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PENGARUH PERENDAMAN PASIR MALELO DENGAN HN03 TERHADAP EFISIENSI PENJERAPAN KROMIUM Sulastri, Siti; Kristianingrum, Susila; Arianingrum, Retno
Jurnal Penelitian Saintek Vol 9, No 1 (2004): April 2004
Publisher : Jurnal Penelitian Saintek

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Abstract

The  objective   of  this  study   was  to  investigate    the  effect  of  soaking nitrate  acid  of Malelo  sand  to adsorption   efficiency   of chromium  (Cr). The Malelo  sand  was prepared   by soaking   in nitric  acid with variation of  concentration     were   17,5:  35  and   70%  for    24  hours   at  room temperature.    The  adsorption   efficiency   of  chromium   was  determined based  on concentration    of chromium   residue   after  adsorption.   which measured  using Atomic Absorption  Spectrophotometer    (AAS). The characterization    of Malelo  sand  determined   using  FTIR  and XRD.  The result  indicated  that the mean  ofadsorption    efficiency   of chromium  on Malelo   sand   without   preparation    and  soaking   in  nitrate   acid  with variation   concentration    17.5:  35 and  70%  were  91,36:  92,40:  92,72 and 94,004%  respectively.Key   words:    soaking,     Malelo    sand.    nitrate    acid.    efficiency     of adsorption,   and Chromium
PENGARUH pH PADA ADSORPSI KATION UNSUR HARA Ca2+ DAN K+ OLEH SILIKA DARI LUMPUR LAPINDO Ikhsan, Jaslin; Sulastri, Siti; Priyambodo, Erfan
Jurnal Penelitian Saintek Vol 20, No 1 (2015): April 2015
Publisher : Jurnal Penelitian Saintek

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Abstract

Tujuan penelitian ini adalah mengetahui pengaruh pH pada adsorpsi kation unsur hara Ca2+ dan K+ silika lumpur lapindo hasil pemisahan. Data dikumpulkan melalui eksperimen adsorpsi, dimana 3 gram silika hasil pemisahan lumpur Lapindo dilarutkan dalam 300 mL larutan yang berisi Ca2+ atau K+ 0,0001 M atau 0,001 M, dan diaduk selama waktu kesetim- bangan, yaitu 2 jam. pH suspensi divariasi dan dibiarkan 2 jam, sampel diambil dan diukur konsentrasi kation bebas dalam larutan dengan Atomic Absorption Spectrophotometry un- tuk Ca2+  dan Flame Atomic Emission Spectroscopy untuk K+. Variasi pH dilakukan dari 3 hingga 10 dengan suhu dan waktu kontak dipertahankan 30 oC dan 2 jam. Hasil penelitian menunjukkan kedua kation tersebut terikat dengan pola sigmoid, membesar seiring dengan meningkatnya harga pH. Pada semua harga pH yang teramati, Ca2+dan K+. terikat dalam jumlah yang tidak berbeda secara signifikan. Sorben silika dalam air membentuk silanol (SiOH) yang terprotonasi pada pH rendah, membentuk SiOH + dan terdeprotonasi pada pH tinggi menjadi SiO¯ . Baik Ca2+ maupun K+. diikat melalui reaksi pertukaran kation dimana Ca2+  atau K+. menggantikan proton H+ dari gugus -OH silanol membentuk [SiO(CaOH)] untuk Ca2+, dan [SiO-K] untuk K+.Kata kunci: adsorpsi;Ca2+; K+.; pH; silika
PEMANFAATAN LIMBAH KULIT lKAN MENJADI KERUPUK (RAMBAK) Kristianingrum, Susila; Arianingrum, Retno; Sulastri, Siti
INOTEK Vol 10, No 1 (2006): Februari 2006
Publisher : LPM UNY

