Production Centers Research Articles

The effect of the ratio of male to female Broodstock on the production of tilapia (Oreochromis niloticus) Seed

This research was conducted from November to December 2023 at the Production Centre of Pangkajene Fish Seed Institute, Sidenreng Rappang Regency, South Sulawesi Province. The objective of this study was to determine the effect of the ratio of male and female broodstock on tilapia seed production, and to determine the ratio of male and female broodstock that produce the most seed production. The design used was a completely randomised design with 4 treatments and 3 replications. The data obtained were presented in the form of graphs and tables. The effect of treatment was analysed using analysis of variance (ANOVA) followed by Tukey's test. The results of the analysis showed that the ratio of male to female broodstock had a significant effect on tilapia fry production (P < 0.05) Sig = 0.034. The highest seed production was found in treatment C (1 male: 4 females) with an average production of 71,000 seeds. Treatment B (1 male: 3 females), 51,000 seeds, treatment D (1 male: 5 females), 34,000 seeds and treatment A (1 male: 1 female) with an average production of 21,000 seeds. It can be concluded that the ratio of male to female broodstock has a significant effect on the production of nila fish fry (Oreochromis niloticus). The highest fry production was obtained in the ratio 1 male; 4 females.Keywords: Broodstock; Production; Ratio; Seed; Tilapia

Study of the Procurement of Landscape Plant Nurseries in Sukamantri Village Tamansari Sub-district Bogor Regency

Abstract Nurserymen play an important role in the landscape industry by producing and providing plants according to the required specifications. Sukamantri Village is one of the centers of landscape plant production and sales in Bogor Regency. The main problem faced by the nursery is the fluctuating demand for landscape plants, which can cause a shortage or excess of plant stock. This research was conducted in Sukamantri Village, Tamansari Sub-district, Bogor Regency, from November 2022 to February 2023. This study aims to obtain information on the variety of plants in the nurseries and analyze the problems in order to obtain recommendations for the development and sustainability of the nursery. Data obtained through surveys, interviews, and secondary data. They were analyzed quantitatively and qualitatively using the SWOT approach regarding internal and external factors in the procurement of landscape plants. The results show the variety of plants includes indoor and outdoor ornamental plants, herbal plants, and fruit plant seedlings. The problem faced is the decline in domestic and foreign sales. Some of the recommended strategies include developing human resource skills, improving production technology, better planning production, promoting on social media, and expanding the market by strengthening networks.

Modification of Ti3C2Tx nanostructure with KH2PO4 and chitosan for effective removal of strontium from nuclear waste.

Nanostructure titanium carbide MXene (Ti3C2Tx) was modified with KH2PO4 and chitosan to effectively remove strontium from nuclear wastewater. Nuclear waste includes radionuclides of uranium, thorium, strontium, and cesium, which are classified depending on the concentration of radionuclides. Nuclear waste with a high strontium concentration is the production waste of radiopharmaceutical production centers. Ti3C2Tx was synthesized from Ti3AlC2 using HF40% and HF in situ (MILD-Ti3C2Tx) in 24h at 313.15 and 333.15K. Morphology, structure, and functional groups were investigated using the XRD, SEM, EDS, FTIR, and BET analyses. The Sr(II)'s adsorption capacity on Ti3C2Tx-HF and Ti3C2Tx-HF in situ was obtained as 61.9 and 253.5mgg-1, respectively (temperature, 298.15K; pH, 7.00; contact time, 180min; and Sr(II) concentration, 150mgl-1). Ti3C2Tx-HF in situ showed fourfold adsorption due to more hydroxyl functional groups and larger interlayer spacing. Ti3C2Tx was modified with KH2PO4 and chitosan to investigate the mechanism of change of Sr(II)'s adsorption capacity, which increased to 370 and 284mgg-1, respectively. The structural results of modified Ti3C2Tx showed that the surface functional groups increased when modified with chitosan. In addition, modification with KH2PO4, through encapsulating large amounts of KH2PO4 between Ti3C2Tx layers, increased the possibility of Sr(II) diffusion between layers and electrochemical interactions with hydroxyl groups, and thus, increased its adsorption. Some experiments were designed to investigate the effect of parameters like initial concentration of Sr(II), contact time, temperature, and pH solution, as well as modified- and unmodified-Ti3C2Tx on adsorbent. The results revealed that the adsorption process of Sr(II) with pristine and modified-Ti3C2Tx follows pseudo-second-order kinetics and Freundlich heterogeneous isotherm model. Freundlich model isotherm indicates the presence of various functional groups on the surface and between the pristine and modified Ti3C2Tx layers. Electrostatic reactions and intra-sphere complexation were the two dominant mechanisms of the adsorption process.

