Miracle-dz/UniFAR-FTUs huggingface dataset:
Research Findings Polyhalite Effects on Winter Maize Crop Performance on Degraded Soil in Northern Vietnam

Maize ( Zea mays ) production in Vietnam, the major component of livestock feed (90%) in this country, recorded a 12-fold increase from 1981-2014, with an impressive mean annual yield increase (10%). Nevertheless, a substantial yield gap exists between the current local mean yield (4.7 Mg ha –1 ) and those of leading maize producing countries, such as USA (12.8 Mg ha –1 ). Degraded soil fertility and commonly imbalanced fertilization practices were suggested among the major reasons for this yield gap. Polyhalite, a natural marine sedimentary mineral consisting of a hydrated sulfate of potassium (K), calcium (Ca), and magnesium (Mg) was examined as a potential partial substitute for muriate of potash (MOP) as the K donor, with the advantage of more balanced mineral nutrition being a four-in-one fertilizer. An experiment was carried out from August until early December 2016 in northern Vietnam, comparing maize crop performance under six fertilizer treatments: farmers’ practice (120 kg K 2 O ha –1 ); control (no K applied); 60 kg K 2 O ha –1 , applied through MOP; and 60, 90, and 120 kg K 2 O ha –1 , applied through combinations of polyhalite and MOP at 1:1 ratio at the K 2 O level. All treatments received farmyard manure (FYM) at 10 t ha –1 , 180 kg N ha –1 (urea) and 90 kg P 2 O 5 ha –1 (superphosphate). The combinations of MOP and polyhalite gave rise to significantly higher fodder yields, in grains as well as husks and corncobs. Interestingly, the differences between the three combinations were not statistically significant for most of the yield parameters, suggesting that lower K rates, such as 60 or 90 kg K 2 O ha –1 , might be sufficient to obtain reasonable maize yields. The contribution of polyhalite to prolonged K availability, and to more balanced crop nutrition, was especially demonstrated when treatments with a similar K 2 O rate (60 kg ha –1 ) were compared; the combined fertilizer displayed significantly greater vegetative biomass and kernel yield. An economic analysis showed that under the circumstances of the present study, the polyhalite and MOP combination at a rate of 90 kg K 2 O ha –1 was the most profitable practice, far above the output from farmers’ usual practice. The economic analysis also clearly demonstrated that no K application might lead to a substantial loss on investment. In conclusion, adequate K supply is essential to profitable winter maize production under the climatic and edaphic conditions in northern Vietnam. Furthermore, combinations of polyhalite and MOP can open new horizons in enhancing maize and other crops’ performance in Vietnam.
THE CORONAL ABUNDANCES OF MID-F DWARFS

A Chandra spectrum of the moderately active nearby F6 V star π3 Ori is used to study the coronal properties of mid-F dwarfs. We find that π3 Ori's coronal emission measure distribution is very similar to those of moderately active G and K dwarfs, with an emission measure peak near log T = 6.6 seeming to be ubiquitous for such stars. In contrast to coronal temperature, coronal abundances are known to depend on spectral type for main sequence stars. Based on this previously known relation, we expected π3 Ori's corona to exhibit an extremely strong “first ionization potential (FIP) effect,” a phenomenon first identified on the Sun where elements with low FIP are enhanced in the corona. We instead find that π3 Ori's corona exhibits a FIP effect essentially identical to that of the Sun and other early G dwarfs, perhaps indicating that the increase in FIP bias toward earlier spectral types stops or at least slows for F stars. We find that π3 Ori's coronal characteristics are significantly different from two previously studied mid-F stars, Procyon (F5 IV-V) and τ Boo (F7 V). We believe π3 Ori is more representative of the coronal characteristics of mid-F dwarfs, with Procyon being different because of luminosity class, and τ Boo being different because of the effects of one of two close companions, one stellar (τ Boo B: M2 V) and one planetary.
Testing unsuccessfully: A speciﬁcation of the underlying mechanisms supporting its inﬂuence on retention Journal of Memory and Language

