Contents of volumes in this serial

This chapter provides a detailed overview of the contents of the whole volume. Firstly, the chapter specifies which of Bolzano’s writings are most relevant to his conception of grounding and explains by which criteria texts and excerpts were selected for this volume. Secondly, the chapter specifies the translators of the selected writings by Bolzano. Thirdly, the chapter explains how the research papers were assembled so as to cover a broad variety of aspects of Bolzano’s theory of grounding, discussing its historical connections (see the papers by Marko Malink, Kevin Mulligan on Husserl), its logical details (see the papers by Kit Fine, Mark Textor, and Francesca Poggiolesi), and a range of applications in ethics, mathematics, physics, and ontology (see the papers by Edgar Morscher, Paul Rusnock, Marc Lange, and Benjamin Schnieder).

Contents of volume 9, subject index, and contents of previous volumes

The Civitates orbis terrarum or the “Braun & Hogenberg”, published in six volumes in Cologne between 1572 and 1617, is the most famous of the early town atlases. Although it had no comparable precedent, it immediately answered a great public demand, because social, political and economic life at that time was concentrated in the cities. Apart from that, the pictorial style of the plans and views appealed very much to the uneducated public.Each of the six volumes is a distinct entity, containing plans of towns of the whole of Europe (and sometimes also of towns outside Europe). When a more recent plan of a town was acquired, it was included in one of the later volumes without changing the contents of the earlier volume. In fact, the contents of a volume has never been changed at all. The authors of the work are Georg Braun (Bruin), Frans Hogenberg and Simon van den Neuvel (Novellanus). This paperdiscusses the choice of towns depicted and the distribution of these towns in Europe, the way the towns were depicted (plan, bird’s-eye view, profile, landscape) and the information text given on the towns.

The induced polarization (IP) method plays an important role in the detection of seafloor polymetallic sulfide deposits. Numerical simulations based on the Poisson–Nernst–Planck equation and the Maxwell equation were performed. The effects of mineralized structures on the IP and electrical conductivity properties of seafloor sulfide-bearing rocks were investigated. The results show that total chargeability increases linearly as the volume content of disseminated metal sulfides increases when the volume content is below 20%. However, total chargeability increases nonlinearly with increasing volume content in vein and massive metal sulfides when the volume content is below 30%. The electrical resistivity of disseminated metal sulfides mainly depends on the conductivity of pore water. The electrical resistivity of vein and massive sulfides mainly depends on the volume content and the length of sulfides. Increase in the aspect ratio (0.36 to 0.93) of seafloor massive sulfides causes relaxation time constants and total chargeability to decrease. Relaxation time constants and total chargeability also decrease with increase in the tortuosity of seafloor vein sulfides from 1.0 to 1.38. This study is of great value for the electrical survey of seafloor polymetallic sulfide deposits.

Effect of polypropylene fiber on frost resistance and carbonation resistance of manufactured sand concrete

Free volume evolution dominated by glass forming ability determining mechanical performance in Zr Ti65-Be27.5Cu7.5 metallic glasses

Electrical-based delamination crack monitoring in composites using z-pins

Pitch is a viscoelastic polymer material consisting of aromatic hydrocarbons. It is used to produce carbon fibers with sheet-like crystal structures. The aim of the work presented in this paper was to evaluate the effects of pitch-based short carbon fibers on the workability, unit weight, and air content of freshly mixed mortar composite. Experimental investigation was carried out on five different types of mortar composite, including a control mortar. Four mortar composites were prepared including pitch-based short carbon fibers with 1–4% volume contents. The fresh mortar composites were tested to determine their slump, inverted slump cone flow (flow time, mass flow, and volume flow), unit weight, and air content. In addition, the correlation between the slump and flow time of various mortar composites was determined. It was found that the slump decreased with the increasing volume content of carbon fibers. The flow time of mortar composite increased, and therefore its mass flow and volume flow decreased with a greater volume content of carbon fibers. The slump was strongly correlated with the flow time, with a correlation coefficient of 0.9782. Furthermore, the unit weight of the fresh mortar composite decreased due to the incorporation of carbon fibers. However, amongst the different carbon fiber reinforced mortar composites, the mortar with 3% fiber volume content provided the highest unit weight. The air content results were consistent with the unit weight results. The change in air content of various mortar composites followed a trend reciprocal to that of unit weights. When the overall effects of carbon fibers were compared, it was observed that the fiber volume content higher than 3% resulted in a significantly low workability and provided a much lower unit weight with greater entrapped air content.

