Production Test Research Articles

The macrostructure of narratives produced by children acquiring Finnish Sign Language.

This article investigates the narrative skills of children acquiring Finnish Sign Language (FinSL). Producing a narrative requires vocabulary, the ability to form sentences, and cognitive skills to construct actions in a logical order for the recipient to understand the story. Research has shown that narrative skills are an excellent way of observing a child's language skills, for they reflect both grammatical language skills and the ability to use the language in situationally appropriate ways. This study was conducted using the FinSL Narrative Skills Production Test assessment to observe how narrative skills develop in children between the ages of 4 and 11 who acquire FinSL in their natural language environments. The results show that the narrative skills of children acquiring FinSL develop following the same guidelines found in other signed and spoken languages. Narrative structure and content increase with age.

Emergence of hypervirulent and carbapenem-resistant Klebsiella pneumoniae from 2014 - 2021 in Central and Eastern China: a molecular, biological, and epidemiological study.

In recent years, the hypervirulent and carbapenem-resistant Klebsiella pneumoniae has been increasingly reported worldwide. The objective of this study was to compare the antibiotic resistance and virulence profiles of carbapenem-resistant hypervirulent K.pneumoniae (CR-hvKP) and hypervirulent carbapenem-resistant K.pneumoniae (hv-CRKP) and identify the prevailing strain in clinical settings. In this study, hv-CRKP or CR-hvKP were identified based on the results of whole-genome analysis (WGS), multilocus sequence typing (MLST) and the antimicrobial susceptibility testing. We then compared antibiotic resistance and virulence profiles between CR-hvKP and hv-CRKP through the antimicrobial susceptibility testing and a series of virulence experiments including biofilm formation ability detection method, the resistance test against human serum, siderophore production test, neutrophil phagocytosis assay and Galleria mellonella infection model. Additionally, pathway enrichment analysis was conducted to assess the effect of SNPs on the phenotype. In this study, we categorized 17.4% of hypervirulent and carbapenem-resistant K. pneumoniae strains as CR-hvKP and 82.6% as hv-CRKP. Among them, 84.2% (16/19) of CR-hvKP strains harboring carbapenemase genes exhibited lower imipenem and meropenem MIC values compared to hv-CRKP strains. The virulence potential of hv-CRKP and CR-hvKP was confirmed by using virulence experiments in vitro and in vivo, showing that virulence of the CR-hvKP strains was comparable to that of hv-CRKP strains. Notably, the 90 hv-CRKP strains were classified into 3 different ST types and 8 capsule types, each showing varying degrees of resistance and virulence. We observed that subclonal replacement was within the predominant hv-CRKP clone, with the ST11-KL64 strain, characterized by high-level resistance and virulence emerging as the currently prevailing subclone, replacing ST11-KL47. KEGG enrichment analysis showed that pathways associated with the citrate cycle (TCA cycle), glycolysis/gluconeogenesis, glutathione metabolism, two-component regulatory system, and folate metabolism were significantly enriched among the group expressing different levels of capsular polysaccharides. The hv-CRKP strains exhibited a greater survival advantage in the hospital environment than CR-hvKP strains. Notably, the ST11-KL64 hv-CRKP strain which displayed a high level of resistance and hypervirulence, warrants the most clinical vigilance. Not applicable.

CALCULATION OF TYPE A UNCERTAINTY USING IN-LABORATORY REPEATABILITY FOR DETERMINATION OF WATER CONTEN IN DIESEL

Understanding and managing measurement uncertainty in petroleum testing laboratories is critical to ensuring the accuracy and reliability of test results. Measurement uncertainty is an indicator of the reliability or validity of a measurement result. Here we explore factors contributing to measurement uncertainty, methods for calculating it, and strategies for minimizing it in the context of petroleum product testing. Measurement uncertainty refers to the doubt that exists about the result of any measurement. For every measurement - even with the most advanced equipment - there is always an error, and no measurement can be considered absolutely accurate. In laboratory settings, especially in the analysis of petroleum products, quantification of this uncertainty is essential to meet international standards and ensure the quality and comparability of results. Keywords: uncertainty, quality control, repeatability, standard deviation, in-laboratory repeatability.

