The study of limited space air purification materials has been generally noticed.

By using the finite element method, the effect of crowd on the propagation chara cteristic of electromagnetic waves in a limited space such as an underground mar ketplace and an underground platform is investigated.

This study has a computer aided numeric simulation of the heat and mass exchanging process in limited space on basis of the mathematical model founded previously.

Asphyxiation and poisoning are frequently occurred accidents when working in confined space usually happened in closed or semi-closed equipment, confined on the ground or underground with hazardous gases such as H_2S, CO, CO_2, NH_3 and CH_4.

This paper introduces the sample methods, testing point selection, testing procedures and results processing of portable gas detector applied in the confined space in the petro-chemical company.

Common mistakes in confined space operation are summarized,and corrective actions for the mistakes are recommended according to the philosophy of HSE management systems.

This paper explores history from ancient Greece to Newton for insights on the controversy between finite space and infinite space, and presents an interpretation of the fundamental cause for which Newton s theory of infinite space replaced Aristotle s theory of finite space.

A new diffuse model was constructed for the electrode system of glucose sensor,aiming at the unique "finite space" electrochemical problem in transdermal technique.

Approach of optimizing adversarial search in a limited space;

The influences of shear buckling stress, critical load and buckling mode of the corrugated steel webs with different web dimension parameters in prestressed concrete composite box-girder bridge are investigated by analytical method and 3D finite element method.

A 3D finite element model of an externally prestressed concrete simple-supported composite box-girder bridge with corrugated steel webs is established by means of the composite element method.

Based on the 3D finite element model,the static and dynamic behaviors of the bridge are analyzed,and the influences of the rigidity ratio on strengthened effect are discussed.

Taking Euler Elastic Theory as the base, the article applies the space finite element process to carry out the stabilization analysis of T-frame of the high-pier curve continuous rigid frame bridge under the construction of the largest cantilever.

Continuous steel box girder bridge with small radius and large curvature which is common in overpass project was analyzed,with space finite element model based on a case study project and the bridge structure performance under different loads was analyzed and compared,with the loading characters of the curved steel box girder bridge,the shear lag effect and practical calculation method discussed.

South Bridge in Chao Yang deseases were introduced in this paper,and were analysed by space finite element method,cracking reasons of large gusset of rigid frame arch bridge were analysed,the desease principle of micro-curved plate was specified.