Miracle-dz/UniFAR-FTUs huggingface dataset:
Pengaruh Kecepatan Putar Tool dan Sudut Shoulder Sambungan Friction Stir Spot Welding pada Bahan Polypropylene

Penyambungan bahan thermoplastic polypropilen dengan teknik Friction stir spot welding (FSSW) telah banyak dilakukan. Walaupun kekuatannya sudah mencukupi, masih dihasilkan keyhole dan bekas shoulder yang cukup besar karena penggunaan ukuran soulder dan pin besar. Penelitian ini menginvestigasi sambungan polypropilen dengan teknik FSSW menggunakan shoulder dan pin lebih kecil pada geometri shoulder yang berbeda. Penelitian di awali dengan pemotongan lembaran polypropylene dengan panjang 150mm, lebar 30mm dan tebal 5mm. Sambungan tumpang sesuai dengan standar EN 12814-2 digunakan dalam penyambungan ini. Proses penyambungan dilakukan pada kecepatan putar 985, 1660, 2350 rpm dengan dua jenis tool (shoulder angle 0o dan 5o). Sambungan diamati struktur makro, kekerasan dan kapastas beban tariknya. Hasil penelitian menunjukan bahwa semua sambungan memiliki kegagalan getas. Seiring bertambahnya sudut shoulder dan kecepatan putar tool, ukuran nugget dan welding zone meningkat, sehingga meningkatkan kapasitas beban tari mencapai 2116 N. Geometri tool 2 berpotensi untuk dapat diaplikasikan dalam sambungan FSSW. The joining of thermoplastic polypropylene material using the Friction stir spot welding (FSSW) technique has been developed. Although the strength is sufficient, it still produces a large keyhole and shoulder marks due to the use of a large shoulder and pin size. This research investigates polypropylene joint with the FSSW technique using smaller shoulders and pins on different shoulder geometries. The research began by cutting of polypropylene sheets into 150 mm long and 30 mm wide and 5 mm thick. Specimens according to EN 12814-2 were used in this welding joint. The welding process is carried out at rotational speeds of 985, 1660, 2350 rpm with two types of tools (shoulder angle of 0o and 5o). The welding joint was then observed for macrostructure, hardness, and tensile load-bearing capacity. The results showed that all welding joints had a brittle failure. The increasing of the shoulder angle and the rotational speed increase the nugget size and welding zone thickness resulting in a higher tensile load-bearing capacity which reaches up to 2116 N. The tool with the geometric being used has the potential to be applied in the FSSW joint.
The effect of voice and humour on users’ perceptions of personal intelligent agents

ABSTRACT Personal Intelligent Agents (PIAs) like Siri and Alexa are becoming more popular among users. In this paper, we investigate the effect of humour and voice of personal intelligent agents, their impact on users’ perceptions of intelligence and anthropomorphism, and the relationship of these perceptions with cognitive- and emotion-based trust. The results from an online experiment show that humour and voice significantly and positively influence users’ perceptions of anthropomorphism. These perceptions positively impact users’ emotion-based trust, which increases their intention to use the PIA. We also find that perceptions of intelligence shape users’ cognitive-based trust in the PIA. Our model is novel because it examines two key design characteristics of PIAs and articulates their effects on user perceptions. The effect of human-like characteristics, specifically humour and voice, on perceptions of intelligence and anthropomorphism and the potential impact on users’ cognitive- and emotion-based trust in PIAs have not been explored in an IS context.
Management of San Jose Scale on Apple with Soybean-oil Dormant Sprays

