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Growth-controlled synthesis of polymer-coated colloidal-gold nanoparticles using electrospray-based chemical reduction

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Particuology 2021年第4期19卷 72-81页

作者： Mohamed Hasaan Hussain Noor Fitrah Abu Bakar Kim-Fatt Low Ana Najwa Mustapa fatmawati Adam Mohd Nazli Naim I.Wuled Lenggoroe Faculty of Chemical Engineering Universiti Teknologi MARAShah AlamSelangor 40450Malaysia Faculty of Applied Sciences Universiti Teknologi MARAPerak BranchTapah CampusTapah RoadPerak 35400Malaysia Faculty of Chemical and Process Engineering Technology Universiti Malaysia PahangLebuh Raya Tun RazakGambangPahang 26300Malaysia Department of Process and Food Engineering Faculty of EngineeringUniversiti Putra MalaysiaSerdangSelangor 43400Malaysia Graduate School of Bio-Applications and Systems Engineering Tokyo University of Agriculture and TechnologyNaka Cho2-24-16KoganeiTokyo 184-8588Japan Department Chemical of Engineering Tokyo University of Agriculture and TechnologyNaka Cho2-24-16KoganeiTokyo 184-8588Japan

In this study,the controlled nucleation and growth of gold nanoparticles(GNPs)were investigated using a self-repelled mist in a liquid chemical reaction *** electrospray-based chemical reduction method was conducted in the aqueous region and at room temperature to synthesize the polymeric-stabilized gold *** electrospray technique was used to atomize a hydrogen tetrachloraurate(III)(HAuCl4)precursor solution into electrostatically charged *** atomized droplets were dispersed in an aqueous reaction bath containing L-ascorbic acid as a reducing agent and polyvinylpyrrolidone(PVP)as a *** effect of the electrospray parameters,specifically the flow rate and electrospray droplet size,as well as the reaction conditions such as the concentration of reactants,pH,and stabilizer(PVP),were *** mean diameter of the GNPs increased from around 4 to 9 nm with an increase in the electrospray flow rate,droplet size,and current passing through the electrospray *** and monodispersed GNPs were synthesized at a relatively high flow rate of 2 mL/h and a moderate concentration of 2 mM of precursor *** smallest-sized GNP with a high monodispersity was obtained in the reaction bath at a high pH of 10.5 and in the presence of *** is expected that continuous and mass production of the engineered GNPs and other noble metal nanoparticles could be established for scaling up nanoparticle production via the proposed electrospray-based chemical reduction method.

关键词： Electrospray Gold nanoparticles Chemical reduction method L-ascorbic acid PVP Aqueous medium

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Hepatoprotective and antioxidant activity of pentagamavunon-0 against carbon tetrachloride-induced hepatic injury in rats

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Asian Pacific Journal of Tropical Medicine 2013年第6期6卷 438-442页

作者： Arief Nurrochmad Supardjan Amir Margono Sardjiman Arief Rahman Hakim Ernawati Erna Kurniawati Erva fatmawati Department of Pharmacology and Clinical Pharmacy Faculty of PharmacyGadjah Mada UniversitySekip Utara Yogyakarta-55281Indonesia Curcumin Research Center Faculty of PharmacyCadjah Mada UniversitySekip Utara Yogyakarta-55281Indonesia

Objective:To investigate the hepatoproteetivc ami antioxidant activity of pentagamavunon-0(PGV-0) against CCl-4-induced hepatic injury in ***:The groups of animals were administered with PGV-0 at die doses 2.5.5,10,and 20 mg/kg b.w.,*** in a day for 6 days and at day 7 the animals were administrated with carbon tetrachloride(CClj)(20%,2 ml/kg *** liquid paraffin dp.).The effect of PGV-0 on serum transaminase(SGPT),alkaline phosphates(ALP and total bilirubin were determined in CCl-4-indueed hepatotoxicity in ***,the effects of PGV-0 on glutathione(GSU) content,cutalase(CAT) and NO free radical scavenging activity also were ***:The results demonstrated that PCV-0 significantly reduced the activity of SGPT,serum ALP and total bilirubin in CCl-4 induced rat ***-0 has effect on the antioxidant and free radical defense *** prevented the depletion level of GSH and decrease activity of CAT in CCl-4-induced liver injury in ***-0 also demonstrated the free radical scavenger effects on NO free radical scavenging activity with ES value of 32.32μM. Convulsion:All of our findings suggests that PGV-0 could protect the liver cells from CCl-4- induced liver damages and the mechanism may through the antioxidative effect of PGV-0 to prevent the accumulation of free radicals and protect the liver damage.

关键词： Hepatoprotective Antioxidant Pentagamavunon-0 Carbon tetrachloride Rats

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Steady State and Dynamic of Gluconic Acid Production by Aspergillus Niger

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Journal of Chemistry and Chemical Engineering 2010年第7期4卷 39-45页

作者： Akbarningrum fatmawati Agustriyanto Rudy Department of Chemical Engineering Surabaya University Surabaya 60271 Indonesia

Batch and continuous fermentation ofgluconic acid production has been studied. The kinetic parameters of the fermentation process were determined from the batch experimental data. The continuous fermentation was modeled to be carried out in a stirred tank reactor. The effect of hydraulic retention time on the steady state continuous fermentation process of glucose by Aspergillus niger to produce gluconic acid was investigated. The result showed that increasing the hydraulic retention time caused the cell amount and gluconic acid concentration at the outlet stream increased but the glucose concentration at the outlet stream decreased. The steady state simulation result was useful for fermenter size determination. Dynamic behaviour of gluconic acid production through fermentation by Aspergillus niger was also studied for a fermenter with 24 h hydraulic retention time. Applying step change of inlet substrate concentration resulted in first order response of cell, substrate and product concentration with all having positive gain. On the other hand, applying step change of inlet cell concentration has resulted in positive gain for cell and product concentration and negative gain for substrate concentration with first order response for all those three parameters.

