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Distribution of Poly- and Perfluoroalkyl Substances in Matched Samples from Pregnant Women and Carbo...
资料库号码: JOUR134774221 | 格式: 网页 | 文档大小: - | 年: 2013 | 内容类型: 文献检索

该论文在世界范围内首次提出全氟化合物(PFASs)在母亲-胎儿之间的传递效率随碳链长度的增加而呈“U”形传递规律,为系统评价不同碳链长度PFASs的胎儿暴露风险提供了全新的依据。普通HPLC-MS/MS对PFASs的检测限(LOQs)约为0.1-0.2 ng/mL,而本研究中采用的UPLC-MS/MS对PFASs的LOQs可达到0.01-0.03 ng/mL,灵敏度提高了一个数量级,可靠的分析手段为“U”形传递规律的澄清提供了保障。

Perfluorinated Compounds in Human Blood, Water, Edible Freshwater Fish, and Seafood in China: Daily ...
资料库号码: JOUR134774225 | 格式: 网页 | 文档大小: - | 年: 2011 | 内容类型: 文献检索

该论文较早的证实我国成人体内全氟辛烷磺酸(PFOS)的暴露途径存在地区差异性,为全面评价我国居民PFOS的暴露风险提供了参考。

多元数学统计方法分析传统草药使用UPLC 超高效液相色谱/TOF-MS飞行时间质谱比较不同样品种类
资料库号码: JOUR10163714 | 格式: PDF | 文档大小: 971.54 kB | 年: 2010 | 内容类型: 文献检索

多元数学统计方法分析传统草药,使用UPLC超高效液相色谱/TOF-MS飞行时间质谱比较不同样品种类

Bioharmonization Peer Reviewed Articles
资料库号码: JOUR134966612 | 格式: 网页 | 文档大小: - | 年: 2018 | 内容类型: 文献检索
Obesity, adipokines, and C-peptide are associated with distinct plasma phospholipid profiles in adul...
资料库号码: JOUR134965627 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

Obesity is associated with dysregulated lipid metabolism and adipokine secretion. Our group has previously reported obesity and adipokines are associated with % total fatty acid (FA) differences in plasma phospholipids. The objective of our current study ...

Highly Improved Electrospray Ionization-Mass Spectrometry Detection of G-Quadruplex-Folded Oligonucl...
资料库号码: JOUR134965629 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

G-quadruplexes are nucleic acids structures stabilized by physiological concentration of potassium ions. Because low stability G-quadruplexes are hardly detectable by mass spectrometry, we optimized solvent conditions: isopropanol in a triethylamine/hexaf...

Panax ginseng genome examination for ginsenoside
资料库号码: JOUR134965639 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

Ginseng, which contains ginsenosides as bioactive compounds, has been regarded as an important traditional medicine for several millennia. However, the genetic background of ginseng remains poorly understood, partly because of the plant’s large and comple...

Spontaneous miscarriage in first trimester pregnancy is associated with altered urinary metabolite p...
资料库号码: JOUR134965631 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

Threatened miscarriage is the most common gynecological emergency, occurring in about 20% of pregnant women. Approximately one in four of these patients go on to have spontaneous miscarriage and the etiology of miscarriage still remains elusive. In a bid ...

Research on the Synthesis of Ionic Liquids/Layered Double Hydroxides Intercalation Composites and Th...
资料库号码: JOUR134965633 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

Three kinds of imidazolium ionic liquids were synthesized, and [Bmim][CH3COO] was selected as a result of its higher deacidification rate at a lower cost.

Safety, Efficacy, and Physicochemical Characterization of Tinospora crispa Ointment: A Community-Bas...
资料库号码: JOUR134965637 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

The high prevalence of pediculosis capitis, commonly known as head lice (Pediculus humanus capitis) infestation, has led to the preparation of a community-based pediculicidal ointment, which is made of common household items and the extract of Tinospora c...

Untargeted metabolomics reveals specific withanolides and fatty acyl glycoside as tentative metaboli...
资料库号码: JOUR134965643 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

•Metabolomics analysis between organic and conventional Physalis peruviana fruits. •There were no significant differences in carotenoids and ascorbic acid content. •Untargeted metabolomics analysis reveals differences between crops. •Withanolides and fatt...

Semi-quantitative analysis of tramadol, dextromethorphan, and metabolites in decomposed skeletal tis...
资料库号码: JOUR134965645 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

The use of filtration/pass-through extraction (FPTE) and ultra-performance liquid chromatography quadrupole time-of-flight mass spectrometry (UPLC–qTOF–MS) to detect tramadol (TRAM), dextromethorphan (DXM), and metabolites from skeletal remains is describ...

Simultaneous determination of organophosphorus pesticides in fruits and vegetables using atmospheric...
资料库号码: JOUR134965376 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

• The performances of soft ionization from atmospheric pressure ionization source were evaluated. • Two ionization modes for fifteen organophosphorus pesticides with APGC were optimized. • Pretreatment methods for fifteen organophosphorus pesticides in fr...

