Article Per Year (5 Year)
p-Index From 2020 - 2025
2.064
P-Index
This Author published in this journals
All Journal Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Stannum : Jurnal Sains dan Terapan Kimia Jurnal Kesehatan Rajawali Asian Journal of Health and Applied Sciences Jurnal Pendidikan Progresif Paradigma: Jurnal Filsafat, Sains, Teknologi, dan Sosial Budaya
Farhan Baehaki
Unknown Affiliation
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Education Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary Other

Published : 14 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 14 Documents
Search

 1   2 
PENGEMBANGAN INSTRUMEN ASSESSMENT KELARUTAN DAN HASIL KALI KELARUTAN BERBASIS KETERAMPILAN PROSES SAINS Farhan Baehaki; Nina Kadaritna; Ila Rosilawati
Jurnal Pendidikan dan Pembelajaran Kimia Vol 3, No 1 (2014): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.912 KB)

Abstract

This study aims to develop an assessment instrument based on science process skills. The research method used is Research and Development (RD). Based on feedback from students, this assessment instrument has a 84% rate the attractiveness and readability level of 86,39%. Based on feedback from teachers, this assessment instrument has a readability level of 81,33% and 84,44% level according to the contents. Constraints faced in the development of assessment instrument is the difficulty in developing matter to measure the science process skills (observing, classifying, predicting, inferring, and communicating), the difficulty in making images submikroskopis, and the lack of reference to make matters enrichment that can measure the skills process of science students. Penelitian ini bertujuan untuk mengembangkan instrumen assessment berbasis keterampilan proses sains. Metode penelitian yang digunakan adalah Research and Development (RD). Berdasarkan tanggapan dari siswa, instrumen assessment ini memiliki tingkat kemenarikan 84% dan tingkat keterbacaan 86,39%. Berdasarkan tanggapan dari guru, instrumen assessment ini memiliki tingkat keterbacaan 81,33% dan tingkat kesesuaian isi 84,44%. Kendala yang dihadapi dalam pengembangan instrumen assessment ini adalah kesulitan dalam mengembangkan soal untuk mengukur keterampilan proses sains (mengamati, mengklasifikasi, memprediksi, menyimpulkan, dan mengkomunikasikan), kesulitan dalam membuat gambar submikroskopis, dan kurangnya referensi untuk membuat soal pengayaan yang dapat mengukur keterampilan proses sains siswa. Kata kunci : assessment, hasil kali kelarutan, kelarutan, keterampilan proses sains
BIOSORPSI LOGAM BERAT KROMIUM HEKSAVALEN (Cr6+) DALAM AIR SUNGAI CITARUM DESA CILAMPENI DENGAN MENGGUNAKAN BIOMASSA Saccharomyses cerevisiae DAN Rhizopus orizae Suci Rizki Nurul Aeni; Ira Prima Sari; Farhan Baehaki
Jurnal Kesehatan Rajawali Vol 9 No 2 (2019): September
Publisher : Sekolah Tinggi Ilmu Kesehatan Rajawali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54350/jkr.v9i2.38

