Mass Of Hair Research Articles

Analysis of trace elements in human hair by PIXE

The PIXE method was applied to the analysis of trace elements in scalp hair using two methods for target preparation. In the first method eight hair strands each of nearly circular cross-section and having approximately the same diameter were selected and placed on an aluminum frame. In the second method a given mass of hair was dissolved in nitric acid and a known amount of strontium was added to the solution and dripped onto a membrane filter using a micropipette. The results for the concentrations of trace elements in hair obtained by the two methods are compared and several aspects of the analysis are discussed.

Proton backscatter as a means of mass measurement in PIXE analysis of hair

It is demonstrated that, contrary to a recent report, the yield of elastically scattered protons from hair specimens is correlated with mass of hair. This provides a means, admittedly approximate, of effecting mass corrections in PIXE microbeam analysis of hair.

Methods of hair analysis by (p, X) spectrometry

The use of (p, X) spectrometry for hair analysis presents difficulties if absolute elemental concentrations are required. This arises because it is not clear what mass of hair the beam is hitting. Attempts to get around this by measuring the scattered protons, or the intensity of the sulphur X-ray peak, or by calculation, were not successful. Neither of the parameters was related to the mass analysed, because of probable irregular shape and elemental distribution. The problems can be overcome by dissolving a weighed amount of hair in hot nitric acid, adding an internal standard, and drying it on filter paper or a thin plastic film.

Omphalitis in the adult.

An adult patient with omphalitis was treated successfully by conservative measures. Spontaneous extrusion of a mass of hair and sebum concretion was the final episode. The author stresses the rarity of the condition, its dissimilarity to the variety seen in infants, its resemblance to infected pilonidal cyst, and the advisability of nonexcisional treatment.

Hercules-Nergal at Hatra

A fragment of a sculptured miniature column was found in Shrine io situated to the west of the Great Temple at Hatra.1 This shrine has been assigned to Nergal2 on epigraphical3 and iconographical4 grounds. The fragment5 comprises the upper part of the column with a rectangular capital (measuring 8.7 X 7.7 cm.) surmounted by a hollow incense receptacle (diameter 6 cm., height 3 cm.). The fragment is carved with low reliefs on four sides. On one side is a relief of a male figure (Plate XXXIII a), the legs of which, below the knees, are missing. He stands to the front with the head slightly turned to the left. His head is dominated by a mass of hair drawn to the back as indicated by very shallow incisions (Plate XXXIII b). An eagle with completely spread wings stands over the head.6 The figure wears an oval-shaped beard, the end of which is broken off. The features of the face are summarily and crudely indicated. Over his shoulders, he wears a chlamys fastened on the right shoulder with a brooch. The folds of his garment are visible on the shoulders and on the upper right arm. The rest of the body is left uncovered. A small rectangular object protrudes from his chest, but its purpose is not known to me. The right arm is raised to shoulder level, and with his hand he grasps a double axe, its upper end chipped off. He wears a plain bracelet on his right wrist. His left arm bends at the elbow and he holds in his hand a thick rope or a leash connected to an animal, of which the top part of the head is missing. The animal, carved frontally, could very well be a dog. The carving of the body of the figure is successful, for it shows some understanding of modelling, even though the figure is rather small to show further details. The muscles of the abdomen slightly bulge, indicating the movement of the right arm.

ELECTRON SPIN RESONANCE IDENTIFICATION OF MELANIN IN COMEDONES

SUMMARY.— Comedones show an electron spin resonance spectrum characteristic of horny keratinous tissue in general. Those from dark-skinned donors show the presence of an additional signal compatible with melanin. The ratio of the concentration of melanin unpaired spins in the comedones of the donors to that in an equal mass of hair of the same donor is between 3%, and 6%, according to these E. S. R. spectra. No melanin signal could be detected in comedones from fair-haired fair-skinned donors, probably because of its low concentration.

