Miracle-dz/UniFAR-FTUs huggingface dataset:
A facile assay for rapid detection of COVID-19 antibodies

The outbreak of new coronavirus disease (COVID-19) has quickly spread all over the world. Real time reverse transcriptase polymerase chain reaction (rRT-PCR) for nucleic acid detection has become the standard method for clinical diagnosis of COVID-19 infection. But these rRT-PCR tests have many inherent limitations, and carry a high false negative rate. It is an urgent to develop a method to accurately identify the vast infected patients and asymptomatic viral carriers from the population. In this article, we present the principle and procedure of developing a colloidal gold immunochromatographic assay (GICA) for rapid detection of COVID-19-specific antibodies. The detection kit can be used to detect immunoglobulin M (IgM) and IgG of COVID-19 in human blood samples within 15 minutes, and to identify different stages of viral infection. Test results can be digitalized using an office scanner and a FiJi software with appropriate confidence interval (CI) setting. Based on analysis from 375 samples, we calculated that overall sensitivity and specificity of the assay were 95.85% and 97.47%, respectively. Compared with rRT-PCR, this assay has many advantages including convenience and rapid detection. The detection kit can be widely used in hospitals, clinics and laboratories for rapid screening of both symptomatic and asymptomatic COVID-19 carriers in large scale.
E–Z isomerization of 3-benzylidene-indolin-2-ones using a microfluidic photo-reactor

Here, we report controlled E–Z isomeric motion of the functionalized 3-benzylidene-indolin-2-ones under various solvents, temperature, light sources, and most importantly effective enhancement of light irradiance in microfluidic photoreactor conditions. Stabilization of the E–Z isomeric motion is failed in batch process, which might be due to the exponential decay of light intensity, variable irradiation, low mixing, low heat exchange, low photon flux etc. This photo-μ-flow light driven motion is further extended to the establishment of a photostationary state under solar light irradiation.
The role of school‐based research champions in a school–university partnership

The value of teachers’ engagement in and with research is long recognised and it is acknowledged that school – university research partnerships are one way of enabling such engagement. But we know little about how research-based knowledge is negotiated into school practices. Here we draw on data from nine ‘research champions’, who are teachers in schools which are part of the Oxford Education Deanery, a research partnership with a university department. Taking a cultural/histori-cal approach, the study examined the strategic intentions and actions in the activities of the champions as they negotiated research-based knowledge into their schools. Data comprised 59 completed templates that described what they did and why. Findings revealed differences between those with close links with senior leaders — who could take a whole-school approach — and those whose reach was restricted by their position in school practices. Nonetheless, all the champions carefully selected and targeted research in ways that reflected their knowledge of local contexts. The findings point to the need to incorporate the champion role into school systems and for universities to value the role as they develop their own research agenda. to people to share the results of their research in the most user-friendly way
Assessing Soil Organic Carbon in Soils to Enhance and Track Future Carbon Stocks

Soils represent the largest terrestrial sink of carbon (C) on Earth, yet the quantification of the amount of soil organic carbon (SOC) is challenging due to the spatial variability inherent in agricultural soils. Our objective was to use a grid sampling approach to assess the magnitude of SOC variability and determine the current SOC stocks in three typical agricultural fields in Maryland, United States. A selected area in each field (4000 m2) was divided into eight grids (20 m × 25 m) for soil sample collection at three fixed depth intervals (0–20 cm, 20–40 cm, and 40–60 cm). Soil pH in all fields was significantly (p 0.96) with SOC stocks, which were lower in sub-surface than surface layers. Differences in C/N ratios and δ13C signatures were observed among the three fields. The calculated values of SOC stocks at 0–60 cm depth ranged from 37 to 47 Mg/ha and were not significantly different in three fields likely due to the similar parent material, soil types, climate, and a short history of changes in management practices. A small variability (~10% coefficient of variation) in SOC stocks across eight sampling grids in each field suggests that re-sampling these grids in the future can lead to accurately determining and tracking changes in SOC stocks.
Twenty years of Baltic Boreal coastal meadow restoration: has it been long enough?

