Zur Aufklarung der Rolle dreier DNA Reparaturenzyme in der Hepatokarzino genese haben wir die hMTH 1,hOGG 1 und hMYHα mRNA Expression mittels RT/semi quantitativer Echtzeit PCR und der 8 OHdG Gehalt mittels H...Zur Aufklarung der Rolle dreier DNA Reparaturenzyme in der Hepatokarzino genese haben wir die hMTH 1,hOGG 1 und hMYHα mRNA Expression mittels RT/semi quantitativer Echtzeit PCR und der 8 OHdG Gehalt mittels HPLC/ECD in Tumor und Peritumorgewebe von 21 Patienten mit hepatozellularem Karzinom (HCC ) bestimmt. Es wurde gezeigt, da der 8 OHdG Gehalt im Peritumorgewebe signif ikant hoher als im Tumorgeweb e war ( P =0.006) und mit dem Entzundungsgrad korrelierte. Die hMTH 1 E xpression war im Tumorgewebe gegenuber dem Peritumorgewebe erhoht ( P =0.014). Umgekehrt war die hMYHα Expression im Peritumorgewebe signifikant hoher als im Tumorgewebe ( P =0.039). Fur die hOGG 1 Expression wurde kein deutlicher Unterschied zwischen Tumor und Peritumorgewebe beobachte t. Eine deutliche lineare Korrelation zwischen der hMTH 1 und der hOGG 1 Exp ression wurde sowohl in Tumor ( r =0.809, P < 0.001) als auch in Peritum orgewebe ( r =0.883, P <0.001) gefunden. Diese Daten sprechen fur ein e reaktive und gegen eine pathogenetische Rolle der untersuchten DNA Reparature nzyme in der Hepatokarzinogenese.展开更多
The communication in the physical layer between an interrogator and a tag of a passive Radio Frequency Identification （RFID） system operating between 860-960 MHz is defined by the Gen 2 protocol. The tag can be cons...The communication in the physical layer between an interrogator and a tag of a passive Radio Frequency Identification （RFID） system operating between 860-960 MHz is defined by the Gen 2 protocol. The tag can be considered a remote executing unit or a computer that executes instructions from the Gen 2 protocol. The selection of the parameter and command configuration within the protocol limitations is critical especially if the time available for the memory operations in a passive RFID system is limited. An effort is made to map the operation of the tag not in its states of operation as elaborately explained in the protocol but rather in its elementary format. The research reported in this article identifies all the parameters that affect the dynamic operation of the tag. The operation is further divided into singulation, read and write; identifying the significant parameters in each case. The choices of the different commands that can be adopted to perform identical operations on the tag are analyzed. The elements to consider in selecting the optimum command configuration are described. The impact of the different parameter and command configuration on the singulation, read and write time is calculated and recorded using a tested Gen 2 simulator program.展开更多
Two new genera of the ant subfamilies Dorylinae and Ponerinae are collected and described from the tropical rain forest of Xishuangbanna Nature Reserve,Yunnan Province,China. Yunodorylus gen nov belongs to the subf...Two new genera of the ant subfamilies Dorylinae and Ponerinae are collected and described from the tropical rain forest of Xishuangbanna Nature Reserve,Yunnan Province,China. Yunodorylus gen nov belongs to the subfamily Dorylinae,which is monotypic and terrestrial with 2 colonies of the species Y sexspinus sp nov. collected from the soil sample of seasonal rain forest and deciduous monsoon forest. Bannapone gen nov. belongs to the tribe Amblyoponini of Ponerinae,which is also monotypic and known only from a dealate female of the species B mulanae sp nov.collected from a soil sample in semi evergreen monsoon forest.展开更多
The complete mitochondrial cytb gene and the partial nuclear c-mos gene of Oligodon ningshaanensis Yuan, 1983 were sequenced and used for reconstructing the phylogenetic relationship of this taxon amongst alethinophid...The complete mitochondrial cytb gene and the partial nuclear c-mos gene of Oligodon ningshaanensis Yuan, 1983 were sequenced and used for reconstructing the phylogenetic relationship of this taxon amongst alethinophidian snakes. Its strong affinity to the New World subfamily Dipsadinae and the Old World species Thermophis baileyi was inferred. Hemipenial morphology found by authors conflicts with the original description and its similarity with those of the dipsadid snakes is in accordance with our molecular results. Feeding tests show that O. ningshaanensis is a malacophagous predator, which is another matchless character for this species. This behavior is described and compared with other known slug- and snail-feeding snakes. The discovery of the particular position of our subject indicates that erecting a new genus is necessary accommodate this unique species.展开更多
