Aalborg University

VBN (Videnbasen) Aalborg Universitets forskningsportal
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    184394 research outputs found

    Analysis of cryogenic CO2 capture technology integrated with Water-Ammonia Absorption refrigeration cycle for CO2 capture and separation in cement plants

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    Utilizing post-combustion CO2 capture technologies is among the most effective pathways to achieve carbon neutrality by 2050, especially in industries like cement production, where renewables alone cannot sufficiently reduce CO2 emissions. In such scenarios, cryogenic CO2 capture (CCC) emerges as an effective solution for capturing CO2 from both large and small unavoidable point sources. Renowned for its high energy efficiency, minimal investment and operational costs, as well as low energy penalties compared to conventional post-combustion CO2 capture methods, the CCC process can significantly contribute to achieving CO2 neutrality by 2050. This study investigates the application of the CCC process integrated with water-ammonia Absorption Refrigeration Cycle (ARC) for capturing CO2 from the flue gas emitted by a cement factory. This study demonstrated that the CCC process can effectively separate CO2 from the gas mixture in both liquid and gas phases while the form of the separated CO2 minimally affecting the energy penalty of the process. Furthermore, the results indicate that incorporating the ARC significantly enhances the performance of the CCC process, reducing its energy penalty by up to 6% without necessitating significant increases in equipment costs.</p

    Quicksand

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    75 Years of Progressive Legal Development by the International Law Commission:The Contribution to Regulation of Search and Rescue of Refugees and Migrants at Sea

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    This study examines how the work of the International Law Commission (ILC) has contributed to the ‘progressive development’ of general international law relevant to regulating rescue and disembarkation of refugees and migrants found at sea. It explores the ILC’s texts on interpretation and implementation of international obligations, state responsibility, fragmentation and harmonization of international law, and the status of certain principles of general international law, including jus cogens general principles of law and the principle of good faith, which present legal parameters for regulation of maritime search and rescue operations. In conducting doctrinal examinations of international law and gathering evidence of the practice of States and other relevant actors, the ILC contributes by analysing, clarifying, and systemising important topics of general international law. However, state implementation frequently falls short of the legal interpretations of the ILC, particularly as they relate to respect for and protection of human rights at sea. Therefore, while the ILC needs new strategies to directly connect with States and international organisations, it remains reliant on the mutual following of national and international courts and tribunals, and its mutual contribution in scholarship

    Communication about specialized knowledge

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    Adenocarcinoma In Situ of the Uterine Cervix (AIS) Treated by Loop Electrosurgical Excision Procedure Strategy: An Observational Study

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    OBJECTIVES: Evaluation of the results of treatment of adenocarcinoma in situ by loop electrosurgical excision procedure and the safety of a conservative strategy.METHODS: Identification of all cases of adenocarcinoma in situ treated by loop electrosurgical excision procedure at our institution and follow-up by a conservative strategy. Completeness of the identification of all cases was secured by data from the National Pathology Registry. The treatment strategy was based on cytologic follow-up performed by a general practitioner and, irrespective of margin status of the cone, only the results of the postoperative surveillance were indicative of further treatment.RESULTS: A total of 224 patients were identified. The overall recurrence rate with a mean follow-up time of 87.8 months was 7.6% (17/224). The recurrence rate in patients with involved margins was significantly higher than in patients with uninvolved margins, 15.7% vs 5.2%, respectively. Six recurrences were diagnosed at first examination 6 months postconization in patients with involved margins. They were treated with hysterectomy in 4 cases and reconization in 1 case. If involvement of margins alone had been an indication of further therapy (hysterectomy or reconization) immediately after conization, the conservative management strategy prevented 46 surgical procedures. Two cases of invasive cancer were diagnosed during follow-up, 150 months and 196 months after primary treatment, and after normal follow-up examinations. These 2 cases must be considered de novo cases and cannot be considered treatment failures.CONCLUSION: The conservative management strategy thus seems safe, and unnecessary surgical procedures were avoided.</p

    Crusading in the North

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    Rezension zu Dankwa, S. O., Filep, S.-M., Klingovsky, U., &amp; Pfruender, G. (Eds.). (2021). Bildung, Macht, Diversität: Critical Diversity Literacy im Hochschulraum. Transcript.

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    Book review for Dankwa, S. O., Filep, S.-M., Klingovsky, U., &amp; Pfruender, G. (Eds.). (2021). Bildung, Macht, Diversität: Critical Diversity Literacy im Hochschulraum. Transcript

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    VBN (Videnbasen) Aalborg Universitets forskningsportal is based in Denmark
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