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We present an ice-penetrating radar data set acquired over the Greenland ice sheet by aircraft during the years 1971, 1972, 1974, 1978, and 1979. The data set comprises over 177,000 km of flight lines and contains a wealth of information on the state of the Greenland ice sheet including information on ice thickness and englacial properties. During data collection in the 1970s, the data were recorded on optical film rolls and in this manuscript, we document the digitization of these film rolls and their associated geographical information. Our digitization of the data enables interaction with and analysis of the data and facilitates comparison with modern-day radar observations. The complete data set in full resolution is available at the Stanford Digital Repository (https://doi.org/10.25740/wm135gp2721) with the associated technical reports (Karlsson et al., 2023). Part of the data set has been quality checked and is available as low-resolution JPG files at The Technical University of Denmark's data repository, DTU Data, with associated geographical information (DOI pending). Here, we release the full data sets to enable the larger community to access and interact with the data. [ABSTRACT FROM AUTHOR]

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The consideration of the service life of reinforced concrete in the different stages of the life cycle assessment LCA of a structure, as a differentiating element, when proceeding with the performance design associated with the in-place aggressive conditions of the environment, has generated new construction challenges. In addition with the development of new regulations that include innovative engineering materials, the incorporation of performance tests and modeling processes to estimate the development of concrete deterioration over time, and construction processes that ensure adequate Quality Assurance and Quality Control QAQC. This has led to infrastructure that could even exceed their period of use, maintenance serviceability levels for more than 100 years. Such is the case, for example, of the Chacao Bridge project, currently underway, in southern Chile. In this paper, the different stages of a project are reviewed considering a holistic approach, concentrating on those aspects that should be inherent to all planning, including complementary to the design and construction process. The stage of control of the deterioration levels through diagnostics, with a defined frequency, and monitoring if relevant, to support at any moment the Structural Health Management SHM. Some cases of service life design of real cases made with own created models are presented. [ABSTRACT FROM AUTHOR]

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Introduction: The increase in the use of medicinal plants has been evidenced in recent decades throughout the world, mainly as plant extracts with therapeutic purposes. To guarantee the quality and efficacy of these extracts, guidelines, and regulations have been established with the purpose to reduce the variability of obtaining processes and ensure their standardization. Aim: To compile current data on the main parameters and methodologies for the standardization of plant extracts and their definition. Methodology: World Health Organization guidelines, Pharmacopoeias and PubMed, Google Scholar, Science Direct, and EBSCOHost databases were used to collect information about extract standardization. The documents were selected according to their publication date (1981-2020), using keywords in English such as "standardization of plant extracts", "standardization of methodologies" and "guidelines for obtaining standardized products". Results: Pharmacopoeias and guidelines of the World Health Organization are the main literature that supported the methodologies for standardization, as well as the limits of parameters related to the quality control of plant extracts. The main parameters established were macro and microscopic evaluation of plant material, foreign matter, ash content, water content, chromatographic analysis, biological analysis, and qualitative and quantitative chemical evaluation. Conclusions: The main guide documents for the standardization of plant extracts are generally accepted by most regulatory agencies in different countries and determine guidelines related to the physicochemical, biological, and analytical chemical characteristics of plant material and extracts. [ABSTRACT FROM AUTHOR]

Computer tomography image quality control assessment take part of Cuban national legislation, which could be difficult to accomplish for many reasons. This work is part of the set-up verifications of "in house tool" (EvaCT) designed to calculate parameters of quality control of CT images (CCCT) in various manufacturer's phantoms, "at distance". For this, the behavior of the established parameters was studied in 17 studies of the stablished CCCT routine with the Mediso PET/SPECT/CT Anyscan Trio equipment, comparing the results using manufacture´s reference values, and/ or the international recommended parameter´s tolerances. The results of the system were compared numerically with those obtained by the manufacturer, for each available related parameter, in the corresponding protocol, and did not show significant differences (p≥0.05). In general, the system showed a satisfactory behavior, taking as reference the values and tolerances of the manufacturer, CECMED and IAEA. The correlation between quality descriptors established with different methodologies was analyzed. The tool showed correspondence with the manufacturer's results, making available a greater number of parameters and more operational conditions to be evaluated. The mean values ±SD characterize these parameters in the equipment and its phantom, and can be used for periodic, independent and remote CCCT verification. [ABSTRACT FROM AUTHOR]

