Mollie\u27s Dream Waltz

https://digitalcommons.library.umaine.edu/mmb-ps/2770/thumbnail.jp

Weber\u27s Last Waltz

https://digitalcommons.library.umaine.edu/mmb-ps/3304/thumbnail.jp

Side Effects of Nitrification Inhibitors on Non Target Microbial Processes in Soils

Agricultural chemicals have been used extensively in modern agriculture and toxicological studies suggest a great potential for inducing undesirable effects on non target organisms. A model experiment was conducted in order to determine side effects of three nitrification inhibitors (NIs, 3,4dimethylpyrazolephosphate = DMPP, 4-Chlormethylpyrazole phosphate = ClMPP and dicyandiamide = DCD) on non target microbial processes in soils. Side effects and dose response curve of three NIs were quantified under laboratory conditions using silty clay, loam anda sandy soils. Dehydrogenase, dimethylsulfoxide reductase as well as nitrogenase activity (NA) and potential denitrification capacity were measured as common and specific non target microbial processes. The influence of 5-1000 times the base concentration, dose response curves were examined, and no observable effect level = NOEL, as well as effective dose ED10 and ED50 (10% and 50% inhibition) were calculated. The NOEL for microbial non target processes were about 30–70 times higher than base concentration in all investigated soils. The potential denitrification capacity revealed to be the most sensitive parameter. ClMPP exhibited the strongest influence on the non target microbial processes in the three soils. The NOEL, ED10 and ED50 values were higher in clay than in loamy or sandy soil. The NIs was the most effective in sandy soils.Keywords: microbial non target processes, nitrification inhibitors, soil enzyme

Analisia Pengaruh Campuran Bahan Bakar Solar-minyak Jarak Pagar Pada Kinerja Motor Diesel Dan Emisi Gas Buang

A test of a diesel motor using the fuel mixture of diesel-jatropha oil has been conducted in order to analyze the influence of fuel mixture composition to the motor performance and exhaust gas emission. The motor which had a single cylinder, 4 cycles, with maximum energy output of 4.4 kW at 2600 rpm, moved agenerator as electricity power load. The percentage of jatropha oil in fuel mixture was 0%, 10%, 30%, 50% and 100%. The testing method was, to each fuel mixture composition and at constant 2000 rpm motor rotation with electricity power load of 0 and 2 kW, the data concerning to the fuel consumption, lubricating oiltemperature and exhaust gas emission was measured. The test result indicated that the higher the percentage of jatropha oil in fuel mixture, the higher the fuel consumption and the CO2 and NOx emission in exhaust gas, but the lower the HC and O2 emission and opacity of exhaust gas

Laboratory measurements of small silicon bearing molecules of astrophysical interest

We will discuss the status of millimeter-wave laboratory measurements of the rotational spectra in the ground and vibrationally excited levels of small molecules containing two or three silicon atoms that might be the building blocks of dust seeds in carbon- and oxygen-rich AGB stars. The motivation is to provide essential spectroscopic information needed to guide future interferometric observations of the inner envelope of these objects at high angular resolution and sensitivity. The focus will be on a half-dozen species for which there is either no prior high resolution spectroscopy, or only in the centimeter band at best. We will also update the status of the known silicon carbides SiCC and SiCSi

Vibrational Satellites of C2_2S, C3_3S, and C4_4S: Microwave Spectral Taxonomy as a Stepping Stone to the Millimeter-Wave Band

We present a microwave spectral taxonomy study of several hydrocarbon/CS$_2$ discharge mixtures in which more than 60 distinct chemical species, their more abundant isotopic species, and/or their vibrationally excited states were detected using chirped-pulse and cavity Fourier-transform microwave spectroscopies. Taken together, in excess of 85 unique variants were detected, including several new isotopic species and more than 25 new vibrationally excited states of C$_2$S, C$_3$S, and C$_4$S, which have been assigned on the basis of published vibration-rotation interaction constants for C$_3$S, or newly calculated ones for C$_2$S and C$_4$S. On the basis of these precise, low-frequency measurements, several vibrationally exited states of C$_2$S and C$_3$S were subsequently identified in archival millimeter-wave data in the 253--280 GHz frequency range, ultimately providing highly accurate catalogs for astronomical searches. As part of this work, formation pathways of the two smaller carbon-sulfur chains were investigated using $^{13}$C isotopic spectroscopy, as was their vibrational excitation. The present study illustrates the utility of microwave spectral taxonomy as a tool for complex mixture analysis, and as a powerful and convenient `stepping stone' to higher frequency measurements in the millimeter and submillimeter bands.Comment: Accepted in PCC

<<Der>> freie Handel und die Schutzzölle

Boberach: Die Deutsche Nationalversammlung muß Zunftzwang und Schutzzölle beseitigen, durch Freihandel die Industrie fördernbeleuchtet von C. G. KopischIn Fraktu

Tarto maa-keele Abits kost latse wõiwa täwweste lugemist opi : Manu om pantu 12 jutu lugemise-tükis

http://tartu.ester.ee/record=b1723762~S1*es