Five experiments were conducted to examine how unsuccessful retrieval inﬂuences learn- ing and subsequent memory. We used a cued-recall paradigm that produces many unsuccessful retrieval attempts (followed by feedback) and allows comparisons to be made between later memory for these trials and trials that only required reading or studying the pairs. On read trials participants studied cue–target pairs that were either weakly asso- ciated (DOOR–EXIT) or unrelated but identical in length (DOOR–SHOE). On test trials participants were given only the cue (either without [Exps. 1–3] or with [Exps. 4–5] prior experience with the pair items) and asked to guess the target which they were told was either semantically related or identical in length to the cue; then they received the correct cue–target pair to study. Unsuccessful retrieval attempts (i.e., guessing) relative to studying beneﬁted retention for weakly associated pairs but impaired retention for unrelated pairs. This pattern of results occurred regardless of study duration (Experiments 1A and 1B), level of processing of the cue (Experiment 2), whether relatedness was manipulated between or within subjects (Experiment 5), and when guessing involved episodic as opposed to semantic retrieval (Experiments 4 and 5). However, this pattern was partly mediated by the ability to retrieve incorrect guesses during a ﬁnal cued-recall test which may provide a link between the cue and target (Experiment 3). The current study demon- strates that unsuccessful retrieval attempts with immediate feedback not only enhance, but also can impair learning. This effect is robust and depends on elaborative semantic acti- vation related to the answer and the effectiveness of incorrect guesses as mediating cues.
A 2MASS ALL-SKY VIEW OF THE SAGITTARIUS DWARF GALAXY. VII. KINEMATICS OF THE MAIN BODY OF THE SAGITTARIUS dSph

We have assembled a large-area spectroscopic survey of giant stars in the Sagittarius (Sgr) dwarf galaxy core. Using medium resolution (R ∼ 15,000), multifiber spectroscopy we have measured velocities of these stars, which extend up to 12° from the galaxy's center (3.7 core radii or 0.4 times the King limiting radius). From these high-quality spectra we identify 1310 Sgr members out of 2296 stars surveyed, distributed across 24 different fields across the Sgr core. Additional slit spectra were obtained of stars bridging from the Sgr core to its trailing tail. Our systematic, large-area sample shows no evidence for significant rotation, a result at odds with the ∼20 km s−1 rotation required as an explanation for the bifurcation seen in the Sgr tidal stream; the observed small (⩽4 km s−1) velocity trend primarily along the major axis is consistent with models of the projected motion of an extended body on the sky with no need for intrinsic rotation. The Sgr core is found to have a flat velocity dispersion (except for a kinematically colder center point) across its surveyed extent and into its tidal tails, a property that matches the velocity dispersion profiles measured for other Milky Way dwarf spheroidal (dSph) galaxies. We comment on the possible significance of this observed kinematical similarity for the dynamical state of the other classical Milky Way dSphs in light of the fact that Sgr is clearly a strongly tidally disrupted system.
ENTREPRENEURIAL FACTORS AND SURVIVAL OF SMALL AND MEDIUM SCALE ENTERPRISES IN OGUN STATE, NIGERIA

Small and medium scale enterprises (SMEs) have been traced to the success of nations, though little research seems to have been conducted in the area of the relationship between entrepreneurial factors and survival of SME sector in Nigeria hence this study which examined the effect of entrepreneurial factors and the survival of SMEs in Ogun State, Nigeria. The study adopted cross-sectional survey research design. The SMEs that are registered with SMEDAN in Ogun state constitute the population of the study and the sample size was determined using Cochran formula. The number of copies of questionnaire administered was 420. The response rate of 95.2% was achieved. The data analysis employed both the descriptive and inferential analysis. The descriptive analysis described the properties of the data to show the respondents’ opinion using frequencies and percentage denotations as well as mean, median and standard deviations. The inferential analysis employed linear regression and multiple regression analysis to test the relationship existing between the independent and the dependent variables.The findings of the study revealed that entrepreneurial factors have a positive significant effect in survival of SMEs with succession plan having the most influence on survival and entrepreneurial characteristics having the least influence. Risk taking was rated highly by the respondents and is believed to have a great effect on SME survival in the state while wealth transition has the greatest influence on SME business activity among the succession plan factors considered. In conclusion, entrepreneurial factors are significant predictors of the organizational survival of SMEs. it is recommended that the government should create enabling environment for SMEs to operate and thrive to succeed providing enough infrastructural facilities that will enable SMEs to operate competitively and that the government should call for reorientation of SME owners so that the demand for high dynamism, flexibility and innovativeness can be met for SMEs to achieve its role in economic development and sustainability.
AC conductivity of Polyaniline/Mixed metal oxide (Pani/NiCoFe 2 O 3 ) Composites