Introduction: surgical deferral since the beginning of the COVID-19 pandemic represents a risk to the health of patients and a challenge for health institutions. The metric of productivity indicators in the operating room, such as the surgical deferral rate, will provide us with information to plan strategies based on scientific evidence that allow us to improve the quality of care. Objective: to determine the surgical deferral rate during the COVID-19 pandemic. Material and methods: a retrospective, descriptive and cross-sectional study was carried out in which 297 patients whose surgeries were deferred during the period from March 11, 2020 to March 10, 2021 were analyzed. Descriptive statistics were employed, using measures of central tendency and dispersion, simple frequencies and proportions. Additionally, a Pareto diagram was made. The information was processed with SPSS v-25.0. Results: the deferral rate was 7.34%. 20.92% of the causes were attributed to the patient, 31.65% to medical causes and 47.49% logistic-administrative. Conclusion: the established causes of surgical deferral are avoidable and reveal failures in the logistical-administrative processes that require continuous improvement plans. [ABSTRACT FROM AUTHOR]

The article offers information on the production of frozen semen at the CIALE "Centro de Inseminación Artificial La Elisa". Topics include the history of semen production at the center; the identification of bulls through a numbering system; and the quality control measures used for fresh and frozen semen.

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For the proper functioning of the Immunohematology Area, an External Quality Control was established since 1973 through a program that evaluates the performance of the laboratories of the Blood Bank and transfusion services that carry out immunohematology tests. This program consists of sending panel cells to participating blood banks or services, which are phenotyped erythrocyte samples previously studied as problem cases but whose results are unknown by the participating laboratories. The processes in which the program is of most importance are determination of the ABO group, determination of Rh, performance of the direct and indirect Coombs test, and pre-transfusion compatibility tests. It was carried out an observational and retrospective study of the results obtained in the 2020 period from 104 units participating in the Immunohematology Quality Control Program of the National Medical Center's Blood Bank. A panel of cells was sent for external quality control of immunohematology every 45 days, resulting in 9 panels for each unit in the studied period. Compliance with the program was observed in the general result (79.6%), i.e., there was a decrease in the participation of the registered units. Of a maximum score of 100% to be obtained, it was observed a general result of 95.3% compliance of the participating units. The results obtained confirm the good general training of the immunohematology laboratories of the participating units. Yet, as in any external control program, it becomes clear that obtaining an erroneous result is a risk that can occur in any laboratory. [ABSTRACT FROM AUTHOR]

The polysaccharides in wine are macromolecules called "protective colloids" that originate both in the cell walls of the grape and in the microorganisms themselves during the fermentation and aging stages; these molecules inhibit or limit the aggregation, flocculation and precipitation of colloidal substances that threaten the final quality of this beverage. The crystallization of tartrate salts is a phenomenon undesired in the oenological industry, this spontaneous precipitation is too slow and unpredictable, and it is characterized by a deposit of crystals at the bottom of the bottles. The structural characteristics of these polysaccharides, and specially mannoproteins, are very important to avoid this problem, mainly due to their ability to stabilize both phenolic compounds, proteins, and the organoleptic properties of wine. The use of different formulations of yeast mannoproteins as a natural functional ingredient in the oenological industry has currently led to great interest on the part of researchers and the fundamental methods for its extraction are using enzymes that destroy the cell walls of the yeast or through physical extractions. Although there are several studies to date that study the influence of the structural characteristics of mannoproteins on the final quality of wine, more research is still needed on the subject. This review focuses on highlighting the latest advances on the influence of these preparations obtained by unconventional methods to relate their structural characteristics and underlying mechanisms with the impact they have on the organoleptic properties of different types of wine. [ABSTRACT FROM AUTHOR]