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Abstract

This   program   of  implementation    Science,   Technology    and  Arts (Ipteks)  intended  to  introduce  and  give  skill  training  about  making  chips from  fish skins (kerupuk  kulit  ikan)  to the community   in Tanjungsari   Sub­ district,  Gunungkidul   Regency.  In this  area,  there  are  plenty  of  fish  skins that can pollute  and disturb  the beauty  of the environment.   Producing  chips from fish skins can reduce the pollutant  and increase  the value of fish skins.The  program   was  held  by  giving   information   and  demonstration methods  in two locations  with different  participants.   The first program  was held  in Tanjungsari  Sub-district   Hall  for 35 participants,   who  were  village chiefs    wives.   The   second   program   was   held   at  Baron   beach   hall   to accommodate  20 participants,  consisting  of fishermens   wives and members of youth group.The questionnaire  result  of first program  showed  that  85.71 % of theparticipants   considered  this  program  profitable   and  74.28%  said  that  they were  interested  to  develop  business  in  producing   fish  skin  chips.  All  the participants   (100%)   of  the  second   program   said  that   the  program   was profitable  and  they  were  interested  to  develop   business   in producing   fish skin  chips.  Thus,  the  program   succeeded   in  broadening   the  participants perspectives  and  skills  on how  to make  use  of   waste,  turning  it into fish skin  chips  and  to  motivate  the  participants   to  develop   business  using  the knowledge  and skills already obtained.Key words:fish skin waste.fish skin drips
THE IMPLEMENTATION OF DEMONSTRATION TECHNIQUE TO TEACH SPEAKING IN PROCEDURE TEXT OF THE X GRADERS OF SMAN 1 MAGETAN IN THE ACADEMIC YEAR 2013/2014 Sulastri, Siti
English Teaching Journal Vol 3, No 2 (2015)
Publisher : English Teaching Journal

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Abstract

Learning to speak is not easy especially for the learners. The teacher always finds that the students or the learners are often reluctant because they are shy and difficult to express themselves in front of  other people, especially when they are being asked to give personal information or opinions. Besides they are rarely given a chance to practice their speaking. Because of less in practicing to speak English or even never, students are finally afraid of speaking. They are afraid of making mistakes, especially in grammar and pronounciation. To make the students have motivation in speaking, the teacher should be able to facilitate and encourage the students in order to speak English as much as possible. Therefore the teacher needs to create an atmosphere where the students will feel free to use language they learning, so the learners will not get bored in learning English. There were three steps in the implementation of demonstration technique, pre activity, while activity and post activity. In pre activity, the teacher always opened the lesson through greeting, asking the student’ condition and checking the attendance list. The teacher also prepared the materials every meeting. Then the started to introduce the material and explained the demonstration technique. In whilst activity, the teacher always asked the students to bring things that they would present in the following day. Then the teacher asked the students to discuss the steps with their friends how to make something before they started to demonstrate their properties. After discussing, the students began to demonstrate their properties while practicing it directly in front of the class. After demonstrating, other students began to respond their friend’s presentation. In post activity, the teacher observed the students activity and controlled their interaction during teaching learning process. She always gave reward to the best performance students, and corrected the students mistakes.After the students had the implementation of demonstration technique, their speaking ability showed that 75 % scores were increasing. So demonstration technique gave positive effect to the students’ speaking ability. And it can be said that demonstration technique was interesting for the students in learning  speaking.The student’ response toward the implementation of demonstration technique in the process of teaching speaking were good. It can be showed that most of them stated that the use of this technique were really interesting and made the students more active in class. They also agreed that it could help them practice speaking English bravely. It was because the teacher chose appropriate topics selected which was related to the students’ interest and daily lives.
Peran Profesionalisme Guru Pendidikan Agama Islam dalam Peningkatan Mutu Sekolah (Studi di SMK Bhakti Anindya, SMKN 8 dan SMK Tiara Aksara Kota Tangerang Banten) Fauzi, Anis; Sulastri, Siti
AT-TURATS Vol 10, No 1 (2016)
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan (FTIK) IAIN Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24260/at-turats.v10i1.489