Intrusion of Mixed metal oxides with polymer enhances the properties and applications of polymer composites. Metal oxide composites (MOC) were prepared by microwave irradiation of different single metal oxides using a polyvinyl alcohol as a fuel. Nickle oxide (NiO), Cobalt (Co) and Ferrous oxide (Fe 2 O 3 ) are used to form MOC. The conducting polymer (PANI/MOC) composites were synthesized by in-situ polymerization technique by mixing thoroughly grinded powder of MOC during the polymerization of aniline. The formation of mixed phases of the polymer together with the conducting emeraldine salt phase was confirmed by spectroscopic techniques like XRD, FTIR & SEM images indicated a systematic morphological variation of particles aggregated in the composite matrix as compared to the pure PANI. AC conductivity of these composites ware investigated in the frequency range 50 Hz to 5MHz. It is found that AC conductivity obeyed the variation of conductivity with wt% of MOC and could be related to conductivity relaxation phenomenon.
Outcomes of Extracorporeal Membrane Oxygenation in COVID-19–Induced Acute Respiratory Distress Syndrome: An Inverse Probability Weighted Analysis

IMPORTANCE: Although venovenous extracorporeal membrane oxygenation (VV ECMO) has been used in case of COVID-19 induced acute respiratory distress syndrome (ARDS), outcomes and criteria for its application should be evaluated. OBJECTIVES: To describe patient characteristics and outcomes in patients receiving VV ECMO due to COVID-19–induced ARDS and to assess the possible impact of COVID-19 on mortality. DESIGN, SETTING AND PARTICIPANTS: Multicenter retrospective study in 15 ICUs worldwide. All adult patients (> 18 yr) were included if they received VV ECMO with ARDS as main indication. Two groups were created: a COVID-19 cohort from March 2020 to December 2020 and a “control” non-COVID ARDS cohort from January 2018 to July 2019. MAIN OUTCOMES AND MEASURES: Collected data consisted of patient demographics, baseline variables, ECMO characteristics, and patient outcomes. The primary outcome was 60-day mortality. Secondary outcomes included patient characteristics, COVID-19–related therapies before and during ECMO and complication rate. To assess the influence of COVID-19 on mortality, inverse probability weighted (IPW) analyses were used to correct for predefined confounding variables. RESULTS: A total of 193 patients with COVID-19 received VV ECMO. The main indication for VV ECMO consisted of refractory hypoxemia, either isolated or combined with refractory hypercapnia. Complications with the highest occurrence rate included hemorrhage, an additional infectious event or acute kidney injury. Mortality was 35% and 45% at 28 and 60 days, respectively. Those mortality rates did not differ between the first and second waves of COVID-19 in 2020. Furthermore, 60-day mortality was equal between patients with COVID-19 and non-COVID-19–associated ARDS receiving VV ECMO (hazard ratio 60-d mortality, 1.27; 95% CI, 0.82–1.98; p = 0.30). CONCLUSIONS AND RELEVANCE: Mortality for patients with COVID-19 who received VV ECMO was similar to that reported in other COVID-19 cohorts, although no differences were found between the first and second waves regarding mortality. In addition, after IPW, mortality was independent of the etiology of ARDS.
Evolution of isolated overdensities as a control on cosmological N-body simulations

Beyond convergence studies and comparison of different codes, there are essentially no controls on the accuracy in the non-linear regime of cosmological N body simulations, even in the dissipationless limit. We propose and explore here a simple test which has not been previously employed: when cosmological codes are used to simulate an isolated overdensity, they should reproduce, in physical coordinates, those obtained in open boundary conditions without expansion. In particular, the desired collisionless nature of the simulations can be probed by testing for stability in physical coordinates of virialized equilibria. We investigate and illustrate the test using a suite of simulations in an Einstein de Sitter cosmology from initial conditions which rapidly settle to virial equilibrium. We find that the criterion of stable clustering allows one to determine, for given particle number N in the “halo” and force smoothing ", a maximum red-shift range over which the collisionless limit may be represented with desired accuracy. We also compare our results to the so-called Layzer Irvine test, showing that it provides a weaker, but very useful, tool to constrain the choice of numerical parameters. Finally we outline in some detail how these methods could be employed to test the choice of the numerical parameters used in a cosmological simulation.
Association Between Critical Events in the PICU and Outcomes in Neighboring Patients

