Monthly Archives: October 2020
Anatomic variation of the nasopalatine canal among dentate, partially edentulous and completely edentulous subjects
The rehabilitation of the upper central incisors with the use of implants is one of the most complex aesthetic challenges. The anterior sector has important anatomical implications: resorption of the alveolar bone and the nasopalatine duct (NPD),
Chemoselective Intramolecular carbene C-H insertions of 2-diazo-2-sulfamoylacetamides
The transition-metal-catalyzed intramolecularly aliphatic and aromatic C-H insertions of diazo amides provide useful and important transformations to efficiently synthesize nitrogen-containing heterocycles with the new generated C-C bond. The reactivity of different diazoamide derivatives has been well studied
Non-local deformation sensing in nanoscale
Nanoindentation and pico-indentation based on atomic force microscopy (AFM) are commonly used for the evaluation of material mechanical properties using the depth-loading profile measured at a specific location of the material. However, the interpretation of the measurement
Sustainable ZnSnO3 nanowires produced by a low-cost solution process
Oxide materials, and more specifically, multicomponent oxide materials, have been widely explored in thin-film technology, being the indium-based materials very common. For example, conductive indium-tin oxide (ITO) or semiconductive indium-gallium-zinc oxide (IGZO) are key-materials in billion-dollar industries
Particularly harmful particles? Sifting out the dirt to find the microplastic effect
Research on microplastic effects in aquatic environments has expanded dramatically in the last decade. However, many important questions remain largely unanswered. We still do not know, for example, what are the safe levels of microplastic in different
The anterolateral ligament of the knee – an anatomical phantom
In 1879, Paul Segond published an article on clinically present and experimentally created bloody effusions in sprained knee joints. As an associated aggravation, he reported the formation of comminuted fractures of the lateral tibial condyle caused by
Antibiotic tolerance in bacteria: how to regain susceptibility?
Bacteria use a plethora of mechanisms to evade killing by antibiotics. Resistance is the best documented mechanism. Here, genetic changes in the bacterial DNA result in antibiotic insensitivity. As a consequence, resistant bacteria are able to grow
miRNA, the inconspicuous but key player in the development of cervical cancer
Cervical cancer is among the top three cancers affecting women below 45 years in several countries. Both the alterations and modification in deoxyribonucleic acid (DNA) sequences play a critical role in the onset and progression of cervical
Measuring the pH levels inside lysosomes
The pH level varies in different organelles inside a cell and there is a diversity of function carried out within. Any deviations of pH from normal levels could signal cellular stress or dysfunction and may indicate serious
Nonsense-mediated mRNA decay (NMD): a bifunctional mechanism in human physiology and disease
Proteins are the working-units of the cell, which are encoded by thousands of genes that pass their information into an intermediate molecule, the messenger RNA (mRNA). For this flow of information – from genes to RNA (transcription),
Analysis of the arabidopsis Major Facilitator Superfamily reveals a larger and more diverse group of transporters
As sessile organisms, plants need to adapt rapidly to the environmental fluctuations they endure during their life cycle in order to survive. Upon external insults, plants activate a network of coordinated molecular responses to restore cellular equilibrium,
Preparedness rising from the ashes of disaster: The phoenix of transformative learning
Worldwide, societies and their citizens face ever-increasing risk from natural disasters. Pivotal to managing this risk is preparedness. However, consistently low levels of preparedness prompted the United Nations International Strategy for Disaster Reduction (UNISDR) to call for
3D-bioengineered human amniotic membrane scaffold for improvement of wound healing in diabetic rats
In the tissue engineering context, attention to the biological scaffolds due to the safety, efficacy, and bio-mimicity was discussed. Among the natural scaffolds, human amniotic membrane (HAM) has shown to be promising and has been used for
The type of mitochondrial DNA mutations more than their quantity affects organismal fitness
Present in the majority of cells, mitochondria play a major role in the production of cellular and organismal energy, and contribute to cellular/ion homeostasis. Mitochondria possess multiple copies of their own genome (mtDNA), that encodes 13 essential
Soccer and metabolism: what are the limits of using saliva to understand the body responses?
Science is playing an increasingly important role in the world of sport. Understanding the molecular basis that relates to the degree of training, athletic performance or risk of injury can represent a major advance in ensuring the
Site-specific antibody labeling with novel photocrosslinking technology
Our research presents a novel, site-specific approach to labeling antibodies with molecules for various applications, improving upon traditional methods of antibody conjugation. The method is widely compatible and modular, enabling labs to rapidly label their antibodies for
Someone with higher risk: Seeing through Chinese gamblers based on gambling forms
Gambling in various forms has been an important economic activity around the world. Governments are trying to balance the economic benefits of legalized gambling with its social costs. However, measuring, identifying, and preventing gambling disorder remain a
Force and morphogenesis
Plant tissue culture has been used to propagate plants on culture media present within petri dishes. This is the propagation of plants in vitro. Using particular plant hormones added to such media in certain concentrations, buds and
Calix[4]arene can recognize metals captured in the cavity by IR absorption
![AoS. Calix[4]arene can recognize metals captured in the cavity by IR absorption.](https://atlasofscience.org/wp-content/uploads/2020/10/cone-shaped-C4A-AoS-t-150x150.jpg)
Calix[4]arene (C4A), composed of four phenols connected with methylene chains, has been used extensively as host molecules in supramolecular chemistry. C4A has a dominant, cone-type conformation formed by a strong hydrogen-bonded network with four OH groups (Fig.
