bluuebunny/crossref_metadata_2025_split huggingface dataset:
Polytriphenylamine Conjugated Microporous Polymers as Versatile Platforms for Tunable Hydrogen Storage
Authors: Worth John D. , Seddon Annela M. , Ting Valeska P. , Faul Charl F. J. 
Published: October 2024

AbstractHydrogen (H2) as a fuel source presents a promising route toward decarbonization, though challenges in its storage remain significant. This study explores the synthesis and characterization of polytriphenylamine (PTPA) conjugated microporous polymers (CMPs) for H2 storage. Utilizing a combination of Buchwald–Hartwig (BH) coupling, the Bristol–Xi'an Jiaotong (BXJ) approach, and variations in monomer reactive site stoichiometry, a polymer with specific surface areas in excess of 1150 m2 g−1 and micropore volume of 0.47 cm3 g−1 is developed. H2 storage capacities are measured, achieving excess gravimetric uptakes of 1.65 wt.% at 1 bar and 2.51 wt.% at 50 bar and 77 K, with total capacities reaching 4.40 wt.% at 100 bar and 77 K. Net adsorption isotherms reveal advantages to H2 storage using PTPA adsorbents over traditional compression up to pressures of 10 bar at 77 K. High mass transfer coefficients of 4.95 min−1 indicate a strong material affinity for H2. This study highlights the impact of monomer ratio adjustments on the porosity and excess, total, and net H2 adsorption capacities of PTPA‐based CMPs, offering insights into the importance of a non‐stoichiometric monomer concentration when developing efficient CMP‐based H2 storage materials.
Hierarchical Assembly of Ternary MOF‐Derived Sandwich Composites for High‐Efficiency Tunable Electromagnetic Wave Absorption
Authors: Wu Tong , Ren Fang , Guo Zhengzheng , Wang Jiaqi , Zong Ze , Wang Lunwu , Jin Yanling , Chen Zhengyan , Ren Penggang 
Published: October 2024

AbstractThe proliferation of electronic devices drives the adoption of electromagnetic wave (EMW) absorbing materials to mitigate electromagnetic pollution. Metal‐organic frameworks (MOFs) reveal great potential in EMW absorption field due to their unique pore structure and outstanding physicochemical properties. However, single MOFs are difficult to achieve both efficient absorption and wide frequency coverage owing to the limited electromagnetic properties and structural composition. Herein, a sandwich‐like ternary MOF composite is successfully synthesized through a hierarchical assembly strategy. Following high‐temperature treatment, the materials are converted into nitrogen‐doped porous carbon with magnetic metals, non‐magnetic metal oxides, and carbon nanotubes on the surface (labeled as TiO2/C@Co/N/C@CNT). The unique sandwich structure of the resulting derivatives provides a multi‐level microstructure and multi‐component synergistic effects, significantly enhancing electromagnetic wave absorption capabilities and broadening the effective absorption bandwidth (EAB). At 1.8 mm matching thicknesses, the material achieves a reflection loss of −56.3 dB and a 6.6 GHz EAB. Adjusting the matching thicknesses to 2.3 and 3.1 mm extends the EAB to 6.1–18 GHz, with absorption peaks of −47.6 and −47.1 dB. This work offers a novel guidance for constructing advanced MOF‐derived materials with ultra‐broadband EAB and strong EMW absorption through meticulous structural design and multiple components combination.
Climate Crisis: Systemic Aspects of De-Carbonization and Macro-financial Requirements
Authors: Ghymers Christian 
Published: October 2024