The effect of 1-propanol on structure and hydrothermal stability of MSU-4 silica spheres

Pitch is a viscoelastic polymer material consisting of aromatic hydrocarbons. It is used to produce carbon fibers with sheet-like crystal structures. The aim of the work presented in this paper was to evaluate the effects of pitch-based short carbon fibers on the workability, unit weight, and air content of freshly mixed mortar composite. Experimental investigation was carried out on five different types of mortar composite, including a control mortar. Four mortar composites were prepared including pitch-based short carbon fibers with 1–4% volume contents. The fresh mortar composites were tested to determine their slump, inverted slump cone flow (flow time, mass flow, and volume flow), unit weight, and air content. In addition, the correlation between the slump and flow time of various mortar composites was determined. It was found that the slump decreased with the increasing volume content of carbon fibers. The flow time of mortar composite increased, and therefore its mass flow and volume flow decreased with a greater volume content of carbon fibers. The slump was strongly correlated with the flow time, with a correlation coefficient of 0.9782. Furthermore, the unit weight of the fresh mortar composite decreased due to the incorporation of carbon fibers. However, amongst the different carbon fiber reinforced mortar composites, the mortar with 3% fiber volume content provided the highest unit weight. The air content results were consistent with the unit weight results. The change in air content of various mortar composites followed a trend reciprocal to that of unit weights. When the overall effects of carbon fibers were compared, it was observed that the fiber volume content higher than 3% resulted in a significantly low workability and provided a much lower unit weight with greater entrapped air content.

The COVID-19 pandemic has exacerbated environmental challenges due to the widespread use of disposable face masks (DFMs), leading to significant microplastic pollution as millions of masks are discarded daily. This study introduces a novel recycling method that converts DFMs into fibers, subsequently added to concrete to enhance its structural properties. The process involves preliminary five-day sunlight disinfection of DFMs to ensure they are free from COVID-19. We examined the effects of these recycled face mask fibers (RFMFs) on the strength of concrete through tests on 270 samples, incorporating varying volume contents (0%, 0.15%, 0.30%, and 0.45%) and lengths (20 mm, 30 mm, and 40 mm) of RFMFs, each 5 mm in width. The specimens underwent curing for different durations (3, 7, and 28 days). The results indicated significant improvements in concrete strength with RFMF additions, particularly after three days of curing. An optimal increase of 17.47% in compressive strength was observed at a 0.15% volume content and 20 mm length of RFMF. Furthermore, an increase of 18.52% in splitting tensile strength was noted at a 0.15% volume content and 40 mm length of RFMF, while a 36.62% enhancement in flexural strength was achieved with a 0.45% volume content and 30 mm length. This research highlights an innovative approach to strengthen concrete early on, providing a practical solution to mitigate environmental impact and effectively managing waste from disposable face masks.

Tensile behavior of fiber reinforced cement mortar using wastes of electrical connections wires and galvanized binding wires

Pitch is a viscoelastic polymer material consisting of aromatic hydrocarbons. It is used to produce carbon fibers with sheet-like crystal structures. The aim of the work presented in this paper was to evaluate the effects of pitch-based short carbon fibers on the workability, unit weight, and air content of freshly mixed mortar composite. Experimental investigation was carried out on five different types of mortar composite, including a control mortar. Four mortar composites were prepared including pitch-based short carbon fibers with 1–4% volume contents. The fresh mortar composites were tested to determine their slump, inverted slump cone flow (flow time, mass flow, and volume flow), unit weight, and air content. In addition, the correlation between the slump and flow time of various mortar composites was determined. It was found that the slump decreased with the increasing volume content of carbon fibers. The flow time of mortar composite increased, and therefore its mass flow and volume flow decreased with a greater volume content of carbon fibers. The slump was strongly correlated with the flow time, with a correlation coefficient of 0.9782. Furthermore, the unit weight of the fresh mortar composite decreased due to the incorporation of carbon fibers. However, amongst the different carbon fiber reinforced mortar composites, the mortar with 3% fiber volume content provided the highest unit weight. The air content results were consistent with the unit weight results. The change in air content of various mortar composites followed a trend reciprocal to that of unit weights. When the overall effects of carbon fibers were compared, it was observed that the fiber volume content higher than 3% resulted in a significantly low workability and provided a much lower unit weight with greater entrapped air content.

Pitch is a viscoelastic polymer material consisting of aromatic hydrocarbons. It is used to produce carbon fibers with sheet-like crystal structures. The aim of the work presented in this paper was to evaluate the effects of pitch-based short carbon fibers on the workability, unit weight, and air content of freshly mixed mortar composite. Experimental investigation was carried out on five different types of mortar composite, including a control mortar. Four mortar composites were prepared including pitch-based short carbon fibers with 1–4% volume contents. The fresh mortar composites were tested to determine their slump, inverted slump cone flow (flow time, mass flow, and volume flow), unit weight, and air content. In addition, the correlation between the slump and flow time of various mortar composites was determined. It was found that the slump decreased with the increasing volume content of carbon fibers. The flow time of mortar composite increased, and therefore its mass flow and volume flow decreased with a greater volume content of carbon fibers. The slump was strongly correlated with the flow time, with a correlation coefficient of 0.9782. Furthermore, the unit weight of the fresh mortar composite decreased due to the incorporation of carbon fibers. However, amongst the different carbon fiber reinforced mortar composites, the mortar with 3% fiber volume content provided the highest unit weight. The air content results were consistent with the unit weight results. The change in air content of various mortar composites followed a trend reciprocal to that of unit weights. When the overall effects of carbon fibers were compared, it was observed that the fiber volume content higher than 3% resulted in a significantly low workability and provided a much lower unit weight with greater entrapped air content.

Selective laser melting of TiC reinforced 316L stainless steel matrix nanocomposites: Influence of starting TiC particle size and volume content