The restoration of a threatened type of seminatural grassland—the Baltic Boreal coastal meadows—began in Estonia in 1997. The main causes of degradation of these communities were land abandonment and overgrowth by reed. In 2015, we resurveyed 14 sites and classified as (1) permanently managed or (2) restored before 2005, or (3) after 2005. In 2015, all sites were managed under the EU agri‐environmental scheme and classified as permanently managed or restored before or after 2005. The resurvey focused on assessment of the long‐term success of restoration, comparing the vegetation parameters of restored meadows with permanently managed meadows (which were considered as reference). Our study revealed that historical management patterns have an impact on the species richness of these habitats, as more species were found in historically mown meadows, even if the sites were restored by grazing. However, species richness was not an important indicator of coastal meadow recovery. The best indicators of restoration success are evenness and coverage of low‐lying, light‐demanding, salt‐tolerant, wintergreen, cryptophyte, and hemicryptophyte plant species. Phragmites australis is a good indicator species for the habitat, as its abundance indicates poor habitat quality. The study indicated that the recovery of coastal meadow habitat from abandonment requires more than 15 years of restoration activities, and suggested the 3‐year restoration period covered by conservation measures and funds is not enough. Therefore, we recommend that agri‐environmental schemes should support additional restoration activities for recently restored meadows which are entering the management scheme.
Precarity as a Biographical Problem? Young Workers Living with Precarity in Germany and Poland

In the context of debates on the meanings of precarious employment, this article explores the varied ways young workers in Poland and Germany are managing precarity. Biographical narrative interviews with 123 young people revealed four different ways interviewees experienced precarity. These different approaches reflected varied ways in which interviewees were orientated to work, the meanings attributed by them to precarious employment and the material and cultural resources they possessed. It is argued that despite institutional differences, precarity in both countries is experienced similarly and represents a tendency to endure precarity and cope with it by individual means. Simultaneously, criticisms of precarity were more typical of young Poles than Germans. Cross-country variances were explained by the different mechanisms of institutional support for young workers and the greater belief in meritocracy in Germany.
Biomarker Distributions in (Sub)‐Arctic Surface Sediments and Their Potential for Sea Ice Reconstructions

To evaluate the present sea ice changes in a longer‐term perspective, the knowledge of sea ice variability on preindustrial and geological time scales is essential. For the interpretation of proxy reconstructions it is necessary to understand the recent signals of different sea ice proxies from various regions. We present 260 new sediment surface samples collected in the (sub‐)Arctic Oceans that were analyzed for specific sea ice (IP25) and open‐water phytoplankton biomarkers (brassicasterol, dinosterol, and highly branched isoprenoid [HBI] III). This new biomarker data set was combined with 615 previously published biomarker surface samples into a pan‐Arctic database. The resulting pan‐Arctic biomarker and sea ice index (PIP25) database shows a spatial distribution correlating well with the diverse modern sea ice concentrations. We find correlations of PBIP25, PDIP25, and PIIIIP25 with spring and autumn sea ice concentrations. Similar correlations with modern sea ice concentrations are observed in Baffin Bay. However, the correlations of the PIP25 indices with modern sea ice concentrations differ in Fram Strait from those of the (sub‐)Arctic data set, which is likely caused by region‐specific differences in sea ice variability, nutrient availability, and other environmental conditions. The extended (sea ice) biomarker database strengthens the validity of biomarker sea ice reconstructions in different Arctic regions and shows how different sea ice proxies combined may resolve specific seasonal sea ice conditions.
Frontiers in Dentistry

