Rapid decomposition of asbestos and with various additives

The toxicity of asbestos is widely known, and various methods are being investigated to decompose asbestos into harmless compounds. The authors previously reported that asbestos-cement composites, a general waste material including asbestos, can be decomposed into harmless substances by adding small amounts of CaCl2 and then heating to 700℃ [1-3]. Recycling decomposed asbestos as a raw ingredient for cement is crucial in using this result industrially. However, compounds including chlorine form in decomposed asbestos, preventing of use in production of cement. The authors investigated additives other than CaCl2 in decomposition, and found that reagent-grade asbestos can be decomposed by adding 5mass% of additive and heating for 15 seconds at a low temperature of 900℃

Rapid decomposition of asbestos and with various additives

The toxicity of asbestos is widely known, and various methods are being investigated to decompose asbestos into harmless compounds. The authors previously reported that asbestos-cement composites, a general waste material including asbestos, can be decomposed into harmless substances by adding small amounts of CaCl2 and then heating to 700℃ [1-3]. Recycling decomposed asbestos as a raw ingredient for cement is crucial in using this result industrially. However, compounds including chlorine form in decomposed asbestos, preventing of use in production of cement. The authors investigated additives other than CaCl2 in decomposition, and found that reagent-grade asbestos can be decomposed by adding 5mass% of additive and heating for 15 seconds at a low temperature of 900℃

18. asırda "Hırkai şerif" ziyareti

Taha Toros Arşivi, Dosya No: 120-Saraylar. Not: Gazetenin "Tarihten Sahifeler" köşesinde yayımlanmıştır.İstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Results of the search for inspiraling compact star binaries from TAMA300's observation in 2000-2004

We analyze the data of TAMA300 detector to search for gravitational waves from inspiraling compact star binaries with masses of the component stars in the range 1-3Msolar. In this analysis, 2705 hours of data, taken during the years 2000-2004, are used for the event search. We combine the results of different observation runs, and obtained a single upper limit on the rate of the coalescence of compact binaries in our Galaxy of 20 per year at a 90% confidence level. In this upper limit, the effect of various systematic errors such like the uncertainty of the background estimation and the calibration of the detector's sensitivity are included.Comment: 8 pages, 4 Postscript figures, uses revtex4.sty The author list was correcte

Observation results by the TAMA300 detector on gravitational wave bursts from stellar-core collapses

We present data-analysis schemes and results of observations with the TAMA300 gravitational-wave detector, targeting burst signals from stellar-core collapse events. In analyses for burst gravitational waves, the detection and fake-reduction schemes are different from well-investigated ones for a chirp-wave analysis, because precise waveform templates are not available. We used an excess-power filter for the extraction of gravitational-wave candidates, and developed two methods for the reduction of fake events caused by non-stationary noises of the detector. These analysis schemes were applied to real data from the TAMA300 interferometric gravitational wave detector. As a result, fake events were reduced by a factor of about 1000 in the best cases. The resultant event candidates were interpreted from an astronomical viewpoint. We set an upper limit of 2.2x10^3 events/sec on the burst gravitational-wave event rate in our Galaxy with a confidence level of 90%. This work sets a milestone and prospects on the search for burst gravitational waves, by establishing an analysis scheme for the observation data from an interferometric gravitational wave detector

ショウワキチ シュウヘン ニ セイソク スル セイブツ ノ セイタイ ナイ キンゾク ブンセキ ダイ2ホウ

南極昭和基地周辺に生息するアデリーペンギンおよびトウゾクカモメの臓器(肝臓および胸筋)中に含有する微量金属を, フレームまたはグラファイトファーネスアトマイザーを用いた原子吸光法によって定量した。分析結果の1例として, アデリーペンギンの胸筋に含有するカドミウム, 銅, 鉄, マンガン, 鉛および亜鉛の濃度は, それぞれ0.003～0.021,2.3～3.5,192～199,0.18～0.53,0.014～0.053および10～30μg-metal/g-乾燥重量当たりの範囲であった。Concentrations of trace metals in the pectoral of Adelie penguin and south polar skua living around Syowa Station, Antarctica were determined by atomic absorption spectrometry using flame or graphite furnace atomizer system. The results of analysis revealed that the concentration levels of cadmium, copper, iron, manganese, lead and zinc in the pectoral of Adelie penguin were ranging 0.003-0.021,2.3-3.5,192-199,0.18-0.53,0.014-0.053 and 10-30μg-metal/g-dry tissue, respectively