scholarly journals Energy Transition in Aviation: The Role of Cryogenic Fuels

Aerospace ◽  
2020 ◽  
Vol 7 (12) ◽  
pp. 181
Author(s):  
Arvind Gangoli Rao ◽  
Feijia Yin ◽  
Henri Werij

Aviation is the backbone of our modern society. In 2019, around 4.5 billion passengers travelled through the air. However, at the same time, aviation was also responsible for around 5% of anthropogenic causes of global warming. The impact of the COVID-19 pandemic on the aviation sector in the short term is clearly very high, but the long-term effects are still unknown. However, with the increase in global GDP, the number of travelers is expected to increase between three- to four-fold by the middle of this century. While other sectors of transportation are making steady progress in decarbonizing, aviation is falling behind. This paper explores some of the various options for energy carriers in aviation and particularly highlights the possibilities and challenges of using cryogenic fuels/energy carriers such as liquid hydrogen (LH2) and liquefied natural gas (LNG).

Psibernetika ◽  
2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Devina Calista ◽  
Garvin Garvin

<p><em>Child abuse by parents is common in households. The impact of violence on children will bring short-term effects and long-term effects that can be attributed to their various emotional, behavioral and social problems in the future; especially in late adolescence that will enter adulthood. Resilience factors increase the likelihood that adolescents who are victims of childhood violence recover from their past experiences</em><em>,</em><em> become more powerful individuals and have a better life. The purpose of this study was to determine the source of resilience in late adolescents who experienced violence from parents in their childhood. This research uses qualitative research methods with in-depth interviews as a method of data collection. The result shows that the three research participants have the aspects of "I Have", "I Am", and "I Can"; a participant has "I Can" aspects as a source of resilience, and one other subject has no source of resilience. The study concluded that parental affection and acceptance of the past experience have role to the three sources of resilience (I Have, I Am, and I Can)</em></p><p><em> </em></p><p><strong><em>Keyword : </em></strong><em>Resilience, adolescence, violence, parents</em></p>


2021 ◽  
Vol 50 (1) ◽  
Author(s):  
Tamar Schlick ◽  
Stephanie Portillo-Ledesma ◽  
Christopher G. Myers ◽  
Lauren Beljak ◽  
Justin Chen ◽  
...  

We reassess progress in the field of biomolecular modeling and simulation, following up on our perspective published in 2011. By reviewing metrics for the field's productivity and providing examples of success, we underscore the productive phase of the field, whose short-term expectations were overestimated and long-term effects underestimated. Such successes include prediction of structures and mechanisms; generation of new insights into biomolecular activity; and thriving collaborations between modeling and experimentation, including experiments driven by modeling. We also discuss the impact of field exercises and web games on the field's progress. Overall, we note tremendous success by the biomolecular modeling community in utilization of computer power; improvement in force fields; and development and application of new algorithms, notably machine learning and artificial intelligence. The combined advances are enhancing the accuracy and scope of modeling and simulation, establishing an exemplary discipline where experiment and theory or simulations are full partners. Expected final online publication date for the Annual Review of Biophysics, Volume 50 is May 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.


2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Maria Laura Annunziata ◽  
Mariamaddalena Scala ◽  
Natascia Giuliano ◽  
Salvatore Tagliaferri ◽  
Olga Carmela Maria Imperato ◽  
...  

The aim of this study was to evaluate the impact of vibroacoustic stimulation (VAS) on computerized cardiotocography short-term variability (STV) and approximate entropy (ApEn) in both low- and high-risk pregnancies. VAS was performed on 121 high- and 95 low-risk pregnancies after 10 minutes of continuous quiet, while their FHR parameters were monitored and recorded by cCTG analysis. Fetal heart rate was recorded using a computer-assisted equipment. Baseline FHR, accelerations, decelerations, STV, long-term irregularity (LTI), ApEn, and fetal movements (FMs) were calculated for defined observational periods before VAS and after 10 minutes. Data were also investigated in relationship with the perinatal outcome. In each group of patients, FHR after VAS remained almost unmodified. Fetal movements significantly increased after VAS in both groups. Results show that only in the high-risk pregnancies, the increase of STV and the decrease of ApEn after VAS were significantly associated with favorable perinatal outcomes.


