Database Directory N through S

Note on database descriptions:

The descriptions below were, for the most part, supplied by the database providers and have undergone minimal editing. The TTUHSC Library of the Health Sciences guarantees neither the accuracy of these descriptions nor of the information found in the databases themselves. Inclusion of a database on this list does not imply endorsement of its contents by the Library.

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NACCHO model practice database

A way to search for past Model Practice Award Winners.

National Academies Press (NAP)

The source of all published reports from the National Academy of Sciences, the National Academy of Engineering, the Institute of Medicine, and the National Research Council, all thanks to a charter granted by the US Congress.

National Center for Health Statistics (NCHS)

Offers users access to vast statistical data in a variety of formats from the nation's principal health statistics agency.

National Diabetes Education Program (NDEP)

A federally run program with private and public partners with the aim of improving the lives of people living with diabetes, encouraging early diagnosis, and preventing or delaying the onset of diabetes.

Disponible en Español

National Diabetes Information Clearinghouse (NDIC)

Since 1978, the NDIC has developed and distributed information about diabetes to patients, families, consumers, and health care professionals.

Disponible en Español

National Digestive Diseases Information Clearinghouse (NDDIC)

Since 1980, the NDDIC has developed and distributed information about digestive diseases to patients, families, consumers, and health care professionals.

Disponible en Español

National Endocrine and Metabolic Diseases Information Service

Learn about Endocrine and Metabolic Diseases through online resources and supporting informational material.

Disponible en Español

National Guideline Clearinghouse (NGC)

The Agency for Healthcare Research and Quality (AHRQ) has developed this thorough database of evidence base clinical practice guidelines and relevant supporting documents.

National Healthcare Quality and Disparities Report

Works with federal organizations and other partners to improve health care safety, accessibility, equality, affordability, and more by providing access to high quality evidence and research.

Disponible en Español

National Hematologic Diseases Information Service

Learn about hematologic diseases through online resources and supporting informational material.

Disponible en Español

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Conducts research on serious diseases effecting the public health as well as supporting outside research efforts. Covers internal medicine topics as well as many other science disciplines.

Disponible en Español

National Institutes of Health (NIH)

The world's largest agency of biomedical research.

Disponible en Español

National Institutes of Health (NIH) RePORTER (Research Portfolio Online Reporting Tools Expenditures and Results)

Allows users to find NIH funded research, publications, and patents.

National Kidney and Urologic Diseases Information Clearinghouse (NKUDIC)

Learn about kidney and urologic diseases through online resources and supporting informational material.

Disponible en Español

National Kidney Disease Education Program (NKDEP)

An organization aimed at reducing the rate and causes of kidney disease, along with raising awareness about preventative measures, testing, and the availability of treatment.

Disponible en Español

National Library of Medicine (NLM)

The world's largest biomedical library providing access to a vast collection. Works with a network of 6,500 medical library members across the country.

Natural and Alternative Treatments 

Offers details for conventional and natural treatment options for nearly 200 conditions, more than 300 herbs and supplements from over 90 drug categories.

Natural Hazards Center

An in depth resource on all hazard related knowledge. The center supports and conducts research, provides educational material, and more. Also provides information on disaster preparedness, response, mitigation, and recovery.

Natural Medicines [formerly Natural Standard]

An international collaboration of researchers bringing together data on alternative and complementary therapies created with evidence based, consensus based, and peer reviewed information.

Nature News

An international team of science journalists covering breaking news, features and analysis, blogs, multimedia specials, and much more.

Nature Precedings

A gathering place of unpublished manuscripts, presentations, papers, and more where researchers can share their work and provide one another feedback. Submissions from the fields of biology, medicine, chemistry, and earth science are welcome and then screened by a professional curation team for quality and relevance.


Sheds light on scientific events allowing users to stay current with the latest thinking, trends, and discoveries. Scientists can also find upcoming conferences, courses, programs, symposiums, and more.


