Aluminum toxicity is one of the major factors inhibiting plant growth in acid soils. Brachiaria grass adapt to high Al concentration. This experiment was conducted to study exudation of low molecular weight organic acids (LMWOA) activated by Al, from Brachiaria roots and its potential in chelating Al. Three Brachiaria species, i.e. B. decumbens, B. ruziziensis and B. brizantha, planted in sterile sand culture and were treated with 5 Al concentrations (0, 100, 200, 300 and 400 μM). After two-month experiment, three kinds of LMWOA, i.e, malic, citric, and oxalic acids, produced by the three Brachiaria-root exudates were measured in the sand culture. The production of malic acid was higher than that of citric and oxalic acid. Those organic acids were influenced by Al concentration; the higher Al concentration the higher organic acid content would be. The organic acids were also proved to form Al-organic compounds effectively of which B. decumbens and B. brizantha were more effective in chelating Al at relatively low Al (100 μM) and at relatively high Al concentration (300 μM and 400 μM), respectively.
Background:World Health Organization(WHO) in 2012 showed that 26.4% of people suffer from hypertension. One of the things that affects blood pressure is stress. Blood pressure can be lowered by reducing stress levels. Nonpharmacological efforts to reduce stress are relaxation techniques, including meditation and murotal hearing. The purpose of this study was to determine the effect of a combination of meditation and murotal hearing on stress levels and blood pressure of hypertension sufferers.Methods: This study used a quasi-experimental design in the form of pretest - posttest intervention with control group. A sample of 30 respondents was divided into 15 intervention groups and 15 control groups. The intervention group received meditation and murotal hearing and antihypertensive therapy for 3 consecutive days while the control group only received antihypertensive therapy. The analysis uses paired t-test to determine the effect of the intervention on the intervention group and the independent t-test to see differences between influences between groups.Results: Meditation and murotal hearing significantly reduced stress scores by p=0, also significant in decreasing systolic blood pressure with p=0.008 and not significant in decreasing diastolic blood pressure with p=0.206. In the different test between intervention and control groups showed that a significant difference was found in the reduction in stress levels with a value of p=0.002.Conclusions:The combination of meditation and murotal hearing significantly reduces stress and systolic blood pressure. As for diastolic blood pressure, this combination therapy can decrease but not statistically significant.
Tujuan dari penelitian adalah (1) Untuk mengetahuui pengaruh secara individual (parsial) empati, persuasi, dampak, dan komunikasi terhadap keputusan pembelian konsumen pada Toko Bangunan Radin Timur, Jebres Surakarta. (2) Untuk mengetahu faktor yang paling dominan pengaruhnya terhadap keputusan pemelian konsumen pada Toko Bangunan Radin Timur, Jebres Surakarta.(3) Untuk mengetahui interaksi pengaruh secara simultan EPIC terhadap keputusan pemelian konsumen pada Toko Bangunan Radin Timur, Jebres Surakarta. Peneltian ini dilakukan di Toko Bangunan Radin Timur, yang berralamat di Jalan. Ir. Sutami No.59B, Pucangsawit, Kecamatan Jebres kota Surakarta. Dengan menggunakan sapel sebanya 38 pelanggan aktif.
Hasil penelitian ditemukan bahwa secara parsial dan simultan empati, persuasi, dampak, dan komunikasi terhadap keputusan pembelian konsumen. Variabel Empati paling domain pengaruhnya terhadap keputusan pembelian. Sumbangan pengaruh dari variabel empati, persuasi, dampak, dan komunikasi, terhadap Keputusan Pembelian sebesar 89,20%, sedangkan sisanya yaitu 10.80% berasal dari pengaruh faktor-faktor lain di luar penelitian ini.
Kata kunci:
Model Epic, Keputusan Pembelian, Regresi Linier Berganda
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.