scholarly journals UJI KANDUNGAN HIDROQUINON PADA SEDIAAN KRIM RACIKAN DOKTER DAN KRIM PENCERAH WAJAH DENGAN MENGGUNAKAN SPEKTROFOTOMETER UV

2021 ◽  
Vol 4 (1) ◽  
pp. 30
Author(s):  
Rahayu Artini Yuan
Keyword(s):  
Experimental Research ◽  
Maximum Absorption ◽  
A Value

Hydroquinon is a chemical used as a skin lightener. However, its effectiveness began to be questioned after the emergence of a study showing that hydroquinone can trigger cancer. This study aims to analyze the hydroquinone content of several doctor-made creams and branded facial lightening creams circulating in Denpasar. This research is an experimental research. The sample used consisted of five samples of doctor-made creams coded D1-D5, while branded lightening creams were coded P1-P10. Based on the results of the analysis, the wavelength of 293 nm is the wavelength that provides maximum absorption with the equation y = 0.023x + 0.005 with a value of R2 = 0.996. 0.023. The results of the analysis showed that all samples of the doctor's cream contained hydroquinone with an average of 11.9322 ppm or 1.1932% and did not exceed the BPOM regulations, namely 5% for cream preparations prescribed by doctors. And all samples of branded facial lightening creams in Denpasar City contain hydroquinone with an average hydroquinone level of 3,987 ppm or 0.3987% and do not exceed the BPOM regulations, which is 2% for whitening cream preparations that are sold freely without a doctor's prescription. 

scholarly journals PELATIHAN MINDFULNESS UNTUK MENURUNKAN TINGKAT STRES PADA SISWI KELAS X

2020 ◽  
Vol 12 (2) ◽  
pp. 159-178
Author(s):  
Ulfa Noor Laili Uswatun Hasanah ◽  
Siti Muthia Dinni
Keyword(s):  
Experimental Research ◽  
Mindfulness Training ◽  
Test Method ◽  
Wilcoxon Test ◽  
Severe Stress ◽  
A Value ◽  
Stress Levels ◽  
Before And After ◽  
The Difference ◽  
Research Type

This study aims to determine the effect of mindfulness training to reduce the stress levels of 7 students in SMK X Pundong who have moderate to severe stress levels. The stress level was measured using the DASS scale. This research is categorized into experimental research type with one group pretest-posttest design. The data obtained were then analyzed using the non-parametric Wilcoxon test method to see the difference between students’ stress levels before and after the intervention through the IBM SPSS Statistics 25 for windows program. The results showed that there were significant differences in students’ stress levels before and after the intervention was given with a value of p = 0.018 (p <0.05). This proves that mindfulness training can reduce the stress levels of students in class X.

scholarly journals Pengaruh Metode Pembelejaran Diskusi Buzzgroup terhadap Keaktifan dan Prestasi Belajar Siswa

2017 ◽  
Vol 5 (2) ◽  
pp. 48
Author(s):  
Nurvilia Apriyanti ◽  
Lovy Herayanti ◽  
Habibi Habibi
Keyword(s):  
Experimental Research ◽  
Group Discussion ◽  
Sampling Technique ◽  
Learning Methods ◽  
Learning Achievement ◽  
A Value ◽  
Eighth Grade Students ◽  
Quasi Experimental ◽  
Class Viii ◽  
Academic Year

This study was conducted to determine the effect of buzz group discussion learning methods on the activeness and learning achievement of physics in class VIII of SMPN 4 Praya Barat Daya 2015/2016 Academic Year. The type of research used in this study is a kind of quasi-experimental research. The population in this study were all eighth-grade students totaling 38 people consisting of class VIII A totaling 20 people as the experimental class and class VIII B totaling 18 people as the control class with the sampling technique used was a saturated sampling technique. The instruments used are valid observation and test sheets both in content, construct, and empirical with a value of 3.34; 3.40; and 3.23, and reliable with the value of αCronbach = 0.608. The results of this study were also able to influence the achievement of learning physics. Based on statistical calculations using the ttest test, the value of tcount = 23.00 is greater than t table = 2.02 (t count = 23.00> t table = 2.02). Thus, it can be concluded that there is the influence of buzz group discussion learning methods on the activeness and learning achievement of physics in class VIII Praya Barat Daya SMP 4 2015/2016 Academic Year.

scholarly journals Meningkatkan Keaktifan Anak Autis Dalam Mengikuti Kegiatan Melalui Terapi Behavioral Di Wisma Halimun

2021 ◽  
Vol 2 (1) ◽  
pp. 38-45
Author(s):  
Lorentius Goa
Keyword(s):  
Research Design ◽  
Experimental Research ◽  
Second Order ◽  
Human Behaviour ◽  
Controlled Experiments ◽  
Behaviour Therapy ◽  
The Third ◽  
A Value ◽  
Post Test ◽  
Control Behaviour

