Product Expansion Research Articles

Safety assurance and nutritional quality enhancement of Phyllospora comosa biomass using hydrothermal treatment derived ensemble machine learning models

One of the major barriers to the mass industrial utilisation of brown seaweeds as food sources stem from the food safety risks associated with their iodine and arsenic concentrations, which typically exceed regulatory limits. Hydrothermal treatments might effectively reduce the high iodine and arsenic concentration of Phyllospora comosa below the Australian maximum residual limits (iodine = 1 mg/g and arsenic = 0.00667 mg/g; dry weight) set for brown seaweeds. The experimental hydrothermal treatments dictated that the 82 °C–250 s treatment reduced the iodine concentration from 2.76 mg/g to 0.88 mg/g (68% reduction) and arsenic concentration from 0.01693 mg/g to 0.00965 mg/g (43% reduction). Machine learning models predicted that blanching at 100 °C for ∼4 minutes will reduce the arsenic concentration below its maximum residual limit. Additive log-ratio transformations showed that around 50% (dw) of the hydrothermally treated Phyllospora comosa samples were leached out during the highest treatment intensity, 82 °C–250 s. Even though, a half of the biomass is lost, hydrothermally treated Phyllospora comosa products are safer for human consumption and thus may permit the expansion of seaweed production and consumption in Australia.

Multi-Criteria Decision Analysis to Evaluate the Geographic Potential of Alternative Photovoltaic Types

This paper contributes to the expansion of green energy production, which is being pursued in order to mitigate climate change and carbon emissions from energy production. It addresses the delineation of areas that are suitable for the application of photovoltaics in the context of agricultural areas, water bodies, and parking spaces. Three specific photovoltaic types are examined in order to find out which criteria influence their geographic potential and whether spatial multi-criteria decision analysis methods are suitable for identifying suitable areas. The proposed approach consists of four steps: (1) collecting factors through expert interviews and questionnaires; (2) mapping the criteria to the spatial datasets; (3) deriving weighted scores for individual criteria through expert interviews; (4) applying the multi-criteria decision analysis method to compute and aggregate the final scores. We test our methodology at selected sites in the state of Styria, Austria. The test sites represent the topographical characteristics of the state and are about 5% of the size of Styria, approximately 820 km2. The key contributions are a weighted set of criteria that are relevant for the geographic potential of alternative photovoltaic types and the developed methodology to determine this potential.

The Utilization Of Field Snails Into Soy Sauce Ingredients Enzymatically Regardless Of The Physical Quality

Rice soy sauce is a thick liquid made from snail meat juice . Soy sauce can be made in 2 ways, namely, traditionally/fermentation and by adding enzymes. Making soy sauce does not require a particular type of snail . In this research, we will study the use of rice snails to make rice snail sauce enzymatically. The aim of this research is to determine the effect of adding crushed pineapple tubers and fermentation time on the physical, chemical and organoleptic quality of the rice snail soy sauce produced. Proteolytic enzymes can break down and decompose proteins. Bromelain proteolytic enzymes can break down protein molecules into amino acids, enzymes that hydrolyze peptide bonds in the middle. This research used a completely randomized design (CRD) with a factorial pattern with 2 factors and 3 replications. The first factor was the addition of crushed pineapple tubers (10%), (15%), and (20%) and the second factor was the fermentation time (5.7 and 9 days). The results of this research show that when increasing the number of workers from 4 to 6 people, variable costs increase, but the number of rice snails produced increases , therefore the cost per bottle produced (marginal variable coast) decreases. The tendency to increase productivity often occurs when companies initiate production expansion. T et fire This is not the case if the company continues to expand production by continuing to increase the workforce employed.

