중국에서의 이산화탄소 포집・저장 및 활용에 관한 행정법적 소고 - 법⋅정책적 현황을 바탕으로 -

Pengyuan Ji,임단비 중앙대학교 법학연구원 2023 法學論文集 Vol.47 No.1

근년 들어 전세계적으로 기후변화로 인한 이상 현상이 빈번하게 일어나 인류사회가 많은 피해를 입고 있다. 이산화탄소의 과다한 배출은 기후변화의 원인 중 하나로 지적되고 있다. 이에 따라 이산화탄소 배출량을 가급적 억제하고, 배출되더라도 이산화탄소를 대기중에 흩어지지 않기 위하여 “완화책”으로서 CCUS(이산화탄소의 포집・저장 및 활용)사업이 주목받고 있다. CCUS사업은 이산화탄소의 흡수원으로서 이산화탄소 과다 배출로 인한 악영향을 저감하는 역할을 한다. 현재 세계 여러 나라에서는 CCUS사업을 위한 법적・정책적 방안을 마련하고 있다. 하지만 CCUS사업 그 자체에 수반하는 과학적 불확실성, 사업 진행의 장기성, 사회적 수용성 문제 등 일련의 문제로 인하여 관련 법제도 정비에 많은 어려움을 겪고 있다. 중국에서도 중앙정부 차원에서부터 지방까지 CCUS사업의 촉진을 위한 법적・정책적 제도상의 뒷받침이 점차 정비되고 있다. 다만 현재까지 중국에서의 CCUS사업은 정책적 성격이 강한 것으로 보인다. 중국은 「14차 5개년 규획(2021~2025)」과 「에너지생산 및 소비혁명전략(2016~2030)」에서 국가차원의 거시적 계획에 따른 CCUS 시범 프로젝트로의 전개에 관한 규정을 두고 있으며, 현재 중국의 입법체계상 CCUS사업의 규제에 관한 ‘법률’차원의 입법례가 존재하지 않는다. 단지 국무원 내부 부서가 제정한 ‘부문규장’으로 법적 규제 또는 지원을 규정하고 있는 것이 현실이다. 요컨대 CCUS사업과 관련하여 정책적 규제 외에 법적 규제수단이 아직 충분하지 않으며, 향후 CCUS사업 법제화를 위하여 CCUS사업에 관련되는 행정허가의 조건・시기・사후관리 측면에서의 검토 그리고 CCUS사업의 기술상・환경상 관리기준의 정비가 가장 시급한 과제라 할 수 있다. CCUS사업과 관련하여 현재 중국행정법 중의 여러 실정법 체계에는 미비한 부분이 많이 있으며, 지방정부차원에서도 CCUS사업의 촉진을 내용으로 하는 지방성 규정은 1건에 그친다. 중국 CCUS사업의 법제화를 위해 관련 입법과 연동되고 통일적 법규범의 등장이 있어야 한다는 요청이 있다. 본 고에서는 중국 CCUS사업의 법적 규제・지원의 빈약한 현실을 제시한 후에 CCUS사업에 대한 규제의 어려움 및 한계점을 밝히고, 중국법상 해결할 수 있는 대책 방안을 제안하고자 한다. 본 고에서 제시한 중국 현행 법체계의 부족한 부분 외에도 꼭 해결해야 할 환경행정법 이론상의 해석가능성도 남아 있다. 즉, 환경리스크의 존재 및 공사협동 모델의 요청이 있기 때문에 해당 이론과 CCUS사업 사이에 어떤 연결을 맺는지가 검토하여야 하는 내용이다. 현재 우리가 살고 있는 ‘환경리스크’사회에서는 사전적으로 미래 발생가능한 리스크에 대하여 법률합치적(비례적) 대응이 어떻게 진행되는지에 관하여, 국가(행정)만으로 완전히 대응하기가 힘들다. 이러한 정부의 실패와 시장의 실패가 동시에 나타나는 환경리스크 사회에서 CCUS사업을 효율적으로 대응하기 위하여 이른바 ‘공사협동’ 패러다임로 전환되어야 한다. 이러한 환경행정법학상의 흐름과 중국 현행법 체계의 미비점을 종합적으로 보면, 법적연구는 물론, 법정책적 연구의 접근도 필요하다. 그리고 중요한 것은 CCUS사업의 법적 성격에 대한 검토에 기초하여 행정허가제도, 사전・사후 관리제도, 민간자본의 진입을 위한 제도, 환경영향평가제도, 주민참여제도 또는 지방입법권의 확 ...