Abstract

Latar belakang: Air merupakan sumber kehidupan bagi manusia, hewan dan biota lainnya. Kerusakan sungai Citarum sudah mengkhawatirkan. Hal ini mendorong pemerintah untuk bersinergi menyelaikan masalah pencemaran lingkungan di sungai Citarum melalui program Citarum Harum yang diharapkan dapat bersinergi dengan Perguruan Tinggi. Penelitian ini salah satu bentuk upaya partisipasi aktif dosen untuk ikut mensukseskan program pemerintah tersebut. Kromium heksavalen terdapat dalam air sungai Citarum, ini telah dapat dihilangkan dengan metode biosorpsi. Biosorpsi menggunakan adsorben biologis merupakan metode alternatif untuk dapat membersihkan logam berat dalam air sungai Citarum. Pemanfaatan Saccharomyses cerevisiae dan Rhizopus orizae sebagai biomaterial yang mampu menyerap logam berat.Tujuan Penelitian: Penelitian ini bertujuan untuk mengetahui penurunan logam berat setelah dilakukan proses adsorpsi logam berat Cr6+ dalam air sungai Citarum oleh biomassa S.cerevisiae dan R. orizae.Metode Penelitian: Metode yang digunakan pada penelitian ini yaitu melakukan uji Biosorpsi menggunakan Saccharomyses cerevisiae dan Rhizopus orizae skala Laboratorium. Jumlah S. cerevisiae yang diujikan pada penelitian ini adalah 250 μ, 500 μ dan 750 μ karena jamur yang digunakan dalam bentuk suspensi. Jumlah Rhizopus orizae yang digunakan adalah sebanyak 0,1 sampai dengan 2 g bentuk jamur ini berupa residu kering yang dihiangkan airnya melalui metode pemanasan open. Pemutaran biosorpsi menggunakan S.cerevisae diujikan dengan 250 rpm, 750 rpm dan 1500 rpm. Sedangkan untuk biosorpsi menggunakan R.orizae diujikan dengan kecepatan pengadukan 750 rpm. Kadar logam Cr6+ ditentukan melalui pengukuran dengan menggunakan instrumentasi Spektrofotometer UV-Vis panjang gelombang 525 nm.Hasil: Berdasarkan hasil pengujian tersebut memberikan kesimpulan bahwa S. cerevisiae dan Rhizopus orizae dapat menyerap logam Cr6+ dalam air sungai citarum dengan efektif. Penurunan tertinggi diperoleh pada penambahan adsorben terbanyak yaitu 750 μ untuk S. cerevisiae dan 1,6 g untuk R. orizae.Simpulan: Biomassa S. cerevisiae dan Rhizopus orizae dapat menurunkan kadar logam Cr6+ dalam air sungai dengan kecepatan pengadukan optimum yaitu 1500 rpm dan kosentrasi biomassa 750 μ untuk S. cerevisiae dan 1,6 g untuk R. orizae.
PENGARUH EKSTRAK DAUN BABADOTAN (AGERATUM CONYZOIDES, L) TERHADAP WAKTU PEMBEKUAN DARAH Farhan Baehaki; Aziz Ansori Wahid
Jurnal Kesehatan Rajawali Vol 9 No 2 (2019): September
Publisher : Sekolah Tinggi Ilmu Kesehatan Rajawali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (602.845 KB) | DOI: 10.54350/jkr.v9i2.76

Abstract

Latar Belakang: Luka merupakan rusak atau hilangnya jaringan tubuh. Jika terjadi luka disekitar pembuluh darah yang rusak, maka akan terjadi proses penghentian pendarahan dan perbaikan jaringan sebagai respon tubuh melalui proses hemostasis. Babadotan (Ageratum conyzoides,L) merupakan salah satu tanaman yang memiliki kandungan senyawa aktif untuk mempercepat proses hemostasis.Tujuan Penelitian: Untuk mengetahui pengaruh pemberian ekstrak daun babadotan terhadap waktu pembekuan darah.Metode Penelitian: Metode penelitian yang digunakan yaitu quasy experiment (eksperimen semu). Rancangan ini berupaya untuk mengungkapkan hubungan sebab akibat dengan cara melibatkan kelompok kontrol dan kelompok eksperimen. Data yang diperoleh merupakan data primer yaitu data yang didapatkan dari hasil pemeriksaan waktu pembekuan darah dengan pemberian dan tanpa pemberian ekstrak daun babadotan dengan metode pemeriksaan Lee and White.Hasil: Rerata waktu pembekuan dari sampel darah yang tanpa perasan daun babadotan yaitu 9,89 menit, sedangkan sampel darah yang diberikan perasan daun babadotan menunjukkan waktu pembekuan 9,19 menit. Sehingga selisih waktu pembekuan pada kedua sampel adalah 0,7 menit atau lebih cepat sebesar 7%.Simpulan: Ekstrak daun babadotan (Ageratum lonyzoides,L) dapat digunakan untuk mempercepat waktu pembekuan darah.
Separation of Chromium(VI) Metal in Wastewater Using Electrocoagulation Method with NaCl Coagulant Farhan Baehaki; Wasiyah Khusna Fadhilah; Mila Karmila
Stannum : Jurnal Sains dan Terapan Kimia Vol 4 No 1 (2022): April 2022
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v4i1.2924

