Miracle-dz/UniFAR-FTUs huggingface dataset:
Evaluation of Corrosion Resistance of Alloy 625 Obtained by Laser Powder Bed Fusion

The aim of this work is to compare the corrosion resistance of nickel-base Alloy 625 (UNS N06625) produced by laser powder bed fusion with that obtained via conventional casting and hot working. Cyclic potentiodynamic polarization and potentiostatic tests were performed in order to evaluate the corrosion resistance of the differently manufactured alloys according to ASTM G5, and in NaCl 0.6 M solution at pH 7 and pH 3, at 40°C. The electrochemical characterization was carried out on the as-produced alloy and after annealing at 980°C for 32 minutes (according to ASTM B446). This heat treatment was also performed on the commercial hot worked alloy. Two surface conditions, namely as-built and polished surfaces, were investigated on the additive manufactured specimens. The alloy produced by laser powder bed fusion was not susceptible to pitting in the considered environments and had a good localized corrosion resistance, slightly higher than that of traditional wrought material. However, as predicted, the corrosion resistance of the as-built surfaces increased after mechanical polishing. The correlation between the corrosion performance and microstructure is also discussed.
Dengue Underestimation in Guangzhou, China: Evidence of Seroprevalence in Communities With No Reported Cases Before a Large Outbreak in 2014

Abstract Objective Dengue has become a serious public health problem in southern China particularly with a record-breaking outbreak in 2014. Serological evidence from areas with no known dengue cases reported prior to 2014 could provide information on possible unrecognized circulation of dengue virus (DENV) before this outbreak. Method Between March and May 2015, we performed a cross-sectional serosurvey using a stratified random sampling method among individuals aged 1–84 years-old in 7 communities in Guangzhou with no reported dengue cases before 2014. Sera of subjects were initially screened with the indirect DENV IgG enzyme-linked immunosorbent assay, and positive samples were further tested by the indirect immunofluorescence assay to identify specific serotypes. Results A total of 850 subjects had complete information available. The overall seroprevalence against DENV was 6.59% (56 of 850; 95% CI, 4.92%–8.26%). The seroprevalence increased with age in general (3.86%, 4.58%, 8.72%, 7.22%, and 10.69% among participants in ≤14, 15–29, 30–44, 45–59 and ≥60 years age group, respectively). Living in rural or peri-urban communities and longer years of residence therein were risk factors for higher seroprevalence, whereas wearing long sleeves and pants when outdoors was associated with lower seroprevalence. Of the total subjects, 55.36% (31 of 56) sera were successfully identified with specific serotypes, with 12.90% (4 of 31) being coinfected with 2 serotypes. Conclusions Dengue transmission in the study communities had occurred prior to the 2014 massive outbreak, possibly for many years, but went undiagnosed and unreported. A proportion of the study population experienced secondary infection as different serotypes of DENV increased the risk for severe diseases. Active surveillance and education of both healthcare providers and the general population should be conducted in areas at risk for dengue emergence in order to better reduce disease burden.
An Ambient RF Energy Harvesting System Where the Number of Antenna Ports is Dependent on Frequency

We describe the design of a multiport rectenna system for ambient radio frequency (RF) energy harvesting where the number of ports utilized is dependent on frequency. A unique aspect of the design is the use of different numbers of antenna ports for harvesting RF energy at different frequencies. This allows the available area for the rectenna to be fully utilized at all frequencies. In particular, the proposed antenna is designed to have four ports for harvesting energy from the GSM-900 frequency band and 12 ports for the GSM-1800 frequency band in the same area. The design for the rectifiers for the GSM-900 and GSM-1800 frequency bands with direct current (dc) combining is provided and prototypes are demonstrated. Field-test measurements show that the proposed rectenna can provide an output dc voltage of more than 3.2 V, an output dc power of more than −10 dBm, and an RF-to-dc efficiency of greater than 42% when the power density is greater than $1400~\mu \mathrm {W/m^{2}}$ . Measurements in an ambient RF environment at a university campus with commercial GSM-900 and GSM-1800 systems in operation show that the proposed rectenna can achieve output dc voltages of up to 2.2 V and dc power up to −13.6 dBm.
A methodology for multilevel analysis of scientific collaboration networks : mapping current computer science research in New Zealand

