The Role of Scientific Excellence in the Changing Meaning of Maize in Mexico

Making policy is giving a meaning to objects. This perspective on policy making gained importance in the 1990s with the emergence of discursive approaches. In this article, we use the concepts of Hajer's discourse coalition approach to shed light on the evolving meaning of maize in Mexican society. Specifically, we trace a parallel between the evolution of biotechnology policy and discourses on maize over a 25‐year period. The article argues that until recently, the protection against biotechnological manipulations enjoyed by maize has been bolstered by a discourse granting the plant a special status in the country's history. However, the emergence of a new discourse grounded on the practice of scientific excellence is now challenging the old perspectives, and also finding support among government officials. As a result, the Mexican policies granting maize special protection is changing, and this policy change will likely trigger changes in the symbolic meaning of maize.     

论应用ISO9000标准建立文档一体化质量管理体系

本文认为参照ISO9000国际质量标准,建立和健全档案质量管理体系是档案工作发展的一个珏然趋势。并通过对ISO9000标准的介绍来对档案工作如何建立质量管理体系提出建议。     

Analysis of the testimonial evidence of Portugal’s first major forensic case: part II

The crime possibly perpetrated by a doctor named Vicente Urbino de Freitas in 1890 is one of the most famous cases of poisoning, and it had echoes in the Portuguese and foreign press for several decades. This prestigious doctor was convicted of the fatal poisoning of his nephew. He also attempted the homicide of two nieces and their mother-in-law, who only escaped because they obstinately refused to comply with the “therapeutics” prescribed by the family doctor. The motive of the crime should have been Vicente Urbino de Freitas’ ambition to receive the family inheritance of his wife, the daughter of the well-known merchant José António Sampaio of Flores Street in Porto. Vicente Urbino de Freitas was convicted but doubt about his guilt persists for more than a century. This second work aimed to collect and analyse all the relevant and contradictory testimonial evidence of the prosecution and defence witnesses. This case represents an odd historical record obtained through more than 12 years of research on the first major significant Portuguese forensic case. Rare and unprecedented testimonial evidence and photographs were obtained from different countries and then repaired, since these also provide an important historical record of the medical photography.     

Inside Lobbying on the Regulation of New Plant Breeding Techniques in the European Union: Determinants of Venue Choices

In July 2018, the Court of Justice of the European Union decided that new plant breeding techniques (NPBTs) fall within the scope of the restrictive provisions on genetically modified organisms (GMOs). Previously, various actors had lobbied in order to influence the European Union’s (EU’s) regulatory decision on NPBTs. This study examines the venue choices taken by Cibus, a biotech company that promoted NPBT deregulation. It shows that the firm bypassed the EU level and that it lobbied competent authorities (CAs) in certain member states to gain support for the deregulation of NPBTs. Cibus chose the CAs because their institutional “closedness” reduced the risk of the debate over the deregulation of NPBTs becoming public. However, the CA’s specific competences and their influence on EU decision making were of likewise importance. The firm lobbied CAs based in Finland, Germany, Ireland, Sweden, Spain, and the United Kingdom. Two factors appear to have influenced Cibus’ choices for these countries: high‐level political support for agribiotech and the high relevance of biotech sectors. In contrast, public support for GMOs turned out to have hardly any influence, and virtually no association could be observed for the agricultural application of biotechnology in the past nor for the weakness of domestic anti‐GMO lobby groups. Finally, the in‐depth study on Germany affirms that “closedness” was important for Cibus’ choices and reveals that technical information served as a venue‐internal factor that influenced the firm’s choices.     

The Political Viability of Carbon Pricing: Policy Design and Framing in British Columbia and California

The adoption of climate policies with visible, substantial costs for households is uncommon because of expected political backlash, but British Columbia's carbon tax and California's cap‐and‐trade program imposed such costs and still survived vigorous opposition. To explain these outcomes, this article tests hypotheses concerning policy design, framing, energy prices, and elections. It conducts universalizing and variation‐finding comparisons across three subcases in the two jurisdictions and uses primary sources to carry out process tracing involving mechanisms of public opinion and elite position‐taking. The article finds strong support for the timing of independent energy price changes, exogenous causes of election results, reducing the visibility of carbon pricing, and using public‐benefit justifications, as well as some support for making concessions to voters. By contrast, the effects of the use of revenue, industry exemptions/compensations, and making polluters pay are not uniform, because the effects of revenue use depend on how it is embedded in coalition building efforts and a middle path between exempting or compensating industry and burdening it appears to be more effective than pursuing just one or the other approach.     