AbstractUrgent de-carbonization means a massive systemic change that requires a coherent approach for spurring global investments while reorientating them toward Emerging Market and Developing Economies (EMDEs). Both issues require a macroeconomic rebalancing with geographical and geopolitical impacts. Available model-based scenarios are dangerously misleading because they rely upon implicit assumptions that ignore the permacrisis with its growing uncertainty and the systemic and governance issues that plague the present unsustainable economic order. After giving the order of magnitude of the huge amounts of urgent investments required by global de-carbonization, this chapter warns against “greenwishing” (the illusion that low-cost solutions are at hand) and, more precisely, against two major flaws in the current financial system. First, even with a CO2 tax in view, private yields are unable to reorient investments to de-carbonization on time. Second, the asymmetric International Monetary System is unable to ensure the capital inflows necessary to close the estimated funding gap in the EMDEs. This assessment implies the need for a multilateral intervention at two levels: (i) to compensate today’s private yields in investments that abate greenhouse gases, because CO2 taxation, which needs to be slowly progressive, is unable to compensate ex ante the too high uncertain expectations on de-carbonization investments; and (ii) to issue a safe asset at the multilateral level, creating a global Lender-of-Last-Resort able to manage global liquidity, solving the Triffin Dilemma.
Contextualizing China–Africa Collaboration on Food Security: Biographical Narrative
Authors: Gammachu Biraanu 
Published: October 2024

AbstractChina–Africa formal contact began over half a century ago. Understanding the compound factors in this interaction and contextualizing them with food security is an interesting subject that has preoccupied both academia and practitioners. Conceptually, this Chapter employs a biographical narrative perspective to contextualize China–Africa collaboration on food security. In Africa, food security is an agenda item linked to foreign direct investment, cooperation, donation, and foreign assistance. China’s advancements in agricultural science, technology, and innovation make a competitive partner for Africa. In the context of the global economic divide between the Global North and the Global South, the study argues that Africans’ self-image and continuity - i.e., their biographical narrative - is imperative in achieving a sustainable China–Africa collaboration. Beyond physical geography, poverty dimensions, race, and/or ethnicity , African nations have multiple realities. Reimagining China’s presence in Africa within the framework of the member states’ inimitable and multiple biographical narrative can undercut the complexity of China–Africa food security collaboration.
Technology, Information and Power: the Role of CGTN Africa in China–africa Relations
Authors: Ramontja Naledi , Petla Vhonani , Zondi Siphamandla 
Published: October 2024

AbstractAs the relations between Africa and China deepen, questions emerge about the extent to which people are getting included in the relationship, given the possibilities that are offered by new technologies for bridging the huge geographical distance between these two territories. The relationship has grown significantly since Mao Zedong’s Three Worlds Theory, which set out China’s global strategy in the aftermath of World War Two. Of course, Zhou Enlai's visit to Africa in the early 1960s and the expansion of Chinese foreign aid after 1968 when Peking then adopted the Eight Principles of Foreign Aid. The post-Cold War has seen a massive increase as China’s rise gained significant momentum and crystallized in the Forum for China–Africa Cooperation. This has seen billions worth of trade and investment flow into Africa, resulting in a massive expansion of critical industrial infrastructure. But with this has also come concerns and controversies about the intentions of China and the preparedness of Africa to harness this relationship to its advantage. There has been concerns about how this relationship includes or reaches out to ordinary people. In response, efforts have been made to expand people-to-people exchange through educational scholarships, research collaboration, public dialogues and, increasingly through the use of the media platforms such as Xinhua, China Central Television (CCTV) and the China Global Television Network CGTN-Africa. However, such initiatives raises questions about the role of broadcasting in China-Africa relation, and, whether it reinforces a one-way asymmetric or unequal relationship, and how does technology transfer and cooperation offer opportunities for more mutually beneficial relationships? In this regard, information technologies have a potential. This chapter will reflect on technology, information, and power in Africa–China Relations through a case study of the Nairobi-based CGNTV-Africa.
Technology Transfer and Technological Spillovers from Chinese Tech Giant in North African Countries: The Case of Huawei in Algeria
Authors: Kadi Tin Hinane El , Djeflat Abdelkader 
Published: October 2024

