نتایج جستجو برای: used cigarette filter ash
تعداد نتایج: 2372269 فیلتر نتایج به سال:
Neural development is generally marked by an increase in the efficiency and diversity of neural processes. In a large sample (n = 114) of human children and adults with ages ranging from 5 to 44 yr, we investigated the neural responses to naturalistic video stimuli. Videos from both real-life classroom settings and Hollywood feature films were used to probe different aspects of attention and en...
The purpose of these videos is to teach students the basic cognitive principles they need to understand in order to become effective learners. The lack of adequate preparation of high school graduates for college level work is of tremendous concern. In 2011, only 25% of high school seniors met all four ACT College Readiness Benchmarks in math, science, English, and reading. That means a large p...
The demand for employees trained in science, technology, engineering, and mathematics (STEM) fields continues to increase, yet the number of Millennial students pursuing STEM is not keeping pace. We evaluated whether this shortfall is associated with Millennials' preference for flexibility and work/life-interaction in their careers-a preference that may be inconsistent with the traditional idea...
?Welcome to the course page for Business Development for Life Scientists This content is designed provide an overview of the business development process. Topics include the business development process of how to grow or expand a business by identifying gaps and ways to fill them. The goal of this workshop is to help prepare scientists who want to start their own labs, and inform scientists who...
Concern has been expressed about the use of e-cigarettes among young people. Our study reported e-cigarette and tobacco cigarette ever and regular use among 11-16 year olds across the UK. Data came from five large scale surveys with different designs and sampling strategies conducted between 2015 and 2017: The Youth Tobacco Policy Survey; the Schools Health Research Network Wales survey; two Ac...
In this study, concentrations of Cd, Ni, Pb, and Cr were determined in tobacco, tobacco smoke-condensate, and cigarette ash for selected brands used in Pakistan. Smoking apparatus was designed for metal extraction from cigarette smoke. Samples were digested through microwave digester and then analyzed by flame atomic absorption spectrophotometer (FAAS). Higher concentration of Ni was detected i...
In the field of security automated surveillance systems are very useful. Surveillance system can be used to detect and track the moving objects. First phase of the system is to detect the moving objects in the video. Second phase of the system will track the detected object. In this paper, detection of the moving object has been done using simple background subtraction and tracking of single mo...
Chloride content is a critical problem for the reuse of fly ash as a raw material in cement, and the method used by recyclers to reduce the fly ash chloride content depends on the chemical form of the chlorides. However, limited information is available on the quantitative distribution of chlorides and the identity of some chlorides such as Friedel's salt. We examined chloride forms and percent...
In this paper we present findings from a study of students' use of mobile phones in a biology course at the Norwegian University of Science and Technology (NTNU). Using a qualitative research approach we focus on how mobile phones can complement and add value to the educational challenge of encouraging university students to obtain some topic knowledge prior to their lectures. In the course mat...
A needle trap sampler (NTS) packed with 60–80-mesh divinylbenzene (DVB) adsorbent inside a 22-gauge stainless steel was used as micro sampling device to extract chemical compounds in electronic cigarette (e-cigarette) aerosol. The samples were then analyzed using gas chromatography (GC)-mass spectroscopy (MS) determine the constituents. Based on experimental results, e-cigarette smokers are exp...
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