Research on the Collapse Coefficient of Collapsible Loess under Unloading

In the geogenetic overburden excavation of underground space projects (such as comprehensive pipe corridors or subways), the foundation stress is in an unloading state. The effect(s) from the unloading on the coefficient of subsidence in the loess area should be considered. In this study, to explore the effect of unloading on the collapsibility of loess, the collapsible loess in the Guanzhong area was considered as the research object. An expression for the unloading collapse coefficient was established based on the unloading stress ratio, unloading collapse ratio, and other parameters. The influence of the unloading on the loess collapse coefficient was studied using an indoor collapsibility test, and the function form and parameters for the expression were determined. As combined with the field test, the accuracy of the expression for the unloading coefficient was verified based on the test value for the specific collapsibility, calculated value for the specific collapsibility, and calculated value for the unloading collapsibility.

Reduction of Combi-Fault Collapsing Using Maximum Fanout Branch Partitioning

Combi-Fault collapsing is a very important approach to reduce linked stuck at faults and to cause effective faults in a combinational circuit. It can significantly moderate the problem of test generation and test work. In this paper, MAXFAN (Maximum Fanout Branch) partitioning is converted into gate level circuit with site of reconvergence into Fanout-Free Regions and implication of faulty values in the cone is passed over to identify checkpoint faults, equivalence and dominance faults. This method is to compute the tests for SSF (single stuck at faults) and consequently achieves low fault collapse ratio. Experimental result shows that max fanout partitioning reduces the number of checkpoints and also reduces the maximum number of faults with low collapse ratio.

Study on the Suitability of Seismic Isolation Technologies for Rural Buildings

Rural buildings are subject to the most serious damage and the highest collapse ratio in earthquake disaster. It is urgent at present to develop seismic isolation technologies applicable to rural buildings under current rural economic conditions of China. Through comparing the existing domestic seismic isolation technologies in respects of the acquisition difficulty level, price and friction coefficient of material and the placement of sliding material, and analyzing the result of simulated shaking table test respectively with the gravel foundation isolation technology and the gravel sliding isolation technology, this paper points out matters needing attention during the development of seismic isolation technologies for rural buildings.

Kajian Aspek Bentuk Lahan dan Geologi Berdasarkan Mikrotremor dalam Perencanaan Ruang Kawasan Rawan Gempa di Kabupaten Bantul Daerah Istimewa Yogyakarta (Studi Kasus: Kecamatan Bantul, Jetis, Imogiri, dan Kretek)

The high risk of loss due to frequent occurrence of earthquakes increasingly demanded adaptable spatialplanning based on disaster mitigation. This study examines the geologic and earth science aspect inearthquake prone area of Bantul Regency. Analysis was presented in microtemor map and microtemorparametric distribution table per unit of land, land use comparison of pre and post 2006 earthquake, andimplementation assessment of land use planning in the study area. Inferential analysis by linearregression indicated the correlation of vulnerability index to collapse ratio. The study found diversity ingeologic sediment characteristics and local landform in respons to earthquake altering the seismicvulnerability index thus affecting collapse ratio. Therefore there is a need for a detailed spatial plan whichinclude a detailed geological sediment and local landform analysis.

THE CARPAL STRETCH TEST AT THE RHEUMATOID WRIST

The purpose of this study was to evaluate the radiographic changes of the carpus for rheumatoid wrists in patients who underwent the Sauvé-Kapandji procedure by examining the clinical results and comparing pre- and postoperative radiographic measurements. We studied 43 wrists in 37 patients who showed vertical laxity in the radiocarpal and midcarpal joint on preoperative carpal stretch test. Pain was improved in all patients and the forearm rotation angles of the wrist were significantly improved after the operation. The carpal collapse ratio was significantly reduced after the operation. The carpal collapse reduction rate was significantly greater in the group with than that in the group without midcarpal joint vertical laxity on the carpal stretch test. Although the Sauvé-Kapandji procedure was not sufficiently effective in preventing carpal collapse, it did have a protective effect against ulnar carpal shift. The results of our study showed that vertical laxity of the midcarpal joint was the risk factor of the carpal collapse after Sauvé-Kapandji procedure.

Single granule pH cycling in antigen-induced mast cell secretion

The pH cycling of individual granules in secreting (serotonin-loaded) mast cells is quantitatively examined using multicolor multiphoton fluorescence microscopy. A typical exocytosis event consists of maximal calcium rise at time zero, granule alkalization a few seconds later and, finally, complete contents release at a fraction of a second after alkalization. Membrane fusion is either transient, as indicated by subsequent granule reacidification, or ‘full’, as indicated by a granule disappearance with a collapse of its membrane into the plasma membrane. The relative frequency of these two coexisting behaviors (the ‘kiss-to-collapse’ ratio) is approximately 2:1. A typical transiently fusing granule experiences multiple alkalization/acidification cycles after addition of exogenous antigen. Between recycling granules, coalescence events are frequent, with 80% resulting in a collapse of the formed granule complex to the plasma membrane. The full dynamics of secretion encompass a complex combination of these granule activities.