Explicit theta correspondence for the dual pairs (O(p,q),Sp(2n,R)) with p+q=4

Fan, Xiang Ning

doi:10.14711/thesis-b1345731

Cited by 4 publications

(5 citation statements)

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“…This work also demonstrated the advantage of porous graphite chromatography in separating chitooligosaccharides, separations that could not be achieved using anion exchange (0116). Confirming results of other studies involving chromatography of oligosaccharides, split anomeric peaks were observed, which merged into one peak in a 10 mM NH4OH mobile phase at 70 °C (0116). The sialylated and nonsialylated forms of both oligosaccharides and oligosaccharide alditols are all retained on porous graphite, an advantage over anion exchange, which has minimal retention of the nonsialylated species (0117).…”

Section: Reversed Phasesupporting

confidence: 83%

“…One study demonstrated this capability for various compounds, including a simultaneous separation of anionic and cationic technetium compounds, a separation of creatine and creatinine, and a determination of oxalic acid (note that creatine and oxalic acid are difficult to retain on a Ci8 column) (0105). In another study, oligosaccharides and oligosaccharides linked to one or two amino aids could be retained and separated on a porous graphite column, unlike Ci8 silica columns, which barely retain these hydrophilic compounds (0116). This work also demonstrated the advantage of porous graphite chromatography in separating chitooligosaccharides, separations that could not be achieved using anion exchange (0116).…”

Section: Reversed Phasementioning

confidence: 99%

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High-performance liquid chromatography (advances in packing materials)

Anderson¹

1995

Anal. Chem.

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The previous review of high-performance liquid chromatography (HPLC) in clinical chemistry appearing in the applications review of Analytical Chemistry (01) covered the area of HPLC separation methodologies, specifically reviewing the topic of direct injection techniques, which are techniques that allow direct injection of protein-containing samples (such as serum) onto HPLC columns. In this review, advances in packing materials are reviewed, specifically covering advances in base supports and reversed-phase packing materials that seek to address the problems encountered with conventional silica-based packing materials. These problems include limited stability, adverse

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Section: Reversed Phasesupporting

confidence: 83%

Section: Reversed Phasementioning

confidence: 99%

High-performance liquid chromatography (advances in packing materials)

Anderson¹

1995

Anal. Chem.

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“…Iminosugars, widespread in plants and microorganisms, are carbohydrate mimetics in which the endocyclic oxygen is replaced by nitrogen . These kinds of compounds raise many synthetic challenges and open the way to treat a wide range of diseases, including diabetes, , viral infections, , tumor metastasis, and lysosomal storage disorders . Two iminosugar-based drugs have been approved: N -hydroxyethyldeoxynojirimycin ( N -hydroxyethyl DNJ, Miglitol, Figure ) in 1996 for the treatment of type II diabetes, and N -butyl-deoxynojirimycin ( N B-DNJ, Miglustat, Figure ) in 2003 as the first oral treatment for Gaucher disease, a severe lysosomal storage disorder.…”

Section: Introductionmentioning

confidence: 99%

A Versatile Approach to N-Alkylated 1,4-Dideoxy-1,4-imino-d-arabinitols and 1,4-Dideoxy-1,4-imino-l-xylitols

et al. 2011

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A versatile and concise synthesis of N-alkylated 1,4-dideoxy-1,4-imino-D-arabinitol and 1,4-dideoxy-1,4-imino-L-xylitol derivatives is described. These were prepared using pseudohemiketal lactams as key intermediates, which in turn were obtained from sucrose. The key intermediates were prepared by a diastereospecific tandem reaction which facilitated the introduction of various substituents on the nitrogen atom of the iminosugars.

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“…In some reports, methane was selectively converted into methanol over Ni(OH) 2 /CoO/Ag/C/CeO 2 anode via electrocatalytic oxidation . The initial success enables researchers to seek the feasibility and advantages of an electrocatalytic approach for methane conversion into higher carbon number products (such as ethanol).…”

Section: Experimental Findings On Methane To Ethanol Conversionmentioning

confidence: 99%

Progress in One-Step Conversion of Methane to Ethanol: Recent Techniques, Molecular Insights, Market and Future Perspective

Ali,

Shoeb,

Ansari

et al. 2023

Energy Fuels

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Methane, which is a greenhouse gas, is released into the atmosphere through anthropogenic activities. An increase in the methane content in the atmosphere is 25 times more harmful than carbon dioxide; hence, utilizing and converting it into liquid fuels (or ethanol) could be a viable option. Industrially, methane is oxidized into syngas, followed by Fischer−Tropsch synthesis, producing liquid hydrocarbons. The process requires harsh conditions (i.e., 700−800 °C and 20−30 bar) to activate the methane C−H bond and thus become energy intensive. Recently, newer techniques have demonstrated methane C−H bond activation followed by its conversion into ethanol near ambient conditions, owing to lesser energy requirements and reduced process cost. This review assembles recent developments in one-step methane-to-ethanol (MTE) conversions comprising thermocatalytic, photocatalytic, piezocatalytic, electrocatalytic, and nonthermal plasma (NTP) routes. Thermocatalytic processes provided the highest ethanol yield from methane, while piezocatalytic, photocatalytic, and electrocatalytic processes appeared economically attractive for large-scale employment because of ambient operating conditions. The NTP without a catalyst enabled better ethanol selectivity but with higher coke formation. The insights into each technique are critically discussed in light of experimental findings. The molecular studies helped to further elucidate the MTE conversion mechanism. Further, the fate of new techniques for the ethanol market (considering ethanol demand in transportation and chemical manufacturing) is presented. This review is crucial for researchers investigating MTE conversions (with optimized operating conditions) for increased ethanol production.

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Explicit theta correspondence for the dual pairs (O(p,q),Sp(2n,R)) with p+q=4

Cited by 4 publications

References 0 publications

High-performance liquid chromatography (advances in packing materials)

High-performance liquid chromatography (advances in packing materials)

A Versatile Approach to N-Alkylated 1,4-Dideoxy-1,4-imino-d-arabinitols and 1,4-Dideoxy-1,4-imino-l-xylitols

Progress in One-Step Conversion of Methane to Ethanol: Recent Techniques, Molecular Insights, Market and Future Perspective

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