Results 81 to 90 of about 594,060 (358)
Seals of Bishop Henryk of Wierzbna (1301–1319)
Wrocławski Przegląd Teologiczny, 2020 Did Bishop Henryk of Wierzbna use his seals only for legal and political purposes? Establishing this is the purpose of the article. For this purpose, the extant seals were analysed for the sealed image and legend. When analysing Bishop Henryk’s seals, we
Norbert Jerzak
doaj +1 more source
Annular Seals of High Energy Centrifugal Pumps: Presentation of Full Scale Measurement [PDF]
, 1991 Prediction of rotordynamic behavior for high energy concentration centrifugal pumps is a challenging task which still imposes considerable difficulties. While the mechanical modeling of the rotor is solved most satisfactorily by finite element techniques,
Florjancic, S. +2 more
core +1 more source
Nonelastomeric Rod Seals for Advanced Hydraulic Systems [PDF]
Advanced high temperature hydraulic system rod sealing requirements can be met by using seals made of nonelastomeric (plastic) materials in applications where elastomers do not have adequate life.
Hady, W. F., Waterman, A. W.
core +2 more sources
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Summing the strokes: energy economy in northern elephant seals during large-scale foraging migrations. [PDF]
, 2015 BackgroundThe energy requirements of free-ranging marine mammals are challenging to measure due to cryptic and far-ranging feeding habits, but are important to quantify given the potential impacts of high-level predators on ecosystems.
Adachi, T +8 more
core +1 more source
Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC
Advanced Engineering Materials, EarlyView.ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko +2 more
wiley +1 more source
Trends in pinniped interactions with commercial passenger fisheries vessels in California
California Fish and Wildlife JournalThe resurgence of pinniped populations along the West Coast of the United States, a consequence of the Marine Mammal Protection Act, has resulted in unintended ecological and socio-economic repercussions.
Zachary A. Schakner +3 more
doaj +1 more source
Légalité et intégrité de la loi : le rôle des Archives nationales
Clio@Themis, 2013 The National Archives played a key role in the history of law under the Revolution and the Empire. The institution created by the Revolution was charged with the preservation of the minutes book of the Constituent Assembly that would constitute the C ...
Isabelle Rouge-Ducos
doaj +1 more source
A two-stage ceramic tile grout sealing process using a high power diode laser Part II: Mechanical, chemical and physical properties [PDF]
, 1998 Ceramic tiles sealed using a portable 60 W-cw high power diode laser (HPDL) and a specially developed grout material having an impermeable enamel surface glaze have been tested in order to determine the mechanical, chemical and physical characteristics ...
J Lawrence, J.T Spencer, L Li, Petitbon
core +1 more source
Age and Sex Composition of Seals Killed by Polar Bears in the Eastern Beaufort Sea
PLoS ONE, 2012 Background Polar bears (Ursus maritimus) of the Beaufort Sea enter hyperphagia in spring and gain fat reserves to survive periods of low prey availability.
N. Pilfold +4 more
semanticscholar +1 more source