President Trump has, for the first time in the US trade history, aggressively redefined the US trade policy as a supporting actor in the US national security policy. His presidential actions have involved a broad array of legislation, such as trade sanctions and export controls. Most astonishing is that President Trump has imposed trade restrictions by relying upon unilateral findings of national security risks or the existence of national emergencies. We are now at a point where federal courts in the US have been asked to review the validity of presidential trade actions, specifically the central legality of the broad delegation of congressional trade authority over the last 75 years. I predict that the federal courts will uphold the separation of powers in the face of the outrageous and unprecedented onslaught of presidential tariff and trade actions by a president relying upon dubious claims of national security and national emergency.

We examined the efficacy of various pretreatment solutions on the postharvest longevity and quality of ‘Hessa’ cut spray roses (Rosa hybrida L.) to develop an inexpensive and innocuous preservative solution for the cut flower industry. Cut flowers were pretreated with 4 preservatives for 10 hours: Scutellaria baicalensis Georgi extract (SC) at 300 μL·L-1, hydrosol (H), S. baicalensis Georgi extract 300 μL·L-1 + sucrose 1% (SC + Suc), and H + sucrose 1% (H + Suc). The results showed that pretreatment with all the solutions except H + Suc improved the postharvest longevity and extended the longevity of cut rose flowers. We found that 300 μL·L-1 of SC was the most effective preservative, which significantly prolonged the postharvest longevity in cut flowers from 9.7 days (control) to 14.1 days. The beneficial effects of 300 μL·L-1 SC pretreatment were associated with inhibition of bacterial accumulation at the basal portion of cut stems, enhanced water uptake, improved fresh weight, and a positive water balance. SC also effectively maintained chlorophyll fluorescence ratios in the leaves and reduced water stress in cut roses. The results demonstrate the potential of SC as an alternative preservative in the cut rose flower industry.

국가가 자주권을 행사하는 것은 전략문화와 강한 상관관계가 있지만 국가의 전략문화의 분류에 대해서는 학자마다 견해가 다르다. 중국 서부의 가장 중요한 인접국가 중 하나인 파키스탄은 중국의 든든한 파트너로서 파키스탄의 전략문화를 이해하는 것은 파키스탄의 국가 정책과 국가가 자주권을 행사하는 행위를 이해하는데 도움이 될 뿐만 아니라 중국과 파키스탄 양국의 협력관계를 심화시키는데도 도움이 된다. 저자는 지리, 사회, 경제, 문화, 역사, 군사 등의 관점에서 볼 때 파키스탄의 전략적 문화 형성의 메커니즘은 주로 지정학적 환경, 생산방식, 생활방식, 문화적 전통, 역사적 경험과 대외 관계 등 네 가지 요인의 영향을 받는다. 분석 결과로 파키스탄의 전략 문화는 이슬람에 의해 형성되어 왔고, 대외 지향적인 전략 문화로 분류될 수 있으며 국가가 자주권을 행사하는 거도 이슬람적인 색채가 강하다.

Motile aeromonad septicaemia (MAS) mostly caused by Aeromonas hydrophila is a disease of high economic impact in freshwater organism. This study examined the seroconversion and seroprotection of formalinised local isolates of Aeromonas hydrophila in the Clarias gariepinus administered via different routes. Highly virulent Aeromonas hydrophila was treated with 40v/v formalin for 24 h. Bacterin was suspended to 0.5 McFarland standard and utilized to immunize Clarias gariepinus of 400±20 g in three groups with 50 samples each via three routes of administration. Antibody measurement taken at regular intervals before and after vaccination revealed a significantly higher antibody values in all routes compared to the control and difference was noticed at all intervals. Relative percent survival was 71.43, 62.86 and 57.14 intraperitoneal, intramuscular and immersion routes, respectively. Correlation analysis established a strong and direct relationship in the antibody generation through route of administration and efficacy of vaccine. This local vaccine was able to confer a high degree of immunity on Clarias gariepinus and can therefore be used to vaccinate against MAS.

한국과 중앙아시아 국가들 간의 외교 관계는 1992년에 성공적으로 수립되었는데, 이것은 이미 지금까지 27 년 동안 발전해 왔다. 계속되는 양국 관계의 심화와 함께 한국과 중앙아시아 국가들 간의 경제 및 무역 관계가 강화되었고, 양국간 교류 빈도도 현저히 증가했다. 아시아에서 네 번째로 큰 경제 대국인 한국은 중앙아시아에서의 경제 및 외교 전략에서 더 큰 잠재력을 보이고 있다. 특히 한국은 2013년 '유라시아 이니셔티브'와 2017년 '신북정책'을 제안해 중앙아시아 국가들이 중요한 파트너로 평가받았고, 보다 적극적인 경제협력 전략이 추진될 것으로 보인다. 따라서 향후 한국과 중앙아시아 국가 간 경제협력이 뚜렷하게 발전할 것으로 보는 것이 타당하다.

This article discusses American Institute for International Steel v. the United States, which is pending in the little-known United States Court of International Trade in New York. It involves an attempt to declare that the US legislation delegating authority to the president to impose trade restrictions is an unconstitutional delegation of legislative authority. A loss would legally curtail the president’s discretionary power to use national security as a reason to impose punitive measures against trading partners. The article identifies legal trends, where this case fits into the trade policy debates, and why it is so important. The article concludes that domestic US litigation in 2019 may well have a tremendous impact on US law and the global trading system. Many in the domestic and international trading communities (as well as those in the foreign policy and national security communities) are waiting for the results of this little-known steel litigation.

