Title: Book of Abstracts

Abstract:2nd International Conference on Computational and Applied Physics, ICCAP\'2023

Title: Resilience Of Affected Wetland Rice Farmer Households Flooding: An Integrated Model

Abstract:Natural disasters can hamper development plans in food commodity development. There are many disaster-prone areas that need efforts to reduce the risks that occur from these disasters. The purpose of this study was to analyze the determinants of resilience of households of wet-rice farmers affected by flooding. This research uses a quantitative analysis approach with survey method. The research data were collected through primary and secondary data. The respondent sampling technique used multi-stage cluster random sampling with a total of 306 respondents. The results showed that mitigation, adaptation, coping mechanisms, and risk levels had a significant influence on the resilience model of households of flood-affected wetland rice farmers. Based on these results, this research can be a reference for practitioners in increasing the intention of resilience actions against natural disasters that occur. Furthermore, the need for policies from the government to respond to natural disasters so that they do not have a long impact on the continuity of farming that is managed.

Title: Efficient Conversion of Waste Plant Biomass to Bioethanol fuel as Environmental Recycling Process and Renewable Energy: A useful for Climate Change

Abstract:Agricultural waste biomass has already been transferred to bioethanol and used as energy related products, although many issues such as efficiency and productivity still exist to be overcome. In this chapter, the protein engineering was applied to generate enzymes with completely reversed coenzyme specificity and developed recombinant yeasts containing those engineered enzymes for construction of an efficient biomass-ethanol conversion system. Recombinant yeasts were constructed with the genes encoding a wild type xylose reductase (XR) and the protein engineered xylitol dehydrogenase (XDH) (with NADP) of Pichia stipitis. These recombinant yeasts were characterized based on the enzyme activity and fermentation ability of xylose to ethanol. The protein engineered enzymes were expressed significantly in Saccharomyces cerevisiae as judged by the enzyme activity in vitro. Ethanol fermentation was measured in batch culture under anaerobic conditions. The significant enhancement was found in Y-ARS strain, in which NADP+-dependent XDH was expressed; 85% decrease of unfavorable xylitol excretion with 26% increased ethanol production, when compared with the reference strain expressing the wild–type XDH.

Title: Role of humic substances in �Green� and sustainable electronics: current status, scope and future

Abstract:Finding sustainable solutions for the present global energy needs compels us to look after renewable energy resources. Conventional electronic technologies utilizing these resources offer obvious disadvantages such as low biocompatibility and biodegradability. Materials possessing biocompatibility, biodegradability, and low toxicity with increased performance are sought after by researchers in the field of organic electronics. The recent emergence of �Green electronics� indicates this shift in the field. The potential of many biomaterials for organic electronics applications has been realized fairly thoroughly. Out of these Humic Substances forming a significant part of biomass are relatively unexplored for applications in electronic devices. A large literature exists which explains their chemical, biological and geologicalproperties with applications in the field of agriculture and bio-medicine. However, research on their potential for electronic device applications has been comparatively low. Some of the recent investigations on humic substances, particularly on humic acids, reveal them to be a suitable candidate for the fabrication of a variety of electronic devices (Batteries, Supercapacitors, Solar Cells etc.). Easy availability, low-cost production, and environmental friendliness further add to their suitability. In the present review, we have discussed in briefvarious important aspects of humic substances (chemical, electrical and optical) and attempted to put forth the role these substances could play in electronic device making. A survey of past research work on humic substances-based electronic devices is also presented. Furthermore, from a futuristic viewpoint, potential areas of investigation (e.g., Ferroelectricity,Supramolecular electronics etc.) have been touched upon.

Title: Phytochemical analysis, antioxidant and antibacterial activity of Pereskia bleo flowers

Abstract:Pereskia bleo, belongs to the Cactaceae family has been traditionally used for treating various diseases. This study aimed to determine the phytochemical analysis, antibacterial activity, antioxidant activity, total phenolic content, and total flavonoid content of Pereskia bleo flowers. Phytochemical screening revealed the presence of glycoside, alkaloid, flavonoid, saponin, tannin, steroid, and terpenoid. The antioxidant activity test indicated that the crude extract of Pereskia bleo flowers had an average IC50 value of 6 ± 0.4359, confirming positive results in the phenolic content test. The total phenolic content of the Pereskia bleo flower crude extract was calculated as 75.295 mg/g at a concentration of 15.059 μg/ml and absorbance of 0.165. In contrast, the calculated total flavonoid content was 7.385 mg/g at a concentration of 9.477 μg/ml, suggesting the present of flavonoid compounds in the flowers of Pereskia bleo. The antibacterial activity of this sample was also tested using the disc-diffusion method against Gram-negative (Salmonella sp., Pseudomonas sp., E. coli) and Gram-positive (Staphylococcus aureus, Bacillus sp., Staphylococcus epidermidis) bacterial strains. The collected data showed that both 100 μg/ml and 500 μg/ml sample concentrations exhibited potent activity against Salmonella sp. and Pseudomonas sp.

Title: Bankruptcy forecast analysis: empirical study of the manufacturing subsector of Norte de Santander, Colombia

Abstract:The study \"Bankruptcy Forecast Analysis in the Manufacturing Subsector of Norte de Santander, Colombia (2015 – 2022)\" offers an empirical evaluation of financial stability in this region, using the capital structure theory of Modigliani and Miller and the Altman Z-Score model for bankruptcy risks as a theoretical foundation. Through a quantitative approach that includes time series analysis, the internal and external factors that affect the financial competitiveness of the subsector are analyzed. The research highlights the contributions and limitations of capital structure theory and the Z-Score model in real practices, and discusses the integration of advanced technologies such as artificial intelligence to fine-tune financial risk predictions. Using purposeful sampling and documentary analysis, patterns are identified and business solvency is assessed, providing a detailed view of the sector\'s resilience in the face of economic challenges. This study provides valuable insights for those interested in the financial sustainability of the manufacturing sector, highlighting the importance of adapting risk management strategies to regional particularities. Its contribution to the specialized literature lies in offering an updated perspective on bankruptcy forecasting and financial management adapted to the specific context of the Colombian emerging economy.

