European Chemical Bulletin最新文献_第9页

PRELIMINARY LABORATORY-SCALE INVESTIGATION OF PLANT BIOMASS HARVESTING EFFECT ON WASTE NUTRIENT REMOVAL FROM FISH FARM WASTEWATER 植物生物量收获对养鱼场废水中废弃养分去除效果的初步实验研究

European Chemical Bulletin Pub Date : 2021-01-19 DOI: 10.17628/ECB.2021.10.171-178

Y. S. Ng, Durrah Faiqah Mohd Farid, D. Chan

{"title":"PRELIMINARY LABORATORY-SCALE INVESTIGATION OF PLANT BIOMASS HARVESTING EFFECT ON WASTE NUTRIENT REMOVAL FROM FISH FARM WASTEWATER","authors":"Y. S. Ng, Durrah Faiqah Mohd Farid, D. Chan","doi":"10.17628/ECB.2021.10.171-178","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.171-178","url":null,"abstract":"Macrophytes can remediate fish farm wastewater sustainably before discharging them to water bodies. However, macrophytes harvesting could potentially affect the phytoremediation since biomass removal could reduce its performance. In this study, the harvesting effect on the waste nutrient removal performance of Spirodela polyrhiza and Lemna sp. were carried out in fish farm wastewater for 14 days. Water quality assays include ammonia (NH 3 -N), nitrate (NO 3 - -N), phosphate (PO 4 3- ), COD, turbidity and TSS were monitored. The biomass composition of the macrophytes at the end of the experiment was assessed. From the results, biomass harvesting affected the nitrate, phosphate, TTS and macrophyte fresh weight, but not for ammonia, COD and turbidity. Nitrate increased slightly after S. polyrhiza and Lemna sp. were harvested, with their levels still controlled under typical natural level. Harvesting S. polyrhiza and Lemna sp. enhanced phosphate and TSS removal from the macrophytes' wastewater and biomass increment. Overall, harvesting had more improved results compared to the one without harvesting. 83% phosphate, 93% turbidity, 93% TSS, complete ammonia and COD removal from the fish farm wastewater could be attained by the macrophyte groups. The obtained data can help improve the harvesting practice on macrophytes, predicting and elevating the phytoremediation performance in the wastewater.","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"171-178"},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42716113","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

THE COMPARATIVE STUDY OF MEDICAL DEVICE REGULATION OF INDIA AND FOREIGN COUNTRIES: A REVIEW 印度与国外医疗器械监管比较研究综述

European Chemical Bulletin Pub Date : 2021-01-17 DOI: 10.17628/ECB.2021.10.167-170

J. Patel, P. Kapupara

{"title":"THE COMPARATIVE STUDY OF MEDICAL DEVICE REGULATION OF INDIA AND FOREIGN COUNTRIES: A REVIEW","authors":"J. Patel, P. Kapupara","doi":"10.17628/ECB.2021.10.167-170","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.167-170","url":null,"abstract":"Medical devices are used vastly used in the healthcare pharmaceutical industry throughout the world. It has become the integral part of modern medical industry. The dependency on the medical device has increased handsomely in treatment of any diseases. This dependency has led to quality issues in medical care. By using medical devices for the treatment of diseases has improved the patient's health, but sometimes they also complicate the condition of the patients, as the body does not accept them and consider them as a foreign body. Therefore, for the manufacturing of medical devices, safety and quality are given prime importance in its regulation. The regulations are different in different countries at present. The medical device regulation of the US, European region, China, Japan, is more stringent and advanced. In India, the Government has come out with medical device regulation in 2017 for manufacturing companies. These are regularly updated based on the western world. But still, Indian regulation is not stringent as some of the medical devices are still notified as drugs to cap price regulation. This paper studies the current scenario in India with other foreign countries regarding the regulations of medical devices. It concludes that we cannot accept any medical device as it is accepted elsewhere. The acceptance must be from the Indian Government; trials must be conducted in India and must be notified and made public for any damages, recalled action. This will help our local manufacturers compete other manufacturers worldwide, create more jobs and economic growth based on the Make in India concept.","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"167-170"},"PeriodicalIF":0.0,"publicationDate":"2021-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49653950","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