A science career magazine, showcasing the latest science events, announcements, and jobs posted by the best colleges and corporate employers.


Allows users to learn, submit, download, develop, analyze, and research a wide range of biomedical and genomic topics.

NCBI Bookshelf

A portal for biomedical books to be accessed digitally.

NCBI Reference Sequence (RefSeq)

Offers a clear and thorough set of sequences, including genomic DNA, transcript (RNA), and protein products, for major research organisms.

NCI-3D Database

Contains over 210,000 downloadable 2D and 3D substance structures compiled by the National Cancer Institute.

NCJRS (National Criminal Justice Reference Service)

Provides policymakers and professionals worldwide one of the most extensive information resources on criminal and juvenile justice.

NEJM Resident 360

A part of the New England Journal of Medicine, Resident 360 is perfect for all residents. Find information to help prepare for rotations, career moves, and life as a resident. Requires a personal username and password. After registering, make sure to confirm the account while on campus.

View a guide for this database here.

NeoFax® - see Micromedex

Provides answers to patients' questions regarding all aspects of their care and health in a user friendly interface.

Neonatology on the Web: Classic Papers and Books

A collection of classic books and essays on neonatal and perinatal medicine sorted by author.

NetLibrary Shared Medical Collection

Also known as eBooks on EBSCOhost. Provides a vast collection of medical material for consumers, researchers, professionals, academics, and more.

Disponible en Español

Netter Reference

An interactive, downloadable, and detailed image database perfect for online use as well as anatomy instruction in many medical fields.


Produces current neuroscience and neurological protocols and methods with in depth notes to aid in laboratory testing.

New England Journal of Medicine: Medical Videos and Medical Images

Allows physicians to stay current with developments in biomedical science and clinical practices through the best research and information.

Newspaper Source 

A database providing full text for over 40 U.S. and international newspapers, and nearly 400 regional U.S. newspapers. Also includes television and radio news transcripts.

NIDDK Image Library

Holds copyright free original black and white, and full color illustrations available to the public.

Family members and friends can find trustworthy and understandable information on aging related health care.


A searchable database of publications, documents, grant reports, and more relating to occupational safety and health.

NLM classification

Explains the classification system of the National Library of Medicine, with history, guides and tutorials, and related resources.

NLM Gateway

New or returning users can easily navigate this one place for many information resources provided by the National Library of Medicine.

NOAH: New York Online Access to Health

Find full text current and relevant consumer health information in both English and Spanish.

Northwestern University Surgical Video Collection

Users can view 28 high quality surgical procedure videos for GI, breast, oncology, endocrine, and colorectal with professional commentary.

Nursing Reference Center Plus

A point of care resource perfect for all professionals in the nursing field, whether they are working from home, office, kiosk, nursing station, or a patient's bedside. Delivers current clinical knowledge in a nursing specific graphical interface.

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OCLC Electronic Books (Ebooks)

Access this one catalog for all of the electronic books from OCLC member libraries.

Disponible en Español

OCLC Electronic Collections Online (ECO)

Access a collection of scholarly journals, abstracts, and bibliographic information as well as full text for some material.

Disponible en Español


Discover approximately 1,760,000 article citations from the Cumulate Index Medicus (CIM) and the Current List of Medical Literature (CLML). This collection of international journals envelops the fields of medicine, preclinical sciences, and health professions from 1950 through 1965.

OMIM™: Online Mendelian Inheritance in Man

A free resource with a comprehensive collection of human genes and genetic phenotypes. OMIM is edited from the McKusick-Nathans Institute of Genetic Medicine and the Johns Hopkins University School of Medicine with daily updates.


One simple portal for all of the National Information Center on Health Services Research and Health Care Technology's (NICHSR) databases.

Online Books Page

Supports and provides access to free online books.

OPENi (beta)

This open resource from the National Library of Medicine enables users to search for abstracts and images, including graphs and other visual data.


