摘要:
The present invention provides novels genes encoding methyl butenol (MBO) synthase, methy butenol synthases and their use in methyl butenol production.
摘要:
A device for and method of testing fluid compatibility may include placing a first fluid in a fixed-volume testing chamber and placing a second fluid in a sample chamber. The method may also include heating the fixed-volume testing chamber to about a temperature of a subterranean environment and pressurizing the fixed-volume testing chamber to about a pressure of the subterranean environment. The method may further include determining, at a temperature and pressure of about the temperature and pressure of the subterranean environment, a first rheology value of the fluid within the fixed-volume testing chamber, moving a portion of the second fluid from sample chamber into the fixed-volume testing chamber, and determining, at a temperature and pressure of about the temperature and pressure of the subterranean environment, a second rheology value of the fluid within the fixed-volume testing chamber.
摘要:
Disclosed herein are methods of transforming grapevine. The methods involve the culturing of grapevine explant to induce shoot formation having meristematic regions and transforming meristematic tissue using Agrobacterium or particle bombardment.
摘要:
Methods for coating a substrate, such as a turbine engine component, are presented. In one method a preform comprising braze alloy and wear-resistant particles is attached to the substrate. The preform is then bonded to the substrate to form the wear-resistant coating. Other embodiments include articles, such as components for gas turbine engines, comprising a wear-resistant coating disposed on a substrate, the wear-resistant coating comprising wear-resistant particles in a braze alloy matrix.
摘要:
Apparatus and methods for determining suitable displacement fluids for use in subterranean cementing operations, and methods of cementing that use such displacement fluids, are provided. Examples of apparatus include apparatus for evaluating fluids. An example of a system is a system for inverting an oleaginous-external/aqueous-internal fluid in a well bore in a subterranean formation.
摘要:
The invention features methods of producing a plant or a mature somatic embryo from an embryogenic cell or embryogenic culture. The method includes the steps of: (a) providing a liquid culture that includes an embryogenic cell; (b) recovering embryogenic cell from the culture; (c) transferring the embryogenic cell to a second culture; and (d) growing a mature somatic grape embryo from the embryogenic cell.
摘要:
A gate valve has a body, the body having a cavity and a flow passage intersecting the cavity. A seat is mounted to the body at the intersection of the flow passage and the cavity. A gate is installed at the cavity and has an engaging face that slidingly engages the seat while the gate is being moved between open and closed positions. The end faces between a seat pocket and the seat are hard-coated and smooth-finished to provide sealing when mated. The hardcoated pocket and seat sealing surfaces extend the life of the valve by eliminating the need for an elastomeric seal of limited life.
摘要:
A mechanical seal includes a pair of opposing seal faces, wherein at least one of the pair of seal faces comprises a multilayer coating disposed on a substrate, and wherein the multilayer coating comprises a periodic repetition of distinct layers. In another embodiment, the mechanical seal includes a pair of opposing seal faces, wherein at least one of the pair of seal faces comprises a multilayer coating disposed on a substrate, wherein the multilayer coating comprises a plurality of layers of a composite, and wherein no two adjacent layers of the composite comprise an identical ratio of composite constituents. A method includes disposing a multilayer coating on a substrate to form at least one of a pair of opposing seal faces of a mechanical seal.
摘要:
The invention features a method of producing a grape somatic embryo having resistance to a plant pathogen, the method including the steps of (a) culturing a grape somatic embryo in a first liquid culture medium that includes a plant growth regulator and a phytotoxin from a plant pathogen; (b) exchanging the first liquid culture medium for a second liquid culture medium not including the phytotoxin; (c) recovering a living grape cell or grape cell cluster from the second liquid culture, the living cell or cell cluster being resistant to the pathogen; and (d) culturing the grape cell or grape cell cluster in a third culture medium to produce a grape somatic embryo.
摘要:
Methods and cement compositions are provided for sealing a subterranean zone penetrated by a wellbore, wherein the cement composition comprises zeolite, cementitious material, and a mixing fluid.