摘要:
The present invention was conceived based on observations of children learning to balance a bicycle and the turning versus leaning of the bicycle. The result is a tricycle which leans when it is steered and provides the additional feature of limiting the lean so the tricycle will not fall over. The fact that the lean is controlled by the rider based on steering input and the lean is limited inspires confidence in the rider to facilitate learning to balance as in a bicycle. A key to this rendition was to make it very similar to a conventional tricycle with the simplest implementation practical. In addition, the features described make this an excellent tool for relearning balance after a medical condition.
摘要:
The present invention is a method for electromanipulation of chemical species in vivo relative to a target tissue utilizing a nonconductive, conformable array base adapted to be placed coincident to the target tissue, a plurality of electrode elements projecting from the array base towards the target tissue, the electrode elements addressable individually, an electrical source coupled to the plurality of electrodes, a control means interposed between the electrical source and the plurality of electrode elements and in circuit communication therein, the control means adapted to establish an electrical potential between at least two electrodes, and a delivery means adapted to introduce chemical species to the target tissue.
摘要:
A microfluidic system includes a bubble valve for regulating fluid flow through a microchannel. The bubble valve includes a fluid meniscus interfacing the microchannel interior and an actuator for deflecting the membrane into the microchannel interior to regulate fluid flow. The actuator generates a gas bubble in a liquid in the microchannel when a sufficient pressure is generated on the membrane.
摘要:
An improved SERRS substrate for use in an improved analyte detector is provided by depositing a Raman enhancing surface on, or within, a porous 3D support matrix made of a solid support material. The support material is arranged to have a Raman dye distributed within the volume and the response to illumination of the dye is enhanced as a result of the dye being distributed within the volume and proximate to the Raman enhancing surface, which is also distributed within the volume.
摘要:
A process and device to optimize the yield of fluid catalytic cracking products through a reactive stripping process are disclosed. One or more hydrocarbon streams (3) are introduced in an intermediary region of the stripper (1) of a fluid catalytic cracking unit (FCC), from a device that allows a homogeneous distribution with adequate dispersion. This/these stream(s) react(s) with the catalyst of FCC, although its activity is reduced due to the adsorption of hydrocarbons in the reaction zone, generating products that improve and/or change the global distribution of products, providing a refinery profile adequate to meet quality demands and requirements.
摘要:
The present invention relates to a process and equipment for fluid catalytic cracking for the production of middle distillates of low aromaticity that comprises cracking a mixed feed consisting of heavy fractions of hydrocarbons, in the absence of added hydrogen and employing a catalyst of low activity and low acidity, in a dense-bed FCC reactor to produce an effluent constituted of fractions of middle distillates and naphtha of low aromaticity.
摘要:
A class of compounds specifically designed to act as resonance Raman spectroscopy labels, particularly surface-enhanced resonance Raman spectroscopy (SERRS) labels, for analytes such as proteins, peptides, nucleic acids, and related molecules is described. A resonance Raman spectroscopy label of the invention comprises a metallocene covalently attached to: a reactive group for covalent attachment of the label to an analyte; a SERRS surface binding group; and a halogen, wherein attachment of the halogen to the metallocene is such that the halogen causes a characteristic Raman peak to be produced when the label is subjected to resonance Raman spectroscopy. In a preferred aspect the label also has redox properties suitable for a second use as a label for electrochemical sensing.
摘要:
A process is described for catalytic cracking of hydrocarbon feedstocks from petroleum refining which increases substantially the yields of light olefins. The process limits the extreme conditions to a first reaction section and introduces a stream of cooling fluid above the feedstock injection point so as to maintain a second reaction section under cracking conditions which produce light olefins propene and ethene, and inhibits reactions undesirable for the process.
摘要:
A method is provided of restricted substance management and recycling in a manufacturing environment. The method includes the steps of inputting restricted substances and recycle content data of parts supplied by an inputter of information and receiving the inputted data by a receiver of information via a computer system. The method also includes the steps of reviewing the inputted data and determining parts with banned or recycled content or substances over predetermined thresholds. The method further includes the steps of reporting the determined parts to the inputter of the information and the receiver of the information.
摘要:
A FCC process for the maximization of medium distillates from feedstocks of different sources, by the contact of the feedstock which circulates in a riser reactor together with a fine particulate catalyst from a regenerator (6), under FCC conditions of maximum LCO, at temperatures between about 480° C. and about 520° C., in the absence of added hydrogen, and with injection of coolant or quench to a riser ascendant R, and where the process consists of the injection of a coolant proportion between about 200 and about 50 kg/m3 of feedstock, preferably between about 100 and about 50 kg/m3 of feedstock, in a zone (3) of the riser ascendant R in a position located between about 25% and about 50% of the height of said riser R above the feedstock inlet mouths (2), the injection in this position resulting in the increase of the catalyst circulation and the temperature increase in the starting segment of the riser, yielding the production of medium distillates with low aromatic compounds content and bottoms conversion lower than when the coolant injection is employed in the base of the riser R as it is handled in the prior art processes.
摘要翻译:FCC方法,通过在最高LCO的FCC条件下,通过在提升管反应器中循环的原料与来自再生器(6)的细颗粒催化剂的原料的接触在不同来源的原料中最大化中间馏分, 约480℃和约520℃,在没有加入氢气的情况下,并且注入冷却剂或骤冷至提升管上升R,并且其中该方法包括注入冷却剂比例为约200至约50 kg / m 3的原料,优选在约100至约50kg / m 3原料之间,在提升器上升R的区域(3)中位于 在原料入口(2)上方的所述提升管R的高度的约25%至约50%之间,在该位置的注入导致催化剂循环的增加和提升管的起始段中的温度升高,产生 中间馏分的生产 低芳族化合物含量和底部转化率比在现有技术方法处理时在提升管R的基底中使用冷却剂注入时低。