Production Test Research Articles

The Rafael gas-condensate discovery – a potential game-changer in the Canning Basin

The Rafael 1 exploration well discovered an abnormally high-pressured gas-condensate pool in the Kimberley region in late 2021. Data supports a minimum gross gas column of 165 m at the well location trapped within a large faulted four-way closure in a dolomite reservoir sequence with strong similarities and age equivalent to the oil-bearing Ungani Dolomite reservoir in the Ungani Field. A successful production test in March 2022 resulted in sustained natural flows of gas and condensate to surface. The presence of thick sandstones of the Anderson Formation and a complete Laurel section beneath the Meda Unconformity were unexpected based on the pre-drill interpretation. Serendipitously, it provided the perfect geological setting for a significant hydrocarbon accumulation and emphasised the need to consider multiple geological scenarios when evaluating prospects to capture the full range of uncertainties and potential pool sizes. Although the range in size of the contingent resources is wide and requires further drilling for refinement, the Rafael 1 discovery could be one of the most significant onshore gas discoveries since Waitsia 1 and provides impetus and incentive for continued exploration in the basin. Several pathways for commercialisation have been identified linked to the resource size. A comprehensive appraisal program is underway including the recently completed acquisition of a 200 km2 3D seismic survey to optimally locate wells, and plans for drilling to reduce uncertainty and support the first phase of development based on a low case contingent resource that could underpin the energy needs of the Kimberley region.

Analysis of an eligible protocol for bioequivalence testing of two Canine anthelmintics products with two active molecules

This study is intended to analyze the design implemented in the bioequivalence testing of a generic product based on praziquantel and milbemycin oxime. The main objective of the study is to develop a protocol suitable for testing the bioequivalence and bioavailability of a new generic anthelmintic product intended for the therapeutic interchange of the innovative product Milbemax, whose patent has expired. The achievement of the proposed objective was ensured by the implementation of a single-center, cross-over, randomized, two-phase design separated by a break of 30 days between them. The current study was conducted on 22 clinically healthy Siberian Husky dogs. The analysis of the values obtained during the monitoring of the clinical and hematologic parameters, revealed evolutions within the allowed ranges, with the deviations being rare and devoid of clinical or statistical significance. Providing information regarding the field of bioequivalence of two similar antiparasitic products, being aware of the regulations in force as well as their recommendation by the treating veterinarian, in prophylaxis and anthelmintic therapy, is a good strategy to promote the use and acceptance of the new generic drugs.

Development and application of wellbore flow assurance monitoring system for combustible ice production in deepwater

The commercial development of combustible ice, as the most promising strategy energy, requires not only efficient gas production technology but also a safe flow assurance system. For the depressurization development of combustible ice in the sea area, the issues of wellbore fluid carrying sand, hydrate re-formation in the wellbore, and instability of wellbore flow, are the key problems leading to flow obstacles in the wellbore and affecting the normal production. Therefore, some measures must be taken to effectively monitor and analyze the flow situation in the wellbore during the development of combustible ice in the sea. In this paper, a Wellbore Flow Assurance Monitoring System (WFAMS) is developed to display the fluid flow conditions in the wellbore in real-time during the gas hydrate production, including temperature, pressure, flow rate, the carrying sand amount, etc. Furthermore, the system is capable of online monitoring for potential plug risks, including sand plugs and hydrate blockages caused by gas hydrate formation, as well as assessing flow stability. Additionally, it can provide valuable information, such as production adjustment data and the required injection dosage of thermodynamic inhibitors to prevent hydrate formation. In the 2020 South China Sea production test, this system was used for depressurization production and successfully predicted wellbore flow conditions. This enabled field engineers to monitor flow risks and adjust production plans in a timely manner, ensuring smooth test progress.

Production of Exopolysaccharides and İndole Acetic Acid (IAA) by Rhizobacteria and Their Potential against Drought Stress in Upland Rice.

