Stability of Ca-montmorillonite hydrates: A computer simulation study

Classic simulations are used to study interlayer structure, swelling curves, and stability of Ca-montmorillonite hydrates. For this purpose, NPzzT$ and MuPzzT ensembles are sampled for ground level and given burial conditions. For ground level conditions, a double layer hydrate having 15.0 A of basal spacing is the predominant state for relative vapor pressures (p/po) ranging in 0.6-1.0. A triple hydrate counting on 17.9 A of interlaminar distance was also found stable for p/po=1.0. For low vapor pressures, the system may produce a less hydrated but still double layer state with 13.5 A or even a single layer hydrate with 12.2 A of interlaminar distance. This depends on the established initial conditions. On the other hand, the effect of burial conditions is two sided. It was found that it enhances dehydration for all vapor pressures except for saturation, where swelling is promoted.Comment: 8 pages, 9 figure

Challenging the Health Impacts of Incarceration: The Role for Community Health Workers

With 2.1 million Americans behind bars, the United States incarcerates more people per capita than any other country in the world. This article examines the ways mass incarceration contributes to poor health, particularly within poor communities and communities of color, which already bear a disproportionate burden of ill-health and disease. We explore the multiple health impacts of incarceration and the ways current criminal justice policies contribute to health disparities. We discuss the role of Community Health Workers in mitigating the effects of incarceration by fostering social support, linking formerly incarcerated individuals with existing community services and acting as agents for social change

Microaggressions and intercultural competence in the Spanish classroom

Microaggressions are subtle offensive mechanisms that can be intentional or unintentional (Pierce, 1970). For the past 50 years, researchers have documented their damaging effects on peoples’ mental and physical health. In this report, we focus on microaggressions in the Spanish classroom and with Latino/Latinx/Hispanic students, including their damaging effects within the context of changing demographics in the United States, how they impact our language classrooms, and how they can be mitigated through language curricula that promote intercultural citizenship. Also, we share strategies and suggestions to counter microaggressions in the language classroom, grounded in the assumption that to support socially just learning environments, educators must create a healthy atmosphere where all students feel safe, respected, and validated, and are held to high academic and civic standards. We believe that language teachers are uniquely positioned to create learning environments that model intercultural perspectives and foster the necessary openness to analyze and understand different perspectives as students advance their intercultural competence

Aging after shear rejuvenation in a soft glassy colloidal suspension: evidence for two different regimes

The aging dynamics after shear rejuvenation in a glassy, charged clay suspension have been investigated through dynamic light scattering (DLS). Two different aging regimes are observed: one is attained if the sample is rejuvenated before its gelation and one after the rejuvenation of the gelled sample. In the first regime, the application of shear fully rejuvenates the sample, as the system dynamics soon after shear cessation follow the same aging evolution characteristic of normal aging. In the second regime, aging proceeds very fast after shear rejuvenation, and classical DLS cannot be used. An original protocol to measure an ensemble averaged intensity correlation function is proposed and its consistency with classical DLS is verified. The fast aging dynamics of rejuvenated gelled samples exhibit a power law dependence of the slow relaxation time on the waiting time.Comment: 7 pages, 6 figure

Incorporating Knowledge of Students Systematically into TPACK-based Instruction: An Illustration

How might teachers’ knowledge of students’ specific learning needs and preferences be incorporated into their TPACK, and subsequently into their practice? How can this knowledge help teachers to select and employ particular technologies in specific ways that can accommodate students’ differing learning requirements? Building upon previous work that supports teachers’ TPACK-based instructional planning with taxonomies of learning activity types in nine different curriculum areas, we developed a taxonomy of teaching strategies, each supported by recommended digital technologies, that are specific to particular learners’ needs. In this first TPACK-based teaching strategies taxonomy, the needs of English Language Learners (ELLs) are addressed. The new taxonomy is designed to be used in concert with one or more curriculum-based learning activity types taxonomies, scaffolding the development and use of teachers’ TPACK while they are planning curriculum-based, well-differentiated instruction

Auditieve hersenstampotentialen bij de mens : een studie van enkele fundamentele eigenschappen en hun klinische toepassing

The aim of the author's research described in this thesis was to obtain abetter understanding of a number of the fundamental characteristics of brainstem potentials and to establish normal values. This aim is described in chapter I, following a discussion of the possibilities and limitations of objective and subjective audiometry, an outline of the development of electroaudiometry and a description of the regions of origin of brain stem potentials and their nomenclature. The experimental set-up is discussed in chapter II, where the signal-tonoise ratio receives special attention. The description of the clinical application of brain stem audiometry in chapter VIII is based on both the literature and personal research. Chapter IX gives some practical suggestions for the application of brainstem audiometry. The author's own research, which is described in chapter III-VII, deals with the following subjects: 1. The aceurenee of and normal values for brain stem potentials. The occurrence of brain stem potentials and their normal values were investigated in 20 healthy subjects, 19 men and 1 woman, with normal hearing and ages varying from 20-53 years. The stimulus used had a wide frequency spectrum, with an intensity of 70 dB HL and a repetition rate of 10 Hz. The responses were filtered with a high-pass filter, cut-off frequency 300 Hz, 24 dB/oct., and a !ow-pass filter, cut-offfrequency 3000Hz, 24 dB/oct. After averaging 16,000 responses to binaural stimulation it was possible to identify the peaks P2 to P5 inclusive, for 75, 70, 85 and 100°/o of the test subjects respectively, while after averaging 4,000 responses to manaural stimulation the proportions were 65, 63, 78 and 98% respectively. The amplitudes of the responses were highly variable. The latendes were constant within narrow limits (table 3.1). The average latency for peak P5 was 7.0 ms with a standard deviation of0.35 ms. The interaurallatency difference averaged 0.02 ms and had a standard deviation of0.27 ms. 2. The distribution of brainstem potentials over the scalp. The distribution of brainstem potentials over the scalp was investigated to establish whether there are any electrode positions where the response originates primarily from the left or the right half of the brain stem. In order to do this the responses were recorded at 5 points on the nasion-vertex-inion line and the vertex-mastoid process line. The responses on the latter were obtained after ipsi- and contralateral stimulation with respect to the active electrode

First Year Hindi Course Part One: Workbook

Asian Studie

Advances in Barrett’s Esophagus Surveillance and Improved Prediction of Prognosis and Therapy Response in Patients with Esophageal Adenocarcinoma

Patiënten met een Barrett slokdarm, waarbij het normale plaveiselcelepitheel is vervangen door intestinale metaplasia met slijmbekercellen, hebben een verhoogde kans op het ontwikkelen van een adenocarcinoom. Het doel van dit proefschrift was te onderzoeken of toepassing van biomarkers de risicostratificatie van patiënten met een Barrett slokdarm voor het ontwikkelen van een adenocarcinoom kan verbeteren. Tevens evalueren we het effect van surveillance op kosteneffectiviteit en overleving en is de waarde van biomarkers voor het voorspellen van prognose en therapie response in patiënten met een slokdarm adenocarinoom onderzocht. Vele immunohistochemische bioma