A systematic investigation and characterization of interfacial hydrated n‐alkane films by total internal multiple reflection

1985 ◽  
Vol 82 (2) ◽  
pp. 1021-1024 ◽  
Author(s):  
J. F. Giuliani ◽  
N. L. Jarvis
Keyword(s):  
Systematic Investigation ◽  
Multiple Reflection ◽  
Alkane Films

Systematic discovery and characterization of stress-related microRNA genes in Oryza sativa

Biologia ◽  
2015 ◽  
Vol 70 (1) ◽  
Author(s):  
Kai Bin Xie ◽  
Xue Zhou ◽  
Tian Hai Zhang ◽  
Bao Long Zhang ◽  
Li Ming Chen ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Stress Responses ◽  
Systematic Investigation ◽  
Chemical Toxicity ◽  
Promoter Regions ◽  
Crop Species ◽  
Translation Inhibition ◽  
Microrna Genes ◽  
Insight Into

AbstractAbiotic stresses including drought, salinity, extreme temperatures, chemical toxicity and oxidative are the natural status of the environment to exert serious threats to agriculture. Abiotic stress-related microRNAs (ASmiRNAs) are a group of microRNAs (miRNAs) regulating stress responses in plants. However, the systematic investigation of ASmiRNAs is limited in Rice (O. sativa), a typical abiotic stress-resistant crop species. In the present work, we systematically investigated ASmiRNAs in silico. First, we identified 177 putative ASmiRNAs in O.sativa. Second, we found most ASmiRNAs were driven by TATA-promoter and most stress-related miRNA promoter regions contained the stress-related elements. Third, we found many ASmiRNAs families were species/family specific and a set of miRNAs might derive from genomic repeat-sequences in O. sativa. Finally, we found the ASmiRNAs in O. sativa target 289 genes with 1050 predicted target sites in which 98% sites have cleavage activity and 2% sites have translation inhibition activity. In conclusion, our findings provide an insight into both the function and evolution of ASmiRNAs and improve our understanding on the mechanism of abiotic stress resistance in O. sativa.

Application of Atom Probe Microanalysis for Understanding Microstructure Evolution in Nickel Base Superalloy Welds

2000 ◽  
Vol 6 (S2) ◽  
pp. 350-351
Author(s):  
S. S. Babu ◽  
S. A. David ◽  
M. K. Miller
Keyword(s):  
Microstructure Evolution ◽  
Predictive Models ◽  
Strong Relationship ◽  
Atom Probe ◽  
Systematic Investigation ◽  
Nickel Base Superalloy ◽  
Cooling Conditions ◽  
Nickel Base ◽  
Base Superalloy

The characterization of the microstructure evolution during welding of nickel base superalloys is required for efficient reuse and reclamation of used and failed components. Previous atom probe analysis of electron-beam and laser-beam welds revealed complex alloying elemental partitioning between the γ and γ phases. Rapid cooling conditions in the weld leads to non-equilibrium partitioning and large amplitude Cr and Co levels in the γ phase. These results indicated that there is a strong relationship between weld cooling rate and the precipitation of γ′ precipitates from the γ phase. To understand and develop predictive models, a systematic investigation of the microstructure evolution in CM247DS alloy under controlled thermomechanical conditions are being performed. This paper describes some recent results on the elemental partitioning between γ and γ′ phases obtained with atom probe microanalysis.

On the Structure of Certain Nest Algebra Modules

1987 ◽  
Vol 39 (6) ◽  
pp. 1405-1412
Author(s):  
G. J. Knowles
Keyword(s):  
Operator Algebras ◽  
Adjoint Operator ◽  
Systematic Investigation ◽  
Unique Determination ◽  
Nest Algebra ◽  
Minimal Elements ◽  
Open Questions ◽  
Weakly Closed ◽  
Order Homomorphisms

Let be a nest algebra of operators on some Hilbert space H. Weakly closed -modules were first studied by J. Erdos and S. Power in [4]. It became apparent that many interesting classes of non self-adjoint operator algebras arise as just such a module. This paper undertakes a systematic investigation of the correspondence which arises between such modules and order homomorphisms from Lat into itself. This perspective provides a basis to answer some open questions arising from [4]. In particular, the questions concerning unique “determination” and characterization of maximal and minimal elements under this correspondence, are resolved. This is then used to establish when the determining homomorphism is unique.

scholarly journals Synthesis and Characterization of Acridinium Dyes for Photoredox Catalysis