Peatlands are marginal agricultural lands due to highly acidic soil conditions and poor drainage systems. Drought stress is a big problem in peatlands as it can affect plants through poor root development, so technological innovations are needed to increase the productivity and sustainability of upland rice on peatlands. Rhizobacteria can overcome the effects of drought stress by altering root morphology, regulating stress-responsive genes, and producing exopolysaccharides and indole acetic acid (IAA). This study aimed to determine the ability of rhizobacteria in upland rice to produce exopolysaccharides and IAA, identify potential isolates using molecular markers, and prove the effect of rhizobacteria on viability and vigor index in upland rice. Rhizobacterial isolates were grown on yeast extract mannitol broth (YEMB) medium for exopolysaccharides production testing and Nutrient Broth (NB)+L-tryptophan medium for IAA production testing. The selected isolates identify using sequence 16S rRNA. The variables observed in testing the effect of rhizobacteria were germination ability, vigour index, and growth uniformity. EPS-1 isolate is the best production of exopolysaccharides (41.6 mg/ml) and IAA (60.83 ppm). The isolate EPS-1 was identified as Klebsiella variicola using 16S rRNA sequencing and phylogenetic analysis. The isolate EPS-1 can increase the viability and vigor of upland rice seeds. K. variicola is more adaptive and has several functional properties that can be developed as a potential bioagent or biofertilizer to improve soil nutrition, moisture and enhance plant growth. The use of rhizobacteria can reduce dependence on the use of synthetic materials with sustainable agriculture.

Pengembangan Media Praktikum Percobaan Hukum Oersted Pada Materi Elektromagnetik

This research focuses on developing practical media in the form of practical tools for Oersted's Law on electromagnetic materials. The reason for this research is taken from a problem that usually occurs in schools where the facilities and infrastructure are inadequate for carrying out practicums so that it is difficult to explain the concept of electronic materials. This research aims to develop a set of learning media in the form of practical tools about Oersted's Law in electromagnetic material, more precisely material about electromagnetic induction. With this media, students are expected to more easily understand the concept of electromagnetic induction. The practicum media development stages include (1) data collection (2) product design (3) design verification (4) design modification (5) product testing (6) product modification (7) prototype production (8) mass production. The tools and materials used are a compass, battery, wire, nails and wooden planks which are arranged and combined

Solvent Exsolution and Liberation from Different Heavy Oil–Solvent Systems in Bulk Phases and Porous Media: A Comparison Study

In this paper, experimental and numerical studies were conducted to differentiate solvent exsolution and liberation processes from different heavy oil–solvent systems in bulk phases and porous media. Experimentally, two series of constant-composition-expansion (CCE) tests in a PVT cell and differential fluid production (DFP) tests in a sandpacked model were performed and compared in the heavy oil–CO2, heavy oil–CH4, and heavy oil–C3H8 systems. The experimental results showed that the solvent exsolution from each heavy oil–solvent system in the porous media occurred at a higher pressure. The measured bubble-nucleation pressures (Pn) of the heavy oil–CO2 system, heavy oil–CH4 system, and heavy oil–C3H8 system in the porous media were 0.24 MPa, 0.90 MPa, and 0.02 MPa higher than those in the bulk phases, respectively. In addition, the nucleation of CH4 bubbles was found to be more instantaneous than that of CO2 or C3H8 bubbles. Numerically, a robust kinetic reaction model in the commercial CMG-STARS module was utilized to simulate the gas exsolution and liberation processes of the CCE and DFP tests. The respective reaction frequency factors for gas exsolution (rffe) and liberation (rffl) were obtained in the numerical simulations. Higher values of rffe were found for the tests in the porous media in comparison with those in the bulk phases, suggesting that the presence of the porous media facilitated the gas exsolution. The magnitudes of rffe for the three different heavy oil–solvent systems followed the order of CO2 > CH4 > C3H8 in the bulk phases and CH4 > CO2 > C3H8 in the porous media. Hence, CO2 was exsolved from the heavy oil most readily in the bulk phases, whereas CH4 was exsolved from the heavy oil most easily in the porous media. Among the three solvents, CH4 was also found most difficult to be liberated from the heavy oil in the DFP test with the lowest rffl of 0.00019 min−1. This study indicates that foamy-oil evolution processes in the heavy oil reservoirs are rather different from those observed from the bulk-phase tests, such as the PVT tests.

