Results 61 to 70 of about 9,331 (178)

NASA patent abstracts bibliography: A continuing bibliography. Section 1: Abstracts (supplement 29) [PDF]

open access: yes
s are provided for 115 patents and patent applications entered into the NASA scientific and technical information system during the period January 1986 through June 1986.

core   +1 more source

A new actinopterygian fish species from the Late Permian Beaufort Group, South Africa [PDF]

open access: yes, 2001
A new genus and species of actinopterygian (ray-finned) fish, Bethesdaichthys kitchingi, is described from the Tatarian, Late Permian, Lower Beaufort Group of South Africa. Bethesdaichthys is presently known from three localities, two in the New Bethesda
Bender, Patrick
core  

Load transfer model for vertically loaded non-circular piles [PDF]

open access: yes
The load-transfer (LT) method, involving a series of ‘t-z’ springs to represent pile shaft-soil interaction and a ‘q-z’ spring to represent pile tip-soil interaction, is widely used to model the load–displacement behaviour of vertically loaded piles ...

core   +2 more sources

The art of examining and interpreting histologic preparations: a laboratory manual and study guide for histology [PDF]

open access: yes, 2004
2nd ed.Rev. ed. of: Art of examining and interpreting histologic preparations : a student handbook / William J. Krause. Parthenon Pub. Group, c2001.The examination and interpretation of tissue sections seen under the light microscope in a laboratory ...
Krause, William J., II, 1942-
core  

NASA patent abstracts bibliography: A continuing bibliography. Section 1: Abstracts (supplement 40) [PDF]

open access: yes
s are provided for 181 patents and patent applications entered into the NASA scientific and technical information system during the period July 1991 through December 1991.

core   +1 more source

Performance Comparisons and Down Selection of Small Motors for Two-Blade Heliogyro Solar Sail 6U CubeSat [PDF]

open access: yes
This report compiles a review of 130 commercial small scale motors (piezoelectric and electric motors) and almost 20 researched-type small scale piezoelectricmotors for potential use in a 2 blades Heliogyro Solar Sail 6U CubeSat.
Bryant, Robert G.   +1 more
core   +1 more source

NASA technology utilization survey on composite materials [PDF]

open access: yes
NASA and NASA-funded contractor contributions to the field of composite materials are surveyed. Existing and potential non-aerospace applications of the newer composite materials are emphasized.
Delzell, M. T.   +6 more
core   +1 more source

Tumor Necrosis Factors and Chemokines in Hair Development [PDF]

open access: yes, 2012
Several embryonic organs, such as the hair follicle, develop as appendages of the ectoderm, the outermost layer of the embryo. These organs develop as a result of reciprocal tissue interactions between the surface epithelium and the underlying mesenchyme.
Lefebvre, Sylvie
core  

Brayton-cycle radioisotope heat source design study. Phase I - /Conceptual design/ report [PDF]

open access: yes
Conceptual designs for radioisotope heat source systems to provide 25 kW thermal power to Brayton cycle power conversion system for space ...
Beaver, R. J.   +8 more
core   +2 more sources

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