理論手法、理論的手法

WordNet

a practical method or art applied to some particular task
concerned with theories rather than their practical applications; "theoretical physics"
concerned primarily with theories or hypotheses rather than practical considerations; "theoretical science" (同)theoretic

PrepTutorEJDIC

〈U〉(科学・芸術などの)『技巧』,技術 / 〈C〉(技術・技巧を示す)『手法』,表現方法;腕前

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

1. 胆石治療のためのレーザー砕石術 laser lithotripsy for the treatment of gallstones
2. 気管支内近接照射療法 endobronchial brachytherapy
3. 腹腔鏡下手術に用いる腹部アクセス法 abdominal access techniques used in laparoscopic surgery
4. 緊急輪状甲状間膜切開（輪状甲状軟骨切開術） emergent surgical cricothyrotomy cricothyroidotomy
5. 総胆管括約筋切開の標準手技：最前線 standard biliary sphincterotomy technique the cutting edge

English Journal

Foams and antifoams.

Karakashev SI, Grozdanova MV.AbstractFoams and antifoams are two entities with completely different natures. For example, the foams are structures of bubbles in contact, while the antifoams are emulsions containing hydrophobic particles. The interaction between them makes the foam decay faster and in the same time exhausts the antifoam. The mechanism of such an effect is complex of many phenomena taking place in the foam. Thus the antifoams are known as powerful foam suppressors. For these reasons, they are very important from fundamental and practical viewpoints. This paper summarizes the knowledge on antifoams since their very creation till nowadays. In this regard, the review discloses the scientific interpretations on antifoams in chronological order in accord with the literature. Thus, for example it begins with description of the first antifoams (oils) from the 1940s and the pioneering studies of S. Ross and his group. The first physical methods for studying antifoams were presented along with the concepts of spreading and entering coefficients of oils (W. Harkins, 1941, J. Robinson and W. Woods, 1948). The further development of the antifoams (oils+hydrophobic particles) was described by means of the works of R. Kulkarni et al., A. Dippenaar and P. Garrett in the late 1970s and the early 1980s. The theoretical models on the antifoam performance of R. Pelton and P. Garrett, developed in 1980s and 1990s, were presented and analyzed as well in regard with their limits of applicability. Substantial advance on the experimental techniques for studying antifoams has been achieved by introducing different variants of the film trapping technique (FTT) developed by D. Wasan et al., I. Ivanov et al. and T. Tamura et al. in the middle and the late 1990s. An assessment of these techniques was carried out in regard with their capacity for detailed studying the antifoam action within the thin liquid films. Finally, the latest knowledge on the antifoams was achieved due to N. Denkov and his group, who harnessed both the most successful type of FTT and the interferometric thin film setup of Scheludko to conduct innovative experiments on the antifoam's action in the foam films under different conditions. They derived new more detailed understanding on the antifoam's action. For this reason, we must acknowledge the series of works under the supervision of N. Denkov performed between 1996 and 2004 as the lately ones in the field. The present work contains in addition a subchapter devoted to describing alternative methods for design and control of the foam stability. As far as the foaminess and the rate of foam decay depends on the states of the surfactant adsorption layers situated on the bubble surfaces, both foaminess and foam durability can be designed by means of proper choices of surfactants, concentrations and methods of foam generation. Therefore, this paper scrutinized the very mechanism of foam generation whose product is initial foam. Afterwards it was pointed out that the elastic modulus of the foam bubbles is responsible for the further "life" of the already generated foam. A compilation between foaminess and average rate of foam decay named foam production was shown as more successful way to describe the foaming capacity of the frothers. In addition, the properties of tenacious famous under various conditions were exhibited as well. This subchapter does not give any formula for precise design of foams with entailed durability but rather outlines new ways to achieve such recipe.
Advances in colloid and interface science.Adv Colloid Interface Sci.2012 Aug;176-177:1-17. Epub 2012 Apr 13.
Foams and antifoams are two entities with completely different natures. For example, the foams are structures of bubbles in contact, while the antifoams are emulsions containing hydrophobic particles. The interaction between them makes the foam decay faster and in the same time exhausts the antifoam
PMID 22560722

Harmonic generation of an obliquely incident ultrasonic wave in solid-solid contact interfaces.

Nam T, Lee T, Kim C, Jhang KY, Kim N.SourceDepartment of Automotive Engineering, Hanyang Univ., Seoul 133-791, Republic of Korea.
Ultrasonics.Ultrasonics.2012 Aug;52(6):778-83. Epub 2012 Feb 23.
The conventional acoustic nonlinear technique to evaluate the contact acoustic nonlinearity (CAN) at solid-solid contact interfaces (e.g., closed cracks), which uses the through-transmission of normally incident bulk waves, is limited in that access to both the inner and outer surfaces of structures
PMID 22410490

Japanese Journal

フレクソ分極を考慮した液晶セルの静電容量特性シミュレーション

中村柊介,工藤幸寛,高橋泰樹
工学院大学研究報告 (118), 79-82, 2015-04-30
… We have proposed the measurement technique that the sum of flexo-coefficients (e11+e33) was determined by fittingmethod with the electric capacitance characteristics between the measurement curve and the theoretical calculatedcharacteristic in the HAN-LC cell. … Our report studied the influence of LC material parameters such as a pre-tilt angleand an elastic constant ratio K33/K11 on the value of e11+e33 by theoretical calculation. …
NAID 110009896027

Improvements in the synthesis of highly focused ultrasonic beams using the negative-time part of the 0-order X-wave driving signals

Castellanos Luis,Ramos Antonio,Calás Hector,Bazán Ivonne
Jpn. J. Appl. Phys. 54(5), 057003, 2015-04-15
… Some achievements obtained by using the proposed technique are a low energy and lower cost to drive the piezoelectric elements while maintaining a similar depth of field and beamwidth as those of the conventional method, a lower space extension of sidelobes, and easier control of the electrical driving system. … Theoretical and experimental results support these hypotheses, and confirm the improvements obtained. …
NAID 150000110607

Geometric pumping induced by shear flow in dilute liquid crystalline polymer solutions.

Yabunaka Shunsuka,Hayakawa Hisao
The Journal of chemical physics 142(5), 2015-02-04
… We analyze the Smoluchowski equation, which describes the dynamics of the orientation of a liquid crystalline polymer, by employing technique of the full counting statistics. … The validity of the theoretical calculations is confirmed by direct numerical simulations of the Smoluchowski equation. …
NAID 120005593681