A high-absorption and self-driven salt-resistant black gold nanoparticle-deposited sponge for highly efficient, salt-free, and long-term durable solar desalination

2019 ◽  
Vol 7 (6) ◽  
pp. 2581-2588 ◽  
Author(s):  
Yizhen Liu ◽  
Zhipeng Liu ◽  
Qichen Huang ◽  
Xuechen Liang ◽  
Xuechang Zhou ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Resistance Mechanism ◽  
Salt Resistance ◽  
The Self ◽  
Solar Absorption ◽  
Highly Efficient ◽  
Solar Desalination ◽  
High Absorption

The self-driven salt resistance mechanism and high solar absorption of BDS realized efficient and long-term durable solar desalination.

Highly Salt-Resistant and All-Weather Solar-Driven Interfacial Evaporators with Photothermal and Electrothermal Effects Based on Janus Graphene@Silicone Sponges

2020 ◽  
Author(s):  
Lingxiao Li ◽  
Junping Zhang
Keyword(s):  
Evaporation Rate ◽  
Salt Resistance ◽  
Performance Degradation ◽  
Clean Water ◽  
Nacl Solution ◽  
Solar Absorption ◽  
Water Collection ◽  
Electrothermal Effects ◽  
Salt Diffusion

Abstract Solar-driven interfacial evaporators are very promising for obtaining clean water, but suffer from serious performance degradation by salt-fouling, low evaporation rate under weak illumination and low clean water collection rate. Here, we report highly salt-resistant and all-weather evaporators with photothermal and electrothermal effects based on the Janus graphene@silicone sponges with opposing wettability. The evaporators achieve a remarkable high evaporation rate of 6.53 kg m-2 h-1 for 3.5 wt% NaCl solution under 1 sun illumination with a 5 V solar cell as compensation owing to their high solar absorption, low thermal conductivity, unique Janus structure and synergetic photothermal and electrothermal effects. Even in gloomy and dark environments, the evaporators could still generate vapor (1.51 kg m-2 h-1). Moreover, the evaporators feature long-term excellent salt-resistance, e.g., >10 d continuous evaporation in 10 wt% NaCl solution without performance degradation and salt precipitation, because of ultrafast water supply and salt diffusion in the macroporous superhydrophilic shell. Furthermore, the evaporators show high clean water collection rates of 21.92 kg m-2 d-1 (1 sun-9 h/0 sun-15 h + 5 V, indoor) and 9.65 kg m-2 d-1 (natural sun light + 5 V, outdoor). This study offers a new approach for efficiently obtaining clean water via solar desalination.

scholarly journals 3D Bragg coherent diffractive imaging of five-fold multiply twinned gold nanoparticle

Nanoscale ◽  
2017 ◽  
Vol 9 (35) ◽  
pp. 13153-13158 ◽  
Author(s):  
Jong Woo Kim ◽  
Andrew Ulvestad ◽  
Sohini Manna ◽  
Ross Harder ◽  
Eric E. Fullerton ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Formation Mechanism ◽  
Diffractive Imaging ◽  
Coherent Diffractive Imaging

The formation mechanism of five-fold multiply twinned nanoparticles has been a long-term topic because of their geometrical incompatibility.

scholarly journals The Challenge of Educating Purposeful Teachers in Finland

2021 ◽  
Vol 11 (1) ◽  
pp. 29
Author(s):  
Elina Kuusisto ◽  
Kirsi Tirri
Keyword(s):  
Teacher Education ◽  
Student Teachers ◽  
21St Century ◽  
School Community ◽  
The Self ◽  
Moral Commitment ◽  
Mediating Factor

This article discusses the challenges of educating teachers in Finland. As a goal in teacher education for the 21st century we propose the purposeful teacher, referring to a teacher who has a long-term moral commitment to serve students, the school community and society. Our data collected from student (N = 912) and practising (N = 77) teachers yielded information on the purposes they identified as important in their lives. The survey included quantitative instruments and open- ended questions. The teachers identified happiness, relationships, work and self-actualisation as the most important contents of their aspirations. All the content categories could be understood as potential purposes in that the benefit extended beyond the teachers themselves. However, almost half of the student teachers (46%) and over half of teachers (55%) revealed only self-orientation. Less than half of them (43%, 36%, respectively) showed a beyond-the-self orientation, which is indicative of a purposeful teacher. Among the practising teachers, teaching appeared to be mainly a mediating factor in realising their purposes or aspirations. These results have implications related to contemporary teacher education in Finland. Both pre- and in-service teachers need to know about purposeful teaching in order to find meaning in their work.

