Electrostatically Coupled MEM Oscillators

2000 ◽  
Author(s):  
Rajashree Baskaran ◽  
Kimberly L. Turner
Keyword(s):  
System Dynamics ◽  
Electromechanical Interaction ◽  
Wide Range ◽  
Potential Applications

Abstract MicroElectroMechanical (MEM) Oscillators have a wide range of potential applications and understanding the underlying system dynamics thoroughly is essential. In this paper, we present the design, modeling and characterization of a pair of electrostatically coupled torsional oscillators fabricated with the SCREAM(1) process. The dynamic and electrostatic characteristics of the new design lead to various applications and also serve as an interesting ground for understanding the electromechanical interaction and non-linearities in MEM devices.

Prospects of Emerging Engineered oxide nanomaterials and their Applications

2016 ◽  
Vol 66 (4) ◽  
pp. 323 ◽  
Author(s):  
Jitendra Gangwar ◽  
Bipin Kumar Gupta ◽  
Avanish Kumar Srivastava
Keyword(s):  
Recent Progress ◽  
State Of The Art ◽  
Vanadium Oxides ◽  
Review Article ◽  
Synthesis And Characterization ◽  
Oxide Materials ◽  
Wide Range ◽  
Fundamental Understanding ◽  
Potential Applications

<p>This review article mainly focused on the recent progress on the synthesis and characterization of emerging artificially engineered nanostructures of oxide materials as well as their potential applications. A fundamental understanding about the state-of-the-art of the synthesis for different size, shape and morphology, which can be tuned to the desired properties of oxide nanomaterials have discussed in details in this review. The present review covers the a wide range of artificially engineered oxide nanomaterials such as cadmium-, cupric-, nickel-, magnesium-, zinc-, titanium-, tin-, aluminium-, and vanadium-oxides and their useful applications in sensors, optical displays, nanofluids and defence.</p>

A review on the role of artificial intelligence in stem cell therapy: An initiative for modern medicines

2020 ◽  
Vol 21 ◽  
Author(s):  
Pravin Shende ◽  
Nikita P. Devlekar
Keyword(s):  
Artificial Intelligence ◽  
Individual Cell ◽  
Home Automation ◽  
Science And Engineering ◽  
Prediction Of Mortality ◽  
Wide Range ◽  
Potential Applications ◽  
Applications Of Ai

: Stem cells (SCs) show a wide range of applications in the treatment of numerous diseases including neurodegenerative diseases, diabetes, cardiovascular diseases, cancer, etc. SC related research has gained popularity owing to the unique characteristics of self-renewal and differentiation. Artificial intelligence (AI), an emerging field of computer science and engineering has shown potential applications in different fields like robotics, agriculture, home automation, healthcare, banking, and transportation since its invention. This review aims to describe the various applications of AI in SC biology including understanding the behavior of SCs, recognizing individual cell type before undergoing differentiation, characterization of SCs using mathematical models and prediction of mortality risk associated with SC transplantation. This review emphasizes the role of neural networks in SC biology and further elucidates the concepts of machine learning and deep learning and their applications in SC research.

scholarly journals A Sequential Statistical Approach towards an Optimized Production of a Broad Spectrum Bacteriocin Substance from a Soil BacteriumBacillussp. YAS 1 Strain

2014 ◽  
Vol 2014 ◽  
pp. 1-16 ◽  
Author(s):  
Amira M. Embaby ◽  
Yasmin Heshmat ◽  
Ahmed Hussein ◽  
Heba S. Marey
Keyword(s):  
Antimicrobial Activity ◽  
Staphylococcus Epidermidis ◽  
Statistical Approach ◽  
Wide Spectrum ◽  
Enterobacter Aerogenes ◽  
Lactobacillus Bulgaricus ◽  
Human Pathogens ◽  
Wide Range ◽  
Potential Applications

