Borderline crossings

Hybrid experiments and other borderline crossings References... 

Rigorous quantitative treatments lead to kinetic zone diagrams that distinguish between different extreme and borderline cases depending on which parameters controll the overall reaction (Fig. 2). A realistic picture is obtained from cross... 

In Figure 5, the hourly patterns of one day (24 hours) were projected on the training set. This day. May 17th, 1982, at Schiedam comprises two hours with complaints, viz., 13 and 14 hour. It is seen that the situation evolves from the area where no complaints are predicted towards the canplaint area. About 8.00 hour the borderline is crossed and indeed at 13.00 and 14.00 hour complaints are recorded. The 15th and 16th hour, that are clearly in the conplaint area, are not signalled, and the trace ends at 23 hours without conplaints in the non-coiplaint area as Wcis expected. 

Crossing the Borderline Between Sn1 and Sn2 Nucleophilic Substitution at Aliphatic Carbon... 

Furosemide, bumetanide, and torsemide may exhibit allergic cross-reactivity in patients who are sensitive to other sulfonamides, but this appears to be very rare. Overzealous use of any diuretic is dangerous in hepatic cirrhosis, borderline renal failure, or heart failure. 

The X-confused systems 100 and 101 exhibit borderline macrocyclic aromaticity, which results from the onium-type contributions 100 and 101, characterized by the presence of 18-electron aromatic circuits. For instance, the NH protons in 100 resonate at ca. 5.8 ppm, while those in the corresponding dication are observed at 5.3—4.4 ppm. These chemical shifts are intermediate between values expected of a nonaromatic porphyrinoid (S > 10 ppm) and those typical of aromatic systems (S < 0 ppm). The macrocyclic aromaticity is fully restored in the 3-substituted derivatives containing an sp3 carbon (104-105) or a carbonyl group (102-103), which is an additional reason for the enhanced reactivity of 100 and 101. In comparison, the pyrrolyl-substituted derivative 106 shows only moderate diatropicity, which is noticeably enhanced upon protonation [247], This effect is explained by cross-conjugation of the pyrrolyl substituent in the dication 107, which enables an 18-electron aromatic circuit in the macrocycle. 

Figure 1.14 Cut through a diffusion-bonded cross-flow arrangement of stainless steel microchannel foils. The crystal growth over the borderlines between the single foils is clearly shown. Thus, diffusion bonding led to the formation of a monolithic stainless steel device.

Gardner and Cowdry (1985) found an increase in dyscontrol in borderline patients taking alprazolam in a double-blind, placebo-controlled cross-over study. The dyscontrol included the following Overdose, severe Overdose, moderate Deep neck cuts Transverse wrist cuts Tried to break own arm Threw chair at child and Arm and head banging jumped in front of car. ... 

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