The term autism comes from the word “ auto” which means “ yourself ” while ” ism ” means “ a stream “if you join it means that an understanding is interested in myself. So, autism is a child who is interested in his world / aloof. The factor that causes autism 8 – 11 % of children with are genetic, but it is also caused by genetics and viruses. Behaviourism is a scientific view of human behaviour. It is orderly behaviour and carefully controlled experiments will reveal the laws that control behaviour. Every individual has the same positive and negative tendencies. The behavioristic theory is a theory that applies the principle of strengthening stimulus and response. This study aims to describe the three less active children participating in behaviour therapy activities at the Halimun Paulus underworld. This study used a quantitative experimental research design. Based on the results of the study with the methods used by pretest and posttest design for 5 subsidiaries of children’s activeness, the following results are obtained: the first subject AF from the pretest got a score of 56,6 and the posttest got a value of 72,2, then an increase of 15,6. And the second subject FG from the pre-test got a value of 52, and the post-test got a value of 65, then it has increased in value by 13. While the third subject of the KF from the pre-test received a value of 53,2, and the test post received a value of 68,2, a 15 increase. So seen from the three subjects which experienced the highest increase in AF 15,6 and second-order KF had an increase of 15, and the third had an increase of 13.

scholarly journals Physiotherapy Management To Prevention Of Covid-19 By Improved Physical Activity In Elderly

2021 ◽  
Vol 1 ◽  
pp. 141-147
Author(s):  
Andung Maheswara Rakasiwi ◽  
Ade Irma Nahdliyyah
Keyword(s):  
Physical Activity ◽  
Experimental Research ◽  
Normal Structure ◽  
The Elderly ◽  
P Value ◽  
Physical Problems ◽  
A Value ◽  
Post Test ◽  
And Function ◽  
The Impact

Coronavirus 2019 (COVID-19), is an acute respiratory syndrome caused by the corona-2 virus (SARS-CoV-2). Elderly is a condition where the tissue's ability to repair itself or replace itself slowly disappears and maintains its normal structure and function so that it cannot survive. Problems that may arise, it is necessary to improve or improve the physical condition of the elderly, which can help them to maintain their health in their retirement. This study aims to reduce the impact of the Covid 19 pandemic on the elderly, provide an overview of the physical problems of Covid 19 in the elderly and prevention of Covid 19 in the elderly. This type of research is a type of experimental research that uses a pre- experimental research design in the form of a one-group pretest-posttest design. showed a probability value with a value of p <0.05. These  results indicate that physiotherapy management in the elderly during Covid 19 provided support for increased physical activity, so that the risk of being exposed to Covid 19 can be eliminated. management physiotherapy for covid 19 the p value is 0.000, p value <0.05, this shows that there are significant results between the pre test and post test on the physiotherapy management of the elderly during the Covid 19 pandemic. For the physical activity for elderly the p value is 0,015 this shows that the physical activities carried out by the elderly during a pandemic have not changed but can be given motivation to do physical activity. For the information fear of ctracting corona virus p value 0,007 this shows that the information on physical activity provided by physiotherapy does not change the fear of the elderly still being exposed to Covid

scholarly journals PERBANDINGAN ANALISIS NUMERIK MENGGUNAKAN METODE SECANTDAN METODE ITERASI SATU TITIK UNTUK MENENTUKAN KOEFISIEN GESEK UDARA PADA KUBUS DAN SILINDRIS

2018 ◽  
Vol 5 (2) ◽  
pp. 43
Author(s):  
Linda Sekar Utami
Keyword(s):  
Friction Coefficient ◽  
Experimental Research ◽  
Coefficient Of Friction ◽  
Iteration Method ◽  
Secant Method ◽  
A Value ◽  
The Difference ◽  
The One ◽  
The Relationship