This resource has been collecting data since 1997 on rare diseases with the goal of diagnosing, caring, and treating patients with rare diseases.

Disponible en Español

OT Search: The Occupational Therapy Bibliographic System

Holds an extensive database of more than 27,000 bibliographic records for occupational therapy, allied health, biomedical, and psychosocial literature. This resource is considered the national clearinghouse of occupational therapy literature for the American Occupational Therapy Association (AOTA).


A collection of occupational therapy systematic reviews and randomized controlled trials with abstracts and ratings to help the user determine the quality and validity of the information for use in clinical settings.

Disponible en Español

Outdoor Air Pollution - links to websites containing information about indoor [sic] air pollution

Discover the connection between pollution and health, especially in the young and elderly populations.

Disponible en Español


The home page for all of the Ovid databases, which includes full text books and journals, evidence base medicine resources, and bibliographic information.

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P&T QUIK® Reports

Delivers thorough research on drugs being considered for inclusion in hospital formularies, organized in a standardized format and ready to use in Pharmacy and Therapeutics committees.


The British Library Document Supply Centre has created an index of papers presented at conferences, congresses, symposiums, expositions, workshops, and meetings worldwide.

Disponible en Español

Patient Education

Users can find a wealth of information on 22 rheumatic diseases such as common medications, caregivers, general information, and more.

PEDro: Physiotherapy Evidence Database

A free database containing more than 17,000 randomized trials, systematic reviews, and clinicial practice guidelines for physiotherapy with citations, abstracts, and sometimes links to the full text. Users can search this database by ratings, helping quickly find the most useful and valid information possible.

Disponible en Español


An online clinical library specializing in pediatric emergency, critical care, and primary care, with plenty of multimedia features.

People Living With Cancer (PLWC)

Helps people living with cancer and their loved ones and care takers find oncologist approved information to help with health care decisions. This information comes from the American Society of Clinical Oncology (ASCO) with support from the Conquer Cancer Foundation.

Disponible en Español

PEPID Online Medical Software and Drug Database

Allows all health care professionals to find fast, current, and detailed information on a variety of health care topics to better serve their work needs and patient outcomes.

Pesticide Exposure - Links to websites about the acute and chronic exposure to pesticides

Learn more about pesticides and the related life threatening illnesses.

Disponible en Español

Pesticides Used to Control West Nile Virus

Learn about the pesticides used to control West Nile Virus and the health effects.

Disponible en Español


Explores pharmacogenomics, with details about dosing guidelines, drug labels, potentially clinically actionable gene-drug associations, and genotype-phenotype relationships.


The Published International Literature on Traumatic Stress (PILOTS) provides access to literature on exposure to traumatic events and the subsequent mental health effects.

Play Index

Discover more than 31,000 classic and historical plays, pageants, monologues, and more dating back to 1949.

Disponible en Español

Population Index - 1937 through 1999

The largest bibliographic resource for books, journals, papers, and other population literature, with more than 45,000 abstracts from between 1986 and 2000.

Primary Search

A full text database for elementary school research dating back to 1990 with assigned reading level indicators (Lexiles).

Disponible en Español


The British Library Document Supply Centre has created an index of proceedings from conferences, congresses, symposiums, expositions, workshops, and meetings worldwide.

Disponible en Español


Find helpful information on the reading, writing, and civics portions of the naturalization test.

ProCitizen en Espanol

ProCitizen es un curso en línea que le prepara para la educación cívica, lectura y redacción de las pruebas de naturalización de los Servicios de Inmigración y Ciudadanía de los Estados Unidos(USCIS, por sus siglas en inglés).

Disponible en Español

Professional Development Collection 

The most complete collection of specialized educational journals in the world, with over 200 reports, and almost 500 journals- more than 350 of which are peer reviewed.

Disponible en Español

Profiles in Science®

Encourages the study of 20th century biomedical scientists, with published and unpublished books, journals, diaries, letters, photographs, and much more.


