cssi/SciSciGPT-SciSciNet huggingface dataset:
Form, Uncertainty, and the Reduction of the Arbitrary in Postmodern Poetry

This article examines how uncertainty and the reduction of arbitrariness simultaneously create the tension necessary for the formal existence of the modern and postmodern poem in English. Building on sociologist Niklas Luhmann’s extensive investigations of art as one of many modern autopoietic social systems, the author examines how the system of poetry seeks to reduce the arbitrariness of utterances while simultaneously maintaining the semantic and syntactical uncertainty necessary for a poem’s formal existence as an aesthetic (quasi)object. The author examines poetry’s necessary resistance to code-formulations, concluding that the “noise” in poetic utterance is necessary to maintain the system of poetry given the social pressures of rampant legalism, fundamentalism, and hyper-commodification in which experience itself is being reduced to manipulable quanta.
Global change impacts on forest and fire dynamics using paleoecology and tree census data for eastern North America

The tree census, paleopollen, fossil charcoal, human population, and climate data presented here provide unique support for important anthropogenic influences on fire over the last 2000 years in the eastern USA. This includes multiple instances of climate fire anomalies that may be best explained by the role of human-caused burning. The coupling of paleoecological and tree census data to address larger global change questions is a novel research approach to describe and ascribe recent vegetation dynamics vis-a-vis the climate versus disturbance debate. The aims of the study are to (1) compile and compare pre-European settlement versus modern upland arboreal pollen and tree survey data from a large number of studies in various forest regions in the eastern USA, (2) analyze fossil charcoal dating back 2000 years for the northern versus central/southern tiers of the eastern USA, and (3) compare and contrast compositional and ecophysiological attributes for both datasets and temporal changes to known climate or disturbance phenomena to elucidate global change impacts and the drivers of forest change. We analyzed paleoecological (pollen and charcoal) and tree census studies to compare protohistoric and modern vegetation assemblage for eastern North America, including the drivers of forest change. A total of seven forest types in the north and central regions of the eastern USA were used to co-analyze fossil pollen, fossil charcoal, and tree survey data. Disparities and consistencies existed when independently assessing witness tree and pollen records. Although forests north of the tension zone line (TZL) contained mostly Fagus, Pinus, Tsuga, and Acer witness trees, pollen records were dominated, as expected, by high-pollen-producing Pinus, Quercus, Tsuga, and Betula. Here, present-day pollen and tree survey data revealed significant declines in Fagus, Pinus, Tsuga, and Larix and increases in Acer, Populus, Fraxinus, Quercus, and Abies. South of the TZL, both witness tree and pollen records pointed to Quercus and Pinus domination, with declines in Quercus and Castanea and increases in Acer and Betula based on present-day data. Modern assemblages comprise tree genera that are increasingly cool-adapted, shade-tolerant, drought-intolerant pyrophobes. Paleocharcoal data from 1 to 1750 AD indicate a slight increase in burning in southern forests and stable levels in the north, despite the increasing cold associated with the Little Ice Age. The most significant increase in burning followed the dramatic increase in human population associated with European settlement prior to the early twentieth century. Post-1940, fire suppression was an ecologically transformative event in all datasets. Our analysis identifies multiple instances in which fire and vegetation changes were likely driven by shifts in human population and land use beyond those expected from climate alone.
After-Hours Calls in a Joint Replacement Practice.

Abstract Background Early discharge after joint arthroplasty requires additional resources to manage patients safely after surgery. Patient concerns must be addressed during nonbusiness hours to keep patients out of the emergency department and avoid readmissions. The goal of our study was to determine how type of system is utilized in a busy early discharge joint replacement practice. Methods In our total joint program, we have utilized a Google phone number to give patients access to a member of the surgical team after business hours and on weekends. The duration, chief complaint, and resolution of from the phone calls were collected prospectively for 3 months (July 3, 2017-October 3, 2017). Results Sixty-eight calls were received from 55 patients during the 3-month study period. Three hundred twenty-five cases were performed. The average duration of a call was 3.9 minutes. The average length of time from surgery to call was 17.5 days (range 0-442 days). Suboptimal health literacy was associated with increased calls within the first week after surgery (odds ratio = 4.1, 95% confidence interval = 1.2-14.5, P = .022). A chief complaint of pain was associated with primary versus revision surgery. (odds ratio = 3.23, 95% confidence interval = 1.08-9.86). Discussion An “after-hours” telephone contact service with a member of the surgical team may help avoid unnecessary emergency department visits. About one phone call was received per day, with an average duration of 3.9 minutes per call. These additional resources are necessary to maintain patient safety and satisfaction in early discharge joint replacement.
The impact of chlorhexidine bathing on hospital-acquired bloodstream infections: a systematic review and meta-analysis.

