Effects of Different Types of Socks on Plantar Pressures,In-shoe Temperature and Humidity in Diabetic Patients

This study aims to evaluate the efficacy of different types of socks for patients with diabetes on reducing in-shoe plantar foot pressure when standing and walking. A total of 5 types of socks,including 3 types of diabetic socks and 2 types of daily /sports socks of various structures are studied. The effects of sock fabrication and design on plantar pressure redistribution that resulting in increasing the underfoot contact area and reducing the risk of pressure ulceration,as well as foot skin temperature and humidity, are examined. The results reveal that regardless of the different knitting structure,thickness and airspace ratio of the sock,both diabetic and daily /sports socks can effectively reduce high plantar pressure on the rear foot,and re-distribute the pressure to other foot regions,like the metatarsal heads. The effects of fabrication and knitting structure on pressure reduction and redistribution are not apparent in this study. However,they have a major impact on the control of foot skin temperature and humidity. The results of the study provide a reference for optimizing the design and functional performance of socks for patients with diabetes.     

水泥稳定碎石材料水化过程的电化学阻抗谱

研究不同水泥掺量下不同水泥稳定碎石结构水化过程的交流阻抗谱特性,通过准Randles型等效电路模型拟合得到的电化学参数分析材料的水泥水化演变规律。研究表明：不同结构在不同水泥掺量下阻抗曲线具有相同的变化规律。随着龄期和水泥掺量的增加,阻抗参数Rs和Rct不断增大,而表征材料微观结构特性的分形维数ds和d则呈现减小趋势,材料的孔隙率不断减小,逐渐形成致密结构。悬浮密实结构由于细集料较多,过多的细集料将粗骨料形成的骨架结构撑开,所形成的结构较疏松,与骨架密实结构相比,总孔隙率偏大。     

船蛆

船蛆(圖一)是生活在海洋裏的一種軟體動物,它能夠鑽入木材,所以又稱為“鑿船虫”或“鑿船貝”。船蛆着生的木材,表面看來好像很完整,但剖開來看時,就可以看到由於船蛆密集,出現了許多洞穴,以致木材內部空虛。完全喪失了它的堅固性(圖二)。因此,很明顯的,船蛆對於沿海魚船、定置網具的牆和碼頭上的木質建築物的危害性是十分嚴重的。船蛆這種動物在世界上分佈極廣,除了北極區域之外幾乎每個地區都會發現。根據我們從過去所發表的文獻上記載的     

休闲农业发展模式研究——以渭南市下邦镇为例

以渭南市下邦镇为例,通过对休闲农业发展现状的SWOT分析,将四种分析条件相互交叉匹配,得出SWOT发展模式策略矩阵,探讨适合下邦镇休闲农业发展模式,以期为渭南市下邦镇休闲农业与乡村旅游的可持续发展提供理论依据.     

Composition and Properties of Thermo-regulated Non-woven Fabrics

A series of non-woven fabrics were fabricated by blending S0- 80wt% of thennoregulated fibres containing n-elcosane, n-nonadecane or n-octadecane with 0 - 40wt% PET fibres and 0- 20wt% PP fibres. The phase change properties, thermal conductivity, thermal resistance, heat flux and inner temperature difference between wool felt and the thermoregulated non-woven fabrics of the non-woven fabrics were measured respectively. The thereto-regulated non-woven fabrics absorb heat at 25- 34℃ and release heat at 10- 25℃. The measured highest enthalpy of the non-woven is approximately 18J/g. During a heating process, heat flux of the non-woven fabrics is composed of three parts, heat absorbed by the cold textile touching the hot plate, heat transmitted from the hot plate to the cold plate, and the heat absorbed by PCM from the hot plate during the phase change process. The measured maximum inner temperature difference in a temperature rising process between the wool felt and the thermo-regulated non-woven fabric is approximately 8℃. The inner temperature difference （Tr-Ts〉0） lasts 16 - 45 min By contrary, the measured maximum inner temperature difference in the temperature decreasing process is approximately - 6. 5℃. The inner temperature difference （Tr-Ts〈0） lasts 16 - 50 min, The temperature regulation properties are obviously observed.     

有害气体報警器

在化学工業生产过程中,常常发生一些有害气体。为了保障工作人員的健康,迫切需要有自动报警的设备。这类設备的作用原理,多数是利用显色剂与有害气体起显色反应、再以光电比色的方法达到报警的目的。显色反应可以在显色溶液中或在显色紙带上进行。溶液显色的方法灵敏度较高,但設备比较复杂,并且显色溶液的消耗量很大。紙带显色虽然灵敏度稍差,但是經常性消耗小,所以更适合于工業生产上应用。我们设计的这种报警器是采用紙带显色的方法;同时紙带的运行采取了间歇式(即每间隔一定时间运