The Effect of Using Superior Rice Seeds on The Income of paddy Farmers in The Production Center of Bangka Island; Propensity Score Matching Based Analysis

The Effect of Using Superior Rice Seeds on The Income of paddy Farmers in The Production Center of Bangka Island; Propensity Score Matching Based Analysis

Impacts of Climate Change on Logistics and Supply Chains

While the global public is struggling with Covid-19 and the subsequent inflation, war and energy crisis, climate change has turned into a forgotten crisis. However, with the increasing number of disasters caused by extreme weather events in different continents of the world, climate change has started to attract attention all over the world. Extreme weather events such as global warming, floods and hurricanes, which are the result of global climate change, not only affect the lives of societies, but also affect logistics and supply chains. The first spots to see the effects of extreme weather conditions as a result of climate change are the production centers in different parts of the world and the international logistics sector, which ensures that the goods produced in these facilities reach the markets. By this study, the qualitative effects of climate change on supply chains were investigated and this research is expected to shed light on the effects of climate change on international logistics activities.

1950~60년대 문화영화 애니메이션 연구

This paper argues for the need to re-catalog animations in cultural films produced by the National Film Production Center, which are fading into the mists of Korean film history. Given the center’s obligation to promote national policies, it is essential not only to specify when these cultural films were made but also to accurately identify the artists involved in the animations. However, the basic information varies among institutions that introduce these cultural films. First, the role of short animations produced by the National Film Production Center from the 1950s to the 1980s is examined in this paper, with their inception and decline being analyzed through articles published in each era. This paper argues that the first cultural film animation should be identified not as “Cartoon of Killing Rats” (September 1959), but as “Acacia Tree Growing in Korea” (April 1959). Moreover, the migration of animators from the National Film Production Center to private film companies and the government’s dismissive attitude towards cartoons are cited as reasons for the decline. Finally, the relationship between the animations in cultural films and contemporary short animations featured in Daehan News (Korean News) is explored. This paper advocates to expand the research horizons of the cultural films.

A micro-geoarchaeological look at adaptive and glocal socio-economic aspects: the case of Middle Bronze Age Tel Dor, Israel

Adaptative mechanisms used by coastal urban Middle Bronze Age (MBA) settlements in the southern Levant are regularly studied from the point of view of maritime connectivity. Here we look into the adaptive mechanisms of MBA Tel Dor by investigating the utilization of geogenic (rock, soil, sediment) resources for construction — materials used for wall foundations, mudbrick superstructure and wall plaster — and for pottery making. The composition and fabric of archaeological materials were compared to those of local natural sediments from two boreholes. The results show that stones for wall construction relied on the local kurkar, that red-coloured mudbricks were produced from local Carmel coast sediments, while beige-coloured mudbricks were produced by mixing local red sediments with non-coastal calcareous rock fragments, and that wall plaster was made of non-coastal geogenic marl. From a small pilot sample of pottery, six petrofabrics were identified, including the local Carmel coast, along with five other, distant, production centres. These characteristics suggest that while the site’s inhabitants utilized local resources, they were firmly interconnected with regional, ‘global’, Mediterranean networks, suggesting MBA Dor was a glocalized society, and that diversification of resources served as a promotor of resilience for this coastal society, allowing it to thrive for millennia.

Semen microorganisms’ prevalence in tabapuã bulls

The study objective was to characterize the microbiological aspects of raw semen from Tabapuã bulls kept in a semen production center. Five Tabapuã bulls were used, and four ejaculates were collected using the artificial vagina method. Bacterial colonies were quantified and identified by morphotintorial analysis (Gram staining) and identification tests for bacterial isolates. Among the twenty semen samples collected, bacteria genera were identified: Citrobacter sp. (3.03%); Corynebacterium sp. (3.03%); Enterobacter sp. (9.09%); Escherichia sp. (9.09%); Klebsiella sp. (9.09%); Providencia sp. (3.03%); Pseudomonas sp. (12.12%); Staphylococcus sp. (45.46%) and Streptococcus sp. (6.06%). It was possible to observe and identify the microbial agents present in the semen samples.

