Miracle-dz/UniFAR-FTUs huggingface dataset:
Mercury and selenium concentrations in the oysters Saccostrea palmula and Crassostrea corteziensis from four coastal lagoons of NW Mexico: health risk assessment

Mercury (Hg) and selenium (Se) concentrations in the soft tissue of the oysters Saccostrea palmula and Crassostrea corteziensis from four coastal lagoons (Altata, Macapule, Navachiste, El Colorado) of Northwest Mexico were determined. A total of 2520 specimens of S. palmula and 3780 of C. corteziensis (72.15 ± 4.95 and 73.57 ± 5.31 mm, respectively) were sampled seasonally from summer 2019 to spring 2020. The higher Hg concentration (wet weight) for S. palmula (0.13 ± 0.03–0.11 ± 0.02 µg g−1) and C. corteziensis (0.12 ± 0.02–0.11 ± 0.03 µg g−1) were obtained in summer−autumn 2019; Hg level was similar among the coastal lagoons and did not exceed the limit established by Mexican legislation and by the Food and Drug Agency. The higher Se concentration occurred in spring 2020 for both oyster species in El Colorado lagoon (4.55 ± 0.02 and 4.08 ± 0.05 µg g−1, respectively). The Se/Hg molar ratio of S. palmula and C. corteziensis ranged from 48.76–149.59 and 31.72–155.37, respectively; while the Se health benefit value was 19.23–42.28 and 17.82–35.30, respectively. The hazard quotient for Hg -estimated as methylmercury- and Se in both species of oyster was below 1. The high molar ratio obtained (Se/Hg > 1) indicates that the concentration of Se was sufficient to neutralize the possible toxicity of the Hg, therefore, the consumption of S. palmula and C. corteziensis from the four coastal lagoons studied does not represent a risk.
PCB-compatible optical interconnection using 45/spl deg/-ended connection rods and via-holed waveguides

In this paper, a new architecture for a chip-to-chip optical interconnection system is demonstrated that can be applied in a waveguide-embedded optical printed circuit board (PCB). The experiment used 45/spl deg/-ended optical connection rods as a medium to guide light paths perpendicularly between vertical-cavity surface-emitting lasers (VCSELs), or photodiodes (PDs) and a waveguide. A polymer film of multimode waveguides with cores of 100/spl times/65 /spl mu/m was sandwiched between conventional PCBs. Via holes were made with a diameter of about 140 /spl mu/m by CO/sub 2/-laser drilling through the PCB and the waveguide. Optical connection rods were made of a multimode silica fiber ribbon segment with a core diameter of 62.5 and 100 /spl mu/m. One end of the fiber segment was cut 45/spl deg/ and the other end 90/spl deg/ by a mechanical polishing method. These fiber rods were inserted into the via holes formed in the PCB, adjusting the insertion depth to locate the 45/spl deg/ end of rods near the waveguide cores. From this interconnection system, a total coupling efficiency of about -8 dB was achieved between VCSELs and PDs through connection rods and a 2.5 Gb/s /spl times/ 12-ch data link demonstrated through waveguides with a channel pitch of 250 /spl mu/m in the optical PCB.
The Effect of Internet Use on Improving Student Learning Outcomes

Students have difficulty in learning, so that it has an impact on low learning outcomes. The low student learning outcomes can be caused by the quality of learning, one of which is the lack of learning reference sources. The purpose of this study was analyze improvement of students' Biology learning outcomes before and after the application of internet use. This type of research is a quasi-experimental design through the Nonequivalent Control Group Design. The subjects in this study were students of class IX, which in this study used two classes, namely the control class and the experimental class. Learning in the control class is the usual lecture method, while in the experimental class it is done by applying the method of using the internet. The acquisition of learning outcomes data using the learning outcomes test (pretest-posttest). The hypothesis test using covariance analysis aims to determine whether there is an effect of the independent variable on the dependent variable. The results of the data obtained indicate that the effect of using the internet can improve student learning outcomes. The results of inferential statistical analysis obtained the value of Sig.count 0.000 with = 0.05. The results of the analysis indicate that the value of Sig.count is greater than (0.000 > 0.05) so Ho is rejected and H1 is accepted. So it can be concluded that in the learning process by utilizing the internet as a complement to conventional learning can improve student learning outcomes. Thus the internet as a learning resource can improve learning outcomes.
Treatment of Alzheimer’s disease by natural products

