41 results about "Oxygen binding" patented technology

Provided herein is a stabilized oxygen transport matrix that includes a reversible oxygen binding protein, such as hemoglobin, immobilized throughout the stabilized oxygen transport matrix. The stabilized oxygen transport matrix is used to transport oxygen and can be used as an oxygen transport region and a reaction region of an analyte sensor, such as an implantable glucose sensor. The reversible binding protein can also function as an oxygen probe within the analyte sensor.

Disclosed herein is a method for production of a thin-film semiconductor device which includes, a first step to form a gate electrode on a substrate, a second step to form a gate insulating film of silicon oxynitride on the substrate in such a way as to cover the gate electrode, a third step to form a semiconductor thin film on the gate insulating film, and a fourth step to perform heat treatment in an oxygen-containing oxidizing atmosphere for modification through oxygen binding with oxygen-deficient parts in the silicon oxynitride film constituting the gate insulating film.

The present invention provides a process for efficiently obtaining polyethers having its high degree of polymerization by easily polymerizing substituted epoxides which could hardly or could not be made so far to provide a high degree of polymerization. That is, a polyether is obtained by a process which comprises ring-opening-polymerizing at least one substituted epoxide, except for propylene oxide and epihalohydrin, in the presence of a rare earth metal compound represented by the formula (I) and a reducing compound:Wherein M represents a rare earth element selected from Sc, Y and lanthanide, and L1, L2 and L3 are same as or different from each other and each of them represents an oxygen-binding ligand.

The present invention relates to fungal host cells that are transformed with a nucleic acid construct encoding a fungal oxygen-binding proteins or fragments thereof that comprise the oxygen-binding domain. Upon transformation of the host cell with the construct, the oxygen-binding protein confers to the host cell improved fermentation characteristics as compared to untransformed host cells. These characteristics include e.g. increases in oxygen uptake rates, biomass densities, volumetric productivities and/or product yields. The invention further relates to fermentation processes in which the host cells are used and to fungal oxygen binding proteins, in particular fungal flavohemoglobins and hemoglobin domains, and to nucleotides sequences encoding these proteins.

A catalyst particle having high oxygen reduction reactivity and low methanol oxidation reactivity, a supported catalyst comprising the catalyst particle, and a fuel cell using a cathode comprising the supported catalyst are provided. The whole catalyst particle or at least the surface of the catalyst particle includes an alloy of two or more metals selected from the group consisting of Fe, Co, Ni, Rh, Pd, Pt, Cu, Ag, Au, Zn, and Cd. The alloy has a stronger oxygen-binding force than platinum or a weaker hydrogen-binding force than platinum.

The invention describes the integration of polynucleotides into chromosomal DNA of S. spinosa species, which are useful for the production of insecticides, integrants thereof, and also to the use of the integrants. The invention includes the stable integration and expression of an oxygen-binding protein, VHb, which results in increased spinosyn production.

The invention belongs to the technical field of gene engineering, and provides a method for recombining a Saccharopolyspora erythraea strain containing exogenetic vitreoscilla hemoglobin gene (vgb). In the method, vitreoscilla hemoglobin (VHb) expressed by the vitreoscilla hemoglobin gene (vgb) can be combined with oxygen to form an oxygen-binding state, and intervenes several key steps or branch pints in cell metabolic paths related with oxygen in the mode, so that the cell growth speed is improved, the cell respiration intensity is improved and the critical oxygen concentration of cells is reduced. In large dissolved oxygen change, a constant respiratory rate is kept, and the cell culture density and exogenetic gene expression are improved under low oxygen condition. The method solves the problem that in a large-scale bioreactor, because thalli are positioned in a viscous, enclosed and complicated environment with rich nutrients, oxygen required by massive mycelia in an exponential phase is limited, and the yield of erythrocin is reduced. The method has important application value for the antibiotic fermentation industry and high density cell culture, which have high oxygen consumption and take dissolved oxygen as a limiting factor.