Abstrak:Koefisien gesek udara merupakan kemampuan udara untuk memberikan gesekan atau tahanan terhadap benda yang melaluinya, sehingga dapat memperlambat laju benda tersebut.Penelitian ini merupakan penelitian eksperimen laboratorium yang bertujuan untuk mengetahui perbedaan hasil analisis mengunakan metode  secant  dan metode iterasi satu titik dan menentukan nilai koefisien gesek udara (c) pada Kubus dan silinderis.Hasil dari penelitian dan pengamatan yang dilakukan dianalisi menggunakan metode  secantdan metode iteasi satu titik. Nilai  v diperoleh dengan menurunkan persamaan  h(t) yang diperoleh dari grafik hubungan antara  hdan  tmenggunakan  Microsoft exel. Dengan menggunakan metode  secantdiperoleh kooefisien gesek (cg) pada kubus pada rentang antara (0,21256 - 0,55411) kg/s sedangkan pada silindris  berada pada rentang antara (0,19252 - 0,46616) kg/shal ini menujukan koefisien gesek udara yang dihasilkan dengan metode  secantmemiliki nilai yang konsatan baik pada kubus ataupun silinderis. Hal ini terjadi karna nilai  cgpada kubus dan silindris tersebut berada pada rentang orde 0<cg<1. Dengan menggunakan metode iterasi satu titik diperoleh kooefisien gesek (cg) pada kubus dengan rentang (0,01674 - 0,12713) kg/s sedangkan pada silindris  berada pada rentang antara (0,01653 - 0,10046 ) kg/s hal ini menjukan koefisien gesek udara yang dihasilkan dengan metode iterasi satu titik memiliki nilai yang konsatan baik pada kubus ataupun silinderis. Dengan menggunakan metode  secantnilai koefisien gesek udara yang di hasilakan berada dibawah nilai satu atau 0,1 sedangkan nilai  koefisien yang dihasilkan dengan menggunakan pendekatan iterasi satu titik berada dibawah 0,01.Sehingga dapat disimpulkan metode iterasi satu lebih teliti dalam menentukan koefisien gesek udara dibandingkan dengan metode secantAbstract: Air friction coefficient is the ability of air to provide friction or resistance to the object through it, so as to slow the rate of the object tersebut.Penelitian is a laboratory experimental research that aims to determine the difference of the results of the analysis using secant method and one-point iteration method and determine the value of air friction coefficient (c) on cube and cylinder. The results of the research and observation were analyzed using secant method and one point iteation method. The value of v is derived by deriving the equation h (t) obtained from the graph of the relationship between hdan using Microsoft exel. Using the method secantdiperoleh kooefisien friction (cg) on the cube in the range between (0.21256 - 0,55411) kg / s while on the cylindrical is in the range between (0.19252 - 0.46616) kg / shal is addressed coefficient of friction which is produced by secant method has a value that is either in the cube or cylindrical consumptions. This happens because the value of cgpada cube and cylindrical is in the order range 0 <cg <1. Using one point iteration method, the friction coefficient (cg) in the cube with the range (0.01674 - 0.12713) kg / s while on the cylindrical is in the range between (0.01653 - 0.10046) kg / the air friction coefficient generated by the one-point iteration method has a value of either a cube or a cylindrical consonant. Using the method secantnilai air friction coefficient that in the yield is below the value of one or 0.1 while the coefficient value generated by using a one-point iteration is below 0.01. So it can be concluded one more accurate iteration method in determining the coefficient of air friction compared with secant method.

scholarly journals PENGARUH PELATIHAN SPEED, AGILITY, QUICKNESS (SAQ) TERHADAP KECEPATAN REAKSI PENJAGA GAWANG SEPAKBOLA

2020 ◽  
Vol 12 (2) ◽  
pp. 120
Author(s):  
Rizki Apriliyanto
Keyword(s):  
Experimental Research ◽  
Control Group ◽  
Training Methods ◽  
Test Results ◽  
A Value ◽  
Analysis Technique ◽  
Randomized Control ◽  
Experimental Group ◽  
Reaction Speed ◽  
Paired T Test

The purpose of the study was to examine the effect of speed, agility, and quickness training on the reaction speed of the soccer goalkeeper. There are two groups, namely the experimental group with speed, agility, and quickness training and the control group with conventional training. The method used is experimental research using a randomized control group pretest-posttest design. The analysis technique uses a dependent paired t-test. Different test results can be seen that the t-value calculated in the experimental group 9787, the control group with a value of 1.990. influence is obtained from the value of p = 0.000 <0.05, which means that the training methods of speed, agility, and quickness can increase the reaction speed of the soccer goalkeeper. Football goalkeeping coach recommendations in increasing reaction speed in order to provide speed, agility and quickness training.

scholarly journals Frekuensi Pernafasan Anak Penderita Asma Menggunakan Intervensi Tiup Super Bubbles dan Meniup Baling Baling Bambu

2020 ◽  
Vol 2 (2) ◽  
pp. 119-126
Author(s):  
Harsismanto J ◽  
Padila Padila ◽  
Juli Andri ◽  
Muhammad Bagus Andrianto ◽  
Lussyefrida Yanti
Keyword(s):  
Respiratory Rate ◽  
Experimental Research ◽  
Univariate Analysis ◽  
Respiratory Frequency ◽  
Bivariate Analysis ◽  
A Value ◽  
Before And After ◽  
Children With Asthma ◽  
Quasi Experimental ◽  
Medium Type