1987 ◽  
Vol 7 (10) ◽  
pp. 751-755 ◽  
Author(s):  
Abdulrahim Abu-Jayyab ◽  
Ezz-Eddin S. M. El-Denshary ◽  
Abdulrahman M. Ageel ◽  
Mohamed Rafik Dakkak

Short-term and long-term effects of bromocriptine mesylate (10 mg/kg i.p.) on cyclic AMP contents of the liver and some endocrine glands have been investigated in the presence and absence of sulpiride (10 mg/kg i.p.). Results revealed that bromocriptine caused significant elevations in the cyclic AMP contents of the liver and reduction in its adrenocortical content. Bromocriptine effect on the adrenal cortex was antagonized by sulpiride, whereas its effect on the liver was not changed. Bromocriptine did not change the, cyclic AMP content in the thyroid gland or the ovary.


2015 ◽  
Vol 7 (12) ◽  
pp. 1 ◽  
Author(s):  
Tristan Nguyen ◽  
Huy-Cuong Nguyen

<p>Our paper examines what impact capital structure has on firms’ performance in selected firms listed on HCMC Stock Exchange. The data is collected from 147 listed companies during the period from 2006 to 2014. The study not only checks the impact the level of leverage has on firms’ performance, which is found to be negative in this study, but it also uses the short-term and long-term debt ratios to see the effect of debt maturity. However, there is no difference whether it is short-term or long-term. Tangibility is found to be negative with a very high proportion on average. With the suggestion that companies might invest too much in fixed assets and there is a lack of efficiency, this could be the alert for firms to improve their management process. Size and growth are found to be positive, since larger firms have lower costs of bankruptcy and higher growth rates associate with higher performance. Moreover, the study also adds the effects of industry and macroeconomics, and the result shows a correlation between the two factors and firms’ performance.</p>


2016 ◽  
Vol 23 (6) ◽  
pp. 1343-1352 ◽  
Author(s):  
Marion Karl ◽  
Gordon Winder ◽  
Alexander Bauer

While the relation between terrorism and tourism has been an important topic for tourism research, the questions whether terrorism affects tourism immediately and how long after a terrorism event tourism recovers are, as yet, not clearly answered. The aim of this article is to better understand the magnitude and temporal scale of the impact of terrorism on tourism. To this end, a research model differentiating between short-term and long-term effects of terrorism on tourism is developed and analyzed for the destination Israel using data on tourists from Germany. The results show both short-term and long-term impacts with a time lag between the terrorist event and the beginning of tourism decline of 1 or up to 6 months. An economic influence on the development of tourist arrivals was not detected, but seasonality plays an important role in the relationship between terrorism and tourism.


Asian Survey ◽  
2003 ◽  
Vol 43 (4) ◽  
pp. 697-715 ◽  
Author(s):  
Eui Hang Shin

The primary purpose of this study is to investigate the role of civic organizations in political processes in South Korea. More specifically, this article examines the impact of the blacklisting of candidates by the Citizens' Alliance for the 2000 General Election (CAGE) on the outcomes of the National Assembly election of April 13, 2000. I discuss the relationship between the characteristics of political systems and political culture and the emergence of civic organizations. I analyze the effects of CAGE's blacklisting of politicians on the nomination processes of candidates by major political parties. I also discuss the long-term effects of CAGE on the political system.


BMJ Open ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. e055144
Author(s):  
Takahiro Miki ◽  
Yu Kondo ◽  
Hiroshi Kurakata ◽  
Tsuneo Takebayashi ◽  
Mina Samukawa

