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为促进食用植物油全国统一大市场建设，依据“一价定律”理论，基于期货价格数据，运用协整检验、向量误差修正模型、脉冲响应分析、方差分解分析等计量方法，分析食用植物油市场多种油品的均衡比价关系，并提出相关建议。结果表明：在期货价格引导下，通过套利机制的作用，多种食用植物油之间价格信息相互联通，存在长期均衡关系，多种油品的供给、需求、价格动态协调，共同构成一个统一大市场；从加强油脂油料期货市场建设、积极推动期货市场功能宣讲和利用、提升大豆和油料的国内生产能力、广泛挖掘多种食用植物油的供给潜力和有效维护进口环节经济利益等角度提出促进食用植物油全国统一大市场建设的建议。To promote the construction of a unified national market for edible vegetable oils, according to the theory of "one-price law", based on the data of the futures prices of edible vegetable oils, using cointegration test, vector error correction model, impulse response analysis, variance decomposition analysis were used to analyze the equilibrium price relationship between a variety of edible vegetable oils, and relevant suggestions were proposed. The results showed that it was interconnected that the price information between a variety of edible vegetable oils with the guidance of futures prices and the arbitrage mechanism, and they had a long-term equilibrium relationship. There was a dynamic coordination relationship between the supply, the demand and the price of a variety of vegetable oils, and they together formed a unified market. The suggestions such as strengthening the construction of the oils and the oilseeds futures markets, actively promoting the promotion and utilization of futures market functions, improving the domestic production capacity of soybean and oilseeds, widely tapping into the supply potential of various edible vegetable oils and effectively safeguarding the economic interests of the import link were put forward to promote the construction of a unified national market for edible vegetable oils.

以陕西省动物研究所2018年5月—2022年1月受理的野生动物鉴定案件为基础,统计和分析龟鳖类动物案件的基本情况。结果显示:共鉴定龟鳖类野生动物案件39起,涉案龟类59只,隶属于8科15属17种,其中76.47%(13种)的物种原产于国外,国家一、二级或CITES附录Ⅰ、Ⅱ保护物种占64.71%(11种)。从统计结果看,陕西省非法利用的龟鳖类物种较多,新物种时有出现; 非法贸易向线上交易转移,违法手段隐蔽性增强。建议加强对实体和网络市场的监督,建立“查处—鉴定—收容”多部门联合处理案件的机构,加强野生动物普法宣传。

文章采用FDTD（时域有限差分）法,通过数值计算得到了一种新型PCRR（光子晶体环形谐振腔）的宽带频响特性,并分析了介电常数对PCRR传输特性的影响。在此基础上建立了一个三波长的光子晶体分频器,结合对该模型中光场强度动态分布图的分析,实现了在1 5001、550和1 610 nm 3个波长处的分频功能。数值结果表明:与微腔特性相比,PCRR能同时得到多个窄频信号,并且在多波长分频器中可以减少微腔的个数;与波导耦合相比,在结构参数设计上更加灵活。

我国野生动物资源十分丰富,可供制裘用的就有80多种,成为世界上较大的裘皮出口国之一.而其中很多种类是我国传统的出口商品,在国际场上享有盛誉,每年为国家换回大量外汇.虽然我国利用毛皮有悠久的历史,但对生皮的初步加工、鞣制、成品制作等方面,还此较落后。所以,有许多种裘皮仍处于生皮出口状态,这就大大的减少了换汇率。以黑龙江省产的灰鼠皮为例:1983年一张生灰鼠皮的出口价为3.7美元,而由24张皮制成的全灰鼠皮褥子 （皮鞣制后缝成24×48时的制服装的原料） 每条出口价为132美元 （平均每张灰鼠皮的出口价为5.5美元）。扭转生皮出口的关键不仅要改进落后的鞣制方法,还要从根本上改变生皮的防腐方法。否则,由于防腐方法不当会破坏皮张的组织

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Copyright of Journal of Shanghai Jiao Tong University (1006-2467) is the property of Journal of Shanghai Jiao Tong University 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.)

Copyright of Chinese Journal of Refrigeration Technology is the property of Shanghai Society of Refrigeration 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.)

