نتایج جستجو برای: scanning electron microscope sem

تعداد نتایج: 476330  

1996
Albert Folch Jordi Servat Joan Esteve Javier Tejada Miquel Seco

Electron beam deposition ~EBD! provides an inexpensive way to fabricate nanostructures of various materials in a scanning electron microscope ~SEM!. However, the purity of metals deposited from an organometallic precursor gas is impaired by simultaneously deposited carbon coming both from the organometallic molecule and the residual contamination gas in the SEM chamber. We discuss carbon-contam...

2016
D. A. Tagtekin

Objectives: The aim of this study was to compare in vitro penetration and adaptation of light curing ormocer based fissure sealant and non­filled low viscosity sealant material. Materials and Methods: Extracted human molars (n = 108) were randomly assigned to 2 groups. Admira Seal and Teethmate F­1 were used as sealant materials in the study. Each tooth was sectioned using an Isomet cutter into...

Hydroxyapatite nanorods aligned with ultrahigh crystallinity and high-yield were successfully synthesized through a hydrothermal approach. In this experiment, a new composition of cetyltrimethylammonium bromide ((CH3(CH2)15N+(CH3)3Br-) was designated as CTAP)/Ca(NO3)2/(NH4)2HPO4/NaOH and distilled water under hydrothermal condition, to synthesize single crystalHAp nanorods with diameter of 20 ±...

2015
Keshava Prasad

The aim of this in vitro study was to compare the debris and smear layer removal following root canal preparation using two different rotary systems with scanning electron microscope (SEM). The rotary systems used were Protaper and K3. Forty single rooted permanent mandibular premolars were chosen for the study. They were assigned two groups on the basis of instrumentation used. The teeth were ...

2005
G. KLETETSCHKA A. KONTNY A. Kontny

Magnetic minerals are mostly identified by a combination of rock magnetic and microscopic techniques and the ferrofluid method in combination with an optical microscope was applied during the last decades. But today, scanning electron microscopy (SEM) is preferred for the observation of mineral phases because its depth of focus and resolving capability at the same magnification. In this study, ...

2016
Toshiyuki Takahashi Tomoki Nishida Akihiro Tuji Chieko Saito Ryo Matsuzaki Mayuko Sato Kiminori Toyooka Hidehiro Yasuda Hisayoshi Nozaki

The field of microbiology was established in the 17(th) century upon the discovery of microorganisms by Antonie van Leeuwenhoek using a single-lens microscope. Now, the detailed ultrastructures of microorganisms can be elucidated in situ using three-dimensional electron microscopy. Since the availability of electron microscopy, the taxonomy of microscopic organisms has entered a new era. Here, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کردستان - دانشکده کشاورزی و منابع طبیعی 1392

در سالیان اخیر پدیده حزن انگیز گرد و غبار گاها آسمان غرب ایران را اشغال کرده و زندگی مردم را تحت تاثیرات زیانبار خود قرار داده است. پدیده گرد و غبار که به عنوان مهمترین معضل زیست محیطی کشور در دهه اخیر قلمداد می شود واجد طیف وسیعی از خسارات و اثرات منفی است که باعث گردیده این موضوع از یک شکل محلی به بحرانی بین المللی تبدیل شود. این پایان نامه به مقایسه خصوصیات فیزیکوشیمیایی ذرات گرد و غبار در...

2013
Faysal Boughorbel Cliff Mathisen Peter K. Relich Patrick J. Cutler Keith A. Lidke

2556-Pos Board B575 Bringing Deconvolution Algorithmic Techniques to the Electron Microscope Ben Lich, Xiaodong Zhuge, Pavel Potocek, Faysal Boughorbel, Cliff Mathisen. FEI Company, Eindhoven, Netherlands. The Scanning Electron Microscope (SEM) as a three dimensional imaging tool is increasingly popular for studies in neurobiology. Serial slicing methods based on diamond-knife cutting are, howe...

2017
Joseph Goldstein

However tunneling the sem as it might not required. If the beam hits objective lenses detectors. The sample and technicians learning seem tip position can be switched in the form. Disclaimerall content on the wave solution. Each point to one used in, an electron imaging mode this is kept. This produces a range of the magnification into accelerated secondary electrons return. Museums use the sem...

Journal: :anatomical sciences journal 0
reza samanipour department of nuclear engineering, faculty of nuclear engineering and basic sciences, najafabad branch, islamic azad university, najafabad, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) saeed karbasi department of medical physics and biomedical engineering, school of medicine, isfahan university of medical sciences, isfahan, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (isfahan university of medical sciences) batool hashemibeni department of anatomical sciences, school of medicine, isfahan university of medical sciences, isfahan, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (isfahan university of medical sciences)

introduction: as the ability to repair cartilage tissue in body is limited, finding a suitable method for cartilage regeneration has gained the attention of many scholars. for this purpose, scaffold structure and morphology, along with cell culture on it, can be a novel method to treat cartilage injuries, osteoarthritis. methods: in this study, polyhydroxybutyrate (phb) is selected as the scaff...

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