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• 1
Article
Language: English
In: The journal of physical chemistry. A, 10 November 2011, Vol.115(44), pp.12373-9
Description: The standard agent glucose has been the subject of numerous experimental and theoretical studies, especially in the aqueous environments which are present in most biochemical processes. The impact of the solvation process on the vibrational spectra of glucose in the mid-infrared region is investigated in this work. The computational study focused both on the variation of the number of surrounding water molecules from 0 to 229 and on the number of single spectra included in the iterative averaging process. The calculations consisted of a combination of force field methods for the sampling of the configuration space and density functional theory for further geometry optimizations. Effective fragment potentials (EFPs) were employed for the description of the solvent as a compromise between accuracy and computational complexity. A correlation between the experimental data and the number of surrounding water molecules could not be observed for an averaging over a small set of computed single spectra. The inclusion of an additionial polarizable continuum model (PCM) also showed no further impact. However, an increase in the number of underlying single spectra in the averaging process increased the correlation between simulations and the experiment substantially. Especially for 18 explicit EFP water molecules, an inclusion of 80 single spectra delivered a Pearson's correlation coefficient r ≈ 0.94.
Keywords: Spectrophotometry, Infrared ; Glucose -- Chemistry ; Water -- Chemistry
ISSN: 10895639
E-ISSN: 1520-5215
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• 2
Article
Language: English
In: Cancer, 01 February 2011, Vol.117(3), pp.581-9
Description: Primary cardiac lymphoma (PCL) represents a rare subset of non-Hodgkin lymphoma, characterized by poor outcomes. The authors aimed to construct a framework of known clinical presentations, diagnostic features, disease complications, treatment, and outcomes to improve prognostication. Individual patient data were obtained from defined cases of PCL (1949-2009) and systematically analyzed. The authors report results of a review of 197 cases of PCL, with half of all cases reported since 1995. Survival was affected by 4 factors: immune status, left ventricular involvement, presence of extra-cardiac disease, and arrhythmia. Median overall survival (OS) for immunocompromised and immunocompetent was 3.5 months (m) and not reached, respectively (HR 0.29, 95% CI, 0.13-0.68; P = .004). LV involvement was uncommon (26%) and associated with an OS of only 1 m, whereas patients free of LV involvement had a median OS of 22 m (HR 0.28, 95% CI, 0.12-0.64; P = .002). Patients with extracardiac disease had shorter median OS compared with those without (6 m vs 22 m, HR 0.49, 95% CI, 0.26-0.91; P = .02). Those patients with an arrhythmia of any type had a median OS that was not reached (n = 55), whereas those without rhythm disturbances (n = 41) had median OS of 6 m (HR 0.51, 95% CI, 0.29-0.91; P = .024). Overall response rate to therapy was 84%, with long-term OS over 40%. The current study presents the largest analysis of PCL to date. The data demonstrate that PCL is now more frequently diagnosed premortem and appears to have reasonable response rates. Lack of LV involvement and the presence of arrhythmias are associated with improved survival.