This research scientifically analysed the evolving Complex Network structures of the New Zealand Computer Science research community upon multiple levels (Macro, Meso, Micro, Topics). Methodological approaches utilised interdisciplinary techniques comprised of data mining, social network analyses, scientometrics and data visualisation. The research sought to identify communities, highly influential nodes, research institutions, and their collaborative patterns over the last 5 years. Network metrics revealed insights into the structure of the networks. Collaboration networks were generated using a variety of layout algorithms then visually presented in the form of knowledge maps. Furthermore, Word Co-occurrence networks of terms from both the Titles field and
An Optimal Text Recognition and Translation System for Smart phones Using Genetic Programming and Cloud

An Optimal Text Recognition and Translation System for Smart phones using Genetic Programming and cloud processes image with genetic algorithms is a live video translator which translates spontaneously. It uses optical character recognition (OCR) to recognize the characters and can be really useful when you have got a paper document you want in digital, editable form. You need a scanner which can be your mobile phone to create an image of the document first, but then once you have that image you can run it through this application that will read each character and attempt to recreate the original document as text. The image, even a road sign, is first preprocessed by using image acquisition process. Then the image segmentation is performed. The image is then processed with genetic algorithms, which is used to process the image to maximize the quality for text conversion from image. Preprocessed image is asynchronously transferred to character identification web services and obtained as actual text. Once the data is processed, it is displayed to the user. This system can translate any text written in English to Tamil also through translating web services. This system uses the Genetic algorithm which is used to process the image and produce maximum image quality by removing the noise and separate text from its background. The image segmentation is also performed and the color text is converted into grayscale and then the resultant image is translated by obtaining data from translation services. Then any massive changes in the text are noticed and if there are any changes present, the text is again sent to translation services and the obtained text is displayed as output. Though multiple attempts encounter traffic, it doesn't exceed the limit as in the previous system since the image is preprocessed to reduce its size and produce better and accurate results. Translated can be done easily by looking at the street sign using our smart phone's camera. It auto-focuses your camera as you point (if auto-focus is supported by your phone). While taking images, you can either snap a full image or highlight the area you want to translate with a rectangular box. Phone's flash can also turn on automatically based on lighting conditions. This also can save the text in the phone's clipboard to send as text message, mail, use in any app or to search in the web. This system can translate any text written in English to Tamil also through translating web services.
Another Travesty of Representation: Phonological Representation and Phonetic Interpretation of ATR Harmony in Kalenjin.

The Kalenjin group of languages, spoken mainly in western Kenya, displays a harmony system involving the phonological feature Advanced Tongue Root ([ATR]). The study reported here addresses issues of the phonological representation of the [ATR] in Kalenjin and its phonetic interpretation. Specifically, it is shown that (1) the harmony system encompasses the consonant system as well as the vowel system; (2) [AIR] is best characterized as a phonological unit that has a syllabic domain; (3) there are harmony constraints on the constituents of monomorphemic polysyllables; and (4) the phonetic exponents of [ATR] harmony provide evidence for the need to maintain a strict demarcation between an abstract, relational phonology and interpretive phonetic exponents. It is argued that a straightforward way of handling the [ATR] harmony system is in termsof underspecification, and it is proposed that a formal implementation of the analysis can be constructed in terms of constraints on structured hierarchies of features that permit partial specification and structure sharing, combined with a phonetic interpretation function. Contains 95 references. (MSE) ********;;A,. --**A;;AAAAAA**;;AkAA*A******I.AA************,',A******** Reproductions supplied by EDRS are the best that can be made from the original document. *********************************************************************** ANOTHER TRAVESTY OF REPRESENTATION: PHONOLOGICAL REPRESENTATION AND PHONETIC INTERPRETATION OF ATR HARMONY IN KALENJIN* John Local and Ken Lodge PERMISSION TO REPRODUCE AND DISSEMINATE THIS MATERIAL HAS BEEN GRANTED BY TO THE EDUCATIONAL RESOURCES INFORMATION CENTER (ERIC) U.S. DEPARTMENT OF EDUCATION I Office of Educational Research and Improvement EDUCATIONAL RESOURCES INFORMATION CENTER (ERIC) his document has been reproduced as received from the person or organization originating it. O Minor changes have been made to improve reproduction quality. Points of view or opinions stated in this document do not necessarily represent official OERI position or policy.
Genotype and dose-frequency may critically determine the therapeutic efficacy of chronic oxytocin treatment in humans

