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Author : A. B. Griffiths
Publisher :
ISBN 13 :
Total Pages : 378 pages
Book Rating : 4.A/5 ( download)
Download or read book Researches on Micro-organisms written by A. B. Griffiths and published by . This book was released on 1891 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicholas Vogt
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (124 download)
Download or read book Microbes and Microstructure written by Nicholas Vogt and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alzheimer's disease (AD) currently has no prevention, treatment, or cure, and the etiology of this devasting neurodegenerative disease remains largely unclear, despite decades of research. In order to combat the significant challenges posed by AD, it will be critical to improve our understanding of factors that contribute to disease as well as to develop sensitive markers of early pathological changes. Towards this end, the work included in this dissertation focused on the role of the gut microbiome in AD, as well as the use of advanced multi-shell diffusion-weighted MRI to characterize cortical microstructural alterations in preclinical and clinical AD. In Chapter 1, we performed the first comprehensive survey of gut microbiota in individuals with AD and revealed broad-scale alterations in gut bacterial composition in individuals with AD. Moreover, we also found that gut bacterial taxa that are altered in AD correlate with cerebrospinal fluid (CSF) biomarkers of AD pathology, even in cognitively unimpaired individuals. In Chapter 2, we found that the gut microbiota-derived metabolite trimethylamine N-oxide (TMAO), which has been linked to brain aging and cognitive impairment in mice, is elevated in the CSF of individuals with AD and mild cognitive impairment (MCI), and that levels of CSF TMAO correlate with markers of AD pathology and neurodegeneration. In Chapter 3, we used neurite orientation dispersion and density imaging (NODDI), a multi-compartment diffusion-weighted imaging (DWI) model, to show that cortical NODDI metrics are altered in individuals with MCI and AD. Notably, for individuals with MCI, several key brain regions showed changes in cortical microstructure but not cortical thickness. In Chapter 4, we extended this work into the preclinical stage of AD and found a non-monotonic relationship between AD pathology and cortical neurite density, but not cortical thickness, suggesting that NODDI metrics are more sensitive markers of early neurodegenerative changes than conventional T1-weighted MRI measurements. Overall, the work included in this dissertation contributes to addressing the enormous problem of AD by furthering our growing understanding of the role of gut microbiota in AD, as well as highlighting the utility of NODDI metrics in detecting early cortical microstructural changes.
Author : Mamdouh El-Bakry
Publisher : John Wiley & Sons
ISBN 13 : 1118964217
Total Pages : 424 pages
Book Rating : 4.1/5 (189 download)
Download or read book Microstructure of Dairy Products written by Mamdouh El-Bakry and published by John Wiley & Sons. This book was released on 2018-07-13 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the most recent developments in microscopy techniques and types of analysis used to study the microstructure of dairy products This comprehensive and timely text focuses on the microstructure analyses of dairy products as well as on detailed microstructural aspects of them. Featuring contributions from a global team of experts, it offers great insight into the understanding of different phenomena that relate to the functional and biochemical changes during processing and subsequent storage. Structured into two parts, Microstructure of Dairy Products begins with an overview of microscopy techniques and software used for microstructural analyses. It discusses, in detail, different types of the following techniques, such as: light microscopy (including bright field, polarized, and confocal scanning laser microscopy) and electron microscopy (mainly scanning and transmission electron microscopy). The description of these techniques also includes the staining procedures and sample preparation methods developed. Emerging microscopy techniques are also covered, reflecting the latest advances in this field. Part 2 of the book focuses on the microstructure of various dairy foods, dividing each into sections related to the microstructure of milk, cheeses, yogurts, powders, and fat products, ice cream and frozen dairy desserts, dairy powders and selected traditional Indian dairy products. In addition, there is a review of the localization of microorganism within the microstructure of various dairy products. The last chapter discusses the challenges and future trends of the microstructure of dairy products. Presents complete coverage of the latest developments in dairy product microscopy techniques Details the use of microscopy techniques in structural analysis An essential purchase for companies, researchers, and other professionals in the dairy sector Microstructure of Dairy Products is an excellent resource for food scientists, technologists, and chemists—and physicists, rheologists, and microscopists—who deal in dairy products.
Author : David Burnie
Publisher : DK Publishing (Dorling Kindersley)
ISBN 13 : 9780789420367
Total Pages : 48 pages
Book Rating : 4.4/5 (23 download)
Download or read book Microlife written by David Burnie and published by DK Publishing (Dorling Kindersley). This book was released on 1999-06 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uses intricate models and cross-sections to explore teh structure and function of microscopic life and particles including atoms, molecules, cells, bacteria, fungal spores and ice crystals.