Multi-Phase Sliding Mode Control Power Converter for Electrical Vehicle Applications

Woonki Na,Pengyuan Chen,Hoon Lee 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

In this paper, a multi-phase sliding mode controller is presented for an electric vehicle system having a fuel cell power source and energy storage systems such as battery and ultracapacitor. Details of the multi-dimensional sliding mode control for this multi-input power converter are designed with a dynamic Proton Exchange Membrane Fuel Cell(PEMFC), Li-Ion battery and Ultracapacitor models. The proposed controller is verified and validated throughout the simulation and the small scaled DSP test-bed in terms of the ripple reduction of the current on the DC link under various conditions.

A New Calculation Method for Tunneling-Caused Stratum Settlement

Junbao Wang,Pengyuan Zhou,Zhanping Song,Shihao Li,Qiang Zhang 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.6

To improve the prediction accuracy for the stratum settlement induced by tunnels and obtain a theoretical method for determining the influence radius of settlement, a new empirical formula for the surface settlement curve is proposed in this study, and the slice method is introduced into the calculation of the influence radius of settlement. It is assumed that the disturbance boundary of the tunnel is a circular arc surface, the disturbed soil is divided into multiple slices, and the sliding force and resistance on the circular arc are obtained through a stress analysis of the slices. An arc with the same values of the sliding force and resistance can be determined as the actual disturbance boundary of the overlying strata as formed by the subsurface tunneling. On this basis, the influence radius of settlement and maximum settlement at different depths can be determined, and the settlement curve can be depicted by substituting the influence radius and maximum settlement into the expression of the settlement curve. The rationality of the proposed method is verified based on four sets of measured data. The surface settlement curves and the settlements at different depths on the center line of the tunnel obtained by the new method are generally consistent with the measured data.

The mechanism of inhibitive effect on hydrogen permeation of X70 steel by lanthanum microalloying: Enhanced kinetics of desorption

Zhengyi Xu,Pengyuan Zhang,Bo Zhang,Bing Lei,Zhiyuan Feng,Junyi Wang,Yawei Shao,Guozhe Meng,Yanqiu Wang,Fuhui Wang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.122 No.-

In this work, electrochemical hydrogen permeation tests were carried out to obtain the steady-statehydrogen permeation current of X70 pipeline steel in acid environment and alkaline electrolyte withapplied cathodic overpotentials simulating the service conditions of pipelines. It is shown that Lamicroalloyingcan efficiently reduce the steady-state hydrogen permeation current density while maintainingthe same mechanical performance. The experimental permeation data were fitted with Iyer-Pickering-Zamanzadeh (IPZ) and surface effect model to analyze the inhibitive mechanism on hydrogenpermeation, and the results depicted that La element on the material surface greatly facilitates the desorptionprocess of hydrogen atoms. In addition, the calculated hydrogen diffusion coefficient was foundsmaller after La microalloyed, which can be ascribed to the larger hydrogen trap density. It is suggestedthat La-microalloying can mitigate hydrogen damage of X70 pipeline steel in both acidic environment orunder cathodic protection.

