A5073236806- Advanced X-ray Imaging Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced Electron Microscopy Techniques and Applications
- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Trypanosoma species research and implications
- Cardiac Imaging and Diagnostics
- Bone health and osteoporosis research
- Phytoplasmas and Hemiptera pathogens
- Bone health and treatments
- Dental materials and restorations
- Insect and Pesticide Research
- VLSI and FPGA Design Techniques
- Women's cancer prevention and management
- Insect behavior and control techniques
- Endodontics and Root Canal Treatments
- Research on Leishmaniasis Studies
- Healthcare Systems and Public Health
- Additive Manufacturing and 3D Printing Technologies
- Head and Neck Cancer Studies
- Algorithms and Data Compression
- VLSI and Analog Circuit Testing
- Molecular Biology Techniques and Applications
- Physiological and biochemical adaptations
- Migration, Racism, and Human Rights
Universidade Federal do Rio de Janeiro
2014-2023
Universidade do Estado do Rio de Janeiro
2020-2023
Nuclear Engineering Institute
2019
Universidade Estadual de Maringá
2017
An improved understanding of an ovary's structures is highly desirable to support advances in folliculogenesis knowledge and reproductive medicine, with particular attention fertility preservation options for prepubertal girls malignant tumors. Although currently the golden standard structural analysis provided by combining histological sections, staining, visible 2D microscopic inspection, synchrotron radiation phase-contrast microtomography becoming a new challenge three-dimensional...
Phase Contrast X-Ray Synchroton Microtomography is a non-destructive technique that allows the microanatomical investigations of Rhodnius prolixus, one most important insect vectors Trypanosoma cruzi. In this work complete series virtual thin sections through heads selected prolixus were obtained. The head to compare difference in use spatial resolution 2 μm or 4.5 and see anatomical details couldn't be seen with other technique. Three different groups used. One group was fed defibrinated...
Laboratory and synchrotron X-ray tomography are powerful tools for non-invasive studies of biological samples at micrometric resolution. In particular, the development phase contrast imaging is enabling visualization sample details with a small range attenuation coefficients, thus allowing in-depth analyses anatomical histological structures. Reproductive medicine starting to profit from these techniques, mainly applied animal models. This study reports first human ovarian tissue where...
dx.doi.org/ 10.7437/NT2236-7640 / 2011.02.004 Esta nota técnica consiste no estudo dos principais geradores de números aleatórios existentes. Nela, foi feita uma análise métodos utilizados por cada gerador e o período das sequências que serão geradas eles. Neste trabalho também são citados dois testes podem ser usados para verificar a qualidade gerador.
This study assessed the influence of pH variation on volumetric change EndoSequence BC Sealer compared to AH Plus Jet. Eighteen single-rooted teeth were uniformly prepared and filled with one sealers. After 24-h storing, samples scanned in a micro-CT device. Then, roots immersed 20 ml phosphate-buffered saline (PBS) 5, 7 or 12 at 37°C for 30 days rescanned. Statistical analysis was performed using Shapiro-Wilk's test, one-way ANOVA Tukey's Student's t-tests (p < 0.05). Differences between...
Abstract Amphibians are models for studying applied ecological issues such as habitat loss, pollution, disease, and global climate change due to their sensitivity vulnerability changes in the environment. Developmental series of amphibians informative about biology, X-ray based 3D reconstruction holds promise quantifying morphological during growth—some with a direct impact on possibility an experimental investigation several topics listed above. However, resolution discrimination soft...
Synchrotron radiation phase-contrast microtomography (SR-PHC-CT) has become an important tool in studies of insects, mainly Rhodinius prolixus, the insect vector Chagas disease. A previous work shown that SR-PHC-CT is excellent technique about ecdysis process R.prolixus head. The term refers to set behaviors by which extracts itself from old exoskeleton. exoskeleton formation indispensable for evolutionary success species, so failure complete will, most cases result death, making this target...