Alzheimer’s disease is a neurological disorder that progressively affects the brain cells. It is sometimes accompanied with dementia and commonly seen in elderly people. It ultimately leads to impaired cognitive functions and loss of memory. Widely used drugs such as donepezil and galantamine successfully abate mild to moderate symptoms of the disease though they have profound side effects. Natural products have been a source of medicine for over thousands of years. Plant secondary metabolites such as alkaloids, flavonoids, terpenoids, etc. are major sources of such medicines. In recent times, the use of natural products to treat various diseases has gained a lot of popularity. Extensive research is being undertaken to identify and isolate various natural products that can be used to not only reduce the disease symptoms but also as a permanent cure. The review article aims to summarize the effects of various natural products and their neuroprotective mechanisms that can be helpful to cure Alzheimer’s disease.
Effects of different dietary electrolyte balances on growth performance, carcass traits, blood parameters and immune responses of broilers

ABSTRACT The effects of different dietary electrolyte balances (DEB; 220, 230, 240, 250, 260, 270 and 280 mEq/kg of diet) were investigated on growth performance, carcass traits, blood serum parameters and immune responses of broilers under thermoneutral environment. Data were analysed in agreement to a completely randomized design. In the grower period (linear, P = .01) and throughout the study (linear, P < .01) feed, energy and protein intakes decreased by increasing the DEB level. In the starter period, ADG showed the lowest value at 250 DEB level (quadratic, P < .01), whereas in the grower period and throughout the study, ADG decreased (linear, P < .01) by increasing the DEB level. Serum uric acid showed the lowest concentration at 250 DEB level (quadratic, P = .02). The serum triglyceride concentration decreased (linear, P = .02) and concentration of high-density lipoproteins raised (linear, P < .01) by increasing DEB level. Immune response against Gumboro disease tended (P = .09) to raise (linear, P < .01) by increasing the DEB level. No considerable DEB effect was observed on carcass traits and relative organ weights. The DEB values ranging from 220 to 240 mEq/kg could be appropriate to promote broiler growth performance.
Novel permanent magnet linear generator topology for wave energy conversion

A novel topology for a permanent magnet linear generator for wave energy conversion is proposed. It aims to increase power density and to eliminate uneven air gap flux distribution caused by the longitudinal ends; this is done by eliminating stator and rotor yokes and by introducing a new flux path. Analytical and FEM studies are used to analyse the concept and to compare it to existing machines. Results and design challenges are discussed.
Effects of Paper Mulberry Silage on the Growth Performance, Rumen Microbiota and Muscle Fatty Acid Composition in Hu Lambs

Paper mulberry (Broussonetia papyrifera) is widely ensiled to feed sheep in southwestern China, as unconventional woody forage. Feeding lambs with paper mulberry silage (PMS) may improve certain feeding characteristics, thereby affecting the growth performance and meat quality. The aim of this study is to investigate the effects of four diets of PMS on growth performance, rumen microbial composition, and muscle fatty acids profile in Hu lambs. The results showed that 30% and 40% PMS increased the dry matter intake and average daily gain of Hu lambs compared to the control group. PMS30 and PMS40 increased the content of C24:1, and PMS40 increased the content of C20:5n-3. The content of microbial protein (MCP) was higher in PMS40 than in others, but PMS30 and PMS40 reduced the total volatile fatty acid in rumen. PMS30 significantly increased the ratio of acetic acid to propionic acid. The abundance of ruminal Christensenellaceae_R-7_group and norank_f_Eubacterium_coprostanoligenes_group was significantly higher in PMS30 and PMS40 groups. Moreover, Christensenellaceae_R-7_group had a significant positive correlation with n3-polyunsaturated fatty acid. PMS40 might lead to a relatively high content of unsaturated fatty acids in longissimus dorsi muscle by increasing the relative abundance of Christensenellaceae_R-7_group in rumen.
Dual-Band Antenna/AMC Combination for RFID

