Miracle-dz/UniFAR-FTUs huggingface dataset:
Contribution of free iron particles to PD characteristics in flowing transformer oil at DC voltages

Partial discharge (PD) characteristics of the transformer oil contaminated by metallic particles are relevant to particle movement. The motion characteristics of the particles will change when the oil flows, and hence, the PD characteristics differ from that in stationary oil. In this study, the PD characteristics were investigated at direct current voltages, and the particle trajectories were observed simultaneously. It was found that the number of discharges obviously decreased, but the discharge magnitude slightly increased as the oil flow speed increased. To explain the changes in the PD characteristics, a solid-liquid two-phase flow model was established to simulate the trajectories and the electric field distribution around particles. The experimental observations partially verified the simulated trajectories, which includes two stages, namely sedimentation and the subsequent oscillation-collision stage. With the increase of the flow speed, the sedimentation particles decreased, and the horizontal spacing between two adjacent particle-electrode collisions elongated. Therefore, the total collisions became infrequent, which reduced the number of discharges. Moreover, the higher the flow speed was, the slower the particle approached an electrode. Considering the discharge time lag, the distance between the particle and the electrode at the instant of the PD would increase, which increased the discharge magnitude.
On the Potential of Dynamic Sub-structuring Methods for Model Updating

While purely data-driven assessment is feasible for the first levels of the Structural Health Monitoring (SHM) process, namely damage detection and arguably damage localization, this does not hold true for more advanced processes. The tasks of damage quantification and eventually residual life prognosis are invariably linked to availability of a representation of the system, which bears physical connotation. In this context, it is often desirable to assimilate data and models, into what is often termed a digital twin of the monitored system. One common take to such an end lies in exploitation of structural mechanics models, relying on use of Finite Element approximations. proper updating of these models, and their incorporation in an inverse problem setting may allow for damage quantification and localization, as well as more advanced tasks, including reliability analysis and fatigue assessment. However, this may only be achieved by means of repetitive analyses of the forward model, which implies considerable computational toll, when the model used is a detailed FE representation. In tackling this issue, reduced order models can be adopted, which retain the parameterisation and link to the parameters regulating the physical properties, albeit greatly reducing the computational burden. In this work a detailed FE model of a wind turbine tower is considered, reduced forms of this model are found using both the Craig Bampton and Dual Craig Bampton methods. These reduced order models are then used and compared in a Transitional Markov Chain Monte Carlo procedure to localise and quantify damage which is introduced to the system.
Exploration of establishing rat model of ACLF in human serum albumin-induced cirrhosis

Objective To establish a practical and reproducible animal model of acute-on-chronic liver failure,which is similar to the histopathology in human beings,we attacked the immunological cirrhosis rats with three means.Methods Immunological hepatic cirrhosis was induced by human serum albumin in Wistar rats.Rats with early-stage cirrhosis(fibrosis stage IV) were randomly divided into 4 groups.D-galactosamine(1.2 g/kg) was intraperitoneally administered in group 1(n=6). Rats in group 2(n=6) were treated with lipopolysaccharide(30 mg/kg). D-galactosamine(400 mg/kg) and lipopolysaccharide(100 μg/kg) were simultaneously injected in group 3(n=10),while group 4(n=4) were intravenous injected with human albumin as before.Survival time was observed,and liver injury was assessed by histopathology,as well kidney and lung.Results Hepatic fibrosis was detected after albumin intravenous injection for 6 weeks.Five rats died in group 1 after treatment with D-galactosamine,with survival time of 39 to 52 hours.Histopathology revealed severely adipose degeneration in regenerative nodules,only pelleta necrosis were seen.In group 2,rats experienced lethargy,febrile shaking and diarrhea,with fully recovery after 24 hours,three rats were sacrificed on 3 days,with no signs of necrosis in liver section.In group 3,5 rats died from severe liver failure,with survival time of 13~19 hours.Histology of liver section revealed massive necrosis in nodules,with significant apoptosis of hepatocytes.Conclusion The experimental model of acute-on-chronic liver failure,induced by D-galactosamine/lipopolysaccharide in rats with immunological liver fibrosis,showed similar morphological changes as human beings,while D-galactosamine or lipopolysaccharide alone failed to sacrifice cirrhosis rats from liver massive necrosis.
A Sustainable Framework for the Optimization of Retrofit Strategies of Existing Buildings