A headspace GC-MS method to quantify nitrosamine impurities and precursors in drug products: Method validation and product testing.

Pharmaceutical manufacturers are working to mitigate the formation of nitrosamine impurities in drug products. The work herein describes the development and validation of a headspace GC-MS method according to ICH Q2(R1) guidelines for the detection and quantification of NDMA, NDEA, NDIPA, and NEIPA in drug products. The analytical procedure was further modified to include detection and quantitation of DMF due to the potential decomposition pathway of DMF to form dimethylamine, a known precursor for NDMA formation. The NDMA impurity was detected in the "sartan" class of drug products between 0.1 and 113 ppm. The validated analytical procedure was applied in an investigation of approaches to mitigate nitrosamine formation in metformin drug products. The developed analytical procedures provide another tool for pharmaceutical manufacturers to evaluate drug products for nitrosamine impurities.

The contribution of vocabulary breadth and depth to narrative writing ability: A partial least squares structural equation modelling approach

Despite the well-established role of lexis in proficiency in the four skills, a great deal of research has focused on the importance of vocabulary breadth and depth in reading. Therefore, the neglect of productive skills has motivated recent calls to inspect the impact of lexical dimensions on writing ability. Using Partial Least Squares Structural Equation Modelling (PLS SEM), this study examines the contributions of vocabulary breadth and depth aspects to EFL learners’ narrative writing ability. For this purpose, the researchers administered the Updated Vocabulary Levels Test (the UVLT), the Productive Vocabulary Levels Test (the PVLT), the Word Associates Test (the WAT), and a narrative writing task to 77 EFL undergraduate students. The participants’ scripts were scored, following IELTS analytical band descriptors. Results of the PLS SEM disclosed that vocabulary size and depth explained around 45% of the variance in the writing scores of the subjects. They also revealed that, among the variables examined, receptive vocabulary size was the only statistically significant factor that contributed the most to writing ability. The implications for writing assessment and instruction are discussed.

A multimodal in vitro approach to assess the safety of oral care products using 2D and 3D cellular models

IntroductionPeriodontitis, affecting approximately 3.9 billion individuals globally, significantly impacts quality of life and has raised interest in its potential systemic effects. Sodium perborate, a common component in oral care products for biofilm control, is widely used, though concerns about its safety persist. This study aimed to evaluate the in vitro toxicity of six commercial oral care products and varying concentrations of sodium perborate, utilizing human gingival fibroblasts (HGF) and keratinocytes (HaCat) as cell models.MethodsExperiments were performed in both 2D monolayer and 3D cultures using MTT and electrical impedance assays, adhering to the manufacturer’s recommended exposure time of 30–60 s for product testing. For the reconstructed epidermis model, a prolonged exposure time of 42 min was applied, following the Organization for Economic Cooperation and Development (OECD) Test Guideline 439.ResultsResults indicated that all products and sodium perborate at 1 mg/mL were cytotoxic in monolayer cultures. However, at concentrations relevant to commercial formulations (0.06 mg/mL sodium perborate), no significant toxicity was observed. In contrast, the 3D culture models, including spheroids and reconstructed epidermis, exhibited minimal to no cytotoxic effects for the commercial products, with sodium perborate showing no significant toxicity below 0.1 mg/mL. The reconstructed epidermis model, used as surrogate for oral mucosa, further confirmed that the products were non-irritating, in compliance with OECD TG 439 standards.DiscussionThis study highlights the importance of considering exposure time, dosage, and cellular model when assessing the safety of oral care products. While 2D models are useful for preliminary screenings, 3D models provide a more physiologically relevant assessment, emphasizing the need for robust testing protocols to ensure product safety.

