bluuebunny/crossref_metadata_2025 huggingface dataset:
Preset Conditional Generative Adversarial Network for Massive MIMO Detection
Authors: Yu Yongzhi , Zhang Shiqi , Shang Jiadong , Wang Ping
Published: November 2023

In recent years, extensive research has been conducted to obtain better detection performance by combining massive multiple‐input multiple‐output (MIMO) signal detection with deep neural network (DNN). However, spatial correlation and channel estimation errors significantly affect the performance of DNN‐based detection methods. In this study, we consider applying conditional generation adversarial network (CGAN) model to massive MIMO signal detection. First, we propose a preset conditional generative adversarial network (PC‐GAN). We construct the dataset with the channel state information (CSI) as a condition preset in the received signal, and train the detector without direct involvement of CSI, which effectively resists the impact of imperfect CSI on the detection performance. Then, we propose a noise removal and preset conditional generative adversarial network (NR‐PC‐GAN) suitable for low‐signal‐to‐noise ratio (SNR) communication scenarios. The noise in the received signal is removed to improve the detection performance of the detector. The numerical results show that PC‐GAN performs well in spatially correlated and imperfect channels. The detection performance of NR‐PC‐GAN is far superior to the other algorithms in low‐SNR scenarios.
BeyondGaiaDR3: Tracing the [α/M] – [M/H] bimodality from the inner to the outer Milky Way disc withGaia-RVS and convolutional neural networks
Authors: Guiglion G. , Nepal S. , Chiappini C. , Khoperskov S. , Traven G. , Queiroz A. B. A. , Steinmetz M. , Valentini M. , Fournier Y. , Vallenari A. , Youakim K. , Bergemann M. , Mészáros S. , Lucatello S. , Sordo R. , Fabbro S. , Minchev I. , Tautvaišienė G. , Mikolaitis Š. , Montalbán J.
Published: November 2023

Context.In June 2022,GaiaDR3 provided the astronomy community with about one million spectra from the Radial Velocity Spectrometer (RVS) covering the CaII triplet region. In the nextGaiadata releases, we anticipate the number of RVS spectra to successively increase from several 10 million spectra to eventually more than 200 million spectra. Thus, stellar spectra are projected to be produced on an ‘industrial scale’, with numbers well above those for current and anticipated ground-based surveys. However, one-third of the published spectra have 15 ≤S /N≤ 25 per pixel such that they pose problems for classical spectral analysis pipelines, and therefore, alternative ways to tap into these large datasets need to be devised.

Aims.We aim to leverage the versatility and capabilities of machine learning techniques for supercharged stellar parametrisation by combiningGaia-RVS spectra with the full set ofGaiaproducts and high-resolution, high-quality ground-based spectroscopic reference datasets.

Methods.We developed a hybrid convolutional neural network (CNN) that combines theGaiaDR3 RVS spectra, photometry (G, G_BP, G_RP), parallaxes, and XP coefficients to derive atmospheric parameters (Teff, log(g) as well as overall [M/H]) and chemical abundances ([Fe/H] and [α/M]). We trained the CNN with a high-quality training sample based on APOGEE DR17 labels.

Results.With this CNN, we derived homogeneous atmospheric parameters and abundances for 886 080 RVS stars that show remarkable precision and accuracy compared to external datasets (such as GALAH and asteroseismology). The CNN is robust against noise in the RVS data, and we derive very precise labels down to S/N =15. We managed to characterise the [α/M] - [M/H] bimodality from the inner regions to the outer parts of the Milky Way, which has never been done using RVS spectra or similar datasets.

Conclusions.This work is the first to combine machine learning with such diverse datasets and paves the way for large-scale machine learning analysis ofGaia-RVS spectra from future data releases. Large, high-quality datasets can be optimally combined thanks to the CNN, thereby realising the full power of spectroscopy, astrometry, and photometry.
How to build a MATLAB demonstrator solving dynamical systems in real-time, with audio output and MIDI control
Authors: Colinot Tom , Vergez Christophe
Published: November 2023

This paper explains and provides code to synthesize and control, in real-time, the audio signals produced by a dynamical system. The code uses only the Matlab programming language. It can be controlled with an external MIDI (Musical Instrument Data Interface) device, such as a MIDI keyboard or wind controller, or with mouse-operated sliders. In addition to the audio output, the demonstrator computes and displays the amplitude and fundamental frequency of the signal, which is useful to quantify the dynamics of the model. For the sake of this example, it is a type of Van der Pol oscillator, but more complex systems can be handled. The demonstrator holds potential for pedagogical and preliminary research applications, for various topics related to dynamical systems: direct and inverse bifurcations, transient effects such as dynamical bifurcations, artifacts introduced by integration schemes, and above all, the dynamics of self-sustained musical instruments.
Sustainable agricultural development through agribusiness approach and provision of location specific technology In North Sulawesi
Authors: Kindangen Jantje G. , Kairupan Agustinus N. , Joseph Gabriel H. , Rawung Jefni B.M. , Indrasti Rita
Published: November 2023

