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All Journal Jurnal Ilmu Dasar Jurnal Sains Dasar Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat PROSIDING SEMINAR KIMIA KOVALEN: Jurnal Riset Kimia Jurnal Kimia Mulawarman Science and Technology Indonesia JURNAL ATOMIK Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Bisma: Jurnal Bisnis dan Manajemen Spektrum Analisis Kebijakan Pendidikan VALUE: Journal of Business Studies

Chairul Saleh

Jurusan Kimia Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Mulawarman

Author-ID : 3048669

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Cellulose production from modified cassava skin 2-mercaptobenzotiazole for controlling cadmium (II) metal pollution Yusuf, Bohari; Alimuddin, Alimuddin; Saleh, Chairul; Rahayu, Desy Ridho
Jurnal Sains Dasar Vol 3, No 2 (2014): October 2014
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

The research study of cadmium (II) metal ion adsorption in a solution by 2-mercaptobenzotiazole modified cellulose and unmodified cellulose had been done. The aims of this research are to know the ability of 2-mercaptobenzotiazole modified and unmodified celluloses for adsorbing cadmium (II) metal ion with the composition of modification. The modification processes of cellulose were done by the composition variation between cellulose and MBT of 1:1, 1:2, and 1:3. The adsorption process of metal ions by 2-mercaptobenzotiazole modified cellulose were done by shaking at pH 3, 4, 5, 6, 7, 8, and 9 with the effect of metal ions concentration of 0.05; 0.1; 0,15; 0,2, and 0,25 mg/L. The analysis of functional groups of cellulose-MBT and cellulose unmodified was using FTIR Spectrophotometer. The analysis of cadmium (II) concentration metal ions as cadmium metals were done by atomic absorption spectrophotometer (AAS). The result of this research showed that on the functional groups which derived from FTIR spectrum, there was some similarity of functional groups between unmodified cellulose and MBT-cellulose which could be seen from the wave length of C-S stretching at 663.51 cm-1; functional group of C-H aromatic stretching at 3749.62 cm-1; functional group of C-N at 1319.31 cm-1, and functional group of C=N that came from diazole functional group (-N=C-S) which could be seen at 1597.06 cm-1. The optimum adsorption metal ions cadmium by MBT-cellulose happened at 1:2 composition modification, pH 4, and at the concentration of 0.2 mg/L. Key words: adsorption, modified, cadmium (II) metal ion, cellulose, 2-merkaptobenzotiazole

SIMULASI KONTROL TIMER DRAG RACE BERBASIS ATMEGA8535 Mujahidin, Muhamad; Solechan, Solechan; Saleh, Chairul
Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Vol 5 No 2 (2016): Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan
Publisher : Fakultas Teknik Universitas Maritim Raja Ali Haji

Pencatatan waktu balap drag race belum memenuhi standar baik dari segi alat maupun regulasi yang telah di tentukan. Telah di rancang suatu simulasi control timer drag race berbasis mikrokontroller ATmega8535. Dalam simulasi yang dilakukan, pengendara motor pada saat memulai balapan akan melindas limit switch. Limit switch tersebut akan menyalurkan tegangan sebesar 5V pada input microcontrollerApabila lampu kuning yang menyala, pengendara sudah jump start, maka micro tidak akan memproses perhitungan waktu drag race. Kondisi ini berlaku untuk ketiga lampu kuning. Selanjutnya karena terdeteksi sebagai jump start, lampu merah akan menyala sebagai indikasinya. Apabila lampu hijau yang menyala dan pengendara memulai untuk balapan, maka kondisi seperti ini adalah kondisi normal. Pada kondisi ini mikro akan melakukan perhitungan waktu drag race Selang waktu pergantian nyala lampu dibuat selama 0,5 detik untuk mendapatkan efisiensi waktu. Dengan indikator lampu yang leban lengkap dan penempatan sensor yang lebih sesuai untuk meminimalisir kecurangan.

