Correction: Yau et al. Risk Factors for Early Return Visits to the Emergency Department in Patients Presenting with Nonspecific Abdominal Pain and the Use of Computed Tomography Scan. Healthcare 2021, 9, 1470

The authors would like to make corrections to their published paper [...]

A camphene-camphor-polymer composite material for the production of superhydrophobic absorbent microporous foams

In a recently published paper (doi.org/10.3390/molecules26113116) on self-propelled motion of objects on the water surface, we described a novel surface-active plastic material obtained by dissolution of camphor and polypropylene in camphene at 250 $$^\circ$$ ∘ C. The material has wax-like mechanical properties, can be easily formed to any moldable shape, and allows for longer and more stable self-propelled motion if compared with pure camphor or pure camphene or of a camphene-camphor wax. Here we use scanning electron microscopy to visualize and characterize the microporous structure of the solid polypropylene foam formed in the plastic for different polypropylene contents. The topology of foams remaining in the material after camphor and camphene molecules have been removed through evaporation or dissolution is similar to polypropylene foams obtained using thermally-induced phase separation. We show that the foams have a superhydrophobic surface but strongly absorb non-polar liquids, and suggest an array of potential scientific and industrial applications.

Correction: Kim, H.; Park, S. Coupled Level-Set and Volume of Fluid (CLSVOF) Solver for Air Lubrication Method of a Flat Plate. J. Mar. Sci. Eng. 2021, 9, 231

The authors would like to make a correction to their published paper [...]

Os estudos de Thomas Young sobre a acomodação ocular: análise do episódio e tradução comentada do texto “Observations on vision” (1793)

Neste artigo, apresentamos uma tradução comentada para o português do texto “Observations on vision” (1793), de Thomas Young (1773-1829), seu primeiro trabalho publicado nas Philosophical Transactions da Royal Society. Nesse texto, Young discutiu algumas teorias e ideias sobre a acomodação visual existentes até sua época. Após apontar diversas falhas nessas teorias, ele propôs a sua, baseada na existência de uma musculatura no cristalino responsável especificamente por esse mecanismo. A tradução é precedida por três seções, em que aspectos da história da anatomia ocular e das teorias anteriores para a acomodação visual são abordados, a fim de contextualizar a leitura do material traduzido.Thomas Young’s studies on visual accommodation: an analysis of the episode and a commented Portuguese translation of his “Observations on vision”(1793)AbstractIn this paper, we present a commented Portuguese translation of Thomas Young’s (1773-1829) “Observations on vision” (1793), his first published paper in Royal Society’s Philosophical Transactions. In this article, Young discussed some previous theories and ideas on visual accommodation up to his days. After pointing out the flaws of these theories, he proposed his own: muscles in the crystalline lens were responsible for this mechanism. The translation is preceded by three sections in which we comment on aspects of the history of eye anatomy and of the previous theories for visual accommodation, in order to contextualize the reading of the translated material.Keywords: Visual accommodation; Optics; Vision; Thomas Young; Light.

Correction: Shoaib et al. Neuroprotective Effects of Dried Tubers of Aconitum napellus. Plants 2020, 9, 356

We are sorry to report that some images in Figure 1 reported in our recently published paper [...]

Correction: Tantlevskij et al. Network Analysis of the Interaction between Different Religious and Philosophical Movements in Early Judaism. Philosophies 2021, 6, 2

The authors would like to make the following corrections to the published paper [...]

Addendum: Hackney, A.C.; Willett, H.N. Testosterone Responses to Intensive, Prolonged Endurance Exercise in Women. Endocrines 2020, 1, 119–124

It has been brought to our attention that the Ethics Committee and approval code were missing in the Materials and Methods Section of our published paper [...]

The technical impacts of the carbon tax in China

Despite the significant impacts of technology on the socioeconomic effects of climate policies, many previous researchers neglected the induced technical impacts and thus resulted in biased evaluations of climate policies. Hence, it is important that the induced technology should be endogenized in the policy evaluation framework. The purpose of this paper is the quantification of the technical impacts of the Chinese carbon tax using a Computable General Equilibrium (CGE) model. The technical impacts are denoted by the induced technological change (ITC), which is a function of the energy-use efficiency (EUE), energy-production efficiency (EPE), and nonenergy-production efficiency (ENE). The carbon tax will increase the energy cost share because of the internalisation of the abatement costs. This paper empirically shows that the carbon tax will decrease the energy cost share and production efficiency but increase the energy use and nonenergy production efficiency. Under the carbon tax, the ITC will decrease the energy use and production efficiency but increase the nonenergy production efficiency. The ITC will increase the RGDP, decrease the household welfare, and increase the average social cost of carbon (ASCC). This finding implies that the ITC of the carbon tax is biased towards the technical progress of nonenergy sectors; the emission abatement will become costlier under the ITC impacts. Although the quantification method of the technical impacts was from an existing published paper, the CGE analysis of the ITC impacts of the carbon tax in China is original in this paper.

Correction: Babo et al. Characterization and Long-Term Stability of Historical PMMA: Impact of Additives and Acrylic Sheet Industrial Production Processes. Polymers 2020, 12, 2198

The authors wish to make a change to the published paper [...]