Search

Energy calculations for manufacture of paper from logs and waste papers are reported based on data on energy use from the Canadian Census of Manufactures and estimates for collection and de-inking of waste. The energy requirement of the recycling technology explored exceeds the energy requirement of manufacture from logs by 33%. It appears that forest conservation through recycling has a fossil fuel cost.

1.1. Filter paper electrophoretic analysis of the serum and urine proteins in thirty-five cases of multiple myeloma has been carried out. In all thirty-five cases characteristic protein abnormalities were observed; seventeen cases showing homogeneous peaks in both the serum and urine, eleven cases in serum only, seven cases in urine only. 2.2. All urine samples showing a positive Bence-Jones protein reaction also displayed a characteristic electrophoretic abnormality. Eight of the twenty-four electrophoretically positive urine samples were Bence-Jones protein negative by the usual tests. Because of the relative simplicity of urine electrophoresis by the filter paper technic, this test is considered to be a practical clinical procedure. 3.3. Two cases are presented in detail because certain atypical clinicopathologic features of their disease patterns possibly assist in an understanding of the relationship of the plasma cell dyscrasias to chronic lymphatic leukemia and the lymphosarcomas. A third case, which demonstrates the value of serial electrophoretic studies in myeloma, is also presented. 4.4. Consideration is given to some of the physicochemical properties of the myeloma serum and urine proteins, and to the possible nature of their interrelationship.

Attention is drawn to the greater optical uniformity of filter paper by reflected light than by transmitted light. The relative merits of employing reflected light and transmitted light, both on dry and transparent paper, are considered from the standpoints of ease of calculation, instrumental convenience and error. Under the conditions described here, in which an aperture of only 3 mm × 3 mm is used, the reflection method on dry paper is recommended. Measurements may also be taken on transparent paper. This causes an increase in error when transmission is used, but decreases the error when reflection is used.

A theory previously developed by the author to describe the horizontal spreading of liquids in paper has been applied to the case of a liquid rising by capillary action in a vertical strip of filter paper. The phenomenon is complicated by a surface roughness effect which had to be taken into account. The theory leads to simple expressions for the rate of rise and the distribution of liquid which are in agreement with experiment. When gravity can be neglected, the height of rise is proportional to the square root of the time. When gravity is important, the height of rise is a more complex function of time than the simple square root dependence. In addition, the liquid approaches a limiting height.

Filter paper electrophoretic analyses of serum were carried out in a series of eighteen proved cases of multiple myeloma, twenty-three normal controls and 130 patients with non-myelomatous diseases, and compared with the results of classical Tiselius electrophoresis and chemical fractionation. Abnormal electrophoretic patterns were found in all of the cases of multiple myeloma studied, and tall narrow spikes representing abnormal proteins with varying mobilities in the globulin range were demonstrated in 78 per cent. The latter were considered diagnostic of myelomatosis since similar patterns have not been described in any other disease and since none were observed in any of the present controls. In six of the eighteen cases the diagnosis was first established on the basis of these electrophoretic patterns and subsequently confirmed by bone marrow biopsy. In eight others they were merely confirmatory in previously diagnosed cases. Of special interest were the diagnostic patterns found in four patients in whom myelomatosis was not suspected. There were significant quantitative differences between the results obtained by filter paper and classical electrophoresis, and the results of both differed from those of chemical fractionation. However, the diagnostic peaks of myelomatosis were equally well demonstrated by both electrophoretic methods. It is concluded (1) that the electrophoretic patterns of serum obtained by both the filter paper and Tiselius methods exhibit highly characteristic peaks in a high proportion of individuals with multiple myeloma, (2) that such patterns are of great diagnostic value and (3) that the filter paper method offers the advantages of simplicity, low cost and speed, without any loss in sensitivity or specificity, which make it especially valuable for screening large numbers of specimens in patients suspected of having myelomatosis.

A new technique for measuring peak pressures of repeated high amplitude sound pulses in liquids is described. The method involves the transfer of carbon from carbon paper to white `printing-out paper' as a result of the pressure exerted by a pulse. The darkening produced on the white paper was estimated photometrically and used as a measure of the peak pressure in the pulse. Using this procedure, measurements were made in a water column of pulse peak pressures up to 700 atm.