Chlorhexidine gluconate (CHG) bathing of hospitalized patients may have benefit in reducing hospital-acquired bloodstream infections (HABSIs). However, the magnitude of effect, implementation fidelity, and patient-centered outcomes are unclear. In this meta-analysis, we examined the effect of CHG bathing on prevention of HABSIs and assessed fidelity to implementation of this behavioral intervention. We undertook a meta-analysis by searching Medline, EMBASE, CINAHL, Scopus, and Cochrane’s CENTRAL registry from database inception through January 4, 2019 without language restrictions. We included randomized controlled trials, cluster randomized trials and quasi-experimental studies that evaluated the effect of CHG bathing versus a non-CHG comparator for prevention of HABSIs in any adult healthcare setting. Studies of pediatric patients, of pre-surgical CHG use, or without a non-CHG comparison arm were excluded. Outcomes of this study were HABSIs, patient-centered outcomes, such as patient comfort during the bath, and implementation fidelity assessed through five elements: adherence, exposure or dose, quality of the delivery, participant responsiveness, and program differentiation. Three authors independently extracted data and assessed study quality; a random-effects model was used. We included 26 studies with 861,546 patient-days and 5259 HABSIs. CHG bathing markedly reduced the risk of HABSIs (IRR = 0.59, 95% confidence interval [CI]: 0.52–0.68). The effect of CHG bathing was consistent within subgroups: randomized (0.67, 95% CI: 0.53–0.85) vs. non-randomized studies (0.54, 95% CI: 0.44–0.65), bundled (0.66, 95% CI: 0.62–0.70) vs. non-bundled interventions (0.51, 95% CI: 0.39–0.68), CHG impregnated wipes (0.63, 95% CI: 0.55–0.73) vs. CHG solution (0.41, 95% CI: 0.26–0.64), and intensive care unit (ICU) (0.58, 95% CI: 0.49–0.68) vs. non-ICU settings (0.56, 95% CI: 0.38–0.83). Only three studies reported all five measures of fidelity, and ten studies did not report any patient-centered outcomes. Patient bathing with CHG significantly reduced the incidence of HABSIs in both ICU and non-ICU settings. Many studies did not report fidelity to the intervention or patient-centered outcomes. For sustainability and replicability essential for effective implementation, fidelity assessment that goes beyond whether a patient received an intervention or not should be standard practice particularly for complex behavioral interventions such as CHG bathing. Study registration with PROSPERO CRD42015032523 .
Conversion Disorder: Early Diagnosis and Personalized Therapy Plan Is the Key

Conversion disorder is characterized by one or more symptoms of altered voluntary motor or sensory functions that cannot be explained by a neurological disease (Keynejad, 2019; Samuels et al., 2019). We present a patient with conversion disorder and discuss her process in overcoming this disorder. Additionally, we review the literature about this specific disorder. A 15-year-old white female was diagnosed with conversion disorder and has shown significant recovery with physical therapy and group therapy since. It is essential to recognize this disorder early to lessen the financial burden on families and to speed up the recovery process for these patients.
A call for evidence to support food security interventions on college campuses.

Food insecurity negatively impacts collegiate academic performance, mental and social health and overall health status. However, nothing is known on the effectiveness of evidence-based programs to ...
A victims’ rights approach to the prevention of, and response to, sexual exploitation and abuse by United Nations personnel

Since its foundation in 1945, the United Nations’ role in situations of conflict, humanitarian crisis and development has expanded and diversified. As it has done so, victims of sexual exploitation...
Difficulties with health self-management by older adults: The role of well-being.

Abstract The purpose of this study was to investigate the association between three aspects of well-being (positive and negative affect, self-realization, and self-efficacy and resilience) and disease self-management or difficulties in managing care. Logistic regression models were used to analyze data from a sample of community-dwelling Medicare beneficiaries 65-years or older who participated in the National Health and Aging Trends Study and responded to well-being and engagement in health care questions (n = 1663). All three aspects of well-being were significantly associated with reduced difficulties in care management for both the participants and their family and friends who assist them. Self-efficacy and resilience had the strongest association; older adults with higher levels of self-efficacy and resilience were more likely to handle care by self. Our findings highlight the importance of incorporating strategies to enhance well-being of older adults to reduce the difficulties of managing activities necessary to stay healthy.
von Willebrand Disease

von Willebrand disease (VWD), the most common inherited bleeding disorder, is caused by quantitative or qualitative deficiencies in the von Willebrand factor (VWF) protein. VWF is crucial for platelet adhesion and aggregation at sites of vessel injury and also for stabilizing and transporting factor VIII (FVIII) to these sites. Clinical manifestations of VWD vary from mild to severe bleeding including mucosal and soft tissue bleeding, bleeding with surgery or trauma, muscle and joint bleeding, and female-specific bleeding such as heavy menstrual and other gynecological, pregnancy, and postpartum bleeding. Diagnosis of VWD includes a personal and family history of bleeding and abnormal laboratory assays for VWF. Treatment for VWD includes VWF replacement and adjunctive therapies including antifibrinolytics and hormonal therapy for gynecologic bleeding. This chapter will review VWD with emphasis on clinical features, diagnosis, and management pertaining to adolescent females.
Statin Prescription Rates, Adherence, and Associated Clinical Outcomes Among Women with PAD and ICVD

