Transcriptome profile of one-month-old lambs' granulosa cells after superstimulation

Wu, Yangsheng,Lin, Jiapeng,Li, Xiaolin,Han, Bing,Wang, Liqin,Liu, Mingjun,Huang, Juncheng Asian Australasian Association of Animal Productio 2017 Animal Bioscience Vol.30 No.1

Objective: Superstimulatory treatment of one-month-old lambs can achieve synchronous development of numerous growing follicles. However, these growing follicles cannot complete maturation and ovulation. Oocyte maturation and competence are acquired during follicular development, in which granulosa cells play an essential role. Methods: In this study, we applied RNA sequencing to analyze and compare gene expression between prepubertal and adult superstimulated follicle granulosa cells in sheep. Results: There were more than 300 genes that significantly differed in expression. Among these differently expressed genes, many extracellular matrix genes (EGF containing Fibulin Like Extracellular Matrix Protein 1, pentraxin 3, adrenomedullin, and osteopontin) were significantly down-regulated in the superstimulated follicles. Ingenuity pathway and gene ontology analyses revealed that processes of axonal guidance, cell proliferation and DNA replication were expressed at higher levels in the prepubertal follicles. Epidermal growth factor, T-Box protein 2 and beta-estradiol upstream regulator were predicted to be active in prepubertal follicles. By comparison, tumor protein P53 and let-7 were most active in adult follicles. Conclusion: These results may contribute to a better understanding of the mechanisms governing the development of granulosa cells in the growing follicle in prepubertal sheep.

Micro gadolinium oxide dispersed flexible composites developed for the shielding of thermal neutron/gamma rays

Wang Boyu,Guo Xiaolin,Yuan Lin,Fang Qinglong,Wang Xiaojuan,Qiu Tianyi,Lai Caifeng,Wang Qi,Liu Yang 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.5

In this study, a series of flexible neutron/gamma shielding composites are fabricated through the doping of Gd2O3 into the matrix of SEBS with (MGd2O3: MSEBS) % from 5% to 100%. Neutron transmittance test shows an exponential attenuation with the increase of areal density of Gd, in which the transmittance T ranges from 59.1440% to 35.3026%, with standard deviation less than 2.2743%, mass attenuation coefficient mm from 0.3194 cm2 /g to 0.4999 cm2 /g, and half value layer-HVL value from 2.4530 mm to 1.1313 mm. Shielding efficiency of the Gd2O3/SEBS composites is basically improved in comparison with that of B4C/SEBS. The transmittance T, mass/linear attenuation coefficient mm and m, HVL and effective atomic number Zeff for the shielding of g rays (39 keV, 59 keV and 122 keV) are measured and calculated with XCOM as well as MCX programs. Finally, plots of the three dimensional relationships between transmittance, doping amount and thickness are provided to the guidance for engineering shielding design. In summary, the Gd2O3/SEBS composite is proved to be an effective flexible neutron/low energy g rays shielding material, which could be of potential applications in the field of nuclear technology and nuclear engineering.

Cluster-Based Polarized Spectrum Sharing in Channels with Polarization Mode Dispersion

Dongming Li,Zhimin Zeng,Caili Guo,Xiaolin Lin 한국전자통신연구원 2014 ETRI Journal Vol.36 No.3

Polarized spectrum sharing (PSS) exploits the spectrumopportunities in a polarized domain. However, when it comesto wideband environments PSS is impaired by the frequencydependentpolarization mode dispersion (PMD); thus, theeffective throughput of PSS drops. To combat the PMD effect,this work proposes a cluster-based PSS approach to enablePSS on a narrower frequency span. Simulation results showthat the effective throughput of PSS on cluster basisoutperforms that of PSS on bandwidth and subcarrier basis.

Current efforts and status of recycling technology development of electric vehicle battery in China

( Xiao Lin ),( Gangfeng Liu ),( Xue Wang ) 한국폐기물자원순환학회 2022 ISSE 초록집 Vol.2022 No.-

With the proposed goal of Carbon Neutrality, electric vehicles and other new energy industries are developing rapidly, the demand for lithium-ion batteries is increasing, which will certainly lead to a wave of scrapping in the future. On the one hand, the spent lithium-ion battery is flammable and explosive, and the organic toxic components contained requires harmless treatment; On the other hand, spent lithium-ion batteries have the property of resources e.g., Nickel, Cobalt, Manganese, Lithium and other valuable components. Therefore, the recycling of spent lithium-ion batteries can not only protect the environment, but also alleviate the global strategic metal resource tension and promote the healthy and sustainable development of new energy industry, which has become a hot topic in the global research. This article provides an overview of the lithium-ion battery recycling market, especially in China. Then we will share our research on the whole process recovery of lithium batteries, including the pre-treatment of spent Lithium-ion to obtain black powder that meets the requirements of the subsequent process, then the traditional hydrometallurgical recycling process for valuable metals in the black powder and ultra-short process developed by Botree Cycling will be introduced and compared. At last, the latest study on the life-cycle carbon footprint assessment for Lithium-ion batteries including the end-of-life stage will be mentioned.