Ethnobotanical study of medicinal plants used to manage human ailments in Lay Gaint District, South Gondar Zone, Amhara Region, Northwestern Ethiopia

The aim of this work is to document and record the use of medicinal plants to treat various ailments in the study area. A total of 84 informants, consisting of 54 men and 30 women, between 35 and 80 years of age were chosen. Additionally, 20 key informants were deliberately selected for their expertise. Data were collected through face-to-face interviews, group discussions, and guided field walks using semi-structured interview questions. Ethnobotanical data were analyzed using quantitative analytical tools such as preference ranking, direct matrix ranking, fidelity level and informant consensus factor. Forty-six medicinal plants belonging to 41 genera and 33 families were collected and identified. Brassicaceae, Ranunculaceae, and Polygonaceae had the highest abundance of medicinal plants used to treat various diseases in the study area. Most of the medicinal plants were herbs (43 %), followed by shrubs (35 %). The study revealed that leaves (45.7 %) were the most frequently used plant parts in the preparation of remedies. The most common mode of administration was oral ingestion (61 %), followed by dermal application (30 %). Zingiber officinale Roscoe and Allium sativum L.had the highest preference rank, whereas Croton macrostachyus Hochst. ex Delile was identified as the most popular medicinal plant due to its multipurpose use. while the value of fidelity level (FL) for medicinal plants in the study ranged from 34 % to 94 %. The study also identified several threats to medicinal plants in the study area, including charcoal production, overgrazing, and agricultural expansion. To prevent the eradication of these medicinal plants, the involvement of local communities in the management and conservation of plant resources is crucial.

All OPEs invariant under the infinite symmetry algebra for gluons on the celestial sphere

S algebra is an infinite-dimensional Lie algebra, which is known to be the symmetry algebra of some gauge theories. It is a “colored version” of the w1+∞. In this paper, we write down all possible S-invariant (celestial) operator product expansions between two positive-helicity outgoing gluons and also find the Knizhnik-Zamolodchikov type null states for these theories. Our analysis hints at the existence of an infinite number of S-invariant gauge theories which include the (tree-level) maximally helicity-violating sector and the self-dual Yang-Mills theory. Published by the American Physical Society 2024

External debt burden and economic growth: evidence from Central Asia

ABSTRACT The main goal of this article is to analyse the effects of external debt accumulation on economic growth amongst Central Asian countries. We have applied a time-series methodology utilising annual data from 2000–2017 to show that external debt has had a negative and significant effect on economic growth in Central Asian countries. We found that debt overhang will cause a higher marginal tax rate on the future output of each country, thus leading to an investment slowdown and reducing output growth by limiting productivity expansion. Moreover, we can affirm that the negative effect of external debt is often associated with the poor level of institutions and governance of Central Asian countries.

Private welfare for workers. Corporate welfare at Fiat in the era of Vittorio Valletta (1946-1966)1

ABSTRACT Fiat (Fabbrica Italiana Automobili Torino) was for a good part of the twentieth century Italy’s largest industrial company. Historians and sociologists have extensively investigated its productive expansion in the automotive industry, as well as the leading role it played in introducing and applying Taylorist and Fordist techniques of mass production to the Italian manufacturing sector. The analysis of the organization of the social policies that the company established for its employees from the 1920s onward has been, however, less considered. Yet, the complex of welfare, recreational and cultural services made available to workers was so pervasive that it seems interesting to reconstruct its history and assess the impact it had on the lives of employees. It can be argued that the corporate welfare made up by the Turin company during the years when Vittorio Valletta led it (1946–1966) was an integral element of the Fordist model of mass production, aimed not only to counterbalance the strain of assembly line work with social benefits, but also to replicate in daily life the regimentation that office and factory workers experienced in the hours they spent in the mills.

