MAPPAJA’ PRACTICES IN AGRICULTURAL COMMODITY TRADING IN THE DISTRICT OF WEST SINJAI, SINJAI REGENCY

This study will elaborate on the form of mappaja' trading, which is considered as an attractive economic issue as in its transactions, people do not use a system of weighing scales in trading their harvests, but with a cost estimation system for the goods. Therefore, in the trading practice, there is often a discrepancy between the harvest and the buyer’s expectation, because it may contain an element of gharar/obscurity of the goods, which can lead to an invalid transaction and harm one of the parties. This study indicated that the practice of mappaja' for agricultural commodities has occurred for a long time. The mechanism is by estimating the number of plants based on mutual trust and responsibility. The agricultural commodities used as the mappaja' objects are cloves and vegetables (carrots, cabbage, and tomatoes). The payment method in mappaja' practice is carried out in two ways, namely full payment and twice payment. Twice payment refers to the transaction where half of the payment was handed over on the agreement as a down payment and a sign of completion, then the rest of the payment were handed after the harvest. The condition of the plant is ready to harvest or not ready for harvest in the transaction of mappaja’. The rights and obligations of both parties are that traders are obliged to make payments to farmers according to the agreement and for the farmers, they have to keep taking good care of the plants if at the time of the transaction the condition of the plants is still not ready for harvest

Synthesis And Characterization Of Gold Nanoparticles Using Beluntas Leaf Extract Plucheaindica

Gold nanoparticles have been successfully synthesized using beluntas leaf extract as reducing agents. This is indicated by the change of the color from yellow gold to purple solution after the addition of the beluntas leaf extract. The gold nanoparticles formed were observed for 92 hours using uv-vis and obtained stability after 72 hours with a wavelength about 545.50-546.00 nm. The size distribution of gold nanoparticles was determined using Particle Size Analyzer (PSA) with an average distribution of 101.6 nm. Based on the characterization using XRD, the diffraction pattern obtained at 2θ is 38.1077; 44,2935; 64,5155; 77,4862 which show the presence of gold nanoparticles. Furthermore, it was characterized using SEM EDX showed that the average shape of gold nanoparticles was spherical with a composition ofAu 48%, C 43.33%, and several other elements around 8.67%

Synthesis Of Silver Nanoparticles Using Beluntas Leaf (Pluchea Indica L.) Extract

Synthesis of silver nanoparticles was carried out using environmentally Beluntas (Pluchea Indica L.) leaf extract to minimize the use of harmful chemicals. Synthesis was carried out with the ratio of AgNO3 solution and the beluntas leaf extract 90 mL : 1 mL. The process of forming silver nanoparticles was studied and monitored by observing the absorption spectrum using UV-Vis spectrophotometer. The observations showed the silver nanoparticles that was formed had SPR (Surface Plasmon Resonance) absorbance peak values at the wavelength of about 445,5 nm with an absorbance value of 3,437. The absorbance value increased with the increasing reaction time from 1 hour to 168 hours. From the result of testing using PSA, the average size of silver nanoparticles was 109.1 nm which is dispersed between 1,8 nm – 127,3 nm