This study aimed to see the comparison of blowing bubbles and blowing bamboo blades to the respiratory frequency of children with asthma in the Edelweiss Room, DR. M. Yunus Bengkulu Year 2019. The research design used was a quasi-experimental research. The univariate analysis results showed that the average respiratory rate before and after doing super bubble blow therapy was in the moderate category (26.91) and after the intervention was in the medium type (25.30). The average respiratory frequency before and after blowing the bamboo propeller was moderate (26.69) and light (24.81). The bivariate analysis results showed that there was an effect of blowing bubbles on respiratory frequency in children with a value of p = 0.000, and there was an effect of blowing bamboo propellers on respiratory frequency in children with asthma with a value of p = 0.007. In conclusion, there is no difference in superbubbles blowing therapy's effectiveness by blowing bamboo propellers in children with asthma.   Keywords: Bamboo Propeller, Respiratory Frequency, Blow Super Bubbles

scholarly journals The Energy Produced By 150 Watt Monocrystalline Solar Panels In Metro City

2020 ◽  
Vol 5 (2) ◽  
pp. 82
Author(s):  
Muhammad Barkah Salim ◽  
Novita Intan Kusuma ◽  
Nyoto Suseno
Keyword(s):  
Experimental Research ◽  
Research Method ◽  
Solar Panel ◽  
Solar Panels ◽  
A Value ◽  
The City

Researchers have conducted research on the energy produced by 150 watt solar panels in the city of metro. This research was conducted because many solar panels have been made, but it has not yet been identified how much energy is actually produced. In addition, to find out whether the city of metro is feasible to use solar panels. The purpose of this study was to determine the energy produced by 150 watt solar panels in the city of metro. The research method used is experimental research. Researchers conducted for five days from 08.00 AM to 04.00 PM. After doing the research, it was found that the energy that could be produced in the solar panel in one day was 876,507 joule. The value of the effectiveness of solar panels in the city of metro has a value of 100% with criteria for proper use.

scholarly journals Durability of steel rail bridges as a part of environmental protection

2016 ◽  
Vol 15 (1) ◽  
pp. 061-070
Author(s):  
Petro Savchuk ◽  
Olesya Maksymovych ◽  
Vitaliy Knysh
Keyword(s):  
Stress Intensity ◽  
Adverse Effects ◽  
Experimental Research ◽  
Fatigue Cracks ◽  
Steel Structures ◽  
Intensity Factors ◽  
Steel Rail ◽  
Method Of Calculation ◽  
A Value ◽  
Existing Bridges

Condition of bridges with defects can lead to destruction and at the same time adverse effects on the environment, causing discomfort to society. Therefore, it is necessary to predict the durability of existing bridges, including resistance to increasing number of fatigue cracks, which can lead to the destruction of the steel elements. The article presents the results of theoretical and experimental research, which can be used to assess the durability of steel structures. The method of calculation of fatigue cracks growth in anisotropic elements, occurring at different angles to the stiffeners, was presented in the paper. Developed calculation allows estimating time of growth of cracks to some (safe) sizes and determining a value of stress intensity factors, based on which major repairs of the damaged areas can be planned.

scholarly journals Experimental research on vibrational digging-up of sugar beet

2018 ◽  
Vol 5 (1) ◽  
pp. 30-41
Author(s):  
V. Adamchuk ◽  
V. Bulgakov ◽  
I. Holovach ◽  
Ye. Ignatiev
Keyword(s):  
Sugar Beet ◽  
Technological Process ◽  
Experimental Research ◽  
Statistical Processing ◽  
Technological Parameters ◽  
A Value ◽  
Crop Root ◽  
The Impact ◽  
Experimental Researches

The technological process of vibrational digging-up of sugar beet has spread in many sugar beet-sowing coun- tries. The experience of using this process demonstrated its advantages compared against other ways of dig- ging-up, but there have been scarce experimental researches of the vibrational digging-up of sugar beet from soil which makes this topic urgent for sugar beet production. Aim. The experimental determination of rational parameters and modes of the vibrational digging-up working tool to ensure the required quality of conducting the technological process of digging sugar beet from soil. Methods. The methods of planning a multifactor ex- periment, fi eld studies, statistical processing, regression analysis of the experimental data with building graphic curves were applied. Results. A new model of a tool for vibrational digging-up of sugar beet from soil has been elaborated. The accepted program and method were used to conduct experimental research on the impact of the main construction and technological parameters of the vibrational digging-up working tool of the beet harvester on the quality indices of performing the technological process of harvesting sugar beet. The energy parameters of new vibrational digging-up working tools were studied in fi eld conditions via registering the values of tenzometric sensors in different modes of the device and different parameters and working modes of the vibrational digging-up tools. Conclusions. It was established that there is a value of the vibration frequency and running depth in soil of the vibrational digging-up working tool for each value of the translational veloc- ity of the vibrational digging-up machine which corresponds to minimal losses and damage to crop roots. It was also found that the degree of crop root damage depends on the conditions of performing the technological process of vibrational digging-up (soil solidity and humidity), and the weight of damaged crop roots increases with the increase in solidity and the decrease in humidity of soil.

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