scholarly journals Pengaruh Metode Analisis Tablet Parasetamol Terhadap Nilai Akurasi

2017 ◽  
Vol 1 (1) ◽  
pp. 82
Author(s):  
Vevi Maritha ◽  
Kuncara Nata Waskita
Keyword(s):  
High Accuracy ◽  
Small Degree ◽  
T Test ◽  
Chromophore Group ◽  
Standard Curve ◽  
Spectrophotometric Methods ◽  
Color Changes ◽  
Method Analysis ◽  
Bright Blue ◽  
Better Than

Parasetamol adalah senyawa yang memiliki gugus kromofor sehingga dapat dianalisis menggunakan spektrofotometri. Metode nitrimetri memiliki kelebihan peralatan yang digunakan sederhana, sedangkan spektrofotometri memiliki kelebihan jumlah sampel yang dianalisis sedikit. Nitrimetri dan spektrofotometri adalah metode analisis yang memiliki nilai akurasi yang tinggi untuk analisis parasetamol dalam sediaan tablet. Analisis Parasetamol menggunakan metode nitrimetri dengan cara diambil 20 tablet parasetamol, dihitung rata-ratanya . timbang sejumlah rata-rata tablet masukkan dalam 20 ml larutan HCl : air (1:2), kemudian stirrer selama 20 menit. Tambahkan 5 gram KBr, 5 tetes tropeolin OO dan 3 tetes metilen blue. Titrasi dengan larutan NaNO2 0,1 M. titrasi dihentikan apabila terjadi perubahan warna dari ungu ke biru terang. Kemudian dihitung kadar parasetamol, replikasi 2 x. Sedangkan analisis parasetamol menggunakan spektrofotometri adalah dengan pembuatan kurva baku baru analisis sampel. Hasil dari penelitian ini bahwa nilai akurasi analisis parasetamol menggunakan metode nitrimetri adalah 94% sampai dengan 103,48%. Nilai akurasi analisis parasetamol menggunakan spektrofometri adalah  98,8 % sampai dengan 101,79%. Hal ini menunjukkan bahwa nilai akurasi pada analisis parasetamol masuk dalam range yang dipersyaratkan AOAC. Dari hasil analisis ini metode spektrofometri lebih baik dari pada metode nitrimetri sebab metode spektrofometri memiliki keunggulan dalam hal selektivitas dan sensitivitas. Selektivitas berarti bahwa metode ini dapat menganalisis dengan benar parasetamol, sedangkan sensitivitas adalah dengan kadar yang kecil metode ini dapat mendeteksi. Selektivitas dan sensitivitas yang tinggi pada metode spektrofotometri menghasilkan nilai akurasi yang tinggi dan memenuhi nilai akurasi yang dipersyaratkan AOAC. Hasil analisis  data menggunakan   uji  independen t-test adalah  nilai signifikansi 0.970 yang artinya terdapat perbedaan  signifikan  antara metode nitrimetri dan spektrofotometri terhadapa nilai akurasi. Kata kunci :  Metode Analisis, Nitrimetri, Parasetamol, Spektrofotometri  ABSTRACT :Paracetamol is a compound that has a chromophore group so that it can be analyzed using spectrophotometry. The nitrimetry method has the advantage of simple equipment, while spectrophotometry has the advantage of a small number of samples being analyzed. Nitrimetry and spectrophotometry are analytical methods that have high accuracy values for the analysis of paracetamol in tablet preparations. Analysis of paracetamol using the nitrimetry method by taking 20 paracetamol tablets, the average was calculated. weigh an average number of tablets put in 20 ml of a solution of HCl: water (1: 2), then stirrer for 20 minutes. Add 5 grams of KBr, 5 drops of tropeolin OO and 3 drops of methylene blue. Titration with 0.1 M NaNO2 solution is stopped when the color changes from purple to bright blue. Then calculated levels of paracetamol, replication 2x. Whereas paracetamol analysis using spectrophotometry is by making a new standard curve analysis of samples.The results of this study indicate that the accuracy of paracetamol analysis using nitrimetry methods is 94% to 103.48%. The accuracy value of paracetamol analysis using spectropometry is 98.8% to 101.79%. This shows that the accuracy value in paracetamol analysis falls within the range required by AOAC. From the results of this analysis the spectropometric method is better than the nitrimetric method. This is because the spectropometric method has advantages in terms of selectivity and sensitivity. Selectivity means that this method can correctly analyze paracetamol, while sensitivity is to a small degree this method can detect. High selectivity and sensitivity in spectrophotometry methods produce high accuracy values and meet the accuracy values required by AOAC. The results of data analysis using independent t-test is a significance value of 0.970, which means that there are significant differences between the nitrimetric and spectrophotometric methods of accuracy.  Keyword :  Method analysis,  Nitrimetri, Paracetamol, Spectrofotometri