Synlett ◽  
2019 ◽  
Vol 30 (07) ◽  
pp. 827-832 ◽  
Author(s):  
Alexander White ◽  
Leifeng Wang ◽  
David Nicewicz
Keyword(s):  
Photophysical Properties ◽  
Direct Conversion ◽  
Systematic Investigation ◽  
Synthetic Methods ◽  
Synthesis And Characterization ◽  
Substitution Effects ◽  
Photoredox Catalysis ◽  
Methods Development

Photoredox catalysis is a rapidly evolving platform for synthetic methods development. The prominent use of acridinium salts as a sustainable option for photoredox catalysts has driven the development of more robust and synthetically useful versions based on this scaffold. However, more complicated syntheses, increased cost, and limited commercial availability have hindered the adoption of these catalysts by the greater synthetic community. By utilizing the direct conversion of a xanthylium salt into the corresponding acridinium as the key transformation, we present an efficient and scalable preparation of the most synthetically useful acridinium reported to date. This divergent strategy also enabled the preparation of a suite of novel acridinium dyes, allowing for a systematic investigation of substitution effects on their photophysical properties.

scholarly journals Dissecting phenotypic transitions in metastatic disease via photoconversion-based isolation

eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Yogev Sela ◽  
Jinyang Li ◽  
Paola Kuri ◽  
Allyson J Merrell ◽  
Ning Li ◽  
...  
Keyword(s):  
Transcriptional Profiling ◽  
Systematic Investigation ◽  
Isolation Technique ◽  
Isolation And Characterization ◽  
Metastatic Cells ◽  
Distinct Cell ◽  
Response Phenotype ◽  
Efficient Recovery ◽  
Therapy Studies

Cancer patients often harbor occult metastases, a potential source of relapse that is targetable only through systemic therapy. Studies of this occult fraction have been limited by a lack of tools with which to isolate discrete cells on spatial grounds. We developed PIC-IT, a photoconversion-based isolation technique allowing efficient recovery of cell clusters of any size – including single-metastatic cells – which are largely inaccessible otherwise. In a murine pancreatic cancer model, transcriptional profiling of spontaneously arising microcolonies revealed phenotypic heterogeneity, functionally reduced propensity to proliferate and enrichment for an inflammatory-response phenotype associated with NF-κB/AP-1 signaling. Pharmacological inhibition of NF-κB depleted microcolonies but had no effect on macrometastases, suggesting microcolonies are particularly dependent on this pathway. PIC-IT thus enables systematic investigation of metastatic heterogeneity. Moreover, the technique can be applied to other biological systems in which isolation and characterization of spatially distinct cell populations is not currently feasible.

scholarly journals Using the Emission of Muonic X-rays as a Spectroscopic Tool for the Investigation of the Local Chemistry of Elements

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1260
Author(s):  
Matteo Aramini ◽  
Chiara Milanese ◽  
Adrian D. Hillier ◽  
Alessandro Girella ◽  
Christian Horstmann ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Qualitative Method ◽  
Hydrogen Desorption ◽  
Systematic Investigation ◽  
Muonic Atom ◽  
X Rays ◽  
X Ray ◽  
Spectroscopic Tool ◽  
X Ray Absorption

There are several techniques providing quantitative elemental analysis, but very few capable of identifying both the concentration and chemical state of elements. This study presents a systematic investigation of the properties of the X-rays emitted after the atomic capture of negatively charged muons. The probability rates of the muonic transitions possess sensitivity to the electronic structure of materials, thus making the muonic X-ray Emission Spectroscopy complementary to the X-ray Absorption and Emission techniques for the study of the chemistry of elements, and able of unparalleled analysis in case of elements bearing low atomic numbers. This qualitative method is applied to the characterization of light elements-based, energy-relevant materials involved in the reaction of hydrogen desorption from the reactive hydride composite Ca(BH4)2-Mg2NiH4. The origin of the influence of the band-structure on the muonic atom is discussed and the observed effects are attributed to the contribution of the electronic structure to the screening and to the momentum distribution in the muon cascade.

Characterization of natural posttranslationally processed peptides from human blood: A new tool in the systematic investigation of native peptides

1993 ◽  
pp. 553-557 ◽  
Author(s):  
Wolf-Georg Forssmann ◽  
Peter Schulz-Knappe ◽  
Markus Meyer ◽  
Knut Adermann ◽  
Kristin Forssmann ◽  
...  
Keyword(s):  
Human Blood ◽  
Systematic Investigation ◽  
Native Peptides

Systematic Investigation and Characterization of Ag Paste for LED Die Attach

2021 ◽  
Author(s):  
Liangxing Hu ◽  
Jing Tao ◽  
Shuyu Bao ◽  
Simon Chun Kiat Goh ◽  
Yu Dian Lim ◽  
...  
Keyword(s):  
Systematic Investigation ◽  
Die Attach ◽  
Ag Paste
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