Development and experimental validation of analytical structures of some simplest fuzzy PI/PD controllers using Bounded Sum aggregation

In this work, utilization of Bounded Sum (BS) as an aggregation operator has been explored in the modeling of the simplest fuzzy two-term (PI/PD) controllers. Analytical structures of eight distinct fuzzy two-term controllers utilizing Larsen Product (LP) or Mamdani Minimum (MM) inference and Center of Area (CoA) defuzzification have been derived. In addition to modeling, analysis of controllers for their properties is conducted. Simulation studies are carried out on two nonlinear dynamic systems to show the effectiveness of the controllers proposed in this work. Apart from this, a real-time experimentation has also been conducted to test the applicability of the proposed controllers.

Inclusion of Women Architects into the Cultural Field of Spanish Competitions: Struggling for Professional Recognition from the Periphery (1978-2008)

A retrospective look at the architecture competitions held and reported in Spain between the years of transition to democracy and the aftermath of the global financial crisis of 2008 allows us to verify, from a sociological and historiographical approach, the progressive inclusion of women into the complex and traditionally patriarchal cultural field of the architecture competition. The end of Franco’s dictatorship, and the growing vitality of the Autonomous Regions prompted the call of numerous open consultations throughout the country. These calls continued throughout the last third of the 20th century, until eventually experiencing a decline in the new millennium. These open and anonymous competitions provided a framework in which many women architects were able to ascend through merit, even attaining important positions within the process: firstly, as recognised participants and later as jury members. Highlighting the value of these women’s contribution to architecture has always been subject to disinterest, hesitancy or even outspoken reticence, typical of an eminently patriarchal structure, to which were added those inherent to any competitive structure where the struggle for the domination of symbolic power is inescapable. On the basis of architectural journal articles and illustrative case studies, this paper reviews the published media conditions of this difficult ascent in which the subordinate territories peripheral to the centres of production of architectural culture—Madrid and Barcelona—proved to be a space of opportunity and competition in which to build professional legitimacy. A great deal of Spanish women architects who were regular contestants achieved their recognition through silent logic, far removed from flashy celebrity, an issue that has left a deep imprint on their ways of approaching the practice of their profession, in general, and of participating in the cultural field of the competition, in particular. From this common thinking, this article aims to pay them a well-deserved tribute.

An Oxygen Supply Is Not Enough: A Qualitative Analysis of a Pressure Swing Adsorption Oxygen Plant Program in Ethiopian Hospitals.

In response to critical gaps in medical oxygen access, 2 pressure swing adsorption (PSA) oxygen production centers were established using an ecosystem-strengthening strategy in Amhara, Ethiopia, in 2019. A qualitative study was conducted to assess enablers and bottlenecks to oxygen access at the hospital level after installation. A variety of hospital staff (clinicians, biomedical professionals, hospital administrators, and procurement teams) across 13 hospitals procuring oxygen from the plants participated in comprehensive, semistructured focus group discussions. A thematic framework analysis approach was used to identify key themes. A total of 101 individuals participated in 26 focus groups in 2021, 2 years after plants were installed. Primary themes were accessibility of supply, affordability, and hospital readiness. Respondents indicated a substantial increase in their hospital's ability to access lower-cost oxygen, with many attributing this to the locality of plants and reduced transportation barriers. However, other challenges persisted, and the emergence of COVID-19 1 year after plant installation and a civil conflict exacerbated supply shortages. Investments in equipment, supplies, and training optimized clinical utilization of oxygen and were highlighted as a need for ongoing investment. To achieve maximum impact, investments in large-scale oxygen systems must be accompanied by strategic plans to transport oxygen, reduce costs to hospitals, and provide support to clinical teams through equipment, supply procurement, and clinical training. These findings support comprehensive ecosystem approaches to strengthening oxygen access for sustainable impact.

