The existence of a highly ordered, two-dimensional, Sn/Ag alloy on Si(111) is reported in this study. We present detailed atomic and electronic structures of the one atomic layer thick alloy, exhibiting a 2 × 2 periodicity. The electronic structure is metallic due to a free-electron-like surface band dispersing across the Fermi level. By electron doping, the electronic structure can be converte...

We report a combined experimental and theoretical study on the formation of dumbbell silicene structures Ag(110). High-resolution scanning tunneling microscopy (STM) reveals rich tapestry adatom-free -decorated bidimensional phases covering whole Ag(110) surface. The most thermodynamically stable models obtained from density-functional theory (DFT) perfectly reproduce all features observed by S...

This work describes the adsorption of pyrene molecules on a Ag(111) surface. We first demonstrate that despite its high vapor pressure, can form ordered films under ultrahigh vacuum conditions, presenting well-contrasted diffraction pattern. Studies using high-resolution electron energy loss spectroscopy and ultraviolet photoelectron provide compelling evidence physisorbed system where only wea...

Background. Intravenous aminoglycoside (AG) dosing is complex and highly individualized based on indication, patient’s age, and renal function. Protocols available at study site guide dosing of AGs. This study assesses adherence to current protocols and investigates efforts needed to optimize AG dosing. Methods. 100 consecutive patients who received AG (gentamicin, tobramycin, or amikacin) from...

We discuss about the generalized $F$-contraction mappings in partially ordered metric spaces. For this, we first introduce the notion of ordered weakly $F$-contraction mapping. We also present some fixed point results about this type of mapping in partially ordered metric spaces. Next, we introduce the notion of $acute{mathrm{C}}$iri$acute{mathrm{c}}$ type generalized ordered weakly $F$-contrac...

in this paper, we introduce the concept of semihyperring $(r,+,cdot)$ together with a suitable partial order $le$. moreover, we introduce and study hyperideals in ordered semihyperrings. simple ordered semihyperrings are defined and its characterizations are obtained. finally, we study some properties of quasi-simple and $b$-simple ordered semihyperrings.

Stable and metastable metallic nanoparticles exhibit unique properties compared to the bulk, with potentially important applications for catalysis. This is in particular case AgPt alloy that can ordered L1$_1$ structure (alternation of pure Ag Pt (111) planes) nanometer size particles. However, such small systems, interfaces play an role. Therefore, support used elaborate ultrahigh vacuum exper...

In this paper, the concept of fuzzy convex subgroup (resp. fuzzy convex lattice-ordered subgroup) of an ordered group (resp. lattice-ordered group) is introduced and some properties, characterizations and related results are given. Also, the fuzzy convex subgroup (resp. fuzzy convex lattice-ordered subgroup) generated by a fuzzy subgroup (resp. fuzzy subsemigroup) is characterized. Furthermore,...