A novel antenna/Artificial Magnetic Conductor (AMC) combination usable in dual-band Radio Frequency Identification (RFID) tags over metallic objects is presented. A compact and low thickness prototype is manufactured and characterized in terms of return loss and radiation properties in an anechoic chamber both alone and on a metallic plate. The performance exhibited by the presented antenna/AMC prototype is proper for RFID tags on both metallic and nonmetallic objects.
Structural and (Pseudo-)Enzymatic Properties of Neuroglobin: Its Possible Role in Neuroprotection

Neuroglobin (Ngb), the third member of the globin family, was discovered in human and murine brains in 2000. This monomeric globin is structurally similar to myoglobin (Mb) and hemoglobin (Hb) α and β subunits, but it hosts a bis-histidyl six-coordinated heme-Fe atom. Therefore, the heme-based reactivity of Ngb is modulated by the dissociation of the distal HisE7-heme-Fe bond, which reflects in turn the redox state of the cell. The high Ngb levels (~100–200 μM) present in the retinal ganglion cell layer and in the optic nerve facilitate the O2 buffer and delivery. In contrast, the very low levels of Ngb (~1 μM) in most tissues and organs support (pseudo-)enzymatic properties including NO/O2 metabolism, peroxynitrite and free radical scavenging, nitrite, hydroxylamine, hydrogen sulfide reduction, and the nitration of aromatic compounds. Here, structural and (pseudo-)enzymatic properties of Ngb, which are at the root of tissue and organ protection, are reviewed, envisaging a possible role in the protection from neuronal degeneration of the retina and the optic nerve.
Development of an Integrated Approach to Virtual Mind-Mapping: Methodology and Applied Experiences to Enhance Qualitative Health Research

There is a growing need to better capture comprehensive, nuanced, and multi-faceted qualitative data while also better engaging with participants in data collection, especially in virtual environments. This study describes the development of a novel 3-step approach to virtual mind-mapping that involves (1) ranked free-listing, (2) respondent-driven mind-mapping, and (3) interviewing to enhance both data collection and analysis of complex health behaviors. The method was employed in 32 virtual interviews as part of a study on eating behaviors among second-generation South Asian Americans. Participants noted the mind-mapping experience to be (1) helpful for visual learners, (2) helpful in elucidating new ideas and to structure thoughts, as well as (3) novel and interesting. They also noted some suggestions that included improving interpretability of visual data and avoiding repetition of certain discussion points. Data collection revealed the adaptability of the method, and the power of mind-maps to guide targeted, comprehensive discussions with participants.
Manufacturing disruption costs due to quality loss

Purpose – Many authors have suggested that disruption and associated costs result from poor quality performance in manufacturing. The purpose of this paper is to define and quantify the disruption costs associated with a simple manufacturing scenario using a simulation approach.Design/methodology/approach – A manufacturing cell incorporating inspection and rework was simulated, and a validation exercise carried out. Using results from the simulation study, the authors then formulate the concept of a cost category for disruption cost, which is compatible with the traditional prevention‐appraisal‐failure (PAF) model for quality costs.Findings – Comparative graphs of disruption costs and PAF costs elements are presented. The simulated disruption cost is compared with these traditional costs categories, and found to represent a significant additional cost at higher levels of non‐conformance.Research limitations/implications – The results presented in this paper are derived from a discrete‐event simulation exe.
Information-seeking behaviours and uncertainty around accessing primary care in the changing landscape of the COVID-19 pandemic: a qualitative study

