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Repositori Institusi
Penanggalan 14C untuk menentukan umur pelapukan tanah dengan metode radiokarbon
Penanggalan 14C untuk menentukan umur sampel karbon selama ini dilakukan dengan metode sintesis benzena (C6H6). Dengan metode ini dapat dianalisis satu sampel dalam sehari dengan biaya bahan yang relatif tinggi. Akhir-akhir ini telah dikembangkan
me...
Repositori Institusi
Modul pembelajaran kimia SMA kelas XI: dampak reaksi pembakaran hidrokarbon
Pada modul ini akan dibahas mengenai reaksi pembakaran hidrokarbon sehingga siswa diharapkan mau ,emahami reaksi pembakaran hidrokarbon yang sempurna dan tidak sempurna serta sifat zat hasil pembakaran (CO2, CO, partikulat karbon).
Repositori Institusi
E-modul kimia Kelas X: bentuk molekul
Dalam kehidupan sehari-hari kita menemukan senyawa berupa gas, seperti gas metana (CH4), gas karbondioksida (CO2), dan gas oksigen (O2), sementara ada zat kimia yang berupa zat cair seperti air (H2O) dan alkohol (C2H5OH). Lalu apa yang
mempengaruhi ...
Repositori Institusi
Perbaikan panel-panel bodi untuk SMK/MAK kelas XI semester 1
Ruang lingkup dalam pembahasan buku teks ini berkenaan dengan pengetahuan dan keterampilan yang dibutuhkan dalam pekerjaan perbaikan bodi otomotif yang meliputi cara pengelasan dengan gas oxyacetylene (karbit) dan las titik, pengelasan CO2 (MIG) dan ...
Repositori Institusi
E-modul kimia Kelas XI: dampak reaksi pembakaran hidrokarbon
Reaksi pembakaran hidrokarbon dibedakan menjadi dua yaitu pembakaran yang sempurna dan pembakaran tidak sempurna. Reaksi pembakaran hidrokarbon yang tidak sempurna akan menyebabkan terjadinya polusi udara. Dampak pembakaran tidak sempurna senyawa hid...
Repositori Institusi
Perbaikan panel-panel bodi untuk SMK/MAK kelas XI semester 1
Buku Teks Bahan Ajar Siswa SMK Pengelasan Bodi Otomotif merupakan buku ke 3 dari 6 buku yang mendukung pencapaian kompetensi dalam paket keahlian Teknik Perbaikan Bodi Otomotif. Buku Teks Bahan Ajar Siswa ini bertujuan memberi bekal pengetahuan dan k...
Jurnal Institusi
Synthesis and Characterization of Oligomer 4-Vinylpyridine as A Corrosion Inhibitor for Mild Steel in CO2 Saturated Brine Solution
Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 198-207
In this work, the oligomer of 4-vinylpyridine designated as O(4-VP) was synthesized by hydrogen peroxide initiated chain growth polymerization and characterized in terms of molecular weight and structure by matrix assisted laser desorption ionization...
Jurnal Institusi
Thermodynamic and Kinetic Study of Zinc bis-(Dipalmithyl Dithiophosphate) Activity as Anti-Corrosion Additive-Fatty Acid Based Through Potentiodynamic Polarization Technique
Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 214-221
Zinc bis-(dipalmithyl dithiophosphate) (ZDTP16) is one product variant of zinc dialkyl dithiophosphate (ZDTP)-fatty acid based having function as corrosion inhibitor. By using 3% of effective dose for the application, its effectiveness of ZDTP16 corr...
Jurnal Institusi
Synthesis of Zeolite-X Supported On Glasswool for CO2 Capture Material: Variation of Immersion Time and NaOH Concentration at Glasswool Activation
Indonesian Journal of Chemistry; Vol 16, No 1 (2016); 1-7
Zeolite X supported on fiber material (glasswool) was successfully synthesized using a simple hydrothermal method. Variation of immersion time and NaOH concentration were used for glasswool activation. Activation process of glasswool has effects towa...
