European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies最新文献

Synthesis and Characterization of Fatty Acid Furfuryl Ester Mixtures: Biodiesel from Furfuryl Alcohol 脂肪酸-糠醇酯混合物的合成与表征:糠醇生物柴油

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 2019-01-01 DOI: 10.15640/jcb.v7n1a3

Amanda L. Raley, Jenny P. Beldin, Russell J. Franks

{"title":"Synthesis and Characterization of Fatty Acid Furfuryl Ester Mixtures: Biodiesel from Furfuryl Alcohol","authors":"Amanda L. Raley, Jenny P. Beldin, Russell J. Franks","doi":"10.15640/jcb.v7n1a3","DOIUrl":"https://doi.org/10.15640/jcb.v7n1a3","url":null,"abstract":"The synthesis of biodiesel fuels from triacylglycerols and common alcohols such as methanol and ethanol has been reported using a variety of methods and catalysts. As part of an effort to explore the properties of biodiesel fuels made from novel feedstocks, furfuryl alcohol is used as the alcohol component in biodiesel synthesis. Commercially-available cooking oils were transesterified using furfuryl alcohol and K2CO3 in the presence of a room-temperature ionic liquid catalyst. The resulting product is a fatty acid furfuryl ester (FAFurE) mixture. After purification, the FAFurE product mixtures were analyzed using 1H-NMR spectroscopy. Percentage conversion values were calculated using integration data from the NMR spectra. Percent conversion values ranged from 19 to 75%. The wide range in percent conversion has been attributed to steric interactions between the bulky nucleophile and polyunsaturated fatty acid chains in the oils used. This work represents a proof-of-concept that furfuryl alcohol can serve as an alternative alcohol source for biodiesel fuels or biodiesel additives.","PeriodicalId":77119,"journal":{"name":"European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73017535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

nvironmental Monitoring of NOX, Total Oxidants and the Implications for Photochemistry of Air Pollution over Ilorin Shed, Nigeria 尼日利亚Ilorin Shed地区氮氧化物、总氧化剂的环境监测及其对空气污染光化学的影响

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 2019-01-01 DOI: 10.15640/jcb.v7n1a1

A. Raheem, A. Adekola, Obioh Obioh

{"title":"nvironmental Monitoring of NOX, Total Oxidants and the Implications for Photochemistry of Air Pollution over Ilorin Shed, Nigeria","authors":"A. Raheem, A. Adekola, Obioh Obioh","doi":"10.15640/jcb.v7n1a1","DOIUrl":"https://doi.org/10.15640/jcb.v7n1a1","url":null,"abstract":"The assessment of oxides of nitrogen (NO X ) and total oxidants as ozone (O 3 ) over the air shed of a typical average tropical equatorial city monitored with the aid of high volume sampler for three years is presented using three urban site classes and a control. The mean concentrations for all sites during wet season (May October) were 3.31 ± 0.40 ppb for NO X , 21.86 ± 2.47 for O 3 while the dry season (November - April) mean concentration values were 2.03 ± 0.23 ppb for NO x and 32.44 ± 5.13 for O 3 . Mean value at the control site was an order of magnitude lower than the urban sites during the two seasons except concentration of O 3 higher during the dry season. Traffic density and trace gas concentrations showed good correlation of 0.98 (P<0.05). NO x was confirmed to be a strong precursor for O 3 formation. The influence of Harmattan dust in impeding the photochemistry of O 3 formation from November to January (NDJ) months was observed. The overall concentration levels of NOx and O 3 for the air shed are 2.67 ± 0.32 and 27.15 ± 3.8 respectively, within the limit of United States Environmental Protection Agency (USEPA) guidelines for air quality standards.","PeriodicalId":77119,"journal":{"name":"European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87036639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Increased Oxidative/Nitrosative Stress in Common Metabolic Diseases in Gaziantep Region 加济安泰普地区常见代谢性疾病中氧化/亚硝化应激增加

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 2019-01-01 DOI: 10.15640/jcb.v7n2a1

