Production Centers Research Articles

Identification of the highly active Zn-N4 sites with pyrrole/pyridine-N synergistic coordination by dz2+s-band center for electrocatalytic H2O2 production

Single metal atoms anchored on nitrogen-doped carbon materials (M-N4) have been identified as effective active sites for catalyzing the two-electron oxygen reduction reaction (2e-ORR). However, the relationship between the local atomic/electronic environments of the M-N4 sites (metal atoms coordinated with different types of N species) and their catalytic activity for 2e-ORR has rarely been elaborated clearly, which imposes significant ambiguity for the rational design of catalysts. Herein, guided by the comprehensive density-functional theory calculations and predictions, a series of Zn-N4 single-atom catalysts (SACs) are designed with pyrrole/pyridine-N (NPo/NPd) synergistic coordination and prepared by controlling the pyrolysis temperature (600, 700, and 800 °C). Among them, the dominated Zn-N4 configurations with rationally combined NPo/NPd coordination show *OOH adsorption strength close to the optimal value, much superior to those with mono N species. Thus, the as-prepared catalyst exhibits a high H2O2 selectivity of over 90% both in neutral and alkaline environments, with a superb H2O2 yield of up to 33.63 mol g−1 h−1 in an alkaline with flow cell. More importantly, a new descriptor, dz2+s band center, has been proposed, which is especially feasible for predicting the activity for metal types with fully occupied s and d orbitals. This work thus presents clear guidance for the rational design of highly active SACs toward ORR and provides a complement to the d-band theory for more accurately predicting the catalytic activity of the materials.

Emerging Challenges for Cleaner Production Networks – The decline of the Global Resource Efficient and Cleaner Production Network (RECPnet)

Cleaner production has been channelled through National Cleaner Production Centres (NCPCs) across the world since the year 1994. In order to strengthen the scaling up and replication of Resource Efficient and Cleaner Production (RECP) in developing and transition countries, the Global Resource Efficient and Cleaner Production Network (RECPnet) was formed as a platform for networking, knowledge exchange and information transfer. However, the success of such networks can become short-lived if there is no funding strategy beyond project financing and if individual network members fail to take ownership of the network. This research assesses the role of the Global RECPnet in promoting cleaner production and analyses the challenges that the network faced in ensuring its continuity beyond project finance. The research further identifies barriers in the advancement of the Global RECPnet and its goals. A Case Study methodology was used and within the case study, interviews were undertaken with key industry experts in the field of Resource Efficient and Cleaner Production (RECP). Questionnaires were also send to selected members of the network. Content analysis was undertaken on publicly available Global RECPnet documents and evaluation reports. We conclude that networks such as Global RECPnet are effective drivers of cleaner production, but require a plan for network survival beyond patron agencies. However, without patron agencies and international funders, the network proved not to be viable, as most of the members could not finance their own subscriptions. We propose for a hybrid mechanism of network financing and dealing with dependencies on development support.

Exploring new discoveries of steel fining in a Western Han Dynasty city in southwest China: A case study of steel fining remains excavated from the ancient Xindu city in Sichuan Province

AbstractArchaeological discoveries and historical documents show that the Chengdu Plain was the most important iron production center in the southwest region of China during the Qin and Han dynasties. However, due to the lack of archaeological evidence, the iron production technology of cities in the Chengdu Plain during the Qin and Han dynasties remains unclear. The Xindu city site is located in Qingbaijiang District, Chengdu Sichuan Province. It was an important city site in the Chengdu Plain during the Han and Jin dynasties. During excavation of the Xindu city site, archaeologists unearthed a large number of metallurgical remains such as slags and tuyeres, as well as two severely damaged hearth bases near the western city wall. Scientific analysis results suggest that the metallurgical remains are related to the steel fining process and could be dated back to the Western Han Dynasty. The metallurgical remains in the Xindu city are the earliest known artifacts associated with the steel fining process in southwest China. This discovery also marks the first identification of iron industry workshops in a Han Dynasty city in the Chengdu Plain. The findings reveal a different industrial layout pattern from previously discovered Han Dynasty metallurgical sites in the Chengdu Plain. Additionally, this discovery provides archaeometallurgical evidence for the central government's development in southwest China during the Han Dynasty.

