Pengaruh Pelatihan dan Motivasi Kerja terhadap Kinerja Pegawai Sekretariat Direktorat Jenderal Pengelolaan Pembiayaan dan Risiko Kementerian Keuangan

This research aimed to determine whether there is influence between Training and Work Motivation to Employee Performance of Directorate General of Financing and Risk Management Ministry of Finance of Indonesia. This research uses the quantitative method. The number of samples in this research was 50 respondents. This research uses the purposive sampling method to determine the samples with the criteria of employees who had attended training in 2016 – 2017. Method of completion of data used in this research were a questionnaire, interviews, and research literature. The result of t-test shows a significant influence of training variable on employee performance with t-value 2.382, meanwhile work motivation variable does not significantly affect the employee performance with t-value 1.654. Training and Work motivation variables simultaneously have an effect of 21.3% on employee performance. Keywords: training, motivation, performanc

Pengaruh waktu tahan pack carburizing dan penggunaan media quenching cane molasses terhadap sifat mekanik dan struktur mikro baja karbon rendah

 Pack carburizing is one of the methods used to increase the carbon content in steel by using solid media. In this study, the addition of carbon elements was carried out using teak wood charcoal and cow bone powder, after that in quenching using cane molasses. Variations used for holding time are 2 hours, 4 hours, and 6 hours, variations in cane molasses content used 10%, 20%, 30%, and the percentage comparison between cow bone powder and teak wood charcoal is 50%:50%. The results of this study show that the pack carburizing resistance time factor is more influential on the mechanical properties and microstructure of low carbon steel. The highest hardness value is found at a holding time of 6 hours with quenching cane molasses 20% of 799.95 kg/cm2 and the lowest hardness value is found without treatment of 162.62 kg/cm2. For the highest impact toughness is found without treatment of 2.02 Joule/mm2 and the lowest impact toughness value is found at holding time of 6 hours with quenching cane molasses 20% of 1.127 Joule/mm2. For microstructures formed after treatment, martensite structures are formed due to rapid cooling

Potato breeding with haploids and 2<i>n</i> gametes

Potato breeding methods that utilize haploids of Solanum tuberosum group Tuberosum or group Andigena and 2n gametes exploit the genetic diversity, including both valuable traits and allelic diversity, available in exotic germ plasm. Three essential components are involved: (i) the wild and cultivated 2x relatives of the cultivated 4x potato are a valuable source of genetic diversity; (ii) haploids (2n = 2x = 24) of cultivars (2n = 4x = 48) are effective in capturing diversity (germ plasm enhancement); (iii) 2n gametes, resulting from first division restitution, are an efficient method of transmitting this genetic diversity to cultivated 4x potatoes. Heterosis for total and marketable tuber yield and specific gravity occurs in 4x families from crosses between 4x cultivars and 2x haploid Tuberosum × 'Phureja' hybrids. Selected 4x clones from relatively small 4x × 2x families have been released as cultivars based on their earliness and heat tolerance in the tropics. Other 4x clones from 4x × 2x crosses, where the 2x parents were haploid – wild species hybrids, have good yield, excellent tuber type, high specific gravity, low reducing sugars, storage quality, and stress tolerance. The seedling vigor, uniformity, and large tuber yields of progeny from 4x × 2x crosses also makes this an effective breeding method for producing potatoes from true potato seed. This breeding method is also being successfully exploited in alfalfa, red clover, sweet potatoes, yams and several species of grasses, fruits, and ornamentals.Key words: potato, haploids, 2n gametes, germ plasm, allelic diversity. </jats:p