A Design of High-Accuracy Displacement Measurement Instrument from Principles of Optics

2012 ◽  
Vol 170-173 ◽  
pp. 2924-2928
Author(s):  
Sheng Biao Chen ◽  
Yun Zhi Tan
Keyword(s):  
Measurement Instrument ◽  
High Accuracy ◽  
Mechanical Tests ◽  
Total Reflection ◽  
Displacement Measurement ◽  
New Method ◽  
Water Volume ◽  
Water Drainage ◽  
Accuracy Of Measurement ◽  
Better Than

In order to measure the water drainage volume in soil mechanical tests accurately, it develop a new method which is based on principles of optics. And from both physical and mathematic aspects, it deduces the mathematic relationship between micro change in displacement and the increment projected on screen. The result shows that total reflection condition is better than refraction condition. What’s more, the screen could show the water volume micro variation clearly, so it can improve the accuracy of measurement.

scholarly journals Temperature Prediction of PMSMs Using Pseudo-Siamese Nested LSTM

2021 ◽  
Vol 12 (2) ◽  
pp. 57
Author(s):  
Yongping Cai ◽  
Yuefeng Cen ◽  
Gang Cen ◽  
Xiaomin Yao ◽  
Cheng Zhao ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Simple Structure ◽  
High Accuracy ◽  
Stator Winding ◽  
High Power Density ◽  
Temperature Prediction ◽  
Permanent Magnet Synchronous Motors ◽  
Training Performance ◽  
Synchronous Motors ◽  
Better Than

Permanent Magnet Synchronous Motors (PMSMs) are widely used in electric vehicles due to their simple structure, small size, and high power-density. The research on the temperature monitoring of the PMSMs, which is one of the critical technologies to ensure the operation of PMSMs, has been the focus. A Pseudo-Siamese Nested LSTM (PSNLSTM) model is proposed to predict the temperature of the PMSMs. It takes the features closely related to the temperature of PMSMs as input and realizes the temperature prediction of stator yoke, stator tooth, and stator winding. An optimization algorithm of learning rate combined with gradual warmup and decay is proposed to accelerate the convergence during the training and improve the training performance of the model. Experimental results reveal the proposed method and Nested LSTM (NLSTM) achieves high accuracy by comparing with other intelligent prediction methods. Moreover, the proposed method is slightly better than NLSTM in temperature prediction of PMSMS.

scholarly journals Keefektifan model search, solve, create, and share ditinjau dari prestasi, penalaran matematis, dan motivasi belajar

2017 ◽  
Vol 4 (1) ◽  
pp. 87
Author(s):  
Rody Satriawan
Keyword(s):  
High School Students ◽  
Mathematical Reasoning ◽  
Mathematics Learning ◽  
T Test ◽  
Learning Motivation ◽  
Control Group ◽  
Teaching Model ◽  
Model Search ◽  
Class Viii ◽  
Better Than