Keywords: Heart Neoplasms -- Diagnosis ; Lymphoma, Non-Hodgkin -- Diagnosis
ISSN: 0008-543X
E-ISSN: 10970142
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• 3
Article
Language: English
In: General Hospital Psychiatry, Sept-Oct, 2013, Vol.35(5), p.576.e9-576.e10
Description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.genhosppsych.2012.12.006 Byline: Christine E. Petrich, Melissa P. Bui, Helen M. Farrell Keywords: Graves' disease; Hyperthyroidism; Suicide Abstract: Hyperthyroidism has profound effects on mental health. The literature is sparse, however, with regard to suicide attempts related to untreated hyperthyroidism. This case report illustrates the presentation of a patient in the intensive care unit after a life-threatening Tylenol overdose presumed to be secondary to adjustment disorder. During the patient's hospitalization, she experienced anxiety, heart palpitations, tachycardia and diaphoresis. The psychiatric consultant, endocrinology consultant and inpatient psychiatry teams helped to diagnose Graves' disease, significantly changing her treatment and trajectory. Article History: Received 26 October 2012; Revised 17 December 2012; Accepted 19 December 2012
Keywords: Hyperthyroidism ; Suicidal Behavior
ISSN: 0163-8343
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• 4
Article
Language: English
In: Semigroup Forum, 2011, Vol.83(3), pp.412-446
Description: Let S be a semigroup and s , t ∈ S . We say that t is an associate of s if s = sts . If S has a maximal subgroup G such that every element s of S has a unique associate in G , say s ∗ , we say that G is an associate subgroup of S and consider the mapping s → s ∗ as a unary operation on  S . In this way, semigroups with an associate subgroup may be identified with unary semigroups satisfying three simple axioms. Among them, only those satisfying the identity ( st ) ∗ = t ∗ s ∗ , called medial, have a structure theorem, due to Blyth and Martins. We introduce several relations germane to the presence of this unary operation. Next we characterize medial, orthodox, cryptic and medial, and cryptic and orthodox semigroups with an associate subgroup in terms of a construction and several choices of a basis of their identities. In addition, we characterize medial monoids and discuss -inverse semigroups in terms of a construction and bases for their systems of identities. We establish an isomorphism between the lattice of varieties of cryptic medial monoids and the direct product of the lattice of band monoids and the lattice of group varieties. An embedding into idempotent generated semigroups is proved as well.
Keywords: Semigroup ; Associate subgroup ; Unary semigroup ; Axiom ; Regular ; Orthodox ; Inverse ; Cryptic ; Overabelian ; Semidirect product ; Direct product ; Variety ; Embedding
ISSN: 0037-1912
E-ISSN: 1432-2137
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• 5
Article
Language: English
In: Czechoslovak Mathematical Journal, 2013, Vol.63(2), pp.289-305
Description: Let S be a semigroup. For a, x ∈ S such that a = axa , we say that x is an associate of a . A subgroup G of S which contains exactly one associate of each element of S is called an associate subgroup of S . It induces a unary operation in an obvious way, and we speak of a unary semigroup satisfying three simple axioms. A normal cryptogroup is a completely regular semigroup whose -relation is a congruence and is a normal band. Using the representation of as a strong semilattice of Rees matrix semigroups, in a previous communication we characterized those that have an associate subgroup. In this paper, we use that result to find three more representations of this semigroup. The main one has a form akin to the one of semigroups in which the identity element of the associate subgroup is medial.
Keywords: semigroup ; normal cryptogroup ; associate subgroup ; representation ; strong semilattice of semigroups ; Rees matrix semigroup
ISSN: 0011-4642
E-ISSN: 1572-9141
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• 6
Article
Language: English
In: Results in Mathematics, 2012, Vol.61(1), pp.75-96
Description: A semigroup S is an order in a semigroup Q if every element of Q is of the form q  =  a −1 b  =  cd −1 for some $${a,b,c,d\in S}$$ , where a −1 and d −1 are inverses within group $${{\mathcal H}}$$ -classes of Q . We study orders in normal cryptogroups based on considering the restrictions of Green’s relations of Q to S . This produces certain relations which help us to gain an overview of all normal cryptogroups Q in which S is an order. Distinguished orders play an important role in this context.
