Miracle-dz/UniFAR-FTUs huggingface dataset:
Studies on the Reduction of [(C5Me5)2Mo2O5] in Methanol/Water/Acetate Solutions by On‐Line Electrochemical Flowcell and Electrospray Mass Spectrometry

The complex [Cp*2Mo2O5] (Cp* = η5-C5Me5) and its electrochemical reduction products in acetic acid/acetate-buffered (pH = 4.0) water/methanol solutions were investigated by combined electrochemical (EC) flowcell and on-line electrospray ionization mass spectrometry (ESI-MS). Mono-, di-, tri-, and tetranuclear organometallic molybdenum oxides were identified in the starting solution. The effect of the relevant ESI-MS parameters (ionic mode, heated capillary voltage, and heated capillary temperature) and of the concentration on the observed distribution of ions in the mass spectrometer was studied in order to minimize side reactions in the ESI chamber. It was verified that reduction in the ESI-MS is undetectable under open-circuit conditions. The on-line electrochemical study revealed the potential-dependent formation of previously unknown mono-, di-, tri-, and tetranuclear MoV, MoIV, and mixed-valence complexes. The compounds were identified by their characteristic isotope patterns and their ion trap MSn fragmentations. The observed formation potentials reflect the higher stability of the multinuclear species relative to the mononuclear ones with the same oxidation state. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
Aspek genetik dan manifestasi klinis varian young onset Parkinson disease

Etiologi penyakit Parkinson bersifat multifaktorial dan ditentukan oleh interaksi antara faktor gen dan lingkungan. Young onset parkinson disease (YOPD) terjadi pada kisaran usia yang lebih muda (21-40 tahun) dengan manifestasi klinis yang spesifik dan memiliki korelasi genetik yang kuat. Varian klinis YOPD beragam dan diakibatkan oleh lebih dari satu jenis mutasi genetik. Mutasi gen SNCA diwariskan secara autosomal dominan dan dapat memberikan gejala klinis YOPD yang tipikal maupun atipikal tergantung tipe mutasi genetik yang terjadi. Mutasi gen Parkin, PINK1, dan DJ-1 menyebabkan gejala klinis penyakit Parkinson yang tipikal dengan pola pewarisan autosomal resesif. Mutasi gen ATP13A2, PLA2G6, FBXO7 menyebabkan gejala klinis penyakit Parkinson yang atipikal dan diwariskan secara autosomal resesif. Artikel ini memberikan ringkasan pengetahuan tentang etiologi mutasi genetik beserta manifestasi klinis pada varian kasus YOPD. Klinisi dapat menggunakannya untuk penilaian klinis pasien dengan varian kasus YOPD guna proses manajemen medis selanjutnya.
Headmasters’ Safety Management and Performance in Two Malaysian National Primary Schools

A conducive environment to ensure safety among school students is crucial as most of the time they are at school and grow up in school settings. It is vital to understand that, this period is a critical development stage for students whereby their personality is developed holistically in a different environment from home. The failure of handling hazards effectively and neglecting attitude on reporting cases contributes to the rising number of accidents in schools. Thus, the study aims to explore headmasters’ strategies in safety management and how they strengthen teacher’s safety performances in schools. An explorative case study research design was adopted using purposive sampling. The data was collected through semi-structured interviews with two headmasters. The data analyses were performed by reviewing the informants’ transcripts, and the transcripts were coded through open, axial and selective coding. The findings of the study revealed seven strategies implemented by the headmaster's in managing school safety are: (a) Importance of Safety Management; (b) Acting as Role Model; (c) Communicates School Safety; (d) Safety Practices; (e) Training Teachers; (f) Budget Arrangements; and (g) Alliance with School Community. Findings also revealed headmaster’s strengthen teacher’s safety performances in schools in two ways: (a) Trust in Teachers; and (b) Teachers Execute Programmes. This study provides an insight into the headmaster's safety management and safety performance in two Malaysian primary schools. Besides, policymakers will benefit from the change that could be made on safety-related matters with the aim of reducing the number of accident and incident cases among school students.
A High Step-Down DC–DC Converter With Reduced Inductor Current Ripple and Low Voltage Stress

