• Corrosion Science and Technology
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• 제13권3호
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• pp.107-111
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• 2014

Electroless plated Ni-Co-P films have been used to suppress the electromagnetic waves from magnetic recording media, and the suppression is known to be achieved with films made with optimized plating composition and plating condition. Effects of complexing agents on the deposition rate and bath stability of Ni-Co-P film were studied using sodium citrate, sodium tartrate and multi-complex agents containing both of them. Deposition of electroless Ni-Co-P platings was dependent upon the complexing agents. Deposition rate was twice when using sodium tartrate compared to that using sodium citrate. And it was slightly slower with multi-complex agents than with sodium tartrate, bath stability being declined in the former. Deposition rate increased with increasing pH until pH 11. Excellent bath stability and good deposition rate were obtained using multi-complex agent as sodium citrate 0.10 mol/L and sodium tartrate 0.15 mol/L in the electroless Ni-Co-P plating films.

• 한국세라믹학회지
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• 제25권3호
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• pp.300-306
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• 1988

The catalytic effect of salts on formation of ${\alpha}$-calcium sulfate hemihydrate under water vapor at atmospheric pressure was studied and the formation of q-calcium sulfate hemilydrate from by-product gypsum of phosphoric acid process was investigated. The order of catalytic effect of salts are as follow: Ammonium chloride>Sodium succinate>Calcium chloride>Sodium tartrate>Magnesium chloride The prismatic crystals was formed when ammonium chloride, calcium chloride and magnesium chloride was added, whereas the needle crystals was formed when sodium tartrate was added. Ammonium chlorideis most successful in catalytic effects in formation of ${\alpha}$-calcium sulfate hermihydrate for the by-product gypsum of phosphoric acid process.

• Journal of Pharmaceutical Investigation
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• 제33권3호
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• pp.157-162
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• 2003

The feasibility of [P(AA-co-PEGMM)] film as a buccal mucoadhesive patch was previously reported by estimating mucoadhesiveness and release characteristics. To find a rational penetration enhancer of [P(AA-co-PEGMM)] film containing butorphanol tartrate (Bt), penetration of Bt from [P(AA-co-PEGMM)] film which contained various additives was estimated by measuring its flux, Papp and lag tme in in vitro buccal membrane of porcine. EDTA showed almost no increase of Bt permeability, wherease SGC, STDHF and SLS increased the permeability of Bt with the order of SGC > STDHF > SLS. The rational additive concentration of SGC was 4% and its Papp and lag time were $1.93{\times}10^{-4}{\pm}4.21{\times}10^{-6},\;126.60{\pm}21.88min\;(control\;:\;Papp\;0.45{\times}10^{-4};\;lag\;time\;211.01{\pm}16.77\;min)$, respectively.

• 미생물학회지
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• 제32권3호
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• pp.182-185
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• 1994

구름버섯에 의한 Poly R-478염료의 탈색에 미치는 탄소원과 질소원의 영향을 조사하였다. 2.0% glucose, 0.04% ammonium tartrate, 2% $KH_2PO_4$, 0.5% $MgSO_4{\cdot}7H_2O$, 0.1% $CaCl_2{\cdot}2H_2O$, 0.002% thiamine-HCI, 10 mM 2,2-dimethylsuccinate(sodium)와 0.02% Poly R-478 염료 등으로 조성된 질소제한배지에서 균주를 $28^{\circ}C$에서 10일간 정치배양 했을때 염료의 탈색율은 87.2%로 나타났다. 염료의 탈색은 배지내에 질소원이 존재할 때에 일어났으며 탈색율은 배지내에 질소원이 고갈된 직후에 급격히 증가하였다.

• 한국세라믹학회지
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• 제24권4호
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• pp.343-348
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• 1987

The effects of salts such as aluminum sulfate as inorganic salt(2-4%), and sodium salts of citrate, tartrate, succinate, potassium tartrate and gelatin as organic salts(0.1%) on the formation of ${\alpha}$-calcium sulfate hemihydrate from by-product gypsum of phosphoric acid process under hydrothermal condition at 123$^{\circ}C$ and 133$^{\circ}C$ were investigated. Aluminum sulfate solution exhibited the catalystic effected on the crystallization of ${\alpha}$-calcium sulfate hemihydrate of which was assumed in the prismatic form, and organic salts solution exhibited little effect on the catalystic action to the crystallization, than inorganic salts. In the acidic solution with sulfuric acid(pH=2), needle like crystal of calcium sulfate hemihydrate was obtained. Hydrothermal process with aluminum sulfate solution also showed certain amounts of impurity removal such as phosphorus penataoxide from calcium sulfate hemihydrate.