The agricultural sector until the next few decades will still be the basis of economic growth for the community and the regional economy in North Sulawesi. The economic value of businesses in this sector has the potential to increase if all the main actors and supporting actors take on a more professional role. The problem is still weak linkages between sub-systems that injure the mindset of the farming community, Natural Resource Management, and the environment, which in the long run will hinder the sustainability of agricultural development. This article is a review that aims to increase agricultural productivity through agribusiness approaches and site-specific technologies by optimizing the utilization of natural and human resources and implementing sustainable technologies. Literature review and field observations were conducted using secondary data to determine the factors that affect the success of sustainable agricultural development through agribusiness approaches and site-specific technologies. On-farm development can be achieved through sustainable agriculture system approach, implementation of Agricultural Integration, Agroindustry Development, and agribusiness system. The hope of sustainable agricultural development in the future is the availability of unlimited resources, good interaction between agribusiness actors, and an increasingly qualified environment, flexibility in agribusiness activities.
Profile and business performance of people’s laying ducks in Harapan Mulya II farmers’ group in Bekasi Regency of West Java Province
Authors: Rohaeni Eni Siti , Bakrie Bachtar , Ahmad Salfina Nurdin , Hutahaean Lintje , Widaringsih Winwin
Published: November 2023

One of the many farm enterprises in urban and rural locations is raising ducks. Duck farming provides both a source of income and a source of animal protein in the form of meat and eggs. This study aims to evaluate the performance and analysis of the laying duck business in the Pahlawan Setia Village, Tarumajaya District, Bekasi Regency, West Java Province. The study was conducted in the Harapan Mulya II Farmer Group. Surveys and in-depth interviews were used in the investigation. It was found that there are two main types of farmers in the duck industry: large-scale farmers with flocks of 1,000–2,000 ducks and small-scale farmers with herds of 25–100 birds/household flocks. The feed ingredients are primarily rejected bread and shrimp processing wastes (SPW); the average production rate is between 40 and 55 per cent. One of the feed formulations used is 42.86% SPW and 57.14% rejected bread; the feed price was IDR 1,800/kg. It was found that the R/C value for the small-scale farmers was 1.42 and 1.31 for the large-scale. It can be concluded that the laying duck business in the Bekasi Regency region is fruitful and worthwhile.
Comparative Feasibility of Potato Farming By APKP Member and Non-Member Farmers in Purbalingga Regency
Authors: Sriningsih Endang , Mulyani Altri
Published: November 2023

An association of potato farmers in Purbalingga Regency is known as APKP (Purbalingga Potato Farmers Association). APKP was founded in 2017 in Serang Village, Karangreja District, Purbalingga Regency, with a total of 30 potato farmers. With this study, we hope to find out how much money potato farmers in Serang Village, Karangreja District, and Purbalingga Regency make and whether it is even feasible. The study was carried out in the village of Serang in the Purbalingga Regency’s Karangreja District. Because there is an APKP organization in the area that has been actively managing work programs, site selection is done on purpose. The study was carried out between December 2021 and January 2022. Because there are more farmers who are APKP members than respondents, a census is used to determine the respondents. According to the findings, farmers who are APKP members make more money than farmers who are not members. Farmers who are APKP members have a higher R-C ratio for their potato farming operation than farmers who are not APKP members.
Determinants of Rubber Farming Household Consumption A Case Study of Musi Rawas Regency, South Sumatera Province
Authors: Yuliadi Imamudin , Meilita Yola
Published: November 2023

The problem studied is the expenditure pattern of the households engaged in the rubber farming industry in Musi Rawas Regency, South Sumatra Province. The analysis method was a multiple regression model with food and non-food consumption expenditure as the dependent variable and spendable income, the number of family members, and investment in education as independent variables. The findings uncovered that spendable income, and the number of family members were the household expenditure models for food consumption that had a significant impact. Meanwhile, food consumption was unaffected by the educational investment variable. In the non-food consumption model, all variables, i.e., spendable income and educational investment, had a significant effect. Additionally, the expenditure pattern of households engaged in rubber farming showed that they tended to spend more on non-food consumption, such as vehicle fuel and donations that have become the culture or tradition of the local community. Hence, to improve the welfare of rubber farming households and boost their income, this study recommends implementing affirmative policies that ensure price stability.
Leading Commodities for Food Crops in Kulon Progo Regency
Authors: Rachmawatie Dessy , Aprianti Kurnia
Published: November 2023

This study aims to determine the leading commodities in Kulon Progo Regency and provide directions for the development of food crop commodities in Kulon Progo Regency. This analysis is carried out by comparing food crop commodity data at the sub-district level with food crop commodity data at the district level. This research is based on data taken from the Central Statistics Agency (BPS) with a period of 2012-2021. The analytical tools used in this research are Location Quotient, Shift Share, Klasen Typology dan Scalogram. Cropsesults of this analysis can create a cluster to determine the direction of the development of food crops sub-sector commodities in Kulon Progo Regency.
Perceptions Of Farmer Group Members Towards The Implementation Of The Vegetable Alley In Yogyakarta City
Authors: Sriyadi  , Aulina Finka , Hanifah Nurul , Azilah Hamdzah Nor Lailatul
Published: November 2023

Yogyakarta City is one of the areas that implements vegetable alleys to meet people’s food needs. However, in its implementation there are obstacles to the lack of participation of farmer group members. The study aims to determine the perception of the members of the farmer group towards the implementation of the vegetable aisle, and the factors related to the perception of the members of the farmer group towards the implementation of the vegetable aisle. The research was conducted in the Districts of Umbulharjo, Danurejan and Kotagede. In each sub-district, 4 farmer groups were taken and each farmer group was taken by 5 farmers so that a total of 60 respondents. Data obtained through interviews with a questionnaire. Data analysis used descriptive analysis and spearman rank correlation analysis. The research results show that the perception of farmer group members towards the vegetable aisle from technical and economic aspects is quite good, while from health, aesthetics and environmental aspects it is good. It is recommended that members of farmer groups participate more actively in the implementation of vegetable aisles.
Entrepreneurship Characters of Farmer and Rice Farming Performance in Bantul
Authors: Buddhi Satyarini Triwara , Fujiwara Takahiro , Widarti Isti
Published: November 2023