The objective of this study was to examine efficacy of soybean oil dormant sprays to manage San Jose scale (Quadraspidiotus perniciosus Comstock) on apple (Malus ×domestica Borkh.). On 14 Feb. 1994 and again on 20 Feb. 1995, 'Bounty' apple trees were: 1) left unsprayed (control) or sprayed to runoff with: 2) 3% (v/v) or 3) 6% degummed soybean oil with 0.6% (v/v) Latron B-1956 sticker spreader, or 4) 3% 6E Volck Supreme Spray petroleum oil. Crawler emergence occurred 17 May-28 June, 7 July-30 Aug., and 7 Sept. -24 Oct. 1994. First-generation crawler emergence had started by 8 May in 1995. Both 3% petroleum oil and 6% soybean oil sprays reduced the numbers of first- and second-generation crawlers by 93% in 1994 and first-generation crawlers by 98% in 1995. The 3% soybean oil treatment reduced first- and second-generation crawlers by 60% in 1994 and first-generation crawlers by 83% in 1995. In 1995, apple fruit infestations by first-generation scales on the 3% soybean-, 6% soybean-, and 3% petroleum oil-treated trees did not differ significantly, but all fruit were significantly less infested than the controls.
Isolation of Novel Bacteria Isolate from Soil for Production of Extra-Cellular Laccase Enzyme

This study reports the isolation of novel Bacterium from Soil for production of Extra-cellular Laccase Enzyme. Samples from garden, ant-induced and animal dung contaminated soil were collected in the Devi Ahilya University campus and around, Indore, Madhya Pradesh. Various methods including biochemical and morphological identification for high productivity of the enzyme were used. The media optimization was implemented taking various parameters like carbon source, nitrogen source, pH and temperature. From the study the bacteria isolate was found to be in Streptomycetes sp. Plates were incubated at 30◦C for 24-72 hours and 10 positive colonies were chosen and purified in stepwise techniques for their potential to produce laccase using 2, 20-azino-bis-(3-ethyl benzothiazoline-6-sulfonic acid) (ATBS) as a substrate. The ant induced soil was found to be the potential source for laccase producing bacteria. Maximum enzyme production was obtained in the presence of starch (0.563U/ml) and NaNO3 (0.84U/ml). The optimum pH and temperature for enzyme activity was found to be at pH 6(0.90U/ml) and temperature at35 oC (0.504U/ml). Soluble starch was used as the substrate for the amylase production. The protocol developed in our study for the isolation, characterization and media optimization for the production of laccase from the isolate is reproducible for further study and industrial applications.
Some attempts to detect genetic differences between populations of small balsam (Impatiens parviflora DC.)

Invasive plants populations often originate from a few individuals, thus they may show very low genetic variability. On the other hand, differences between local populations can result from a rapid evolutionary change, which may play impor- tant role in the invasion process. We attempt to detect genetic differences between two Polish populations of small balsam, an annual plant highly invasive in Europe. Studies are conducted in parallel at two levels: morphological (by common garden experiments) and molecular (using AFLP method). AFLP shows no differences between the two populations, but the results obtained for some morphological measurements suggest that slight genetic differences between the two populations exist. Possibly they are too small to be detected through AFLP technique. Some of them can result from maternal effects; this is to be checked in further research.
Holiday, Just One Day out of Life: Birth Timing and Postnatal Outcomes

Fewer births occur on major US holidays than would otherwise be expected. We use California data to study the nature and health implications of this birth date manipulation. We document 18% fewer births on the day of and just after a holiday. Cesarean sections account for roughly half of the decline. “Missing” holiday births are displaced to a window of time 11 days before the holiday through 16 days after the holiday. High-risk births are more likely to be rescheduled. Despite the change in timing, we find little evidence of any adverse health consequences for babies born around a holiday.
Perceived risk of the harmful use of alcohol among young adults in the context of HIV&AIDS in Kenya

ABSTRACT Background: This study examined factors associated with perceived risks for the harmful use of alcohol among young adults in the context of HIV and AIDS. This is the alcohol use that affects physical and mental health and has social consequences. Informed by the protection motivation theory and the social cognitive theory, the study focused on the motivational and cognitive factors that influence risk perception, which includes knowledge, self-efficacy, and outcome expectancies. Methods: Data were gathered through a self-administered survey among young adults (n = 402) who were recruited using the intercept method (Median = 22 years, Mean = 22.5 years). Results: Key findings show a low level of risk perception for the harmful use of alcohol and a high level of alcohol-related self-efficacy. Participants had moderately high knowledge about HIV and AIDS, low HIV-related risk perception but high HIV-related self-efficacy. There was a correlation between alcohol risk perception and perceived risk of HIV and AIDS. Significant determinants of alcohol risk perception included sex-related alcohol expectancies, HIV risk perception, and HIV self-efficacy. Sex-related alcohol expectancies were correlated with risk perception for HIV infection and the harmful use of alcohol. Conclusion: The study provides insights on factors that public health and communication specialists must consider when communicating about the harmful use of alcohol. Enhancing risk perception and self-efficacy for the harmful alcohol use and communicating in the context of HIV and AIDS in high-risk environments is crucial. Furthermore, addressing sex-related alcohol expectancies may lower the risk of HIV and other sexually transmitted infections among alcohol consumers.
Publishing and flourishing: writing for desire in higher education