KAJIAN KEBIJAKAN DAN STRATEGI PEMERINTAH DALAM UPAYA PERLINDUNGAN TENAGA KERJA LOKAL DALAM MENGHADAPI MASYARAKAT EKONOMI ASEAN Saleh, Chairul
BISMA: Jurnal Bisnis dan Manajemen Vol 10 No 2 (2016)
Publisher : Jurusan Manajemen Fakultas Ekonomi dan Bisnis

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workers, should be started from the standardization of competence and understanding of language and culture, objective and transparent certifications, strong commitment to the welfare of workers and adequate health insurance. In addition there should be strict rules related to discipline and commitment as well as the workers agreed rules related to piracy of labor and industrial relations in this case, the government became supervisor and perform kontrol. Some industries that should be prioritized to be developed in order to absorb the lokal workforce large enough and creating differentiation, the first is Agro Industries for processing agricultural products are abundant in East Java, such as tobacco, coffee, chocolate, seafood and horticulture. Secondly, processing industries, both made of metal, bamboo, stone, wood and other lokal minerals. The growth of processing industries will create new business units that will encourage a lot of new entrepreneurs. Therefore, a priority skill that should be given to the lokal force or labor force is the skill in the field of aquaculture, and processing, as well as plant management. The technology required to support the accelerated development of the industry, according to respondents apart Appropriate Technology (TTG) for people who will be the supplier (second layer) of the company, also advanced technologies that will get support from the government, because according to respondents, the lokal government must have some sort enterprises (incorporated district), which acts as the marketer of the products produced by the community, especially for the export market. Keywords : Lokal workforce, Asean Economic Community (AEC)

PENGARUH BEBAN KERJA DAN KARAKTERISTIK INDIVIDU TERHADAP KINERJA PERAWAT MELALUI BURNOUT SEBAGAI VARIABEL INTERVENING PADA PT. NUSANTARA MEDIKA UTAMA RUMAH SAKIT PERKEBUNAN (JEMBER KLINIK) Kusumaningrum, Indah Yulia; Sunardi, Sunardi; Saleh, Chairul
BISMA: Jurnal Bisnis dan Manajemen Vol 10 No 3 (2016)
Publisher : Jurusan Manajemen Fakultas Ekonomi dan Bisnis

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Abstract : This research aims to understand the influence of workload and characteristic of individuals against the performance of the nurse throught burnout in PT. Nusantara Medika Utama Rumah Sakit Perkebunan (Jember Clinic). This research using primary data obtained from the answers of the respondents over kuisioner used in research . The method of analysis the data used in this research was analysis a track ( path analysis ). The method of sampling using census. Population in this research were nures permanent part in -patient service with 57 people. The result of this research is workload and characteristics of individual have positive significant effect on burnout and performance nurse and burnout have negative significant effect on performance of nurse PT. Nusantara Medika Utama Rumah Sakit (Jember Klinik).Keywords: Workload, Characteristic of inidviduals, Performance, Burnout

IMPLEMENTASI PEMBELAJARAN SECARA DARING DI SEKOLAH DASAR ERA PANDEMI COVID-19 Saleh, Chairul
Spektrum Analisis Kebijakan Pendidikan Vol 10, No 4 (2021): Spektrum Analisis Kebijakan Pendidikan
Publisher : Fakultas Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/sakp.v10i4.17785

This study aims to describe the implementation of online learning, as well as identify the supporting factors and inhibiting factors for online learning in the era of the COVID-19 pandemic at SD Negeri Samirono. The research method is descriptive with a qualitative approach. The research subjects were principals, committees, schools, teachers, guardians of students and students. Data collection techniques are observation, interviews, and documentation. The data analysis technique uses the theory of Miles, Huberman Saldana. The validity of the data used triangulation of sources and techniques. The results of the study show 1) Implementation of online learning in the era of the covid-19 pandemic at SD Negeri Samirono, seen from the aspects of (a) Communication, verbally and in the media, (b) Human resources for all components involved in implementing policies in schools, financial resources from government assistance in the form of study quotas, resources for laptops and wi-fi availability in schools, (c) Disposition, ready and committed, (d) The bureaucratic structure adjusts to the school's organizational structure. 2) Supporting Factors (a) high teacher commitment (b) quota assistance, (c) adequate school infrastructure, (d) flexible online learning. 3) Inhibiting factors (a) Inadequate student infrastructure, (b) limited quota assistance, (c) students find it difficult to understand lessons, (d) students are late in submitting assignments, (e) lack of parental assistance.

