2B

BackgroundThis study aimed to further complete normative data sets for the strength profile of the thigh in soccer players by performing isometric and isokinetic measurements in a large sample per player position.MethodsIn total, 364 soccer players were divided into subgroups according to their pitch position. All players performed isometric and isokinetic strength measurements during active competition period using an isokinetic dynamometer (System 3, Biodex®, ENRAF-NONIUS, New York, USA).ResultsIsokinetic strength of m. Quadriceps was significantly (p = 0.023) higher in strikers compared to central midfielders in both the dominant (+ 9%) and the non-dominant (+ 4%) leg. No further differences were found in isometric or isokinetic strength per playing positions.ConclusionsWe have shown that strength profiles do not differ between playing positions on the field. This is valuable information for elite soccer high performance coaches and medical staffs aiming to improve daily training efficiency and rehabilitation of their players.

Abstract A woody alien species, Carya illinoinensis (Juglandaceae), is found in Rome (central Italy) along banks of river Tevere. The discovery represents the first record for Italy and the second one for the continental Europe. Description, distribution in Italy, phenology, and original photographs are provided. Moreover, the name Juglans illinoinensis (basionym of C. illinoinensis) is lectotypified on a Wangenheim's illustration (Table XVIII, Figure XXXXIII).

We study the existence of solutions to nonlinear boundary value problems for second order quasilinear ordinary differential equations involving bounded ϕ-Laplacian, subject to integral boundary conditions formulated in terms of Riemann-Stieltjes integrals.

We discuss a no-go theorem for the novel Ricci-inverse theory of gravity. Referring to a static spherically symmetric matter distribution embedded in a de Sitter cosmology, we prove that it is impossible to have a stable Sub-Horizon non-relativistic Weak-Field limit in any model proposed in previous works to avoid some cosmological and inflationary instabilities. We discuss possible ways to circumvent the issue, and point out a machinery to build new stable models under Sub-Horizon non-relativistic Weak-Field limit. Such models exhibit full consistency with predictions of General Relativity on small scales.

SPIN:

Biomolecular processes occurring within a physiological buffer induce changes in the dielectric permittivity of the solution at terahertz frequencies (0.1–10 THz). Therefore novel high sensitivity THz sensors could potentially satisfy the need for a label‐free, immobilisation‐free, real‐time and in‐solution biosensor technology. However, the application is hindered by insufficient performance of current measurement techniques resulting in low sensitivity, low resolution, high detection limit and excessive sample volume. This work presents an integrated THz sensor topology designed to overcome the aforementioned challenges, performance evaluation with a number of typical biomolecule processes, and analysis of possible applications. The state‐of‐the‐art performance is demonstrated with room‐temperature operated solid‐state active components operating at f ≃ 0.25 THz: the sample volume is V = 4 nl, detection limit is DL <9 mg/l, sensitivity to biomolecule concentration, conformation and binding. The technology could become a versatile tool for hydration shell study, protein conformation and function analysis, concentration measurements including nucleic acid amplification by polymerase chain reaction, protein and nucleic acid binding assay.