The identity of two Lyristes species described by Schmidt is readdressed based on examination of the type materials. Lyristes wui Schmidt, 1932 is recognized to be a junior synonym of Salvazana mirabilis Distant, 1913...The identity of two Lyristes species described by Schmidt is readdressed based on examination of the type materials. Lyristes wui Schmidt, 1932 is recognized to be a junior synonym of Salvazana mirabilis Distant, 1913, and Lyristes altaiensis Schmidt, 1932 is a junior synonym of a North American species, Neotibicen resh （Haldeman, 1852）. Lyristes altaiensis may have been erroneously recorded from China most possibly due to the mislabeling of the holotype.展开更多
This paper mainly summarizes recent advances in the classification of Bursaphelenchus species, introduces several common methods of molecular biologi- cal detection and identification methods, and analyzes the advanta...This paper mainly summarizes recent advances in the classification of Bursaphelenchus species, introduces several common methods of molecular biologi- cal detection and identification methods, and analyzes the advantages and disad- vantages of these methods.展开更多
In this study, a thermophilic oil-degrading bacterial consortium KO8-2 growing within the temperature range of 45--65℃ （with 55℃ being the optimum temperature） was isolated from oil-contaminated soil of Karamay in...In this study, a thermophilic oil-degrading bacterial consortium KO8-2 growing within the temperature range of 45--65℃ （with 55℃ being the optimum temperature） was isolated from oil-contaminated soil of Karamay in Xinjiang, China. Denaturing gradient gel electrophoresis （DGGE） showed that there were nine strains included in KO8-2, which originated from the genera of Bacillus, Geobacillus and Clostridium. They all belonged to thermophilic bacteria, and had been previously proved as degraders of at least one petroleum fraction. The crude oil degraded by KO8-2 was analyzed by infrared spectrophotometry, hydrocarbon group type analysis and gas chromatography. The results indicated that the bacterial consortium KO8-2 was able to utilize 64.33% of saturates, 27.06% of aromatics, 13.24% of resins and the oil removal efficiency reached up to 58.73% at 55 ~C when the oil concentration was 10 g/L. Detailed analysis showed that KO8-2 was able to utilize the hydrocarbon components before C19, and the n-alkanes ranging from C20--C33 were signifi- cantly degraded. The ratios of nC17/Pr and nC18/Ph were 3.12 and 3.87, respectively, before degradation, whereas after degradation the ratios reduced to 0.21 and 0.38, respectively. Compared with the control sample, the oil removal efficiency in KO8-2 composting reactor reached 50.12% after a degradation duration of 60 days.展开更多
The aim of the present study was monitoring ofAspergillus spp. in six different hospitals in ｜stanbul. The authors know that disease like aspergillosis illness caused by Aspergillus spp. is very dangerous for people...The aim of the present study was monitoring ofAspergillus spp. in six different hospitals in ｜stanbul. The authors know that disease like aspergillosis illness caused by Aspergillus spp. is very dangerous for people＇s health. Therefore, the present work has been performed to evaluate the hospitals＇ environment. Petri-plate method has been performed for isolation. Samples were taken at six different hospitals and various locations of each. 13 different Aspergillus species and 141 Aspergillus colonies have been isolated in totally. Maximally isolated species are： Aspergillus niger （29.1%）. A. nidulans （21.3%）, A. candidus （12.8%）, A. ochraceus （9.2%）, and A. versicolor （7.8%）. A. fumigates, A. flavus are the most pathogen species in human which have been isolated minimally.展开更多
The aim of this study was to determine the volatile composition of essential oil of four Picea Mill. species （Piceapungens Engelm., Picea mariana （Mill.） Britton, Picea glauca （Moench） Voss., Picea rubens Sarg.）...The aim of this study was to determine the volatile composition of essential oil of four Picea Mill. species （Piceapungens Engelm., Picea mariana （Mill.） Britton, Picea glauca （Moench） Voss., Picea rubens Sarg.） needles. The volatile components extracted from these four species needles were analyzed by using headspace solid phase microextraction （HS-SPME）/gas chromatography-mass spectrum （GC-MS） and 31, 34, 27 and 24 compounds were identified representing 91.77%, 92.70% 92.38% and 94.06% of the total oil, respectively. The major constituents were found to be bornylacetate （29.40%）, camphor （26.43%）, 13-myrcene （7.47%） and camphene （7.01%） in P. pungens; camphene （22.03%）, bornylacetate （21.64%）, α-pinene （16.62%） and borneol （7.79%） in P. mariana; bornylacetate （31.25%）, limonene （17.27%）, α-pinene （15.85%）; camphene （13.65%） in P. glauca and borneol （12.38%）, α-pinene （10.36%）, germacrene D （9.86%） and δ-cadinene （8.25%） in P. rubens. This study sought to detecte new phytochemical data on the Picea genus to help chemotaxonomy and usable of studied species.展开更多
