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本文描述了１０只中华竹鼠的Ｔ．Ｒ．Ｐ和２５项血液生理生化指标。除ＡＭＳ的活性极高（３２１２５±２２３６．０７）、ＡＫＰ的活性很低（１．５３±１．０７）外，其余项目与啮齿类其他动物无大差别。

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In view of the security problem of end-to-end data transmission in mobile communication, this study proposes a message transmission method based on pitch delay steganography used for mobile voice channel, which hides the intended data in the voice signal. The algorithm uses secret information to control the parity characteristics of pitch delay value in the voiced part of speech, so as to embed data bits. The pitch delay value of the voiceless part is quantified and output by secret information to realize the embedding of steganographic information. The pitch delay change caused by embedding does not cause serious degradation of the original speech quality, so it is difficult for the outside world to detect hidden data information when transmitting speech signals. This algorithm can ensure the security and privacy of end-to-end information transmission. The simulation results show that the transmission rate of secret information can reach 200 bit·s-1 and the accuracy rate is about 94%. [ABSTRACT FROM AUTHOR]

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Copyright of Geology & Exploration is the property of Geology & Exploration Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Coal Geology & Exploration is the property of Xian Research Institute of China Coal Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Lubrication Engineering (0254-0150) is the property of Editorial Office of LUBRICATION ENGINEERING and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Food & Machinery is the property of Food & Machinery Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To explore the expression and significance of serum DKK1 in patients with gastric cancer. Methods We selected 170 gastric cancer patients (gastric cancer group) and 170 subjects with nongastric cancer during the same period (control group). ELISA was used to detect the DKK1 level. The ROC curve was used to evaluate the diagnostic performance, and we analyzed the relation between DKK1 level and age, gender, family history of gastric cancer, cigarette smoking, alcohol consumption, tumor size, TNM stage, infiltration depth, lymph node metastasis, liver metastasis, vascular invasion, perineural invasion. Results The serum DDK1 level in GC patients was higher than that in control group (P<0.0001). ROC curve showed that the possible optimal cut-off value of DKK1 for gastric cancer patients was 167.8 pg/ml, AUC was 0.908, sensitivity was 80.59%, and specificity was 84.71%. There was no significant relation between the serum DKK1 level and age, gender, family history of gastric cancer, cigarette smoking, alcohol consumption, tumor size, liver metastasis, vascular invasion or distant metastasis (all P>0.05). However, DKK1 level was significantly related with TNM stage, infiltration depth, lymph node metastasis and perineural invasion (all P<0.05). Conclusion Serum DKK1 level is higher in gastric cancer patients than that of control group and related with the severity of lesions, which indicates that serum DKK1 may be a potential biomarker for gastric cancer screening. [ABSTRACT FROM AUTHOR]

Copyright of Food & Machinery is the property of Food & Machinery Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Petrocodon chongqingensis(Gesneriaceae), a new species from Chongqing City, China, is described and illustrated here. This new species morphologically resembles P. hunanensis, and different from the latter in lacking elongated rhizome, petioles densely white villous, both surfaces of leaf blades densely villous and pubescent, bracts alternate, linear to linear-lanceolate, 1.3-1.5 × ca. 0.4 mm, corolla fuchsia to reddish purple, 3-5 cm long, ovary ca. 2 cm long and no stipitate. The conservation status of P. chongqingensis is provisionally assessed as “Vulnerable”(VU)according to IUCN Red List categories. The micromorphological characteristics of seed and pollen grain of the new species and seed of its congener were observed by using scanning electron microscope(SEM). Seed shape of the new species and its congener are narrowly oblong, exine ornamentation of P. chongqingensis has rounded, oblong or irregular cave and irregular protrusions, caves also with irregular protrusions. Exine ornamentation of P. hunanensis is reticulate, lumina is rectangular square or irregular, lumina with irregular protrusions. The pollen grain shape of P. chongqingensis is prolate, circular in polar view and oblong in equatorial view, exine ornamentation is microreticulate to perforate, ridge of reticulum with granulate protrusions. [ABSTRACT FROM AUTHOR]