A literature review on the planning and analysis of accelerated degradation testing for mechanical products

High reliability and long life are typical requirements for mechanical products. The performance requirements of mechanical products are increasing as science and technology develop, and the environment and working stress they bear are becoming more diverse. This issue has become one of the bottlenecks for mechanical products in lifespan and reliability generally. The aim of this study is to categorize, examine, and review the most applicable accelerated testing methods for mechanical products. The research status of accelerated modeling methods, statistical analysis, and design optimization of accelerated degradation testing(ADT) technology are reviewed. On the basis of literature analysis, the deficiencies and possible development directions of ADT were summarized and prospected. This work is anticipated to serve as a reference and provide important insights into the reliability of mechanical products.

Okara Yogurt Formulation as Functional Food to Prevent Stunting

Okara is the waste produced during soybean tofu production. To reduce okara waste, it is converted into functional food. Okara yogurt is formulated as a functional food to prevent stunting. The problem in this study is how the okara yogurt formulation can produce protein levels, fat levels, carbohydrate levels, water levels, ash levels, and acidity for the nutritional fulfilment of stunting, how the lactic acid bacterial population in okara yoghurt, and how organoleptic testing of okara yogurt products. This study uses RAL with 6 treatments and 3 repetitions. The data was analyzed statistically using analysis of variance (ANOVA) and continued with the tukey test. Organoleptic tests on selected formulas are Y5 color with value (3.47), Y3 texture with value (3.50), Y3 aroma with value (3.50), Y3 taste with value (3.67) and Y5 liking with value (3.67) per 100 grams. In making okara yogurt, it is recommended to use the selected formula, namely Y3

Effects of task repetition with grammatizing on oral task performance and knowledge development

Abstract This study compared the effects of task repetition only (TR), task repetition with grammatizing (TR+GR), and grammatization with no task repetition (GR) on 94 EFL learners’ oral task performances. Participants’ productions were measured both in terms of complexity, accuracy, and fluency as well as receptive knowledge (measured by an error correction test) and productive knowledge (measured by a sentence-level oral production test) development. Immediately after performing a narrative task, the TR+GR and GR learners were required to restore the target structure, namely the English regular past tense, which had been deleted in a grammatized text. Learners in the TR group received no grammatization, and only the TR+GR and TR groups repeated the same task twice. Results revealed that although both TR conditions led to enhanced receptive knowledge, the TR+GR performed better than the TR in fostering learners’ receptive knowledge and improving accuracy and productive knowledge at a delayed posttest. The GR group improved their receptive knowledge in the immediate posttest, but this improvement tailed off in the delayed posttest. Lastly, the TR+GR group could also improve the complexity and accuracy of their narrative task performances–albeit at the expense of fluency.

Pengembangan Local Stories Book untuk Siswa Kelas 1 Sekolah Dasar Kecamatan Singorojo Kabupaten Kendal

This research aims to develop a local stories book in Indonesian language subjects for grade 1 elementary school students in Singorojo District, Kendal Regency. This research also aims to determine the validity and practicality of the local stories book which was developed according to students' needs. This research uses a development model according to Sugiyono which includes potential and problems, data collection, product design, design validation, design improvement, product testing, and product revision. The data analysis techniques used are quantitative and qualitative, the variables studied include the validity of the local stories book which was developed through validation by expert experts and practicality based on student questionnaire responses. Based on the research results, it was found that (1) the local stories book validity test by material experts obtained an overall score of 87; (2) media expert aspects of book size, book cover design, and book content design received an overall score of 92; (3) and the practicality test based on the student response questionnaire obtained a score of 88.8. Thus, it is hoped that this research can make a contribution to the field of education and provide solutions that can be used by teachers in facing future learning challengesKeywords: Indonesian Book, Local Stories Book

The Effects of Derivational Suffix Instruction on English Vocabulary Knowledge in Thai High School Learners