Chronic intranasal oxytocin administration daily is increasingly proposed as a therapy for social dysfunction but some clinical trials have reported small or no beneficial outcomes. No empirical evidence proves that this is optimal therapeutically or whether oxytocin receptor genotype influences treatment sensitivity. In a randomized, placebo-controlled pre-registered trial on 138 adult male subjects we investigated effects of single and repeated oxytocin treatment (24IU daily or alternatively days for 5 days). Primary neural outcomes assessed core therapeutic mechanisms of action, i.e. amygdala fear reactivity and amygdala-prefrontal intrinsic functional connectivity and modulation by oxytocin receptor polymorphisms (rs53576, rs2254298). The expected oxytocin-induced reduction in amygdala fear reactivity and associated anxious-arousal following single-dose administration was abolished after daily treatment but maintained when administered every other day. Oxytocin selectively reduced amygdala and arousal fear reactivity in AA homozygotes of rs53576 and A+ carriers of rs2254298. By contrast, oxytocin-enhanced intrinsic amygdala-prefrontal coupling was maintained independent of dose frequency and genotype. Together the findings provide the first evidence that infrequent rather than daily oxytocin administration protocols may be therapeutically most efficient and that its neural and behavioral anxiolytic actions are highly genotype-dependent.
Hyper-IgE syndrome. A study involving 30 children from Makkah - Saudi Arabia.

The hyperimmunoglobulin E syndrome is a primary immunodeficiency state with elevated immunoglobulin E, eosinophilia, skin, skeletal and dental defects. The aim of this study was to determine the frequency of these abnormalities in children with Hyper IgE syndrome. This would enable in apprising clinicians of the importance of early recognition and management of this condition. This study was conducted at Alawi Tonsi Hospital, Makkah, Saudi-Arabia, from February 2001 to April 2004. We evaluated 30 human immunodeficiency virus-seronegative children from consanguineous -19- and non-consanguineous -11- families with hyperimmunoglobulin E syndrome. All the cases were new, aged 10 years or less and reported either directly to the dermatology outpatients or from other units of the same hospital. Their detailed histories were taken. Besides anthropometric measurements, physical and dental examinations were done and laboratory tests were performed. The classical findings of hyperimmunoglobulin E syndrome were put in evidence. 26 patients (86.66%) presented recurrent skin infections including bacterial, viral and fungal infections. 22 patients (73.33%) had respiratory tract infection with half of them suffering from bronchial asthma. 6 (20%) of the children had skeletal abnormalities such as scoliosis, repeated fractures and osteopenia. 16 (53.33%) children had dental abnormalities, while only 5 (16.66%) children had eye and 4 (13.33%) ear infections. Elevated serum immunoglobulin E levels were observed in 28 cases (93.33%), while hypereosinophilia was seen in 29 (96.66%) children. In conclusion, the hyperimmunoglobulin E syndrome is a multi-system immunodeficiency disorder involving cutaneous, skeletal, connective tissue, and dental abnormalities. This condition must be borne in mind when children with repeated skin and chest infections are encountered.
Impact de l'insuffisance rénale aiguë au stade précoce de l'allogreffe de cellules souches hématopoïétiques sur la reconstruction immunitaire : étude monocentrique rétrospective

