Miracle-dz/UniFAR-FTUs huggingface dataset:
Evaluation on the performance fluctuation after water ingestion for a turbofan engine compressor during flight descent

Turbofan engine compressor is most severely threatened by the entry of liquid water during flight descent. This study aims to deeply understand the fluctuations of compressor performance parameters caused by water ingestion through frequency spectrum analysis. The water content and droplet diameter distribution are determined based on the real heavy rain environment. Results reveal that most of the droplets actually entering the core compressor have a particle size of less than 100 μm. In addition, the formation and motion of water film plays a critical role in affecting the fluctuation characteristics. Water ingestion deteriorates the compression performance and aggravates the unsteady fluctuations of the fan. However, the performance of the core compressor is less affected by water ingestion, but their fluctuations are still exacerbated. For some important parameters, such as inlet mass flow rate, total pressure ratio, total temperature ratio, compression work and efficiency, their main frequency of fluctuation are switched from the original blade passing frequency to the rotor passing frequency, and their amplitudes are correspondingly amplified to varying degrees. These phenomena can be observed in both the fluctuations of the fan and core compressor. Moreover, the operating point of them will be in the long-period and large-amplitude fluctuations, which leads them experiences the non-optimal state for a long time and threatens their operating stability.
Physician beliefs and management practices of coexistent Asthma-Allergic Rhinitis: Indian results from multi-country ASPAIR study

Frequent coexistence and strong etiological linkage between asthma and allergic rhinitis (AR) result in higher burden with comorbid condition than individual disease. Aim: To understand attitude, perceptions, and current management practices among general practitioners (GPs) and pediatricians towards coexistent asthma-AR. Settings and Design: A cross sectional survey was conducted in India, China, Malaysia, Vietnam, etc. Results presented here are focused on India. Physicians working in public and private sector of 10 Metropolitan cities were approached in person for this survey. Materials and Methods: A representative national sample of physicians was recruited at hospitals and clinics using a probability-based sampling methodology for a total of 200 physician in India. Results: 98 GPs and 102 pediatricians in India were surveyed. Clinical features and family history of atopy was used by 96% and 82% physicians, respectively to form a diagnosis of asthma. 54% of physicians enquired about common triggers, 48% conducted spirometry. 25% of physicians used patient outcome questionnaires to assess control. AR was diagnosed by nasal (91% of physicians) or ocular symptoms (72% of physicians) and 32% performed skin prick test or serum Immunoglobulin E (IgE). In uncontrolled coexisting asthma-AR, 78% of physicians modiﬁed treatment, 21% of physicians referred to a specialist. 88% of physicians were concerned that treating both conditions required added medications, 59% of physicians felt managing both simultaneously was difﬁcult, and 55% of physicians believed it was enough to manage more severe condition. Conclusion: Study highlights low implementation of guidelines despite awareness and need for continued medical education to encourage appropriate diagnosis and management of co-existent asthma-AR. Key Message: Though the physicians are aware of the guidelines, there was poor utilization in clinical practice. This indicates a need for increase in awareness of guideline recommendations on co existent asthma-AR and improving management of patients. This also eludes to the development of an easy to use diagnostic tool for asthma- AR co-existence.
Highly efficient dye adsorption and removal: a functional hybrid of reduced graphene oxide–Fe3O4 nanoparticles as an easily regenerative adsorbent

A functional hybrid of reduced graphene oxide (RGO)–Fe3O4 nanoparticles (NPs) has been chemically synthesized with exceptionally high yield and tunable RGO/Fe3O4 ratio. The adsorption behaviors of a series of dyes using this hybrid as the adsorbent are systematically investigated in aqueous solutions through real-time monitoring of the fingerprint spectral changes of the dyes. The results show that, benefiting both from the surface property of RGO and from the magnetic property of Fe3O4, the hybrid possesses quite a good (although unoptimized) and versatile adsorption capacity to the dyes under investigation, and can be easily and rapidly extracted from water by magnetic attraction. Most importantly, it is found that by simply annealing in moderate conditions, this hybrid adsorbent can be easily and efficiently regenerated for reuse with hardly any compromise of the adsorption capacity. Furthermore, the adsorbability of this hybrid shows satisfactory tolerance against the variations in both pH environment and dye concentration. Even when exposed to a multi dye cocktail, the hybrid can work well without suppressing the adsorption capacity for each of the dyes, as compared with that measured separately. The inherent advantages of this nanostructured adsorbent, such as non-compromised adsorption capacity, low cost, easy, rapid extraction and regeneration, good tolerance, multiplex adsorbability, and handy operation, may pave a new, efficient and sustainable way towards highly-efficient dye pollutant removal in Earth's water environments.
On methods of quantitative analysis of the company’s financial indicators under conditions of high risk of investments