This study investigated the effect of derivational suffix instruction on vocabulary knowledge. Fifty-eight high school learners were recruited to participate in the study. The learners were divided into control (n = 29) and experimental (n = 29) groups. The experimental group received a Fundamental English II course with an emphasis on derivational suffix instruction, whereas the control group only received a Fundamental English II course. Two receptive and productive derivational suffix tests were designed and validated to measure high school learners’ suffix knowledge. A questionnaire was also administered to explore the experimental participants’ perceptions of derivational suffix instruction in facilitating vocabulary knowledge. Descriptive and inferential statistics were conducted to analyse the quantitative data, including pair-sample t-tests and independent-sample t-tests. The results showed that high school learners in both groups performed significantly better on the posttest than on the pretest. The results also revealed that experimental learners significantly outperformed their control counterparts. These findings suggest the efficacy of derivational suffix instruction on English vocabulary knowledge in Thai high school learners. In addition, the questionnaire analysis indicated that high school learners had positive perceptions towards derivational suffix instruction as a method to improve their vocabulary knowledge. Together, the current findings highlight the importance of derivational suffixes in vocabulary acquisition and development. Other relevant implications and suggestions for future studies are also discussed.

MARKETING ON WHEY PROTIEN

Whey protein has emerged as a prominent player in the health and fitness industry, recognized for its numerous benefits and versatile applications. This abstract provides an overview of key considerations and strategies involved in the marketing of whey protein products. The marketing of whey protein requires a multifaceted approach that encompasses regulatory compliance, quality control, consumer education, market research, and sustainability practices. Regulatory compliance is essential to ensure adherence to labeling requirements, health claims regulations, and product safety standards across different jurisdictions. Quality control measures play a pivotal role in maintaining product integrity and safety, encompassing raw material testing, manufacturing processes, and finished product testing. Consumer education is critical for dispelling myths and misinformation surrounding whey protein, providing consumers with accurate information about its benefits, usage guidelines, and safety considerations. Market research is indispensable for understanding consumer preferences, identifying market trends, and informing marketing strategies. Sustainability practices are increasingly important considerations, with consumers favoring brands that prioritize ethical sourcing, environmental stewardship, and corporate social responsibility.

Yield has minimal effect on whole-grain mineral density of modern soft wheat compared to production environment, genotype, and test weight

ProblemMillions of people worldwide lack diversified diets and rely on staple foods, like wheat, that are inherently poor in minerals as primary sources of nutrition. Efforts have been made to enhance grain mineral density in wheat through plant breeding and crop management, though there is concern that mineral “dilution” will occur if higher yield is also sought. Much of that concern comes from studies comparing historic and modern wheat genotypes with impactful genetic differences (e.g., tall vs. semi-dwarf), but there is much less clarity in studies focused on modern genotypes. ObjectiveThe objective of this research was to better understand factors affecting concentrations of eight minerals in whole-grain soft white wheat, especially yield. MethodsThis was done by collecting a genetically and environmentally diverse grain mineral dataset and analyzing it in multiple ways. ResultsThere was no significant effect of yield on density of any tested mineral in grain when factors such as production environment and test weight were controlled, though regression coefficients for yield were generally negative. Thus, the negative effect of yield was present, but it was insignificant and small relative to other sources of variation. Production environment had the greatest impact on grain minerals, contributing between 50% and 90% of variation in the data, depending on the mineral. Wheat genotype had an impact on density of most minerals and genotype by environment interactions were common. Achieving genetic gain in elevating grain minerals through plant breeding may be most successful for Zn, P, and Mg, because genotypic variation and heritability were relatively high for these minerals. Further analysis of Zn showed that breeding selection for simultaneously high-Zn, high-yield wheat varieties is possible, because individual wheat varieties tended to have consistent grain Zn relative to the mean, regardless of yield level or production environment. Grain test weight also had a significant impact on concentrations of two minerals (K and Cu). Factors that impact plant health and metabolism, and ultimately grain test weight, are likely to also affect plant mineral uptake and translocation, possibly causing this association. ImplicationsIn summary, this analysis provides evidence that the impact of yield on grain mineral density among modern wheat germplasm is small and insignificant. In the quest to improve the mineral nutrient value of wheat through plant breeding, crop management, and other approaches, the minor negative impact of yield should be considered secondarily to much more significant factors like production environment, wheat genotype, and even test weight.

