Marketing Analysis of Striped Catfish Pond Cultivation in Basarang Village Basarang Sub-district Kapuas Regency Central Kalimantan

This present study aims to determine the marketing system of catfish cultivated in Basarang Village, Kapuas Regency, Central Kalimantan. The method used in this study are : (1) marketing channels with the snowball sampling method (2) Farmer’s share (3) marketing margin and (4) The analysis of structure, conduct and performance using the analysis of (a) market integration and (b) price transmission elasticity. The analysis shows that (1) striped catfish marketing channels consist of 2 marketing systems, (2) Farmer’s share in the first channel is 70.90% and in the second channel is 86.57%, (3) Total of the marketing margin on the pattern 1 is 41.03% and the pattern 2 is 15.51% and (4) the analysis of structure, conduct and performance shows that (a) the results of market integration analysis obtained a regression coefficient (b) of 0.083 which indicates that the market structure is oligopsony and (b) the results of the analysis of price transmission elasticity (h) on channel 1 amounted to pattern 1 of 0.059 and pattern 2 to amount to 0.072 which means that price changes in elastic. Keywords: Striped Catfish, Marketing Channels, Margin, Farmer’s Share, Market Integration and Price Transmission Elasticity DOI: 10.7176/JMCR/65-03 Publication date: February 29th 202

High-Performance, Easy-to-Fabricate, Nanocomposite Heater for Life Sciences and Biomedical Applications.

Microheaters are used in several applications, including medical diagnostics, synthesis, environmental monitoring, and actuation. Conventional microheaters rely on thin-film electrodes microfabricated in a clean-room environment. However, low-cost alternatives based on conductive paste electrodes fabricated using printing techniques have started to emerge over the years. Here, we report a surprising effect that leads to significant electrode performance improvement as confirmed by the thorough characterization of bulk, processed, and conditioned samples. Mixing silver ink and PVA results in the solubilization of performance-hindering organic compounds. These compounds evaporate during heating cycles. The new electrodes, which reach a temperature of 80 °C within 5 min using a current of 7.0 A, display an overall 42% and 35% improvement in the mechanical (hardness) and electrical (resistivity) properties compared to pristine silver ink electrodes. To validate our results, we use the composite heater to amplify and detect parasite DNA from Trypanosoma brucei, associated with African sleeping sickness. Our LAMP test compares well with commercially available systems, confirming the excellent performance of our nanocomposite heaters. Since their fabrication relies on well-established techniques, we anticipate they will find use in a range of applications