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Parental authority

Each assertion of parental authority can be an invitation into conflict for the independence-minded child. It is also an opportunity, however, to let the mid-adolescent know that parents are committed to keeping a protective family structure around the boy or girl at this impetuous and impatient period of growth. They will not be backed away from this responsibility by the intensity of his or her objections. [Pg.162]

Explain confidentiality early on. Under-18s are subject to parental authority, and you must share things with Nick to keep Kelly safe. You don t have to pass on non-risk-related information. [Pg.533]

Frazier and Bond both believed that black landholding had promoted family stability. They were correct. Black farmers who owned their land tended to have larger families, and the family heads, invariably fathers, exerted more parental authority by virtue of their ability to employ their children and endow them with land. Indeed, in examining the landowning families of Washington Parish enumerated in the U.S. Census between 1870 and 1910, the similarity between the black families and the white families is remarkable. If the census had not classified people according to race, it would be all but impossible to tell black and white families apart. [Pg.27]

The present authors have found that the preparation of 7V-acetyl aziridine derivates provides the most secure method of differentiating aziridines from primary amines which are alternate reaction products in a number of cases. The infrared spectra of the former derivatives show only a peak at 1690 cm" for a tertiary amide peaks at ca. 3440 and 1530 cm" indicative of a secondary amide are absent. Acetylation also shifts the aziridine ring protons to a lower field in the NMR by ca. 1 ppm relative to the parent aziridine. The A"-acetyl aziridines are hydrolyzed with 3% methanolic potassium hydroxide. " Published NMR spectra of several 16j5,17j -aziridines reveal resonance patterns resembling those of the respective epoxides. " ... [Pg.31]

As the parent of actinium in this series it was named protoactinium, shortened in 1949 to protactinium. Because of its low natural abundance its chemistry was obscure until 1960 when A. G. Maddock and co-workers at the UK Atomic Energy Authority worked up about 130g from 60 tons of sludge which had accumulated during the extraction of uranium from UO2 ores. It is from this sample, distributed to numerous laboratories throughout the world, that the bulk of our knowledge of the element s chemistry was gleaned. [Pg.1251]

Structure-activity studies of 5,6,7,8-tetrahdyro-5,5,8,8-tetramethyl-2-quinoxaline derivatives necessitated the preparation of thiophene-containing compound 17. Stetter conditions using thiazolium salt 20 as catalyst resulted in the preparation of 1,4-diketone 21 from 18 and 19. Condensation of 21 with phosphorus pentasulfide followed by saponification resulted in 17. In this fashion, the authors replaced the amide linker of parent compound 22 with the rigid thiophene moiety. [Pg.211]

Few other reactions of series of substituted pyridines have been investigated extensively. Dondoni, Modena, and Todesco have measured the rate of N-oxidation of a limited series of pyridines and found a good correlation with normal u-values with a p-value of — 2.23. The A-alkylation of pyridines with alkyl iodides in nitrobenzene has been studied by Brown and Cahn and by Clarke and Rothwell. Unfortunately, the only data available are for the parent compound and for alkyl derivatives, and, since the a-values for the various alkyl groups in a given position are substantially constant, this leaves a correlation of only three independent points. However, the rates of A-alkylation of the j8- and y-alkyl derivatives are so nearly equal that it appears as if no correlation existed. Clarke and Rothwell have also studied the alkylation with allyl bromide in nitromethane at various temperatures, and in this case a more extensive series is available. The authors state that no overall Hammett correlation is obtained however, the j8-substituted derivatives fall on one straight line and the y-derivatives on another one with a different slope. The data are shown in Fig. 2. The line for the j8-compounds, p = — 2.53 0.31, r = 0.95, is seen not to be very good the line for the y-derivatives, p = — 1.42 0.06, r = 0.99, is much more satisfactory. It does not seem likely that the discrepancy is due to the intervention of resonance effects, since in this case one would expect the correlation for the y-derivatives to be poorer than that for the j8-analogs. More extensive studies with a wider variety of substituents would seem very desirable. [Pg.227]

Ur gestein, n. primitive rock parent rock (Ceram.) native kaolinic rock (from which kaolin is obtained by elutriation). -gewicht, n. standard weight, -granit, m. primitive granite, -heber, m. author inventor orig inator, founder. [Pg.473]

Herbert Charles Brown (1912-20D4) was born in London to Ukrainian parents and brought to the United States in 1914. Brown received his PhD. in 1938 from the University of Chicago, taught at Chicago and at Wayne State University, and then became professor of chemistry at Purdue University. The author of more than 1000 scientific papers, he received the 1979 Nobel Prize in chemistry for his work on organoboranes. [Pg.223]