In few conditions is the electrophorogram of serum proteins capable alone of deciphering the diagnosis. In conjunction with the assembled clinical data and relevant applied pathological tests the definition of the disease is often clarified. The patterns as observed by the applied pathologist are serially discussed and the importance of the variations in different fractions presented. In several instances, exemplified by liver disease, the assistance rendered toward prognosis has been considerable. Perhaps the most clearcut diagnosis is possible in the agammaglobulinaemia syndrome which is immediately evident by the technique of paper electrophoresis. Current advances are mainly in the direction of estimating the protein-bound carbohydrate and lipid constituents which are believed to reflect the abnormalities in several infections and metabolic diseases. Utilisation of non-ionic detergents has also allowed separation of subfractions of the globulins into numerous new components, including lipo-proteins, some of which had been previously observed during the application of improved buffer systems designed to restrict interference of heavy metals and to facilitate accentuation of fractions having intermediate mobility.

An indirect immunofluorescence test using small discs (0.4 cm in diameter) cut from blood smears on filter paper is described. Discs plus three drops of phosphate-buffered saline are laid on antigenic areas on slides, which are then incubated. During incubation, eluted antibodies react with antigen. The method was tested with 10 eluates from healthy persons and with 30 eluates from three groups of 10 patients with Chagas’ disease, schistosomiasis Mansoni and South American blastomycosis, respectively. Sera from the same blood samples were tested also by conventional indirect immunofluorescence tests. Both tests gave similar results. The method proposed is useful as a rapid qualitative screening test when dealing with a large number of samples.

By the method of paper electrophoresis a comparative quantitative study was made of the sundanophilic serum lipids of two groups of persons; one group consisted of twenty-one patients who had had previous myocardial infarction, the other of eighteen women with no clinically important arteriosclerosis. The electrolipograms in all cases revealed two zones, the larger probably corresponding to β-lipoproteins, the smaller to α-lipoproteins. In the atherosclerotic group the major lipid band constituted a larger fraction of the total lipid than in the control group. The major lipid band of one-third of the atherosclerotic persons extended farther with respect to the β-globulin.

High rates of acetylene (C 2 H 2 ) reduction (nitrogenase activity) were observed in woodroom effluent from a neutral sulfite semi-chemical mill under aerobic (up to 644 nmol of C 2 H 4 produced per ml per h) and under anaerobic (up to 135 nmol of C 2 H 4 produced per ml per h) conditions. Pasteurized effluent developed C 2 H 2 reduction activity when incubated under anaerobic but not under aerobic conditions. Activities were increased by addition of 0.5 to 3.0% glucose or xylose. Enrichment and enumeration studies showed that N 2 -fixing Azotobacter and Klebsiella were abundant, and N 2 -fixing Bacillus was present. Of 129 isolates of Klebsiella from pulp mills, lakes, rivers, and drainage and sewage systems, 32% possessed nitrogen-fixing ability.

A RADIOIMMUNOASSAY FOR HUMAN PITUITARY LUTEINISING HORMONE USING PAPER CHROMATO-ELECTROPHORESIS

Summary The electrophoretic pattern of serum proteins has been studied in 30 infants suffering from toxicosis. During the stage of acute dehydration the main changes were a moderate or marked increase of alpha globulin, particularly of the α2 fraction and a decrease of albumin. In some cases there was also an increase of the gamma globulin. During recovery the alpha globulin decreases while albumin increases. However, the return to normal of the electrophoretic pattern is not always achieved when clinical recovery occurs. The absolute amounts of total serum proteins have also been estimated and their significance has been discussed. Electrophorese sur papier des proteines du serum au cours de la toxicose. L'aspect electrophoretique des proteines du serum a eteetudie chez 30 ehfants presentant une toxicose. Au cours de la periode de deshydratation aigue, on a pu noter une augmentation nette des alphaglobulines (en particulier la fraction alpha 2), et une diminution de l'albumine. Dans quelques cas, on a pu noter aussi une augmentation des gammaglobulines. La diminution des alphaglobulines, et l'augmentation de l'albumine est survenue avec la guerison. Neanmoins, le retour a la normale de la courbe d'electrophorese n'est pas toujours acheve au moment de la guerison elinique. Papierelektrophorese von Serum-Protein bei Sauglingstoxikose. Die Elektrophoresebefunde von Serumproteinen sind bei 30 an Toxikose leidenden Sauglingen untersucht worden. Wahrend des Stadiums der akuten Dehydration waren die Hauptveranderungen eine massige oder ausgepragte Zunahme des Alpha-Globulins, insbesondere der α2-Fraktion und eine Abnahme des Albumins. In einigen Fallen be-stand auch eine Zunahme des Gamma-Globulins. Wahrend der Genesung nimmt das Alpha-Globulin ab, wahrend das Albumin ansteigt. Jedoch ist der Ruckgang zum nor-malen elektrophoretischen Bild nicht immer vollendet wenn die klinische Genesung eintritt. Electroforesis en papel de las proteinas sericas en la toxicosis. Se estudiaron las imagenes electroforeticas de las proteinas sericas en 30 lactantes afectos de toxicosis. Durante el periodo de deshidratacion aguda, los cambios mas notables fueron un moderado o marcado aumento de la alfa globulina, especialmente de alfa 2. Durante la convalecencia, la fraecion alfa globulina disminuyo mientras au-mentaba la albumina. Sin embargo, la vuelta a la imagen electroforetica normal no siempre es completa al ocurrir, la mejoria clinica.