Micro-scale hollow nanosphere as highly efficient ORR electrocatalyst derived from the self-assembly of triblock copolymer (L64)

Ionics ◽  
2021 ◽  
Vol 27 (4) ◽  
pp. 1611-1618
Author(s):  
Xiaowen Ge ◽  
Xiaomei Du ◽  
Yin Sun ◽  
Junjie Zhang ◽  
Zhongyu Qiu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Triblock Copolymer ◽  
The Self ◽  
Hollow Nanosphere ◽  
Micro Scale ◽  
Highly Efficient

scholarly journals Self-buffering capacity of a human sulfatase for central nervous system delivery

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yi Wen ◽  
Nazila Salamat-Miller ◽  
Keethkumar Jain ◽  
Katherine Taylor
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Buffering Capacity ◽  
The Self ◽  
High Concentration ◽  
Formulation Design ◽  
The Central Nervous System ◽  
Therapeutic Enzymes ◽  
Intrathecal Space

AbstractDirect delivery of therapeutic enzymes to the Central Nervous System requires stringent formulation design. Not only should the formulation design consider the delicate balance of existing ions, proteins, and osmolality in the cerebrospinal fluid, it must also provide long term efficacy and stability for the enzyme. One fundamental approach to this predicament is designing formulations with no buffering species. In this study, we report a high concentration, saline-based formulation for a human sulfatase for its delivery into the intrathecal space. A high concentration formulation (≤ 40 mg/mL) was developed through a series of systematic studies that demonstrated the feasibility of a self-buffered formulation for this molecule. The self-buffering capacity phenomenon was found to be a product of both the protein itself and potentially the residual phosphates associated with the protein. To date, the self-buffered formulation for this molecule has been stable for up to 4 years when stored at 5 ± 3 °C, with no changes either in the pH values or other quality attributes of the molecule. The high concentration self-buffered protein formulation was also observed to be stable when exposed to multiple freeze–thaw cycles and was robust during in-use and agitation studies.

A self-floating, salt-resistant 3D Janus radish-based evaporator for highly efficient solar desalination

Desalination ◽  
2021 ◽  
Vol 510 ◽  
pp. 115093
Author(s):  
Bowen Lv ◽  
Cong Gao ◽  
Yuanlu Xu ◽  
Xinfei Fan ◽  
Jingkun Xiao ◽  
...  
Keyword(s):  
Highly Efficient ◽  
Solar Desalination

scholarly journals “Industrious Revolution” Revisited: A Variety of Diligence Derived from a Long-Term Local History of Kuta in Kyô-Otagi, a Former County in Japan

Histories ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 108-121
Author(s):  
Satoshi Murayama ◽  
Hiroko Nakamura
Keyword(s):  
Early Modern ◽  
Industrial Production ◽  
Industrial Revolution ◽  
Local History ◽  
The Self ◽  
Modern Times ◽  
Original Theory ◽  
Self Reliance ◽  
History Of

Jan de Vries revised Akira Hayami’s original theory of the “Industrious Revolution” to make the idea more applicable to early modern commercialization in Europe, showcasing the development of the rural proletariat and especially the consumer revolution and women’s emancipation on the way toward an “Industrial Revolution.” However, Japanese villages followed a different path from the Western trajectory of the “Industrious Revolution,” which is recognized as the first step to industrialization. This article will explore how a different form of “industriousness” developed in Japan, covering medieval, early modern, and modern times. It will first describe why the communal village system was established in Japan and how this unique institution, the self-reliance system of a village, affected commercialization and industrialization and was sustained until modern times. Then, the local history of Kuta Village in Kyô-Otagi, a former county located close to Kyoto, is considered over the long term, from medieval through modern times. Kuta was not directly affected by the siting of new industrial production bases and the changes brought to villages located nearer to Kyoto. A variety of diligent interactions with living spaces is introduced to demonstrate that the industriousness of local women was characterized by conscience-driven perseverance.

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