L'insuffisance renale aigue (IRA) est une complication frequente au cours de l'allogreffe de cellules souches hematopoietiques (CSH). Nous souhaitons evaluer l'impact de la survenue d'une IRA sur la reconstitution immunitaire post-allogreffe. Nous avons realise une etude retrospective monocentrique incluant tous les patients adultes ayant beneficie d'une allogreffe de CSH entre juillet 2012 et avril 2018 dans le service d'hematologie du CHU Amiens-Picardie. Les patients presentant une IRA, definie selon la classification RIFLE, dans les 30 jours suivant l'allogreffe etaient compares aux patients sans IRA. Nous avons inclus 202 patients dont 92 (45%) ont presente une IRA post-allogreffe. La survenue d'une IRA etait associee a l'existence d'une infection precoce (OR = 1,94; IC 95% : 1,01 -3,73) et d'un syndrome d'obstruction sinusoidale (OR = 5,96; IC 95% : 1,26-28,11). Les consequences de l'IRA sur la reconstitution immunitaire etaient une augmentation significative de la duree d'aplasie et de la survenue d'infection tardive. De meme, il existait une alteration du DFG de fin de suivi et la survie globale a 2 ans etait reduite dans ce groupe. Ameliorer le diagnostic et la prise en charge de l'IRA post-allogreffe de CSH pourrait limiter la survenue de complications a court et long terme et ainsi ameliorer la survie des patients.
fMRI artifacts reduction using Bayesian image processing

Functional MRI is known to be prone to artifacts caused by spatio-temporally varying structural noise components such as gross head motion, CSF pulsation, physiological fluctuation, and magnetic susceptibility changes. The presence of these artifacts can cause negative and positive false activation and obscure true activated pixels. Thus the reliability of the functional images can be diminished. The application of image registration or noise filtering can reduce artifacts related to motion and physiological pulsation, but cannot correct the locally differing spatial variations in T2* signal loss and the image distortions due to off-resonance effects. In our work, Bayesian image processing is applied to reduce noise and artifacts and to enhance true activity detection. The results indicate that Bayesian processing is effective in reducing fMRI noise and artifacts and in improving true activity detection by enhancing the connectivity of the activated pixels.
Alpha-1 Antitrypsin Attenuates Acute Lung Allograft Injury in a Rat Lung Transplant Model

Background. Ischemia-reperfusion injury (IRI) after lung transplantation triggers a cascade of inflammatory changes that can contribute to acute allograft injury. This influences both the short- and long-term survival of the lung allograft. Alpha-1 antitrypsin (AAT) is a protease inhibitor with known anti-inflammatory and immune-regulatory properties that mitigate tissue damage. This study explores the protective effects of AAT in the setting of IRI utilizing a rat lung transplant model. Methods. Orthotopic left single lung transplantation was performed from Lewis to Sprague-Dawley rats; recipients did not receive systemic immunosuppression. Before transplantation, the donor lungs were primed with either albumin (control) or AAT. Starting the day of transplantation, recipient rats also received either albumin (control) or AAT with subsequent doses administered over the next 7 days. On the eighth postoperative day, lung allografts were recovered and analyzed. Results. Degree of inflammatory infiltrate, as quantified by the allograft weight (g)/body weight (kg) ratio, was significantly reduced in the AAT-treated group compared with controls (3.5 vs 7.7, respectively, P < 0.05). Treatment with AAT also significantly decreased allograft necrosis in treated animals, as measured by a semiquantitative score that ranged from 0 to 4 (1.25 vs 4, P < 0.05). In addition, lymphocytes isolated from recipients treatment group showed significant proliferative inhibition via a mixed lymphocyte response assay in response to donor antigens. Conclusions. AAT attenuates acute allograft injury and necrosis in a rat model of lung transplantation, suggesting that AAT may play a role in reducing IRI-induced inflammation.
Wideband SIW-Based Low-Cost Multilayer Slot Antenna Array for $E$ -Band Applications