Tujuan penelitian ini adalah untuk mendeskripsikan keefektifan pembelajaran matematika dengan model search, solve, create, and share (SSCS) dan apakah pembelajaran matematika dengan model SSCS lebih baik dibandingkan dengan model konvensional ditinjau dari prestasi, penalaran matematis, dan motivasi belajar. Penelitian ini merupakan penelitian eksperimen semu dengan desain kontrol grup non-ekuivalen. Populasi dalam penelitian adalah seluruh siswa kelas VIII SMP Muhammadiyah Banguntapan yang terdiri dari lima kelas. Sampel penelitian diambil dua kelas secara acak, yaitu kelas VIII-D dan VIII-E. Analisis data yang digunakan adalah uji T2 Hotteling’s, uji MANCOVA, dan uji lanjut dengan prosedur t-test. Setiap analisis dilakukan pada taraf signifikansi 5%. Hasil penelitian ini adalah pembelajaran matematika dengan model SSCS efektif ditinjau dari prestasi dan motivasi belajar, tetapi tidak efektif ditinjau dari penalaran matematis siswa dan pembelajaran matematika dengan model SSCS lebih baik dibandingkan dengan pembelajaran konvesional ditinjau dari prestasi dan penalaran matematis, tetapi tidak lebih baik ditinjau dari motivasi belajar siswa kelas VIII SMP Muhammadiyah Banguntapan.Kata Kunci: model SSCS, model konvensional, prestasi belajar, penalaran matematis, motivasi belajar siswa The Effectiveness of the Model of Search, Solve, Create, and Share Terms of Achievement, Mathematical Reasoning, and Motivation to Learn AbstractThe purpose of this study is to describe the effectiveness of teaching with the teaching model search, solve, create, and share (SSCS) and to describe whether teaching by teaching model SSCS better than by model conventional regarding students’ achievement, mathematical reasoning, and mathematics learning motivation. This research was quasi-experimental with the non-equivalent control group design. The population was all students of class VIII SMP Muhammadiyah Banguntapan consisting of five classes. The sample taken at random consisted of two classes: classes VIII-D dan VIII-E. Class VIII-D was taught by using the model conventional, while class VIII-E was taught by using the SSCS teaching model. The data were analyzed by using a multivariate test Hotelling's T2, MANCOVA test, and tested further by using t-test procedures. Each analysis regarding at the significance level of 5%. The results showed that: the first, the teaching of mathematics by using the SSCS model is effective regarding students’ achievement and students’ mathematics learning motivation, but it is not effective in terms of mathematical reasoning Banguntapan Muhammadiyah junior high school students of class VIII. The second, the SSCS teaching model is better than the conventional teaching model regarding students’ achievement and mathematical reasoning abilities, but not better terms of students’ mathematics learning the mathematics of class VIII SMP Muhammadiyah Banguntapan.Keywords: teaching model of SSCS, teaching model of conventional, academic achievement, mathematical reasoning ability, mathematics learning motivation

scholarly journals Studi Komparatif Kinerja Bank Syariah Dan Bank Konvensional Dalam Menghadapi Krisis Global Berdasarkan Rasio Keuangan

2009 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Rohmawati Kusumaningtias
Keyword(s):  
Financial Crisis ◽  
Economic Crisis ◽  
Banking Sector ◽  
T Test ◽  
The Other ◽  
Other Hand ◽  
Better Than ◽  
Productive Employment

AbstractAt the time of financial crisis, one of the influential institutions in society is banking. Banking sector provide soft loans to create productive employment for the community. On the other hand, customers also need the liquidity from bank-ing. These stakeholders' needs can be met by looking at the performance of bank-ing. This study aims to determine differences in the performance of sharia banking and conventional banking during economic crisis. This study uses t-test to analyze the data. From the research, it was found that in general, the performance of conventional banking is better than sharia banking in the economic crisis.

scholarly journals High Accuracy Measurement of Total Losses in Fractional Horsepower Induction Motors