• 사물인터넷융복합논문지
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• 제9권3호
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• pp.27-33
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• 2023

본 연구에서는 Diospyros kaki Thunb(감)의 염색 패턴으로 분석하여 매염제에 따라 견직물과 세포의 염색 패턴이 어떻게 변화하는지 수치적으로 평가하고자 하였다. 염색된 견직물이 충분히 건조되었을 때 견직물은 엷은 황색을 띠는 것으로 나타났다. 흥미롭게도 철 II 황산염 매염제는 색 변화를 가장 많이 변화시켰고, 견직물은 갈색 또는 암자색에 가까운 색으로 염색되었다. 수치해석을 위해 타르타르산 나트륨과 구연산 및 아세트산 구리에의해 각각 19%와 62.5%의 색상 변화가 유도될 수 있었다. 철 II 황산염은 무처리 매염제보다 88%로 가장 큰 차이를 보였다. 중국 햄스터 난소(CHO) 세포의 약 5% 및 10%는 각각 타르타르산나트륨과 시트르산 및 아세트산구리로 염색되었다. 철 II 황산염에 의해 유도된 염색 효과는 타르타르산 나트륨 + 시트르산에 의한 염색 효과보다 약 2.4배 더 높았다. 기존의 연구들에서는 염색 결과를 육안적으로 확인하여왔다. 하지만, 본 논문의 결과들은 염색을 육안적으로 확인할 뿐만아니라 색상변화를 수치화한 것이다. 특히, 빅데이터에 수치화된 결과들이 계속 집약 된다면 방법에서, 시간, 부피 등을 변화시키더라도 유사한 결과들을 어느 연구자들이 쉽게 얻을 수 있을 것이다. 또한, 본 연구의 수치 데이터는 IoT 구축 및 컴퓨터 분석을 위한 데이터베이스 구축에 중요한 근거가 될 수 있을 것으로 사료된다.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 The Korea-Japan Joint Symposium
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• pp.17-18
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• 2003

Swelling behaviors of Lyocell and Polynosic fibers are investigated by measuring fiber sizes in ferric sodium tartrate complex (FeTNa) and NaOH solution. They showed an anisotropic swelling behavior, i.e., a large expansion in a radius and small shrinking in a longitudinal direction. Birefringent structure was maintained in Lyocell fibers in the swollen state but not in Polynosic fibers for both solvent systems.

• 대한화학회지
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• 제17권5호
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• pp.346-352
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• 1973

양이온교환수지관($Dowex 50w{\times}12$, $35cm{\times}3.14cm^2$)을 사용하여 0.1M의 V(V), Cu(II), Ni(II), Co(II), Cr(III), Mn(III), Fe(II), 용액을 각기 1ml씩 섞은 혼합 용액 7ml를 다음과 같은 용리액으로 용리시켜 정량적으로 분리하였다. 즉 Fe(II), V(V), Cu(II), Ni(II), Co(II)에 대하여는 0.6M 염화나트륨과 0.1M 타르타르산나트륨의 혼합용액 (pH 2.00과 4.50)을 Mn(II)과 Cr(III)에 대하여는 3M 염화나트륨과 0.1M 타르타르산나트륨의 혼합용액 (pH 4.50과 5.00)을 용리액으로 사용하여 단계적으로 용리하였다. 많은 양($97\%$ 정도)의 Fe(II)과 V(V), Cu(II), Ni(II), Mn(II), Cr(III)을 섞은 시료용액은 먼저 음이온교환수지관($Dowex 1{\times}8$, $15cm{\times}3.14cm^2$)을 사용하여 4.0M 염산으로 용리하여 대부분의 철을 분리한다. 이때 V(V), Ni(II), Mn(II), Cr(II)은 같은 위치에서 용출되므로 함께 받고 다음에 Cu(II)는 소량의 철과 함께 용출된다. 이것을 다시 양이온수지관($Dowex 50w{\times}12$, $10cm{\times}3.14cm^2$)을 사용하여 여러 가지 이온들을 분리할 수 있었으며 철강중에 들어있는 양이온 성분들도 같은 방법으로 분리할 수 있었다.

• 한국세라믹학회지
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• 제25권5호
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• pp.449-454
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• 1988

The effects of salts which was used as a catalysis in formation of $\alpha$-calciumusulfate hemihydrate from dicalcium sulfate hydrate were investigated on the hydration of $\alpha$-calciumsulfate hemihydrate. The hydration of $\alpha$-calciumsulfate hemihydrate was studied by the measurements of crystalline water, heat evolution. Also the hydrates were analyzed by XRD, DSC and SEM. The promotive effect each salts on the hydration was as follows: NaCl>NH4Cl>NaNO3>NH4NO3, and the hydration rate was accelerated with concentration of salts. The effect of Al2(SO4)3 and potassium sodium tartrate on the hydration was slmilar to water, whereas sodium succinate and gelatin retarded the hydration in comparision with water. These salts affected the hydration time but total heat evoution was similar.

• Bulletin of the Korean Chemical Society
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• 제9권2호
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• pp.77-80
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• 1988

A suituable choice of supporting electrolyte medium for trace level determinations of chromium(VI) by differential pulse polarography is described. A comparative study suggests that sodium borate buffer is superior to ammonium acetate, ammonium tartrate, and especially to NaF which was recently known to be one of the most proper medium for the purpose. With 0.01 M borate, the best combination of high sensitivity, well-defined base line, and freedom from common interferents was attained. With $5.0{\times}10^{-7}$M Cr(VI), tenfold excesses of Cu(II) and Fe(III), and a five hundred-fold excess of $Cl^-$ do not change the peak current by more than about 1%. And the detection limit was $5.0{\times}10^{-8}$M Cr(VI).