This study aims to know the entrepreneurial character of farmers, analyze farm performance, and analyze the relationship between entrepreneurial character of farmers and business performance of rice farming in Sewon District. The sample in this study was a rice farmer on a Sewon District as many 40 people were taken proportional random sampling. To analyze the entrepreneurial character using descriptive analysis based on data that has been analyzed with an assessment using a Likert scale. Farming performance is measured by using income and profit. Then to find out the relationship of entrepreneurial character of farmers and performance of rice farming using Spearman Rank correlation analysis. The result of the analysis show that the entrepreneurial character of rice farmer in Sewon District is included in the strong category with a percentage score of 84%. Farming rice in Sewon District in the 2021 planting season generates an income of IDR 6,334,762 and a profit of IDR 5,891,198 so that the farm is feasible to operate. The entrepreneurial character of farmers has a positive relationship with the performance of rice farming in Sewon District Bantul Regency.
The Potential for Development of Urban Farming in Supporting Agriculture Sustainability
Authors: Wulandari Retno , Fahridho Muhammad , Moses Tjale Malose
Published: November 2023

In realizing sustainable and environmentally sound urban development, urban farming deserves to be used as part of sustainable urban development. Urban farming can indirectly overcome social problems in urban areas. The role of urban farming can have a positive impact on several aspects, such as the economy, ecology, society, aesthetics, education and tourism. Urban agriculture has considerable potential to be developed. This study aims to determine the potential for developing urban farming in Yogyakarta. Analysis was carried out through quantitative descriptive supported by primary and secondary data. The results showed that urban farming activities were carried out through the cultivation of vegetables, fruit plants, medicinal plants, ornamental plants, fish cultivation, product processing and marketing. Efforts to develop urban farming in the city of Yogyakarta have good potential. Urban farming activities have the potential to be developed into agricultural, educational and tourism activities.
Red Chilli Farming on Beach Sand and Rice Land with Various Irrigation Systems in Bantul
Authors: Risvansuna Fivintari Francy , Ayu Rachmasari Farida , Iriani Ekawati Francy , Rina Kamardiani Diah , Robani Anidah
Published: November 2023

Red chilli is a horticultural crop that is commonly utilized by Indonesian people. In 2019 – 2020, red chilli was the most-produced vegetable in the Special Region of Yogyakarta. The high production is caused by the variety of agroecosystems in the Special Region of Yogyakarta, such as beach sand land, which is optimal for red chilli cultivation. This study compares the costs, revenues, income, profits, feasibility, and risks of red chilli farming on beach sand land and rice fields with shower and non-shower irrigation systems in Kretek District. Sampling was conducted by simple random sampling and a population of 116 farmers. Data analysis used the analysis of costs, receipts, income, profits, feasibility analysis based on R/C, labour productivity and capital productivity, and risk analysis based on the coefficient of variation. The results showed that the non-shower irrigated beach sand land farmers had the greatest cost and highest income, while the showered-irrigated beach sand land farmers had the most profits. Red chilli farming on paddy fields and sand with shower and non-shower irrigation systems in the Kretek subdistrict is deemed feasible based on R/C analysis, labour productivity, and capital productivity. The highest production risk value is the shower-irrigated paddy fields, and the highest cost risk value is the non-shower irrigated beach sand land.
From Local to Global: A Comprehensive Strategy to Boost Cassava Export from Indonesia’s Rural Regions
Authors: Kusuma Paksi Arie , Zahroh Hayati Azizah R.R. , Hayu Agus Putri Andini
Published: November 2023

Employing a participatory action research method, this study provides an in-depth analysis of community development programs in Kemiri Village, Gunungkidul, in the Special Region of Yogyakarta. The research focuses on interventions aimed at enhancing the marketing and packaging skills of farmers engaged in cassava production. Through multi-stakeholder collaboration involving local government, NGOs, and academic institutions, the initiatives have successfully equipped farmers with the skills needed for export-standard packaging. The evaluation phase utilized skill assessment tests and focus group discussions, revealing substantial improvements in farmers’ skill sets. Specifically, the farmers demonstrated a marked ability to understand and implement advanced packaging techniques, thereby meeting international export standards. These skill improvements have enhanced their competitiveness, facilitating their capacity to compete in international markets and contributing to community capacity building. In conclusion, this research underscores the transformative potential of participatory community development programs, particularly in empowering rural farmers with the skills necessary for global market engagement.
Customer Satisfaction Towards Service Quality of Purchasing Chicken Meat On-site and through WhatsApp Services (Study of UD Sulastri)
Authors: Widodo  , Shofi Wicaksono Muhammad , Azilah Hamdzah Nor Lailatul
Published: November 2023

Customer satisfaction is an essential aspect of a large and small-scale business. A high level of satisfaction encourages customers’ product loyalty. The presence of constraints within small enterprises, encompassing various types of services and resources available, promotes investigating the strategies applied to ensure customer satisfaction. This study aimed to compare customer satisfaction towards service quality within purchasing chicken meat on-site and through WhatsApp. The research was conducted at UD Sulastri, one of the chicken meat retailers with high daily demand. Accidental sampling was employed to obtain 56 samples of on-site purchases and 20 on WhatsApp purchases. Assessment of satisfaction was applying a structured questionnaire containing profile questions and indicators related to tangibility, reliability, responsiveness, assurance, and empathy. The results revealed that customers at UD Sulastri were very satisfied with all measured dimensions. The average score of tangibility and empathy on purchases through WhatsApp was higher than on-site purchases. Purchasing through WhatsApp did not involve complex cognitive aspects. Hence, a prompt and efficient response was sufficient to provide customers satisfaction. Future research is suggested adjusting the dimensions based on the specific aspects related to the products to enhance the representativeness of the results.
Community-Based Eco-Friendly Village Governance in Purwosari, Surakarta, Indonesia
Authors: Ramdhon Akhmad , Pilar Naredia Shubuha , Demartoto Argyo
Published: November 2023

