Precise U-Pb ages for the cogenetic alkaline Mount LaTour and peraluminous Mount Elizabeth granites of the South Nepisiguit River Plutonic Suite, northern New Brunswick, Canada

The South Nepisiguit River Plutonic Suite consists of various phases of felsic to mafic plutonic rocks of early Devonian age in northern New Brunswick. The felsic portion of this intrusive suite includes a large pluton of homogeneous, peraluminous biotite granite (the Mount Elizabeth Granite), which is flanked on its western side by the alkaline Mount LaTour Granite. New in situ and mineral separate U-Pb Laser Ablation-Inductively Coupled Plasma Mass Spectro-metry analyses of monazite and zircon grains from both sides of the suite define a crystallization age of 417.3 ± 0.96 Ma for the Mount Elizabeth Granite and 417.7 ± 4.4 Ma for the Mount LaTour Granite. The new data confirm previous geochronological work and indicate a close temporal relationship between these felsic phases of this plutonic suite

High-resolution LA-ICP-MS trace-element mapping of magmatic biotite: A new approach for studying syn- to post-magmatic evolution

ABSTRACT Biotite grains from 22 felsic intrusions in New Brunswick were mapped in situ using a laser ablation-inductively coupled plasma-mass spectrometer (LA-ICP-MS). We investigated the extent to which biotite can retain its magmatic zoning patterns and, where zoning does exist, how it can be used to elucidate early to late stage, syn-magmatic to post-crystallization processes. Although the major element and halogen contents of the examined biotite phenocrysts are homogeneous, two-thirds of the grains display trace-element zoning for Ba, Rb, and Cs. The results also indicated that zoning is better retained in larger grains (i.e., &amp;gt; 500 × 500 μm) with minimal alteration and mineral inclusions. An exceptionally well-zoned Li-rich siderophyllite from the Pleasant Ridge topaz granite in southwestern New Brunswick shows Ti, Ta, Sn, W, Cs, Rb, and V (without Li or Ba) zoning. Cesium values increase from 200 to 1400 ppm from core to rim. Conversely, Sn and W values decrease toward the rim (50 to 10 and 100 to 10 ppm, respectively). Tantalum and Ti values show fewer variations but drop abruptly close to the rim of the grain (100 to 20 and 2000 to 500 ppm, respectively). These observations may indicate crystallization of mineral phases with high partition coefficients for these highly incompatible elements (except Ti) (e.g., cassiterite and rutile) followed by fractionation of a fluid phase at a later stage of magma crystallization. The preservation of zoning may indicate rapid cooling post-crystallization of the parent magma.</jats:p

The pattern and magnitude of Dietary Free Sugar (DFS) consumption and dental caries in school children: A systematic review

Abstract The authors have withdrawn this preprint due to author disagreement.</jats:p

Apatite Chemical Compositions from Acadian-Related Granitoids of New Brunswick, Canada: Implications for Petrogenesis and Metallogenesis

The geochemistry of apatite crystals from fifteen fertile and infertile Acadian-related granitoids of New Brunswick (Canada) was studied in situ, using electron microprobe and laser ablation-inductively coupled plasma-mass spectrometry to further investigate petrogenesis and fertility index among these intrusions. The results indicate a clear geochemical contrast between barren and mineralized samples where apatite grains from barren intrusions are the most hydrous (OH &gt; 0.3 wt. %), with lowest Mn (&lt;1700 ppm), Fe (&lt;800 ppm), and Sn (&lt;0.01 ppm). In contrast, apatite grains from Cu-Mo related intrusions are distinguished by higher Cl (&gt;0.1 wt. %), (La/Yb)N ratios of 21.17, (Eu/Eu*)N ratios of 0.30, and LREE/HREE ratios of 6.03. Apatites from Sn-W related magmatic suites have the highest F (&gt;3 wt. %), Mn (&gt;5350 ppm), Fe (&gt;2200 ppm), Y (&gt;4900 ppm), Sn (&gt;2 ppm), and the lowest Cl (&lt;0.01 wt. %), Sr (&lt;60 ppm), U (&lt;18 ppm), Th (&lt;29 ppm), (Eu/Eu*)N ratios (&lt;0.01), and (La/Yb)N ratios (&lt;0.88). Lastly, apatite grains from Mo-bearing systems have the lowest SiO2 (&lt;0.4 wt. %), Sr (&lt;33 ppm), Th (&lt;28 ppm), a moderate Mn (~3800 ppm), Y (~3500 ppm), and highest FeOt (&lt;0.9 wt. %). However, the results indicated apatite Mn, Sr, LREE/HREE, and (Eu/Eu*)N ratios as the best fertility indices used for discriminating barren from fertile granite intrusions

Precise U-Pb ages for the cogenetic alkaline Mount LaTour and peraluminous Mount Elizabeth granites of the South Nepisiguit River Plutonic Suite, northern New Brunswick, Canada

