| library collection development | Development of a library collection, including the determination and coordination of selection policy, assessment of needs of users and potential users, collection use studies, collection evaluation, identification of collection needs, selection of materials, planning for resource sharing, collection maintenance and weeding, and budgeting. (12 Dec 1998) |
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| library materials | Print and non-print materials collected, processed, and stored by libraries. They comprise books, periodicals, pamphlets, reports, microforms, maps, manuscripts, motion pictures, and all other forms of audiovisual records. (harrod, the librarians' glossary, 4th ed, p497) (12 Dec 1998) |
| library schools | Educational institutions for individuals specializing in the field of library science or information. (12 Dec 1998) |
| library science | Study of the principles and practices of library administration and services. (12 Dec 1998) |
| library services | Services offered to the library user. They include reference and circulation. (12 Dec 1998) |
| library surveys | Collection and analysis of data pertaining to operations of a particular library, library system, or group of independent libraries, with recommendations for improvement and/or ordered plans for further development. (12 Dec 1998) |
| library technical services | Acquisition, organization, and preparation of library materials for use, including selection, weeding, cataloging, classification, and preservation. (12 Dec 1998) |
| library, arrayed | In genetics, arrayed libraries of DNA clones are used for many purposes, including screening for a specific gene or genomic region of interest as well as for physical mapping. An arrayed library consists of (in technical terms) individual primary recombinant clones (which are hosted in phage, cosmid, yac, or another vector) that have been placed in two-dimensional arrays in microtiter dishes (plastic dishes with an orderly array of tiny wells). Each primary clone can be identified by the identity of the plate and the clone location (row and column) on that plate. The information gathered on individual clones from various genetic linkage and physical map analyses is then entered into a relational database and used to construct physical and genetic linkage maps. (12 Dec 1998) |
| library, genomic | A collection of DNA clones made from a set of randomly generated overlapping DNA fragments representing the entire genome of an organism. As a molecular genetic sequel to john steinbeck's of mice and men , today you can have a mouse genomic library or a human genomic library. (12 Dec 1998) |
| libration | 1. The act or state of librating. 2. <astronomy> A real or apparent libratory motion, like that of a balance before coming to rest. Libration of the moon, any one of those small periodical changes in the position of the moon's surface relatively to the earth, in consequence of which narrow portions at opposite limbs become visible or invisible alternately. It receives different names according to the manner in which it takes place; as: (a) Libration in longitude, that which, depending on the place of the moon in its elliptic orbit, causes small portions near the eastern and western borders alternately to appear and disappear each month. (b) Libration in latitude, that which depends on the varying position of the moon's axis in respect to the spectator, causing the alternate appearance and disappearance of either pole. (c) Diurnal or parallactic libration, that which brings into view on the upper limb, at rising and setting, some parts not in the average visible hemisphere. Origin: L. Libratio: cf. F. Libration. Source: Websters Dictionary (01 Mar 1998) |
| libriform | <botany> Having the form of liber, or resembling liber. Libriform cells, peculiar wood cells which are very slender and relatively thick-walled, and occasionally are furnished with bordered pits. Origin: Liber. Source: Websters Dictionary (01 Mar 1998) |
| libya | A country in northern africa. Its capital is tripoli. The general geographical area has been known since ancient times to the phoenicians, greeks, and romans. It has been in the hands of the italians, the british, the germans, and the french. Libya became independent in 1951. Although the name is very ancient and appeared in egyptian hieroglyphics as early as 2000 b.c., the meaning is not known. (12 Dec 1998) |