Keywords: 20M10
ISSN: 1422-6383
E-ISSN: 1420-9012
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• 7
Article
Language: English
In: Results in Mathematics, June, 2013, Vol.63(3-4), p.1033(24)
Description: Byline: Mario Petrich (1) Keywords: Primary 20M10; Semigroup of left quotients; left order; Green's relations; Completely 0-simple semigroup; S-homomorphism; semigroup without contractions; 〈![CDATA[$${\mathcal{R}}$$]]〉 -unipotent; Brandt semigroup Abstract: A subsemigroup S of a semigroup Q is a left order in Q, and Q is a semigroup of left quotients of S, if every element of Q can be written as a .sup.-1 b for some a, b[member of] S with a belonging to a group H -class of Q. Characterizations are provided for semigroups which are left orders in completely 0-simple semigroups in the following classes: without similar L -classes, without contractions, R -unipotent, Brandt semigroups and their generalization. Complete discussion of two examples and an idea for a new concept conclude the paper. Author Affiliation: (1) 21420 Bol, Brac, Croatia Article History: Registration Date: 05/04/2012 Received Date: 13/05/2011 Accepted Date: 15/12/2011 Online Date: 01/07/2012
Keywords: Primary 20M10;
ISSN: 1422-6383
E-ISSN: 14209012
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• 8
Article
Language: English
In: Semigroup Forum, 2011, Vol.83(2), pp.161-189
Description: Let $\mathcal{U}$ be the class of all unipotent monoids and $\mathcal{B}$ the variety of all bands. We characterize the Malcev product $\mathcal{U} \circ \mathcal{V}$ where $\mathcal{V}$ is a subvariety of $\mathcal{B}$ low in its lattice of subvarieties, $\mathcal{B}$ itself and the subquasivariety $\mathcal{S} \circ \mathcal{RB}$ , where $\mathcal{S}$ stands for semilattices and $\mathcal{RB}$ for rectangular bands, in several ways including by a set of axioms. For members of some of them we describe the structure as well. This succeeds by using the relation $\widetilde{\mathcal{H}}= \widetilde{\mathcal{L}} \cap \widetilde{\mathcal{R}}$ , where $a\;\,\widetilde{\mathcal{L}}\;\,b$ if and only if a and b have the same idempotent right identities, and $\widetilde{\mathcal{R}}$ is its dual. We also consider which provides the motivation for this study since coincides with completely regular semigroups, where is the variety of all groups. All this amounts to a generalization of the latter: instead of .
Keywords: Malcev product ; Unipotent monoid ; Quasivariety ; Strong semilattice ; Rectangular band ; Axiom
ISSN: 0037-1912
E-ISSN: 1432-2137
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• 9
Article
Language: English
In: Journal of Memory and Language, July 2012, Vol.67(1), pp.199-210
Description: ► We examined the ability of bimodal bilinguals to simultaneously process signs and words. ► No processing costs for production suggests lexical access is non-competitive. ► Comprehension facilitation indicates cross-linguistic/cross-modal lexical integration. Bilinguals who are fluent in American Sign Language (ASL) and English often produce – simultaneously articulating a sign and a word while conversing with other ASL–English bilinguals. To investigate the cognitive mechanisms underlying code-blend processing, we compared picture-naming times (Experiment 1) and semantic categorization times (Experiment 2) for code-blends versus ASL signs and English words produced alone. In production, code-blending did not slow lexical retrieval for ASL and actually facilitated access to low-frequency signs. However, code-blending delayed speech production because bimodal bilinguals synchronized English and ASL lexical onsets. In comprehension, code-blending speeded access to both languages. Bimodal bilinguals’ ability to produce code-blends without any cost to ASL implies that the language system either has (or can develop) a mechanism for switching off competition to allow simultaneous production of close competitors. Code-blend facilitation effects during comprehension likely reflect cross-linguistic (and cross-modal) integration at the phonological and/or semantic levels. The absence of any consistent processing costs for code-blending illustrates a surprising limitation on dual-task costs and may explain why bimodal bilinguals code-blend more often than they code-switch.
Keywords: Bilingualism ; Lexical Access ; Sign Language ; Education ; Languages & Literatures ; Psychology
ISSN: 0749-596X
E-ISSN: 1096-0821
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• 10
Article
In: Nursing Management (Springhouse), 2011, Vol.42(11), pp.51-54
Description: The importance of increasing bar code medication administration reliability. The problem of bar codes on wristbands and medications failing to scan is discussed and on-going initiatives to increase successful scan rates are outlined. The implications for patient care and patient safety of staff having to spend time troubleshooting and reporting scanning failures are highlighted. 9 references
Keywords: Drug Administration ; Clinical Errors and Prevention ; Information Technology ; Technology In Health Care ; Medical Errors ; Patient Safety ; Medical Technology ; Telemedicine ; United States–Us;
ISSN: 0744-6314
E-ISSN: 15388670
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