ABSTRACT In the current performative climate of higher education, where academic outputs are highly valorised, professional academic writing has become ‘high stakes’ and is often framed as fraught with tension and anxiety. In this article, we contest the phrase ‘publish or perish’ and argue that is not necessarily helpful or, indeed, always true. Through interviews involving critical incidents with a team of academics, the authors found that tensions in experiences of scholarly writing do indeed exist. However, participants also reported on the affordances of the process of professional academic writing in terms of developing ideas, collaborations, and creating spaces for creativity and desire. We emphasise the juxtaposition of the value of creation with the value of the finished product and argue that writing for publication needs to be highlighted as a process permeated with learning opportunities for both early career researchers and more experienced academics.
Advanced heart failure with reduced ejection fraction

Abstract Patients suffering advanced heart failure with reduced ejection fraction (HFrEF) account for a large portion of patients admitted to hospitals worldwide. Mortality and 30-day readmission rates for HFrEF are now a focus of value-based payment models, making management of this disease a priority for hospitals, physicians, and payers alike. Angiotensin-converting enzyme inhibitors have been the cornerstone of therapy for decades. However, with treatment, the prognosis for patients with advanced HFrEF remains poor. Fortunately, advances in medical therapy and mechanical support offer some patients improvement in both survival and quality of life. We review advances in short- and long-term mechanical support and explore changes to organ allocation for cardiac transplantation. In addition, we provide a guide to facilitate appropriate referral to an advanced heart failure team.
Suppression of the Primary Antibody Plaque Response of Mice Following Infection with Friend Disease Virus.∗

Summary Infection of mice with Friend Disease Virus prior to or simultaneous with immunization with sheep red blood cells resulted in a marked suppression of appearance of antibody forming cells, as determined by a localized hemolytic plaque technique in agar gel. Infection with virus had a marked suppressive effect on the number of 19S hemolysin forming cells in mouse spleen tissue at the peak of the expected immune response and during a period of two weeks or longer thereafter. Appearance of low efficiency 7S hemolysin forming cells late in the immune response, following a single injection of sheep red cells. Was also depressed in infected mice. Animals infected 3 days to a week or longer prior to immunization had the lowest number of detectable 19S or 7S antibody-forming cells. The number of plaque forming cells per million leukocytes tested was most suppressed in those mice which had obvious splenomegaly due to virus infection.
On the self-regulating effect of grain size evolution in mantle convection models: application to thermochemical piles