The existing conditions in the world impose the search for greater effectiveness in the use of energy carriers. On the other hand, every day management control becomes more necessary and essential. Thus, this work was carried out in a hotel in Varadero and its objective is to design energy performance indicators in accordance with hotel facilities for tourism. It is based on the application of a set of theoretical research methods that allow formulating the necessary indicators, with fundamental reference to the NC ISO 50001: 2019. The energy performance indicators for the carriers of electricity and water are determined; as well as the feasibility of carrying out analyzes that contribute to the best management of the installation and to take measures that allow reacting to negative variations. The behavior for the reference year of all the proposed indicators is determined, in a combination of those that depend on the level of occupation and others that are unrelated to this essential variable in tourism. [ABSTRACT FROM AUTHOR]

SME (Small and Medium Enterprises) are becoming more representative in their countries; however, they do not achieve their objectives because they do not have good management, since they do not include a quality system, and they assume that this requires a high investment. Currently, the aim is to adopt Lean methodologies, generally used in large companies, so that this type of business can take advantage of its benefits. Therefore, a Poka Yoke application model is proposed to contribute to the solution of quality problems in a Peruvian brewery SME. Through the DMAIC matrix (Define, Measure, Analyze, Implement, and Control), trouble and solutions are identified, and quality indicators are reduced by more than 30%. The results show that the Lean methodology can be applied in all types of companies and that it can support entrepreneurs who have similar problems. [ABSTRACT FROM AUTHOR]

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Copyright of Profesorado: Revista de Currículum y Formación del Profesorado is the property of Profesorado: Revista de Curriculum y Formacion del Profesorado and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Today more than ever, the audit quality control review is of fundamental importance. Such is the case that the strategy of the International Auditing and Assurance Standards Board (IAASB) for 2020-2023, and its work plan for 2020-2021, establish as one of its objectives that the International Standards constitute the basis for the development of the assignments, in a high-quality framework. In this regard, the objective of the investigation is to analyze, in detail, the activities of the quality control reviewer, in order to propose the criteria that allow determining the most opportune moments, at each stage of the audit, in which they should be applied review procedures; this is a fundamental aspect that will contribute to the quality of the assignments, so these criteria would be periodically reviewed through future research. The research is of an applied type and descriptive level, whose methodology considers as population 20 Peruvian audit firms of the 2022 ranking of the prestigious Leaders League agency, considering a non-probabilistic sample of 7 firms, in which a survey was applied, confirming the aforementioned proposed criteria, as well as their impact on the quality of the order. [ABSTRACT FROM AUTHOR]

To determine the number of rheumatologists per 100,000 inhabitants working in public or private centres in Spain as a whole, and by Autonomous Community and their distribution by age and sex. Cross-sectional study based on the information contained in the database of the Spanish Society of Rheumatology. Quality control was performed by contact (e-mail and telephone call) with the heads of the clinical services of each of the hospitals (public and private). The information analysed was the age, sex and place of work of active rheumatologists in February 2020. The rates of rheumatologists per 100,000 inhabitants were calculated from population data from the National Institute of Statistics. The rate of rheumatology specialists per 100,000 inhabitants in Spain was estimated at 2.17. The percentage of women was 59.7%, with a higher female/male ratio at younger ages. The lowest proportion of specialists per 100,000 inhabitants was in the community of Valencia (1.6), and the highest in Cantabria (3.2). Variations were found in the rate of rheumatologists per 100,000 inhabitants among the Autonomous Communities. The distribution by age and sex showed a tendency towards female rheumatologists, especially in the younger age strata. [ABSTRACT FROM AUTHOR]

The use of natural products for medicinal use has increased in recent years worldwide, Ecuador has followed this trend, many of these products are freely marketed, without a guarantee of safety since a large part of them do not have a certification of Good Manufacturing Practices (GMP), which is a mandatory parameter for any industry that produces natural products for medicinal use. The present article shows the steps to follow from the initial internal audit to verify the status of the company La Colmena based on the Check List which is granted by ARCSA, Ecuador (Agency for Regulation and Sanitary Control) where list the points to be met to obtain the BPM certification and its measures to correct the non-conformities found. The company La Colmena presented 25% of successful parameters in the initial internal audit, once the corrective actions were carried out, 83% compliance was presented, which guarantees that the company provides the market with quality and safe products for consumption. This work aims to develop a GMP protocol to be a guide for other companies in the same sector and qualification. [ABSTRACT FROM AUTHOR]

