The uneven distribution of renewable energy resources and different levels of development have produced a large amount of abandoned electricity. Hydrogen production from the electrolysis of water can effectively consume abandoned electricity. And hydrogen energy has been hailed as the ultimate energy source in the 21st century. However, the many branches of the industry have made the overall layout

Traditional cold ironing allows ships to shut down their auxiliary engines, during the berthing time, and to be powered by an on-shore power supply. Traditionally the energy demand is satisfied by electricity form the national grid. Alternatively, a local energy production increases the energetic self-sufficiency of the port areas and reduces the pressure on the national grid with continuous peaks

Nuclear power plants are expected to make an important contribution to the decarbonisation of electricity supply alongside variable renewable generation, especially if their operational flexibility is enhanced by coupling them with thermal energy storage. This paper presents a system modelling approach to identifying configurations of flexible nuclear plants that minimise the investment and operation

In this paper the problem of hydraulic fracture in elasto-plastic pressure sensitive material is analyzed. The superdislocation model is used to approximate the plastic deformations in the crack tip area. This model is employed to derive a new crack propagation condition based on the concept of effective fracture toughness. A parametric analysis supported by FEM simulations is conducted to verify the

We produce minimal integrity bases for both isotropic and hemitropic invariant algebras (and more generally covariant algebras) of most common bidimensional constitutive tensors and — possibly coupled — laws, including piezoelectricity law, photoelasticity, Eshelby and elasticity tensors, complex viscoelasticity tensor, Hill elasto-plasticity, and (totally symmetric) fabric tensors up to twelfth-order

In this work we propose a strategy based on coordinate transformation to cloak Rayleigh waves. Rayleigh waves are in-plane elastic waves which propagate along the free surface of semi-infinite media. They are governed by Navier equations that retain their form for an in-plane arbitrary coordinate transformation x=Ξ(X), upon choosing the specific kinematic relation U(Ξ(X))=u(x) between displacement

Hematocrit, defined as the volume percentage of red blood cells in blood, is an important indicator of human health status because it involves the capability of blood to deliver oxygen. The present work aims to analyze and predict the hematocrit distribution in microvascular networks from the direct simulations of cellular blood flow. The networks are geometrically complex, composed of bifurcations

We present a nonlinear, geometrically exact, and thermodynamically consistent framework for modeling special Cosserat rods with evolving natural configurations. In contrast to the common usage of the point-wise Clausius–Duhem inequality to embody the Second Law of Thermodynamics, we enforce the strictly weaker form that the rate of total entropy production is non-decreasing. The constitutive relations

Andrew Robinson reviews five of the best science picks.

The energy drink ingredient offers striking health benefits in mice, monkeys and worms. But more work is needed to investigate its link with ageing.

Goopy ‘biofilms’ normally serve as a protective shield, but Vibrio cholerae uses them to kill immune cells.

The high cost of ‘reformatting’ prompts a call for journals to change their requirements.

Decades of data show the widespread belief that morality is waning is an illusion. Plus, the first images of the tallest tree in the Amazon and a ‘lost world’ of previously unknown microorganisms that once dominated complex life on Earth.

Chillers are reference technologies to meet the demand for space cooling in the tertiary and commercial sectors. Meantime, being power-to-cold technologies, they could increase the flexibility of these buildings in those contexts of a high share of electricity from renewable energy sources through new control strategies. To reliably assess the achievable energy savings in these novel applications,

Abstract not available

Vitamin B1 is widely applied in the healthcare and food industry as an antineuritic and antioxidant to maintain the normal functioning of nerve conduction, the heart, and the gastrointestinal tract. This study reports on an integrated eight-step continuous-flow synthesis of vitamin B1 from commercially available 2-cyanoacetamide. The proposed continuous-flow process is based on advances in chemistry

All-perovskite tandem solar cells promise higher power-conversion efficiency (PCE) than single-junction perovskite solar cells while maintaining a low fabrication cost1–3. However, their performance is still largely constrained by the subpar performance of mixed Pb-Sn narrow-bandgap perovskite subcells, mainly due to a high trap density on the perovskite film surface4–6. Although heterojunctions with

Called MINFLUX, the super-resolution method allows researchers to track molecules under cellular conditions.

Entry of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) into host cells depends on refolding of the virus-encoded spike protein from a prefusion conformation, metastable after cleavage, to a lower energy, stable postfusion conformation1,2. This transition overcomes kinetic barriers for fusion of viral and target cell membranes3,4. We report here a cryo-EM structure of the intact postfusion

After gulls switched their focus from southern right whale mothers to calves, scientists recorded a drop in calf survival.

Digits made of soft materials tap out a melody from the composer’s Ninth Symphony on a keyboard.

Hear the biggest stories from the world of science | 7 June 2023

What recent film riveted you? What if your next grant proposal engaged reviewers as effectively as that film grabbed you?

Factors that control lithium-filament initiation and growth in batteries.

Analysis of molecular fossils sheds light on how sterol pathways evolved.

Fat-like compounds in ancient rocks point to a vast array of previously unknown microorganisms that once dominated complex life on Earth.

Hints that vaccination against shingles might lower the risk of dementia by 20%. Plus, COVID waves could hit China every six months and cheetah deaths in India shine a spotlight on a controversial conservation project.

A deep-learning approach to improving computer code.

The technology developed by DeepMind that plays Go and chess can also help to write code.

An unconventional material is hard as ceramic, deformable as rubber and mouldable as plastic.

Identification of a population of neurons in the brains of female mice that drives hostility towards pups.

DNA damage drives premalignant immune cells in skin to form leukaemia.

Surveys show people around the world have believed for decades that morals are decaying — but other survey data contradict that perception.

Genomic data from archaeological sites across Morocco.

An experiment located on seawall structures suggests that species richness is determined mostly by immigration.