1,373 research outputs found
Letter to Elizabeth Rees about Distant Family
No full textLetter addressed to Elizabeth Rees, but because the last pages of this letter were lost there is no way of telling who it is from. The letter states that the author’s nephew is recovering from the swelling of his limbs and is expected to be okay. The author’s cousin Thomas will be visiting soon along with the rest of his family. Then the author continues to speak of the different marriages that have been occurring locally. This is one item from the Rees Family Correspondence Collection, which includes many letters between family members in Oregon and Ohio
Letter to a Brother of the Rees Family about Politics
No full textLetter addressed to a brother of the Rees family, but neither the author of the letter nor who the letter is to be mentioned. The letter talks about local gossip in Butteville. Then the letter cuts off and switches from March to December and talks about the Presidential candidates for 1876. It was a close race between Samuel J. Tilden and Rutherford B. Hayes, with Hayes winning the election. The author of this letter strong supports the Federalist views while talking about politics during this time. This is one item from the Rees Family Correspondence Collection, which includes many letters between family members in Oregon and Ohio
Control of microplankton size structure in contrasting water columns of the Celtic Sea
No full textWater column structure, microphytoplankton size spectra and nutrient concentration were analysed at six sampling stations in the Celtic Sea. Three types of stations were distinguished: (i) where the upper mixed layer (UML) reaches the total depth (TD), (ii) where the UML is about half of TD and (iii) where the UML is considerably less than half the TD. The UML was nutrient rich at type A stations and was nutrient depleted at type B stations. At type C stations, the UML was nitrate depleted and silicate rich. Two groups of microplankton size-abundance spectra (SAS) were found: (i) a typical linear SAS and (ii) a more complex ‘atypical’ SAS, with a linear part up to 160 µm and a dome at 300 µm caused by a Coscinodiscus wailesii bloom. The dome was observed at all depths at type A stations and above the pycnocline and at the seafloor of type B stations. Combining intrinsic growth rate, sinking rate and mixing layer depth, the C. wailesii dome persists only at type A stations but settles out of the UML at the remaining stations. This suggests that a large part of the perturbation at the right extreme of phytoplankton SAS does not propagate along the planktonic SAS but sinks to the seafloor
Migration and Settlement: 1. United Kingdom
No full textIn this report, the first of a series, Dr. Philip Rees of the University of Leeds analyzes population dynamics in the United Kingdom and discusses the effects of national population distribution policies. Conventional methods and recently developed multiregional techniques are used to explore the impacts of recent demographic changes
Studies on the biochemical pharmacology of mast cells dispersed from the human large intestine
No full textAvailable from British Library Document Supply Centre- DSC:DX95868 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo
On the future: prospects for humanity/ Martin Rees, with a new preface by the author.
No full textDescription based upon print version of record.Includes bibliographical references and index.A provocative and inspiring look at the future of humanity and science from world-renowned scientist and bestselling author Martin ReesHumanity has reached a critical moment. Our world is unsettled and rapidly changing, and we face existential risks over the next century. Various outcomes--good and bad--are possible. Yet our approach to the future is characterized by short-term thinking, polarizing debates, alarmist rhetoric, and pessimism. In this short, exhilarating book, renowned scientist and bestselling author Martin Rees argues that humanity's prospects depend on our taking a very different approach to planning for tomorrow.The future of humanity is bound to the future of science and hinges on how successfully we harness technological advances to address our challenges. If we are to use science to solve our problems while avoiding its dystopian risks, we must think rationally, globally, collectively, and optimistically about the long term. Advances in biotechnology, cybertechnology, robotics, and artificial intelligence--if pursued and applied wisely--could empower us to boost the developing and developed world and overcome the threats humanity faces on Earth, from climate change to nuclear war. At the same time, further advances in space science will allow humans to explore the solar system and beyond with robots and AI. But there is no "Plan B" for Earth--no viable alternative within reach if we do not care for our home planet.Rich with fascinating insights into cutting-edge science and technology, this accessible book will captivate anyone who wants to understand the critical issues that will define the future of humanity on Earth and beyond.Cover -- Contents -- Preface to the Paperback Edition -- Introduction -- 1. Deep in the Anthropocene -- 1.1. Perils and Prospects -- 1.2. Nuclear Threats -- 1.3. Eco-Threats and Tipping Points -- 1.4. Staying within Planetary Boundaries -- 1.5. Climate Change -- 1.6. Clean Energy-and a 'Plan B'? -- 2. Humanity's Future on Earth -- 2.1. Biotech -- 2.2. Cybertechnology, Robotics, and AI -- 2.3. What about Our Jobs? -- 2.4. Human-Level Intelligence? -- 2.5. Truly Existential Risks? -- 3. Humanity in a Cosmic Perspective -- 3.1. The Earth in a Cosmic Context -- 3.2. Beyond Our Solar System -- 3.3. Spaceflight-Manned and Unmanned -- 3.4. Towards a Post-Human Era? -- 3.5. Alien Intelligence? -- 4. The Limits and Future of Science -- 4.1. From the Simple to the Complex -- 4.2. Making Sense of Our Complex World -- 4.3. How Far Does Physical Reality Extend? -- 4.4. Will Science 'Hit the Buffers'? -- 4.5. What about God? -- 5. Conclusions -- 5.1. Doing Science -- 5.2. Science in Society -- 5.3. Shared Hopes and Fears.1 online resource (281 p.