Ecological grief in the Fernald Community Cohort: A pilot study

Ecological grief is a psychological response to environmental loss. Ecological grief is especially pronounced in people with close relationships with the environment. The Fernald Community Cohort (FCC) included people who lived near a uranium processing site, also known as the Feed Material Production Center (FMPC), in Fernald, Ohio. The FMPC leaked contaminants such as uranium into the environment, consequently threatening the health, safety, and long-term emotional well-being of people who lived nearby. This study aimed to examine the degree of ecological grief reported by the FCC participants and to discern their degree of ecological grief by residential proximity (how close they lived) to the FMPC, estimated uranium exposure, and cancer diagnosis. Participants were invited to complete a questionnaire to assess their degree of ecological grief. Other variables were collected from the existing FCC database. Ecological grief was prevalent among 55.3% of respondents. A direct relationship between ecological grief, residential proximity, and cancer diagnosis was found, with an indirect relationship between ecological grief and uranium exposure. The strongest predictor of ecological grief was a cancer diagnosis. The findings warrant future studies to mitigate the psychological impact of environmental loss on FCC participants.

Agribusiness analysis of seed producer supports increased soybean production in East Java production centre areas

ABSTRACT Quality seeds are one of the main technological components for increasing soybean crop production. Until now the use of quality soybean seeds in Indonesia only reaches 30%. The constraints of providing soybean quality seeds still often occur. The objectives of this study are to identify the financial feasibility of soybean seed producer in various uses of soybean products; to identify socio-economic constraints on soybean seed producer and to propose a strategy for developing soybean seed producer agribusiness in East Java province. The survey was conducted on soybean seed growers and soybean farmers who planted soybeans in the 2022 growing season. The results showed that the R/C ratio of producers for seed purposes, producers for consumption purposes, and soybean farmers are 1.34, 1.23 and 1.2, respectively. Threats faced by soybean seed producers include suboptimal post-harvest handling and the rapidly decreasing soybean seed germination. The strategy in developing soybean seed producer that can be proposed are: growing soybean seed farmers at each production centre location to meet the needs of seeds on time, quantity, variety, agroclimate, quality, and price, so as to meet the need of local farmers quickly, and reduce the risk of rapidly decreasing seed germination.

Potensi Desa Cisambeng Sebagai Daya Tarik Wisata Gastronomi di Kecamatan Palasah Kabupaten Majalengka

Majalengka Regency has strong tourism development potential in the field of food producers, one of which is located in Cisambeng Village, Palasah District, Majalengka Regency. Being one of the production centers of tofu, tempeh and oncom which is the livelihood of 85% of its residents, Cisambeng Village began to improve in an effort to improve facilities and infrastructure to support gastronomic tourism in Majalengka Regency. Gastronomic tourism is the right strategy in developing the tourism industry in Majalengka Regency. In supporting an area to become a gastronomic city, collaboration between stakeholders called Nona helix (nine springs) is needed . Nona helix consists of entrepreneurs, governments, workers, suppliers, experts, observers, connoisseurs, non-governmental organizations (NGOs) and information technology. This study explains the appropriate form of gastronomic tourism development to be carried out in Cisambeng Village, using qualitative descriptive research methods, with research data obtained from in-depth interviews, observations, and literature studies. The ins and outs of the process of making food and beverage products in accordance with the local cultural values of Cisambeng Village must be able to be packaged into a tourism product that provides its own experience for tourists to visit Cisambeng Village, Majalengka Regency. In addition, support from stakeholders, especially related agencies, namely the Tourism Office and the Industry and Trade Office is needed, not only empowering tempeh and tofu business actors but also monitoring for the success of gastronomic tourism development in Majalengka Regency.

Vitreous finds from the Iron Age archaeological complex at Bilsk (Ukraine) as evidence of trade by land and sea

The Bilsk archaeological complex comprises the remains of many structures associated with an impressive Iron Age fortified site and extends over a vast area in central-east Ukraine. Its importance is marked by the presence of apparently imported objects, including some vitreous ones (represented mainly by glass and faience beads), which provide researchers with materials for studying past trade in the area. A representative set of vitreous fragments was subjected to an analytical study with several instrumental techniques (namely: scanning electron microscopy coupled with energy dispersive spectrometry, laser ablation inductively coupled plasma mass spectrometry, micro-Raman spectroscopy and micro-X-ray diffraction) in order to characterise the beads on compositional basis. The complementary data from different techniques revealed a complex picture for the raw materials, identifying several sources of silica and, consequently, several production centres for the items included in the analysed set. This information in turn led to a better understanding of the trade networks that operated in the region between the 7th and 4th century BCE. Colouring and opacifying agents are also discussed.