This study sought to investigate gender-based disparities in statin prescription rates and adherence among patients with peripheral arterial disease (PAD) and ischemic cerebrovascular disease (ICVD). We identified patients with PAD or ICVD seeking primary care between 2013 and 2014 in the VA healthcare system. We assessed any statin use, high-intensity statin (HIS) use, and statin adherence among women with PAD or ICVD compared with men. We also compared proportion of days covered (PDC) as a measure of statin adherence; PDC ≥ 0.8 deemed a patient statin adherent. Association between statin use (or adherence) and odds of death or myocardial infarction (MI) at 12-month follow-up was also ascertained. Our analyses included 192,219 males and 3188 females with PAD and 331,352 males and 10,490 females with ICVD. Women with PAD had lower prescription rates of any statin (68.5% vs. 78.7%, OR 0.68, 95% confidence interval (CI) 0.62–0.75), HIS (21.1% vs. 23.7%, OR 0.88, 95% CI 0.79–0.97), and lower statin adherence (PDC ≥ 0.8: 34.6% vs. 45.5%, OR 0.75, 95% CI 0.69–0.82) compared with men. Similar disparities were seen in ICVD patients. Among female patients with PAD or ICVD, statin adherence was associated with lower odds of MI (OR 0.76, 95% CI 0.59–0.98), while use of any statin (OR 0.71, 95% CI 0.56–0.91) and HIS (OR 0.68, 95% CI 0.48–0.97) was associated with lower odds of death at 12 months. Women with PAD or ICVD had lower odds of receiving any statins, HIS, or being statin adherent. Targeted clinician- and patient-level interventions are needed to study and address these disparities among patients with PAD and ICVD.
Learning About the Stories of Children With Refugee Backgrounds Through the Lens of Positioning Theory

This study explores how children with refugee backgrounds position themselves within their life experiences in the United States. Positioning theory is utilized as the theoretical framework. The da...
Class Characteristics of Hispanic Writing in the Southeastern United States

Handwriting exemplars of Hispanic writers, who were born in a Latin American country and who now reside in the southeastern United States, were examined to discern class characteristics. Embellishments, pen-lifts, and variety of letter forms and writing movements were common features found in the handwriting of Hispanics. Although Hispanic writing reflected a “foreign” influence, determination as to the writer's country of origin was not possible.
The Preparation and Characterization of Two New Heteropolyoxotungstate Anions, Na12[Co6W18O70H8]·39 H2O and Na12[Fe6W18O70H2·26 H2O

Abstract The sodium salts of two heteropoly anions, [Co6W18O70H8]12- and [Fe6W18O70H2]12-, have been isolated in the crystalline form. Evidence from chemical analyses. Fast Atom Bombardment mass spectroscopy (FABMS), infrared spectroscopy (IR), ultraviolet spectroscopy (UV), visible spectroscopy, and cyclic voltammetry support the above formulations. The structure of these anions is believed to be similar to the Weakley structure in which two half Keggin structures sandwich between them four metal ions of octahedral coordination.
Introduction to MIMO Communications: Space-time coding

In the previous chapter, we considered Alamouti space-time coding, which enables transmit diversity with optimum performance. As we saw, although Alamouti coding works with any number of receive antennas, it is restricted to cases where there are only two transmit antennas. In this chapter, we broaden our discussion and consider space-time codes that support more than two transmitters. Since Alamouti's code was introduced in 1998, much research has been conducted in the area of space-time coding for MIMO applications, and space-time coding is now a broad field encompassing many different types of coding schemes. Space-time codes fall into one of two primary classes: space-time block codes (STBCs) and space-time trellis codes (STTCs). STBCs, in turn, fall into two subclasses called orthogonal space-time block codes (OSTBCs) and non-orthogonal space-time block codes (NOSTBCs). In this chapter we focus on OSTBCs because they have simple decoding schemes and are used in practical wireless systems. The chapter begins with a general discussion of space-time coding concepts and terminology, followed by a section that derives criteria for designing space-time codes. Next, we describe OSTBCs in detail and describe how to decode them. After that, we include a brief section on NOSTBCs, listing some specific ones that have been proposed and giving references for further reading. We conclude the chapter with a section on STTCs.
Progress in large-aperture, grating-coupled diode-laser amplifiers

Summary form only given. Large-aperture, active-grating, surface-emitting diode lasers offer a scalable approach for extending the power output capabilities of semiconductor sources. Recent results will be reviewed and future directions will be discussed. >
Plastic Design of Multistory Steel Frames by Computer

A method, implemented in a FORTRAN program, is developed for plastic design of both braced and unbraced multistory steel frames including a consideration of elastic stress and elastic deflection constraints. It is applicable to the design of rectangular multistory planar steel frames with coplanar loading. The method consists of three parts. The plastic analysis and design part follows a story-by-story optimization technique to determine a favorable force distribution in the frame in order to minimize steel cost. Member selection is in accordance with the 1969 AISC Manual of Steel Construction Specifications. An iterative design procedure is used to account for the \IΡ - Δ\N effect. The elastic analysis and elastic stress design part utilizes an exact matrix stiffness analysis and redesigns members to satisfy user imposed elastic stress constraints. Finally, the elastic stiffness design part follows a story-by-story optimization technique to redesign members in order to satisfy user imposed elastic lateral deflection constraints while minimizing steel cost increases. Example problems are presented which indicate the practicality of the design system.
The Use Of Social Media And Collaborative Tools For Virtual Teaming - A Global Market Reach Out By Navibank