文摘Zur Aufklarung der Rolle dreier DNA Reparaturenzyme in der Hepatokarzino genese haben wir die hMTH 1,hOGG 1 und hMYHα mRNA Expression mittels RT/semi quantitativer Echtzeit PCR und der 8 OHdG Gehalt mittels HPLC/ECD in Tumor und Peritumorgewebe von 21 Patienten mit hepatozellularem Karzinom (HCC ) bestimmt. Es wurde gezeigt, da der 8 OHdG Gehalt im Peritumorgewebe signif ikant hoher als im Tumorgeweb e war ( P =0.006) und mit dem Entzundungsgrad korrelierte. Die hMTH 1 E xpression war im Tumorgewebe gegenuber dem Peritumorgewebe erhoht ( P =0.014). Umgekehrt war die hMYHα Expression im Peritumorgewebe signifikant hoher als im Tumorgewebe ( P =0.039). Fur die hOGG 1 Expression wurde kein deutlicher Unterschied zwischen Tumor und Peritumorgewebe beobachte t. Eine deutliche lineare Korrelation zwischen der hMTH 1 und der hOGG 1 Exp ression wurde sowohl in Tumor ( r =0.809, P < 0.001) als auch in Peritum orgewebe ( r =0.883, P <0.001) gefunden. Diese Daten sprechen fur ein e reaktive und gegen eine pathogenetische Rolle der untersuchten DNA Reparature nzyme in der Hepatokarzinogenese.
文摘The communication in the physical layer between an interrogator and a tag of a passive Radio Frequency Identification （RFID） system operating between 860-960 MHz is defined by the Gen 2 protocol. The tag can be considered a remote executing unit or a computer that executes instructions from the Gen 2 protocol. The selection of the parameter and command configuration within the protocol limitations is critical especially if the time available for the memory operations in a passive RFID system is limited. An effort is made to map the operation of the tag not in its states of operation as elaborately explained in the protocol but rather in its elementary format. The research reported in this article identifies all the parameters that affect the dynamic operation of the tag. The operation is further divided into singulation, read and write; identifying the significant parameters in each case. The choices of the different commands that can be adopted to perform identical operations on the tag are analyzed. The elements to consider in selecting the optimum command configuration are described. The impact of the different parameter and command configuration on the singulation, read and write time is calculated and recorded using a tested Gen 2 simulator program.
文摘Two new genera of the ant subfamilies Dorylinae and Ponerinae are collected and described from the tropical rain forest of Xishuangbanna Nature Reserve,Yunnan Province,China. Yunodorylus gen nov belongs to the subfamily Dorylinae,which is monotypic and terrestrial with 2 colonies of the species Y sexspinus sp nov. collected from the soil sample of seasonal rain forest and deciduous monsoon forest. Bannapone gen nov. belongs to the tribe Amblyoponini of Ponerinae,which is also monotypic and known only from a dealate female of the species B mulanae sp nov.collected from a soil sample in semi evergreen monsoon forest.
文摘The complete mitochondrial cytb gene and the partial nuclear c-mos gene of Oligodon ningshaanensis Yuan, 1983 were sequenced and used for reconstructing the phylogenetic relationship of this taxon amongst alethinophidian snakes. Its strong affinity to the New World subfamily Dipsadinae and the Old World species Thermophis baileyi was inferred. Hemipenial morphology found by authors conflicts with the original description and its similarity with those of the dipsadid snakes is in accordance with our molecular results. Feeding tests show that O. ningshaanensis is a malacophagous predator, which is another matchless character for this species. This behavior is described and compared with other known slug- and snail-feeding snakes. The discovery of the particular position of our subject indicates that erecting a new genus is necessary accommodate this unique species.
