Sentences with phrase «basicity of the amine»

«This work is the first attempt to develop computer models for fully evaluating and predicting carbon dioxide absorption properties of amine solutions,» Fourches says.

While many methods are now available for synthesizing amines containing aryl groups, the synthesis of amines containing alkyl groups still pose a challenge.

The second uses various forms of chemistry — in the form of amine or ammonia scrubbers, special membranes or ionic liquids — to pull carbon dioxide out of a more mixed set of exhaust gases.

In the companion manuscript published by Ramachandran's group, the application of the simplest of the amine - boranes, ammonia borane, for hydroboration has been described.

«Discovery could lead to safer, cheaper production of amine - boranes.»

Also, the methylation of the amine (compound 163) reduced the anti-HIV activity.

On the other hand, in order to reduce the basicity of the amine, addition of electron withdrawing groups on the phenyl ring, such as F (e.g. 132) and CF3 (e.g. 133), led to compounds with high absorption potentials, but, with a concomitant loss of antiviral activity.

Benzoxazines are the reaction products of an amine, a phenol and formaldehyde.

This configuration took advantage of the amine group's affinity to water, a characteristic that is comparable to surfactants, like soap.

I am a process engineer who has designed a number of amine - based CO2 removal systems, including CO2 removal from flue gas.

B6 is also needed for the creation of amines, like serotonin, melatonin, epinephrine, and norepinephrine that help to regulate mood, sleep, and stress, respectively.

To capture that amount and process all that exhaust gas is a huge challenge regardless of halving the cost of amine scrubbing.

Steam - stripping of the amine produces a nitrogen - free stream of H2S and CO2.

The environmental and health effects of amines are not very well known, but a trio of Norwegian institutes along with the University of Oslo released a report early this month according to Sweden's Processnet, in which scientists voiced their concern about nitrosamines and their possible spread into the environment.

A while back we were presented with the discovery of amines in the stratosphere -LRB-?).

Not exact matches

Amine Khechfé, co-founder of Endicia, is Chief Strategy Officer for the Stamps.com family of companies, including Endicia.

Endicia co-founders, Harry Whitehouse and Amine Khechfé, for instance, firmly believe that there's nothing more thrilling than tackling the challenges of ecommerce.

Amine Rahal is a web entrepreneur with over 20 years of experience in the web development and internet marketing industry.

Ferreira's previous research found that beer marinades effectively reduce levels of another group of carcinogens called heterocyclic amines (HCAs), which form when amino acids, sugars, and creatine in meats react at high temperatures.

That said, says Ingall, all wine contains a range of ingredients, from crushed bees to amines, that may cause allergic reactions in some unlucky people.

Accidentally used coconut amines instead of vinegar.

Not only do I have a gluten intolerance but a wheat allergy Must steer clear of preservatives, especially of sulphur base, all glutemate flavour enhancers (600 range additives), natural foods high in glutemates such as broccoli, spinach and tomatoes; sauces; and some foods high in Amines such as chocolate (yeah I know....

This is the fourth time Ozil has suffered from undefinied «illnesses» this season, and there are certain members of the Arsenal clan that are not completely convinced that the German is just feigning illness to spend more time with his new betrothed Amine Gulse, who he is set to wed in Turkey this summer after the World Cup is over.

SEE ALSO: (Image Gallery) Amine Gulse: 17 hot photos of Turkish model who may be Mesut Ozil's new WAG Alice Goodwin: Super hot ex-Arsenal & Liverpool WAG leaves little to the imagination in Instagram bikini pic Arsenal «close in on signing of $ 97.4 m La Liga duo to complete PERFECT squad» — player to snub Man Utd for Gunners

It's a shame we'll be spending that kind of money on Lemar.Everyday potential potential potential.If people watched a lot of football they'll know there are cheaper and players just around his age who are as talented or even have more potential.One guy is Amine Harit (remember the name) who's also French.

Arsenal have taken 18 - year - old Nantes midfielder Amine Harit on trial ahead of a deal to sign him permanently.

