OBJECTIVE The aim of this study was to identify the procedures adopted by Brazilian orthodontists in the following situations: extraction space closure, anchorage control in case of necessary anchorage for group A and frequency of skeletal anchorage use, especially in the upper jaw. METHODS A questionnaire was sent to the e-mail address of all dentists registered in the Brazilian Federal Coun...

Abstract The Lingdingyang Bridge is a (580+1666+580m) two-tower three-span sea steel box girder suspension bridge. east anchorage adopts figure eight-shaped ground connecting wall foundation. has diameter of 107.1m and width 65m. thickness 1.5m. the maximum depth 63m, embedded medium weathered granite 5m. overburden nearly 50m, bedrock above 80Mpa 10m, excavation foundation pit 42m. anchor body...

We studied whether arsenic, nickel, and chromium compounds that are human carcinogens could induce transformation of cultured primary human diploid foreskin cells (HFC). All nickel compounds tested, PbCrO<, K2Cr2O7, CrO3, Na2HAsO4, NaAsO2, and jV-methyl-A/'-nitro/V-nitrosoguanidine (MNNG) caused significant (p = 0.001) dose-de pendent inductions of anchorage-independent colonies in HFC. kl l.. ...

In orthodontics, anchorage is a prerequisite for the application of therapeutic forces and can limit their successful use. According to the intended treatment goals, desired tooth movements should, therefore, be maximized and undesirable effects minimized. But additional anchorage such as extraand intraoral forces are visible and hence compliance dependent and are associated with the risk of un...

About the Community Anchorage is a combined city-county government that covers Alaska's largest and most important metropolitan area. The combined municipality covers almost 2,000 square miles and has a population of over 280,000. Some 220,000 people live in the " Anchorage Bowl " – the urban area on the Anchorage peninsula that is cut off from the rest of the municipality by geography, militar...

To achieve the efficient, rapid construction of prestressed anchor cables, in this study, through an indoor pull-out test and field basic test, we investigated mechanical behavior, expansion, drawing performance bond properties a new type high-strength, fast anchorage agent. We analyzed influence water material ratio curing time on its determined corresponding construction. It was found that an...

&#x0D; The stability of gravity anchorages is critical to the safe operation suspension bridges. purpose this paper study a anchorage under tension main cables. Large-scale load tests and direct shear nature state saturated were carried out in adit at bottom anchorage, because surface below design water level reservoir be built. Representative rock samples area selected for indoor tests. basic ...