scholarly journals Recent Advances in the Differentiation of Lactose-fermenting (Gas-producing) Bacilli with special reference to the Examination of Water and Food Products

1919 ◽  
Vol 18 (1) ◽  
pp. 46-58 ◽  
Author(s):  
Denys R. Wood

1. Investigation by American bactriologists have shown that the lactose-fermenting (gas-producing) bacilli can be divided into two main types distinguishabel by the methyl-red and Voges-Proskauer reactions.2. The methyl-red- Voges-Proskauer + type are shwon to be rare in human and animal faeces, more common in surface water, milk and sewage, and the predominant type in soil and grain, and to be more resistant than the methyl-red + Voges-Proskauer-type.3. Investigations by the author of this paper confirm their findings as regards human and animal faeces, water, milk and grain. An investigation of the types present in soil is being undertaken and it is hoped to publish an account of this later. Already the “M.R.—” type has been found to predominate in four out of six samples of soil.4. In the present investigation organisms of the “M.R.—” type were found in 66 samples of water out of a total of 200 containing lactose-fermenters, and in 41 samples containing this type no evidence of recent contamination could be adduced by the search for organisms of the “M.R.+” type ofStreptococci. Judgment of the water was therfore liable to modifiction in 20% of these samples by the recognition of this type.5. Twenty-nineout of the 66 samples containing organisms of the “M.R.—” type were from sources of good repute, most of them from public supplies.6. The presence of lactose-formenters of the “M.R.—”“V.P.+” type must be regarded with considerable less disfavour than the presence of “M.R.+” “V.P.—” organisms, and the application of tests for the recognition of these types is impotant. It is suggested that these tests should be included in all routine examinations of water and food products.In conclusion I have pleasue in acknowledging my indebtedness to Dr. W.G.Savage for calling my attention to the reserches of American bacteriologist and for many valuable suggestions he has made in connection with this work.

2008 ◽  
Vol 60 (1) ◽  
pp. 75-89 ◽  
Author(s):  
Mady A. Ismail ◽  
Hannington K. Taligoola ◽  
Rebbecca Nakamya

1993 ◽  
Vol 28 (2) ◽  
pp. 17-26 ◽  
Author(s):  
V. Eroǧlu ◽  
A. M. Saatçi

Recent advances made in the reuse of pulp and paper industry sludges in hardboard production are explained. Data obtained from pilot and full-scale plants using primary sludge of a pulp and paper industry as an additive in the production of hardboard is presented. An economic analysis of the reuse of pulp and paper primary sludge in hardboard manufacturing is given. The quality of the hardboard produced is tested and compared with the qualities of the hardboard produced by the same plant before the addition of primary sludge. The hardboard with primary sludge additive has been used in Turkey for about a year in the manufacturing of office and home furniture. The results are very satisfactory when the primary sludge is used at 1/4 ratio.


2020 ◽  
Vol 27 ◽  
Author(s):  
Joana Santos ◽  
M. Fernanda Proença ◽  
Ana Joao Rodrigues ◽  
Patricia Patrício ◽  
H. Sofia Domingues

: Paroxetine is a potent inhibitor of serotonin reuptake and is widely prescribed for the treatment of depression and other neurological disorders. The synthesis of paroxetine and the possibility to prepare derivatives with a specific substitution pattern that may allow their use as biological probes, is an attractive topic especially for medicinal chemists engaged in neurosciences research. Considering the extensive work that was developed in the last decade on the total synthesis of paroxetine, this review summarizes the most important contributions in this field, organized according to the reagent that was used as starting material. Most of the methods allowed to prepare paroxetine in 4-9 steps with an overall yield of 9-66%. Despite the progress made in this area, there is still room for improvement, searching for new eco-friendly and sustainable synthetic alternatives.


2021 ◽  
pp. 106359
Author(s):  
Jonas da Silva Sousa ◽  
Hélio Oliveira do Nascimento ◽  
Hiago de Oliveira Gomes ◽  
Ronaldo Ferreira do Nascimento

1994 ◽  
Vol 72 (11) ◽  
pp. 1317-1319
Author(s):  
Newman L. Stephens

Research in smooth muscle contraction has shown remarkable progress over the last 5 years. Striking advances have been made in the areas of biochemical regulation of contraction, centering on myosin light chain kinase activity, and of biophysical delineation of the contractile process at the actomyosin level by use of the newly developed motility assay. The purpose of the symposium held at Minaki, Ont., was to obtain a comprehensive reporting of the recent advances made in the area of smooth muscle contraction. Specifically, advances in the areas of biophysics of contraction, energetics, and contractile and regulator proteins (including the interesting newcomers caldesmon and calponin) and the changes that occur in pathophysiological entities such as asthma, hypertension, anaphylactic shock, high-altitude hypoxia, and persistent pulmonary hypertension of the newborn were presented.Key words: smooth muscle biophysics, smooth muscle biochemistry, energetics of smooth muscle, pathophysiology of smooth muscle.


1957 ◽  
Vol 22 ◽  
pp. 37-84 ◽  
Author(s):  
J. F. S. Stone ◽  
L. C. Thomas

Twenty years have elapsed since H. C. Beck and the present writer published a preliminary paper on the origin of British faience beads with special reference to those of the segmented variety and, except for the discovery and recognition of many new specimens over much wider areas it may be said that nothing has emerged to alter materially the general conclusions there enunciated that an Egyptian origin was the most likely for a number of the beads and that their dissemination to the British Isles took place during the Eighteenth Dynasty around about 1400 B.C.At the time of writing we not unnaturally concentrated on British specimens, as European analogues appeared to be conspicuously absent, and confined our attention primarily to morphological characters. We had, however, projected a wider study to embrace faience objects in general and, if possible, to adduce spectrographic evidence as further proof of identity or otherwise. Unfortunately the sudden death of Mr Beck in 1939 and the intervention of the war years greatly retarded progress in this direction. But the rapid recognition of old finds and the accumulation of new ones, mostly in Europe, in post-war years, coupled with a number of spectrographic analyses that have since been carried out with the help of Mr L. C. Thomas, now renders it desirable to review such progress as has been made in this most difficult and complex subject.


F1000Research ◽  
2019 ◽  
Vol 8 ◽  
pp. 1910
Author(s):  
Bob Phillips

A major consequence of the intensive multi-modal chemotherapy commonly used to treat malignancies in childhood is life-threatening infection, frequently during periods of profound neutropenia. Recent advances have been made in all areas of management, from trying to prevent infection to getting patients off antimicrobials and home again in the shortest, safest way. Potential avenues of further research are outlined for readers to be aware of in the next few years.


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