An Unusual Case of Tertiary Syphilis Behaving Like Tongue Squamous Cell Carcinoma.

Syphilis may present with a myriad of oral manifestations in the primary, secondary, and tertiary stages, and may be confused with malignancy. Despite a rise in the incidence of syphilis, tertiary syphilis is exceedingly rare. Tertiary syphilis gummas usually affect the hard palate, while tongue involvement is very rare. A 55-year-old male with extensive smoking and alcohol use was referred for malignancy evaluation with an ulcerative mass creating a tongue cleft, and a positron emission tomography scan suggestive for malignancy. Biopsy results demonstrated no carcinoma but histology demonstrated granulomatous inflammation. Further laboratory results demonstrated elevated rapid plasma reagin titers with Treponema pallidum immunoglobulin G antibodies present. The patient was diagnosed with tertiary syphilis, received appropriate antibiotic therapy, and had healing of the tongue with a persistent cleft. Syphilis may mimic many disease processes. As such, it is important to include this disease in the differential of an unusual tongue lesion. An oral lesion may be the first sign of infection

Genebank ‐ in vitro propagation of potato and sweetpotato. CIP‐SOP056 V 3.0

This procedure describes the in vitro multiplication of potato and sweetpotato germplasm for international and national germplasm distribution, as well as, in vitro conservation, phytosanitary, and cryopreservation activities

Synchronization of the Frenet-Serret linear system with a chaotic nonlinear system by feedback of states

A synchronization procedure of the generalized type in the sense of Rulkov et al [Phys. Rev. E 51, 980 (1995)] is used to impose a nonlinear Malasoma chaotic motion on the Frenet-Serret system of vectors in the differential geometry of space curves. This could have applications to the mesoscopic motion of biological filamentsComment: 12 pages, 7 figures, accepted at Int. J. Theor. Phy

Ecology and life history of penaeid shrimps

Extended abstract only.Fourteen species of penaeid shrimps with commercial value in Batan Bay and Tigbauan-Guimbal waters were identified as follows: Penaeus monodon, P. semisulcatus, P. japonicus, Metapenaeus ensis, M. burkenroadi, M. endeavouri, Metapenaeopsis palmensis, M. stridulans, Trachypenaeus fulvus, and Parapenaeus longipes. Among the 14 penaeids, P. semisulcatus, M. ensis and M. palmensis were found to be the dominant species within each genus. There are seven existing fishing gears for shrimping in the Batan Bay and Tigbauan-Guimbal waters: fish corrals, lift net, filter net, gill net, skimming net, baby trawler and commercial trawler. In general, female penaeids are larger than males. The largest P. monodon female measured was 81 mm in carapace length with 23 g in body weight. The largest male measuring 59 mm in carapace length with 119 g of body weight was caught in Batan Bay. Judging from spermatozoa occurrence on both sexes of P. monodon, the biological minimum size for male is 37 mm in carapace length and 49 mm for female. A total of 133 Penaeus postlarvae obtained from the offshore were identified by comparison with those reared in the laboratory. The postlarvae of P. japonicus-latisulcatus complex were quite dominant (60.2%), followed by P. semisulcatus (18.0%), and P. merguiensis-indicus complex (17.3%). The number of P. monodon postlarvae was relatively small (4.5%). The modal carapace length of P. monodon postlarvae from the offshore was 1.3 mm with three or four dorsal and no ventral spines on the rostrum, while P. monodon fry from the shoreline had 2.3 mm with five or six dorsal and one or two ventral spines

Efficient algorithms for robustness in resource allocation and scheduling problems

AbstractThe robustness function of an optimization (minimization) problem measures the maximum increase in the value of its optimal solution that can be produced by spending a given amount of resources increasing the values of the elements in its input. We present efficient algorithms for computing the robustness function of resource allocation and scheduling problems that can be modeled with partition and scheduling matroids. For the case of scheduling matroids, we give an O(m2n2) time algorithm for computing a complete description of the robustness function, where m is the number of elements in the matroid and n is its rank. For partition matroids, we give two algorithms: one that computes the complete robustness function in O(mlogm) time, and other that optimally evaluates the robustness function at only a specified point

Preparing Teacher Candidates with Pedagogical Approaches for ELLs in Hybrid/Virtual Learning Spaces

The purpose of this study is to empower preservice teachers (PSTs) to leverage relevant technology-based practices and be equipped with various tools and strategies appropriate for English Language Learners (ELLs) in PreK–12 grade settings. Now, more than ever, teacher candidates need to be prepared to understand the challenges faced by ELLs and provide various pedagogies for online platforms. This qualitative investigation explored 57 educators’ perspectives from PreK–12 schools, districts, and preparation programs in higher education in an effort to obtain relevant approaches in technology strategies and pedagogical frameworks that support ELLs’ remote learning. The study also draws on the knowledge needed to implement Social and Emotional Learning. Based on the findings, the study revealed (a) there are gaps between what teachers gain from the districts and what they have previously learned from their teacher preparation programs; (b) some teachers were not completely aware of the Social and Emotional Learning approach; (c) participants identified three pedagogical frameworks as most commonly used and they interchangeably used frameworks, programs, some online platforms, and resources in one section; and (d) educators’ insights highlighted what teachers should take into consideration (e.g., scaffolding/differentiated strategies) when planning, creating, and delivering instruction for ELLs in an online platform. Overall, participants emphasized the much-needed dedication to explore technology tools for various pedagogical approaches in hybrid/virtual learning spaces

Empirical evidence on the relationships between concentration and profitability in Latin American banking

There has been growth in globalization as a result of increased liberalization. This has also resulted in an increase in the role of financial institutions, such as banks. It is the purpose of this study to test Classen’s (2001) hypothesis that increase foreign bank presence has positive welfare implications and that the functioning of national banking markets are improved as a result. Using financial data for 2003 this paper will examine the influence of foreign bank entry on Latin American domestic markets.Latin American banking; Concentration and Profitability; Foreign Bank Influence

Toxicity of Pyrolysis Gases from Elastomers

The toxicity of the pyrolysis gases from six elastomers was investigated. The elastomers were polyisoprene (natural rubber), styrene-butadiene rubber (SBR), ethylene propylene diene terpolymer (EPDM), acrylonitrile rubber, chlorosulfonated polyethylene rubber, and polychloroprene. The rising temperature and fixed temperature programs produced exactly the same rank order of materials based on time to death. Acryltonitrile rubber exhibited the greatest toxicity under these test conditions; carbon monoxide was not found in sufficient concentrations to be the primary cause of death

Charge reversal of colloidal particles

A theory is presented for the effective charge of colloidal particles in suspensions containing multivalent counterions. It is shown that if colloids are sufficiently strongly charged, the number of condensed multivalent counterion can exceed the bare colloidal charge leading to charge reversal. Charge renormalization in suspensions with multivalent counterions depends on a subtle interplay between the solvation energies of the multivalent counterions in the bulk and near the colloidal surface. We find that the effective charge is {\it not} a monotonically decreasing function of the multivalent salt concentration. Furthermore, contrary to the previous theories, it is found that except at very low concentrations, monovalent salt hinders the charge reversal. This conclusion is in agreement with the recent experiments and simulations