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An octave box inspired energy regularization triboelectric nanogenerator for highly efficient wave energy harvesting

Energy Environ. Sci., 2024, 17,8829-8837
DOI: 10.1039/D4EE02969K, Paper
Yuanchao Ren, Zizhuo Wang, Jie Chen, Fei Wu, Hengyu Guo
Inspired by the mechanical transmission structure of octave boxes, this work proposes a novel energy regularization triboelectric nanogenerator to effectively convert chaotic wave energy into stable electric output.
The content of this RSS Feed (c) The Royal Society of Chemistry




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A safe and new strategy for N-arylation of 2,4-thiazolidinediones via microwave irradiation using base catalyst K2CO3 in DMF

React. Chem. Eng., 2024, 9,842-848
DOI: 10.1039/D3RE00641G, Paper
Ragini C. Patil, Nita M. Khiratkar, Sumeer Ahmed, Joazaizulfazli Jamalis, Aso Hameed Hasan, Malika Berredjem, Sarkar M. A. Kawsar, Ajmal R. Bhat
Green efforts as an alternative to existing conventional methods for providing new tools, knowledge and design of organic synthesis, will contribute to the economy and protecting the environment and health.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Comprehensive Study of Lumped Kinetic Models and Bio-Oil Characterization in Microwave-Assisted Pyrolysis of Sargassum sp.

React. Chem. Eng., 2024, Accepted Manuscript
DOI: 10.1039/D3RE00674C, Paper
Teta Fathya Widawati, Muhammad Fuad Refki, Rochmadi Rochmadi, Arief Budiman
Indonesia, renowned for its tropical marine environments, boasts a rich diversity of macroalgae, with Sargassum being a major contributor. Currently, Sargassum's primary application revolves around alginate extraction, prompting a systematic...
The content of this RSS Feed (c) The Royal Society of Chemistry




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Lupin aims to be part of ‘first wave of generics’ on GLP-1 products: Nilesh Gupta

GLP-1 products going off patent in some markets includes popular Type-2 diabetes and weight-loss drug Ozempic




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12/17:42 CST Heatwave Warning (NT)




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The next wave

Here's an opportunity to learn the nuances of radio at The Academy of Radio Studies



  • Money & Careers

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Current progress and frontiers in three-dimensional macroporous carbon-based aerogels for electromagnetic wave absorption: a review

Nanoscale, 2024, Advance Article
DOI: 10.1039/D4NR03738C, Review Article
Han Ding, Bo Hu, Yu Wang, Yunchen Du
This article provides a timely review on the construction of three-dimensional macroporous carbon-based aerogels and their application in the field of electromagnetic absorption.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Sails strong, but wavers a bit! Samsung Galaxy A55 review

Premium build, familiar UI enough to win you over?




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Five watches that made waves at Geneva Watch Days 2024

With 52 brands and their 100 watches, the recently concluded Geneva Watch Days puts the spotlight on new trends in horology




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Covid second wave: Lessons learnt

Here is what I have learnt during the second wave of the Covid-19 pandemic




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Fifth Indian Open of Surfing: Catch the waves in Mangaluru from May 31

The event, organized by the Surfing Swami Foundation and hosted by the Mantra Surf Club, will feature top Indiansurfers competing in various categories




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Can single-cell genomics lead to a new wave of drug targets? Celsius Therapeutics thinks so

The start-up, based on the work of Broad Institute scientist Aviv Regev, has raised $65 million to develop therapies for cancer and autoimmune disease




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Making waves: traveling musics in Hawaiʻi, Asia, and the Pacific / edited by Frederick Lau and Christine R. Yano

Lewis Library - ML3917.A78 M35 2018




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Reflection in the waves: the interdividual observer in a quantum mechanical world / Pablo Bandera

Dewey Library - QC174.12.B35525 2019




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Wave of the future: Terahertz chips a new way of seeing through matter

Princeton University researchers have drastically shrunk the equipment for producing terahertz — important electromagnetic pulses lasting one millionth of a millionth of a second — to the size of a microchip. The simpler, cheaper generation of terahertz has potential for advances in medical imaging, communications and drug development.




