| 词汇 | example_english_hydrogen-peroxide |
| 释义 | Examples of hydrogen peroxideThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. The development of pesticide resistance in sea lice populations has been demonstrated for hydrogenperoxide and dichlorvos. Both enzymes were insensitive to cyanide but sensitive to hydrogenperoxide, properties characteristic of iron-containing superoxide dismutase. Alternatively, the sections were treated with 1% hydrogenperoxide in methanol for 30 minutes to inactivate endogenous peroxidases. Other compounds that may be introduced continuously into the waterlines during patient treatment are hydrogenperoxide and ozone. Sanitizers evaluated have included hydrogenperoxide, sodium hypochlorite (chlorine), and ethanol. The concentration of hydrogenperoxide which impaired embryo growth was established in separate preliminary experiments (see below). At low concentration exogenous hydrogenperoxide induced an adaptive response of cells by promotion of synthesis of antioxidant enzymes and heat shock proteins. Degradation of hydrogenperoxide by catalase produced by bacterial cells requires a concerted effort by a group of cells. The ferric ion catalyzed decomposition of hydrogenperoxide in perchloric acid solution. Bacteria in human mouths involved in the production and utilization of hydrogenperoxide. In this paper we documented a positive effect of these factors at a concentration of 100 ng/ml on embryos treated with hydrogenperoxide. Tested factors revealed a varying extent of protective activity against oxidative stress caused by hydrogenperoxide. The concentration of hydrogenperoxide was established in separate preliminary experiments. Here we use this technique to monitor gradients of calcium, potassium, oxygen and hydrogenperoxide around individual mouse preimplantation embryos. The concentration of calcium in the medium was unaltered for measurements of potassium, oxygen and hydrogenperoxide gradients. With the resumption of blood flow, the subsequent reperfusion produces large quantities of superoxide radical and hydrogenperoxide. Following 60 min incubation, the wells were washed and peroxidase substrate (ortho-phenyldiamine) with hydrogenperoxide was added. This treatment was conducted to remove, or at least greatly decrease, any major postulated oxidants such as superoxides and hydrogenperoxide. Once the bleaching is complete, the action of the hydrogenperoxide is to be stopped. The oxidant sensor is designed to detect oxidants such as hydrogenperoxide and its distribution within the soil with depth. A spectrophotometric method for measuring the breakdown of hydrogenperoxide by catalase. Thus, we propose here that the notion of magnetotactic bacteria and the use of hydrogenperoxide would be complementary. Immunoreactive cones were visualized by reaction with diaminobenzidine and hydrogenperoxide. They were then washed in a 25% methanol, 0.9% hydrogenperoxide solution for 30 min to decrease endogenous peroxidase activity. The possible release of hydrogenperoxide from the egg is discussed. Microbial communities inhabiting ancient permafrost sediments demonstrate high stability to the influence of the temperature, high radiation or high concentration of hydrogenperoxide. Residual amounts of hydrogenperoxide remaining in and around the specimens can continue the bleaching even after removal from the bath of hydrogenperoxide. The formation of the 3.5 micron hydrogenperoxide band has been studied by infrared transmission spectroscopy performed in a high-vacuum chamber. The accumulation of hydrogenperoxide in senescencing leaves and chloroplasts in relation to lipid peroxidation. A gradient of neither potassium nor hydrogenperoxide was observed around unperturbed embryos. They catalyse the oxidative deamination of primary amines by dioxygen to form aldehydes, ammonia, and hydrogenperoxide. On the other hand, in embryos cultured with hydrogenperoxide alone, significantly more dead cells were detected. The blastocysts in media with hydrogenperoxide and growth factors had a cell viability which usually exceeded 90%. Cyanide-resistant reduction of nitroblue tetrazolium and hydrogenperoxide production by the rabbit blastocyst. Spontaneous lipid peroxidation and production of hydrogenperoxide and superoxide in human spermatozoa. An experimental model was established to determine whether the tested growth factors could compensate for the unfavourable culture milieu of oxidative stress created by the addition of hydrogenperoxide. Multicomponent investigations of the hydrogenperoxide and hydroxyl radical scavenging antioxidant capacities of biofluids: the role of endogenous pyruvate and lactate. Evidence for chilling-induced oxidative stress in maize seedlings and a regulatory role for hydrogenperoxide. Effect of phagocytosis of erythrocytes and erythrocyte ghosts on macrophage phagocytic function and hydrogenperoxide production. Embryotoxicity of magainin-2-amide and its enhancement by cyclodextrin, albumin, hydrogenperoxide and acidification. Metabolic intermediates such as hydrogenperoxide and nitric oxide appear to be more important against trematodes than the shorterlived intermediates that are more important in anti-microbial defences. Formation of fluorescent heme degradation products during the oxidation of hemoglobin by hydrogenperoxide. The photochemical formation of hydrogenperoxide in natural waters. Healthy blastocysts and 1-cell embryos did not exhibit a gradient of hydrogenperoxide, suggesting that healthy embryos are capable of effectively eliminating hydrogen peroxide using intracellular detoxification mechanisms. It is also not conceivable why hydrogenperoxide (of hypothetically biological origin) should release oxygen when humidified, without mentioning the presence of any transition metal salt catalysts. I am not aware of any attempt to use hydrogenperoxide as a source of energy in any industrial propulsion unit. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I shall only add that ozone turns into hydrogenperoxide on contact with water or blood. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It contains 300 articles from medical journals which speak highly of hydrogenperoxide. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Hydrogenperoxide is a naturally occurring body product used by the white blood cells to destroy pathogens. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It is made more serious by the department's intransigence about hydrogenperoxide and ozone. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 There is no prospect of a trade mark, patent or even biotechnological development in the production of hydrogenperoxide. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 One company that produces hydrogenperoxide has calculated that it would take 18 years to recoup the investment incurred doing the clinical trial. