Alien Registration- Robinson, Ernest T. (Wade, Aroostook County)

https://digitalmaine.com/alien_docs/32631/thumbnail.jp

Design prediction for long term stress rupture service of composite pressure vessels

Extensive stress rupture studies on glass composites and Kevlar composites were conducted by the Lawrence Radiation Laboratory beginning in the late 1960's and extending to about 8 years in some cases. Some of the data from these studies published over the years were incomplete or were tainted by spurious failures, such as grip slippage. Updated data sets were defined for both fiberglass and Kevlar composite stand test specimens. These updated data are analyzed in this report by a convenient form of the bivariate Weibull distribution, to establish a consistent set of design prediction charts that may be used as a conservative basis for predicting the stress rupture life of composite pressure vessels. The updated glass composite data exhibit an invariant Weibull modulus with lifetime. The data are analyzed in terms of homologous service load (referenced to the observed median strength). The equations relating life, homologous load, and probability are given, and corresponding design prediction charts are presented. A similar approach is taken for Kevlar composites, where the updated stand data do show a turndown tendency at long life accompanied by a corresponding change (increase) of the Weibull modulus. The turndown characteristic is not present in stress rupture test data of Kevlar pressure vessels. A modification of the stress rupture equations is presented to incorporate a latent, but limited, strength drop, and design prediction charts are presented that incorporate such behavior. The methods presented utilize Cartesian plots of the probability distributions (which are a more natural display for the design engineer), based on median normalized data that are independent of statistical parameters and are readily defined for any set of test data

Ice Fog as a Problem of Air Pollution in the Arctic

Extensive field programs were undertaken in Alaska during the winters of 1952-1954 to determine the causes of ice-fog formation. Ice fog forms at temperatures near -30 C and below in populated areas and is particularly troublesome at military installations. It poses no threat to health but seriously restricts visibility. The fog is a direct result of supersaturation of the cold air with water vapor from man-made sources. The only methods of curtailing its formation appear to be restricting vapor emission into the air or confining emission to selected fall stacks. Microphotographs of ice fog particles collected at various temperatures are included

Phytosociology of the Namib Desert Park, South West Africa.

Thesis (M.Sc.)-University of Natal, Pietermaritzburg, 1976.The geology, topography, soils and climate of the Namib Desert Park south of 23 S. Lat. are described briefly. The vegetation was investigated using the techniques of the Zurich - Montpellier school of phytosociology. Floristic and other site data were collected from 472 sites in the standard Braun - Blanquet manner and the techniques are described in some detail. These data are presented by means of phytosociological tables and detailed descriptions of each community. A total of 34 noda, communities and sub-communities, were delimited in the study area and the floristic and ecological relationships of these are discussed. Only a few of the communities can be assigned to syntaxa from other parts of the world or southern Africa because most of the Namib Desert communities seemed too different to be compared to associations from North Africa, the Middle East, South America or Australia on more than a superficial, structural basis. Very few data from other arid or semi-arid areas in southern Africa have received formal phytosociological treatment and there is therefore insufficient material to draw meaningful comparisons. The "foam structure" described by Volk & Geyger (1970) was found to be widely distributed in soils of the plains of the Namib Desert, and it was shown to have a profound influence on water penetration. The effects on vegetation development are discussed. The study generated a number of questions about the vegetation and ecosystems of the Namib Desert and some recommendations are made concerning future synecological and autecological studies. A list of species and synonyms of the names of all higher plants recorded in the study area are given in Appendix I. It is concluded that the Braun - Blanquet method is efficient in terms of time required to collect data which can be used for a number of purposes, but that a classification of vegetation ' should be followed up by autecological and detailed synecological studies of species (particularly those which characterize communities) and individual communities to determine the controlling factors more precisely and to enable more accurate predictions concerning the effects of management programmes to be made

Is antecedent D-Dimer testing prior to compression ultrasonography likely to be helpful for evaluating deep vein thrombosis in acute medical inpatients?

BackgroundVenous thromboembolism is a preventable cause of death in hospital, D-Dimer assays are highly sensitive for detecting VTE but have not been validated in inpatients. Acute medical inpatients frequently have comorbid conditions that may limit the value of this test.AimWe aim to review the evidence regarding D-Dimer use and apply it to an acute medical inpatient cohort to determine its potential applicability in this setting.MethodsA retrospective review of acute medical inpatients (within 48h of admission) was performed over a two year period who had compression ultrasonography. For patients without antecedent D-Dimer testing, medical records were reviewed to determine if a comorbid illness was present that would limit D-Dimer value. Pregnancy, active malignancy, significant infection, known arterial thrombus, VTE already detected, stage 4 CKD, age >80, exacerbation of moderate to severe COPD and clinical question of collection, not DVT, were accepted reasons that justified no D-Dimer.ResultsThree hundred and forty eight acute medical inpatients underwent DVT ultrasonography in this timeframe, 60 had confirmed DVT. 10.6 per cent of cases underwent antecedent D-Dimer testing, and a valid medical reason was identified in 84.9 per cent of cases who did not. Elderly age, significant infection and admission with active malignancy were the most common reasons to not proceed with D-Dimer testing.ConclusionMost acute medical inpatients proceeded straight to ultrasonography to evaluate for DVT which is largely supported by available literature. This study supports the limited, if any, role for antecedent D-Dimer use in acute medical inpatients due to their comorbid conditions

Gertrude Robinson Correspondence

Entries include brief biographical information, a typed biography, years of typed and handwritten letters on plain and graph paper stationery, expressive accounts of time spent at her summer home on Orr\u27s Island, Maine, a typed plain postcard explaining that she had written a recent book draft after a New York bus accident, correspondence concerning her work with Books Across the Sea aiding the visiting Cornish historian Rowse in research with Day of the English-Speaking Union, and a typed letter from the Tompkins Square House on Community Service Center stationery from Bollettino providing information on Robinson\u27s recent passing