In a fritted glass filter, a disc or pane of fritted glass is used to filter out solid particles, precipitate, or residue from a fluid, similar to a piece of filter paper.

Von Braun distills the crude mixed alkaloids until the temperature rises to, benzoylates the distillate, extracts the tertiary bases by shaking an ethereal solution with dilute acid, pours the concentrated ethereal solution into light petroleum to precipitate most of the benzoyl-δ-aminobutyl propyl ketone formed by the action of benzoyl chloride on coniceine, distills the solvent from the filtrate and collects from the residue the fraction boiling at /, which is nearly pure benzoylconiine ( bp.

Neutralisation frequently produces a precipitate that will require treatment as a solid residue that may also be toxic.

* De-asphalting the vacuum distillation residue to remove the highest molecular weight alicyclic compounds, which precipitate as black / brown asphaltenes when the mixture is dissolved in C < sub > 3 </ sub >– C < sub > 7 </ sub > alkanes, leaving " de-asphalted oil " ( DAO ) in solution.

The dictionary defines " chemical formula moiety ": " Formula with each discrete bonded residue or ion shown as a separate moiety ".

In organic chemistry a nitrate ( not to be confused with Nitro or Nitrite ) is a relatively rare functional group with general chemical formula RONO < sub > 2 </ sub > where R stands for any organic residue.

Entrapment pumps may be cryopumps, which use cold temperatures to condense gases to a solid or adsorbed state, chemical pumps, which react with gases to produce a solid residue, or ionization pumps, which use strong electrical fields to ionize gases and propel the ions into a solid substrate.

Drawing a bath to try and scrub some of the chemical residue from his horribly scarred flesh, Melvin begins his transformation into a hideously deformed creature of superhuman size and strength.

The historic industrial area at the northeast corner of town has been plagued with environmental concerns and clean-up efforts as a result of chemicals used for wood treatment, as well as chemical residue from glue used in the door factory.

UV treatment leaves no residue in the water due to use of light instead of chemical disinfectants.

The coca leaves are imported from Peru, and they are treated by US chemical company Stepan, which then sells the de-cocainized residue to Coca-Cola.

A gunshot is the discharge of a firearm, producing a mechanical sound effect and a chemical gunshot residue.

In native chemical ligation, the thiolate group of an N-terminal cysteine residue of an unprotected peptide 2 attacks the C-terminal thioester of a second unprotected peptide 1 in an aqueous buffer at pH 7. 0, 20 ° C < T < 37 ° C.

Native chemical ligation can also be performed with an N-terminal selenocysteine residue.

In contrast to chemical biotinylation methods, enzymatic biotinylation allows biotin to be linked at exactly one residue present in the protein.

* Since no propellant is fired, there is no chemical residue to accumulate in the barrel or chamber.

* Pesticide and veterinary chemical residues in foods ( maximum residue limits )

Once there, she tells him they drink Chinese tea in bowls and then admonishes her husband for using the bowls for his chemical laboratory work, leaving residue.

In the late 90s, Dogfish Head started a unique " Ancient Ales " series, in which beer recipes were created based upon the chemical analysis of residue found on pottery and drinking vessels from various archaeological sites.

Chemical synthesis of proteins is a valuable tool in chemical biology as it allows for the introduction of non-natural amino acids as well as residue specific incorporation of " posttranslational modifications " such as phosphorylation, glycosylation, acetylation, and even ubiquitination.

Native chemical ligation involves the coupling of a C-terminal thioester and an N-terminal cysteine residue, ultimately resulting in formation of a " native " amide bond.

These techniques help to overcome the requirement of an N-terminal cysteine needed for standard native chemical ligation, although the steric requirements for the C-terminal residue are still limiting.

In alchemy, Caput Mortuum ( alternately called nigredo ) signified a useless substance left over from a chemical operation such as sublimation and the epitome of decline and decay ; alchemists represented this residue with a stylized human skull, a literal death's head.

Pictures from the SX-70, by contrast, ejected automatically and developed quickly without chemical residue.