Bayern have a 16 - point lead over Schalke, who enjoyed a 2 - 0 win at Stuttgart with goals from Naldo and Amine Harit, while Jeremy Toljan spared Borussia Dortmund a fourth home defeat of the season with a stoppage - time equaliser in their 2 - 2 draw with Freiburg.

Les Bleus squad contained some elite talents including Lucas Tousart, Kylian Mbappe and Amine Harit, all of whom have impressed for their clubs this season and Augustin has enjoyed a decent season with PSG too.

Truly, knowing who Jammeh is and reading many political science theories about the manipulative nature of dictators that ranges from Pol Pot of Cambodian (politician and revolutionary who led the Khmer Rouge) and Nuon Chea (chief ideologist of the Khmer Rouge), Idi Amine of Uganda and Mobutu of Democratic Republic of Congo, I am disturbed by the same mechanism being explored by Jammeh.

This series of new computer models is the first step toward the design of cheaper, more efficient amine chemicals for capturing carbon dioxide — and reducing harmful CO2 emissions — in industrial installations.

However, amine scrubbing is a costly process, so researchers are constantly looking for new amine chemicals with more desirable qualities such as fast absorption rates, high CO2 capacity, and low heat of reaction.

Afterwards, they recovered a variety of organic molecules, including fatty acids, amines, and an amino acid.

«The next step for us is to utilize these computer models to screen a virtual library of hundreds of thousands of new amines, and identify some new amine candidates predicted to have way better carbon absorption properties.

The models were found to be capable of reliably discriminating between amines with high absorption properties versus those that were less efficient.

Rice graduate student Chih - Chau Hwang, lead author of the paper, first tried to combine amines with porous carbon.

Hofmann knew that quinine, the only effective treatment for malaria and thus vital to the British Empire, was also an amine, with a chemical structure very similar to that of several coal tar components, including naphtha.

Hofmann had him working on a project that involved breaking down some key components of coal tar to their nitrogen bases, the amines.

17 percent higher in those estimated to have consumed the highest levels of heterocyclic aromatic amines (HAAs)-- chemicals formed when meat protein is charred or exposed to high temperatures — compared to those with the lowest intake.

Conventional perovskite nanocrystals capped with ligands consisting of long straight - chain amines show poor stability in solvents such as water and alcohol.

(Freshwater fish like ayu live in an environment less salty than the inside of their cells, so they don't accumulate amino acids and amines.

Another $ 3.5 - billion plant planned for Sweetwater, Tex., would burn pulverized coal to generate 600 MW of electricity while capturing its 5.75 million metric tons of emissions postcombustion with amine or ammonia scrubbers or, possibly, with advanced membranes that separate CO2 from other flue gases.

At Loy Yang Power Station in Victoria, a pilot plant run by CSIRO will capture 1,000 metric tons of CO2 a year; the Australian research organization has collaborated with China's Huaneng Group to use an amine scrubber to capture CO2 from a co-generation power plant in Beijing and then sell it.

«Although metal - catalyzed cross coupling reaction has completely revolutionized the synthesis of aryl amines, it can hardly be used to synthesize alkyl amines,» says Xile Hu.

6 Unfortunately, nitrites also combine with amines, the natural breakdown products of proteins, to form cancer - causing nitrosamines.

Amines are used widely in bioactive molecules, drugs, and various organic materials, and preparing them is one of the most important tasks for synthetic chemists in both academia and industry.

The Department of Energy estimated in May 2007 that a new power plant burning pulverized coal and equipped with amine scrubbers to capture 90 percent of the CO2 would make electricity at a cost of more than $ 114 per megawatt - hour (compared with just $ 63 per MWh without CO2 capture).

These were each treated with diethylamine and sodium triacetoxyborohydride, which causes reductive amination and the synthesis of tertiary amine - based ionic liquids.

Now, the lab of Xile Hu at EPFL has developed a new method that can efficiently produce alkyl amines by using photocatalysis alongside copper catalysis.

These PILs are fairly inexpensive to prepare, because they are made by mixing together an acid, such as acetic acid (more commonly known as vinegar), and a base (a chemical class of materials called amines).

The team measured the amount of organic material in each sample and isolated and identified amino acids — the building blocks of proteins — as well as amines — the products of amino acid degradation.