Silica gel impregnated with 1% aqueous solutions of different metal cations （Li^＋, Mg^2＋, Zn^2＋, Cu^2＋, Co^2＋, Ni^2＋, Ba^2＋and Th^4＋） has been used for the analysis of nonionic and cationic surfaetants using...Silica gel impregnated with 1% aqueous solutions of different metal cations （Li^＋, Mg^2＋, Zn^2＋, Cu^2＋, Co^2＋, Ni^2＋, Ba^2＋and Th^4＋） has been used for the analysis of nonionic and cationic surfaetants using simple aqueous acetone as mobile phase system. Co^2＋ was found the most suitable impregnant for the mutual separation of nonionic surfactants （Brij-35 and Brij-57） and cationic from nonionic surfactants （tetmdecyltrimethylammonium bromide and Cween-20）. Zinc sulphate impregnation （Zn^2＋-silica gel） shows identical chromatographic behavior and these layers are useful to separate nonionic surfactant （Brij-35） from cationic surfaetant （cetylpyridinium chloride）. The mutual separation of B J-35 and B J-57 is not influenced by the presence of optical brightener in the sample.展开更多
Phytochemical investigation of the leaves of Premna microphylla Turcz led to the isolation of 13 known compounds. Based on spectroscopic and chemical evidences, their structures were identified as diosmetin （1）, blu...Phytochemical investigation of the leaves of Premna microphylla Turcz led to the isolation of 13 known compounds. Based on spectroscopic and chemical evidences, their structures were identified as diosmetin （1）, blumenol A （2）, （3S,5R,6S,7E,9R）-5,6-epoxy-3,9-dihydroxy-7-megastigmene （3）, 3β-hydroxy-5a,6a-epoxy-γ-megastigmen-9-one （4）, ixerol B （5）, （-）-dehydrovomifoliol （6）, 3S,5R-dihydroxy-6S,7-megastigmadien-9-one （7）, loliotide （8）, （＋）-dehydrololiolide （9）, （＋）-medioresinol （10）, 4-oxopinoresinol （11）, tormentic acid （12）, and indole-3-carboxylic acid （13）. Compounds 2-13 described above were isolated from this genus for the first time.展开更多
文摘The identity of two Lyristes species described by Schmidt is readdressed based on examination of the type materials. Lyristes wui Schmidt, 1932 is recognized to be a junior synonym of Salvazana mirabilis Distant, 1913, and Lyristes altaiensis Schmidt, 1932 is a junior synonym of a North American species, Neotibicen resh （Haldeman, 1852）. Lyristes altaiensis may have been erroneously recorded from China most possibly due to the mislabeling of the holotype.
基金Supported by Science Research Project of Ningbo Entry-Exit Inspection and Quarantine Bureau(YK12-2013)~~
文摘This paper mainly summarizes recent advances in the classification of Bursaphelenchus species, introduces several common methods of molecular biologi- cal detection and identification methods, and analyzes the advantages and disad- vantages of these methods.
基金the support provided by the Research&Technology Development Project of China National Petroleum Corporation(No.2008D-4704-2)
文摘In this study, a thermophilic oil-degrading bacterial consortium KO8-2 growing within the temperature range of 45--65℃ （with 55℃ being the optimum temperature） was isolated from oil-contaminated soil of Karamay in Xinjiang, China. Denaturing gradient gel electrophoresis （DGGE） showed that there were nine strains included in KO8-2, which originated from the genera of Bacillus, Geobacillus and Clostridium. They all belonged to thermophilic bacteria, and had been previously proved as degraders of at least one petroleum fraction. The crude oil degraded by KO8-2 was analyzed by infrared spectrophotometry, hydrocarbon group type analysis and gas chromatography. The results indicated that the bacterial consortium KO8-2 was able to utilize 64.33% of saturates, 27.06% of aromatics, 13.24% of resins and the oil removal efficiency reached up to 58.73% at 55 ~C when the oil concentration was 10 g/L. Detailed analysis showed that KO8-2 was able to utilize the hydrocarbon components before C19, and the n-alkanes ranging from C20--C33 were signifi- cantly degraded. The ratios of nC17/Pr and nC18/Ph were 3.12 and 3.87, respectively, before degradation, whereas after degradation the ratios reduced to 0.21 and 0.38, respectively. Compared with the control sample, the oil removal efficiency in KO8-2 composting reactor reached 50.12% after a degradation duration of 60 days.