Abstract

Waste has become an environmental problem that needs attention in its handling. Metal Cr (VI) is one of the components of a very dangerous pollutant produced by industrial activities, such as textiles. In fact, there are still many textile industry players who do not treat their waste because they feel that the processing requires expensive upfront costs. Therefore, this research was conducted to perform a sewage treatment system with a separation technique using an alternative method, namely electrocoagulation using NaCl coagulant. The research was conducted at the Laboratory of Applied Chemistry and Toxicology at the Rajawali Health Institute. The sample used is a sample of liquid waste taken directly from a textile industry in Bandung, Indonesia. The results showed a decrease in the levels of Cr (VI) after the electrocoagulation process until it reached a percentage value of 64.02%. Based on this, it can be said that the electrocoagulation method is effective enough to be used as a simple treatment technique to reduce the levels of Cr (VI) metal in wastewater.
Analysis of Caffeine Levels in Packaged Coffee in Indonesia Baehaki, Farhan; Nurhamidah, Yeni; Purwaeni, Purwaeni
Asian Journal of Health and Applied Sciences Vol. 2 No. 1 (2023): Asian Journal of Health and Applied Sciences (AJHAS)
Publisher : Lighthouse Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53402/ajhas.v2i1.238

Abstract

Coffee is a popular and much-loved drink in Indonesian society to relieve drowsiness or increase stamina when working. This is because in coffee, there is an active compound, namely caffeine. Although it has benefits, in fact, caffeine will have a negative impact on the body if consumed in excess. The Indonesian National Standard 01-3542-2004 has determined that the limit value of caffeine content in food and beverages is 0.45–2% w/w. This study aimed to determine the caffeine content of packaged coffee sold in the community using a UV-Vis Spectrophotometer. The results of the analysis showed that 16 of the 20 samples analyzed had caffeine levels in accordance with the provisions of the Indonesian National Standard, while the other 4 samples had caffeine levels above the specified value. Even sample Q has a caffeine content of 7.12% w/w, far above the threshold value. Based on the results of this study, it can be concluded that there are still packaged coffees containing caffeine above the specified threshold value. So, consumers should pay attention to the amount of caffeine consumed so as not to cause a negative impact on their health.
Pengaruh Lama Penyimpanan Terhadap Kadar Hemoglobin pada Komponen Packed Red Cell yang Ditambahkan Antikoagulan CPDA(1) Nurhamida, Trinida; Baehaki, Farhan
Jurnal Kesehatan Rajawali Vol 14 No 01 (2024): Jurnal Kesehatan Rajawali
Publisher : Sekolah Tinggi Ilmu Kesehatan Rajawali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54350/jkr.v14i01.414

Abstract

Packed Red Cell (PRC) is generally used for the blood transfusion process. The quality of PRC is closely related to its storage time. To maintain the quality of PRC, an anticoagulant is usually added, such as CPDA(1), which can maintain the quality of PRC for up to 35 days. However, within this time period it is necessary to check the components in the PRC. This study aims to determine the effect of storage time on hemoglobin levels in PRC added with the anticoagulant CPDA(1). This research is an observational study using a cross sectional design. The samples used were 20 flasks of PRC blood at the Majalengka Regional Hospital Blood Bank to which the anticoagulant CPDA(1) was added. Hemoglobin levels were measured every seven days for up to 35 days using a Sysmex XN-450 Hematology Analyzer. The data were analyzed descriptively to determine the characteristics of the data and analyzed statistically using the One Way Anova Test to determine the effect of storage time on hemoglobin levels. The results of the study showed that the average hemoglobin levels in PRC from week zero to week five were respectively 21.85 g/dL, 22.35 g/dL, 22.84 g/dL, 23.55 g/dL, 24.27 g/dL, and 24.99 g/dL. The results of statistical analysis also showed a significant effect with a significant increase in hemoglobin levels from week 0 to week 5. So, it can be concluded that storage time is one of the factors that must be considered to maintain the quality of PRC.
Perbandingan Reaksi Transfusi Darah pada Pasien Thalasemia dengan Pemberian Darah PRC Biasa dan Darah PRC Leukodepleted Laksana, Roni Windi; Baehaki, Farhan
Jurnal Kesehatan Rajawali Vol 14 No 01 (2024): Jurnal Kesehatan Rajawali
Publisher : Sekolah Tinggi Ilmu Kesehatan Rajawali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54350/jkr.v14i01.416