In recent years, social networking sites have witnessed a significant growth in popularity and membership. These social networking sites like Facebook or LinkedIn use tools that also appeal to businesses. One important area of business application of social networking is to improve communication and trust relationships among virtual project teams (Sarker, Ahuja & Kirkeby, 2011; Anantatmula & Thomas, 2010). In this paper, the authors report the use of social media tools for virtual teaming for a large Vietnamese bank, Navibank. The paper delves into the strategic initiative and expansion into global markets using virtual project teams that communicated mostly through social media tools and services. Navibank (hereafter known as the Bank) is one of the top ten largest commercial banks in Vietnam. In a large project of opening ten branches of the Bank in Cambodia by the end of 2015, social media tools like Skype, e-mail, Facebook, instant messaging and video conference are being used by the Bank teams in Vietnam to communicate and work effectively with the new teams that are being formed in Cambodia.
Double-barrel pipette system for microinjection

A method for constructing double-barrel micropipettes is described. The pipettes are made from theta-tubing, which permits easy beveling of the tips. The two sides of the system operate independently and are suitable for simultaneous microinjection, microperfusion, or servo-null micropressure measurements.
Lithium Methyl(phenylthio)cuprate

[53128-68-0] C10H14CuLiS (MW 236.80) InChI = 1S/C6H6S.C4H9.Cu.Li/c7-6-4-2-1-3-5-6;1-3-4-2;;/h1-5,7H;1,3-4H2,2H3;;/q;;+1;/p-1 InChIKey = HRSUSAKFJNOOQD-UHFFFAOYSA-M (primary heterocuprate capable of nucleophilic additions and substitutions2) Solubility: sol THF, ether. Analysis of Reagent Purity: an assay to determine relative thermal stabilities3 can be used to estimate reagent quality and concentration: a sample of known volume and temperature is quenched with excess PhCOCl, and the yield of PhCO(n-Bu) is measured by GC, the response of which is calibrated using authentic product and n-dodecane as internal standard. Preparative Methods: 1.0 equiv of n-Butyllithium is added dropwise to a 0.2 M, 0 °C THF solution of Thiophenol in a three-neck flask equipped with N2 inlet, solid addition funnel, and rubber septum; after stirring for 10 min, 1.0 equiv of Copper(I) Iodide is added via the addition funnel; stirring for an additional 15 min provides a clear, yellow solution which is cooled to −78 °C; 1.0 equiv of n-BuLi is then added dropwise via syringe;4, 5 after 1 h, the light brown, opaque solution is ready for use. Alternate sources of PhSCu may be acceptable; PhSCu in purities of 95–>98% is commercially available.6 Handling, Storage, and Precautions: use in a fume hood; best results are obtained with high-purity copper(I) salts,7 dry, O2-free solvents, and alkyllithium solutions free of contaminating alkoxides or hydroxides;8 n-BuLi is pyrophoric,9 and due care must be exercised in its handling; the reagent has greater stability in THF than in ether; thermal decomposition is minimal at or below −25 °C but is substantial at 0 °C.3b
Practical, stable standards for the reversed phase HPLC analysis of peptidic leukotrienes

Abstract The stable glutathione derivatives 1 , R = n -C 6 H 13 and R = n -C 8 H 17 , are useful as reference compounds for the identification and quantitation of leukotrienes C 4 , D 4 and E 4 by reversed phase HPLC analysis.
The Selective Dispersion of Mercury Vapor at the λ 2536 Absorption Line

By means of a Rayleigh's gas refractometer, measurements were made on the interference fringes in seven iron lines extending about 3 A.U. on both sides of the mercury absorption line at $\ensuremath{\lambda}2536.7$. The mercury vapor pressures used ranged from 0.0015 to 0.113 mm of mercury. Shifts of fringes for the line closest to $\ensuremath{\lambda}2536.7$ were found to be proportional to the density of the vapor, while farther from the absorption line, the displacements of the fringes increased less rapidly than the density of the vapor. This is probably due to the increasing width of the absorption line and not to complex mercury molecules as has been previously suggested. The molecular refractive indices for the wave-lengths 2536.9, 2538.4, and 2535.6 were found to be respectively 1.068, 1.006, and 0.988. Selective dispersion in the vicinity of $\ensuremath{\lambda}2536.7$ was demonstrated by means of crossed prisms.Data by Cuthbertson and Metcalfe on refractive indices of mercury vapor indicate an absorption band somewhere between $\ensuremath{\lambda}6560$ and $\ensuremath{\lambda}6900$. Since no evidence of selective dispersion was found in this region, it was concluded that their value for the index at $\ensuremath{\lambda}6560$ is about three percent low.
Investigating Graph Algorithms in the BSP Model on the Cray XMT

Implementing parallel graph algorithms in large, shared memory machines, such as the Cray XMT, can be challenging for programmers. Synchronization, deadlock, hot spotting, and others can be barriers to obtaining linear scalability. Alternative programming models, such as the bulk synchronous parallel programming model used in Google's Pregel, have been proposed for large graph analytics. This model eases programmer complexity by eliminating deadlock and simplifying data sharing. We investigate the algorithmic effects of the BSP model for graph algorithms and compare performance and scalability with hand-tuned, open source software using GraphCT. We analyze the innermost iterations of these algorithms to understand the differences in scalability between BSP and shared memory algorithms. We show that scalable performance can be obtained with graph algorithms in the BSP model on the Cray XMT. These algorithms perform within a factor of 10 of hand-tuned C code.
Acute myocardial infarction in a young hemophiliac patient during therapy with Factor IX concentrate and epsilon aminocaproic acid

