Annual Amount Research Articles

Democracy and Multicultural Education in Indonesia: A Bibliometric Study to Build Awareness and Collaborative Action

With the use of bibliometric analysis drawn from several articles indexed in the Scopus database, this study seeks to map the evolution and direction of research on democracy and multicultural education to increase awareness and encourage collaborative action. The data found in levels from 1995 to 2024 will be analyzed to identify pertinent gaps. After that, the data was examined using R / R-Studio, VOSViewer, and Microsoft Excel software to identify keywords and document citation boosters. 193 publications that meet the established criteria, subject, and function were discovered by the researcher. This study's findings indicate a yearly increase rate. The scientific field and the annual quantity of studies published were taken into consideration when analyzing the obtained papers. This bibliometric analysis was restricted to data from Scopus. This study's drawback is that it only uses data sets or metadata from publications that are indexed in Scopus. In addition to offering suggestions for further research, this study gives a concise summary of the literature that scholars studying democracy and multicultural education for awareness-raising and collaborative action review can access.

Calculation of the ecological and economic effect of collecting rainwater with «green» roofs

The problem of the availability of fresh water on the planet is substantiated and the main concepts of sustainable rainwater management, such as: "SuDS", "BMP", "LID", "GI", as well as the concept of "green" structures, are analyzed. The classification and characteristics of the main types of «green» roofs, as well as their main ecological advantages, are presented. The global market for green roofs is shown growing from USD 1.4 billion in 2020 to a CAGR of 17% from 2020 to 2027, to reach USD 4.2 billion by 2027, and is projected to the extensive type will account for more than half of the total market share. The problem of high costs for installation and maintenance of environmentally friendly solutions for the roof is highlighted, therefore the aim of the work is to calculate the ecological and economic effect of collecting rainwater obtained from "green" roofs, in contrast to traditional roofs, and to conduct an economic analysis of social and cost benefits. what green roofs generate over their life cycle using the Net Present Value (NPV) method. The ecological and economic effect of collecting rainwater with "green" roofs was calculated for four cities of Ukraine: Kyiv, Kharkiv, Dnipro and Lviv. According to the results of calculations, the ecological effect of EE ranges from 394,000 m3 in the city of Dnipro and 450,000 m3 in Kharkiv to 567,000 m3 in Kyiv and 647,000 m3 in Lviv. The difference in the obtained calculations depends primarily on the selected area of "green" roofs, which was the lowest in the city of Dnipro (1.47 million m2) and the highest in the city of Kyiv (2.50 million m2), the values of which were chosen conditionally, as well as from the indicator of the average annual amount of precipitation, which is the highest in the city of Lviv (740 mm). The average value of the ecological effect of EE in relation to water retention in the analyzed cities was calculated, which was 515,000 m3. By multiplying EE and water price, the average ECE for these 4 cities was determined to be $380,500. It was concluded that the price of water is a decisive dependent variable in the calculation of ECE. The calculation of the economic analysis of the profitability of investments in "green" roofs corresponding to 1 m2 of intensive and extensive "green" roofs, which was carried out on the basis of the net present value method (NPV). It is shown that investment costs for "green" roofs include the following stages: design of "green" roofs; installation of the "green" roof system; installation of waterproofing; production of substrate for roofs and its installation; selection and planting of plants on the roof; installation of the irrigation system. It is substantiated that both intensive and extensive "green" roofs have a positive indicator of the net present value of NPV. The average NPV per 1 m2 of an intensive "green" roof is more than 10 times higher than the average NPV per 1 m2 of an extensive "green" roof.

Econometric Modeling and Forecasting of Arabica and Robusta Coffee Production for Sustainable Agriculture Development