AbstractSino-North African relations intensified at the turn of the century with a significant growth in trade, investment, and turnkey contracts. While economic exchanges did not initially break patterns of unequal exchange, since 2013, Beijing’s Belt and Road Initiative (BRI) has signalled a qualitative shift in China’s engagement with the region and the rest of the continent. China has committed to increase investments in high value-added sectors, promote research and innovation and to boost cooperation in science, technology and research with countries across North Africa in the digital sector in particular which is emerging significantly in China-North African partnerships. China is becoming ever-more important actors in North Africa through the Digital Silk Road (DSR), the digital component of the BRI. North African governments see the Digital Silk Road as an opportunity to help bridge the digital divide and bolster their own national efforts to build digital economies, create jobs for the millions of unemployed university graduates and ultimately succeed in effective technology transfer mainly through training and spillover. Drawing on the rich literature on technology transfer and innovation in developing countries and an extensive field work conducted through observant participation methodology in the Algerian industrial sector, this chapter aims at assessing the developmental implications of the Digital. Using the case of the giant chinese tech company Huawei, it will attempt to unpack dynamics between Chinese and local state agencies, firms and universities, and assess the resulting outcomes in terms of technology transfer.
China’s Green Energy Investment in Kenya, Ethiopia and Tanzania: Implications for Aid Policy
Authors: Onjala Joseph 
Published: October 2024

AbstractSub-Saharan Africa (SSA) countries deal with multiple challenges in the transition to a modern and sustainable energy system. The countries are faced with severe shortage of energy supply after nearly two decades of fast-growing economic activity. The energy challenges are often exacerbated by unsatisfactory services. China’s development financing (among other donors) in infrastructure development has been handy in alleviating the energy challenge in SSA. In this chapter, we examine China’s energy finance in Kenya, Ethiopia and Tanzania as case studies. The Chinese development finance has been however split to several other sectors such as transport infrastructure, manufacturing, construction, agriculture and tourism industry. Characteristically, Chinese development support has been channelled in sectors that Western development partners have shown reluctance to engage. The green energy finance benefitted sectors that ranked high among the flagship projects across the Eastern Africa countries. Even with a multiplicity of donor support, the Eastern Africa region faces myriad challenges in transitioning to modern and sustainable energy systems. Our analysis points to the need to re-examine the debt policy in order to optimize on both the technological and economic benefits of Chinese financial flows to the energy sector.
China–Africa Higher Education Collaboration from the Perspective of Synergistic: The Case of Beijing Foreign Studies University
Authors: Yang Dan , Tang Mingfeng , Zhang Yakun , Mei Yifan , Muchie Mammo 
Published: October 2024

AbstractThe collaboration of China with Africa started with infrastructure synergistic in 1976 by building the Tanzam Railway with the cooperation of China with Tanzania and Zambia. China has continued to support Africa with infrastructure development. Since China launched the “Belt and Road” initiative in 2013, it has been widely supported by many African countries. Education, as the foundation of national prosperity and people's wellbeing plays a fundamental and leading role in China–Africa joint construction of the “Belt and Road”. The relationship of China with Africa is synergistic as the inputs generate outputs that are more than the sum of the parts by working together with cooperation. This research takes one of the leading Chinese universities—Beijing Foreign Studies University as a case study by being inspired with the theory of synergistic. The research analyses the mechanism of interaction and coupling between China and Africa universities, governments, international organizations (e.g. United Nations, UNESCO) to demonstrate cooperative actions, achievements and future cooperation outlook of Beijing Foreign Studies University from the perspective of synergistic, and highlights some policy and managerial implications, and makes some recommendations.
China–Africa Collaboration in Agriculture and Food Security: Prospects and Challenges
Authors: Kampini Tamika , Kalepa Jessie 
Published: October 2024

AbstractThis chapter explores the collaboration between China and Africa in the field of agriculture and food security. China and Africa have a long-standing partnership in various sectors, and agriculture and food security have emerged as key area of collaboration in recent years. Through various initiatives and programs, China and Africa have been working together to address the challenges of food insecurity in Africa, which is a significant impediment to the continent's economic growth and development. However, there are also challenges associated with the collaboration. One of the main challenges is ensuring that the collaboration is based on reciprocal benefit, respect, and understanding, and that it does not lead to the exploitation of African resources or undermine local agriculture systems. This chapter argues that while the collaboration between China and Africa in agriculture and food security presents significant opportunities for addressing food insecurity and promoting sustainable development in Africa, there are also challenges that need to be addressed to ensure that it contributes to sustainable development in the long run.
The Role of the Financial Sector in Energy Justice
Authors: Šeho Mirzet , Hodžić Sabina 
Published: October 2024