Considerations in the testing of a minimum viable product in healthcare

AbstractIntroducing a Minimum Viable Product in the market and rapidly testing it proves valuable in assessing its value and potential. This involves experiments, gauging growth, and striving to diminish uncertainty in iterative cycles. The application of these approaches in healthcare, however, faces obstacles due to unique challenges including patient safety concerns and regulatory compliances. This paper undertakes a narrative literature review covering experiences of healthcare professionals and presents guiding considerations for medical startups to use in the market validation of their products.

Development of a new J-PARC-made internal antenna for the J-PARC RF-driven H− ion source

We have been conducting the test of a new J-PARC-made internal antenna for the J-PARC RF-driven cesiated H− ion source. During the test of high-density plasma production by the antenna, we monitored the outgassing characteristics of the antenna by measuring the mass spectrum of the source gas and optical emission spectrum of the plasma. It is confirmed that no remarkable impurities were detected from the new antenna. The observed emittances of the H− beam extracted by using the new antenna were similar to those by using the SNS-made antenna. To accelerate the endurance test of the new antenna, we applied the antenna for the high-density plasma production to the 5% duty factor (1 ms pulse width with 50 Hz repetition rate) with the 2 MHz RF input power of approximately 60 kW at the ion source test stand. These values are much higher than those in the J-PARC nominal operation; 0.8 ms pulse width with 25 Hz repetition rate (the duty factor of 2%) with the RF input power of approximately 30 kW. The paper describes the results of the characteristics of the new J-PARC-made antenna.

Studying Motor Praxis in Children With Varying Levels of Developmental Coordination Disorder

Background and Aims This research aimed to examine the gesture production ability of motor praxis among children with developmental coordination disorder (DCD) and children on the verge of developing DCD and compare it to typical children of the same age and younger. Methods For this reason, 91 boys (6-12 years old) were selected as sample size and divided into five groups (20 children with typical development, 14 children with DCD, 17 children on the verge of developing DCD, 20 typically-developed children aged 8-9 years, and 20 typically-developed children aged 6-7 years). To find the children with DCD, we employed the developmental coordination disorder questionnaire 7th edition (DCDQ-7) and the Bruininks–Oseretsky test of motor Proficiency. The Dewey gesture production test was performed to investigate motor praxis. Data analysis was performed using variance analysis and an independent t test. Results Comparing the subjects’ performance in different conditions showed that their performance in transitive motor praxis was better than intransitive one (P<0.05). Also, the comparison of verbal command and imitation position showed that between the two DCD groups, the performance in the imitation movements was significantly better (P<0.05). While in the same age control group, no significant difference was seen between motor praxis in two conditions (P>0.05). The between-group comparisons showed that the performance of two DCD groups was disrupted compared to that of the control group at the same age. The performance of the DCD group compared to lower-age children with typical development (8-9 years old) was not different at the verbal command condition. In the imitation position condition, the DCD group performed significantly better than the lower-age children groups (P<0.05). Conclusion These results show that DCD subjects have developmental delays in performing motor praxis under verbal command.

Test result of the new ASD2 chips for Phase-II upgrade of the ATLAS MDT chambers at HL-LHC

For the Phase-II upgrade of the ATLAS Muon Spectrometer to High-Luminosity LHC, new front-end readout electronics for the Monitored Drift Tube chambers is required, as the old one no longer meets the demands. The first stage in the Monitored Drift Tubes readout chain is the Amplifier-Shaper-Discriminator chip. For the upgrade, the new ASD2 ASIC chip in IBM 130 nm CMOS technology has been developed. For the ATLAS experiment, 80000 ASD2 chips are produced, which have to be tested before integration in order to obtain the required 50000 well-performing chips in the end. Using a prototype tester board and pre-production ASD2 chips, the overall performance and the influence on programmable parameters is investigated. Based on these results, 1775 production chips are tested to define final optimized cut values for the automated production testing of all chips in the company.