Urban villages are an important entity and the need of urban people spatially and socially, but some of them are not eco-friendly. This research analyses the Community-based Eco-friendly Village Governance in Purwosari, Surakarta, Indonesia using Schweitzer’ s Life-Centered Theory of Environment. In this case study research, data and information were obtained through observation, documentation, in-depth interview and Focus Group Discussion with Purwosari villagers, Living Environment Service Office of Surakarta City, and an NGO caring about environment. Following source triangulation, data was analyzed using an interactive model. Result shows the active participation of Purwosari villagers in planning, training, facilitation, follow-up, and evaluation on environment management to reduce environment pollution and damage to achieve eco-friendly residence jointly. They manage, use, and process used plastics into useful products with economic value to surrounding environment such as bag, wallet, tissue box, frame, multifunctional basket, sandal, and glass. They make yard a hydroponic farmland with diverse plants like chili, tomato, and sprout. They connect drainage system from one house to another with concentrated channel model ending up in a river. Systemic participative collaborative attempts are taken by Purwosari villagers to anticipate flood and environment pollution to achieve liveable village.
Characteristics and organoleptic properties of nutmeg (Myristica fragrans) candy coated with edible film
Authors: Layuk Payung , Winanda Elisa , Lintang Meivie , Lukas Amos , Yoseph Gabriel H.
Published: November 2023

Edible Film wrapped candy is safe to consume and can provide a unique taste to the candy. This research aims to determine the characteristics and organoleptic properties of nutmeg candy. Nutmeg pulp slices with weight per volume values of 6.7%, 6.9%, 7.1%, and 7.3% were the first factor in a completely randomized factorial research design and the second factor was tapioca with a concentration of 1.2%, 1.4%, 1.6%, 1, 8% w/v. Characteristics: Edible Film has a thickness of 0.12 mm. elongation 5.75%, tensile strength 24.84 (KPa) and solubility 99.80% and hygroscopic content 7.36% - 10.54%. The organoleptic test results for color, aroma, taste, texture, and overall value ranged from 2.80 (3 neutral) to 3.70 (4 like). The best treatment was a combination of 6.7 grams of sliced nutmeg and 1.8 grams of tapioca with the lowest water content of 1.07%, hygroscopicity of 0.03% and the highest organoleptic test of 4 (like). Candy wrapped in Edible Film can maintain quality and make it easier to consume nutmeg soft candy. One alternative use of nutmeg flesh that has not been utilized optimally is to process it into soft candy.
The appearance of rabbit production given Leucaena leaf flour in the ration
Authors: Polakitan Derek , Kairupan Agustinus N. , Silondae Hasrianti , Paat Paulus C.
Published: November 2023

Feed is one of the most substantial aspects of financing in the rabbit farming business. Rabbits can breed efficiently with cost-effective feed. This study aims to assess the impact of incorporating Leucaena leaf meal into the diet of rabbits on their growth and production. The study was conducted at the North Sulawesi Agricultural Technology Assessment Center (AIAT) from March to May 2020, using 16 New Zealand White broiler rabbits, all males over 3 months old. The experimental design used a completely randomized design with four treatments and four replications. The treatments tested were as follows: P1 - 0% Leucaena leaf meal, P2-10% Leucaena leaf meal, P3-20% Leucaena leaf meal, and P4-30% Leucaena leaf meal. Parameters observed include weight gain, feed consumption, and feed conversion. The results are shown as follows: -weight gain: P1-247.45 grams, P2-202.74 grams, P3-196.37 grams, P4-225.70 grams. - Feed consumption: P1-6851.73 grams, P2-6902.88 grams, P3-7590.32 grams, P4-6946.57 grams. - Feed conversion: P1-28.98, P2-37.31, P3-39.98, P4-33.81. These findings suggest that introducing up to 30% Leucaena leaf meal into the diet of rabbits does not adversely affect weight gain.
Effect of edible beeswax coating on tomato (Solanum lycopersicum) postharvest quality
Authors: Wan Ibrahim Wan Nur Salihah Huda , Rudiyanto  , Mohd Shah Ramisah
Published: November 2023

Beeswax, known for its beneficial composition, has found wide application in various industries, including pharmacy, and medicine. The purpose of this study was to determine the efficacy of beeswax as a covering for preserving tomato postharvest quality. Beeswax was applied to tomato fruits in three different dosages (5, 15, and 25 g) and stored for 30 days at 10 °C. The results revealed that uncoated fruits exhibited a higher percentage of weight loss and firmness compared to coated fruits during storage. Coating treatments demonstrated the ability to delay the decline in weight loss, firmness, TSS and the preservation of bioactive compounds such as lycopene. Notably, the fruits coated with 25 g beeswax displayed significantly lower weight loss percentages than the other treatments. These findings suggest that the postharvest application of beeswax has the potential to extend the storage life of tomato fruits by maintaining fruit quality.
Various Modified Treatments on Improving G0 Seed Multiplication in Potato
Authors: Dianawati Meksy , Haryati Yati , Kusyaeri Hamdani Kiki
Published: November 2023

