Variation In Gold Content Of Minerals Of The Marysville Quartz Diorite Stock, Montana

Neutron activation analysis for gold has been carried out on 135 mineral samples from throughout the Marysville stock with the following results: (1) the gold content of 44 biotite ranges from 0·002 to 0·924 ppm with an average of 0·076 ppm; (2) 37 hornblende samples gave a range of 0·003-0·823 ppm and an average of 0·100 ppm; (3) for 44 magnetite samples the range was 0·003-0·329 ppm and the average 0·037 ppm; (4) 10 quartz-feldspar samples varied from 0·006 to 0·176 ppm with an average of 0·065 ppm. High gold values mainly occur near the edge of the stock and the lowest values in the center of the stock. The highest values are found near the old gold mines located along the periphery of the stock. Because it could not form bonds in crystallizing minerals, the gold was concentrated in the residual fluids of the Marysville magma and was finally deposited in quartz veins at the edge of the stock. The gold in the minerals is probably entrapped as uncharged gold atoms. The amount of gold in a given mineral was determined by the structure of the mineral and the concentration of gold in the magma at the time of crystallization of that mineral. © 1967

Serpentine and associated rocks and contact minerals near Westfield, Massachusetts

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology, 1960.Vita.Includes bibliographical references (leaves 169-174).by Arthur Hume Brownlow.Ph.D

Digital Metastases of Giant Cell Rich Malignant Fibrous Histiocytoma

Background. Metastatic spread of soft tissue sarcomas to the digits is extremely rare and metastasis of MFH to the fingers and toes has not been documented

SunbYte: an autonomous pointing framework for low-cost robotic solar telescopes on high altitude balloons

The design and usability of a fully autonomous robotic control system (SunbYte - Sheffield University Balloon “lYfted” TElescope) for solar tracking and observational applications onboard high-altitude balloons are addressed here. The design is based on a six-step development plan balancing scientific objectives and practical engineering requirements. The high-altitude solar observational system includes low-cost components such as a Cassegrain-type telescope, stepper motors, harmonic drives, USB cameras and microprocessors. OpenCV installed from ROS (Robotic Operating System), python and C facilitated the collection, compression, and processing of housekeeping and scientific data. This processed data was then transmitted to the ground station through the launch vehicle’s telecommunication link. The SunbYte system allows the brightest spot in the sky, the sun, to be identified, and a telescope pointed towards it with high enough accuracy that a scientific camera can capture images. This paper gathers and presents the results from primarily two missions with the High-Altitude Student Platform (HASP, NASA Balloon Program office and LaSpace). Additionally, a discussion will be made comparing these with an earlier iteration flown with the German-Swedish “REXUS/BEXUS” programme coordinated by the European Space Agency. By capturing and analysing a series of tracking images with the location of the Sun at the calibrated centre, the system demonstrated the tracking capabilities on an unstable balloon during ascent. Housekeeping sensor data was collected to further analyse the thermal and mechanical performance. The low temperature increased friction in the drive train and reduced the responsiveness of the harmonic drive actuation system. This caused some issues which require further work in future missions, for example, with SunbYte 4 and its work when flying with the HEMERA ZPB (Zero Pressure Balloon) program

A missed orthopaedic injury following a seizure: a case report

Numerous orthopaedic injuries can follow a seizure and are often diagnosed late. This is the first documented case of a missed bilateral anterior shoulder dislocation following a seizure. The possible reasons for the greater incidence of posterior dislocations are examined and why bilateral anterior dislocations following a seizure are so rare. The article discusses the reasons for the delay and highlights potential pitfalls and learning points for junior emergency department doctors

First isolation of Brucella pinnipedialis and detection of Brucella antibodies from bearded seals Erignathus barbartus

Brucella species infecting marine mammals was first reported in 1994 and in the years since has been documented in various species of pinnipeds and cetaceans. While these reports have included species that inhabit Arctic waters, the few available studies on bearded seals Erignathus barbatus have failed to detect Brucella infection to date. We report the first isolation of Brucella pinnipedialis from a bearded seal. The isolate was recovered from the mesenteric lymph node of a bearded seal that stranded in Scotland and typed as ST24, a sequence type associated typically with pinnipeds. Furthermore, serological studies of free-ranging bearded seals in their native waters detected antibodies to Brucella in seals from the Chukchi Sea (1990-2011; 19%) and Svalbard (1995-2007; 8%), whereas no antibodies were detected in bearded seals from the Bering Sea or Bering Strait or from captive bearded seals

1951: Abilene Christian College Bible Lectures - Full Text

Delivered in the Auditorium of Abilene Christian College Abilene, Texas February 18-22, 1951 Price, $3.00 FIRM FOUNDATION PUBLISHING HOUSE Austin, Texa

In vivo formation of natural HgSe nanoparticles in the liver and brain of pilot whales

Acknowledgments Z.G. thanks to the College of Physical Sciences at University of Aberdeen and Chevron USA for the provided studentship. P.M.K. is the recipient of an Australian Research Council Future Fellowship (FT120100277). Parts of this research were undertaken on the XFM beamline at the Australian Synchrotron, Victoria, Australia. The assistance of Daryl Howard (XFM beamline, Australian Synchrotron) is acknowledged. Although EPA contributed to this article, the research presented was not performed by or funded by EPA and was not subject to EPA's quality system requirements. Consequently, the views, interpretations, and conclusions expressed in this article are solely those of the authors and do not necessarily reflect or represent EPA's views or policies. MRCAT operations are supported by the Department of Energy and the MRCAT member institutions. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The authors declare no competing financial interests. F.L.R. and A.B. acknowledge Scottish Marine Animal Stranding Scheme and Marine Scotland for funding. Author Contributions E.M.K and J.F. designed the experiments. Z.G. measured total Hg and conducted Hg speciation. Total Se was determined by A.R. and Z.G. M.M.L. performed Se speciation and 2D imaging by LA-ICP-MS was done by D.S.U. XANES was performed by K.S. and XRF by E.L. and P.M.K. Samples were obtained by E.M.K. through A.B. and age determination was done by F.R. spICP-MS was performed by E.H.L., K.L., G.W. and Z.G. The manuscript was written by Z.G. and all authors discussed the results and commented on the manuscript.Peer reviewedPublisher PD