M. Tarakçıoğlu, H. Ulusal, M. Keskin, Y. Tuncer, S. Taysı

{"title":"Increased Oxidative/Nitrosative Stress in Common Metabolic Diseases in Gaziantep Region","authors":"M. Tarakçıoğlu, H. Ulusal, M. Keskin, Y. Tuncer, S. Taysı","doi":"10.15640/jcb.v7n2a1","DOIUrl":"https://doi.org/10.15640/jcb.v7n2a1","url":null,"abstract":"The balance between oxidative/nitrosative stress and antioxidant activity has an important role in oxidative stress associated diseases such as phenylketonuria (PKU) and maple syrup urine disease (MSUD). We aimed in this study to evaluate the possible association between oxidative/nitrosative balance and clinical features of PKU and MSUD patients. The study included 22 controls, 40 PKU and 18 MSUP patients. Serum malondialdehyde (MDA), peroxynitrite (ONOO-), 8-OH deoxyguanosine (8-OHdG), oxidative DNA damage marker, levels and some amino acid in plasma of patients were measured. Serum MDA and ONOOlevels were significantly higher in PKU and MSUD patients compared to the control group. Plasma valine leucine, isoleucine and phenylalanine levels were significantly higher in MSUD patients than in the control and PKU groups. Similarly, plasma phenylalanine levels were significantly higher in PKU patients compared to control and MSUP group. There was no difference between 8-OHdG levels when all groups were compared. Consequently, the results of this study clearly show that oxidative / nitrosative stress increases in patients with PKU and MSUD. Antioxidant supplementation may be beneficial in the treatment of these patients.","PeriodicalId":77119,"journal":{"name":"European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84929583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of Agmatine Rate by Spectrofluorimetric Method in Alkaline Medium: Optimization and Application on Shrimp. 荧光光谱法测定碱性培养基中Agmatine的含量:优化及在对虾上的应用。

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 2019-01-01 DOI: 10.15640/jcb.v7n1a2

Khémesse Kital, M. Traoré, Diégane Sarr, M. Mbaye, O. Mbaye, L. Cissé, M. D. G. Seye, A. Coly, F. Delattre, A. Tine

{"title":"Determination of Agmatine Rate by Spectrofluorimetric Method in Alkaline Medium: Optimization and Application on Shrimp.","authors":"Khémesse Kital, M. Traoré, Diégane Sarr, M. Mbaye, O. Mbaye, L. Cissé, M. D. G. Seye, A. Coly, F. Delattre, A. Tine","doi":"10.15640/jcb.v7n1a2","DOIUrl":"https://doi.org/10.15640/jcb.v7n1a2","url":null,"abstract":"In this work, a spectrofluorimetric method was developed to determine the rate of agmatine (AGM) in shrimp using orthophthalaldehyde (OPA) as derivatization agent. To optimize analytical results, the stoichiometry of the orthophthalaldehyde-agmatine complex (OPA-AGM) was determined. The effects of agitation and temperature on the fluorescence spectra of the complex in alkaline medium (pH 13) were then studied. We obtained in all media satisfactory analytical performances with very low detection limits (DL) ranging from 0.36 to 2.52 ng/mL and a quantification limit (QL) oF 1.62 to 8.40 ng/mL The relative standard deviations (RSD) obtained ranged from 0.08 to 1.5%, which shows the excellent replicability of measurements. In addition, recovery rates found in shrimp extract, between 96.3% and 103.4%, show the accuracy of measurements. Lastly, the interference effects on the determination of agmatine rate with biogenic amines and some metal ions likely to be present in shrimp were studied.","PeriodicalId":77119,"journal":{"name":"European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84708743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Short Communication 简短的沟通

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 2017-01-01 DOI: 10.1515/cclm.1995.33.7.441