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Hydrogenperoxide is used for cleaning work surfaces; ozone is the most effective fumigatory gas known. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 In addition, hydrogenperoxide—it is a strong oxidising agent—was used to introduce oxygen at strategic sites. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The dire warnings about hydrogenperoxide clearly originate from the same source. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 What about the huge body of evidence in favour of hydrogenperoxide either ingested or given intravenously? From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I do not undertake to follow his example with regard to hydrogenperoxide. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It is simply not worth anyone's while to pay to promote hydrogenperoxide. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I will just say in summary that hydrogenperoxide is what the white blood cells produce to destroy viruses and bacteria. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I want to emphasise that hydrogenperoxide is not just another alternative health remedy but a fundamental physiological principle. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 With a hydrogenperoxide type of engine a submarine can be almost completely submersible. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 This includes the duty to prohibit the sale of cosmetics which contain or emit concentrations of hydrogenperoxide in excess of the limits permitted by that directive. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Will she consider encouraging research into whether ozone or hydrogenperoxide could be used to purify blood products in order to ensure that such incidents do not happen in future? From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The most important sources of the free radicals which cause ageing come from the abnormal oxidation and breakdown of fats and the breakdown of hydrogenperoxide. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 These structural properties resemble those of gaseous hydrogenperoxide, which adopts a skewed anticlinal conformation, and also experiences a strong rotational barrier. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It also finds a use as a catalyst between acetone and hydrogenperoxide to form the tetrameric form of acetone peroxide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Once there, the antimicrobial action of superoxide and hydrogenperoxide, derived from the metabolic processes of the neutrophils, act to combat the microbial invasion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A number of other products, functionally equivalent to hydrogenperoxide, are commercially available, but at substantially higher cost. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The enzyme catalase, found exclusively in peroxisomes, converts the hydrogenperoxide into water and oxygen. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Use of hydrogenperoxide vapor has been clinically proven to reduce infection rates and risk of acquisition. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Enzymes in a variety of biological systems may also catalyze the decomposition of hydrogenperoxide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hydrogenperoxide and methyl alcohol were the fuels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hydrogenperoxide is frequently used in such applications. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It catalyzes the decomposition of hydrogenperoxide to water and oxygen. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The catalase test is done by placing a drop of hydrogenperoxide on a microscope slide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is fueled by hydrogenperoxide and bitumen. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Catalase is an unusual enzyme since, although hydrogenperoxide is its only substrate, it follows a ping-pong mechanism. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hydrogenperoxide in turn is reduced to water by rubrerythrin. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hydrogenperoxide occurs in surface water, groundwater and in the atmosphere. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Several synthesis routes are known for aliphatic peroxides, such as the reaction of dialkylsulfates with alkaline hydrogenperoxide solution. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, the loss of blue color in leuco-methylene blue is selective for hydrogenperoxide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is produced by treating sulfuric acid with hydrogenperoxide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A hydrogenperoxide monopropellant was used, decomposed into oxygen and steam over a metallic calcium catalyst. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In other cases, when formation of cross-links by oxidation is desirable, an oxidizer such as hydrogenperoxide may be used to speed up the process. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Bleaching methods use carbamide peroxide which reacts with water to form hydrogenperoxide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lights are typically within the blue light spectrum as this has been found to contain the most effective wavelengths for initiating the hydrogenperoxide reaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hydrogenperoxide could be used to restore the tissues' original colouring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Kerosene was injected into the hot steam and oxygen exhaust products of catalytically decomposed hydrogenperoxide, resulting in spontaneous ignition. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. With hydrogenperoxide the epoxide 8 is formed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Activation of the lactoperoxidase system by addition of hydrogenperoxide and thiocyanate extends the shelf life of refrigerated raw milk. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In its reaction with hydrogenperoxide, the heme center of hemoglobin behaves as a peroxidase, reducing the peroxide to water. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In combination with tertiary arsines, perrhenic acid gives a catalyst for the epoxidation of alkenes with hydrogenperoxide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This compound is a white crystalline solid, which dissolves in water to give free hydrogenperoxide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Distillation is extremely dangerous with hydrogenperoxide; peroxide vapor can ignite or detonate depending on specific combinations of temperature and pressure. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Other approaches for concentrating hydrogenperoxide are sparging and fractional crystallization. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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