2015 ◽  
Vol 1 (2) ◽  
pp. 13
Author(s):  
Azzeddine Ferrah ◽  
Mounir Bouzguenda ◽  
Jehad M. Al-Khalaf Bani Younis
Keyword(s):  
Single Phase ◽  
Induction Motors ◽  
Data Acquisition System ◽  
High Accuracy ◽  
Industrial Applications ◽  
Motor Speed ◽  
Accuracy Measurement ◽  
Three Phase ◽  
Better Than ◽  
High Accuracy Measurement

Large and small single-phase and three-phase induction motors are commonly used in industrial applications. The present work represents an attempt towards the design of a high accuracy system for the measurement of fractional horsepower (FHP) induction motor losses and efficiency. The calorimeter designed and built is capable of measuring heat losses of up to 1 kW with an overall accuracy better than 3%. During all tests, ambient temperature, humidity, motor speed and motor frame temperature were recorded using precise digital instruments. The inlet, outlet temperatures and resulting losses were recorded automatically using a high accuracy 12-bit data acquisition system. The preliminary results obtained demonstrate the suitability of the designed calorimeter for the accurate measurement of losses in FHP induction motors.

scholarly journals Keefektifan Penerapan Model Pembelajaran Think Pair And Share Melalui Pendekatan Inquiry Ditinjau dari Kemandiriran Belajar Terhadap Prestasi Belajar Matematika

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Dewi Mutia Anggraeni ◽  
Paridjo . ◽  
Eleonora Dwi W
Keyword(s):  
Random Sampling ◽  
Mathematics Learning ◽  
Learning Model ◽  
T Test ◽  
Learning Models ◽  
High Learning ◽  
Learning Achievement ◽  
Inquiry Approach ◽  
Cluster Random Sampling ◽  
Better Than

Abstrak Penelitian ini bertujuan : (1) Untuk mengetahui apakah ada perbedaan prestasi belajar matematika antara peserta didik yang diajar dengan menggunakan model pembelajaran Think Pair and Share melalui Pendekatan Inquiry dan model pembelajaran Ekspositori.(2) Untuk mengetahui apakah prestasi belajar matematika peserta didik yang diajar model pembelajaran Think Pair and Share melalui Pendekatan Inquiry lebih baik dari pada yang diajar menggunakan model pembelajaran Ekspositori ditinjau dari kemandirian belajar tinggi.(3) Untuk mengetahui apakah prestasi belajar matematika peserta didik yang diajar menggunakan model pembeljaran Think Pair and Share melalui Pendekatan Inquiry tidak lebih baik daripada yang diajar menggunakan model pembelajaran Ekspositori ditinjau dari kemandirian belajar rendah. Populasi dalam penelitian ini adalah peserta didik kelas VII SMP Negeri 3 Brebes tahun pelajaran 2016/2017. Pengambilan sampel menggunakan teknik cluster random sampling. Sampel yang diambil sebanyak 2 kelas eksperimen, 2 kelas kontrol, dan 1 kelas ujicoba. Teknik pengumpulan data yang digunakan adalah tes, angket, dan dokumentasi. Teknik analisis data yang digunakan dengan menetapkan taraf signifikansi 5% adalah uji Anava dengan Rancangan Acak Kelompok, uji-t satu pihak kanan, dan uji-t satu pihak kiri, yang sebelumnya telah dilakukan uji prasyarat yaitu uji normalitas dan uji homogenitas. Dari hasil penelitian dapat disimpulkan bahwa: (1) Ada perbedaan prestasi belajar matematika antara peserta didik yang diajar menggunakan model pembelajaran Think Pair and Share melalui Pendekatan Inquiry dengan model pembelajaran Ekspositori. (2) Prestasi belajar matematika peserta didik yang diajar menggunakan model pembelajaran Think Pair and Share melalui Pendekatan Inquiry lebih baik daripada yang diajar menggunakan model pembelajaran Ekspositori ditinjau dari kemandirian belajar tinggi. (3) Prestasi belajar matematika peserta didik yang diajar menggunakan model pembelajaran Think Pair and Share melalui Pendekatan Inquiry tidak lebih baik atau sama dengan yang diajar menggunakan model pembelajaran Ekspositori ditinjau dari kemandirian belajar rendah. Abstract: This study aims: (1) To find out whether there are differences in mathematics learning achievement between students taught by using Think Pair and Share learning models through the Inquiry Approach and Expository learning models. (2) To find out whether the mathematics learning achievements of students taught by the model Think Pair and Share learning through the Inquiry Approach is better than those taught using the Expository learning model in terms of high learning independence. (3) To find out whether the mathematics learning achievement of students taught using Think Pair and Share learning models through the Inquiry Approach is not better than those taught using the Expository learning model in terms of low learning independence. The population in this study were students of class VII of SMP Negeri 3 Brebes academic year 2016/2017. Sampling uses cluster random sampling technique. Samples taken were 2 experimental classes, 2 control classes, and 1 trial class. Data collection techniques used were tests, questionnaires, and documentation. The data analysis technique used by setting the 5% significance level is the Anova test with the Randomized Group Design, the right-hand t-test, and the left-hand t-test, which has previously been carried out prerequisite tests namely normality test and homogeneity test. From the results of the study it can be concluded that: (1) There are differences in mathematics learning achievement between students who are taught using Think Pair and Share learning models through the Inquiry Approach with the Expository learning model. (2) Mathematics learning achievement of students taught using Think Pair and Share learning models through the Inquiry Approach is better than those taught using the Expository learning model in terms of high learning independence. (3) Mathematics learning achievements of students taught using Think Pair and Share learning models through the Inquiry Approach are not better or the same as those taught using the Expository learning model in terms of low learningindependence. Keywords: ThinkPairandShare, InquiryApproach, Learning Independence, Mathematics Learning Achievement.