Author : A. Perez-Miravete
Publisher : Springer Science & Business Media
ISBN 13 : 1468419625
Total Pages : 315 pages
Book Rating : 4.4/5 (684 download)
Download or read book Behaviour of Micro-organisms written by A. Perez-Miravete and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organisms are constantly being bombarded by stimuli in their envi ronment (and also by internal stimuli), and a common way of responding is by movement. This is an aspect of irritability, or excitability, or behaviour. Response to stimuli by movement is found in all organisms: it represents one of the universalities of biology. Yet at the molecular level it is one of the least understood of biological phenomena. Micro-organisms are no exception. If motile, they respond to stimuli by active movement (taxis); if sessile, they respond by growth movements (tropisms). Responses by movement are known among micro-organisms to such stimuli as chemicals, electric current, gravity, light, temperature, touch, and vibrations. The behaviour of micro-organisms is an exciting subject, first of all for its own sake, but in addition because it may reveal facts and concepts that are applicable to understanding behaviour in more complicated organisms (even us) and because it may, help to understand the movement of cells and tissues during differentiation and development of higher plants and animals.
Author : E. Klein
Publisher : Forgotten Books
ISBN 13 : 9780656105984
Total Pages : 608 pages
Book Rating : 4.1/5 (59 download)
Download or read book Micro-Organisms and Disease written by E. Klein and published by Forgotten Books. This book was released on 2018-02-12 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Micro-Organisms and Disease: An Introduction to the Study of Specific Micro-Organisms To mention two series only it has been shown that there occur in some individuals a variety of localised inflam matory and suppurative foci, which are intimately associated not necessarily with pus - forming cocci - the microbes of typi cal suppuration - but with one or the other kind of microbes - e.g. Proteus vulgaris, bacillus coli, pneumococcus, and other microbes. These organisms have in these particular cases only caused disease under healthy conditions their presence in the various tissues is insufficient to do so. Or, to take another series of disorders: fatal summer diarrhoeas in children and in adults. Bacillus coli or proteus vulgaris are under ordinary normal conditions found in the intestine, in the large intestine and in the lower ileum, as also in many other conditions associated with putrid proteid decomposition. Under certain abnormal conditions of the intestine caused, in the first instance, by fermentative changes, such as the lactic or acetic fermentation or others, the intestinal tract, specially the small intestine, is rendered highly favourable for the multiplication of those microbes, so that it practically contains a pure culture of them. Bacillus coli and proteus vulgaris, being both endowed with the power of intensive proteid decomposition, would under these favourable conditions of multiplication produce copiously poisonous alkaloids, ptomaines or allied toxins, which, absorbed into the circulation, might produce fatal results. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author : United States. Agricultural Research Service
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.X/5 (3 download)
Download or read book Micro-organisms; what They Are, where They Grow, what They Do written by United States. Agricultural Research Service and published by . This book was released on 1964 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joela Jacobs
Publisher : punctum books
ISBN 13 : 1685711707
Total Pages : 149 pages
Book Rating : 4.6/5 (857 download)
Download or read book Microbium: The Neglected Lives of Micro-matter written by Joela Jacobs and published by punctum books. This book was released on 2023-09-06 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbium: The Neglected Lives of Micro-matter tells the story of small matter such as bacteria, coral, fungi, lichen, pollen, protozoa, and viruses. With short entries that are organized like a herbarium or similar specimen collection, the book is a "microbium"-both the term for a single microbe and a play on "microbiome." As such, Microbium makes visible the often overseen but huge impact of miniscule matter on human culture and the environment. Each entry is a "microscopic reading" that describes the natural history and scientific discovery of a particular form of micro-matter, while also telling a story about the cultural and artistic roles it has played over the centuries. From the poetry of Emily Dickinson to the "coralness" of coral reefs to contemporary literature about the COVID-19 pandemic, this book places micro-matter under a cultural microscope and translates the significance of the invisible interspecies social realm to the human scale, magnifying the many ways in which micro-matter matters. Ultimately, Microbium shows the potential of micro-matter to teach us how to revitalize our political and cultural systems, habits of thought, and aesthetic or representational modes.