Title: Urban Sustainability: Spatial distribution and ecological niche modelling of Brachytrupes membranaceus under climatic incidence in Kinshasa, DR. Congo

Abstract:Species distribution modeling has become a very popular tool for anticipation and decision-making in biological resource conservation. This study aims to assess changes in the future distribution of Brachytrupes membranaceus habitats in Kinshasa between 2055 and 2100.\nThree variables contributed most to the model: rainfall in the driest month (38.4%), soil (28.9%) and rainfall in the coldest quarter (13.9%). Currently, 89.3% of Kinshasa\'s surface area is highly favorable to the development and conservation of B. membranaceus, compared with 69.5% and 47.5% in 2055 (optimistic and pessimistic scenarios respectively) and 61.5% and 39.2% in 2100 (optimistic and pessimistic scenarios respectively), mainly in the urban zone. From the current to the future climate, the areas potentially favorable to the development and conservation of B. membranaceus shift from the periphery to the urban center of Kinshasa (for all scenarios for the years 2055 and 2100).\nThis shows that threats to the development and conservation of B. membranaceus are mainly due to anthropogenic activities (anarchic construction and slash-and-burn agriculture) and less to climatic/environmental factors (rainfall and soil). These results contribute to Sustainable Development Goals 11 and 15 by 2030.

Title: Want to be a Martian? Be a photoautotrophic human

Abstract:Cyanobacteria had taken 2.7 billion years to change O2 content to a habitable level on the Earth. In terraforming Mars, producing O2 and food, and creating a tolerable radiation are challenging. Here, we argue that, with the available advancements of science today and perhaps in years to come, the maximum, humans would be able to do on Mars in the future is to live inside a chamber with controlled conditions. But, no one would be able to be a real Martian who can walk freely on Mars soil. Thinking outside the box, there is a great possibility for us to do that by getting ourselves changed a little bit to be adaptable to Martian conditions, which is much more achievable than changing a whole planet. Here, we suggest that by being photoautotrophic humans, like the spotted salamander, and having the ability to tolerate radiation, we would be able to be real Martians.

Title: Ecological characterization of habitats of three insect species prized by populations in Kinshasa (DR. Congo)

Abstract:Vegetation is a potential habitat for biodiversity. Characterizing its diametric and spatial structure is a key factor in management. With this in mind, this study aims to characterize the natural habitats of Brachytrupes membranaceus, Cirina forda and Gonibrasia jamesonii, the insect species most widely consumed in Kinshasa. An inventory of caterpillar host trees was carried out around mother plants (M. laurentii: dbh ? 90 cm and A. auriculiformis: dbh ? 40 cm) in 24 plots of 2500 m2 in woodland formations. The circumference, x and y coordinates of each individual at dbh ? 10 cm were recorded; and soil physicochemical parameters were measured in situ in relation to the presence of B.membranaceus. The results show that the diametric structures of the tree stems of all the stands studied are generally inverted "J", with small irregularities at class [40-50] and [20-30] cm respectively of Millettia planted forests and Millettia natural forests (p-value= 2.6). An average of 342.1, 94.0 and 107.0 trees/ha (p-value = 0.4) were inventoried in the Acacia plantations, the Milletia planted forest and the Milletia natural forest respectively, showing a random and/or aggregated distribution according to the tree stand categories compared and, an average basal area of 6.93, 12.58 and 5.39 m2/ha (p-value= 0.5). The soil is neutral (6.8) with a moisture content of 10.46%, a temperature of 32.6�C, a depth of 46.86 cm and a blackish/brownish color. This result provides unsurpassable information for planning management itineraries and orienting peri-urban ecosystem exploitation system in a more sustainable way. This study is part of the logic of contribution to SDGs 2 and 15 by 2030.


Abstract:PT. XY became one of the companies in West Java by implementing an organic farming system. The company uses the concept of agricultural cultivation free from artificial chemical fertilizers and insecticides with permaculture and aquaponics systems. Aquaculture innovations applied to the company do not always produce sweet results directly, although the application of the concept has reduced costs but has not been able to obtain maximum business benefits. Competition in aquaponics marketing and competitiveness in similar fields have also become polemics in the world of aquaponics. In this research, the main focus is to find a business to customer (B2C) development model that is suitable for selling aquaponic products for PT. XY. The research method used is a case study, which is a qualitative approach. Data is processed and analyzed descriptively and using SOAR tools (Strenght, Opportunities, Aspiration, Result) and analysis matrices. The results of this study show that: (1) marketing strategies that can be applied at PT XY based on SOAR analysis (strength, opportunities, aspirations, results) are Market Penetration and product development strategies; (2) The right B2C development model for PT. XY is a Business Model Canvas, which not only pays attention to nine elements, namely 1) Customer Segment, 2) Value Propositions, 3) Channels, 4) Customer Relationship, 5) Revenue Streams, 6) Key Activities, 7) Key Resources, 8) Key Partners, and 9) Cost Structure but also XY Company must pay attention to three other elements, namely: 1) Revenue Stream, 2) Eco Social Cost, and 3) Eco Social Benefit because the product of sale is aquaponic vegetables.