نتایج جستجو برای: cvd method
تعداد نتایج: 1645330 فیلتر نتایج به سال:
We report a CVD hexagonal boron nitride (hBN-) assisted transfer method that enables a polymer-impurity free transfer process and subsequent top encapsulation of large-area CVD-grown graphene. We demonstrate that the CVD hBN layer that is utilized in this transfer technique acts as a buffer layer between the graphene film and supporting polymer layer. We show that the resulting graphene layers ...
Carbon nanotubes (CNTs), nowadays, are one of the important nanomaterials that can be produce with different methods such as chemical vapor deposition (CVD). Growing of CNTs via CVD method can be influenced by several operating parameters that can affect their quality and quantity. In this article, the effects of inlet gas mixture temperature on CNT’s local growth rate, total production, and le...
in this study un-doped and eu-doped zno nanorods and microrads were fabricated by chemical vapor deposition (cvd) method. the effects of annealing, synthesis temperature and structure on structural and photoluminescence properties of eu-doped zno samples were studied in detail. prepared samples were characterized using x-ray diffraction (xrd), scanning electron microscopy (sem), particle size a...
Objective(s) Oxidized low-density lipoproteins (ox-LDLs) appear to play a significant role in atherogenesis. In fact, circulating ox-LDL concentrations have been recognized as a risk factor for cardiovascular disease (CVD). The main objectives of this study were to assess the effects of antioxidant vitamins on ox-LDL as a biomarker of CVD in male subjects with CVD risk factors. Materials and ...
Background: we investigated the association of different hypertension subgroups including isolated systolic hypertension (ISH), isolated diastolic hypertension (IDH), systolic-diastolic hypertension (SDH), controlled blood pressure (CBP), and uncontrolled blood pressure (UBP) for incident CVD and mortality events. Methods: 6974 middle age and 882 elderly participants were categorized accordi...
مقدمه: بروز ﺑﻴﻤﺎری های قلبی- عروقی (cvd) در حضور و عدم حضور سندرم متابوﻟﻴﻚ و اختلال قند خون به صورت مستقل از هم، در ﻳﻚ مطالعه آﻳﻨﺪه نگر، طی7/6سال مورد ارزﻳﺎبی قرار گرفت. روش ها: در ﻳﻚ ﺟﻤﻌﻴﺖ اﻳﺮانی، ٤٠۱۸ فرد≥٤٠ سال بدون سابقه cvd وارد مطالعه و به منظور ﺗﻌﻴﻴﻦ وقاﻳﻊ جدﻳﺪ cvd مورد بررسی قرار گرفتند. ﻣﻴﺰان بروز و خطر نسبی (hr) با توجه به حضور ﻳﺎ عدم حضور سندرم متابوﻟﻴﻚ و اختلال قند خون واجزای آن ﺗﻌ...
carbon nanotubes (cnts), nowadays, are one of the important nanomaterials that can be produce with different methods such as chemical vapor deposition (cvd). growing of cnts via cvd method can be influenced by several operating parameters that can affect their quality and quantity. in this article, the effects of inlet gas mixture temperature on cnt’s local growth rate, total production, and le...
objective(s) oxidized low-density lipoproteins (ox-ldls) appear to play a significant role in atherogenesis. in fact, circulating ox-ldl concentrations have been recognized as a risk factor for cardiovascular disease (cvd). the main objectives of this study were to assess the effects of antioxidant vitamins on ox-ldl as a biomarker of cvd in male subjects with cvd risk factors. materials and me...
Chemical Vapor Deposition (CVD) is one of the most important methods for producing Carbon Nanotubes (CNTs). In this research, a numerical model, based on finite volume method, is investigated. The applied method solves the conservation of mass, momentum, energy and species transport equations with aid of ideal gas law. Using this model, the growth rate and thickness uniformity of produced CNTs,...
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