Learn to speak, read, and write in 80 different languages with fun tutorials, videos, music, quizzes, and more. Also provides ESL lessons for 50 non-English languages.

Pronunciator en Espanol

Pronunciator ofrece el currículo de estudios más grande del mundo del Inglés como Segundo Idioma (ESL, por sus siglas en inglés). Esta es una manera divertida y fácil de aprender a hablar, leer y escribir cualquiera de los diferentes idiomas presentados. Incluye tutores en vivo, películas, música con liricas, análisis de pronunciación, pruebas cortas y mucho más.

Disponible en Español

ProQuest eBook Central

The most complete collection of specialized educational journals in the world, with over 200 reports, and almost 500 journals- more than 350 of which are peer reviewed.

Disponible en Español

Protein Data Bank (PDB)

The worldwide data bank for the receiving, processing, and distribution of 3D biological macromolecular structures.

Protein Research Foundation (PRF)

Gathers knowledge about amino acids, peptides, proteins, and more. Must subscribe for full access.

Protein Sequence Database Archive (31 Dec 2004) 

The most detailed and professionally annotated protein sequence database available to the public.


Catalogues the different types of studies for psychological problems as a result of acquired brain impairment (ABI).


Combines unparalleled references, books, journals, and more with modern searching and indexing tools, making it a powerful online tool for psychiatric research.

Psychology and Behavioral Sciences Collection 

The world's most comprehensive full text psychology database with nearly 400 journals covering a wide range of relevant topics.

Disponible en Español


Provides weekly updates to journal articles, books, chapters, dissertations, and more. Within this literature is content pertinent to psychologists and professionals in related fields such as education, business, neuroscience, medicine, social work, and more.

Disponible en Español


From the National Institute of Health's (NIH) Roadmap Initiative comes a way to discover the biological activities of small molecules.

Public Health Image Library (PHIL) 

Offers an organized database for the Center for Disease Control's (CDC) pictures, which are perfect for use in reference, teaching, public health messages, and more. This pictorial resource is open to everyone from public health professionals, student, scientists, and media.


A heavily used and recognized resource with a multitude of citations from biomedical literature. LinkOut allows users to access the articles from other sources.

PubMed Central

From the National Center for Biotechnology Information (NCBI) comes the leading archive of life sciences journal literature.

PubMed Clinical Queries

Allows users to find information specifically about etiology, diagnosis, prognosis, and treatment of a particular disease with downloadable formats.

PubMed Special Queries - Healthy People 2020

Discover the Healthy People 2020 initiative with pre-formulated search strategies.


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Race Relations Abstracts

Covers topics such as ethnic studies, discrimination, immigration, and other areas of study about the relationships between races.

RAND state statistics

Explore nearly 400 social science databases and nearly 200 databases about the 50 states. Within these databases are 90 mentioning Texas, and 60 specifically about the Lone Star state.

RedBook - see Micromedex

Provides answers to patients' questions regarding all aspects of their care and health in a user friendly interface.

Regional Business News

Brings together 75 newspapers, journals, and more with content from metropolitan and rural areas of the United States.

Disponible en Español

Regional Economic Data by State - Economic Data - FRB Dallas

Search for economic statistics about New Mexico, Texas, and Louisiana.

Rehabilitation Reference Center

Incorporates the best available evidence to create a clinical reference tool designed for all health care professionals needing quality rehabilitation point of care information.

Religion and Philosophy Collection 

Contains over 300 full text journals related to the study of philosophy and religion, making is an invaluable resource for students and researchers in related fields.

Disponible en Español


This professional network of more than 1.4 million scientists and researchers can upload material themselves, or search through around 45 million abstracts and more than 350,000 full texts.

RHIhub - formerly Rural Assistance Center (RAC)

An information portal for rural residents and stakeholders to find programs, funding, and research to improve the quality of health care and human services.


Find detailed information and standard names for clinical drugs. Some of the information includes: links to branded and generic versions, active ingredients, strength, dose form, and much more.