In the present study, we have used Box-Jenkins approaches an Autoregressive Integrated Moving Average model (ARIMA) for modeling and forecasting of annual amount of Arabica and Robusta coffee production and yield (ARCPY) in India. In this study used time series data was collected from the official website of the coffee board of India from 1986 to 2023 (38 observations). Augmented Dickey-Fuller (ADF) test has used for testing the stationarity of the time series, and the appropriate ARIMA model has selected based on minimum Akaike Information Criterion (AIC). The ARIMA models has compared with the other ARIMA models with respect to forecast accuracy measures, and the residuals has diagnosed for possible presence of autocorrelation, and white noise heteroscedasticity (WNH) test of the fitted models. The MAPE value of ACP and ACY has 8.94 and 9.35 percent respectively shows highly accurate forecasting percentage rate respectively. While, the MAPE value of RCP and RCY has 16.03 and 11.43 percent respectively shows good accurate forecasting percentage rate respectively. Thus, we found the ARIMA (2, 1, 4), (3, 1, 2), (0, 1, 3) and (2, 0, 1) models for Arabica and Robusta coffee; which has observed as the best suitable model for predicting the future annual amount of Arabica coffee production (ACP), Arabica coffee yield (ACY), Robusta coffee production (RCP) and Robusta coffee yield (RCY) respectively, and we have estimated that the annual amount of ACP and ACY achieved in the year 2023-24 from 97379.67 MTs, and 472.29 kg/hectare respectively to 93272.91 MTs, and 379.31 kg/hectare respectively in the year 2034-35 will decrease, and the annual amount of RCP and RCY achieved in the year 2023-24 from 268655.21 MTs, and 1110.68 kg/hectare respectively to 318614.85 MTs, and 1012.90 kg/hectare respectively in the year 2034-35 will reach.

Organic carbon distribution between structural and process pools in the gray forest soil of different land use

The summarized data on the content of organic carbon (Corg) in the subtypes of gray forest soils occurring on the territory of Russia was presented. It was shown that the humus horizons of virgin light-gray, typical-gray, and dark-gray forest soils contain, on average, 2.16 ± 0.67, 2.42 ± 0.61, and 3.58 ± 0.95% Сorg, respectively, while the plowing layers of arable soils contain 1.36 ± 0.40, 1.71 ± 0.40, and 2.84 ± 0.86%, respectively. Structural (particulate organic matter 0.05–2 mm in size, CPOM, and mineral-associated organic matter <0.05 mm in size, CMAOM) and process (potentially mineralizable organic matter, C0, and microbial biomass, Cmic) pools were isolated in the organic matter of samples from different horizons of gray forest soils (Luvic Retic Greyzemic Phaeozems (Loamic)) under small-leaved forest and barley crop. The CPOM/CMAOM ratio in the upper soil horizons under forest and arable land was 0.60 and 0.26, respectively, and this ratio decreased with depth to 0.05 under both land uses. The sizes of the CMAOM, CPOM, C0, and Cmic pools correlated with each other and depended on the depth of the soil horizon, while the effect of land use on the pool ratios was found only for the surface horizons. The contribution of CPOM and CMAOM to the potentially mineralizable pool of organic matter in gray forest soil was 20–41 and 71–87%, respectively. According to the obtained data, the size of the C0 pool was almost equal to the annual amount of the heterotrophic CO2 emission from the soil. It was emphasized that determining of the sizes and ratios of structural and process soil organic matter pools should be important in the programs of carbon monitoring and recarbonization of agroecosystems.

Characteristics and Estimation of Dew in the Loess Hilly Region of Northern Shaanxi Province, China

As a non-precipitation water source, dew is important for plant and animal survival and crop production in arid and water-scarce areas. This study assessed the amount of dew in a dry zone in a long-term (2016 to 2022) field observation experiment at the Ansai Experimental Station, a typical loess hilly area in China. Dew primarily occurred in summer and autumn, with a frequency of >50%. The average annual dew amount was 29.20 mm, with an average annual rainfall of 641.8 mm. The average annual dew-to-rain ratio was 4.58%, and the average annual number of dew days was 143.6 d/a. The surface soil moisture content increased by approximately 1.02% with increasing dew amounts. The change in the soil moisture at a 5 cm depth was 0.14% on average and lagged substantially by 1 h. Using the Beysens model, the annual estimated and measured dew amounts in 2022 were 25.27 and 29.84 mm, respectively, and the annual normalized root mean square deviation (NRMSD) was 0.17. Thus, the Beysens model evaluated the dew amount in the study area well at the monthly and annual scales. The quantification of dew resources can provide support for the development, utilization, and management of limited water resources in arid areas, promoting more accurate decision-making for the sustainable development of water resources in the future.