Beta-Gauge for Hair Measurements

THE quantitative measurement of hair is an important factor in studies of heat exchange between animal and environment. Methods currently employed consist in counting the number of hairs per unit area, measuring the mean hair length, and determining the weight of hair per unit area. In measurements of hair number or hair weight per unit area a major error arises from the difficulty of measuring precisely an area on the mobile, elastic, non-planar skin of an animal. Any method requiring the removal of the hair for measurement changes the heat-transfer characteristics of the area, and repeat measurements cannot be made on the same area. An absorption-type beta-ray gauge would appear to offer a solution to the problem of measurement of the mass of hair per unit area. It would be a rapid, non-destructive, and reasonably accurate direct measurement of the mass of hair per unit area at the point of measurement.

Lactobacillus trichodesnov. spec., a bacterium causing spoilage in appetizer and dessert wines

A new species of Lactobacillus which has been observed in wines of high alcohol content for many years is described and named. The name L. trichodes is proposed because of the marked tendency to grow as long intertwined chains and filaments resembling a mass of hair.

A New Skyphos by the Pisticci Painter

SKYPHOS in the Gustav-Liibcke Museum in Hamm in Westfalia, a work by the Pisticci painter,' can now be added to the list of known skyphoi by that painter. These show a single figure on each side, usually Pan or a silen, and also women, maenads, or youths. The new vase is from the Liibcke collection, and now bears the inventory number 1551 at Hamm.2 On the obverse (pl. vI, B) is the picture of a youth in chiton and himation, leaning on his staff and facing right. His cloak is pulled up high in back of his head, his skull elongated and bald. On the reverse (pl. vii, A) a silen is depicted holding a thyrsus and wrapped in a wide robe made of shaggy woolen material. On the grounds of stylistic similarities with a number of vases by the Pisticci painter, our skyphos may be attributed to that master. Characteristic is the painter's choice of subject; on this vase, as on most of his other works, the subjects are not taken from mythology and the composition is not on a large scale. A comparison of the silen with the maenad between two silens on a calyx krater in Bologna3 shows an obvious identity of hands: the poses of both maenad and silen are the same, both are almost completely covered by their robes, with only the heads showing. A certain angularity of profile is also evident in both figures, which is apparent especially in the rendering of elbow and knee. Folds are given in simple straight lines, and in both figures recurs the parallel arrangement of diagonal folds near the neck. The parallel lines below the silen's hip find a correspondence in the vertical strokes along the maenad's side. Similar are also the bold zig-zags of the folds at the borders. The concentric curved lines in the lower portion of the silen's robe are missing, it is true, in the maenad's, but they recur in the woman beside the figure of Eros on a krater in the Vatican.4 The drawing of the silen's bulbous nose, of his mouth and eye, find their best parallels in the drawing of a dancing Pan on a skyphos in Dresden:5 a thick curved line for the eyebrow, a curved stroke for the upper lid, and for the eye proper two strokes and a dot between. The lower stroke of the eye is bent, the dot somewhat elongated and oblique, whereby the face acquires a tense expression, which is a rare feature in the Pisticci painter's work. The baldness at the top of the head, reaching far to the back, the sketchily drawn and ragged beard, the mass of hair only slightly relieved at the edges, all this is in complete agreement with the other representations of this figure, which is a favorite with the painter and his circle. Compare, e.g., the silens dancing around a maenad on another krater in Bologna;6 the one on the left also bears a thyrsus similar to that of the Hamm silen. The feet, a weak point

A REPORT ON TRIBAL BOUNDARIES AND HUNTING AREAS OF THE MALECITE INDIAN OF NEW BRUNSWICK

of the Malecite Bear-Family Legend A little boy became separated from his parents and lost. A she-bear discovered him and coaxed him into her den with her two cubs. She warned the cubs not to play too hard with their new brother because he was tender. The boy spent the winter with the bear foster-mother and family. In the spring the Indians chased the bears and overtook them. When the hunters came up the boy begged them not to kill his mother and they spared her. The boy returned to his people. And all his descendants thereafter took the family name of Bear. It was accepted as a fact and generally observed among the people then that the experience noted occurred in the infancy of Ambrose Bear (Mu'-'n, bear) and that his descendants bearing the family surname have a broad flat occiput and a mass of black hair. Ambrose Bear died about 1878 at an advanced age, and was known to Gabe Perley, the narrator of the legend. The tale just given suggests some fruitful reflections concerning the social past of the Malecite as compared with that of the Penobscot. In the case of the latter it happens that the same tradition in large part was shared by a family named Bear, but not connected genealogically with the Malecite family, so far as Perley had ever heard. In Penobscot social history the Bear family acquired a taboo against killing bears arising from sentiments of quasiconsanguinity. Not so with the Malecite. The hunters of this family would kill bears if they could. Evidently the Penobscot were actuated by motives Is Some of Newell's sons were living at the time this deposition was made (1917): Peter, Tom, Charlie and Newell. This content downloaded from 157.55.39.55 on Tue, 23 Aug 2016 05:15:39 UTC All use subject to http://about.jstor.org/terms SPECK AND HADLOCK] AREAS OF THE MALECITE INDIAN 365 leading to the development of what may be termed gentile groupings not discernible in Malecite.19 The Bear Foster-mother tale has versions among Algonkian groups who apply the designation Wapanachki (Wabanaki) to themselves as far west as the Munsee and Delawares. It is regarded as an authentic historical event wherever it is known.

