Alphabetical Ordering
Alphabetical Ordering - Related Videos
02:05
DNA as a Genetic Template
0 Views •
2020
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
02:54
Coordination Compounds and Nomenclature
0 Views •
2020
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
12:39
Computational Fluid Dynamics Simulations of Blood Flow in a Cerebral Aneurysm
0 Views •
2023
Source: Joseph C. Muskat, Vitaliy L. Rayz, and Craig J. Goergen, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana The objective of this video is to describe recent advancements of computational fluid dynamic (CFD) simulations based on patient- or animal-specific vasculature. Here, subject-based vessel segmentations were created, and, using a combination of open-source and commercial tools, a high-resolution numerical solution was determined within a flow model.
02:52
Chemical Formulas
0 Views •
2020
A chemical formula presents information about the proportions of atoms constituting a particular chemical compound or molecule, mainly using symbols of elements and numbers. At times other symbols, such as dashes, parentheses, brackets, commas, plus, and minus signs, are also used. A chemical formula can be one of three types – molecular, empirical, and structural. Molecular Formula The molecular formula represents a molecule or a chemical compound using chemical symbols (to indicate the...
11:24
Lentiviral Mediated Gene Silencing in Human Pseudoislet Prepared in Low Attachment Plates
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Cited by 9 •
2019
A protocol to create gene modified human pseudoislets from dispersed human islet cells that are transduced by lentivirus carrying short hairpin RNA (shRNA) is presented. This protocol utilizes readily available enzyme and culture vessels, can be performed easily, and produces genetically modified human pseudoislets suitable for functional and morphological studies.
FAQs
The entries are compared from left to right until the first differing character appears. The character that comes earlier under the chosen alphabetic rules determines which item precedes the other. If one entry continues after matching the complete shorter entry, the catalog must apply one consistent rule for that situation, preventing similar compound or reagent names from being placed unpredictably.
These features can change how names and labels are compared, even when the chemical entries are otherwise similar. A catalog should therefore establish whether capitalization, spaces, symbols, or scientific prefixes affect the comparison and apply that decision throughout. Consistent treatment reduces ambiguity, so users can anticipate where a compound, reagent, or chemistry term will appear.
Alphabetical ordering uses the written form of an entry rather than its chemical characteristics. It does not arrange substances by composition, behavior, or another scientific property described in the source material. Its value is navigational: users can locate names and labels efficiently, while a separate scientific classification can provide information about what those substances are or how they relate.
First, establish the comparison rules for letters, capitalization, spaces, symbols, and any relevant scientific prefixes. Next, compare each entry from its first character onward, resolving the order at the first difference. Apply the same rules to every item, then review closely related names for consistency. This workflow supports reliable retrieval in glossaries and inventories.
Chemistry resources can apply it to chemical glossaries, reagent inventories, compound indexes, and reference lists. In each setting, the method gives users a predictable route to names, labels, or citations without requiring them to search through an unstructured collection. This is particularly useful when many substances or technical concepts must be cataloged and compared.
A stable ordering scheme reduces ambiguity when different users consult the same collection of chemical names or concepts. In laboratories, it can make reagent information easier to retrieve; in education, it can organize glossaries and references for comparison. At the database level, consistent rules also create a more dependable structure for storing and locating cataloged chemistry information.