This article presents a buck converter with a large step-down voltage conversion ratio, reduced ripple in inductor current and low semiconductor voltage stress. The proposed converter produces a lower output voltage at a sufficiently higher duty ratio compared to the conventional buck converter. The step-down voltage conversion ratio is modified by a series-parallel transition of two identical capacitors of a switch-capacitor cell. Two parallelly placed switches and two cross-connected identical capacitors are utilized to design the cell. An extra inductor is placed at the input side to oppose the sudden change in input current due to the series-parallel transition of the two identical capacitors. Therefore, two inductors are required to design the converter. These two inductors are coupled directly. The modified voltage conversion ratio reduces the ripple in inductor currents and output voltage. Direct coupling between the two inductors helps to further reduce the ripple in inductor currents and output voltage. The operating principle, analysis of ripple in inductor currents, and ripple in output voltage are discussed. The analysis of small-signal modeling is carried out and a voltage mode PI-controller is designed to enable the closed-loop operation. Finally, the proposed converter is implemented in hardware and the performance of the proposed converter is verified experimentally.
High-Level Ab Initio Calculations of Dihydrogen-Bonded Complexes

High-level ab initio calculations have been performed on dihydrogen-bonded complexes with hydrogen fluoride (HF) as a proton-donating molecule and simple molecules as proton-acceptors (CH4, SiH4, BeH2, MgH2, LiH, and NaH). MP4(SDQ)/6-311++G** and QCISD(T)/6-311++G** results show that H-bond energies for such systems are significant. For example, the H-bond energy is −11.9 kcal/mol for the LiH···HF complex at the QCISD(T)/6-311++G** level of theory; the basis set superposition error (BSSE) was included, and the geometry of the complex was optimized at the QCISD/6-311++G** level. The relationships between the geometrical parameters of these complexes are in good agreement with those obtained from the bond valence model. The BSSE is taken into account in all levels of calculations. A comparison of the results of the calculations shows that the MP2/6-311++G** level of theory is sufficient for a description of dihydrogen-bonded complexes. Additionally, Bader's theory is included in the analysis of the investig.
Smooth surface glass etching by deep reactive ion etching with SF6 and Xe gases

This article reports on a smooth surface glass etching using deep reactive ion etching with a mixture of sulfur hexafluoride (SF6) and xenon (Xe) gases. A surface roughness of 23 A was achieved with SF6/Xe(=1/1) and 18 A with SF6/Ar(=1/4) under a condition of −390 V self-bias voltage and 0.2 Pa pressure. The surface roughness in the order of several angstroms (5.9 A) was obtained at a pressure of 0.1 Pa (SF6/Xe=1/1). The average surface roughness (Ra) after the etching by SF6/Xe gas was smaller than those after the etching with SF6 only or SF6/Ar at a same mole fraction of the inert gas to SF6+inert gas. Since heavy inert gas increases the physical sputtering effect, the addition of the heavy inert gas helps to remove contaminant residues remaining on the etched surface. The optimum condition of smooth glass etching with high etch selectivity (21) is a pressure of 0.2 Pa and a mole fraction of Xe to SF6 gas is 8 to 7. We also make an analysis of the relationship between the surface average roughness on the bottom and the etched depth. The average roughness of the etched surface was smooth not only for the bottom but also for the sidewalls. The average surface roughness of the sidewalls was about 16 nm for 50-μm-deep etching under the same optimum condition. This technology was applied to a deep etching of quartz crystal used for a mass sensor.This article reports on a smooth surface glass etching using deep reactive ion etching with a mixture of sulfur hexafluoride (SF6) and xenon (Xe) gases. A surface roughness of 23 A was achieved with SF6/Xe(=1/1) and 18 A with SF6/Ar(=1/4) under a condition of −390 V self-bias voltage and 0.2 Pa pressure. The surface roughness in the order of several angstroms (5.9 A) was obtained at a pressure of 0.1 Pa (SF6/Xe=1/1). The average surface roughness (Ra) after the etching by SF6/Xe gas was smaller than those after the etching with SF6 only or SF6/Ar at a same mole fraction of the inert gas to SF6+inert gas. Since heavy inert gas increases the physical sputtering effect, the addition of the heavy inert gas helps to remove contaminant residues remaining on the etched surface. The optimum condition of smooth glass etching with high etch selectivity (21) is a pressure of 0.2 Pa and a mole fraction of Xe to SF6 gas is 8 to 7. We also make an analysis of the relationship between the surface average roughness on th.
Strengthening Post-Operative Pain Assessment in Patients with Major Abdominal Surgery, University Teaching Hospitals, Zambia

