All-or-nothing

The conformational transitions in the presented model take place accord-itig to the all-or-nothing law, i.e. they occur at the certain r.h. value. The same behaviour has been observed, for example, for the helix-coil transition of the model double-stranded structure A(pA)i7-U(pU)i7 [24]. It is worth noting that this structure is homogeneous, the same is supposed in our model. 

A DBMS performs what is called transaction management. This process allows multiple users to access and store data in the database without cormption. The abiUty to do this is particularly important when data are being written to the DBMS, because power intermptions or hardware failure can cause database transactions to be incompletely processed. Transaction managers use the "all or nothing" principle all the data is written to the DBMS, ie, the transaction is completed, or none of it is written. 

Chung and coworkers tried to observe similar species in y-irradiated DMSO-h6 at 77 K, however, repeated attempts were unsuccessful. Besides no free -CH3 radicals were detected in the y-irradiated DMSO-h6. They suggested that this remarkable difference of an all-or-nothing deuterium effect might be connected with the very much larger reactivity of the methyl radical in a subsequent reaction of hydrogen abstraction due to the greater reactivity of the C—H over the C—D bond. 

Resistance development is not an all-or-nothing phenomenon and in general gradually increases over time. Overall, three phases in the evolution of antiretroviral drug resistance can be discerned (Fig. 1). 

Missing values are handled in an all or nothing way, so if you exclude missing values for one variable, you end up excluding all data for that record for the other variables in the summary. 

Yes. The neighbors have persuaded the owner to block access for construction traffic. Whereas if we sell the whole property, they can use the back gate. That lane s a byway—public road— even though it s not asphalted. It s all or nothing, I m afraid. ... 

Now that the definition of a volatile liquid has been settled, the expert system could apply the rule. However, this approach is clearly unsatisfactory. The all-or-nothing crisp set that defines "volatile" does not allow for degrees of volatility. This conflicts with our common sense notion of volatility as a description, which changes smoothly from low-boiling liquids, like diethyl ether (boiling point = 34.6°C), which are widely accepted to be volatile, to materials like graphite or steel that are nonvolatile. If a human expert used the rule ... 

Exposure to the fetus in the first 2 weeks after conception may have an all or nothing effect (i.e., could destroy the embryo or have no ill effect). Exposure during the period of organogenesis (18 to 60 days postconception) may result in structural anomalies (e.g., methotrexate, cyclophosphamide, diethylstilbestrol, lithium, retinoids, thalidomide, certain antiepileptic drugs, and coumarin derivative). 

Some 150 compounds were considered and the best fit regression equation devised using-rt values for the total molecule andortho-substituent R2, together with two all-or-nothing -terms to handle two minor specific effects. 

The sequential and often cooperative disassembly of double-helical structure, occurring whenever the sample temperature exceeds the so-called melting temperature (Tm) for a given segment of DNA. Because of the low concentrations of intermediate states lying between helix and coil structures, the helix-coil transition can be approximated as a two-state, all-or-nothing process. See DNA Unwinding Kinetic Model for Small DNA... 

Beside this there are some major differences with the neurotransmission in the autonomous nervous system The contractile activity of the skeletal muscle is almost completely dependent on the innervation. There is no basal tone and a loss of the innervation is identical to a total loss in function of the particular skeletal muscle. In contrast to the target organs of the parasympathetic nervous system the skeletal muscle cells only have acetylcholine receptors at the site of the so-called end-plate, the connection between neuron and muscle cell with the rest of the cell surface being insensitive to the transmitter. The release of acetylcholine results in a postjunctional depolarization which is either above the threshold to induce an action potential and a contraction or below the threshold with no contractile response at all. In contrast to the graduated reactions of the parasympathetic target organs, this is an all or nothing transmission. 

---