Are Islamic Boarding School Cooperatives (Kopontren) Ready to Digitize? Study using the TRAM approach

Kopontren (koperasi pesantren) aims to maximize the economic potential of Islamic boarding schools in strengthening the economic empowerment. East Java has the third-highest number of pesantren, with 4.452 pesantren and 323.300 santri. With this amount, Kopontren has the potential to be a partner of UMKM in terms of production, consumption, and promotion, thereby contributing to the expansion of local products. Additionally, around 90.48% of Islamic Boarding School owned business that have self-managed or partnerships with the public. These enterprise units are potentially developed into kopontren. But, the fact that neither conventional nor sharia cooperative can be said to be optimal in carrying out their functions. Cooperatives faced a number of problems, including inadequate finance, a lack of skilled SDMs, failure to fulfill internal supervision criteria, and minimal use of digitalization. This study uses a quantitative approach. The purpose of this study is to analyze user readiness for implementing digitalization using the TRAM model in Kopontren, located in Jember. Because Jember is a district in East Java that has the most pesantren. The findings indicate that perceived usefullness and perceived ease of use influenced of digitalization in Islamic Boarding School Cooperative. Feelings of discomfort, insecurity, the ability to embrace innovation, and optimism have different effects on the perceived user of digitalization in kopontren. This research can be used to help the management of cooperatives, researchers, and governments establish digital systems in cooperatives, especially at Islamic Boarding School

Kenaf: Opportunities for an Ancient Fiber Crop

Hibiscus cannabinus (kenaf) is an annual fiber crop grown in warm seasons and known for its remarkable productivity; it has been cultivated worldwide for thousands of years as a fiber source. While every part of the plant can be utilized for some purpose, its primary significance lies in the diverse applications of its cellulosic fiber. Kenaf features a blend of long bast and short core fibers, rendering it suitable for various industrial uses. Initially utilized for cordage and livestock feed, kenaf’s applications have expanded over the last century to encompass its utilization as paper pulp, biocomposites, textiles, biomass energy, seed oil, filtration aids, industrial absorbents, and even as a component of potting medium or as a potential source of medicine. Although traditionally a niche crop, the discovery of its diverse applications positions kenaf for rapid expansion in production in the upcoming decades. This article aims to explore the manifold applications of kenaf, highlighting those with the greatest future potential and discussing those that hold promise for commercial-level application with additional research.

Phosphonoalamides Reveal the Biosynthetic Origin of Phosphonoalanine Natural Products and a Convergent Pathway for Their Diversification

AbstractPhosphonate natural products, with their potent inhibitory activity, have found widespread use across multiple industries. Their success has inspired development of genome mining approaches that continue to reveal previously unknown bioactive scaffolds and biosynthetic insights. However, a greater understanding of phosphonate metabolism is required to enable prediction of compounds and their bioactivities from sequence information alone. Here, we expand our knowledge of this natural product class by reporting the complete biosynthesis of the phosphonoalamides, antimicrobial tripeptides with a conserved N‐terminal l‐phosphonoalanine (PnAla) residue produced by Streptomyces. The phosphonoalamides result from the convergence of PnAla biosynthesis and peptide ligation pathways. We elucidate the biochemistry underlying the transamination of phosphonopyruvate to PnAla, a new early branchpoint in phosphonate biosynthesis catalyzed by an aminotransferase with evolved specificity for phosphonate metabolism. Peptide formation is catalyzed by two ATP‐grasp ligases, the first of which produces dipeptides, and a second which ligates dipeptides to PnAla to produce phosphonoalamides. Substrate specificity profiling revealed a dramatic expansion of dipeptide and tripeptide products, while finding PnaC to be the most promiscuous dipeptide ligase reported thus far. Our findings highlight previously unknown transformations in natural product biosynthesis, promising enzyme biocatalysts, and unveil insights into the diversity of phosphonopeptide natural products.

Phosphonoalamides Reveal the Biosynthetic Origin of Phosphonoalanine Natural Products and a Convergent Pathway for Their Diversification.

