Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

RECIPE method

Instruction records (records that establish or define expectations, e.g., Validation Plans, Protocols, SOPs, specifications, recipe, method)... [Pg.148]

The computation method employed is the ReCiPe method, with midpoint, endpoint and single score (World H/H). [Pg.111]

A comprehensive quantification of these aspects was completed in May 2006 by the European Commission s Joint Research Centre (JRC) and included the Environmental Impact of Products (EIPRO) study (Beton et al., 2011), where the potential environmental impacts of textile products consumed in the EU-27 have been estimated along with their life cycle stages and compared considering indicators identified in the ReCiPe method (Goedkoop et aL, 2008) (Figure 8.1), also broken down by product and fibre types. [Pg.149]

Based on the LCIs, the LCA metrics were calculated using the RECIPE method [46]. Biorefineries constitute emerging technological options based on diverse production activities. Assessing their performance from an environmental sustainability... [Pg.311]

Table 13.4 Summary of the Results for the Midpoint Impact Categories of the RECIPE Method for the Biorefinery System of Case Study 2 According to Different Allocation Methods and Comparison With... Table 13.4 Summary of the Results for the Midpoint Impact Categories of the RECIPE Method for the Biorefinery System of Case Study 2 According to Different Allocation Methods and Comparison With...
For example, there are also other approaches by Pacher et al. [106], Romero et al. [107], Sidis [40], and Domcke and Stock [42], which developed recipes for construction ab initio diabatic states. These methods can be efficient as long as one encounters, at nwst, one isolated conical intersection in a given region in... [Pg.677]

Unconstrained optimization methods [W. II. Press, et. ah, Numerical Recipes The An of Scieniific Compulime.. Cambridge University Press, 1 9H6. Chapter 101 can use values of only the objective function, or of first derivatives of the objective function. second derivatives of the objective function, etc. llyperChem uses first derivative information and, in the Block Diagonal Newton-Raphson case, second derivatives for one atom at a time. TlyperChem does not use optimizers that compute the full set of second derivatives (th e Hessian ) because it is im practical to store the Hessian for mac-romoleciiles with thousands of atoms. A future release may make explicit-Hessian meth oils available for smaller molecules but at this release only methods that store the first derivative information, or the second derivatives of a single atom, are used. [Pg.303]

The advantage of the method just described is that it can be generalized to molecules of any size. Setting up quite complicated secular mahices can be reduced to a simple recipe. A computer scheme can be used to diagonalize the resulting matrices by an iterative series of rotations. [Pg.189]

Not-Tim said Strike was wasting everybody s time with the etha-nol/KOH recipe and you wanna know what He was kinda right (But, those Brazilian improvements above aren t here just to take up space ). This method is sooooo easy ... [Pg.43]

METHOD 4 This is a P2P recipe that Strike has no hand in. Strike never even knew about it until Strike saw everybody talking about it on the net. But it seems to be extremely popular. Shulgin has written about it. Uncle Fester, Strike understands, has written about it. And there seems to be a lot of posts regarding its high success rates. Most people get started from the method description in the patent literature where they were first published. The following are some representative examples from the U.S. Patent 4,638,094 Process for Producing Phenylacetones ... [Pg.82]

Those propylene species that the authors were using are no different than safrole or aiiyibenzene. In fact, safrole is a perfect substitute. Yowza Those recipes look awesome Now as Strike understands it, there has already been a detailed writeup of the by-the-numbers application of the above patent as written. This, Strike beiieves, can be found in Uncle Fester s Secrets of LSD Manufacture and/or Secrets of Methamphetamine Manufac-ture [18]. But our adventurous chemist Suniight came thru again and submitted a new, hybrid form of this method which she seems to have formulated after a lot of thought on the matter. So here again is Suniight ... [Pg.83]

Strike got the journal article for this recipe as literature citation used in the original Wacker oxidation Strike used for Method 2. In it both mercuric acetate, and to an extent, lead acetate produced ketones as described. Someone-Who-ls-Not-Strike also got a certain ketone. But maybe they were lucky or just plain wrong. Most people on Strike s site say this mercuric acetate thing... [Pg.89]

Since the formamide reaction solution is going to be a lot cleaner than the tarry mess of the original recipe, the chemist has yet another option to explore. Instead of hydrolyzing in the reaction pot, the chemist can add SOOmL of clean dHjO and stir just like in the crappy original method except that this time the chemist is going to look for a heavy oil layer that will settle at the bottom. The up-... [Pg.113]

Anyway, with catalyst in hand it is time to proceed with the reductive amination [56]. As far as Strike can see, this method will not work well in making MDA. It will not use ammonium acetate in the same way as NaBHaCN. So one is stuck with making MDMA or meth using this method. And without further ado, here s your recipe ... [Pg.121]

When Strike wrote the first edition Strike considered there to be only one, decent reduction method for the p-Nitropropene. But since then Strike has come across quite a few new ways that make this conversion very, very easy and varied. A lot of the ways were conjured up by one, industrious lab from Tennessee. We ll get to those in a minute. But first let s start off with the basic, default recipe for the reduction of p-Nitropropenes. [Pg.137]