Thermoeconomic Assessments of Green Hydrogen Production Via PV&PEM Electrolyzer:

The study aims to estimate the amount and cost of hydrogen and oxygen that can be produced in the Al-Jufra region (Libya) using photovoltaic panels (PV). The electricity generated by PV is used to power the proton exchange membrane (PEM) electrolyzer. Through the study, the thermal efficiency of the system is calculated, as well as the factors affecting it. The amount of solar radiation that the region receives during the year is also determined, amounting to 81.72 kW/year m2, with a duration of 3421 daylight hours. With this radiation value, it is possible to produce 1272 and 636 mol/year m2 of hydrogen and oxygen, respectively, at an estimated cost of $1.42 per mole. Thermodynamic analysis of PV cells and electrolyzer shows that the electrical efficiency and exergy efficiency of PV cells are 4.8% and 5%, respectively, and vary according to the radiation intensity. The exergy and energy efficiency of the analyzer remained constant at 48% and 39%, respectively, according to the aforementioned arrangement. The decrease in the efficiency of PV energy efficiency affects the overall efficiency of the system and does not exceed 3% in ideal conditions. In addition, the expected cost in 2030 is estimated and found to be 5.77% lower than its current price. Comparing the amount and price of production in the Al-Jufra area with other areas in Libya, it becomes clear that the city of Al-Kufra has a 20% higher annual production amount.

A smart platform (BEVPro) for modeling, evaluating, and optimizing community microgrid integrated with buildings, distributed renewable energy, electricity storage, and electric vehicles

To achieve net-zero emissions, smart microgrid technologies like building-electric-vehicle (building-EV) energy networks with distributed renewable energy (RE) and energy storage are receiving growing attention. Nonetheless, there are few easy-to-use simulation platforms for conveniently and fast modeling and optimizing building-EV energy networks since it involves many research fields. In this study, a novel open-sourced simulating platform, BEVPro, was proposed to easily and accurately model and evaluate building-EV networks integrating buildings, REs, onsite electric batteries, and EVs. Firstly, the development of BEVPro was introduced. Then, a series of simulations on a community microgrid with 30 buildings, solar panels, onsite batteries, and 30 EVs, was conducted via BEVPro to optimize the investigated network. To be specific, in the comparison of annual energy amounts and grid powers for validating the accuracy of BEVPro with TRNSYS, the differences are smaller than 1.1% and 6.4%, respectively. Then the influences of different quantities of energy components (like the EV) were explored, and the four rule-based strategies were compared via BEVPro, of which the optimal strategy with the largest economic benefits (reducing 61.5% energy cost for residents) was selected for the parametric optimization of the energy components and control strategy, to further improve the energy flexibility of the building-EV network.

Valorizing cashew nutshell residue for sustainable lignocellulosic panels using a bio-based phenolic resin as a circular economy solution

The motivation for this study stems from the significant annual amount of cashew nutshells produced worldwide, which has raised growing concerns about proper environmental disposal. One alternative is to utilize the nutshells to produce particleboards and eco-friendly resin, thereby contributing to the circular economy. The present study proposes an innovation by providing the first insights into particleboard production, utilizing pressed cashew nutshell and a phenolic resin derived from the reaction of cashew nutshell liquid (CNSL) with formaldehyde. The mass proportions of CNSL to formaldehyde were varied at 1:0.25, 1:0.5, and 1:0.75 (w/w) without the necessity for isolating chemical compounds at 105 °C. The resin was characterized using rheology, DSC, FTIR, HPLC, and NMR techniques. The mechanical properties of the particleboard were evaluated through density, tensile, flexural, water absorption, and thickness swelling tests. The formaldehyde emission and biodegradability content of the particleboards were also evaluated. Eco-friendly phenol-formaldehyde resin promoted the modulus of elasticity (MOE) from 707 to 1866 MPa and the modulus of rupture (MOR) from 6.4 to 14.3 MPa. In addition, using adhesive with CNSL to formaldehyde mass ratios of 1:0.25 and 1:0.50 resulted in particleboards of class E1 in terms of formaldehyde emissions. The biodegradability of panels PB25, PB50 and PB75 was 30%, 21% and 20%, respectively, in 30 days. These findings demonstrate the potential of cashew nutshell biomass and eco-friendly resin as an adhesive in the particleboard industry.