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Asian pollution, heat waves worsen US smog

An influx of pollution from Asia in the western United States and more frequent heat waves in the eastern U.S. are responsible for the persistence of smog in these regions over the past quarter century despite laws curtailing the emission of smog-forming chemicals from automobile tailpipes and factories.




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Unwavering support

Subic Bay, Philippines :: Logos Hope’s Official Opening in Subic Bay is blessed by the attendance of pastors who have stood with the ship’s ministry since its first visit.




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Eco Wave to Raise $5 Million to Accelerate Ocean Energy Plans

Eco Wave Power, based in Israel, plans to raise $5 million by the end of the year to further develop its technology and projects that harness the power of the ocean to generate electricity.




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Marine Energy Making Waves on Both Sides of the Pond

In recent months, a number of initiatives aimed at speeding up the development of the wave energy sector have been launched in the U.S. and Europe. As part of the ongoing work to establish a viable United States wave energy industry, the National Renewable Energy Laboratory (NREL) and Sandia National Laboratories (SANDIA) are working on the creation of a sophisticated open-source modeling tool known as WEC-Sim — and the U.S. Department of Energy is also enlisting the coding community to help in its development. Meanwhile, the European WavePOD project is an industry-wide initiative that aims to solve the problem of converting captured wave energy into electricity by creating a "standardised self-contained offshore electricity generator for the wave industry."




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Wave and Tidal Energy in 2015: Finally Emerging from the Labs

Technologies to harness wave and tidal power have been under development for over 40 years, but up until quite recently the center of technology development has been in Europe, where the resource intensity is greater than the United States’ coasts. However, in an effort to nurture the country’s sector, the U.S. Department of Energy’s Water Power Program has invested in a broad portfolio of technologies and Alison Labonte, DOE Marine and Hydrokinetic Technology Manager, revealed that it has recently increased its focus on “innovative, game changing technologies that utilize the most abundant marine resources and that have the greatest potential for achieving economic viability.”




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Wave Energy Week Will Mix Marine Energy Developers with Traditional Hydropower

Oregon Gov. Kate Brown, Democrat, has proclaimed “July 13-17, 2015 to be Oregon Wave Week in Oregon and encourages all Oregonians to join in this observance.”

 




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Carnegie Wave Energy to change name to Carnegie Clean Energy

Carnegie Wave Energy Ltd., in a press release on Nov. 1, announced it intends to change its name to Carnegie Clean Energy Ltd. (CCE).
 




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Health Ministry deputy chief: Second coronavirus wave in summer expected


Deputy Director-General of the Health Ministry Itamar Grotto insisted that despite improvements in coronavirus conditions around the country, we must be prepared for a second wave in summer.




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Seoul closes bars, clubs over fears of second coronavirus wave

Health authorities have warned of a further spike in infections.




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South Korea's Moon warns of COVID-19 second wave as cases rebound

South Korea warned of a second wave of the new coronavirus on Sunday as infections rebounded to a one-month high, just as the authorities were starting to ease some pandemic restrictions.




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South Korea's Moon warns of COVID-19 second wave as cases rebound

South Korea warned of a second wave of the new coronavirus on Sunday as infections rebounded to a one-month high, just as the authorities were starting to ease some pandemic restrictions.




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Lessons learned: what Australia needs to do to avoid a second Covid-19 wave

Experts say to prevent future outbreak clusters, workers need to have job safety if they are feeling sick and unable to work

Improvements in communication, personal protective equipment training, initial infection responses and social distancing have emerged as key areas of improvement if Australia is to avoid a second wave of coronavirus infections after lockdowns ease.

While the government has linked the uptake of its Covidsafe tracing app to a return to normal, the chief medical officer, Brendan Murphy, in April identified the bolstering of health authorities’ ability to respond to and contain localised clusters as an essential step to reassessing measures.

Continue reading...