Phosphonate natural products, with their potent inhibitory activity, have found widespread use across multiple industries. Their success has inspired development of genome mining approaches that continue to reveal previously unknown bioactive scaffolds and biosynthetic insights. However, a greater understanding of phosphonate metabolism is required to enable prediction of compounds and their bioactivities from sequence information alone. Here, we expand our knowledge of this natural product class by reporting the complete biosynthesis of the phosphonoalamides, antimicrobial tripeptides with a conserved N-terminal l-phosphonoalanine (PnAla) residue produced by Streptomyces. The phosphonoalamides result from the convergence of PnAla biosynthesis and peptide ligation pathways. We elucidate the biochemistry underlying the transamination of phosphonopyruvate to PnAla, a new early branchpoint in phosphonate biosynthesis catalyzed by an aminotransferase with evolved specificity for phosphonate metabolism. Peptide formation is catalyzed by two ATP-grasp ligases, the first of which produces dipeptides, and a second which ligates dipeptides to PnAla to produce phosphonoalamides. Substrate specificity profiling revealed a dramatic expansion of dipeptide and tripeptide products, while finding PnaC to be the most promiscuous dipeptide ligase reported thus far. Our findings highlight previously unknown transformations in natural product biosynthesis, promising enzyme biocatalysts, and unveil insights into the diversity of phosphonopeptide natural products.

An exploration of omni‐channel retail from a three‐party evolutionary game perspective: Brand strength vs. platform stream

AbstractThis study builds a three‐party evolutionary game to study the contributing factors of commission rate, productivity expansion, cooperation subsidy, brand strength, and platform stream. The proposed model investigates the diverse paths the three parties are motivated to pursue at different phases of omni‐channel integration and further explores which party, the band owner with strong brand strength, or the platform with a mass consumer stream, dominates omni‐channel negotiation regarding profit distribution arrangements.

Cyanide in cassava: Understanding the drivers, impacts of climate variability, and strategies for food security

AbstractThe consumption of cassava, a vital staple food for more than 1 billion people worldwide, holds particular significance in sub‐Saharan Africa (SSA). Expansion in cassava production in SSA is driven by increasing market demand, local consumption, and adaptability to diverse environments. However, cyanide concentration in cassava tubers and products across SSA ranges from 9 to 1148 ppm – most exceed the World Health Organisation's recommended safe level of 10 ppm. Such variation and high cyanide concentrations in cassava products are expected to be exacerbated by climate‐induced increases in the frequency, intensity and occurrence of drought, heat waves and biotic stresses, further jeopardising regional food security. Thus, it is essential to examine cassava production and cyanide toxicity under climate change and their implications for food security in SSA. In this review, we look at the drivers of cassava production and spatial variation in cyanide concentrations across SSA, impacts of climate variability and biotic stresses on cassava cyanide concentrations in SSA, and crop management practices for reducing cyanogenic glucosides in cassava tubers. We surmise that urgent actions are required to adopt improved cassava varieties and management strategies that reduce cassava cyanide toxicity amid climate‐induced challenges in SSA.

External Debt, Transmission Channels, and Economic Growth: Evidence of Debt Overhang and Crowding-Out Effect

This study investigates the intricate relationship between external debt, debt service, and economic growth by using the panel data of 32 Asian Developing Economies (ADE) spanning 1995 to 2020. Employing a two-step system generalized method of moments (GMM) and a dynamic common correlated estimate (DCCE) model, the research explores key macroeconomic channels through which debt influences growth and rigorously tests for debt overhang and crowding-out effects. Findings reveal that public and private investment, total factor productivity, and national savings are pivotal channels transmitting the non-linear effect of external debt on economic growth. Notably, only private and public investment convey the non-linear effects of debt service to economic growth, while productivity and savings convey the linear effect. Evidence of debt overhang and crowding-out effects is identified in the sampled economies. The study suggests strategic measures for developing countries, emphasizing the productive use of accumulated debt, enhanced debt management, and timely project completion. Furthermore, it advocates for fostering economic growth through increased productivity, domestic savings, and private sector expansion to reduce dependence on foreign debt, facilitating both debt repayment and economic self-sufficiency.