Many tubers are needed for the production of G0 potato seeds because potato seeds are sold in units of quantity. This research aimed to increase the number of tubers in G0 potato seed production. The study was conducted in a plastic house in Lembang, West Bandung, West Java from October 2017 to January 2018. The study used a randomized block design with six replications. The treatments tested were control (A), application of gibberellins (B), cutting of planlet cuttings followed by application of gibberellins (C), application of paclobutrazole (D), and application of paclobutrazole followed by gibberellins (E). Data were analyzed by F test and continued with orthogonal contrast, and correlation test at 95% confidence level and PCA biplot. The results showed that various introduced treatments failed in increasing the number of tuber total. However, the results of PCA biplot showed that C and D treatments were potential to be studied further by increasing the size of small tubers due to their greater number of tubers in total.
Seroprevalence of Brucellosis reactor among goats and sheep on an agribusiness farm in a peri-urban of Bogor, Indonesia
Authors: Martindah Eny , Noor Susan M. , Wahyuwardani Sutiastuti , Sumirah  , Wasito  , Hewajuli Dyah A. , Putri Riyandini , Prihandani Sri S. , Indriawati  , Andriani
Published: November 2023

Brucellosis in small ruminants is a challenge in agriculture, particularly livestock development. In Indonesia, the determinants of the epidemiology of the disease are not widely known or reported. This study aimed to investigate the brucellosis reactor in goats and sheep to provide evidence for controlling the disease. A total of 216 sera samples (102 sheep and 114 goats) from an agribusiness MTF farm in a peri-urban of Bogor were collected and analyzed with RBT and CFT. The results showed that the seroprevalence was high at 21.30% (95% CI; 15.8-26.8). Brucellosis seroprevalence did not differ significantly between goats and sheep with 22.81% and 19.61% respectively, testing positive for the disease. Brucellosis reactor seroprevalence was significantly higher in older animals (over 2 years) than in younger animals (0-2 years), at 30.38% (95% CI, 20.2-40.5) and 16.06% (95% CI, 9.9-22.2), respectively. Increasing age was significantly associated with seropositivity (OR=2.28). These findings indicate a high prevalence of brucellosis reactor among small ruminants in the peri-urban of Bogor, Indonesia, and require appropriate precautions. Given the high density of people in the study site, this could endanger public health and lead to significant production losses.
Foliar Fertilizers as A Method Of Phenolic Ripeness Control
Authors: Boiko Vladimir , Levchenko Svetlana , Cherviak Sofia , Belash Dmitriy , Romanov Aleksandr
Published: November 2023

Due to global warming, there is a problem to correlate technical and phenolic ripeness in modern viticulture. This study is focused on the use of foliar fertilizers in order to combine the time of beginning of phenolic and technical ripeness. The studies were carried out in 2022 in the conditions of mountain-valley coastal viticulture zone of the Republic of Crimea. Foliar top dressing was carried out with the preparation ‘Agrogemo’ (LLC Pontis, Russian Federation) on wine grape varieties ‘Bastardo Magarachskiy’ and ‘Malbec’. The Glories method was used to estimate the ripeness degree of grapes. The principle of it is to determine the total and extractable anthocyanin potential of grapes. Using of foliar fertilizers made it possible to increase the yield of ‘Bastardo Magarachskiy’ variety by 15.3%, and ‘Malbec’ variety by 18.1%. It was found that the experimental treatment scheme contributed to the later beginning of technical ripeness of grapes, i.e. a low percentage of non-extractable anthocyanins from grape skin compared to the control. Base wines obtained from grapes with the use of organic-mineral fertilizer were characterized by the intense color, balanced aroma and flavor.
Engineering particle size distribution of sintered lightweight aggregates manufactured from waste coal combustion ash
Authors: Alqenai Yousif , Risdanareni Puput , Zooyousefin Mohammadamin , Nguyen Thuy , Farnam Yaghoob
Published: November 2023

Converting waste coal combustion ash (W-CCA) from power plants into novelty lightweight aggregates (LWA) is a viable and sustainable solution. Utilizing this waste material to produce a useful product for the concrete industry requires that the manufactured LWA adhere to industrial material regulations. This study focuses on engineering laboratory manufactured LWA to achieve aggregate gradation that meets the ASTM C330 standard. A systematic study that manipulates the degree of saturation during W-CCA paste preparation was adopted to understand the effect of moisture on LWA gradation. The degree of saturation was assessed based on the liquid (water) to solid ratio required to manufacture W-CCA paste. The investigation only alters the amount of water and recorded the gradation for fine LWA (FLWA), coarse LWA (CLWA), and combined coarse and fine LWA. L/S ratio of 0.33 achieved ASTM C330 required gradation for FLWA. A combination of L/S ratio of 0.33 and 0.34 achieved ASTM C330 required gradation for combined coarse and fine LWA. Engineering the gradation of LWA to meet ASTM required standard will allow the production of LWA from W-CCA a more attainable and practical product for the construction industry.
Toward the Realization of Concrete Floating Structures for Offshore Wind Power Generation in Japan
Authors: Fujiyama Chikako , Munbua Wichuda
Published: November 2023