A PAPER Chromatographie study of urinary aminoacids has been carried out in 69 affected and 565 unaffected relatives from 64 families with various types of muscular dystrophy. Only a small proportion of subjects had either generalized or specific hyperaminoaciduria.

(1955). The Determination of Fermentable Sugars in Beer by Paper Chromatography. Proceedings. Annual meeting - American Society of Brewing Chemists: Vol. 13, Proceedings of the Annual Meeting 1955, pp. 167-173.

Summary In 21 premature infants, the birth weights of whom ranged between 1500 and 2400 g and the ages between 1 and 56 days, the total serum protein values have been determined and the serum protein components have been electrophoretieally differentiated. All infants were fed on human milk but, in 10 infants additional protein was administered (Casein preparation Secoosan). Total protein values were found to be lower in premature infants than in full-term infants. During the first eight weeks of life total protein values decreased, from 5.63 g per cent to 4.03 g per cent. The decrease in total protein is caused by a decrease in the amount of albumin (from a little below 3 g per cent in the first week of life to a little above 2 g per cent in the eighth week) and of gamma-globulin (from about 1 g per cent to about 0.5 g per cent) while the alpha1-, alpha2-and beta-globulin values remain rather constant. If casein is added to the diet the total serum protein values and the serum albumin values will range at higher levels, but the decrease with increasing age will not be prevented. On the contrary, additional casein to the diet will cause a further reduction in the gamma-globulin concentrations (Fig. 1). Taux des proteines dans le serum des prematures. Des determinations du taux des proteines totales ainsi que des taux particuliers des differentes proteines ont ete effectuees par electrophorese chez 21 bebes nes avant terme. Tous ces enfants etaient nourris au lait maternel et 10 d'entre eux recurent des supplements de proteines. Il est apparu que le taux des proteines totales etait plus faible chez les prematures que chez les enfants nes a terme. Au cours des huit premieres semaines qui suivirent la naissance, le taux des proteines totales descendit de 5,63 g%a 4,03 g%. Cet abaissenient du taux des proteines totales provenait de la diminution de la concentration en alburnine (qui d'abord legerement inferieure a 3 g % au cours de la premiere semaine etait descendue a un niveau legerement superieur a 2 g % au bout de huit semaines) et en gamma-globuline (qui, etant d'environ 1 g %etait descendue a environ 0,5 g %), tandis que les taux des globulines alpha1, alpha2 et beta etaient restes relativement constants. L'addition de caseine a la nourriture fit monter les taux des proteines totales et de l'albumine a des niveaux plus eleves, mais ces concentrations diminuerent egalement avec le temps. D'autre part, l'addition de caseine a la nourriture entraina une diminution plus importante du taux des gamma-globulines. Serumproteinwerte bei fruhgeborenen Kmdern. Bei 21 fruhgeborenen Kindern wurden die gesamten Serumproteinwerte bestimmt und die Serumproteinbestandteile elektrophoretisch differenziert. Alle Kinder wurden nut Frauenmilch ernahrt, aber 10 Kinder erhielten einen Eiweisszusatz. Die gesamten Proteinwerte erwiesen sich bei den fruhgeborenen Kindern als niedriger als in vollreif geborenen. Wahrend der ersten 8 Lebenswochen fielen die totalen Proteinwerte von 5,63 % auf 4,03 % ab. Der Fall im Gesamtproteingehalt ist durch einen Abfall im Albumingehalt bedingt (von ein wenig unter 3 g % in der ersten Lebenswoche auf ein wenig uber 2 g % in der achten Woche) und Gammaglobulingehalt (von ca. 1 g % auf ca. 0,5 g%), wahrend die Alpha1-, Alpha2-und Betaglobulinwerte ziemlich konstant bleiben. Wenn Kasein zur Diat zugefugt wird, werd. en die gesamten Serumproteinund Serumalbuminwerte ein hoheres Niveau erreichen, aber der mit dem Alter einhergehende Abfall wird nicht verhindert werden. Im Gegenteil, der Kaseinzusatz zur Diat bewirkt eine weitere Herabsetzung der Gammaglobulinkonzentrationen. Valores seroproteicos en los prematuros. Han sido determinados, en 21 prematures, los valores seroproteicos totales y diferenciados electroforeticamente los componentes seroproteicos. Todos los ninos fueron alimentados con leche humana, pero a 10 de ellos se les administraron proteinas adicionales. Hallose que los valores proteicos totales eran inferiores en los prematuros a los de los ninos nacidos a termino. Durante las ocho primeras semanas de la vida, los valores proteicos totales disminuyeron. de 5.63 g % a 4.03 g %. La disminucion del total proteico esta causada por una disminueion de la cantidad de albumina (desde un poco menos de 3 g % en la primera semana de la vida hasta un poco mas de 2 g % en la octava semana) y de gammaglobulina (desde aproximadamente 1 g % a aproximadarnente 0.5 g %) mientras los valores globulinicos alfa1, alfa2 y beta, permanecen bastante constantes. Si se anade caseina a la dieta, los valores seroproteicos totales y los valores seroalbuminosos alcanzaran niveles mas elevados, pero la disminueion, al aumentar la edad, no podra evitarse. La caseina, contraria, adioionada a la dieta, causara todavia mas reduccion en las concentraciones gammaglobulinicas.

