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PROSIDING SEMINAR KIMIA
Published by Universitas Mulawarman
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Chemistry
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Articles 50 Documents
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Search results for , issue "PROCEEDING OF INTERNATIONAL CONFERENCE 2015" : 50 Documents clear
PRACTICALITY ASSESSMENT DEVICE DEVELOPMENT OF LEARNING MODEL BASED METACOGNITIVE SKILL Ijirana -; Suyono -; Sri Poedjiastoeti
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
Publisher : PROSIDING SEMINAR KIMIA

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Practicality assessment device is developed according to PBKM model which has been rated valid by the experts. The aim of the research is to gain the valid PBKM model of the practility assessment device. The device consists of observation sheet of the applied model syntax, unit of learning program, and student’s worksheet. The valid score of the developed device is gained by giving the worksheet to five experts. The resultindicated that the whole evaluation aspects in the observation sheet of the applied model syntax which consist of direction to use the worksheet, the observation sheet content, and the used language gain the high score of validity. The validity of the whole evaluation aspects for the unit of learning program has been evaluated for high score by the experts, while the student’s activity sheet has been evaluated varies between high and very high. The result indicated the experts stated that the practicality score sheet which is developed from PBKM model is well-used in the implementation of PBKM model.
ANALYSIS OF USING CHEMICAL LABORATORY IN SMA STATE EAST KALIMANTAN Muh. Amir M
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
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The aims of this research is to described the use of instructional media and chemical laboratory chemistry on high school students in East Kalimantan. The method that used in this researchis a qualitative approach because it used the data source directly as a scientific background. The subject of this study are; 1) the principal, 2) vice curriculum 3) teachers 4) students, who knowed and can be trusted to be the source of the data and determine the depth of the problems study. The source of the data is the Education Unit Level High School in East Kalimantan. The resulted of laboratory research to the design aspects related with layout, number and arrangement of space inside the laboratory has good criteria with the percentage is 74.39%. Administrative aspects indicated have obstacles in that and this is in accordance to the results of interviews and direct observation, with percentage is 66.30%. Lab administration has good enough criteria differently with other aspects that reached a percentage is over 70%. Practical aspects of the management in the provision relatedis how the course of events before and after the practicum takes place based on the supporting data reached a percentage is 79.94%. From this percentage showed that practicum implementation has been very ready. Completed aspects of tools and materials, which reached up to 90% with very good prepared of criteria, it is in accordance with the observational data that showed the tool and the material in the chemical laboratory has been standardized school laboraotrium. Thus, the implementation of the learning process average teacher in every teaching chemistry using the media as a supported of teaching and learning so that students are very enthusiastic, especially increasing the activity and motivation during the lesson.
STUDIES OF USE HYDROGEN PEROXIDE (H2O2) OXIDIZING TO REDUCTION CYANIDE LEVEL IN WASTEWATER Muntasir -; M. Sjahrul; Muhammad Zakir; Indah Raya
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
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Has done conducted research studies the use of oxidizing hydrogen peroxide (H2O2) to the reduction of cyanide levels in the wastewater. Parameters measured were the optimum concentration of hydrogen peroxide, pH optimum, optimum contact time between Hydrogen Peroxide with wastewater in reducing the cyanide content. Cyanide obtained from steam distillation of liquid waste and assay using 0.02 N silver nitrate. Variations in the concentration used was 100 ppm, 200 ppm, 300 ppm, 400 ppm and 500 ppm; pH variation is (7, 8, 9, 10 and 11) and the variation of contact time are: 30, 60, 90, 120 and 150 minutes. The results showed early treatment of cyanide content of 50.22% w/w and experienced a reduction after the addition of H2O2 concentration of 100 ppm, 200 ppm, 300 ppm, 400 ppm and 500 ppm; variations in pH is 7, 8, 9, 10 and 11 and the variation of contact time are: 30, 60, 90, 120 and 150 minutes. The optimum treatment is the optimum concentration of H2O2 at 500 ppm with a reduction in levels of 36.40% w/w, pH Optimum pH 8 with reduced levels of 40.91% and an optimum contact time at 60 minutes with a reduction in levels of 37.09% w/w.