The construction industry is one of the major causes of both the consumption of natural resources and environmental pollution. Buildings have a significant environmental impact during their lifecycle, consuming huge amounts of energy and natural assets and affecting the air and water quality in our cities. The life-cycle of a building consists of two phases: design and facility management (FM). Raw materials such as steel, concrete, iron, wood and brick are used in the first stage, while natural resources like water, natural gas and energy are utilized throughout the entire lifecycle. In addition, environmental effects include an increase in greenhouse gas emissions, global warming and the depletion of the ozone layer. Several negative effects on the environment are also the consequence of deconstruction activities due to the intensive use of natural assets and the generation of solid and liquid waste. As a consequence, all the stakeholders involved in the Architecture Engineering Construction (AEC) sector, such as architects, engineers, energy consultants, project managers, building users and local administrators, are working together to develop appropriate technologies. Indeed, the rising cost of energy, the overconsumption of natural resources, and all the environmental issues mentioned above have led to an increased demand for sustainable building structures with a low environmental impact, following ecofriendly principles. This means that the construction sector is in a period where there is a need for two important elements. The first is a boost in terms of eco-efficiency, which is considered to be an integration of several environmental and economic aspects aimed at reducing waste and the
Relationship between rennin and angiotensinogen gene polymorphisms and cerebral infarction

Objective To study the relationship between the renin (REN) gene G10631A, angio-tensinogen (AGT) gene T704C, C521T mononucleotide polymorphisms and cerebral infarction. Methods One hundred eighty patients with cerebral infarction and 130 healthy controls were recruited. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique was used to detect the REN G10631 site, AGT T704 and C521 site genotype and allele.The differences of the genotype and allele frequencies in both groups were compared.Logistic regression was used to analyze the risk factors for cerebral infarction.The haplotype structure of the population was analyzed in order to find cerebral infarction related polymorphism combination in this population.Results ①The REN 10631 AA genotype frequency (31.7%) and the A allele frequency (49.4%) in the cerebral infarction group were higher than 10.0% and 30.3% in the healthy control group (P 0.05). ②The AGT 704 CC genotype frequency (63.3%) and C allele frequency (79.7%) in the cerebral infarction group were higher than 34.6% and 61.2% in the healthy control group (P 0.05). ③The AGT 521IT genotype frequency (21.7%) and T allele frequency (27.8%) in the cerebral infarction group were higher than 6.9% and 11.9% in the healthy control group (P 0.05). ④Multivariate Lo gistic regression analysis showed that REN 10631AA genetype, AGT 704CC gene- type, and AGT521TT genetype could increase the probability of cerebral infarction.The relative risk (OR) of the onset was 2.617 , 2.699 , and 3.362, respectively (P 0.05) ; ⑤The distribution frequency of the haplotype 521T-10631A-704C in the cerebral infarction group was higher than that in the healthy control group (P=0.000). Conclusion REN gene 10631AA genetype and A allele, AGT 704CC genetype and C allele, and AGT 521TT genetype and T allele may be the susceptible factors of cerebral infarction.Haplotype 521 T-10631A-704C may be the genetic risk factors for the onset of cerebral infarction.
EXPERIMENTAL PROGRAMMES WITH RETOUCHERS: WHERE DO WE STAND AND WHERE DO WE GO NOW?