Antioxidant and alpha-glucosidase inhibitory activities of isoflavonoids from the rhizomes of Ficus ...
资料库号码: JOUR134965378 | 格式: 网页 | 文档大小: - | 年: 2016 | 内容类型: 文献检索

A new unique isoflavone derivatives with a cyclic-monoterpene-substituent, ficusin C (1), together with five known compounds (2–6), were isolated from the rhizomes of Ficus tikoua. Their structures were elucidated on the basis of spectroscopic data interp...

Scanning Quadrupole Data-Independent Acquisition, Part B: Application to the Analysis of the Calcine...
资料库号码: JOUR134965368 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

We demonstrate the application of a novel scanning quadrupole DIA method for the analysis of changes in the proteins coimmunoprecipitated with calcineurin during therapeutic antifungal drug treatments of the deadly human fungal pathogen Aspergillus fumiga...

Scanning Quadrupole Data-Independent Acquisition, Part A: Qualitative and Quantitative Characterizat...
资料库号码: JOUR134965372 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

A novel data-independent acquisition (DIA) method incorporating a scanning quadrupole in front of a collision cell and orthogonal acceleration time-of-flight mass analyzer is described. The method has been characterized for the qualitative and quantitativ...

A sensitive method for the determination of Sulfonamides in seawater samples by Solid Phase Extracti...
资料库号码: JOUR134965374 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

•Spectrophotometric method was developed for the determination of eight SNs. •The developed method is simple, accurate, and showed a low detection limit. •Successfully applied for SNs determination in environmental water and drug samples. •SPE-Spectrophot...

Bis(alkyl)thioethers on a biphenyl scaffold: A spectroscopic and structural insight
资料库号码: JOUR134965390 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

•Robust synthetic procedure towards bis(alkyl)thioethers on a polyaromatic backbone. •Restricted rotation of the biphenyl backbone induces axial chirality and results in diastereotopic benzyl CH2 hydrogens. •X-ray structures show two conformers present wi...

Extensive Transformation of the Pharmaceutical Carbamazepine Following Uptake into Intact Tomato Pla...
资料库号码: JOUR134965392 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

Carbamazepine (CBZ) is an antiepileptic drug which is persistent in wastewater treatment plants and the environment. It has been frequently detected in plant material after irrigation with treated wastewater. To date, little information is, however, avail...

A redox-switchable ring-closing metathesis catalyst
资料库号码: JOUR134965398 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

A Ru(II) complex ligated to a quinone-annulated N-heterocyclic carbene (NHC) was synthesized as a redox-active analogue of the Hoveyda–Grubbs II generation catalyst. The complex exhibited a single reversible reduction with a E1/2 of −0.63 V (vs. SCE), and...

Activation of peroxodisulfate and peroxomonosulfate by green synthesized copper nanoparticles for Me...
资料库号码: JOUR134965424 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

•Azadirachta Indica leaf broth was used to reduce the Cu2+ ions to nanoparticles. •Copper nanoparticle size decreased with increase in the dosage of neem leaf broth. •Cu nanoparticle was efficient to degrade MO in the presence of peroxosulfates. •Sulfate ...

Synthesis and characterization of new H-shaped triphenylene discotic room-temperature liquid crystal...
资料库号码: JOUR134965428 | 格式: 网页 | 文档大小: - | 年: 2018 | 内容类型: 文献检索

Herein, four new H-shaped triphenylene discotic liquid crystal tetramers have been designed and synthesized using a copper-free [3+2] cycloaddition reaction between the triphenylene dimer and diazide compounds. To probe the molecular self-assembly and mes...

Electro-oxidation of Ofloxacin antibiotic by dimensionally stable Ti/RuO2 anode: Evaluation and mech...
资料库号码: JOUR134965430 | 格式: 网页 | 文档大小: - | 年: 2018 | 内容类型: 文献检索

•Ti/RuO2 electrode was used for degradation/mineralization of Ofloxacin by electro-oxidation. •Current, pH, Ofloxacin concentration and electrolyte concentration effect on %OFLX and %TOC removal were studied. •Mineralization current efficiency decreased f...

A chiral BINOL-based Gemini amphiphilic gelator and its specific discrimination of native arginine b...
资料库号码: JOUR134965400 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

A novel axially chiral cationic Gemini amphiphile gelator (S1) derived from (S)-BINOL has been synthesized and characterized by 1H NMR, 13C NMR, ESI-MS and FT-IR analyses. The critical micelle concentration (CMC) of S1 was determined to be 0.21 mM in wate...

A practical protocol for comprehensive evaluation of sulfur-fumigation of Gastrodia Rhizoma using me...
资料库号码: JOUR134965403 | 格式: 网页 | 文档大小: - | 年: 2017 | 内容类型: 文献检索

•Metabolome analysis for screening out six sulfur-fumigated markers. •Dissection of chemical transformation of sulfur-fumigated markers. •Times of the minimum content for evaluation of sulfur-fumigation. •Health risk assessment model for rational quality ...