OBJECTIVE: PICU patients who experience critical illness events, such as intubation, are at high risk for morbidity and mortality. Little is known about the impact of these events, which require significant resources, on outcomes in other patients. Therefore, we aimed to assess the association between critical events in PICU patients and the risk of similar events in neighboring patients over the next 6 hours. DESIGN: Retrospective observational cohort study. SETTING: Quaternary care PICU at the University of Chicago. PATIENTS: All children admitted to the PICU between 2012 and 2019. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The primary outcome was a critical event defined as the initiation of invasive ventilation, initiating vasoactive medications, cardiac arrest, or death. The exposure was the occurrence of a critical event among other patients in the PICU within the preceding 6 hours. Discrete-time survival analysis using fixed 6-hour blocks beginning at the time of PICU admission was used to model the risk of experiencing a critical event in the PICU when an event occurred in the prior 6 hours. There were 13,628 admissions, of which 1,886 (14%) had a critical event. The initiation of mechanical ventilation was the most frequent event (n = 1585; 59%). In the fully adjusted analysis, there was a decreased risk of critical events (odds ratio, 0.82; 95% CI, 0.70–0.96) in the 6 hours following exposure to a critical event. This association was not present when considering longer intervals and was more pronounced in patients younger than 6 years old when compared with patients 7 years and older. CONCLUSION: Critical events in PICU patients are associated with decreased risk of similar events in neighboring patients. Further studies targeted toward exploring the mechanism behind this effect as well as identification of other nonpatient factors that adversely affect outcomes in children are warranted.
FUZZY SOFT MATRIX THEORY AND ITS APPLICATION IN DECISION MAKING

In this work, we define fuzzy soft ($fs$) matrices and theiroperations which are more functional to make theoretical studies inthe $fs$-set theory. We then define products of $fs$-matrices andstudy their properties. We finally construct a $fs$-$max$-$min$decision making method which can be successfully applied to theproblems that contain uncertainties.
STUDY ON THE CRISIS MANAGEMENT PRACTICE OF TRAVEL AGENCIES DURING THE PERIOD OF COVID-19 PANDEMIC

The main purpose of this paper is to study the impact of travel agencies' crisis management practices on willingness of employee retention and business operations during the COVID-19 outbreak. The results of the study found that there are significant differences in the different statistical variables on crisis management practice and the effect of crisis management practice. Secondly, crisis management practices have a positive impact on employees' willingness to stay. Third, crisis management practices have a positive impact on business operations. Fourth, the talent management, labor force and cost control included in the crisis management practice have a positive impact on willingness of employee retention and business operation.
Posttransplantation Cyclophosphamide- and Sirolimus-Based Graft-Versus-Host-Disease Prophylaxis in Allogeneic Stem Cell Transplant Transplantation and Cellular Therapy