The implication of spatiotemporal rainfall distribution on the estimation of areal rainfall characteristics in Upper Erer Sub-basin, Ethiopia

Abstract The distribution of rainfall is not uniform in various regions of the world. Rainfall study is used to recognize the characteristics, duration, and variability of temporal and spatial rainfall distributions. In Ethiopia, the annual and seasonal rainfall distributions are variable in space and time. This study is focused on the implication of spatiotemporal rainfall distribution on the areal rainfall characteristics evaluation under the Upper Erer Sub-basin, located in Eastern Ethiopia. In the study area, average annual rainfall amount for Dire Dawa, Harar and Haramaya, Girawa, and Gursum stations are found to be 647, 816, 801, 958, and 840 mm with coefficients of variation of 23, 20, 20, 19, and 31%, respectively. However, the rain gauges here are sparsely distributed. The rainfall occurrence and distribution at various gauging stations have been found to vary significantly both temporally and spatially. The rainfall occurrence and distribution at various gauging stations had been found to vary significantly both temporally and spatially. The spatiotemporal rainfall distribution found in the stations was assessed using a joint probability of rain days approach. The result indicated joint probability of rain days estimation approach under monthly time step has better performance than daily, decadal, and seasonal data. The joint probability approach is used along with rainfall amount under monthly rainfall for areal rainfall estimation assessment in rainfall–runoff modeling.

Supporting business functions influencing the formalization of charcoal business in Tanzania

Charcoal business, production, and sustainability are all under the control of government regulations. In Tanzania, the entire charcoal value chain employs approximately two million people. As a result, there are unreliable records for registered actors, and it is difficult to accurately quantify the annual amount of charcoal production and revenue collected by the Tanzanian government. Supporting functions are legally provided activities and services to support charcoal actors to formalize their business, including participation in the formulation of forest laws, market infrastructure development, training, access to information, and financial services. Supporting business functions available for charcoal actors such as producers, wholesalers, and retailers to facilitate the formalization of the charcoal business in Tanzania. This study was conducted to determine the supporting functions that are important to charcoal actors in Tanzania to formalize their activities. A total of 107 charcoal actors were administered a semi-structured questionnaire using the multiple sampling technique, which involved 31 wholesalers and 42 retailers trading in two of the largest markets, one in Dar es Salaam and the other in Zanzibar. Both markets depend on charcoal production in Handeni district, located in Tanga Region. Principal component analysis (PCA) indicated that formalizing the charcoal sector in Tanzania necessitates public-private partnerships (22.9%), financial services and legal environments (21.9%), and market infrastructures (15.6%). We concluded that the charcoal business needs the collaboration of the government with non-government organizations to share resources such as forest staff, vehicles, and incentives to motivate the participation of actors in the training of the legal procedure of charcoal business management, the formulation of registered charcoal groups or associations, and the establishment of charcoal selling centres. Moreover, the development of forest laws should be participatory to involve charcoal business stakeholders to have a reasonable cost of issuing licenses and other permits.

Hydrological Changes and Sediment Dynamics in the Inner Mongolia Section of the Yellow River: Implications for Reservoir Management

The Inner Mongolia section of the Yellow River is a primary alluvial segment of the main channel. The variations in water and sediment not only alter the cross-sectional morphology and flow capacity of the river but also impact the scheduling of upstream cascade reservoirs. Based on runoff and sediment load data and topographic information from typical hydrological stations, the characteristics of runoff and sediment load variations and the evolutionary pattern of siltation in the Inner Mongolia River section were analyzed via trend analysis methods, Mann–Kendall test methods, the sediment load transport rate method, and the water level–flow relationship. The results showed that the water and sediment loads at the hydrological stations in the Inner Mongolia River section significantly changed from the 1960s to after 2000, with runoff decreasing by approximately 22% to 32% and the sediment load decreasing by approximately 65% to 73%. Sedimentation in the river section generally increased, and the average annual siltation amount reached 0.144 billion t. The joint utilization of the Longyangxia and Liujiaxia reservoirs in 1987 was the main reason for the rapid increase in siltation, and siltation in the Inner Mongolia River section was slightly reduced after 2005. In addition, the critical sediment load coefficients of the Bayangaole–Sanhuhekou and Sanhuhekou–Toudaoguai River sections were 0.0073 and 0.0051 kg·s/m6, respectively, from 1952 to 1968, and 0.0053 and 0.0037 kg·s/m6, respectively, from 1969 to 2020. This study could provide technical support for river flood control and reservoir water sediment regulation in Inner Mongolia.