Experimentation showed that the protein was not glycosylated and that the sequence at the iV-amino acid terminus corresponded to that expected. The C-terminus sequence, however, did not correspond to that predicted and these data were interpreted in terms of the presence of a heterogeneous, truncated, protein. A study of the tryptic digest fragments from this protein with matrix-assisted laser desorption ionization (MALDI) with post-source decay enabled the authors to suggest the positions at which the parent protein had been truncated. [Pg.199]

Radical IV can be considered as a unique phosphorus radical species. Reduction of the parent macrocycle with sodium naphtalenide in THF at room temperature gave a purple solution. The FPR spectrum displayed a signal in a 1 2 1 pattern, with flp(2P)=0.38 mT. DFT calculations on radical IV models indicated a P-P distance of 2.763 A (P - P is3.256 A in the crystal structure of the parent compound and the average value of a single P-P bond is 2.2 A). According to the authors, the small coupling constant arises from the facts that the principal values of the hyperfine tensor are of opposite sign and that the a P P one electron bond results from overlap of two 3p orbitals [88]. [Pg.69]

In dibenzothiophene-S,S-dioxide the S atom is in a ring, and hence more constrained. The yield of SO2 in the radiolysis is linear with the dose to about 13 Mrad after which it levels off as in p,p -ditolyl sulfone. However, the yield of SO2 in this case is much lower (a factor of 25) than in the case of p,p -ditolyl sulfone (G = 0.002 compared to G = 0.05). This stability of the dibenzothiophene sulfone could be partially due to back reaction to reform the parent sulfone and partially due to more efficient energy delocalization. The expected biphenylene product was not detected due to limitations of the analytical method. Bowmer and O Donneir studied the volatile products in y-radiolysis of dialkyl, alkyl aryl and diaryl sulfones. Table 2 gives the radiolytic yields of SO2 and of the hydrocarbon products of the alkyl or aryl radicals. The hydrocarbon products are those obtained either by H atom abstraction or by radical combination. The authors suggested the mechanism... [Pg.914]

In 1994, the same authors reported the synthesis of corresponding oxazolines tethered to sulfoxides by ortholithiation of the parent 2-phenyl oxazoline with butyllithium followed by addition of either (5)- or (/ )-/ -tolylmenthyl-sulfinate. Applied as ligands in the test reaetion, these diastereomerie ligands gave very different results, as shown in Seheme 1.25, thus demonstrating the... [Pg.27]

The two Mossbauer levels of Pt, 99 keV and 130 keV, are populated by either EC of Au(fi/2 = 183 days) or isomeric transition of Pt(fi/2 = 4.1 days). Only a few authors, e.g., [323, 324] reported on the use of Pt, which is produced by thermal neutron activation of " Pt via " Pt(n, y) Pt. The source used in the early measurements by Harris et al. [322, 325] was carrier-free Au diffused into platinum metal. Walcher [326] irradiated natural platinum metal with deuterons to obtain the parent nuclide Au by (d, xn) reactions. After the decay of short-lived isotopes, especially Au(fi/2 = 6.18 days), Au was extracted with ethyl acetate, and the Au/Pt source prepared by induction melting. Buym and Grodzins [323] made use of (a, xn) reactions when bombarding natural iridium with... [Pg.339]

The MDL and practical quantitation limit (PQL) should be appropriate for the objectives of the analysis. MDL refers to the minimum concentration of the compound of interest that can be measured and reported with a specified confidence (99% probability) that the concentration is above zero. The registrants must provide or develop an analytical method for water for the parent pesticide and its degradates that has an MDL of 0.01% of the label application rate (calculated as the average concentration in the top six inches of soil), or 0.05 pgL , whichever is lower. PQL refers to the lowest concentration at which the laboratory can confidently quantify the concentration of the compound of interest. The study authors must report all samples with concentrations above the MDL as detections, including those below the PQL in which the concentration cannot be quantified. In addition, the study authors must provide sample equations to demonstrate how the PQL was calculated. [Pg.612]


See other pages where Parental authority is mentioned: [Pg.150]    [Pg.22]    [Pg.16]    [Pg.22]    [Pg.96]    [Pg.467]    [Pg.253]    [Pg.150]    [Pg.22]    [Pg.16]    [Pg.22]    [Pg.96]    [Pg.467]    [Pg.253]    [Pg.206]    [Pg.125]    [Pg.177]    [Pg.171]    [Pg.528]    [Pg.7]    [Pg.266]    [Pg.155]    [Pg.98]    [Pg.134]    [Pg.36]    [Pg.155]    [Pg.163]    [Pg.186]    [Pg.108]    [Pg.71]    [Pg.528]    [Pg.119]    [Pg.224]    [Pg.190]    [Pg.318]    [Pg.324]    [Pg.99]    [Pg.300]    [Pg.433]    [Pg.437]    [Pg.443]    [Pg.696]   
See also in sourсe #XX -- [ Pg.150 ]




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