PERFORMA MENCIT (Mus musculus) YANG DIBERI EKSTRAK KOLAGEN TULANG SAPI BALI SECARA PERORAL

Ekstrak kolagen merupakan salah satu turunan protein yang saat ini banyak dimanfaatkan sebagai produk food supplement. Ekstrak kolagen tulang sapi impor saat ini kebanyakan diproduksi melalui proses kimia. Penelitian tentang efek ekstrak kolagen tulang sapi yang diproduksi melalui proses kimia belum banyak dilaporkan. Penelitian ini bertujuan untuk mengkaji performa mencit (Mus musculus) yang diberi ekstrak kolagen tulang sapi secara peroral. Sebanyak 50 ekor mencit jantan dibagi secara acak menjadi 5 kelompok, masing-masing kelompok terdiri atas 10 ekor. Kelompok A diberi ekstrak kolagen dengan dosis 1.000 mg/kg bb, kelompok B (5.000 mg/kg bb), kelompok C (10.000 mg/kg bb), kelompok D (15.000 mg/kg bb) dan kelompok E (kontrol) yang diberi aquades peroral. Perhitungan potensi ketoksikan akut (LD50) terkait jumlah mortalitas, perubahan bobot badan serta penampilan gejala klinis dilakukan sampai dengan hari ke-10. Hasil penelitian menunjukkan bahwa potensi ketoksikan akut (LD50) populasi untuk dosis tertinggi belum mencapai dosis letal (50%) dari populasi, perubahan bobot badan dan gejala klinis bervariasi. Hasil akhir disimpulkan bahwa pemberian ekstrak kolagen tulang sapi bali sampai dosis 15.000 mg/kg bb pada mencit berkategori praktis non toksik (practically non toxic) dan perbedaan dosis ekstrak tidak berpengaruh terhadap perubahan bobot badan mencit sampai pengamatan hari ke-30

Analisis Kinerja Elektroda Kawat Terlapis Polipirol-Aspartat sebagai Sensor Aspartat secara Potensiometri

Penelitian tentang analisis kinerja elektroda kawat terlapis polipirol-aspartat (ESI-Aspartat) sebagai sensor aspartat secara potensiometri telah dilakukan. ESI-Aspartat dibuat dengan melapiskan polipirol-aspartat pada permukaan elektroda kawat platina dengan metode elektropolimerisasi pada larutan polipirol dalam air yang mengandung asam aspartat dan ion ClO4 - . Analisis kinerja elektroda dilakukan dengan memperhatikan faktor Nernst, limit deteksi, waktu respon, pH larutan dan koefisien selektivitas. Hasil penelitian menunjukkan bahwa ESI-Aspartat memberikan respon terbaik dengan faktor Nernst 50,19 mV/dekade pada daerah linier 10-8 M – 10-1 M, limit deteksi 2,19 x 10-8 M (0,0029 ppm) aspartat, waktu respon 15-91 detik pada pH 3. Selektivitas ESI-Aspartat pada konsentrasi asam aspartat 0,1 M tidak terpengaruh oleh adanya ion-ion asing dari asam amino lainnya seperti arginin, alanin dan asparagin yang ditunjukkan oleh koefisien selektivitas < 1

Arousing elements in children’s digital interactive storybook

This paper reports an ongoing study on making children’s digital storybook arousing.The problem being addressed in this paper is the lack of proper elements for guiding designers to incorporate into children’s digital storybook. Without the proper elements, designers tend to design digital storybook based on their preferences, instead of those usable to the children.This may lead to discouraging state when children interact with the digital storybook. To address that, this paper aims at determining the most common interface components for digital interactive storybook that make children feel aroused when interacting with. In accomplishing that, a series of field study was carried out, involving a sample of interactive digital storybook.Data were collected from 13 children aged seven to nine through observation and interview.In the end, a set of most common elements that make children aroused when interacting with interactive digital storybook were gathered

POTENTIAL NA-ALGINATE EXTRACT FROM BROWN ALGAE sargassum sp. OF THE MANGO MATURATION PROCESS

Extraction of Na-alginate from Sargassum sp. and its application in ripening mangoes has conducted. This research aimed to determine the mango storage period by using sodium alginate solution as edible coating  and optimum concentration that has maximum inhibition power to the maturation the mango. The FTIR result shows that sodium alginate by the result ofthe extraction has the same similar functional group to the sodium alginate in the factory. Quantitative analysis show that content of sodium alginate as the result of the extraction is 22,42%, sodium alginate solution is 1% has pH 10,97 and the viscosity is 90 cps, the water measure of sodium alginate is 11,27% with the measure of ash is 41,47%. By testing the ability of sodium alginate conducted on mango with submersion method in the solution concentration from 0-50 ppm. At a concentration of 20 ppm solution shows that the maximum of storage period is about 15 days at room temperature while without submersion is just about 5 days. By this study, we indicate that sodium alginate potentially as coating fruit preservation