TEST PHYTOCHEMICAL, TOXICITY AND ANTIBACTERIAL ACTIVITY FRACTION LEAF EXTRACT VARIOUS MAHANG (M acarang apruinosa (Miq.) Mull. Arg.) AGAINST Escherichia coli AND Staphylococcus aureus Mustafidah -; Chairul Saleh; Alimuddin -
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2014
Publisher : PROSIDING SEMINAR KIMIA

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Phytochemical, to xicity and antibacterial act ivity tests of total extract, fractions of n-heksana, ethyl acetate and ethanol-water fro m mahang leaf (Macaranga pruinosa (M.) M. A.) fro m KRUS (Kebun Raya Unmul Samarinda), East Kalimantan has been carried out. Based on the secondary metabolites phytochemical test of the (Macaranga pruinosa (M.) M. A.) leaf show that total extract is contain alkaloid and steroid. n-hexane fraction is contain alkaloid and steroid. Ethyl acetate fract ion is contain steroid. Ethanol-water fract ion is contain alkaloid and phenolic. Brine shrimp lethality test values obtained Lethal Concentration 50 % (LC 50 ) total extract 27,5036 ppm , n-heksana fraction 12,0773 pp m, ethyl acetate fraction 23719,2305 ppm and ethanol-water fraction 250,0384 ppm. Antibacteria act ivity test of extracts for Staphylococcus aureus bacteria (positive Gram) and Escherichia coli (negative Gram) minimum inhibitor consentration of 0-1 % (b/v) fro m ext ract fractions of n-heksana and fractions ethyl acetate for Staphylococcus aureus bacteria and fractions ethyl acetate for Escherichia coli bacteria.

STUDI DOCKING MOLEKULAR SENYAWA KUERSETIN DAN HESPERITIN SEBAGAI INHIBITOR SEL KANKER DENGAN AUTODOCK VINA Hevin Muttaqin; Chairul Saleh; Rahmat Gunawan
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2013
Publisher : PROSIDING SEMINAR KIMIA

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Kuersetin dan Hesperitin merupakan turunan dari senyawa Flavonoid yang berbeda kelas, Kuersetin kelas Alkohol, sedangkan Hesperetin kelas Alkanon. Docking Molekular, suatu ilmu penelitian secara in silico atau via perangkat lunak (program komputer) dan ditujukan untuk memprediksikan interaksi antara ligan (key) dengan reseptor (lock) dari ikatan hidrogen yang terbentuk. Autodock VINA adalah salah satu program Docking Molekular yang ada, diciptakan oleh Dr. Oleg Trott untuk meningkatkan efisiensi waktu pengerjaan dan akurasi dalam analisa. Dalam penelitian ini masing-masing dari senyawa Kuersetin dan Hesperitin akan di-Docking terhadap dua macam contoh reseptor, sel kanker otak (1S63) dengan ligan aslinya 778 dan sel kanker paru-paru (2ITO) dengan ligan aslinya IRESSA, terlebih dahulu dilakukan optimasi geometri, minimisasi energi juga validasi metode. Penelitian iniditujukan untuk menjelaskan perbandingan Kuersetin, Hesperitin dan ligan-ligan asli sebagai kandidat bahan obat anti kanker. Percobaan Docking, memberikan hasil Kuersetin dan Hesperitin membentuk ikatan hidrogen terhadap asam amino dari masing-masing reseptor. Hal ini menunjukkan bahwa Kuersetin dan Hesperitin memiliki kemampuan sebagai inhibitor, terutama pada sel kanker paru-paru (2ITO), karena potensi keduanya lebih baik dari ligan IRESSA. Walaupun Kuersetin dan Hesperitin tak memiliki potensi lebih baik dari ligan 778 pada sel kanker paru-paru, keduanya masih dapat digunakan sebagai bahan obat alternatif dari anti kanker.