关键词： Gluconic acid continuous fermentation modeling dynamic Aspergillus niger.

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Students Response to Hate Speech

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Sociology Study 2021年第6期11卷 246-258页

作者： Yohanes Bahari fatmawati Salvius Seko University of Tanjungpura PontianakIndonesia

The general problem of this research was how students respond to hate *** purpose of the study was to obtain an overview of(1)perceptions;(2)attitudes;and(3)student actions/participation towards hate *** research approach used was quantitative and descriptive with survey *** population of this study was all the administrators of the student executive board in UNTAN,IAIN,and IKIP PGRI Pontianak totaling 162 *** number of research samples was 115 students determined by Slovin *** respondents were choosen *** collection used a *** analysis used percentage quantitative descriptive analysis *** general conclusion of the study shows that student responses to hate speech are *** conclusions of the study are:(1)student perceptions(knowledge)of hate speech are on average 78.26%know and 21.74%do not know about the utterances of hatred;(2)student attitudes towards hate speech are on average 78.14%students do not agree with hate speech and 21.86%agree;and(3)student actions or participation in hate speech are on average 78.51%students never take acts in hate speech and 21.49%ever.

关键词： hate speech student response student executive board

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汉语副词“都”和印尼语对应词的对比及偏误分析

汉语副词“都”和印尼语对应词的对比及偏误分析

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作者： EKA fatmawati(方小静) 福建师范大学

学位级别：硕士

副词“都”是汉语语法当中的高频副词之一,在口语和书面语中都非常常用。副词“都”本身在语义、结构、语用、常用句式等方面具有一定的复杂性,因此在汉语作为目的语的学习和使用过程中是一个难题,偏误的出现率也比较高,印尼学生也不例... 详细信息

副词“都”是汉语语法当中的高频副词之一,在口语和书面语中都非常常用。副词“都”本身在语义、结构、语用、常用句式等方面具有一定的复杂性,因此在汉语作为目的语的学习和使用过程中是一个难题,偏误的出现率也比较高,印尼学生也不例外。为了进一步了解印尼汉语学习者学习使用“都”的情况,本文首先对表范围副词和语气副词的“都”进行辨析,然后将它们与印尼语的对应词进行比较并找出两者的异同之处。此外,笔者通过自身学习汉语的经验总结、身边印尼学生学习使用“都”的情况观察、印尼学生的作文和语料库偏误例句搜集,在分析偏误的基础上设计了具有针对性的调查问卷以进一步获得大量的偏误实例。根据调查结果和偏误分析,文章进一步归纳偏误类型、分析偏误来源,并提出相应教学策略。

关键词：副词 “都” 范围副词语气副词印尼学生偏误分析

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印尼留学生习得汉语含有人体部位成语时的偏误研究

印尼留学生习得汉语含有人体部位成语时的偏误研究

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作者：李紫辰（fatmawati）南昌大学

学位级别：硕士

成语是汉语词汇中一部分定型的词组或短语,它有固定的结构形式和固定的说法。它不仅有本义,还有很多引申意义。比如成语的比喻义,它是由本义引申而来。成语由固定短语发展而来,它是人们在长期的语言使用中锤炼而成的。成语是世界上每个... 详细信息

成语是汉语词汇中一部分定型的词组或短语,它有固定的结构形式和固定的说法。它不仅有本义,还有很多引申意义。比如成语的比喻义,它是由本义引申而来。成语由固定短语发展而来,它是人们在长期的语言使用中锤炼而成的。成语是世界上每个国家都喜欢用的语言材料,而且不同的国家用法各不相同。虽然有不少学者对成语对比方面的研究比较全面深刻,但是在汉语和印尼语中的人体部位成语对比方面的研究非常薄弱,文化蕴涵方面的研究就更少了。所以本文试图在先前学者研究的基础上探讨汉语和印尼语中的人体部位成语对比研究,并以此为依据,初步收集含有人体部位的成语,增进学者对汉印尼文化的了解,以便可以运用到教学过程当中,同时也可以为学生提高学习效率提供参考。本文研究的目的是分析汉语与印尼语中身体部位成语的异同。为中国和印度尼西亚的文化语言学习创建了一个很好的平台。从语义来看,成语与自由词组之间有区别。成语具有整体性,也就是说成语的每个组成成分的意义不能分割理解。一般成语中的每个单词已经丧失其语义的独立性,所以要将它们的意义结合起来表达一个整体的意义。本文首先是从语义和句法的角度对汉语中描写人体部位的成语进行分析,然后对汉语和印尼语中描写人体部位的成语进行对比分析,再通过对印尼留学生习得汉语的人体部位成语的偏误进行分析,进一步提出教学建议和措施。

关键词：汉印人体部位成语对比分析偏误分析

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