Systematic, routine pain assessment using standardized clinical guidelines is the foundation of effective pain management for patients who are unable to self-report pain. In Zambia, there are no context appropriate standardised clinical guidelines for post-operative pain observations. This study sought to develop such a clinical guideline in form of an assessment tool. The study adopted an exploratory sequential mixed method through a three-phased approach and an adapted Clinical Decision Making Survey instrument was used. Snowball sampling was employed and in phases II and III, purposive sampling was used. The study was conducted at the University Teaching Hospitals where 120 participants were enrolled in the study. Phases II and III provided preliminary internal validation processes of the developed tool, where discussions, orientation and trial implementation of the tool were done. In phase II of the study, 47 participants comprising of nurses participated while in phase III, there were 11 nurses and 32 participants. The results yielded the first ever standardised post-operative pain assessment tool for patients with major abdominal surgery in Zambia. The tool is made up of six dimensions of the identified nonverbal indicators of post-operative pain in patients with major abdominal surgery namely: facial expressions, mobility, activity intolerance, behavioural disturbance, communication ability and vital signs. The present study showed that the developed post-operative pain assessment tool for Zambia is acceptable for use among patients who have had major abdominal surgery and can facilitate improved post-operative pain management for most patients.
Study on Physicochemical Properties and Application Prospect of Several Typical Bentonite

Four kinds of bentonite samples were studied in this paper. Mainly discussing the particle size distribution, mineral composition and physicochemical properties of bentonite, the aim was to provide a useful reference for the efficient development and utilization of bentonite resources. The results indicated that NM-bent. , HB-bent. and EZ-bent. were Ca (Mg)-bentonite while XZJ-bent. was Na-bentonite. The physicochemical properties of bentonite mainly depended on interlayer cations. Many properties indexes of Na-bentonite were better than that of Ca (Mg)-bentonite. Some properties indexes showed a poor reproducibility when tested by standard methods. The natural Na-bentonite has excellent properties and extensive application prospects while Ca (Mg)-bentonite needed for further processing to meet the demand of the application field.
Clinical chemistry, growth and PCB levels in beef cattle exposed to a PCB fire

After the Saint‐basile‐le‐Grand region, Province of Quebec, Canada, was contaminated by PCBs, sixty‐five beef cattle heifers were housed at an experimental farm for a period of ten months. Body fat PCB levels were measured on day 0, 117 and 203 of the study to determine if the beef cattle could eliminate these xenobiotics over a ten month period when fed an equilibrated ration. Clinico‐pathological parameters and weight gain were measured at various intervals during this study to evaluate the long term health effects of PCBs on the heifers. On day 0 of the study, which is actually 160 days after the PCB fire, the highest PCB level found was 3.20 μg/g of body fat. The mean body fat PCB level was 0.52 μg/g at the start of the study. Congeners BZ #118, BZ #138, BZ #153 and BZ #180 represented approximately 80% of all the PCBs present in the body fat on day 0 of the study. The body fat PCB levels declined either by metabolism or dilution during the study since the body fat PCB levels decreased to a mean value.
Mensurando o impacto do FNDE sobre o crescimento econômico

A contribuicao do capital humano para o processo de crescimento da renda per capita e amplamente aceita na literatura economica. Neste trabalho, propoe-se uma versao alternativa aos modelos desenvolvidos por Mankiw, Romer e Weil (1992) e posteriormente generalizado por Bernanke e Gurkaynak (2001), na qual incorporou-se uma variavel denominada estruturante, relacionada a aspectos de apoio a realizacao do capital humano. Utilizando uma base de dados em painel para os estados brasileiros no periodo de 1994 a 2016, avaliou-se empiricamente a relevância da inclusao dessa variavel e seu impacto sobre o crescimento economico. Os resultados mostram que o FNDE, por meio da variavel capital estruturante, se apresenta estatisticamente significante para o crescimento da economia e que o capital humano continua sendo um dos principais fatores de determinacao do nivel de renda.
Non‐planarity of hydroxamic acids. Structures of 3‐hydroxyxanthine dihydrate by X‐ray diffraction and hydroxyurea by neutron diffraction