Background The COVID-19 pandemic has had and will continue to have a disproportionate effect on the most vulnerable. Public health messaging has been vital to mitigate the impact of the pandemic, but messages intended to slow the transmission of the virus may also cause harm. Understanding the areas where public health messaging could be improved may help reduce this harm. Aim To explore and understand health communication issues faced by those most likely to be impacted by the COVID-19 pandemic. Design & setting A qualitative study using online surveys. The area of focus was Fife, a local authority in Scotland, UK. Method Two consecutive surveys were conducted. Survey 1 explored the observations of support workers and Facebook group moderators, and focused on key issues faced by service users, as well as examples of good practice (n = 19). Survey 2 was aimed at community members, and focused on issues regarding access to and communication around access to primary care (n = 34). Results Survey 1 found broad issues around communication and access to primary care services. Survey 2 emphasised key issues in accessing primary care, including: (a) the lengthy process of making appointments; (b) feeling like a burden for wanting to be seen; (c) a lack of confidence in remote triaging and consultations; and (d) not knowing what to expect before getting an appointment. Conclusion Clear issues regarding access to primary care were identified. The new understanding of these issues will inform a co-creation process designed to develop clear, actionable, and effective public health messages centred on improving access to primary care.
Four-corner arthrodesis using the 4Fusion® quadripodal shape memory staple: a long-term review

We investigated the reliability of the 4Fusion® quadripodal memory staple in a consecutive series of 59 four-corner arthrodeses in a single centre. Forty-one patients (46 wrists) had a radiological and clinical assessment at a mean follow-up of 7.4 years. Thirteen patients (13 wrists) were lost to follow-up. Bone union was achieved in all but one patient. Seven patients were reoperated, six for device removal and one for nonunion. Most patients were satisfied, had a functional range of wrist mobility, good strength and were free of pain, comparable with the best previously reported series. Level of evidence: IV
An IGD+ Performance Indicator Based Particle Swarm Optimizer For Multi-objective Optimization

Particle swarm optimizer (PSO) is suitable for solving multi-objective optimization problems (MOPs). However, there are two main issues for any multi-objective particle swarm optimizers (MOPSOs). The first issue is how to balance the convergence and diversity. The second issue is how to enhance the exploitation and exploration during the evolutionary procedure. In order to address these issues, an modified inverted generational distance (IGD+) performance indicator based PSO (IGD+-MOPSO) is proposed. The external archive updating strategies based on the IGD+ indicator and the objective space decomposition method are proposed to select the evenly distributed non-dominated solutions. The leader updated strategy of each particle is based on the IGD+ indicator value which is associated to the corresponding reference vector. The genetic operator is embedded into the evolutionary procedure to reset the position in order to help the particle jump out of the local optimum. We have conducted the simulation on some related benchmark test instances. The experimental results have indicated that the proposed algorithm is competitive with some related algorithms.
Investigations on damping characteristics of a honge oil-based magnetorheological fluid damper

Magnetorheological (MR) fluid damper is a kind of intelligent control device that can be used to reduce response of a vibrating member instantaneously with very few moving parts, which is essential in most of the mechanical systems, but challenging. In the present work, a prototype of smart damper using MR fluid (MR damper) is designed based on Bingham plastic model and fabricated to conduct vibration related tests. A sudden damping is obtained as a result of quick change in viscosity and shear stress of the MR fluid in response to the change in magnetic field. Biodegradable oil namely honge oil is proposed as carrier liquid of the MR fluid. The relation between yield stress and magnetic field of the proposed honge oil-based MR fluid is used while designing the MR damper. Then an experimental setup is designed to investigate the damping and vibration control characteristics of the fluid. Damping force at various frequencies, amplitudes and currents are obtained and their inter-relations are studied. Furth.
An empirical study of on-line tax filing acceptance model: Integrating TAM and TPB

