scholarly journals Raman analysis of a shocked planetary surface analogue: Implications for habitability on Mars

2021 ◽  
Author(s):  
Melissa McHugh ◽  
John Parnell ◽  
Ian B. Hutchinson ◽  
Hannah N. Lerman ◽  
Howell G.M. Edwards ◽  
...  
Keyword(s):  
Planetary Surface ◽  
Raman Analysis

Calibration of Carbonate Composition Using Micro-Raman Analysis: Application to Planetary Surface Exploration

Astrobiology ◽  
2010 ◽  
Vol 10 (3) ◽  
pp. 293-309 ◽  
Author(s):  
Nicolas Rividi ◽  
Mark van Zuilen ◽  
Pascal Philippot ◽  
Bénédicte Ménez ◽  
Gaston Godard ◽  
...  
Keyword(s):  
Planetary Surface ◽  
Raman Analysis ◽  
Surface Exploration ◽  
Analysis Application ◽  
Carbonate Composition

Micro-Raman Analysis of Dielectric Optical Thin Films.

1988 ◽  
Author(s):  
Ansgar Schmid
Keyword(s):  
Thin Films ◽  
Raman Analysis

FORMATION OF LINEAR DUNES AND IMPLICATIONS FOR PLANETARY SURFACE PROCESSES

2017 ◽  
Author(s):  
Robert A. Craddock ◽  
Keyword(s):  
Surface Processes ◽  
Planetary Surface

scholarly journals Crew Time and Perceived Workload in a Planetary Surface Greenhouse based on the Operation of the EDEN ISS Greenhouse in Antarctica from 2019 to 2020

2021 ◽  
Author(s):  
Conrad Zeidler ◽  
Gerrit Woeckner ◽  
Johannes Schöning ◽  
Vincent Vrakking ◽  
Paul Zabel ◽  
...  
Keyword(s):  
Planetary Surface ◽  
Perceived Workload

scholarly journals A Deep Learning Method for Target Pose Estimation of Planetary Surface

2021 ◽  
Vol 1948 (1) ◽  
pp. 012026
Author(s):  
Huang Lu ◽  
Mao Xiaoyan ◽  
Xing Yan
Keyword(s):  
Deep Learning ◽  
Pose Estimation ◽  
Planetary Surface ◽  
Learning Method

scholarly journals 3D Clumps/Extracellular Matrix Complexes of Periodontal Ligament Stem Cells Ameliorate the Attenuating Effects of LPS on Proliferation and Osteogenic Potential

2021 ◽  
Vol 11 (6) ◽  
pp. 528
Author(s):  
Spoorthi Ravi Banavar ◽  
Swati Yeshwant Rawal ◽  
Shaju Jacob Pulikkotil ◽  
Umer Daood ◽  
Ian C. Paterson ◽  
...  
Keyword(s):  
Stem Cells ◽  
Periodontal Ligament ◽  
3D Culture ◽  
Osteogenic Potential ◽  
Culture Methods ◽  
Periodontal Ligament Stem Cells ◽  
Raman Analysis ◽  
Atp Production ◽  
Tnf Α ◽  
Inflammatory Milieu

Background: The effects of lipopolysaccharide (LPS) on cell proliferation and osteogenic potential (OP) of MSCs have been frequently studied. Objective: to compare the effects of LPS on periodontal-ligament-derived mesenchymal stem cells (PDLSCs) in monolayer and 3D culture. Methods: The PDLSCs were colorimetrically assessed for proliferation and osteogenic potential (OP) after LPS treatment. The 3D cells were manually prepared by scratching and allowing them to clump up. The clumps (C-MSCs) were treated with LPS and assessed for Adenosine triphosphate (ATP) and OP. Raman spectroscopy was used to analyze calcium salts, DNA, and proline/hydroxyproline. Multiplexed ELISA was performed to assess LPS induced local inflammation. Results: The proliferation of PDLSCs decreased with LPS. On Day 28, LPS-treated cells showed a reduction in their OP. C-MSCs with LPS did not show a decrease in ATP production. Principal bands identified in Raman analysis were the P–O bond at 960 cm−1 of the mineral component, 785 cm−1, and 855 cm−1 showing qualitative changes in OP, proliferation, and proline/hydroxyproline content, respectively. ELISA confirmed increased levels of IL-6 and IL-8 but with the absence of TNF-α and IL-1β secretion. Conclusions: These observations demonstrate that C-MSCs are more resistant to the effects of LPS than cells in monolayer cell culture. Though LPS stimulation of C-MSCs creates an early pro-inflammatory milieu by secreting IL-6 and IL-8, PDLSCs possess inactivated TNF promoter and an ineffective caspase-1 activating process.

scholarly journals A Study about the Temporal Constraints on the Martian Yardangs’ Development in Medusae Fossae Formation

2021 ◽  
Vol 13 (7) ◽  
pp. 1316
Author(s):  
Jia Liu ◽  
Zongyu Yue ◽  
Kaichang Di ◽  
Sheng Gou ◽  
Shengli Niu
Keyword(s):  
Size Distribution ◽  
Indirect Method ◽  
Common Method ◽  
Planetary Surface ◽  
Temporal Constraints ◽  
History Of Development ◽  
Long Duration ◽  
History Of ◽  
Dating Method

The age of Mars yardangs is significant in studying their development and the evolution of paleoclimate conditions. For planetary surface or landforms, a common method for dating is based on the frequency and size distribution of all the superposed craters after they are formed. However, there is usually a long duration for the yardangs’ formation, and they will alter the superposed craters, making it impossible to give a reliable dating result with the method. An indirect method by analyzing the ages of the superposed layered ejecta was devised in the research. First, the layered ejecta that are superposed on and not altered by the yardangs are identified and mapped. Then, the ages of the layered ejecta are derived according to the crater frequency and size distribution on them. These ages indicate that the yardangs ceased development by these times, and the ages are valuable for studying the evolution of the yardangs. This indirect dating method was applied to the areas of Martian yardangs in the Medusae Fossae Formation (MFF). The ages of the selected six layered ejecta range from ~0.50 Ga to ~1.5 Ga, indicating that the evolution of the corresponding yardangs had been ceased before these times. Analysis of more layered ejecta craters and superposed yardangs implies that yardangs in the MFF have a long history of development and some yardangs are still in active development.

Raman analysis of polypropylene fabric filled hummers method graphene oxide from regenerate carbon of waste tyre

2021 ◽  
Author(s):  
Noor Najmi Bonnia ◽  
Ain Zanaya Zanuri ◽  
Nor Dalila Nor Affendi ◽  
Nurdiana Samsulrizal
Keyword(s):  
Graphene Oxide ◽  
Raman Analysis ◽  
Hummers Method ◽  
Polypropylene Fabric ◽  
Waste Tyre

scholarly journals Stable and tunable plasmon resonance of molybdenum oxide nanosheets from the ultraviolet to the near-infrared region for ultrasensitive surface-enhanced Raman analysis

2019 ◽  
Vol 10 (25) ◽  
pp. 6330-6335 ◽  
Author(s):  
Jinhu Wang ◽  
Yinhua Yang ◽  
Hua Li ◽  
Jun Gao ◽  
Ping He ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Region ◽  
Raman Analysis ◽  
Surface Protection ◽  
Surface Enhanced ◽  
Color Tunable ◽  
Surface Enhanced Raman ◽  
Heavily Doped ◽  
Near Infrared Region ◽  
Preparation Strategy

Preparation of color-tunable and stable plasmonic MoO3 nanomaterials remains challenging, due to the lack of an effective preparation strategy and surface protection in heavily doped MoO3.

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