Sporotrichosis is a subcutaneous mycosis caused by the Sporothrix schenckii complex. It has three classic clinical variants: fixed, lymphangitic, and systemic. Treatment in most cases has been itraconazole or potassiu...Sporotrichosis is a subcutaneous mycosis caused by the Sporothrix schenckii complex. It has three classic clinical variants: fixed, lymphangitic, and systemic. Treatment in most cases has been itraconazole or potassium iodide. The aim of this paper is to communicate an unusual relapsing case treated with IK. We report a 73-year-old woman with lymphangitic sporotrichosis, adequate response to treatment with potassium iodide, and recurrence 15 months after. A molecular test was performed through the amplification of a 331 bp fragment of the calmodulin gene. In both infections, the same specie was isolated. The effects of potassium iodide are briefly discussed, and we conclude that the same treatment can be prescribed, if no side effects are observed.展开更多
Here, we present an optimization of colorimetric determination of hydrogen peroxide content in plants using potassium iodide. Our method is based on a one step buffer (extraction and reaction) for the determination of...Here, we present an optimization of colorimetric determination of hydrogen peroxide content in plants using potassium iodide. Our method is based on a one step buffer (extraction and reaction) for the determination of H2O2 in different plant tissues and overcomes interference of soluble antioxidant and color background. A particular attention is paid to buffer pH shown to be tissue dependent. With this inexpensive microplate method, it is possible to analyze 12 experimental samples in about 45 min all in triplicates, with blanks, controls and standard curve.展开更多
In the presence of diethyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate（DHP） and a catalytic amount of potassium iodide,severalα-halo ketones were easily reduced to the corresponding ketones in acetone media....In the presence of diethyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate（DHP） and a catalytic amount of potassium iodide,severalα-halo ketones were easily reduced to the corresponding ketones in acetone media.The procedure presented here showed several merits such as short reaction time,practical experimental and isolated procedure,and excellent yields of products.展开更多
Silver Diamine Fluoride (SDF) is colorless and alkaline with a pH of 10. It has been used in Japan and other international countries for decades. The Food and Drug Administration gave approval for it as a means of tre...Silver Diamine Fluoride (SDF) is colorless and alkaline with a pH of 10. It has been used in Japan and other international countries for decades. The Food and Drug Administration gave approval for it as a means of treating hypersensitivity for individuals with chronic teeth pain. SDF is also used as a method to treat and arrest dental caries. SDF application is limited due to its negative esthetic effects, which is a black stain where the cavity was present on the tooth. Topical application of potassium iodide applied immediately after SDF has been shown in studies to reduce the color change caused by SDF. This study used topical application of silver diamine fluoride (SDF) and potassium iodide (KI) treatments on bovine teeth to determine if SDF and KI were efficacious in the treatment for carious lesions. The color change was detected by use of spectrophotometric analysis to determine L, a and b readings that demarcate light and color values following staining. The conclusion was made that the application of SDF followed directly by KI treatment produced L, a and b spectrophotometric values that indicated a significant reduction in teeth staining than the application of SDF alone. Therefore, this study supports the idea that SDF and KI can be used to treat carious lesions on bovine teeth while retaining surface enamel coloration.展开更多
以聚乙二醇400(PEG-400)作溶剂,通过CuSO4/KI催化的邻氨基吡啶与苯乙酮的串联式缩合-环化-芳构化反应,发展出一种高效且环境友好型的合成2-苯基咪唑并[1,2-a]吡啶的方法.该方法具有操作简单、使用无毒性PEG-400作反应介质、催化剂安全...以聚乙二醇400(PEG-400)作溶剂,通过CuSO4/KI催化的邻氨基吡啶与苯乙酮的串联式缩合-环化-芳构化反应,发展出一种高效且环境友好型的合成2-苯基咪唑并[1,2-a]吡啶的方法.该方法具有操作简单、使用无毒性PEG-400作反应介质、催化剂安全价廉等优点.所有产物结构经1 H NMR及13 C NMR进行了确认.展开更多
采用摩尔浓度比为1∶2的I2/KI溶液对聚乙烯醇(PVA)初生凝胶丝条进行超声浸泡处理,制备了改性PVA(I-PVA)纤维;探讨了I2/KI溶液浓度对纤维拉伸性能的影响,并对I-PVA纤维的结构与性能进行了研究。结果表明:I2在PVA纤维中主要以I-5的形态存...采用摩尔浓度比为1∶2的I2/KI溶液对聚乙烯醇(PVA)初生凝胶丝条进行超声浸泡处理,制备了改性PVA(I-PVA)纤维;探讨了I2/KI溶液浓度对纤维拉伸性能的影响,并对I-PVA纤维的结构与性能进行了研究。结果表明:I2在PVA纤维中主要以I-5的形态存在,I2的加入会阻碍PVA分子链之间的氢键形成,纤维的拉伸倍数得到提高,强度和模量也有提高;I-PVA纤维的最佳热拉伸温度为150℃,比未改性PVA纤维最佳热拉伸温度降低了50℃;PVA初生纤维在空气中拉伸3倍,采用0.1 mol/L的I2/KI溶液于40℃超声浸泡1 h后,于150℃拉伸10倍,得到的I-PVA纤维的断裂强度可达14.7 c N/dtex,比未改性PVA纤维提高9.7%,最大拉伸倍数提高到36。展开更多
A simple and efficient method for the selective iodination of various aromatic compounds by using potassium iodide in the presence of benzyltnphenylphosphonium perchlorate,is reported.This method provides several adva...A simple and efficient method for the selective iodination of various aromatic compounds by using potassium iodide in the presence of benzyltnphenylphosphonium perchlorate,is reported.This method provides several advantages such as good selectivity between ortho and para positions of aromatic compounds and high yields of the products.展开更多
文摘Sporotrichosis is a subcutaneous mycosis caused by the Sporothrix schenckii complex. It has three classic clinical variants: fixed, lymphangitic, and systemic. Treatment in most cases has been itraconazole or potassium iodide. The aim of this paper is to communicate an unusual relapsing case treated with IK. We report a 73-year-old woman with lymphangitic sporotrichosis, adequate response to treatment with potassium iodide, and recurrence 15 months after. A molecular test was performed through the amplification of a 331 bp fragment of the calmodulin gene. In both infections, the same specie was isolated. The effects of potassium iodide are briefly discussed, and we conclude that the same treatment can be prescribed, if no side effects are observed.
