for use in the website user interface automation test. However, the encrypted data key is pulled into a version control system and/or viewed in test results so that the sensitive data remains hidden from view. In various embodiments, the encrypted data key may be entered into a web element, such as a password field, where the password field displays only the encrypted data key during test results.