Analyses of elemental abundances by secondary ion mass spectrometry (SIMS) require matrix-matched standard samples to account for the matrix effect on correction factors. This requirement makes it difficult obtain accurate results geological variable chemistry. In this study, we prepared 39 volcanic glasses foiditic, basaltic, basaltic andesitic, rhyolitic and pure SiO2 compositions, including ...

Sims Speculum Examination is an important skill for medical students and doctors. This article presents a comprehensive, concise and evidence-based approach to the use of the Sims Speculum which is consistent with The Principles of Clinical Examination [1]. We describe the signs of pelvic organ prolapse and based on a review of the literature, the precision and accuracy of these signs is discus...

A base and strong generating set provides an effective computer representation for a permutation group. This representation helps us to calculate the group order, list the group elements, generate random elements, test for group membership and store group elements efficiently. Knowledge of a base and strong generating set essentially reduces these tasks to the calculation of certain orbits. Giv...

‎In this paper we study codes $C_p(overline{{rm HiS}})$ where $p =3,7‎, ‎11$ defined by the 3‎- ‎7‎- ‎and 11-modular representations of the simple sporadic group ${rm HS}$ of Higman and Sims of degree 100‎. ‎With exception of $p=11$ the codes are those defined by the row span of the adjacency matrix of the complement of the Higman-Sims graph over $GF(3)$ and $GF(7).$ We show that these codes ha...

Previous secondary ion mass spectr.ometry (SIMS) studies of extended impact features from LDEF capture cell experiment AO187-2 showed that it is possible to distinguish natural and manmade particle impacts based on the chemical composition of projectile residues. The same measurement technique has now been applied to specially prepared gold target impacts from experiment AO187-1 in order to ide...

A novel sample-pretreatment method for time-of-flight secondary ion mass spectrometry (TOF-SIMS) was developed using supercritical fluid extraction (SFE). In SFE, the extraction efficiency of a certain organic matter is controlled by the pressure and temperature of supercritical CO2. Two-step SFE (1st step at 10 Mpa, 40 degrees C; 2nd step at 30 MPa, 120 degrees C) was applied to diesel exhaust...

Secondary ion mass spectrometry (SIMS) and confocal Raman microscopy (CRM) are combined to analyze the chemical composition of cultured Pseudomonas aeruginosa biofilms, providing complementary chemical information for multiple analytes within the sample. Precise spatial correlation between SIMS and CRM images is achieved by applying a chemical microdroplet array to the sample surface which is u...

In this review, we discuss the use of time-of-flight secondary-ion mass spectrometry (TOF-SIMS) technology for analyzing viscous glue (is called aggregate droplets) spider orb webs and examine results obtained. Element distribution images droplets were observed by TOF-SIMS. A uniform element is seen suspended pristine droplets, a differential spreading components attached droplets. We also TOF-...

In this review, we discuss the use of time–of–flight secondary–ion mass spectrometry (TOF–SIMS) technology for analyzing viscous glue (is called aggregate droplets) spider orb webs and examine results obtained. Element distribution images droplets were observed by TOF–SIMS. A uniform element is seen suspended pristine droplets, a differential spreading components attached droplets. We also TOF–...

I knew something was up when I saw my daughter shouting at our computer , scolding one of her Sims—a simulated male who kept making a mess of his house. To undo the damage , my exasperated daughter had to give him specific and detailed cleaning instructions. Just like a guy! Yet hers must have been the sort of reaction Will Wright dreamt of when he first settled on the concept of The Sims sever...