Abstract

The primary issue in this study is how the level of professionalism of teachers of Islamic education in improving the quality of school at SMK (vocational high school) Bhakti Anindya, SMKN 8, and SMK Tiara Angkasa of Tangerang is. This study aims to find the level of professionalism of teachers of Islamic education of SMK Bhakti Anindya, SMKN 8, and SMK Tiara Angkasa of Tangerang in overcoming barriers to school’s quality. The purpose of this study is to know the importance of Islamic Education Teacher’s Professionalism in improving the quality of learning. This study employs a combination of design/model of sequential exploratory, with its main steps: In the first stage, the study conducts a qualitative method to determine the setting of study that has problem. In the second stage, this study employs quantitative methods to test the hypothesis obtained in the first stage. The population of this study is 150 students with a 5% error, so the number of the sample is 105 students. The sampling collection is conducted by using proportional random sampling. The instrument of this study is collected through questionnaires that are arranged according to the Likert scale model. The results reveal that there are positive contributions from the Professionalism of Teacher of Islamic Education to the quality of the school. This is shown by the determination coefficient of 44.89%, which provide simple information that 44.89% of school quality is determined by the Islamic Education Teacher’s Professionalism. Thus it can be concluded that the higher the professionalism of teachers of Islamic education, the higher the quality of schools.
THE PRINCIPLE OF THE USEFULNESS OF A WAQF OBJECT IN THE PERSPECTIVE OF NAZHIR PROFESSIONALISM BASED ON LAW NUMBER 41 YEAR 2004 ABOUT WAQF IN SUB-DISTRICT CIAWI AND SUB-DISTRICT MEGAMENDUNG BOGOR Sulastri, Siti; Yumarni, Ani; Sihotang, Sudiman
DE'RECHTSSTAAT Vol 4, No 2 (2018): JURNAL HUKUM "DE'RECHTSSTAAT"
Publisher : Fakultas Hukum Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.048 KB) | DOI: 10.30997/jhd.v4i2.1529

Abstract

Realizing the expediency principle of waqf property, one of the efforts that be able to conducted is selecting and appointing nazhir that is conform the criteria and standards of professional nazhir competence. The purpose of study is to determine the criteria and professional nazhir competence in order to realize the expediency principle to assets of waqf in Ciawi and Megamendung district as well as to know the legal effect on waqf asset if nazhir not professional in managing and developing it. The approach method used in this research is sociological juridical (empirical), the law as a symptom of society, as a social institution or behavior that is pattern. Technical data collection used is through observation method, and interview method (interview). Based on results of research conducted by the author that the criteria and standards of professional nazhir competence is proficient, reasonable, law waqf understanding both Syariah and law, behaved as has been exemplified by the prophet Muhammad SAW namely sidiq, amanah, fathanah, tabligh, and possess skills and creativity not only in the field of syariah but law field, management and business. The legal consequences of the unmanaged asset of waqf in accordance to the legislation are the objects of waqf being displaced so that the management and its development can be taken over by the Badan Wakaf Indonesia, accordance to applicable laws and regulations
THE PRINCIPLE OF THE USEFULNESS OF A WAQF OBJECT IN THE PERSPECTIVE OF NAZHIR PROFESSIONALISM BASED ON LAW NUMBER 41 YEAR 2004 ABOUT WAQF IN SUB-DISTRICT CIAWI AND SUB-DISTRICT MEGAMENDUNG BOGOR Sulastri, Siti; Yumarni, Ani; Sihotang, Sudiman
DERECHTSSTAAT Vol 4, No 2 (2018): JURNAL HUKUM DERECHTSSTAAT
Publisher : Fakultas Hukum Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/jhd.v4i2.1529

Abstract

Realizing the expediency principle of waqf property, one of the efforts that be able to conducted is selecting and appointing nazhir that is conform the criteria and standards of professional nazhir competence. The purpose of study is to determine the criteria and professional nazhir competence in order to realize the expediency principle to assets of waqf in Ciawi and Megamendung district as well as to know the legal effect on waqf asset if nazhir not professional in managing and developing it. The approach method used in this research is sociological juridical (empirical), the law as a symptom of society, as a social institution or behavior that is pattern. Technical data collection used is through observation method, and interview method (interview). Based on results of research conducted by the author that the criteria and standards of professional nazhir competence is proficient, reasonable, law waqf understanding both Syariah and law, behaved as has been exemplified by the prophet Muhammad SAW namely sidiq, amanah, fathanah, tabligh, and possess skills and creativity not only in the field of syariah but law field, management and business. The legal consequences of the unmanaged asset of waqf in accordance to the legislation are the objects of waqf being displaced so that the management and its development can be taken over by the Badan Wakaf Indonesia, accordance to applicable laws and regulations.
PENGARUH MINUMAN YOGURT TERHADAP pH SALIVA SISWA SEKOLAH DASAR Sulastri, Siti
Jurnal Kesehatan Gigi Vol 5, No 1 (2018): Juni 2018
Publisher : Jurusan Keperawatan Gigi, Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (149.123 KB) | DOI: 10.31983/jkg.v5i1.3596

