Publications by authors named "P W Fowler"
This study investigates the geochemical characteristics of rare earth elements (REEs) in highland karstic bauxite deposits located in the Sierra de Bahoruco, Pedernales Province, Dominican Republic. These deposits, formed through intense weathering of volcanic material, represent a potentially valuable REE resource for the nation. Surface and subsurface soil samples were analyzed using portable X-ray fluorescence (pXRF) and a NixPro 2 color sensor validated with inductively coupled plasma optical emission spectrometry (ICP-OES).
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- The EFSA Panel evaluated the safety of hesperetin dihydrochalcone as a new flavoring substance, determining that it did not require a read-across with other flavonoids in a previous group assessment (FGE.32).
- The Panel found no genotoxicity concerns and anticipated that hesperetin dihydrochalcone would be metabolized to harmless products, despite lacking direct ADME studies for this substance.
- Although a 90-day study indicated potential effects on thyroid hormone levels, these were deemed non-adverse, and exposure estimates for both adults and children showed sufficient safety margins.
Objective: To investigate the association between clinical, biomechanical, and psychosocial factors and smiling behavior in individuals with treated unilateral cleft lip with or without cleft palate (UCL ± P) compared to non-cleft controls.
Design: Multicenter observational study in New Zealand.
Participants: Individuals aged ≥15 ( = 42) comprised 2 study groups: a UCL ± P group ( = 21) and a non-cleft control group ( = 21).
The closed-shell Hückel-London-Pople-McWeeny formalism for ring currents is extended to Aufbau configurations with open shells calculated as configurational averages. The method is applied to the non-Kekulean benzenoid known as the Clar goblet, recently synthesized on the Au(111) surface. Multiplicity of the ground state is a complication: for the Clar goblet, Hund's rule of maximum multiplicity implies a triplet whereas Ovchinnikov's rule implies a singlet.
View Article and Find Full Text PDFIn 2021 the European Food Safety Authority (EFSA) concluded that "A concern for genotoxicity of TiO2 particles that may be present in E 171 could therefore not be ruled out.". A detailed review of the genotoxicity of titanium dioxide (TiO) was subsequently published by Kirkland et al.
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