Efek Suhu Terhadap Pembentukan Besaran Butiran Arang Karbon Tempurung Kelapa Sawit

Research has been carried out using x-ray diffraction analysis and analysis of Atomic Energy Dispersive X-Ray (EDAX) on a sample of oil palm shell carbon. X-ray diffraction spectrum of a sample of oil palm shell carbon has an amorphous structure with two peaks in the energy intensity of 639 AU and 232AU (Arbitari Unit). The elements contained in the oil palm shell carbon containing elements other than carbon C amounted to 98.48% of other elementsthat are also contained 0.71% Si silicon. EDAX analysis of the percentage obtained on the building blocks of atomic carbon C is approximately 99.69% and 0.31% Si silicon. SEM analysis obtained by cross-sectional shape is irregular, so it can be concluded that oil palm shell carbon is amorphous, and visible changes in the peak position, width and height of the temperature difference diffractogramto the formation of massive carbon charcoal granules

Adoption and impacts of zero tillage as a resource conserving technology in the irrigated plains of South Asia

Zero tillage / Rice / Wheat / Water conservation / India / Pakistan / Haryana / Punjab

A Rare Case of Foreign Body Ingestion, Mimicking as Mesenteric Cyst. "Case Report"

Background: Foreign body ingestion by children is a commonly encountered problem and accounts for a significant emergency visits among pediatric population. Although these ingested foreign bodies pass spontaneously and uneventfully, a subset of such bodies may become trapped in the digestive tract, eventually leading to significant injury. Most of these bodies are radio-opaque and detectable radiologically, but some radio-lucent may become a diagnostic dilemma and subtle management issue. Case Report: We report a case of a one-year girl who presented after accidental ingestion of foreign body with signs and symptoms of acute intestinal obstruction. Initially we were unable to diagnose the cause, but later the radiological investigation suspected a mesenteric cyst. After failure to respond to conservative measures she underwent exploratory laparotomy, and a jelly ball was removed from the gut. The patient had uneventful post-operative recovery and was kept on follow-up for three months without any complication. Conclusion: These patients do not respond to conservative measures and need surgery on an emergency basis. It is likely that if left untreated may have caused Intestinal perforation and irreversible shock. Radiolucent foreign bodies are difficult to diagnose and need high level of suspicion. Need of the hour is to educate the parents to be extra vigilant as “prevention is better than cure”

Efek Aditif Bi2o3 Terhadap Mikrostruktur Dan Koefisien Non Linear Varistor Zno.

The varistor ZnO has been made by using raw materials: ZnO (E-Merck) and additive 0 %, 2.5 %, 5%, 7.5%, and 10% wt. Bi2O3. The important property of varistor ZnO is coefficient of non linier () and it can give influence correlation between current I and voltage V

Penelitian Berbagai Jenis Kayu Limbah Pengolahan Untuk Pemilihan Bahan Baku Briket Arang

The waste of timber industry can be utilized to produce some valuable products. A research had been conducted to study such possibility. The research was to study the conversion of wood into charcoal briquetting using adhesive or heatingprocess. Result showed that the heating value of charcoal briquetting made from kempas wood (koompassia malaccensis maing), meranti (shorea spp.) and pulai (alstonia spp) increases significantly compared to that of raw material. The product made from kempas wood (koompassia malaccensismaing.) was formed to have the highest energy per cc (density) followed by those of made of meranti (shorea spp.), ramin (gonystylus bancanus kurz.). However, raw material availability must be consideret in establishing charcoal briquetting industry

ER/K linked GPCR-G protein fusions systematically modulate second messenger response in cells.

FRET and BRET approaches are well established for detecting ligand induced GPCR-G protein interactions in cells. Currently, FRET/BRET assays rely on co-expression of GPCR and G protein, and hence depend on the stoichiometry and expression levels of the donor and acceptor probes. On the other hand, GPCR-G protein fusions have been used extensively to understand the selectivity of GPCR signaling pathways. However, the signaling properties of fusion proteins are not consistent across GPCRs. In this study, we describe and characterize novel sensors based on the Systematic Protein Affinity Strength Modulation (SPASM) technique. Sensors consist of a GPCR and G protein tethered by an ER/K linker flanked by FRET probes. SPASM sensors are tested for the β2-, α1-, and α2- adrenergic receptors, and adenosine type 1 receptor (A1R), tethered to Gαs-XL, Gαi2, or Gαq subunits. Agonist stimulation of β2-AR and α2-AR increases FRET signal comparable to co-expressed FRET/BRET sensors. SPASM sensors also retain signaling through the endogenous G protein milieu. Importantly, ER/K linker length systematically tunes the GPCR-G protein interaction, with consequent modulation of second messenger signaling for cognate interactions. SPASM GPCR sensors serve the dual purpose of detecting agonist-induced changes in GPCR-G protein interactions, and linking these changes to downstream signaling