This paper presents a critical review of the experimental works with bone retouchers that have been published since the beginning of research about this type of tool. The aim of this review is not the recollection of references per se, but a critical evaluation of different studies. This critical synthesis will show where we are today from a theoretical and methodological point of view. A number of ideas on how to improve and expand the scientifi c research about retouchers will be proposed together with a range of open archaeological and experimental issues, which can be addressed by the research community in the years ahead.
A cross-sectional survey and influencing factors analysis of core competency of Critical Care Nurses in Changsha tertiary-A general hospitals

Objective: To investigate the level and influencing factors of core competency of Critical Care Nurses in Changsha tertiary-A general hospitals, and to provide an evidence for clinical intervention and administration. Methods: Stratified random cluster sampling method was adopted to investigate 600 critical care nurses in 5 tertiary-A general hospitals in Changsha with Comprehensive Inventory of Core Competency for Critical Care Nurses. Results: The average score of the scale was 355.73±41.41 and the score of 6 dimensions ranked the last three were professional knowledge and skills(71.85±14.39), individual and professional development competence(62.39±17.93) and academic competence(47.36±18.63). Multiple linear regression analysis showed that department, working years and title were the main factors, which explains 31.5% variances. Conclusion: The level of core competency for critical care nurses in Changsha tertiary-A general hospitals is above medium, and the level of individual and professional development competence and academic competence is poor. Nursing administrators should take effective measures according to the influencing factors of core competency of Critical Care Nurses.
Zero-Level Packaged RF-MEMS Switched Capacitors on Glass Substrates

This article presents the design, realization and measurement of thin-film packaged RF-MEMS switched capacitors for millimeter-wave applications. Packaging is included in the MEMS fabrication process, with silicon nitride thin film shell above MEMS structure. Thin-film packaging is done using a combination of electron beam evaporated metal and silicon nitride PECVD deposition. The package hermeticity has been evaluated after the first metal sealing layer deposition, indicating that the protective nitride shells are hermetic enough before the final PECVD passivation. The devices have been fabricated on glass substrates, allowing for further combination with low loss, millimeter-wave passive circuits. The MEMS capacitors are actuated by deflecting thin gold metal membrane towards the package dielectric layer, increasing the capacitance by a factor 3, from 25 fF to 75 fF. The device size, including its hermetic packaging, is $70\times 50\,\,\mu \text{m}^{\mathbf {2}}$ . Reliability has been evaluated, through 12-hour hold-down test measurements. [2019-0060]
The Strategic Logic of Environmental Terrorism: Linking Terrorist Ideology to Credit Claiming Behavior

Abstract Terrorist groups’ ideological types are a significant predictor of credit claiming for attacks. Environmental terrorist groups are more likely to claim credit because the attacks serve strategic purposes of intra-group communication, setting group agenda, and garnering public support, but also because environmental groups commit low-casualty attacks against noncivilian targets. We find when the classification of ideology is expanded to seven group types, environmental terrorist groups are most likely to credit claim and religious groups are less likely to credit claim. Our findings contrast existing work which has found the relationship between religious terrorism and credit claiming to be insignificant.
Effect of transcutaneous acupoint electrical stimulation on embryo quality and pregnancy outcome in low ovarian reaction patients

