• Journal of Korean Philosophical Society
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• v.117
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• pp.223-247
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• 2011

In der vorliegenden Arbeit geht es um das Primat des Seins und die Ereignisontologie, denen der Diskurshorizont zwischen der Ontologie der philosophischen Hermeneutik und der dichterischen $Repr{\ddot{a}}sentation$ der Seinsquelle in $H{\ddot{o}}lderlins$ spekulativem Gedicht, >Andenken<, das die spekulative Philsophie als eine Philosophie ${\ddot{u}}ber$ das Wissen um Ursein vor dem Denken darstellt, zugrunde liegt. $H{\ddot{o}}lderlins$ und Hermeneutische Ontologie nimmt erstens das Ursein, das die ontologische Voraussetzung des Denkens sei, als die nicht nur logische, sondern auch temporale Quelle auf Grund der Kritik an der reflexiven Struktur des modernen Denkens an. Zweitens suchen beide die $Gesinnungsm{\ddot{o}}glichkeit$ des Urseins, das niemals ein begreifbarer Gegenstand des Denkens war, deshalb immer schon ${\ddot{u}}ber$ das Denken ${\ddot{u}}bertrefflich$ ist, auf der ontologischen Seite aus der selbstnegierenden Bewegung des Seins, auf der erkenntnistheoretischen Seite aus dem sprachlichen Ausdruck des Seins: Insofern das reflexive Denken die analytische Unterscheidung zwn Prinzip hat, ist das Ursein deshalb der logische Ursprung des analytischen Denkens, weil das Unterschiedene aus dem Einen geteilt wird. Und das Ursein ist deshalb auch die geschichtsphilosophische Arsche, weil das Viele die geschichtliche Selbstentwicklung des Einen ist. Aus dessen Grund $l{\ddot{a}}sst$ das Sein, das allem vorausgeht, mit seiner geschichtlichen Selbsterscheinung als negativer $Selbstverkl{\ddot{a}}rung$ und darnit zugleich mit dem sprachlichen Ausdruck als der epischen Symbolisierung solcher Ereignissen sich selbst als etwas sein. Das Wort des Verstandes, das nur die Negationsbewegung der Analyse ist, kategorisch einbegrenzt ist, kann daher nicht das Verweilen bei dem Geschehen der $urspr{\ddot{u}}nglichen$ Seinsquelle sein. Das dichterische Wort, das der Stimme aus der Seinsquelle $zugeh{\ddot{o}}rig$ ist, ${\ddot{u}}bersetzt$ die Selbstbewegung des Urseins auf den hermeneutischen Sinnhorizont, in dessen Spielraum das Ursein sich selbst aussagt. $Schlie{\ss}lich$ hoffe ich damit, in dieser Arbeit davon ${\ddot{u}}berzeugend$ vorderseite zu legen, dass $H{\ddot{o}}lderlins$ Gedicht, >Andenken< nicht nur die poetische Gesinnung auf die Seinsquelle, sondern auch die hermeneutische Ontologie der Seinsquelle ist.

• The Journal of Korean Society for Radiation Therapy
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• v.23 no.1
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• pp.41-49
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• 2011

Purpose: This study is designed to investigate radiotherapic valuation of Paraffin Wax, which is newly formed for this study and generally utilized in dentistry, and Mouth Piece and Putty impression, which are commonly used in radiotherapy, for oral cavity as a compensator. Materials and Methods: Each compensator was formed by $10{\times}10{\times}1cm$ and measured radiation dose attenuation ratio with reference of water phantom which is made of tissue-equivalent materials. Two patients with oral cancer underwent DRR (Digitally Reconstructed Radiogrph) of Offline Review Program of Aria System and Portal vision for 5 times for each material to evaluate reproducibility by each filling materials. Moreover, MU (monitor unit) changes by dose absorption were considered in the case of inevitable implication of an filling materials in the range for radiotherapy. Results: Radiation dose attenuation ratios were shown -0.7~+3.7% for Mouth Piece, +0.21~+0.39% for Paraffin Wax and -2.71~-1.76% for Putty impression. Error ranges of reproducibility of positions were measured ${\pm}3mm$ for Mouth Piece, ${\pm}2mm$ for Paraffin Wax and ${\pm}2mm$ mm for Putty impression. Difference of prescription MU from dose absorption with an filling material increased +7.8% (250 MU) in Putty impression and -0.9% (230 MU) in Paraffin Wax as converted into a percentage from the standard phantom, Water 232 MU. Conclusion: Dose reduction of boundary between cavity and tissue was observed for Mouth Piece. Mouth Piece also had low reproducibility of positions as it had no reflection of anatomy of oral cavity even though it was a proper material to separate Maxilla and Mandible during therapy. On the other hand, Putty impression was a suitable material to correctly re-position oral cavity as before. However, it risked normal tissues getting unnecessary over irradiation and it caused radiation dose decrease by -2.5% for 1cm volume in comparison of it of water phantom. Dose reduction in Paraffin Wax, Fat Tissue-Equivalent Material, was smaller than other impressions and position reproducibility of it was remarkable as it was possible to make an anatomy reflected impression. It was also well fitted to oral cavity to transfer radiation dose planned in radiotherapy. Thus, Paraffin Wax will be an ideal material in radiotherapy for patients with oral cancer.