PROSPECTS OF CENTRAL ASIAN MARKETS FOR RUSSIAN OIL COMPANIES

This article is devoted to the current state of the oil sector in the Central Asian countries and an assessment of the prospects of their markets for expanding the presence of Russian companies. The author highlights the main factors that determine the current situation in the oil producing and refining industries in the region: the overall availability of energy resources in general and crude oil in particular, property rights to oil producing and refining enterprises and operating oil pipelines, as well as international agreements in this area concluded over the past five years. The article substantiates the conclusion that today the potential of the region as a transport and logistics corridor and a center for oil production and refining remains largely untapped. In this regard, for Russian companies, the greatest interest lies in measures to establish control over pipelines from countries focused on the export of oil and oil products (Kazakhstan and, to a lesser extent, Turkmenistan) and to strengthen the presence in the domestic markets of those countries that focus on importing energy resources (Kyrgyzstan, Tajikistan, Uzbekistan) by creating their own transport and refinement infrastructure.

Phytoplasma Associated with White-backed Planthopper on Rice Plants in Sidrap Regency, South Sulawesi

South Sulawesi is one of the largest rice production centers in Indonesia. Several important diseases of rice plants, such as those caused by viruses and phytoplasmas, can be transmitted by insect vectors, especially leafhoppers and stem plant. Symptoms of diseases caused by viruses and phytoplasmas are quite diverse but visually similar and difficult to distinguish. This study aims to analyze the presence of phytoplasma associated with white-backed planthopper which are commonly found in rice plantations. The research method used is by conducting surveys and explorations of insect samples in six villages in Sidrap District. White-back planthoppers found on rice plantations showing symptoms of yellowing and stunted leaves were sampled for further analysis, including total DNA isolation of insects, standard PCR amplification for insect and Nested-PCR for phytoplasma identification, gene sequencing for both amplicons, and nucleotide analysis using BLAST method and Mega X program. The PCR with CO1 primer successfully amplified a 700 bp amplicon from insects, whereas nested-PCR using fP1/rP7 primers followed by m23SR/R16F2n amplified phytoplasma supposedly around 1800 bp and 1250 bp of 16S RNA gene, respectively. The DNA sequencing analysis results indicate that the insect samples were identified as 83% Sogatella vibix species based on homology percentage analysis using BLAST and Mega X Program. As for the phytoplasma, it leans more towards the 16SrI group or Candidatus phytoplasma asteris (Aster yellows phytoplasma) with a homology percentage of 99%.

First dose optimization study on freezing Anatolian buffalo semen

The main objective of sperm production centers is to produce as many straws as possible from the obtained ejaculates using the optimal dilution rate. To this end, this study is the first to evaluate the effect of different semen extender rates on Anatolian buffalo semen quality. Ejaculates were collected by artificial vagina from three Anatolian buffalo bulls. These ejaculates were divided into three aliquots and filled into 0.25 ml straws with soy-based extenders at concentrations of 35, 25, and 15 million sperm/straw (n=105). The straw samples of different sperm concentrations were frozen. The quality of sperm was evaluated after thawing (37 °C, 30 sec) and following the thermoresistance test (37 °C, 3 h). The post-thaw total motility and progressive motility values were similar between the groups. However, following the thermoresistance test, there was a significant decrease in total motility in the 35 million sperm/straw group, and the progressive motility was significantly higher in the 25 million sperm/straw group. There was no statistically significant difference between the groups in terms of sperm kinetic parameters, except for VSL after thawing, as well as VAP and LIN values following the thermoresistance test. The overall mean PMAI and STR values were the highest in the 25 million sperm/straw group. In conclusion, it is recommended to dilute the Anatolian buffalo semen at a concentration of 25 million/0.25 ml when freezing it with a soy-based semen extender. In addition, it is considered that soy-based extenders compensate for cryo-damage to sperm motility for a short time, and the thermoresistance test should be applied for objective evaluation in dose optimization studies.

