Judul: Pengaruh Budaya dan Persepsi Nilai Anak terhadap Perilaku Investasi Anak Kasus: Keluarga Perkebunan di Jambi
Abstrak: Penelitian ini bertujuan untuk menganalisis pengaruh budaya dan persepsi nilai anak terhadap perilaku investasi anak. Pengambilan contoh dilakukan secara purposive dengan pertimbangan wilayah yang paling banyak jumlah balita serta petani karet. Contoh dalam penelitian ini adalah keluarga petani karet yang memiliki anak usia balita yang tinggal di Kecamatan Cermin nan Gedang, Sarolangun, Jambi. Kriteria contoh dalam penelitian ini yaitu keluarga dengan petani karet yang masih memiliki balita. Jumlah contoh dalam penelitian ini 60 keluarga petani getah karet. Pengambilan data dilakukan dengan cara mewawancarai ibu menggunakan kuesioner. Hasil penelitian menunjukkan bahwa perilaku investasi anak dipengaruhi secara positif signifikan oleh jumlah anak sekolah, , skor kolektivisme vs individualisme dan dipengaruhi secara negatif signifikan oleh skor nilai ekonomi. Variabel bebas yang diteliti 39.2 persen memengaruhi perilaku investasi anak sedangkan sisanya 60.8 persen dipengaruhi oleh variabel lain yang tidak diteliti seperti kondisi ekonomi keluarga (sejahtera atau tidak sejahtera), alokasi waktu dan alokasi uang.
Keyword: Nilai Budaya, Perilaku Inevstasi Anak, Perilaku Investasi Anak Dimensi Uang dan Waktu, Persepsi Nilai Anak

Judul: Pengaruh Budaya terhadap Nilai Anak dan Perilaku Investasi Anak pada Keluarga Petani.
Abstrak: Penelitian ini bertujuan untuk mendeskripsikan budaya, nilai anak dan perilaku investasi anak pada keluarga petani di Kecamatan Rambang Kabupaten Muara Enim, serta untuk menganlisis pengaruh dari karakteristik keluarga, karakteristik anak dan nilai budaya terhadap nilai anak dan perilaku investasi uang dan waktu untuk anak. Penelitian ini melibatkan 60 keluarga petani yang memiliki anak usia 3-5 tahun. Penarikan contoh diambil secara acak dan pengambilan data dilakukan dengan wawancara menggunakan kuesioner terstruktur. Hasil penelitian menunjukkan bahwa keluarga petani memiliki nilai budaya dengan power distance rendah, bersifat kolektivisme, cenderung feminin dan tergolong strong uncertainty avoidance. Uji regresi menunjukkan bahwa persepsi nilai anak dipengaruhi oleh nilai budaya power distance dan nilai kolektivisme. Selanjutnya, perilaku investasi anak dipengaruhi oleh nilai budaya power distance dan uncertainty avoidance. Nilai kolekitvisme dan status pekerjaan ibu berpengaruh terhadap perilaku investasi waktu untuk anak, sedangkan status pekerjaan ayah sebagai petani pemilik berpengaruh terhadap perilaku investasi uang untuk anak.
Keyword: keluarga petani, nilai anak, nilai budaya, perilaku investasi anak

Judul: Extracellular Expression of thermostable Geobacillus stearothermophilus T1.2RQ Lipase for Biodiesel Production
Abstrak: The extracellular expression of enzymes in an excellent secretion host such as Bacillus subtilis is a useful strategy for making enzymes of industrial significance more affordable by lowering the cost of its downstream processing. Lipases are a category of hydrolases that catalyze the hydrolysis of triglycerides to glycerol and free fatty acids. Also, lipases catalyze the hydrolysis and transesterification of other esters as well as the synthesis of esters. They can perform very specific biotransformation reactions and are widely used in food, organic synthesis, detergents, cosmetic, and pharmaceutical industries. Geobacillus stearothermophilus T1.2RQ lipase is an industrially-desired thermostable lipolytic enzyme with an excellent hydrolytic and transesterification activity. This study aimed to express T1.2RQ lipase, in B. subtilis WB800 and ensure its secretion into the extracellular medium. Three signal peptides (AmyQ, Epr, LipA) and two promoters (Pgrac01 and Pgrac100) were used in the secretory-expression of T1.2RQ lipase, based on five constructed expression vectors constructed by restriction cloning and PCR mutagenesis. Sangers sequencing was used to verify constructs to ensure they are in the correct reading frame. Recombinants vectors, pHT43 (plasmid control), pHT43-T1.2RQ, pHT43- T1.2RQ_AmyQ, pHT43-T1.2RQ_Epr, and pHT43-T1.2RQ_LipA, were transformed by electroporation into Bacillus subtilis WB800. The electroporation was successful with the optimum condition of 2500V, 200 ohms, 25µF, and 5milliseconds. Recombinant B. subtilis pHT43 (negative control) and pHT43-T1.2RQlip + signal peptides were streaked on the lipidic agar, LA+TBN. All four recombinants, including the negative control (B. subtilis WB800-pHT43), produced clear zones on the TBN agar plate after overnight incubation (fig 2), indicating the presence of a lipolytic enzyme in all of the recombinant B. subtilis cells. pHT43-T1.2RQlip + signal peptides (AmyQ, Epr, and LipA) have clear zones with significantly higher diameters than B. subtilis WB800-pHT43 (negative control). This phenomenon suggests that the recombinant thermostable lipase T1.2RQ introduced into these cells was successfully expressed, thereby increasing the lipolytic capability of its host cells T1.2RQ lipase was expressed in 50ml terrific broth medium (TB) and the expression induced with 1mM IPTG. Lipase activity assay using p-nitrophenyl esters showed that all three signal peptides directed the secretion of T1.2RQ lipase into the extracellular medium. Signal peptide, LipA, resulted in the highest extracellular activity of 5.6 U/mL, which corresponds to a 6-fold increase over the parent B. subtilis WB800 strain. Meanwhile, signal peptides, AmyQ and Epr produced 4.2 U/mL and 3.4 U/mL activity respectively. SDS-Zymogram analysis confirmed that T1.2RQ lipase was correctly processed and secreted in its original size of 44 kDa. An attempt to further increase lipase expression level by promoter optimization showed that, contrary to expectation, promoter Pgrac100 exhibited similar expression levels as the original Pgrac01. Nevertheless, the demonstration of the successful secretion of T1.2RQ lipase in this work confirms the latter as a promising approach for the industrial production of the enzyme
Keyword: Bacillus subtilis, Expression, Extracellular, Heterologous, Lipase, Thermostable