The objective was to experimentally determine the quality specification limits for the Cucurbita pepo lipid extract, by using the tabulated K method. Using ten consecutive lots, an analysis was carried out of parameters such as specific weight, refractive indexes, acidity, saponification, peroxide, and fatty acid content (palmitic, stearic, oleic and linoleic). The distribution of the data was assessed. Then, the quality specification limits were calculated, for a 95% degree of confidence. The values obtained in the assessment of physical and chemical parameters demonstrated the quality of the extract, by adhering to the normal distribution of data, with probability values above 0.05. Using the tabulated K method were established unilateral quality specification limits to index of acidity and peroxide, fatty acid content, while to specific weight, refractive and saponification indexes were bilateral. The assessed lots of Cucurbita pepo lipid extract have adequate quality, considering the results of the evaluated parameters. The properties of the assessed lots showed a high degree of compliance. [ABSTRACT FROM AUTHOR]

According to current international Good Manufacturing Practice guidelines, ongoing stability testing is required for the market-life of all medicinal licensed products, as part of the Annual Product Quality Review. Taking that into account, samples from one batch a year of the three Policosanol formulations (PPG 5, 10 and 20 mg), stored in Climatic Zone IV conditions, were continuously monitored since 2017, in order to demonstrate stability and quality over their 5-years shelf life. Results showed that these three formulations, packed in polyvinylchloride /aluminium thermo-sealed blisters, fulfilled the specified quality parameters during all the study. Until now, all the assayed batches maintained their values of fatty alcohol content, uniformity of content, disintegration time, color, and microbial content without significant changes with respect to the initial values in all samplings. No evidence of degradation product formation was determined by Gas Chromatography, which is consistent with the fact that no decrease in the fatty alcohol content was observed throughout the study. First included batches, produced in 2017 and stored for five years, showed no evidence of degradation and fulfilled all the specification limits defined in their registration documents. That is consistent with the approved labelled shelf life of these formulations, which had been previously determined by Research and Development studies, before their marketing approval. [ABSTRACT FROM AUTHOR]

Oleozón® Oral, ozonated sunflower oil, is a medicine developed and produced by the National Center for Scientific Research of Cuba. This product, in emulsion form, is widely used with magnificent results in the treatment, among others, of giardiasis and periodontitis. It is well known that Drug Regulatory Bodies require from pharmaceutical manufacturers evidence that these products are produced in a consistent manner, complying with predefined quality specifications. The Product Quality Review (PQR) is part of the evidence they expect to see. The objective of this work was to demonstrate the consistency of the Oleozon® Oral manufacturing process through process controls, a requirement evaluated in the PCR. Statistical methods such as Shewhart charts and mean comparisons were used to analyze the results after one year of work, in accordance with the established quality specifications, and compared with results from previous years. It was concluded that the process of obtaining ozonated sunflower oil in 2020 was under statistical control and that the means of the quality specifications for this year are statistically equal to those of 2019, which demonstrates the consistency of the process of obtaining Oleozon® Oral. [ABSTRACT FROM AUTHOR]

In the manufacturing industry, it is important to reduce machining deviations as soon as possible to avoid the cost associated with reworks. The definition of mathematical models that predict future failures in the diagnosis of combustion engines associated with errors in machining is a way that helps to save time and money in a process. This paper proposes the analysis and establishment of correlations between the deviations of the machining in cylinder heads and the rejections of an engine cold testing in an automotive manufacturing company. To determine the relationships, a sample of heads and engines was measured in two months, and statistical models were established using inferential statistics. It was possible to establish 77 statistical models that allow predicting which machining of the cylinder heads are contributing to the rejects and therefore adjust the corresponding tools. Due to a large amount of data from the results of the 77 models, this article shows only one model which is one of the most representatives. Using this statistical model, it was possible to know which characteristic of the tool should be adjusted in addition it was also possible to know that the test limits for oil pressure have to be adjusted in the engine cold testing. [ABSTRACT FROM AUTHOR]

