Search results for "LAB"
showing 10 items of 7932 documents
Double stimuli-responsive polysaccharide block copolymers as green macrosurfactants for near-infrared photodynamic therapy
2019
The NIR absorbing photosensitizer phthalocyanine zinc (PC(Zn)) was stabilized in aqueous media as water-dispersible nanoparticles with a reduction- and pH-responsive full polysaccharide block copolymer. A cellular uptake and also photo switchable intracellular activity of the cargo upon irradiation at wavelengths in the near infrared region were shown. The block copolymer was synthesized by applying a copper-free click strategy based on a thiol exchange reaction, creating an amphiphilic double-stimuli-responsive mixed disulfide. The dual-sensitive polysaccharide micelles represent a non-toxic and biodegradable green macrosurfactant for the delivery of phthalocyanine zinc. By encapsulation i…
Indonesian domestic workers in Singapore: strategies for increasing income and building up savings
2014
The following essay studies the strategies and practices applied by Indonesian domestic workers in Singapore in order to accumulate money. This is done by presenting the background situation, especially regarding female labor migration from Indonesia to other countries, and examining the specific income conditions experienced by domestic workers in Singapore. The particular focus of this essay is on gaining a deeper understanding of how the women act within a restrictive framework, i.e. identifying their legal and illegal strategies for increasing their regular income and their “negative” income strategies and transnational strategies for building up savings.
IL-4-mediated drug resistance in colon cancer stem cells
2008
Cancer stem cells are defined as cells able to both extensively self-renew and differentiate into progenitors. Cancer stem cells are thus likely to be responsible for maintaining or spreading a cancer, and may be the most relevant targets for cancer therapy. The CD133 glycoprotein was recently described as a reliable cancer stem-like cell marker in colon carcinoma. CD133+ cells are both necessary and sufficient to initiate tumour growth in animal models. The CD133+ cell population and spheroid cultures contain cells expressing the stem cell marker Musashi-1 which is involved in maintenance of stem cell fate in several tissues and importantly, this expression is maintained in stem-like cells…
Extended complex Kalman filter for sensorless control of an induction motor
2014
Abstract This paper deals with the design of an extended complex Kalman filter (ECKF) for estimating the state of an induction motor (IM) model, and for sensorless control of systems employing this type of motor as an actuator. A complex-valued model is adopted that simultaneously allows a simpler observability analysis of the system and a more effective state estimation. The observability analysis of this model is first performed by assuming that a third order ECKF has to be designed, by neglecting the mechanical equation of the IM model, which is a valid hypothesis when the motor is operated at constant rotor speed. It is shown that this analysis is more effective and easier than the one …
Soluciones analíticas en la industria: calidad, seguridad y conciencia ambiental
2017
La industria es uno de los principales motores de la economía mundial. Una de las ocupaciones y preocupaciones principales del sector industrial, es la salvaguarda de la calidad de las materias primas utilizadas, el control de los procesos y de las infraestructuras involucradas en la manufactura, la seguridad de los trabajadores durante las etapas de producción y las emisiones de residuos al medio ambiente, tanto gaseosos, como líquidos o sólidos. Por último, y no menos importante, la calidad del producto manufacturado, que es la cabeza visible para el consumidor y repercute de forma directa en el prestigio y economía de la industria en cuestión. En la mayoría de los casos, las metodologías…
Государство будущаго: производство и потребленiе въ соцiальномъ государствѣ
1906
Атлантикус - псевдоним К. Балодиса. Перевод с немецкого, под редакцией и с предисловием М.В. Бернацкого
Temperamentin arviointimenetelmien validiteetti : Infant Behavior Questionnaire -kyselyn validointi laboratoriohavaintojen avulla 6 kuukauden iässä
1998
Age-related changes of NADPH-diaphorase-positive neurons in the rat inferior colliculus and auditory cortex
2007
Nitric oxide (NO) has been implied in age-related changes of the central nervous system (CNS) and the central auditory pathway. The present study was conducted to investigate whether the number of NO-producing cells and their morphometric characteristics in the inferior colliculus (IC) and the auditory cortex (AC) are changed with the increasing age of the subjects. IC and AC sections of adult and senile Wistar rats were studied using the histochemical detection of NADPH-diaphorase activity (NADPH-d), a marker for neurons containing nitric oxide synthase (NOS). Our results showed a decreased area of the somas of NADPH-d-positive neurons in the dorsal cortex (DC) of the IC and a diffuse loss…
Repercusión emocional en el personal de enfermería pediátrica. Revisión
2019
Repercusión emocional en el personal de enfermería pediátrica. Revisión Para el personal de enfermería pediátrica, trabajar con niños/as requiere cierta connotación psicológica y emocional. Gestionándose de manera negativa, puede ser causa de sentimientos de impotencia, incertidumbre, tristeza y excesiva vinculación emocional; en caso de hacerlo de manera positiva, se observa una atención integral al paciente y su familia. La falta de herramientas de afrontamiento efectivo ante situaciones extremas en los pacientes, como la muerte, es causa de un manejo no efectivo de la salud.