AbstractAs the twenty-first century is characterised by a growing awareness of climate change and environmental degradation, the financial sector has started to channel funds into more sustainable energy investments. Therefore, this chapter provides a comprehensive and engaging exploration of how the financial sector, along with financial institutions and financial innovation, can be a powerful ally in the pursuit of energy justice. Furthermore, this chapter presents how financial institutions, instruments, and innovations play a crucial role in shaping sustainable energy systems. Therefore, policymakers, financial institutions, and energy companies need to work together to create regulatory frameworks and investment strategies for the global energy transition. This will not only fulfil economic or environmental but also moral requirements to ensure a just and sustainable future for all generations.
Differential uptake of arginine derivatives by the human heteromeric amino acid transporter b0,+AT-rBAT (SLC7A9-SLC3A1)
Authors: Banjarnahor Sofna , Scherpinski Lorenz A. , Keller Max , König Jörg , Maas Renke 
Published: October 2024

AbstractL-arginine and its (patho-)physiologically active derivatives, L-homoarginine and asymmetric dimethylarginine (ADMA), show significant differences in their renal clearance. The underlying molecular mechanisms remain to be elucidated, but selective tubular transport protein-mediated mechanisms likely play a role. In the present study, we investigate the human heteromeric transporter b0,+AT-rBAT (encoded by the SLC7A9 and SLC3A1 genes) as a potential candidate because it is localized in the luminal membrane of human proximal tubule cells and capable of mediating the cellular uptake of amino acids, including L-arginine. Double-transfected Madin-Darby canine kidney (MDCK) cells stably expressing human b0,+AT-rBAT exhibited significant uptake of L-arginine and L-homoarginine, with apparent Km values of 512.6 and 197.0 μM, respectively. On the contrary, ADMA uptake was not saturated up to 4000 μM, with a transport rate > 5 nmol × mg protein−1 × min−1. With an IC50 value of 115.8 μM, L-arginine inhibited L-homoarginine uptake. Conversely, L-arginine only exhibited a partial inhibitory effect on ADMA uptake. Taken together, our data indicate that b0,+AT-rBAT may contribute to the differential renal handling of L-arginine, L-homoarginine, and ADMA.
Relationships Between Experiences of Autonomy and Well(Ill)-Being for K-12 Youth: A Meta-Analysis
Authors: Vite Amanda , Patall Erika A. , Chen Man 
Published: October 2024

AbstractChildhood and adolescence are pivotal developmental stages for psychological health. An understanding of psychological mechanisms related to well-being is important for promoting positive life outcomes for youth. Research generally shows that the basic psychological need for autonomy is significantly associated with well-being. To examine the magnitude and sources of variation in this relationship, we conducted a meta-analysis of 90 reports to analyze the average effect of autonomy need satisfaction (ANS) and frustration (ANF) on indicators of psychological well- and ill-being for K-12 (Kindergarten to 12th grade) youth. Results indicated that ANS was positively associated with psychological well-being and negatively associated with psychological ill-being among youth. Further, ANF was negatively associated with psychological well-being and positively associated with psychological ill-being. Moderator analyses indicated that the association between ANS and well-being was stronger for studies conducted with children and adolescents in East Asian countries compared to studies conducted in the USA, Canada, or Northern Europe when controlling for publication status and measurement reliability. Results also showed that the average correlation between ANS and well-being was stronger for studies located in more collectivistic countries compared to individualistic countries when controlling for publication status and measurement reliability. The relationship between ANS and ill-being was stronger for studies conducted in the USA and Canada compared to East Asian and European contexts. Together, results suggest that autonomy satisfaction is related to the well- and ill-being of youth across cultural contexts, but that there is cultural variation in the association between experiences of autonomy and well-being.
Paleo-ecological quality status induced by natural and anthropogenic impacts in the last 2000 years: a multidisciplinary approach in the outer region of Sepetiba Bay (SE Brazil)
Authors: Saibro Murilo Barros , Alves Martins Maria Virgínia , Figueira Rubens , Pereira Egberto , Evangelista Heitor , Licínio Marcus Vinícius , Guerra Josefa Varela , de Castro Figueiredo Simões Felipe , Bouchet Vincent Marcel Pierre , Francescangeli Fabio , Fontalini Fabrizo , de Lima Ferreira Paulo Alves , de Oliveira Ana Beatriz Ramos , Dasmaceno Fabricio Leandro , Senez-Mello Thaise , Reis Graziele Arantes , Sousa Silvia Helena Mello , Dino Rodolfo , dos Reis Antonio Tadeu , de Alencar Castro João Wagner , Rocha Fernando 
Published: October 2024