Article type: Original Article Objectives: This study aimed to evaluate the mucograft collagen matrix (CM) to increase keratinized tissue around teeth compared to free gingival graft (FGG). Materials and Methods: The present double-blind, randomized, controlled clinical trial studied 12 patients who had 2 mm or less keratinized gingiva bilaterally around mandibular premolars. The 6-month width of keratinized tissue, periodontal parameters (preoperatively and 1, 3, and 6 months postoperatively), color match, pain, and total surgical time were measured. Results: The mean dimensional change of keratinized gingiva 6 months postoperatively was 4.1±0.7 mm for FGG and 8±1.7 mm for CM. Periodontal parameters were not affected in the two groups. The CM group had a significantly lower pain, experienced less surgery time, and gained better aesthetics compared to the FGG group. Conclusion: CM appears to be a suitable substitute for FGG in procedures designed to increase keratinized tissue around teeth. It has remarkable benefits, such as acceptable keratinized tissue gain, less pain, less surgical chair time, and better aesthetics.
Asset Management and Capital Ownership on Firm Value: Through Profitability

This study aims to analyze the effect of Asset Management (AM) and Good Corporate Governance (GCG) on stock prices through Return on Investments (ROI). This research is an explanation using quantitative methods. The population of 64 companies is listed on the Indonesia Stock Exchange and is engaged in property and construction. The sampling technique uses purposive sampling with the results of 36 companies. The data used is the 2016-2018 financial statements. The analysis used is path analysis. The results of the study prove that Management asset significantly influences ROI, GCG significantly influences ROI, Management asset significantly influences stock prices, GCG has a significant effect on stock prices, ROI has a significant effect on stock prices, Management asset has a significant effect on stock prices through ROI, GCG has a significant effect on share price through ROI. DOI: https://doi.org/10.26905/afr.v3i1. 4296
Anti-infective efficacy of Psidium guajava L. leaves against certain pathogenic bacteria

Water extracts of Psidium guajava leaves prepared by three different extraction methods were compared with respect to their anti-infective activity against Pseudomonas aeruginosa and Staphylococcus aureus in the nematode host Caenorhabditis elegans. The water extract prepared by Microwave Assisted Extraction method was found to have better anti-infective activity, and its activity was further compared with hydroalcoholic extract prepared using the same extraction method against five different pathogenic bacteria. Both these extracts could attenuate virulence of P. aeruginosa, S. aureus, Serratia marcescens, and Chromobacterium violaceum, towards C. elegans. Anti-infective efficacy of P. guajava leaf extract seems partly to stem from its quorum-modulatory property, as it could modulate production of quorum sensing-regulated pigments in all the susceptible bacteria.
[Comparision of therapertic effect of different acupuncture methods for knee osteoarthritis].

OBJECTIVE To compare the clinical efficacy of acupuncture, electroacupuncture (EA) and moxibustion in the treatment of knee osteoarthritis (KOA). METHODS A total of eight-four patients with KOA were randomly and equally divided into acupuncture group, EA group and moxibustion group. Neixiyan (EX-LE40), Dubi (ST35), Heding (EX-LE2), Liangqiu (ST34), Xuehai (SP10), Zusanli (ST36) and Ashi-point on the affected side of the body were punctured with filiform needles or EA (2 Hz/100 Hz) for 30 min. In the moxibustion group, moxibustion was applied to the surrounding area of the affected joint for 60 min. The treatment was conducted once every other day for 4 weeks. The pain degree was assessed by using numerical rating scale (NRS) and the Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) scale (0－240 points) was used to evaluate the severity of KOA. The "Minimal Clinically Important Improvement (MCII)" was used to assess the therapeutic effect after the treatment. RESULTS After the treatment, the scores of NRS, and the pain, stiffness, motor function and total scores of WOMAC were significantly decreased in the three groups compared with their own pre-treatment (P<0.05), and were obviously lower in the EA and moxibustion groups than in the acupuncture group (P<0.05), and those of the moxibustion group was notably lower than those of the acupuncture group (P<0.05). Of the 28 cases in the acupuncture, EA and moxibustion groups, 11, 17 and 22 were effective, with the effective rate being 39.29%, 60.71% and 78.57%, respectively. The comprehensive therapeutic effect of the moxibustion group was significantly superior to that of the acupuncture and EA groups (P<0.05). CONCLUSION All the three different kinds of acupuncture and moxibustion methods have positively regulatory effect on KOA, and moxibustion is the best for reducing the joint pain and stiffness, and improving the motor function.
Clinical spectrum and histopathological analysis of cervical lymphadenopathy: a rural hospital study

