Recent Experimental Work in Hop Growing and Drying as Regards Quality from the Master Brewer's Point of View

1953 ◽  
Vol 11 (1) ◽  
pp. 130-133
Author(s):  
George Goerl
Keyword(s):  
Experimental Work ◽  
Point Of View ◽  
Recent Experimental Work

scholarly journals ROTATIONAL TUNNELLING SPECTROSCOPY WITH NEUTRONS

1993 ◽  
Vol 07 (16n17) ◽  
pp. 3113-3151 ◽  
Author(s):  
C.J. CARLILE ◽  
M. PRAGER
Keyword(s):  
Experimental Work ◽  
Point Of View ◽  
Theoretical Point ◽  
Instrument Performance ◽  
New Approaches ◽  
Recent Experimental Work ◽  
Fruitful Field

Neutron tunnelling spectroscopy has been a very fruitful field for almost two decades and is still expanding into new areas, both experimentally and theoretically. The development of the topic is reviewed from the theoretical point of view, highlighting new approaches, and selected examples of more recent experimental work are presented. A brief discussion of instrument performance and experimental requirements is given.

XXVII.—The Inheritance of Long and Short Wings in the Weevil, Sitona hispidula, with a Discussion of Wing Reduction among Beetles

1928 ◽  
Vol 55 (3) ◽  
pp. 665-735 ◽  
Author(s):  
Dorothy J. Jackson
Keyword(s):  
Experimental Work ◽  
Adult Stage ◽  
Point Of View ◽  
The Other ◽  
Wing Dimorphism ◽  
Wing Reduction ◽  
Hereditary Factors ◽  
The Subject ◽  
The One ◽  
Evolutionary Point

It is well known that in many orders of typically winged insects species occur which in the adult stage are apterous or have the wings so reduced in size that flight is impossible. Sometimes the reduction of wings affects one sex only, as in the case of the females of certain moths, but in the majority of cases it is exhibited by both sexes. In many instances wing dimorphism occurs irrespective of sex, one form of the species having fully developed wings and the other greatly reduced wings. In some species the wings are polymorphic. The problem of the origin of reduced wings and of other functionless organs is one of great interest from the evolutionary point of view. Various theories have been advanced in explanation, but in the majority of cases the various aspects of the subject are too little known to warrant discussion. More experimental work is required to show how far environmental conditions on the one hand, and hereditary factors on the other, are responsible for this phenomenon. Those species which exhibit alary dimorphism afford material for the study of the inheritance of the two types of wings, but only in a few cases has this method of research been utilized.

Taxonomic studies on Archigetes Leuckart, 1878 (Cestoda: Caryophyllaeidae)

Parasitology ◽  
1965 ◽  
Vol 55 (3) ◽  
pp. 439-451 ◽  
Author(s):  
C. R. Keneedy
Keyword(s):  
Life History ◽  
Experimental Work ◽  
Nature Conservancy ◽  
The Family ◽  
Single Genus ◽  
Biological Characters ◽  
Taxonomic Studies ◽  
Relationship Of ◽  
Recent Experimental Work ◽  
The Relationship

Recent experimental work has indicated that species of Archigetes are capable of infecting and maturing in fishes in addition to tubificids.The genus Archigetes is re-defined on the basis of morphological and biological characters, with particular emphasis on recent life history studies. All species capable of neotenic development have been re-united in a single genus.A description of all species of Archigetes together with a key for their identification are included. New synonomies are discussed.The relationship of Archigetes to other genera of the family is briefly considered, and it is concluded that it forms the terminal stage in a series showing the attainment of neotenic development.I wish to thank Professor R. J. Pumphrey in whose Department the work was carried out, and Dr J. C. Chubb for advice and help in the preparation of this manuscript. I am also grateful to Professor K. Berg and Dr R. L. Calentine for the loan of specimens. The work was carried out during the tenure of a Nature Conservancy Research Studentship.

Acceptability ratings cannot be taken at face value

2020 ◽  
pp. 189-214
Author(s):  
Carson T. Schütze
Keyword(s):  
Rate Of Convergence ◽  
Experimental Work ◽  
Rates Of Convergence ◽  
Original Method ◽  
Journal Articles ◽  
True Rate ◽  
Acceptability Judgments ◽  
Critical Words ◽  
Recent Experimental Work

This chapter addresses how linguists’ empirical (syntactic) claims should be tested with non-linguists. Recent experimental work attempts to measure rates of convergence between data presented in journal articles and the results of large surveys. Three follow-up experiments to one such study are presented. It is argued that the original method may underestimate the true rate of convergence because it leaves considerable room for naïve subjects to give ratings that do not reflect their true acceptability judgments of the relevant structures. To understand what can go wrong, the experiments were conducted in two parts. The first part had visually presented sentences rated on a computer, replicating previous work. The second part was an interview where the experimenter asked the participants about the ratings they gave to particular items, in order to determine what interpretation or parse they had assigned, whether they had missed any critical words, and so on.