Bacteriocins, ribosomally synthesized antimicrobial peptides, display potential applications in agriculture, medicine, and industry. The present study highlights integral statistical optimization and partial characterization of a bacteriocin substance from a soil bacterium taxonomically affiliated asBacillussp. YAS 1 after biochemical and molecular identifications. A sequential statistical approach (Plackett-Burman and Box-Behnken) was employed to optimize bacteriocin (BAC YAS 1) production. Using optimal levels of three key determinants (yeast extract (0.48% (w/v), incubation time (62 hrs), and agitation speed (207 rpm)) in peptone yeast beef based production medium resulted in 1.6-fold enhancement in BAC YAS 1 level (470 AU/mL arbitrary units againstErwinia amylovora). BAC YAS 1 showed activity over a wide range of pH (1–13) and temperature (45–80°C). A wide spectrum antimicrobial activity of BAC YAS 1 against the human pathogens (Clostridium perfringens,Staphylococcus epidermidis,Campylobacter jejuni,Enterobacter aerogenes,Enterococcussp.,Proteussp.,Klebsiellasp., andSalmonella typhimurium), the plant pathogen (E. amylovora), and the food spoiler (Listeria innocua) was demonstrated. On top and above, BAC YAS 1 showed no antimicrobial activity towards lactic acid bacteria (Lactobacillus bulgaricus,L. casei,L. lactis, andL. reuteri). Promising characteristics of BAC YAS 1 prompt its commercialization for efficient utilization in several industries.

scholarly journals Structural Characterization of Mono and Dihydroxylated Umbelliferone Derivatives

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3497
Author(s):  
Rubén Seoane-Rivero ◽  
Estibaliz Ruiz-Bilbao ◽  
Rodrigo Navarro ◽  
José Manuel Laza ◽  
José María Cuevas ◽  
...  
Keyword(s):  
Biological Activities ◽  
Photophysical Properties ◽  
Polymer Science ◽  
Coumarin Derivatives ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Wide Range ◽  
Potential Applications ◽  
Uv Visible

Coumarin derivatives are a class of compounds with a pronounced wide range of applications, especially in biological activities, in the medicine, pharmacology, cosmetics, coatings and food industry. Their potential applications are highly dependent on the nature of the substituents attached to their nucleus. These substituents modulate their photochemical and photophysical properties, as well as their interactions in their crystalline form, which largely determines the final field of application. Therefore, in this work a series of mono and dihydroxylated coumarin derivatives with different chemical substituents were synthesized and characterized by UV-Visible spectroscopy, thermal analysis (differential scanning calorimetry (DSC) and TGA), 1H NMR and X-Ray Diffraction to identify limitations and possibilities as a function of the molecular structure for expanding their applications in polymer science.

InSb devices: transphasors with high gain, bistable swtiches and sequential logic gates

1984 ◽  
Vol 313 (1525) ◽  
pp. 249-256 ◽  
Keyword(s):  
Optical Bistability ◽  
Continuous Wave ◽  
Logic Gates ◽  
High Gain ◽  
Optical Circuit ◽  
Wide Range ◽  
All Optical ◽  
Sequential Logic ◽  
Potential Applications

InSb etalons operated at 77 K and illuminated by CO lasers (5.5 pm) exhibit continuous wave (c.w.) optical bistability. A wide range of experiments have been performed to further the basic characterization of these devices and to demonstrate their various potential applications. The latter include signal amplification, modulation and, with external switching, the construction of logic gates. Two devices on a single etalon have now been coupled to form a simple all-optical circuit. New results have also been obtained with InSb at room temperature with pulsed CO 2 lasers (10.6 pm).

Polymer Chemistry

2004 ◽  
Keyword(s):  
Conducting Polymers ◽  
Liquid Crystalline ◽  
Polymer Chemistry ◽  
Chain Growth ◽  
Crystalline Polymers ◽  
Wide Range ◽  
Cyclic Oligomers ◽  
Step Growth

Polymer Chemistry: A Practical Approach in Chemistry has been designed for both chemists working in and new to the area of polymer synthesis. It contains detailed instructions for preparation of a wide-range of polymers by a wide variety of different techniques, and describes how this synthetic methodology can be applied to the development of new materials. It includes details of well-established techniques, e.g. chain-growth or step-growth processes together with more up-to-date examples using methods such as atom-transfer radical polymerization. Less well-known procedures are also included, e.g. electrochemical synthesis of conducting polymers and the preparation of liquid crystalline elastomers with highly ordered structures. Other topics covered include general polymerization methodology, controlled/"living" polymerization methods, the formation of cyclic oligomers during step-growth polymerization, the synthesis of conducting polymers based on heterocyclic compounds, dendrimers, the preparation of imprinted polymers and liquid crystalline polymers. The main bulk of the text is preceded by an introductory chapter detailing some of the techniques available to the scientist for the characterization of polymers, both in terms of their chemical composition and in terms of their properties as materials. The book is intended not only for the specialist in polymer chemistry, but also for the organic chemist with little experience who requires a practical introduction to the field.