Abstract

TITLETHE EFFECT OF DRINKING YOGURT ON THE pH SALIVA OF ELEMENTARY SCHOOL STUDENTSABSTRACT Saliva is one of the factors that influence the process of caries because saliva always wet the teeth so that affect the environment in the oral cavity. Saliva works not only to help in chewing food but also serves as a protector. Children often consume foods and beverages containing carbohydrates, so the caries-causing bacteria in the oral cavity will produce acids that cause demineralization. Among feeding periods, saliva will work to neutralize acids and help the process of remineralization. Consuming yogurt can be an effort to prevent caries in children. Yogurt contains calcium, which, if maintained longer in saliva, is expected to help with remineralization. The purpose of this study was to determine the effect of drinking yogurt on saliva pH. This research is a true experiment with the design of Pre and Post Test With Control Group Design. The population is all students of class I to class V Elementary School of Argomulyo, Sedayu, Bantul. The sample in this study amounted to 100 students by using random sampling technique. The data analysis used is the Wilcoxon test. The results showed that before drinking yogurt pH saliva 6,80, after drinking yogurt pH saliva 7.44 with difference 0,64. Drinking yogurt can increase saliva pH so that there is the influence of drinking yogurt to pH saliva of Elementary School Student of Argomulyo Sedayu Bantul Yogyakarta (p = 0,005). Keywords : yogurt, saliva pH___________________________________________________________*) Jurusan Keperawatan Gigi Poltekkes Kemenkes Yogyakarta  * : sitislstr7@gmail.com
PENGARUH MENGKONSUMSI MINUMAN MADU TERHADAP TINGKAT KEASAMAN PH SALIVA ANAK SEKOLAH DASAR Purwati, Dwi Eni; Sulastri, Siti
Jurnal Kesehatan Gigi Vol 3, No 2 (2016): Desember 2016
Publisher : Jurusan Keperawatan Gigi, Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (135.792 KB) | DOI: 10.31983/jkg.v3i2.1777

Abstract

TITLEThe effect of honey water consumption to acidity level of pH saliva in elementary school childrenABSTRACTCommunities can take advantage of traditional medicine such as honey as an alternative medicine to reduce the formation of dental plaque. Honey containing antibiotics as antibacterial and antiseptic keeping the wound. Natural honey contains a lot of enzymes, that is very complex of protein molecul, produced by living cells and have function as catalyst, which is : The speed reaction modifier substance in the chemical process. The process happened within the body of every living beings. Based on preliminary studies to 10 students saliva examination average student salivary pH less than 7 below normal, and students have an average of dental caries 2. Research objective is to know the average level of acidity pH of saliva before and after drinking honey.Quasi-Experimental research type, research using pretest-posttest design With Control Group. Total sample of 60 students, by means of random sampling. Test analysis by T-Test.PH study results before and after drinking the honey of significance is p = 0.05 <0.05. The conclusion of this study was there was the influence of drink honey to salivary pH values. Keywords : drink honey, the pH of saliva
The implementation of pictures media to improve paragraph writing skill Sulastri, Siti
English Teaching Journal : A Journal of English Literature, Language and Education Vol 7, No 1 (2019)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/etj.v7i1.4543

Abstract

The main objectives of the research are: (1) to identify whether pictures can improve students’ paragraph writing skill for the tenth graders of Senior High School in SMAN 1 Magetan; (2) to identify the students’s motivation when the pictures are used to teach paragraph writing skill for the tenth graders of Senior High School in SMAN 1 Magetan in academic year 2018/2019. The Research was carried out at SMAN 1 Magetan, East Java, in second semester from January 2019 to May 2019. The subjects of the research are 34 students of grade X. MIPA -1 consisting of 14 boys and 20 girls. The data were obtained from several techniques: test, observation, interview, questioners, and document analysis. To analyze the qualitative data, I used interactive model; while to analyze quantitative data, I applied a descriptive statistics. It is done by comparing the mean of pre-test and post-test. There are some findings of the research which include: pictures can improve students’ paragraph writing skill for the tenth graders of Senior High School in SMAN 1 Magetan. The improvements of paragraph writing skill comprise: (1) writing topic sentence; (2) writing supporting sentences; and (3) using correct grammar and cohesive devices (conjunctions). In addition, the students’ motivation is better when the pictures are used to teach paragraph writing skill for the tenth graders of Senior High School in SMAN 1 Magetan. Based on the result of the research, it can be concluded that applying pictures as media can improve students’ paragraph writing. Therefore, it is recommended that the teachers can use pictures as an effective media to improve the students’ paragraph writing skill.