PENINGKATAN POTENSI DESA KREATIF MELALUI SOSIALISASI INOVASI PRODUK USAHA KECIL DI DESA NANIA, KOTA AMBON

Creative village is an area located in a village/subdistrict administrative area where the community develops superior products in one or more of 17 creative economic sectors that provide additional value and benefits for village economic growth. In Ambon City, there are many countries/villages that have the potential to develop creative economic products, including Nania Village. Nania Village, especially Nania Gunung Village, has the potential to become a creative village, there are 19 families who own furniture businesses and are the center of furniture production in Ambon City. To increase the added value of the furniture business in Nania Gunung Village, it is necessary to encourage product innovation in the creative economy sub-sector, for example fine arts or high-value crafts. This service activity aims to provide understanding to the village government and business actors about the potential for developing small businesses in Nania Gunung Village through the creative economy sub-sector so that it can encourage the potential of Nania Village as a Creative Village. This community service activity is carried out using the door to door outreach method accompanied by observation, interviews and mentoring. The results of this activity are able to provide understanding to furniture business actors about product innovation so that some furniture business actors have used wood waste to make new craft products and have marketed products through the marketplace.

Äldre rödgods från Studentholmen i Uppsala

Early glazed redwares from Studentholmen in Uppsala- an evaluation of provenance using XRF and ICP analysis. The assemblage of pottery from Studentholmen, excavated by Knut Stjerna in 1907, contains one of the largest and most varied collections of medieval ledglazed redwares from the medieval town of Uppsala. Previous have pointed to the similarities in form and technology with the larger productions centers in western Europe as well as to the possibilities that some of the less elaborately decorated pitchers and jugs might be locally produced. A study, aimed at establishing the provenance of the material by using handheld XRF for a non-destructive screening of the larger material and following ICP-analysis from identified and selected groups have been conducted in 2023. The study shows that the main centers for production of the vessels in Studentholmen where northern Germany and Netherlands. Further the study shows methodological potential for cost effective analyses of large assemblages of early redwares in the future, thus making more materials in museum collections available for much needed research.

Управление горнопромышленными отходами арктических промышленных предприятий: охрана окружающей среды и экономика производства

The problems of mining waste management at industrial enterprises and increasing the economy of production are among the most urgent ones, especially for the Arctic ecosystems, characterized by high sensitivity to external factors and the complexity of recovery. The research was conducted on the example of large industrial corporations directly operating in the Arctic, including PJSC PhosAgro, PJSC MMC Norilsk Nickel, Severstal Resource division of PJSC Severstal and PJSC NOVATEK. The key indicators related to waste management for 20182022 were analyzed. The trend of increasing volumes of mining waste in the Arctic was revealed, while the level of its utilization remained practically unchanged. It is proposed to intensify scientific research in the field of rational use of mining waste and to develop technologies for their processing, taking into account the impact on the Arctic ecosystems. It is suggested to create research and production centers for each industrial enterprise using the experience of the balanced “triple helix” model. It is recommended to actively participate in the Interdepartmental Scientific Council of the Russian Academy of Sciences on the development of the mineral resource base and its rational use, created in 2023, to develop the scientific foundations for the extraction and processing of minerals and accelerate import substitution.

European Smalt in 17th-Century Japan: Porcelain Decoration and Sacred Art

Japanese art tradition, contrary to the case of China, is characterized by an efficient and continued, although mostly undocumented, use of smalt from the late 16th century onward. Recent studies have successfully identified this pigment, the cobalt-colored glass that spread throughout the Old Continent during the Renaissance period, as the coloring agent employed for overglaze-blue enameling on Japanese porcelains produced at the kilns of Arita (the porcelain production center of Japan) from the early 1640s until the 20th century. Fragmentary evidence of the use of smalt in Japanese sacred art has also been reported, yet its earliest incorporation into such a type of traditional art form could not be identified. In order to resolve this crucial issue, portable EDXRF was employed for the non-destructive analyses of Japanese porcelains and sacred images bearing blue decoration. Scientific analysis allowed, for the first time ever, to establish a clear timeline of smalt use. Furthermore, this evidence and the literature data both agree, leading to the identification of the origin of the blue material used on both art productions.