This study integrated theory of planning behavior (TPB) and technology acceptance model (TAM) to investigate the determinants affecting taxpayers’ on-line tax filing. According to the Global e-Government Study of Brown University in the United States, Taiwan‘s ranking was the world’s first in 2002. Hence, this study sampled 422 online taxpayers in Taiwan and questionnaire-based empirical study was used to collect data. The empirical results showed that: (1) Attitude was the primary factor affecting on-line tax filing, but “attitude” was also affected by “perceived usefulness”, “perceived ease of use”, “tax equity”, “social norm”, and “moral norm”; (2) Both TAM and TPB could be successfully integrated to explain online tax filing behaviors, and correlations were found between TAM factors and TPB factors; (3) Finally, we built a best-fitted model for on-line tax filing. This model would be the reference for establishing e-government. Key words: Theory of planning behavior (TPB), technology acceptance model (TAM), tax equity, social norms, moral norms.
Testing the stratigraphic consistency of Pleistocene microfossil bioevents identified on the Alpha and Lomonosov Ridges, Arctic Ocean

ABSTRACT Two different biostratigraphic approaches are used to identify Marine Isotope Stage 11 (MIS 11) in Arctic Ocean sediments. On the Lomonosov Ridge, globally calibrated nannofossil bioevents constrain the age of sediments back to MIS 13 (Core LOMROG12-3PC). In the Amerasian Basin the unique occurrence of the planktonic foraminifer Turborotalita egelida is increasingly used as a marker for MIS 11. However, the T. egelida horizon has only been dated using cyclostratigraphy. Here we bridge these approaches through investigation of a new core (AO16-8GC) from the Alpha Ridge, Amerasian Basin. AO16-8GC is easily correlated to LOMROG12-3PC and contains the T. egelida horizon, allowing the first comparison between the biostratigraphy of both regions. Based on the nannofossil biochronology of LOMROG12-3PC, the most convincing lithologic correlation between the Alpha and Lomonosov Ridge cores places the T. egelida horizon between MIS 15 and MIS 17. This potentially older age for the T. egelida biohorizon emphasizes the need for continued caution in interpreting paleoceanographic records predating MIS 6, until further work can reconcile the nanno- and microfossil biostratigraphies that are emerging for middle Pleistocene sediments of the central Arctic Ocean.
Using Sensorized Gloves and Dimensional Reduction for Hand Function Assessment of Patients with Osteoarthritis

Sensorized gloves allow the measurement of all hand kinematics that are essential for daily functionality. However, they are scarcely used by clinicians, mainly because of the difficulty of analyzing all joint angles simultaneously. This study aims to render this analysis easier in order to enable the applicability of the early detection of hand osteoarthritis (HOA) and the identification of indicators of dysfunction. Dimensional reduction was used to compare kinematics (16 angles) of HOA patients and healthy subjects while performing the tasks of the Sollerman hand function test (SHFT). Five synergies were identified by using principal component (PC) analyses, patients using less fingers arch, higher palm arching, and a more independent thumb abduction. The healthy PCs, explaining 70% of patients’ data variance, were used to transform the set of angles of both samples into five reduced variables (RVs): fingers arch, hand closure, thumb-index pinch, forced thumb opposition, and palmar arching. Significant differences between samples were identified in the ranges of movement of most of the RVs and in the median values of hand closure and thumb opposition. A discriminant function for the detection of HOA, based in RVs, is provided, with a success rate of detection higher than that of the SHFT. The temporal profiles of the RVs in two tasks were also compared, showing their potentiality as dysfunction indicators. Finally, reducing the number of sensors to only one sensor per synergy was explored through a linear regression, resulting in a mean error of 7.0°.
Optimal dispersion management for a wavelength division multiplexed optical soliton transmission system

Soliton's frequency shift arising from the pulse collision between wavelength division multiplexed (WDM) channels in an optical transmission line may be reduced by dispersion management technique. The reduction mechanism is due to a cancellation between the shifts in normal and anomalous dispersion fibers. With a proper management of the dispersion, the effect of lumped amplifiers on the frequency shift may also be canceled out. In this paper, we give a detailed analysis of the frequency shift in dispersion managed systems, and explain the reduction mechanism of the shift. We then propose optimal dispersion management schemes by means of minimizing the frequency shift. We also present a statistical analysis of the collision induced timing jitter for a two-channel WDM system.