One of the most common surgical problems faced in OPD is cervical neck swelling and of which a lymph node swelling presents as a clinical challenge because the cause can be due a simple inflammation (non-specific lymphadenitis), infections, tubercular or even malignancy, so such varied clinical spectrum presents as a diagnostic challenge. The prime function of lymph node is to deal with antigen, whether this be in the form of organisms or other particulate material, or even soluble antigen. Lymph nodes are strategically placed along the drainage of tissue and body fluids, they are most numerous in those areas which are in direct contact with the exterior of the individual.
Conservation biology applied to fish: The example of a project for rehabilitating the marble trout (Salmo marmoratus) in Slovenia

The conservation status of freshwater fish is of concern throughout the world, a third of all known species having become extinct or being endangered. Many of them have fragmented populations of small size whose future is in doubt. Conservation biology is the discipline that is used to study such populations, so that they can be managed in a way that will ensure their long-term survival. The history, development and future of conservation biology are described. Following repeated restocking of brown trout (Salmo trutta) dating from 1906, the marble trout (Salmo marmoratus) seems to have disappeared as a result of genetic pollution (hybridisation) from the lower reaches of the Soca River in Slovenia. A project for rehabilitating the marble trout has been undertaken and will serve as an example to illustrate an application of conservation biology to freshwater fish. A preliminary exploratory stage (1993-1995) that resulted in the publication in 1996 of an Action Plan, written in English and Slovenian, suggested that the cause of the disappearance of the marble trout was hybridisation, established the validity of the project in the region in question and provided us with essential information (occurrence of genetically pure populations) that could be used to define our future strategy. We chose genetic rehabilitation, i.e., the replacement of a population of introduced and introgressed fish by a population of genetically pure fish of the native species, rather than a programme of eradicating undesirable fish by chemical methods, which would have been incompatible with the region's context. Our overall strategy therefore had two main aims: to ensure the long-term survival of populations of pure marble trout (species conservation) and to rehabilitate the genes of marble trout in the hybridisation zone until foreign genes have almost been eliminated.
Market Structure and the Local Effects of Ethanol Expansion on Land Allocation: A Spatially Explicit Analysis

We investigate how the structures of local corn procurement markets shape the effect of expansion in ethanol production on corn planting decisions in surrounding areas. We first characterize competition intensity as a function of the spatial structure of plant capacities and then econometrically estimate the response in corn acreage to competition intensity at the grid&#8208;cell level. We use the estimated parameters to conduct factual and counterfactual experiments quantifying the effect of different sources of capacity expansion on competition intensity and, ultimately, spatial patterns of land cover. We find that an expansion of ethanol capacity of a given magnitude can have disparate effects on total land conversion to corn depending on its source, that is, whether it is due to plant entry, expansion of an incumbent plant, or the location where the expansion occurs. Expansions that increase competition intensity the most also trigger the most land conversion. This is because, as spatial competition for corn intensifies, plants are forced to procure more from the intensive margin, where additional corn can only be obtained from land conversion. We also find that competitive spillovers trigger land conversion in grid cells that are not within the procurement area of a new plant or of a plant that expands capacity. Our results underscore the importance of considering market structure when quantifying local land use changes associated with ethanol capacity expansion.
Effect of feeding hydroponics maize fodder replacing maize of concentrate mixture partially on digestibility of nutrients and milk production in lactating cows