Optimized Implementation of a DC-DC Power Converter Modeling and Control Strategy for Efficient Operation of a Photovoltaic Application

Woonki Na,Pengyuan Chen,Jonghoon Kim 제어로봇시스템학회 2016 제어로봇시스템학회 국제학술대회 논문집 Vol.2016 No.10

This paper describes a small signal model, voltage controller design and its implementation for a DC/DC converter in a PV(Photovoltaic) system. The detailed small signal model is proposed to design a voltage controller for the system. Based on the proposed small signal model, a voltage controller for the PV system is designed and tested with different internal resistances of the PV system. The designed voltage controller is validated through a DSP(Digital Signal Processor) based prototype PV system.

Construction of Finite Element Segmentation Algorithm Model of Image

Li Han,Pengyuan Wang 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.11

Grading the fruit by using machine vision system, it is hoped by the computer to recognize and understand the image automatically, in order to achieve this objective, the key step is to capture the suitable fruit images so that fruit image information can be effectively decomposed. Therefore, the final result of decomposition is to get some of the characteristics of each image with its own motifs, such as borders, shape and so on. By using these primitives, you can match a certain pattern, so as to determine the quality of the fruit. In this paper, it takes the overview of the finite element segmentation as a starting point, combined with the interpretation of the numerical algorithm and FCM algorithm functional convergence of the sequence, relying on Mumford-Shah function model to investigate the generation of fruit image finite element model.

Stress-related energy dissipation and damping model of concrete considering moisture content

Liu, Baodong,Zhang, Pengyuan,Lyu, Wenjuan Techno-Press 2022 Advances in concrete construction Vol.13 No.6

Although the influence of moisture content on the mechanical properties of concrete has been studied for a long time, research related to its influence on the damping and energy dissipation property of concrete structure is still very limited. In this paper, the relationship between damping property and moisture content of concrete using cyclic uniaxial compression is firstly presented, and the mechanism of the influence of moisture content on concrete damping and energy dissipation capacity is analyzed. Based on the experimental research, moisture-related damping and energy dissipation model is proposed. Results show that the dissipated energy of concrete and loss factor increase as the moisture content increasing. The energy dissipation coefficient reflecting the influence of stress level of concrete under cyclic load, decreases first and then increases as the moisture content increasing. The mechanism of moisture-related energy dissipation behavior can be divided into the reactive force of water, the development of the internal micro cracks and the pore water pressure. Finally, the proposed moisture-related damping and energy dissipation model are verified.

Combination of 18F-Fluorodeoxyglucose PET/CT Radiomics and Clinical Features for Predicting Epidermal Growth Factor Receptor Mutations in Lung Adenocarcinoma

Li Shen,Li Yadi,Zhao Min,Wang Pengyuan,Xin Jun 대한영상의학회 2022 Korean Journal of Radiology Vol.23 No.9

Objective: To identify epidermal growth factor receptor (EGFR) mutations in lung adenocarcinoma based on 18F-fluorodeoxyglucose (FDG) PET/CT radiomics and clinical features and to distinguish EGFR exon 19 deletion (19 del) and exon 21 L858R missense (21 L858R) mutations using FDG PET/CT radiomics. Materials and Methods: We retrospectively analyzed 179 patients with lung adenocarcinoma. They were randomly assigned to training (n = 125) and testing (n = 54) cohorts in a 7:3 ratio. A total of 2632 radiomics features were extracted from the tumor region of interest from the PET (1316) and CT (1316) images. Six PET/CT radiomics features that remained after the feature selection step were used to calculate the radiomics model score (rad-score). Subsequently, a combined clinical and radiomics model was constructed based on sex, smoking history, tumor diameter, and rad-score. The performance of the combined model in identifying EGFR mutations was assessed using a receiver operating characteristic (ROC) curve. Furthermore, in a subsample of 99 patients, a PET/CT radiomics model for distinguishing 19 del and 21 L858R EGFR mutational subtypes was established, and its performance was evaluated. Results: The area under the ROC curve (AUROC) and accuracy of the combined clinical and PET/CT radiomics models were 0.882 and 81.6%, respectively, in the training cohort and 0.837 and 74.1%, respectively, in the testing cohort. The AUROC and accuracy of the radiomics model for distinguishing between 19 del and 21 L858R EGFR mutational subtypes were 0.708 and 66.7%, respectively, in the training cohort and 0.652 and 56.7%, respectively, in the testing cohort. Conclusion: The combined clinical and PET/CT radiomics model could identify the EGFR mutational status in lung adenocarcinoma with moderate accuracy. However, distinguishing between EGFR 19 del and 21 L858R mutational subtypes was more challenging using PET/CT radiomics.