The paper investigates the methods of quantitative analysis of hidden statistical relationships of the financial indicators of companies under conditions of high investment risk. A new semi-parametric method for estimating tail dependence indicators using BB1 and BB7 dependence structures is proposed. For a dataset containing the cost indicators of leading Russian companies, computer experiments were carried out, as a result of which it was shown that the proposed method has a higher stability and accuracy in comparison with other considered methods. Practical application of the proposed risk management method would allow financial companies to assess investment risks adequately in the face of extreme events.
Kobus vardonii (Artiodactyla: Bovidae)

Abstract: Kobus vardonii (Livingstone, 1857) is a bovid commonly known as the puku. It is a medium-sized antelope with a golden-yellow coat and white underparts, sexually dimorphic as only males carry lyre-shaped horns, and according to current taxonomy it is one of 12 extant species in the genus Kobus. Adult males defend territories, whereas females and young move around in unstable groups. Feeding on a great variety of grasses, K. vardonii occurs in grasslands along rivers and lakes in southern central Africa with Zambia being the center of its distribution and Tanzania holding the largest population. It is classified as “Near Threatened” on the IUCN Red List of Threatened Species.
Prognostic Role of Matrix Metalloproteinase Expression in Meningioma: A Cross-Sectional Study.

Background: Meningioma is the most common intracranial tumor in adults. In addition to the extent of tumor surgical resection and WHO grade, angiogenesis is a prognostic factor that is influenced by MMP-2. Our study examined the association of these prognostic factors with MMP-2 expression in meningioma. Methods: A cross-sectional study of patients diagnosed with meningioma between January 2008 and December 2017 was conducted. All samples were re-reviewed and subjected to immunohistochemical staining for Ki67, MMP-2, and CD34. Pearson’s chi-squared test and Fisher’s exact test were used to examine the association of MMP-2 expression with the WHO grade and microvascular density (MVD). Results: The study included 99 patients aged 23–75. Most patients were female (73.7%). This study included 85 cases of low-grade meningioma (grade I) and 14 cases of high-grade meningioma (grade II, 11; grade III, 3). The most common subtypes were meningothelial, transitional, and fibroblastic. In total, 62 of 85 patients with low-grade meningioma and 10 of 14 patients with high-grade meningioma exhibited high MMP-2 expression, and the difference in the rates between the groups was not significant. Most patients in this study displayed MVD scores of 1+ (54/99) and 2+ (33/99). Of the 54 patients with an MVD score of 1+, 42 exhibited high MMP-2 expression. MMP-2 was expressed by all patients with meningioma. Conclusion: In the future, more samples are required, in high-grade tumors, to prevent bias, and more specific immunohistochemical markers should be used to evaluate angiogenesis.
Kontrol Tegangan pada Sistem Hybrid Panel Surya-Turbin Angin Menggunakan Manajemen Penyimpanan Baterai