George Reisner: An Impression

It is more than thirty years since I first met George Reisner. He was then in the prime of life, a short sturdily-built man with a mass of straight black hair, I a closely clipped moustache and a determined chin. He was wearing spectacles with very powerful lenses and, as usual, had a pipe in his mouth. His fingers were short and stubby and it was rather terrifying to see him manipulating some delicate antiquity. There was nothing Germanic about him except his name—he was born in Indianapolis of a family which had migrated from Europe, I believe, in the Napoleonic era. Nor was there anything obviously academic; he looked and talked like a forceful 100% American of the breed of Theodore Roosevelt, strong, open and friendly. He used to say, probably with truth, that he might have made a fortune in business if he had not chosen a different career.

The Story of the First Roentgen Evidence

IT IS my intention to present to you a description of the principals and to some extent the scene in the courtroom where the first X-ray plate was introduced as evidence. Try to visualize my description of a courtroom well filled with prominent people in an action for alleged malpractice in the treatment of a fractured femur against a surgeon of national reputation. This surgeon was, and still is, eminent. He was the first to do an appendectomy in this country; the first to accomplish an anastomosis of the spinal accessory to the facial and descending hypoglossal nerves; a man who has simplified many of our extensive surgical procedures; one of the founders of the American College of Surgeons and the Western Surgical Association, and a member of the Board of Governors of the College of Surgeons. Defending this suit were a United States Senator, former judges and other attorneys with distinguished records, known throughout this country. The suit was brought April 14, 1896, by one James Smith, a poor boy who was reading law and doing odd jobs to pay his expenses. He was injured in a fall from a ladder while trimming some trees, and after some time he consulted the distinguished surgeon, who made no attempt at immobilization of the thigh but advised exercise of various kinds as though treating a contusion. Prosecuting this suit for James Smith, plaintiff, were Ben B. Lindsey, a young attorney in his early twenty's, and his associate, Fred W. Parks. We have all come to know the name of Ben B. Lindsey as the founder of the Denver Court of Domestic Relations—otherwise known as the Denver Juvenile Court. It is remarkable, too, that Mr. Parks later became the youngest Senator in this State and had a varied and interesting political career. The docket number of this case is 24,159 in the District Court of Arapahoe County, now the District Court of Denver, Colorado. At that time there was only one higher court in Colorado, the Appellate Court. On the day in question, Thursday, December 2, 1896, there sat upon the bench Judge Owen E. Le Fevre, a man who had made a considerable fortune in mining, who had been a lawyer whom every one trusted, who loved horses, sports, and his fellow-men—Judge Le Fevre, large of build and short in stature, with a very large head and a mass of snow-white hair, a closely clipped white mustache, and exceedingly pink face. The young attorneys, Lindsey and Parks, qualified one H. H. Buckwalter as an expert in photography and in the use of roentgen rays, for he had been making X-ray shadowgraphs for the past eight months for his own amusement and that of his friends. He, with Dr. C. E. Tennant, of Denver, had become acquainted with Roentgen's work and, after similar experiments, agreed to attempt to take a picture of the hip of James Smith. Plates were made November 7, 11, 21, and 28, 1896. The most satisfactory one required an exposure of eighty minutes (personal communication from Dr. Tennant).

Expulsion of a mass of hair from the Uterus

Expulsion of a mass of hair from the Uterus