The effect of heavy metals and light metals ions on anaerobic digestion of three agricultural biomasses (two row barley, wheat bran and a mixture of 75 % corn kernels and 25 % corncobs) was investigated in this study. The raw materials were characterized from physico-chemical point of view and their heavy metals content (copper, chromium, nickel, lead and zinc) and light metals ions content (po...

The rate of ammonia synthesis over a nanoparticle ruthenium catalyst can be calculated directly on the basis of a quantum chemical treatment of the problem using density functional theory. We compared the results to measured rates over a ruthenium catalyst supported on magnesium aluminum spinel. When the size distribution of ruthenium particles measured by transmission electron microscopy was u...

Analysis of Kemps and Land O’Lakes brand 2% milk was performed to detect aluminum, magnesium and calcium levels. ICP-AES was utilized because of its quick run time and ability to detect all three elements simultaneously. Mg and Ca levels were found to be well below expected values and Al was in too small a concentration to detect using this method. A possibility for the low results was that the...

Figure 1: In this x-ray composite image made with the electron microprobe, red represents aluminum, green, magnesium, and blue, iron. A glassy impact-melt vein with several large vesicles cuts through the breccia on the right side. Bx=Breccia, OPB=Olivine Phyric Basalt, OGC=Olivine Gabbro Cumulate TESTING PETROGENETIC RELATIONSHIPS OF THE LUNAR NWA773 METEORITE CLAN WITH NICKEL & COBALT IN OLIV...

Acid soils limit crop production on 30-40% of the world’s arable land and up to 70% of the world’s potentially arable land (Haug, 1983). Although the poor fertility of acid soils is due to a combination of mineral toxicities (aluminum and manganese) and deficiencies (phosphorus, calcium, magnesium, and molybdenum), Al toxicity is the single most important factor, being a major constraint for cr...

Quantitative in-situ and localized analytical methods that can monitor Mg release are central to probe the impact of the microstructure on magnesium alloy corrosion. As such, a potentiometric micro-Mg ion-selective membrane electrode is fabricated, calibrated, characterized and used to selectively monitor the Mg release from different cast Mg AM50 alloys during corrosion. We demonstrate that th...

The formation of interfaces between magnesium ~Mg! and the organic molecular semiconductor tris~8-hydroxy-quinoline! aluminum (Alq3) is studied via ultraviolet photoemission spectroscopy. The morphology and electronic structure of Mg-on-Alq3 and Alq3-on-Mg interfaces are compared. The energy of the Alq3 molecular levels is determined in both cases with respect to a reference Fermi level as a fu...

1. Easy to plate: steel, copper and brass. These can be coat* with adherent deposits that will riot fail at the deposit-substrate interface. 2. Special treatment: stainless steels, aluminum, beryllium, magnesium and plastics. These can also be coated with adherent deposits that will not fail at the deposit-substrate interface. 3. Very difsicult: titanium, molybdenum, tungsten, niobium, tantalum...

Paper is by far the dominant component in speaker cones. It is hard to beat cellulose paper for its mix of strength, lightness, stiffness, damping, and sound quality. Yet its strength drops off when it gets wet. The characteristics of paper cones shift due to humidity and tearing results from stress and punctures. I think almost everything has been used for speaker diaphragms, including acetic ...

1.1 This method is applicable to the in situ and intrusive analysis of the 26 analytes listed in Table 1 for soil and sediment samples. Some common elements are not listed in Table 1 because they are considered "light" elements that cannot be detected by field portable x-ray fluorescence (FPXRF). They are: lithium, beryllium, sodium, magnesium, aluminum, silicon, and phosphorus. Most of the ana...