Analisis Konsentrasi Logam Berat (Cu, Fe, Zn) Konduktivitas Listrik dan Densitas Air Sungai Gaung di Desa Semambu Kuning Kecamatan Gaung Kabupaten Indragiri Hilir

A research has been done on analysis of concentration of heavy metals (Cu, Fe, Zn) electrical conductivity and density of the Gaung river water. The method that used in this research was an experimental. The samples of Gaung river water in the village of Semambu Kuning was taken three times in each point: the Dusun Terentang, Dusun Sejahtera, and Dusun Mulia. Measurement of the concentration of heavy metals was performed by using Atomic Absorption Spectroscopy(AAS), while the electrical conductivity measurements were performed using conductivitymeter and density was measured by using a hydrometer. The results showed that the concentration of iron(Fe) from each points was 1.28x10-6 kg/l, 1,25x10-6 kg/l, and 1,32x10-6 kg/l, respectively. Concentrations of copper(Cu) oneach points was 0.0015x10-6 kg/l, 0.0051x10-6 kg/l, and 0.0053x10-6 kg/l. Concentrations of Zn(zinc) was found to be 0.0310x10-6 kg/l, 0.028x10-6 kg/l, and 0.0337x10-6 kg/l. which the electrical conductivity was 192,33x10-4 mho/m, 197,23x10-4 mho/m, and 199,9x10-4 mho/m. Otherwise the average density of the river water was 1166.7x10-3 kg/m3, 1200x10-3 kg/m3, and 1233.3x10-3 kg/m3, respectively for point 1, 2, and 3

Pembuatan dan Karakterisasi Karbon Aktif dari Bambu Betung dengan Aktivasi Menggunakan Activating Agent H2o

Research on syinthesis of activated carbon has been conducted from bamboo betung with carbonization temperature of 400°C, 500°C and 600°C with duration time of 20, 40 and 60 minutes, respectively. Physical activation was carried out at 900°C for 20, 40, and 60 minutes with H2O steam as an activating agent. Bamboo betung characteristics as activated carbon was studied by analyzing shrinkage mass levels, proximate test, activated carbon absorption of the iodine and yield. Increasing of mass shrinkage was proportional to carbonization time. the higher carbonization temperature, the smaller water content and the greater content of ash. The higher temperature time resulted the higher value of iodine, and the longer activation time could decreased the yield. The best results of activated carbon was obtained at a temperature of 600°C in 60 minutes with shrinkage levels of mass of 69%, 3.8% of moisture content, 8.1% of ash contents and 31.5% of yield. Whereas the iodin number was found to be 379 mg/g

Analisis Gelombang Akustik terhadap Pengaruh Tekanan Casing dan Gas Heterogen untuk Menentukan Kedalaman Liquid Level Sumur Minyak Menggunakan Data Sonolog

A research has been done in analyzing an acoustic wave and its effect to casing pressure and gas flow at annulus in order to determine liquid level depth of oil well. The research used an experiment method using sonolog type remote fire gas gun with its sound wave frequency between 30 Hz – 60 Hz. Data were taken from three oil wells that are managed by the Unit of business Pertamina EP Lirik. Each well was measured five times at different time. The data obtained were analyzed by Total Well Management (TWM) software. They were acoustic velocity, casing pressure, and gas flow. The value of acoustic velocity shown by TWM sometimes didn\u27t match to the real condition including the data of determined liquid level depth. New value of acoustic velocity had been gotten using multiple regression linear equation. Time travel of wave was measured using Down Hole Marker at TWM. Result of calculation of acoustic velocity based on measured data for well LS-031 at November 24th 2011 was 397,7138 m/s, for well LS-105 measured at March 13th 2010 was 359,6792 m/s, for well LS-105 measured at November 25th was 356,17 m/s. Results of calculation of liquid level depth for well LS-031 was 249,9634 m, for well LS-105 was 261,23 m, and for well LS-097 was 246,96 m