Author : Edward Emanuel Klein
Publisher :
ISBN 13 : 1408628104
Total Pages : 267 pages
Book Rating : 4.4/5 (86 download)
Download or read book Micro-Organisms and Disease - An Introduction Into the Study of Specific Micro-Organisms written by Edward Emanuel Klein and published by . This book was released on 2007 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: PREFACE. THE Author of this very practical treatise on Scotch Loch - Fishing desires clearly that it may be of use to all who had it. He does not pretend to have written anything new, but to have attempted to put what he has to say in as readable a form as possible. Everything in the way of the history and habits of fish has been studiously avoided, and technicalities have been used as sparingly as possible. The writing of this book has afforded him pleasure in his leisure moments, and that pleasure would be much increased if he knew that the perusal of it would create any bond of sympathy between himself and the angling community in general. This section is interleaved with blank shects for the readers notes. The Author need hardly say that any suggestions addressed to the case of the publishers, will meet with consideration in a future edition. We do not pretend to write or enlarge upon a new subject. Much has been said and written-and well said and written too on the art of fishing but loch-fishing has been rather looked upon as a second-rate performance, and to dispel this idea is one of the objects for which this present treatise has been written. Far be it from us to say anything against fishing, lawfully practised in any form but many pent up in our large towns will bear us out when me say that, on the whole, a days loch-fishing is the most convenient. One great matter is, that the loch-fisher is depend- ent on nothing but enough wind to curl the water, -and on a large loch it is very seldom that a dead calm prevails all day, -and can make his arrangements for a day, weeks beforehand whereas the stream- fisher is dependent for a good take on the state of the water and however pleasant and easy it may be for one living near the banks of a good trout stream or river, it is quite another matter to arrange for a days river-fishing, if one is looking forward to a holiday at a date some weeks ahead. Providence may favour the expectant angler with a good day, and the water in order but experience has taught most of us that the good days are in the minority, and that, as is the case with our rapid running streams, -such as many of our northern streams are, -the water is either too large or too small, unless, as previously remarked, you live near at hand, and can catch it at its best. A common belief in regard to loch-fishing is, that the tyro and the experienced angler have nearly the same chance in fishing, -the one from the stern and the other from the bow of the same boat. Of all the absurd beliefs as to loch-fishing, this is one of the most absurd. Try it. Give the tyro either end of the boat he likes give him a cast of ally flies he may fancy, or even a cast similar to those which a crack may be using and if he catches one for every three the other has, he may consider himself very lucky. Of course there are lochs where the fish are not abundant, and a beginner may come across as many as an older fisher but we speak of lochs where there are fish to be caught, and where each has a fair chance. Again, it is said that the boatman has as much to do with catching trout in a loch as the angler. Well, we dont deny that. In an untried loch it is necessary to have the guidance of a good boatman but the same argument holds good as to stream-fishing...
Author : David O. Carter
Publisher : John Wiley & Sons
ISBN 13 : 1119062578
Total Pages : 424 pages
Book Rating : 4.1/5 (19 download)
Download or read book Forensic Microbiology written by David O. Carter and published by John Wiley & Sons. This book was released on 2017-03-27 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forensic Microbiology focuses on newly emerging areas of microbiology relevant to medicolegal and criminal investigations: postmortem changes, establishing cause of death, estimating postmortem interval, and trace evidence analysis. Recent developments in sequencing technology allow researchers, and potentially practitioners, to examine microbial communities at unprecedented resolution and in multidisciplinary contexts. This detailed study of microbes facilitates the development of new forensic tools that use the structure and function of microbial communities as physical evidence. Chapters cover: Experiment design Data analysis Sample preservation The influence of microbes on results from autopsy, toxicology, and histology Decomposition ecology Trace evidence This diverse, rapidly evolving field of study has the potential to provide high quality microbial evidence which can be replicated across laboratories, providing spatial and temporal evidence which could be crucial in a broad range of investigative contexts. This book is intended as a resource for students, microbiologists, investigators, pathologists, and other forensic science professionals.