hybrid panel surya dan turbin angin dalam memaksimalkan kesetimbangan tegangan. Strategi kontrol tegangan sangat perlu dirancang terutama saat terjadinya perubahan beban yang berbeda-beda, jika tidak dilakukan maka akan berpengaruh kepada kesetimbangan daya yang diberikan ke beban dan biasa mengakibatkan rusaknya peralatan yang digunakan. Sumber energi matahari dan angin memberikan pengaruh yang besar terhadap kestabilan kualitas dari tegangan yang diberikan karena sifat energi terbarukan ini yang bersifat fluktuatif. Makalah ini mengusulkan kontrol strategi penggunaan PI dan perangkat pengkondisian sinyal yang di modifikasi menggunakan pemodelan charging dan discharging baterai dengan tetap mempertimbangkan lifetime baterai menggunakan software PSIM sehingga di dapatkan hasil optimal tegangan dari sistem hybrid panel surya dan turbin angin. Baterai akan digunakan sebagai penyimpanan energi saat daya keluaran hybrid berlebih yang kemudian akan digunakan kembali saat daya keluaran hybrid kurang dari kebutuhan beban. Perangkat pengkondisian sinyal pada penelitian ini menggunakan lima buah converter daya yaitu satu buah AC to DC converter , dua buah DC-DC boost converter , satu buah bidirectional converter , satu buah DC-C bidirectional converter . Daya keluaran maksimum menggunakan MPPT yang diaplikasikan pada boost converter , sedangkan untuk mengatur tegangan melalui charging dan discharging baterai melalaui bidirectional buck-boost converter . Strategi tersebut memberikan tegangan yang sesuai di sisi AC
O software R e a pesquisa com Alimentos e Nutrição

O software R surge com a criação da linguagem de programação R. Criada pelos pesquisadores Brian Ripley e Bill Venables (Figura 1a e 1b), a linguagem R tem a aparência da linguagem S e a semântica da linguagem Scheme. Particularmente, na pesquisa em Alimentos e Nutrição, o software R desempenha importante papel na análise, visualização e predição de dados.
Specific Proline and Hydroxyproline Detection Method by Post-column Derivatization for High-performance Liquid Chromatography

A specific detection method for hydroxyproline by post-column derivatization with 7-chloro-4-nitrobenzo-2-oxa-l,3-diazole was developed after chiral resolution by ligand-exchange chromatography. The addition of ethylenediaminetetraacetic acid to the reaction mixture was effective to achieve the post-column reaction. The calibration curve for trans-4-hydroxy-L-proline shows linearity from 7.6 pmol up to 7600 pmol.
Heterostructured Nanophotocatalysts for Degradation of Organophosphate Pesticides from Aqueous Streams

The present paper focuses on the synthesis, characterization and application of nanophotocatalyst for degrada- tion of quinalphos and monocrotophos. Novel heterostructured ZnO/TiO2 photocatalyst (Z9T) was prepared and characterized with X-ray diffraction (XRD), SEM and UV-vis diffuses reflectance spectroscopy. The average crystalline size of synthe- sized Z9T was found to be 21.48 nm. The pesticides were degraded in the presence of nanophotocatalysts i.e., TiO2, ZnO, TiO2/ZnO mixed in various proportions and heterostructured nanophotocatalyst synthesized by Sol-Gel method. The batch experiments were performed by adding photocatalyst to 100 ml of pesticide solution and suspension was subjected to irradia- tion under UV light. In case of mixed catalyst, the maximum degradation of monocrotophos and quinalphos has been observed when ZnO and TiO2 were in the ratio of 7:3 and 8:2 respectively. The degradation efficiency with synthesized heterostruc- tured nanophotocatalyst (Z9T) was found to be comparable with TiO2.
Adsorptive Removal of Rhodamine B Using Novel Adsorbent-Based Surfactant-Modified Alpha Alumina Nanoparticles

The objective of the present study is to investigate removal of cationic dye, rhodamine B (RhB), in water environment using a high-performance absorbent based on metal oxide nanomaterials toward green chemistry. The adsorption of sodium dodecyl sulfate (SDS) onto synthesized alpha alumina (α-Al2O3) material (M0) at different ionic strengths under low pH was studied to fabricate a new adsorbent as SDS-modified α-Al2O3 material (M1). The RhB removal using M1 was much higher than M0 under the same experimental conditions. The optimal conditions for RhB removal using M1 were found to be contact time 30 min, pH 4, and adsorbent dosage 5 mg/mL. The maximum RhB removal using M1 achieved 100%, and adsorption amount reached 52.0 mg/g. Adsorption isotherms of RhB onto M1 were well fitted by the two-step adsorption model. The electrostatic attraction between positive RhB molecules and negatively charged M1 surface controlled the adsorption that was evaluated by the surface charge change with zeta potential and adsorption isotherms. Very high RhB removal of greater than 98% after four regenerations of M1 and the maximum removal for all actual textile wastewater samples demonstrate that SDS-modified nano α-Al2O3 is a high-performance and reusable material for RhB removal from wastewater.
On the risk of failure to prevent induction motors permanent damage, due to the short available time‐to‐diagnosis of inter‐turn short‐circuit faults