In this paper, an overview of the contents of the Design and Construction Guidelines for Concrete Floating Offshore Wind Power Facilities in Japan was provided. According to the guideline, a case study of a concrete floating structure supporting 10MW wind turbines was presented. The structural safety and durability were assessed based on stresses and strains obtained from nonlinear FE analysis even if the design load case applied in this study was limited. It is expected that further detailed examinations of concrete floating structures ultimately contribute to adoption and promotion of concrete floating structures in the world.
Properties of ultra-high-performance mortar containing eco-friendly wollastonite micro-fibers for green and sustainable infrastructure
Authors: Supit Steve W.M , Nishiwaki Tomoya
Published: November 2023

Wollastonite has become one of the potential pozzolanic microfibers material that can be used to improve the characteristics of cement-matrix composites. This study was conducted with the aim to investigate experimentally the properties of high-strength mortar containing wollastonite as an additive material with percentage of 1.2, 2.4, 4.8, and 9.6% by weight of binders. Water and sand to binder ratio of 0.2 and 2.5, respectively, were used to form high-strength mortar specimens for mechanical properties testing including compressive strength and three-point loading on flexural strength test. Microstructural analysis was also conducted to assess the reinforcing effects and hydration products that might be affected due to the inclusion of wollastonite micro-fibers. The results show that mortar with 1.2-4.8% of wollastonite content reached 12% higher resistance on compression load with respect to the control mortar. More significant improvement can be observed in flexural strength results whereas the wollastonite showed its reinforcing capability in bridging the micro-cracks resulted in more ductile and toughness matrix in carrying the high load carrying capacity. Moreover, wollastonite also has a capability to pore refinement as evident from the sorptivity results. Furthermore, wollastonite micro-fibers can be an alternate source material for durability improver that leads to sustainable infrastructure.
Transport Properties of Lightweight Concrete Incorporated with Expanded Clay Aggregate in Marine Environment
Authors: Risdanareni Puput , Rosyidi Ditya Hafidz , Nindyawati Nindyawati , Nazriati Nazriati , Nastiti Syahidah Fani , Munifson Munifson , Abdullah M.M.A.B
Published: November 2023

Employing porous material such as expanded clay lightweight aggregate (EC LWA) as an internal curing agent in the production of mass concrete proof to mitigate early age cracks in resulting concrete. However, introducing EC LWA could increase the porosity of concrete, leading to concrete degradation due to water penetration. Thus, this research aims to investigate the suitable natural aggregate replacement rate with EC LWA in the production of concrete with acceptable mechanical and transport properties. Three replacement rates of 0, 50, and 100% were applied. The water-per-cement ratio of 0.6 was used to produce concrete. The workability of fresh concrete and the compressive strength were tested. The transport properties of concrete were assessed by monitoring the capillary water uptake of concrete. To mimic the marine environment, the concrete sample was immersed in sodium chloride and sodium sulphate for seven days. The result shows that the workability, bulk density, and compressive strength of concrete with 50% EC LWA have a similar value to the reference sample. Moreover, samples with 50% EC LWA also have a slower capillary rate in a sodium chloride environment than in fresh water.
Seismic Vulnerability Evaluation of Existing Structures Using the Rapid Visual Screening Method in Malang City
Authors: Muhammad Dzul Fikri , Alfianto Imam , Santoso Edi , Djatmika Boedya
Published: November 2023

Indonesia is characterized by its volcanic mountain ranges and bordered by several tectonic plates. This geographical setup makes Indonesia susceptible to both tectonic and volcanic earthquakes. The Indonesian National Standardization Body issued the latest earthquake regulations in 2019, leading to changes in the seismic hazard values used as reference in seismic design. As a result of these regulation changes, seismic load designs have been updated. While these regulations are applicable to the planning of new buildings, it’s equally important to assess existing structures to determine if they can withstand the updated seismic loads. This research focuses on evaluating the vulnerability of older buildings constructed before the implementation of the new earthquake regulations. The assessment method employed is Rapid Visual Screening (RVS). This study was conducted in Malang City, as it falls within an area of moderate to high seismicity. After conducting the RVS method, a numerical analysis was performed on a sample of buildings for comparison. The research findings indicate that the examined buildings are still capable of withstanding the updated seismic loads.
Error analysis of Fourier–Legendre and Fourier–Hermite spectral-Galerkin methods for the Vlasov–Poisson system
Authors: Zhang Xiaolong , Wang Li-Lian , Jia Hongli
Published: November 2023

We conduct a rigorous error analysis of the spectral-Galerkin methods for the 1D-1V Vlasov–Poisson system with the velocity variable in both finite and infinite domains. The estimates significantly improve the very limited existing results. We also provide numerical results to demonstrate the effectiveness of the analysed methods.
Energy and Macronutrient Intakes in Young Athletes: A Systematic
Review and Meta-analysis
Authors: Lehmann Lisa , Giacomoni Magali , Del Sordo Giovanna , Raymond Jean-Jacques , Duché Pascale , Margaritis Irène
Published: November 2023

The aim of this study was to conduct a systematic review and meta-analysis of
differences in energy and macronutrient intakes between young athletes and
non-athletes, considering age, gender and sport characteristics. The study
included original research articles that compared energy and macronutrient
intakes of 8 to 18-year-old athletes to non-athletes. Mean difference (MD)
meta-analyses were performed to quantify energy and macronutrient intake
differences between athletes and non-athletes. Eighteen observational studies
were included. Results revealed that the energy and carbohydrate consumption of
athletes was higher than that of non-athletes
(MD=4.65kcal/kg/d, p<0.01 and
MD=1.65% of total energy intake, p<0.01, respectively).
Subgroup analyses revealed a significant effect of total training time on the
observed mean differences between athletes and non-athletes. As practice time
increased, the differences between athletes and non-athletes increased for
carbohydrate and decreased for protein. Sport type analysis revealed a higher
protein intake by mixed sport athletes compared to endurance and power sports.
Analyses also indicated an age effect: the older the athletes, the smaller the
differences between athletes and non-athletes for energy intake. However, the
methods used to match groups and estimate dietary intakes forced us to moderate
the results. More rigorous research methods are needed to define the dietary
intakes of athletes and non-athletes.
Die neue Definition und Klassifikation der pulmonalen Hypertonie
Authors: Douschan Philipp , Egenlauf Benjamin , Ulrich Silvia , Kovacs Gabor , Gall Henning , Grünig Ekkehard , Hager Alfred , Heberling Melanie , Koehler Thomas , Olschewski Horst , Seyfarth Hans-Jürgen , Yogeswaran Athiththan
Published: November 2023