Abstract. Seismic studies show two antipodal regions of lower shear velocity at the core–mantle boundary (CMB) called large low-shear-velocity provinces (LLSVPs). They are thought to be thermally and chemically distinct and therefore might have a different density and viscosity than the ambient mantle. Employing a composite rheology, using both diffusion and dislocation creep, we investigate the influence of grain size evolution on the dynamics of thermochemical piles in evolutionary geodynamic models. We consider a primordial layer and a time-dependent basalt production at the surface to dynamically form the present-day chemical heterogeneities, similar to earlier studies, e.g. by Nakagawa and Tackley (2014). Our results show that, relative to the ambient mantle, grain size is higher inside the piles, but, due to the high temperature at the CMB, the viscosity is not remarkably different from ambient mantle viscosity. We further find that although the average viscosity of the detected piles is buffered by both grain size and temperature, the viscosity is influenced predominantly by grain size. In the ambient mantle, however, depending on the convection regime, viscosity can also be predominantly controlled by temperature. All pile properties, except for temperature, show a self-regulating behaviour: although grain size and viscosity decrease when downwellings or overturns occur, these properties quickly recover and return to values prior to the downwelling. We compute the necessary recovery time and find that it takes approximately 400 Myr for the properties to recover after a resurfacing event. Extrapolating to Earth values, we estimate a much smaller recovery time. We observe that dynamic recrystallisation counteracts grain growth inside the piles when downwellings form. Venus-type resurfacing episodes reduce the grain size in piles and ambient mantle to a few millimetres. More continuous mobile-lid-type downwellings limit the grain size to a centimetre. Consequently, we find that grain-size-dependent viscosity does not increase the resistance of thermochemical piles to downgoing slabs. Mostly, piles deform in grain-size-sensitive diffusion creep, but they are not stiff enough to counteract the force of downwellings. Hence, we conclude that the location of subduction zones could be responsible for the location and stability of the thermochemical piles of the Earth because of dynamic recrystallisation.
Effect of Gradient Nanostructured Ti on Behaviours of MG63 Cells In Vitro

Titanium (Ti) is widely used in oral implants. However, there is still a challenge to promote the osseointegration of bone tissue on the surface of Ti. To solve this problem, we prepared novel gradient nanostructured (GNS) Ti and studied the effect of GNS on the adhesion, proliferation, and apoptosis of MG63 cells in vitro. The results demonstrated that the GNS Ti promoted the adhesion effect and proliferation of MG63 cells better than the annealed Ti, while the ability of GNS Ti to inhibit cell apoptosis was better than that of the annealed Ti, the preliminary mechanism of which indicated by this study might be the enhanced mineralization capacity, protein adsorption ability, and hydrophilicity of the GNS Ti due to its specific nanostructure which improved the cell behaviours. The results in this study provide the theoretical and experimental foundations for the applications of GNS Ti in dental implants and joint replacements.
Pain assessment in surgical patients in the South Bohemia region

Aim: The aim of the study was to describe the current state of pain assessment in surgical patients in the South Bohemia region. Design: A quantitative descriptive study. Methods: Two sets of questionnaires were used to determine the state of pain assessment. The sample included 253 nurses and 205 patients from the South Bohemia region. Results: Nurses use visual analog scales (129) and verbal pain assessment (89) to assess pain. A more precise verbal description of pain assessment would be appreciated by 44 of the respondents, and 42 would appreciate confirmation of assessments by doctors. According to nurses, the main pain manifestations in patients are: limited mobility (156), verbal expressions (134), lack of cooperation (129) and limited independence (128). Direct physical manifestations of pain mentioned by patients include: limited mobility (140), limited independence (97), and mimic manifestation (46). Patients would like pain assessments complemented by more accurate verbal assessments (84), use of pictures to illustrate pain (40), and increased frequency of assessment by doctors (29). Conclusion: The data obtained suggest some shortcomings in pain assessment, and indicate the spheres in which provision of care could be improved.
Development of a serological tool for koi herpesvirus surveillance

Koi herpesvirus (KHV) causes a severe disease and mass mortalities in populations of common carp (Cyprinus carpio carpio) and koi carp (Cyprinus carpio koi). The disease has spread rapidly around the world and devastating losses have occurred in intensive and extensive carp culture facilities in Europe, Asia and North America. The disease is now notifiable to the World Organisation for Animal Health (Office International des Epizooties, OIE).
EEG Self-Adjusting Data Analysis Based on Optimized Sampling for Robot Control

