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Objective To investigate the knowledge and attitude towards palliative care among emergency care nurses, and analyze its influencing factors. Methods A questionnaires were conducted among 415 emergency care nurses from tertiary hospitals in Hubei province by using a general information questionnaire, the Hospice Knowledge Quiz for Nurses and the Frommelt Attitudes Toward Care of the Dying Scale Form B (FATCOD-B). Multiple linear step regression was used to analyze the influencing factors. Results The total scores of knowledge and attitude towards palliative care were (12. 44±3. 83) and (97. 35±9. 07), respectively. Sex, professional titles, whether had interactions with a dying patient or not and palliative care training were main factors influencing nurses’ palliative care knowledge. Education level, professional titles and palliative care training were main factors influencing attitude towards palliative care. Conclusion Emergency care nurses had a middle level of knowledge and attitude towards palliative care. More palliative care training including theory and practice should be developed, and nurses with low education level and professional title need to be trained more. (目的 了解急诊科护士安宁疗护知识和态度的现状, 并分析其影响因素。方法 使用一般资料问卷、安宁疗护知识问卷和中文版佛罗梅尔特临终关怀态度量表(FATCOD-B)对便利抽取的湖北省三级医院415名急诊科护士进行调查。使用多元线性逐步回归分析其影响因素。结果 急诊科护士的安宁疗护知识得分为(12. 44±3. 83)分, 安宁疗护态度得分为(97. 35±9. 07)分。性别、职称、是否接触过临终患者及安宁疗护培训是安宁疗护知识的影响因素; 学历、职称及安宁疗护培训是安宁疗护态度的影响因素。结论 急诊科护士安宁疗护知识和态度处于中等水平, 科室应该开展安宁疗护的理论培训和专科实践, 并重点加强对低学历和低职称护士的培训。)

Copyright of Journal of Isotopes is the property of Journal of Isotopes Editorial Office 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 CT Theory & Applications is the property of Editorial Department of CT Theory & Applications 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.)

In order to study the compaction characteristics and particles size distribution of saturated broken rock of continuous gradation，an experimental study was conducted on saturated broken rock which satisfies the Talbol distribution by using self-made equipment and MTS816.03 rock mechanics test system. The influences of n on the secant modulus，the tangent modulus，the porosity，the bulking factor and the compactness were analyzed. The variation laws of distribution coefficient r with Talbol index and axial stress were investigated. The stress-strain relationship of broken rocks was established，which can reflect the variation of particle size distribution. The results show that the secant modulus，the tangent modulus，the porosity，the bulking factor and the compactness of rock samples were negatively related with the Talbol index n in the bearing process of broken rock samples. The distribution coefficient r decreased when axial stress increased. And the distribution coefficient r tended to increase with n，when the axial stress was less than 50% of the uniaxial compressive strength.When the axial stress was more than 50% of the uniaxial compressive strength，the relationship between distribution coefficient r of broken rock samples and n fluctuated. The distribution coefficient r of different n tended to be uniform with the axial stress exceeded 90% of the uniaxial compressive strength. [ABSTRACT FROM AUTHOR]

Lateral confined compression tests for saturated crushed limestone were conducted to study the evolution of the microstructure in crushed rock masses.Micro-CT system was used to observe the microstructure of the samples. Based on the average particle size，the particle crushing state of the saturated crushed limestone under compaction was obtained quantitatively，and the relationship between porosity and average particle size was analyzed. Using image technology，the evolution of the particle shapes was studied quantitatively. The experimental results indicate that during compaction，particle crushing is pervasive，the pores in samples are compressed and filled with fine particles，and the connectivity between pores become worse. The initial gradation influences the porosity of samples. Under same axial stress，the porosity increases with an increase in Talbot exponent. The relationship between the porosity and the average particle size is linear，and the porosity can be used to describe the crushing state of the samples quantitatively. With the increase of axial stress，the circularity of the particles decreases monotonously，the shapes of the particles are more regular，the relationship between circularity and axial stress can be fitted by an exponential function. The study is helpful for a better understanding of deformation mechanism of crushed rock mass. [ABSTRACT FROM AUTHOR]