This paper proposes a substrate integrated waveguide (SIW) slot antenna array for the wideband gigabyte mobile radio application in the <inline-formula> <tex-math notation="LaTeX">$E$ </tex-math></inline-formula>-band. The wideband unit cell design is based on simultaneous feeding of four-element radiation slots with a higher order cavity mode directly excited by a simple slot aperture fed by a microstrip fork-like tuning stub. Employing the higher order mode along with the slot aperture facilitates low loss, simple feeding network, and lower sensitivity to fabrication errors. To cancel the beam tilt versus frequency, the higher-order-mode unit cell is used in a <inline-formula> <tex-math notation="LaTeX">$2 \times 2$ </tex-math></inline-formula> array along with a differential feeding structure. The array was designed and taped out using a new high-resolution multilayer printed circuit board (PCB) technology and characterized by using the constructed millimeter-wave (mm-wave) measurement setup at KU Leuven/imec. This technology provides the possibility to stack microvias in PCBs and reduces the fabrication cost compared to other multilayer technologies in mm-wave bands. The proposed array in <inline-formula> <tex-math notation="LaTeX">$2 \times 2$ </tex-math></inline-formula> array configuration has a measured bandwidth of 11.4 GHz (16%), a total efficiency of 69%, a realized gain of 12 dBi at 72 GHz, and a 3-dB gain bandwidth that covers the entire impedance bandwidth. In comparison with existing <inline-formula> <tex-math notation="LaTeX">$E$ </tex-math></inline-formula>-band SIW slot arrays (compensating for array sizes), the proposed design achieves similar or better performance in bandwidth but with lower cost, lower sensitivity to fabrication tolerances, and higher total efficiency.
Propositional logics for three

Semantics of propositional logic can be formulated in terms of 2-player games of perfect information. In the present paper the question is posed what would a generalization of propositional logic to a 3-player setting look like. Two formulations of such a '3-player propositional logic' are given, denoted PL(3)0 and PL(3). An overview of some metalogical properties of these logics is provided.
Clinical analysis on safety and efficacy of ICG real-time fluorescence imaging in laparoscopic hepatectomy of HCC at special location

Objective To analyze the safety and efficacy of indocyanine green (ICG) fluorescence real-time imaging technology and digital ultrasound guidance technology for laparoscopic liver resection (LLR) of HCC at special location. Methods Twenty-four patients with hepatocellular carcinoma at special location were enrolled and equally divided into two groups: ICG fluorescent group received intravenous indocyanine green injection 2-3 days before operation, and then did fluorescent laparoscopic liver resection, while the normal control group were given general laparoscopic liver resection; meanwhile, the intraoperative and postoperative indexes including operative time, intraoperative bleeding, complications and length of hospital stay were analyzed to judge the clinical feasibility. Results Except 1 case treated with laparoscopic radiofrequency ablation because of the old age and illness factors and 1 case for conversion to laparotomy, all the rest were treated by LLR with ICG real-time images combined guidance of ultrasound in ICG fluorescent group, and all the patients but one who underwent conversion to laparotomy received general laparoscopic resection in the normal control group. There was no statistical difference between the two groups in terms of operative time [(215.0±35.8)min vs. (208.0±18.6)min, P=0.554]. As compared with the normal control group, the intraoperative bleeding volume significantly reduced [(255.0±19.4)ml vs. (230.0±17.5)ml, P=0.0032], and the hospital stay significantly shortened [(8.9±1.2)d vs. (10.6±1.6)d, P=0.0076], but there was no statistical differences between the two groups in R0 cutting edge and complications (P=0.308; P=0.173). Conclusion Laparoscopic liver resection using ICG fluorescence real-time imaging combined the digital imaging technology under ultrasound guidance is a safe and effective treatment approach for HCC at the special position, being worthy of further promotion clinically. DOI: 10.11855/j.issn. 0577-7402.2019. 04.12
The Hypothetic Model of Integrated Production-Based Learning with the 21st Century Learning Skills in Mechanical Engineering

Vocational education building and development must consider the needs of the industry and the demands of 21st-century skills graduates. For these two requirements, it is necessary to innovate the learning model to improve the students’ learning experience and graduates’ performance. This study aims to develop a production-based learning model that is integrated with 21st-century learning skills to improve skills in mechanical engineering. The study employed focus group discussion and experts’ judgment. This study involved the mechanical engineering lecturers, the head of laboratory at the mechanical engineering department, the head of the department of mechanical engineering, the head of mechanical engineering vocational education, the head of the mechanical laboratory at the vocational schools, mechanical engineering teachers, vocational technology education experts, and curriculum specialists. The results show that the utility, feasibility, propriety, and accuracy of the production-based learning model integrated with 21st-century learning skills met the expected criteria and could be used to improve mechanical engineering skills.