Objectives: To evaluate the effect of transcutaneous acupoint electrical stimulation(TEAS) on pregnancy outcome and embryo quality in low ovarian reaction patients treated with in-vitro-fertilization(IVF)/intracytoplasmic sperm injection(ICSI). Methods: A total of 92 patients with low ovarian reaction were randomly allocated to two groups,the control group(n=45) and the treatment group(n=47). They were all given short-term protocol to induce ovulation.The control group received no treatment while the treatment group received two months' treatment with transcutaneous acupoint electrical stimulation(TEAS) before controlled ovulation hyper-stimulation(COH). Basic endocrine index were compared before and after the treatment.The number of retrieval oocytes,fertilization rate,reproductive outcome were compared between the two groups.Results: 1.The number of retrieval oocytes in the treatment group was significantly higher than that in the control group(P0.05). 2.The endometrial thickness in the treatment group was significantly higher than that in the control group on the day of HCG(P0.05). 3.The good quality embryos rate in treatment group was significantly higher than that in control group(P0.05). 4.The clinical pregnancy rate in the treatment group was significantly higher than that in the control group(P0.05),and the abortion rate in treatment group was lower than that in the control group according to the follow ups after pregnancy(P0.05). 5.There was significant difference between the two groups in E2 level(P0.05). Conclusions: It is necessary for patients with low ovarian reaction to undergo in-vitro-fertilization(IVF)/intracytoplasmic sperm injection(ICSI) to receive TEAS therapy.It can improve clinical pregnant rate by improving ovarian local microenvironment and endocrine function.
The Spiritual Powers of Ephesians 6:10–18 in the Light of African Pentecostal Spirituality

Ephesians 6:10–18 remains one of the most important passages in the Pauline corpus that deals with the issue of spiritual warfare. Yet the referents of the spiritual powers remain somewhat unclear due to the differences in the continental world views of various interpreters. This article, in addition to reviewing some current hermeneutical approaches, suggests there is a shared understanding of the African Pentecostal world view of spirits with that of Eph 6:10–18. It cautions against an uncritical application of Paul’s teaching.
Microsurgical anatomy of dorsal root entry zone of brachial plexus

Objective: To study microsurgical anatomy of dorsal root entry zone of brachial plexus and provide references for treating root pain of brachial plexus avulsion by dorsal root entry zone lesion method. Methods: Twenty cervicothoracic spine specimens were used to explore the extension of laminectomy from C5 to T1 spine segments and the corresponding dorsal root entry zone. The number of rootlets, the angle from the downmost rootlet to spine and the distance from posterior median sulcus to posterolateral sulcus were measured. On transverse plane, the length and width of posterior horn and the angel of posterior horn to sagittal plane of spine were measured too. Results: After resecting the spinous process and lamina, the posterior root and rootlets of C5～T1 spine segments can be exposed. The average number of roolets of C5～T1 spine segments was about 7.76, C6 is the most. From up to down, the angle from the downmost rootlet to spine of C5～T1 spine segments diminished gradually. The average distance from posterior median sulcus to posterolateral sulcus was 2.95 mm. The average length, width and angle of posterior horn were 3.47 mm, 1.346 mm and 35.9 degree respectively. Conclusions: The spinous process and lamina of the C4 to C7 vertebrae should be excised when dorsal root entry zone lesions are employed to treat pain after brachial plexus avulsion. The lesion-making apparatus should be inserted at an angle of 30°～40°, the width of lesion should be less than 1.2 mm and the lesion depth less than 3.1 mm.
The Characteristics of Eosinophilia in a Series of Intravenous Methylphenidate Abusers

Seven cases of intravenous methylphenidate abuse are reviewed. A dramatic increase in absolute eosinophil count is noted, which decreases after discontinuation of the drug. Frequent associated complaints are pulmonary symptoms and fevers. The etiology of the eosinophilia is unknown. Mechanisms may include a hypersensitivity reaction to methylphenidate or an allergic reaction to the tablet fillers or diluents. The eosinophilia appears to resolve without complications.
Pedagogical link-making with digital technology in science classrooms

Digital technologies, particularly networked technologies, are changing the way we communicate with others and interact with information. Dialogic Theory helps us to understand the new ways in which students and teachers are making meaning with networked technologies, for instance by drawing our attention to the concept of 'dialogic space'. This chapter explores how discursive practices in classrooms are shaped by teachers and students within this dialogic space, by looking at the ways in which networked technologies impact on pedagogical link making in science lessons. We redefine and challenge existing theoretical ideas to construct an interpretative framework that helps us to understand how networked technologies reshape classroom discourse and the teaching learning process. Examples are taken from several research projects over a number of years in two different countries (UK and Catalonia), supporting the feasibility of using our framework in different contexts. Our results show that networked technologies empower students’ voices in the educational dialogic space, blur the space and time limits of school and out of school learning, and move the focus of teaching practices towards a competence-based approach, to enable students to establish meaningful knowledge-building links in a wide, digital, dialogic network.
Comparative study of advanced heat pumps