The technique described is a sensitive analytical tool developed for the determination of trace elements. It combines paper chromatography, as the separation process with radiometric precipitation for quantitative determination. Procedures are described that are capable of determining submicrogram quantities of elements. Besides illustrating the use of radiosotopes in analytical chemistry, it is accurate, reproducible, inexpensive, and does not require a high degree of skill to perform the analysis.

PROFITABLE work on the development, evaluation, and application of chemicals for the pulp and paper industry can be conducted on either a small or large scale. However, increasing use of a great variety of chemical products has accentuated the trend toward establishment by chemical manufacturers and suppliers of rather large laboratory groups which, whatever their name, generally have as their primary objective the type of work that may be classified a s application research. This would certainly include the search for uses of new or old chemicals that are being or could be manufactured, and the development of suitable procedures for using or applying established or new chemicals. It also might include the development of new or improved products to satisfy the needs of a particular industry. Quite often an application research group will have assigned to it other diverse duties which cannot be classified strictly as application research, but which are related to it. ...

(1960). The Paper Disc Method for Determination of Bacterial Sensitivity to Antibiotics Studies on the Accuracy of the Technique. Scandinavian Journal of Clinical and Laboratory Investigation: Vol. 12, No. 4, pp. 408-413.

A precise and accurate method is being developed for the determination of T3/T4 ratio. This method depends on using serum of different thyroid cases for the assesment of T3/T4 ratio. It has been found that the best temperature of storage is 0.0 °C to 4 °C before extracting the iodinated tyrosines and thyronines. Iodination with 125I was done according to our previous technique to render the separated thyronine radioactive. Scanning method helped for the determination of T3/T4 ratio. The results were confirmed by sensitivity and recovery test and statistically analyzed. 100 cases were investigated comprising hypo-, eu-, and hyperthyroid cases.

Sagittarius bulutunda bulunan küme ve Cepheid tipi değişen yıl­ dızlardan bir kısmı tetkik edildi. A (2) değerlerinin log P ye nazaran izdü­ şümü c 1, c 2, c 3, a 1, a 2, d 1 ve d 2 seviyelerinin mevcut olduğunu gös­ terir. Yalnız bir kaç sistem c seviyesine aittir.