Comparison of microstructural evolution and high temperature oxidation behavior of AlCoCrFeNiTi and AlCoCrFeNiZr high-entropy alloy coatings

In this study, the isothermal oxidation behaviors of HEA coating systems with AlCoCrFeNiTi and AlCoCrFeNiZr contents were evaluated by comparing microstructurally and investigated in terms of potential applications of thermal barrier coatings (TBCs). For this reason, their oxidation resistance under isothermal conditions, as well as diffusion phenomena occurring at the bond and top coating interface, were investigated. CoNiCrAlY bond coating was applied to the surface of a Nickel-based superalloy substrate by high velocity oxygen-fuel (HVOF) spraying. HEA coating materials were produced by using the mechanical alloying (MA) process. The mechanical activated synthesized HEAs were sprayed on a CoNiCrAlY bond coating by Atmospheric Plasma Spraying (APS). The microstructural changes at the coating interface of CoNiCrAlY, AlCoCrFeNiTi and AlCoCrFeNiZr (HEAs) coatings resulting from oxidation processes at 1200 °C for 5, 25, 50 and 100 h, and the formation and growth behaviors of the thermally grown oxide (TGO) layer were investigated. The present results demonstrate a potential of HEAs in TBC applications. After oxidation tests, crystal lattice transformations took place in both coating systems. In the AlCoCrFeNiZr-HEA TBC system, an increase in diffusion rate, oxygen permeability, and consequently TGO layer thickness was observed by the transformation from the cubic lattice structure to a monoclinic lattice structure with a larger volume. In the AlCoCrFeNiTi-HEA TBC system, the transformation of a narrow rhombohedral lattice with tight planes was maintained. Therefore, the TBC system with AlCoCrFeNiTi-HEA has a lower TGO layer thickness compared to the TBC system with AlCoCrFeNiZr-HEA and has a longer service life against oxidation failure at high operating temperatures. As a result of the production, experimental studies and high temperature oxidation test studies under service conditions, it was seen that AlCoCrFeNiTi and AlCoCrFeNiZr-HEA coatings can be used in the structure of TBC systems.

СИНХРОНИЗАЦИЯ ПОДАЧИ СЕМЯН И РАБОЧЕЙ ЖИДКОСТИ В КАМЕРУ СМЕШИВАНИЯ ПРОТРАВЛИВАТЕЛЯ

The results of production tests of the PS-20K-4 seed dresser with a modified electrical control circuit in order to synchronize the supply of seeds and working fluid to the mixing chamber of the treater when it is put into operation are presented. At each start-up of the dressers, the supply of seeds to the chamber is ahead of the supply of working fluid to it due to the inertia of the working bodies of the hydraulic system, especially this is manifested on dressing machines equipped with centrifugal pumps for supplying working fluid (PS-20K-4, PS-22, etc.). To ensure the synchronization of the supply of seeds and working fluid to the mixing chamber, a device is proposed, the main part of which is the PVI-11 time delay relay for switching on the seed disc drive. Before starting the dresser, the time of movement of the liquid from the pump to the sprayer is determined. For the time obtained in this way, a delay is set on the PVI-11 attachment. Production tests have shown the advantage of the treater with changes made to the electrical control circuit. With the factory control scheme of the treater, the total weight of untreated seeds and seeds with reduced completeness of treatment, which are defective, increases with the increase in the installed capacity of the unit from 5 to 20 t/h, respectively from 26.4 to 48 kg at the beginning of each machine start-up. With the established synchronization of the supply of seeds and working fluid to the mixing chamber when starting the dressing machine, there were no defective seeds. Operational, technological, technical and economic evaluations of the unit showed that the shift time utilization factor was τ_c = 0.83, Shift productivity increased by 25 % due to a reduction in the time for additional treatment of untreated and insufficiently treated seeds. The indicators of technical and operational reliability were Ktn = 0.98 and Ken = 0.94, respectively. Reduced costs by 35%, reducing labor costs by 25%. The annual economic effect with 140 hours of operating amounted to 29915.6 thousand rubles.

