Clothing Colour Preferences in A Hospital Environment in Hong Kong:Part Ⅱ-Paediatric Nurses’Preferences of Colour on Their Uniform

The present study investigated nurses'colour prefer-ences on their uniform in paediatric wards.Results ofthe study provided guidelines for the selecting of ap-propriate colours for nurses'uniforms for paediatricwards,and the comparison of nurses'preferences ofcolours on their uniform and child patients'colourpreferences of nurses'uniform was drawn.     

The ovicidal activity ofcis-dehydromatricaria ester: time-dependance of its enhancement by UV light

Summary Freshly laid eggs ofDrosophila melanogaster were treated with the polyacetylenic compoundcis-dehydromatricaria ester. The toxicity of the chemical was enhanced by treatments with long-wavelength ultraviolet light, and the maximum effect was observed when the UV irradiation was performed 4–5 h after the initial contact of the eggs with the chemical.We are grateful to Professor E. Spiess for advice and assistance, and to the National Institutes of Health (GM 24144) for financial support.     

Tensile property of Pneumatic spliced Short-staple Ring Spun Yarns

The tensile property of the spliced yarn splice under different splicing conditions has been investigated. The retained spliced strength of the splice spliced under different splicing conditions was obtained as the indicator for the performance of the splicer under that particular splicing condition. The results showed that, the length of the yarn tails and the yarn linear density are the parameters that has the most important effect to the tensile property of the spliced yarn.     

Sequence and analysis of chromosome 1 of the plant Arabidopsis thaliana

The genome of the flowering plant Arabidopsis thaliana has five chromosomes. Here we report the sequence of the largest, chromosome 1, in two contigs of around 14.2 and 14.6 megabases. The contigs extend from the telomeres to the centromeric borders, regions rich in transposons, retrotransposons and repetitive elements such as the 180-base-pair repeat. The chromosome represents 25% of the genome and contains about 6,850 open reading frames, 236 transfer RNAs (tRNAs) and 12 small nuclear RNAs. There are two clusters of tRNA genes at different places on the chromosome. One consists of 27 tRNA(Pro) genes and the other contains 27 tandem repeats of tRNA(Tyr)-tRNA(Tyr)-tRNA(Ser) genes. Chromosome 1 contains about 300 gene families with clustered duplications. There are also many repeat elements, representing 8% of the sequence.     

基于时域局部线性预测的视频镜头变换检测

提出了通过时域局部线性预测，在统一框架中准确、高效地检测视频镜头的切变和叠化等镜头变换的新方法．通过理论分析和基于视频数据的线性回归，分别得到叠化预测模式和平稳镜头预测模式．通过同时比较分析两个线性预测模式的误差，在统一框架中检测切变和叠化变换．由于直接在视频流压缩域中进行分析，因此节省了视频解码的时间．采用新方法检测时仅需要对整数进行加、减、比较和移位操作，计算复杂度很低，适合在低功耗、嵌入式设备上运行．采用MPEG-7标准测试视频的实验结果显示：切变检测查全率为95．5％，查准率为93．9%；叠化变换检测查全率为82．2%，查准率为76．0％．检测一段38min的视频耗时仅3．5s．     

Nucleolar proteome dynamics

The nucleolus is a key organelle that coordinates the synthesis and assembly of ribosomal subunits and forms in the nucleus around the repeated ribosomal gene clusters. Because the production of ribosomes is a major metabolic activity, the function of the nucleolus is tightly linked to cell growth and proliferation, and recent data suggest that the nucleolus also plays an important role in cell-cycle regulation, senescence and stress responses. Here, using mass-spectrometry-based organellar proteomics and stable isotope labelling, we perform a quantitative analysis of the proteome of human nucleoli. In vivo fluorescent imaging techniques are directly compared to endogenous protein changes measured by proteomics. We characterize the flux of 489 endogenous nucleolar proteins in response to three different metabolic inhibitors that each affect nucleolar morphology. Proteins that are stably associated, such as RNA polymerase I subunits and small nuclear ribonucleoprotein particle complexes, exit from or accumulate in the nucleolus with similar kinetics, whereas protein components of the large and small ribosomal subunits leave the nucleolus with markedly different kinetics. The data establish a quantitative proteomic approach for the temporal characterization of protein flux through cellular organelles and demonstrate that the nucleolar proteome changes significantly over time in response to changes in cellular growth conditions.