UJI FITOKIMIA, TOKSISITAS DAN AKTIVITAS ANTIOKSIDAN ALAMI DAUN TUMBUHAN KELAKAI (Stenochlaena palustris) DENGAN METODE DPPH Bonita Tahir; Chairul Saleh; Subur P Pasaribu
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2013
Publisher : PROSIDING SEMINAR KIMIA

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The phytochemical test, brine shrimp lethality test and activity antioxidant test and secondary metabolits of kelakai(Stenochlaena Palustris) leaves have been researched. The leaves samples are extract with solvent methanol by masseration method and that is concentrated by using rotary evaporator. The methanol crude extract obtained are fractioned with solvent n-hexane and. Solvent ethyl acetat.Based on secondary metabolits phytochemical test of kelakai leaves showed that methanol raw extract contains steroid, alkaloid and flavonooid. n-hexane fraction extract contains steroid and alkaloid Ethyl acetat fraction extract contains alkaloid, steroid, flavonoid and saponin.In brine shrimp lethality test, the increase larvae death and data was yielded recorded and processed using SAS Probit Analysis to determine the lethal concentration 50 % (LC 50 ) value. The results of this test obtained data and showed that the most active fraction is ethyl acetat fraction extract withvalue of LC 50 was equel to 88,8477 ppm.Based on the antioxidant activity conducted by scavenging activity of DPPH usedspectrophotometry. Based on the result be held researched was obtained that Inhibition Concentration 50% (IC 50 ) that methanol raw extract value of 185,92 ppm, n-hexane fraction value of 520,64 ppm and athyl acetat fraction 107,49 ppm and vitamin C is value of 3,064 ppm, can be axpressed that the result of this test showed that the most active fraction is ethyl acetat with value of IC 50 equel to 107,49 ppm.

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
Publisher : PROSIDING SEMINAR KIMIA

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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.

PROFIL TUMBUHAN SIKKAM (Bischovia javanica Blume) Karolina Sinukaban; Chairul Saleh; Daniel Daniel
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
Publisher : PROSIDING SEMINAR KIMIA

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Penelitian tentang uji toksisitas dan uji aktivitas antioksidan ekstrak kulit batang tumbuhan sikkam (Bischovia javanica Blume) telah dilakukan. Hasil dari uji fitokimia pada kulit batang tumbuhan sikkam mengandung senyawa metabolit sekunder yaitu senyawa fenolik, flavonoid dan triterpenoid. Berdasarkan hasil uji toksisitas dengan metode BSLT (Brine Shrimp Lethality Test) pada ekstrak kasar metanol diperoleh nilai LC50 sebesar 56,92 ppm yang menunjukkan tingkat toksisitas yang toksit sehingga dapat dimanfaatkan sebagai obat antikanker. Berdasarkan hasil uji aktivitas antioksidan dengan metode DPPH menunjukkan pada ekstrak kasar metanol diperoleh nilai IC50 sebesar 9,1878 ppm. Dari hasil uji antioksidan diketahui bahwa pada ekstrak kasar metanol kulit batang tumbuhan sikkam memiliki aktivitas antioksidan yang sangat kuat dengan nilai IC50 sebesar 9,1878 ppm. Kata Kunci: Sikkam (Bischofia javanica Blume), Uji Fitokimia, Uji Toksisitas, Uji Aktivitas Antioksidan, DPPH (1,1-diphenyl-2-picrylhidrazyl)