Exploring Fresh Lettuce (Lactuca sativa) as a Dairy-Free Probiotic Source

Probiotics are living microorganisms that, when given in appropriate amounts, have optimistic effects on body. This study explores the potential of fresh lettuce (Lactuca sativa) leaves as a probiotic source for individuals with dairy allergies. Gram staining and the catalase test were used to identify the bacteria that were recovered from lettuce leaves as gram-positive, catalase-negative strains. The resistance to antibiotics and their capacity to tolerate low pH and bile salt concentrations both essential for surviving the digestive tract were evaluated. The bacteria showed a high tolerance to bile salts and low pH, but they were susceptible to ampicillin, streptomycin, gentamycin, chloramphenicol, and neomycin. Tests for gas production in the presence of glucose revealed no gas production. Molecular techniques such as PCR and 16S rRNA gene sequencing revealed the presence of Enterococcus lactis, Enterococcus durans, Lactobacillus paracasei, and Lactobacillus casei

Comprehensive characterizations of core sediments recovered from Shenhu W17 well in South China sea and its impact on methane hydrate kinetics

Natural Gas Hydrates (NGH) is considered a vast unconventional energy source that holds significant promise in addressing future energy demands. In Shenhu area (located at northern slope of the South China Sea, SCS), there has been conducted a series of further studies of NGH such as exploration, drilling, and twice field production testing. The lithological characteristics of cores from marine sediments and their influence on methane hydrate (MH) formation are relatively unknown and merits further investigation. In this study, we conducted a chain of lithological characterization on the core sediments recovered from Shenhu W17 well, the coring well which located near the 1st NGH field production in SCS. The core sediments are classified as clayey-silt, its median grain size is 6.91 μm, comprising primarily clay minerals, quartz, and calcite. According to X-ray diffraction analysis, the main content of clay minerals is illite-smectite layers, illite, chlorite, and kaolinite, respectively. Porosity of the core sediments is 32.5% and the permeability is 7.8 mD based on mercury intrusion tests. Four types of primary pores are identified based on SEM and QEMSCAN analysis: intergranular pore, intercrystalline pore, intragranular pore, and pores associated with marine fossils. Moreover, the influence of the recovered core sediments (0–40 wt%) on MH formation kinetics were examined with morphology observed to elucidate the MH-core sediments interaction. The induction time was reduced significantly to ∼20 min in the presence of SCS core sediments. A two-stage MH formation behavior is observed with a maximum gas uptake of 134.1 Vg·Vw−1: (a) an initial MH formation at the gas-liquid interface with MH upward growth and fine-grain sediments migration; and (b) a second stage of significant MH growth with layered formation of MH and core sediments. The capillary channels of MH formed facilities the migration of core sediments, which in turn provides additional gas-liquid contact area for MH formation. The study provides valuable insights on the role Shenhu core sediments in MH formation, which is essential for understanding the spatial heterogeneity of NGH in reservoir and for designing suitable production strategy.

Maternal and Paternal Education on Italian Monolingual Toddlers’ Language Skills

Background. Language development in toddlers can be influenced by social interactions in environments and proximal contexts with mothers and fathers. We present the literature on mothers’ and fathers’ education level and socioeconomic status on the child’s language development; further evidence is needed in the Italian-speaking context. Aims. The study aims to confirm the role of mother and father education level on toddlers’ language skills assessed with direct and indirect measures. Methods and Procedures. Participants were 51 Italian-speaking children aged 33 to 41 months. Children were tested with a lexical test (PinG test) for comprehension and production of nouns and predicates and a morpho-syntactic test for grammar comprehension (PCGO). Parents of the children completed a demographic form and the Italian adaptation of the MacArthur-Bates CDI long version. Two series of one-way ANCOVAs were performed to study the role of mothers’ and fathers’ level of education on separate measures of their child’s language. Outcomes and Results. Findings suggest that in most families, mothers’ level of education is higher than fathers’ level of education. There was no significant difference between children of parents with low–middle level of education and children of parents with high level of education for the grammar comprehension tasks (PCGO) and indirect measure of vocabulary production (MacArthur-Bates CDI). However, both mothers’ and fathers’ level of education appears to be significant for the direct measurement of word production. Conclusions and Implications. This study provides new evidence for the role of mothers’ and fathers’ education on the development of word production in children aged 33 to 41 months, contributing to enriching the literature on the Italian context; it lays the groundwork for future research on the social and environmental factors that can affect language development.