Research on electroencephalography (EEG) signals and their data analysis have drawn much attention in recent years. Data mining techniques have been extensively applied as efficient solutions for non-invasive brain–computer interface (BCI) research. Previous research has indicated that human brains produce recognizable EEG signals associated with specific activities. This paper proposes an optimized data sampling model to identify the status of the human brain and further discover brain activity patterns. The sampling methods used in the proposed model include the segmented EEG graph using piecewise linear approximation (SEGPA) method, which incorporates optimized data sampling methods; and the EEG-based weighted network for EEG data analysis, which can be used for machinery control. The data sampling and segmentation techniques combine normal distribution approximation (NDA), Poisson distribution approximation (PDA), and related sampling methods. This research also proposes an efficient method for recognizing human thinking and brain signals with entropy-based frequent patterns (FPs). The obtained recognition system provides a foundation that could to be useful in machinery or robot control. The experimental results indicate that the NDA–PDA segments with less than 10% of the original data size can achieve 98% accuracy, as compared with original data sets. The FP method identifies more than 12 common patterns for EEG data analysis based on the optimized sampling methods.
Motivational factors impacting rural community participation in community-based tourism enterprise in Lenggong Valley, Malaysia

ABSTRACT This study investigates factors motivating the participation of rural residents of Lenggong Valley, Malaysia, in community-based tourism enterprises (CBTEs). We used observation and focus group discussions to gain insights into the cognitive evaluation and social capital dimensions of local residents’ participation in CBTEs. Observations were made of 32 participants during their CBTE initiation, while 15 participants contributed to focus group discussions 12-months later. The findings suggest that self-determination and perceived competence were integral to residents’ continuous involvement and commitment in the CBTE project. We also found that strong social networks, trust in external groups, mutual cooperation, and shared goals were significant motivational factors for residents to participate in the project.
The influence of tillage system on diversities of soil weed seed bank

Field experiments with different soil tillage systems were conducted in 2003-2006 at the Lithuanian Institute of Agriculture. Investigations to evaluate effects of soil tillage regime on weed seed bank and distribution in the soil layers were made after four years of experimentation. A total of 17 weed species were found in the soil seed bank; 98 % - annual dicotyledonous. The most abundant weed species in the seed bank were Chenopodium album, Lamium purpureum and Stellaria media. The highest number of weed seed species was found in treatments with reduced and no-tillage treatments in a soil layer of 0-5cm. In deeper soil layers, 5-10, 10-20, no differences in species number of weed seeds were found.
Trophic Magnification of Legacy (PCB, DDT and Hg) and Emerging Pollutants (PFAS) in the Fish Community of a Small Protected Southern Alpine Lake (Lake Mergozzo, Northern Italy)

The biomagnification of mercury, polychlorobiphenyls (PCBs), dichlorodiphenyltrichloroethane and its metabolites (DDTs) and perfluoroalkyl acids substances (PFASs) was evaluated in the trophic web of Lake Mergozzo, a small and deep Italian subalpine lake, which has been chosen because it is a protected environment, and discharges into the lake are mostly avoided. Carbon source and relative trophic levels were calculated by using 13C and 15N stable isotopes, respectively, and trophic magnification factors (TMFs) were derived. Zooplankton and thirteen species of fish were collected and analyzed, and the results showed the elevated level of biota contamination from both legacy and emerging pollutants, even if direct discharges were avoided. Concentrations in biota, expressed as sums of compounds, ranged from 0.4 to 60 µg kg−1 wet weight (ww) for PFASs, from 16 to 1.3 104 µg kg−1 lipid content (lw) for DDTs, from 17 to 1.5 104 µg kg−1 lw for PCBs and from 20.0 to 501 µg kg−1 ww for mercury (Hg). TMFs of this deep, cold lake, with a prevalent pelagic trophic chain, were high and clearly indicated fish biomagnification, except for PFAS. The biomagnification capability of PFAS in a fish-only food web was discussed by using the biomagnification of Hg as a benchmark for assessing their bioaccumulation potential.
A new species of the Gondwanan centipede Anopsobius (Chilopoda: Lithobiomorpha) from New South Wales, Australia

Anopsobius wrighti n. sp. , from the New England and Washpool-Gibraltar Range regions of northern New South Wales, is the first Australian species of the Gondwanan genus Anopsobius Silvestri, 1899 (Henicopidae: Anopsobiinae). Anopsobius is also known from Chile, Argentina, the Falkland Islands, South Africa, New Zealand, and the Chatham and Auckland Islands. The new species is closely related to the New Zealand species A. neozelanicus Silvestri, 1909.