Economic aspects of the cardiology program expansion of additional drugs provision by effective lipidlowering drugs for hypercholesterolemia control

The federal program of preferential drug provision in cardiology shows its effectiveness. However, hypercholesterolemia (HCH) remains a significant problem in patients in whom high-dose statin therapy does not provide the target level of low-density lipoprotein cholesterol (LDL cholesterol). The solution to the problem lies in the plane of prescribing lipid-lowering drugs of a different mechanism of action, for example, inhibitors of the PCSK9 enzyme. To recommend the inclusion of such kind drugs in the program, it is necessary not only to have evidence of their life-saving effect, but also the economic feasibility of their use. Aim: to evaluate the economic efficacy of alirocumab (INN) including in the federal program for patients who have suffered an acute coronary event, are receiving statins and have an LDL CH level of 5.0 mmol/l and higher.Materials and methods. Modeling was applied in a target group of 3029 patients of working age who had undergone ACS during the previous 12 months with severe, including familial, HCH, with LDL cholesterol 5.0 mmol/l and higher, receiving statins taking into account previously determined outcomes when using alirocumab + statins for 5 years. Direct medical and non-medical costs, as well as indirect costs, are identified. The cost-effectiveness analysis was applied from the point of view of the effectiveness of treatment (effects on mortality, temporary disability, disability) and direct health care costs (additional drug provision and outpatient follow-up, specialized, including high-tech, medical care in a 24‑hour hospital). Two healthcare technologies were compared: statin therapy and use of alirocumab + statins. The calculations used according to domestic methods used the cost of medical treatment, temporary disability, hospitalizations, loss of GDP and other parameters.Results. Modeling has shown a decrease in mortality, morbidity and disability when using alirocumab in even the first year of use. The economic effect of alirocumab from a decrease in temporary disability in the 1st year is 304.5 mln rub., in the 2nd — 301.5 mln rub., in the 3rd — 321.1 mln rub., in the 4th — 333.1 mln rub. The estimated amount of prevented GDP losses from mortality in the target group for 4 years in the case of alirocumab use amounted to 1,260.2 mln rub. The annual amount of avoidable GDP losses from mortality in the target group in the case of alirocumab is 27–30 %. The annual average savings per patient in the case of alirocumab use are from 7 to 17 %. The greatest impact on reducing losses from disability and mortality of the target group is noted in the group of people aged 40–59 years. Only for this group, if alirocumab is used, it is possible to reduce losses from disability and mortality by 159.2 million rubles per year (83 % of the total economic effect). Starting from the 4th year of alirocumab use, it is possible to obtain a positive economic effect in terms of hospitalization costs.Conclusion. When alirocumab is included in the program of additional drug provision in cardiology, the share of costs for the purchase of alirocumab for the target group may be only 0.01 %. At the same time, the economic effect of inclusion in the first year alone will amount to at least 393.4 million rubles of budget funds. The total amount of avoidable losses due to the alirocumab usage may amount to 1,638 million rubles over 4 years.

An Interactive Modeling Tool for Projecting the Health and Direct Medical Cost Impact of Changes in the Sexually Transmitted Diseases Prevention Program Budgets.

Estimating the return on investment for public health services, tailored to the state level, is critical for demonstrating their value and making resource allocation decisions. However, many health departments have limited staff capacity and expertise to conduct economic analyses in-house. We developed a user-friendly, interactive Excel-based spreadsheet model that health departments can use to estimate the impact of increases or decreases in sexually transmitted infection (STI) prevention funding on the incidence and direct medical costs of chlamydia, gonorrhea, syphilis, and STI-attributable HIV infections. Users tailor results to their jurisdictions by entering the size of their population served; the number of annual STI diagnoses; their prior annual funding amount; and their anticipated new funding amount. The interface was developed using human-centered design principles, including focus groups with 15 model users to collect feedback on an earlier model version and a usability study on the prototype with 6 model users to finalize the interface. The STI Prevention Allocation Consequences Estimator ("SPACE Monkey 2.0") model will be publicly available as a free downloadable tool. In the usability testing of the prototype, participants provided overall positive feedback. They appreciated the clear interpretations, outcomes expressed as direct medical costs, functionalities to interact with the output and copy charts into external applications, visualization designs, and accessible information about the model's assumptions and limitations. Participants provided positive responses to a 10-item usability evaluation survey regarding their experiences with the prototype. Modeling tools that synthesize literature-based estimates and are developed with human-centered design principles have the potential to make evidence-based estimates of budget changes widely accessible to health departments.

