Big Chemical Encyclopedia

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

Articles Figures Tables About

Combination members

Most mammalian cells express more than one type of NT, often combining members of both gene families, CNT and ENT, in a single cell type. Transcripts for CNTl,... [Pg.53]

Homologous mono-alkyl ethers of ethylene glycol, such as monoethyl glycol (or 2-ethoxyethanol), HOC2H4OC2H5, form excellent solvents as they combine to a large extent the solvent properties of alcohols and ethers. The monoethyl and the monomethyl members have the technical names of ethyl cellosolve and methyl cellosolve respectively. Dioxan... [Pg.15]

B) Methiodi s. Members of Classes (i), (ii) and (iv) combine wdth methyl iodide (some very vigorously) to form quaternary methiodides. It is best to add the amine to an excess of methyl iodide dissolved in about twice its volume of methanol, allow any spontaneous reaction to subside, and then boil under reflux for 30 minutes (extend to 1 hour for Class (iv) except pyridine and quinoline). The methiodide may crystallise when the reaction-mixture cools if not, evaporate the latter to small bulk or to dryness, and recrystallise, (M.ps., pp. 553-554 )... [Pg.378]

The optimization procedure is canied out to find the set of coefficients of the eigenvector that minimizes the energy. These are the best coefficients for the chosen linear combination of basis functions, best in the sense that the linear combination of arbitrarily chosen basis functions with optimized coefficients best approximates the molecular orbital (eigenvector) sought. Usually, some members of the basis set of funetions bear a eloser resemblanee to the true moleeular orbital than others. If basis function a +i. [Pg.203]

It should be emphasized that the proeess of deleting or erossing off entries in various Ml, Ms boxes involves only counting how many states there are by no means do we identify the particular L,S,Ml,Ms wavefunctions when we cross out any particular entry in a box. For example, when the piapoP product is deleted from the Ml= 1, Ms=0 box in accounting for the states in the level, we do not claim that piapoP itself is a member of the level the poOtpiP product state could just as well been eliminated when accounting for the P states. As will be shown later, the P state with Ml= 1, Ms=0 will be a combination of piapoP and pootpiP. ... [Pg.253]

For each M , Ml combination for which one can write down only one product function (i.e., in the non-equivalent angular momentum situation, for each case where only one product function sits at a given box row and column point), that product function itself is one of the desired states. For the p2 example, the piapoot and piap.ia (as well as their four other Ml and Ms "mirror images") are members of the 3p level (since they have Ms = 1) and IpiapiPI and its Ml mirror image are members of the level (since they have Ml... [Pg.254]

Conversion to dialkyl ethers (Sec tion 15 7) On being heated in the presence of an acid catalyst two molecules of a primary alcohol combine to form an ether and wa ter Diols can undergo an intramo lecular condensation if a five membered or six membered cyclic ether results... [Pg.656]

A.lkyl Sulfosuccinate Half Asters. These detergents are prepared by reaction of maleic anhydride and a primary fatty alcohol, followed by sulfonation with sodium bisulfite. A typical member of this group is disodium lauryl sulfosucciaate [26838-05-1]. Although not known as effective foamers, these surfactants can boost foams and act as stabilizers when used ia combination with other anionic surfactants. In combination with alkyl sulfates, they are said to reduce the irritation effects of the latter (6). [Pg.450]

The reinforced window frame channel, eg, the large Russian RM channel (109) and the smaller Russian U25B channel (110), is essentially a window frame channel inside a plastic box which serves as the pressure vessel and main stmctural member. It combines some features of both window frame and plastic box constmction. Frames can be segmented, although with some difficulty, for fault power control. This constmction is difficult to disassemble for inspection and/or refurbishment. [Pg.432]

Chlorite is another mineral that is commonly associated with mixed-layered clays. Complete soHd solutions of chlorite mixed-layer minerals have not been identified. In contrast to iUite—smectite mixed-layer minerals, chlorite mixed-layer minerals occur either as nearly equal proportions of end-member minerals (Rl) or dominated by one end member (RO) (142). Mixed-layer chlorite may consist of any of the di—tri combinations of chlorite and chlorite mixed-layering occurs with serpentine, kaolinite, talc, vermicuhte, smectite, and mica. References of specific chlorite mixed-layer minerals of varied chemical compositions are available (142,156). [Pg.200]

Scheme 6 shows representative members of these three groups. Other combinations are possible and the design of an appropriate bielectrophile for use as a versatile synthon presents a considerable synthetic challenge, as by virtue of the structural entities involved they are extremely reactive. [Pg.124]


See other pages where Combination members is mentioned: [Pg.74]    [Pg.324]    [Pg.380]    [Pg.74]    [Pg.324]    [Pg.380]    [Pg.71]    [Pg.23]    [Pg.2410]    [Pg.326]    [Pg.565]    [Pg.28]    [Pg.177]    [Pg.306]    [Pg.258]    [Pg.571]    [Pg.41]    [Pg.50]    [Pg.318]    [Pg.174]    [Pg.212]    [Pg.317]    [Pg.342]    [Pg.446]    [Pg.46]    [Pg.61]    [Pg.229]    [Pg.523]    [Pg.226]    [Pg.257]    [Pg.274]    [Pg.328]    [Pg.268]    [Pg.23]    [Pg.261]    [Pg.176]    [Pg.18]    [Pg.36]    [Pg.41]    [Pg.47]    [Pg.460]   


SEARCH



© 2024 chempedia.info