نتایج جستجو برای: contamination factor
تعداد نتایج: 893730 فیلتر نتایج به سال:
The existence of non-random galaxy intrinsic ellipticity severely challenges precision cosmic shear measurement. We propose to self calibrate the induced gravitational shear-galaxy intrinsic ellipticity contamination (the GI correlation, Hirata & Seljak 2004) using extra information encoded in the same weak lensing survey. Besides the galaxy ellipticity-galaxy ellipticity correlation, the same ...
In this thesis, a regular hexagonal geometry with random deployment of users is considered in order to study the impact of pilot contamination for a more general scenario. Specifically, we study a conventional frequency reuse hexagonal geometry and derive the throughput of the network when multiple users are reusing the same pilots leading to pilot contamination problem. We restrict ourselves t...
Commercially available blood-collection tubes may be contaminated with endotoxin (315 +/- 95 pg/tube) and could therefore be unsuitable for blood collection for endotoxin measurement. Plasma separation and storage are a potential source of contamination. To avoid contamination and error, we have developed new blood collection tubes that contain heparin free of endotoxin (LPS) and a gel to separ...
Partitioning and source diagnostics of polycyclic aromatic hydrocarbons in rivers in Tianjin, China.
Water, suspended particulate matter (SPM), and sediment samples were collected from ten rivers in Tianjin and analyzed for 16 polycyclic aromatic hydrocarbons (PAHs), dissolved organic carbon (DOC), particulate organic carbon (POC) in SPM and total organic carbon (TOC) in sediment. The behavior and fate of PAHs influenced by these parameters were examined. Generally, organic carbon was the prim...
Mycoplasma haemofelis which is also called Haemobartonella felis is an infectious anemia factor (F.I.A) in cats. The clinical signs of the disease are different and it can be seen as acute, over acute and chronic. In some situations, the Mycoplasma haemofelis isn’t treated completely by tetracycline and the similar medications and the cat remains the bearer. Due to the fact that Mycoplasma haem...
Present study consists geochemical variations and spatial distribution of trace elements (Fe, Mn, Cr, Co, Cu, Ni, Pb and Zn) of the ocean floor sediments collected along the continental shelf off East coast Tamil Nadu (Chennai to Velanganni) during the 2009 southwest monsoon period. Results indicate sand dominance with abundant calcareous debris and shell fragments. Normalisation of trace metal...
the risk of disease spread through water, fruits and vegetables contaminated through unclean waters varies from region to another. springs and underground water resources are essentially free of germs or they have tolerable levels of germs; unless they are infected by surface water or human excreta. scientific reports have shown that outbreaks of food-borne illnesses especially foods such as fr...
در سال های اخیر، کاربرد مدل های هیدرولوژیکی توزیعی بر پایه فیزیکی افزایش یافته است. با این حال بسیاری از سوالات در خصوص واسنجی و صحت سنجی صحیح مدل های توزیعی و ارزیابی عدم قطعیت پارامترهای تخمینی، هنوز هم ناشناخته است. به خصوص برای مدل های پیچیده، تخمین پارامترها به طور صحیح، کاهش فضای پارامتری و استفاده از الگوریتم های موثر و کارآمد به منظور کاهش عدم قطعیت و تسهیل فرآیند واسنجی امری ضروریست. ه...
در این تحقیق به بررسی پارامترهای بیلان آب حوضه رودخانه آق چای در شمال استان آذربایجان غربی، با مساحت 1440.89 کیلومتر مربع پرداخته شده است. مدل سازی بارش-رواناب با گام زمانی روزانه و با استفاده از مدل نیمه توزیعی swat و بهینه سازی پارامترهای حوضه، بررسی عدم قطعیت مدل و پارامترها با برنامه swat-cup انجام گرفته است. کاربرد الگوریتم sufi-2 در بررسی عدم قطعیت نشان داد مقدار ضریب ناش برای دوره واسنج...
The interaction between plants and microorganisms, which is the driving force behind the decontamination of petroleum hydrocarbon (PHC) contamination in phytoremediation technology, is poorly understood. Here, we aimed at characterizing the variations between plant compartments in the microbiome of two willow cultivars growing in contaminated soils. A field experiment was set-up at a former pet...
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