家具的材料与风格创新初探

影响家具风格创新的因素是多方面的,其中由于家具对材料的特殊依赖性,使得家具材料的创新会直接引导和推动着家具风格创新的发展,家具材料成了家具艺术实现的重要物质媒介。本文主要探讨了家具材料创新与家具风格创新的相互影响和关系等内容。     

MPEG标准中的音频编码与应用

MPEG系列标准是计算机多媒体应用比较广泛的国际标准之一,音频编码是这标准中的重要内容.近年来人们对压缩音频数据的研究已经取得了很大的进展,本文对几种MPEG音频编码标准进行了较为详细的分析和比较,并简要介绍了它们主要的应用.     

云南木雕的发展历史

根据资料,时不同历史时期云南木雕的艺术风格进行了简要的阐述,并分析了这一民族传统工艺的市场发展前景。     

一种分布式自治物流信息系统构架

针对物流企业及零售商分散的特点和客户的多样化个性化需求,为了整合分散的物流信息,建立具有弹性的物流对象协同运作模式,解决RFID与该构架的信息集成,提出了一种基于Internet的分布式协调自治物流信息系统构架。详细描述了系统的各关键环节。     

柴油机尿素SCR系统动态氨泄漏的试验研究

通过台架试验定量研究了瞬态工况尿素选择催化还原系统中氨泄漏与氨存储量的关系。研究了初始温度分别为200、240、270和320℃时,催化器氨存储饱和后快速升温到400℃过程中的氨泄漏情况;在相同变工况条件下,分析了氨存储饱和度对氨泄漏的影响;基于台架测试结果,对变工况过程中的尿素喷射控制策略进行了修正。研究结果表明:不同的升温过程氨泄漏程度不同,初始温度越低,在快速升温过程中越容易产生氨泄漏;氨存储饱和度对氨泄漏的影响很大,试验中氨存储饱和度小于58%时,瞬态工况不会出现氨泄漏。ESC测试结果表明:修改后的控制策略使催化器出口NH3的体积浓度降低到10×10-6以下,同时NOx转化效率没有明显下降。     

瓦斯抽放钻孔涌水综合治理技术实践

针对高河矿W4307回风顺槽132-1#瓦斯抽放钻孔在施工过程中出水的问题,分析出水原因,在不起拔钻孔钻杆的情况下,对瓦斯抽放钻孔进行扩孔、安装套管、注浆固管及安装阀门控制放水,保证了孔口管的固结效果。试验表明:在放水过程中钻孔没有出现破坏,孔口管壁没有出现渗水和涌水现象,瓦斯抽放钻孔涌水治理效果良好。     

An adaptive clinical decision support system for serving the elderly with chronic diseases in healthcare industry

With the increasing ageing population worldwide, providing effective nursing care planning in nursing homes is important in meeting the expectations of elderly patients and in streamlining the healthcare information process, hence maintaining high‐quality services. Instead of the traditional manual nursing care planning formulation based on expert experience and subjective judgement, this paper describes an adaptive decision support system, namely, the cloud‐based nursing care planning system, to enable decision making in formulating nursing care strategies. By integrating cloud computing technology and the case‐based reasoning (CBR) technique, medical records and documents pertaining to the elderly can be captured in real time, whereas appropriate treatment plans based on past similar treatment records can be formulated. However, the current case adaptation processes in CBR rely on domain experts to modify retrieved cases, which may not satisfy the needs of the elderly. Therefore, text mining is integrated in the case adaptation process of CBR for extracting up‐to‐date medical information from the Internet so that its efficiency can be improved. By conducting a pilot study in a nursing home, it was shown that the time for formulating applicable treatment plans for elderly patients can be reduced, and the service satisfaction level can be enhanced.     

