Core–shell ZIFs wrapped CuO hybrid materials (CuO@ZIF-67(Co)) were designed, synthesized, characterized, and employed as peroxymonosulfate (PMS) activators to degrade methylene blue (MB). It demonstrated outstanding catalytic activity on account of the unique structure and the synergistic effect between CuO cores and ZIF-67(Co) shells, resulting in complete degradation of MB (10 mg/L) in 1 min. Reactive oxygen species (ROSs) research showed that both SO4 − and OH were responsible for the removal of MB. The synergistic activation mechanisms in the CuO@ZIF-67(Co)/PMS system were investigated, which mainly involved the effective electron transfer of CuO and ZIF-67(Co) for accelerating the cycle of CuII/ CuI and CoIII/ CoII. This study broadens the application of MOF-derived materials for wastewater treatment.

The interaction between might and right is an important topic throughout the development of international relations. Various ideologies and corresponding practices have been put forward by realism, liberalism, constructivism, and international socialism under both Western international relations theories and China’s traditional Wang Dao (王道, “the kingly way” or “benevolent government”), and Ba Dao (霸道, “the hegemonic way” or “rule by force”). In international relations, the rule of law - a phenomenon that has emerged and is continuously developing - is conducive to restraining power politics and promoting right, which is one of the goals of international relations development. China has always opposed hegemony and power politics; it firmly supports a modern system of international law based on the purposes and principles of the UN Charter and aims to build a new international political and economic order with peace, justice, and stability.

The porcine zygotic genome activation occurs along with global epigenetic remolding at the 4-cell stage. The histone acetylation, regulating DNA transcription, replication and so on, requires adequate acetyl-CoA. Acetyl-CoA produced by translocated pyruvate dehydrogenase in the nucleus of mammalian cells has been reported, which is commonly considered locating in the mitochondria. To find out whether the nuclear pyruvate dehydrogenase regulating the histone acetylation by controlling generation of acetyl-CoA, a multiple sgRNAs-CRISPR/Cas9 targeting strategy was employed to generate a pyruvate dehydrogenase E1 alpha1 (Pdha1) knockout (KO) parthenogenetic embryo model. Results showed that the targeting efficiency of Pdha1 reached more than 90%. Hence, this model was used in the subsequent experiments. Furthermore, a translocation of Pdha1 during zygotic genome activation was found by immunofluorescent staining and was significantly inhibited by Pdha1 KO. Meanwhile, the 8-cell stage embryo rate significantly decreased after 72 h (24.19% vs 12.53%, control vs Pdha1 KO), indicating a 4-cell arrest. In addition, the nuclear histone acetylation level significantly decreased when Pdha1 was KO. To determine whether the zygotic genome transcription was affected, the qPCR was performed and showed that the mRNA level of Eif1A, Acly, Sqle and Pdha1 all dropped significantly in the Pdha1 KO group compared to the control. In conclusion, the translocated Pdha1 generates acetyl-CoA for histone acetylation inside the nucleus of porcine embryos, which promotes the zygotic genome activation of porcine embryos.

중국 해상법 제17조에 따르면 선박에 저당권이 설정된 이후 저당권 설정자는 저당권자의 동의 없이 선박을 양도할 수 없다. 이 규정은 중국 재산법 제191조 2항과 근본적으로 유사하며, 재산법에 따라 저당권 설정자는 양수인이 채무자 의 채무를 지불하고 저당권을 해제한 경우를 제외하고 저당권자의 동의 없이 저당물건을 양도할 수 없다. 그러나 중국 보안법 제49조 1항에서는 만약 저당 권 설정자가 저당 물건을 양도하면 저당권 설정자는 저당권자에게 통보하고 양 수인에게 저당사실을 알려줘야 한다고 명시하고 있다. 만약 이를 위반할 시에 는 양수인은 이를 무효로 할 수 있다. 따라서 재산법이 보안법상 규칙을 수정했 다고 볼 수 있다. 이와 관련하여 일반적으로 저당권자는 그가 저당권에 대한 집행 을 진행할 때까지 저당권자에 대한 통보 없이 저당물건이 양도된 사실을 알 수 없 는 부분이 있다. 이 논문은 해상법 제17조에 뿐만 아니라 재산법 제191조 2항 및 민 법상 근본원칙에 대해서 좀 더 살펴보고자 한다.

26 wild accessions and 2 cultivars of whip grass (Hemarthria compress a (L. f.) R. Br.), which collected in the fields of Sichuan Agricultural University (SAU), were used to study on their ploidy level and reproductive characteristics. The results showed that there were 4 tetraploids (14.3%), H028, H029, H052, H053, chromosome numbers were 2n=4x=36, and 24 hexaploids (85.7%), 2n=6x=54. There was no significant correlation between geographical distribution and ploidy level in this research. From 2006 to 2008, hexaploids set few seeds, but all of the tetraploids set some seeds more or less. H052 had the highest seed set (11.22%). The tetraploids had potential for seed production, especially H052, it should be possible to obtain hybrids by cross-pollination in the future.

TiC-TiB2-SiC system was a ternary eutectic, whose eutectic composition was 34TiC-22TiB2-44SiC (mol%). TiC-TiB2-SiC ternary eutectic composite were synthesized by a floating zone method using TiC, TiB2 and SiC powders as starting materials. The TiC-TiB2-SiC eutectic composite showed a lamellar texture. TiC(022), TiB2(010) and SiC(111) of the eutectic composite were perpendicular to the growth direction. TiC-TiB2-SiC ternary eutectic composite had specific relationship among the crystal planes: TiC[011]//TiB2[010]//SiC[112], TiC(200)//TiB2(001)//SiC( 402 ) and TiC( 111 )//TiB2(101 )//SiC( 220 ).

The efficiency of port operations is an important indicator of port development. Moreover, there is excess handling capacity in Chinese ports, which results in a slower speed of development. Under the detrimental environment of the international shipping market, it is necessary to improve the operation efficiency of ports for long-term development. This paper provides an assessment of the competitiveness of Chinese seaport companies using the Boston Consulting Group’s matrix, and efficiency measurements using a data envelopment analysis and the Malmquist method. This analysis showed that highly efficient companies reformed their development strategies, which should be a solution considered by less efficient companies, such as Shenzhen Yan Tian Port Holdings Co., Ltd.. Although, having high throughput should be reformed in the investment structure. This research will assist port companies in gaining effective operating experience, and governments in establishing strategic planning to enhance the efficiency of port development.