This study examined the overdose toxicity of Super-Neophensan, containing florfenicol and acetaminophen, upon pigs. SNP-3.0 (n=10) was administered at the dosage level of 3 kg/ton feed for 7 consecutive days, which is 3 times the recommended dose based on the guidelines of the manufacturer, and the control group (CON) (n=10) was administered the normal diet without the drug. The body weight, weight gain and feed efficiency in SNP-3.0 treated with the drug for 14 days post-administration showed no significant differences compared with those in CON. In hematological and blood biochemical analyses, all parameters were not affected by over-dosage of the drug. In the same way, there were no significant differences between SNP-3.0 and CON on markers for liver and kidney functions. As no adverse effects were observed with the drug in an overdose oral toxicity test, this study suggests that the drug was identified as a safe agent in pigs administered with three times the recommended dose.

A study of the tissue depletion of florfenicol (FFC) administered orally to pigs at a dose of 0.05 kg/ton feed for 7 days was performed. Sixteen healthy cross swine were administered with FFC. Four treated animals were arbitrarily selected to be sacrificed 1, 3 and 5 days after the end of treatment. FFC residue concentrations in muscle, liver, kidney, and fat were determined using high-performance liquid chromatography (HPLC) with ultraviolet photometric detector at 230 nm. The correlation coefficient (R2) of the calibration curve for florfenicol amine (FFCa) was > 0.997 and the limits of detection and quantification were 0.012 and 0.040 μg/mL, respectively. Recovery rates in swine edible tissues ranged from 79.1 to 93.5%. In the FFC-treated group, FFC residues at 3 days post-treatment were below the maximum residue limits (MRLs) in muscle, kidney and fat, and those at 5 days post-administration were below the MRLs in all edible tissues. These results suggest that the withdrawal period of FFC after the drug treatment might be 5 days, which is a sufficient amount of time for reduction of the FFC residues below the MRLs in all edible tissues.

Bullying among secondary school students has become one of the most disturbing issues in Nigeria. A variety of bullying behaviour abounds with their attendant negative consequences. This study investigated students’ attitudes towards bullying, environments in which bullying takes place and the extent of their involvement in bullying behaviours. The sample comprised 592 senior secondary students in Owerri metropolis who completed the Attitude to Bullying Rating Scale (ABRS), Checklist on Environments of Bullying (CEB), and Involvement in Bullying Rating Scale (IBRS). The findings indicate that a majority of students (67.57%) exhibited an inappropriate attitude toward bullying. Bullying was found to be prevalent among senior secondary school students in Owerri. Of the total number of students, 57.43% were involved as victims, 68.92% were involved as bullies, while 74.66% were involved as bystanders On the nature of bullying, social bullying ranked highest (82.94%), followed by physical bullying (81.1%) and verbal bullying (64%). With regards to the environments where bullying occurs, the study found that bullying can take place anywhere in the school and outside the school, however, the prominent places include the classroom (without the teacher), school play grounds, corridors, toilet ends, school canteens and on the way home. While a greater number of the male students were involved in physical bullying, more females were involved in verbal bullying. It is recommended that anti-bullying campaign be mounted in the secondary schools.

Cryopreservation of bovine embryos is used to efficiently implant surrogate mothers. It has been widely accepted that high lipid content in the oocyte interrupts its survival during freeze-thaw cycles. Serum component in the culture medium is thought to increase the embryo`s lipid contents. Conversely, L-carnitine stimulates lipid metabolism by transporting long chain fatty acids into the mitochondria. Objective of this study was to analyze the effect of L-carnitine supplementation in IVM medium and defined IVC medium on the development, lipid contents and the cryosurvival of bovine IVF embryos. 0.0, 1.5, 3.0 and 6.0 mM L-carnitine was supplemented in IVM medium, respectively (IVM-LC 0.0, LC 1.5, LC 3.0 and LC 6.0). Development rate from the 2cell to the morula stages was higher in IVM-LC 3.0 groups than those of IVM-LC 6.0 (p<0.05). But there were no significant differences among the other groups in the blastocyst rates and lipid content results. When 0.0, 1.5, 3.0 and 6.0 mM L-carnitine were supplemented in IVC medium (IVC-LC 0.0, LC 1.5, LC 3.0 and LC 6.0), development competence was not significantly different between those embryos. Lipid contents of embryos treated L-carnitine (IVC-LC 1.5, 3.0 and 6.0) were significantly lower than embryos of non-treated group. L-carnitine was supplemented 0.0, 1.5, 3.0, 6.0 mM during IVM and 3.0 mM during IVC (LC 0.0 - 3.0, LC 1.5 – 3.0, LC 3.0 – 3.0, LC 6.0 – 3.0) and cryosurvival of blastocysts confirmed after freezing-thawing. There were no significant differences on development, but LC 3.0 – 3.0 was significantly lower lipid contents than other groups. And LC 3.0 – 3.0 had better survival rates and hatched rates of blastocysts than LC 0.0 – 0.0. In conclusion, supplementation of L-carnitine in defined IVC medium decreases lipid contents. And L-carnitine supplementation improves cryosurvival and developmental ability of bovine IVF embryos.