PROTOTYPE OF 21st CENTURY ORIENTED COURSE CURRICULUM MODELS ON HIGH LEVEL BOTANY COURSE Herliani -
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
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The curriculum is a set of plans and arrangements regarding the objectives, content and learning materials as well as a way of learning that is used as a guide to achieve certain courses. Learning the 21st century demand a change in the orientation of learning is to master the combination of content knowledge, skills, expertise, and proficiency. The 21st century requires the skills knowledge and understanding among all students. Learning and innovation skills of the 21st century is creativity and innovation, critical thinking and problem solving, communication, and collaboration.Content analysis Model Curriculum oriented courses conducted in the 21st Century: 1) National standards Universities which consists of competency standards, learning content standards, standards of learning and assessment standards of learning, 2) Indonesian National Qualifications Framework which consists of working ability, the ability of knowledge and ability manajereal, 3) Curriculum 2013, which consists of attitudes, knowledge and skills, 4) local wisdom consisting of local knowledge, local skills, and local sources, and 5) 21st century skills which consists of:a) science process skills (formulating the problem, formulating hypotheses, designing experiments, carry out experiments, collect and analyze data, draw conclusions, and communicate), b) thinking skills by using an evaluation tool taxonomy SOLO by classifying the level of ability of students at five levels, namely level prastruktural, unistruktural, multistruktural, rational and extended abstracs, and c) entrepreneurship with elements of self-employed; elements of knowledge, skills element and an element of vigilance.Analysis of the learning experience by using teaching strategies approach Science Process Skills, Problem Based Learning, Enquiry and Cooperative STAD.Products produced teaching Semester Lesson Plan (RPS), Instructional Materials, Student Activity Sheet (MFI) and the Assessment Sheet.The authority to develop or construct effective curriculum appropriate to the circumstances and needs of the region based on the National Education Standards in accordance with Permendikbud number 49 in 2014.
EXTRACTION KINETICS OF SAPPANG WOOD DYES (Caesalpinia sappan Linn) Suryani -
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
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The development of food and beverage processing industry and the limited quantity and quality of natural dyes cause the use of synthetic dyes is increasing. The use of synthetic dyes can be replaced with natural dyes. One alternative that can be used natural dyes are dyes contained in Sappang wood (Caesalpinia sappan Linn.) For that conducted this research with the Ethanol Concentration and Temperature Effect to Extraction Sappang wood dye. The purpose of this study was to determine the effect of ethanol with various concentrations and temperatures as well as get the highest weight of the extract to the extraction of wood dye sappang.The research method used is the extraction of heat by using a set of equipment sokhlet. The treatments consisted of two variables, ethanol with various concentrations (70%, 80%, and 90%) and extraction temperature (60 0C, 70 0C, and 80oC).The results showed that the higher concentration of ethanol and the temperature the higher the percentage by weight of dry extract of Sappang wood dye produced. The highest extraction results obtained at a temperature of 80 ° C and the concentration of 90% by weight of dry extract yield the highest 0.7419 grams and percentages 9:27% and extraction kinetics is 3:24 10-3mol liter-1 s-1.
AN ANALYSIS OF SCIENCE LITERACY SKILL FOR STUDENTS THROUGH GUIDED INQUIRY ON COLLOID SUBJECT AT XI GRADE IN SAMARINDA Iis Intan Widiyowati
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
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The effort in developing science literacy for students can be done through the process of learning science. This process gives changes for students to embrace science completely, instead of teaching science only based on information. Solving the problem of topic discussion will be the design of learning process. Within this process, it needs a model that facilitates students to get a maximum meaningful learning that also involves students’ participation in learning process. Wenning (2007), in his journal Assessing Inquiry Skills as a component of Scientific Literacy,stated that the skill of science literacycan be discovered through measuring students’ inquiry skill. In this topic, inquiry skill means the ability to investigate. The results of the research above show that guided inquiry learning model is able to give positive influence to students’ science literacy.This research used a qualitative descriptive method. The aim of this method was to discover fact, situation, variable and phenomena that encounter while analyzing a research and representing it as the way it was(Notoatmojo, 2012). In this research, the researcher used a descriptive design to delineate the fact or certain population characteristic systematically, factually and accurately in order to know the students skill in science literacy. The data collection technique in this research was a qualitative data gained from written test, interview, and documentation. The average percentage of students' science literacy in three domains (content, context and process) includes in good category. Achievement percentage in the content domain by 71.50%, context domain by 67%and process domain by 84%. It is relevant to Ibrahim & Aspar (2006) that there was a relationship between knowledge and application of science. Thus the high of oneof science literacy domain will affect other science literacy domain. Judging from the aspect of content percentage of 71.50%, which means mastery of the concepts of science (colloidchemistry) is good. Judging from the aspect of student science content,it is obtained achievement by the percentage of 64%. This indicates that colloid chemistry learning has been linked with students' everyday real life.
