Peptide platforms for metal ion sensing

Naturally occurring motifs have been redesigned to product fluorescent peptidyl-chemosensors that sensitively and selectively recognize Cu(II) or Fe(III). The modular nature of peptide architecture allows preparation and evaluation of potential sensors on solid supports

Parent-Teacher Relationships of Students Diagnosed With Autism, Job Burnout, and Stress as Predictors of Teacher Self-Efficacy

Excessive workload, personal stress, and a lack of resources are some of the factors that contribute to teacher stress and burnout. One third of new teachers quit the teaching profession within their first 3 years, half leaving within 5 years, and 10% quitting every year after that. Research has identified a relationship between work stress and burnout among teachers. However, this relationship has not been explored among teachers who have students diagnosed with autism in their classrooms. The purpose of this study was to examine the relationship between teacher job-related stress, burnout, quality of parent-teacher relationships, and teacher self-efficacy among teachers who have students diagnosed with autism in their classrooms. Bandura’s social learning theory was used to guide this research. A convenience sample of 221 secondary education teachers identified through Facebook groups completed an online survey. Multiple regression analyses showed that higher levels of personal accomplishment predicted higher levels of teacher self-efficacy. Higher levels of emotional exhaustion predicted lower levels of teacher self-efficacy. Higher levels of perceived negative interactions with students predicted lower levels of teacher self-efficacy. The results may be used for positive social change by developing strategies to increase positive interactions between teachers and students and acknowledging personal accomplishments of teachers. Administrators and stakeholders may find these strategies reduce levels of burnout and increase self-efficacy of teachers

Konsep Sistem Informasi Manajemen Dakwah (Tahapan Simdak, Ruang Lingkup Simdak, Perkembangan Simdak)

Konsep Sistem Informasi Manajemen Dakwah merupakan suatu upaya untuk mengelola informasi yang berkaitan dengan dakwah secara terstruktur dan sistematis. Sistem informasi manajemen dakwah meliputi tahapan pengumpulan data, pengolahan data, analisis data, dan pengambilan keputusan. Ruang lingkup dari sistem informasi manajemen dakwah mencakup berbagai aspek dakwah seperti pendidikan, kesehatan, sosial, dan ekonomi. Penelitian ini bertujuan untuk menganalisis konsep sistem informasi manajemen dakwah yang meliputi tahapan, ruang lingkup, dan perkembangan Simdak. Permasalahan yang muncul adalah bagaimana mengembangkan sistem informasi manajemen dakwah yang efektif dan efisien dalam pengelolaan data dakwah. Metode yang digunakan dalam penelitian ini adalah studi literatur dan analisis data. Dalam penelitian ini, penulis menggunakan beberapa sumber terpercaya seperti jurnal, buku, dan sumber-sumber online yang relevan dengan topik yang dibahas. Dari hasil penelitian ini, dapat disimpulkan bahwa Melalui pengembangan sistem informasi manajemen dakwah yang efektif dan efisien, diharapkan dapat memudahkan pengelolaan data dakwah dan membantu dalam pengambilan keputusan yang lebih baik

Peptide platforms for metal ion sensing

Naturally occurring motifs have been redesigned to product fluorescent peptidyl-chemosensors that sensitively and selectively recognize Cu(II) or Fe(III). The modular nature of peptide architecture allows preparation and evaluation of potential sensors on solid supports

La dépression avec symptômes psychotiques de l'adulte et ses relations avec la culture et les troubles de la personnalité

POITIERS-BU Médecine pharmacie (861942103) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Does the Sauerbrey equation hold true for binding of peptides and globular proteins to a QCM? A systematic study of mass dependence of peptide and protein binding with a piezoelectric sensor

The term ‘microbalance’ arose after Sauerbrey showed a mass per unit area dependence on sensor frequency change for thin, solid films on a QCM. Others have extrapolated this relationship to interactions with biological ‘soft’ matter using acoustic wave devices. We rigorously examined the relationship between QCM frequency change and the molecular weight of protein and peptide analytes on a RAP♦id 4™ system using more than 120 individual assays. A series of amino acid, peptides and proteins with molecular weight from 372 to 150,000\ua0Da constituting a molecular weight ladder were biotinylated with a target biotin/protein ratio close to one to minimize avidity effects. Analyte concentration and contact time were chosen so as to attain near saturation of an anti-biotin antibody surface. The series resistance and resonant frequency changes (dF and dR) arising from a 5-parameter fit of the imaginary component of the impedance signal were analysed, giving a linear relationship (R\ua0=\ua00.98) between frequency response and analyte molecular weight, even down to level of a single amino-acid. As predicted by theory, there was also a linear relationship between the changes in density and viscosity of the liquid in contact with the sensor and both dF and dR. The resistance and resonance frequency changes recorded for mixtures of deuterium oxide and glycerol were the sum of changes induced by each individual liquid. Hence the Sauerbrey equation for mass per unit area dependence of QCM signal does hold true for peptides and proteins in a liquid

Written mathematical communication : which aspects are assessed, how are the aspects valued and what type of feedback is given by teachers in grades 7-9

Bedömningen i matematik på högstadiet omfattar en mängd kunskapskrav, ett av dessa är elevernas kommunikationsförmåga. Syftet med denna undersökning är att ta reda på vilka aspekter av elevernas skriftliga kommunikation som lärarna riktar sin uppmärksamhet mot och hur de värderar dessa aspekter men också vilken typ av återkoppling de ger till eleverna. Studien är en explorativ kvalitativ undersökning där datan togs fram genom intervjuer inspirerade av repertory grid tekniken. Lärarna i intervjuerna fick bedöma olika elevlösningar samt göra jämförelser mellan dem för att hitta aspekter lärarna tittar på när det kommer till den skriftliga kommunikationen. De fick också ge förslag på återkoppling till de lösningar de ansåg var minst bra och bäst. Med hjälp av en tematisk analys fick jag fram resultatet att lärarna främst riktar uppmärksamheten mot hur eleverna motiverar sina lösningar. Användningen av bilder, det textbaserade språket och det matematiska språket, vilket är användandet av numeriska beräkningar och formler, var viktiga aspekter när det kom till motiveringarna. I denna undersökning var användandet av bilder centralt, men bilderna skulle gärna kombineras med antingen textbaserat språk eller matematiskt språk. Lärarna uppmärksammade också lösningarnas struktur, vilken de ansåg vara underordnad elevernas motiveringar. Återkopplingen de gav var på uppgiftsnivå men också till stor del på processnivå och formulerades i form av beröm, krav, önskemål eller som frågor