scholarly journals Work Value among Married and Unmarried Person’: A Comparative Study

2014 ◽  
Vol 1 (2) ◽  
Author(s):  
Ramesh O. Prajapati
Keyword(s):  
Data Collection ◽  
Comparative Study ◽  
T Test ◽  
Nuclear Families ◽  
Significant Difference ◽  
Low Incomes ◽  
Result Show ◽  
Work Value ◽  
Test Result ◽  
Better Than

Aim of the research is to find out the Work value among married and unmarried person’s. So investigator selected two groups one is married and other is unmarried persons, both groups have 200 persons. In one group has 113 married and other one groups has 87 unmarried persons. The all subjects were randomly selected. Data were collected from Ahmadabad district. Scale was use for data collection is personal datasheet and Work value scale developed by super (1970) and this scale was translated into Gujarati by Jalawadiya (2002), and data were analysis by ‘t’ test. Result show, There is no significant mean difference of Work value between married and unmarried persons. There is no significant difference of the Work value of joint and nuclear families. The high income persons work value is better than the low incomes.

scholarly journals Produktivitas Mahasiswa di Rumah Selama Masa Pandemi Covid-19 di Tangerang Ditinjau dari Jenis Kelamin

2021 ◽  
Vol 1 (1) ◽  
pp. 111-121
Author(s):  
Imarwani Alfa Annisa ◽  
Karjuniwati
Keyword(s):  
Decision Making ◽  
Data Analysis ◽  
Female Students ◽  
T Test ◽  
Male Students ◽  
Mental Attitude ◽  
Men And Women ◽  
Purposive Sampling ◽  
Better Than ◽  
At Home