Co-Authors Agung Prasetyo Ajeng Kartini Akbar, Fath Ali Alimuddin - Alimuddin - Alimuddin Alimuddin Alpina Nora Kaban Ami, Suyatmi Ana Arum Sari Ana Arum Sari, Ana Arum Ardiansyah - Ardiansyah - Arifah, Churniati Nur Arwidhiah, Nanda Ary Rizki Darmawi Ary Rizki Darmawi, Ary Rizki Aulia Husna Rabbani Azhar Seli Apriani Azhar Seli Apriani, Azhar Seli Barikah, Kuni Z. Bastara, Dimas B. Bohari Yusuf Bonita Tahir Daniel Daniel - Daniel - Daniel -, Daniel Daniel Daniel Daniel Daniel Daniel Daniel Daniel Tarigan Deni Karisnawati Dessy Karlina Desy Ridho Rahayu Dewi, Camelia Eugenia Djihan Ryn Pratiwi, Djihan Ryn Dwi Fitria Sari Dwi Perwitasari Wiryaningtyas, Dwi Perwitasari Eci Endang Sinulingga Eko Haryanto Eko Haryanto Elean, Samuel Ema Desia Prajitiasari Erwin - Erwin - Erwin E Erwin Erwin Erwin Erwin Erwin Erwin Eva Marliana, Eva Fadillah, Fahmi Farhany, Farhany Farida Amir Farida Amir, Farida Fauziah, Nadiya Ayu Hairani, Rita Hammamiyah, Ulinnuha Hamsiana - Hevin Muttaqin Husnul Chatimah Indra Masmur Izkia Mawaddah Jaya, Edi Novian Juwita, Retno Karolina Sinukaban KHOIRUN NISAK Kusumaningrum, Indah Yulia Kusumawardani, Niken Lembang, Darmita Tiku Lutfiana Devi Kurnia M.Riza Agus Pramana Magdaleni Agustina Rahayu Magdaleni, Agustina R. Magdaleni, Agustina Rahayu Marsella, Virna Rindra Masmur, Hestina Medi Hendra, Medi Mira Wahyuni Mira Wahyuni, Mira Muhammad Rivai Mujahidin1, Muhamad Mustafidah - Mustafidah -, Mustafidah Mutma Inna Nadhirah - Natalia, Princessa Noor Hindryawati, Noor Nugraheni, Dyah Ayu Nur Aina Nur Aini Haryati Nuranda, Apri Nyoman Gede Krishnabudi Oman, Aries Panannangan, Josua K. Pangaribuan, Fransiscus X. Rico Pindan, Neli Peni Prabowo, Rachmat Udhi Pratiwi, Ricka Indria Precelia, Sari Clara Priyanto, Fajar Wahyu Purnamie Titisari Purwanti, Gettik Andri Puspita, Leonita Dwi Puspitasari, Intan Dessy Rachman, Ferry Aditya Rahmat Gunawan RAHMAT GUNAWAN Ramadhan, Aulia Ravensca, Irene Rindawati, Novi Ritbey Ruga Ritson Purba, Ritson Rochman, Mayasari Azhari Rohmat Hidayat Rohmat Hidayat Rudi Kartika, Rudi Ruga, Ritbey Ryn Pratiwi, Djihan Saibun Sitorus Sandra, Putri Ayu Sanjaya, I Made Duwi Septi Roro Liniawati Simatupang, Eliene Br. Siti Maimunah Sitompul, Citra Uli Soma, Yolanda V. A Subagyono, RR Dirgarini Julia Nurlianti Subur P Pasaribu Sulistiawati, Iqlimah Sulistiyawati, Rizki Ramadhani Sumarni, Feni Sunardi Sunardi Susanto, Arnis Budi Syafriyanti, Yuly Theresia Susetyarsi Tri Novianti Tria Annisa Rizky Ulfa Mutia Ulfa Mutia, Ulfa Ulfa, Yulyanti Sartika Wahyu Pratama Wajdie, Farid Winni Astuti Winni Astuti, Winni Yuli Yana

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