The dwarf succulent genus Conophytum N.E.Br.: distribution, habitat and conservation.

The dwarf succulent genus Conophytum N.E.Br. is one of the most species rich in the Aizoaceae. Primarily restricted to the arid winter-rainfall region of the Northern and Western Cape Provinces of South Africa and southwestern Namibia, the genus is most closely associated with the Succulent Karoo biome, a region of high floral endemism and biodiversity. Many taxa are niche-specialists and almost a third of all Conophytum are severely range-restricted and can be considered to be pointendemics. The genus as a whole is vulnerable to anthropogenic impacts and many species are threatened by activities such as mining, agriculture and climate change

Conophytum bachelorum and its relatives: the introduction of a new conophytum from Namaqualand, C. confusum.

Summary: A reassessment of a group of four closely related taxa of the dwarf succulent genus Conophytum from Namaqualand, South Africa has been undertaken. This has resulted in the description of a newly discovered taxon, namely Conophytum confusum

Leveraging Thousands of Contrail Observations from GLOBE Citizen Scientists

The GLOBE (Global Learning and Observations to Benefit the Environment) Program is NASA's largest and longest-operating citizen science program contributing Earth observations. Over 800,000 cloud observations have been reported worldwide since YEAR that include reports of short-lived, persistent, and persistent-spreading contrails. While contrails can be challenging to observe with space-borne platforms, humans are adept at spotting contrails from the ground. The NASA GLOBE Clouds team at NASA Langley Research Center in Hampton, Virginia matches cloud observations to multiple satellite platforms for comparison, including: NASA's CERES (Clouds and Earth's Radiant Energy System) instrument onboard Terra and Aqua, CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation), and geostationary satellites. A pilot project was started with select students in the United States to track airplanes above 25,000 ft and report airplane type, altitude, and report if a contrail was being or was not being produced. The objective of the pilot project was to establish if this is a scalable approach for building an international observational dataset documenting what types of airplanes are creating what types of contrails (short-lived, persistent, spreading) under what atmospheric conditions. Preliminary results of this pilot project will be presented

Are clergy serving yoked congregations more vulnerable to burnout? : a study among clergy serving in the Presbyterian church (USA)

Pressures generated by increasing secularization and decreasing vocations to ordained ministry are resulting across denominations in a growing number of clergy serving more than one congregation. This study assesses the hypothesis that clergy serving more than one congregation are more susceptible to burnout. Data were provided by a sample of 735 clergy serving in The Presbyterian Church (USA) who completed the Francis Burnout Inventory together with the abbreviated Eysenck Personality Questionnaire Revised. Among these clergy, 82% served one congregation, 13% served two congregations, and 5% served three or more congregations. After controlling for individual differences in age and personality, the data demonstrated that clergy serving yoked congregations experienced no statistically significant differences in susceptibility to burnout, either in terms of levels of emotional exhaustion or in terms of levels of satisfaction in ministry, compared with colleagues serving just one congregation

Conophytum crateriforme - a new dumpling from Namaqualand

Summary: A new taxon in the dwarf succulent genus Conophytum from Namaqualand, South Africa is described – Conophytum crateriforme. The plant is named for its distinctive bowl shape

ORTHOTOPIC LIVER TRANSPLANTATION FOR WILSON'S DISEASE

An 11-year-old boy with terminal hepatic failure due to Wilson's disease was treated 18 months ago with orthotopic liver transplantation. Postoperatively, there has been evidence of clearance of body copper stores but without accumulation of copper in biopsy specimens of the transplanted liver after 6 and 17 months. Further follow-up will be necessary before deciding whether the disorder has been cured by liver replacement and in turn whether this constitutes proof that Wilson's disease is an inborn error of hepatic metabolism. The observations so far are consistent with these conclusions. © 1971

Contributions to the study of a class of optimal control problems on the matrix lie group SO(3)

The purpose of this thesis is to investigate a class of four left-invariant optimal control problems on the special orthogonal group SO(3). The set of all control-affine left-invariant control systems on SO(3) can, without loss, be reduced to a class of four typical controllable left-invariant control systems on SO(3) . The left-invariant optimal control problem on SO(3) involves finding a trajectory-control pair on SO (3), which minimizes a cost functional, and satisfies the given dynamical constraints and boundary conditions in a fixed time. The problem is lifted to the cotangent bundle T*SO(3) = SO(3) x so (3)* using the optimal Hamiltonian on so(3)*, where the maximum principle yields the optimal control. In a contribution to the study of this class of optimal control problems on SO(3), the extremal equations on so(3)* (ident ified with JR3) are integrated via elliptic functions to obtain explicit expressions for the solution curves in each typical case. The energy-Casimir method is used to give sufficient conditions for non-linear stability of the equilibrium states.KMBT_363Adobe Acrobat 9.54 Paper Capture Plug-i