scholarly journals II. On the change of absorption produced by fluorescence

About two years ago, in the spring of 1895, in the course of a conversation with Professor J. H. Poynting on the nature of the phenomenon of fluorescence, in the study of which I was at the time beginning to engage, the suggestion was thrown out by him that possibly fluorescent bodies absorb differently, according as they are fluorescing or not, the rays which they give out whilst fluorescing, thus that a body A would absorb differently, according as it is fluorescing or not, the rays from a similar body B in a state of fluorescence. Some fluorescent bodies undoubtedly do, others do not, absorb, except to a very small extent, the rays which they emit. A strong solution of fluorescin or eosin, for instance, hardly permits its fluorescent light to penetrate even a very small thickness. Glass coloured with oxide of uranium is much more transparent, but sulphate of quinine hardly absorbs these rays at all. The question was whether during the act of fluorescing any change is produced in the nature of the absorption itself, that is, whether during fluorescence there is an increase or diminution of absorption in that part of the spectrum where the emitted rays lie. For instance, with uranium glass the radiation takes place chiefly between the D and E lines, so that the absorption power for rays may be different according as the body is examined in the dark or in daylight in this part of the spectrum. Of the five bright bands of which the radiation consists, three lie between the D and E lines, the other two being of less refrangibility and of less intensity in the red and orange (Stokes, ‘Phil. Trans.,' 1852). With the spectroscope I have used I have not been able to see the band in the red, but the other four were quite distinct. The spectrum seemed to me to be of the nature of maxima and minima.

1986 ◽  
Vol 43 (7) ◽  
pp. 1312-1317 ◽  
Author(s):  
S. E. McGladdery

The fillets and body cavities of the 305 Atlantic herring (Clupea harengus harengus) collected from six locations around the east coast of Canada were examined for Anisakis simplex larvae. The fillets were checked by candling over a fluorescent light and by digestion in a pepsin – HCl acid solution. The results demonstrated the inaccuracy of candling as a technique for detecting A. simplex larvae in the musculature of herring. Anisakis simplex larvae were found in the muscle of 7.9% of the herring examined, and all herring with fillet infections were from one sample collected from southern Newfoundland in February 1983. All had over 15 larvae in the body cavity. Since none of the other herring examined had over eight larvae in the body cavity, I concluded that most Canadian Atlantic herring are safe for consumption raw, salted, smoked, or pickled. The results from Canadian Atlantic herring were compared with those from herring collected by Smith and Wootten from around Britain. The only Canadian Atlantic herring found with a similar level of infection to those were from southern Newfoundland.


1897 ◽  
Vol 61 (369-377) ◽  
pp. 485-487 ◽  

If a body, A, of some fluorescent substance, such as uranium glass, be transmitting light from a similar body, B, which is fluorescing, the amount of light transmitted by A from B seems quite different, according as A is fluorescing or not. There appears to exist in a dilute solution of fluorescine or eosine a small difference, but a strong solution of either does not permit its fluorescent light to penetrate, except a very small thickness of the liquid, whether fluorescing or not. Sulphate of quinine is too transparent to the luminous rays, so that even if a change did exist it could hardly be detected. The case is otherwise with uranium glass, in which the effect is well marked.


Author(s):  
Sunandar Macpal ◽  
Fathianabilla Azhar

The aims of this paper is to explain the use of high heels as an agency for a woman's body. Agency context refers to pain in the body but pain is perceived as something positive. In this paper, the method used is a literature review by reviewing writings related to the use of high heels. The findings in this paper that women experience body image disturbance or anxiety because they feel themselves are not beautiful or not attractive. The use of high heels, makes women more attractive and more confident, on the other hand the use of high heels actually makes women feel pain and discomfort. However, for the achievement of beauty standards, women voluntarily allow their bodies to experience pain. However, the agency's willingness to beauty standards here is meaningless without filtering and directly accepted. Instead women keep negotiating with themselves so as to make a decision why use high heels.


2018 ◽  
Vol 8 (4) ◽  
pp. 28-33
Author(s):  
Mao Nguyen Van ◽  
Thao Le Thi Thu

Background: In practice it was difficult or impossible to have a correct diagnosis for the lymphoid proliferation lesions based on only H.E standard histopathology. In addition to histopathology, the application of immunohistochemistry was indispensable for the definitive diagnosis of the malignant or benign tumours and the origin of the tumour cells as well. Objectives: 1. To describe the gross and microscopic features of the suspected lesions of lymphoma; 2. To asses the expression of some immunologic markers for the diagnosis and classification of the suspected lesions of lymphoma. Materials and Method: Cross-sectional research on 81 patients diagnosed by histopathology as lymphomas or suspected lesions of lymphoma, following with immunohistopathology staining of 6 main markers including LCA, CD3, CD20, Bcl2, CD30 and AE1/3. Results: The most site was lymph node 58.1% which appeared at cervical region 72.3%, then the stomach 14.9% and small intestine 12.4%. The other sites in the body were met with lower frequency. Histopathologically, the most type of the lesions was atypical hyperplasia of the lymphoid tissue suspecting the lymphomas 49.4%, lymphomas 34.5%, the other diagnoses were lower including inflammation, poor differentiation carcinoam not excluding the lymphomas, lymphomas differentiating with poor differentiation carcinomas. Immunohistochemistry showed that, LCA, CD3, CD20, Bcl2, CD30 and AE1/3 were all positive depending on such type of tumours. The real lymphomas were 48/81 cases (59.3%), benign ones 35.8% and poor differentiated carcinomas 4.9%. Conclusion: Immunohistochemistry with 6 markers could help to diagnose correctly as benign or malignant lesions, classify and determine the origin of the tumour cells as lymphocytes or epithelial cells diagnosed by histopathology as lymphomas or suspected lesions of lymphomas. Key words: histopathology, immunohistochemistry, lymphomas, poor differentiated carcinomas, hyperplasia, atypicality


