scholarly journals Relative purity, speed of fluctuations, and bounds on equilibration times

2021 ◽  
Vol 104 (5) ◽  
Author(s):  
Diego Paiva Pires ◽  
Thiago R. de Oliveira
Keyword(s):  
Relative Purity

scholarly journals Development of an Automated High-Throughput Analytical Characterization System for Support of a Central Sample Collection Resource

2003 ◽  
Vol 8 (3) ◽  
pp. 55-61
Author(s):  
Bernard K. Choi ◽  
Nathan A. Yates ◽  
James P. Springer ◽  
Robert E. Schwartz ◽  
Andrew Roberts
Keyword(s):  
Small Sample ◽  
Continuous Operation ◽  
Detection Sensitivity ◽  
Liquid Chromatography Mass Spectrometry ◽  
Sample Collection ◽  
Information Characteristic ◽  
Analytical Characterization ◽  
On Line ◽  
Analytical Instrumentation ◽  
Relative Purity

Ahigh-throughput analytical characterization system was developed for quality control support of a central sample collection resource. This system utilizes liquid chromatography mass spectrometry with in-house developed data automation applications. Continuous operation of analytical instrumentation is accomplished by fully automating sample submission and report processing functions. Comprehensive analytical information characteristic of quality, chemical, and physical properties (e.g. relative purity, detection sensitivity, LogD) are automatically transferred to an on-line database. The application of this database for detailed quality assessment of a small sample library (ca. 24,000 compounds) is demonstrated.

Heavy metal contents of soils and plants adjacent to the Hume Highway near Marulan, New South Wales

1975 ◽  
Vol 15 (74) ◽  
pp. 414 ◽  
Author(s):  
DJ David ◽  
CH Williams
Keyword(s):  
Heavy Metal ◽  
Zinc Oxide ◽  
Heavy Metal Contamination ◽  
New South ◽  
Health Hazard ◽  
The United States ◽  
South Wales ◽  
Metal Contents ◽  
Cadmium And Lead ◽  
Relative Purity

HCL-extractable zinc, lead, cadmium and copper in soils as well as concentrations of these elements in bracken (Pteridium esculentum) were found to decrease along four leeward traverses at right angles to the Hume Highway near Marulan. Similar results were obtained for the above-ground portions of rye corn (Secale cereale) grown in a glasshouse on soils collected along one of these traverses. Zinc accession is similar to, but cadmium and lead accessions are considerably lower than, those observed by other workers in the United States probably owing in the case of cadmium to the use of purer zinc oxide in Australian tyre manufacture and in the case of lead to smaller cars and a smaller proportion of vehicles operating on leaded fuel. Zinc and cadmium analyses of Australian and foreign tyres confirmed the relative purity of the zinc oxide used in the manufacture of tyres in Australia. No serious health hazard appears to arise from heavy metal contamination of roadside soils and vegetation by vehicular traffic on the Hume Highway.

scholarly journals Purification and Compression of Biogas: A Research Experience

1970 ◽  
Vol 7 (1) ◽  
pp. 90-98 ◽  
Author(s):  
Tri Ratna Bajracharya ◽  
Alok Dhungana ◽  
Nirajan Thapaliya ◽  
Gogan Hamal
Keyword(s):  
Energy Efficiency ◽  
Scale Model ◽  
Absolute Pressure ◽  
Net Energy ◽  
Research Experience ◽  
Chemical Purification ◽  
Co2 Gas ◽  
Commercial Use ◽  
Cylinder Compression ◽  
Relative Purity

Biogas is widely used in villages of Nepal for cooking and lighting. But its commercial use has never been realized due to difficulties in its storage and transportation. Solution identified to the problem is to increase the energy density of the gas through removal of incombustible and corrosive gas and consequent compression which was experimented on a lab-scale model. This paper presents all the results of removal of CO2 gas from biogas using different chemicals and relative purity with raw gas. Further, compression of biogas and was carried out by methane refrigerant compressor and bottled into normal LPG cylinder. Compression of biogas was carried out under near Isothermal and Adiabatic conditions up to 11bar absolute pressure. The energy efficiency of compression was determined to be 98.71% and if the gas used for generation of electricity using a generator with an efficiency of 30%, the net energy efficiency turned out to be 95.72%. Later, a boiling test was conducted whereby the combustibility of the compressed biogas from the cylinder in normal biogas-stove was tested to validate its use in cooking, the results of which are included.Key words: Purification of Biogas, Compression of Biogas, Chemical purification, Energy efficiency, Combustion test.Journal of the Institute of Engineering, Vol. 7, No. 1, July 2009,  pp. 90-98doi: 10.3126/jie.v7i1.2066

Relative purity of thrombin-based hemostatic agents used in surgery

2003 ◽  
Vol 197 (4) ◽  
pp. 580-590 ◽  
Author(s):  
Jonathan G Schoenecker ◽  
Rachel K Johnson ◽  
Ryan C Fields ◽  
Aaron P Lesher ◽  
Taymon Domzalski ◽  
...  
Keyword(s):  
Hemostatic Agents ◽  
Relative Purity

scholarly journals Classical and quantum speed limits

Quantum ◽  
2021 ◽  
Vol 5 ◽  
pp. 482
Author(s):  
Katarzyna Bolonek-Lasoń ◽  
Joanna Gonera ◽  
Piotr Kosiński
Keyword(s):  
Quantum State ◽  
Classical Limit ◽  
Speed Limit ◽  
Speed Limits ◽  
Initial Space ◽  
Relative Purity ◽  
Quantum Counterpart