NEW 1,3,4-OXADIAZOLE BASED SCHIFF BASE DERIVATIVES: SYNTHESIS, CHARACTERIZATION AND ANTIBACTERIAL ACTIVITY ALONG WITH IN SILICO STUDIES 新的1,3,4-恶二唑基希夫碱衍生物:合成、表征和抗菌活性与硅研究

European Chemical Bulletin Pub Date : 2021-01-12 DOI: 10.17628/ECB.2021.10.139-146

J. Lalpara, S. Hadiyal, J. Dhalani, G. Dubal

引用次数: 0

SYNTHESIS OF (Z)-N'-(PHENYL(PYRIDIN-2-YL)METHYLENE)-NICOTINOHYDRAZIDE: STRUCTURAL CHARACTERIZATION AND ANTIOXIDANT ACTIVITY SCREENING （Z）-N'-（苯基（吡啶-2-基）亚甲基）-烟酰肼的合成：结构表征和抗氧化活性筛选

European Chemical Bulletin Pub Date : 2021-01-10 DOI: 10.17628/ECB.2021.10.134-138

A. Gueye, Papa Sambra Camara, F. Faye, A. Gaye, F. Tamboura, N. Gruber, M. Gaye

{"title":"SYNTHESIS OF (Z)-N'-(PHENYL(PYRIDIN-2-YL)METHYLENE)-NICOTINOHYDRAZIDE: STRUCTURAL CHARACTERIZATION AND ANTIOXIDANT ACTIVITY SCREENING","authors":"A. Gueye, Papa Sambra Camara, F. Faye, A. Gaye, F. Tamboura, N. Gruber, M. Gaye","doi":"10.17628/ECB.2021.10.134-138","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.134-138","url":null,"abstract":"Asymmetrical ligand ( Z )- N '-(phenyl(pyridin-2-yl)methylene)nicotinohydrazide ( I ) was synthesized from the condensation of nicotinic acid hydrazide with 2-benzoylpyridine. The compound was characterized by physicochemical analyses, elemental analysis, FTIR, 1 H and 13 C NMR spectroscopy techniques. The structure of the compound was determined by a single-crystal X-ray diffraction study. The ligand crystallizes in the triclinic space group P-1 with the following unit cell parameters: a = 8.2699 (11) A, b = 8.6514 (8) A, c = 11.583 (11) A, a = 91.308 (3)°, b = 94.155 (5)°, g = 109.008 (4)°, V = 755.17 (14) A 3 , Z = 2, R 1 = 0.050, wR 2 = 0.145. The carbonohydrazone moiety of the molecule is slightly twisted as reflected by the torsion angles values of -1.2 (2)° [O1—C13—N3—N2]. The dihedral angle between the mean planes of the pyridine rings is 11.799 (9)°. The crystal packing of compound ( I ) is stabilized by intramolecular N(carbohydrazide)–H···N(pyridine) and intermolecular C(phenyl)–H···O(amide) and C(phenyl)–H···N(hydrazino) hydrogen bonds, leading to the formation of sheets parallel to ac plane. The compound screened for antioxidant activity showed variable DPPH inhibition value for different concentrations of DPPH solution.","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"134-138"},"PeriodicalIF":0.0,"publicationDate":"2021-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43800280","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

HEAVY METALS LEACHING CHARACTERISTICS FROM COAL FLY ASH OF THREE THERMAL POWER PLANTS AND ITS ADVERSE EFFECTS ON ENVIRONMENT 三个火电厂飞灰重金属浸出特征及其对环境的不利影响

