Secondary director

Biaxial fluctuations (3 2 are degenerated, whereas the eigenfunctions are just mirror images with respect to the middle plane of the cell. The few lowest modes axe expelled from the part of the film where they Ijend the secondary director field and so they effectively represent the director fluctuations (see Fig. 8.10b). Higher modes are spread over the whole film whereas the unfavorable manner of biaxial fluctuations is compensated by the shorter wave vector of a deformation. 

Fig. 5.3. A Schematic diagram of the molecular arrangement in a biaxial nematic phase (Nb) comprised of discoid-shaped mesogens. The primary director is designated by the usual letter, n, and the secondary director, o, is orthogonal to n.

The two-dimensional powder pattern is a sum of different Lorentzian lines originating from all orientations of the major and secondary directors with respect to the magnetic field [7],... 

Figure 5-7. Orientation process for biaxially aligned samples, with n being the main director and b the secondary director, (a) Homeotropically oriented sample, polydomain with respect to b (b) tilted structure in the presence of the magnetic field H, biaxially aUgned c) relaxed biaxial structure without the magnetic field. Figure adapted from [9]...

Take the initiative to meet your audience. If you do meet the admissions committee, you can fine-tune your essay to suit their specific requirements and preferences. Typically, each admissions director is in charge of a geographical area of the country, or of the world if the school draws or wants to draw international students. They travel to those areas to attend college fairs, conduct interviews, and speak at secondary schools. They are available to applicants to answer questions and provide a better idea of what the school is like (especially if they are an alumni/ae). 

No heterocycle containing a C=N bond is as powerful a director as the oxazolines or tetrazoles described above, but their imidazoline analogues 132 direct well if deprotonated to the amidine equivalent 133 of a secondary amide anion (Scheme 61). Pyrazoles 134 also direct lithiation, but need protecting with a bulky Af-substituent to prevent nucleophilic attack by the base (Scheme 62). ... 

The most advanced synthetic methods involve chiral directors that have C2 symmetry. These are discussed first for x-chloro boronic esters (Section 1.1.2.1.2.1.) and then for the bromo analogs, which are better in reactions involving enolates (Section 1.1.2.1.2.2.). The first syntheses of secondary alcohols utilized pinanediol as chiral director (Section 1.1.2.1.2.3.). The method is marginally successful for some tertiary alcohols (Section 1.1.2.1.2.4.). 

After discovery of the higher stereoselectivities made possible by the zinc chloride catalysis, the synthesis was applied to several secondary alcohols having two or more stereocenters15. The first of these (35,4S)-4-methyl-3-heptanol, was first made with (S)-pinanediol as the chiral director, but has since been made more stereoselectively with (R,R)-2,5-dimethyl-3,4-hexanedi-ol (Section 1.1,2.1.2.1.). Another insect pheromone, eldanolide, requires the use of (R)-pinane-diol in order to obtain the natural enantiomer, and introduces the use of an enolate as well as an allylic Grignard reagent for C-C bond formation15. 

Cutoff Explosive Charge is that explosive charge in a dependent or secondary borehole that is unburdened or exposed as a result of the rock movement caused by a prior charge Ref Dr. R.W.Van Dolah, Research Director, Explosives Research Center, US Bur Mines, Pittsburgh, Penna private communication,... 

A,A-Dimethylbenzamides can be used as lithiation directors even under conditions that lead to alkyllithium attack at the carbonyl group to give ketones. The tetrahedral intermediate in this sequence 196 is a good director of lithiation (note its similarity to a deprotonated secondary amide) and an excess of organolithium intercepts this intermediate and... 

S. M. Aldoshin (Director). This session included four presentations. Professor N.P. Konovalova reported on antioxidants and donors of nitrogen monoxide (antitumor effects of nitroxides and NO-donors) the report of N.A. Sanina and S.M. Aldoshin was concerned with a new class of NO-donors (synthesis, structure, properties, and practical use of sulfur-nitrosyl complexes of iron). Free-radical mechanisms of induction and development of secondary necrosis after gun wounds were the subject of the lecture by G.N. Bogdanov L.D. Smirnov reported on pharmacological properties and promising clinical application of antioxidants of the heteroaromatic array. 

ABA Secondary Triage Policy. Secondary triage should be implemented by the Burn Center Director when the burn center s surge capacity is reached. Transfer of burn patients should be to verified burn centers when feasible, then to other burn centers, within the first 48 hours following the incident when possible. 

For purposes of NDMS involvement in regional burn disasters, the ABA recommends that the primary function of the NDMS disaster teams should be to assist the local burn center director with secondary triage of burn patients to other burn centers, according to the following prioritization ... 

Secondary amides may direct ortho lithiation, but they must first be deprotonated. This makes them somewhat weaker ortho directors than tertiary amides, but they may still serve the purpose quite well. For example, the lithiation and addition of benzamide (12) to aldehyde (13) was us in a synthesis of 11-deoxycaiminomycinone (Scheme 8). More recently, it has been shown that the amide monoanion may be obtained by addition of a phenylsodium to an isocyanate. ... 

The teachers in our community might want more details about the process of the project, or the actual numbers on the various features. Some other readers, like local secondary teachers and students, might be studying our website for insights into what we teach (and value) at UNR. Certainly, the director of the Core curriculum had indicated an interest in a careful descrip-... 

Muller, Paul Hermann (1899-1965) Swiss Chemist Paul Hermann Muller was born at Olten, Solothurn, Switzerland, on January 12, 1899. He attended primary school and the Free Evangelical elementary and secondary schools. He began working in 1916 as a laboratory assistant at Dreyfus and Company, followed by a position as an assistant chemist in the Scientific-Industrial Laboratory of their electrical plant. He attended Basel University and received a Ph.D. in 1925. He became deputy director of scientific research on substances for plant protection in 1946. 

Medical backup must be available, in a timely manner, at all times. If not provided by the medical director, medical backup may be provided by those providing medical direction or other individuals designated by the medical director. All medical backup must be provided by board-certified or board-prepared medical toxicologists. Other individuals identified and qualified by the medical director (e.g., fellows, managing director) may serve as immediate certified poison center backup if timely secondary backup is provided at all times by a board-certified or board-prepared medical toxicologist. Direct clinical effort as backup can be applied to item 4.A. above. 

Experiments demonstrate that at even higher Er, the rolls become unstable and irregular. Ultimately, defect lines called disclinations form in the flow direction. As the linear analysis concerns the behavior of infinitesimal disturbances, the growth of the instability and further bifurcations are inaccessible to such analyses. This motivated Feng, Tao, and Leal to carry out a direct numerical simulation of a sheared nematic. Using the LE theory, with the one-constant approximation, they predicted a cascade of instabilities illustrated in Fig. 3. Steady state rolls first appear at Er = 2368. The director twists toward the flow (z) direction at the center of the cells. With increasing Er, the secondary flow and the director twisting intensify. 

In this way, the secondary school science gradually distanced itself from the initial promise of vocational bias, became academic and remained unaffected by the scientific research of local import and in 1941, the Director of Public Instructions, Ward (1941), suggested ... 

In those instances, where the Study Director is physically unable to exert this immediate control over the actual conduct of a study, the concept of the Principal Investigator can be put to use. The Principal Investigator, as a Secondary Level Study Director bears the same responsibilities as the Study Director himself for the experimental, GLP compliant conduct, although only for a defined part, of a study. The Principal Investigator is not responsible for the study plan, nor can he approve any amendments to it. The Principal Investigator has, however, to assume responsibility for the defined, delegated part of the study by signing his own compliance statement. 

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