Abstract Monolayer WTe 2 stripes are quantum spin Hall (QSH) insulators. Density functional theory was used for investigating the electronic properties of and steps in bilayer Td -WTe . For oriented along dimer chains W atoms ( x direction), hybridization between two layers suppresses QSH states. However, nature can be recovered by forming a step, depending on atomic structure step. Conversely,...

DOI: 10.1002/sscp.202200019 The cover picture shows that the lead ion (Pb2+) and copper (Cu2+) in lake water are detected by UV-Vis analysis using gold nanoparticles (Au NPs) as colorimetric probe. formation of Pb-O bond between Pb2+ L-Cysteine can induce significant aggregation Au NPs (blue color), conversely, Cu catalyze oxidation Cysteine prevent (pink color). By analyzing absorption spectra...

The coexistence of neutron-neutron (n-n), proton-proton (p-p), and neutron-proton (n-p) pairings is investigated by adopting an effective density-dependent contact pairing potential. These three types can coexist only if the n-p stronger than n-n p-p for isospin asymmetric nuclear matter. In addition, existence pairs might enhance in matter when strength significantly ones. Conversely, reduced ...

Abstract Kristiansen and Murwanashyaka recently proved that Robinson arithmetic, Q, is interpretable in an elementary theory of full binary trees, T. We prove that, conversely, T Q by producing a formal interpretation concatenation QT + , thereby also establishing mutual interpretability with several well-known weak essentially undecidable theories numbers, strings, sets. introduce “hybrid” str...

Global higher education institutions are significantly impacted by a key component of chaos during challenging times: the ability to effectively respond ambiguity and uncertainty. Today’s COVID-19 global pandemic created challenge so quickly that leaders had little opportunity assess, evaluate make informed judgments. The dynamics situation presented more complexities than ever previously faced...

Cliff collapse Tall ice cliffs at the edges of sheets can under their own weight in spectacular fashion, a process that considerably hasten sheet mass loss. Bassis et al. used dynamic model to demonstrate this kind be slowed either by upstream thinning or resistive forces from sea and calved debris (see Perspective Golledge Lowry). Conversely, when there is thickening, transition catastrophic o...

We study how 3,534 beneficiaries of PROSPERA, Mexico's cash transfer program, smooth food consumption around the payday, an anticipated and transitory income shock. find that security do not change including for recipients with impatient or time-inconsistent preferences households higher than median dependence. Conversely, health employment shocks (unexpected less changes) reduce security. The ...

We report an element- and time-resolved investigation of femtosecond laser induced ultrafast dynamics the Co 3d Dy 4f spins in a ferrimagnetic Co80Dy20 alloy as function temperature. observe that characteristic demagnetization time (τCo) remains nearly constant (~0.2 ps) on increasing Conversely, (τDy) decreases from ~1 ps to ~0.4 with rise Comparing our experimental data literature shows τCo τ...

In this paper, we discuss several relations between the existence of invariant volume forms for Hamiltonian systems on Poisson-Lie groups and unimodularity structure. particular, prove that vector fields a Lie group endowed with unimodular structure preserve multiple any left-invariant group. Conversely, also if there exists function such identity element is nondegenerate singularity associated...

A graph G=(V,E) is monopolar if V can be partitioned into a stable set and inducing the union of vertex-disjoint cliques. Motivated by an application clique partitioning problem on graphs to cosmetic manufacturing, we study complexity computing classical parameters class graphs. We show that partitioning, stability chromatic numbers NP-hard. Conversely, prove every has polynomial number maximal...