Numerical Prediction of Various Cavitation Erosion Mechanisms

2020 ◽  
Vol 142 (4) ◽  
Author(s):  
Ignacijo Biluš ◽  
Marko Hočevar ◽  
Matevž Dular ◽  
Luka Lešnik
Keyword(s):  
Experimental Work ◽  
High Speed ◽  
Cavitation Erosion ◽  
Cavitating Flow ◽  
Numerical Prediction ◽  
Quantitative Prediction ◽  
Navier Stokes ◽  
Erosion Mechanisms ◽  
Recent Experimental Work ◽  
Collapse Phase

Abstract Numerical prediction of cavitation erosion is a great scientific and technological challenge. In the past, many attempts were made—many successful. One of the issues when a comparison between a simulation and erosion experiments is made, is the great difference in time scale. In this work, we do not attempt to obtain quantitatively accurate predictions of erosion process but concentrate qualitatively on cavitation mechanisms with quantitative prediction of pressure pulses which lead to erosion. This is possible, because of our recent experimental work on simultaneous observation of cavitating flow and cavitation erosion by high speed cameras. In this study, the numerical simulation was used to predict details of the cavitation process during the vapor collapse phase. The fully compressible, cavitating flow simulations were performed to resolve the formation of the pressure waves at cavitation collapse. We tried to visualize the mechanisms and dynamics of vapor structures during collapse phase at the Venturi geometry. The obtained results show that unsteady Reynolds-averaged Navier–Stokes (URANS) simulation of cavitation is capable of reproducing four out of five mechanisms of cavitation erosion, found during experimental work.

1/8 PROBLEMS IN THE La-, Bi- AND Y-BASED CUPRATES AND NEW ANOMALIES IN THE OVERDOPED REGION OF THE La-BASED CUPRATE

1999 ◽  
Vol 13 (29n31) ◽  
pp. 3546-3551 ◽  
Author(s):  
Y. KOIKE ◽  
M. AKOSHIMA ◽  
T. ADACHI ◽  
N. KAKINUMA ◽  
T. NOJI ◽  
...  
Keyword(s):  
Oxygen Content ◽  
Experimental Work ◽  
Low Temperatures ◽  
Hole Concentration ◽  
Spin Fluctuations ◽  
Slowing Down ◽  
Recent Experimental Work

Recent experimental work on the 1/8 problem by our group is reviewed not only in the La-based cuprate but also in the Bi- and Y-based ones. In the partially Zn-substituted Bi 2 Sr 2 Ca 1-x Y x( Cu 1-y Zn y)2 O 8+δ, we have found anomalous suppression of superconductivity at x=0.30-0.35, where the hole concentration per Cu p~1/8. Moreover, it has been revealed from the μSR measurements that the Cu-spin fluctuations exhibit slowing-down behavior at low temperatures in these samples. These results are suggestive of the stripe correlations of holes and spins tending to be pinned by Zn at p~1/8 in the Bi-nbased cuprate as well as in the La-based cuprate. In Y 1-x Ca x Ba 2 Cu 3 O 7-δ, the 60 K plateau of Tc has been found not to be correlated with the oxygen content but to be interpreted as being due to the suppression of superconductivity at p~1/8. Accordingly, we conclude that the 1/8 problem is common to all high-Tc cuprates with the CuO 2 plane. Moreover, we have found transport and Tc anomalies around x=0.22 in La 2-x Sr x Cu 1-y M y O 4 ( M = Zn , Ga), suggesting a possibility that an order of holes and/or spins is formed or fluctuates in these samples in the overdoped region.

Hairpin and hammerhead ribozymes: how different are they?

2002 ◽  
Vol 30 (6) ◽  
pp. 1116-1119 ◽  
Author(s):  
J. M. Burke
Keyword(s):  
Metal Ions ◽  
Conformational Changes ◽  
Experimental Work ◽  
Hammerhead Ribozyme ◽  
Active Conformation ◽  
Hairpin Ribozyme ◽  
Hammerhead Ribozymes ◽  
Active Structure ◽  
Catalytic Function ◽  
Recent Experimental Work

Recent experimental work on the hairpin and hammerhead ribozymes suggests that they have more similarities than previously suspected. Notably, each is now known to function as a true RNA catalyst, not requiring metal ions for folding or catalytic function. The active conformation of the hairpin ribozyme has been established by crystallography, and is well supported by biochemical and biophysical evidence that has identified conformational changes and key nucleotides required for catalysis. Analogous work is under way to establish the active structure of the hammerhead ribozyme.

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