As one of the most important assets of the industry, it is crucial to fully characterise all failure modes showing potential to degrade the normal operation of induction motors (IMs). One of the failure modes which lacks detailed knowledge and proper diagnostic tools is the inter ‐ turn short ‐ circuit (SC) fault. Given the severity of such failure mode, it is pivotal to ensure that incipient fault symptoms are correctly identified, thus preventing critical damages to the IM. Unfortunately, the state ‐ of ‐ the ‐ art does not provide enough data to confirm whether the available diagnostic tools act out in due time to avoid permanent damage to the faulty IM. To evaluate the impacts of this failure mode in the temperature of the stator windings of an IM, this paper presents the results obtained from two alternative thermal models of the same IM, resorting to the finite The results
Molecularly Imprinted Cyclodextrins as Selective Receptors for Steroids1

β-Cyclodextrin (β-CyD) was cross-linked by toluene 2,4-diisocyanate in the presence of various steroids in dimethyl sulfoxide, and the steroids were removed after the polymerization. The molecularly imprinted β-CyD polymer, obtained by using cholesterol or stigmasterol as the template, efficiently and reversibly bound the steroid in the mixtures of water and tetrahydrofuran. In these polymers, the mutual orientation of β-CyD molecules is regulated so that they cooperatively bind the target guests which are too large to be included in the cavity of one β-CyD molecule. When either the alkyl residue at the 17-position or the hydroxyl residue at the 3-position is absent from the template, however, the molecular imprinting is much less efficient. The mechanism for the imprinting and the structure of the guest-binding sites in the imprinted polymers have been proposed.
Polar Clouds and Sulfate Aerosols

Polar stratospheric clouds are known to play an important role in ozone destruction over the north and south poles. One puzzle is how the clouds can continuously form throughout the winter. In her Perspective, Tolbert describes results by Koop and Carslaw (p. 1638) that reveal a new pathway for cloud regeneration.
An Improved Predictive Model for Determining the Permeability Coefficient of Artificial Clayey Soil Based on Double T2 Cut-Offs

Permeability is one of the most important engineering properties of clayey soil. However, the traditional method for determining the permeability coefficient is time-consuming. To establish a simple and accurate predictive method to obtain the permeability coefficient of artificial clayey soil based on the double cut-off transverse relaxation times (T2 cut-offs) using low-field nuclear magnetic resonance (NMR) technology, eight kinds of artificial clayey soil with different mineralogical compositions were prepared in the laboratory. Evaporation tests at 40°C were carried out on the saturated artificial clayey soil samples in an oven. During the evaporation process, NMR tests were also performed on the artificial clayey soil every hour. The results showed that the evaporation process could be divided into three stages according to different evaporation rates: the constant rate stage (CRS), the falling rate stage (FRS), and the residual stage (RS). The water evaporated in the CRS and FRS was defined as the absolute movable water and the partially movable water, respectively. The water that could not evaporate in the RS was defined as the immovable water. Based on the cumulative signal amplitudes in the T2 spectrum corresponding to different kinds of water, the double T2 cut-offs were defined. On the basis of the double T2 cut-offs and T2 spectrum of the saturated sample, an improved Timur–Coates (TC) model was established. The prediction capability of the improved model was evaluated by finding the determination coefficient (R2), mean absolute error (MAE), and root-mean-square error (RMSE). Compared with the typical TC model, the prediction accuracy of the improved model was much higher. In addition, the relationships between the double T2 cut-offs and fractal dimension (D) of the T2 spectrum of saturated artificial clayey soil were also identified.
Federal Synergy Computing Model Based on Network Interconnection

