SiO2 /Ge:SiO2 /SiO2 sandwiched structure was fabricated for exploring efficient light emission. After annealed in N2 (O2,1%), this structure shows three photoluminescence ~PL! bands at 293, 395, and 780 nm. The intensity of the 395 nm band is largely enhanced in comparison with that from the monolayered Ge:SiO2 film. Spectral analyses suggest that the three PL bands originate from S1→S0 , T((T)...

Hydrogen in the Earth's deep interior has been thought to exist as a hydroxyl group in high-pressure minerals. We present Muon Spin Rotation experiments on SiO2 stishovite, which is an archetypal high-pressure mineral. Positive muon (which can be considered as a light isotope of proton) implanted in stishovite was found to capture electron to form muonium (corresponding to neutral hydrogen). Th...

Anemonia sulcata may be a source of marine natural products (MNPs) due to the antioxidant and antitumor activity its crude homogenates shown in vitro colon cancer cells. A bioguided chromatographic fractionation assay with without symbiont Symbiodinium was performed characterize their bioactive composition further determine biological potential for management colorectal (CRC). The 20% fractions...

Sponges are marine biota that makes up coral reefs live on the bottom of waters and have an important role in ecosystems. bioactive components not been widely used by community. This study aimed to analyze content secondary metabolites antibacterial activity sponge Stylotella sp. test against Gram-negative (-) Escherichia coli Gram-positive (+) Staphylococcus aureus was carried out using good d...

Tapinanthus globiferus is used ethnomedicinally for the treatment of bacterial infections, inflammation, stomach pain, ulcers among others. The aim study was to isolate bioactive compounds from leaf T. growing on Acacia nilotica. powdered plant material extracted with 90 % methanol using cold maceration and resulting crude extract partitioned into n-hexane, chloroform, ethylacetate n-butanol fr...

Abstract Endophytic fungi are a group of microorganisms colonizing the plant tissue without exposing hazardous effects to their host. Higher plants have endophytic microbes that produce bioactive compounds or secondary metabolites. The aim study was isolate and identify from leaves, stems bark Styrax sumatrana . Samples were collected Huta Gurgur Village, Dolok Sanggul District, Humbang Hasundu...

In this study, eggplant peel extract was used to obtain hydrogels. Two experimental variants were realized by varying the wall materials. Whey proteins isolate (WPI), citrus pectin (P), and sodium carboxymethylcellulose (CMCNa) as The microcapsules obtained gelation technique, followed freeze-drying in order powders. Both analyzed terms of phytochemical content, antioxidant activity, storage st...

Hydrocotyle umbellata L. (Family Araliaceae) populary known as Acaricoba, is indicated in folk medicine for treatment of several inflammatory disorders. The goal of the present study is to evaluate the anti-inflammatory activity of the defatted ethanolic extract (DEE) of the aerial parts using carrageenan-induced rat paw oedema method. The levels of the pro-inflammatory cytokine interl...

aquatics are a source of bioactive compounds that these compounds have different properties such as antimicrobial activity. in this study, antibacterial activity of methanol, chloroform and hexane extracts from body wall, gonad and intestine of sea cucumber holothuria leucospilota was evaluated against bacillus subtilis, pseudomonas aeruginosa and staphylococcus aureus. bioactive compounds of b...