The crystal structures of 3-hydroxyxanthine dihydrate and hydroxyurea both display pyramidality at the N atom to which the hydroxyl group is attached. The effect is measured by a 0.19 A, displacement of the hydroxyl O atom from the best plane of the aromatic ring in 3-hydroxyxanthine, and by a 0.23 A displacement of the H atom bound to hydroxylated N from the best plane through the heavy atoms in hydroxyurea. The effect appears to be characteristic of hydroxamic acids. An explanation in terms of molecular bonding is proposed. Crystal data based on 2(Cu Kat) -1.54051 A, and some particulars of the structure determination follow. 3-Hydroxyxanthine dihydrate: triclinic, Pi, Z = 2, cell parameters changed with X-ray exposure; stable values and precision measures after ~ 100 h exposure are a = 7.8383 (1), b = 8.4054 (2), c = 7.4408 (1) A,, cos a = -0.41039 (2), cos fl = -0.32227 (3), cos ), = 0.40919 (3), a = 114.229 (l), fl = 108.800 (2),)' -65.846 (2) °, t = 23 _+ 2°C. Solution by reiterative application of Sayre's equation, leastsquares refinement, 2138 observations, R(F) = 0.038. Hydroxyurea: monoclinic, P21/c, a -8.3962 (2), b = 4.9026 (2), c -8.8060 (2) A, cosfl --0.51820 (2), fl = 121.212 (1) °, t = 24°C. The H atoms of the hydroxyurea structure [ Berman & Kim (1967), Acta Cryst. 23, 180-181 ] were precisely located by neutron diffraction; least-squares refinement, 1955 observations, R (F) -0.042.
Social nudges for vaccination: How communicating herd behaviour influences vaccination intentions

Objectives This Registered Report attempted to conceptually replicate the finding that communicating herd immunity increases vaccination intentions (Betsch, et al., 2017, Nat. Hum. Behav., 0056). An additional objective was to explore the roles of descriptive social norms (vaccination behaviour of others) and the herd‐immunity threshold (coverage needed to stop disease transmission). Design An online experiment with a 2 (herd‐immunity explanation: present vs. absent) × 3 (descriptive norm: high vs. low vs. absent) × 2 (herd‐immunity threshold: present vs. absent) between‐subjects fractional design. Methods Sample consisted of 543 people (aged 18–64) residing in the United Kingdom. Participants first received an explanation of herd immunity emphasising social benefits (protecting others) in both textual and animated‐infographic form. Next, they were faced with fictitious information about the disease, the vaccine, their country’s vaccination coverage (80% or 20%), and the herd‐immunity threshold (90%). Vaccination intention was self‐rated. Results Compared to the control, communicating social benefits of herd immunity was effective in increasing vaccination intentions (F(1,541) = 6.97, p = . 009, Partial Eta‐Squared = 0.013). Communicating the descriptive norm or the herd‐immunity threshold alongside the herd‐immunity explanation demonstrated no observable effect. Conclusion Communicating social benefits of herd immunity increased self‐reported vaccination intentions against a fictitious disease, replicating previous findings. Although this result is positive, the practical relevance may be limited. Further research into the effect of social nudges to motivate vaccination is required, particularly with respect to the recent pandemic context and varying levels of vaccine hesitancy.
FT Raman and FTIR studies of titanias and metatitanate powders

FT Raman and FTIR/FTFIR skeletal spectra of different TiO2 powders, of both synthetic and commercial origin, and of Sr, Ba, Co and Ni metatitanates are reported and discussed in relation to the predictions of factor group analyses. The ability of vibrational techniques to show the presence of brookite impurities in both anatase and rutile, and of rutile in anatase, as well as to give morphological and surface information is emphasized. The spectra of SrTiO3, BaTiO3, NiTiO3 and CoTiO3 are also discussed in relation to their different structures (pervoskite and ilmenite-type).
Corporate Governance-Firm Performance Relationship: Empirical Evidence from African Countries. A Principal Components Analysis