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INDIAN BORN BRITISH POET MAKE WAVES WITH HIS POETRY

 

 

     The last three decades revealed a new phenomenon in the field of English literature. More and more Indian, Chinese and African origin...




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How to surf the new wave of globalisation (OECD Education Today Blog)

Globalisation is connecting people, cities, countries and continents, bringing together a majority of the world’s population in ways that vastly increase our individual and collective potential, and creating an integrated market in products and services.




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The people's airwaves, but controlled


Seventeen years after the Supreme Court ruled that the government cannot restrict content on radio, it remains impossible for independent news to be aired on radio channels. Navya P K reports.




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Riding a wave of social surfing

Along the TN and Kerala coast, fishermen turned surf instructors are helping local boys stay in school and off drugs.




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Post-reopening cases in South Korea, Germany spark 2nd wave fears

Worldwide, the virus is confirmed to have infected nearly 4 million people and killed more than 276,000, according to a tally by Johns Hopkins University based on data reported by governments.




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Second Wave: Reopenings Bring New Cases in South Korea, Flares Coronavirus Fears in Italy

Around the world, the US and other hard-hit countries are wrestling with how to ease curbs on business and public activity without causing the virus to come surging back.




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New wave of Swine flu could sicken millions

As countries grapple with the Swine flu, experts have warned that a new wave of the deadly virus is ready and could sicken millions.




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The principles of electric wave telegraphy / by J.A. Fleming

Archives, Room Use Only - TK5741.F64 1908




wave

The creation of scientific effects: Heinrich Hertz and electric waves / Jed Z. Buchwald

Archives, Room Use Only - QC661.B85 1994




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On a method of measuring the contour of electric waves passing through telegraph lines / by Robert Sabine

Archives, Room Use Only - TK5451.S33 1876




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The story of the first trans-atlantic short wave message: proceedings of the Radio Club of America inc.: 1BCG commemorative issue, October 1950.

Archives, Room Use Only - TK6540.S86 1950




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The A.B.C. of wireless telegraphy: a plain treatise on Hertzian wave signaling, embracing theory, methods of operation, and how to build various pieces of the apparatus employed / by Edward Trevert [pseud.]

Archives, Room Use Only - TK5741.T74 1902




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Atmospheric tidal waves maintain Venus' super-rotation




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Microwave steriliser to disintegrate coronavirus developed




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Post-reopening cases in South Korea, Germany spark 2nd wave fears - Times of India

Post-reopening cases in South Korea, Germany spark 2nd wave fears - Times of India




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X-ray free-electron laser wavefront sensing using the fractional Talbot effect

Wavefront sensing at X-ray free-electron lasers is important for quantitatively understanding the fundamental properties of the laser, for aligning X-ray instruments and for conducting scientific experimental analysis. A fractional Talbot wavefront sensor has been developed. This wavefront sensor enables measurements over a wide range of energies, as is common on X-ray instruments, with simplified mechanical requirements and is compatible with the high average power pulses expected in upcoming X-ray free-electron laser upgrades. Single-shot measurements were performed at 500 eV, 1000 eV and 1500 eV at the Linac Coherent Light Source. These measurements were applied to study both mirror alignment and the effects of undulator tapering schemes on source properties. The beamline focal plane position was tracked to an uncertainty of 0.12 mm, and the source location for various undulator tapering schemes to an uncertainty of 1 m, demonstrating excellent sensitivity. These findings pave the way to use the fractional Talbot wavefront sensor as a routine, robust and sensitive tool at X-ray free-electron lasers as well as other high-brightness X-ray sources.




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A modulation wave approach to the order hidden in disorder

A modulation wave approach is used to interpret the coupled longer range as well as truly short range order hidden in the highly structured diffuse intensity distributions of three representative such systems. The longer range as well as the truly short range order simultaneously encoded in such highly structured diffuse intensity distributions is highlighted.





