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Copyright of Nuclear Safety is the property of Nuclear & Radiation Safety Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Nuclear Safety is the property of Nuclear & Radiation Safety Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To explore the the incidence and clinical characteristics of hip fractures in the elderly over 50 years old in Harbin, and provide a theoretical basis for the prevention of hip fractures in the elderly . Methods The medical records of 16 16 patients with hip fractures from January 2008 to December 2019 were collected retrospectively, and the basic conditions of the patients were counted . Results In the past 12 years, the number of elderly cases of hip fracture increased year by year, and the overall male-to-female ratio of hip fracture wasl: 1. 45. The average age of the patients was ( 70. 27 ± 11. 41 ) years, and the average age of females was significantly higher than that of males( P< 0. 00 1) . The number of femoral neck fractures was 1. 44 times higher than that of intertrochanteric fractures. The average age of femoral neck fracture was ( 67. 03 ± 11. 41 ) years in males and ( 70. 61 ± 10. 73 ) years in females. The average age of intertrochanteric fracture was ( 68. 69 ± 11. 93) years in males and ( 74. 16 ± 10. 86) years in females. The average age of patients with femoral neck fracture increased by 0. 88 years per year in males ( P = 0. 003) and 0. 55 years in females ( P = 0. 03) . The average age of male patients with intertrocbanteric fracture decreased by 0. 91 years per year ( P

Copyright of Clean Coal Technology is the property of Clean Coal Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A kind of high temperature coal tar was selected as an experimental raw material.The thermal reaction at hydrogen atmosphere was carried out under the different contents of solid particles in an autoclave reactor.Then the coke was separated from reaction product.The solid particles and the coke were characterized and analyzed by X-ray diffraction,X-ray photoelectron spectroscopy,FT-IR,UV-VIS and scanning electron microscope.Results showed that a higher quantity of asphaltenes was obtained after a thermal reaction with an appropriate amount of solid particles,while the amount of secondary toluene-insoluble decreased significantly.The surface matter of the solid particles was mainly organic compounds,containing about 7% polar oxygen groups and 1.4% polar sulfur and nitrogen groups.Due to the strong adsorption ability of solid particles to the asphaltenes,the asphaltenes in the coal tar exhibited a high dispersibility and was uneasy to be condensed to coke.Besides,the particle size of suspended coke was relatively small,existing in the reaction system in a high dispersion,with comparatively little depositional coke at the bottom of autoclave. [ABSTRACT FROM AUTHOR]