Decision-Making Approach to Design a Sustainable Photovoltaic Closed-Loop Supply Chain Considering Market Share for Electric Vehicle Energy

This study aims to develop a model for the closed-loop supply chain of photovoltaic (PV) systems. The primary objective addresses strategic and tactical decision-making using a two-stage approach. To pinpoint suitable locations for solar power plants, the PROMETHEE II method is utilized, which is a component of multi-attribute decision making (MADM) approaches. Next, a multi-objective modeling of the closed-loop PV supply chain is conducted. This model aims to minimize total supply chain costs, reduce environmental impacts, mitigate adverse social effects, maximize the on-time delivery (OTD) of manufactured products, and maximize market share. Additionally, a robust fuzzy mathematical model is introduced to examine the model’s sustainability under various uncertainties. An evaluation of the effectiveness and utility of this model is conducted in Tehran city. Furthermore, a comprehensive analysis of various supply chain costs indicates that production centers have the highest costs, while separation centers have the lowest costs.

The effectiveness of Liliaceae phyllospheric Actinomycetes as biocontrol agent of purple blotch disease (Alternaria porri Ell. Cif) on shallot

Purple blotch, caused by Alternaria porri, affects leaves and tubers, leading to reduced yields. Traditionally, synthetic chemical fungicides were heavily relied upon for control. As an alternative, biocontrol agents like actinomycetes have gained attention. Some actinomycetes can suppress plant pathogens by producing antifungal compounds. This research aimed to investigate the efficacy of phyllosphere actinomycetes from Liliaceae plants as biocontrol agents against purple blotch disease on shallots in the greenhouse. Conducted at the IPB University Plant Bacteriology and Mycology Laboratory and the greenhouse at Bogor Agricultural Development Polytechnic, West Java, the research involved several stages, including pathogen identification, preparation of actinomyces inoculum and A. porri, and application of actinomycetes biocontrol agents to shallots in the greenhouse. A. porri isolates were obtained from shallot production centers in the Brebes area, Central Java. The use of the actinomycetes from the phyllosphere effectively suppressed purple blotch disease, with the lowest area under the disease development curve (AUDPC) recorded at 635.9% for the CFS28 isolate. Lower AUDPC values indicated slower disease progression. Actinomycetes biocontrol agents showed promising efficacy, with the CFS28 isolate achieving the highest efficacy percentage of 78.37%. Additionally, plant growth was significantly enhanced by actinomycete application, with tuber sizes ranging from 1.44 to 2.06 g, fresh weights from 17.63 to 24.72 g, and dry weights of shallot bulbs from 5.43 to 17.96 g. The incubation period for A. porri could be extended by actinomycetes, ranging from 5.43 to 8.5 days for purple blotch symptoms to manifest on shallots. The use of Actinomyces phyllosphere biocontrol agents holds promise for disease control on other plants’ leaves, contributing to environmentally friendly and sustainable agricultural practices.

The effectiveness of Liliaceae phyllospheric Actinomycetes as biocontrol agent of purple blotch disease (Alternaria porri Ell. Cif) on shallot

Purple blotch, caused by Alternaria porri, affects leaves and tubers, leading to reduced yields. Traditionally, synthetic chemical fungicides were heavily relied upon for control. As an alternative, biocontrol agents like actinomycetes have gained attention. Some actinomycetes can suppress plant pathogens by producing antifungal compounds. This research aimed to investigate the efficacy of phyllosphere actinomycetes from Liliaceae plants as biocontrol agents against purple blotch disease on shallots in the greenhouse. Conducted at the IPB University Plant Bacteriology and Mycology Laboratory and the greenhouse at Bogor Agricultural Development Polytechnic, West Java, the research involved several stages, including pathogen identification, preparation of actinomyces inoculum and A. porri, and application of actinomycetes biocontrol agents to shallots in the greenhouse. A. porri isolates were obtained from shallot production centers in the Brebes area, Central Java. The use of the actinomycetes from the phyllosphere effectively suppressed purple blotch disease, with the lowest area under the disease development curve (AUDPC) recorded at 635.9% for the CFS28 isolate. Lower AUDPC values indicated slower disease progression. Actinomycetes biocontrol agents showed promising efficacy, with the CFS28 isolate achieving the highest efficacy percentage of 78.37%. Additionally, plant growth was significantly enhanced by actinomycete application, with tuber sizes ranging from 1.44 to 2.06 g, fresh weights from 17.63 to 24.72 g, and dry weights of shallot bulbs from 5.43 to 17.96 g. The incubation period for A. porri could be extended by actinomycetes, ranging from 5.43 to 8.5 days for purple blotch symptoms to manifest on shallots. The use of Actinomyces phyllosphere biocontrol agents holds promise for disease control on other plants’ leaves, contributing to environmentally friendly and sustainable agricultural practices.