Author(s):  
Zoran Vrucinic

The future of medicine belongs to immunology and alergology. I tried to not be too wide in description, but on the other hand to mention the most important concepts of alergology to make access to these diseases more understandable, logical and more useful for our patients, that without complex pathophysiology and mechanism of immune reaction,we gain some basic insight into immunological principles. The name allergy to medicine was introduced by Pirquet in 1906, and is of Greek origin (allos-other + ergon-act; different reaction), essentially representing the reaction of an organism to a substance that has already been in contact with it, and manifested as a specific response thatmanifests as either a heightened reaction, a hypersensitivity, or as a reduced reaction immunity. Synonyms for hypersensitivity are: altered reactivity, reaction, hypersensitivity. The word sensitization comes from the Latin (sensibilitas, atis, f.), which means sensibility,sensitivity, and has retained that meaning in medical vocabulary, while in immunology and allergology this term implies the creation of hypersensitivity to an antigen. Antigen comes from the Greek words, anti-anti + genos-genus, the opposite, anti-substance substance that causes the body to produce antibodies.


Author(s):  
Isabella Image

This chapter discusses Hilary’s dichotomous body–soul anthropology. Although past scholars have tried to categorize Hilary as ‘Platonic’ or ‘Stoic’, these categories do not fully summarize fourth-century thought, not least because two-way as well as three-way expressions of the human person are also found in Scripture. The influence of Origen is demonstrated with particular reference to the commentary on Ps. 118.73, informed by parallels in Ambrose and the Palestinian Catena. As a result, it is possible to ascribe differences between Hilary’s commentaries to the fact that one is more reliant on Origen than the other. Nevertheless, Hilary’s position always seems to be that the body and soul should be at harmony until the body takes on the spiritual nature of the soul.


1997 ◽  
Vol 60 (6) ◽  
pp. 639-643 ◽  
Author(s):  
FUENG-LIN KUO ◽  
JOHN B. CAREY ◽  
STEVEN C. RICKE

The effects were investigated of 254-nm UV radiation on populations of Salmonella typhimurium, aerobes, and molds on the shells of eggs. In the first experiment, the CFU of attached S. typhimurium cells on unwashed clean shell eggs were determined after 0, 1, 3, 5, and 7 min of UV treatment (620 μW/cm2) on both ends of the egg. All UV treatments significantly reduced S. typhimurium CFU (P < .01). UVtreatment (620 μW/cm2) in 1-min alternating light and dark cycles for 5 min (three light and two dark) was compared to 0, 3, and 5 min of UV treatment. No significant differences in microbial populations were observed among light and dark cycles and the other UV treatments. In a subsequent experiment, the same UV treatments were utilized to evaluate photoreactivation. After UV exposure, eggs were exposed to 1 h of fluorescent light or I h of darkness or cultured immediately. S. typhimurium CFU were significantly (P < .01) reduced by the UV treatments. However, no significant differences between microbial populations exposed to UV treatment and UV radiation plus photoreactivation were detected. For studies of aerobic bacteria and molds, different UV treatment times (0, 15, and 30 min) at the intensity of 620 μW/cm2 and different intensities (620, 1350, and 1720 μW/cm2) for 15 min were evaluated. Mold CFU per egg were either 0 or 1 for all UV treatments and a 99% reduction of CFU of aerobic bacteria per egg were observed for all UV treatments. It appears from these studies that UV light can significantly reduce populations of S. typhimurium, aerobes, and molds on shell eggs.


Author(s):  
D. T. Gauld ◽  
J. E. G. Raymont

The respiratory rates of three species of planktonic copepods, Acartia clausi, Centropages hamatus and Temora longicornis, were measured at four different temperatures.The relationship between respiratory rate and temperature was found to be similar to that previously found for Calanus, although the slope of the curves differed in the different species.The observations on Centropages at 13 and 170 C. can be divided into two groups and it is suggested that the differences are due to the use of copepods from two different generations.The relationship between the respiratory rates and lengths of Acartia and Centropages agreed very well with that previously found for other species. That for Temora was rather different: the difference is probably due to the distinct difference in the shape of the body of Temora from those of the other species.The application of these measurements to estimates of the food requirements of the copepods is discussed.


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