7. Neter E: Bacterial hemagglutination and hemolysis, Bacteriol Rev 20:166, 1956. 8. Kampschmidt RF, and Schultz GA: Hypoferremia in rats following injection of bacterial endotoxin. Proc Soc Exp Biol Med 106:870, 1961. 9. Hershko C, Cook JD, and Finch CA: Storage iron kinetics. VI. The effect of inflammation on iron exchange in the rat, Br J Haematol 28:67, 1974. 10. Elin RJ, Wolff SM, and Finch CA: Effect of induced fever on serum iron and ferritin concentrations in man, Blood 49:147, 1977. 11. Fernandez H. Low serum iron in influenzae, N Engl J Med 302:865, 1977. 12. Pekarek RS, Bostian KA, Bartelloni PJ, et al: The effects of Francisella tularenis infection on iron metabolism in man, Am J Med Sci 258:14, 1969.
Experimental and Numerical Study of Gas-Liquid Displacements in Flow Cells, With Application to Carbon Dioxide Sequestration in Brine Fields

In this paper experimental and computational modeling methods for studying viscous fingering phenomena occurring during underground CO2 sequestration were developed. In the experiment, the displacement of two immiscible fluids in a lattice-like flow cell was studied. The flow pattern during the displacement was analyzed, and the residual saturation of the displaced fluid was measured. Numerical simulations of the experimental flow cell were performed. The numerical simulation results are compared with the experimental data good agreement was observed.Copyright © 2002 by ASME
Analysis of photoenzymatic repair of UV lesions in DNA by single light flashes. V. Determination of the reaction-rate constants in E. coli cells.

Abstract It was shown earlier that the use of intense light flashes permits analyzing in greater detail the reaction steps involved in photoenzymatic repair (PER). This paper describes experiments in which the reaction-rate constants for the formation of enzyme-substrate complexes ( k 1 ) and dark dissociation of the complexes ( k 2 ), and the photolytic constant ( k p ) for the light-dependent repair step have been determined in E. coli B s−1 . All three reactions are heterogeneous with respect to these constants. Presumably this reflects the diversity of pyrimidine dimers in irradiated DNA, all of which serve as substrate for photoreactivating enzyme (PRE); the following values are weighted averages. At room temperature, k 1 equals 1.8·10 −3 cell volumes·molecules −1 ·sec −1 , which for a cell volume of 10 −15 liter corresponds to 1.1·10 6 liter·mole −1 ·sec −1 . For k 2 , values ranging from 1.9·10 −3 to 1.3·10 −2 sec −1 have been obtained in different experimental approaches, depending on which criteria were used. k p has been determined under conditions where all of the substrate is complexed with photoreactivating enzyme at the beginning of the illumination. For the wavelengths 385, 366, and 355 nm k p values of, respectively, 1.75·10 −3 , 1.37·10 −3 , and 1.13·10 −3 mm 2 ·erg −1 , have been obtained. From the values the product of ϵ (the molar extinction coefficient of the enzyme-substrate complexes) and Φ (the quantum yield of the photolytic reaction) can be calculated. At the most effective wavelength (385 nm), ϵΦ equals 2.4·10 4 liter·mole −1 ·cm −1 , indicating that both ϵ and Φ must be high. ϵ must be ⩾2.4·100 4 l liter·mole −1 ·cm −1 , since Φ cannot exceed 1; Φ is probably between 10 −1 and 1, since ϵ values >10 5 are unlikely. k 1 and k 2 show positive temperature dependence in the range 5 to 37°, corresponding to activation energies of 11 kcal·mole −1 and about 4.5 kcal·mole −1 for the respective steps, while k p was earlier shown to be essentially temperature-independent in this range.
Heterodyne mixing efficiency for detector arrays.

Monostatic radar equations are reported for laser–transceiver sensors that employ coherent optical detection over a linear-array photodetector. Explicit results are presented illustrating the impact of transmitter and receiver antenna patterns on the heterodyne mixing efficiency achieved by each detector element.
Food Habits and Future Time: An Exploratory Study of Age-Appropriate Food Habits among the Elderly:

This exploratory research effort examines future time perspective and its association with a behavioral change, i.e., food habits, among a sample of elderly persons. Demographic and social conditions under which a positive or negative future time may be associated with changes in food habits are explored. The findings suggest that the elderly do make changes in their food habits, and there is an association of positive or negative food habit changes with a positive or negative future time perspective. The future time perspective and the food habit changes are couched in certain types of demographic and social conditions such as with whom one lives, recent widowhood, health status, and sex.
Collaborative teacher education: forging tangible connections between field and classroom

This paper describes a collaboration between the authors, a university course instructor for an introductory Learning Sciences course in a university-based teacher education program, and a site coordinator for its paired practicum experience. Drawing on Cultural-Historical Activity Theory, the collaborators found that their weekly conversations focused on supporting novice teacher learning had the potential to (1) lead to more strategic support of pre-service teachers, and (2) lend greater insights into the nature of the larger teacher education activity system in which they both worked. They consider the ways the seemingly simple addition of weekly conversations across sites of teacher learning can create spaces that collapse traditional theory/practice divides in teacher education.
Nitric oxide and prostacyclin treatment of an infant with primary pulmonary hypertension