Susceptibility Testing of Helicobacter pylori to Metronidazole and DNA Fingerprints of Resistant Strains in Singapore

Hua, JieSong,Yeoh, Khay-Guan,Zheng, PengYuan,Ng, Han Chong,Ho, Bow 한국미생물 · 생명공학회 1999 Journal of microbiology and biotechnology Vol.9 No.3

It was shown that brain-derived neurotrophic factors (BDNFs) secreted from human neuroblastoma cells can significantly improve the growth of the neurites of PC12 nerve cells. The addition of purified BDNFs elongated the neurites of PC12 nerve cells two to three times more than the case where the addition was not made. The perfusion rate strongly affected the change of the size of human neuroblastoma cells because the cell size decreased as the perfusion rate increased. This could also influence the productivity of BDNF from the cells. It is also important to note that the BDNF production was decreased when the cell size was reduced. BDNF production rate also decreased at a fast perfusion rate in a smaller cell size. At the relatively fast perfusion rate of 18 ㎖/h, the ratio of apoptotic to necrotic cells dramatically decreased, which possibly caused the decrease of BDNF production. It has been proven that the secretion of BDNF from human neuroblastoma cells was a partially growth-related process by yielding 6.2×10 exp(-8)g of BDNF/cell of growth related parameter and 0.48×10 exp(-9)g of BDNF/cell/h of nongrowth-related parameter in a growth kinetic model. In addition, it was also found that the perfusion rate played a very important role in controlling the cell death mechanism.

Integrated analysis of DNA methylome and transcriptome reveals SFRP1 and LIPG as potential drivers of ovarian cancer metastasis

Jiani Yi,Mengting Wu,Zhihong Zheng,Qing Zhou,Xufan Li,Yan Lu,Pengyuan Liu 대한부인종양학회 2023 Journal of Gynecologic Oncology Vol.34 No.6

Objective: More than 75% of ovarian cancer patients are diagnosed at advanced stages and die of tumor cell metastasis. This study aimed to identify new epigenetic and transcriptomic alterations associated with ovarian cancer metastasis. Methods: Two cell sublines with low- and high-metastasis potentials were derived from the ovarian cancer cell line A2780. Genome-wide DNA methylome and transcriptome profiling were carried out in these two sublines by Reduced Representation Bisulfite Sequencing and RNA-seq technologies. Cell-based assays were conducted to support the clinical findings. Results: There are distinct DNA methylation and gene expression patterns between the two cell sublines with low- and high-metastasis potentials. Integrated analysis identified 33 methylation-induced genes potentially involved in ovarian cancer metastasis. The DNA methylation patterns of two of them (i.e., SFRP1 and LIPG) were further validated in human specimens, indicating that they were hypermethylated and downregulated in peritoneal metastatic ovarian carcinoma compared to primary ovarian carcinoma. Patients with lower SFRP1 and LIPG expression tend to have a worse prognosis. Functionally, knockdown of SFRP1 and LIPG promoted cell growth and migration, whereas their overexpression resulted in the opposite effects. In particular, knockdown of SFRP1 could phosphorylate GSK3β and increase β-catenin expression, leading to deregulated activation of the Wnt/β-catenin signaling. Conclusion: Many systemic and important epigenetic and transcriptomic alterations occur in the progression of ovarian cancer. In particular, epigenetic silencing of SFRP1 and LIPG is a potential driver event in ovarian cancer metastasis. They can be used as prognostic biomarkers and therapeutic targets for ovarian cancer patients.