Genes encoding bacterial oxygen binding proteins are provided. Recombinant expression of at least one of the present bacterial hemoglobin genes increased the growth characteristics and/or carotenoid production levels in microbial host cells grown under microaerobic conditions.

An electrochemical device including: a positive electrode including oxygen as a positive active material; a negative electrode including a lithium ion-intercalatable/deintercalatable material as a negative active material; and an electrolytic solution in fluid communication with the positive electrode and the negative electrode and including a solvent and an oxygen absorbing/desorbing material with an oxygen binding rate of about 60 to about 95% in a pure oxygen atmosphere.

The present invention provides a packing structure including a theft prevention tag, in which an anti-theft electronic tag is mounted to a ventilating packing element having contained therein a food-preserving agent such as an oxygen-binding agent, a moisture-proofing agent, or a freshness-keeping agent, and the ventilating packing element is easily built in a product wrapper, so that the anti-theft electronic tag is prevented from being damaged with a malicious intention, thereby further ensuring safety and security of products or articles.

Non-naturally occurring mutant hemoglobins rHb (.beta.N108Q) and rHb (.beta.L105W) are provided that have a lower oxygen affinity than that of native hemoglobin, but high cooperativity in oxygen binding. rHb (.beta.N108Q) also exhibits enhanced stability against autoxidation. The mutant hemoglobins are preferably produced by recombinant DNA techniques. Such mutant hemoglobins may be used as a component of a blood substitute and hemoglobin therapeutics.

The invention discloses an iron-containing chelating agent embedded MOF material, a synthesis method and application, the synthesis method comprises the steps of synthesizing the MOF material and synthesizing the iron-containing chelating agent embedded MOF material by taking the MOF material and ethylenediamine tetraacetic acid chelated iron as raw materials, encapsulating the ethylenediamine tetraacetic acid chelated iron in internal gaps of the MOF material to obtain the iron-containing chelating agent embedded MOF material. The adsorption performance of the MOF material is greatly improvedby utilizing a large number of chemical bonds easy for oxygen binding in ethylenediamine tetraacetic acid and the affinity of Fe element to oxygen, and the adsorbed material can be subjected to thermal desorption, so that the reutilization of the material is realized.

A method and an apparatus for regenerating an oxygen-binding ability by reducing the methemoglobin contained in hemoglobin-vesicle by light irradiation. This method includes adding electron donors such as amino acids, saccharides, alcohols, and/or flavin derivatives in appropriate amounts to the inner aqueous phase of the hemoglobin-vesicle, applying light to the vesicle when the content of methemoglobin increases as a result of oxidation of hemoglobin, thereby reducing the metohemoglobin. In this manner, the oxygen-binding ability is recovered, thereby maintaining the function of the hemoglobin-vesicle.

The invention provides an energy-saving combined ore dressing process for high-oxidation and high-bonding oxygen and sulfur mixed copper ore. The process comprises the steps of raw ore treatment, preparation of leaching solution, stirring and leaching, dynamic soaking selection, solid-liquid separation and washing and filtration of leached residue. The ore is crushed till the granularity is less than 10 millimeters, and the crushed ore with granularity of less than 3 millimeters is screened; sulfuric acid solution, the PH of which is less than 8, is used as the leaching solution; the raw ore is dynamically and continuously soaked for less than 24 hours, and the leachate is directly guided to an extraction process after PH value neutralization and micro pipe filtration; and the leached residue is separated by using a belt filter, and the filtered residue is treated in a flotation process to extract copper sulfide ore. According to the combined efficient washing and filtering process, dynamic soaking is adopted, the leachate is subjected to micro pipe filtration (the leachate with solid concentration of less than or equal to 3 percent in liquid can be filtered, and the solid content of the filtered liquid can be less than 50ppm), and the leached residue is separated by using the belt filter, so that the ore can meet the process requirement without fine crushing. By the process, the metal recovery rate of the high-bonding oxidized copper ore reaches over 80 percent, continuous production is realized, and energy consumption and production cost are comprehensively reduced.