what is passivation
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Pickling and Passivation Passivation is the treatment of the surface of stainless steels, often with acid solutions (or pastes), to remove contaminants and promote the formation of the passive film on a freshly created surface (e.g. through grinding, machining or mechanical damage).
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- Use passivity in a sentence. the state or quality of being passive; esp., inaction, inertia, submissiveness, etc. passivity. The condition or quality of being passive; inactivity, quiescence, or submissiveness.
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- In X-inactivation, female embryos randomly inactivate one X chromosome in each cell, resulting in only one functional copy of X-linked genes in both males and females. X-inactivation requires a locus on the X, called the X-inactivation center. At this locus, inactivation occurs in response to a developmental cue, which is present only at specific stages of embryo development. Inactivation occurs because of a specific type of RNA, which binds to one X chromosome, preventing transcription of the genes on this particular copy.
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pass Definition of pass for English Language Learners. : 1  to move past someone or something. : 2  to move past someone or something that is moving more slowly in the same direction. : 3  to move or go into or through a particular place.
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Schedule a Demo Passbook is a location based service and it is activated on your home screen whenever you use the device. When you buy any service from any IOS app, you will be given the option to add it to your passbook.
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deactivation de·ac·ti·vate. tr.v. de·ac·ti·vat·ed, de·ac·ti·vat·ing, de·ac·ti·vates. 1. To render inactive or ineffective. 2. To inhibit, block, or disrupt the action of (an enzyme or other biological agent). 3. To remove from active military status.
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Stainless Steel Passivation Stainless steel is passivated through a cleaning cycle to remove oils, grease, compounds, lubricants, and residue followed by a nitric or a citric acid bath or a by an oxidant that removes free iron and contaminates. Passivation is performed on clean stainless steel, providing the surface has been thoroughly cleaned or descaled.
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- Fax: 1-888-411-2841 www.aspenfasteners.com aspeninfo@aspenfasteners.com Passivation Passivation is a process whereby exogenous iron or iron compounds are removed from the surface of stainless steel by way of chemical dissolution.
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Desquamation For the meaning in material sciences, see spalling. Desquamation (from Latin desquamare, meaning 'to scrape the scales off a fish'), also called skin peeling, is the shedding of the outermost membrane or layer of a tissue, such as the skin. 1 Skin.
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activation activation. 1. the act or process of rendering active. 2. the transformation of a proenzyme into an active enzyme by the action of a kinase or another enzyme. 3. the process by which the central nervous system is stimulated into activity through the mediation of the reticular activating system.
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- The estivation (Summer sleep ) : an other state of dormancy in which like other species snails spend periods of heat or drought in warmer latitudes. 1 - estivation: The snail lives short periods of great activity, which are essential for building up its reserves. These allow him a slowed down long term life.
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Activation In biochemistry, activation, specifically called bioactivation, is where enzymes or other biologically active molecules acquire the ability to perform their biological function, such as inactive proenzymes being converted into active enzymes that are able to catalyze their substrates into products.
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Overview Dilation and curettage (D&C) Overview. Female reproductive system The ovaries, fallopian tubes, uterus, cervix and vagina (vaginal canal) make up the female reproductive system. Dilation and curettage (D&C) is a procedure to remove tissue from inside your uterus. Doctors perform dilation and curettage to diagnose and treat certain uterine conditions — such as heavy bleeding — or to clear the uterine lining after a miscarriage or abortion.
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- transitive verb. 1 : to make inactive or less reactive passivate the surface of steel by chemical treatment. 2 : to protect (something, such as a solid-state device) against contamination by coating or surface treatment.
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Do you use quotations when paraphrasing? Submit. · just now. Report Abuse. you don't use quotation marks. in text citations will do (an example of which is parenthetical citation). just make sure to give credit to your sources. you only use quotation marks when using DIRECT quotations, meaning everything is copied from the source in verbatim.kaz · 6 years ago.Thumbs up.ubmit. · just now. Report Abuse. you don't use quotation marks. in text citations will do (an example of which is parenthetical citation). just make sure to give credit to your sources. you only use quotation marks when using DIRECT quotations, meaning everything is copied from the source in verbatim.
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Passphrase A passphrase is a sequence of words or other text used to control access to a computer system, program or data. A passphrase is similar to a password in usage, but is generally longer for added security. Passphrases are often used to control both access to, and operation of, cryptographic programs and systems, especially those that derive an encryption key from a passphrase. The origin of the term is by analogy with password.
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passing Word Origin & History. pass c.1275 (trans.) to go by (something), also to cross over, from O.Fr. passer, from V.L. *passare to step, walk, pass, from L. passus step, pace (see pace (1)). Intrans. sense of to go on, to move forward, make one's way is attested from c.1300. Fig. sense of to experience, undergo (as in pass the time) is first recorded 1390.
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- First pass effect. Not to be confused with First dose effect. The first-pass effect (also known as first-pass metabolism or presystemic metabolism) is a phenomenon of drug metabolism whereby the concentration of a drug is greatly reduced before it reaches the systemic circulation.
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zoology aestivation - (zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period. estivation. zoological science, zoology - the branch of biology that studies animals.
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- 2. aestivation - (botany) the arrangement of sepals and petals in a flower bud before it opens. estivation. phytology, botany-the branch of biology that studies plants. arrangement-an orderly grouping (of things or persons) considered as a unit; the result of arranging; a flower arrangement.
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X chromosome X-inactivation ensures that females, like males, have one functional copy of the X chromosome in each body cell. Because X-inactivation is random, in normal females the X chromosome inherited from the mother is active in some cells, and the X chromosome inherited from the father is active in other cells.
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pass pass (plural passes) 1  An opening, road, or track, available for passing; especially, one through or over some dangerous or otherwise impracticable barrier such as a mountain range; a passageway; a defile; a ford. a mountain pass.
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Learn More About Our Anodizing Services The Anodizing Service Process. Anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. Anodizing increases corrosion and wear resistance and provides better adhesion for most paint primers and glues than bare metal.
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activate deactivate-make inactive; they deactivated the file. inactivate. alter, change, modify-cause to change; make different; cause a transformation; The advent of the automobile may have altered the growth pattern of the city; The discussion has changed my thinking about the issue.
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How to passivate aluminum with acid? Hello, Jie. The word passivate is a bit troublesome because aluminum cannot be passivated in the same sense as stainless steel; but it can be passivated in the same sense as zinc plating, i.e., with a chromate conversion coating.
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- passivated. 1  transitive verb. 2  1 : to make inactive or less reactive passivate the surface of steel by chemical treatment. 3  2 : to protect (something, such as a solid-state device) against contamination by coating or surface treatment.