7026 research outputs found
Sort by
Application of Chitosan and Its Derivatives as Bioflocculants for Iron and Turbidity Removal from Filter Backwash Water
Get PDFLiterary portraits of Nicolaus Copernicus for the young
Get PDFThe Year of Nicolaus Copernicus provides an excellent opportunity to reach out not only to contemporary, but also to slightly older and forgotten works intended for young readers that introduce the figure of the famous astronomer. Reading these
works is an interesting form of journey through Copernicus’ biography, Polish and European history, and history of literature
Mycogenic Copper Oxide Nanoparticles For Fungal Infection Management in Agricultural Crop Plants
Get PDFAspergillus infections are one of the significant threats to crop plants such as peanuts, cottonseed, maize, tree nuts, food, and feed. The fungal members of this genus can cause up to 100% losses in fruit plants under favorable conditions. It is thus a necessity to control these phytopathogenic fungi by a renewable, non-hazardous technology. Phoma spp. are well known to synthesize antifungal metabolites like 4,8-dihydroxy-6-methoxy-3-methyl-3,4-dihydro-1H-isochromen-1-one, Viridicatol, tenuazonic acid, alternariol, alternariol monomethyl ether, phomafungin, etc. In the present work, copper oxide nanoparticles (CuONPs) were synthesized using an aqueous extract of Phoma glomerata (MTCC-2210). They were assessed for in vitro antifungal activity against Aspergillus flavus and Aspergillus niger. CuONPs showed absorption maxima at 630 nm and an average size of 119.6 nm, which were stable at a zeta potential of -23.5 mV, forming the face-centered cubic (FCC) shaped crystalline structure as elucidated by XRD. FTIR confirmed the presence of various secondary metabolites from fungal extracts in the NPs capping. Kirby-Bauer disc diffusion assay indicated the antifungal activity with an average zone of inhibition of 19 +3 mm and 23 +4 mm diameter for A. niger and A. flavus, respectively. The serial dilution method
2
showed the MIC of 180 and 220 μg/ml against A. niger and A. flavus, respectively. MIC values were significantly compared to standard fungicide mancozeb. Green synthesized CuONPs using Phoma extract indicated significant fungicidal activity against test pathogens and paved their way to be applied in the agriculture fields for crop applications as a novel substitute to chemical fungicides
On the enumeration of finite L-algebras
Get PDFWe use Constraint Satisfaction Methods to construct and enumerate finite L-algebras up to isomorphism. These objects were recently introduced by Rump and appear in Garside theory, algebraic logic, and the study of the combinatorial Yang–Baxter equation. There are 377,322,225 isomorphism classes of L-algebras of size eight. The database constructed suggests the existence of bijections between certain classes of L-algebras and well-known combinatorial objects. We prove that Bell numbers enumerate isomorphism classes of finite linear L-algebras. We also prove that finite regular L-algebras are in bijective correspondence with infinite-dimensional Young diagrams.National Science Center (Poland), grant number 2020/39/B/HS1/0021
Nie pozostaje nam nic innego, jak Ją naśladować. Różaniec z błogosławioną Marią Karłowską, 26 s.