글로벌 디지털무역의 발전과 영향요인 분석

( Xiao Lin ),이혁구 ( Lee Hyuk Ku ) 한중사회과학학회 2021 한중사회과학연구 Vol.19 No.4

본 논문은 국제협력기구의 통계자료를 이용하여, 50개 국가의 디지털 서비스 무역에 영향을 미치는 요인에 대해 실증분석을 하였으며, 이를 통해 중국 서비스 무역 발전에 대해 정책적인 시사점을 제시하였다. 실증분석 결과, 수출국의 경제규모는 일정 정도 수출을 촉진하지만 통계적으로는 의미가 없는 것으로 나타났으며, 수입국의 경제규모는 수출에 긍정적인 영향을 미치며 통계적으로 의미가 있는 것으로 나타났다. 양국 간 지리적 거리가 멀수록 디지털 서비스 무역 수출이 감소했으며, 동일 언어를 사용하는 국가일수록 커뮤니케이션 비용이 낮아져 수출이 증가한 것으로 나타났다. 한편, 동일 통화여부는 수출에 영향을 미치지 않는 것으로 나타났다. 또한, 수출입 국가의 디지털 서비스 무역 장벽은 수출에 부정적 영향을 미치는 것으로 나타났다. 수입국과 수출국을 비교해보면, 수입국의 디지털 서비스 무역 장벽의 영향이 더 큰 것으로 나타났다. 이는 디지털 서비스 무역 장벽이 높을수록 디지털 서비스 무역 자유화 수준을 낮추어 수출이 감소하기 때문인 것으로 풀이된다. 본 연구를 통해 중국의 디지털 무역발전에 대한 시사점은 다음과 같다. 첫째, 세계 각국의 디지털 서비스 무역 장벽에 대처할 수 있는 조기경보시스템 구축이 필요하다. 둘째, 디지털 서비스 산업 발전을 위한 환경을 개선하기 위해 디지털 서비스 산업 시스템을 수립해야 한다. 또한 이와 관련된 지식재산권 보호제도를 개선하고 디지털 서비스 기업의 해외진출을 장려하여 국제 분업에 적극적으로 참여할 필요가 있다. 셋째, 데이터의 시장화, 데이터의 자산화 관련 정책 및 법규, 데이터 소유권 등 제도적 장치를 조속히 마련해야 한다. This article uses the statistical data of the International Cooperation Organization to carry out an empirical analysis of the factors affecting digital service trade in 50 countries, and proposes policy implications for the development of China’s service trade. The results of empirical analysis found that the economic scale of export countries promoted exports to a certain extent, but it is not statistically significant. The economic scale of the import country has a positive impact on exports and is statistically significant. The farther the geographical distance between the two countries is, the lower the export of digital service trade will be. The lower communication costs between countries with a common language will lead to an increase in exports. On the other hand, it is found that the existence of the same currency does not affect exports. In addition, it is found that barriers to trade in digital services in import and export countries have a negative impact on export. The impact of barriers to trade in digital services is greater in import countries compared to export countries. This is because the higher the digital services trade barrier, the lower the level of digital services trade liberalization, which inevitably leads to a decrease in trade. The implications of this study on the development of digital trade in China are as follows. First, it is necessary to establish an early warning system that can cope with digital service trade barriers in countries around the world. Second, it is necessary to establish a digital service industry system to improve the environment for the development of the digital service industry. In addition, it is necessary to actively participate in the international division of labor by improving the related intellectual property protection system and encouraging overseas expansion of digital service companies. Third, institutional devices such as data marketization, data assetization-related policies and laws, and data property rights should be prepared as soon as possible.

Isolation and Characterization of 2,4-D Butyl Ester Degrading <i>Acinetobacter</i> sp. ZX02 from a Chinese Ginger Cultivated Soil

Xiao, Lin,Jia, Hai-fei,Jeong, In-Hong,Ahn, Young-Joon,Zhu, Yong-Zhe American Chemical Society, Books and Journals Divi 2017 Journal of agricultural and food chemistry Vol.65 No.34

<P>Strain ZX02 was isolated from Chinese ginger cultivated soil contaminated with various pesticides, which could utilize 2,4-dichlorophenoxyacetic acid butyl ester (2,4-D butyl ester) as the sole carbon source. On the basis of the sequence analysis of 16S rRNA gene as well as the morphological, biochemical, and physiological characteristics of strain ZX02, the organism belonged to Gram-negative bacterium and was identified as Acinetobacter sp. ZX02. The strain ZX02 showed a remarkable performance in 2,4-D butyl ester degradation (100% removal in <96 h) in pure culture. Strain ZX02 was sensitive to tetracycline and resistant to amoxicillin and chloramphenicol in an antibiotic sensitivity test. The curing study indicates that the gene for degradation of 2,4-D butyl ester was encoded on a single plasmid of 23 kb. The gene encoding resistance to polymixin B sulfate was also located on this plasmid. On the basis of its greater biodegradation activity, this bacterium is a potential candidate as a bioremediation agent in soils contaminated with 2,4-D butyl ester.</P>