Results 171 to 180 of about 60,988 (314)

Comparison of vibrations of a combination of solid-rocket launch vehicle and payload during a ground firing and launching [PDF]

open access: yes
The results of a study into the environmental vibrations of a payload mounted on the Nike rocket launch vehicle were presented. Data were obtained during the flight acceptance test of the payload, the firing of the total vehicle in a special test stand ...
Pierce, H. B., Schoenster, J. A.
core   +1 more source

Lithic analysis in African archaeology: Advances and key themes

open access: yesArchaeometry, EarlyView.
Abstract Stone artifacts (lithics) preserve for extended periods; thus they are key evidence for probing the evolution of human technological behaviors. Africa boasts the oldest record of stone artifacts, spanning 3.3 Ma, rare instances of ethnographic stone tool‐making, and stone tool archives from diverse ecological settings, making it an anchor for ...
Deborah I. Olszewski   +2 more
wiley   +1 more source

Complex Burn Region Module (CBRM) update [PDF]

open access: yes
Presented here is a Complex Burn Region Module (CBRM) update for the Solid Rocket Internal Ballistics Module (SRIBM) Program for the Advanced Solid Rocket Motor (ASRM) design/performance assessments.
Adams, Carl L., Jenkins, Billy
core   +1 more source

What can lithics tell us about food production during the transition to farming? Exploring harvesting practices and cultural changes during the neolithic in Southwest Asia: a view from Qminas (north‐western Syria)

open access: yesArchaeometry, EarlyView.
Abstract This study examines the continuity and change in harvesting practices between the Late Pre‐Pottery Neolithic B (LPPNB) and the Early Pottery Neolithic at Qminas, north‐western Levant, through a traceological analysis of flint sickles. By combining qualitative traceological analysis with quantitative functional approaches, we demonstrate that ...
Fiona Pichon   +3 more
wiley   +1 more source

Thermal Insulation Based on NBR-Elastomerized Phenolic Resin Reinforced with Carbon Fibers: Mechanical and Ablation Properties. [PDF]

open access: yesMaterials (Basel)
Gržetić J   +6 more
europepmc   +1 more source

Intensifying translocal precarity: The impact of COVID‐19 on smallholder farmers' commodity production and social reproduction in Cambodia

open access: yesArea, EarlyView.
Short Abstract Our paper argues that COVID‐19 deepened the translocal precarity of smallholder households, who already had to struggle with volatile commodity production and uncertain labour migration. Through the lens of translocal precarity, it reveals how the pandemic played out within a broader conjuncture of agrarian transformation, defined by ...
Rosa Yi, W. Nathan Green
wiley   +1 more source

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