IntroductionLow back pain and neck pain are among the most common musculoskeletal disorders, and their related medical costs are rising every year. Many interventions are based on the biopsychosocial (BPS) model since the cause of pain is more multifaceted. Physiotherapists have increased opportunities to perform multidisciplinary interventions alone in clinical practice due to a lack of understanding of the model and its cost. Therefore, physiotherapist-led interventions using the BPS model are important and require an updated report summarising their effectiveness. Thus, the purpose of this study will be to summarise and synthesise the effects of physiotherapist-led interventions using the BPS model for spinal disorders.Methods and analysisWe will search the Web of Science, CENTRAL, MEDLINE, PsycINFO, CINAHL and PEDro electronic databases, using a date range from inception to September 2021. We will include only randomised controlled trials for patients diagnosed with spinal disorders who received physiotherapist-led interventions based on the BPS model. The search will be limited to English-language publications. Pain intensity and disability are the primary outcomes. Secondary outcomes are any psychological factors. We will examine the short-term, medium-term and long-term effects, and a subgroup analysis will be conducted, if possible, to investigate the role of additional physiotherapist training.Ethics and disseminationThis study is exempt from ethical approval because it involves publicly available documents. The findings will be submitted for publication in a relevant peer-reviewed journal.PROSPERO registration numberCRD42021258071.


2021 ◽  
Author(s):  
Tetiana Reshetilova ◽  
◽  
Tetiana Kuvaieva ◽  

The article is devoted to the study of advertising transformation under the influence of new trends of consumption as a social action. It is highlighted that the current socio-economic situation is creating new subjects for the analysis of already well-known objects. The place and role of advertising in modern society is certainly based on its market principles in the past, but today it is necessary to take into account a set of influencing factors that were previously mutually exclusive but are now indivisible. The greatest influence is exerted by the socio-cultural aspect of consumer behavior, which is based on values and motivators that come from the lifestyle in a qualitatively new external environment. It means that they are not limited to market transactions. Moreover, in today's conditions, social stratification has receded into the background and is not among the main factors of influence. This transformation of understanding the practice of consumption allows to reasonably recruit and use advertising tools to increase their effectiveness. It is determined that during forming an advertising campaign it is necessary to consider the impact on consumer behavior of modern information technology, namely the selection of the necessary information from the large amount that is available. A large amount of information creates an ambiguous situation for the consumer. This requires the integration of advertising tools. It is established that the parallel use of several advertising media allows to carry out the influence similarly to the technology of purposeful management. The availability of technical means that quickly realize the desire can be recommended for both long-term brand communication and for the short term.


2021 ◽  
Vol 20 (1) ◽  
pp. 76-90
Author(s):  
Tri Ligayanti ◽  
Raldi Hendro

The objective of this paper was to review China’s long-term carbon neutral 2060 policy and to compare with Indonesia’s case in term of energy carriers such as Ammonia and Methanol. Topics regarding China and Indonesia's long-term carbon neutral 2060 policy and strategy are important to be discussed because it will open up issues related to the role of primary energy, chemical-energy nexus and the blue energy economy supported by technology innovation, and political will. The energy-chemical nexus on the background of the Ammonia & Methanol industries are the largest sources of CO2 emissions in China, so it will contribute significantly to emission reductions from the energy transition to carbon neutral energy. From the efforts made by China, it can provide information and considerations to Indonesian policy makers and researchers on their efforts regarding resource management optimization to reconcile the tradeoffs on resources protection and development of socioeconomic as well as to ensure a sustainable system.ABSTRAKTujuan dari makalah ini adalah untuk meninjau kebijakan netral karbon jangka panjang Tiongkok 2060 dan membandingkan dengan kasus Indonesia dalam hal pembawa energi seperti Amoniak dan Metanol. Topik mengenai kebijakan dan strategi jangka panjang karbon netral 2060 Tiongkok dan Indonesia penting untuk dibahas karena akan mengangkat isu terkait peran energi primer, perhubungan energi kimia dan ekonomi energi biru yang didukung oleh inovasi teknologi, dan kemauan politik. Hubungan energi-kimia di latarbelakangi industri Amoniak & Metanol adalah sumber emisi CO2 terbesar di Tiongkok, sehingga akan berkontribusi signifikan terhadap pengurangan emisi dari transisi energi ke energi netral karbon. Dari upaya yang dilakukan oleh Tiongkok, dapat memberikan informasi dan pertimbangan kepada pembuat kebijakan dan peneliti Indonesia tentang upaya mereka mengenai optimalisasi pengelolaan sumber daya untuk mempertemukan timbal balik perlindungan sumber daya dan pengembangan sosial ekonomi serta untuk memastikan sistem yang berkelanjutan.


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