Recovery of rare earth elements (REEs) from uranium containing solutions using biosorption
No full textBatch testing and determination of appropriate biosorbent and experimental procedures for recovery of REEs from artificial solution as well as the efficiency of the process for recovery of REEs from artificial solution via biosorption are given in present research work
Selective electrochemical extraction of REEs from NdFeB magnet waste at room temperature
No full textNdFeB magnet waste is one of the important secondary resources from which rare-earth elements (REEs) can be recovered. Herein we present an electrochemical route to selectively extract REEs from the magnet waste at room temperature. First, the magnet waste was partially leached with HCl. The partial leachate along with undissolved magnet waste was taken in the anolyte side of a two compartment reactor separated by an anion exchange membrane whereas the catholyte consisted of sodium chloride solution. The Fe(ii) present in the leachate was oxidized and precipitated as Fe(OH)3 while more than 95% of REEs were extracted into the solution. Subsequently, oxalic acid was used to selectively precipitate REEs as rare-earth oxalates. Hydrochloric acid liberated during the oxalic acid precipitation process could be directly reused in the partial leaching step. Sodium chloride was the only chemical consumed during the electrolysis. The effect of the NaCl concentration in the anolyte and catholyte on the extraction of metals was investigated. From magnet waste to rare-earth oxides, the developed recycling process is environmentally friendly and consumes only electricity, NaCl and oxalic acid.Accepted Author Manuscript(OLD) MSE-
CYCLOPӔDIA; OR, UNIVERSAL DICTIONARY OF Arts, Sciences, and Literature: PLATES, VOL. VI, ANCIENT AND MODERN ATLAS
No full textThere were 39 volumes, plus 6 volumes of plates, to the Cyclopӕdia published as a set in 1819 and 1820, although it began as a serial in 1802. An index to the plates in the Atlas was included in volume 39. The 'modern' maps are distinctive as early examples where topographic relief is shown pictorially
Ex-ante LCA of a hydrometallurgical route using weak acid for recycling of REEs from EOL HDD’s NdFeB permanent magnet
No full textThe rare-earth elements (REEs) are Europe’s most critical raw-materials group due to the high supply dependency on the Chinese REEs near-monopoly. The NdFeB permanent magnet in EOL hard disk drivers (HDDs) is an actual source of REEs. However, REEs recycling routes are still under development. Hydrometallurgical routes are attractive because they are versatile, but concerns arise regarding their chemical consumption and the implication to the environment. An ex-ante environmental analysis supports the launch and consolidation of the route in an environmentally sound manner. This work aims to identify the environmental hotspots of a theoretical hydrometallurgical recycling route for REEs, which uses acetic acid for leaching and oxalic acid for precipitation. The route also allows chemical recycling through a loop within it. The ultimate goal is to draw recommendations toward improving the environmental profile of the technology before it gets implemented. The evaluation is carried using the Life Cycle Assessment (LCA) methodology according to a dedicated framework for ex-ante analysis, including upscaling. The analysis highlights as hotspots the oxalic acid in the precipitation stage and the direct dust emissions and its treatment in the fragmentation of HDDs. Moreover, results indicate that acetic acid regeneration within the system is more burdensome than use the chemical produced from raw materials. The premature assessment also indicates that the environmental profile of the emerging technology is potentially inferior to the established primary production. A limitation of the model arises from the economic allocation for multifunctional processes due to the approach developed to stipulate the price of some co-products. Overall, the uncertainties carried with the ex-ante LCA prevent any assertive declaration regarding the recycling route’s environmental performance. However, the exercise contributes to the problem-solution space. It gives directions to the next steps: better data collection for the RE recovery phase, less dust production in the fragmentation phase, other means for precipitation of REEs, and variation in the leaching solid-liquid ratio.VALOMAGCircular EconomyIndustrial Ecolog
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