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A big problem

Loss of circulation is not a big problem Ability to handle very high volumes of formation water High mud pump pressure requirements High casing/air line costs If parasite tubing Is used Some specialized equipment... [Pg.843]

A big problem with /t-type materials is their laigc instability in oxygen. This is exemplified by CW), the mobility of which can be as high as 0.08 cm" V 1 s l in ultra-high vacuum, but falls by four or five orders of magnitude upon exposure to air [105]. This could be due to problems of contacts, as illustrated by the fact that modifying the surface of the source and drain electrodes with tetrakisdimethylami-noethylene (TDAE) leads to a substantial increase in the mobility [I05. ... [Pg.574]

Here is where we run into a big problem. There is no way for me to give you problems that are appropriate. Every course goes at its own pace, in its own order, and with exams at different points in the course. I cannot give problems that will be perfectly appropriate for every student everywhere. So, how are we going to get practice Very simply. You are going to make your own problems, as described in the next section. [Pg.347]

In the second campaign in our pilot plant, however, there was a surprise. Adduct formation was completed with less than 0.1% starting material 32 remaining as expected, but after thermolysis the chemical engineers came to us with a problem. An assay of the reaction showed about 1% (and not 0.1% as we expected) of 32 Considering that 32 would not be rejected in isolation of the product, this was a big problem. [Pg.91]

If only one of these problems occurs it will not be a big problem, but if more than one problem occurs it will lead to under dimensioning and freezing will take place. The easiest and most common ways to solve the problem is either to drill the borehole deeper, drill a new borehole or to reduce the heat extraction. To reduce the heat extraction an additional heater must be used. [Pg.197]

Mattigod, S., Mercury remediation A tiny solution to a big problem—using nanotechnology for adsorbing mercury, Water and Wastewater Products, 9, 20-24. [Pg.1232]

Predation (e.g. by foxes and birds of prey) may also be a serious cause of mortality in free-range husbandry. Foxes can be kept away with a solid fence, which can be supplemented by an electric fence. Birds of prey are not a big problem for poultry houses that are closed at night and free of holes. However, keeping birds of prey such as the hawks away is not easy, especially for farms surrounded by forest or in a landscape with a lot of trees. In such situations, low structures should be provided as hiding places for the hens. [Pg.134]

Storage pathways are off degradative pathways are on. Glycogen has been depleted, and maintaining glucose levels becomes a big problem. AA = amino acids KB = ketone bodies ALA = alanine LAC = lactate. [Pg.231]

A big problem in asymmetric hydroformylation is that the chiral aldehyde products may be unstable and may undergo racemization during the reaction. This problem is even more serious for the Pt catalyst systems, which are usually plagued by slow reaction rates. Stille et al.121 tackled this problem by using triethyl orthoformate to trap the aldehyde products as their diethyl acetals and consequently increased the product ee values significantly. [Pg.385]

I was still in the flight or fight cycle. I always had a strong sense of self, and I wanted to get well. So I knew to seek counseling. I spent three years with a very good counselor who helped me through some of that stress. Now depression isn t a big problem for me. [Pg.214]

Photolytic breakdown is a big problem when we light the laboratory with fluorescent strips. [Pg.332]

The above strategy, using three primary colors as phosphorescent dopants, has a big problem in controlling the efficiency of the energy transfer, which eventualy will result in... [Pg.379]

One psychologist was a particular irritant. Anxious to add to his personal list of open literature publications, he teamed up with our newest psychiatrist. They started removing clinical records and extracting data from studies compiled by doctors who were no longer in the Army. Some were volunteer charts from my own experiments. This was not a big problem until they decided to write the papers under their own names. They argued that the data had been abandoned and were fair game. ... [Pg.185]

The junior officers in the room have heard this before, but the final summation somehow jolts them. This will actually happen. It may bring the solution to a big problem. Until now, because they blend into the noncombatant civilian population, coalition troops could distinguish the terrorists only by the rifles and rocket launchers they carry. [Pg.383]

One change that is sometimes made during long-term treatment is the addition of a second medication to treat the auxiliary symptoms of narcolepsy. For many patients, these other symptoms do not occur often enough or are not severe enough to require treatment. However, the auxiliary symptoms (especially cataplexy) can be a big problem for some narcolepsy patients. The stimulants used to treat the sleep attacks can also provide some mild relief of cataplexy, but the benefit is often not sufficient. [Pg.281]

Another simple delivery system is a common child s water gun. A big problem is the fact that most of the samples on the market are, quite simply, junk. The newer motorized ones would be nice, but they are either just too large or look too much like firearms. That just wouldn t do. The main points to consider when choosing a water-gun are -... [Pg.47]

The release of carbon dioxide into the environment has come under scrutiny lately because of its possible connection to global climate change. A single car s emission is not a big problem, but the exhaust of millions of cars, along with other combustion engines, adds up. [Pg.148]

Regulatory approval for aspartame produced by Nutrasweet was very long and expensive, although this was no longer such a big problem for Holland Sweetener Co. [Pg.130]

There s just one problem. A big problem. You look around. Your bedroom is a cheap facade. The bird outside is a mechanical contrivance... [Pg.118]

Many scientific calculators write scientific notation using the letter E instead of a power of 10. On your calculator screen, you ll see 2.3E26 instead of 2.3 x 1026 or 1.23E-39 instead of 1.23 x 10 39. This isn t a big problem — you just want to be aware of this cryptic notation so that you know what it means and can write it correctly. [Pg.60]

The NSR technology is regarded as the most reliable and attractive de-NOx method. However, catalyst degradation by SOx poisoning is a big problem. Sulfate was detected on the NSR catalyst after the aging test. S02 is oxidized and reacts with the NOx storage materials to form sulfates, which means the... [Pg.30]

A. Too many Whitefly is a big problem for greenhouse grown plants. Aphids, slugs, caterpillars, thrips, spider mites, and scale insects can also damage your plants. Root rot and stem rot can be problems. Fungal spots can appear in leaves. It is not known which plant viruses attack Salvia divinorum but many attack other sages. [Pg.36]

There was a big problem with the initial beam engine design. When the cold water was admitted into the steam cylinder, the water not only absorbed the latent heat of the condensing steam but also cooled the iron walls of the steam cylinder. Then, when the next charge of steam was admitted to the cylinder from the boiler, a lot of the steam s heat was wasted in reheating the iron walls of the cylinder. Then, again, an awful lot of cold water was wasted in cooling the steam cylinder each time the motive steam had to be condensed. [Pg.216]

This is still the most widely used detection method for carbohydrates, in spite of its lack of sensitivity. It has the advantage of being universal, and some of its drawbacks can be avoided by suitable sample preparation. This low sensitivity does not present a big problem in most foodstuffs,... [Pg.295]

Michael Schrage You picked the perfect example. I am going to postulate that the single most important thing that must be done for biological warfare is prevention and immunization because prophylactic cures would be administered too late to save patients. I want to overemphasize vaccination and underemphasize therapeutics. I can see a very serious debate about which approach is best. We agree that biological warfare is a big problem, but what is the tradeoff between prevention, prophylactic, and cure ... [Pg.110]


See other pages where A big problem is mentioned: [Pg.161]    [Pg.345]    [Pg.231]    [Pg.169]    [Pg.190]    [Pg.235]    [Pg.94]    [Pg.272]    [Pg.269]    [Pg.83]    [Pg.223]    [Pg.19]    [Pg.472]    [Pg.217]    [Pg.440]    [Pg.377]    [Pg.94]    [Pg.83]    [Pg.14]    [Pg.161]    [Pg.351]    [Pg.206]   


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