Mayank Jain

{"title":"Short Communication","authors":"Mayank Jain","doi":"10.1515/cclm.1995.33.7.441","DOIUrl":"https://doi.org/10.1515/cclm.1995.33.7.441","url":null,"abstract":"Aim of the studyTo analyze the referral pattern, indications and results of esophageal manometry in our setting. MethodsIn this retrospective study, manometry records of all consecutive patients who underwent esophageal manometry from January 2013 to June 2015 were analyzed. The results were interpreted as per Chicago classification v.3.0. The data was entered in Microsoft excel sheet and analyzed using necessary tests. Results-A total of 220 patients with a mean age of 45 years and male to female ratio of 7:4 formed the study group. The indications for manometric evaluation includeddysphagia (87,39.54%), gastroesophageal reflux(76,34.54%) , non-cardiac chest pain(25,11.36%), dyspepsia(20,9.09%) and prior to fundoplication surgery(12,5.45%). , 39.1% patients could be diagnosed with a definitive motility disorder while 29% had ineffective motility or frequently failed peristalsis. 36% patients had a normal study. ConclusionsEsophageal manometry in our setting is done mainly for dysphagia and reflux symptoms. The main referrals are from fellow gastroenterologists and surgeons. In 39% of cases, a definite diagnosis is possible. Achalsiacardia is the most common cause of motor dysphagia.","PeriodicalId":77119,"journal":{"name":"European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/cclm.1995.33.7.441","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67394019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Short Communication 简短的沟通

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 2014-01-01 DOI: 10.1515/cclm.1991.29.5.327

S. Yazdani, M. Sharbatdaran, M. Samakoosh, Z. Bouzari, Z. Masoudi

{"title":"Short Communication","authors":"S. Yazdani, M. Sharbatdaran, M. Samakoosh, Z. Bouzari, Z. Masoudi","doi":"10.1515/cclm.1991.29.5.327","DOIUrl":"https://doi.org/10.1515/cclm.1991.29.5.327","url":null,"abstract":"Background: Bilateral salpingo-oophorectomy in women may lead to metabolic consequences in patients. This study was performed to determine the glucose tolerance and lipid profile after menopause resulting from bilateral salpingo-oophorectomy. Methods: From September 2011 to March 2013, 31 women participants aged 46-52 years who underwent hysterectomy and bilateral salpingo-oophorectomy for benign reasons were recruited. An oral glucose tolerance test (OGTT), triglyceride (TG), total cholesterol, low density lipoproteis (LDL), high density lipoprotein (HDL) was performed before and 6 months after surgery. Fasting insulin and 2-hour insulin levels, fasting insulin / glucose indexes and homeostasis model assessment HOMA indexes were also measured. Results: The mean age of the patients was 48.6±2.9 years. The mean 2-h glucose level in OGTT changed from 26.7 before surgery to 111.1 μUnit/ml (P=0.030). The mean level of lipid profile before and after surgery for TG was 132.3 versus 181.2 mg/dl (P=0.005), total cholesterol 177.4 versus 206.7 mg/dl (P=0.0001) and LDL 98.4 versus 115.3 mg/dl (P=0.003). The other variables showed no significant difference. Conclusion: The results indicate that lipid profile changes like increase of TG, total cholesterol and LDL should be considered before removing the ovary during hysterectomy in premenopausal women.","PeriodicalId":77119,"journal":{"name":"European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/cclm.1991.29.5.327","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67392581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

TECHNICAL NOTE 技术报告

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 2003-01-01 DOI: 10.1515/cclm.1997.35.4.305

E. F. V. D. Hil, K. Beekmann, J. Keijer, P. Hollman, I. Rietjens, E. M. Schothorst

引用次数: 1

More on inter-method variability of sodium and potassium measurements in patients sera and control materials. 更多关于患者血清和对照材料中钠和钾测量的方法间差异。

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 1997-12-01

F Zoppi, E Guagnellini, A Manzoni

引用次数: 0

It is rational to measure serum lactate dehydrogenase isoenzyme-1 activity in patients with testicular germ cell tumours. 检测睾丸生殖细胞肿瘤患者血清乳酸脱氢酶同工酶-1活性是合理的。

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 1997-12-01

F E von Eyben, P Hyltoft Petersen, O Blaabjerg, E Lindegaard Madsen

引用次数: 0

The origins of the European Confederation of Laboratory Medicine (ECLM) 欧洲检验医学联合会(ECLM)的起源

European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies Pub Date : 1997-12-01

R Dybkaer

引用次数: 0