نتایج جستجو برای: dots strategy
تعداد نتایج: 369482 فیلتر نتایج به سال:
Quantum dots embedded within nanowires represent one of the most promising technologies for applications in quantum photonics. Whereas the top-down fabrication of such structures remains a technological challenge, their bottom-up fabrication through self-assembly is a potentially more powerful strategy. However, present approaches often yield quantum dots with large optical linewidths, making r...
The use of quantum dots (QDots) as bright and photostable probes for long-term fluorescence imaging is gaining more interest. Thus far, (pre)clinical use of QDots remains limited, which is primarily caused by the potential toxicity of QDots. Most QDots consist of Cd2+ ions, which are known to cause high levels of toxicity. Therefore, the cytotoxic effects of CdSe quantum dots on embryonic devel...
In this research, CdS and PbS quantum dots were applied as the light sensitizers in TiO2 based nanostructured solar cells. The PbS quantum dots could absorb a wide range of the sunlight spectrum on earth due to their low bandgap energy. As a result, the cell sensitization is more effective by application of both CdS and PbS quantum dots sensitizers. The TiO2 nanocrystals were synthesized throug...
Identifying minor amounts of explosives with sensitivity, selectivity, accuracy and speed can be a great advantage for applications related to national security and environmental monitoring.Unfortunately, identification with high reliability of explosives is still a challenge and is largely unfulfilled. Today, fluorescence-based methods are widely used to detect explosives and products derived ...
In the early 1990s, WHO declared TB a global emergency [1]. Since that time after introduction of DOTS strategy and National TB Programs, the reduction of global incidence rate (2002), as well as of total number of TB cases (2006) were recorded. However, in 2012, about 8.6 million cases were established, of which only two third were registered. It means that 3 million cases were missed and untr...
مقدمه و هدف: در جهان حدود 1.3 میلیارد نفر به میکروب سل آلوده اند. ارتباط تنگاتنگی بین کیفیت برنامه درمانی سل و میزان مقاومت به داروها وجود دارد. افزایش شیوع مجدد سل و نیز افزایش موارد سل مقاوم به چند دارو، سازمان بهداشت جهانی را بر آن داشت تا درمان استاندارد کوتاه مدت تحت نظارت مستقیم یا راهکار DOTS را پیشنهاد نماید. این پژوهش یک مطالعه کوهورت می باشد که به منظور بررسی یافته های اپیدمیولوژیک، ب...
The objective of this study was to compare the costs and outcomes associated with guardiansupervised directly observed treatment relative to the standard of care Directly Observed Therapy, Short Course (DOTS) provided by community health workers (CHW). New cases of culturepositive pulmonary tuberculosis (TB) treated in Vitória, Espírito Santo State, Brazil, between January 2005 and December 200...
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