Abstract Primary pulmonary hypertension is a progressive disease with high mortality. The etiology of primary pulmonary hypertension in pediatric patients is unknown; some cases are thought to be familial, 1 but most are sporadic. Mortality is high if the disease is present in infants 2,3 Younger children with primary pulmonary hypertension have a larger decrease in pulmonary vascular resistance (PVR) with vasodilators than older patients, suggesting vasoconstriction is more important than structural changes in the development of pediatric primary pulmonary hypertension. 4 Therefore, vasodilator therapy may be more successful in younger patients because of increased pulmonary vasoreactivity. Prostacyclin is often effective as an acute vasodilator in pediatric primary pulmonary hypertension. 4 Therapy with prostacyclin and other vasodilators is frequently limited because of systemic hypotension. Brief inhalation of nitric oxide selectively dilates the pulmonary vascular bed of adults with primary pulmonary hypertension 5 and children with primary pulmonary hypertension 6 and congenital heart disease, 7,8 but has not been used as prolonged therapy without assisted ventilation. We describe a case of primary pulmonary hypertension in which inhalation of nitric oxide successfully aided the transition to chronic prostacyclin infusion (therapy with oxygen and calcium antagonists was not effective and prostacyclin was not immediately available).
Thirring model on a Riemann surface

Abstract An earlier study of the Thirring model partition function is extended to incorporate twisted boundary conditions on the homology cycles of a genus g Riemann surface without boundaries. Two bosonized path integral representations of the Thirring partition function are studied and shown to be equivalent and to reproduce the fermi version including details of spin structures. For manifolds with boundaries, the example of the cylinder shows that the bosonized representations are equivalent but associated with different de Rham cohomologies.
Clinical evaluation of left ventricular function using the cardiac helical fiber model: an echocardiographic study.

Abstract The cardiac helical fiber concept was introduced in 1969 and was shown mathematically to provide better approximations of normal ejection fractions compared with the conventional circumferential fiber model. The clinical applicability of this concept was evaluated noninvasively by M-mode and two-dimensional echocardiography in 55 subjects: 10 with aortic insufficiency, 10 with congestive cardiomyopathy, eight with hypertension, eight who were long-distance runners, 12 who were active and seven who were sedentary normals. Comparison of myocardial shortening by the circumferential and helical fiber models showed that the former discriminated only two groups of subjects, while endocardial and epicardial helical shortening discriminated three and four groups, respectively. Regression analyses suggest that more than 90% ( r 2 = 0.92) of variation in ejection fraction may be accounted for by variation in endocardial shortening, and that more than 75% ( r 2 = 0.77) of variation in observed endocardial shortening may be a3counted for by variation in epicardial contraction. The study demonstrates that the helical fiber length concept may be useful for the noninvasive evaluation of left ventricular function in man.
Development and characterization of polyclonal antibodies against a conserved sequence in the catalytic domain of protein kinases.

Abstract Using a synthetic oligopeptide (CGGGTPEYLAPEGGK) crosslinked to keyhole limpet hemocyanin we have raised polyclonal rabbit antibodies against a 9 residue homologous region found in the catalytic domain of most protein kinases. These antibodies reacted during Western immunoblotting with cAMP dependent protein kinase catalytic subunit, phosphorylase kinase γ subunit and calcium calmodulin dependent protein kinase II which have homologous sequences of GTPEYLAPE, GTP S YLAPE and GTP G YL S PE, respectively. Five other protein kinases did not react with anti-GTPEYLAPE antibodies during Western immunoblotting. Affinity-purified antibodies were able to detect as little as 50 ng of cAMP dependent protein kinase and 200 ng of Ca2+/calmodulin dependent protein kinase II. Immunoblotting of A431 cell plasma membrane vesicles indicated the presence of an approximately 55 kDa protein that contains the conserved sequence and is likely to be a protein kinase. Antibodies directed against conserved sequences present in protein kinases, or possibly other enzymes, may be useful in identifying previously uncharacterized enzymes at the protein level.
Non-Small Cell Lung Cancer Resection in Lymphoma Patients

Background Lymphoma patients are at an increased risk of developing secondary malignancies, including lung cancer. It is unknown if these patients are at higher risk of dying from pulmonary resection due to lymphoma or if they have reasonable long-term survival. Methods We identified 47 lymphoma patients, seven of which had active lymphoma and forty with a history of lymphoma, who underwent resection for lung cancer between 1998 and 2008. We matched lymphoma patients with lung cancer patients who had no lymphoma based on age, gender, surgery type, comorbidities, stage, and histology. We analyzed differences in the length of hospitalization, morbidity, mortality, and overall and lung cancer specific survival between the lymphoma group and the matched no lymphoma group. Results We found no significant difference in length of hospitalization, morbidity, or mortality between the lymphoma and matched no lymphoma group. The lymphoma group's 5-year overall survival rate (35%) was significantly lower than that of the no lymphoma group (67%; p = 0.04). However, the difference in lung cancer-specific survival between the groups was not significant. The cause-of-death analysis revealed that lymphoma patients also died from recurrent lymphoma or myelodysplastic syndrome-acute myeloid leukemia. Multivariate analysis revealed that older age, higher stage, and active lymphoma status were significant adverse predictors of survival. Conclusions There is no significant increase in operative morbidity and mortality for lymphoma patients having pulmonary resection for lung cancer. The survival for lymphoma patients is decreased but still acceptable with no difference in lung cancer-specific survival.
Roles of genetic variants in the PI3K and RAS/RAF pathways in susceptibility to endometrial cancer and clinical outcomes.

