Codes, frequently used

Translation of the Foreign Gene. The translation of a mRNA into a protein is governed by the presence of appropriate initiation sequences that specify binding of the mRNA to the ribosome. In addition, not all the codons of the genetic code are used equally frequently by all organisms. 

This discussion of pressure vessels is intended as an overview of the codes most frequently used for the design and construction of pressure vessels. Cnemical engineers who design or specify pressure vessels should determine the federal and local laws relevant to the problem and then refer to the most recent issue of the pertinent code or standard before proceeding. Laws, codes, and standards are frequently changed. 

A relatively recent addition to the code is Part ULW, which contains requirements for vessels fabricated by layered construction. This type of construction is most frequently used for high pressures, usually in excess of 13,800 kPa (2000 Ibf/in ). 

Pigment preparations are frequently used in the PVC cable industry for coloration. The pigment content is often selected in such a way that one part by weight of the preparation is used to color 100 parts by weight of the polymer compound. The shades and color codes for cables and insulated lines are specified in standards in various European countries [35],... 

Although the most frequently used nomenclature for AHLs was initially based on a 3-5 letter codes based on names e.g. BHL for N-butyryl-L-homo-serine lactone, OHHL for AT-(3-oxohexanoyl)-L-homoserine lactone or OdDHL for N-(3-oxododecanoyl)-L-homoserine lactone, the rapid expansion in the range of AHL molecules discovered has led to changes in this nomenclature. Currently, the accepted abbreviations are a structure-based short-hand notations e.g. C4-HSL for N-butyryl-L-homoserine lactone, 3-oxo-C6-HSL (or 30,C6-HSL) for AT-(3-oxohexanoyl)-L-homoserine lactone or 3-hydroxy-C12-HSL (or 30H,C12-HSL) for N-(3-hydroxydodecanoyl)-L-homoserine lactone. 

The above analysis is just of theoretical interest and real implementation codes including the ones listed in Section V perform much faster in practice. These codes frequently ignore conservative choices for the above parameters, taking ambitious values, and compute the solution in a much shorter time. Also, the use of efficient numerical linear algebra libraries and the exploration of several sparsity properties of C,Ai,A2, , A [21] have tremendously reduced the computational time of these codes every few months. 

Baculovirus expression is the most frequently used method for expression in insect cells and employs Autographa californica nuclear polyhedrosis virus (AcNPV), a double stranded (ds) DNA virus that infects arthropods. The baculovirus expression system utilizes features of the viral life cycle to introduce recombinant DNA coding the gene of interest into insect cells (Miller, 1988 O Reilly et al, 1992). 

This discussion of pressure vessels is intended as an overview of the codes most frequently used for the design and construction of pressure... 

More frequently, the two codes are used in linear form ... 

Analogues have been collected from the list of the most frequently used drugs (IMS) which have been classified and completed with the help of ATC system, but in the case of structural analogues, i.e. analogues with biological activities that are different from the lead, a remark (R) indicates that the ATC code is different. For a given class, the analogues are listed in the order of their discovery dates. 

Computer models, also known as math models or codes , are now frequently used in engineering, science, and many other disciplines. To run the computer model software, the experimenter provides quantitative values for various input (explanatory) variables. The code then computes values for one or more output (response) variables. For instance, in a model of Arctic sea ice (Chapman et al., 1994), the input variables included rate of snowfall and ice albedo and the code produced values of ice mass, and so on. In circuit-design models (see, for example, Aslett et al., 1998), the input variables are transistor widths and other engineering parameters, and the output variables are measures of circuit performance such as time delays. 

Chemical substances, their syntheses, the determination of their properties, and their applications are the core of chemistry and the main occupation of chemists. In their communications, chemists represent chemical substances by structural diagrams, names, molecular formulas, codes, and identification numbers. One of the most frequently used identification numbers is the CAS Registry Number. Today, CAS Registry Numbers are often used to identify chemical substances in handbooks, indexes, databases, and inventories, and even on many commercial product labels. 

Despite this last observation, for this type of simulation and modelling research, two main means of evolution remain the first consists in enlarging the library with new and newly coded models for unit operations or apparatuses (such as the unit processes mentioned above multiphase reactors, membrane processes, etc.) the second is specified by the sophistication of the models developed for the apparatus that characterizes the unit operations. With respect to this second means, we can develop a hierarchy dividing into three levels. The first level corresponds to connectionist models of equilibrium (frequently used in the past). The second level involves the models of transport phenomena with heat and mass transfer kinetics given by approximate solutions. And finally, in the third level, the real transport phenomena the flow, heat and mass transport are correctly described. In... 

The more expensive, corrosion-resistant alloys are frequently used as a cladding on carbon steel. If a thick plate is needed for structural strength, as for pressure vessels, the use of clad materials can substantially reduce the cost. The design requirements for pressure vessels with cladding or applied internal linings are given in ASME BPV Code Sec. VIII Div. I Part UCL. 

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