The National Technical Information Service (NTIS) database is the major resource forlocating U.S. Government sponsored research reports and studies in the physical sciences, technology, engineering, biological sciences, medicine and health sciences, agriculture and social sciences. Various classification systems enhance subject retrieval. Material can also be searched by corporate source, patent number and CAS registry number. NTIS can be of particular value for scientific and technical professionals and students, or for anyone involved in government research and contracting.

Producer

U.S. Department of Commerce

National Technical Information Service (NTIS)

5285 Port Royal Road

Springfield, VA 22161

Online Help Desk: 703-487-4640

Report Ordering Information: 703-487-4650

Years of Coverage

1970 to present

Default fields for unqualified searches

TI, AB, MJ, MN

The following alphabetical list provides the two-letter label, the relevant alias, and an example for each National Technical Information Service database field.

                =====        ============
                Label        Name/Example
                =====        ============
                ab           Abstract
                example:     supersonic combustion.ab.

                an           Accession Number
                example:     tib-b89-82561-xab.an.

                au           Author
                example 1:   strueder l.au.
                example 2:   strueder $.au.

                av           Availabilty
                display only

                cc           Category Codes
                example:     89d.cc. and 72b.cc.

                cn           Contract and/or Grant Numbers
                example:     nasi-18605.cn.

                de           Descriptors (MJ, MN)
                example 1:   algorithms.de.
                example 2:   reacting flow.de.

                id           Identifiers
                example:     ntisnasa.id.

                in           Institution and Institution Code
                example 1:   computer applications.in.
                example 2:   ij535353.in.

                jn           Journal Announcement
                example:     u9006.jn.

                mj           Major Descriptors
                example:     problem solving.mj.

                mn           Minor Descriptors
                example:     energy resolution.mn.

                nt           Notes
                display only

                pn           Project and/or Task Numbers
                display only

                pr           Price
                display only

                rn           Report Number
                example:     mpi-pae-exp-el-208.rn.

                sa           Sponsoring Agency
                example 1:   nasa-cr-194662.sa.
                example 2:   nasa.sa.

                ta           Title Annotation
                display only

                ti           Title
                example:     eigenvalue problem.ti.

                up           Update Code
                example:     9406.up.

                yr           Publication Year
                example 1:   nov 1993.yr.
                example 2:   1993.yr.

The following are the Ovid limits for the National Technical Information Services database.

                Limit Name             Example

                Publication Year
                Command Syntax:        ..l/2 yr=1993

                Update Code
                Command Syntax:        ..l/1 up=9406


           Change to National Technical Information Service
           from another database
           ------------------------------------------------
                Command Syntax:        ..c/ntis
                Sentence Syntax:       use ntis