INTEGRATION OF GREEN CHEMISTRY INTO CHEMISTRY SUBJECT MATTER IN CHEMISTRY DEPARTEMENT Suyono -
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
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This study aimed to know the readiness of chemistry students who will be pioneer and headway booster in terms of environment in their region. The measurement of students’ readinessis based on their understanding of green chemistry concept and orientation of environmental value. The data of student’s measurement used as argumentative reason to integrate green chemistry concept into chemistry subject in chemistry department. First, it was assessed by test of conceptwith certainty of response index. Second, it was assessed by questionnaire. The inferences of this study related to (1) the number of chemistry students who had wrong concept of green chemistry, who did not know the concept of green chemistry and who got misconceptions, (2) the orientation of environmental value of chemistry students was not to be expected yet, the majority were still egocentric, and (3) theintegration of green chemistry approach in the lecture had altered students environmental value to be better, their egocentric value declined while their ecocentric value increased.
THE EFFECT OF VOLTAGE ON THE METAL CONCENTRATION (HG, PB, AND ZN), CONDUCTIVITY AND COLOR ON THE ELECTROCOAGULATION - FLOTATION PROCESS IN A WASTE INCINERATOR LIQUID Merry Anggriani; Bohari Yusuf; Rahmat Gunawan
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
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Have done research about the effect of voltage on the metal concentration (Hg, Pb and Zn), conductivity and color on the electro-coagulation - flotation process in a waste incinerator liquid. The analysis showed that the pH parameters for water Scrubber and Quencher generate percent allowance of up to 20.6119% and 12.0773%, while the parameters of electrical conductivity (EC) for Water Scrubber and Quencher generate percent allowance of up to 12.0782%, and 10, 4213%. Metal parameter Hg for water Scrubber and Quencher generate percent allowance of up to 57.2727% and 77.1144%, then the parameters of metals Pb for water Quencher and Scrubber generate percent allowance of up to 81.0769% and 49.7835%. Metal Zn parameters for water Scrubber and Quencher generate percent allowance of up to 76.6679% and 49.0246% and the color parameters for water Scrubber and Quencher generate percent allowance of up to 46.1538% and 77.5194%.
THE POTENCY OF PROTEIN EXTRACTS FROMCandida albicans AS BIORECEPTOR ON IMMUNOSENSOR FOR DIAGNOSIS OF CANDIDIASIS Masfufatun -; Noer Kumala; Afaf Baktir
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
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Currently diagnosis of candidiasis still usingthe traditional standard blood culture method. The traditional method were less sensitive andtime consuming. The purpose of this research were to develope the more sensitive immunosensor based method, and to examine the potency of C. albicans protein extract as bioreceptor to detect C. albicans and its biofilm in the blood of candidiasis patients.The research methods include: (1) preparation of digestive gland liquid of snail (Achatina fulica); (2) extraction of protein from C. albicans through enzimatis and mechanic methods and (3) analyzing the protein extract as bioreseptor through immunodot assay.The research results showed that the snail enzymes has protein content 1.35 mg/ml and specific activity 1.96 unit/mg. The snail enzyme hydrolyzed the cell wall of C. albicans with and without sonication, produced planktonic extracell protein extract (PEP) and biofilm extracell proteinextract (BEP), planktonic intracell protein extract (PIP), and biofilm intracell protein extract (BIP), with protein content 1.44; 1.29; 1.29 and 1.21 mg/ml respectively. The biofilm intracell protein (BIP) showed antigenic property toward antibody anti-Candida (positive control),giving red spot on imunodot assay. Immunodot assay can distinguish negative control serum (health man) and positive Candidiasis control by using antigen 1 g/l and 50 l serum.
Activity Test Of Ethanol and n-Hexane Fraction Of African Leaves (Vernonia amygdalina Delile) as Antihyperuricemia On Male Mice Induced by Potassium Oksonat Deni Karisnawati; Saibun Sitorus; Chairul Saleh
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
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Antihyperuricemia activity tests have conductedon aethanolandn-hexane fraction Africanleaves (Vernonia amygdalina Delile). Hyperuricemia is a condition in which uric acid levels in the blood increases due to the high consumption of purine converted to uric acid by xanthine oxidase. Antihyperuricemia activity test of ethanolic and n-hexane fraction of African leaves (Vernonia amygdalina Delile) conducted on male white mice with variation in doses of 6, 11 and 22 mg/kg BW and variation of measurement time of 1, 2, 3 and 4 hours after administration of the extract orally. Data were analyzed with ANOVA and continued with Duncan test. Ethanolic fraction 11 mg/kg is the most effective fraction lower uric acid levels by 54.62% compared to alupurinol 300 mg/kg BW which lower uric acid levels by 56.91%. Phytochemical screening showed that the ethanolic fraction of African leaves contains triterpenoids, steroids, phenolics, flavonoids and saponins whereas n-hexane fraction containing alkaloids, steroids and flavonoids. These results show the extracts of African leaves have antihiperurisemia activity.

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