Purpose The phosphatidylinositol 3-kinase (PI3K)/PTEN/AKT/mTOR and Ras/Raf/MEK/ERK pathways have been implicated in endometrial tumorigenesis. In this candidate pathway analysis, we investigated associations between genetic variations in these two pathways and both risk and clinical outcomes of endometrial cancer.
Differentiation of Avian Thrombocytes from Leukocytes by Use of Giemsa’s Stain

Abstract In the course of investigation of the leukocytic response to artificial infections with Eimeria tenella in chickens, considerable difficulty was encountered in the differentiation of thrombocytes from small lymphocytes. Initially blood films for differential counting were prepared in the conventional manner and stained by Wright's Method, as described by Lucas and Jamroz (1961). In the microscopic examination of films stained by this method, monocytes, large lymphocytes, and polymorphonuclear cells were easily distinguished. However, thrombocytes and small lymphocytes were often confused, in spite of close adherence to the diagnostic criteria for these cells as set forth by Lucas and Jamroz (1961). In view of the unsatisfactory results with Wright's stain, an alternate method was sought. The high degree of cellular differentiation reported for Giemsa's stain when used for blood parasites led to the investigation of the use of this method as a routine blood film-staining procedure. Blood films were prepared within . . .
Clinical and economic outcomes of pharmacist-managed antimicrobial prophylaxis in surgical patients.

Purpose. The associations between pharmacist-managed antimicrobial prophylaxis in Medicare patients who had surgical codes indicative of the need for antimicrobial prophylaxis and the major health care outcomes of death rate, length of stay, Medicare charges, drug charges, laboratory charges, and complications were explored. Methods. Pharmacist management of antimicrobial prophylaxis was evaluated in 242,704 Medicare patients from 806 hospitals. Results. Patients who developed a surgical-site infection (SSI) had a 331.58% increased risk of death compared with patients who did not develop an SSI (χ2 = 743.471; df = 1; p < 0.0001; odds ratio [OR], 3.62; 95% confidence interval [CI], 3.28–3.99). Patients who developed an SSI also had a 167.16% increase in length of stay, 136.49% increase in total Medicare charges, 245.96% increase in drug charges, and 187.14% increase in laboratory charges. In hospitals without pharmacist-managed antimicrobial prophylaxis, death rates were 52.06% higher (105 excess deaths; p < 0.0001; OR, 1.54; 95% CI, 1.46–1.63), length of stay was 10.21% higher (167,941 excess patient days, p < 0.0001), mean ± S.D. total Medicare charges were 3.10% higher ($980 ± $1,109 more per patient) ($182,113,400 excess total Medicare charges, p < 0.0001), mean ± S.D. drug charges were 7.24% higher ($292 ± $492 more per patient) ($54,262,360 excess drug charges, p = 0.005), mean ± S.D. laboratory charges were 2.72% higher ($74 ± $151 more per patient) ($13,751,420 excess laboratory charges, p = 0.0056), and SSIs were 34.30% higher (χ2 = 95.48; df = 1; p < 0.0001; OR, 1.52; 95% CI, 1.40–1.66). Conclusion. The provision of pharmacist-managed antimicrobial prophylaxis was associated with significant improvement in clinical and economic outcomes for Medicare patients with a surgical code indicative of the need for antimicrobial prophylaxis.
Adrenergic control of lipogenesis and lipolysis in the chicken in vitro.

Abstract The adrenergic inhibition of lipogenesis and stimulation of lipolysis in the avian has been examined using chicken hepatocytes and adipose tissue expiants in vitro. Lipogenesis was inhibited by adrenergic agonists: epinephrine (α + β) > isoproterenol ( β 1 β 2 ) > norepinephrine ( α 1 α 2 , β1) > metaproterenol (β2), phenylephrine (α1). Dobutamine (β1 agonist) and dopamine (dopaminergic agonist) did not significantly affect [14C]acetate incorporation into lipid, while clonidine and para -aminoclonidine (α2 agonists) were slightly stimulatory. Lipolysis in young and adult chicken adipose tissue was stimulated by epinephrine, isoproterenol, phenylephrine, dobutamine and metaproterenol, but was inhibited by clonidine and para-aminoclonidine. Both the antilipogenic and lipolytic effects of epinephrine were partially blocked by phentolamine (α1 = α1 antagonist) or propranolol (β1 = β2 antagonist), but completely inhibited by phentolamine and propranolol administered together.
Marital Compatibility as Related to Personality Traits of Husbands and Wives as Rated by Self and Spouse