Authentic Assessment Instrument on Redox Reactions to Assess Students’ Cognitive Skills

Authentic assessment is an assessment approach that enable students to demonstrate in-depth understanding and solve complex problem using systematic thinking skills, but teachers find it difficult to develop due to limited knowledge and time. The aim of this research is to produce an authentic assessment instrument for redox reaction materials; determine the characteristics, quality, and feasibility. The instrument development model used was a combination of Oriondo & Dallo-Antonio with Cohen Swerdlik. The development stages were assessment planning, instrument construction, and product testing. The research subjects were 155 of 10th-grade students from three public high schools in Bukittinggi, selected using random sampling technique. Data collection techniques were tests and non-test, the instruments were open ended questions and validation sheets. The authentic assessment instrument developed criteria are: (1) can assess students’ higher order thinking skills; (2) integrate knowledge with skills and various scientific disciplines; (3) develop 21st century competencies; and (4) involve real or everyday life contexts for cognitive aspect. The trial results were analyzed using the PCM 1-PL approach at IRT using Winstep and Parscale program. The characteristics of the item were stated fit because it met the acceptance requirements for MNSQ, ZSTD, and PT-Measure Correlation and the difficulty is in a relatively good level. The reliability of the instrument was classified as good, with test reliability of 0.72 and item reliability of 0.96.

Flashcard Development to Improve Learning Outcomes in Private 4th Class Science Learning

This research aims to develop flashcard products equipped with barcodes, test the feasibility of flashcard media in science learning to improve student learning outcomes; and knowing the effectiveness of using flashcard media in increasing average scores. This type of research is Research and Development (R&D) using the Borg & Gall development model which includes eight stages, namely potential and problems, gathering information, product design, design validation, design improvement, product testing, product revision, and usage trials. The subjects of this research were fourth grade students at SDN 01 Bojongkoneng. The research results showed: Flashcard learning media, product validity as seen from the validation results by material expert validators got a percentage of 90%, and media experts got a percentage of 92%; The effectiveness of the product can be seen from the results of student responses which include small group trials getting an average pretest score of 54 and posttest 82, and large group trials getting an average pretest score of 51 and posttest 85. In the small class the score is n- the gain was 0.60 in the medium category, while the large class obtained an n-gain value of 0.68 in the medium category. Thus, the research results show that learning media in the form of flashcards and equipped with barcodes is feasible and effective in learning science and technology as an improvement in student learning outcomes.

The Effect of Steel Over Strength Ratio on Structure Behavior

Seismic design of steel building structures according to SNI 7860:2020 determining the necessary strength of structural members based on the expected yield stress, Ry.Fy, and the expected tensile stress, Rt.Fu. However, the values of Ry and Rt in SNI 7860:2020 are not yet based on the testing of steel products in Indonesia and are still based on the provisions in AISC 341-16. This research was conducted by collecting data on steel tensile test results to obtain the over-strength ratio and then modeling the steel frame building using the over-strength steel provisions of SNI 7860:2020 and based on the tensile test results to determine the difference in structural behavior. Based on the tensile test results, WF300 steel has a yield strength ratio (Ry) of 1.78, which is higher than the SNI specification of 1.5, and a tensile strength ratio (Rt) of 1.35, which is higher than the SNI specification of 1.2. Based on pushover analysis, the deviation value at the initial formation of the plastic hinge on Structure A1 (Ry=1.5) in the x-axis direction of 79.352 mm is smaller than Structure B1 (Ry=1.78) by 94.01 mm. This indicates that the plastic hinge of Structure A1 is formed earlier than Structure B1.