PENGEMBANGAN MEDIA BERBASIS KOMPUTER UNTUK PEMBELAJARAN KIMIA KELAS XI PADA SEKOLAH MENENGAH ATAS

Difficulty learning abstract consepts in material forms of the molecule based on the theory of electron domain and molecular hybridization in the formation of simple covalent coumpounds involving electron is verry small in size. With conventional learning to use the media shaped balloons and images/charta make their experience misconceptions. Make use of computer assisted animations media adobeflash program. The program is able to help students discover and explore the concepts of learning materials to animate the process of formation of the molecules of the compound geometry. The program is easy to obtain and can be used on all computers. Material forms of molecules according to VSEPR theory (valence shell electron pair repulsion) and Hybridization theory contained in the computer based media is aimed at helping students learn to achieve mastery of core competencies which are already contained in the syllabus set by time. Products are developed in accordance with the educational technology area abstract include students in determining the geometry of the steps forming the molecules of the compound. The stages are carried out in the development of media, namely: design learning, create computer based animation media, validate products with product testing. Advice of expert material/content, media expert, design expert, and data from trials of the target group to be enter performance improvement products. Based on the results of the expert validation and testing of the target group can be concluded that the computer –based instructional media products on the molecular forms of material at Senior High School chemistry in particular at ninth grade IPA (Natural Sciences). With regard to these results the school, especially Senior High School 8 Batanghari media products in order to incorporate this learning into the school website that can be accessed by the wider media users for further development. Keyword: Development, Computer based Media, Molecular Forms.

Exploring the Evolution of Malaysian Folklore in Education and Technology: A Perspective through Digital Audiobooks

Folklore, traditionally passed down orally through generations, encapsulates the collective wisdom of Malaysian society rather than belonging to any single individual. With the advent of technology, folk literature has evolved from oral tradition to written records and now to digital formats, adapting its style and delivery to meet diverse needs. Despite concerns, particularly in the Western world, about the potential erasure of folklore by modern technology during the 20th century, it has continued to evolve. This study aims to explore the specific requirements for digital audiobooks in the Malaysian context, create an authentic product tailored to Malaysian digital audiobook users, and evaluate the usability of digital audiobooks in Malaysia. Using a descriptive research methodology, data were collected through surveys and interviews. The Borg & Gall methodology was employed to develop the audiobook through eight sequential steps: preliminary research, planning, product development, product validation, first-stage review, product testing, second-stage review, and distribution. The findings of this study suggest that digital audiobooks hold significant potential in Malaysia, especially in educational contexts, as effective teaching aids. Listening courseware and audiobooks can enhance educators' efficiency, particularly when conveying stories, illustrative tales, or folklore to Malaysian students, especially children. Overall, this study highlights the enduring relevance and adaptability of Malaysian folklore in the digital era, dispelling concerns about its obsolescence due to technological advancements.

Development of Multimedia-Based Sex Education Media in Efforts to Educate Parents in Betung Village, Abab District

This study aims to develop multimedia-based sex education media as a valid and practical parental education effort using the Research and development (RnD) research method, with the Borg and Gall development model implemented in Betung Village, Abab District. There were 21 subjects in the study, with the following stages: initial data collection, product design, product validation, product revision, and product testing. The data collection technique used in this study was a questionnaire which produced a product in the form of animas Sex Education video media. The implementation of animated video media was carried out in two stages, namely one-to-one trials and small group trials. The results of this study are sex education media in the form of animated videos which have a validity level on the language aspect getting a total score of 28 with a percentage of 77%, material aspects getting a total score of 34 with a percentage of 94%, and the media aspect getting a total score of 35 with a percentage of 97%. . Based on the validation results, it can be concluded that the development of sex education media in an effort to educate parents is categorized as very valid or very practical