THE EFFECT OF MICROFINANCE BANK LOAN ON PERFORMANCE OF SMALL AND MEDIUM ENTERPRISES IN NIGERIA

This paper evaluates the impact of microfinance bank loans on small and medium enterprises (SMEs) in Osun State, Nigeria. The SMEs encounter major difficulties when trying to obtain financing, which hampers their growth and contributions to the economy. Microfinance banks are crucial as they provide essential financial services tailored for SMEs, facilitating economic growth. A descriptive survey design was used so as to collect data from 150 randomly selected SME operators across various sectors in the Osun State. The findings show that microfinance loans significantly enhance SME performance leading to increased productivity, employment, and business expansion. However, high-interest rates & stringent loan conditions present substantial challenges that hinder optimal loan utilization. Study concludes that while microfinance bank loans positively influence SME growth, addressing these barriers could improve effectiveness & sustainability in SMEs. Enhancing loan terms could boost microfinance banks role in fostering long-term economic improvement in the region. This study empirically links the microfinance bank loans to SME performance, contributing to the literature on SME financing and economic development in Nigeria.

Land Suitability Evaluation of Cocoa (Theobroma cacao L.) Production Areas in Davao City, Philippines

With the growing demand for cocoa, local farmers and other key players of the cocoa industry were encouraged to boost production to secure supply. However, after many decades of cocoa production, soil fertility and available cultivation areas are shrinking. Land suitability evaluation was conducted in areas grown with cocoa in Davao City, Philippines to determine the current suitability and soil-related constraints for cocoa production intensification and expansion. Using the environmental lapse rate, temperature of the area was determined and suitability were evaluated using Food and Agriculture Organization framework with the aid of QGIS software. Based on the result, six soil series were identified as suitable for cocoa. These included the Cabantian, Bolinao (Inayangan), Bolinao (Paquibato), Miral, Tugbok and undifferentiated soil. Cabantian, Miral and Bolinao (Inayangan) were moderately suitable with limitations in slope and soil fertility. Bolinao (Paquibato) was moderately suitable with limitations in soil depth and sloping topography. Tugbok was marginally suitable due to low soil fertility and slight limitation in slope. Undifferentiated soil was moderately suitable with sloping topography, shallow depth and soil fertility constraints. The six suitable soil series had moderate to marginal limitations. The constraints to cocoa production are manageable to some extent.

Zc and Zcs systems with operator mixing at NLO in QCD sum rules

We study the mass spectra of hidden-charm tetraquark systems with quantum numbers (IG)JP = (1+)1+ (and their I = 12\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ \\frac{1}{2} $$\\end{document} partners) using QCD sum rules. The analysis incorporates the complete next-to-leading order (NLO) contribution to the perturbative QCD part of the operator product expansions, with particular attention to operator mixing effects due to renormalization group evolution. We find that both the parametric dependence and the perturbative convergence are significantly improved for the two mixed operators J1,5Mixed\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {J}_{1,5}^{\ extrm{Mixed}} $$\\end{document} and J2,6Mixed\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {J}_{2,6}^{\ extrm{Mixed}} $$\\end{document}, compared with those for the unmixed meson-meson or diquark-antidiquark type ones. For the d¯cc¯u\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ \\overline{d}c\\overline{c}u $$\\end{document} system, the masses of J1,5Mixed\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {J}_{1,5}^{\ extrm{Mixed}} $$\\end{document} and J2,6Mixed\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {J}_{2,6}^{\ extrm{Mixed}} $$\\end{document} are determined to be 3.89−0.12+0.18\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {3.89}_{-0.12}^{+0.18} $$\\end{document} GeV and 4.03−0.07+0.06\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {4.03}_{-0.07}^{+0.06} $$\\end{document} GeV, respectively, closely matching those of Zc(3900) and Zc(4020). Similarly, for the s¯cc¯u\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ \\overline{s}c\\overline{c}u $$\\end{document} states, the masses of J1,5Mixed\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {J}_{1,5}^{\ extrm{Mixed}} $$\\end{document} and J2,6Mixed\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {J}_{2,6}^{\ extrm{Mixed}} $$\\end{document} are found to be 4.02−0.09+0.17\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {4.02}_{-0.09}^{+0.17} $$\\end{document} GeV and 4.21−0.07+0.08\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {4.21}_{-0.07}^{+0.08} $$\\end{document} GeV, respectively, in close proximity to Zcs(3985)/Zcs(4000) and Zcs(4220), consistent with the expectation that they are the partners of Zc(3900) and Zc(4020). Our results highlight the crucial role of operator mixing, an inevitable effect in a complete NLO calculation, in achieving a robust phenomenological description for the tetraquark system.