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Salud en Espanol

Find a diverse array of evidence based reports and other information in Spanish. This resource covers topics such as first aid, infant/child care and illnesses, alternative medicine, aging and medicine, and more.

Disponible en Español


The Substance Abuse and Mental Health Services Administration (SAMHSA) is seeking to reduce the effect of mental illness and substance abuse throughout the nation's communities.

Disponible en Español

Sanford Guide

The Sanford Guide provides infectious disease information designed for use at the point of care.

Science and Technology Collection

Provides full text access to journals on a diverse collection of scientific and technical subjects.

Disponible en Español

Science Watch Archive

Keeps up to date with the most significant science interviews, reports, and other data using the Thomson Scientific citation method.

Explore the fifth generation of the federal government's gateway into science information and research results, with more than 40 databases, 200 million pages of information, and thousands of links to different scientific websites.


A database of scientific, technical, and medical research with peer reviewed articles, chapters, and some open access content. Features popular articles and recent publications.

ScienceDirect Image Search

Provides a platform for peer-reviewed scholarly literature, perfect for students, researchers, scientists, and heath care professionals seeking to stay informed and work more efficiently and effectively.


A customizable and flexible search experience with access to the world's largest and most dependable collection of chemistry and related material. Requires a personal username and password, even while on the TTUHSC network.

Register for SciFinder Here


Contains information on genetics, evolution, variation, and related subjects. Dives into the impact of genetics on society, as well as the data and evidence supporting this knowledge.

SciTech Collection

Includes scholarly journals, trade and industry journals, technical reports, proceedings, government publications, and more for the natural science and technology collections.


Considered the largest source of research abstracts and citations, with quick and easy to find information.

Scribner Writers

A digital collection of Scribner Writers Series on Literature and Religion.

Disponible en Español

Serials Directory

A database containing nearly 250,000 US and international titles and newspapers, information on over 100,000 publishers from around the world, contact information, and Library of Congress and Dewey Classification for all entries.

Disponible en Español

Severe Acute Respiratory Syndrome (SARS)

Although now an archived site, this resource still provides valuable information on Severe Acute Respiratory Syndrome.

Disponible en Español

Short Story Index

Explore a vast collection of over 117,000 short stories from more than 4,200 anthologies and collections.

Disponible en Español

Small Business Reference Center

Curious about starting and running a small business? Learn about these topics and more through reference books, periodicals, and other instructional material.

Small Engine Repair Reference Center

Find repair guides for small engines, maintenance, as well as extensive disassembly and reassembly.

Disponible en Español

Special Topics - See Science Watch Archive

Keeps up to date with the most significant science interviews, reports, and other data using the Thomson Scientific citation method.

SPORTDiscus™ with Full Text

The definitive search tool for all areas of sports and sports medicine research, with over 520 full text journals dating back to 1985.

Disponible en Español


One place to find many popular laboratory protocols and handbooks, such as the Humana Series, The Proteomics Handbook, The Biomethods Handbook, and the Springer Laboratory Manual.

SpringerProtocols - Video Protocols

Researchers can find over three decades worth of trusted, tested, step by step protocols written in a recipe style by subject experts.

Stahl's Essential Psychopharmacology Online

A regularly updated resource with access to all of the neuropsychopharmacology books by Dr. Stahl.


A health care database containing core titles and evidence based information. Users will find modern searching features throughout the database.

State Health Facts

Find current and understandable health data on all 50 states in this free resource, courtesy of the Kaiser Family Foundation.

Substance Registry System (SRS) 

Search the Environmental Protection Agency's (EPA) regulations and information systems for information on a wide variety of substances.

SUMSearch 2

Users can search PubMed, DARE, and NGC all at once, with one integrated list of results. This resource was created by Dr. Robert Badgett from the UT Health Sciences Center.

Symptom Media

Contains behavioral health clinical training titles based on the Diagnostic and Statistical Manual.