Abstract

Packed Red Cell (PRC) blood transfusion is the main therapy for thalassemia patients to increase hemoglobin levels and prolong life. PRC blood contains high levels of leukocytes so it has the potential to cause allergic reactions and fever post-transfusion. Therefore, the alternative is usually to use PRC Leukodepleted (PRC-LD) blood because it has a very low leukocyte content, making it possible to reduce the risk of transfusion reactions. This study was conducted to compare the incidence of transfusion reactions between administration of regular PRC blood and PRC-LD blood in thalassemia patients. This research is a retrospective study with a quantitative approach and descriptive design. Data collection was carried out by looking at medical records for the period January-December 2023. The data collected was analyzed descriptively to look at the characteristics of the data in depth. In addition, statistical analysis was carried out using the Chi-Square Test to analyze the effect of using regular PRC and PRC-LD. It was found that there was a significant difference (sig. <0.01) in the incidence of transfusion reactions using regular PRC blood and PRC-LD. Descriptive data shows that the risk of transfusion reactions when using PRC-LD blood is lower than regular PRC. Thus, it can be concluded that the use of PRC-LD blood has been proven to reduce the incidence of transfusion reactions in thalassemia patients compared to regular PRC blood.
Ekstrak Daun Meniran (Phyllanthus niruri L.) : Bagaimana Pengaruhnya Terhadap Jumlah Trombosit di Dalam Darah? Risma Laila Sumiati; Farhan Baehaki; Nurdin Nurdin; Suyarta Efrida Pakpahan
Stannum : Jurnal Sains dan Terapan Kimia Vol 6 No 1 (2024): April 2024
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v6i1.4401

Abstract

Thrombocytopenia is a condition in which the platelet count is below normal (<150,000-450,000 cells/mm3). Until now, the treatment of thrombocytopenia has not yet found a specific drug and there are side effects from chemical treatment, so alternative solutions are needed, one of which is the use of meniran leaves (Phyllanthus niruri L.). The meniran plant is a wild plant that is often found in the wild, on the streets, as well as vacant land so that people can easily get these plants. The aim of this research was to determine the effect of meniran leaf extract (Phyllanthus niruri L.) on the number of platelets in mice induced by sodium phenytoin. The method used in this research was True Experimental with Pretest and Posttest with Control Group Design consisting of 5 groups which aimed to determine the effect of meniran leaf extract on platelet counts. The data collection technique used in this study used primary data, which was obtained from the results of examining platelet counts on day 0, day 3 after induction and day 7 after treatment with meniran leaf extract (Phyllanthus niruri L.). Then the data obtained was tested using SPSS with the non-parametric Kruskal-Wallis and Mann-Whitney tests. From 25 experimental animals, the results showed that there was a relatively significant increase in the number of platelets after being given therapy with meniran leaf extract (Phyllanthus niruri L.) but there was no difference between each dose. Based on the research results, it can be concluded that meniran leaf extract (Phyllanthus niruri L.) has an effect on increasing the number of platelets.
Correlation Between Lead Levels and The Number of Erythrocytes in The Blood Rizal, Fahmi; Baehaki, Farhan; Layali, Gina Fitri; Riyanto, Agus
Asian Journal of Health and Applied Sciences Vol. 3 No. 2 (2024): Asian Journal of Health and Applied Sciences (AJHAS)
Publisher : Lighthouse Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53402/ajhas.v3i2.456