文摘Here, we present an optimization of colorimetric determination of hydrogen peroxide content in plants using potassium iodide. Our method is based on a one step buffer (extraction and reaction) for the determination of H2O2 in different plant tissues and overcomes interference of soluble antioxidant and color background. A particular attention is paid to buffer pH shown to be tissue dependent. With this inexpensive microplate method, it is possible to analyze 12 experimental samples in about 45 min all in triplicates, with blanks, controls and standard curve.
基金the Guangdong Natural Science Foundation(No.8151063201000016)the National Natural Science Foundation of China(No.20672046) for financial support
文摘In the presence of diethyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate（DHP） and a catalytic amount of potassium iodide,severalα-halo ketones were easily reduced to the corresponding ketones in acetone media.The procedure presented here showed several merits such as short reaction time,practical experimental and isolated procedure,and excellent yields of products.
文摘Silver Diamine Fluoride (SDF) is colorless and alkaline with a pH of 10. It has been used in Japan and other international countries for decades. The Food and Drug Administration gave approval for it as a means of treating hypersensitivity for individuals with chronic teeth pain. SDF is also used as a method to treat and arrest dental caries. SDF application is limited due to its negative esthetic effects, which is a black stain where the cavity was present on the tooth. Topical application of potassium iodide applied immediately after SDF has been shown in studies to reduce the color change caused by SDF. This study used topical application of silver diamine fluoride (SDF) and potassium iodide (KI) treatments on bovine teeth to determine if SDF and KI were efficacious in the treatment for carious lesions. The color change was detected by use of spectrophotometric analysis to determine L, a and b readings that demarcate light and color values following staining. The conclusion was made that the application of SDF followed directly by KI treatment produced L, a and b spectrophotometric values that indicated a significant reduction in teeth staining than the application of SDF alone. Therefore, this study supports the idea that SDF and KI can be used to treat carious lesions on bovine teeth while retaining surface enamel coloration.
文摘以聚乙二醇400(PEG-400)作溶剂,通过CuSO4/KI催化的邻氨基吡啶与苯乙酮的串联式缩合-环化-芳构化反应,发展出一种高效且环境友好型的合成2-苯基咪唑并[1,2-a]吡啶的方法.该方法具有操作简单、使用无毒性PEG-400作反应介质、催化剂安全价廉等优点.所有产物结构经1 H NMR及13 C NMR进行了确认.
文摘采用摩尔浓度比为1∶2的I2/KI溶液对聚乙烯醇(PVA)初生凝胶丝条进行超声浸泡处理,制备了改性PVA(I-PVA)纤维;探讨了I2/KI溶液浓度对纤维拉伸性能的影响,并对I-PVA纤维的结构与性能进行了研究。结果表明:I2在PVA纤维中主要以I-5的形态存在,I2的加入会阻碍PVA分子链之间的氢键形成,纤维的拉伸倍数得到提高,强度和模量也有提高;I-PVA纤维的最佳热拉伸温度为150℃,比未改性PVA纤维最佳热拉伸温度降低了50℃;PVA初生纤维在空气中拉伸3倍,采用0.1 mol/L的I2/KI溶液于40℃超声浸泡1 h后,于150℃拉伸10倍,得到的I-PVA纤维的断裂强度可达14.7 c N/dtex,比未改性PVA纤维提高9.7%,最大拉伸倍数提高到36。
基金the Gachsaran branch,Islamic Azad University,for the partial support
文摘A simple and efficient method for the selective iodination of various aromatic compounds by using potassium iodide in the presence of benzyltnphenylphosphonium perchlorate,is reported.This method provides several advantages such as good selectivity between ortho and para positions of aromatic compounds and high yields of the products.
