The Impact of Operating Parameters on the Polymorphic Transformation ofd-Mannitol Characterized in Situ with Raman Spectroscopy, FBRM, and PVM

2010 ◽  
Vol 14 (6) ◽  
pp. 1432-1437 ◽  
Author(s):  
Weiyi Su ◽  
Hongxun Hao ◽  
Mark Barrett ◽  
Brian Glennon
Keyword(s):  
Raman Spectroscopy ◽  
Polymorphic Transformation ◽  
Operating Parameters ◽  
The Impact

scholarly journals Multimodal Analysis of the Tissue Response to a Bone-Anchored Hearing Implant: Presentation of a Two-Year Case Report of a Patient With Recurrent Pain, Inflammation, and Infection, Including a Systematic Literature Review

2021 ◽  
Vol 11 ◽  
Author(s):  
Martin L. Johansson ◽  
Tim G.A. Calon ◽  
Omar Omar ◽  
Furqan A. Shah ◽  
Margarita Trobos ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Case Report ◽  
Bacterial Colonization ◽  
Tissue Response ◽  
Micro Ct ◽  
Skin Reactions ◽  
Multimodal Analysis ◽  
Post Surgery ◽  
The Impact

Osseointegration is a well-established concept used in applications including the percutaneous Bone-Anchored Hearing System (BAHS) and auricular rehabilitation. To date, few retrieved implants have been described. A systematic review including cases where percutaneous bone-anchored implants inserted in the temporal bone were retrieved and analyzed was performed. We also present the case of a patient who received a BAHS for mixed hearing loss. After the initial surgery, several episodes of soft tissue inflammation accompanied by pain were observed, leading to elective abutment removal 14 months post-surgery. Two years post-implantation, the implant was removed due to pain and subjected to a multiscale and multimodal analysis: microbial DNA using molecular fingerprinting, gene expression using quantitative real-time polymerase chain reaction (qPCR), X-ray microcomputed tomography (micro-CT), histology, histomorphometry, backscattered scanning electron microscopy (BSE-SEM), Raman spectroscopy, and fluorescence in situ hybridization (FISH). Evidence of osseointegration was provided via micro-CT, histology, BSE-SEM, and Raman spectroscopy. Polymicrobial colonization in the periabutment area and on the implant, including that with Staphylococcus aureus and Staphylococcus epidermidis, was determined using a molecular analysis via a 16S-23S rDNA interspace [IS]-region-based profiling method (IS-Pro). The histology suggested bacterial colonization in the skin and in the peri-implant bone. FISH confirmed the localization of S. aureus and coagulase-negative staphylococci in the skin. Ten articles (54 implants, 47 patients) met the inclusion criteria for the literature search. The analyzed samples were either BAHS (35 implants) or bone-anchored aural epitheses (19 implants) in situ between 2 weeks and 8 years. The main reasons for elective removal were nonuse/changes in treatment, pain, or skin reactions. Most samples were evaluated using histology, demonstrating osseointegration, but with the absence of bone under the implants’ proximal flange. Taken together, the literature and this case report show clear evidence of osseointegration, despite prominent complications. Nevertheless, despite implant osseointegration, chronic pain related to the BAHS may be associated with a chronic bacterial infection and raised inflammatory response in the absence of macroscopic signs of infection. It is suggested that a multimodal analysis of peri-implant health provides possibilities for device improvements and to guide diagnostic and therapeutic strategies to alleviate the impact of complications.

scholarly journals In-situ monitoring of seeded and unseeded stage III corrosion using Raman spectroscopy

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Joseph V. Ryan ◽  
Benjamin Parruzot ◽  
Amanda M. Lines ◽  
Samuel A. Bryan ◽  
Lorraine M. Seymour ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Reaction Rates ◽  
In Situ Monitoring ◽  
Stage Iii ◽  
Orthosilicic Acid ◽  
Dissolution Behavior ◽  
Glass Dissolution ◽  
Corrosion Rates ◽  
The Impact

Abstract Stage III glass dissolution, the occasionally observed tendency for accelerated aqueous corrosion after extensive time spent at low reaction rates, is a major area of technical uncertainty in long-term glass performance modeling for vitreous nuclear waste forms. Stage III dissolution behavior is thought to be caused by the precipitation of zeolite phases that lower the activity of the rate-controlling orthosilicic acid ion and cause the acceleration of glass dissolution. The uncertainty lies mainly in a poor understanding of the growth kinetics of these key crystalline phases. It is particularly important to understand the impact of temperature and pH conditions on Stage III behavior. Accurate analysis of this phenomenon is complicated by the typically very long (e.g., years), and variable length of the induction period preceding the onset of Stage III behavior. In this study of a high-sodium aluminoborosilicate glass, we demonstrate the ability to initiate the onset of Stage III behavior in a controllable fashion so as to both reduce the time delay of the incubation period, and to also be able to initiate Stage III dissolution in controlled conditions. In this case, we demonstrate that Stage III glass corrosion behavior is possible at 70 °C, a lower temperature than previously observed (90 °C), even in an unseeded experiment. We confirm, through a comparison study, that seeded and unseeded Stage III corrosion rates are equivalent. This enables wide-scale testing of Stage III corrosion rates for many glass compositions in relatively short times through this technique. We also report further development of the use of in situ Raman spectroscopy monitoring of boron concentration and pH through simple and chemometric analysis methods.

In situ Quantification of the Impact of Episodic Enhanced Turbulent Events in Large Phytoplankton

2011 ◽  
Author(s):  
Percy L. Donaghay ◽  
Jan Rines ◽  
James Sullivan
Keyword(s):  
The Impact

In Situ Raman Spectroscopy Studies on La2CaB10O19 Crystal Growth

2020 ◽  
Vol 20 (10) ◽  
pp. 6604-6609
Author(s):  
Shanshan Liu ◽  
Guochun Zhang ◽  
Kai Feng ◽  
Yanyang Han ◽  
Tao He ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Crystal Growth ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman ◽  
Spectroscopy Studies

scholarly journals Retraction of “High-Capacitance Mechanism for Ti3C2Tx MXene by in Situ Electrochemical Raman Spectroscopy Investigation″

ACS Nano ◽  
2021 ◽  
Author(s):  
Minmin Hu ◽  
Zhaojin Li ◽  
Tao Hu ◽  
Shihao Zhu ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
High Capacitance

The use of in-situ Raman spectroscopy in investigating carbon materials as the anodes of alkali metal-ion batteries

Carbon ◽  
2021 ◽  
Vol 177 ◽  
pp. 428
Author(s):  
Xiaoqin Cheng ◽  
Huijun Li ◽  
Zhenxin Zhao ◽  
Yong-zhen Wang ◽  
Xiaomin Wang
Keyword(s):  
Raman Spectroscopy ◽  
Alkali Metal ◽  
Metal Ion ◽  
Carbon Materials ◽  
In Situ Raman Spectroscopy ◽  
Alkali Metal Ion ◽  
In Situ Raman
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