Abstract

Lead is a toxic air pollutant that can damage human health, one of the areas with a high level of hazardous air population is Cimahi City, West Java, Indonesia. High lead levels can affect the decrease in erythrocytes, resulting in anemia. This study aims to determine the relationship between lead levels and the number of erythrocytes in the blood. The method used in this study is a quantitative descriptive method, with 18 participants. The blood samples obtained were examined for lead levels using an Atomic Absorption Spectrophotometer (AAS) with a wavelength of 283nm. The number of erythrocytes was analysed using a Hematology Analyzer. The data collection technique used was primary data which was then processed using the Correlation Test. Of the 18 respondents, one respondent was found to have high lead levels, which were at 0.1413 mg/L with a dangerous level category. Meanwhile, the results of the number of erythrocytes showed that two respondents had several erythrocytes above normal with the highest value being 6,170,000 cells/mm3 with a normal value of 4,400,000-5,900,000 cells/mm3. The results of the statistical correlation test seen from the significance value obtained a result of 0.183, this value is greater than the significant value of 0.05 so it can be stated that there is no relationship between lead levels and the number of erythrocytes. After testing, it was concluded that there was no significant relationship between lead levels and the number of erythrocytes in the blood.
Analisis Kadar Timbal (Pb) di Dalam Ginjal Mencit (Mus musculus) yang Dipapar Secara Oral Baehaki, Farhan; Riyanto, Agus; Luthfiah, Nur Afifah; Adelin, Azalia; Prahasta, Vivo; Rismayanti, Siti Nur
Jurnal Kesehatan Rajawali Vol 15 No 1 (2025): Jurnal Kesehatan Rajawali
Publisher : Sekolah Tinggi Ilmu Kesehatan Rajawali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54350/jkr.v15i1.563

Abstract

Lead is a type of heavy metal that is harmful to health, including the kidneys. Lead can enter the body through several ways, including food and drink. This study was conducted to determine the effect of oral lead exposure on lead levels in the kidneys. The study was conducted with a post-test only control group design. The samples used were 8 male mice divided into 4 groups and given oral exposure to lead acetate at doses of 0.5 ppm, 1 ppm, and 2 ppm for 21 days. Measurement of lead levels was carried out using an Atomic Absorption Spectrophotometer (AAS) at a wavelength of 283.3 nm. It can be seen from the overall lead exposure at concentrations of 0.5 ppm, 1 ppm, and 2 ppm, that lead deposited in the kidneys increased by 68.67%. At a dose of 0.5 ppm, lead levels in the kidneys were 0.313 ppm (an increase of 9.38%). At a dose of 1 ppm, the lead level in the kidneys was 0.399 ppm (an increase of 39.38%). At a dose of 2 ppm, the lead level in the kidneys was 0.483 ppm (an increase of 68.67%). The average level of Pb absorbed in the kidneys increased along with the increase in lead entering the body.
Co-Authors Adelin, Azalia Agus Riyanto Aziz Ansori Wahid Fahmi Rizal Ila Rosilawati Ira Prima Sari Kodariah, Liah Laksana, Roni Windi Layali, Gina Fitri Luthfiah, Nur Afifah Mila Karmila Murtafi’ah, Ni’matul Nina Kadaritna Nurdin Nurdin Nurdin Nurdin Nurhamida, Trinida Nurhamidah, Yeni Pakpahan, Suyarta Efrida Prahasta, Vivo Purwaeni Purwaeni Risma Laila Sumiati Rismayanti, Siti Nur Ryzal Perdana Ryzal Perdana Sowiyah Sowiyah Suci Rizki Nurul Aeni Sumiati, Risma Laila Suyarta Efrida Pakpahan Wasiyah Khusna Fadhilah