U.S. Pediatric Residents’ Preparedness, Attitudes, and Knowledge in LGBTQ+ Health Care

The objective of this study was to evaluate pediatric residents' lesbian, gay, bisexual, transgender, queer, and all sexual and gender diverse (LGBTQ+) care. In June 2022, U.S. pediatric residents completed an anonymous online survey including the Lesbian, Gay, Bisexual, and Transgender-Development of Clinical Skills Scale (LGBT-DOCSS). Pediatric residents (n = 78) reported low-to-moderate annual amounts of LGBT curricular hours (3.32 ± 3.17) and LGBT patients (13.84 ± 15.11) as well as low-to-moderate clinical preparedness and knowledge and high positive attitudes. They were significantly less likely to report receiving adequate training and supervision, having experience, and feeling competent in transgender care compared with lesbian, gay, and bisexual care. In general, pediatric residents who reported more LGBT education and LGBT patients also reported higher LGBT-DOCSS scores. Pediatric residents in this study had substantial shortcomings in LGBTQ+ care. Pediatric programs must increase LGBTQ+ education and LGBTQ+ patient exposure.

Characterizing PFAS concentrations in drinking water treatment residuals

AbstractWhile drinking water treatment plants (DWTPs) are not considered a source of per‐ and polyfluoroalkyl substances (PFAS), PFAS concentrate in treatment residuals relative to their source water concentrations. Regulatory actions considered for PFAS‐impacted residuals could affect the cost and viability of conventional residual management practices. This study estimated the annual quantity of residuals generated in the United States and presents a framework for understanding how PFAS may concentrate in these residual streams. Findings of this work indicate that PFAS may substantially impact DWTP residuals management, especially coagulation and softening solids, at concentration factors greater than 100 and spent adsorbents at PFAS concentration factors greater than 10,000. If potential regulatory actions were to apply to coagulation and softening residuals, those regulations must consider impacts on disposal of more than 420,000,000 wet tons of at‐risk DWTP residuals which are generated annually.

Pemberdayaan Masyarakat Desa Sukajaya Sumedang Selatan dalam Produksi Minuman Kesehatan dan Bumbu Rempah berbasis Teknologi Farmasi

As a result of observations and joint discussions with the Village Community, information was obtained that there are agricultural products in the form of spices with high annual production quantities. However, the selling value of these spices still needs to be improved. Technology has not touched them and has yet to be managed optimally. Therefore, the team empowers the community to process herbs into food products, namely health drinks and spices based on pharmaceutical technology. This activity aims to improve community welfare and mutual elements of human resources in the region. This activity was attended by 28 community members who are Partners and Village Officials. Social empowerment of the society involved in the downstream activities of agricultural products in Sukajaya Village will be carried out through socialization stages, FGD with society and village officials, establishing a micro business plan for downstream health drink products and spices building production facilities, and assistance. This activity produces products in spices, health drinks, and herbal candy. At least 80-90% of the community understands each stage of the activity so that it can become a provision for self-development. The output of this activity is in the form of innovative products, such as health drinks and spice products, which can increase partner empowerment.

Art in times of crisis

AbstractWe trace the long‐term performance of the UK art market across a broad set of crises: world wars, economic recessions, financial crises, inflationary periods, and changes in monetary policy. By means of digitalized historical auction archives, we construct art price indices from the early twentieth century onwards and disclose that annual art auction value grew, in real terms, more than seven‐fold over this period. The arithmetic annual real return and risk amount to 3.6 per cent and 20.1 per cent, respectively. Art returns plummeted at the onset of wars, but turned positive in the second half of wars when they outperformed stocks, suggesting that art was seen as a safe haven in times of political turmoil. During wars, smaller – and thus more transportable – paintings obtained higher returns. Art returns are sensitive to economic and financial crises, with the largest slumps occurring during the Great Depression, oil crisis, recessions of the early 1980s and early 1990s, and the Great Recession. We also document changes in art preferences for paintings’ sizes, schools, liquid art, and artists’ nationalities across crises. Art enters a broad optimal asset portfolio both in non‐crisis periods and during war times.