In der Neufassung der ESC/ERS-Leitlinien 2022 zur pulmonalen Hypertonie (PH) kam es zu wesentlichen Änderungen in der hämodynamischen Definition sowie zu einer weiteren Verfeinerung in der Klassifikation des Lungenhochdrucks.

Als bedeutende Neuerung gilt die Einführung eines neuen Grenzwerts des mittleren pulmonalarteriellen Druckes (mPAP) für die Definition der PH. Eine PH wird nun durch eine Erhöhung des mPAP > 20 mmHg, ermittelt durch Rechtsherzkatheter, definiert. Des Weiteren wurde der Grenzwert des pulmonalen Gefäßwiderstands (PVR) zur Definition einer präkapillären PH verringert. Eine präkapilläre PH liegt nun bereits ab einem PVR > 2 WU und einem pulmonalarteriellen Verschlussdruck (PAWP) ≤ 15 mmHg vor. Die zunehmende Evidenz für die klinische Relevanz der pulmonalen Belastungshämodynamik führte schließlich auch zur Wiederaufnahme des Belastungs-PH-Terminus in die Leitlinien. Die Belastungs-PH wird als Verhältnis zum Herzzeitvolumen (CO) über einen pathologischen mPAP/CO-Slope > 3 mmHg/L/min definiert. In der Klassifikation werden weiterhin fünf Gruppen unterschieden: die pulmonalarterielle Hypertonie (Gruppe 1), PH assoziiert mit Linksherzerkrankungen (Gruppe 2), PH assoziiert mit Lungenerkrankungen und/oder Hypoxie (Gruppe 3), PH assoziiert mit pulmonalarterieller Obstruktion (Gruppe 4) und PH mit unklaren und/oder multifaktoriellen Mechanismen (Gruppe 5).

In der folgenden Leitlinienübersetzung soll auf die Neuerungen eingegangen, deren Hintergründe näher beleuchtet und mögliche Schwierigkeiten in ihrer klinischen Anwendung diskutiert werden.
Diagnose Algorithmus der pulmonalen Hypertonie und Screening-Verfahren
Authors: Tello Khodr , Richter Manuel J. , Kremer Nils , Gall Henning , Egenlauf Benjamin , Sorichter Stephan , Heberling Melanie , Douschan Philipp , Hager Alfred , Yogeswaran Athiththan , Behr Jürgen , Xanthouli Panagiota , Held Matthias
Published: November 2023

Die neuen Leitlinien zur Diagnostik und Therapie der pulmonalen Hypertonie umfassen einen neuen diagnostischen Algorithmus und geben dezidierte Empfehlungen zu den erforderlichen Diagnostiken inklusive Screening-Verfahren ab. Diese Empfehlungen werden unter der Schirmherrschaft des PH-DACH von nationalen Experten kommentiert. Diese Kommentare bieten eine zusätzliche Entscheidungshilfe und Hintergrundinformationen und geben eine weitere Orientierung bei der komplexen Diagnostik der pulmonalen Hypertonie.
Revaskularisation vor Defektdeckung – essenzielle Schnittstelle zwischen plastischer Chirurgie und Gefäßchirurgie
Authors: Meyer Alexander , Rother Ulrich , Thamm Oliver C.
Published: November 2023

Komplexe, ischämische Wunden im Bereich der unteren Extremität mit freiliegenden tiefen Strukturen stellen große Herausforderungen an die behandelnden Fachdisziplinen dar. Als Alternative zur Majoramputation ergibt sich für ausgewählte Patienten die Möglichkeit eines kombinierten Verfahrens mittels arterieller Rekonstruktion und nachfolgender mikrochirurgischer Defektdeckung durch eine freie Lappentransplantation. Als arterielle Rekonstruktionsverfahren stehen endovaskuläre oder offen chirurgische Verfahren wie Bypassrekonstruktion oder Implantation eines arteriovenösen Loops als Vorbereitung für die Defektdeckung zur Verfügung. Ziel der arteriellen Rekonstruktion ist die Schaffung einer ausreichenden Perfusion zur Defektdeckung an der Extremität sowie die Schaffung von Anschlussgefäßen für die Lappentransplantation. Die Auswahl des Lappens richtet sich u. a. nach der Größe und Ausdehnung des Defektes sowie nach dem Vorhandensein einer Osteomyelitis. Dies kann ein- oder
zweizeitig erfolgen. In Zentren ist dieses kombinierte Vorgehen als sichere Methode etabliert. Die Mikroperfusionsanalyse des Gewebes mittels Indocyaningrün erhöht nochmals die Sicherheit des Verfahrens und kann Perfusionsdefizite aufzeigen. Das kombinierte Verfahren mittels arterieller Rekonstruktion und freiem Gewebetransfer liefert gute Langzeitergebnisse im Hinblick auf amputationsfreies Überleben und postoperative Mobilität. Wichtig für die Indikationsstellung ist eine korrekte Patientenselektion unter Berücksichtigung der Kontraindikationen. Dieses Verfahren sollte für alle mobilen Patienten mit komplexen Weichteildefekten vor einer Majoramputation evaluiert werden.
Volkskrankheit diabetische Retinopathie
Authors: Spital Georg , Faatz Henrik
Published: November 2023