清肾颗粒对肾纤维化大鼠P-selectin/PSGL-1的干预作用

目的 观察清肾颗粒对5/6肾切除肾纤维化模型大鼠肾组织P-选择素（P-selectin）/ P-选择素糖蛋白配体-1（P-selectin glycoprotein ligand 1,PSGL-1）表达的影响及其抗肾纤维化的作用机制。方法 将72只雄性SD大鼠随机分为正常组,模型组,清肾颗粒高、中、低剂量组,氯沙坦组,每组12只;除正常组外,剩余60只大鼠均按手术方法制备5/6肾切除肾纤维化模型,各组动物均从模型复制1周后开始灌胃给药,清肾颗粒各剂量组和氯沙坦组分别予以一定比例的清肾颗粒和氯沙坦水溶液灌胃,模型组和正常组均以等比例温水灌服。12周后处死大鼠,取残余肾组织用于检测P-selectin/PSGL-1蛋白及其mRNA的表达水平。结果 与正常组比较,模型组P-selectin、PSGL-1蛋白及其mRNA相对表达水平明显升高,差异均有统计学意义（P<0.05）;与模型组比较,清肾颗粒各剂量组和氯沙坦组P-selectin、PSGL-1蛋白及其mRNA表达水平降低,差异均有统计学意义（P<0.05）;与氯沙坦组比较,清肾颗粒高剂量组P-selectin、PSGL-1蛋白及其mRNA表达水平降低,差异均有统计学意义（P<0.05）;清肾颗粒各组之间比较,清肾颗粒高剂量组P-selectin、PSGL-1蛋白及其mRNA表达水平最低,差异有统计学意义（P<0.05）。结论 清肾颗粒能够降低5/6肾切除大鼠肾组织P-selectin及PSGL-1的表达,这可能是其抗肾纤维化的机制之一。     

鸡毒霉形体TM-1基因原核表达载体的构建及表达

对从含有鸡毒霉形体H3株TM 1基因的大肠埃希氏菌DH5α中提取的质粒,进行EcoRⅠ和SalⅠ双酶切,获得了大约为786bp的目的片段。将此片段与经EcoRⅠ和SalⅠ双酶切的线性原核表达载体pET 30a 1连接,转化宿主菌BL21(DE3),筛选阳性克隆。提取质粒,经酶切、PCR扩增和测序分析确证其插入正确,从而构建成了重组表达载体。阳性克隆用IPTG诱导表达,表达产物经SDS PAGE电泳分析,证明其分子质量约为29ku;Western blotting分析表明,该蛋白可被鸡毒霉形体阳性血清识别,具有生物学活性。     

口蹄疫病毒结构蛋白VP1基因的克隆及其在大肠埃希氏菌中的表达

利用RT PCR技术 ,用包容口蹄疫病毒完整VP1基因的引物从口蹄疫分离株 (China/99 2 )中扩增得到一约 75 0bp的DNA片段 ,克隆后 ,经对该片段的核苷酸序列进行测序和同源性比较 ,显示其与国外同源参考序列 (O1K/66)的同源性为 80 .44% ,与国内同型参考株 (HB/WH/99)的核苷酸序列的同源性达 99.0 6%。随后以重组质粒pGEM VP1为模板 ,用特异性表达引物扩增得到目的基因VP1 (65 0bp) ,对目的基因和表达载体 pGEX 4T 1分别以相同的限制性内切酶酶切后构建成重组表达载体 ,转化宿主菌BL2 1 (DE3 )后得到重组质粒pGEX VP1 ,经酶切及PCR鉴定筛选出阳性克隆 ,测序证明目的基因正确插入到表达载体。用IPTG诱导VP1基因的表达 ,收集不同时间的菌液进行SDS PAGE电泳、Western blotting分析检测。结果表明 ,结构蛋白VP1基因可在大肠埃希氏菌中表达 ,表达产物的分子量约为 5 3ku ,并能被口蹄疫阳性血清所识别。经薄层扫描分析 ,表达蛋白约占菌体蛋白总量的 2 0 .0 0 %。证明口蹄疫病毒结构蛋白VP1基因可在大肠埃希氏菌中高效表达 ,且表达产物有一定的生物学活性