A numerical simulation study is reported on the thermodynamic performance of several non-CFC refrigeration devices. The study includes complex compound absoiption, Brayton, Stirling, and thermoelectric devices. Comparisons are made to the more commonly applied vapor compression systems, including those using R-134a. The study examines the effect of thermal resistances between the device and the heat rejection or heat absorption space. A cool side temperature difference between 0 and 20° C is investigated, and this temperature difference accounts for both thermal resistance and cooling load. An outside temperature ranging between 35° C and 46° C is considered in the calculations, with a cooled space temperature of 22° C assumed throughout. Evaluations of the coefficients of performance for each of the units show the vapor compression machines demonstrate superior performance over the complete range of operating conditions examined. However, additional requirements, such as maintenance and environmental factors, indicate other desirable options.
Forecasting the Price Distribution of Continuous Intraday Electricity Trading

The forecasting literature on intraday electricity markets is scarce and restricted to the analysis of volume-weighted average prices. These only admit a highly aggregated representation of the market. Instead, we propose to forecast the entire volume-weighted price distribution. We approximate this distribution in a non-parametric way using a dense grid of quantiles. We conduct a forecasting study on data from the German intraday market and aim to forecast the quantiles for the last three hours before delivery. We compare the performance of several linear regression models and an ensemble of neural networks to several well designed naive benchmarks. The forecasts only improve marginally over the naive benchmarks for the central quantiles of the distribution which is in line with the latest empirical results in the literature. However, we are able to significantly outperform all benchmarks for the tails of the price distribution.
Mathematics, Matter, And Method

Introduction 1. Truth and necessity in mathematics 2. The thesis that mathematics is logic 3. Mathematics without foundations 4. What is mathematical truth? 5. Philosophy of physics 6. An examination of Grunbaum's philosophy of geometry 7. A philosopher looks at quantum mechanics 8. Discussion: comments on comments on comments: a reply to Margenau and Wigner 9. Three-valued logic 10. The logic of quantum mechanics 11. Time and physical geometry 12. Memo on 'conventionalism' 13. What theories are not 14. Craig's theorem 15. It ain't necessarily so 16. The 'corroboration' of theories 17. 'Degree of confirmation' and inductive logic 18. Probability and confirmation 19. On properties 20. Philosophy of logic Bibliography Index.
Microencapsulación de Antocianinas de Berenjena (Solanum melongena L.) mediante Secado por Aspersión y Evaluación de la Estabilidad de su Color y Capacidad Antioxidante

Se extrajo antocianinas de la cascara de berenjena (Solanum melongena L.), con diferentes concentraciones de etanol acidificado al 1%. Los extractos de antocianinas se microencapsularon evaluando la influencia de las condiciones de secado por aspersion en las propiedades fisicoquimicas de los polvos. Las variables fueron temperatura del aire de entrada (170 y 180 °C) y la concentracion de maltodextrina (15, 20 y 30 %). Se realizaron analisis de contenido de antocianinas, parametros de color, capacidad antioxidante, humedad, actividad de agua, higroscopicidad, solubilidad, densidad, y espectrofotometria electronica de barrido. La mas alta concentracion de antocianinas a partir de cascara de berenjena (115 mg /100 g) se obtuvo con 53 % etanol, por 3h y a 29°C de temperatura. Durante la microencapsulacion por secado por aspersion se observo una influencia estadisticamente significativa de la temperatura y el porcentaje de maltodextrina empleado en la microencapsulacion (p<0.05) sobre la mayoria de las propiedades fisicoquimicas de los extractos.