How does land consolidation affect nongrain production? Evidence from county-level data in Jiangsu Province, China

Using county-level panel data for Jiangsu Province from 2008 to 2018, this study adopted a fixed effect model to analyze the impact of land consolidation on crop planting structure, also considering the moderating effect of distance from the city center and the heterogeneous effect of various types of land consolidation. The results revealed that farmland consolidation and land reclamation had a negative impact on the proportion of grain crops (rice, wheat, and corn) cultivated, which declined by 0.0051 % (0.0069 %), 0.0055 % (0.0124 %), and 0.0101 % (0.0123 %) for every 1 % increase in investment, construction area, and newly added arable land from farmland consolidation (land reclamation), respectively, demonstrating that land consolidation has not prevented, or even encouraged nongrain production expansion. The production conditions of reclaimed arable land and land transfer practices following consolidation may be factors affecting these declines. Notably, the negative effect of land consolidation on crop planting structure weakens when the land is further away from the city center. To ensure food security, priority should be given to follow-up management after land consolidation and rational oversight and guidance following land transfer.

Entanglement and pseudo entanglement dynamics versus fusion in CFT

The fusion rules and operator product expansion (OPE) serve as crucial tools in the study of operator algebras within conformal field theory (CFT). Building upon the vision of using entanglement to explore the connections between fusion coefficients and OPE coefficients, we employ the replica method and Schmidt decomposition method to investigate the time evolution of entanglement entropy (EE) and pseudo entropy (PE) for linear combinations of operators in rational conformal field theory (RCFT). We obtain a formula that links fusion coefficients, quantum dimensions, and OPE coefficients. We also identify two definition schemes for linear combination operators. Under one scheme, the EE captures information solely for the heaviest operators, while the PE retains information for all operators, reflecting the phenomenon of pseudo entropy amplification. Irrespective of the scheme employed, the EE demonstrates a step-like evolution, illustrating the effectiveness of the quasiparticle propagation picture for the general superposition of locally excited states in RCFT. From the perspective of quasiparticle propagation, we observe spontaneous block-diagonalization of the reduced density matrix of a subsystem when quasiparticles enter the subsystem.

Development of a pressure acquisition system for detecting mandibular movements in ruminants

Livestock farming is responsible for producing much of the animal protein that humans consume. Estimates of significant growth in the world population over the years highlight a demand not only for the expansion of animal production but also for an increase in livestock efficiency. To achieve this, one of the essential factors is improving the nutrition process, with the analysis of the ingestive behavior of ruminants being essential. Therefore, this work presents the development of a system for acquiring, storing, and transmitting signals from a pressure sensor for monitoring and evaluating masticatory movements in ruminants. This system employs a pressure sensor to obtain signals relating to chewing movement. A microcontroller acquires these signals at a sampling frequency of 100 Hz, and the resulting data are transmitted to a smartphone via Bluetooth and stored in a memory card for later analysis. Preliminary bench tests were carried out with the system installed on a full-size prototyped bovine head. Compression movements were applied to a silicone tube, causing pressure variations in the sensor. By transmitting the data to a smartphone via Bluetooth, it was possible to check the signal, adjust the gain of the instrumentation amplifier, and achieve the best positioning of the silicone tube in the mouthpiece. By reading the data recorded on a memory card, it was possible to obtain the signal profile, graphically demonstrating that the signal corresponds to the typical profile for this type of sensor.