Unified Platform for Automated Tests of Inverter-Based Resources with Harware-in-the-loop

Testing of inverter-based resources (IBRs) faces challenges in establishing standardized procedures across all product development stages. Most of the testing approaches use Hardware-in-the-Loop (HIL) during the early stages independently from the final product testing, which can lead to discrepant results. To solve these issues, this paper proposes a unified platform for automatically testing IBRs. It can be used during all product development stages, from pure simulation to Controller Hardware-in-the-Loop (CHIL) and finally on the complete commercial product, ensuring uniform test procedures with different test setups. A case study describing compliance tests of grid-connection codes of photovoltaic (PV) inverters are presented to demonstrate the proposed approach. Experimental tests were performed in accordance to Brazilian grid-connection codes in an ISO/IEC 17025 accredited laboratory. The results obtained with the proposed platform in CHIL and full-hardware showed high similarity with the ones obtained with the accredited laboratory, validating the proposed approach. In addition, the platform can be used to perform tests not specified in standards and to verify the performance of IBRs in operating conditions that are often difficult to be tested in laboratory. Ensuring consistent test procedures, the platform facilitates comparable results along all the testing stages, reducing the product development cycle.

An Improved Nonnegative Matrix Factorization Algorithm Combined with K-Means for Audio Noise Reduction

Clustering algorithms have the characteristics of being simple and efficient and can complete calculations without a large number of datasets, making them suitable for application in noise reduction processing for audio module mass production testing. In order to solve the problems of the NMF algorithm easily getting stuck in local optimal solutions and difficult feature signal extraction, an improved NMF audio denoising algorithm combined with K-means initialization was designed. Firstly, the Euclidean distance formula of K-means has been improved to extract audio signal features from multiple dimensions. Combined with the initialization strategy of K-means decomposition, the initialization dictionary matrix of the NMF algorithm has been optimized to avoid getting stuck in local optimal solutions and effectively improve the robustness of the algorithm. Secondly, in the sparse coding part of the NMF algorithm, feature extraction expressions are added to solve the problem of noise residue and partial spectral signal loss in audio signals during the operation process. At the same time, the size of the coefficient matrix is limited to reduce operation time and improve the accuracy of feature extraction in high-precision audio signals. Then, comparative experiments were conducted using the NOIZEUS and NOISEX-92 datasets, as well as random noise audio signals. This algorithm improved the signal-to-noise ratio by 10–20 dB and reduced harmonic distortion by approximately −10 dB. Finally, a high-precision audio acquisition unit based on FPGA was designed, and practical applications have shown that it can effectively improve the signal-to-noise ratio of audio signals and reduce harmonic distortion.

HEV in Blood Donors in Switzerland: The Route to Safe Blood Products.

The hepatitis E virus (HEV) is an emerging infectious disease with zoonotic potential, causing acute hepatitis in humans. Infections in healthy individuals are often acute, self-limiting and asymptomatic, thus leading to the underdiagnosis of HEV infections. Asymptomatic HEV infections pose a problem for blood transfusion safety by increasing the risk for transfusion-transmitted HEV infections. Here, we describe the journey from determining the HEV seroprevalence among blood donors to the implementation of routine HEV RNA testing of all blood products in Switzerland in 2018 and summarise the HEV cases detected since. In total, 290 HEV-positive blood donations were detected by mini-pool nucleic acid testing (NAT) in Switzerland in the period of October 2018-December 2023, equal to an incidence of 20.7 per 100,000 donations. Thanks to the implemented scheme, no transfusion-transmitted infections occurred in this period. Furthermore, blood donation monitoring has proven to be an effective means of detecting HEV outbreaks in the general population. HEV cases in Swiss blood donors are caused by two major genotypes, the Swiss-endemic subtypes 3h3 and 3c. Interestingly, 11 HEV cases (5%) were of genotype 3ra, a variant found in wild and farmed rabbits. Our results indicate that mini-pool NAT is an efficient method to reduce the risk of transfusion-transmitted HEV infections.

Investigations on the effect of kaolin catalyst on the yield of various products obtained from pyrolysis of low-density polyethylene (LDPE) wastes and reaction kinetics.