When burned, the chemical oxidation of the fuel yields noxious fumes, requiring foods being cooked to be contained in a receptacle such as a pot or pan, and burned tablets will leave a sticky dark residue on the bottom of pots.

Thurso is known for the unpleasant odour emanating from its paper mill, which originates from the burning of chemical residue when the pulp is manufactured and the smell was there well before the retaining basin was built.

Lead is the most prevalent chemical of this class, deriving from automotive residue ( e. g. surface spillage of leaded gasoline ).

According to an Environmental Working Group analysis of USDA and FDA pesticide residue tests performed from 2000 through 2008, 84 % of the 2, 216 tested potato samples contained detectable traces of at least one pesticide.

Techniques from the theory of analytic functions of a complex variable are often used in real analysis – such as evaluation of real integrals by residue calculus.

In mathematics, more specifically complex analysis, the residue is a complex number proportional to the contour integral of a meromorphic function along a path enclosing one of its singularities.

In complex analysis, a field in mathematics, the residue theorem, sometimes called Cauchy's residue theorem ( one of many things named after Augustin-Louis Cauchy ), is a powerful tool to evaluate line integrals of analytic functions over closed curves ; it can often be used to compute real integrals as well.

The water sample may dissolve part of the sample container and any residue on that container, or chemicals dissolved in the water sample may sorb onto the sample container and remain there when the water is poured out for analysis.

An important practical example is the residue theorem of complex analysis, where " closed curves " are continuous maps from the circle into the complex plane, and where two closed curves produce the same integral result if they are homotopic in the topological space consisting of the plane minus the points of singularity.

If only the liquid is of interest, the paper is discarded ; if the suspension is of interest, both the solid residue on the paper and the filtrate are kept for further analysis.

Gunshot residue may be identified by elemental analysis using atomic absorption or with a scanning electron microscope equipped with an energy dispersive spectroscope.

Using analysis of labeled β-glucuronidase peptides after hydrolysis of a substrate that enters a very stable intermediate stage, researchers have determined that Glu540 is the nucleophilic residue.

An additional method of long-term ocean-based sequestration is to gather crop residue such as corn stalks or excess hay into large weighted bales of biomass and deposit it in the alluvial fan areas of the deep ocean basin.

The traditional method of obtaining the latex is to scratch (" score ") the immature seed pods ( fruits ) by hand ; the latex leaks out and dries to a sticky yellowish residue that is later scraped off.

The old method of making potassium carbonate () was by leaching of wood ashes and then evaporating the resulting solution in large iron pots, leaving a white residue called " pot ash ".

Criticism was levelled against the paraffin method used by the Yugoslavs and Belarusians to test for powder residue on the victims ' hands, since it regularly gives false positives because of many other substances, including fertilizers, tobacco, urine and cosmetics, and even provides false negatives on occasion.

Incineration is a disposal method in which solid organic wastes are subjected to combustion so as to convert them into residue and gaseous products.

This method is useful for disposal of residue of both solid waste management and solid residue from waste water management. This process reduces the volumes of solid waste to 20 to 30 percent of the original volume.

However, a more likely method of dunite formation in mantle sections is by interaction between lherzolite or harzburgite and percolating silicate melts, which dissolve orthopyroxene from the surrounding rock, leaving a progressively olivine-enriched residue.

The most common and practical extracting method used is the repeated striking of the burlap bag containing the cone ( s ) against a rough surface to cause the cone ( s ) to shatter, leaving just the job of separating by hand the seed from the residue within the bag.

Integral theorems such as the Cauchy integral formula or residue theorem are generally used in the following method:

By using the residue theorem or the Cauchy integral formula ( first employing the partial fractions method to derive a sum of two simple contour integrals ) one obtains

In this method, the amino-terminal residue is labeled and cleaved from the peptide without disrupting the peptide bonds between other amino acid residues.

Vapour phase decomposition ( VPD ) is a method used in the semiconductor industry to improve the sensitivity of total-reflection X-ray fluorescence spectroscopy by changing the contaminant from a thin layer ( which has an angle-dependent fluorescence intensity in the TXRF-domain ) to a granular residue.