An experiment was conducted to find out the effect of feeding hydroponics maize fodder by replacing maize of concentrate mixture partially on digestibility of nutrients and milk production in lactating cows. Lactating cows (6) (avg. BW 437 kg, avg. milk yield 8.57 kg) were divided into 2 equal groups i.e. Maize Grain Group (MGG) and Hydroponics Maize Fodder Group (HMFG) based on their body weight and milk yield. Two types of concentrate mixture (CMmaize 100 or CMmaize 50) were prepared. CMmaize 100 contained maize grain 35, rice polish 35, soybean meal 27, mineral mixture 2 and common salt 1 parts by weight. In CMmaize 50, 50% of the maize of CMmaize 100 was replaced partially and it contained maize grain 17.5, rice polish 54, soybean meal 25.5, mineral mixture 2 and common salt 1 parts by weight. Randomly, animals of MGG and HMFG were offered 6 kg CMmaize 100 and CMmaize 50, respectively along with 10 kg fresh conventional green fodder (napier bajra hybrid, CO-3) and ad lib. jowar straw. Besides, animals of the HMFG were offered five kg fresh HMF, sprouted from approximately one kg maize, which has been withdrawn from 6 kg concentrate mixture. The experiment was conducted for a period of 45 days. The fresh yield of the HMF from one kg maize seed was 5â€“6 kg with 12.39% DM content. Feeding of HMF by replacing the maize grain of the concentrate mixture had not altered the DM intake (11.20 vs 11.52 kg/day) and roughage: concentrate ratio (51:49 vs 52:48) of the animals. There was nonsignificant increase in the digestibility of nutrients, nutritive value, milk yield (7.97 vs 8.59 kg/day), 4.0% FCM (8.25 vs 9.31 kg/day), and fat (%) (4.20 vs 4.50) in HMFG than the MGG. The feed conversion ratio (FCR) in terms of DM (1.51 vs 1.40), CP (0.19 vs 0.18) and TDN (1.03 vs 0.96) was better in the HMFG than the MGG. It can be concluded that hydroponics maize fodder can be fed to the lactating cows by replacing maize of the concentrate mixture partially with improvement in the performance of the animals.
Modelling phosphate-based glasses for biomedical applications

In this thesis, we present the application of theoretical methodologies to model several compositions of phosphate-based glasses (PBGs) for biomedicine. Quantum mechanical calculations of single crystal phosphorus pentoxide, P2O5, have been conducted using plane wave density functional theory. A rigorous structural, mechanical and electronic characterization of the two most stable phases, o’(P2O5)∞ and o(P2O5), showed both to be highly elastically anisotropic due to structural features. Lӧwdin atomic charge and valence charge density analysis shows mixed ionic and covalent character in both phases. A formal charge, shell-model force field, has been parameterized to reproduce the structural and mechanical properties of o’(P2O5)∞. This has been used to conduct classical molecular dynamics simulations of amorphous P2O5-CaO-Na2O systems, via a melt-quench protocol. Dependent on composition, phosphorus atoms are primarily Q1 and Q2. Moreover, calcium ions coordinate to a significantly higher proportion of non-bonded oxygens than sodium. Born-Oppenheimer and classical molecular dynamics simulations of amorphous P2O5-CaO-Na2O-Ag2O systems reveal a distorted octahedral / trigonal bi-pyramidal coordination environment for silver. An increase in the phosphorus to bonded oxygen bond disorder, and disproportionation in the medium-range structure, following the relation 2 Q2 → Q1 + Q3, is evidenced upon Ag-doping. The influence of titanium on the structural, mechanical and electronic properties of PBG has been investigated via Born-Oppenheimer molecular dynamics and theoretical 31P chemical shieldings calculations. Upon Ti-doping, a depolymerization of the phosphate network is offset by the formation of P-O-Ti and Ti-O-Ti linkages. The reconstructed theoretical 31P NMR spectra compare well to experimental spectra, suggesting that the unimodal spectral peak comprises Q1 - 4 phosphorus. The bulk modulus rises from 38.96 GPa in PBG to 43.94 GPa for Ti-PBG, due to a more cross-linked glass network. Density of states calculations show a reduction in the band gap from ~3.3 eV to ~2.1 eV upon Ti-doping.