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Energetics of interactions in the solid state of 2-hydroxy-8-X-quinoline derivatives (X = Cl, Br, I, S-Ph): comparison of Hirshfeld atom, X-ray wavefunction and multipole refinements

In this work, two methods of high-resolution X-ray data refinement: multipole refinement (MM) and Hirshfeld atom refinement (HAR) – together with X-ray wavefunction refinement (XWR) – are applied to investigate the refinement of positions and anisotropic thermal motion of hydrogen atoms, experiment-based reconstruction of electron density, refinement of anharmonic thermal vibrations, as well as the effects of excluding the weakest reflections in the refinement. The study is based on X-ray data sets of varying quality collected for the crystals of four quinoline derivatives with Cl, Br, I atoms and the -S-Ph group as substituents. Energetic investigations are performed, comprising the calculation of the energy of intermolecular interactions, cohesive and geometrical relaxation energy. The results obtained for experimentally derived structures are verified against the values calculated for structures optimized using dispersion-corrected periodic density functional theory. For the high-quality data sets (the Cl and -S-Ph compounds), both MM and XWR could be successfully used to refine the atomic displacement parameters and the positions of hydrogen atoms; however, the bond lengths obtained with XWR were more precise and closer to the theoretical values. In the application to the more challenging data sets (the Br and I compounds), only XWR enabled free refinement of hydrogen atom geometrical parameters, nevertheless, the results clearly showed poor data quality. For both refinement methods, the energy values (intermolecular interactions, cohesive and relaxation) calculated for the experimental structures were in similar agreement with the values associated with the optimized structures – the most significant divergences were observed when experimental geometries were biased by poor data quality. XWR was found to be more robust in avoiding incorrect distortions of the reconstructed electron density as a result of data quality issues. Based on the problem of anharmonic thermal motion refinement, this study reveals that for the most correct interpretation of the obtained results, it is necessary to use the complete data set, including the weak reflections in order to draw conclusions.




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Cascading transitions toward unconventional charge density wave states in the quasi-two-dimensional monophosphate tungsten bronze P4W16O56

Single crystals of the m = 8 member of the low-dimensional monophosphate tungsten bronzes (PO2)4(WO3)2m family were grown by chemical vapour transport technique and the high crystalline quality obtained allowed a reinvestigation of the physical and structural properties. Resistivity measurements revealed three anomalies at TC1 = 258 K, TC2 = 245 K and TC3 = 140 K, never observed until now. Parallel X-ray diffraction investigations showed a specific signature associated with three structural transitions, i.e. the appearance of different sets of satellite reflections below TC1, TC2 and TC3. Several harmonics of intense satellite reflections were observed, reflecting the non-sinusoidal nature of the structural modulations and a strong electron–phonon coupling in the material. These transitions could be associated with the formation of three successive unconventional charge density wave states.




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Shack–Hartmann wavefront sensors based on 2D refractive lens arrays and super-resolution multi-contrast X-ray imaging

Different approaches of 2D lens arrays as Shack–Hartmann sensors for hard X-rays are compared. For the first time, a combination of Shack–Hartmann sensors for hard X-rays (SHSX) with a super-resolution imaging approach to perform multi-contrast imaging is demonstrated. A diamond lens is employed as a well known test object. The interleaving approach has great potential to overcome the 2D lens array limitation given by the two-photon polymerization lithography. Finally, the radiation damage induced by continuous exposure of an SHSX prototype with a white beam was studied showing a good performance of several hours. The shape modification and influence in the final image quality are presented.




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Active star-forming galaxy M82 in three wavelengths

This image shows the active star-forming galaxy M82 in three wavelengths: UV (blue), near-infrared (green) and far-infrared (red). New research indicates that even in the […]

The post Active star-forming galaxy M82 in three wavelengths appeared first on Smithsonian Insider.




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Gemini reveals a gravitational wave source in hiding

Einstein’s Theory of General Relativity predicts that accelerated masses emit gravitational waves, or ripples in space-time. Even though gravitational waves have yet to be detected […]

The post Gemini reveals a gravitational wave source in hiding appeared first on Smithsonian Insider.