Judul: Optimasi Kombinasi Simplisia Keladi Tikus, Temu Ireng, dan Temulawak sebagai Kandidat Sediaan Jamu Antikanker Payudara.
Abstrak: Kanker merupakan salah satu penyakit yang membahayakan dan menjadi masalah kesehatan terbesar bagi masyarakat dunia. Keladi tikus, temu ireng, dan temulawak merupakan tanaman tradisional yang berpotensi sebagai antikanker. Penelitian ini bertujuan melakukan optimasi kombinasi simplisia keladi tikus, temu ireng, dan temulawak dalam berbagai respon. Metode penelitian ini terdiri dari preparasi dan ekstraksi, pengukuran total fenol, pengukuran total flavonoid, uji antioksidan, Brine Shrimp Lethality Test (BSLT), dan uji antiproliferasi terhadap sel MCF-7 dan sel Vero. Analisis seluruh hasil penelitian dilakukan berdasarkan model Simplex Centroid Design dengan Design Expert. Nilai optimum titik optimasi diperoleh pada kombinasi simpilisa keladi tikus dan temulawak dengan perbandingan 0.303:0.697. Hasil tertinggi yang akan diperoleh berdasarkan titik optimasi, yakni total fenolik sebesar 66.14 mg GAE/g, flavonoid 32.27 mg QUE/g, antioksidan DPPH 98.12%, antiproliferasi sel MCF-7 sebesar 52.17%, dan antiproliferasi sel Vero sebesar 6.86%.
Keyword: Antioksidan, antiproliferasi, sel MCF-7, sel Vero, fenolik, flavonoid

Judul: Molecular Docking of Compounds of Ethanol Extract of Temu Ireng Rhizome (Curcuma aeruginosa Roxb.) as Antioxidant and Anticancer.
Abstrak: Kanker merupakan salah satu jenis penyakit berbahaya yang mengalami peningkatan kasus setiap tahunnya. Radikal bebas merupakan penyebab mutasi gen yang dapat memicu kanker. Kanker akan berkembang tanpa terkendali karena terjadinya disregulasi siklus sel dan adanya senyawa pemicu proliferasi sel serta penghambat proses apoptosis. Pengobatan kanker dilakukan dengan memberikan inhibitor cyclin dependent kinase2 (CDK2) dan cyclooxygenase-2 (COX-2) untuk menghambat perkembangan kanker, serta inhibitor lipoxygenase (LOX) untuk menghambat pembentukan radikal bebas. Tanaman temu ireng diketahui memiliki potensi sebagai antioksidan dan antikanker. Penelitian ini bertujuan mengetahui interaksi molekuler antara senyawa dominan ekstrak etanol temu ireng dengan CDK2, COX-2, dan LOX sebagai reseptor. Jenis interaksi ligan dengan reseptor ditentukan melalui parameter energi afinitas (ΔG), konstanta inhibisi (Ki), jenis interaksi dan persentase binding site similarity (%BSS). Hasil penelitian menunjukkan bahwa senyawa uji gajutsulacton A memiliki potensi terbaik dalam menghambat CDK2. Senyawa uji cucumenol berpotensi sebagai inhibitor COX-2 tetapi tidak terdapat senyawa yang dapat menghambat LOX dengan baik sebagai antioksidan., Cancer is one type of dangerous disease that is increasing every year. Free radicals are the cause of gene mutations which can lead to cancer. Cancer will develop uncontrollably due to the dysregulation of the cell cycle and the presence of compounds which trigger cell proliferation and inhibit the process of apoptosis. Cancer treatment is carried out by giving cyclin-dependent kinase2 (CDK2) and cyclooxygenase-2 (COX-2) inhibitor drugs to inhibit cancer development, as well as lipoxygenase (LOX) inhibitor drugs for the formation of free radicals. The temu ireng plant is known to have the potential as an antioxidant and anticancer. This study aims to determine the molecular interaction between the dominant compound of temu ireng ethanol extract with CDK2, COX-2, and LOX receptors. The type of ligand interaction with the receptor was determined through the parameters of affinity energy (ΔG), inhibition constant (Ki), type of interaction, and percentage of binding site similarity (%BSS). The results showed that the test compound gajutsulacton A had the best potential in inhibiting CDK2. The test compound cucumenol may be a COX-2 inhibitor and there are no compounds that can inhibit LOX well as an antioxidant.
Keyword: Anticancer, Antioxidant, CDK2, COX-2, LOX

Judul: Utilization of terra/MODIS L1B data for analysis of horizontal wind profile in the troposphere
Abstrak: This study was concerned with horizontal wind derived from data collected with the Moderate-resolution Imaging Spectroradiometer (MODIS) on board the NASA’s Earth Observation System (EOS)-Terra satellite. The aim of this study is to develop a method for the estimation of horizontal wind movement in the troposphere based on Navier-Stokes equation. The method was applied to a calibrated and geolocated Terra/MODIS L1B 1 km data set. The data inputs to estimate surface temperature are retrieved from TIR (Thermal Infrared) bands 31 (10.780 μm to 11.280 μm) and 32 (11.770 μm to 12.270 μm). The obtained surface temperatures were later used to approximate geopotential height on a constant-pressure surface by using the modified Poisson equation. The main assumptions used are the hydrostatic equilibrium, ideal gas law, constant lapse rate and constant acceleration of gravity. Based on the distribution of geopotential height, the pressure gradient force is measured by the gradient of geopotential on an isobaric coordinate to present the horizontal wind profile. For certain topographic areas especially in the mountain ranges, there was a disadvantage of using pressure as a vertical coordinate which lead to inaccuracy. In spite of that, Terra/MODIS L1B data with 1 km spatial resolution can be used to estimate the horizontal wind movement in the troposphere.
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