Results 31 to 40 of about 7,544,458 (289)

Average value of the divisor class numbers of real cubic function fields

open access: yesOpen Mathematics, 2023
We compute an asymptotic formula for the divisor class numbers of real cubic function fields Km=k(m3){K}_{m}=k\left(\sqrt[3]{m}), where Fq{{\mathbb{F}}}_{q} is a finite field with qq elements, q≡1(mod3)q\equiv 1\hspace{0.3em}\left(\mathrm{mod}\hspace{0 ...
Lee Yoonjin, Lee Jungyun, Yoo Jinjoo
doaj   +1 more source

Data-Limited Stock Assessment for Fish Species Devoid of Catch Statistics: Case Studies for Pampus argenteus and Setipinna taty in the Bohai and Yellow Seas

open access: yesFrontiers in Marine Science, 2021
For many fish stocks, such as Pampus argenteus and Setipinna taty in China, size composition data are more accessible than catch data. Varied results can arise when different length-based stock assessment models are applied to these data, and fishery ...
Qingpeng Han   +12 more
doaj   +1 more source

Boundary Liouville Field Theory: Boundary Three Point Function

open access: yes, 2002
Liouville field theory is considered on domains with conformally invariant boundary conditions. We present an explicit expression for the three point function of boundary fields in terms of the fusion coefficients which determine the monodromy properties
B. Ponsot   +20 more
core   +1 more source

Heisenberg-picture approach to the evolution of the scalar fields in an expanding universe [PDF]

open access: yes, 1997
We present the Heisenberg-picture approach to the quantum evolution of the scalar fields in an expanding FRW universe which incorporates relatively simply the initial quantum conditions such as the vacuum state, the thermal equilibrium state, and the ...
A. J. Niemi   +16 more
core   +2 more sources

Influence of biochar on the remediation of cadmium-contaminated soil in an Eisenia fetida–Solanum nigrum system

open access: yesEnvironmental Chemistry and Ecotoxicology
Biochar, plants, and earthworms have good remediation effects on cadmium (Cd)-contaminated soils. However, few studies have combined all three technologies to explore the treatment of Cd-contaminated soils.
QingRui Luo   +6 more
doaj   +1 more source

Attraction between like-poles of two magnets mediated by a soft ferromagnetic material [PDF]

open access: yesRevista Brasileira de Ensino de Física
We present an engaging educational demonstration designed to captivate students’ attention. The experiment reveals an intriguing phenomenon – a surprising attraction between two magnets with identical poles facing each other when a steel metal sphere is ...
Tarcísio N. Teles   +2 more
doaj   +1 more source

How nutrients and antibiotics shape microbial network patterns: Comparative insights from Erhai Lake bays

open access: yesEcotoxicology and Environmental Safety
Freshwater lakes are increasingly subject to simultaneous nutrient enrichment and antibiotic pollution, yet the joint effects of these stressors on microbial network structure remain poorly characterized.
M.D.K. Lakmali Gunathilaka   +6 more
doaj   +1 more source

Quantization of the Riemann Zeta-Function and Cosmology [PDF]

open access: yes, 2007
Quantization of the Riemann zeta-function is proposed. We treat the Riemann zeta-function as a symbol of a pseudodifferential operator and study the corresponding classical and quantum field theories.
Barnaby N.   +18 more
core   +2 more sources

Adherence to Protocol Recommendations for Children With Wilms Tumour in Two Consecutive Studies in the United Kingdom and Ireland—Does Variation Matter?

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background and Aims Wilms tumour (WT) has excellent event‐free and overall survival (OS). However, small differences exist between countries participating in the same international study. This led us to examine variation in adherence to protocol recommendations as a potential contributing factor.
Suzanne Tugnait   +23 more
wiley   +1 more source

Soil nutrients and heavy metals jointly shape spontaneous plant functional groups in abandoned mining areas

open access: yesPlant Diversity
Ecological recovery of abandoned mining areas requires developing and implementing effective nature-based solutions. However, ecological processes that underlie the establishment, development, and long-term persistence of plant functional groups within ...
Xin-qi Yuan   +6 more
doaj   +1 more source

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