The present article proposes a system of a quantitative assessment of the ability of inspectors to make correct decisions, applying an R&R study by attributes, with the method of risk analysis, supported by contingency tables and the Cohen Kappa index. Additionally, it establishes a tool to simplify the required calculations and a proposed inspection method that seeks to reduce the variability associated with the inspection process. In this paper, a simulation study is made. We simulate several quality inspectors and three sceneries. Results show a quality level between 95% and 99% was obtained. It is possible to show that reducing the variability of inspection processes results through standardized methods, criteria equalization, and staff training improves the quality level process. The procedure presented and simulated in this article can be applied in the qualitative inspection, such as manufacturing processes as services processes. [ABSTRACT FROM AUTHOR]

The durability of road marking materials is evaluated with tests ranging from field tests, to ones that employ large-scale equipment. These require either significant testing periods or enormous investments. To evaluate abrasion, methods from the general field of paints are used, which presents a shortcoming in the evaluation related to the behavior in the presence of water. This aspect generates an interest in adapting the Aggregate Accelerated Polishing test to evaluate the wear through a weight loss in the paints. Given that this equipment is used in roads, it enabled its use in road quality control laboratories. The resulting values are contrasted with those obtained in the Taber Abraser test and an in-service test carried out for this purpose. Additionally, absorption in water is implemented as an additional parameter. Finally, it is highlighted that adopting the accelerated polishing test allows having an estimation of the behavior in service, with the advantage of being able to test several samples, simultaneously, under the same conditions, finding that the absorption of water is related to the results. [ABSTRACT FROM AUTHOR]

Introduction: In Colombia, panela is an ancestral food obtained by concentration from the extraction of sugarcane juice. Arbuscular Mycorrhizal Fungi (AMF) help the exchange and mobility of nutrients by associating with plants, improving quality and yield in different production systems. Objective: To evaluate the effect of AMF inoculation in sugarcane cultivation on panela yield and quality. Materials and Methods: The study was carried out in Suaita, Santander, under a randomized complete block design, in triplicate with four treatments (T1: Acaulospora mellea, T2: Rhizophagus irregularis, T3: control 50% and T4: control 100% fertilization). The variables in sugarcane were maturity indexes and tons per hectare, and in panela yield, tons per hectare, conversion to panela, reducing sugars, total solids, pH, moisture, sucrose, and soluble phosphorus were determined. Results and Discussion: There were significant differences (P>0.05) in the maturity index with T2 and a higher content of reducing sugars in panela with T1, in the other variables, a benefit of the inoculation with respect to the controls was observed, being T2 the treatment with the highest values in production of stems.ha-1, tons of cane.ha-1 ; and T1 in conversion to panela, reducing sugars, soluble phosphorus and total solids. Conclusions: Interaction of R. irregularis and A. mellea with panela quality and yield was found, obtaining promising results for the use of these microorganisms to enhance the sustainability and competitiveness of sugarcane for panela. [ABSTRACT FROM AUTHOR]

Introduction: In order to improve the quality of raw sugar in the sugar industry and to increase the investment efficiency related to the alternative production of torula yeast, an analysis of the effect and cost of cane payment for its quality is carried out. This is determined, by the results obtained in the laboratory, from the calculation of the yield per cane (RPC). Objective: To determine the effect of cane payment on raw sugar quality and on the investment efficiency of a torula yeast plant in two Cuban sugar mills A and B. Materials and Methods: The global process modeling method is used by means of matrix aggregation of the models of the technological processes’ stages of raw sugar and final molasses production, in two different industrial facilities, using Statgraphics Centurion Software. The evaluation of alternatives of per cent extraction of the juice from the filters in the investments is included. Results and Discussion: When analyzing two types of sugarcane, it is observed that increasing its quality improves both the levels of raw sugar production and the brix of the final honey. This raises profits in the yeast plant in both sugar mills. Conclusions: The importance of cane payment for its quality was demonstrated by increasing the profits of the yeast plant and the sugar mill by1604101.69 USD/year, which exceeds the increase in cane payment, which is 447210.44 USD/year. [ABSTRACT FROM AUTHOR]