(1941). Marital Compatibility as Related to Personality Traits of Husbands and Wives as Rated by Self and Spouse. The Journal of Social Psychology: Vol. 13, No. 1, pp. 193-198.
Iron availability, nitrate uptake, and exportable new production in the subarctic Pacific

This paper presents a critique of experimental data and papers by Martin et al. (1989, 1990), who suggested that the phytoplankton growth is iron-limited and that, small additions of iron to large subarctic ocean areas might be a way of removing significant amounts of atmospheric CO2 by increasing phytoplancton growth. Data are presented to show that, in the summer of 1987, the phytoplankton assemblage as a whole was not iron limited, as measured by the bulk removal of nitrate or by the increase of chlorophyll. It is suggested that grazing normally prevents the phytoplankton from reaching concentrations that reduce the iron (and nitrate) to levels that depress division rates drastically.
Percutaneous biopsy of focal lesions of the gastrointestinal tract

To evaluate the technical success and diagnostic accuracy of image-guided percutaneous biopsy of the gastrointestinal (GI) tract. An interventional radiology database was used to retrospectively identify patients who underwent image-guided percutaneous biopsy of the GI tract. The medical and imaging records were reviewed to assess biopsy results and complications. Twenty-nine patients (M:F = 19:10, mean age 65 years) were identified who underwent image-guided (CT/US) percutaneous biopsies of the GI tract. All biopsies were performed using coaxial technique with 18 g core and 22 g FNA needles. Twenty-two biopsies (76 %) were for circumferential or segmental wall thickening; the remaining were wall thickening with exophytic mass. Mean tumor diameter was 7.4 cm (SD = 3.4 cm), average wall thickening was 2.1 cm (SD 7.2), and exophytic mass was 10.0 cm (SD = 4.2). Tumor locations included stomach (n = 5), small bowel (n = 8), and colon (n = 16). Malignancy was confirmed in 22 patients, 12 of whom underwent excision, with 3 false positive samples. Benign disease was diagnosed in 7 patients, including 3 with pathology confirmation, with one false negative sample. The overall sensitivity was 83 % and accuracy was 84 %. There was one complication presenting as bleeding at the biopsy site, treated conservatively. Percutaneous biopsy of the GI tract is an uncommon procedure. The results of this study suggest that it is a safe and sensitive procedure that may be considered for small bowel lesions in which endoscopy is not feasible, for submucosal lesions, or in the setting of patients with previously negative endoscopic biopsies.
Effectiveness of Various Methods of Sex Hormone Administration for the Induction of Heat in the Spayed Female Guinea Pig and Rat

MANY EXPERIMENTS have been reported on the effectiveness of hormone administration by other than the parenteral route. It is quite generally agreed that the oral route is least effective1 while percutaneous application is often nearly as effective as subcutaneous injection. In a previous report2 on the oral effectiveness of progesterone and pregneninolone in the spayed female guinea pig it was shown that 20 times the subcutaneous dose was required to elicit behavioral mating responses. Using the mating response characteristic of the guinea pig and rat as a criterion,3,4 it was practicable to compare the two species in their sensitivity to various sex hormones when administered orally, percutaneously or subcutaneously. Materials and methods. Spayed female guinea pigs and rats are properly conditioned if given 10 R.u. estradiol benzpatej subcutaneously in oil. The animals can be brought into heat if they receive subcutaneously 0.05 mg. (guinea pig) or 0.4 mg. (rat) progesteronef 48 or 72, hours later.
Process Drama in One Fifth-Grade Social Studies Class

The purpose of this study was to describe a group of fifth grade students as they engaged in process drama during their social studies class. The author found that students who engaged in process drama learned to combine texts to understand and create new texts. As they became engaged in the material, students collaborated with each other and became leaders in class while honoring the cultures they studied in their social studies textbooks.
Calculated spectrum of inverse-Compton- scattered photons.

We consider an electron of a given energy moving in a monoenergetic, isotropic radiation field. The energy spectrum of the photons that are scattered by the electron has been calculated both exactly and in a greatly simplied approximate form suitable for astrophysical calculations. The approximation may be derived either by expanding the exact solution in a small parameter and keeping only the leading terms or by employing a simplifying physical approximation at the beginning of the calculation. The approximate spectrum is similar to one previously derived by Ginzburg and Syrovatskii, the principal difference being that the present one does not break down if $\ensuremath{\hbar}{\ensuremath{\omega}}_{1}Eg{({m}_{e}{c}^{2})}^{2}$, where $\ensuremath{\hbar}{\ensuremath{\omega}}_{1}$ is the initial photon energy and $E$ the electron energy. We indicate the astrophysical applications of our approximate spectrum by calculating the spectrum of photons scattered by electrons with an inverse-power-law energy distribution.
Synchrotron sources. I - Extension of theory for small pitch angles.

Some of the features of synchrotron radiation are examined which occur when relativistic particles move at small pitch angles in a magnetic field. The emission from individual particles is computed. The general properties of the emission from distributions of particles with small pitch angles is discussed, and the emissivities and degrees of polarization for several specific source models are presented. For sources which mainly contain particles with small pitch angles, the degree of circular polarization will normally be high, whereas, if the magnetic field is somewhat irregular, the degree of linear polarization will be small. If the particle distribution also has a low-energy cutoff, the emissivity will vary linearly with frequency at low frequencies.