Author : Edouard-Louis Trouessart
Publisher :
ISBN 13 :
Total Pages : 388 pages
Book Rating : 4.:/5 (32 download)
Download or read book Microbes, Ferments and Moulds written by Edouard-Louis Trouessart and published by . This book was released on 1886 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lilian E. Hawker
Publisher :
ISBN 13 :
Total Pages : 402 pages
Book Rating : 4.3/5 (91 download)
Download or read book Micro-organisms written by Lilian E. Hawker and published by . This book was released on 1979 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Erika Andrea Parra
Publisher :
ISBN 13 :
Total Pages : 286 pages
Book Rating : 4.:/5 (868 download)
Download or read book Microfluidic Microbial Fuel Cells for Microstructure Interrogations written by Erika Andrea Parra and published by . This book was released on 2010 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: The breakdown of organic substances to retrieve energy is a naturally occurring process in nature. Catabolic microorganisms contain enzymes capable of accelerating the disintegration of simple sugars and alcohols to produce separated charge in the form of electrons and protons as byproducts that can be harvested extracellularly through an electrochemical cell to produce electrical energy directly. Bioelectrochemical energy is then an appealing green alternative to other power sources. However, a number of fundamental questions must be addressed if the technology is to become economically feasible. Power densities are low, hence the electron flow through the system: bacteria-electrode connectivity, the volumetric limit of catalyst loading, and the rate-limiting step in the system must be understood and optimized. This project investigated the miniaturization of microbial fuel cells to explore the scaling of the biocatalysis and generate a platform to study fundamental microstructure effects. Ultra-micro-electrodes for single cell studies were developed within a microfluidic configuration to quantify these issues and provide insight on the output capacity of microbial fuel cells as well as commercial feasibility as power sources for electronic devices. Several devices were investigated in this work. The first prototype consisted of a gold array anode on a silicon dioxide passivation layer that intended to imitate yet simplify the complexity of a 3D carbon structure on a 2D plane. Using Geobacter sulfurreducens, an organism believed to utilize direct electron transfer to electrodes, the 1 mm2 electrode demonstrated a maximum current density of 1.4 [mu]A and 120 nW of power after 10 days. In addition, the transient current-voltage responses were analyzed over the bacterial colonization period. The results indicated that over a 6-day period, the bacteria increased the capacitance of the cell 5-orders-of-magnitude and decreased the resistance by 3X over the bare electrode. Furthermore, over short experimental scales (hours), the RC constant was maintained but capacitance and resistance were inversely related. As the capacitance result coincides with expected biomass increase over the incubation period, it may be possible for an electrical spectroscopy (impedance) non-invasive technique to be developed to estimate biomass on the electrode. Similarly, the R and C relationship over short experimental scales could be explored further to provide insight on biolm morphology. Lastly, fluorescence and SEM microscopy were used to observe the biofilm development and demonstrated that, rather than growing at even density, the bacteria nucleated at points on the electrode, and dendritically divided, until joining to form the "dense" biofilm. In addition, viable microorganisms undergoing cell division were found dozens of microns from electrode surfaces without visible pili connections. To investigate single-cell catalysis or microstructure effects, a sub-micro-liter microfluidic single-channel MFC with an embedded reference electrode and solid-state nal electron acceptor was developed. The system allowed for parallel (16) working ultra-micro-electrodes and was microscopy compatible. With Geobacter sulfurreducens, the semiconducting ITO electrodes demonstrated forward bias behavior and suitability for anodic characterization. The first prototype demonstrated, with 179 cells on the electrode, a per cell contribution of 223 fA at +400 mV (vs. SHE). The second prototype with a 7 [mu]m diameter electrode produced a current density of 3.9 pA/[mu]m2 (3.9 A/m2) at +200 mV (vs. SHE) and a signal-to-noise ratio (SNR) of 4.9 when inoculated at a seeding density of 109 cells/mL. However, diluting the sample by 10x produced an SNR of 0.5, suggesting that obtaining single cell electron transfer rates to an electrode over short experimental time scales may not be possible with the system as tested. Nevertheless, the platform allows microstructure characterization and multiplexing within a single microfluidic chamber.
Author : Édouard Louis Trouessart
Publisher :
ISBN 13 :
Total Pages : 348 pages
Book Rating : 4.F/5 ( download)
Download or read book Microbes, ferments and moulds written by Édouard Louis Trouessart and published by . This book was released on 1886 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : E. Klein
Publisher :
ISBN 13 : 9780649276776
Total Pages : 300 pages
Book Rating : 4.2/5 (767 download)
Download or read book Micro-organisms and Disease; an Introduction Into the Study of Specific Microorganisms written by E. Klein and published by . This book was released on 2017-08-20 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward Emanuel 1844-1925 Klein
Publisher : Wentworth Press
ISBN 13 : 9781372794612
Total Pages : 292 pages
Book Rating : 4.7/5 (946 download)
Download or read book MICRO-ORGANISMS & DISEASE AN I written by Edward Emanuel 1844-1925 Klein and published by Wentworth Press. This book was released on 2016-08-28 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : Maurine Montagnat
Publisher : Frontiers Media SA
ISBN 13 : 2889663590
Total Pages : 135 pages
Book Rating : 4.8/5 (896 download)
Download or read book About the Relevance of Snow Microstructure Study in Cryospheric Sciences written by Maurine Montagnat and published by Frontiers Media SA. This book was released on 2021-01-07 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
