scholarly journals Recent Developments in Industrial Mycozymes: A Current Appraisal

2021 ◽  
pp. 1-25
Author(s):  
Suresh Nath ◽  
Naveen Kango
Keyword(s):  
Recent Developments ◽  
A Current

Visible light-mediated organophotocatalyzed C–H bond functionalization reactions

2019 ◽  
Vol 17 (22) ◽  
pp. 5475-5489 ◽  
Author(s):  
Mustafa Uygur ◽  
Olga García Mancheño
Keyword(s):  
Visible Light ◽  
Bond Functionalization ◽  
Recent Developments ◽  
A Current

This review provides a current overview of the recent developments in the visible light mediated organophotocatalyzed C–H bond functionalization methodologies.

Microanalysis with Ultrasoft X-Radiations*

1961 ◽  
Vol 5 ◽  
pp. 285-305 ◽  
Author(s):  
Burton L. Henke
Keyword(s):  
Preliminary Report ◽  
Auger Electron ◽  
Low Energy ◽  
Diffraction Reflection ◽  
X Rays ◽  
Electron Spectrometer ◽  
Recent Developments ◽  
New Type ◽  
Low Energy Electron ◽  
A Current

AbstractThe diffraction, reflection, absorption, fluorescence, and the electronic emission that results from the interaction with ultrasoft X-rays (λ > 10 A) are presented as practical bases for microanalysis. Recent developments on sources and detectors for the ultrasoft X-radiations are described. A preliminary report on a current investigation on low-energy photo-Auger electron analysis and on a new type of low-energy electron spectrometer is also presented.

scholarly journals Recent Advancements in the Removal of Cyanotoxins from Water Using Conventional and Modified Adsorbents—A Contemporary Review

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2756
Author(s):  
Tauqeer Abbas ◽  
George William Kajjumba ◽  
Meena Ejjada ◽  
Sayeda Ummeh Masrura ◽  
Erica J. Marti ◽  
...  
Keyword(s):  
Water Treatment ◽  
Human Exposure ◽  
Future Outlook ◽  
Environmental Pressures ◽  
Treatment Processes ◽  
Current Review ◽  
Recent Developments ◽  
Modified Adsorbents ◽  
Design Simplicity ◽  
A Current

The prevalence of cyanobacteria is increasing in freshwaters due to climate change, eutrophication, and their ability to adapt and thrive in changing environmental conditions. In response to various environmental pressures, they produce toxins known as cyanotoxins, which impair water quality significantly. Prolonged human exposure to cyanotoxins, such as microcystins, cylindrospermopsin, saxitoxins, and anatoxin through drinking water can cause severe health effects. Conventional water treatment processes are not effective in removing these cyanotoxins in water and advanced water treatment processes are often used instead. Among the advanced water treatment methods, adsorption is advantageous compared to other methods because of its affordability and design simplicity for cyanotoxins removal. This article provides a current review of recent developments in cyanotoxin removal using both conventional and modified adsorbents. Given the different cyanotoxins removal capacities and cost of conventional and modified adsorbents, a future outlook, as well as suggestions are provided to achieve optimal cyanotoxin removal through adsorption.

The Morava K-theories of wreath products

1990 ◽  
Vol 107 (2) ◽  
pp. 309-318 ◽  
Author(s):  
John Hunton
Keyword(s):  
Homotopy Theory ◽  
Wreath Products ◽  
Stable Homotopy ◽  
Classifying Spaces ◽  
Classifying Space ◽  
Stable Homotopy Theory ◽  
Recent Developments ◽  
Positive Integers ◽  
Extended Power ◽  
A Current

In p-primary stable homotopy theory, recent developments have shown the importance of the Morava K-theory spectra K(n) for positive integers n. A current major problem concerns the behaviour of the K(n)-cohomologies on the classifying spaces of finite groups and on related spaces. In this paper we show how to compute the Morava K-theory of extended power constructions Here Xp is the p-fold product of some space X and Cp is the cyclic group of order p. In particular, if we take X as the classifying space BG for some group G, then Dp(X) forms the classifying space for , the wreath product of G by Cp.

The quantum electrical triangle

2005 ◽  
Vol 363 (1834) ◽  
pp. 2221-2247 ◽  
Author(s):  
John Gallop
Keyword(s):  
Low Temperature ◽  
Quantum Mechanical ◽  
Fundamental Constants ◽  
Current Standard ◽  
Voltage Standard ◽  
The Past ◽  
Recent Developments ◽  
Quantum Current ◽  
Primary Standards ◽  
A Current

The past 35 years have seen the development of an unexpected plethora of quantum electrical standards based on just two fundamental constants, e and h . First came a voltage standard based on the Josephson a.c. effect, in terms of which most maintained primary standards of voltage are defined. This was followed a decade later by the quantized Hall effect, based on the von Klitzing constant which allows the ohm to be maintained very precisely. It became clear 20 years ago that there is also a possible quantum current standard. This third standard has yet to play a full part in practical electrical metrology. However, recent developments suggest that there are many different possible manifestations in which such a current standard might be realized. The three quantum standards, taken together, define the quantum electrical triangle of standards which would allow the units to be realized in terms of different combinations of e and h . We summarize the very different physics behind the three standards, reviewing the present state of development in all three. Implications for the future are also considered, especially relating to ultra-low temperature, nanoscale and truly quantum mechanical versions of the standards.