• Journal of the korean academy of Pediatric Dentistry
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• v.36 no.1
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• pp.30-37
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• 2009

Early enamel caries is commonly remineralized by the patient‘s improved oral hygiene or fluoridation, however the result is clinically unreliable. As an alternative, we tried to seal the lesions with low-viscosity light-curing resin. The aim of the present study was to search the proper methods of the adequate pretreatment prior to applying adhesive resin on natural proximal caries lesions. Thirty nine extracted deciduous molar teeth showing proximal early caries lesion were used for this study. They were divided into 5 groups : Group 1; only carefully cleaned with water, group 2; etched with 15% HCl for 15s, group 3; etched with 35% phosphoric acid for 15s, group 4; etched with 35% phosphoric acid for 30s, and group 5; cleaned with 0.5% NaOCl. Following results were obtained by evaluating with SEM and CLSM after applied with adhesive resin. 1. As a result of SEM evaluation, group 2 showed clearly removed surface layer, group 3,4 showed partially removed surface layer irregularly, group 5 showed slightly removed surface layer. 2. Group 2 showed the deepest infiltration depth, followed by group 4, group 3, group 5, group 1 and besides group 5, other groups showed significantly deep infiltration depth. (p < 0.01) In conclusion, the best methods of the adequate pretreatment on natural proximal caries lesion for deep infiltration of adhesive resin was to etch with 15% HCl for 15s.

• Geophysics and Geophysical Exploration
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• v.9 no.1
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• pp.60-66
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• 2006

Three differing sandstones, two synthetic and one field sample, have been tested ultrasonically under a range of confining pressures and pore pressures representative of in-situ reservoir pressures. These sandstones include: a synthetic sandstone with calcite intergranular cement produced using the CSIRO Calcite In-situ Precipitation Process (CIPS); a synthetic sandstone with silica intergranular cement; and a core sample from the Otway Basin Waarre Formation, Boggy Creek 1 well, from the target lithology for a trial $CO_2$ pilot project. Initial testing was carried on the cores at "room-dried" conditions, with confining pressures up to 65 MPa in steps of 5 MPa. All cores were then flooded with $CO_2$, initially in the gas phase at 6 MPa, $22^{\circ}C$, then with liquid-phase $CO_2$ at a temperature of $22^{\circ}C$ and pressures from 7 MPa to 17 MPa in steps of 5 MPa. Confining pressures varied from 10 MPa to 65 MPa. Ultrasonic waveforms for both P- and S-waves were recorded at each effective pressure increment. Velocity versus effective pressure responses were calculated from the experimental data for both P- and S-waves. Attenuations $(1/Q_p)$ were calculated from the waveform data using spectral ratio methods. Theoretical calculations of velocity as a function of effective pressure for each sandstone were made using the $CO_2$ pressure-density and $CO_2$ bulk modulus-pressure phase diagrams and Gassmann effective medium theory. Flooding the cores with gaseous phase $CO_2$ produced negligible change in velocity-effective stress relationships compared to the dry state (air saturated). Flooding with liquid-phase $CO_2$ at various pore pressures lowered velocities by approximately 8% on average compared to the air-saturated state. Attenuations increased with liquid-phase $CO_2$ flooding compared to the air-saturated case. Experimental data agreed with the Gassmann calculations at high effective pressures. The "critical" effective pressure, at which agreement with theory occurred, varied with sandstone type. Discrepancies are thought to be due to differing micro-crack populations in the microstructure of each sandstone type. The agreement with theory at high effective pressures is significant and gives some confidence in predicting seismic behaviour under field conditions when $CO_2$ is injected.