A B S T R A C T Post-transplantation cyclophosphamide (PTCy) has emerged as a promising graft-versus-host-disease (GVHD) prophylaxis in the setting of allogeneic hematopoietic stem cell transplantation (HSCT) from haploidentical donors and more recently in matched donor transplants. Herein, we describe our real-life experience on 249 adult patients undergoing allogeneic HSCT, from HLA-matched related (MRD), HLA-matched unrelated (MUD), or mis- matched related donors (MMRD). Patients received unmanipulated peripheral blood stem cells (PBSCs), using a GVHD prophylaxis with PTCy and sirolimus. Mycophenolate mofetil was added in MUD or MMRD. In the HLA- matched donor group (MRD, n = 48, MUD, n = 50), the cumulative incidence of grades II-IV and III-IV acute GvHD was 23% and 9% at 100 days, respectively. The cumulative incidence of chronic GvHD was 25% at 2 years, severe only for 5% of the patients. The cumulative incidences of relapse and transplant-related mortality (TRM) were 31% and 9% at 2 years, respectively. The 2-year overall survival (OS) was 72% and progression-free survival (PFS) 60%; the composite endpoint of GvHD/relapse-free survival (GRFS) was 52% at 2 years. In the haploidentical donor group (n = 151), we documented a cumulative incidence of grades II-IV and III-IV acute GVHD of 35% and 20% at 100 days, respectively, and a cumulative incidence of chronic GvHD of 39% at 2 years. We observed severe chronic GVHD in 15% of the patients. The cumulative incidence of relapse and TRM was 32% and 25% at 2 years, respec- tively. The 2-year OS was 48%, whereas PFS was 43%; GRFS was 28% at 2 years. However, more patients in the haploidentical group presented high/very high disease risk index (DRI) and higher HCT-comorbidity index. In patients classi ﬁ ed in the low-intermediate DRI, 2-year GRFS was 53% in MRD, 65% in MUD, and 46% in haploidentical HSCT ( P = .33). Sirolimus-PTCy platform deserves further investigation as an alternative to calcineurin-inhibitor (cid:1) based GVHD prophylaxis for all donor sources. In patients presenting a low-intermediate DRI, this strategy translates in relevant survival independently from the transplant source. © 2021 Published by Elsevier Inc. on behalf of The American Society for Transplantation and Cellular Therapy. evaluate the real-life outcomes of the platform for the of GVHD in the haploidentical and matched donor settings. analyzed the engraftment rates, the overall survival (OS), the TRM, the incidence of acute and chronic GVHD and the occur- rence of post-transplant toxicities. the survival the relapse the composite end point relapse-free
Patients quality of life while coping with their Psoriasis Qualitative Research

---------------------------------------------------------------------------------------------------------------------------------------ABSTRACT Background: A multi-factorial inflammatory condition that is common in dermatology is psoriasis. Our goal was to comprehend how psoriasis sufferers felt about their quality of life and to explore ways to make it better. Methods: This qualitative study involved 81 psoriasis patients who were treated as outpatients at the STNM Hospital in Sikkim, India. The Discourse of the Collective Subject approach was used to transcribe and analyse the interviews (DCS). Results: Well-being, happiness, leisure, wholesome eating, and financial security were all associated with high quality of life. However, their perspectives were significantly impacted by sickness symptoms, social and clothing restrictions, limitations on their professional pursuits, and the lack of a remedy. Increased public knowledge, stress reduction, disease acceptance, and interdisciplinary care were among the suggested changes. Conclusion: The participants' interpretations of quality of life are individualized, complex, based on their personal experiences, and connected to the progression of health and sickness. Improvements in QoL in psoriasis can be attributed to public health policies that support lowering social stigma and stress as well as interdisciplinary approaches to care.
Red cell distribution width as a proxy marker of hemoglobinopathies among an eastern Sudan patient population

Haemoglobinopathies are genetic hemoglobin morbidities marked by erythrocyte anisocytosis. Anisocytosis is measured by red cell distribution width (RDW), which is easily provided by hematology analyzers as a total blood count statement. In Sudan, the efficacy of RDW as a prognostic biomarker for hemoglobinopathies is limited and unsubstantiated.
DISCOVERY OF RELATIVISTIC OUTFLOW IN THE SEYFERT GALAXY Ark 564

We present Chandra High Energy Transmission Grating Spectra of the narrow-line Seyfert-1 galaxy Ark 564. The spectrum shows numerous absorption lines which are well modeled with low-velocity outflow components usually observed in Seyfert galaxies. There are, however, some residual absorption lines which are not accounted for by low-velocity outflows. Here, we present identifications of the strongest lines as Kα transitions of O vii (two lines) and O vi at outflow velocities of ∼0.1c. These lines are detected at 6. 9σ, 6. 2σ, and 4. 7σ, respectively, and cannot be due to chance statistical fluctuations. Photoionization models with ultra-high velocity components improve the spectral fit significantly, providing further support for the presence of relativistic outflow in this source. Without knowing the location of the absorber, its mass and energy outflow rates cannot be well constrained; we find lower limit of ⩾0.006% assuming a bi-conical wind geometry. This is the first time that absorption lines with ultra-high velocities are unambiguously detected in the soft X-ray band. The presence of outflows with relativistic velocities in active galactic nuclei (AGNs) with Seyfert-type luminosities is hard to understand and provides valuable constraints to models of AGN outflows. Radiation pressure is unlikely to be the driving mechanism for such outflows and magnetohydrodynamic may be involved.