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TWith the implementation of the technology in Cuba for manufacture of [18F]Fludeoxyglucose ([18F] FDG), it is incurred for the first time in the country in the production of positronic radiopharmaceuticals obtained from cyclotron. This paper presents the productive flow design of [18F]FDG manufacture at the Specialized Center of Diagnosis and Therapy based on the guidelines established by the Good Manufacturing Practices and the Basic Norms of Radiological Security. In addition, the consistency assessment in production batches is shown, information that complemented the process validation. As a results was obtained that the production process, according to the designed flow, is able to consistently provide an injectable pharmaceutical product of the required quality and that meets its specifications. [ABSTRACT FROM AUTHOR]

The Specialized Center for Diagnosis and Therapy of the Center for Medical Surgical Research, produce [18F]FDG for using in medical imaging technology of Positron Emission Tomography in Cuba. The aim of this work was to evaluate the stability of the product at different time intervals under environmental conditions. [18F]FDG pH, radionuclidic identity and purity, chemical purity, residual solvents, bacterial endotoxins and sterility were evaluated. The results showed that Cuban [18F]FDG was stable in stored conditions, during twelve hours after delivering, between 22 and 25°C of temperature. [ABSTRACT FROM AUTHOR]

The aim of this work is identify the main radionuclides impurities produced at the irradiation of [18O] H2O enriched water with 18 MeV protons in Niobium liquid target with a HAVAR window foil. The main radioisotopes that constitute contaminants in the synthesis process were determined. The efficiency of this process was verified to guarantee a high radionuclidic purity in 18F obtained in the manufacturing process of [18F]FDG, complying with the standards established in the current pharmacopoeias and regulations. [ABSTRACT FROM AUTHOR]

Customer satisfaction is one of the most important aspects today, one of the strategic objectives of the development of logistics systems being the improvement of customer service. In the article, it is to develop the procedure of the assurance model of the process in order to achieve the integration of the same that guarantee the service or product to the end customer. The application is made at the Center for Molecular Immunology, a Cuban biotechnology company. Techniques such as: direct observation, documentary analysis, bibliographic search and the use of software were applied. The Process Assurance Model was used as a tool, which constitutes a way of dynamically ensuring the conditions for the performance of a process, achieving a more comprehensive and flexible analysis, guaranteeing the performance of the process with higher levels of service. [ABSTRACT FROM AUTHOR]

The application of tools and best practices for Quality Management is acknowledged as of great importance for performance improvement on process from Higher Education as well as health care institutions. This research aims to develop a model for improvement management to Research and Innovation System in medical universities. A qualitative and quantitative study was conducted. The research resulted on the identification and conceptualization of interrelated key variables on organizations performance management, and subsequently described a model that integrates quality management tools, focuses on health care research and innovation performance improvement based seeking failure reduction, more efficiency, effectiveness, and control of academic processes. [ABSTRACT FROM AUTHOR]

The Gear Transmissions have allowed the development of increasingly compact, reliable and versatile products. This is largely due to the fact that the communication and adaptation of the mechanical power by means of gears has very special characteristics such as the almost no slippage; the high power capacity with relatively low masses and dimensions, the long service life and reliability, the high performance. This is why we see that it is very necessary for future mechanical designers, who receive extensive training related to the conception, analysis and quality control of the gears supported by the pedagogical proposal that will be presented in this article, which summarizes the calculation criteria and the notions of errors and quality of the toothed transmissions in accordance with international ISO-AGMA standards, as well as the description of an assembly for the verification of quality errors. [ABSTRACT FROM AUTHOR]

Clinical nutrition and food provision in a hospital environment must be regulated by quality management programs that ensure maximum clinical benefit and maximum patient safety. This article gives an overview of quality management in clinical nutrition and hospital feeding. Likewise, keys and critical points to be taken into account in all the processes and threads that are carried out during specialized nutritional support and alimentation of patients are analyzed. [ABSTRACT FROM AUTHOR]

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