Synthesis and Structural Analysis of Magnesium Oxide Nanomaterial Using Ethanol as Polymerization Solvent

The purpose of the study was to synthesize MgO nanomaterials using sol-gel method with ethanol as solvent and to perform structural analysis of the products. Mg-oxalate was initially prepared prior magnesium acetate. Magnesium acetate dissolved in ethanol, and the oxalic acid added to adjust pH until gel phase formed. The gel was heated at 100 C for 24 hours to produce magnesium oxalate solids. Solids was sieved using ±150 mesh then annealed at 550 C for 6 hours to produce MgO nanomaterial. The magnesium oxalate was characterized using FT-IR, XRD, and SEM. FT-IR peak at 3408.22 cm-1; 1709.35 cm-1; 1375.39 cm-1; 830.32 cm-1; 420.48 cm-1, and the XRD peak 17.95o; 22.97o; 25.02o; 27,94o; 35.10o; 37,63o; 44.16o were characteristic of Mg-oxalate. Meanwhile, FT-IR band at 1030.24 cm-1; 2358.94 cm-1; 1627.92 cm-1; 1417.66 cm-1; 437.84 cm-1, and XRD peak at 38.92o; 43.3o; 56.02o; 62.64o; 74.88o and 79.04o shows characteristic of MgO nanomaterial. Structure analysis shown the MgO nanomaterials has an average crystal size 8.11 nm, and lattice length 21.21 nm. The values of strain, stress, energy density crystal and dislocation density of the MgO are 5.3 x 10-5 MPa, 32.97 MPa, 154.81 J/nm2, 1.52 x 10-3 nm-2 respectively. Morphologically the MgO nanomaterial produced is cubic

Synthesis and Characterization Of Silver Nanoparticles Using Water Extract of Sarang Semut (Myrmecodia pendans) For Blood Glucose Sensors

The principles of green chemistry in nanotechnology is one of the key issues in nanoscience research. Biosynthesis of nanoparticles using plant extract is an eco- friendly approach which eliminates the need for using physical and chemical techniques. A green synthetic route for the production of stable silver nanoparticles (AgNPs) by using aqueous silver nitrate as metal precursor and Myrmecodia pendans extract as bioreductor and PVA as stabilizer is being reported for the first time. In this case, the synthesis of silver nanoparticles (AgNPs) was carried out by reduction method. The bio-reduction and stabilization of so formed silver nanoparticles was monitored by UV-Vis spectrophotometry. Maximum absorption of AgNPs using Polyvinyl Alcohol (PVA) was at wavelength 408.50 nm, whereas that of AgNPs without using PVA was at wavelength of 408 nm. SEM images showed that the morphology of AgNPs was globular. An average size of silver nanoparticles using PVA and without using PVA was 78.3 and 76.1 nm, respectively. The results of X-Ray Diffraction (XRD) displayed the same peak pattern with that of the standard silver metal showing that the resultant particles are silver nanoparticles having FCC structure. Analysis of glucose levels in blood using silver nanoparticles based sensors showed glucose concentration of 71.71 mg / dL

Digital Video Inpainting Detection Using Correlation Of Hessian Matrix

The use of digital video during forensic investigation helps in providing evidence related to crime scene. However, due to freely available user friendly video editing tools, the forgery of acquired digital videos that are used as evidence in a law suit is now simpler and faster. As a result, it has become easier for manipulators to alter the contents of digital evidence. For instance, inpainting technique is used to remove an object from a video without leaving any artefact of illegal tampering. Therefore, this paper presents a technique for detecting and locating inpainting forgery in a video sequence with static camera motion. Our technique exploits statistical correlation of Hessian matrix (SCHM) to detect and locate tampered regions within a video sequence. The results of our experiments prove that the technique effectively detect and locate areas which are tampered using both texture and structure based inpainting with an average precision rate of 99.79% and an average false positive rate of 0.29%