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Investigation of processing windows in additive manufacturing of AlSi10Mg for faster production utilizing data-driven modeling
(2022-04-29)
To reduce production time and decrease production cost, the increase of layer thickness is an adequate option in powder bed fusion. In order to determine the relationships between process parameters in laser powder bed fusion (PBF-LB/M) and final porosity in AlSi10Mg, samples were processed following a space-filling experimental design in the present study. A total of 144 samples were fabricated considering layer thicknesses of 30 µm, 45 µm, 60 µm, and 90 µm. Afterwards, porosity was assessed using image analysis and ...
Aufsatz
Effect of Different Treatments on Storage Quality of Celery Petioles
(2023-07-31)
This study was conducted for two seasons 2021 and 2022 to evaluate the influence of the hot water at 45º C or 50º C, chitosan at 0.5% and modified atmosphere packaging (MAP) at 5% O₂ + 5% CO₂, 5% O₂ + 10% CO₂ and passive MAP presented as control on quality attributes and browning of fresh-cut celery petioles during cold storage at 0º C for 16 days. The results indicated that all treatments were effective in reduced weight loss, color changes, discoloration, chlorophyll loss, total microbial count, polyphenol oxidase ...
Aufsatz
Food typology of traditional foods based on millet, sorghum and cowpea from the rural communes of north central region of Burkina Faso
(2023-07-31)
Food vulnerability is a growing plague in developing countries, neglecting local foods. Better knowledge of local foods is necessary to improve their consumption. The objective of this study is to identify the types of local millet, sorghum and cowpea foods in the North Central Region from a socio-cultural perspective. The methodology consisted of organizing 12 focus groups to respond to an individual questionnaire on the socio-cultural characteristics of participants and their knowledge of their millet, sorghum and ...
Aufsatz
Female farmers in the Galapagos: An invisible force
(2023-11-07)
Despite the crucial contributions of women to agriculture and food security, female farmers in the Galapagos Islands face persistent challenges that hinder the recognition and valuation of their work. Furthermore, the lack of gender-disaggregated data tailored to their local and contextual realities presents an ongoing challenge for evidence-based policy formulation, hampering the response to their specific needs and challenges. Taking a departure from the dominant quantitative approach in agricultural research, this ...
Aufsatz
Influence of Surface Mechanical Attrition Treatment (SMAT) on Microstructure, Tensile and Low-Cycle Fatigue Behavior of Additively Manufactured Stainless Steel 316L
(2023-08-29)
Direct Energy Deposition (DED), as one common type of additive manufacturing, is capable of fabricating metallic components close to net-shape with complex geometry. Surface mechanical attrition treatment (SMAT) is an advanced surface treatment technology which is able to yield a nanostructured surface layer characterized by compressive residual stresses and work hardening, thereby improving the fatigue performances of metallic specimens. In the present study, stainless steel 316L specimens were fabricated by DED and ...
Aufsatz
Cooperatives as instruments of smallholder development: Evidence from banana, cocoa, coffee, and palm oil producers in Peru
(2023-11)
Collective action in the agricultural sector of Peru started in the form of agrarian production cooperatives around 1969. Following the collapse of the collectivisation program in the 1980s, external stakeholders helped to form marketing cooperatives in select sectors to discourage coca leaf production. Nowadays, cooperatives are only active in four sectors: banana, cocoa, coffee, and palm oil. Case study evidence of the performance of cooperatives in Peru is mixed, which raises the need for applied research to inform ...
Aufsatz
Newly implemented crop-livestock-forest systems increase available water and aeration in soils of the Brazilian Savannah
(2023-11-21)
There is a growing demand for cropping systems that guarantee food production by improving the use efficiency of natural resources such as soil and water. The crop-livestock-forest (CLF) system is a form of sustainable intensification in which biodiversity and yields are increased on the same area. In this study, the physical-hydric properties of a Ferralsol and Cambisol in Central Brazil within the Savannah biome (Cerrado) were investigated 2 and 1 year after implementation of CLF systems. Soil samples were collected ...
Aufsatz
Exploring the non-genetic factors that affect reproductive traits of Saanen goats in Indonesia
(2023-11)
Adjustment of trait records for different non-genetic factors increases the accuracy of genetic parameters and enables more accurate selection. This study aimed to investigate the non-genetic factors affecting reproductive traits in Saanen goats at the Baturraden breeding centre, Indonesia. The data of 71 Saanen does from the years 2014 to 2021 consisted of reproductive traits, namely, total birth weight (TBW), age at first kidding (AFK), kidding interval (KI), litter size (LS), multiple birth rate (MBR) and kidding ...
Aufsatz
Between cripping and reclaiming
(2022)
Disability Studies promote different feeling strategies pushing for social change towards a more inclusive and less ableist society. There is a utopian touch to this: How can we change the world by feeling differently about disability? Disabled people have discussed how to navigate ableism’s emotional toll probably since the Disability Rights movement’s roots. The paper-at-hand oscillates between two strategies that Disability Studies scholars and activists have advocated for: Cripping – deliberately changing one’s ...
Aufsatz
Access to the learning material enhances learning by means of generating questions: Comparing open- and closed-book conditions
(2020)
Generating questions referring to the learning material is a powerful learning strategy. The present study investigated potential mechanisms behind this effect. Students (N=231) read a text and then generated questions referring to the text in three conditions: (1) open-book (i.e., text accessible), (2) closed-book (i.e., text inaccessible), and (3) cued closed-book (i.e., text inaccessible but keywords provided). After one week, students’ knowledge gain was larger in the open-book and cued closed-book conditions ...