The title compound, C(18)H(30)N(4)O(2), contains two tert-butyl urea groups, each connected to a benzene ring though a methyl-ene group. One of the groups occupies a position almost normal to the aromatic plane with a C-N-C-C torsion angle of -94.4 (4)°, while the other is considerably twisted from the ring with a C-N-C-C torsion angle of -136.1 (4)°. In the crystal, pairs of mol-ecules are con...

Human knowledge is mostly in the form of unstructured text. Text can be transcribed into various languages such as Thai language. To extract from text, natural language tasks word segmentation, Elementary Discourse Unit (EDU) and anaphora resolution needed tasks. Some interesting phenomena non-referential ellipsis owner are significant problems that necessary to resolve before constructing comp...

An experimental chemical N-[2-(2-oxo-1-imidazolidinyl)ethyl]-N'-phenylurea (EDU), is an effective protectant against acute and chronic foliar injury due to ozone (0(3)) when sprayed on intact leaves or supplied to the plants through soil application. An 0(3)-sensitive snap bean cultivar (Phaseolus vulgaris L. ;Bush Blue Lake 290') was systemically treated with EDU (0, 25, 50, and 100 milligrams...

In an open-top chamber study in east Texas, ozone-sensitive loblolly pine (Pinus taedu L.) seedlings were treated with either the antioxidant Ozoban (74.5% sodium erythorbate active ingredient (a.i.)) at 0, 1030, or 2060 mg liter-’ or ethylenediurea (EDU 50% a.i.) at 0, 150, or 300 ppm every 2 weeks while being subjected to a range of ozone exposures beginning in April 1994. The ozone exposures...

1 Instytut Informatyki, Uniwersytet Warszawski, Banacha 2, 02-097 Warszawa, Poland. chlebus@mimu., edu.pl 2 Laboratory for Computer Science, Massachusetts Institute of Technology, 545 Technology Square NE43-368, Cambridge, MA 02139, USA. robdep@theory. Ics. mit. edu Department of Computer Science and Engineering, University of Connecticut, 191 Auditorium Road, U-155, Storrs, CT 06269, USA. aas@...

OBJECTIVE To determine whether (a) social networks influence the extent to which college students initiate and/or maintain reductions in drinking following an alcohol intervention and (b) students with riskier networks respond better to a counselor-delivered, vs. a computer-delivered, intervention. METHOD Mandated students (N = 316; 63% male) provided their perceptions of peer network members...

Two different self-help training programs (multimodal cognitive-behavioral training (CBT) and applied relaxation (AR)) presented via the Internet were compared with an educational intervention (EDU) in an RCT. Sixty-five children and adolescents (mean age: 12.7 years) with recurrent headache (at least 2 attacks per month) were each assigned to one of the three treatment conditions. The main out...

Taste buds are clusters of polarized sensory cells embedded in stratified oral epithelium. In adult mammals, taste buds turn over continuously and are replenished through the birth of new cells in the basal layer of the surrounding non-sensory epithelium. The half-life of cells in mammalian taste buds has been estimated as 8-12 days on average. Yet, earlier studies did not address whether the n...

EXPERIMENTAL ANALYSIS OF A MTXED-MODE PARALLEL ARCHITECTURE PERFORMING SEQUENCE SORTING Samuel A. Fineberg, [email protected] Thomas L. Casavant, tomc@eng. uiowa . edu Parallel Processing Laboratory Department of Electrical and Computer Engineering University of Iowa Iowa City, IA 52242 USA Howard Jay Siegel, h j @ecn. purdue . edu Parallel Processing Laboratory School of Electrical En...

The synthesis of a series of N,N'-disubstituted acyclic (AL) and cyclic (CL) aza-bridged ligands incorporating 2,2-pipryidine subunits is described. H-NMR and IR spectral data support the proposed ligand structures. Dynamic H-NMR studies on diurea and diamide derivatives point to the presence of slowly interconverting conformers on the H-NMR time-scale, owing to N−H···N hydrogen bonding and/or ...