The pyrolysis characteristics of low-density polyethylene (LDPE) wastes were investigated in a batch pyrolyzer in the temperature range of 550-650°C for a varying heating rate (5, 10, 15, 20, and 25°C/min) alone and using kaolin catalyst (10, 15, and 20% w/w). The yield distribution of various products under varying operating conditions was investigated, and the corresponding favourable conditions for maximum yield of pyrolytic oil (PO) were identified. The possible effect of the catalyst on pyrolysis kinetics was explored by extracting activation energies from the TGA experiments. The various model-free iso-conversion methods estimated the activation energy of 162-166kJ/mol during thermal degradation of LDPE, while it shifted to a lower range (138-145kJ/mol) on catalytic treatment. The catalytic pyrolysis with a 20% (by mass) catalyst in a batch pyrolyzer provided the maximum PO yield with the least solid residue at 600°C using a heating rate of 20°C/min, while the temperature of 600°C with 10% catalyst showed the least liquid product with more solid residue. The presence of a catalyst improved the oil quality with transparency and lower viscosity due to lighter hydrocarbons and higher aromatic content. The FTIR analysis detected various organic groups-alkanes, alkenes, cyclic, and aromatics in the oil. GC tests of gaseous products confirmed the gases like hydrogen, propane, butane, and propylene. The present study aims to provide technical know-how for the effective utilization of LDPE wastes towards clean energy sources and create a plastic-free green environment.

Turkish EFL learners’ knowledge, perception, and production of suprafixes as part of lexical competence

Vocabulary and grammar are essential to language proficiency (Richards, 2015). Some word families and grammatical categories can only be distinguished by prosodic properties such as suprafixes. In English, specific noun/adjective-verb pairs, sometimes called disyllabic words, receive primary stress on different syllables. Typically, nouns receive trochaic stress, while verbs receive iambic stress. Research shows that suprafixes are difficult for language learners from diverse linguistic and prosodic backgrounds. Given the scarcity of research in specific contexts (e.g., Turkish EFL), this study explored Turkish EFL learners’ suprafixational knowledge, perception, and production. Participants were B1-level preparatory school students of a prominent state university. Data were collected through a test of knowledge (n=110), a test of perception (n=80), and a test of production (n=50). Results showed poor knowledge, perception, and production of suprafixes among Turkish EFL learners. Minor variations in suprafixational competence were observed in males and females. Additionally, different noun-verb pairs posed a challenge for both genders. The results were discussed, and recommendations for future research were made. The study concludes that Turkish EFL learners must receive suprasegmental training focusing on suprafixes.

Assessing the Opportunities and Risks of DUS and VCU Variety Testing for Sustainable Production through SWOT Analysis Results

Within the European Union (EU), new plant varieties to be included in the Common catalog of a member state have to be registered on the national list after plant variety testing processes to establish whether the candidate variety is distinguishable, uniform, and stable (DUS) and meets the cultivation or use value requirement (VCU). Technical development, climate change, and changing consumer needs, including the detection of GMOs, necessitate the innovation of plant variety testing methods. In our study, we assessed new characters, testing methods, and inclusion of additional data for the potential to benefit the DUS and VCU protocols. To achieve our goal, we asked experts to fill in questionnaires for the DUS and VCU methods currently used for a selection of common crops, including potato, maize, lentil, oilseed rape, and perennial grass. Within the EU-funded “InnoVar” project, partners sent out questionnaires to 19 European Countries and to 3 countries outside Europe. Surveys were aimed at analyzing the strengths, weaknesses, opportunities, and threats (SWOT) of the current methods. With their help, it is possible to look for a new direction, opportunity, and strategy to incorporate, together with the innovative new techniques, into the development of the new methods. Our study demonstrated that the SWOT analysis could be used to achieve the set goals. Results obtained after evaluation of surveys confirmed that introduction of new characters such as cold tolerance, nitrogen and water efficiency, etc. has become necessary, as has the inclusion of new test methods (molecular markers, precision techniques, organic farming). The development of high-yielding, disease and/or pest-resistant plant varieties with good adaptability and the accurate evaluation of genotypes play a crucial role in ensuring that farmers can access high-performing plant varieties and contribute to sustainable food production.