No full textRóżaniec, którego rozważania zostały oparte o zapiski bł. Marii Karłowskiej
Magnetism and quantum melting in moiré-material Wigner crystals
Get PDFThe authors acknowledge the Texas Advanced Computing Center (TACC) at The University of Texas at Austin
for providing high-performance computer resources.Recent experiments have established that semiconductor-based moiré materials can host incompressible states at a series of fractional moiré-miniband fillings. These states have been identified as generalized Wigner crystals in which electrons localize on a subset of the available triangular-lattice moiré superlattice sites. In this article, we use momentum-space exact diagonalization to investigate the many-body ground-state evolution at rational fillings from the weak-hopping classical-lattice gas limit, in which only spin degrees-of-freedom are active at low energies, to the strong-hopping metallic regime where the Wigner crystals melt. We specifically address the nature of the magnetic ground states of the generalized Wigner crystals at fillings ������=1/3 and ������=2/3.Polish National Science Centre
based, U.S. Department of Energy, Office of Science,
Basic Energy Sciences
Tourism De-Metropolisation but Not De-Concentration: COVID-19 and World Destinations
Get PDFThe current COVID-19 pandemic has caused a significant decline in human mobility during the past three years. This may lead to reconfiguring future tourism flows and resulting transformations in the geographic patterns of economic activities and transportation needs. This study empirically addresses the changes in tourism mobility caused by the pandemic. It focuses on the yet unexplored effects of the destination type on tourism volume change. To investigate this, 1426 metropolitan, urban/resort and dispersed destinations were delimited based on Airbnb offers. Airbnb reviews were used as the proxy for the changes in tourist visits in 2019–2022. Linear mixed-effects models were employed to verify two hypotheses on the differences between the effects of the pandemic on three kinds of tourism destinations. The results confirm the tourism de-metropolisation hypothesis: metropolitan destinations have experienced between −12.4% and −7.5% additional decreases in tourism visits compared to secondary cities and resorts. The second de-concentration hypothesis that urban/resort destinations are more affected than dispersed tourism destinations is not supported. The results also confirm that stricter restrictions and destination dependence on international tourism have negatively affected their visitation. The study sheds light on post-pandemic scenarios on tourism mobility transformations in various geographic locations
Libertarianism, Defense of Property, and Absolute Rights
Get PDFThis research was funded in whole or in part by the National Science Center, Poland,
grant number 2020/39/B/HS5/00610. For the purpose of Open Access, the author has
applied a CC-BY public copyright license to any Author Accepted Manuscript (AAM)
version arising from this submissionThe present paper argues that libertarians (e.g. Murray Rothbard, Stephan Kinsella)
who subscribe to the proportionality principle while embracing the view that
to have a right to property is to have a right to defend it run into what we call the Property Defense Dilemma. For if the only way to defend property is to defend
it disproportionately, then a private property right – contrary to what these think-
ers claim – is not accompanied by a right to defend it. The most plausible way
out of the dilemma – the present paper argues – is to conceive of private property
rights as only weakly absolute, to use Matthew H. Kramer’s illuminating distinc-
tion. On the other hand, libertarians who, like Walter Block, would like to escape
the dilemma by replacing the proportionality standard with the gentleness principle
run into other sorts of problems (moral implausibility, incoherence), which also
shows that it is the libertarian view on rights as infinitely stringent side constraints
that calls for revision and attenuation.Narodowe Centrum Nauki
This research was funded in whole or in part by the National Science Center, Poland,
grant number 2020/39/B/HS5/00610. For the purpose of Open Access, the author has
applied a CC-BY public copyright license to any Author Accepted Manuscript (AAM)
version arising from this submissio
Application of kinesitherapy within the process of rehabilitation of patients with Charcot-Marie-Tooth nerval amyotrophia
Get PDFThis study was approved by Institute Ethics Committee, National University Yuri Kondratyuk Poltava Polytechnic, Poltava, Ukraine (Ref: NUYKPP/ IEC/2022/123). We adhered to the principles of ethics thereafter throughout the study.Introduction and aim. Researching inherited polyneuropathy is vastly topical in the course of the contemporary practice of physical therapy and ergotherapy. The article unveils the results of the application of kinesitherapy in the process of rehabilita- tion of patients with Charcot-Marie-Tooth nerval amyotrophia. Inherited Charcot-Marie-Tooth neuropathy is a genetical disease, which is manifested with the slow reduction of the size of muscles of limbs and weakening of distal locations, is the most wide- spread clinical form of inherited polyneuropathies, which affect people regardless of generational and gender-based; mostly young and workable people become the objects suffering from its impact.
Description of the case. Due to the relatively low frequency of the multiplication of the disease within the population (accord- ing to the data from clinical statistics, the prevalence of all types of Charcot-Marie-Tooth amyotrophia per 100 thousand peo- ple is approximately 36 cases) four patients with Charcot-Marie-Tooth nerval amyotrophia aged in the area from 14 to 20 years took part in the research. In the course of the research, we applied the method of electroneuromyography, which provided the opportunity of detecting the rate of impulse impact via afferent and efferent ways, the duration of M-response and the num- ber of movable entities within lower limbs.
Conclusion. As a result of classes being held and carried out according to the experimental kinesitherapy study program, there was the detection of positive tendencies of changing the psychophysical state of patients, diagnosed with “Charcot-
-Marie-Tooth nerval amyotrophia”