scholarly journals Synthesis and Characterization of Novel Castor Oil-Based Polyol for Potential Applications in Coatings

2019 ◽  
Vol 7 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Azam Sardari ◽  
Ali Asghar Sabbagh Alvani ◽  
Seyed Reza Ghaffarian
Keyword(s):  
Castor Oil ◽  
Synthesis And Characterization ◽  
Potential Applications

scholarly journals Organelle Genetics in Plants

2021 ◽  
Vol 22 (4) ◽  
pp. 2104
Author(s):  
Pedro Robles ◽  
Víctor Quesada
Keyword(s):  
Rna Editing ◽  
Posttranscriptional Regulation ◽  
Genome Engineering ◽  
Plant Mitochondria ◽  
Plastid Dna ◽  
Chloroplast Genomes ◽  
Wide Range ◽  
Organelle Genetics ◽  
Selection Of

Eleven published articles (4 reviews, 7 research papers) are collected in the Special Issue entitled “Organelle Genetics in Plants.” This selection of papers covers a wide range of topics related to chloroplasts and plant mitochondria research: (i) organellar gene expression (OGE) and, more specifically, chloroplast RNA editing in soybean, mitochondria RNA editing, and intron splicing in soybean during nodulation, as well as the study of the roles of transcriptional and posttranscriptional regulation of OGE in plant adaptation to environmental stress; (ii) analysis of the nuclear integrants of mitochondrial DNA (NUMTs) or plastid DNA (NUPTs); (iii) sequencing and characterization of mitochondrial and chloroplast genomes; (iv) recent advances in plastid genome engineering. Here we summarize the main findings of these works, which represent the latest research on the genetics, genomics, and biotechnology of chloroplasts and mitochondria.

scholarly journals Focused ultrasound in neuro-oncology: the role of the Focused Ultrasound Foundation in driving adoption and innovation

2021 ◽  
Author(s):  
Emily C. Whipple ◽  
Camille A. Favero ◽  
Neal F. Kassell
Keyword(s):  
Drug Delivery ◽  
Brain Tumors ◽  
Focused Ultrasound ◽  
Clinical Evidence ◽  
Neurological Injury ◽  
High Concentration ◽  
Potential Applications ◽  
Tumor Agent

Abstract Introduction Intra-arterial (lA) delivery of therapeutic agents across the blood-brain barrier (BBB) is an evolving strategy which enables the distribution of high concentration therapeutics through a targeted vascular territory, while potentially limiting systemic toxicity. Studies have demonstrated lA methods to be safe and efficacious for a variety of therapeutics. However, further characterization of the clinical efficacy of lA therapy for the treatment of brain tumors and refinement of its potential applications are necessary. Methods We have reviewed the preclinical and clinical evidence supporting superselective intraarterial cerebral infusion (SSJACI) with BBB disruption for the treatment of brain tumors. In addition, we review ongoing clinical trials expanding the applicability and investigating the efficacy of lA therapy for the treatment of brain tumors. Results Trends in recent studies have embraced the use of SSIACI and less neurotoxic chemotherapies. The majority of trials continue to use mannitol as the preferred method of hyperosmolar BBB disruption. Recent preclinical and preliminary human investigations into the lA delivery of Bevacizumab have demonstrated its safety and efficacy as an anti-tumor agent both alone and in combination with chemotherapy. Conclusion lA drug delivery may significantly affect the way treatment are delivered to patients with brain tumors, and in particular GBM. With refinement and standardization of the techniques of lA drug delivery, improved drug selection and formulations, and the development of methods to minimize treatment-related neurological injury, lA therapy may offer significant benefits for the treatment of brain tumors.

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