The electrophoretic patterns of the sera of 25 patients with sarcoidosis were compared with the patterns obtained in 31 persons suffering from other diseases. Only in the cases of sarcoidosis were we able to find a characteristic mean electrophoretic pattern that is a increase in the alpha 2, beta and a marked increase in the gamma globulin while the albumin showed a decrease.

According to the result of totally 10 time mass-screening examinations of pulmonary tuberculosis carried out annualy twice spring and fall during five years, the following conclusions were obtained.1) Both the roentogenographically positive finding rate and prevalence rate of actual case had been decreased over a period of five years.2) Cases of mixed form with exsudative and fibroid lesions, according the Oka roentonographic classification, was most apparently decreased in five years. In the forms of the hardnodular and calcified-scar lesions the rates did not any significant changes, and the form with the deformation by surgical operations increased by the spring 1957 and no change was observed after that. Occurrence of exsudative pleurisy was very seldom.3) In the classification of guide standard, number of the patients with the A calss (off work required) and the class B (limitted working hour) remarkably decreased, and those of the class C (under supervision) relatively increased.4) According to the classification by the Japan Society of Tuberculosis, no case with extensively advanced cavity form was found through the observation, and cases with not-advanced cavity form disappeard by the end of the observation. Also cases with the varied non-cavity form was obviously decreased. No apparent changes were shown in the unmber of cases with the stable non-cavity form and the recovered form.5) The decrease of the number of cases with exsudative form seemed to be more apparent in the group of workers with medium physical work, compared with that group of desk workers. The increase of both the roentogenographically positive finding rate and prevalence of actual case was observed by the older years of age, and the trend was not so much varied through the five year observation.

A description is presented on a nonrecording densitometer for photometry of electrophoregrams in passing light. The instrument may be easily made in any biochemical laboratory with the aid of available parts; the parts may be replaced by analogous ones without impairing the quality of the device. A method is presented for tracing the curve of the optic density and for calculation of the ratio of the fractions of the mixture studied.

Hertzsprung ve Joy tarafından iki hususî listede verilen Ce- pheid değişen yıldızları tetkik edildi. Muvakkatten d 1 ve d 2 seviyeleri ola­ rak gösterilmiş olan iki ilâve seviyenin mevcut olduğu bulundu.

Antibiotic discs were prepared, using several several batches of papers meeting Food and Drug Administration specifications. The analysis of 1,152 zones of inhibition produced showed no performance differences among these batches. Other discs were prepared using papers of different grades. These produced large differences in performance. It is obvious, therefore, that the use of a specified disc paper is necessary for standardizing the performances of the products of various manufacturers and that reproducible results can be attained with the grade of paper specified.

Improvements on a high-voltage paper electrophoresis apparatus are described. The major improvements consist of a simplified cooling system and modification of the cooling plate to accommodate filter paper sheets 24 × 48 in. in size. Two methods, both employing solid heat exchangers, have been devised for the dissipation of Joule's heat: (a) external cooling, employing a Freon 12 circulating coolant and (b) no external cooling, but with heat conductance and radiation by means of an aluminum plate and metal rail.The application of this modified apparatus to the separation of amino acids and peptides from complex biological materials is illustrated.

Paper strips impregnated with stains and chemicals for bacterial staining (Gugol Scientific Corporation, distributed by Wampole Laboratories) were evaluated. The quality of staining 100 Gram-positive and 80 Gram-negative microorganisms was compared with Hucker's modification. Over-decolorization of strip-stained Gram-positive organisms was the most frequent cause of inconsistency. Paper strip “acid-fast” stain was compared with the Ziehl-Neelsen technic for 90 mycobacteria and nine Nocardia strains. Mycobacteria and Nocardia were consistently well stained by the paper strip technic; however, Nocardia were not stained by the true acid-fast method. Ninety-five clinical smears, stripstained by physicians on the wards, were evaluated. Ease of performance and stability of reagents make the paper strip technics practical for use in clinics, wards, and small bncteriologic laboratories.

Since blood spots on filter paper are routinely collected in many areas for phenylketonuria testing of newborn infants, we developed several methods for detecting sickle-cell disease and other hemoglobinopathies using this type of specimen. Simple, inexpensive modifications of cellulose acetate electrophoresis plus citrate-agar and globin-chain electrophoresis are employed, permitting one technician to screen as many as 500 specimens per day at a material cost of $0.03 per specimen. (N Engl J Med 288:1265–1268, 1973)