In order to solve the problem of discomfort caused by vehicle flutter, the causes and influencing factors of vehicle flutter when starting or shifting were studied. Firstly, the causes and characteristics of flutter were analyzed, and the self-induced vibration model and stress vibration model were established. Then, through the actual test and Simulation of vehicle flutter, the conditions and mechanism of vehicle self-induced flutter and pressure-induced flutter were analyzed. Finally, the effects of various factors on vehicle flutter were discussed. The results show that the flutter occurs only in the clutch sliding stage, the negative friction coefficient gradient of the facing will elicit the vehicle self-induced flutter, and the changes of engine absolute speed, the speed differential between the clutch disc and the pressure plate, the speed of the transmission and crankshaft axial vibrations will lead to the pressure-induced flutter. The vehicle flutter can be effectively reduced by increasing the friction coefficient gradient of the facing, building in a softer cushion, logically restricting the product tolerances, pre-tightening components in assembly and increasing the damping in the drive train, to improve the driving and riding comfort of the vehicle. Which provides the improvement direction for the design and manufacture of the clutch. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Mental Health Journal / Zhongguo Xinli Weisheng Zazhi is the property of Chinese Mental Health Journal 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 Chinese Mental Health Journal / Zhongguo Xinli Weisheng Zazhi is the property of Chinese Mental Health Journal 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 Chinese Mental Health Journal / Zhongguo Xinli Weisheng Zazhi is the property of Chinese Mental Health Journal 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 Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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 Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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 Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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 Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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 Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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.)

Objective: To detect the expression of the miR196a, miR146a, miR27a and miR200a in patients with colon cancer, and discuss the effect of miR27a on colon cancer cells. Methods: The expression of the miR196a, miR146a, miR27a and miR200a in the colon of patients with colon cancer was detected by PCR. The proliferation and invasion of colon cancer cells was detected by transfection technique to increase or reduce the expression of miR27a. Results: Compared with the normal group and colitis group, the expression of miR27a in the colon of the colon cancer group was increased significantly. For the miR27a mimics transfection group (P<0.05), the proliferation and invasion of colon cancer cell was significantly enhanced (P<0.05), and the proliferation and invasion of colon cancer cells was reduced significantly in the miR27a inhibitors transfected group(P<0.05). And the differences were statistically significant (P<0. 05). Conclusion: The expression of miR27a in the colon of patients with colon cancer is significantly increased, and miR27a can enhance the proliferation and invasion capacity of colon cancer cells. [ABSTRACT FROM AUTHOR]

针对陕西渭河流域本土龟鳖（Testudines）资源日益减少与外来龟鳖物种日益增多的现状，2017年4月和2019年7月，利用笼捕法和访问调查法，对陕西省渭河流域龟鳖类野外群体分布进行了调查。结果显示：陕西省渭河流域外来龟鳖类主要以红耳龟（Trachemys scripta elegans）为主，同时发现有外来物种蛇鳄龟（Chelydra serpentina）的分布，本地龟鳖类物种仅发现中华鳖（Pelodiscus sinensis）。对外来龟鳖类物种的入侵风险进行了分析，并提出相应的预防和管理措施。

巫山布氏角蟾(Boulenophrys wushanensis)为我国特有物种,主要分布于陕西、甘肃、四川、重庆和湖北等地。2016年6月,在对陕西省楼观台实验林场进行动物资源调查时,采集到1号蟾类标本(34°N,108°22’E; 海拔1 010 m),经鉴定为角蟾科(Megophryidae)布氏角蟾属(Boulenophrys)巫山布氏角蟾,经查阅相关文献[1-5],确定为陕西省内秦岭以北首次发现。该标本为雌性,肛部上方呈弧状凸出,第一、二指无婚刺,趾部无蹼。体长37.9 mm,据记载雌蟾成体长38 mm左右[6],该蟾发育为成体阶段。头长11.8 mm,头宽12.0 mm,头部长宽几乎相等。吻部显著突出于下唇,鼓膜2.1 mm,大而圆。背部较为光滑,有成排的痣粒,体侧有小疣粒,腹面光滑,腋腺位于胸侧且小,股后腺明显。前臂及掌长14.4 mm,不到体长一半。指、趾端圆,趾间有蹼迹。体背面浅褐色,两眼间有深褐色