METHOD 3 The authors next stepped back and considered the cosmic imbalance caused by that 6-day reaction time. The next recipe was what they came up with. [Pg.139]

That means that this method is a neat little way one can get the ever lovely MDEA (Methylenedioxyethyl amphetamine, the softer cousin of X). Strike hears you asking So if one uses lithium tri-methylborohydride can one get methamphetamine out of that nitro group . Good question. Unfortunately the answer is no. The authors say Interestingly, N-alkylated products were not produced when other alkylborohydrides were used." Fair enough. Here s the recipe ... [Pg.140]

Man, that recipe is WEAK But hey That s 10% final product in one pot. Yeeshl Why bother Don t take this first method seriously folks. It was just Strike s way of illustrating the futility of easy answers. All the rest of the stuff in this section is much, much better. [Pg.184]

These last three theoretical methods have no real kinship to any of the major categories or precursors. The first is the one that has caused Strike more despair than any other. It was once a Top Ten recipe in the first edition. But it was a reckless gamble on Strike s part and Strike paid for it. Here is what Strike wrote last year... [Pg.193]

This method was designed to produce an acetyl intermediate just like that in the failed recipe a few paragraphs above using only sulfuric acid and acetonitrile [93]. This reaction works, in theory, in a so-so manner on allylbenzene but not on safrole. This method will not make X for many reasons. So why does underground literature and DEA forensic scientists keep claiming that it does Strike doesn t know either. Let s see what the man who invented this. Dr. Ritter, had to say back in 1952 "several attempts to obtain amides from...safrol (sic) were fruitless. [94]. What makes all these people think that this will work unless no one did their homework. This is another sore spot of Strike s and... [Pg.199]

This will work just as well in converting benzaldehyde to pro-penylbenzene as it will in converting piperonal. This is like the millionth method Strike has pulled from the reference 19. This was the most street-applicable article Strike has ever come across, but the greatest thing about this article s recipes is that THEY WORK Strike means to say they work big time A lot of this has to do, no doubt, with the fact that the most accomplished amphetamine chemists co-authored the work Drs. Shulgin and Nichols. [Pg.245]

PVDE is manufactured using radical initiated batch polymerization processes in aqueous emulsion or suspension operating pressures may range from 1 to 20 MPa (10—200 atm) and temperatures from 10 to 130°C. Polymerization method, temperature, pressure, recipe ingredients, the manner in which they are added to the reactor, the reactor design, and post-reactor processing are variables that influence product characteristics and quaUty. [Pg.386]

Another benefit of using LIMS is the ease of ensuring that tests are performed according to the most current procedure. Methods can be incorporated into the system and printed either as a recipe or worksheet for the analyst, thus helping to assure consistency between analysts. [Pg.368]

In fat-free recipes where this method caimot be practiced, it is possible to add and mix vanillin powder with eggs. An alternative to vanillin powder for highly mechanized processes is to use a vanillin solution or Hquid flavor the solvent used is either ethanol- or monopropylene glycol-based. [Pg.399]

An unusual method for the preparation of syndiotactic polybutadiene was reported by The Goodyear Tire Rubber Co. (43) a preformed cobalt-type catalyst prepared under anhydrous conditions was found to polymerize 1,3-butadiene in an emulsion-type recipe to give syndiotactic polybutadienes of various melting points (120—190°C). These polymers were characterized by infrared spectroscopy and nuclear magnetic resonance (44—46). Both the Ube Industries catalyst mentioned previously and the Goodyear catalyst were further modified to control the molecular weight and melting point of syndio-polybutadiene by the addition of various modifiers such as alcohols, nitriles, aldehydes, ketones, ethers, and cyano compounds. [Pg.531]

Free-Radical Polymerization. The best method for polymerising isoprene by a free-radical process is emulsion polymerisation. Using potassium persulfate [7727-21-1] as initiator at 50°C, a 75% conversion to polyisoprene in 15 h was obtained (76). A typical emulsion polymerisation recipe is given as follows (77). [Pg.5]

Specifications for soHd i7j -l,4-polyisoprenes are shown in Table 5 and include analyses for volatile matter, extractables, ash, and Mooney viscosity at 100°C. Standard method ASTM D1416 includes chemical analysis methods for volatile matter, extractables, and total ash, while ASTM D1646 includes Mooney viscosity (82). The Monsanto rheometer data for vulcanizates prepared by a standard recipe may also be specified. This formulation for vulcanizate (ASTM D3403) is mixed in a Banbury mixer in two passes with all but sulfur and accelerator added in first pass ... [Pg.6]


See other pages where RECIPE method is mentioned: [Pg.54]    [Pg.167]    [Pg.317]    [Pg.322]    [Pg.54]    [Pg.167]    [Pg.317]    [Pg.322]    [Pg.2344]    [Pg.47]    [Pg.35]    [Pg.43]    [Pg.108]    [Pg.110]    [Pg.159]    [Pg.201]    [Pg.496]    [Pg.170]    [Pg.365]    [Pg.439]    [Pg.439]    [Pg.348]    [Pg.485]    [Pg.29]   
See also in sourсe #XX -- [ Pg.311 , Pg.313 ]




SEARCH



RECIPE method midpoint impact categories

ReCipe Endpoint method

Recipes

© 2024 chempedia.info