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61.
A fatal case of suspected anaphylaxis with cefoperazone and sulbactam: LC-MS analysis 总被引:1,自引:0,他引:1
Tsujikawa K Kuwayama K Miyaguchi H Kanamori T Iwata Y Inoue H Kishi T 《Journal of forensic sciences》2008,53(1):226-231
Cefoperazone and sulbactam are prescribed in combination and used in the treatment of moderate to severe bacterial infections. Serious anaphylaxis is a rare side effect. This report describes a fatal case of suspected anaphylaxis after intravenous administration of a combination of the two drugs. Heart blood was analyzed for cefoperazone by protein precipitation with acetonitrile and by liquid-liquid precipitation for sulbactam after protein precipitation with aqueous acetonitrile, followed by tandem mass spectrometry in the product ion scan mode for identification and by liquid chromatography mass spectrometry in the selected ion monitoring mode for quantitation. Calibration curves for cefoperazone and sulbactam were linear over the range 0.07 to 1.93 and 0.046 to 0.914 microg/ml respectively. The decedent's blood concentrations of cefoperazone and sulbactam were 0.368 and 0.143 microg/ml respectively. As these concentrations were below concentrations reported after single dosing studies and below those considered to be minimally inhibitory, death was presumed to have been caused by hypersensitivity and not an overdose. In conclusion, this procedure is useful for detecting and quantitating cefoperazone and sulbactam in postmortem blood and may be useful in the evaluation of anaphylaxis. 相似文献
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63.
Characterization and Differentiation of Geometric Isomers of 3‐methylfentanyl Analogs by Gas Chromatography/Mass Spectrometry,Liquid Chromatography/Mass Spectrometry,and Nuclear Magnetic Resonance Spectroscopy
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Tatsuyuki Kanamori Ph.D. Yuko T. Iwata Ph.D. Hiroki Segawa Ph.D. Tadashi Yamamuro Ph.D. Kenji Kuwayama Ph.D. Kenji Tsujikawa Ph.D. Hiroyuki Inoue Ph.D. 《Journal of forensic sciences》2017,62(6):1472-1478
The cis and trans isomers of 3‐methylfentanyl and its three analogs were chemically synthesized, and these compounds were characterized and differentiated by gas chromatography/mass spectrometry (GC/MS), liquid chromatography/mass spectrometry (LC/MS), and nuclear magnetic resonance (NMR) spectroscopy. The cis and trans isomers of the 3‐methylfentanyl analogs were completely separated by GC/MS. Although the high temperature of the GC injection port caused thermal degradation of β‐hydroxy‐3‐methylfentanyl, the degradation was completely suppressed by trimethylsilyl derivatization. The isomers were also well separated by LC/MS on an octadecylsilyl column with 10 mM ammonium acetate and methanol as the mobile phase. The proton NMR signals were split when the hydrochloride salts of the 3‐methylfentanyl analogs were dissolved in deuterated chloroform because stereoisomers were formed by the coordination of the hydrochloride proton to the nitrogen of the piperidine ring of the 3‐methylfentanyl analogs. 相似文献
64.
This article discusses the ANZUS (Australia, New Zealand andthe United States) security treaty negotiations, with specialemphasis on the 1951 Canberra talks, and examines why the USentered into a formal security alliance with Australia and NewZealand. It argues that the US concluded the security treatywith Australia and New Zealand in order to obtain their politicalsupport for a proposed American peace treaty with Japan, whichwould allow unconditional revitalization of Japanese militarypower. It is also the argument of this article that the US createdANZUS as a means of consolidating its own strategic positionin Northeast Asia by committing Australia and New Zealand tothe defense of US bases and forces stationed on the Japaneseislands. 相似文献
65.
Yoshimoto T Yamamoto T Mizutani M Uchihi R Ohtaki H Katsumata Y Waiyawuth W Songsivilai S 《Journal of forensic sciences》2003,48(1):116-121
We have previously reported a new triplex amplification and typing system by silver staining for three short tandem repeat (STR) loci, 9q2h2 (D2S3020), D15S233, and D14S299 without "microvariant" alleles such as .1, .2, and, .3 alleles in the Japanese population. In the present study, we established a new quadruplex system with an additional locus D7S809 using primer sets labeled with fluorescent multi-color dyes. Using this system, we genotyped 183 Thai people, found only one "microvariant" allele (allele 20.2) at D7S809, and calculated allele frequencies and some statistical properties at these four STR loci. From these allele frequencies at four STR loci, we performed three statistical analyses including a homozygosity test, a likelihood ratio test, and an exact test for Hardy-Weinberg equilibrium (HWE). Deviations from HWE (p < 0.05) were observed only in the two tests at the locus D7S809. In the present study, we compared the allele frequencies at these four loci in the Thai population to those in the Japanese population described previously. Consequently, all observed heterozygosities and power of discrimination (PD) at those loci in the Thai population were higher than 0.8 and 0.9, respectively, and all statistical values for discriminating power in the Thai population were slightly higher than those in the Japanese population. The combined paternity exclusion rate (combined PE) in the Thai population (0.978) was almost the same as that in the Japanese population (0.971). Therefore, this novel PCR amplification and typing system for four STR loci would be a convenient and informative DNA profiling system in the forensic field. 相似文献
66.
Tsujikawa K Kanamori T Iwata Y Ohmae Y Sugita R Inoue H Kishi T 《Forensic science international》2003,138(1-3):85-90
Morphological and toxicological analyses were performed on hallucinogenic mushrooms that are currently circulated in Japan. Scanning electron microscope (SEM) indicated a three-dimensional microstructures in the mushrooms. The complementary use of SEM with an optical microscope was effective for observing characteristic tissues, such as basidiomycetes, spores, cystidia and basidia. Hallucinogenic alkaloids were extracted with methanol and determined by high performance liquid chromatography (HPLC) with a UV detector set at 220 nm. The psilocin/psilocybin contents in Psilocybe cubensis were in the range of 0.14-0.42%/0.37-1.30% in the whole mushroom (0.17-0.78%/0.44-1.35% in the cap and 0.09-0.30%/0.05-1.27% in the stem), respectively. The hallucinogenic alkaloids in Copelandia were 0.43-0.76%/0.08-0.22% in the whole mushroom (0.64-0.74%/0.02-0.22% in the cap and 0.31-0.78%/0.01-0.39% in the stem). It thus appears that P. cubensis is psilocybin-rich, whereas Copelandia is psilocin-rich. 相似文献
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68.
Crossed immunoelectrophoretic (CIEP) patterns were examined for the purpose of individualization of bloodstains. For comparison the areas of peaks were measured and ratios of the areas of corresponding peaks were calculated. To assess the dispersion of the ratios, the coefficient of variation (CV) was calculated as CV = 100 X standard deviation/mean of ratios. With 1-month-old bloodstains there were significant differences in the distributions of CV between the groups of the same and those of different origin. These results indicate that CIEP is useful as a means of identifying the origin of bloodstains. 相似文献