Regeneration of rural rice farmers in Central Java Province

Central Java Province is one of the rice production centers in Java Island which plays a role in supporting national food availability. The phenomenon of a decrease in the number of agricultural business households over 10 years by 16.3 % indicates a shift in the interest of people working in the agricultural sector, switching to other sectors outside the agricultural sector. The lack of interest of the younger generation in farming indicates the phenomenon of a shift in community interest in the agricultural sector. This is inseparable from the regeneration of farmers in rural areas. This research uses the basic method of descriptive analysis. The research location was determined by purposive method so that the district with the largest average harvest area and rice production, namely Grobogan District and the location that reflects the adoption of technology, namely Sukoharjo District. The number of research samples was 250 samples of rice farmers in Central Java Province. Factors affecting the regeneration of rice farmers in Central Java Province were analyzed by SEM PLS. The results of the inner model analysis showed (1) latent variables of individual characteristics, socio-cultural environment, and farmer empowerment significantly positive effect on the performance of rice farmers, (2) economic environment variables and farm management had, a significantly negative effect on the performance of rice farmers, (3) latent variables of socio-cultural environment, economic environment, and performance of rice farmers have a significant positive effect on the regeneration of rice farmers in Central Java Province and (4) variable farmer empowerment has a significant negative effect on the regeneration of rice farmers in Central Java Province. The results of the model fit analysis and quality indices show that the model fit test has been fit (ideal).

Concepciones y prácticas para el arraigo en los centros educativos para la producción total

Rooting is postulated as a category to analyze the conceptions and practices that occur within the framework of the Educational Centers for Total Production (rural alternative secondary schools in the province of Buenos Aires, Argentina) to achieve the permanence of students and their families in rural areas. There are two dimensions of rootedness: that linked to the emotional disposition in relation to the environment and that which involves collective actions to improve living conditions. Methodologically, data generated in field work started in 2016, carried out with a collaborative ethnographic approach, was analyzed. The analysis was carried out by creating emerging categories highlighting the positions of the various actors that participate in these Educational Centers (families, students, officials participated in the opening of these Centers). It is argued that, by establishing roots as an objective that exceeds education, these Educational Centers achieve the permanence of rural families through the development of productive projects and strategies for access to land. In this way, through articulation with an educational institution such as the CEPT, dynamics linked to the enclosure and expulsion of rural families are managed.

Yield and morphological characteristics of cloves from Semarang plantation, Indonesia

Abstract Cloves, originating from Indonesia’s Moluccas Islands, have spread across various regions over time. Semarang, Central Java, is a notable clove production center, showcasing distinct advantages. Despite originating in the 1980s, Semarang’s clove production remains robust, boasting longevity and high yields. This study focuses on Semarang’s clove plantation, which belongs to the Samyo Rahayu Farmers Group in Gebugan Village, Bergas. The research aimed to evaluate clove yield and morphological traits. The methodology involved selecting high-yield blocks followed by the selection of mother trees. Morphological characteristics like canopy shape, stem dimensions, leaf attributes, and inflorescence traits were examined. Additionally, GC-MS analysis identified oil chemical components. Findings revealed an average plant height of 11.72 m and trunk circumference of 115.55 cm. Canopy shape primarily exhibited a cylindrical form with 1-3 main branches. Leaves displayed green, glossy, and smooth textures upon maturity, transitioning from reddish to bright red in their young shoots, with petiole length of 2.17cm, leaf length of 10.96 cm, and leaf width of 4.39 cm and ratio 2.5. Inflorescences followed a short type, with pink to red mature flower tubes, rounded or slightly pointed corollas, and distinctive red corollas – characteristics typical of the Zanzibar type. Inflorescences were characterized by short arrangements, with an average of 12-20 flower buds per inflorescence. There were tree-to-tree fresh flower yield fluctuations between 40 to 100 kg. Dried clove bud with water content 5.73-6.82 % contained oil 14.67 – 17.96 %. Essential oil compounds analysis indicated the presence of 15-20 chemical components, with eugenol constituting over 70%, signifying its primary compound. This population may be recommended as genetic material for breeding high-yielding cloves.