Calf massager: Intervention for body muscle discomfort during prolonged standing

Many occupations require workers to stand for long periods of time without proper interventions, which causes discomfort in the back and lower limbs. Therefore, this study aims to assess the effectiveness in alleviating body muscle discomfort during prolonged standing through the use of a calf massager. This study was conducted among male workers at a manufacturer with production line workers and the list was obtained from the HR Department and simple random sampling was done by number categorization. A total of 100 respondents (50 respondents for both the control and the experimental groups) participated in this study. The experiment took place in a room with a similar setup for the production line. Each respondent was requested to perform the simulated task for 2 hr. For the experimental group, the calf massager was turned on every 15 min. At every 15‐min interval after turning on the calf massager, respondents from both groups were required to evaluate their discomfort level on a Borg's scale CR‐10 questionnaire. The results showed that the level of body discomfort among respondents in the experimental group reduced (20–30%) compared with that of the control group. Multivariate analysis results revealed that the discomfort rating for the lower back, knees, thighs, calves, and feet was significantly lower (p < .05) among the experimental group compared with the control group. For lower body parts, the lower back region was statistically significant (p < .05) at the 90th, 105th, and 120th min; the thigh region was statistically significant (p < .05) at the 120th min; the knee region was statistically significant (p < .05) at the 105th and 120th min; the calf region was statistically significant (p < .05) at all minute intervals except the 15th and 45th min, while the feet region, was statistically significant at the 105th and 120th min. Therefore, this study indicates that calf massage treatment is capable of reducing body muscle discomfort during prolonged standing and highlights the significance of calf massage.     

Fe-(Co6Ag94)颗粒膜磁光芯片的制备及研究

采用二分掩膜技术向溅射沉积的(Co6Ag94)薄膜中组合注入Fe离子，制备成具有不同Fe含量的16单元Fe-(Co6Ag94)颗粒膜磁光芯片。对制备态和退火态的Fe-(Co6Ag94)颗粒膜的物相进行了XRD研究。不同退火温度下，物相的演变反映出了退火过程中Co、Fe相和FeCo相纳米微晶的析出长大过程。采用原子力显微镜(AFM)对薄膜表面的研究结果表明，在退火过程中形成了嵌于基底中的纳米颗粒相。对制备态和不同温度退火后芯片各单元的磁光性能进行了测量，结果表明极向Kerr旋转角晚随着注入Fe含量的增加而增大，这可归因于颗粒膜中铁磁相的增多。在500℃以下，随着退火温度的增加，Fe-(Co6Ag94)颗粒膜的克尔磁光效应增加。对不同温度退火的样品进行穆斯堡尔谱测量，结果证明一定尺寸纳米Fe微晶颗粒的出现是磁光效应提高的主要原因之一。     

Dichloroacetate Radiosensitizes Hypoxic Breast Cancer Cells

Mitochondrial metabolism is an attractive target for cancer therapy. Reprogramming metabolic pathways can potentially sensitize tumors with limited treatment options, such as triple-negative breast cancer (TNBC), to chemo- and/or radiotherapy. Dichloroacetate (DCA) is a specific inhibitor of the pyruvate dehydrogenase kinase (PDK), which leads to enhanced reactive oxygen species (ROS) production. ROS are the primary effector molecules of radiation and an increase hereof will enhance the radioresponse. In this study, we evaluated the effects of DCA and radiotherapy on two TNBC cell lines, namely EMT6 and 4T1, under aerobic and hypoxic conditions. As expected, DCA treatment decreased phosphorylated pyruvate dehydrogenase (PDH) and lowered both extracellular acidification rate (ECAR) and lactate production. Remarkably, DCA treatment led to a significant increase in ROS production (up to 15-fold) in hypoxic cancer cells but not in aerobic cells. Consistently, DCA radiosensitized hypoxic tumor cells and 3D spheroids while leaving the intrinsic radiosensitivity of the tumor cells unchanged. Our results suggest that although described as an oxidative phosphorylation (OXPHOS)-promoting drug, DCA can also increase hypoxic radioresponses. This study therefore paves the way for the targeting of mitochondrial metabolism of hypoxic cancer cells, in particular to combat radioresistance.