Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Connected finding

Once all your processes are connected, find any streams that are not yet accounted for. In this case, we have not drawn the feed stream into the evaporator, the waste stream from the evaporator, or the exit streams from the turbine and heat exchanger. [Pg.30]

We selected the three most important high-level tasks in social network analysis evaluating connectivity, finding central actors and identifying communities. We evaluated performance on one or two medium-level tasks within each of these high-level tasks. We also chose tasks we could easily explain to novice users, and for which answers could be objectively validated. [Pg.293]

Later findings have modified the rule, especially when the carbon atoms concerned are connected with carbonyl- or carboxyl-groups, but it still holds good for monohydric unsaturated alcohols. [Pg.162]

The NDT and TD methods and means that solve the proplems connected with the necessaty to find the arms, explosives, radioactive and nuclide sources as well as to detect false documents and securities are rapidly developing. [Pg.911]

The development and improvement of scientific-technical level of NDT and TD means for safety issues is connected with the necessity to find additional investments that must be taken into account at the stage of new technogenic objects designing, when solving new arising problems in social, economic, ecological and medical safety. It is not accidental, that the expenses for safe nuclear power plants operation cover 50% of total sum for construction work capital investments. That is why the investments for NDT and TD have to cover 10% of total amount for development and manufacturing of any product. [Pg.915]

At this point the reader may feel that we have done little in the way of explaining molecular synnnetry. All we have done is to state basic results, nonnally treated in introductory courses on quantum mechanics, connected with the fact that it is possible to find a complete set of simultaneous eigenfiinctions for two or more commuting operators. However, as we shall see in section Al.4.3.2. the fact that the molecular Hamiltonian //coimmites with and F is intimately coimected to the fact that //commutes with (or, equivalently, is invariant to) any rotation of the molecule about a space-fixed axis passing tlirough the centre of mass of the molecule. As stated above, an operation that leaves the Hamiltonian invariant is a symmetry operation of the Hamiltonian. The infinite set of all possible rotations of the... [Pg.140]

The probability of finding a nucleic acid unit in the certain conformation according to our results is never equal to the unit. It agrees with the idea that NAs are not static but fluctuating, breathing , objects [23]. For example, in RNA molecule with 10 base pairs at the room temperature about 510 base pairs do not take part in the stacking and are not connected with H -bonds [2]. [Pg.122]

Do we expect this model to be accurate for a dynamics dictated by Tsallis statistics A jump diffusion process that randomly samples the equilibrium canonical Tsallis distribution has been shown to lead to anomalous diffusion and Levy flights in the 5/3 < q < 3 regime. [3] Due to the delocalized nature of the equilibrium distributions, we might find that the microstates of our master equation are not well defined. Even at low temperatures, it may be difficult to identify distinct microstates of the system. The same delocalization can lead to large transition probabilities for states that are not adjacent ill configuration space. This would be a violation of the assumptions of the transition state theory - that once the system crosses the transition state from the reactant microstate it will be deactivated and equilibrated in the product state. Concerted transitions between spatially far-separated states may be common. This would lead to a highly connected master equation where each state is connected to a significant fraction of all other microstates of the system. [9, 10]... [Pg.211]

The application in [24] is to celestial mechanics, in which the reduced problem for consists of the Keplerian motion of planets around the sun and in which the impulses account for interplanetary interactions. Application to MD is explored in [14]. It is not easy to find a reduced problem that can be integrated analytically however. The choice /f = 0 is always possible and this yields the simple but effective leapfrog/Stormer/Verlet method, whose use according to [22] dates back to at least 1793 [5]. This connection should allay fears concerning the quality of an approximation using Dirac delta functions. [Pg.321]

Euler s task was to find such a way. He first reduced the problem to its essentials by substituting a dot for each piece of land and a line for each bridge, then connecting the corresponding dots. This object was called a graph (sketched in Figure 2-12, right). [Pg.32]

After return to the Commander window, the reaction retrieval may be executed separately 629 Dicls-Aldcr reactions between aliphatic dienes and cyclic dicno-pliiles are found. This partial result can be narrowed down by restricting tlie reaction conditions by means of the fact editor, The search field codes for the yield and the temperature can be found to be RX.NYD and RX.T, respectively, either by browsing the database structure or by applying the Find option, as described in the first example. To ensure that the retrieved reaction conditions belong to the same experiment, both search terms must be connected by means of the PROXIMITY operator. Before the retrieval is started, the option "Refine results in... [Pg.255]

The generation of loops is necessary because disconnected regions are often separated by a section where a few amino acids have been inserted or omitted. These are often extra loops that can be determined by several methods. One method is to perform a database search to find a similar loop and then use its geometric structure. Often, other conformation search methods are used. Manual structure building may be necessary in order to find a conformation that connects the segments. Visual inspection of the result is recommended in any case. [Pg.188]

All of the material in this text and most of chemistry generally can be understood on the basis of what physicists call the electromagnetic force Its major principle is that opposite charges attract and like charges repel As you learn organic chemistry a good way to start to connect structure to properties such as chemical reactivity is to find the positive part of one molecule and the neg ative part of another Most of the time these will be the reactive sites... [Pg.16]

The heats of formation of most organic com pounds are derived from heats of reaction by arith metic manipulations similar to that shown Chemists find a table of AH values to be convenient because it replaces many separate tables of AH° values for indi vidual reaction types and permits AH° to be calcu lated for any reaction real or imaginary for which the heats of formation of reactants and products are available It is more appropriate for our purposes however to connect thermochemical data to chemi cal processes as directly as possible and therefore we will cite heats of particular reactions such as heats of combustion and heats of hydrogenation rather than heats of formation... [Pg.86]

To carry out the reassembly exercise, connectivities between the ions must be determined. For example, does the ion Fj+ come from M+ or F/ or F2+ This process can be likened to completing a jigsaw by finding where and how the pieces fit together. [Pg.411]

In mass spectrometry, the required connectivities (links) can be obtained from observations on metastable ions. For example, finding a metastable ion for a supposed process, M+ F3+, proves the process exists. [Pg.412]

The required connections between fragment ions cannot be obtained from a normal, routine mass spectrum, which records only those ions formed in the ion source and that find their way to an ion collector. [Pg.413]

Most strategies hmit themselves to finding a local minimum point in the vicinity of the starting point for the search. Such a strategy will find the global optimum only if the problem has a single minimum point or a set of connected minimum points. A convex problem has only a global optimum. [Pg.485]


See other pages where Connected finding is mentioned: [Pg.7]    [Pg.84]    [Pg.116]    [Pg.7]    [Pg.84]    [Pg.116]    [Pg.230]    [Pg.187]    [Pg.488]    [Pg.870]    [Pg.1514]    [Pg.341]    [Pg.378]    [Pg.384]    [Pg.636]    [Pg.637]    [Pg.713]    [Pg.166]    [Pg.568]    [Pg.67]    [Pg.100]    [Pg.465]    [Pg.670]    [Pg.720]    [Pg.110]    [Pg.191]    [Pg.117]    [Pg.101]    [Pg.67]    [Pg.242]    [Pg.296]    [Pg.241]    [Pg.97]    [Pg.246]    [Pg.193]    [Pg.2536]   
See also in sourсe #XX -- [ Pg.503 , Pg.512 ]




SEARCH



Find connected components

Finding connected components

© 2024 chempedia.info