Results 221 to 230 of about 15,554 (246)

Numerical simulation study on the evolution of the temperature field and frozen wall in fractured rock mass

open access: yesDeep Underground Science and Engineering, EarlyView.
The evolution of the temperature field and frozen wall under different fracture conditions was examined by an artificial ground freezing‐based thermal‐hydraulic coupled model. It was observed that fracture inclination affects the interaction extent of freezing pipes and fracture, while phase transition extent is the dominant factor for heat transfer in
Chenyi Zhang   +9 more
wiley   +1 more source

Evaluation of the Siemens Healthineers Atellica TSTII testosterone assay in the CDC HoSt-TT program.

open access: yesJ Clin Endocrinol Metab
Li J   +8 more
europepmc   +1 more source

Horizontal Dilution of Precision Analysis for Loran C/ Beidou Integrated Navigation System

open access: yes2010 Third International Symposium on Electronic Commerce and Security, 2010
The positioning precision of system plays a very important role in ship navigation. As a navigation system, Loran C cannot meet the orientation precision, even not be used in some areas. Based on the principle of hyperbola location, in this paper we propose Loran C/Beidou integrated navigation system.
Tong Haipeng, Xu Haigang
exaly   +4 more sources

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