This study investigated the relationship between corporate governance and firm performance, with evidence from Africa countries. The review of empirical studies from African countries had established a relationship between corporate governance and firm performance without consensus on a particular kind of relationship; while the result of the analysis using data on the return on assets, returns on equity, price earnings ratio, Tobin’s Q and constructed Performance Index as measures of firm performance and ownership structure as a measure of corporate governance revealed that corporate governance has a positive significant relationship with firm performance in Nigeria. The study concluded that though the agency costs of firms are very high, sound corporate governance is usually responsible for the positive performance of firms across African countries. Keywords: Corporate Governance, Agency theory, Firm Performance. DOI: 10.7176/EJBM/12-17-07 Publication date: June 30th 2020
Changes in water‐soluble and exchangeable ions, cation exchange capacity, and phosphorusmax in soils under alternating waterlogged and drying conditions

Abstract The effects of waterlogging and subsequent drying on pH, Eh, dissolved oxygen (DO), water soluble ions, exchangeable cations, cation exchange capacity (CEC), and phosphorus sorption capacity (Pmax) in three soils were studied (krasnozem, sandy loam, and highly organic material from a Melaleuca wetland). Fifty grams of each soil were mixed with 75 mL of distilled water, and left in a waterlogged state for 21 days. After removing a sample of the ponded water and sediment for analysis, the remaining water was discarded and the soils allowed to dry at room temperature for 21 days. All soils demonstrated a decrease in Eh, PO4, NO3 and DO, and an increase in pH, soluble organic carbon (SOC), iron (Fe), manganese (Mn), NH4, calcium (Ca), magnesium (Mg), potassium (K), and sodium (Na), in the solution phase due to waterlogging, but the magnitudes of change were greatest in soils with the higher levels of organic matter. Increases in Fe and Mn were attributed to the dissolution of Fe and Mn oxides under c.
Flexible Working Arrangement and Job Satisfaction in Mitigating Burnout: A Literature Review

Burnout is a chronic syndrome resulting from stress in the workplace that has not been successfully managed. Burnout has three dimensions like feeling of exhausted, low personal accomplishment, and depersonalization which reduce professional efficacy. In accounting, burnout is often experienced by auditors who have a high level of work due to many pressure and job deadline. Based on prior research using questionnaire, data can not be generalized in all big companies. On the other hand, limitations not only appear in the collinearity and normality tests but also appear in measurement of data. Some of the suggestions included in this paper may provide useful guidance for future research examining burnout auditors and use experimental methods.
A Joint Beamforming and Power-Splitter Optimization Technique for SWIPT in MISO-NOMA System

In this paper, we propose a joint beamforming and power-splitter optimization technique for simultaneous wireless power and information transfer in the downlink transmission of a multiple-input single-output (MISO) non-orthogonal multiple access (NOMA) system. Accordingly, each user employs a power splitter to decompose the received signal into two parts, namely, the information decoding and energy harvesting. The former part is used to decode the corresponding transmitted information, whereas the latter part is utilized for harvesting energy. For this system model, we solve an energy harvesting problem with a set of design constraints at the transmitter and the receiver ends. In particular, the beamforming vector and the power splitting ratio for each user are jointly designed such that the overall harvested power is maximized subject to minimum per-user rate requirements and the available power budget constraints at the base station. As the formulated problem turns out to be non-convex in terms of the design parameters, we propose a sequential convex approximation technique and demonstrate a superior performance compared to a baseline scheme.
Substrate-Integrated Defected Ground Structure for Single- and Dual-Band Bandpass Filters With Wide Stopband and Low Radiation Loss

In this article, two types of substrate-integrated defected ground structure (SIDGS) resonant cells with wide upper stopband and low radiation loss are presented for filter implementation. Such SIDGS resonant cells are composed of two dissimilar DGSs surrounded by the bottom ground and metal-vias, which cannot only introduce wide stopband with low radiation loss but also be flexible for integration. Based on the aforementioned SIDGS resonant cells, single- and dual-band bandpass filters (BPFs) are designed and fabricated. The single-band BPF centered at 2.40 GHz exhibits an ultrawide upper stopband up to 19.7 GHz with a rejection level of 31 dB, whereas the measured stopband total loss (i.e., including radiation, metal, and substrate loss) remains about 30% up to 19.3 GHz. The dual-band BPF operated at 2.10 and 3.78 GHz exhibits an ultrawide upper stopband up to 17.8 GHz with a rejection level of 23 dB, whereas the measured stopband total loss is less than 16% up to 11.4 GHz.