文摘The aim of the present study was monitoring ofAspergillus spp. in six different hospitals in ｜stanbul. The authors know that disease like aspergillosis illness caused by Aspergillus spp. is very dangerous for people＇s health. Therefore, the present work has been performed to evaluate the hospitals＇ environment. Petri-plate method has been performed for isolation. Samples were taken at six different hospitals and various locations of each. 13 different Aspergillus species and 141 Aspergillus colonies have been isolated in totally. Maximally isolated species are： Aspergillus niger （29.1%）. A. nidulans （21.3%）, A. candidus （12.8%）, A. ochraceus （9.2%）, and A. versicolor （7.8%）. A. fumigates, A. flavus are the most pathogen species in human which have been isolated minimally.
文摘The aim of this study was to determine the volatile composition of essential oil of four Picea Mill. species （Piceapungens Engelm., Picea mariana （Mill.） Britton, Picea glauca （Moench） Voss., Picea rubens Sarg.） needles. The volatile components extracted from these four species needles were analyzed by using headspace solid phase microextraction （HS-SPME）/gas chromatography-mass spectrum （GC-MS） and 31, 34, 27 and 24 compounds were identified representing 91.77%, 92.70% 92.38% and 94.06% of the total oil, respectively. The major constituents were found to be bornylacetate （29.40%）, camphor （26.43%）, 13-myrcene （7.47%） and camphene （7.01%） in P. pungens; camphene （22.03%）, bornylacetate （21.64%）, α-pinene （16.62%） and borneol （7.79%） in P. mariana; bornylacetate （31.25%）, limonene （17.27%）, α-pinene （15.85%）; camphene （13.65%） in P. glauca and borneol （12.38%）, α-pinene （10.36%）, germacrene D （9.86%） and δ-cadinene （8.25%） in P. rubens. This study sought to detecte new phytochemical data on the Picea genus to help chemotaxonomy and usable of studied species.
文摘Silica gel impregnated with 1% aqueous solutions of different metal cations （Li^＋, Mg^2＋, Zn^2＋, Cu^2＋, Co^2＋, Ni^2＋, Ba^2＋and Th^4＋） has been used for the analysis of nonionic and cationic surfaetants using simple aqueous acetone as mobile phase system. Co^2＋ was found the most suitable impregnant for the mutual separation of nonionic surfactants （Brij-35 and Brij-57） and cationic from nonionic surfactants （tetmdecyltrimethylammonium bromide and Cween-20）. Zinc sulphate impregnation （Zn^2＋-silica gel） shows identical chromatographic behavior and these layers are useful to separate nonionic surfactant （Brij-35） from cationic surfaetant （cetylpyridinium chloride）. The mutual separation of B J-35 and B J-57 is not influenced by the presence of optical brightener in the sample.
基金National Natural Science Foundation of China(Grant No.31270390)Program for New Century Excellent Talents in University(Grant No.NCET-08-0224)
文摘Phytochemical investigation of the leaves of Premna microphylla Turcz led to the isolation of 13 known compounds. Based on spectroscopic and chemical evidences, their structures were identified as diosmetin （1）, blumenol A （2）, （3S,5R,6S,7E,9R）-5,6-epoxy-3,9-dihydroxy-7-megastigmene （3）, 3β-hydroxy-5a,6a-epoxy-γ-megastigmen-9-one （4）, ixerol B （5）, （-）-dehydrovomifoliol （6）, 3S,5R-dihydroxy-6S,7-megastigmadien-9-one （7）, loliotide （8）, （＋）-dehydrololiolide （9）, （＋）-medioresinol （10）, 4-oxopinoresinol （11）, tormentic acid （12）, and indole-3-carboxylic acid （13）. Compounds 2-13 described above were isolated from this genus for the first time.
