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As an alternative to Gadolinium, metabolically inert hyperpolarized contrast agents have been used in perfusion studies. For myocardial perfusion measurements, it is challenging to reliably obtain perfusionrelated signals due to partial volume effects. We propose a constrained decomposition approach, enforcing prior knowledge of the residue function being temporally decreasing. The method is capable of separating the arterial and perfusion components and the quantified perfusion map is not visibly affected by partial volume effects.

We propose a 3D gradient echo sequence with hyperpolarized HP001 as contrast agent for whole heart myocardial perfusion quantification. The estimated perfusion values are correlated with the perfusion values estimated from dynamic contrast enhanced (DCE)-MRI.

Reasonably using oil spill dispersant has become one of the important emergency means intended to handle offshore oil spill accidents. With the worldwide nonstop occurrence of offshore oil spill accidents, the effect and toxicity influence of oil spill dispersant have seized popular attention. In particular, oil spill dispersant used in deepwater oil spill accidents urgently needs undergo evaluation of its underwater jetting effect. In this paper, the authors summarized the present condition and existing problems of researches on formula development, sea-surface and underwater application effect evaluation of oil spill dispersant. In addition, the authors gave a description about the progress made in the researches on new environment-friendly oil spill dispersant carried out by their laboratory and in the effect evaluation technology of sea-surface and underwater application of oil spill dispersant.

Due to the effect of multiple factors, such as tide, temperature and pressure, deepwater oil spill is greatly different from surface oil spill in terms of behavior and fate. In this paper, according to the deepwater environmental characteristics and oil properties in the South China Sea, we establish a high-resolution hydrodynamic background data field and build a model of deepwater oil spill and finally develop 3D visualization system based upon the research on oil spill behavior and fate, so as to improve the deepwater oil spill emergency response of CNOOC and consequently provide technical support for the emergency response of deepwater oil spill.

Generally, large marine oil spill accidents should be disposed of by more than one oil spill emergency vessel. Due to the influence of such factors as sea conditions, drifting and diffusion of spilled oil and the configuration of emergency vessels; however, the coordination degree of the operation of on-site emergency vessels is critical to the efficiency and effectiveness of oil spill disposal. In this paper, we, based upon the characteristics of marine oil spill emergency disposal environment and the requirements for emergency vessel scheduling, put forward a whole set of operation scheduling scheme of marine oil spill emergency vessels, integrating the ENC, GPS, AIS, wireless network and oil spill monitoring technologies, to improve the capacity of marine oil spill disposal.

Based upon the current situation of marine oil spill emergency response capacity evaluation in China and the advanced experience of emergency response capacity evaluation in other fields at home and abroad, this paper establishes an evaluation indicator system of marine oil spill emergency response capacity, which includes 3 Level I indicators and 18 Level II indicators. On this basis, we decide the weight of the indicators at different levels by using the advanced analytic hierarchy process (AHP) and get marine oil spill emergency response capacity evaluation rating through the fuzzy comprehensive evaluation method (FCE). Researches show that the evaluation indicator system is reasonable and practical, and provides a new way for the oil spill emergency response capacity evaluation.

Mini SAR was developed for the oil spill monitoring, working on C band, VV polarization, with the weight of 24kg and finest resolution of 0.5m, and could be aboard on manned and unmanned aerial vehicles. The mini SAR made the real time and continual imaging of large coverage available, and recorded the original signals for fine imaging further back to ground. The experiment was carried out in August and September of 2015 in Yantai and Weihai offshore waters, with the mini SAR on board the cruiser of State Oceanic Administration. And images of oil rigs, vessels, floating rafts and oil look likes were acquired with good quality. The images were interpreted and analyzed combing optical images, and the automatic detection of oil slick in mini SAR images was proposed. And it was indicated that the mini SAR provided high quality SAR images, supporting the oil slick detection and marine monitoring. Next the research on real time transmission of oil detection and early warning messages would be carried out to satisfy the time efficiency of oil spill monitoring.

The influence of ammonium concentration of influent on the nitrification and biodegradation was studied. High ammonium concentration will lead a great amount of ammonia which is proved to be inhibitive and toxic to the bacterial in the bioreactor. Hence the nitrification and biodegradation process are affected.