Yield prediction models for some wheat varieties with satellite‐based drought indices and machine learning algorithms

AbstractIn recent years, frequent drought events in Konya, one of Türkiye's most important cereal production centres, have led to increased pressure on water and soil resources, resulting in yield losses, particularly in wheat production. Alternative yield prediction models, especially those that play a crucial role in agricultural import–export planning in the region, are important for economic contributions and the development of early warning systems. In this context, the aim of this study is to develop models that can be used in the yield prediction of wheat varieties widely grown in the Konya Altınova region. Agricultural drought indices obtained from Normalized Difference Vegetation Index (NDVI) and land surface temperature (LST) products of the Terra Moderate Resolution Imaging Spectroradiometer (MODIS) satellite were used to obtain model inputs. These indices are the Vegetation Condition Index (VCI), Temperature Condition Index (TCI), Vegetation Health Index (VHI) and Vegetation Supply Water Index (VSWI). In obtaining the input parameters for the models, the growth periods of the varieties in the region were also considered. Using various machine learning algorithms, 21 yield prediction models for Bayraktar‐2000, 12 for Kızıltan‐91 and 8 for Bezostaya‐1 were presented as alternatives, with model performances (coefficient of determination, R2) ranging between 0.74 and 0.97, 0.73 and 0.96, and 0.69 and 0.87, respectively.

Exploration of mitochondrial autophagy related genes in the diagnosis model construction and molecular marker mining of Alzheimer's disease based on multi-omics integration.

Key features of Alzheimer's disease include neuronal loss, accumulation of beta-amyloid plaques, and formation of neurofibrillary tangles. These changes are due in part to abnormal protein metabolism, particularly the accumulation of amyloid beta. Mitochondria are the energy production centers within cells and are also the main source of oxidative stress. In AD, mitochondrial function is impaired, leading to increased oxidative stress and the production of more reactive oxidative substances, further damaging cells. Mitophagy is an important mechanism for maintaining mitochondrial health, helping to clear damaged mitochondria, prevent the spread of oxidative stress, and reduce abnormal protein aggregation. To this end, this article conducts an integrated analysis based on DNA methylation and transcriptome data of AD. After taking the intersection of the genes where the differential methylation sites are located and the differential genes, machine learning methods were used to build an AD diagnostic model. This article screened five diagnostic genes ATG12, CSNK2A2, CSNK2B, MFN1 and PGAM5 and conducted experimental verification. The diagnostic genes discovered and the diagnostic model constructed in this article can provide reference for the development of clinical diagnostic models for AD.

Perpustakaan sebagai pusat kegiatan keilmuan dan pergerakan mahasiswa dalam novel Babel

Introduction. This paper investigates how the academic library's concepts, functions, and roles as the center of scholarly and student activities are portrayed in the novel Babel by R.F. Kuang. Data Collection Methods. This research used Bengtsson’s qualitative content analysis model. Data was collected through an extensive reading and found 111 data that matched with the research focus. Data Analysis. Data were analyzed through decontextualization with open coding and then recontextualized into 89 data to categorize and interpret. Results and Discussion. The library supported students by being portrayed as a learning commons, co-working space, and makerspace; hence it became the scholarly activity center for scholars. Libraries are not portrayed neutral in providing services and tend to limit students’ research scope and public access to information. The libraries are also used for non-academic activities, such as a source of magical power production and knowledge development center, the center of social and student movements. The library representation in the novel is not only a critique towards academia and its information institutions, but also an example of the library’s negative stereotype. Conclusion. From the author's perspective, the library is portrayed as a center for scholarly activities and directly involved in student political life as it becomes the center of student movements.

Early Detection of Fungicide Resistance Through Sensitivity Testing of Various Fungicide Active Ingredients and Genetic Variation of Downy Mildew-Causing Peronosclerospora maydis from Maize (Corn) Production Centers in Java, Indonesia

Early Detection of Fungicide Resistance Through Sensitivity Testing of Various Fungicide Active Ingredients and Genetic Variation of Downy Mildew-Causing Peronosclerospora maydis from Maize (Corn) Production Centers in Java, Indonesia

Chemical Compositions and Plant Secondary Metabolites of Nyamplung (Calophyllum inophyllum L) Oilseed Press-cake from Different Locations