Vernon Lees Theorie der ästhetischen Erfahrung: Grenzgänge der Empathie

2004 ◽  
Vol 22 (2) ◽  
Author(s):  
Renate Brosch
Keyword(s):  
Art History ◽  
Visual Art ◽  
Subjective Experience ◽  
Aesthetic Theory ◽  
Subjective Responses ◽  
Vernon Lee ◽  
Recent Developments ◽  
Current Shift ◽  
Opening Up ◽  
A Current

AbstractThe enormously prolific and diverse writer Vernon Lee (Violet Paget) has recently been rediscovered in English literary and cultural studies. However, her elision from art history remains to be corrected. This article reconsiders Lee’s theory of the beautiful which she referred to as »psychological aestheticism«. In the light of recent developments in aesthetic theory Lee’s ideas unfold considerable potential: their utilization of a concept of empathy inherent in subjective responses to art ties in with a current shift towards processual and performative evaluations of art rather than static and normative ones. Lee came very close to today’s understanding of visual art by locating symbolic meaning in subjective experience and thus opening up an entire range of spatial, psychological, emotional and communicative aspects of spectatorship pertinent to analysis. These aspects she developed in a more playful manner in her literary works. My article reads the ekphrastic encounter in one of Lee’s fantastic stories from her collection Hauntings as a negotiation of Lee’s aesthetic theory, concluding that her advanced ideas deconstructed an idealistic and implicitly hierarchical understanding of art.

Trends in Electron Energy Loss Spectroscopy

1977 ◽  
Vol 35 ◽  
pp. 228-229
Author(s):  
C. Colliex ◽  
P. Trebbia
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Materials Science ◽  
Analytical Technique ◽  
Recent Developments ◽  
Quantitative Results ◽  
Electron Microscopes ◽  
Electron Energy Loss ◽  
Primary Electrons

The physical foundations for the use of electron energy loss spectroscopy towards analytical purposes, seem now rather well established and have been extensively discussed through recent publications. In this brief review we intend only to mention most recent developments in this field, which became available to our knowledge. We derive also some lines of discussion to define more clearly the limits of this analytical technique in materials science problems.The spectral information carried in both low ( 0<ΔE<100eV ) and high ( >100eV ) energy regions of the loss spectrum, is capable to provide quantitative results. Spectrometers have therefore been designed to work with all kinds of electron microscopes and to cover large energy ranges for the detection of inelastically scattered electrons (for instance the L-edge of molybdenum at 2500eV has been measured by van Zuylen with primary electrons of 80 kV). It is rather easy to fix a post-specimen magnetic optics on a STEM, but Crewe has recently underlined that great care should be devoted to optimize the collecting power and the energy resolution of the whole system.

Resolving Crystallites in Zirconium Oxide Films

1969 ◽  
Vol 27 ◽  
pp. 140-141
Author(s):  
R.A. Ploc
Keyword(s):  
Electron Microscope ◽  
Inelastic Scattering ◽  
Zirconium Oxide ◽  
Oxide Films ◽  
Optic Axis ◽  
Objective Lens ◽  
Microscope Objective ◽  
Linear Optic ◽  
A Current ◽  
Microscope Objective Lens

The optic axis of an electron microscope objective lens is usually assumed to be straight and co-linear with the mechanical center. No reason exists to assume such perfection and, indeed, simple reasoning suggests that it is a complicated curve. A current centered objective lens with a non-linear optic axis when used in conjunction with other lenses, leads to serious image errors if the nature of the specimen is such as to produce intense inelastic scattering.

Structure of Palladium Single-Crystal Films Prepared by Flash Evaporation onto (001) NaCl Substrates

1970 ◽  
Vol 28 ◽  
pp. 456-457
Author(s):  
L. E. Murr ◽  
G. Wong
Keyword(s):  
Single Crystal ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
High Rate ◽  
Flash Evaporation ◽  
Optimum Load ◽  
Single Crystal Films ◽  
Crystal Films ◽  
A Current

Palladium single-crystal films have been prepared by Matthews in ultra-high vacuum by evaporation onto (001) NaCl substrates cleaved in-situ, and maintained at ∼ 350° C. Murr has also produced large-grained and single-crystal Pd films by high-rate evaporation onto (001) NaCl air-cleaved substrates at 350°C. In the present work, very large (∼ 3cm2), continuous single-crystal films of Pd have been prepared by flash evaporation onto air-cleaved (001) NaCl substrates at temperatures at or below 250°C. Evaporation rates estimated to be ≧ 2000 Å/sec, were obtained by effectively short-circuiting 1 mil tungsten evaporation boats in a self-regulating system which maintained an optimum load current of approximately 90 amperes; corresponding to a current density through the boat of ∼ 4 × 104 amperes/cm2.

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