This study aims to develop student worksheets based on the ARCS model on ionic equilibrium and pH of the buffer solution subject, determining the validity of student worksheets of the aspects of content, ARCS characteristics, language, presentation, graphics and find out user responses through student worksheets based on ARCS models on ionic equilibrium and pH buffer solution subject. This rese…
This study aims to produce an e-Module reaction rate based on multiple representations using sigil valid according to the validator. This type of research is research and development with referemce to thedevelopment process of ADDIE. The object of this research is a teaching material in the form of e-Module reaction rate based on multiple representations using sea digital learning (Sigil) for c…
The development of this LKPD aims to develop a valid Think-Pair-Share (TPS) type cooperative learning model based on validator and practical assessment based on user response tests, namely teachers and learners. Valid assessment is based on 5 aspects of feasibility, namely content feasibility, feasibility characteristics of TPS learning model, language feasibility, feasibility of presentation a…
This development research aims to develop LKPD based on the ARCS model which is considered valid according to the validator's assessment as well as practical based on user response tests (teachers and students). Validity is assessed based on 6 aspects of feasibility, namely the feasibility of content, the feasibility of the ARCS model characteristics, linguistic feasibility, presentation feasib…
This research aims to develop Student Activities Worksheet Based on CUPs on the Stoikiometri material for grade X SMA/MA. Student Worksheet Based are designed according to the CUPs model contens. The type of this research is research and development (R and D) with reference to the development process of 4-D. The subject pf this research is student activities worksheets based on CUPs. Instrument…
Pyrazole is a five rings of heterocyclic compounds with three carbon atoms and two nitrogen atoms in a position that adjacent each other and it has two endocyclic double bonds. Pyrazole has a pharmacological effect on humans and this compound as an important compound in the development of new drugs, one of which is an anticancer drug. Hence, in this study, the synthesis of pyrazole 5-(…
Pyrazole is a simple aromatic ring organic compound. Pyrazole is a 5 ring heterocyclic compound consisting of three carbon atoms and two nitrogen atoms in adjacent positions. Pyrazole has a wide range of biological and pharmacological activities. Chlorophenyl and naphtyl substituted pyrazole compounds was reported to have antifungal, antituberculosis and antiinflammatory bioactivity. In this st…
TiO2 (Titanium Dioxide) is one of the semiconductor compounds which has high stability, perfect photocatalyst ability and no poisoning potential as degradation of Methylene Blue. TiO2 will only be active with the help of UV rays, to overcome this weakness many ways can be done, one of them by adding material or precursors such as activated charcoal, zeolites, silica and so forth. Banana Kepok s…
Hydrazone is an organic compound that has a variety of biological activities such as antioxidant and anticancer. The active group of hydrazone compound the azomethin group (-NHN=CH-) makes this compound as an important compound in the development of new drugs. Hence, in this study, the synthesis of hydrazone 1-(naphthalene-1-ylmetilen)-2-phenylhydrazine (IFA-ND1) was obtained from …
Maredan natural clay has been used as a raw material for zeolite synthesis, but the results were not satisfying because metal impurities were still found. As a result, the purity of the zeolite produced is still relatively low. A special treatment is needed that aims to remove these impurities in the clay, namely carrying out the leaching process with acid. In this connection, post-leaching pH …
Pyrazole is a 5-ring heterocyclic compound which consist of 3 carbon atoms and 2 neighboring nitrogen atoms. Pyrazoline compound, namely 5-(4-chlorophenyl)-3-(naphthalene-2-il)-1-phenyl-4,5-dihydro-1H-pyrazole (PF CN2-2F) was synthesized using one-pot reaction method of a mixture of 2-acetyl-naphthalene compounds, 4-chloro-benzaldehyde and phenylhydrazine this reaction was catalyzed by NaOH wit…
Rukam is one of the species of Flacourtiaceae which is widely distributed in Sumatra and used as anti-diarrhea and anti-inflamatory ethnomedicine. Several species of this genus were reported to have antioxidant and cytotoxic activity. Phytochemical analysis showed that the leaf of rukam contained of flavonoids, saponins, fenolic, terpenoids and steroids. This study was aimed to isolate secondar…
Cryptomelane is a hollow type manganese oxide mineral that has a tunnel structure of 2x2. The mineral cryptomelane can be used as an adsorbent and catalyst for the degradation of organic compound wastes. The purpose of this study was to synthesize cryptomelane type manganese oxide by sol-gel method using KMnO4 and C6H8O7. The products were then treated with an acid (acetic acid) and base (KOH) …
The stem bark of Litsea glutinosa (medang lendir) from the Lauraceae family has been used as mosquito repellent by indigeneous community in Kampar Kiri Hulu Sub-District, Riau Province. This study was aimed to isolate a secondary metabolite from ethyl acetate extract of the stem bark. The ethyl acetate extract was separated by VLC to give 11 fractions. Isolation was done at fraction of 3 and is…
Plants of the Litsea genus are known to have anticancer bioactivity, anti-HIV and as cytotoxicity agents. Medang lendir (Litsea glutinosa) is a species of the Lauraceae family which is commonly found in tropical and sub-tropical regions. The local people uses the bark to repel mosquitoes by burning its stem barks. Phytochemical tests to this barks showed the presence of secondary metabolites of…
Coleus hybridus, also known as miana merah, is a traditional medicinal plant of the genus Coleus from the family Lamiaceae or Labiatae. This plant possess various bioactivities such as antioxidants, antibacterial, antivirus and anti-inflamation. The purpose of this research was to isolate and toxicity assay secondary metabolites from dichloromethane (DCM) extract of the aerial parts of this pl…
Coronavirus disease or Covid-19 is a disease caused by a new type of corona virus, SARS-CoV-2. This disease first appeared in Wuhan, China and has now become a pandemic in the world. This study aims to find compounds that have the potential to inhibit the main protease enzyme (Mpro) of the corona virus (PBD ID: 6LU7 and 2GTB) through a computational molecular docking modeling approach to terpen…
Flacourtia rukam is one of the species of Flacourtiaceae which is widely spread in Indonesia. This plant commonly used as traditional medicine by various tribes in Indonesia. Several species of this genus are reported ho have antimalarial, antioxidant, antibacterial, and anti-inflammatory. This study is to isolate secondary metabolite and determine the toxicity of fraction. Isolation techniques…
Mempening (L. bancanus) is a species of the family Fagaceae. It can be found on hillsides and sandy mountains to clay, but can also be found in peat swamp forests. The purpose of this study was to isolate and test the toxicity of secondary metabolites from the n-hexane fraction obtained from the leaves of the L. bancanus plant. Isolation was carried out by maceration method for 72 hours. A pure…
Kelakai (S. palustris) is an epiphytic plant that is widely used as a medicinal plant. This study aims to isolate the antioxidant active compounds contained in this species. Isolation of compounds was carried out by maceration method by using methanol and then partitioned with n-hexane to obtain n-hexane extract. The n-hexane extract was separated by using Vacuum Liquid Chromatography (VLC), fo…