Die diabetische Retinopathie (DR) ist eine der häufigsten Komplikationen von Diabetes mellitus und eine der häufigsten Ursachen einer Sehminderung im Erwerbsalter in der westlichen Welt. Die Behandlung der DR hängt von der Ausprägung ab, daher ist es von großer Bedeutung, die Patienten möglichst früh zu detektieren, um eine frühzeitige Behandlung einzuleiten und das Sehvermögen zu erhalten. Trotz derzeit unzureichender Screeningteilnahme frequentieren Menschen mit Diabetes bereits überdurchschnittlich häufig augenärztliche Praxen und Kliniken. Ihre Betreuung samt Diagnostik und Therapie nimmt seit Jahren einen wachsenden Anteil der augenärztlichen Tätigkeit ein. Da weltweit die Diabetesprävalenz dramatisch zunimmt und auch für Deutschland eine weitere Zunahme prognostiziert wird, dürfte die Herausforderung für die Augenärztinnen und Augenärzte noch erheblich wachsen. Gleichzeitig werden die diagnostischen Möglichkeiten zur Differenzierung einer DR und die therapeutischen Maßnahmen – gerade mit der IVOM-Therapie (IVOM: intravitreale operative Medikamenteneingabe) – immer aufwendiger, was die zeitliche Belastung im klinischen Alltag erhöht. Die Hoffnung, Versorgungsengpässe zu vermeiden und Screeningraten sowie die Visusprognose bei Patienten mit DR weiter zu verbessern, beruht u. a. auf einem kameraassistierten Screening, unterstützt durch künstliche Intelligenz. Auch eine bessere Diabetesbehandlung, um die Prävalenz der DR zu senken, sowie länger wirksamere Medikamente für die Behandlung einer DR könnten in der Zukunft die Versorgung der Betroffenen verbessern und helfen, augenärztliche Praxen zu entlasten.
Diabetisches Fußsyndrom
Authors: Morbach Stephan , Eckhard Michael , Lobmann Ralf , Müller Eckhard , Reike Heinrich , Risse Alexander , Rümenapf Gerhard , Spraul Maximilian
Published: November 2023

Das diabetische Fußsyndrom umfasst komplexe pathologische Veränderungen am Fuß eines Menschen mit Diabetes mellitus. Schwerwiegende Manifestationen diabetischer Fußprobleme sind Ulzerationen, deformierende Veränderungen des Fußskeletts („Charcot-Fuß“) und immer noch zu oft Amputationen. Ulzera oder Nekrosen entwickeln sich meist als Folge von repetitiver Traumatisierung bei eingeschränktem Druck- und Schmerzempfinden im Rahmen einer diabetischen Polyneuropathie. Bei allen Menschen mit Diabetes sollten daher Füße und Schuhwerk regelmäßig untersucht werden. Wesentliche Komponenten der Behandlung diabetischer Fußulzera sind Stoffwechseloptimierung und Behandlung internistischer Grunderkrankungen, Infektionskontrolle, Debridement avitaler Gewebeanteile, effektive Druckentlastung, stadiengerechte lokale Wundbehandlung, Therapie von Gefäßerkrankungen, fußchirurgische Korrektur von Deformitäten und/oder Fehlstellungen sowie Patientenschulung. Durch ein frühzeitiges multidisziplinäres, multiprofessionelles und transsektorales Vorgehen bei der Behandlung von Fußulzera kann die Häufigkeit von Amputationen bedeutend gesenkt werden. Wichtigste präventive Maßnahme ist die rechtzeitige Identifikation von Risikofüßen und dann deren regelmäßige Selbst- und Fremdkontrolle, um trotz des Verlustes schützender Warnmechanismen im Rahmen der Neuropathie keine akuten Ereignisse zu erleiden.
Standardisierte Akquisition und Dokumentation von Videosequenzen bei der konventionellen Schilddrüsensonografie
Authors: Seifert Philipp , Kühnel Christian , Reißmann Ivonne , Winkens Thomas , Freesmeyer Martin
Published: November 2023

Ultraschall ist die bildgebende Basisdiagnostik zur Beurteilung der Schilddrüse. Aufgrund der hohen Prävalenz struktureller Parenchymveränderungen kommt das Untersuchungsverfahren in Deutschland sehr häufig zum Einsatz, in vielen Fällen im Rahmen von Verlaufskontrollen. Die Beurteilung thyreoidaler Pathologien und deren Dynamik unterliegt einer relevanten Inter- und Intraobservervariabilität. Befunde die während des Live-Ultraschalls nicht identifiziert und aufgezeichnet wurden, können retrospektiv nicht mehr beurteilt werden. Durch die Akquisition und Dokumentation von standardisierten Videosequenzen der Ultraschallbilder (sogenannte Cine Loops), wird eine sekundäre Nachbetrachtung unter Berücksichtigung von Voraufnahmen analog anderer Schnittbildverfahren wie der CT oder MRT möglich. Die Durchführung könnte dabei auch von nichtärztlichem Personal übernommen werden. Das gewonnene Bildmaterial kann im lokalen PACS gespeichert und für die Lehre und Forschung verwendet werden.