Tissue engineering has been shown to offer promising approaches for bone regeneration, mostly based on replacement with biomaterials that provide specific environments and support growth. In this context, we previously showed mesenchymal stem cells (MSCs) their derivatives, such as conditioned medium (CM) extracellular vesicles (EV), when seeded collagen membranes (COL) or polylactide (PLA) biomaterials, are able favor tissue especially evidenced in animal model calvary defects. the present...
Chagas’ disease, also called American trypanosomiasis, is a human tropical which endemic in large areas of South and Central America. Rhodnius prolixus the most important insect vector Trypanosoma cruzi, etiologic agent disease. Studies have shown that microcomputed tomography (microCT) provides an excellent tool for 3D reconstruction head. Although this approach can produce finely resolved images internal morphology insects, improvement contrast between low density tissues somehow necessary...
Breast cancer (BC) is the most frequent and leading cause of cancer-related mortality in women. The treatment techniques for BC include chemotherapy (CT) and/or radiotherapy (RT) can modify elementary cell matrix by calcificating tissues due to biological morphological changes. Also, treatments induce cardiotoxicity it important understand mechanisms involved order prevent this late effect treated breast patients. high incidence cardiovascular patients partially credited increased intimal...
According to recent medical literature, there was an increase in the prevalence of esophageal squamous cell carcinoma Brazilian population, a fact that raised questions about factors influence development this type carcinoma, as well best therapeutic approaches these cases. In sense, following review article and case report aims analyze main risk conditions approach used presented, comparing its effectiveness with those presented literary references. We analyzed 15 literature articles,...
To determine the effects of different polychemotherapy drugs on cortical bone structure, femur diaphysis rats were treated with two chemotherapy drugs, AC (doxorubicin + cyclophosphamide) and TC (docetaxel cyclophosphamide), evaluated by 3D morphological analysis using synchrotron radiation microtomography.Wistar classified into three groups. One group received doses docetaxel cyclophosphamide (G1) - regimen; a second doxorubicin (G2) while control (G0) no further treatment. tomographic...
Hypertension is one of the major public health problems worldwide. It can cause severely alterations in artery structure and function such as vascular remodeling. Angiotensin II (Ang II) has been linked to dysfunction. shown that blockade Ang type 1 receptor with an blocker (ARBs) may reverse pathology independently blood pressure lowering. There therefore a special interest establishing whether antihypertensive treatment correct part or completely structural functional arteries. Several...
In recent years, new techniques have been developed for the analysis of bone matrix. Two most common technologies that make use X‐rays are X‐ray microfluorescence (μXRF) and absorption microtomography (μCT). μXRF is a powerful analytical tool spectroscopic determination almost all elements ( Z > 13) present in sample. μCT nondestructive technique, which can be used to create cross sections complex objects. this work, both were applied bones evaluate possible structural elemental...
3D printing technology has an important role at the study animal anatomy, and, for a long time, scientists have been searched techniques that allow to create accurate replicas of plants and specimens. In this work it was developed methodology print insects using X-Ray synchrotron microtomography. The insect chosen Rhodnius prolixus, hematophagous Hemiptera traditionally used as model studies physiology, vector control strategies parasite-vector interactions. results obtained from showed...
Abstract Radiotherapy (RT) plays a pivotal role in the treatment of breast cancer (BC) and various thoracic malignancies. Radiation induced heart disease (RIHD) is one such long term toxicity which can offset improvement specific mortality. Long normal tissue becoming bigger concern, as early diagnosis these cancers has led to patients surviving longer. Our research group on Physics applied biomedical sciences been investigating side effects BC (RT chemotherapy) for more than ten years. The...
In the last years, microtomography has proved to be a powerful technique on insects' studies, allowing detailed view of structures' internal with high resolution. One most important advantages about use in these studies is fact that dissection not necessary, which decreases considerably number samples used research. Some insects are constantly morphology, metamorphosis, and reproduction, because they work as model for others, Rhodnius prolixus one studied this group. This insect also main...