Direct observation of structure in the cosmic microwave background

Direct observation of the formation of alumina phase by metallic Al solid-SiO2 solid reaction

Direct observations of basin-wide acidification of the North Pacific Ocean

Direct Observations of GPS L1 Signal-to-Noise Degradation due to Solar Radio Bursts

Direct photography of planetary nebulae in the direction of the Galactic center

Direct Physical Diagnostics of Triggered Star Formation

Direct search for global minimum in neural network

Direct solar ultraviolet irradiance over Nainital, India, in the central Himalayas for clear-sky day conditions during December 2004

Direct Temperature Measurements during Netlander Descent on Mars

Direct thermal radiative forcing of tropospheric aerosol in the Arctic measured by ground based infrared spectrometry

Direct U-Th dating of organic- and carbonate-rich lake sediments from southern Scandinavia

Direct utilization of human liquid wastes by plants in a closed ecosystem

Direct wind measurements of Saharan dust events from Terra and Aqua satellites

Direction and timing of uplift propagation in the Peruvian Andes deduced from molecular phylogenetics of highland biotaxa

Directional motion of brownian particles induced by a periodic asymmetric potential

Directional variations in thermal emission from geologic surfaces

Directly Indecomposables in Semidegenerate Varieties of Connected po-Groupoids

DIRTCam in the desert: The Silver Lake field test of the Robotic Arm Camera

Disaggregation of GOES land surface temperatures using surface emissivity

Disappearance of Pacific Water in the northwestern Fram Strait