Jurnal Institusi
Purification and Characterization of Amyloglucosidase Enzyme from the Thermophilic Endomycopsis fibuligera Using Sago Starch as a Substrate
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 302-307
An investigation on purification and characterization of amyloglucosidase enzyme from Endomycopsis fibuligera by fermentation of sago starch has been carried out. This enzyme is inductive and can be produced by fermenting sago starch in a medium cont...
PubMed
10-year natural carbonation data of concretes with limestone, fly ash, volcanic ash, and slag and exposed to tropical climate in India
Data Brief
The adoption of supplementary cementitious materials (SCMs) as a partial replacement of Ordinary Portland Cement (OPC) is increasing in anticipation of reducing the carbon footprint of cement and concrete industry. The resistance of concretes with SC...
PubMed
Analysis and Comparison of the Corrosive Behavior of Nickel-Based and Cobalt-Based Dental Alloys
Materials (Basel)
Nickel-based and cobalt-based metal alloys are frequently used in dentistry. The introduction of various elements in the alloy changes its characteristics, and a thorough study of each alloy should be completed to determine its appropriate corrosion ...
PubMed
Transcutaneous CO(2) versus end-tidal CO(2) in neonates and infants undergoing surgery: a prospective study
Med Devices (Auckl)
Aim: End-tidal CO(2) (Et(CO2)) is the standard in operative care along with pulse oximetry for ventilation assessment. It is known to be less accurate in the infant population than in adults. Many neonatal intensive care units (NICU) have converted t...
PubMed
Partitioning of the Leaf CO2 Exchange into Components Using CO2 Exchange and Fluorescence Measurements.
Plant Physiol
Photorespiration was calculated from chlorophyll fluorescence and ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) kinetics and compared with CO2 evolution rate in the light, measured by three gas-exchange methods in mature sunflower (Helian...
PubMed
Effect of CO2 on the fermentation capacities of the acetogen Peptostreptococcus productus U-1.
J Bacteriol
The fermentative capacities of the acetogenic bacterium Peptostreptococcus productus U-1 (ATCC 35244) were examined. Although acetate was formed from all the substrates tested, additional products were produced in response to CO2 limitation. Under CO...
PubMed
Inhibition of peritoneal dissemination of colon cancer by hyperthermic CO2 insufflation: A novel approach to prevent intraperitoneal tumor spread
PLoS One
BACKGROUND: The increasing use of laparoscopic surgery for advanced gastrointestinal cancer raises concerns about intra-peritoneal tumor spread. Prevention of peritoneal dissemination is extremely important but a preventive modality is lacking. The a...
PubMed
Estimation of Bundle Sheath Cell Conductance in C4 Species and O2 Insensitivity of Photosynthesis.
Plant Physiol
Low conductance to CO2 of bundle sheath cells is required in C4 photosynthesis to maintain high [CO2] at the site of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco). Elevated [CO2] allows high CO2 assimilation rates by this enzyme and preve...
PubMed
Binding of substrate CO2 to the active site of human carbonic anhydrase II: a molecular dynamics study.
Proc Natl Acad Sci U S A
Molecular dynamics has been used to study binding of substrate CO2 to the active site of human carbonic anhydrase II. Three potential CO2 binding sites have been located. The first is at the active-site hydrophobic pocket (the catalytically productiv...
PubMed
Direct and Indirect Effects of Atmospheric Carbon Dioxide Enrichment on Leaf Respiration of Glycine max (L.) Merr.
Plant Physiol
Long-term and short-term effects of CO2 enrichment on dark respiration were investigated using soybean (Glycine max [L.] Merr.) plants grown at either 35.5 or 71.0 Pa CO2. Indirect effects, or effects of growth in elevated CO2, were examined using a ...
PubMed
The oxygen and carbon dioxide compensation points of C3 plants: possible role in regulating atmospheric oxygen.
Proc Natl Acad Sci U S A
The O2 and CO2 compensation points (O2 and CO2) of plants in a closed system depend on the ratio of CO2 and O2 concentrations in air and in the chloroplast and the specificities of ribulose bisphosphate carboxylase/oxygenase (Rubisco). The photosynth...
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