Productivity is a mental attitude. The mental attitude is always looking for improvements to what already exists. a belief that a person can do a better job today than yesterday and tomorrow is better than today. This study aims to determine differences in student productivity at home during the Covid-19 pandemic in Tangerang in terms of gender. The number of respondents in this study was 30 individuals with the criteria of respondents in this study were male students and active female students who live in Tangerang. sampling using purposive sampling. The data analysis used was the independent sample T-test in the SPSS program. based on the results of data analysis the value of Sig. (2-tailed) of 0.863> 0.05, so as the basis for decision making in the independent sample t-test it can be concluded that there is no difference in the average productivity at home between men and women.

scholarly journals Persepsi Petani terhadap Pilihan Menjual Padi Kepada Penebas atau Perpadi (Kasus Subak Benel, Desa Kaliakah, Kecamatan Negara, Kabupaten Jembrana)

2017 ◽  
pp. 563
Author(s):  
I MADE PRASADA ARY WIRAWAN ◽  
I DEWA PUTU OKA SUARDI ◽  
I MADE SARJANA
Keyword(s):  
T Test ◽  
Mean Difference ◽  
P Value ◽  
Food Crops ◽  
Test Program ◽  
Qualitative Descriptive ◽  
The Mean ◽  
The Difference ◽  
The Government ◽  
Better Than

Farmers Perception Of Options To Sell Rice Penebas Or Perpadi(especially in Subak Benel, Kaliakah Village, Negara districts,Jembrana Regency) Various efforts have been implemented by the Provincial Food Crops Agency of Balito stabilize the price of grain, this is done by giving Funds of Rural EconomicEmpowerment Capital to the government for the purchase of rice. Although it hasbeen done from 2003, farmers are still selling it to Penebas with a bondage system.The purpose of this study to determine the perception of farmers to the choice ofselling rice to Perpadi or Penebas seen and differences in farmers' perceptions of thechoice of selling rice to Penebas or Perpadi. The research location is located in SubakBenel, Kaliakah Village, State District, Jembrana District. The analytical methodused is qualitative descriptive that aided with score, to answer the purpose ofresearch by using questionnaire. The results of this study indicate that the perceptionof farmers to the choice of selling rice to Perpadi better than to Penebas. This is seenin the achievement of the farmers' choice of selling paddy to Perpadi is very goodand to Penebas is good. The difference of Perpadi with Penebas is measured throughDifferent Test with SPSS Independent Sample T test program which the result of Sigvalue. Or p value of 0.004 where <0.05 then there is a statistically significantdifference in probability 0.05, the mean difference or mean of both groups is shownin Mean Difference ie .29559.

scholarly journals Novel 500-GHz Band Waveguide Stepped Septum-Type Circular Polarizer with a New High-Accuracy and Very Small Waveguide Flange

2020 ◽  
Author(s):  
Yutaka Hasegawa ◽  
Hiroyuki Maezawa ◽  
Hideo Ogawa
Keyword(s):  
High Performance ◽  
High Accuracy ◽  
Circular Polarizer ◽  
New Methods ◽  
Position Errors ◽  
Surface Flatness ◽  
Atmospheric Observations ◽  
Dimensional Errors ◽  
Determination Mechanism ◽  
Better Than

Abstract A new waveguide stepped septum-type circular polarizer (SST-CP) was developed to operate in the 500-GHz band for radio astronomical and planetary atmospheric observations. In a previous study, we developed a practical SST-CP for the 230-GHz band. However, several issues prevent this device being easily scaled down to the 500-GHz band, such as manufacturing dimensional errors and waveguide flange position errors. In this study, we developed a new waveguide flange with a high-accuracy position determination mechanism and a very small size of 10 × 10 mm. We also developed a new fabrication technique to obtain very good flatness for the device’s blank materials by high-accuracy polishing using a resin fixture. Using these new methods, the manufactured 500-GHz band SST-CP achieved a cross-polarization talk level of better than – 30 dB at 465–505 GHz, a device surface flatness of within 3 μm, and also the horizontal positioning error of ± 3 μm. These results indicate that the developed 500-GHz band SST-CP has high performance in the high-frequency band, and thus the new manufacturing methods are effective in the 500-GHz band.

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