To solve the shortage problem of the computing power provided by the single machine or the small cluster system in scientific research, we offer a collaborative computing system for users. This system has massive operation ability. It introduced a scalable mixed collaborative computing model. Through the internet and the heterogeneous computing equipment, the system uses the task decomposition model. This system can solve the research and development problem because of the shortage of capacity. To test the model, a subtask decomposition example is used. The results of the example analysis show that the computing work can obtain the shortest computation time when the number of calculation nodes is more than the number of subtasks; Maximum calculation efficiency can be achieved when the number of the calculating nodes closes to the number of subtasks. Through joint collaborative computing, the extensible mixed collaborative computing mode can effectively solve the mass computing problem for the system with heterogeneous hardware and software. This paper provides the reference for the system, which provides large scale computing power through the Internet and the research problem of due to the lack of computing ability.
Methods Used and Application of the Mouse Grimace Scale in Biomedical Research 10 Years on: A Systematic Scoping Review

The Mouse Grimace Scale (MGS) was developed 10 years ago to assess pain through characterisation of changes in five facial features or action units. The strength of the technique is that it is proposed to be a measure of spontaneous or non-evoked pain. A comprehensive scoping review of the academic literature was performed. The MGS has been employed mainly in evaluation of acute pain, particularly in the pain and neuroscience research fields. There has however been use of the technique in a wide range of fields, and based on limited study it does appear to have utility for pain assessment across a spectrum of animal models. Use of the method does allow detection of pain of a longer duration, up to a month post-initial insult. There has been less use of the technique using real-time methods and this is an area in need of further research.
Comparison of Arthroscopic Surgery Versus Open Surgical Repair of the Anterior Talofibular Ligament: A Retrospective Study of 80 Patients from a Single Center

Background This retrospective study from a single center aimed to compare the safety and clinical outcomes of arthroscopic surgery vs open surgical repair of the anterior talofibular ligament (ATFL). Material/Methods We randomly divided 80 patients with ATFL injury divided into 2 groups: an open surgery group and an arthroscopic group. The operation time, intraoperative bleeding volume, and the postoperative recovery time of all patients were analyzed. The anterior displacement and talus tilt angle, the American Orthopedic Foot and Ankle Society Ankle-Hindfoot Score (AOFAS), the Jersey Shore Science Fair (JSSF) ankle-hindfoot scale score, and the Karlsson Ankle Functional Score (KAFS) were compared at 6 months, 1 year, and 2 years after surgery. We collected data on the incidence of postoperative complications during follow-up. All significant results were supported with a P value. Results The operation time, intraoperative bleeding volume, and postoperative recovery time in the arthroscopic group were better than in the open group (P<0.05). The AOFAS, JSSF, and KAFS in the arthroscopic group were better than in the open group at 6 months after the operation (P<0.05). The AOFAS, JSSF, and KAFS scale scores were not significantly different between the 2 groups at 1 year and 2 years after the operation (P<0.05). Conclusions The findings from this retrospective study showed that the use of arthroscopic surgical repair of the ATFL is a safe minimally invasive technique with reduced blood loss and surgical duration and good clinical outcomes.
Factors Influencing the Participation in IIUM Zero Single-Use Plastic Campaign

IIUM Zero Single-Use Plastic Campaign was launched in February 2019, requiring everyone in IIUM not to use plastics including plastic straws, plastic bags, and plastic food containers. As such, this study attempted to gauge the IIUM community’s reception towards the Zero Single-Use Plastic Campaign. The objectives of this study are: (1) to determine the level of awareness, perception, attitude, readiness, and behaviour towards the Zero Single-Use Plastic Campaign; (2) to analyze the relationship among awareness, perception, attitude, readiness, and behaviour in the Zero Single-Use Plastic Campaign; and (3) to find out the best predictor of community behaviour towards such campaign. The study tested the theory of planned behaviour and employed a quantitative research design using the survey method with the questionnaire as its research instrument for data collection. A total of 398 respondents participated in the study. The results of the study show that there is a high level of awareness, perception, attitude, readiness, and behaviour towards the Zero Single-Use Plastic Campaign. Also, there are positive and significant relationships between the factors and behaviour (usage). Readiness is the best predictor of the zero single-use plastic usage. All the hypotheses are supported. Therefore, it can be concluded that the IIUM campus community supports the campaign. Hence, the theory of planned behaviour holds true and is supported by this study. Keywords: Attitude, awareness, behaviour, perception, readiness towards the campaign.