High-resolution land surface modeling of the irrigation effects on evapotranspiration over the Yellow River basin

Accurate estimation of irrigation-induced evapotranspiration (ET) is critical for understanding the terrestrial water cycle. However, current estimation has large uncertainties due to the model limitations and the lack of accurate water use data. In this study, a water-energy balanced irrigation scheme is incorporated into the Conjunctive Surface-Subsurface Process version 2 (CSSPv2) model to improve the hydrological simulations over the Yellow River basin (YRB) where irrigation is extensive. The coupled model (CSSPv2-IRR) is calibrated against long-term water use data from provincial survey, and it is used to perform a 6-km resolution simulation over the YRB during 1991–2017. The results show that the coupled model can well reproduce hydrological processes within the basin, and the simulated irrigation amount, ET and surface soil moisture largely agree with the validation datasets. Specifically, the annual irrigation amount and irrigation-induced ET changes from the CSSPv2-IRR are more reasonable than ISIMIP2a and reanalysis products, with a reduction in bias by 79.5–97.3 % and 81.2–98.8 % respectively. The CSSPv2-IRR model simulation suggests that irrigation-induced annual ET change is 26.4 mm/year during 1991–2017, contributing to an 8.9 % increase in annual ET over the YRB, and the increase can reach 44.3 % over major irrigation districts. In addition, the contribution of irrigation to long-term increasing trend in ET over the irrigation districts in the upper reach is greater than the contribution of climate change. This study suggests a growing control of irrigation on the ET over the YRB, which has implications for regional water cycle and water resources management.

Geospatial Approaches to Improve Water Availability through Demand Assessment in Agriculture Based on Treated Wastewater: A Case Study of Weinstadt, Baden-Württemberg

The sustainable management of water scarcity is a globally crucial issue. Germany has established efficient water management systems, but the agricultural sector still struggles with water scarcity as the demand surpasses the available water supply. In this work, the primary aim was to establish a framework for making water accessible for irrigation and additional use in households through the effective utilization of recycled water from wastewater treatment facilities. The research inquiries were focused on evaluating the changes in the CROPWAT agricultural irrigation model, determining the spatial distribution of zonal severity, estimating the capacity of urban roof catchments, and evaluating the economic value addition of retreated water from the existing wastewater treatment plant supply. According to the findings, the annual amount of water required for agriculture in the designated study location is approximately 2.9 million m3. Although there is no initial need for irrigation water, the demand for irrigation water increases during the development, active growth, and mature stages of maize, winter wheat, and wine grapes, reaching around 189 mm, 223 mm, and 63 mm, respectively. According to our observations, the annual water supply in Weinstadt is around 4 million m3. On the other hand, the compensated volume of water to the current water supply calculated from the urban roof rainfall is estimated to be 0.8 million m3, which is considered valuable from an economic standpoint. This economically efficient volume of water would reduce the current treated water supply, which indicates an opportunity for enhanced agricultural irrigation.

Life cycle cost of coke dry quenching waste heat recovery-mediated power generation

Coke dry quenching (CDQ) can not only improve the quality of coke, but also use waste heat to generate electricity, thus exhibiting the characteristics of good energy-saving and consumption reduction. This study refers to typical cases in China, which involve the comparison of the comprehensive cost of CDQ waste heat recovery-mediated power generation with that of coke wet quenching (CWQ), considering both the economic and environmental costs based on the whole life cycle method. Moreover, a better value of scale of CDQ processing capability is discussed, and sensitivity analysis is carried out. The results show that: (1) Compared with CWQ, CDQ is an innovative and low-carbon pathway for energy production; however, considerable efforts remain to be made to reduce its cost. (2) Under the condition that the unit prices of electricity and coke were 0.509 yuan/kWh and 1400 yuan/ton, respectively, the LCOE and NPV values obtained at the scale of CDQ processing capacity of 190 t/h are better than those at other scales. (3) The change of the number of generating hours exhibited the greatest impact on the net present value of CDQ, followed by operational cost, annual CDQ amount, investment cost, environmental cost, and financial risk of construction.