http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Stable automorphic forms for the general linear group
양재현 대한수학회 2024 대한수학회지 Vol.61 No.1
In this paper, we introduce the notion of the stability of automorphic forms for the general linear group and relate the stability of automorphic forms to the moduli space of real tori and the Jacobian real locus.
철-니켈-크롬 三成分系에서 X-線 螢光의 매트릭스 效果에 관한 硏究
양재현,예진해,Yang Che-Hyon,Yeh Jin-Hae 대한화학회 1993 대한화학회지 Vol.37 No.10
In general, the concentration of constituents can be more accurately measured in x-ray fluorescence analysis of Fe-Ni-Cr alloy by reducing and correcting the matrix effect with standard ingot samples. Because of the difficult the treatment at a high temperature in preparing the ingot samples of various concentrations, several standard specimens were prepared by mixing the powders of the metallic oxides in certain proportions and pressing them with a costant pressure. With the metallic oxide specimens thus obtained, different matrix coefficients were calculate from the intensities of the strength of the x-ray fluorescence and the concentration of the substances. It is found that effects of Fe and Cr on Ni are absorption rich and effects of Fe and Ni on Cr are enhancement rich, whereas Ni enhances Fe Fluorescence but Cr absorves Fe K${\alpha}$ line. And the x-ray fluorescence intensities were compared and analyzed between the metallic oxides and the ingot samples. X-선 형광분광 분석에서 매트릭스 효과를 줄이거나 보정을 해야만 보다 정확한 분석원소의 함량을 구할 수 있다. 매트릭스 계수를 구하기 위하여 표준물질을 이용해야 하는데, 괴상시편(ingot)을 임의의 성분함량별로 제작하려면 고온의 열처리로 어려움이 많으므로 금속산화물의 미세한 분말을 각 성분 함량비로 혼합해서 일정 압력을 가해서 시편을 만들었다. 이 시편의 X-선 형광세기와 농도로서 매트릭스 계수를 구해서 미지물질의 성분함량을 구하였다. 그 결과 Ni에 대해서 Fe와 Cr은 흡수 효과가 우세하고 Cr에 대해서 Fe와 Ni는 증강 효과가 우세하였으며 Fe에 대해서 Ni는 증강 효과가 강하고, Cr은 흡수 효과가 강했다. 그리고 또 이 금속산화물과 괴상시편에서 얻은 X-선 형광세기를 비교 검토하였다.
파모인산베르베린의 생체내(生體內) 이용률(利用率)에 관한 연구(硏究) (I)
양재현,Yang, Jae-Heon 한국약제학회 1986 Journal of Pharmaceutical Investigation Vol.16 No.2
Berberine is one of alkaloids extracted from Phellodendri Cortex or Coptidis Rhizoma and has extensively used as an antibacterial and antidiarrheal drug. In order to increase the bioavailability of berberine preparation, berberine pamoate was synthesized and investigated on its usage in vitro and in vivo. Berberine was more rapidly extracted from herbal plants by hot water extraction method than soxhlet extraction method. Berberine pamoate was easily synthesized from berberine hydrochloride and potassium pamoate solution and identified using the infrared spectrum. Quantitative analysis of berberine was possible in methanol solution by fluorometric determination. The dissolution rate of berberine pamoate was more decreased than that of berberine hydrochloride in simulated gastric fluid and simulated intestinal fluid. The remaining proportion of berberine pamoate in the small intestine of rat was maintained at high concentration for a long time as compared with that of berberine hydrochloride.
On the group $SL(2,{\Bbb R})\ltimes {\Bbb R}^{(m,2)}$
양재현 대한수학회 2003 대한수학회지 Vol.40 No.5
In this paper, we find the unitary dual of the groupSL(2,{Bbb R})ltimes {Bbb R}^{(m,2)} and study automorphicforms related to the group SL(2,{Bbb R})ltimes {BbbR}^{(m,2)}.
양재현,차기원,Yang Jae Hyun,Cha Kee Won 대한화학회 1967 대한화학회지 Vol.11 No.1
A method of determination of gold in ores has been established: Disolved ore solution is evaporated to dryness, redissolved with 0.1N HCl then chloroaurate formed is adsorbed on anion exchange resin, Dowex $1\;{\cdot}\;{\times}4$. The resin is ignited and the residue is dissolved with HCl-$HNO_3$. After evaporation of the acid, and then dilution with water, sodium azide is added. The gold is extracted with amyl alcohol from the solution buffered to pH 6. The gold is determined by measuring absorbancy of the alcohol layer spectrophotometricaly at $385m{\mu}$. Various factors, HCl concentration, amount of the resin rate, if adsorption, foreign ions, effecting to the method, have been examined. This method seems to be satisfactory for the determination of gold presented dawn to 1g per metric ton in ore.
Sectional curvatures of the Siegel-Jacobi space
양재현,Young-Hoon Yong,허수나,신정희,민길홍 대한수학회 2013 대한수학회보 Vol.50 No.3
In this paper, we compute the sectional curvatures and the scalar curvature of the Siegel-Jacobi space H1 × C of degree 1 and index 1 explicitly.
COVARIANT MAPS FOR THE SCHR¨ODINGER-WEIL REPRESENTATION
양재현 대한수학회 2015 대한수학회보 Vol.52 No.2
In this paper, we construct the Schr¨odinger-Weil representation of the Jacobi group associated with a positive definite symmetric real matrix of degree m and find covariant maps for the Schr¨odinger-Weil representation.
TSN 206 SA형 질량분석기의 고유특성에 관한 연구
梁在炫,嚴泰允 단국대학교 1984 論文集 Vol.18 No.-
Some characteristics of Model TSN 206 SA Mass Spectrometer, especially, on the variation of ion population as a function of time at the ion source, response time of the magnetic field and stability of the field after step scanning at peaks have been investigated and the following results are obtained. 1) Magnetic field response is fast enough for a general experimental purpose so that waiting time longer than 50μsec. after step scanning at peaks gives sufficient accuracy. 2) Integration time is more important than waiting time and the former should be longer than 1sec. in order to have ordinary analytical accuracy. 3) Built-in clock system is designed such that it's increment is 0.2sec. For short integrating time experiment, it is very important that the integration should be set at duration of integar multiple of 0.2sec. 4) In order to obtain more accurate isotope ratio, data processing program must be modified considering the pattern of tatal ion population variation during a measurement in the ion source of the system.