Introduction to B–C–N Materials

Lee, Chee Huei; Kayastha, Vijaya; Wang, Jiesheng; Yap, Yoke Khin

doi:10.1007/978-1-4419-0086-9_1

Cited by 15 publications

(14 citation statements)

References 135 publications

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“…We measured carotenoids using high performance liquid chromatography (HPLC), and concentrations were quantified using photodiode array detection as described elsewhere. [13] Detection limits (mg L −1 ) for individual carotenoids were 0.01 mg L −1 , apart from α-carotene which was 0.005 mg L −1 . All carotenoid values were above the detection limit apart from single measurements for two participants for α-cryptoxanthin, and one participant for lycopene.…”

Section: Biological Sample Collection and Processingmentioning

confidence: 90%

Reproducibility of Dietary Biomarkers in a Multiethnic Asian Population

Whitton

Ong

Dam

2019

Molecular Nutrition Food Res

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Scope Dietary biomarkers allow for study of diet and disease risk relationships, but a key requirement is that these biomarkers are reproducible and reflect long‐term diet. This study assesses reproducibility of selected dietary biomarkers in a multi‐ethnic Asian population, and quantifies diet‐disease relationship attenuation arising from use of a single biomarker measurement. Methods and results Intra‐class correlation coefficients (ICC) are used to evaluate the reproducibility of urinary isoflavone and enterolignan, total plasma fatty acid (FA), and serum carotenoid concentrations measured 4 months apart in adult Singapore residents (ethnic Chinese, n 59; Malay, n 46; Indian, n 56). Total carotenoid ICC is 0.75 (95% confidence interval (CI) 0.68, 0.81), ranging from 0.63 to 0.84 for individual carotenoids. FA ICC (median) is 0.74 (inter‐quartile range 0.70–0.78). Total isoflavone ICC (95% CI) is 0.21 (0.06–0.35). Total enterolignan ICC is 0.42 (0.28, 0.54). Attenuation factors associated with a single time point measure ranged from 0.74 to 0.94 for carotenoids and FAs, and 0.42 to 0.70 for isoflavones and enterolignans. Conclusions In a multi‐ethnic Asian population, single measures of most serum carotenoids and plasma FAs likely represent habitual diet, whereas reproducibility of urinary isoflavones and enterolignans is moderate, possibly due to rapid excretion.

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Section: Biological Sample Collection and Processingmentioning

confidence: 90%

Reproducibility of Dietary Biomarkers in a Multiethnic Asian Population

Whitton

Ong

Dam

2019

Molecular Nutrition Food Res

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“…Molecular modeling calculations were performed using the Gaussian 09 W software. The ground state geometries and the vibrational spectra for the free dto were carried out employing density functional theory [26,27] with B3LYP hybrid functional [28] (Becke's gradient-corrected exchange correlation [29] in conjunction with the Lee-Yang-Parr correlation functional with three parameters [30] ). The basis set was 6-311G++(d,p; scale factor of 0.964 according to the literature [31,32] ).…”

Section: Calculationsmentioning

confidence: 99%

Probing the dynamics of dithiooxamide coordinated to gold nanoparticles using SERS

Grasseschi

Zamarion

Toma

2018

J Raman Spectroscopy

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The substitution kinetics and specific binding modes of the dithiooxamide (dto) ligand at the metal surface have been investigated and interpreted on the light of theoretical and experimental Raman studies. By monitoring the vibrational properties of this ligand, it was shown that gold nanoparticles employed as surface‐enhanced effects (SERS) probes are strongly dependent on the coordination chemistry of the ligands at the metal interface. The binding of dto to the gold nanoparticles led to linkage isomers, and at low concentrations, the bidentate form, corresponding to bis‐thione‐Au bond in cis configuration {Au‐S(NH2)CC(NH2)S‐Au}, was the predominating species. Even at high concentrations, the cis‐configuration was observed first; but as the ligand competition dynamics proceeded, the binding mode gradually changed into a monodentate thione‐Au mode {AuS(NH2)CCS(NH2)}. In this mode, the dto ligand adopts a thermodynamically favorable trans‐conformation geometry, producing dramatic changes in the SERS spectra. Such dynamic behavior of the ligand at the metal plasmonic surface is of crucial importance, as one of the possible factors associated with lack of reproducibility of the SERS spectra frequently reported in the literature.

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“…레독스 흐름형 전지는 전극(electrode), 전해질(electrolyte), 멤브레인(membrane) 및 분리판 (bipolar plate) 등의 핵심 부품들로 이루어져 있으 며, 분리판은 해당 에너지 장치 내의 전도 및 통전, 배출, 분리 등 핵심적인 역할을 하는 부품이다 3) . 현 재까지는 카본계 재질의 분리판이 일반적으로 사용 되고 있으나 카본계 분리판의 낮은 가공성, 높은 체 적 점유율 그리고 낮은 기계적강도 등의 문제점으 로 인하여 이를 대체할 수 있는 새로운 재질의 분 리판 연구가 활발히 진행되고 있다.…”

Section: 서 론unclassified

“…현 재까지는 카본계 재질의 분리판이 일반적으로 사용 되고 있으나 카본계 분리판의 낮은 가공성, 높은 체 적 점유율 그리고 낮은 기계적강도 등의 문제점으 로 인하여 이를 대체할 수 있는 새로운 재질의 분 리판 연구가 활발히 진행되고 있다. 이러한 문제점들은 금속, 합금 혹은 복합물은 카 본을 사용할 경우 해결할 수 있는 가능성이 있다 3,4) . 5,6) .…”

Section: 서 론unclassified

Evaluation of Corrosion and Surface Resistance of Ni-P_x/C Multi Layer

Park¹,

Jung²,

Lee

2012

Journal of the Korean institute of surface engineering

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Ni-P/C multi-layer was synthesized by electroless plating and paste coating for better corrosion and surface conductance as a metallic bipolar plate. The Ni-P layer could be synthesized with the range of 2.6~22.4 at.% P contents and it's surface morphology and corrosion resistance depend on content of P. Corrosion resistance of the Ni-P layer in sulfuric acid by electrochemical test is similar with pure Ni. Surface resistance of pure Ni after corrosion was increased about 8% compared to pure Ni. On the other hand, that of the Ni-P/C composite with 20% carbon content was increased only 1%.

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Introduction to B–C–N Materials

Cited by 15 publications

References 135 publications

Reproducibility of Dietary Biomarkers in a Multiethnic Asian Population

Reproducibility of Dietary Biomarkers in a Multiethnic Asian Population

Probing the dynamics of dithiooxamide coordinated to gold nanoparticles using SERS

Evaluation of Corrosion and Surface Resistance of Ni-P_x/C Multi Layer

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Introduction to B–C–N Materials

Cited by 15 publications

References 135 publications

Reproducibility of Dietary Biomarkers in a Multiethnic Asian Population

Reproducibility of Dietary Biomarkers in a Multiethnic Asian Population

Probing the dynamics of dithiooxamide coordinated to gold nanoparticles using SERS

Evaluation of Corrosion and Surface Resistance of Ni-Px/C Multi Layer

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Evaluation of Corrosion and Surface Resistance of Ni-P_x/C Multi Layer