Abstract The industry of tamanu crude oil results in by-product called tamanu oil cake (TOC). The present study investigates the variation of chemical compositions and plant secondary metabolites of TOC collected from different locations as unconventional feed. The TOC was collected from three districts as follows: Purworejo, Bantul, and Sleman. These districts are the production centre of TCO in Central Java Province. Dry matter and organic matter were not different among locations. The TOC from Sleman had higher crude protein than Purworejo and Bantul (p<0.001; 23.5% vs. 19.9% vs. 12.9%). The crude fiber of TOC from Sleman was the lowest followed by Bantul, and then Purworejo (p=0.001; 10.42% vs. 19.6% vs. 28.1%). The ether extract was higher from Purworejo and Bantul compared to Sleman (p=0.001; 13.9% and 15.6% vs. 5.96%). The TOC from Purworejo and Bantul had higher phenol (p=0.002; 6.13% and 5.36% vs. 3.73%), flavonoid (p=0.002; 6.13% and 5.36% vs. 3.73%), saponin (p=0.023; 0.80% and 0.84% vs. 0.57%), and tannin (p=0.001; 0.90% and 0.83% vs. 0.47%) than from Sleman. Considering chemical composition and plant secondary metabolites, the present study concluded that TOC from Sleman was recommended for poultry feed, while TOC from Purworejo and Bantul was recommended for ruminant feed.

Optimization of Banana Commodities in Sipora Jaya Village Based on Home Industry as a Banana Production Center in West Sumater

Optimization of Banana Commodities in Sipora Jaya Village Based on Home Industry as a Banana Production Center in West Sumater

Application of Machine Learning in Clustering Maize Producing Regions in Indonesia

Maize is considered an important commodity with promising market prospects. Given the importance of maize, there is a need to increase maize production to meet people's needs and maintain price stability. This study aims to group maize production in Indonesia by region, with the hope of finding areas that have the potential to become maize production centers to reduce dependence on imports. The data used in this research was obtained from the Central Statistics Agency, covering information from 34 provinces during the 2017-2021 period. This analysis uses the K-Means method with the Python programming language. The number of groups is determined using the Elbow Method. The results of this research show that there are three categories of maize production regions: regions with low maize production (below average), regions with medium maize production, and regions with high maize production. A total of 25 provinces are in the low production category, eight provinces are in the medium category, and only East Java is in the high production category.

The superior performance of Inpari 42 varieties and the feasibility of rice seeds in supporting food security in South Sumatra Province

Abstract The need for superior and certified source seeds of Inpari 42 in South Sumatra is very high, so it is necessary to increase the availability of these seeds and the number of breeder farmers. The research aims to increase seed availability and test the feasibility of Inpari 42 seed farming to support food security in South Sumatra. The study was conducted in Tulus Ayu Village (irrigated), East OKU Regency, a seed production center area. The B/C and R/C ratios are used to analyze the feasibility of source seed farming. The respondents were farmers using Inpari 42 seed from four agroecosystems and prospective seed breeders. The results showed that the productivity of Inpari 42 reached 6.9-7.1 t ha−1, and the productivity of source seeds was 4 t ha−1. Farming source seeds and Inpari 42 consumption are feasible. The MBCR value of source seeds farming also reached 1.94. The potential of Inpari 42 sources seed farming is also enormous, as evidenced by the distribution of Inpari 42 seed, which increased from 2 ha (irrigated) to 160 ha (irrigated, rainfed, tidal, and swamp). Therefore, support from relevant agencies is needed in the form of capital, technology, and regulations to increase breeder farmers’ capacity.

Supply Chain Efficiency of Red Chili in The Production Center of Bantul Indonesia Using The Performance Masurement System Approach

Abstract This study aims to describe the red chili supply chain in terms of actors and their activities and to analyze the efficiency of the red chili supply chain in Sanden District using the Performance Measurement System (PMS) approach. Sampling of farmers in this study was carried out in stages starting from the sub-district, village, hamlet and farmer levels. Respondents farmers taken deliberately as many as 75 people. Sampling after farmers was carried out using the snowball sampling method with a total of 69 respondents. The data used are primary data and secondary data. Descriptive analysis techniques are used to analyze the red chili supply chain. While the efficiency of the red chili supply chain is analyzed using supply chain efficiency indicators with the Performance Measurement System (PMS) approach which includes production costs, profit and return on investment. The results of this study indicate that the red chili supply chain in Sanden District is formed by three chains with 5 actors namely farmers, auction markets, collectors, retailers, and consumers. Chain 1 is the most efficient in terms of profit and return on investment (ROI). Chains 2 and 3 are the most efficient in terms of production cost indicators. These results can be used by actors to choose the supply chain that provides the highest profit.