The new bound on quantum speed limit (in terms of relative purity) is derived by applying the original Mandelstam-Tamm one to the evolution in the space of Hilbert-Schmidt operators acting in the initial space of states. It is shown that it provides the quantum counterpart of the classical speed limit derived in Phys. Rev. Lett. 120 (2018), 070402 and the ℏ→0 limit of the former yields the latter. The existence of classical limit is related to the degree of mixing of the quantum state.

scholarly journals ALTERNATIF PENGGUNAAN SILIKA BENTONIT SEBAGAI PENGGANTI FENOL-KLOROFORM-ISOAMIL ALKOHOL DALAM EKSTRAKSI DNA SECARA LANGSUNG DARI TANAH HUTAN MANGROVE

Jurnal Kimia ◽  
2016 ◽  
Author(s):  
Khisan Qamariya ◽  
Wahyu Dwijani Sulihingtyas ◽  
I Nengah Wirajana
Keyword(s):  
Humic Acid ◽  
Gel Electrophoresis ◽  
Mangrove Forest ◽  
Isoamyl Alcohol ◽  
Agarose Gel ◽  
Agarose Gel Electrophoresis ◽  
Metagenomic Dna ◽  
Alcohol Extract ◽  
Purity Level ◽  
Relative Purity

Research on comparing the metagenomic DNA extraction from mangrove forest soil with phenol-chloroform-isoamyl alcohol and with silica bentonite was conducted. The purpose of this study was to find the differences in quality and quantity of metagenomic DNA extracted. The silica bentonite was compared to meet the Green Chemistry concept. The metagenomic DNA from these extractions were analyzed by agarose gel electrophoresis and UV-Vis spectrophotometry. The results of electrophoresis showed that metagenomic DNA extracted with silica bentonite were relatively higher in concentration than with phenol-chloroform-isoamyl alcohol; but integrity of their DNA were the same. The results of UV-Vis spectrophotometry analysis showed that A260/230 ratio of the phenol-chloroform-isoamyl alcohol extract had higher relative purity level to humic acid. The A260/280 ratio of the final elution of the silica bentonite extraction showed the highest relative purity level to protein.

scholarly journals Baby Ghosts: Child Spirits and Contemporary Conceptions of Childhood in Thailand

2014 ◽  
Vol 2 (2) ◽  
pp. 293-317 ◽  
Author(s):  
Megan Sinnott
Keyword(s):  
Adoptive Parents ◽  
Popular Media ◽  
Ambivalent Attitude ◽  
Relative Purity

AbstractThe currently popular practice of propitiating, or ‘adopting’, child spirits in Thailand reveals an ambivalent attitude towards childhood. According to Buddhist scholars on childhood, Buddhist conceptions of children do not differentiate children in significant ways from adults in terms of their relative purity or innocence, as both children and adults possess countless lifetimes of karma; children are thus agentive beings, although not yet fully realised as adults. The child ghosts reflect the complex, competing conceptions of childhood, where they are both valuable resources to be deployed in the assistance of their families, and vulnerable beings in need of adult caretaking. Child ghosts are markers of both material and sentimental resources for their adoptive parents, or ‘guardians’. This article explores representations of child ghosts in popular media, and investigates child ghost propitiation practices through interviews with child ghost guardians. In addition, an overview is provided of the various categories of child ghosts, including kumanthong, kuman-thep, kuman-phrai, luk-krok, and rak-yom.

scholarly journals Extraction and Characterization of Lipopolysaccharide from Salmonella typhi

2021 ◽  
pp. 236-242
Author(s):  
Nilima Patel
Keyword(s):  
Carbohydrate Chain ◽  
Extraction Methods ◽  
Salmonella Typhi ◽  
Gram Negative Bacteria ◽  
Ladder Pattern ◽  
Wet Weight ◽  
Phenol Water ◽  
Phenolic Extraction ◽  
Relative Purity

There is no standard process available for high purity LPS isolation, and it may be appropriate to mix two purification steps. For Salmonella typhi LPS that were subjected to normal microbiological & biochemical screening protocols, updated phenol-water extraction protocol & non-phenolic extraction methods were also used in present research. Pellet of crude LPS obtained with wet weight was 2.0 gm. yield of LPS was more by hot phenol method 1.94 mg/ml as compared to non-phenolic method 0.40 mg/ml. relative purity of LPS obtained by hot phenol method was more as compared to non-phenolic method, as protein content was 23.60 mg/ml in LPS extracted from hot phenol method & 26.62 mg/ ml in LPS extracted from non-phenolic method. However, Nucleic acid contain was comparable in LPS extracted from both methods. Qualitative analysis showed ladder like bands of LPS extracted by hot phenol method as compared to single band obtained for LPS extracted by non-phenolic method. Findings of silver staining clearly revealed ladder pattern of multi-rung bands that are characteristics of smooth form of gram negative bacteria due to difference in length of carbohydrate chain of O-antigen component. In order to clarify diseased conditions & better work on LPS profiling, this research may be crucial to lead to more successful diagnosis and care.

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