The South Nepisiguit River Plutonic Suite consists of various phases of felsic to mafic plutonic rocks of early Devonian age in northern New Brunswick. The felsic portion of this intrusive suite includes a large pluton of homogeneous, peraluminous biotite granite (the Mount Elizabeth Granite), which is flanked on its western side by the alkaline Mount LaTour Granite. New in situ and mineral separate U-Pb Laser Ablation-Inductively Coupled Plasma Mass Spectro-metry analyses of monazite and zircon grains from both sides of the suite define a crystallization age of 417.3 ± 0.96 Ma for the Mount Elizabeth Granite and 417.7 ± 4.4 Ma for the Mount LaTour Granite. The new data confirm previous geochronological work and indicate a close temporal relationship between these felsic phases of this plutonic suite.</jats:p

The pattern and magnitude of Dietary Free Sugar (DFS) consumption and dental caries in school children: A systematic review

Abstract Background Dietary Free Sugar (DFS) is considered as one of the main risk factor for dental caries development. This systematic review was designed to assess the relationship between pattern and magnitude of Dietary Free Sugar (DFS) consumption and dental caries in school children aged among 6 to 12 years old. Methods An electronic search of the databases consists of Medline/PubMed, Embase, ISI Web of Science and Scopus was conducted using relevant keywords. Longitudinal studies reporting the relationship between DFS and dental caries focused on school children that were published between 2004 and 2019 in English were selected. The title and abstract of the papers were reviewed by 2 independent researchers and irrelevant papers were excluded. After duplicate removal, the full text of the papers was reviewed. The reference search of the selected papers was performed and finally the quality of included papers assessed using the STROBE check list and the main findings were extracted. Results From 2120 articles searched, 12 longitudinal studies included in this review. Three articles report insignificant relationship between DFS consumption of and dental caries. However, Dietary Free Sugar and dental caries were significantly associated in the primary and permanent dentition of children. Frequent intake of sweet foods and drinks especially before bed, consumption of processed starches and soft drink were considered as important risk factors while frequent consumption of water and dairy product had protective effect. Conclusion This study confirms the limitation of dietary free sugar in school children especially in the form of processed starch and sweet snacks especially before bedtime. Still, there is a need for well-designed studies in this field.</jats:p

Dietary free sugar and dental caries in children: A systematic review on longitudinal studies

Background: Dental caries, as a multi-factorial problem, is prevalent among children. The aim of this review was to assess the association between dietary free sugars (DFS) consumption and dental caries in 6- to 12-year-old children in the recent longitudinal evidence. Methods: In this systematic review, database search was performed in PubMed, Embase, ISI Web of Science and Scopus using the keywords "diet", "dental caries" and "school children".We considered the articles published in English from 2004 to 2019. After duplicate removal,title, abstract data basell text of all included papers were assessed by two independent reviewers. The quality of included papers was assessed using the Newcastle-Ottawa scale. Results: From 2122 papers, ten longitudinal studies were included. In the included studies, the consumption of 100% juice (daily), candy (more than once a week), and soft drink and sweet drinks (at bedtime) were highly associated with caries in children. In few studies, daily consumption of water and dairy products was reported to be protective. However, some studies reported non-significant association between consumption of different sugary items and dental caries. The quality of included studies was moderate. Heterogeneity was observed in the measurement of caries outcome, and data collection tool for diet assessment, and statistical measure, which impeded the meta-analysis of data. Conclusion: The methodology and results in the longitudinal studies on the association of dietary free sugar consumption and dental caries in schoolchildren were heterogeneous, which urge the need for further standard research protocols in this area.</jats:p

Effect of Soymilk Consumption on Waist Circumference and Cardiovascular Risks among Overweight and Obese Female Adults

Background: Soy milk replacement in the diet might have beneficial effects on waist circumference and cardiovascular risk factors for overweight and obese subjects. Therefore, we are going to determine the effects of soy milk replacements on the waist circumference and cardiovascular risk factors among overweight and obese female adults. Methods: In this crossover randomized clinical trail, 24 over weight and obese female adults were on a diet with soy milk or the diet with cow′s milk for four weeks. In the diet with soy milk only one glass of soy milk (240 cc) was replaced instead of one glass of cow′s milk (240 cc). Measurements were done according to the standard protocol. Results: Waist circumference reduced significantly following soy milk period (mean percent change in soy milk period for waist circumference: -3.79 ± 0.51 vs. -1.78 ± 0.55 %; P = 0.02 in the cow′s milk period). Blood pressure, weight, liver enzymes and glycemic control indices did not changed significantly after soy milk period compared to the cow′s milk period. Conclusion: Among over weight and obese patients, soy milk can play an important role in reducing waist circumference. However, soy milk replacement had no significant effects on weight, glycemic control indices, liver enzymes, fibrinogen and blood pressure in a short term trial