European Chemical Bulletin Pub Date : 2021-01-09 DOI: 10.17628/ECB.2021.10.114-122

Shyorai Singh, N. Singh, R. Rani

引用次数: 1

RECENT TRENDS IN CONVERSION OF C6-SUGARS INTO VALUE-ADDED CHEMICALS OVER SOLID CATALYSTS 利用固体催化剂将c6 -糖转化为增值化学品的最新趋势

European Chemical Bulletin Pub Date : 2021-01-03 DOI: 10.17628/ECB.2021.10.80-84

Sonal Gupta, R. Jain, Deepti Goyal

引用次数: 1

Novel 1,2,3-triazole-1,4-dihydropyridine-3,5-dicarbonitrile derivatives: synthesis and antibacterial evaluation 新型1,2,3-三唑-1,4-二氢吡啶-3,5-二腈衍生物:合成及抗菌评价

European Chemical Bulletin Pub Date : 2021-01-01 DOI: 10.17628/ecb.2021.10.21-34

Bhagwati Gauni, Krunal Mehariya, Anamik Shah, S. Duggirala

引用次数: 2

Synthesis and characterization of some distyryl-derivatives for agricultural uses 一些农用二芳基衍生物的合成与表征

European Chemical Bulletin Pub Date : 2021-01-01 DOI: 10.17628/ecb.2021.10.35-38

S. A. Abdel-Raheem, A. El-Dean, R. Hassanien, M. El-Sayed, Aly A. Abd-Ella

引用次数: 19

Quality control parameters of prickles of Bombax ceiba Linn. 棉铃草皮的质量控制参数。

European Chemical Bulletin Pub Date : 2021-01-01 DOI: 10.17628/ecb.2021.10.39-45

V. Savalia, D. Pandya, N. Sheth

{"title":"Quality control parameters of prickles of Bombax ceiba Linn.","authors":"V. Savalia, D. Pandya, N. Sheth","doi":"10.17628/ecb.2021.10.39-45","DOIUrl":"https://doi.org/10.17628/ecb.2021.10.39-45","url":null,"abstract":"Bombax ceiba Linn. is a deciduous tree known as Red silk cotton tree. Bombax ceiba stem, stem bark and prickle are used for the treatment of rheumatism, swellings, asthma and inflammation of the legs. The stem bark of Bombax ceiba is official in the ayurvedic Pharmacopoeia of India recommends its use in acne. Prickles are also used and recommended in anti-acne marketed formulation. However, limited work was carried out on the prickle toward establishing quality control parameters. Studies were therefore carried out to determine the phytochemical and pharmacognostic profile of prickle of Bombax ceiba Linn. The study, including determination of macroscopic, microscopic characters, ash values, extractive values, loss on drying, phytochemical screening, total phenolic content, TLC and HPTLC fingerprinting were carried out. Successive extracts were prepared using soxhlet extraction. The phytochemical analysis of extracts revealed the presence of tannin, saponin, phenol, carbohydrate, steroids, triterpenoids and flavonoids. Total phenolic and tannin content of methanol extract was found 327.78±1.09mg GAE/gm equivalent and 4.98±0.22%w/w, respectively. The mobile phase showing distinct spots in TLC was found in Toluene: Ethyl acetate (9.5:0.5) and (9:1) for petroleum ether and methanol extracts, respectively. HPTLC fingerprinting shows 8 & 3 peaks at 366nm for petroleum ether and methanol extract, respectively.","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67698056","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

Calculation of Abraham model L-descriptor and standard molar enthalpies of vaporization for linear C7-C14 alkynes from gas chromatographic retention index data 根据气相色谱保留指数数据计算线性C7-C14炔的Abraham模型l -描述符和标准摩尔蒸发焓

European Chemical Bulletin Pub Date : 2021-01-01 DOI: 10.17628/ecb.2021.10.46-57

N. Shanmugam, Shrika Eddula, W. Acree, M. Abraham

引用次数: 3