Performance of simultaneous nitrification and denitrification in lateral flow biological aerated filter

1 Introduction a Water eutrophication becomes increasingly serious owing to untreated or illegally discharged domestic as well as industrial wastewater. Hopefully, more strict requirements for nitrogen and phosphorus removal have been set in new wastewate…     

下一代网络(NGN)与移动IPv6

由于Ipv4地址的匮乏,面临着地址瓶颈。而IPv6可有效地避免IPv4内部网地址管理不善的难题,这使得IPv6成为下一代网络业务承载网的核心技术。下一代网络(NGN)是针对当前网络所面临的各种问题,是一个建立在IP基础上的新型公共电信网络,是一个真正实现宽带窄带一体化、有源无源一体化、传输接入一体化的综合业务网络。     

载流圆形线圈的磁场

根据稳恒电流的矢势,导出载流圆形线圈的矢势和磁场的级数表达式。     

Study on one-dimensional consolidation of soil under cyclic loading and with varied compressibility

This paper presents a semi-analytical method to solve one dimensional consolidation problem by taking consideration of varied compressibility of soil under cyclic loading. In the method, soil stratum is divided equally into n layers while load and consolidation time are also divided into small parts and time intervals accordingly. The problem of one-dimensional consolidation of soil stratum under cyclic loading can then be dealt with at each time interval as one-dimensional linear consolidation of multi-layered soils under constant loading. The compression or rebounding of each soil layer can be judged by the effective stress of the layer. When the effective stress is larger than that in the last time interval, the soil layer is compressed, and when it is smaller, the soil layer rebounds. Thus, appropriate compressibility can be chosen and the consolidation of the layered system can be analyzed by the available analytical linear consolidation theory. Based on the semi-analytical method, a computer progra     

提高煤炭运输船舶周转效率的分析

从船舶装港等货时间、船舶加油、气象、船舶故障四个方面对影响船舶周转效率的因素加以分析,力求紧密联系实际,得出提高船舶周转效率的应对措施。     

How Can Visual Arts Help Doctors Develop Medical Insight?

This research project examines how using the visual arts can develop medical insight, as part of a pilot programme for two groups of medical students. It was a UK study; a collaboration between Liverpool and Glynd? University's and Tate Liverpool's learning team. Tate Liverpool is the home of the National Collection of Modern Arts in the North of England and one of the largest galleries of modern and contemporary art outside London. The project adapted Tate Liverpool's Opening Doors course in devising and piloting a single day programme that engaged students in exploring perception, communication, emotion and narrative. Opening Doors introduces participants to modern and contemporary art and empowers them to work in new ways with groups and individuals. The exercises used as part of the programme allowed us to observe what connections and interpretations were made, and to discuss with the participants what influenced student choice and decision making in relation to specific works of art. This article will focus on the use of gallery education to highlight examples of contemporary culture to develop links between art and medicine, alongside the development of transferable skills. The study is of professional interest because it is using a cross‐disciplinary approach, broadening the disciplines involved in teaching medical skills; and could form a model for further cross‐curricular and cross‐discipline work.     

论中国传统园林要素特点

中国古典园林历史非常悠久,在全世界的园林风格中独树一帜,而且取得过辉煌的成就,我们在发展现代园的林的同时应好好借鉴传统园林的精华,让传统园林在现代中国继续发扬壮大     

钢筋混凝土T形柱最不利荷载角的研究

探讨钢筋混凝土T形柱最不利荷载角及其影响因素.利用编制的钢筋混凝土异形柱截面全过程数值分析程序,通过对多种工况下钢筋混凝土异形柱正截面承载力的计算分析,结果表明异形柱最不利荷载角的影响因素主要是轴压比;截面尺寸对最不利荷载角有些影响;而混凝土强度、纵筋配筋面积对最不利荷载角的影响很弱.研究结果为钢筋混凝土异形柱的设计和异形柱的可靠性分析提供参考依据.     

Shock and impact reduction in moderate and strenuous landing activities

Shock reduction has been well studied in moderate activities such as walking and running. However, there is a clear lack of research concerning shock wave transmission and reduction in more strenuous landing activities. In this study, we examined the impact of shock transmission and reduction in landing activities with varied mechanical demands. Ten active males were recruited for the study. They performed five successful step-off landing trials from each of five heights: 30, 45, 60, 75, and 90 cm. Right sagittal kinematics, ground reaction forces, and acceleration were recorded simultaneously. Impact frequencies were analysed using a discrete Fast Fourier Transform and power spectral density was computed. Increased range of motion for the ankle, knee, and hip joints was observed at higher landing heights. The peaks of the vertical ground reaction force, forehead and tibial accelerations, and eccentric muscle work by lower extremity joints were increased with increased landing heights. The peak head power spectral density was severely attenuated at higher frequencies but the peak tibia power spectral density did not demonstrate this trend. Shock reduction showed increased reduction at higher frequencies, but minimal changes across five landing heights. Unlike the responses observed for walking and running, the shock reduction did not show significant improvement with elevated mechanical demands.     

Vertical Ground Reaction Forces of Children during One- and Two-Leg Rope Jumping

Abstract

Sport offers opportunities for children to identify and resolve moral issues. Moral issues in sport have primarily been studied from the researcher's perspective, with the child's perspective relatively ignored. Thus, the purpose of this study was to explore the nature and content of the issues children experienced in sport. Interview participants consisted of 7 boys and 8 girls ranging in age from 10 to 12 years (M = 11.6 years, SD = 1.7) who had competitive youth sport experience. An inductive content analysis revealed that children identified issues surrounding three overall dimensions concerning fairness of adult's actions, negative game behaviors, and negative team behaviors. Specific examples of issues included unfair actions by coaches, disrespecting opponents, and selfish behavior in practice. The self-identified issues both confirmed and expanded upon the content found in hypothetical moral dilemmas in sport.