The research aimed to investigate how far increasing frequency of tractor traffic tillage on slopy ground could deteriorate land stability and soil productivity has been carried out by observing and analyzing the changes of soil physical-mechanical…
This research aims to find out the potency of the integration strategy of PBL with cooperative learning of Jigsaw in mmproving the students understanding of concept. This research belongs to quasi-experimental with pretest-posttest nonequivalent…
Tujuan utama dari penelitian generalisasi validitas adalah untuk mengestimasi mean dan variansi validitas sesungguhnya dari suatu tes seleksi. Prinsip dasar dari model generalisasi validitas adalah pemartisian variansi, yaitu identifikasi dan…
Kualitas air tidak hanya ditentukan dari sifat fisiknya saja, tetapi juga kandungan mikroorganisme penyebab penyakit (patogen) dan zat kimia yang merusak kesehatan. Mikroorganisme sebagai indikator kualitas air adalah coli fecal dan coli non-fecal.…
Bacterial leaf blight (BLB) disease caused by plant pathogenic bacteria Xanthomonas oryzae pv. oryzae (Xoo) could lead to death of rice plants. Control of plant pathogenic bacteria can be performed using biological control agents. The aim of this…
Biological parameters of insect pests is very important in testing the resistance of rice plants against brown plant hopper. This research aims to study the amount and duration of stage egg, nymph, imago, and the life cycle of brown plant hopper on…
Learning the science of biology still tends to prioritize the acquisition of results (products) in the form of knowledge, memory, and ability to think logically so that most students still think that the science of biology is a lesson to memorize. As…
Telah dilakukan penelitian tentang kajian potensi produk pirolisis limbah padat kelapa sawit. Penelitian ini bertujuan untuk mengetahui potensi produk pirolisis dari cangkang kelapa sawit. Cangkang kelapa sawit mula-mula dipirolisis menggunakan…
Searching for novel bioactive compounds of microorganisms is increasing. Actinomycetes are a group of bacteria that have potential as a major producer of bioactive compounds. This study aimed to isolate and evaluate the isolates of actinomycetes…
Chitosan as a material of biological origin has recently been used for recovery of metal ions. This research aims to synthesize kitosan resin resulted by the reaction of kitosan with etilendamin. In the present work chitosan was cross-linked with…