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, PbCrO4, K2Cr2O7, CrO3, Na2HAsO4, NaAsO2, and N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) caused significant (p = 0.001) dose-dependent inductions of anchorage-independent colonies in HFC. KH2AsO4, C...

INTRODUCTION Anchorage control in patients with severe skeletal Class II malocclusion is a difficult problem in orthodontic treatment. In adults, treatment often requires premolar extractions and maximum anchorage. Recently, incisor retraction with miniscrew anchorage has become a new strategy for treating skeletal Class II patients. METHODS In this study, we compared treatment outcomes of pa...

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...

Background The Institute of Medicine recommends changing organizational policy as a key element of evidence-based practice (EBP) implementation; however, policy change alone may be insufficient to change provider practice behavior [1,2]. Engaging key organizational stakeholders in the policy change process may foster buy-in, particularly if the policy is piloted and refined alongside the new pr...