Abstract
Purpose
Some marine organisms can be used as Biological Quality Elements to estimate the degree of environmental impact and to monitor the health of benthic habitats. Organisms with mineralized protections, such as benthic foraminifera, can provide helpful information on the evolution of the coastal system over a long period and determine the Paleo-Ecological Quality Status (Paleo-EcoQS). This work aims at reconstructing the Paleo-EcoQS in the heavily anthropized Sepetiba Bay (SB; Rio de Janeiro State, SE Brazil).

Materials and methods
This work is based on a multiproxy approach, including textural, geochemical, and foraminiferal data along the core SP11 retrieved near the Pico da Marambaia (a mountain on the tip of the Marambaia Barrier Island). Geochemical analyses encompassing total organic carbon (TOC), total sulfur (S), total nitrogen (N), calcium carbonate (CaCO3), stable isotopes in organic matter (OMδ13C, and OMδ15N) and elemental concentrations as well as 201Pb, 137Cs, and radiocarbon dating were performed to characterize the Paleo-EcoQS in the bay.

Results
The values of the Paleo-EcoQS.st (standardized Paleo-EcoQS) index in core SP11 indicate that the paleoenvironmental quality varied from moderate to good between ≈50 AD and ≈1500 AD and from good to high between the ~ 1920s and ~ 1990s. Since the 1990s, the Paleo-EcoQS.st has deteriorated considerably, probably due to the deposition of contaminated dredging material in nearby areas. Ballast water discharge may have introduced alien species, such as Ammonia buzasi, into the SB.

Conclusions
The results obtained in core SP11, compared to those of another core (i.e., SP8) from a nearby area, suggest that the reference level of maximum environmental quality is not always reached in a period before industrialization in coastal ecosystems with significant interaction with the ocean; natural factors, related, for example, to sedimentary dynamic processes or geomorphological changes, can lead to unexpected results.
Molecular Motors in Myelination and Their Misregulation in Disease
Authors: Barbosa Daniel José , Carvalho Cátia , Costa Inês , Silva Renata 
Published: October 2024

AbstractMolecular motors are cellular components involved in the intracellular transport of organelles and materials to ensure cell homeostasis. This is particularly relevant in neurons, where the synaptic components synthesized in the soma need to travel over long distances to their destination. They can walk on microtubules (kinesins and dyneins) or actin filaments (myosins), the major components of cell cytoskeleton. While kinesins mostly perform the anterograde transport of intracellular components toward the plus ends of microtubules located distally in cell processes, cytoplasmic dyneins allow the retrograde flux of intracellular cargo toward the minus ends of microtubules located at the cell soma. Axon myelination represents a major aspect of neuronal maturation and is essential for neuronal function, as it speeds up the transmission of electrical signals. Increasing evidence supports a role for molecular motors in the homeostatic control of myelination. This role includes the trafficking of myelin components along the processes of myelinating cells and local regulation of pathways that ensure axon wrapping. Dysfunctional control of the intracellular transport machinery has therefore been linked to several brain pathologies, including demyelinating diseases. These disorders include a broad spectrum of conditions characterized by pathological demyelination of axons within the nervous system, ultimately leading to axonal degeneration and neuronal death, with multiple sclerosis representing the most prevalent and studied condition. This review highlights the involvement of molecular motors in the homeostatic control of myelination. It also discusses studies that have yielded insights into the dysfunctional activity of molecular motors in the pathophysiology of multiple sclerosis.